Patent Publication Number: US-2009229766-A1

Title: Adhesive removal device

Description:
CROSS REFERENCE TO RELATED APPLICATION 
     This application claims the benefit of U.S. Provisional Patent Application No. 61/036,683, filed Mar. 14, 2008, the disclosure of which is incorporated by reference herein in its entirety and U.S. Provisional Patent Application No. 61/100,428, filed Sep. 26, 2008, the disclosure of which is incorporated by reference herein in its entirety. 
    
    
     TECHNICAL FIELD 
     The present disclosure relates to adhesive, and, more particularly, to removal of adhesive from a substrate to which the adhesive is bonded. 
     BACKGROUND 
     Some adhesives comprise stretch release properties that enable the adhesive to be detached from a substrate to which it is bonded by stretching the adhesive. In some cases, the stretch release adhesive may be stretched at an angle relative to the bond surface of the substrate in order to release the adhesive from the surface. Many stretch release adhesives, once bonded to a substrate, are relatively cleanly removable from the substrate, such that there is no visible residue remaining on the substrate and no visible damage to the substrate. Stretch release adhesives tapes are useful in a variety of applications including, but not limited to, assembling, joining or attaching elements of a component or mounting a component to a surface. 
     SUMMARY 
     In general, the present disclosure is directed toward systems and methods of removing an adhesive from a component (also referred to as a “substrate”), where the adhesive exhibits stretch release properties. An adhesive removal system may include a first member that engages with the component, where a layer of stretch release adhesive is bonded to at least one surface of the component, and an adhesive removal member that moves the adhesive and component relative to each other in order to stretch the adhesive and release the adhesive from a bond surface of the component. At least a portion of the adhesive layer, such as a tab defined by the adhesive or otherwise coupled to the adhesive layer, may be coupled to the adhesive removal member, e.g., with the aid of an attachment mechanism (e.g., a clamp) or by adhering the portion of the adhesive layer to the adhesive removal member. The adhesive removal member may apply a pulling force to one portion of the adhesive layer in order to stretch the layer of adhesive, where the portion may be a side of the adhesive layer portion that defines a dimension between a first side and a second side. In some embodiments, the adhesive removal member applies a substantially uniform pulling force along the dimension (e.g., a length or width) between the first side and the second side of the adhesive layer. The adhesive removal member may be manually actuated by a user or by an automated device, such as a motor coupled to a control device. The automated device may be used alone or in combination with user interaction to actuate the adhesive removal member. 
     In some embodiments, the adhesive removal member comprises a rotatable portion that helps stretch the adhesive of the adhesive layer and release the adhesive layer from the component. For example, the adhesive removal member may comprise a mandrel or friction rollers that are coupled to a base at a fixed position or a mandrel that is movable relative to the base, e.g., along a gear track or movable relative to the first member that holds the component. After mechanically coupling at least a portion of the adhesive to the adhesive removal member, the rotatable portion of the adhesive removal member may be rotated, thereby applying a pulling force to the adhesive to stretch the adhesive and draw the adhesive away from the bond surface of the component. In some embodiments, the first member and rotatable portion of the adhesive removal member may be held in relatively fixed positions relative to each other or may be movable relative to each other. 
     In other embodiments, the adhesive removal member may comprise a second member that couples to at least a portion of the adhesive, and features that moves the first member and second member relative to each other. For example, the features may include a track on which the first member and/or second member are mounted, where the track enables the first and second members to move relative to each other, or enable the first and second members to move in substantially opposite directions. As another example, the second member may include a weight that is gravity fed away from the first member. 
     An adhesive removal system may include a cutting member in some embodiments in order to help remove the stretched and released adhesive from the rotatable portion, as well as features for collecting the adhesive that is removed from a component. The systems and methods described herein may be useful for removing an adhesive layer that is positioned between a glass substrate (or plate) and a liquid crystal display (LCD) without substantially damaging the glass substrate or the LCD. After removing the adhesive from the component, a user may determine whether the component has been damaged, e.g., as a result of the adhesive removal process. 
     In one embodiment, the present disclosure is directed to a system comprising a first member that holds a component comprising an adhesive layer, and an adhesive removal member that comprises a rotatable portion that moves the adhesive layer relative to the component. 
     In another embodiment, the present disclosure is directed to a system comprising a base, a first member that holds a component comprising an adhesive layer, and a second member that couples to at least a portion of the adhesive layer, wherein at least one of the first or second members are movably mounted to the base, the first and second members being movable relative to each other. 
     In another embodiment, the present disclosure is directed to a system comprising means for holding a component comprising an adhesive layer, and means for moving the adhesive layer and component relative to each other, wherein the means for moving couples to at least a portion of the adhesive layer. 
     In another embodiment, the present disclosure is directed to a system comprising introducing a component into a first member of an adhesive removal system, wherein the component comprises an adhesive layer, coupling at least a portion of the adhesive layer to an adhesive removal member, and actuating the adhesive removal member to stretch the adhesive. 
     In another embodiment, the present disclosure is directed to a system comprising securing a component to first member of an adhesive removal system, where the component comprises an adhesive layer, coupling at least a portion of the adhesive layer to a second member of the an adhesive removal member, and moving at least one of the first or second members along a track to stretch the adhesive. 
     In another embodiment, the present disclosure is directed to a computer-readable medium containing instructions. The instructions cause a programmable processor to actuate an adhesive removal member of an adhesive removal system. In one embodiment, the instructions cause a programmable processor to rotate an adhesive removal member at a speed sufficient to stretch an adhesive that is bonded to a component, and draw the adhesive away from a component. 
     In one aspect, the present disclosure provides for a device for removing a stretch release adhesive from at least one substrate, the device comprising: (a) a base having a top surface and opposing first and second edges; (b) a first side wall disposed on the top surface and along the first edge of the base; (c) a second side wall disposed on the top surface and along the second edge of the base; (d) a platform having means for attaching to the first and second side walls and having opposing, front and back edges; and (e) a support plate disposed proximate to the front edge of the platform. The combination of the base, the first side wall, the second side wall, and the platform forms a cavity comprising means for supplying a carrier tape to the support plate thereby allowing the stretch release tape to engage with the carrier tape. 
     The details of one or more embodiments of the present disclosure are set forth in the accompanying drawings and the description below. Other features, objects, and advantages of the present disclosure will be apparent from the description and drawings, and from the claims. 
    
    
     
       BRIEF DESCRIPTION OF DRAWINGS 
         FIGS. 1 and 2  are schematic illustrations of an embodiment of an adhesive removal system. 
         FIG. 3  is a schematic partial cross-sectional view of a substrate and a platform of the adhesive removal system of  FIG. 1 . 
         FIGS. 4A-4C  are schematic partial cross-sectional views of the adhesive removal system of  FIG. 1 , and illustrate an adhesive being pulled from a substrate. 
         FIG. 5  is a schematic side view of an embodiment of a mandrel that includes a structured outer surface. 
         FIG. 6  is a schematic perspective view of another embodiment of an adhesive removal system that includes a rotatable portion to draw an adhesive from a component, where the rotatable portion is easily removed from a base. 
         FIGS. 7A-7C  are schematic illustrations of other examples of platforms that may be interchangeably coupled to a base of an adhesive removal system. 
         FIGS. 8A and 8B  are schematic perspective views of another embodiment of an adhesive removal system, which includes a cutting member for removing adhesive from a mandrel. 
         FIGS. 9A and 9B  are a schematic cross-sectional illustration of a cutting member of an adhesive removal system. 
         FIGS. 10A and 10B  are schematic perspective views of another embodiment of an adhesive removal system, which includes a cutting system for removing adhesive from a mandrel. 
         FIGS. 11A-13B  are schematic perspective views of another embodiment of an adhesive removal system, which includes a nip roller system to exert a pulling force on adhesive that is adhered to a component. 
         FIGS. 14A and 14B  are schematic perspective views another embodiment of an adhesive removal system, which includes rollers for arranging removed adhesive into an organized aggregation of adhesive. 
         FIGS. 15A and 15B  are schematic perspective views another embodiment of an adhesive removal system, which includes gears and a gear train and/or rack and pinion for driving the rotation of a mandrel that applies a pulling force to an adhesive layer of a component. 
         FIGS. 16A and 16B  are schematic perspective views another embodiment of an adhesive removal system, which stretches an adhesive layer of a component by sliding a beam along a channel. 
         FIGS. 17A and 17B  are schematic perspective views another embodiment of an adhesive removal system, which utilizes vacuum force to hold a component. 
         FIGS. 18A-18C  are schematic illustrations of another embodiment of an adhesive removal system, which includes cam rollers to hold a component. 
         FIGS. 19A-19B  are schematic perspective views another embodiment of an adhesive removal system, which includes clamping members to hold a component. 
         FIGS. 20A-20B  are schematic perspective views another embodiment of an adhesive removal system, which includes a nip roller system to exert a pulling force on adhesive that is bonded to a component and a collection bin that receives adhesive removed from the component. 
         FIG. 21  is a schematic side view of another embodiment of an adhesive removal system, which includes a weight to exert a pulling force on adhesive that is bonded to a component. 
         FIG. 22  is a schematic side view of a system that may be used in any adhesive removal systems including a collection roller in order to help maintain a particular orientation between the portion of adhesive layer being removed from component and an adhesive removal member. 
         FIG. 23  is a perspective view of another exemplary adhesive removal device in accordance with this disclosure. 
         FIG. 24  an exploded view of the embodiment of  FIG. 23 . 
         FIG. 25  is a partial cut away side view of the embodiment of  FIG. 23 . 
         FIG. 26  is a schematic, cross-sectional view of an exemplary stretch release adhesive adhered to a plurality of substrates. 
     
    
    
     These figures are idealized, are not drawn to scale, and are intended only for illustrative purposes. 
     DETAILED DESCRIPTION  
       FIG. 1  is a schematic perspective view of an adhesive removal system  10 , and  FIG. 2  is a schematic exploded view of the adhesive removal system  10 . Adhesive removal system  10  includes base  12 , mandrel  14 , cover member  16 , and platform  18 . Adhesive removal system  10  is useful for removing an adhesive layer  20  from a component  21 , where adhesive of adhesive layer  20  comprises stretch release properties. Adhesive comprising stretch release properties may be adhered to at least a portion of component  21  and then removed by stretching the adhesive in a direction substantially along the bond surface of component  21  or up to an angle of about 35 degrees (°) relative to a major surface of the bond surface of component  21 . Some stretch release adhesives may be removed from component  21  (or “substrate  21 ”) without leaving traces of residue on component  21  and without imparting any perceptible damage to the bond surface of component  21 . An example of a stretch release adhesive is described in U.S. Pat. No. 5,989,708 (Kreckel), hereby incorporated by reference. 
     In the embodiment shown in  FIG. 2 , component  21  includes two bond surfaces defined by glass plate  22  and a liquid crystal display (LCD) module  24 , which may include a respective glass plate, an LCD element (e.g., including liquid crystals), and a touch panel display. Alternatively, the bond surfaces may be defined by two glass plates or glass plate  22  and a touch panel display. Adhesive  20  may be, for example, an optically clear adhesive exhibiting stretch release properties, such as the adhesive described in commonly-assigned U.S. Provisional Patent Application No. 61/020,423, entitled, “STRETCH RELEASING OPTICALLY CLEAR PRESSURE SENSITIVE ADHESIVE”, filed on Jan. 11, 2008; U.S. Provisional Patent Application No. 61/036,501 entitled “OPTICALLY CLEAR STRETCH, RELEASABLE ADHESIVE TAPE”, filed on Mar. 14, 2008; and U.S. Provisional Patent Application No. 61/141,767, entitled, “STRETCH RELEASABLE ADHESIVE TAPE”, filed on Dec. 31, 2008. 
     In some examples, glass plate  22  and LCD module  24  are separated by a about 175 micrometers, i.e., adhesive layer  20  is about 175 micrometers thick. Component  21  may be, for example, a display of a mobile handheld device (e.g., a mobile telephone, a personal digital assistant, a portable music player, and the like), a display of a computing device (e.g., a laptop computer or a desktop computer) or another display, such as a display of a television. In other embodiments, adhesive removal device  10  may be used to remove an adhesive layer  20  from another component. In general, adhesive removal system  10  may be configured to accommodate substrates having various sizes and configurations. Accordingly, while adhesive removal system  10  is primarily described with respect to component  21  including glass plate  22  and LCD module  24 , the invention is not so limiting. 
     In some cases, it may be desirable to remove adhesive layer  20  from component  21  in order to rework the arrangement between glass plate  22  and LCD module  24 , in order to replace at least one of glass plate  22  or LCD module  24  or to remove contaminants (e.g., dust) that may be trapped between adhesive layer  20  and glass plate  22  or between adhesive layer  20  and LCD module  24 . Other reasons for removing adhesive layer  20  from component  21  are also possible. It may be desirable to remove adhesive layer  20  to separate the parts of component  21  rather than disposing of the entire component  21  for part-conservation reasons, as well as for waste minimization. If glass plate  22  and LCD module  24  are separated from each other, as well as adhesive layer  20 , without substantial damage, glass plate  22  and/or LCD module  24  may be recycled, e.g., reused in another component. Stretch release adhesive  20  enables glass plate  22  and LCD module  24  to be separated from each other without substantially damage to glass plate  22  or LCD module  24 . Adhesive removal system  10  helps remove adhesive layer  20  from component  21 . 
     After removing the adhesive from the component, a user may determine whether the component has been damaged, e.g., as a result of the adhesive removal process. For example, in the case of LCD module  24  (or LCD panel), the user may plug LCD module  24  into a handheld device (e.g., a mobile phone)or another device that includes a similar LCD display. The backlight of the handheld device may be activated and damaged pixels of the LCD module may become visible to the user. In this way, the user may visually inspect component  21  for damage after adhesive layer  20  is removed therefrom. 
     In order to remove stretch release adhesive layer  20  from component  21 , it may be desirable to exert a pulling force to stretch adhesive layer  20  that is substantially evenly distributed along the entire side from which adhesive layer  20  is pulled. For example, if adhesive layer  20  is pulled along width W 1 , it may be desirable to exert a substantially even pulling force along the entire width W 1 , rather than concentrating the force at one portion of width W 1 . Similarly, if adhesive layer  20  is pulled along length L 1 , it may be desirable to exert a substantially even pulling force along the entire length L 1 , rather than concentrating the force at one portion of length L 1 . Pulling at one portion of width W 1  or length L 1  may cause adhesive layer  20  to rip, tear or otherwise break. Adhesive removal system  10  may help exert a substantially even pulling force along the pull-side of adhesive layer  20 . In addition, as described in further detail below, adhesive removal system  10  may help pull adhesive layer  20  from component  21  within a particular range of angles. 
     Base  12  of adhesive removal system  10  supports component  21  relative to the adhesive removal portion of system  10 , and, in particular, mandrel  14 . Base  12  defines openings  26 A,  26 B configured to receive arms  28 A,  28 B, respectively, of mandrel  14 . At least one of the arms  28 A,  28 B may be spring-loaded, and the spring-loaded arm may be depressed toward the opposing arm in order to size mandrel  14  for fitting into base  12  and allow arms  28 A,  28 B to be introduced through openings  26 A,  26 B. In the embodiment shown in  FIGS. 1 and 2 , arms  28 A,  28 B are rotatably mounted within openings  26 A,  26 B of base  12  with the aid of bearings  30 A,  30 B. Bearings  30 A,  30 B may be positioned between arms  28 A,  28 B, respectively, and openings  26 A,  26 B of base  12 . In this way, bearings  30 A,  30 B provide an interface between mandrel  14  and openings  26 A,  26 B. Bearings  30 A,  30 B may be any suitable bearing configured to permit rotational movement between mandrel  14  and base  12 . For example, bearings  30 A,  30 B may be ball bearings, sliding bearings, fluid bearings, and the like. An aperture defined by bearings  30 A,  30 B may be configured to engage with the outer surfaces of arms  28 A,  28 B, such that bearings  30 A,  30 B are interference fit with arms  28 A,  28 B, respectively. Other mechanisms for mechanically coupling bearings  30 A,  30 B and arms  28 A,  28 B, respectively are contemplated, such as the use of an adhesive or welding (e.g., ultrasonic welding). In addition, in some embodiments, arms  28 A,  28 B may be directly couples to base  12  without the aid of bearings  30 A,  30 B. 
     Platform  18  is secured within base  12  with the use of any suitable coupling technique, such as, but not limited to, interlocking parts (e.g., a snap fit), an adhesive, welding (e.g., ultrasonic welding), screws, nails or the like. In particular, platform  18  and mandrel  14  are coupled to base  12  such that mandrel  14  and platform  18  are held at a relatively constant distance relative to each other. In some embodiments, platform  18  may be removably mounted to base  12 , which may enable different platforms to be interchangeably coupled to base  12 . The different platforms may help customize adhesive removal system  10  to different sized components. In addition, a removable platform  18  may be useful for adhesive removal system  10 , which may inadvertently acquire a build-up of adhesive or other contaminants over time. 
     Platform  18  defines a compartment  32  sized and configured to engage with LCD module  24  of component  21 . In other embodiments, compartment  32  may be sized and configured to receive glass plate  22  of component  21  instead of or in addition to LCD module  24 . Walls  32 A- 32 D of compartment  32  are sized based on walls  24 A- 24 D, respectively, of LCD module  24 . In one embodiment, walls  32 A- 32 D are sized to engage with walls  24 A- 24 D of LCD module  24  when component  21  is introduced into compartment  32 . However, in some cases, a friction fit between walls  24 A- 24 D and walls  32 A- 32 D may be undesirable because ease of removal of LCD module  24  after adhesive layer  20  is removed from component  21  may be desirable. A depth of compartment  32  (measured substantially along the z-axis direction, where orthogonal x-y-z axes are shown in  FIG. 2 ) may be less than or equal to a depth of LCD module  24  (also measured substantially along the z-axis direction), such that when component  21  is introduced into compartment, adhesive layer  20  protrudes from compartment  32 , as schematically shown in  FIG. 3 . 
       FIG. 3  is a schematic cross-sectional illustration of component  21 , which is received in compartment  32  of platform  18 . As shown in  FIG. 3 , depth D 1  of walls  32 A- 32 D of compartment  32  is less than or equal to depth D 2  of LCD module  24 . In this way, when component  21  is introduced into compartment  32 , adhesive layer  20  and glass plate  22  sit at or above a top surface  18 A of platform  18 . As described below, this arrangement between component  21  and platform  18  enables adhesive  20  to be separated from glass plate  22  and LCD module  24 . 
     Although  FIGS. 2-3  illustrate a platform  18  defining compartment  32  that has dimensions (length L 2  and width W 2 , as shown in  FIG. 2 ) that substantially match the dimensions of LCD module  24 , in other embodiments, compartment  32  may have other suitable dimensions. For example, platform  18  may have a greater length L 2  and/or width W 2  than LCD module  24 , and may include movable members that engage with a portion of component  21  once the portion of component  21  is introduced into compartment  32 . In this way, compartment  32  may accommodate different sized components  21 . As another example, platform  18  may have a greater length L 2  and/or width W 2  than LCD module  24  and LCD module  24  may sit within the larger space defined by compartment  32  with or without any further mechanisms to secure LCD module  24  within compartment  32 . Other embodiments of platforms are described with respect to  FIGS. 7A-7C . 
     In some cases, cover member  16  may be used to help secure component  21  within compartment  32  defined by platform  18 . In the embodiment shown in  FIGS. 1-2 , cover member  16  defines lip  34  that may engage with glass plate  22  of component  21  when cover  16  is coupled to base  12 . Slot  36 , which is define by lip  34  and platform  18  when cover member  16  is attached to base  12 , may be sized to receive adhesive layer  20 . Adhesive layer  20  may be pulled from component  21  through slot  36  defined by lip  34  of cover  16 , and, as adhesive layer  20  is pulled from component  21 , glass plate  22  may engage with an interior surface of lip  34  (not shown in  FIG. 2 ) and LCD module  24  may engage with wall  32 C of compartment  32 . In this way, glass plate  22  and LCD module  24  may resist any pulling forces that result from pulling adhesive  20  from component  21  and the position of glass plate  22  and LCD module  24  may remain substantially fixed. 
     Adhesive layer  20  may be pulled from component  21  with the aid of rotatably mounted mandrel  14 . Adhesive layer  20  defines tab  20 A (shown in  FIG. 3 ), which may be a portion of adhesive layer  20  that is not bonded to component  21 , or may be defined by another element that is directly or indirectly attached to adhesive layer  20 . Adhesive layer  20  may be coupled to mandrel  14  by any suitable technique. In one embodiment, tab  20 A is adhered to mandrel  14 , as shown in  FIG. 4A , which is a schematic cross-sectional view of component  21 , platform  18 , and mandrel  14 . In the embodiment shown in  FIG. 4A , tab  20 A of adhesive layer  20  is introduced into groove  15  defined by mandrel  14 , and adheres to a surface of groove  15 . Alternatively, tab  20 A may be bonded to a different surface of mandrel  14 , such as an outer surface. Base  12  is not shown in the schematic cross-sectional views of  FIGS. 3-4C  for clarity of illustration. 
     Prior to bonding tab  20 A to mandrel  14  or another adhesive removal member, tab  20 A may be at least partially covered with a release liner in order to help prevent tab  20 A from inadvertently bonding to another surface prior to the adhesive removal process. The release liner may be, for example, a polymer film or another material that may easily be removed from adhesive layer  20 . In some embodiments, the release liner or tape may remain on tab  20 A during the adhesive removal process. For example, a clamp may attach tab  20 A of adhesive  20  to mandrel  14 , and the release liner or tape may help tab  20 A from adhering to the mandrel  14 . As another example, if adhesive  20  is pulled from component  21  with the aid of nip rollers, as described with respect to  FIGS. 11A and 11B , the release liner may remain on tab  20 A in order to allow tab  20 A to be led through the nip rollers without adhering thereto. 
     In other embodiments, tab  20 A, which may or may not be covered with a release liner, may be coupled to mandrel  14  using any suitable technique. For example, in some embodiments, mandrel  14  may include a mechanism that clamps or otherwise engages with and holds tab  20 A. Thus, while a technique including bonding tab  20 A to mandrel  14  is primarily referred to in the description of  FIG. 4 , in other embodiments, other techniques for coupling adhesive layer  20  to mandrel  14  are contemplated. 
     As shown in  FIG. 4A , in order to bond tab  20 A to mandrel  14 , adhesive layer  20  is stretched substantially along the major planes of the surfaces of component  21  to which adhesive layer  20  is bonded. In the embodiment shown in  FIG. 4 , the major planes of the surfaces of component  21  to which adhesive layer  20  is bonded include major surface  22 A of glass plate  22  and major surface  24 E of LCD module  24 . Because adhesive layer  20  has stretch release properties, adhesive layer  20  may be stretched relatively extensively in the bond plane (the x-axis direction in  FIG. 4A ) without breaking. In order to remove stretch release adhesive layer  20  from component  21 , adhesive layer  20  is stretched, e.g., by pulling adhesive layer  20  in a direction away from component  21 . With some stretch release adhesives, adhesive layer  20  may be stretched in a direction substantially parallel to bond surfaces  22 A,  24 E of component  21  in order to remove adhesive layer  20  from component  21  such that there is no visible residue remaining on component  21  and no visible damage to the component  21 . In addition, some stretch release adhesives permit adhesive layer  20  to be stretched in a direction in a range of about 0° (i.e., substantially parallel) to about 35° relative to bond surfaces  22 A,  24 E. However, different stretch release adhesives may be removed from component  21  with other desirable angles of stretch. 
     In the embodiment of adhesive removal system  10  shown in  FIGS. 1-4 , adhesive layer  20  may be pulled in a direction away from component  21  by rotating mandrel  14  in a direction  36  (shown in  FIG. 4A ) away from component  21  (e.g., the counterclockwise direction). In some embodiments, mandrel  14  may be manually rotated by a user, e.g., by directly or indirectly grasping and rotating one or both arms  28 A,  28 B of mandrel  14 . Arms  28 A,  28 B may be indirectly grasped and rotated, e.g., by coupling a knob to arms  28 A,  28 B or by coupling another type of member that provides a grip surface for arms  28 A,  28 B. In other embodiments, mandrel  14  may be rotated with the aid of an automated device, such as a gear motor that is coupled to a controller that controls the gear motor. 
     As mandrel  14  is rotated in the counterclockwise direction  36 , adhesive layer  20  is pulled from component  21  and wraps around mandrel  14 . In some embodiments, adhesive removal system  10  includes a rotation-limiting member that discourages mandrel  14  from rotating in a direction toward component  21  (i.e., in a clockwise direction in  FIG. 2 ). For example, bearings  30 A,  30 B ( FIG. 2 ) may each by coupled to a ratcheting mechanism, worm gear or suitable feature that limits the movement of mandrel  14  in the clockwise direction. Limiting rotation of mandrel  14  in the clockwise direction may help prevent portions of adhesive layer  20  that have been pulled from component  21  from being pulled back to component  21  and rebonding to component  21 . Adhesive that has been stretched may be relatively difficult to remove from component  21 . Adhesive  20  may have a maximum amount of stretch prior to tearing, ripping or otherwise breaking. Thus, if stretched adhesive  20  is rebonded to component  21 , it may be difficult to re-stretch the adhesive  20  in order to remove the rebonded stretched adhesive from component  21 . 
     In some cases, such as if rotation of mandrel  14  in a direction substantially opposite to direction  36  is limited with a ratcheting mechanism, some rotation of mandrel  14  toward component  21  may be permitted. For example, system  10  includes one or more ratchets with a gearwheel or another member forming teeth, the teeth may only prevent movement in a direction substantially opposite to direction  36  at discrete points (e.g., when a pawl or another finger is positioned between the teeth of the gearwheel). 
     In embodiments in which an electromechanical device or another automated device is used to rotate mandrel  14 , the device may include a self-regulating motor or another system that helps prevent turning mandrel  14  at a speed that stresses adhesive  20 . It may be undesirable to pull adhesive layer  20  from component  21  too fast in order to help prevent overstressing adhesive layer  20 . If adhesive layer  20  is overstressed, adhesive layer  20  may break or tear. Examples of self-regulating motors include motors utilizing planetary gears. In some embodiments, the speed at which a device automatically rotates mandrel  14  (e.g., the revolutions per minute of mandrel  14 ) may be regulated by a controller, which may be programmed to control rotation of mandrel  14  at or below a particular speed threshold. The desirable speed at which the device may rotate mandrel  14  may be selected based on the properties of the adhesive  20 , as well as other factors, such as the dimensions of mandrel  14  and the distance between mandrel  14  and component  21 . 
     As previously indicated, with some stretch release adhesives, adhesive layer  20  is pulled from component  21  at a particular angle, e.g., less than about 35° relative to bond surfaces  22 A,  24 E of component  21  in order to effectively use the stretch release properties of adhesive layer  20  to remove adhesive layer  20  from component  21 . As adhesive layer  20  wraps around mandrel  14 , the angle A (shown in  FIG. 4B ) at which adhesive layer  20  is pulled from component  21  increases. In some cases, angle A may exceed the desirable angle for stretching adhesive layer  20  in order to maximize the stretch release properties of adhesive layer  20  and minimize stress applied to adhesive layer  20 . In addition, in some cases, as angle A increases, the possibility of adhesive layer contacting edge  38  (shown in  FIG. 4B ) of glass plate  22  increases. Contact between adhesive layer  20  and edge  38  may be undesirable because edge  38  may apply pressure to adhesive layer  20  as adhesive layer  20  is pulled against edge  38 , and may puncture or otherwise cause adhesive layer  20  to tear, rip, break or the like. 
     Adhesive  20  may re-adhere to glass plate  22  as it is pulled from component  21  if the angle A between the bond surfaces of component  21  and the surface of mandrel  14  or the outer surface of removed adhesive collected on mandrel  14  is such that portions of adhesive layer  20  contact bond surfaces  22 A of glass plate  22 . The possibility that portions of adhesive  20  that have been pulled from component  21  will re-adhere to glass plate  22  may be increased if glass plate  22  has a greater dimension along the x-axis direction than LCD module  24 , as shown with glass plate  22 ′ in  FIG. 4C . 
     In order to help minimize or even eliminate the consequences of increasing angle A beyond a desirable range of angles (e.g., about 35° or less), adhesive removal device  10  may include features that enable angle A between adhesive layer  20  and mandrel  14  to remain at or below the threshold angle. In some embodiments, mandrel  14  may be movable relative to base  12 , such that mandrel  14  may move in the negative z-axis direction as the thickness of adhesive layer  20  on mandrel  14  increases. In this way, the angle A between adhesive layer  20  and the bond surfaces  22 A,  24 E of component  21  may be maintained at or below a threshold angle. 
     A user may manually move mandrel  14  or mandrel  14  may be moved automatically as sensors within base  12  or on mandrel  14  detect a thickness of adhesive layer  20  on mandrel  14  and/or the angle A between the portion of adhesive layer  20  being stretched onto mandrel  14  and the bond surfaces  22 A,  24 E of component  21 . For example, base  12  may define a plurality of sets of openings  26 A,  26 B that each have a different z-axis position. The plurality sets of openings  26 A,  26 B may be connected, such that arms  28 A,  28 B of mandrel  14  may be slid or otherwise moved between adjacent openings  26 A,  26 B without removing mandrel  14  from base  12 . As another example, mandrel  14  may be rotatably mounted to base  12  by a lever mechanism that enables the z-axis position of mandrel  14  to be adjusted. Other arrangements for adjusting the z-axis position of mandrel  14  are contemplated. For example, the z-axis position of component  21  may be adjusted as the thickness of adhesive collected on mandrel  14  increases. 
     In addition to or instead of moving mandrel  14  in order to maintain the angle A between bond surfaces  22 A,  24 E of component  21  and the portion of adhesive layer  20  being removed from component  21  within a desirable range, the portions of adhesive layer  20  wrapped around mandrel  14  may be removed as adhesive layer  20  is pulled from component  21 . An example of a system that includes a cutting device to remove adhesive layer  20  from mandrel  14  is described below with reference to  FIGS. 8A-10B . 
     Mandrel  14  may define a structured (e.g., a microstructured) surface on which the adhesive  20  removed from component  21  may collect.  FIG. 5  is a schematic perspective view of an embodiment of a mandrel  44  that includes a structured outer surface  46 . Adhesive layer  20  may be wrapped around outer surface  46  as adhesive layer  20  is pulled from component  21 . Structured (also referred to as “replicated”) outer surface  46  help minimize the surface area of mandrel  44  that adheres to any removed adhesive  20 . Minimizing the surface area of mandrel  44  that bonds to any removed adhesive  20  may help minimize the bond strength between the removed adhesive  20  and the mandrel  44 . Accordingly, structured outer surface  46  may help decrease the force and, in some cases, the effort required to detach adhesive  20  from mandrel  44 . The microstructures defined by outer surface  46  may be formed by any suitable technique, such as by molding or embossing mandrel  44  or at least a portion of mandrel  44 . 
     While the embodiment of adhesive removal system  10  shown in  FIGS. 1-4C  illustrate a system  10  that exerts a pulling force on a minor edge of adhesive layer  20  (i.e., along width W 1 , rather than length L 1 , in embodiments in which length L 1  is greater than width W 1 ), in other embodiments, system  10  may exert a pulling force along a major edge of adhesive layer  20 .  FIG. 6  is a schematic perspective view of adhesive removal system  10  that includes a platform  50  that is configured to receive component  21  such that a pulling force is exerted along the length L 1  of adhesive layer  20 . As previously indicated, base  12  of adhesive removal system  10  may be configured to receive different platforms that are sized to receive different substrates, and, as shown in  FIG. 6 , may be sized to orient the same substrate in different directions relative to mandrel  14 . Platforms  18  ( FIG. 2) and 50  are examples of different platforms that may be interchangeably coupled to base  12 . 
     Adhesive layer  20  may define a tab  20 B, which is similar to tab  20 A, along the length LI instead of or in addition to tab  20 A that extends along the width W 1  of adhesive layer  20 . Tab  20 B along the length L 1  of adhesive layer  20  may be bonded to mandrel  14  or otherwise attached to mandrel  14 , and adhesive layer  20  may be removed from component  21  using the techniques described above with respect to  FIGS. 1-4C . 
     In the embodiment shown in  FIG. 6 , rather than defining openings  26 A,  26 B ( FIGS. 1-2 ), base  12  defines notches  54 A,  54 B configured to receiving arms  28 A,  28 B of mandrel  14 . Notches  54 A,  54 B permit mandrel  14  to be dropped into base  12  without the need to modify the size of mandrel  14  by depressing one of the arms  28 A,  28 B. Also shown in  FIG. 6  is knob  52 , which is coupled to arm  28 B of mandrel  14 . Knob  52  provides a gripping surface that a user or automated device may grasp in order to rotate mandrel  14 . Knob  52  may also help prevent mandrel from shifting along the y-axis direction. 
       FIGS. 7A-7C  are schematic illustrations example of platforms that may be interchangeably coupled to base  12  in place of platform  18  shown in  FIG. 2 .  FIG. 7A  illustrates a schematic perspective view of platform  60 , which is configured to receive substrates having different sizes. In particular, platform  60  defines compartments  62 ,  64 ,  66 , and  67 , which are configured to receive different-sized substrates. For example, compartment  62  may be configured to receive at least a portion of an LCD display from a mobile phone, compartment  64  may be configured to receive at least a portion of an LCD display from a portable digital music player, compartment  66  may be configured to receive at least a portion of an LCD display from a personal digital assistant, and compartment  67  may be configured to receive at least a portion of an LCD display from a laptop computer. The depth of each compartments  62 ,  64 ,  66 ,  67  (measured substantially along the z-axis direction) may differ or may be the same. Although compartments  62 ,  64 ,  66 ,  67  are shown to have rectangular shapes in  FIG. 7A , in other embodiments, compartments  62 ,  64 ,  66 ,  67  may be shaped to receive substrates having other configurations. 
     Platform  60  may be coupled to base  12  and components may be introduced into any of the compartments  62 ,  64 ,  66 ,  67 . The user may select the compartment  62 ,  64 ,  66 ,  67  that best accommodates the component. For example, in  FIG. 7A , a portion of a display  68  of a laptop computer is introduced into compartment  67 , such that a glass panel of the display is disposed within compartment  67  and an adhesive layer  69  bonded to the glass panel protrudes from the compartment  67 . 
     Adhesive removal device  10  removes a stretch release adhesive  69  from display  68  by applying a tension force that is substantially evenly distributed along an edge of the adhesive  69 . The substantially even force may be exerted along the edge of the adhesive, regardless of whether the edge of the adhesive is centered relative to mandrel  14 . For example,  FIG. 7A  illustrates adhesive layer  69  of the display  68  in a stretched state, where adhesive layer  69  has been partially pulled from display  68  by mandrel  14 , which applies a substantially uniform pulling force along the width of adhesive layer  69  (measured substantially along the y-axis direction). Thus, it is believed that adhesive removal device  10  may remove adhesive from a substrate positioned in compartment  62  or compartment  66  despite the fact that the compartment  62  may not be centered with mandrel  14  or another device that applies pulls the adhesive from the substrate. Mandrel  14  may substantially simultaneously apply a pulling force to adhesive layers of multiple components. 
     In other embodiments, a plurality of platforms may be attached to base  12 , where at least two of the platforms define a different sized compartment.  FIG. 7B  illustrates an adhesive removal system  75  that includes a plurality of platforms  76 ,  77 ,  78 ,  79 . As shown in  FIG. 7B , platforms  76 ,  77 ,  78 ,  79  may simultaneously receive respective substrates that includes an adhesive. In addition, each platform  76 ,  77 ,  78 ,  79  may have a cover member  76 A,  77 A,  78 A,  79 A, respectively. Alternatively, two or more of the platforms  76 ,  77 ,  78 ,  79  may have a common cover. 
     Neither compartment  32  of platform  18  ( FIG. 2 ) nor compartments  62 ,  64 ,  66 ,  67  of platform  60 , nor the compartments of platforms  76 ,  77 ,  78 ,  79  need to define walls that surround a portion of a substrate. Instead, the platform compartments may define a front stop along the side of the compartment  32 ,  62 ,  64 ,  66  that is closest to mandrel  14 . An example of such a platform is shown in  FIG. 7C , which is a schematic top view of platform  70 . 
     Platform  70  defines a substantially planar top surface  72  and a front wall  74  protruding from the top surface  72  in the z-axis direction (substantially perpendicular to the plane of the image of  FIG. 7C ). Either glass plate  22  or LCD module  24  of component  21  may be positioned on top surface  72  and engaged with wall  74 . The depth of wall  74  (measured in the z-axis direction) may be adjustable in some embodiments. Wall  74  engages with component  21  to restrain either glass plate  22  or LCD module  24  as adhesive  20  is pulled from between glass plate  22  and LCD module  24 . In some cases, the unrestrained portion of component  21  may at least partially move with adhesive  20 , particularly as the adhesive is pulled from the portion of component  21  furthest from wall  74 . 
     Platform  70  also includes movable sidewalls  73 A,  73 B, which are movable along the y-axis direction. For example, side walls  73 A,  73 B may be movably mounted to tracks that extend along the y-axis direction. Sidewalls  73 A,  73 B may be locked in place. The y-axis position of sidewalls  73 A,  73 B be adjusted based on the configuration of component  21 . For example, sidewalls  73 A,  73 B may be moved to engage with side surfaces of component  21  in order to help more securely hold component  21  on platform  18 . Adjustable sidewalls  73 A,  73 B (and adjustable front wall  74 ) may enable platform  70  to be customizable for use with various types and sizes of substrates. In other embodiments, platform  70  may also include an adjustable or nonadjustable rear wall that is parallel to front wall  74 . 
       FIGS. 8A and 8B  are schematic perspective views of an embodiment of adhesive removal system  80 , which includes base  12 , mandrel  14  coupled to knob  52 , platform  82 , and cutting member  84 . Platform  82  is similar to platform  70  of  FIG. 7C , but does not include movable sidewalls. As shown in  FIGS. 8A and 8B , platform  82  defines a top surface  82 A, sidewalls  86 A,  86 B that protrude from top surface  82 A, and front wall  88  that protrudes from top surface  82 A. Component  21  is positioned on top surface  82 A, such that glass plate  22  is engaged with front wall  88 , while adhesive layer  20  and LCD module  24  are unconstrained. 
     After adhesive layer  20  is coupled to mandrel  14  (e.g., by directly bonding adhesive layer  20  to an outer surface of mandrel  14 , as shown in  FIGS. 8A and 8B ), mandrel  14  may be rotated in direction  36  in order to stretch adhesive  20  and remove adhesive  20  from between glass plate  22  and LCD module  24 . As the tensile forces are applied to adhesive  20  from the rotation of mandrel  14 , glass plate  22  abuts front wall  88  of platform  82 . In this way, front wall  88  restrains component  21  as adhesive  20  is removed from component  21 . As previously indicated, a user may rotate mandrel with the aid of knob  52  or mandrel  14  may be automatically rotated with the aid of an automated device that is, e.g., coupled to a computing device that controls mandrel  14 . 
     Cutting member  84  may help remove adhesive  20  from mandrel  14 . A width of cutting member  84 , which is measured substantially along the y-axis direction) substantially matches a width of mandrel  14 . For example, a width of cutting member  84  may be about 80% to about 100% the length of mandrel  14 . However, cutting member  84  may have any suitable width. In the embodiment shown in  FIGS. 8A-8B , cutting member  84  is movable toward mandrel  14  along the x-axis direction. For example, cutting member  84  may be mounted to base  12  with a threaded member (shown in  FIG. 9A ) that is coupled to knob  90 . As knob  90  is rotated in one direction (e.g., the counterclockwise direction), cutting member  84  may advance toward mandrel  14 . As knob  90  is rotated in the opposite direction, cutting member may retreat away from mandrel  14 . Cutting member  84  may be movably mounted to base  12  such that cutting member  84  does not penetrate an outer surface mandrel  84 , but, may instead contact the outer surface of mandrel  14 . In some embodiments, cutting member  84  may be mounted to base such that cutting member  84  does not contact mandrel  84 . However, in some embodiments, cutting member  84  may be mounted to base  12  such that cutting member  84  contacts an outer surface of mandrel  14  or extends into groove  15  in mandrel  14 . 
     If adhesive  20  is wrapped around mandrel  14  or otherwise attached to mandrel  14 , a user may position cutting member  84  proximate to mandrel  14 . Cutting member  84  may be positioned to penetrate all or some of the adhesive  20  on mandrel  14  in order to help detach at least a portion of the adhesive  20  from mandrel  14 . Because cutting member  84  has a width that substantially matches a width of mandrel  14 , the y-axis position of cutting member  84  does not need to be adjusted in order to remove a large portion of adhesive  20  from mandrel  14 . In some embodiments, a user or automatic device may align groove  15  with cutting member  84  and advance cutting member  84  toward mandrel  14  such that cutting member  84  extends into groove  15 . This arrangement between cutting member  84  and groove  15  allows cutting member  84  to penetrate through substantially the entire thickness of adhesive  20  collected on the outer surface of mandrel  14 . 
       FIG. 9A  is a schematic cross-sectional illustration of cutting member  84  piercing through a layer of adhesive  20  collected on an outer surface of mandrel  14 . Also shown in  FIG. 9A  is knob  90 , which is coupled to cutting member  84  with threaded member  92 . In the embodiment shown in  FIG. 9A , cutting member  84  includes an inclined surface  84 A and surface  84 B that define tip  94  for piercing through adhesive  20 . Cutting member  84  is held relatively stationary relative to mandrel  14  as mandrel  14  is rotated in order to pull adhesive  20  from component  21 . As mandrel is rotated in direction  36 , cutting member  84  removes adhesive  20  from mandrel  14  with a scraping action. In other embodiments, cutting member  84  may have different configurations. For example, cutting member  84  may define two inclined surfaces. 
     A user or automated device may engage or disengage cutting member  84  with adhesive  20  as desired. For example, in some embodiments, a sensor may be mounted to base  12  to determine when a particular thickness T of adhesive  20  on mandrel  14  has exceeded a threshold value. Upon detecting that the threshold thickness has been exceeded, a control device may actuate threaded mechanism  92  or another mechanism to advance cutting member  84  toward mandrel  14  to scrape adhesive  20  from mandrel  14 . Alternatively, the user may visually gauge the thickness of adhesive  20  on mandrel  14 , and may manually engage cutting member  14  with the adhesive  20  on mandrel  14  when desired. 
     In other embodiments, inclined surface  84 A and surface  84 B of cutting member  84  may be reversed, as shown in  FIG. 9B . 
       FIGS. 10A and 10B  are schematic perspective views of an embodiment of adhesive removal system  96 , which is similar to adhesive removal system  80  of  FIGS. 8A and 8B , but includes a different embodiment of a cutting system  98 . Cutting system  98  includes a cutting member  100  that is movably mounted to track  102 , which enables the y-axis position of cutting member  100  to be adjusted. Although track  102  is shown to be coupled to base  12  at a relative stationary position, in other embodiments, track  102  may be movably mounted to base, such that the x-axis position of cutting member  100  may be adjusted. For example, one or more threaded members similar to threaded member  92  ( FIG. 9A ) may be used to mount track  102  to base  12 . 
     In contrast to cutting member  84  of system  80  of  FIGS. 8A-8B , a width of cutting member  100  does not substantially equal the width of mandrel  14  (measured substantially along the y-axis direction). In order to cut the adhesive along the width of mandrel  14  or at least along the width of the adhesive  20 , a user or automated device may move cutting member  100  along track  102 . In the embodiment shown in  FIGS. 10A and 10B , cutting member  100  is received in groove  15  of mandrel  14 , thereby enabling cutting member  100  to remove a substantial portion of adhesive  20  from mandrel  14 . 
     Although the adhesive removal systems  10  ( FIG. 1 ),  80  ( FIG. 8A ), and  96  ( FIG. 10A ) each include a mandrel to apply a pulling force to adhesive layer  20  in order to stretch and remove adhesive layer from component  21 , an adhesive removal system may include other types of adhesive removal members.  FIGS. 11A and 11B  are schematic perspective views of adhesive removal system  110 , which includes nip rollers  112 ,  114  to apply a pulling force to adhesive layer  20 . Nip rollers  112 ,  114  may also be referred to as friction rollers. Adhesive removal system  110  further includes base  12 , platform  82 , and spring-loaded collection roller  116 , which is coupled to base  12  with spring  118 . Although platform  82  is shown in  FIGS. 11A and 11B , in other embodiments, system  110  may include other types of platforms to support component  21  or another substrate. 
     Nip rollers  112 ,  114  are rotatably mounted to base  12  such that rollers  112 ,  114  rotate in substantially opposite directions. In particular, nip roller  112  is mechanically coupled to gear  120 , which is configured to rotate in direction  37  and nip roller  114  is mechanically coupled to gear  122 , which is configured to rotate in a substantially opposite direction  36 . In general, “mechanically coupled” indicates that two elements are directly or indirectly attached or connected to each other, which may be accomplished with the use of mechanical mechanisms (screws, nails, clamps, and the like), adhesives, welding (e.g., ultrasonic welding), and any other suitable technique. Gears  120 ,  122 , which may be toothed gears, are engaged with each other, such that rotation of one gear causes rotation of the other gear in a substantially opposite direction. In some embodiments, one of the gears  120 ,  122  may be a drive gear, and the other gear may be an idle gear that is rotated by the drive gear. Knob  124  is coupled to the drive gear  120  or  122 , and a single knob  124  may be rotated in order to rotate both rollers  112 ,  114  in their respective directions. 
     In some embodiments, nip rollers  112 ,  114  are biased toward each other. For example, one roller may be stationary and the other roller may be spring-biased toward the stationary roller. In other embodiments, nip rollers  112 ,  114  are mounted such that there is a predetermined spacing between outer surfaces of rollers  112 ,  114 . The spacing between rollers  112 ,  114  may be selected based, for example, the compressive pressure to be applied to adhesive  20  when the adhesive is positioned between rollers  112 ,  114 . For example, the spacing between rollers  112 ,  114  should be sufficient to engage adhesive  20  in order to pull adhesive  20  through nip rollers  112 ,  114  and from component  21 . On the other hand, the spacing between rollers  112 ,  114 , should be insufficient to bond adhesive  20  to one or both of the rollers  112 ,  114 . The spacing between rollers  112 ,  114  is relatively consistent in order to help pull adhesive layer  20  through rollers  112 ,  114  in a substantially even manner, i.e., to apply a relatively uniform pull force to adhesive layer  20  along the side of adhesive layer  20  closest to rollers  112 ,  114 . 
     As rollers  112 ,  114  rotate in their respective directions, any material position between rollers  112 ,  114  is advanced toward collection roller  116 . In order to remove adhesive layer  20  from component  21 , a user may initially place tab  20 A of adhesive layer  20  between nip rollers  112 ,  114  or on at least one of nip rollers  112 ,  114 . As the user (alone or with the aid of an automated device) rotates knob  124 , and, therefore the drive gear  120  or  122 , nip rollers  112 ,  114 , which may be compressed toward each other, e.g., via a spring force, pull adhesive layer  20  from component  21 . Adhesive  20  that is removed from component  21  by nip rollers  112 ,  114  may be collected on collection roller  116 . Roller  116  is spring-loaded and biased in direction  36 . The bias of roller  116  applies tension to adhesive  20  as it leaves nip rollers  112 ,  114 , which enables adhesive  20  to wrap around collection roller  116 . In other embodiments, roller  116  may not apply any tension to adhesive  20  and may instead be a passive roller, or adhesive  20  may be collected onto or into device other than a collection roller  116 . 
       FIG. 12  is a schematic perspective view of adhesive removal system  130 , which is substantially similar to adhesive removal system  110  of  FIGS. 11A-11B , but includes an insert  132 , which is introduced into groove  134  of collection roller  116 . Insert  132  exhibits some flexibility and is shaped to at least partially fit within groove  134 . A groove  136  defined by insert  132  is larger than groove  134  of collection roller  116 . However, when insert  132  is introduced into groove  134  of collection roller  116 , insert  132  compresses, thereby effectively decreasing the size of the insert groove  136 . 
     Insert  132  may help customize the size of groove  134  of collection roller  116  to a particular type of adhesive  20  or a particular adhesive thickness. That is, insert  132  defines an indexing clamp for coupling to different amounts of adhesive. For example, tab  20 A of adhesive  20  may be introduced into the channel groove  136  of insert  132 , and insert  132  may be subsequently introduced into groove  134  of roller  116 . As the relatively rigid groove  134  of the roller  116  exerts a compressive force on insert  116 , the insert channel  136  decreases in size. This enables insert  132  to clamp onto adhesive tab  20 A. Insert  132  may also be used with groove  15  of mandrel  14 . 
       FIGS. 13A and 13B  are schematic perspective views of another embodiment of an adhesive removal system  140 . Just as with adhesive removal system  110  of  FIGS. 11A-11B , adhesive removal system  140  includes base  12 , platform  82 , which supports component  21  to which adhesive layer  20  is bonded, nip rollers  112 ,  114  for moving adhesive layer  20  relative to component  21 , and collection roller  116  for collecting adhesive  20  that is removed from component  21 . However, in contrast to adhesive removal system  110 , the collection roller  116  of adhesive removal system  140  shown in  FIGS. 13A-13B  is movably mounted to base  12 . That is, collection roller  116  is movable relative to nip rollers  112 ,  114  in a direction substantially along the x-axis. 
     Collection roller  116  is rotatably mounted to bracket  142 , which is slidably mounted within channels  144 A,  144 B defined by base  12 . The x-axis position of collection roller  116  may be modified by adjusting the position of bracket  142  along channels  144 A,  144 B. In the embodiment shown in  FIGS. 13A-13B , the position of bracket  142 B along channels  144 A,  144 B may be adjusted by rotating knob  146 , which is mechanically coupled to a threaded member  148  that mechanically couples bracket  142  to base  12 . Thus, turning knob  146  may either advance collection roller  116  toward nip rollers  112 ,  114  or away from nip rollers  112 ,  114 . In other embodiments, collection roller  116  may slide along channels  144 A,  144 B without the aid of a threaded member  148 . For example, channels  144 A,  144 B may define teeth or other protrusions that define preset positions for bracket  142 , whereby bracket  142  may be “locked” into place at one of the preset positions by fitting between the teeth or other protrusions. Other techniques for moving collection roller  116  relative to nip rollers  112 ,  114  and/or securing the position of collection roller  116  relative to nip rollers  112 ,  114  are contemplated. 
     It may be desirable to adjust the relative position between collection roller  116  and nip rollers  112 ,  114  in some situations. For example, collection roller  116  may be moved away from nip rollers  112 ,  114  if the thickness of adhesive  20  that collects on roller  116  impedes rotation of roller  116  due to interference with nip rollers  112 ,  114 , or if the thickness of adhesive  20  on collection roller  116  impedes rotation of nip rollers  112 ,  114 . 
     Adhesive  20  that is removed from component  21  may be collected on a mandrel or a collection roller, as described above. In other embodiments, adhesive  20  that is removed from component  21  may be collected using other suitable techniques.  FIGS. 14A and 14B  are schematic perspective views of adhesive removal system  150 , which includes rollers  152 ,  154  that receive adhesive  20  that is removed from component by nip rollers  112 ,  114  and folds the adhesive  20  into an accordion-like aggregation (or arrangement)  156 . The accordion-like arrangement  156  of the removed adhesive  20  enables the adhesive  20  to be collected into a relatively organized pile, which may be useful for controlling the removed adhesive. 
     In the embodiment shown in  FIGS. 14A and 14B , rollers  152 ,  154  are rotatably mounted to base  12  in a similar manner as nip rollers  112 ,  114 . In particular, roller  152  is mechanically coupled to gear  158 , which is configured to rotate in direction  37  and roller  154  is mechanically coupled to gear  160 , which is configured to rotate in a substantially opposite direction. Gears  158 ,  160 , which may be toothed gears, are engaged with each other, such that rotation of one gear causes rotation of the other gear in a substantially opposite direction. Gears  158 ,  160  may be similar to gears  120 ,  122  of nip rollers  112 ,  114 . Rollers  152 ,  154  are indirectly driven by nip rollers  112 ,  114 . Removed adhesive extends between nip rollers  112 ,  114  and rollers  152 ,  154 . The movement of the removed adhesive  20  as it is advanced through nip rollers  112 ,  114  and through rollers  152 ,  154  drives rollers  152 ,  154 . In other embodiments, rollers  152 ,  154  may include a separate drive device, which may be rotated manually be a user or by an automated device. 
     As rollers  152 ,  154  rotate in their respective directions, any material position between rollers  152 ,  154  is advanced away from rollers  152 ,  154  and away from nip rollers  112 ,  114 . The structure of outer surfaces of rollers  152 ,  154  define the arrangement of adhesive  20  in the aggregation  156  of removed adhesive by imparting a shape to the adhesive  20  as the removed adhesive  20  passes between rollers  152 ,  154 . Rollers  152 ,  154  may be biased toward each other or may be mounted such that there is a predetermined spacing between outer surfaces of rollers  152 ,  154 . The spacing between rollers  152 ,  154  may be selected based on, for example, the compressive pressure to be applied to adhesive  20  in order to arrange removed adhesive  20  into the accordion-like arrangement  156 . 
     Although rollers  152 ,  154  are shown with respect to an adhesive removal system that includes nip rollers  112 ,  114  for drawing the adhesive  20  from component  21 , in other embodiments, rollers  152 ,  154  may be incorporated into other adhesive removal systems described herein. 
       FIG. 15A  is a schematic perspective view of another embodiment of adhesive removal system  170  that implements another technique for removing adhesive from a component.  FIG. 15B  is a schematic exploded view of adhesive removal system  170 . Adhesive removal system  170  includes mandrel  14 , platform  18 , base  172 , gear train  174 , gears  178 A,  178 B, and cover member  182 . Platform  180  is configured to support component  21  including adhesive layer  20 , and may be similar to any of the platforms described above. Platform  18  is slidably mounted in a channel defined by gear train  174 . 
     In the embodiment shown in  FIGS. 15A and 15B , base  172  defines gear train  174 . For example, base  172  may be a molded or extruded structure, and gear train  174  may be integrally formed with base  172  during the molding or extrusion process. In other embodiments, gear train  174  may be separate from base  172  and coupled to base  172  using any suitable technique, such as an adhesive, welding (e.g., ultrasonic welding), interlocking parts, and the like. 
     Gears  178 A,  178 B are mounted to arms  28 A,  28 B, respectively, of mandrel  14 , such that the position between gears  178 A,  178 B and arms  28 A,  28 B are substantially fixed. Mandrel  14  may be movably coupled to base  172  by engaging gears  178 A,  178 B with gear train  174 . The teeth of gears  178 A,  178 B are configured to interlock with teeth of gear train  174 . As gears  178 A,  178 B are rolled along track, mandrel  14  is rotated in direction  36 . In this way, gears  178 A,  178 B drive the movement of mandrel  14 . Gears  178 A,  178 B may each include a rotation limiting member to discourage movement of mandrel  14  in direction substantially opposite to direction  36 . 
     Tab  20 A of adhesive layer  20  may be initially bonded, clamped or otherwise coupled to mandrel  14 . If component  21  is not placed on platform  18 , the user may place component  21  on platform  18 . Similarly, if gears  178 A,  178 B are not on gear train  174 , the user may place gears  178 A,  178 B, along with mandrel  14 , on gear train  174  such that the teeth of gears  178 A,  178 B are interlocked with teeth of gear train  174 . Cover member  182  may then be placed over the assembly of the platform  18 , mandrel  14 , component  21 , and gears  178 A,  178 B. 
     In order to remove stretch release adhesive  20  from component  21 , the user (alone or with the aid of an automated device) may push cover member  182  along gear train  174  and toward an end of gear train  174  that is furthest from component  21 , i.e., toward end  172 A of base  172 . Pushing cover member  182  while gears  178 A,  178 B are engaged with gear train  174  causes mandrel  14  to rotate, which, in turn, applies a pulling force to adhesive  20  to stretch adhesive  20  and draw adhesive  20  away from component  21 . In this way, gears  178 A,  178 B and gear train  174  support the removal of adhesive  20  from component  21 . In addition, pushing cover member  182  from end  172 A to end  172 B of gear train  174  also pushes platform  18  and component  21  along the length of gear train  174 . While gears  178 A,  178 B and mandrel  14  may be pushed along gear train  174  without the aid of cover member  182 , cover member  182  helps to push platform  18 , and, therefore, component  21 , and mandrel  14  and substantially the same pace. This helps maintain a relatively constant distance between component  21  and mandrel  14 . 
     In some embodiments, the length of gear train  174  (measured substantially along the x-axis direction) may be selected based on the amount of adhesive  20  within component  21 . For example, gear train  174  length may be selected such that one traversal across gear train  174  is sufficient to remove substantially all of adhesive  20  from component  21 . As another example, the gear train length may be selected such that two or more traversals across gear train  174  are sufficient to remove substantially all of adhesive  20  from component  21 . If cover member  182  reaches an end  172 A of base  172  before substantially all of adhesive  20  is removed from component  21 , the user (alone or with the aid of an automated device) may remove platform  18 , mandrel  14 , and gears  178 A,  178 B from gear train  174  and reassemble the platform  18 , mandrel  14 , and gears  178 A,  178 B with gear train  174  at the opposite end  172 B of base  172  and push the platform  18 , mandrel  14 , and gears  178 A,  178 B along gear train  174  from end  172 A to end  172 B of base  172 . This process may be repeated until substantially all or the desired amount of adhesive  20  is removed from component  21 . 
       FIGS. 16A and 16B  illustrate another embodiment of an adhesive removal system  186 , which incorporates another technique for applying a pulling force to adhesive layer  20  that is bonded to component  21 . Adhesive removal system  186  includes platform  18 , base  188 , which defines channels  190 A,  190 B, and beam  192 , which is coupled to handles  194 A,  194 B. Component  21  is restrained from movement towards beam  192  by platform  18 , which is mounted within base  188  at a fixed position. Beam  192  extends across a width of base  188  (measured along the y-axis direction) and through channels  190 A,  190 B. Beam  192  is slidably mounted in channels  190 A,  190 B, and, therefore, beam  192  may be moved along the x-axis direction relative to platform  18 . Handles  194 A,  194 B are attached to ends of beam  192 , at a fixed position relative to beam  192 . Handles  194 A,  194 B provide a surface for handling beam  192 , as well as help prevent beam  192  from sliding out of channels  190 A,  190 B. 
     Beam  192  includes a clamping mechanism  196  that mechanically couples adhesive  20  to beam  192 . For example, tab  20 A (not shown in  FIG. 16A ) of adhesive  20  may be introduced into clamping mechanism  196 . In other embodiments, adhesive  20  may be directly adhered to beam  192  without the aid of another mechanically coupling mechanism, or other mechanical coupling mechanisms may be used to attach adhesive  20  beam  192 . In order to stretch adhesive  20  and draw adhesive  20  away from component  21 , beam  192  may be slid along channels  190 A,  190 B, as indicated by arrows  198 . Because platform  18  and component  21  are held in a fixed position, a pulling force is applied to adhesive  20  as beam  192  is moved away from platform  18 . Beam  192  may be slid along channels  190 A,  190 B until the desired amount of adhesive  20  is removed from component  21 . Accordingly, the length of channels  190 A,  190 B (measured substantially along the x-axis direction) may be based on the amount of adhesive to be stretched and removed from component  21 . 
       FIGS. 17A and 17B  are schematic perspective views another embodiment of an adhesive removal system  200 , which utilizes vacuum force to hold component  21 . System  200  includes mandrel  14 , base  202 , first vacuum arm  206 , second vacuum arm  208 , and vacuum source  210 . Mandrel  14  is rotatably mounted to base  202 . As previously described, mandrel  14  may be rotated in direction  36  by rotating knob  52 . Mandrel  14  may also exhibit limited rotation in a direction substantially opposite direction  36 . 
     Rather than holding component  21  in a relatively fixed position relative to mandrel  14  with the aid of a platform (e.g., platform  18  of  FIGS. 1-2 ), vacuum arms  206 ,  208  of adhesive removal system  200  hold component  21 . In the embodiment shown in  FIGS. 17A and 17B , vacuum arm  206  applies a vacuum force to glass plate  22 , while vacuum arm  208  applies a vacuum force to LCD module  24 . One or more fluid channels within arms  206 ,  208  that are in fluid communication with vacuum source  210  provide the suction source. The vacuum force applied by arms  206 ,  208  to component  21  helps restrain movement of component  21  towards mandrel  14  as mandrel  14  is rotated to stretch adhesive  20  and remove adhesive  20  that is positioned between glass plate  22  and LCD module  24 . 
     The vacuum force applied by arms  206 ,  208  is relatively gentle, which helps preserve glass plate  22  and LCD module  24  of component  21  for reuse. Arms  206 ,  208  are biased in a direction substantially away from each other, e.g., with the aid of spring  212 . After adhesive  20  is removed from component  21 , arms  206 ,  208  may spring away from each other, thereby separating glass plate  22 , which is coupled to arm  206 , and LCD module  24 , which is coupled to arm  208 . In this way, spring biased arms  206 ,  208  may help glass plate  22  and LCD module  24  from contacting each other. Contact between glass plate  22  and LCD module  24  which may damage or at least adversely impact the performance of glass plate  22  and/or LCD module  24 . 
     Although spring  212  is not necessary, spring  212  helps to minimize any compressive forces that may be exerted on component  21 , which may push glass plate  22  and LCD module  24  and increase the adhesion between adhesive  20  and bond surfaces of component  21 . In some cases, the removal of adhesive  20  may be aided by the biased arms  206 ,  208  because arms  206 ,  208  help to pry glass plate  22  and LCD module  24  apart, which may help release adhesive  20  from glass plate  22  and LCD module  24 . In addition, applying a force that encourages movement of glass plate  22  away from LCD module  24  may help prevent adhesive  20  from re-adhereing to either glass plate  22  or LCD module  24  by maximizing the space between glass plate  22  and LCD module  24 . 
     Arms  206 ,  208  are not rigidly held in place relative to base  202 , which allows component  21  to generally pivot about spring  212 , in a direction indicated by arrow  214  when held in place by arms  206 ,  208 . In one embodiment, arms  206 ,  208  are configured to permit component  21  to pivot angle J 1  in a first direction relative to a baseline position of component  21  when arms  206 ,  208  are in a baseline position, and angle J 2  in a second direction relative to a baseline position of component  21 . The baseline position of component  21  may be achieved when no external forces are applied to arms  206 ,  208  in order to change the position of arms  206 ,  208 , which is shown in  FIG. 17B . In one embodiment, in the baseline position of arms  206 ,  208 , glass plate of component  21  is substantially parallel to a major surface  202 A of base  202 . Angles J 1  and J 2 , illustrated in  FIG. 17B , may each be in a range of about  10  to about  350 , although other pivot angles are possible in other embodiments.  FIG. 17B  also illustrates, in phantom lines, the positions of component  21  when pivoted at angles J 1  and J 2 . 
     As the thickness of removed adhesive  20  on mandrel  14  increases, component  21  may pivot to maintain a tangential alignment with the outer surface of the adhesive collected on mandrel  14 . In this way, adhesive removal system  200  may readily adapt to changes in the angle at which adhesive  20  is pulled from component  21 . As discussed above, it may be undesirable for adhesive  20  to be withdrawn from component  21  at particular angles because it may increase the possibility of adhesive  20  re-adhering to a surface of component  21  or the possibility of adhesive  20  breaking. 
       FIGS. 18A and 18B  are schematic perspective views of another embodiment of an adhesive removal system  220 , which includes cam rollers  222 ,  224  that hold component  21  in place relative to mandrel  14 . Adhesive removal system further includes mandrel  14 , which is rotatably mounted to base  226 , and knob  52 , which is coupled to mandrel  14 . Rollers  222 ,  224  are rotatably mounted to base  226  by gears  228 ,  230 , such that roller  222  rotates in direction  36  and roller  224  rotates in a substantially opposite direction. Component  21  may be pushed between cam rollers  222 ,  224 , which hold component  21  by friction fit. Rollers  222 ,  224  may be biased against each other in order to permit cam rollers  222 ,  224  to apply a compressive pressure to component  21  to help restrain movement of component  21  relative to mandrel  14 . Gears  228 ,  230  may include a rotation limitation mechanism, such as a ratchet mechanism, that helps limits rotation of roller  222  in a direction towards mandrel  14  and limits rotation of roller  224  in a direction away from mandrel  14  (i.e., direction  36 ). In some embodiments, gears  228 ,  230  may lock in order to help prevent rotation of rollers  222 ,  224  while component  21  is positioned between rollers  222 ,  224 . 
       FIG. 18C  is a schematic side view of cam rollers  222 ,  224  and component  21 , which is fixed between rollers  222 ,  224 . Cam roller  222  has an offset axis of rotation  223  (i.e., axis of rotation  223  is not centered), and cam roller  224  has an offset axis of rotation  225 . Cam rollers  222 ,  224  have a limited range of motion as a result of the offset axes of rotation  223 ,  225 . Because one end  232 A of component  21  is fixed between cam rollers  222 ,  224  and the opposing end  232 B of component  21  is unrestrained, component  21  may pivot angles P 1  and P 2  relative to a major surface of glass plate  22 . Angles P 1  and P 2  may each, independently, be in a range of about 1° to about 35°. As previously indicated, in some cases, it may be desirable for component  21  pivot in order to help maintain a tangential alignment with the outer surface of any removed adhesive that has collected on mandrel  14 . In this way, cam rollers  222 ,  224  may readily adapt the position of component  21  as the angle at which adhesive  20  is pulled from component  21  changes (i.e., as the thickness of adhesive collected on mandrel  14  increases). 
       FIGS. 19A-19B  are schematic perspective views of another embodiment of an adhesive removal system  240 , which includes mandrel  14 , mandrel knob  52 , base  242 , clamping members  244 A,  244 B,  246 , clamp knob  248 , and threaded member  250 . When component  21  in fixed place relative to mandrel  14 , a major surface of component  21  substantially extends along the z-axis direction. As shown in  FIGS. 19A and 19B , component  21  is engaged between clamping members  244 A,  244 B and  246 . 
     Clamping members  244 A,  244 B may be fixed in place, while clamping member  246  is movable along the x-axis direction with the aid of threaded member  250 . In particular, clamping member  246  and knob  248  may be mechanically coupled to opposing ends of threaded member  250 , which extends through an opening in base  242 . As knob  248  is rotated in a first direction, clamping member  246  advances toward clamping members  244 A,  244 B and as knob  248  is rotated in a second direction, clamping member retreats from clamping members  244 A,  244 B. Threaded member  250  may be threaded along its entire length, or may be partially threaded. In other embodiments, a different mechanism for moving clamping member  246  may be used in adhesive removal system  240 . However, the configuration of threaded member  250  inherently helps secure a position of clamping member  246 . 
     It may be desirable to maintain alignment between component  21  and mandrel  14  in order to help prevent adhesive of adhesive layer  20  from tearing or otherwise breaking as it is stretched and drawn away from component  21 . That is, it may be desirable for adhesive layer  20  to be aligned with an outer surface of mandrel  14  (or an outer surface defined by removed adhesive collected on mandrel  14 ) such that adhesive layer  20  does not re-adhere to either glass plate  22  or LCD module  24  as adhesive layer  20  is pulled from component  21  or so that adhesive layer  20  does not contact an edge of component  21  that may break adhesive layer  20 . In order to help maintain a particular alignment between mandrel  14  and component  21 , mandrel  14  may be adjustably mounted to base  242  such that mandrel  14  is movable along the x-axis. A user or automated device may position mandrel  14  based on the location of adhesive layer  20  between clamping members  244 A,  244 B and  246 . The location of adhesive layer  20  may change, depending on the thickness of the other elements of component  21 , which may vary depending on the component type. Accordingly, an adjustable mandrel  14  may help customize adhesive removal system  240  to different types of components. 
     In other embodiments, clamping members  244 A,  244 B may be movable along the x-axis direction in addition to clamping member  246 . Clamping members  244 A,  244 B,  246  may be self-centering. That is, in some embodiments, as threaded member  250  is rotated in the first direction, clamping members  244 A,  244 B and clamping member  246  may move toward each other while maintaining a common center point, which is selected based on the desired alignment between adhesive layer  20  and mandrel  14 . 
       FIGS. 20A and 20B  are schematic perspective views of another embodiment of an adhesive removal system  254 , which includes nip rollers  112 ,  114 , gears  120 ,  122 , roller knob  124 , base  256 , first support member  258  defining an opening  260 , second support member  262  defining an opening  264 , and collection bin  266 . Nip rollers  112 ,  114  are oriented in a different direction relative to each other compared to the embodiment of the adhesive removal system  110  shown in  FIGS. 11A and 11B . However, just as in adhesive removal system  110 , rotation of nip rollers  112 ,  114  of adhesive removal system  254 , with the aid of the respective gears  120 ,  122 , advances adhesive  20  away from component  21  and causes a substantially even pulling force to be applied across the width W 1  of adhesive layer  20 . When the force is applied to adhesive  20  while movement of component  21  is restrained, adhesive  20  is stretched and drawn away from the bond surfaces of component  21 . 
     First support member  258  supports glass plate  22  and LCD module  24  of component  21  such that adhesive layer  20  is aligned with opening  260  of first support member  258 . Opening  260  is sized to receive adhesive layer  20 , such that adhesive layer  20  may extend through opening  260  while glass plate  22  and LCD module  24  of component  21  remain engaged with support member  258 . In this way, adhesive layer  20  may be removed from component  21  while a position of component  21  remains substantially fixed. Second support member  262  helps support a different portion of component  21 , e.g., to maintain the z-axis orientation of component  21 . Opening  264  defined by second support member  262  is sized to receive component  21 . 
     In order to remove adhesive  20  from component  21 , a user may introduce component  21  into support members  258 ,  260  such that tab  20 A defined by adhesive layer  20  extends through opening  260  in first support member  258 . The user may stretch adhesive layer  20  to feed tab  20 A through nip rollers  112 ,  114 . For example, the user may stretch adhesive layer  20  to engage tab  20 A with at least one of nip rollers  112 ,  114 , and rotate knob  224  to rotate gear  120 , and, therefore, nip roller  112  in a first direction, indicated by arrow  268 , which drives gear  122  to rotate nip roller  114  in a second direction, indicated by arrow  269 , which is substantially opposite direction  268 . As nip rollers  112 ,  114  rotate in their respective directions, adhesive layer  20  may be advanced through nip rollers  112 ,  114  and stretched and pulled from component  21 . Adhesive that is removed from component  21  and advanced through nip rollers  112 ,  114  may collect in collection bin  266 . As shown in  FIGS. 20A and 20B , base  256  may be configured to fit around collection bin  266 . In other embodiments, however, base  256  may couple to a top of collection bin  266 . Other arrangements between base  256  and collection bin  266  are contemplated. 
     Glass plate  22  and LCD module  24 , which remain engaged by support members  258 ,  260  after adhesive  20  is removed from component  21 , may be recycled or discarded. 
       FIG. 21  is a schematic side view of another embodiment of adhesive removal system  270 , which includes clamping members  272 A,  272 B, support member  274  defining opening  276 , rollers  278 A,  278 B, clamp  280 , and weight  282 . In  FIG. 21 , component  21  is placed on support member  274  such that adhesive layer  20  is aligned with opening  276 . Clamping members  272 A,  272 B hold component  21  and help restrain component  21  against motion. Clamping members  272 A,  272 B may be self-centering relative to opening  276 . Weight  282  is attached to adhesive layer  20  substantially along width W 1  (shown in  FIG. 20A ) of adhesive layer  20  with the aid of clamp  280 . In order to stretch adhesive layer  20  and draw adhesive layer  20  away from component  21 , weight  282  may be released in a negative z-axis direction, such that weight  282  falls toward collection bin  266  with the aid of gravity. As weight  282  falls in the negative z-axis direction, a substantially even pulling force is applied across width W 1  of adhesive layer  20 , thereby stretching adhesive  20  and removing adhesive  20  from component  21 . The mass of the weight may be selected to apply a sufficient pulling force to adhesive  20  to stretch adhesive  20  and draw adhesive  20  away from component  21 . 
     Rollers  278 A,  278 B may be similar to nip rollers  112 ,  114  and help apply a pulling force to adhesive  20  in addition to weight  282 . In other embodiments, rollers  278 A,  278 B may be passive rollers that help guide adhesive  20  in the negative z-axis direction as weight  282  applies a pulling force to adhesive layer  20 . 
     Instead of or in addition to rollers  278 A,  278 B and/or weight  282  to apply a pulling force to adhesive layer  20 , support member  274  may be moved in a positive z-axis direction in order to apply a pulling force to adhesive  20 . For example, while tab  20 A of adhesive layer  20  is attached to weight  282  or is substantially fixed (e.g., with the aid of clamping members), support member  274  may be advanced in the positive z-axis direction, thereby separating component  21  from adhesive layer  20 , which is substantially fixed in place or is moving in the negative z-axis direction. In other embodiments, other suitable techniques for moving component  21  relative to tab  20 A of adhesive layer  20  may be implemented. For example, component  21  may be fed through nip rollers that advance component  21  in a direction substantially away from the end of adhesive layer  20  comprising tab  20 A, while tab  20 A is fixed in place or coupled to a weight  282 . 
       FIG. 22  is a schematic side view of a system  286  that may be used in any adhesive removal systems including a collection roller  288  in order to help maintain a particular orientation between the portion of adhesive layer  20  being removed from component  21  and mandrel  14  or another type of rotating adhesive removal member. Mandrel  14  is configured to rotate in a first direction substantially away from component  21  in order to help apply a pulling force to adhesive layer  20  and stretch adhesive layer  20 . Collection roller  288  is configured to rotate in a second direction (e.g., the clockwise direction in  FIG. 22 ), which is substantially opposite the direction of rotation of mandrel  14 , and adhesive  20  that is removed from component  21  is wrapped around the outer surface of the substantially cylindrical collection roller  288 . As adhesive  20  wraps around collection roller  288 , the spacing S between a center rotational axis  290  of mandrel  14  and a center rotational axis  291  of collection roller  288  increases. In order to help prevent mandrel  14  from moving relative to component  21  in order to compensate for any removed adhesive that accumulates on collection roller  116 , the center rotational axis  290  of mandrel  14  may be substantially fixed. A fixed center rotational axis  290  of mandrel  14  also enables the angle at which adhesive layer  20  is pulled from component to remain within about angle Al relative to a major surface of component  21  to which adhesive  20  is adhered (e.g., a major surface of glass plate  22  or LCD module  24 ). Angle A 1  may be in a range of about 1° to about 36° in a first direction or in a second, substantially opposite direction, as indicated by angle “−A 1 ” in  FIG. 22 , although other angles are contemplated. 
     To compensate for the thickness of removed adhesive that accumulates on collection roller  288 , collection roller  288  is fixed to surface  292  with spring  294 . Surface  292  may be any suitable surface, such as a surface of an adhesive removal system base. Spring  294  may compress to allow center rotational axis  291  of collection roller  288  to move toward surface  292  as the thickness of any adhesive accumulated on collection roller  288  increases. Movement of collection roller  288  toward surface  294  increases the distance S between center axis of rotation  290  of mandrel  14  and center axis of rotation  291  of collection roller  288 . 
       FIG. 23  shows an adhesive removal device  310  having a base  312 , a first side wall  313  disposed on one edge of the base, a second side wall  314  disposed on a second edge of the base, a platform  360  straddling between and attached to the first and second side walls. A support plate  328 , disposed adjacent to the platform, also straddles between and attaches to the first and second side walls. In this embodiment, a gap  340  lies between the support plate and the platform  360 . The combination of the base, first and second side walls, and the platform form a cavity that houses a means for supplying a carrier tape  330  to the support plate  328 . The device further includes a crank handle  352  for advancing the carrier tape  330 . In one embodiment, the crank handle moves only in one direction, e.g., in a forward direction from the perspective view as shown in the figure. The platform  360  can optionally include an aperture  361  disposed near its center. 
       FIG. 24  shows an exploded view of the embodiment of  FIG. 23  illustrating the details of components housed inside the cavity. The base  312  has a top surface  312   a  and substantially parallel opposing first and second edges  312   b,    312   c.  The first side wall  313  has a top edge  313   a,  a back edge  313   b  and a bottom edge  313   e.  The first side wall is disposed on the base such that the bottom edge  312   e  of the first side wall contacts the top surface  312   a  near the first edge  312   b  of the base. The second side  314  has a top edge  314   a,  a back edge  314   b  and a bottom edge  314   e.  The second side wall is disposed on the base such that the bottom edge  314   e  of the first side wall contacts the top surface  312   a  near the second edge  312   c  of the base. 
     The platform and the support plate straddle between and, once assembled, become attached to the first and second side walls. The platform  360  has a top surface  360   c  with a recess  362  for holding a substrate and stretch release adhesive (not shown). Optionally, the platform includes first and second pairs of pins  363 ,  364  disposed along its side edges  360   d.  Once assembled, these pairs of pins mate with features on the first and second side walls. For example, first set of pins  363  couples with first groove  313   d  on the first side wall and second groove  314   d  on the second side wall, both the grooves being located on the respective back edges of the side walls  313   b  and  314   b.  Second pair of pins  364  couples with first notch  313   c  on the top edge  313   a  of the first side wall  313  and with second notch  314   c  on the top edge  314   a  of the second side wall  314 . With this design, a user can easily interchange platform with different sized recesses. For example, the recess may be configured to receive at least a portion of a liquid crystal display (LCD) display from various mobile hand held devices, such as mobile phones, portable digital music player, personal digital assistant or a portion of an LCD from a laptop computer. The depth of the recesses would be adjusted for the appropriate application. Although the recesses are shown in rectangular shapes, other shaped configurations may be used. In this particular embodiment, the platform also includes a lip  360   a  that lies distal to a back edge  360   b  and proximate to support plate  328 . There is a gap between the lip  360   a  of the platform and the support plate  328  to allow for the carrier tape to be threaded through. 
       FIG. 24  also show the various rollers that lie in the cavity created when the base  312 , first side wall  313 , second side wall  314 , and platform  360  are assembled so as to form the adhesive removal device  310 . In this embodiment, there are five different rollers, a first unwind roller  321 , a second idler roller  322 , a third idler roller  323 , a fourth idler roller  324 , and a fifth take-up roller  325 . Each of the rollers straddle between the first and second side walls, and once assembled, are attached thereto. The second, third and fourth are located nearer to the top surface of the two side walls  313   a,    313   b  while the first and fifth roller are located closer to the base. Thus, using the coordinate system shown in  FIG. 24 , the second, third and fourth rollers lie more positive on the y-axis as compared to the first  321  and fifth roller  325 . Furthermore, the support plate  318  straddles between the third  323  and fourth  324  rollers. 
     The first roller  321  includes two cylindrical sleeves  329  that can vary in height to accommodate different size of carrier tape. For example, cylindrical sleeves for a 1 inch tape would have a larger height than that used for a 2 inch tape. Typically the sleeves are equal in height to allow the carrier tape to be aligned with the centerline of the device. On both side of the first roller  321 , there are mechanical features that facilitate its installation to the first and second side wall  313 ,  314 . For example, the first roller  321  includes a pair of arms, first (not shown) and second  321   a  arm that slideably engages with first slot  313   f  and second slot (not shown). Because the first roller sits in the vicinity of the back edge of the two side walls  313 ,  314 , as shown in  FIG. 2 , the slots begin at the back of the side wall. The first roller  325  also includes an optional knob  320  to allow a user to tighten the first roller in position. As shown in  FIG. 23 , the knob  320  slideably engages with slit  314   g  on the second side wall  314 . 
     The fifth roller  325  includes first and second arms  325   a,    325   b  that couples with first aperture  313   f  on the first side wall  313  and second aperture  314   f  on the second side wall  314 . The crank handle  352  attaches to the second arm  325   b.    
     The device optionally includes a cover  316  having pins located near first and second side edges  316   a  and  316   b  that couple with holes on the top surface  313   a,    314   a  of the first and second side walls. The cover can include a bar  318  that lies nearly on top of the support plate  328  towards the gap  340  once the cover is placed on the side walls. The cover optionally includes a handle  317  to facilitate easy lifting and attaching to the side walls. 
       FIG. 25  shows a side-view of the device with the second side wall removed to better illustrate the relative positions of rollers one through  5  in relation to the support plate  328  and also to illustrate the path of the carrier tape  330 .  FIG. 26  shows a cross-section view of a portion of the device with a stack  21  mounted on the platform  360  with the carrier tape  330  having an adhesive  330   b  coated on a backing  330   a.  As shown in  FIG. 25 , a roll  359  of carrier tape is mounted on the first unwind roller  321 . The carrier tape passes over second roller  322  with the backing  330   a  in contact with a portion of the second roller&#39;s circumference. The carrier tape passes over third roller  323  with the adhesive  330   b  in contact with the circumference of the third roller. Thus, the circumference of the third roller should not adhere to the adhesive. In one embodiment, the circumference of the third roller contains microstructures, such as linear grooves or pyramids. In another embodiment, the circumference of the third roller is coated with a material that does not adhere to the adhesive  330   b  of the carrier tape. The carrier tape then passes over the support plate  328  with the adhesive  330   b  exposed and moves over the fourth roller  324 , again with the adhesive exposed so that the backing  330   a  is in direct contact with the circumference. The carrier tape is then wound up by fifth take-up roller  325 . 
     Now turning to  FIG. 26 , the stack  21  contains two substrates  22  and  24  bonded together by stretch release adhesive  20 . In one embodiment one of the substrate can be glass plate while the other is a LCD module, which may include a respective glass plate, an LCD element (including liquid crystals), and a tough panel. In another embodiment, each of the two substrates can be glass plate or a glass plate and a touch panel display. The stretch release adhesive  20  includes a tab  20   a.  In use, the carrier tape is held in tension over a top surface  328   a  of the support plate  328  between the various rollers.  FIG. 4  only shows third roller  323  and fourth roller  324  for ease of understanding. The tab  20   a  is adhered to the adhesive  330   b  of the carrier tape. If desired, the tab may contain a liner on the exposed side, the side closest to substrate  22 . If desired, a user may use a squeegee to apply a force (shown schematically as arrow A) thereby firmly bonding the tab to the adhesive. The cover (not shown) is placed on the device such that the bar  318  (see  FIG. 24 ) is proximate to and may touch the some part of the tab  20   a.  The user turns the crank handle (not shown) thereby causing the third and fourth rollers  323 ,  324  to move in the direction of indicated by the arrows on the rollers to advance the carrier tape in the direction of arrow B. As the tape carrier moves, it pulls along with it first the tab and then the stretch release adhesive necks down between the two substrates  20 ,  24  until it completely detaches from both. 
     While  FIG. 26  shows the stretch release adhesive  20  to be a single layer, multiple layer adhesive constructions can be used. Illustrative useful stretch release adhesive includes U.S. Pat. No. 5,989,708 (Kreckel), U.S. application Ser. No. 61/020,423 filed Jan. 11, 2008 and No. 61/036,501 filed Mar. 14, 2008, all of which are incorporated by reference in their entirety. 
     The carrier tape can be any tape containing an adhesive that adheres to the tab  20   a.  Illustrate carrier tapes include, e.g., product number  355  and  375 , which are packaging tape that are commercially available from 3M Company, St. Paul, Minn. 
     In one exemplary embodiment, the device has dimensions of  12  inch in length, 6.5 inch in height and 6 inch in width. The platform is generally rectangular in shape having dimensions of 6.125 inch in length and 5 inch in width. Each of the five rollers is cylindrical in shape having a height of about 5 inch. The diameter of each of the roller varies. The surface  328   a  of the support plate  328  ( FIG. 25 ) has dimensions of 1.25 inch in width and a length of 5 inch. The two sidewalls  313 ,  314 , the base  312 , the platform  360 , and the support plate can be made of any durable material, such as metals, plastics, and composites thereof. The optional cover  316  can be constructed from clear plastic allowing the user to see the stretch release that is being removed. 
     Various embodiments of the invention have been described. These and other embodiments are within the scope of the following claims. For example, although many of the figures illustrate adhesive removal devices that hold component  21  such that a major surface of component  21  extends along the x-y plane (orthogonal x-y-z axes are shown, e.g., in  FIG. 1 ), in other embodiments, some of the adhesive removal devices may be modified such that the major surface of component  21  extends along the z-axis direction, as with the embodiments shown in  FIGS. 19A-20B . Such an orientation of component  21  may enable gravity to help stretch adhesive layer  20 .