Abstract:
This invention concentrates on making squeeze-to-open self-closing devices for small hand held plastic bags with or without reclosable closures; having bag openings limited to under 4 inches for possible grasping of opposing ends of the bag opening for squeezing, by the same hand holding said plastic bag; for bags wider than 4 inches cater-cornering the 4 inches and under said plastic bag is possible; when reclosable closures are used they can be made with a tamper evident shipping seal thereby eliminating the need for conventional off-set lip and ridges made for gripping and easier opening, along with the usual single or double track seals at the bag outlet top portion. A small hand held pill box or container is offered for fabrication; using only two separate male and female ribbons extruded from conventional extrusion profiles; cut to predetermined lengths; superimposed and aligned for seal welding respective edges for shaping a cylindrical container bottom for up-right standing.

Description:
CROSS REFERENCE TO THE RELATED APPLICATIONS  
       [0001]    “Self-Closing Valve With Tamper Evident Lip Seal Tab” Ser. No. 07/08/88, U.S. Pat. No. 4,917,267 granted Apr. 17, 1990; Patent application Ser. Nos. 08/288843 filed Aug. 1, 1994 canceled. 
     
    
     
       BACKGROUND OF THE INVENTION  
         [0002]    This is a CONTINUATION IN PART of application Ser. No. 09/010151 filed Jan. 21 1998. The ideas for this new invention were developed from the CIP and experience gained by manufacturing small squeeze-to-open self-closing pill boxes using post-forming per U.S. Pat. No. 4,917,267 granted to the applicant of this new application; research for improving the manufacture of the pill box led to the conclusion that the extrusion process often used to make plastic bags with thin gauge plastic sheets integrally extruded with the “ZIPLOC” or equal, interlocking male and female elements into separately extruded ribbon forms and cut to pre determined lengths for forming plastic bags is possible, which further led to research the problems with opening and closing plastic bags and found quick, easy opening and closing of plastic bag openings with or without reclosable interlocking joints can be accomplished simply by creating a throat portion by the addition of guide mouth attachments at its discharge outlet; when digitally squeezed, as explained later, quickly opens the bag opening and upon release of the squeeze effort automatically self-closes, all done using the same hand that holds the plastic bag, provided bag openings are {fraction (31/2)} inches and under. For larger than {fraction (31/2)} bags, cater-cornering with a {fraction (31/2)} inch slotted outlet can be used, or else use per usual both hands for dispensing.  
           [0003]    The pill box has been sold for several years, for retail to mostly drug stores; to consumers for temporary storage in purses or pockets for dispensing prescription drugs were often reordered proving the pill box outlet with curved quadrant outlet was able to retain its plastic memory and shape after repeated squeeze-to-open self-closing operations, which determined the shape and dimensions for making new guided curved quadrant clamps using the extrusion process.  
           [0004]    Most closures require both hands for twisting, turning, flipping, pushing or pulling, causing difficult dispensing problems, which are minor compared to grasping and manipulating the dispensing from conventional plastic bags having the likes of a “Zip-Loc” or equal reclosable interlocking joint, because the plastic bag sheets are too thin, moist, slippery or held by electrostatic force, and more likely, because of misalignment of ‘Zip-Loc&#39;s or equal, relatively narrow male and female interlocking closure strips which are often fastened to thin side-walls of the bag by heat sealing or integrally formed via extrusion. All these problems can be eliminated by making plastic bags, or flexible containers in either of the following manner, using Low Density Polyethylene, or equal thermoplastic:  
           [0005]    1/ Male and female guided curved quadrant clamp elements extruded integrally with individual plastic bag sheets, cut to desired lengths for superimposing and fission welding seams, forming a plastic bag with an opening under 3 and ½ inches to permit digital squeezing at a point below the mouth or nested portion of the curved quadrant clamps when assembled having no interlocking joint other than a pair of male and female resilient curved quadrant clamps nested together to form a dust tight seal.  
           [0006]    2/ Same as above, but including “ZIP-LOC” or similar reclosable interlocking male and female elements, each embedded via extrusion, within their counterpart male and female curved portions for interlocking when the curved quadrant clamps are nested together.  
           [0007]    3/ Modify the “ZIP-LOC” or equal reclosable interlocking male and female elements by including, during its original extrusion the guided elements, per this patent application.  
           [0008]    4/ Modify standard plastic bags not having a reclosable joint by reinforcing the bag outlet and adding guided throat attachments for digital squeeze-to-open self-closing of the bag outlet. The outlet lips of the curved quadrant clamps can be extruded to include a shipping tab for sealing the dispenser to prevent contamination or removal or insertion of foreign material until the dispenser is used by its end user, said tab being an outer extension, full length of the {fraction (1/32)} inch thick curved female clamp portion shaped to form a resilient snap-in joint which overlaps and temporarily locks the outer full length of the {fraction (1/32)} inch male curved quadrant clamp portion when nested together, and tack welded at its mid point outer lip end-for protection against tampering until broken by the purchaser, upon squeezing its outlet ends. FIG. 7 a shipping seal with thin flat lips capable of being sealed by a simple home owner&#39;s electric heated bag sealer, is a possible alternate. The amount of effort required for squeezing the curved clamps for dispensing, depends upon the following:  
           [0009]    1/ the resiliency and plastic memory of the plastic used,  
           [0010]    2/ the radius and arc length of the elongated curved portions,  
           [0011]    3/ the plastic thickness and length for the aforementioned curved portions,  
           [0012]    4/ the type of closure joint used, and  
           [0013]    5/ the wall thickness and space below the entry at the mouth and throat portion of said mouth for guiding the curved quadrant clamps into a nested closure, but most of all to withstand the tendency of the curved quadrant clamps to bend in unison without opening during the squeeze-to-open operation  
           [0014]    The following is the basis for making plastic bags, from experience with production of the previously patented pill box having a 2 inch wide curved quadrant clamps flat slotted outlet:  
           [0015]    1/ A thermoplastic such as translucent, natural finish Low Density Polyethylene, has been successfully used for the last ten years. Possibly other material can be used having the same or better plastic memory, and flexibility, but all without pigmented fillers because they decrease the resiliency of the plastic, over heating the plastic above its 160 F. softening point will also affect its resiliency and shape, therefore, heed this, particularly when heat welding.  
           [0016]    2/ The radius of the nested curved contact surface being ¼ inch for normal child resistance, and ⅜ inch for effortless squeezing by arthritics.  
           [0017]    3/ The plastic thickness of the male and female curved quadrant clamps each {fraction (1/32)} inch  
           [0018]    4/ All easily opened, and self-closed ,using only one hand except for the embedded interlocking joint which easily opened but needed assistance for interlocking its male and female elements for full occlusion; however, without assistance, the elements were in alignment and touching one another for partial sealing.  
           [0019]    5/ The thickness for each of the extension pieces connected to their related male and female curved quadrant clamps shall be {fraction (1/32)} inch and each jut a distance of ¾ inch therefrom, in an angular fashion the full length of each clamp, symmetrically aligned to the entry at the mouth of the nested clamps for a spacing of ¾ inch between their respective tip end, thus making a bulge, or throat, within the assembled superimposed plastic sheets, which when squeezed, guides the mouth of the nested curved quadrant clamps to open, which upon release of the squeeze effort self-closes, due to its inherent memory acquired from the low density polyethylene plastic.  
           [0020]    Quotes from the ABSTRACTS of a few patents listed below gives credence that guided curved quadrant clamps per this invention will eliminate the problems of opening and closing the likes of “ZIP-LOC” or equal reclosable interlocking joints:  
           [0021]    AUSNIT U.S. Pat. No. 3,565,147 per the ABSTRACT:  
           [0022]    “a pair of stiffener ribs is formed integrally with the bag but of a thermoplastic material more rigid than that from which the bag is formed to provide increased lateral rigidity along the open end of the bag to prevent inadvertent separation of the interlocking elements.” 
           [0023]    SCHEIBNER U.S. Pat. No. 4,363,345 per the ABSTRACT:  
           [0024]    “A reclosable container features ridges near the opening of the container to provide improved gripping of the container by the user during the opening and loading of the container.” 
           [0025]    WILLIAMS U.S. Pat. No. 4,917,321 per the ABSTRACT:  
           [0026]    “An interlockijng closure device whereby the closing and opening of the closure is more easily detected by visual inspection” When required, tighter and more resilient closure seals are included as part of this application as described in the following:  
         SUMMARY OF THE INVENTION  
         [0027]    This invention promotes the use of the extrusion process for making plastic bags; preferably for the smaller {fraction (31/2)} inch and under sizes which can digitally be squeezed open by the same hand holding the bag, and which upon release of the squeeze effort automatically self closes; also for making the guided curved quadrant clamps for opening and closing the plastic bags because it not only eliminates the need for obtaining pre-molded shapes if post-forming were used, but makes it possible to form an assembly of parts in an integrally extruded ribbon form consisting of the following parts for each individual male and female curved quadrant clamp: 1/ the {fraction (1/32)} inch by ¾ inch guide portion extension, adjacent to the curved quadrant clamp throat portion tapered to match the required thickness of the plastic sheet  
           [0028]    2/ the plastic sheet portion extruded to the required thickness  
           [0029]    3/ the resilient shipping lip seal parts  
           [0030]    4/ the reclosable interlocking elements when needed  
           [0031]    5/ the curved male or female clamp  
           [0032]    As previously stated the above parts are integrally extruded to form two separate ribbons, one a male assembly and the other a female assembly, each cut to suit the bag opening length desired, then superimposed for nesting and alignment of the nested curved quadrant clamp ends for fusion welding said ends, and the superimposed plastic sheets along their corresponding edges except at the edge along which is formed the open end of the bag, thus forming a complete plastic bag assembly ready for filling product.  
           [0033]    This invention also promotes the use of a simple reclosable clamping arrangement that does not require a typical interlocking joint, but merely a resilient nesting of the male and female sealing elements, successfully use since 1990 via post-forming, for storing short term products by the consumer. Since extrusion is being used rather than post-forming, more resiliency shall be added to the nested joint, by extruding the inside radius of the concave portion of the female curved quadrant clamp a few thousandths of an inch shorter than the mating outside convex radius of the male curved quadrant clamp to assure full nested contact, this plus bowing the longitudinal edges of the female concave curved portion towards each other forms a positive resilient press fit with its mating male portion when occluded.  
           [0034]    This invention also includes a resilient reclosable joint which can be made during the extrusion of the curved quadrant clamps, consisting of serrated notches full length on each of the {fraction (1/32)} inch thick male and female elongated curved quadrant clamps, said serrated teeth extruded as “V” shaped teeth {fraction (1/64)} inch projections, equally spaced and parallel to the longitudinal axis of the elongated curved quadrant clamps, for alignment and intermeshing when occluded into a water tight joint.  
           [0035]    Using the extrusion system outlined above for making the usual lay-down type plastic bags, can also be used for making small 2 ounce capacity, stand-up type pill boxes for filling prescriptions by drug store pharmacists, but with thicker side walls which in addition to making the container self supporting, protects the stored pills from being crushed due to external forces. The pill box shall be made to generally the same dimensions used for making the previous patented post-formed pill box having a 2 inch wide curved quadrant clamps dispensing outlet, integrally combining via the extrusion process, {fraction (1/32)} inch thick or heavy gauge plastic sheets to each of the male and female elements of the curved quadrant clamps to form a pair of 2 inch wide superimposed sheets, fusion welded together along their corresponding edges, except at edge along which is formed the open outlet end and the bottom of the bag, whereby, said open outlet ends of each superimposed bag sheets are attached full length, to each of the {fraction (1/32)} inch thick cross sectional part of the elongated curved nested male and female clamps, which when so united forms a curved nested mouth, fusion welded at opposite ends for joining and sealing, whereby the bottom superimposed bag sheets are seam welded laterally a distance of ½ inch starting at opposing corners, leaving the remaining 1 inch mid-section open which when laterally pushed symetrically towards the center of the bag causes the bag sheets to bulge outwardly then taper downwardly from opposing sides of the curved nested mouth, and take on a generally cylindrical shape near the unwelded mid-section, which can now be sealed off by pinching shut prior to welding, thus forming a flat bottom having four equal ½ inch long quadrantly spaced seams, capable of supporting the pill box in an up-right position for loading. The thickness of the tapered sides adjacent to the mouth and throat portion must be thick enough to withstand the manual squeeze effort for opening the pill box outlet. Depending upon the production capabilities for welding the {fraction (1/32)} inch sheets, an interim alternate method is to provide a slip-on press fit cap over the cylindrical bottom opening and bonding it thereto, or resort to making an un-welded post-formed pill box per the previous patent mentioned herein.  
           [0036]    The conventional practice of thermal cutting the extruded {fraction (1/32)} inch thick ribbons can be modified for compressing and preheating both sides of the cutting edge tool for thinning the plastic sheet edges at the softening point of 160 F. for improved welding. All materials should be low density polyethylene, or equal and amber colored for U V resistance. For use as an over-the-counter application the outlet lips can be provided with shipping seals. The advantage of using the above pill box are as follows:  
           [0037]    1/ Easy to open, no need for twisting, or pulling hard to open child resistant caps  
           [0038]    2/ Always closed until opened by druggist or consumer, never exposed to entry of foreign substance from factory to druggist or consumer, spill proof, no need for caps, which can be loosely applied, or forgotten to be applied, negating the child resistant concept, and use the storage space for caps for other purposes  
           [0039]    3/ Increasing the inside radius of the nested curved quadrant clamps makes for an effortless squeeze by arthritics for opening the pill box. Ideal for packaging over-the-counter prescriptions for arthritics  
           [0040]    4/ The consumer gains the advantage of storing the pill box in a purse or pocket for quick access to the medication which when expended can use the container for other multi purpose uses.  
           [0041]    5/ Can be provided with thin lip shipping seal for sealing by the pharmacist using a simple electric heated bag sealer. 
       
    
    
     BRIEF DESCRIPTION OF THE DRAWINGS  
       [0042]    [0042]FIG. 1 is a split view elevation of the top portion of a conventional plastic bag with sections “A-A” and “B-B” showing details for mounting throat guide mouth attachments, in and out of the bag.  
         [0043]    [0043]FIG. 1A is a top split view of FIG. 1 showing weld locations for throat guide mouth attachments.  
         [0044]    [0044]FIG. 2 is a cross sectional view of the plastic bag assembly made from the extrusion of two separate thermoplastic male and female ribbons each with the following individual counterparts, curved quadrant clamp with snap-in lip tip, heavy gauge throat guide mouth attachment, and thin gauge plastic bag sheet to form a squeeze-to-open self-closing nested curved quadrant clamps assembly in its occluded position.  
         [0045]    [0045]FIG. 2A is a side view of FIG. 2. It shows ARROWS to indicate discharge of contents by application of digital force.  
         [0046]    [0046]FIG. 2B is a top view of FIG. 2.  
         [0047]    [0047]FIG. 3 is a cross sectional view of separate male and female extruded ribbons showing a reclosable interlocking joint.  
         [0048]    [0048]FIG. 3A is a cross sectional view of separate male and female extruded ribbons showing reclosable key shaped slotted joint.  
         [0049]    [0049]FIG. 4 is a blow up of a partial cross sectional view of the plastic bag sheet bonded to extruded modified elements of a conventional reclosable “ZIP-LOC” or equal male and female interlocking joint shown in phantom, with modifications being the thick guide bar attachments, solidly shown by cross-hatching, for guiding the interlocking elements during the squeeze-to-open and self closing operations.  
         [0050]    [0050]FIG. 5 is a blow up of a partial cross sectional view of a reclosable intenneshed closure joint consisting of male and female curved quadrant clamps extruded ribbons each having resilient “V” shaped serrated teeth intermeshed with one another when nested and occluded.  
         [0051]    [0051]FIG. 6 is a cross sectional view of pill box made via the extrusion of two separate heavy gauge ribbons showing nested curved quadrant clamps in its occluded position with snap-in shipping seal at its outlet lips.  
         [0052]    [0052]FIG. 6A is a side view of FIG. 6. It shows the elongated slotted outlet of the curved quadrant clamps for discharge of contents.  
         [0053]    [0053]FIG. 6B is the bottom view of FIG. 6 and FIG. 6A showing the quadrantly spaced welded pleated seams made by folding the lower portions of the superimposed plastic sheets.  
         [0054]    [0054]FIG. 6C is a top view of FIG. 6.  
         [0055]    [0055]FIG. 6D is a partial cross sectional view of the bottom of the container using a press fit slip-on cap in lieu of the welded quadrantly spaced welded pleated seams shown in FIGS. 6, 6A and  6 B.  
         [0056]    [0056]FIG. 7 is a blow up cross sectional view of a thin lip shipping seal.  
         [0057]    [0057]FIG. 8 is a cross sectional view showing the curved clamps with shorter arc length than that of the full 90 degree curved quadrant.  
         [0058]    [0058]FIG. 9A shows plastic bag ready to be manually opened.  
         [0059]    [0059]FIG. 9B shows plastic bag open when manually squeezed. 
     
    
     DESCRIPTION OF THE PREFERRED EMBODIMENTS  
       [0060]    The following embodiments describe novel ways to use flexible resilient Low Density Polyethylene plastic for making easy to open self-closing devices for plastic bags and containers, tighter, more resilient seal closures, and revised extrusions of conventional interlocking joints the likes of “ZIPLOC” or equal, for making them capable of being squeezed-to-open and self-closing as discussed below and illustrated in non-scale blow-up views for better definition.  
         [0061]    [0061]FIG. 1 is a split elevation of the top portion of a preformed conventional plastic bag  10  with standard reclosable closure  9  having a bag opening under 4 inches in length; aided for opening and closing by the addition of throat guide mouth attachments  17  and  18  when fusion welded  7  at their opposing outer edges with plastic bag  10  sheets  19  and  20  causes said bag to taper  22 ′ downwardly from top bag discharge opening; forms a throat  8  at mouth entry  16  at closure  9  which when digitally squeezed at its lengthwise opposing ends opens closure  9 ; upon release of squeeze effort automatically guides the closure elements  9  to reseat at mouth  16 ; the right hand half of the split elevation shows throat guide mouth attachments  17  and  18  fastened to the outside of plastic bag  10 ; whereas the left hand half elevation shows said attachments fastened on the inside of said plastic bag  10 ; section “A-A” shows bulge  8 ; mouth  16  and the addition of short elongated portions  17 ′ and  18 ′ to attachments  17  and  18  to facilitate alignment for fusion weld  7  at opposing elongated ends; section “B-B” shows throat guide mouth attachments  17  and  18  on the inside portion of plastic bag  10  and juncture at mouth  16 .  
         [0062]    [0062]FIG. 1A is a split view of the top portion of plastic bag  10  of FIG. 1; showing in the right hand half of of the view mounting of throat guide mouth attachments  17  and  18  on the outer walls of plastic bag sheets  19  and  20  and the location of weld  7  for bonding said  17  and  18  attachments to said plastic sheets  19  and  20 ; in the left hand half of the view the mounting of throat guide mouth attachments  17  and  18  are on the inside walls of plastic bag sheets  19  and  20  and the location of of weld  7  for bonding said  17  and  18  attachments to said plastic sheets  19  and  20 ; both views show the outward bulging of said plastic bag sheets  19  and  20  caused by adding throat guide mouth attachments  17  and  18  to a preformed plastic bag  10 .  
         [0063]    [0063]FIG. 2 is a cross sectional view of the plastic bag  10  assembly consisting of two separate plastic extruded ribbons, the male portion consisting of snap-in shipping lip seal end  15 , male curved quadrant clamp  12 , male throat guide mouth attachment  17 ; thin gauge as desired plastic sheet  19  for assembly as shown with the following female extruded counterpart portions, female snap-in shipping lip seal  14 , female curved quadrant clamp  11 , female throat guide mouth attachment  18 , and thin gauge as desired plastic sheet  20 , each ribbon cut to suit the bag opening length desired, then superimposed for nesting and alignment of the curved quadrant clamps  11  and  12  fusion welded at their nested ends  13 , and fusion welding the flat superimposed plastic sheets along their corresponding edges  22  as shown in FIG. 2A the side view of FIG. 2 which also shows the elongated slotted outlet of the curved quadrant clamps  11  and  12  for discharge of contents by application of digital force as shown by the ARROWS for opening the outlet.  
         [0064]    [0064]FIG. 2B is a top view of FIG. 2 which pin-points the bulge  8  at the throat section of the plastic bag  10  which occurs after the seam welding at the outer edges  20  of the superimposed flat plastic sheets; said thickened throat guide mouth attachments  17  and  18  when appropriately squeezed, as defined herein, guides the mouth of the nested curved quadrant clamps  11  and  12  to open, which upon release of the squeeze effort self closes, due to the additional plastic thickness of throat guide mouth attachments  17  and  18  gained by its use rather than thin gauge plastic sheets  19  and  20  normally used in plastic bags, thereby benefiting from the additional inherent plastic memory of low density polyethylene to retain its original flexible shape, which furthermore, said throat guide mouth attachments  17  and  18  withstand the tendency of the curved quadrant clamps  11  and  12  to bend in unison without opening during the squeeze to open operation.  
         [0065]    [0065]FIG. 3 is a blow-up cross sectional view of a simple resilient plastic interlocking joint with its knobby shaped male element  23  attached to and extending above the convex portion of the curved quadrant clamp  12  and nested within its keyhole shaped female counterpart  24  imbedded within the concave portion of the female curved quadrant clamp  11  when in its occluded position showing the throat guide mouth attachments  17  and  18  each extending from each of the nested curved quadrant clamps  11  and  12  at its nested mouth portion to form the required throat portion  8  for guiding the opening and closing of the nested joint during the squeeze-to-open self-closing operations, said throat guide mouth attachments  17  and  18  being {fraction (1/32)} inch thick same as the thickness of the curved quadrant clamps  11  and  12 , taper towards thin gauge plastic sheets  19  and  20  (thickness to suit the product being stored usually less than 8 mil of an inch), the occluded joint shows a snap-in shipping seal  14  with tack weld  21  imbedded at the outer lip portion of the male curved quadrant clamp  12  locks the dispenser to prevent contamination or removal or insertion of foreign material until said tack weld  21  is severed by its end user, the consumer, as per previous instructions. The above Figured Numbered parts are to be individually grouped for making two separate male and female extruded plastic ribbons, each cut to the desired bag opening size for a nested assembly in the similar manner described for FIG. 2.  
         [0066]    [0066]FIG. 3A is the same as blow-up view for FIG. 3 with the exception that instead of knobby shaped male element  23  a conventional “ZIPLOC” or equal interlocking male element  5  is used, to mate with its female counterpart  6  instead of the keyhole element  24  shown in FIG. 3.  
         [0067]    [0067]FIG. 4 is a blow up view of a conventional “ZIPLOC” or equal reclosable interlocking joint shown in phantom lines, fastened to thin gauge plastic sheets  34  and  32  of a standard plastic bag, with both standard joint elements modified, during their original male and female ribbon forming extrusions, as follows: to male joint element  27  a closure guide jut attachment  29  is added, and to female joint element  28  a closure guide jut attachment  30  is added Depending upon the plastic bag manufacturer, plastic sheets  31  and  32  may be integrally extruded with individual joint elements  27  and  28 , or else bond them together, for making a complete plastic bag assembly capable of being easily and quickly opened. Using only one hand for bag openings {fraction (31/2)} inches and under.  
         [0068]    [0068]FIG. 5 is a blow up of a partial cross sectional view of a resilient reclosable joint which can be made during the extrusion of the individual curved quadrant clamps, consisting of serrated notches running full length on each of the {fraction (1/32)} inch thick male  11  and female  12  elongated curved quadrant clamps each with saw like teeth  25  and  26  extruded as “V” shaped teeth with {fraction (1/64)} inch projections atop the {fraction (1/32)} inch aforementioned thickness, equally spaced and parallel to the longitudinal axis of the elongated quadrant shaped curved clamps  11  and  12  to form a resilient intermeshing of teeth when nested in its occluded position ready for unlocking the shipping seal  14  by the user when tack  21  is severed from outlet lip end of clamp  12  during the initial squeeze-to-open operation.  
         [0069]    [0069]FIG. 6 is a cross sectional view of a pill box made by the extrusion of two separate male and female heavy gauge plastic extruded ribbons, the male portion consisting of a snap-in shipping lip seal end  15 , and {fraction (1/32)} inch thick male curved quadrant clamp  12 , and heavy gauge {fraction (1/32)} inch thick plastic sheet  19  the same thickness as the curved quadrant clamp  12 , thus not needing a guided attachment for assembly, as shown by the following female extruded plastic ribbon counterpart portion consisting of, female snap-in shipping lip seal  14 , and {fraction (1/32)} inch thick female curved quadrant clamp  11 , and heavy gauge {fraction (1/32)} inch thick plastic sheet  20  the same thickness as the curved quadrant clamp  11 , without need for a guided attachment, each ribbon cut 2 inches long, then superimposed for nesting and alignment of the curved quadrant clamps  11  and  12 , fusion welded at their opposing ends at  13 , and alignment of the 2 inch long plastic sheets  19  and  20 , fusion welded along edges  34  and  35 , except at the edge which forms the open curved quadrant clamps and the bottom of the bag; said open bottom outlet ends of each superimposed bag sheets are aligned and fusion welded at opposite edges  34  and  35  for sealing; bottom superimposed bag sheets are seam welded laterally a distance of ½ inch starting at opposing corners, leaving the remaining 1 inch mid-section open causing bag sheets to bulge outwardly and taper downwardly per FIG. 6A from opposing ends  13  of the curved quadrant clamps and take on a generally cylindrical shape at the unwelded 1 inch mid section previously mentioned; pinched shut and fusion welded  34  and  36  forming a flat bottom per FIG. 6B.  
         [0070]    [0070]FIG. 6A is a side view of FIG. 6 showing the curved quadrant clamps seal welded at their extremities  13 ; covered and locked by shipping lip seal  14 ; bottom folded edges  36  and  37 ; mid point location for tack weld  21  for locking the closure in until severed at the initial squeeze-to-open operation by the purchaser.  
         [0071]    [0071]FIG. 6B is the bottom view of FIG. 6 showing the ½ inch long quadrantal spaced seams  34 ,  35 ,  36  and  37 .  
         [0072]    [0072]FIG. 6C is a top view of FIG. 6 showing the bulged portion  8  of the generally cylindrical bottom.  
         [0073]    [0073]FIG. 6D is partial cross sectional view of an alternate method for sealing the bottom outlet by bonding a standard tubing cap  33 .  
         [0074]    [0074]FIG. 7 is a cross sectional blow up view of an alternate tamper evident shipping seal for plastic bags and containers, showing male  12  and female  11  curved quadrant clamps nested outlets, each tapering down  39  and  40  to separate thin gauge plastic strips  41  and  42  extending outwardly and running full length of the male  12  and female  11  elongated curved outlets, said thin gauge plastic strips  41  and  42  in contact with one another ready for fusion welding, after product filling of the plastic bag or container; said sealed shipping seal easily broken open by the purchaser by applying sufficient digital force at the throat portion  8  and lengthwise opposing ends  17  and  18  guided throat attachments.  
         [0075]    [0075]FIG. 8 is a cross sectional view of plastic bag  10  with guide attachments  17  and  18  forming the throat portion  8  tapering inwardly towards the curved clamps  11  and  12 ; apparatus FIG. 8 differs in that the curved outlet portion  44  has a shorter arc length than the nested  12  and  11  curved 90 degree quadrant of FIG. 7 and that it requires lip reinforcing  43  to attain the same plastic memory and resiliency.  
         [0076]    [0076]FIG. 9A is a perspective view of the upper portion of plastic bag  10  showing top portion of dispenser outlet female curved quadrant clamp  11 ; female portion of snap-in shipping seal  14 ; opposing bonded ends  13  ( for nested curved quadrant clamps  11  and  12  as shown below in FIG. 9B) and tack weld  21  at mid point of shipping seal  14 ; said plastic bag  10  hand held by  2 , with thumb  3  and index finger  4  ready to apply necessary force, at a point adjacent to but below nested curved quadrant clamps&#39; bonded ends  13 , in order to squeeze open said plastic bag  10  after tack weld  21  has been severed from outer lip portion  15  of male curved quadrant clamp  12  during the consumer&#39;s initial squeeze-to-open operation.  
         [0077]    [0077]FIG. 9B is same perspective shown in FIG. 9A but, with top portion of plastic bag  10  in its open position with thumb  3  and index finger  4  applying the necessary squeeze effort.