Method for preparing a panel with a resinous frame

Abstract: A shaped product (16) for a frame which is extruded from a shaping die (14) in a predetermined shape is pulled by a pulling device (18) toward a pressing member (20) to be passed through the pressing member (20). A panel (22) which is held by an operating robot (24) has a peripheral portion inserted into an inserting portion in the pressing member (20). The panel (22) is moved so as to relatively move the pressing member (20) with respect to the panel (22) and along the peripheral portion thereof. The shaped product (16) is passed through a hollow portion in the pressing member (20) to be unified to the panel (22), thereby obtaining the panel with the frame wherein the frame has good appearance and the outer size of the panel with the frame is accurate.

Description: The present invention relates to a method for preparing a panel with a resinous frame according to the precharacterising part of claim 1. Such a panel with a resinous frame is suitable as a windowpane for vehicles and buildings. A method of this type is known from e.g. JP-A-57-158 479. A windowpane for vehicles and buildings has usually had a resinous frame such as a molded member or a gasket of synthetic resin attached in a space between a panel such as a glass sheet or plastic sheet and an opening with the panel fitted therein, thereby improving ornamentality and sealing feature. Attachment of such a resinous frame has been carried out by fitting a preshaped frame into a peripheral portion of a panel interposing an adhesive agent therebetween. However, such attachment has created problems in that it is difficult to automate operations because of need for human hands in most of the operations, and that presence of a lot of operation steps requires a substantial cost. In order to solve those problems, there has been proposed a so-called encapsulation method wherein a synthetic resin or its raw material is injected into a mold cavity with a panel arranged therein to form a resinous frame at a peripheral portion of the panel in a one-piece construction (see JP-A-57158481 and JP-A-5873681). The encapsulation method has advantages of minimizing labor on shaping and of giving a high degree of dimensional accuracy to a product because the panel is sandwiched between stiff mold halves made of metal and so on, the synthetic resinous material or its raw material is injected into the cavity defined by the peripheral portion of the panel and an inner surface of the mold. On the other hand, the method creates a problem wherein when the panel is a glass sheet, the glass sheet is very fragile on clamping because of in particular a warp or insufficient bending working accuracy thereof. In order to prevent the glass sheet from being broken on clamping, there has been proposed a mold which is contrived to arrange elastic members on surfaces of the mold halves which the glass sheet contacts with, or to use means such as springs to press the glass sheet at a constant pressure, and which can not completely solve the problem of breakage in the glass sheet. In U.S.P. 5,057,265 and EP 0 568 014, there are proposed methods wherein a resinous material is extruded from a die in a predetermined shape along a peripheral portion of a glass sheet to form a shaped product for a resinous frame at the peripheral portion of the glass sheet, and the shaped product for the resinous frame is set to unify the glass sheet and the resinous frame. In the method disclosed in the U.S. patent, because the resinous material is extruded directly onto the glass sheet, vibration due to driving the die is transmitted to the shaped product on shaping to be reflected on a surface of the frame to be shaped, giving poor appearance to the frame. In JP-A-57158479, there is disclosed a method wherein a pressing jig which is constituted by rollers and so on makes a resinous frame fit on a peripheral portion of a panel and presses it against the panel just after the resinous frame has been extruded. This method can prevent vibration due to driving an extruder or a glass sheet from being reflected on a surface of the panel, hardly being susceptible to poor appearance in comparison with the method disclosed in U.S.P, 5,057,265. However, the peripheral size of a finished glass sheet with a frame which is prepared in accordance with the method described in JP-A-57158479 is obliged to comply with the outer size of the glass sheet because the frame is pressed against the glass sheet by the pressing jig such as rollers. Most glass sheet for a vehicle are usually subjected to a bending process, the glass sheet are subject to deviations in the peripheral size on bending. The encapsulation method can shape the resin frame so as to absorb variations in the peripheral size while the method according to JP-A-57158479 is difficult to absorb those variations for the reason stated above. Furthermore, the method of JP-A-57158479 requires that the frame have solidified to a certain extent before being fitted on the glass sheet because the pressing is carried out by the rollers. However, it is necessary to interpose an adhesive agent between the frame and the glass sheet or add a post-heating process because the bonding force between the frame and the glass sheet becomes weak when the frame has solidified to a certain extent. US 3,239,402 discloses a method for applying a thermoplastic ribbon to at least one marginal edge of a continuous moving strip like a blank. The thermoplastic ribbon is extruded and then applied to the edge of the moving strip by a blower system. This method does not use any pressing member having a predetermined shape to press a resinous material onto a panel so that this method can only be used for the application of flat ribbons. It is not possible to produce a frame having a profiled cross section as used in combination with panels like car windows. Such frames require a predetermined cross section so that the window can be exactly fitted into a corresponding window opening of the car. It is the object of the invention to provide an improved method for preparing a panel with a resinous frame pressed onto the panel which ensures a higher bonding force between the frame and the panel. This object is fulfilled by a method having the features disclosed in claim 1. Preferred embodiments are defined in the dependent subclaims. A method for preparing a panel with a resinous frame wherein the resinous frame is unified to at least one surface of the panel at a peripheral portion thereof, comprises extruding a resinous material for the frame in a predetermined shape from a resin shaping die to form a shaped product, and unifying the shaped product to at least one surface of a panel at a peripheral portion thereof; wherein a pressing member is arranged at a position apart from the shaping die at a predetermined distance, the pressing member having a hollow portion formed therein to substantially conform to an outer shape of the frame in section; the shaped product extruded from the die is advanced through the hollow portion; the peripheral portion of the panel is inserted into a panel inserting portion of the pressing member to arrange the pressing member at the peripheral portion of the panel; and the shaped product is unified to the peripheral portion of the panel by pressing the shaped product against the panel while relatively moving the pressing member with respect to the panel and along the peripheral portion thereof. In the drawings: Figure 1 is a schematic perspective view of an embodiment of a method for preparing a panel with a resinous frame according to the present invention; Figure 2 is a schematic sectional view explaining an example of a primer treatment according to the present invention; Figure 3 is a schematic perspective view of an example showing how members are inserted one another at a pressing member and its vicinities in accordance with an example of the present invention. Figures 4(a) and (b) are a schematic vertical sectional view of the example showing how the pressing member has the elements inserted therein according to the present invention, and a sectional view taken along line A-A of Figure 4(a); Figures 5(a)-(c) are schematic perspective views showing an example of a process for preparing a panel with a frame according to the present invention; and Figure 6 is a schematic perspective view showing another example of the process according to the present invention. Now, the present invention will be described in detail with reference to the accompanying drawings. In Figure 1, there is shown a schematic perspective view showing an embodiment of the method for preparing a panel 22 with a resinous frame 17 according to the present invention. A shaping die 14 which is attached to the leading edge of an extruder 12 extrudes a resinous material for a frame to form a shaped product 16 for the frame 17 in a predetermined shape. The shaped product 16 is pulled by a pulling device, and the shaped product 16 is located in a pressing member 20 to pass through a hollow portion 21 in the pressing member 20. A panel 22 is sucked and held by an operating robot 24. By activating the operating robot 24, the panel 22 has a peripheral portion put into an inserting portion 15 of the pressing member 20, and the panel 22 is moved so that the pressing member 20 relatively moves with respect to the panel 22 and along the peripheral portion thereof. By this arrangement, the shaped product 16 passes through the hollow portion 21 in the pressing member 20 to be unified to the panel 22. If the shaped product 16 has not solidified in a sufficient manner when the shaped product 16 is passing through the hollow portion 21 in the pressing member 20, there is a possibility that poor appearance is given to a surface of the shaped product 16 (i.e. a contact portion with an inner wall of the pressing member) by the pressing member 20. In order to cope with this problem, it is necessary that the shaped product 16 has had an outermost portion solidified to a certain extent on arrival at the pressing member 20 so as to avoid surface irregularities or deformation in shape. It is preferable to adjust the distance between the shaping die and the pressing member or another factor depending on the temperature, the viscosity or the like in the extruded material for the purpose. If a connection portion of the shaped product with the panel has solidified, the bonding force between the shaped product and the panel becomes insufficient. For these reasons, it is necessary that only the outermost portion of the shaped product has solidified, but that the connection portion of the shaped product with the panel has not solidified. Therefore, the outermost portion of the shaped product which has been extruded is quenched before the shaped product reaches the pressing member (not shown in Fig. 1). In detail, when the resinous material is of a thermoplastic resinous material, it is possible to solidify only the outermost portion of the shaped product by blowing cooled air on the surface of the shaped product or spraying a liquid. Among these measures, it is preferable to spray liquid nitrogen or the like from the viewpoint that the outermost portion of the shaped product can be cooled in a short period of time. On the other hand, it is acceptable to blow ordinary air in place of liquid nitrogen, which can simplify a required device and minimize the cost. These blowing means (see a member 44 in Figure 5) may be arranged between the shaping die 14 and the pressing member 20 or at an inlet of the pressing member 20 as long as the surface of the shaped product 16 can be cooled to the extent that the pressing member does not make the appearance of the shaped product 16 poor. The temperature of such a cooling fluid blown on the shaped product 16 ranges from about -10°C to about 80°C. By cooling the surface of the shaped product 16 to a temperature which is lower than the temperature of the connection portion of the shaped product 16 with the panel 22, it is possible to obtain the bonding force between the shaped product 16 and the panel 22 in a sufficient manner without degrading the appearance of a finished frame 17. When a thermoplastic resin, in particular a polyvinyl chloride resin is used as the resin material for the frame 17 as stated later, the temperature of the material on extrusion ranges from about 150°C to about 190°C. It is possible to prepare the panel 22 with the frame 17 at good producibility by cooling the surface of the shaped product 16 from a temperature in such range to not higher than 150°C, in particular not higher than 130°C. Furthermore, it is preferable that the shaped product 16 is quenched just after the shaped product 16 has been unified to the panel 22 (see a member 40 in Figure 5). This is because the shaped product 16 may be deformed due to thermal shrinkage if the shaped product 16 is cooled only by self-cooling. Specifically, when the frame 17 has a lip (17C in the drawings), remarkable deformation is likely to appear at the lip 17C so that the lip 17C becomes thin or bends up. Such deformation can be avoided by forcibly cooling and solidifying the shaped product 16 before the deformation occurs. In particular, such remarkable deformation is likely to appear at a portion (17A) where the shaped product 16 is unified to a corner of the panel 22. In order to cope with this problem, the embodiment has such an arrangement that when the panel corner arrives at cooling air blowing means 40, cooling air 41 is blown on the corner. In order to further improve the bonding force between the frame 17 and the panel 22, it is preferable to apply primer treatment to the peripheral portion of the panel 22 before unify the shaped product 16 and the panel 22. In Figure 2, there is shown a schematic sectional view showing an example of the primer treatment. In the example shown, a primer applying jig 26 which includes a pair of rollers 30 are arranged at a suitable position upstream of the pressing member 20 with respect to the relative moving direction of the panel 22 to the pressing member 20. In this manner, primer can be applied to the peripheral portion of the panel 22 to be unified with the frame, moving the panel 22. In Figure 2, an arrow indicates the direction of the relative movement of the panel 22 with respect to the pressing member 20. In Figure 3, there is shown a schematic perspective view showing how the members are inserted one another at the pressing member 20 and its vicinities in accordance with an example of the present invention. In Figures 4(a) and (b), there are shown a schematic vertical sectional view showing how the members are inserted one another at the pressing member 20 and its vicinities in accordance with the example, and a sectional view along line A-A. The hollow portion 21 in the pressing member 20 has a cross section substantially conformed to an outer shape of the frame 17 in section at the advancing side of the shaped product 16 (at a downstream side 21B in the relative movement of the pressing member with respect to the panel). When the shaped product 16 is passing through the hollow portion 21, the shaped product 16 moves through the hollow portion 21 so as to contact with the inner wall of the pressing member 20. An inlet 21A of the pressing member which is located at the opposite side in the advancing direction may be formed so as to have a larger cross section than the outer shape of the frame 17 in section. The relative movement of the pressing member 20 and the panel 22 allow the frame 17 to be unified to the entire circumference or a part of the peripheral portion of the panel 22 which is inserted into the inserting portion 15 of the pressing member 20. In the embodiment, the extruded shaped product 16 has such a cross-sectional shape that the shaped product has a biting portion 32 to the panel 22 (the connection portion with the panel) tapered toward an opening. When the frame 17 is unified onto both surfaces of the panel 22 like the embodiment, it is recommendable that the extruded shaped product 16 has such a cross-sectional shape because the panel 22 and the shaped product 16 can be firmly bonded. In this case, a pair of slit plates 34, 34 which can expand the opening of the biting portion 32 may be provided at the upstream side of the pressing member 20 with respect to the relative movement of the pressing member 20 to the panel 22 to make the shaped product 16 smoothly bite the panel 22. The slit plates 34 and 34 may be heated to intensively heat the biting portion 32 of the shaped product 16. In this case, the slit plates 34 have a heating element and so on arranged therein to heat the slit plates 34. It is preferable that the temperature of the slit plates 34 is set to range from about 100°C to about 150°C. Such an arrangement can further improve the bonding force between the shaped product 16 and the panel 22. With respect to the relative movement of the pressing member 20 and the panel 22, the relative movement can be realized under accurate point to point control by having taught the required movement to an operating robot 24 so that the pressing member 20 relatively moves with respect to the panel 22 and along the peripheral portion thereof. The slit plates 34 may be arranged in the pressing member 20. In such a case, the panel 22 is bitten into the shaped product 16 in the pressing member 20 to be unified with the shaped product 16. When the panel 22 is used for a vehicle window, the panel 22 with the frame 17 is fitted into a window opening of the vehicle. The state in which the panel 22 with the frame 17 is fitted into the window opening depends on the peripheral (lip) position of a frame portion of the panel 22 with the frame 17. It means that when the biting portion of the frame 17 into which the panel extends to an end surface of the panel 22, the peripheral position of the frame portion of the panel 22 with the frame 17 varies on the outer size of the panel 22. If the outer size of the panel 22 involves an error with respect to a preset size, the state in which the panel 22 with the frame 17 is fitted into the window opening might be unacceptable. An error in the outer size of the panel 22 itself can be absorbed by having taught movement of the panel 22 to the operating robot 24 so that a space 36 is formed between the bottom of the biting portion 32 with the panel 22 bit in the shaped product 16 and an end surface of the panel 22 preset to have a predetermined size, as shown in Figure 4(b). If the outer size of the panel 22 is larger than the predetermined size (designed size), the space 36 becomes smaller or disappears. In the reverse case, only an increase in the space 36 occurs, and the panel 22 with the frame 17 has the outer size itself taken such a predetermined size to be fit in the window opening in a good manner at any time. This solution is effective in particular to mass-produce panels 22 with a frame 17. This solution will be further described in detail. If the conventionally shaped frame is pressed against the panel by e.g. rollers, the outer size of the panel with the frame is obliged to completely follow the outer size of the panel itself. This means that if the panel has an error in its outer size, the error is reflected in the outer size of the panel with the frame. In accordance with the present invention, the operating robot 24 (control means therefor) is made to memorize designed size of the panel 22 in advance and to grasp a planned position of the peripheral portion of the panel 22 based on the designed size. The peripheral portion of the panel 22 is relatively moved with respect to the pressing member 20 so that the planned position of the peripheral portion of the panel 22 constantly moves at the predetermined position with respect to the pressing member 20. In this manner, the outer size of panels 22 which have had a frame 17 unified thereto can be constantly kept constant even if the extent to which the frames 17 bite the panels 22 varies according to the respective panels 22. Furthermore, in accordance with the present invention, it is,easy to modify the relative movement of the panel 22 and the pressing member 20 because the relative movement is controlled by the operating robot 24. In detail, an error is sometimes caused between a planned size of the window opening of a vehicle and the actual size of a produced window opening. Such easy modification in the relative movement means that the present invention offers an advantage in that if such an error is caused, the state in which the panel 22 with the frame 17 is fitted into the window opening can be made fine only by modifying the control for the operating robot 24 according to the error. The control of the relative movement according to the present invention can adjust the outer size of the panel 22 with the frame 17 to improve the state with the panel 22 fitted in the window opening even after mass production of vehicles has started. Now, an example of the production process for a panel 22 with a frame 17 in accordance with the present invention will be described with reference to Figures 5(a)-(c). First, a resinous material for the frame is extruded from the shaping die 14 mounted to the leading edge of the extruder 12. The shaped product 16 for the frame 17 thus extruded in a predetermined shape is held by a chuck 19 of the pulling device 18. The shaped product 16 is made to advance toward the hollow portion 21 in the pressing member 20, the shaped product 16 has the outermost portion solidified by blowing cooling air onto the shaped product 16 from the blowing means 44, and the shaped product 16 is introduced into the hollow portion 21 (see Figure 5(a)). At that time, the operating robot 24 is holding the panel 22 at a stand-by position (not shown). Next, the operating robot 24 is activated to move the panel 22 so that the panel 22 has the peripheral portion inserted into the panel inserting portion 15 of the pressing member 20 (see Figure 5(b)). It is preferable that an excess portion of the extruded shaped product 16 is cut off by a cutter 46 at that time. The shaped product 16 is pulled by the pulling device 18 before the shaped product 16 is made to bite the panel 22. The shaped product 16 is unified to the peripheral portion of the panel 22 by moving the panel 22 so that the pressing member 20 relatively moves with respect to the panel 22 and along the peripheral portion thereof. Finally, the shaped product 16 is cut off by the cutter 46 to separate the unified portion of the shaped product 16 from a portion of the shaped product 16 extending from the shaping die 14 (see Figure 5(c)). In that manner, the frame 17 can be unified to the peripheral portion of the panel 22. Furthermore, the remaining shaped product 16 can be advanced by the pulling device 18 to move onto a process to unify a frame 17 to the next panel 22. The present invention is not limited to the example just above mentioned. For example, a guide member may be arranged between the shaping die 14 and the pressing member 20 as an alternative to the pulling device 18. In this case, the shaped product 16 can advance along the guide member to smoothly introduce the shaped product 16 into the hollow portion 21 in the pressing member 20. However, use of pulling device 18 is recommendable, taking into account that use of the pulling device 18 can cope with various conditions such as a case wherein a certain distance must be ensured between the shaping die 14 and the pressing member 20 to adjust a temperature on the surface of the shaped product 16. It is also preferable that a pulling device 18' which is constructed as shown in Figure 6 is used as an alternative to the pulling device 18 stated earlier. Specifically, the pulley device 18' with rollers as shown is arranged at the side of the pressing member 20 opposite to the shaping die 14. A cutter 46' can be provided after the pulling device 18' to eliminate the need for provision of a rail above the producing apparatus unlike the case shown in Figure 5, making the entire apparatus compact. When the panel 22 has had the peripheral portion bitten into the shaped product 16, it is not necessary to pull the shaped product 16 by the pulling device 18 because the relative movement of the panel 22 with respect to the pressing member 20 allows the shaped product 16 to move along with the panel 22. In such a case, at least one of the upper and lower rollers shown in Figure 6 may be separated from the shaped product 16 when the panel 22 is bitten into the shaped product 16. Although in ,the example just above mentioned the panel 22 is moved to obtain the relative movement of the pressing member 20 with respect to the peripheral portion of the panel 22, the pressing member 20 itself may be moved, or the movement of the panel 22 and the pressing member 20 may be controlled to obtain the relative movement. It is enough that the panel 22 and the pressing member 20 carry out the relative movement along the peripheral portion of the panel 22. Since moving the pressing member 20 requires to move the shaping die 14 or the pulling device 18 as well, moving only the panel 22 is preferable. The speed at which the panel 22 and the pressing member 20 relatively move has no limitation. The speed may be constant, or the speed may be increased or decreased at e.g. a corner of the panel 22. In the case wherein the speed is increased or decreased, the throughput of the resinous material may be changed according to the change of the speed. The error with respect to the predetermined size of the panel 22 has been already discussed. The error was related to the outer size. If the panel 22 is formed in a bending shape, an error in curvature as well as the error in outer shape would possibly occur. The error in curvature can be dealt with by e.g. the following measures: the panel 22 has an upper portion moved with respect to the pressing member 20 in advance so that the panel 22 has an upper surface pressed against an upper surface of the inserting portion 21 in the pressing member 20 to a certain extent. Even if the panel 22 has an error in curvature, the measures can absorb the error in curvature by making the upper surface of the panel 22 relatively move so as to constantly contact with the upper surface of the inserting portion 21 in the pressing member 20. In the measures, it is preferable that fluorocarbon resin coating is applied to the contacting surface of the inserting portion 21 with the panel 22. The example just above mentioned is called upper surface follow. Lower surface follow is also applicable, and it can offer similar effects. When a predetermined pressure is applied to the shaped product 16 to press it against the panel 22 in accordance with the present invention, the panel 22 is sometimes likely to have a corner deformed in comparison with a linear portion of the panel 22, which is noticeable in the case of the panel 22 having large curvature at the corner. In such a case, it is recommendable to release the pressing force to the shaped product 16 by the pressing member at only a portion which is likely to be deformed (e.g. the corner). Specifically, such an operation can be carried out by e.g. open the pressing member 20 in upper and lower directions or releasing pushing means (pushing by e.g. an air cylinder through e.g. a roller) on the pressing member 20 at the corner of the panel 22. In some cases, it is preferable to cool the shaped product after the shaped product 16 passes through the pressing member 20 as stated earlier. Although blowing cooled air or mist has been described in the example, the shaped product 16 may be quenched by contacting the shaped product 16 with a cooling member which has a groove formed to substantially conform with the shape of the shaped product 16. However, it is preferable to blow cooled air to cool the shaped product 16 in a non-contact manner in consideration of good appearance of the surface of the unified frame 17. With regard to the panel 22 used in the present invention, various types of panels used as a windowpane for a vehicle or building, such as a single glass sheet, laminated glass, laminated glass with a transparent synthetic resin film laminated on a glass sheet, and pair glass, are selectively adopted according to applications. Those types of glass sheets may be subjected to bending process, tempering treatment, function coating treatment or the like. Besides those glass sheets, a transparent organic resinous sheet called organic glass, or a glass sheet with the organic glass laminated thereon can be adopted. Examples of the resinous material for the frame 17 used in the present invention include materials usable in extrusion, such as a thermoplastic resin, and a thermoset or moisture setting resin which are heated and melted for use. Examples of the thermoplastic resin include a polyvinyl chloride, a copolymer of a vinyl chloride and an ethylene, a styrene resin and an olefin resin. Examples of the thermoset resin and the moisture setting resin include an urethane resin and a silicone resin. Besides, there can be used e.g. a vinyl chloride in a sol state which is extruded from the shaping die, is shaped and then is heated so as to be formed as the frame 17. Among those materials, it is preferable to select the thermoplastic resin in order that the extruded shaped product 16 has only the outermost portion solidified so as to posses excellent adhesion at the connection portion with the panel 22. Although also in the case of using the moisture setting resin or the thermoset setting resin, moisture or heat can be given only to the surface of the extruded shaped product to solidify only the outermost portion of the shaped product, it is difficult to control the extent of solidification. On the other hand, the thermoplastic resin can easily solidify only the surface of the shaped product 16 to the extent that neither deformation nor irregularities on the surface occurs because the thermoplastic resin can be subjected to cooling or self-cooling to solidify only a portion having a lower temperature even if the resin is melted to form an extrusion grade. The shape of the frame 17 is suitably determined according to applications or the like. The frame 17 is unified to the panel 22 so as to be attached on a single surface of the panel 22, a single surface and an end surface of the panel 22 or opposite surfaces of the panel 22 to cover the peripheral portion of the panel 22, according to applications or other factors. The method according to the present invention is the most effective when the frame 17 is unified to the opposite surfaces of the panel 22. In other words, the present invention offers excellent advantages in that it is possible not only to make the appearance of the frame 17 good but also to control the outer size of the panel 22 with the frame 17 with accuracy, which have not been offered by the prior art. In the case of unifying the frame 17 to the opposite surfaces of the panel 22, the frame 17 itself is exposed at the window opening, which means that if the appearance is poor the commercial value of the product lowers. In accordance with the present invention, even if there is caused vibration due to movement of the panel 22 or the pressing member 20, it is possible to prevent the frame 17 from having poor appearance because the panel 22 and the shaped product 16 for the frame 17 are unified together using the pressing member 20 after having extruded the shaped product 16. In particular, the outermost portion of the shaped product 16 which has already solidified by solidifying only the outermost portion of the shaped product 16 can prevent the appearance from being damaged to such vibration and from being deformed by the pressing member 20. The relative movement of the panel 22 and the pressing member 20 is carried out along the track which has been memorized in advance. As a result, even if there is an error in size of the panel 22, the error can be absorbed to prepare the panel 22 with the frame 17 unified thereto at the predetermined outer size.

Claims: A method for preparing a panel (22) with a resinous frame (17) wherein a shaped product (16) for the frame (17) is formed by extruding a resinous material in a predetermined shape from a resin shaping die (14), and the shaped product (16) is unified to at least one surface of the panel (22) at a peripheral portion thereof comprising following steps: arranging a pressing member (20) at a position apart from the shaping die (14) at a predetermined distance, the pressing member (20) having a hollow portion (21) formed therein to substantially conform to an outer shape of the frame (17) in section; causing the shaped product (16) extruded from the die (14) to advance through the hollow portion (21); inserting the peripheral portion of the panel (22) into a panel inserting portion (15) of the pressing member (20) to arrange the pressing member (20) at the peripheral portion of the panel (22); unifying the shaped product (16) to the peripheral portion of the panel (22) by pressing the shaped product (16) against the panel (22) while moving the pressing member (20) and the panel (22) relatively to each other and along the peripheral portion thereof; characterized by quenching an outer surface of the shaped product (16) before arriving at the hollow portion (21), thereby to lower a temperature of an outermost portion of the shaped product (16) to less than that of a connection portion of the shaped product (16) with the panel (22). A method according to Claim 1, characterized in that it further comprises: holding the panel (22) by an operating robot (24) to move the panel (22) according to a track that has been memorized in the robot (24); and relatively moving the pressing member (20) with respect to the panel (22) and along the peripheral portion thereof. A method according to Claim 1 or 2, characterized in that it further comprises blowing cooled air on the outer surface of the shaped product (16) to quench the outer surface of the shaped product (16). A method according to any one of Claims 1 to 3, characterized in that it further comprises quenching the shaped product (16) after having unified the shaped product (16) to the panel (22). A method according to Claim 4, characterized in that it further comprises quenching a portion of the shaped product (16) which corresponds to a corner of the panel (22). A method according to any one of Claims 1 to 5, characterized in that the frame (17) is unified to opposite surfaces of the panel (22), and the panel (22) and the pressing member (20) are relatively moved so that there is formed a space between a bottom of a panel biting portion (32) of the shaped product (16) and an end surface of the panel (22) preset to have a predetermined size. A method according to any one of Claims 1 to 6, characterized in that the frame (17) is unified to opposite surfaces of the panel, the shaped product (16) is formed so that it has a panel biting portion (32) formed to taper toward an opening just after having been extruded, and a slit plate (34) is arranged between the pressing member (20) and the shaping die (14) to expand the opening of the biting portion (32) so that the shaped product (16) smoothely bites the panel (22). A method according to any one of Claims 1 to 7, characterized in that the resinous material is a thermoplastic material. A method according to any one of Claims 1 to 8, characterized in that the panel (22) is a glass sheet for a vehicle window.

Inventors: HASHIMOTO HIDEYUKI, TAKAHASHI KAZUHIRO, TAKEDA HISASHI, HASHIMOTO, HIDEYUKI, TAKAHASHI, KAZUHIRO, TAKEDA, HISASHI, HASHIMOTO, HIDEYUKI, ASAHI GLASS CO., LTD., TAKAHASHI, KAZUHIRO, ASAHI GLASS CO., LTD., TAKEDA, HISASHI, ASAHI GLASS CO., LTD.
Applicants: ASAHI GLASS CO LTD, ASAHI GLASS COMPANY LTD.
Application year: 1996
Main classification: B29C67
IPC codes: B60J10, B29C35, E06B3, B29C63, B29C47