JP2008055628A - Thermal deformation method of thermoplastic resin plate - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a simple thermal deformation method of a thermoplastic resin plate. <P>SOLUTION: The thermal deformation method of the thermoplastic resin plate is characterized in that the thermoplastic resin plate is integrally adsorbed on and fixed to the adsorbing surface of a mold member equipped with the adsorbing surface having a predetermined shape or the adsorbing surface capable of being deformed into a predetermined shape and the thermoplastic resin plate is integrally adsorbed and fixed to be heated and cooled. If a foamed resin sheet is used as the adsorbing surface, the thermoplastic resin plate is thermally deformed by an especially simple constitution. The mold member may be constituted so as to include an adsorbing mechanism wherein a large number of fine holes are formed to a part of the surfaces of the mold member to be set to the adsorbing surface and an adsorbing mechanism for sucking air by a suction mechanism separately provided from the fine holes is contained. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a method for thermal deformation of a thermoplastic resin plate. In particular, the present invention relates to a method for deforming a flat thermoplastic resin plate into a predetermined shape, and this method is also a thermal deformation method that combines annealing that removes thermal strain and internal stress that remains when the thermoplastic resin plate is molded. .

  For example, in the molding method disclosed in Japanese Patent Application Laid-Open No. 2002-59478, a molded body and a molding die are arranged in a space constituted by two sheet bodies, and the space is decompressed to form the molded body. Is pressed against the mold and further heated to form the object to be molded into the shape of the mold. For this reason, the apparatus which performs this shaping | molding requires two sheet bodies, and had a complicated structure.

Further, in the method for correcting the shape of a molded body disclosed in Japanese Patent Application Laid-Open No. 2002-264131, the molded body is placed in a space constituted by a mold and a sheet, and the space is decompressed to form the molded body into a mold. The shape of the molded body is corrected by pressing and further heating. For this reason, a sheet body is necessary as an apparatus for performing the correction, and the structure is complicated.
JP 2002-59478 A JP 2002-264131 A

  Accordingly, the present invention provides a method for thermal deformation of a thermoplastic resin plate having a simple configuration in order to solve the above-described conventional problems.

The method for thermal deformation of the thermoplastic resin plate according to the present invention includes:
A thermoplastic resin plate is integrally fixed to an adsorption surface of a mold member having an adsorption surface having a predetermined shape or an adsorption surface that can be deformed into a predetermined shape, and is heated and cooled.

  The suction surface may be formed of a foamed resin sheet having a large number of bubble holes to form the suction surface. The foamed resin sheet may be made of foamed acrylic resin.

  The mold member may have a large number of micropores or microgrooves on the suction surface of a predetermined shape, and the suction surface may be configured by a mechanism that sucks and sucks air from the microholes or the microgrooves by a suction mechanism. .

  As is apparent from the above configuration, the thermoplastic resin plate thermal deformation method according to the present invention can be grasped as a thermal deformation method in which only one main surface of the thermoplastic resin plate is held by a mold member. .

In the present specification, the term “thermoplastic resin plate” is used to mean not only a plate-like body but also a sheet-shaped or film-shaped thermoplastic resin.
In the present invention, for example, a metal plate bent into a predetermined shape can also be used as the mold member. Therefore, the mold member in the present invention is not limited to the meaning of a mold such as a so-called mold.

With the configuration as described above, the method for thermally deforming a thermoplastic resin plate according to the present invention may be performed by holding only one main surface of the thermoplastic resin plate with a mold member and thermally deforming the resin plate. It is a processing method. In addition, this thermal deformation method also has an annealing effect.
Furthermore, if a foamed resin sheet is used as the adsorption surface, it is possible to provide a thermal deformation method for a thermoplastic resin plate having a simple structure.

  The inventor has studied a holding and fixing method when the thermoplastic resin plate is thermally deformed. As a result of trial and error, one main surface of the thermoplastic resin plate is substantially entirely held and fixed by an adsorption surface having a large number of minute adsorption structures provided in the mold member, and the thermoplastic resin plate is thermally deformed. I thought.

  An example of a foamed resin sheet is shown as a structure for adsorbing a thermoplastic resin plate. This will be described with reference to FIG. When the acrylic resin is foamed and spread on the film sheet (51), a foamed layer (52) containing a large number of bubbles (53) is formed. Then, a large number of bubble-like holes (54) are formed on the surface to constitute the suction surface (55). In this way, the foamed resin sheet (5) is formed. The foamed resin sheet (5) is fixed to the surface of the mold member (21) with an adhesive (6) or a double-sided adhesive sheet (see FIG. 2). The mold member in this case is a bent metal plate (21). In FIG. 2, although it fixed with the adhesive agent (6), if it does not raise | generate a problem especially by the heating in the case of a thermal deformation, it will not restrict to this.

  A thermoplastic resin plate is pressed and fixed to the suction surface of the foamed resin sheet to be integrated with the mold member. At this time, it is good to adsorb and fix the substantially entire surface of the resin plate.

  Further, when the acrylic resin is expanded on the back side of the film sheet (51) and developed, a double-sided foamed resin sheet (5) can be obtained (see FIG. 1B). The mold member and the resin plate may be adsorbed and fixed through a double-sided foamed resin sheet and integrated.

  On the other hand, as another structure for adsorbing a thermoplastic resin plate, an example of a mold member using a suction mechanism is shown. As shown in FIG. 3, the mold member 4 has, for example, a plurality of fine holes (42) formed on a part of the surface of a metal mold member (41) to form an adsorption surface (43). It is preferable to include a mechanism for sucking air by a suction mechanism provided separately. The suction mechanism is an exhaust pump (44) in this example. A central portion of the metal mold member (41) is a space (45), and is connected to a large number of fine holes (42). The space (45) and the exhaust pump (44) are connected by a pipe (47) through a valve (46). Although FIG. 3 is a cross-sectional view, hatching is not applied to prevent the drawing from being difficult to see. A fine groove may be used instead of the fine hole. Moreover, the adsorption | suction surface may be comprised by both the fine hole and the fine groove | channel.

  By heating and cooling a resin plate integrated with a mold member having a predetermined-shaped suction surface by such an adsorption mechanism, the thermoplastic resin plate can be thermally deformed into a predetermined shape. The method for thermally deforming a thermoplastic resin plate according to the present invention is characterized by the method for holding and fixing the resin plate when thermally deforming.

  A specific method for thermally deforming the thermoplastic resin plate into a predetermined shape will be described. For example, as shown in FIG. 4, a one-dimensionally bent metal plate (21) having a relatively large radius of curvature is prepared as a mold member, and a foamed resin sheet (5) is bonded to this with an adhesive (6). Keep it fixed. The resin plate (1) is pressed against the adsorption surface (55) of the foamed resin sheet (5), adsorbed and integrated, and further heated and cooled. If it carries out like this, it can be set as the resin board (11) thermally deformed to the shape which followed the shape of the type | mold member (21). Note that the resin plate (1) just pressed is only deformed by elasticity.

  As another specific deformation method, the integrated mold member and the thermoplastic resin plate may be mechanically bent into a predetermined shape. For example, as shown in FIG. 5 (a), a metal plate, for example, a flat stainless steel plate (22) is prepared as a mold member, and the metal plate (22) and the resin plate (1) are formed into a foamed resin sheet (5). The integrated metal plate and the resin plate may be deformed into a predetermined shape before or during heating, and then cooled to deform the thermoplastic resin plate.

  This will be described with reference to FIGS. 5 (a) and 5 (b). The flat stainless steel plate (22) is mechanically deformed to form a stainless steel plate (23) bent upwards. The thermoplastic resin plate (1) integrated with the stainless steel plate (23) by the adsorption surface (55) is thermally deformed according to its shape, and further heated and cooled to thereby thermally deform the resin plate (11). It becomes.

  Here, when the deformation is performed before heating, the deformation is within a range in which the integration of the mold member and the thermoplastic resin plate is maintained. In the case of deformation during heating, the thermoplastic resin plate is more easily deformed and can follow a larger deformation, which is preferable.

  Furthermore, another specific deformation method will be described with reference to FIGS. 6 (a) and 6 (b). The adsorption surface (55) of the mold member (21) may be arranged upward, and the thermoplastic resin plate (1) may be placed thereon, and heated and cooled. By heating, the thermoplastic resin plate (1) softens and deforms due to its own weight, following the shape of the adsorption surface (55). When it is cooled, it becomes a thermally deformed thermoplastic resin plate (11). At that time, the thermoplastic resin plate (11) can be adsorbed and fixed by the adsorbing surface (55) of the foamed resin sheet (5), so that the shape can be fixed by cooling while maintaining the shape.

  In the case of adsorption by a suction mechanism, if the thermoplastic resin plate is thermally deformed and follows the shape of the adsorption surface, it can be adsorbed as it is. In the case of adsorption by the foamed resin sheet, the air in the foam hole is expanded by heating, and the volume of the air is shrunk during cooling and the foam hole is in a reduced pressure state. Can be adsorbed.

  As described above, in the thermal deformation method of the thermoplastic resin plate described above, if the cooling conditions are appropriately set, it is possible to remove the thermal strain and internal stress when the thermoplastic resin plate is molded. That is, it can be said to be a thermal deformation method that also has an annealing of the thermoplastic resin plate.

The adsorbable foamed resin sheet used in the present invention is preferably made from a resin such as an acrylic resin, silicone rubber, silicone gel, or fluororubber. Preferably, an elastic resin is used. A gas such as air is added to the resin raw material, and it is applied to a mechanical foaming machine. Then, gas escapes from the surface or bubbles break, and open bubbles, that is, bubble-shaped hole groups are formed. If this foam hole group is left as it is and vulcanized or crosslinked, each foam hole becomes a fine suction cup. A preferable number of the fine suction cups is 10,000 to 30,000 / cm ² . Independent foam remains in the foamed resin sheet.

  The average diameter of the fine suction cups is preferably in the range of 1 to 300 μm. No pressure sensitive adhesive or adhesive is present on the adsorption surface of the foamed resin sheet. Adhesives and adhesives change in quality or discolor due to heating, causing problems.

  In addition, such a foamed resin sheet is marketed with the following brand names. These include Zeon AL sheet (Zeon Kasei Co., Ltd.), Diafit (Diamic Co., Ltd.), Pitatto-kun (Ookura Paper Co., Ltd.). Since these foamed resin sheets do not use an adhesive or the like, the foamed resin sheet has a feature that no adhesive or the like remains on the peeled mark.

  Other materials for the foamed resin sheet include polystyrene-based elastomers (for example, trade names “Tufprene” and “Toughtech” manufactured by Asahi Kasei Kogyo Co., Ltd.), olefin-based elastomers (for example, product names “Dynalon CEBC” manufactured by JSR, Mitsui Chemicals, Inc.) (Product name “Mistramer”), urethane elastomer, ester elastomer, amide elastomer, chlorinated polyethylene elastomer, Syn-1,2-polybutadiene, Trans-1,4-polyisoprene, fluorine elastomer, etc. can be used. . These are described in “Plastics Data Book” published by the Industrial Research Council, December 1, 1999, pages 854 to 857, and the polymers described therein can also be used in the present invention.

  In addition, as a thermoplastic resin material to be processed in the deformation method, polypropylene (PP), polyethylene terephthalate (PET), polyethylene naphthalate (PEN), polyamide (PA), polyimide (PI), polyphenylene sulfide (PPS), Examples thereof include polyetheretherketone (PEEK), polyethersulfone (PES), and polyetherimide (PEI).

  Thus, according to the deformation method of the present invention, for example, a polypropylene plate (melting point: 160 ° C. to 165 ° C., heat distortion temperature: 124 ° C.) or a polyethylene terephthalate film (melting point: 255 ° C., glass transition temperature: 76 ° C. to 77 ° C.). ) Is preferably contracted by heat treatment at 150 ° C. for 90 minutes, but it does not cause irregular deformation.

  This is because the mold member and the PP plate or PET film, which are thermoplastic resin plates, are substantially adsorbed and fixed over the entire surface, and are heated and cooled while following the shape of the adsorption surface. It is considered that irregular deformation different from the shape of the adsorption surface does not occur.

  It is a surprising phenomenon that when the thermoplastic resin plate is thermally deformed, if it is adsorbed on the adsorption surface of the mold member, irregular thermal deformation does not occur. The reason for this is that if a PP plate or PET film alone is heat-treated at, for example, 150 ° C. for 90 minutes, the PP plate or PET film is always thermally deformed irregularly and becomes amorphous.

  As described above, the present invention has a feature in a method of fixing and holding the thermoplastic resin molded plate when it is thermally deformed. The heating and cooling conditions and the like may be appropriately selected according to the type of thermoplastic resin to be thermally deformed. For example, the heating temperature is preferably in the range of 100 ° C to 150 ° C.

Hereinafter, the present invention will be further described with reference to specific examples.
(Specific example 1)
(1) Preparation of foamed resin sheet 1000 g of acrylic copolymer resin (trade name “DICNAL MEP-20WO” manufactured by Dainippon Chemical Co., Ltd.) and foam stabilizer (trade name “DICNAL M-40” manufactured by Dainippon Chemical Co., Ltd.) 100 g, 100 g of thickener (trade name “DICNAL MX” manufactured by Dainippon Kagaku Kogyo Co., Ltd.) and 50 g of cross-linking agent melamine resin (product of Dainippon Chemical Co., Ltd.) are mixed to form an acrylic emulsion. An acrylic emulsion liquid containing air bubbles having a foaming ratio of 1.5 times was prepared by putting in an automatic foaming machine and mixing air.

  This acrylic emulsion liquid was applied onto one surface of a polyethylene terephthalate film sheet (width 30 cm, thickness 50 μm, long product) with a knife coater so as to have a dry thickness of 200 μm. Crosslinking was carried out while drying to 9 ° C. over 9 minutes. Thereafter, a protective film made of polyethylene terephthalate having a thickness of 30 μm was coated on the crosslinked acrylic resin layer. Thus, an acrylic resin foam layer could be formed on one side of the polyethylene terephthalate film sheet.

This foamed layer surface of the acrylic resin, gas foam hole in which the or bubbles formed by destroyed missing there was a rate of from 10,000 to 30,000 pieces / cm ^2. The surface of this foam layer functions as an adsorption surface.

Thus, the foamed resin sheet which consists of a foamable acrylic resin was manufactured. When this foamed resin sheet was pressed against a glass plate, an adsorption force of 80 to 90 kg / cm ² was obtained.

  In addition, when this acrylic emulsion liquid is apply | coated and bridge | crosslinked also to the back surface of the film sheet mentioned above, it can be set as a double-sided type foamed resin sheet.

  The cross-sectional schematic diagram of the obtained foamed resin sheet is shown in FIG. FIG. 1A shows a single-sided type, and FIG. 1B shows a double-sided type foamed resin sheet. The foamed resin sheet (5) has an acrylic foamed resin layer (52) formed on the surface of a polyethylene terephthalate film sheet (51). A foam-like hole group (54) is formed on the surface of the foamed resin layer (52), and contains independent bubbles (53) inside. The acrylic resin layer (52) is a foam containing elastic closed cells.

  FIG. 7 is a photograph of the adsorption surface (55) of the foamed resin sheet observed with a scanning electron microscope (manufactured by Hitachi, Ltd., S-4500, acceleration voltage: 5 kV, photographing magnification: 250 times). Although there are places where a plurality of bubbles are combined, it can be seen that it is basically an independent foam. It can be seen that the boundaries of the individual bubbles are clearly observed and can function as a fine suction cup.

  FIG. 8 is a photograph of the cross section of the foamed resin sheet observed with a scanning electron microscope. Although there are places where a plurality of bubbles are united, no part that communicated in the thickness direction of the foamed resin sheet was found, and it was confirmed that the foam was an independent foam.

(2) Deformation method As shown in FIG. 9, a glass plate (24) bent one-dimensionally with a radius of curvature of several meters was used as a mold member. The above-mentioned foamed resin sheet (5) was fixed to this glass plate (24) with an adhesive (6). The polypropylene plate (1) was adsorbed to this and integrated. In this case, since the radius of curvature is as large as several meters, it can be integrated with the bent glass plate by pressing the polypropylene plate.

  This was placed in an autoclave and heated at 150 ° C. for 90 minutes. Then, it cooled and took out the integrated glass plate and the polypropylene plate, and isolate | separated each. Although the thermal history mentioned above was received, the foamed resin sheet and the resin plate were not welded and could be removed without any problem. The melting point of polypropylene is 160 ° C. to 165 ° C., and the heat distortion temperature is 124 ° C.

  The polypropylene plate thermally deformed in this manner could be bent one-dimensionally with the same radius of curvature following the shape of the bent glass plate and thermally deformed into a shape. When this thermoplastic resin plate was observed, there was no particular change in the appearance of the surface other than thermal deformation, and it was slightly dimensionally shrunk, but no warping of the edge or irregular deformation was observed It was.

  In the above specific example 1, the glass plate and the foamed resin sheet were fixed with the adhesive (6) as shown in FIG. 9, but the double-sided type foamed resin sheet as shown in FIG. 1 (b) was used. Also good.

  Although FIG. 9 shows a case where the bent glass plate is convex upward, it may of course be convex downward.

(Specific example 2)
In specific example 2, instead of the bent glass plate of specific example 1, a stainless steel plate is used to thermally deform the resin plate. The heating conditions are the same as in specific example 1.

  As shown to Fig.5 (a), the foamed resin sheet (5) is first fixed to the stainless steel plate (22) with the adhesive agent (6). The polypropylene plate (1) is pressed and fixed to the suction surface (55) of the foamed resin sheet (5) to be integrated.

  Next, as shown in FIG. 5B, the integrated stainless steel plate (22) and the polypropylene plate (1) are put in an autoclave or the like and heated, and a predetermined shape, for example, Bend in one dimension with a predetermined radius of curvature. While maintaining this, it is cooled and the integrated stainless steel plate and polypropylene plate are taken out and separated from each other to obtain a thermally deformed polypropylene plate (11). The polypropylene plate (11) is thermally deformed following the bent stainless steel plate (23).

  Although FIG. 5 shows a case where the projection is bent upward, it may of course be convex downward.

  In the description of the specific example 2 described above, the shape to be thermally deformed is a simple shape of one-dimensional bending with a predetermined radius of curvature. However, since the mold member is a metal plate, it can be deformed into a complicated shape. For example, the cross-sectional shape may be S-shaped or J-shaped. That is, any shape is possible as long as the metal plate is deformable.

(Specific example 3)
In specific example 3, instead of the stainless steel plate of specific example 2, the resin plate is thermally deformed using a flexible structure that can form an arbitrary shape using a large number of wires.

  First, the mold member used in the specific example 3 has a free structure capable of forming a surface having an arbitrary shape. The freely structured member (3) is configured as follows. As shown in FIG. 10, first, the wire group holding plate (31) has a large number of through holes (33) having substantially the same diameter as that of the wires (32), and is formed at almost equal intervals on the entire main surface. Has been. Wires of the same length are inserted into the holes of the wire group holding plate. Thereby, a surface is comprised from the group of the end surface of each wire.

  At this time, the wire and the through hole may be in a so-called intermediate fitting state. By arbitrarily pushing the end face of each wire, it can be made into an arbitrary shape, and the shape can be easily maintained without being deformed. If there is a mold having a target shape, the shape can be copied as a convex shape or a concave shape by pressing the universal structure against the mold.

In FIG. 10, in order to prevent the drawing from becoming complicated, the number of through holes (33) is drawn in a rough state, and the wire (32) also shows the envelope (34) formed by the end face of a certain row of wires. As you can see, only one row is drawn vertically and horizontally. From this FIG. 10, it will be easily understood that the end face group of the wire group in which a large number of wires are two-dimensionally arranged constitutes an arbitrarily shaped surface.
In addition, it is not restricted to such a structure, What is necessary is just a universal structure which can achieve this objective. For example, a structure in which a large number of wires are bundled and strongly restrained by a frame body can be mentioned.

  As shown in FIG. 11, the free structure type member (3) used in Example 3 is a foamed resin sheet on one end of a group of end faces of each wire by a double-sided adhesive sheet (6) on the end face of each wire group. (5) is fixed. For example, a polypropylene plate (1) is pressed against the suction surface (55) of the foamed resin sheet (5) to be integrated. Then, if it carries out similarly to the specific example 2, the heat-deformed polypropylene board (11) can be obtained.

  Since the foamed resin sheet has flexibility, the adsorption surface of the foamed resin sheet also reflects the surface formed by the end faces of the wire group. In addition, when the foamed resin sheet is fixed to the end face of the wire group, the base material is limited to a continuous surface shape although it is an arbitrary shape. Therefore, if the foamed resin sheet is appropriately finely divided, it is possible to deal with discontinuous surface shapes and surface shapes with large changes.

(Specific example 4)
Specific example 4 is an example in which a mold member having a suction surface by forming a large number of fine holes on one surface of a metal member is used. The mold member only needs to have a structure as shown in FIG. In the mold member (4), the exhaust pump (44) sucks and exhausts air from a large number of fine holes (42), and presses the polypropylene plate (1) against the adsorption surface (43) to integrate them (see FIG. 12). thing). Then, if it carries out similarly to the specific example 2, the heat-deformed polypropylene board (11) can be obtained. 12 is not hatched for the same reason as in FIG.

(Specific example 5)
Specific Example 5 is an example in which an apparatus having the same configuration as in Specific Example 4 is used, a thermoplastic resin plate is thermally deformed, and is adsorbed and fixed following the shape of the adsorbing surface of the mold member. However, the shape of the suction surface of the mold member is different.

As shown in FIG. 13, first, the suction surface (43) of the mold member (4) in which a large number of micro holes (42) are formed is arranged upward, and a flat polypropylene plate is placed thereon. This is put into a heating device (not shown) and heated to thermally deform the polypropylene plate. Then, the polypropylene plate is bent by its own weight and follows the shape of the suction surface (43). Since the suction surface (43) is sucked and exhausted by the exhaust pump (44), the polypropylene plate (11) bent by its own weight is sucked and fixed. And if it cools, maintaining the shape, the heat-deformed polypropylene board (11) can be obtained.
13 is not hatched for the same reason as in FIG.

It is a cross-sectional schematic diagram of the foamed resin sheet used for this invention. It is a cross-sectional schematic diagram explaining a mode that the foamed resin sheet was fixed to the surface of a type | mold member. It is a cross-sectional schematic diagram explaining another structure which adsorb | sucks a thermoplastic resin board in a type | mold member. It is a cross-sectional schematic diagram explaining the deformation | transformation method which uses the metal plate bent to the one dimension as a type | mold member. It is a cross-sectional schematic diagram explaining the deformation | transformation method which integrates a mold member and a thermoplastic resin board, and deform | transforms them after that. It is a side surface schematic diagram explaining the deformation | transformation method which integrates a mold member and a thermoplastic resin board using the thermal deformation of a thermoplastic resin board. It is the photograph which observed the adsorption surface of the foamed resin sheet used for this invention with the scanning electron microscope. It is the photograph which observed the cross section of the same foamed resin sheet with the scanning electron microscope. It is a cross-sectional schematic diagram explaining the characteristic in the deformation | transformation method of the specific example 1. It is a perspective view explaining the structure of the type | mold member used for the deformation | transformation method of the specific example 3. FIG. It is a side view explaining the structure of the type | mold member used for the deformation | transformation method of the specific example 3. It is a cross-sectional schematic diagram explaining the characteristic in the deformation | transformation method of the specific example 4. It is a cross-sectional schematic diagram explaining the characteristic in the deformation | transformation method of the specific example 5.

Explanation of symbols

1: Thermoplastic resin plate 11: Thermally deformed thermoplastic resin plate 21: Mold member 22 made of a metal plate having a predetermined shape 22: Metal plate 23 deformable into a predetermined shape 23: Mold member made of a metal plate deformed into a predetermined shape 24: Mold member made of a glass plate having a predetermined shape 3: Swivel structure mold member 31: Wire group holding plate 32: Wire 33: Through hole 34: Envelope formed by the end surface of one row of wires 4: Mold member 41 by suction mechanism : Metal mold member 42: Fine hole 43: Adsorption surface 44: Exhaust pump 45: Space 46: Valve 47: Pipe 5: Foamed resin sheet 51: Film sheet 52: Foam layer 53: Bubble 54: Foam sucker (foam Hole)
55: Adsorption surface 6: Adhesive (double-sided adhesive sheet)

Claims (10)

  A mold member having an adsorption surface having a predetermined shape or an adsorption surface that can be deformed into a predetermined shape and a thermoplastic resin plate are integrally fixed by adsorption with the adsorption surface, and heated and cooled. A method for thermal deformation of a thermoplastic resin plate.   2. The method for thermally deforming a thermoplastic resin plate according to claim 1, wherein the adsorption surface is formed of a foamed resin sheet in which a large number of bubble holes are formed to form an adsorption surface.   The method according to claim 1, wherein the mold member is provided with the foamed resin sheet on a surface of a metal plate that can be deformed into a predetermined shape.   The mold member has a flexible structure in which a large number of wires are arranged in parallel and two-dimensionally, and an end surface of the wire group can form a surface of an arbitrary shape, and the foamed resin is formed on the end surface of the wire group. The method for thermal deformation of a thermoplastic resin plate according to claim 1, wherein a sheet is provided.   5. The thermal deformation of the thermoplastic resin plate according to claim 3, wherein the integrated mold member and the thermoplastic resin plate are mechanically deformed into a predetermined shape and heated and cooled while maintaining the shape. Method.   The method for thermal deformation of a thermoplastic resin plate according to claim 2, wherein the foamed resin sheet is a foamed resin sheet obtained by foaming an acrylic resin and forming a large number of bubble holes on the surface thereof to form an adsorption surface. .   The mold member has a large number of fine holes or fine grooves on an adsorbing surface of a predetermined shape, and the adsorbing surface is configured by a mechanism that sucks and adsorbs air from the fine holes or the fine grooves by a suction mechanism. 2. A method for thermal deformation of a thermoplastic resin plate according to 1.   Place the adsorption surface of the mold member upward, place the thermoplastic resin plate on it, heat it to thermally deform the thermoplastic resin plate, and adsorb it according to the shape of the adsorption surface The method for thermal deformation of a thermoplastic resin plate according to claim 1, wherein the thermoplastic resin plate is cooled while being fixed and maintained in shape.   The method for thermally deforming a thermoplastic resin plate according to claim 1, wherein substantially the entire main surface of the thermoplastic resin plate is adsorbed and fixed by the adsorption surface.   The method for thermal deformation of a thermoplastic resin plate according to claim 1, wherein the heating temperature is equal to or higher than a glass transition temperature of the thermoplastic resin.