JP2005246896A - Method of and apparatus for hot press molding of resin product - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method of and an apparatus for hot press molding of resin products which enable a continuous composite lamination molding of platy or sheet-like resin products, for example, having a thickness of ≥3 mm and uniformity, enable flexible dealing with the molding of recycled resins derived from various materials and greatly contribute to the promotion of regenerating waste resin materials. <P>SOLUTION: This method comprises a process for feeding the materials 9 and 13 by a material feeding devices 2, 3 and 5, a process for heating and pressurizing the materials by the hot presses 11 and 12, and a process for correcting the width and thickness of the resultant processed materials 25 by a correction device 4. The apparatus is so composed as to continuously process the materials into the platy or sheet-like molded products by properly combining the above processes in response to a molding condition and controlling respective processes. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a method and an apparatus for hot-pressing a resin product, and in particular, it is difficult to produce by a conventional calender molding method, for example, continuous molding of a plate-like or sheet-like resin product having a thickness and uniformity of 3 mm or more. The present invention relates to a method and an apparatus for hot-pressure molding of resin products that can be flexibly adapted to recycled resin molding using recycled raw materials derived from various materials.

  In continuous molding of a plate-shaped or sheet-shaped resin product, molding by a double belt type hot press apparatus is one of very excellent molding methods. Its features are that it is easy to form thick products that are difficult to achieve with calendar molding (for example, wall thickness of 3 mm or more), and it is possible to form long products that are impossible with batch-type flat plate or multistage press molding. There is a certain point, and there is an advantage that a thickness uniformity similar to a flat plate press can be realized.

  On the other hand, in the molding method of the sheet material by the sol-gel method, the vinyl chloride sheet once molded and the resin powder regenerated from the resin sheet do not absorb the plasticizer and are not solated and are difficult to reuse. For this reason, the recycling compound by material recycling cannot be used, and it is unsuitable as a molding method of a recycled product.

  In recent years, the need for material recycling of waste resin products has increased, and technology development for recycling and reuse of these waste resin raw materials has been demanded. In sheet-shaped resin molding, there is a demand for the construction of a molding system capable of efficiently reusing recycled resin raw materials.

  In addition, although the inventors refer to the composite laminated product using the double belt type hot press apparatus and the manufacturing method thereof in the unpublished Japanese Patent Application No. 2003-436400, this defines a specific molding condition and It is used under the conditions, and when it becomes necessary to change the molding conditions depending on the material and product, it has not reached the point where each condition can be handled flexibly.

  The applicant and the inventor of the present application do not know the known patent documents and the known non-patent documents related to the present invention, so the description is omitted.

  The present invention has been made in order to eliminate the above-described disadvantages of the prior art, and the object of the present invention is to supply a material made of resin as a main raw material onto a process trajectory by a material feeding device. Conventional calender molding by heating and pressurizing the material with a hot press device and processing it into a plate or sheet shape, and then correcting the width and thickness to predetermined dimensions with a straightening device. For example, it is possible to continuously form a plate-shaped or sheet-shaped resin product having a thickness and uniformity of 3 mm or more, which is difficult to manufacture by a method or the like.

  Another object is to provide a material supply process using a material supply apparatus, a material heating and pressing process using a hot press apparatus, and a correction process for correcting the width and thickness of the workpiece processed by the process using a correction apparatus. Are combined as appropriate according to the molding conditions, and each process is controlled to continuously process the material into a plate-shaped or sheet-shaped molded product. It is to be able to be processed, and to thereby be able to easily manufacture a composite laminated resin product in which layers made of the same or different materials are stacked.

  Still another object of the present invention is to use a double belt type hot press device as the heat press device in the above method, so that continuous and uniform pressurization can be performed, and it has a certain thickness and good flatness. It is to be able to mold the material into a plate shape or a sheet shape.

  Another object of the present invention is to easily manufacture a composite laminated resin product in which layers made of the same or different materials are stacked by processing the material into a semi-molten block or sheet in the above method. Is to do so.

  Still another object of the present invention is to use one or more types of powder raw materials produced from waste or processed products of the powder raw materials, so that the main component of the material is made from a variety of resin waste materials. It is to increase the reuse rate of recycled raw materials and to enable efficient production of recycled products using the resin waste material, fiber waste material, etc. as the main raw material.

  Another object of the present invention is to provide a hot press molding apparatus that heats and presses a material mainly made of resin on a process track to form a molded product having a predetermined shape. A material supply device that is movably mounted and supplies material onto the process track, and at least one heat press that is arranged on the process track and is configured to be heated and pressurized to a predetermined thickness to form the material. The width and thickness of the workpiece processed by the hot press device on the downstream side of the predetermined hot press device on the process track, which is movably mounted on the process track and a retreat position other than the process track. And at least one straightening device configured to be able to correct the thickness, a material supply device, a heat press device, and a control device that controls the positioning and operation of each of the straightening device, and supplies the material according to molding conditions. By configuring the combination of equipment, heat press equipment and straightening equipment so that it can be changed, it is possible to achieve optimal production and production of small-lot, multi-product composite resin products by enabling optimum arrangement and control of the equipment group. It is.

  Still another object is the first and second endless belts arranged as above and below, each of which is configured to arbitrarily control the spacing, the driving speed and the driving direction, as the heat press device in the above configuration, In the pressurizing region where the second endless belt faces each other, a plurality of the endless belts are attached to the backside of the first and second endless belts so as to suppress looseness of the endless belt and press the material with a predetermined force. By using a double belt type heat press device having a roller that enables the heating region and a heating device that heats the pressure region to a predetermined temperature, the pressure region in which the first and second endless belts are opposed to each other In other words, it is possible to pressurize with a uniform pressure so that a molded article having a good thickness uniformity and flatness can be continuously manufactured to an arbitrary length.

  In short, in the method of the present invention (Claim 1), a material mainly made of resin is supplied onto a process track by a material supply device, and the material is heated and pressed by a hot press device on the process track to form a plate or After processing into a sheet shape, the width and thickness are corrected to predetermined dimensions by a correction device to form a molded product.

  Further, the method of the present invention (Claim 2) corrects the material supply step by the material supply device, the heating and pressurization step of the material by the hot press device, and the width and thickness of the workpiece processed by the step. A correction process to be corrected by an apparatus is appropriately combined according to molding conditions, and the respective processes are controlled to process the material continuously into the plate-shaped or sheet-shaped molded product. .

  The method of the present invention (Claim 3) is characterized in that, in the above method, a double belt type hot press apparatus is used as the hot press apparatus.

  The method of the present invention (Claim 4) is characterized in that, in the above method, the material is previously processed into a semi-molten block or sheet.

  The method of the present invention (Claim 5) is characterized in that, in the above method, the main composition of the material is one or more kinds of powder raw materials produced from waste or processed products of the powder raw materials. Is.

  The apparatus of the present invention (Claim 6) is a hot press molding apparatus for processing a material mainly made of a resin into a predetermined shape by heating and pressurizing on a process trajectory. A material supply device to be supplied; at least one hot press device configured to be heated and pressurized to be molded to a predetermined thickness; and processed by the hot press device downstream of the hot press device The apparatus further comprises at least one straightening device configured to be able to correct the width and thickness of the workpiece, and a control device that controls the hot press device and the straightening device.

  The apparatus of the present invention (Claim 7) is a hot press molding apparatus for processing a material mainly made of a resin into a predetermined shape by heating and pressurizing on a process trajectory. A material supply device that is mounted so as to be movable between other retreat positions and supplies the material onto the process trajectory, and is arranged on the process trajectory and can be molded to a predetermined thickness by heating and pressurizing the material. And at least one heat press device configured to be movable between the process track and a retracted position other than the process track on the downstream side of the predetermined heat press device on the process track. At least one straightening device configured to be able to correct the width and thickness of the workpiece processed by the hot press device, and each positioning with respect to the material supply device, the hot press device, and the straightening device And a control device for controlling the fine operation, is characterized in that it has changeable constructed of a combination of the correction device and the heat pressing apparatus and the material supply device according to molding conditions.

  The apparatus of the present invention (Claim 8) is characterized in that, in the above-mentioned configuration, the hot press devices are arranged in the vertical direction so that the interval, drive speed and drive direction can be arbitrarily controlled. A plurality of aligned endless belts are attached to the back side of the first and second endless belts in a pressure region where the first and second endless belts are opposed to each other, and the endless belts are prevented from slackening to be predetermined. It is a double belt type hot press apparatus provided with a roller that can pressurize the material with the force of and a heating device that heats the pressurizing region to a predetermined temperature.

  In the present invention, as described above, a material mainly made of resin is supplied onto a process track by a material supply device, and the material is heated and pressed by a hot press device on the process track to be processed into a plate shape or a sheet shape. After that, since the width and thickness were corrected to predetermined dimensions by a straightening device to form a molded product, a plate having a thickness and uniformity of, for example, 3 mm or more, which is difficult to manufacture by a conventional calendar molding method, etc. There is an effect that enables continuous molding of a resin product in the form of a sheet or sheet.

  Further, the material supply step by the material supply device, the material heating and pressurization step by the hot press device, and the correction step for correcting the width and thickness of the workpiece processed by the step by the correction device are used as the molding conditions. As appropriate, the materials are continuously processed into plate-shaped or sheet-shaped molded products by controlling each process, so that various materials can be processed into plates or sheets by various methods. In addition, as a result, it is possible to easily produce a composite laminated resin product in which layers made of the same or different materials are stacked.

  Furthermore, in the above method, since a double belt type heat press apparatus is used as the heat press apparatus, continuous and uniform pressurization is possible, and a plate or sheet having a certain thickness and good flatness is obtained. There is an effect that the material can be molded.

  In the above method, since the material is processed into a semi-molten block or sheet in advance, there is an effect that a composite laminated resin product in which layers made of the same or different materials are stacked can be easily manufactured. .

  Furthermore, in the above method, the main composition of the material is one or more types of powder raw materials manufactured from waste or processed products of the powder raw materials, so that the recycled raw materials from various types of resin waste materials can be used. An effect of increasing the reuse rate and enabling efficient production of a recycled product using the resin waste material, fiber waste material or the like as a main raw material can be obtained.

  In addition, it is possible to move between the process track and a retreat position other than the process track in a hot-pressure molding machine that heats and presses a material made mainly of resin on the process track to process a molded product of a predetermined shape. A material supply device that is attached and supplies material onto the process track, at least one hot press device that is arranged on the process track and is configured to be heated and pressurized to a predetermined thickness, and a process track It is possible to correct the width and thickness of the workpiece processed by the hot press device on the downstream side of the predetermined hot press device on the process track, which is mounted so as to be movable between the upper and the retreat positions other than the process track. And at least one configured straightening device, a material supply device, a heat press device, and a control device for controlling each positioning and operation with respect to the straightening device. Having changeable constructed combinations of the scan unit and the correcting device, as can the optimum placement and optimal control of the device group, the effect of realizing the efficient production of a composite laminate resin product of small lot multi-product is obtained.

  Further, as the heat press device having the above-described configuration, first and second endless belts which are respectively arranged above and below and can arbitrarily control the interval, the driving speed and the driving direction, and the first and second endless belts. A plurality of rollers mounted in alignment on the back sides of the first and second endless belts in a pressurizing region where the belts are opposed to each other, and capable of pressing the material with a predetermined force by suppressing looseness of the endless belts; The first and second endless belts are opposed to each other because a double belt type hot press apparatus including a heating device for heating the rollers and the first and second endless belts to respective predetermined temperatures is used. It is possible to pressurize with a uniform pressure in the pressurizing region, and to obtain an effect that a molded product having a good thickness uniformity and flatness can be continuously manufactured to an arbitrary length.

  Hereinafter, the present invention will be described based on embodiments shown in the drawings. The resin material hot pressing apparatus 1 according to the present invention includes a material supply device 2, 3, 5, and a first double belt type press device 11 and a second double belt as an example of a heat press device in FIGS. 1 and 2. A mold press device 12, a correction device 4, and a control device (not shown) are provided.

  The material supply device 2 is, for example, an extrusion device that is movably mounted on the process track 6 and between a retreat position 8 other than the process track, and configured to supply the material 9 onto the process track 6. is there. In the illustrated embodiment, the material supply device 2 is positioned on the upstream side of the first double belt type hot press device in the process track 6, but the position is not limited to this.

  The material 9 is a resin in which, for example, a plasticizer, a filler, a stabilizer, a foaming agent, an additive, and the like are blended. For example, 50% of a powder having a particle size of about 500 μm in a vinyl chloride backing layer of a waste tile carpet, 30% of the powder with a particle size of about 500μm in the long sheet and 20% of the short fibers of nylon that is the finishing material of the waste tile carpet (both by mass ratio) are used. It is a mixed, semi-soft clay material (block shape).

  The material supply device 3 is attached so as to be movable between the process track 6 and a retreat position 8 other than the process track, and is configured to supply the material 13 onto the process track 6. In the illustrated embodiment, the material supply device 3 is positioned on the upstream side of the first double belt type hot press device in the process track 6, but the position is not limited to this.

  The material 13 may be a single-layered material such as the material 9 described above, or may be a multi-layered sheet-shaped material in which different kinds of dimension stabilizing members such as a glass nonwoven fabric are arranged between layers.

  The material supply device 5 is movably mounted on the process track 6 and between a retreat position 14 other than the process track, and a finish material (not shown) such as a gravure printing sheet or the like, which is an example of a material, is provided on the process track 6. Wear-resistant sheet or the like). In the illustrated embodiment, the process track 6 is positioned on the downstream side of the correction device 4 and the upstream side of the second double belt type hot press device 12, but the position is not limited to this.

  2 and 3, the first double belt type pressing device 11 is arranged on the process track 6, and the material 9, 13 can be heated and pressed on the process track 6 to be formed to a predetermined thickness. In the illustrated embodiment, it is disposed downstream of the material supply devices 3 and 5.

  The first double-belt type pressing device 11 includes first and second endless belts 21 and 22 which are respectively arranged on the upper and lower sides and configured to be able to arbitrarily control the interval, the driving speed and the driving direction. A plurality of materials 9, 13 are attached to the back sides of the first and second endless belts in a pressurizing region 23 where the second endless belts are opposed to each other with a predetermined force while suppressing looseness of the endless belts. And a heating device 18 that heats the pressurizing region 23 to a predetermined temperature.

  The first endless belt 21 and the second endless belt 22 are wound around pulleys 19 and 20, respectively. By driving the pulleys, for example, the first endless belt 21 and The second endless belts 22 can be made to run in synchronization with each other.

  The separation distance between the first endless belt 21 and the second endless belt 22 can be freely changed by a driving mechanism (not shown), and the degree of pressurization and molding of the materials 9 and 13 by the separation distance. The thickness of can be determined.

  Each of the rollers 16 is rotatably supported, and is arranged so as to have as few gaps as possible in the pressurizing region 23 so as to press the materials 9 and 13 as uniformly as possible.

  The heating device 18 is, for example, an electric heater, and is disposed on the back side of the first endless belt 21 and the second endless belt 22 in the pressurizing region 23, respectively, and the roller 16, the first endless belt 21, and the second endless belt 21. The materials 9 and 13 can be heated to a predetermined temperature via the endless belt 22.

  The configuration of the second double belt type pressing device 12 is the same as the configuration of the first double belt type pressing device 11, and the description thereof will be omitted.

  2 and 4, the correction device 4 is attached to be movable between the process track 6 and a retreat position 24 other than the process track, and is a first double as an example of a predetermined heat press device on the process track. At least one unit configured to be able to modify the width and thickness of the workpiece 25 processed by the hot press device on the downstream side of the belt type hot press device 11, and in the illustrated embodiment, one unit is On the process track 6, it is positioned downstream of the first double belt type hot press device 11 and upstream of the material supply device 5.

  The correction device 4 is configured by combining a pair of left and right width sizing rolls 26 and a pair of upper and lower rolls 28 for thickness correction so that the width and thickness of the workpiece 25 can be measured. It has become. In addition, a measurement device (not shown) is provided separately from the correction device 4 and a measurement function is provided on the process track 6 and between a retreat position (not shown) other than the process track in the same manner as the correction device 4. It may be configured to be movable. This is because the degree of freedom of arrangement of the devices on the process track 6 is increased, and the configuration can be changed more flexibly.

  The control device is for controlling the positioning and operation of each of the material supply devices 2, 3, 5, the hot press devices 11, 12 and the straightening device 4, and is optimal for each device group according to the molding conditions. It is possible to control the combination and synchronous operation, the press pressure and the press temperature in the hot press devices 11 and 12, and the control of the cooling device 29, the cutting device 30 and the like.

  In FIG. 2, the cooling device 29 is movably mounted on the process track 6 and between a retreat position 31 other than the process track, and on the process track 6, on the downstream side of the second double belt type hot press device 12. This is for cooling a molded product (not shown) molded by the second double belt type hot press device 12.

  The cutting device 30 is mounted so as to be movable between the process track 6 and a retreat position 32 other than the process track. The cutting device 30 is positioned on the downstream side of the cooling device 29 on the process track 6 and is cooled by the cooling device 29. The formed product is cut to a predetermined length. In addition, when a molded product is a sheet form, a winding device (not shown) may be used instead of the cutting device 30, and other takeout means may be used.

  In addition, the movement between the process trajectory and the retreat position of each device described above may be electrically operated by a control device or may be manually operated. Each retreat position is not limited to the direction perpendicular to the direction of the process track 6. For example, each device is mounted on a pallet (not shown), and each device is placed between the pallet and the process track 6 as necessary. You may make it arrange | position by moving. This is because the flexibility of the system configuration is further increased, and maintenance management and the like are facilitated.

  In the method of the present invention (Claim 1), the materials 9, 13 mainly made of resin are supplied onto the process track 6 by the material supply devices 2, 3, 5 and the hot press units 11, 12 on the process track. Then, the materials 9 and 13 are heated and pressed to be processed into a plate shape or a sheet shape, and then the width and thickness are corrected to predetermined dimensions by the correction device 4 to obtain a molded product.

  Further, the method of the present invention (Claim 2) is processed by the steps of supplying the materials 9 and 13 by the material supply devices 2, 3 and 5, the heating and pressing steps of the material by the hot press devices 11 and 12, and the steps. The corrective process of correcting the width and thickness of the workpiece 25 by the correction device 4 is combined as appropriate according to the molding conditions, and the materials 9 and 13 are continuously formed into a plate or sheet by controlling each process. It is a method of processing into a product.

  The method of the present invention (Claim 3) is a method of using the double belt type hot press apparatuses 11 and 12 as the hot press apparatus in the above method.

  The method of the present invention (Claim 4) is a method in which, in the above method, the material 9 is processed into a semi-molten block or sheet in advance.

  The method of the present invention (Claim 5) is a method in which, in the above method, the main components of the materials 9 and 13 are one or more kinds of powder raw materials manufactured from waste or processed products of the powder raw materials. .

  The present invention is configured as described above, and the operation thereof will be described below. As shown in FIG. 2, for example, the resin product hot-pressure molding apparatus 1 includes a material supply device 2, 3, 5, a straightening device 4, a cooling device 29, and a cutting device 30. 14, 24, 31, and 32, and as shown in FIG. 5, other than the material supply device 3 is arranged on the process track 6 and the material 9 is supplied from the material supply device 2, and vice versa. In addition, as shown in FIG. 6, materials 13 other than the material supply device 2 can be arranged on the process track 6 and the material 13 can be supplied from the material supply device 3. At this time, since the material supply device 5 is also disposed on the process track 6, it is possible to supply a material (not shown) from the material supply device 5.

  The combination of these device groups can be changed freely and quickly depending on the type of material, molding conditions, etc., and can be handled very flexibly. For example, when the material 9 is first supplied from the material supply device 2 and then the material 13 is supplied from the material supply device 3 to perform composite lamination molding, or the lamination molding of the finishing layer is unnecessary, the material supply device 5 Can be saved, and other combinations are possible. Each device group is connected, for example, in series on the process track 6.

Here, as an example, the operation in the case of using all the device groups in addition to the material supply devices 2, 3, and 5 will be described. In FIGS. 1, 5, and 6, when materials 9 and 13 are supplied to the process track 6 from the material supply devices 2 and 3, the materials are heated and pressurized by the first double belt type hot press device 11. As an example of the pressing conditions, the pressing pressure is 490 kPa (5 kgf / cm ² ), the pressing temperature is 150 ° C., the length of the pressing region 23 is 3 m, the traveling speed of the endless belts 21 and 22 is 6 m / min, and the material 9 , 13 is placed in the pressed state for 0.5 minutes.

  As shown in FIG. 4, the workpiece 25 processed by the first double belt type hot press device 11 enters the correction device 4 and proceeds in the direction of arrow A, while measuring the width and thickness dimensions while the arrow 25 The width dimension is corrected by the roll 26 rotating in the B direction and the arrow C direction, and the thickness dimension is further corrected by the roll 28.

Next, a finishing material (not shown) such as a gravure printing sheet or a wear-resistant sheet is supplied from the material supply device 5 so as to be superimposed on the workpiece 25, and heated and heated by the second double belt type hot press device 12. Pressed. As an example of the press conditions, the press pressure is 588 kPa (6 kgf / cm ² ), the press temperature is 160 ° C., the pressurization zone length is 3 m, the endless belt travel speed is 6 m / min, the workpiece 25 and the finish The material is placed in a pressed state in a laminated state for 0.5 minutes.

  After the pressurization is completed, the workpiece 25 is cooled by the cooling device 29 and completed as a molded product (product). The molded product is cut to a predetermined length by the cutting device 30 and taken out. When the molded product is a sheet, winding is performed by a winding device (not shown) instead of the cutting device 30.

  The hot press molding apparatus 1 for resin products according to the present invention uses the first double belt type hot press apparatus 11 and the second double belt type hot press apparatus 12, so that the thickness is changed from a thin sheet. For example, it is possible to produce a molded product having a uniform thickness up to a plate shape of 3 mm or more and having no unnecessary unevenness and good flatness. In addition, since the combination can be freely changed by systematization of the device group, various resin products using various materials can be manufactured.

  Therefore, according to the molding apparatus 1 for resin products according to the present invention, a composite of recycled resin products having a thickness uniformity of 3 mm or more mainly using various waste resin powder products obtained from industrial waste as raw materials. Lamination molding can be realized, which greatly contributes to the promotion of recycling of waste resin raw materials.

It is a flowchart of the hot press molding of a resin product. FIG. 3 is a plan view of a state in which a material supply device, a correction device, a cooling device, and a cutting device are all in a retracted position in a hot-press molding device for resin products. It is a side view which shows the state by which the workpiece is pressurized by the 1st double belt type hot press apparatus. It is a top view which shows the state by which the width dimension and thickness dimension of a workpiece are corrected by the correction apparatus. FIG. 5 is a plan view of a state in which one of the material supply devices is in a retracted position in the hot-press molding apparatus for resin products. FIG. 6 is a plan view showing a state in which one material supply device different from the case of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Hot press molding apparatus of resin product 2 Material supply apparatus 3 Material supply apparatus 4 Correction apparatus 5 Material supply apparatus 6 Process trajectory 8 Retraction position 9 Material 10 Retraction position 11 1st double belt type heat press apparatus 12 which is an example of a heat press apparatus 12 Second double belt type heat press device as an example of a heat press device 13 Material 14 Retraction position 18 Heating device 21 Endless belt 22 Endless belt 23 Pressurization area 24 Retraction position 25 Workpiece

Claims (8)

  A material containing resin as a main raw material is supplied onto a process track by a material supply device, and the material is heated and pressed by a hot press device on the process track to be processed into a plate shape or a sheet shape. A method for hot-pressing a resin product, wherein the width and thickness are corrected to predetermined dimensions to obtain a molded product.   The material supply step by the material supply device, the heating and pressurization step of the material by the hot press device, and the correction step of correcting the width and thickness of the workpiece processed by the step by the correction device are used as molding conditions. A method for hot-pressing a resin product, which is appropriately combined with each other and controls the steps to continuously process the material into the plate-shaped or sheet-shaped molded product.   The method for hot-pressing a resin product according to any one of claims 1 and 2, wherein a double belt type hot press device is used as the hot press device.   The method for hot pressing a resin product according to any one of claims 1 to 3, wherein the material is previously processed into a semi-molten block or sheet.   5. The resin product according to claim 1, wherein the main composition of the material is one or more kinds of powder raw materials manufactured from waste or a processed product of the powder raw materials. Hot press molding method.   In a hot-pressure molding apparatus that heats and presses a material mainly made of resin on a process track to process the molded product into a predetermined shape, a material supply device that supplies the material onto the process track, and heats the material And at least one hot press device configured to be pressed to form a predetermined thickness, and the width and thickness of a workpiece processed by the hot press device on the downstream side of the hot press device can be corrected. A hot press molding apparatus for a resin product, comprising: at least one straightening device configured as described above; and a control device that controls the hot press device and the straightening device.   In a hot-pressure molding device that heats and presses a resin-based material on a process track to process it into a molded product of a predetermined shape, it can move between the process track and a retreat position other than the process track. A material supply device that is attached and supplies the material onto the process track, and at least one heat press device that is disposed on the process track and configured to be heated and pressurized to a predetermined thickness. And the width of a workpiece processed by the hot press device on the process track and downstream of the predetermined heat press device on the process track so as to be movable between the process track and a retracted position other than the process track. And at least one straightening device configured to be capable of correcting the thickness, the material supply device, the heat press device, and a control device for controlling the positioning and operation of each of the straightening device and the straightening device. For example, molding conditions wherein the material supply device and the hot press device and the correcting device and thermal molding apparatus of a resin product, characterized in that the combination is capable of changing was in response to.   The heat press apparatus includes a first endless belt and a second endless belt which are arranged vertically and are configured such that the interval, the driving speed and the driving direction can be arbitrarily controlled, and the first and second endless belts are relative to each other. A plurality of rollers mounted in alignment on the back sides of the first and second endless belts in the pressurizing region, and capable of pressing the material with a predetermined force by suppressing looseness of the endless belts; The apparatus for hot-pressing a resin product according to claim 6 or 7, wherein the apparatus is a double-belt type hot press apparatus provided with a heating apparatus for heating the pressure region to a predetermined temperature.

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