Method for setting up a resin sheet extrusion molding machine

Abstract

To make it easy and safe to start up the plastic sheet extrusion device.SOLUTION: The molten resin is extruded into a sheet from the die 19 in the extrusion device 11. The extruded resin sheet 12 is passed through the roll type sheet forming machine 23 in the forming device 14 to form the sheet-like product. At that time, a lead film 34, which is fed by the rotation of the forming roll 28 in this roll type sheet forming machine 23, is set in advance in the roll type sheet forming machine 23, and the resin sheet 12 guided to the sheet forming machine 23 is adhered to the lead film 34.SELECTED DRAWING: Figure 3

Description

Technical Field

[0001] The present invention relates to a method for starting up an extrusion molding apparatus for resin sheets.

Background Art

[0002] Devices and methods for extruding molten resin from a die of an extrusion device in a sheet shape and forming a sheet-like product by passing the extruded resin sheet through a roll-type sheet forming machine in a molding device are described, for example, in Patent Document 1.

[0003] In such devices and methods, it is difficult to extrude a resin sheet with stable properties from the die immediately after the start of operation of the device. For this reason, the resin sheet extruded for some time until the properties of the resin sheet become stable does not have the required quality as a product and cannot be commercialized using this. Therefore, it is necessary to exclude that part of the resin sheet from the process.

[0004] For this reason, in known manufacturing processes, immediately after the start of operation of the device, the resin sheet extruded from the die is received on a suitable receiving stand without being supplied to the molding device. Then, after the properties of the resin sheet become stable, an operator manually cuts the resin sheet and moves the receiving stand to a position other than the receiving position of the resin sheet from the die. Further, after moving the molding device to the position after moving the receiving stand, an operation is performed of passing, by hand, the resin sheet from which the unstable part has been removed by cutting along a plurality of rolls in the molding device.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0006] However, the resin sheet immediately after being extruded from the die is at a high temperature of 70-450°C, making it difficult to cut by hand. Furthermore, handling the molten resin sheet newly extruded from the die after cutting the resin sheet while its properties are still unstable requires considerable skill. Moreover, moving the molding machine to the vicinity of the die, starting the machine, and feeding the resin sheet into the machine requires the work of multiple operators, and such work is often dangerous. In addition, during such work, the die continues to discharge, or extrude, the resin, so even if problems such as imbalance occur, the machine cannot be stopped midway.

[0007] Therefore, the present invention aims to solve these problems and enable the easy and safe startup of a resin sheet extrusion molding apparatus. [Means for solving the problem]

[0008] To achieve this objective, the method for starting up the resin sheet extrusion molding apparatus of the present invention is as follows: When extruding molten resin into a sheet from the die of an extrusion device, and passing the extruded resin sheet through a roll-type sheet molding machine in a molding device to form a sheet-shaped product, The method is characterized by pre-setting a lead film in the roll-type sheet molding machine, which is fed by the rotation of the molding rolls in the roll-type sheet molding machine, and then adhering the resin sheet guided to the sheet molding machine to the lead film.

[0009] According to the method for starting up a resin sheet extrusion molding apparatus of the present invention, The sheet receiving device receives the resin sheets that are unsuitable for paper feeding as they are extruded from the die. It is preferable to cut and remove the resin sheet received by the sheet receiving device, and to guide the remaining portion of the resin sheet after cutting to the sheet molding machine.

[0010] According to the method for starting up a resin sheet extrusion molding apparatus of the present invention, it is preferable to lower the sheet receiving device that receives the resin sheet, thereby stretching the resin sheet being extruded downward from the die downward in a downward direction to make it thinner.

[0011] According to the method for setting up the resin sheet extrusion molding apparatus of the present invention, it is preferable to bring the resin sheet into contact with a cutting device and cut it by relatively moving the die that extrudes the resin sheet from the upper part of the sheet receiving device to the upper part of the roll-type sheet molding machine.

[0012] According to the method for starting up a resin sheet extrusion molding apparatus of the present invention, it is preferable to use a cover provided on the molding apparatus to prevent the cut and removed portion of the resin sheet from adhering to the molding rolls of the molding apparatus.

[0013] According to the method for setting up a resin sheet extrusion molding apparatus of the present invention, it is preferable to use a lead film that has been reinforced in the sheet feeding direction in a roll-type sheet molding machine.

[0014] The present invention provides a manufacturing apparatus for sheet-shaped resin products. An extrusion apparatus equipped with a die for extruding molten resin into a sheet, It has a roll-type sheet molding machine that forms the extruded resin sheet into a sheet-like product, The roll-type sheet molding machine is characterized in that it is a lead film to which a feed mechanism is provided by the rotation of the molding rolls in the sheet molding machine, and that the lead film for which a resin sheet is attached, which has been received into the roll-type sheet molding machine, can be set in advance.

[0015] According to the manufacturing apparatus for sheet-shaped resin products of the present invention, A sheet receiving device that receives resin sheets that are unsuitable for paper feeding as extruded from the die, The device includes a cutting device for cutting and removing the resin sheet received by the sheet receiving device, The die is configured to be relatively movable from the upper part of the sheet receiving device to the upper part of the roll-type sheet forming machine. The roll-type sheet forming machine preferably receives the remaining part of the resin sheet after the portion unsuitable for paper passage in the resin sheet is cut off and removed by the cutting device.

[0016] According to the manufacturing apparatus for a sheet-shaped resin product of the present invention, the sheet receiving device preferably processes the resin sheet extruded downward from the die so as to be stretched downward and thinned by descending while receiving the resin sheet.

[0017] According to the manufacturing apparatus for a sheet-shaped resin product of the present invention, the cutting device is preferably arranged at a position where the extruded resin sheet contacts while the die moves relatively from the upper part of the sheet receiving device to the upper part of the roll-type sheet forming machine.

[0018] According to the manufacturing apparatus for a sheet-shaped resin product of the present invention, the forming device preferably has a cover for preventing the cut-off portion of the resin sheet from adhering to the forming roll of the forming device.

[0019] According to the manufacturing apparatus for a sheet-shaped resin product of the present invention, the roll-type sheet forming machine preferably can be set in advance with a lead film reinforced in the sheet feeding direction in the sheet forming machine.

Advantages of the Invention

[0020] According to the present invention, the start-up of the extrusion molding process of the resin sheet can be easily and safely performed without requiring manual labor.

Brief Description of the Drawings

[0021] [Figure 1] It is a front view of the manufacturing apparatus for a sheet-shaped resin product according to an embodiment of the present invention for explaining the start-up method of the extrusion molding apparatus for a resin sheet according to the embodiment of the present invention. [Figure 2] It is a diagram showing the next step of FIG. 1. [Figure 3] It is a diagram showing the next step of FIG. 2. [Figure 4] It is a diagram showing the next step of FIG. 3. [Figure 5] It is a perspective view showing a three-dimensional structure corresponding to the main part of FIG. 1. [Figure 6] It is a diagram showing the next step of FIG. 5. [Figure 7] It is a diagram showing the next step of FIG. 6. [Figure 8] It is a diagram showing the next step of FIG. 7. [Figure 9] It is a diagram showing the next step of FIG. 8. [Figure 10] It is a perspective view showing the overall structure of the manufacturing apparatus for the sheet-shaped resin product according to the embodiment of the present invention. [Figure 11] It is a diagram showing another configuration example of the manufacturing apparatus for the sheet-shaped resin product according to the embodiment of the present invention.

Embodiments for Carrying Out the Invention

[0022] The manufacturing apparatus for the sheet-shaped resin product shown in FIGS. 10 and 4 includes an extrusion device 11 that melts and kneads resin and then extrudes it into a sheet shape, a molding device 14 that forms a sheet-shaped product by passing the resin sheet 12 extruded from the extrusion device 11 through a roll-type sheet forming machine 23, and a winding device 15 that winds up the obtained sheet-shaped product into a roll, which is shown only in FIG. 10. Instead of the winding device 15, a cutting machine that cuts the sheet into single sheets can also be provided. The resin sheet 12 mentioned here is not limited to being sheet-shaped as long as it is flexible, and includes film-shaped ones or those in which they are laminated.

[0023] The extrusion apparatus 11 includes an extruder 17 for melting and kneading the molding resin, a transfer device 18 such as a gear pump for transferring the molten resin extruded from the extruder 17 downstream, and a die 19 for extruding the molten resin downward in a sheet-like manner from the transfer device 18. The extruder 17 is equipped with a vacuum pump 20, as shown in Figure 4, for degassing the molten and kneaded resin to remove air bubbles. Note that if degassing is not required, the vacuum pump 20 may be omitted.

[0024] The molding apparatus 14 is configured to reciprocate in a horizontal direction 21, which is the same direction in which the resin sheet 12 shown in Figure 10 is transported during the molding process. This mobile molding apparatus 14 includes the aforementioned roll-type sheet molding machine 23 for molding the resin sheet 12 extruded from the die 19 to obtain a sheet-shaped product, a sheet receiving device 24 for receiving the resin sheet 12 immediately after the start of resin extrusion from the die 19 when its properties are not yet stable, a cutting device 25 that acts on the resin sheet 12 that has been extruded from the die 19 and whose properties have become stable to cut and remove any parts of the resin sheet 12 whose properties were not yet stable, and a cover 26 provided near the cutting device 25.

[0025] The detailed structure of the molding apparatus 14 will be explained with reference to Figures 4 and 5. The mobile molding apparatus 14 consists of a mobile carriage 27, on which a sheet molding machine 23, a sheet receiving device 24, a cutting device 25, and a cover 26 are mounted. In other words, the sheet molding machine 23, the sheet receiving device 24, the cutting device 25, and the cover 26 can move back and forth as a single unit.

[0026] The sheet molding machine 23 has multiple molding rolls 28 around which the resin sheet is wound, and processes the resin sheet 12 extruded from the die 19 into a sheet-like product. The attached diagram illustrates a configuration in which the first molding roll 28a, the second molding roll 28b, and the third molding roll 28c are arranged in that order. The number of molding rolls can be arbitrarily set according to the specifications of the sheet to be molded. For example, a configuration with only one molding roll is also possible.

[0027] The sheet receiving device 24 includes a receiving table 29 for receiving the portion 37 of the resin sheet 12 from the die 19 that is still unstable in properties immediately after the start of extrusion. The receiving table 29 can have any configuration as long as it is capable of receiving the resin sheet 12. In particular, it is preferable to provide a fall prevention fence, or screen-like structure, around the periphery of the receiving table 29 to prevent the resin sheet 12 from falling laterally from the receiving table 29. The receiving table 29 is configured to be raised and lowered by a lifting device 30 shown in Figure 4.

[0028] The cutting device 25 and the cover 26 will be described in detail. As shown in Figure 5, the movable carriage 27 of the molding device 14 is provided with vertically oriented support arms 32. A plate-shaped cover 26 is supported by one or more support arms 32. This cover 26 is provided between the support base 29 and the first molding roll 28a to cover the first molding roll 28a, thereby preventing the resin sheet 12 extruded from the die 19, particularly the portion 37 of the resin sheet 12 whose properties are not yet stable, from adhering to the molding roll 28, especially the first molding roll 28a.

[0029] The cover 26 is installed at an angle downward toward the support base 29 of the sheet receiving device 24. This configuration allows the cover 26 to receive the resin sheet 12 from above, particularly the portion 37 that has been cut and removed and whose properties are not yet stable, and then slide it down toward the support base 29. The surface of the cover 26 preferably has irregularities that reduce the contact area with the resin sheet 12 in order to enable good sliding. In other words, the cover 26 preferably has a surface structure similar to that of so-called checkered steel plate, in which case, the present invention will exhibit a sliding improvement effect based on the reduction of the contact area described above, which is the opposite of the anti-slip effect of general checkered steel plate. In addition, the cover 26 can be provided with appropriate means to improve sliding properties and heat resistance. For example, fluorine coating or ceramic coating is preferable.

[0030] As described above, the cutting device 25 is for cutting and removing the unstable portion 37 of the resin sheet 12 being extruded from the die 19. The cutting device 25 can be configured in any way that achieves this purpose. The illustrated cutting device 25, as shown in detail in Figure 5, consists of a linear sheath heater installed slightly above the cover 26, and is designed to heat the resin sheet 12, thereby melt-cutting the resin sheet 12 in its width direction. In this case, by cutting the resin sheet 12 by melt-cutting, it is possible to easily cut the resin sheet 12, which is flexible at high temperatures, without applying mechanical force. At that time, since the resin sheet 12 is processed to become thinner by downward stretching based on the lowering of the support base 29 by the lifting device 30, it is possible to cut, or melt-cut, the resin sheet 12 even more easily than when the resin sheet 12 is originally thick.

[0031] As shown in Figures 1 and 5, a lead film 34 is pre-set in the sheet molding machine 23 to start the resin sheet extrusion molding process. The lead film 34 is used to guide the high-temperature resin sheet 12 extruded from the die 19 into the sheet molding machine 23. For this reason, it is preferable that the lead film 34 is made of the same resin as the resin sheet 12 or a resin compatible with the resin sheet 12.

[0032] As shown in Figure 5, the lead film 34 is accompanied by a reinforcing material 35 to reinforce it. The reinforcing material 35 is for reinforcing the lead film 34 in the feeding direction of the resin sheet 12 in the sheet molding machine 23, and can be made of, for example, heat-resistant tape or flame-retardant cloth attached to the lead film 34 in the longitudinal direction. The heat resistance requirement is that it does not melt or soften at the melting point temperature of the resin that makes up the resin sheet 12. In other words, it is necessary that it is made of a resin with a higher melting point or a higher softening point than the resin that makes up the resin sheet 12. In the illustrated example, three strips of tape-like reinforcing material 35 are attached to the lead film 34 along the width direction of the lead film 34, spaced apart from each other.

[0033] The means for reinforcing the lead film 34 in the feeding direction of the resin sheet 12 may be configured in ways other than those described above. For example, both sides of the lead film 34 along the feeding direction of the resin sheet 12 may be molded to be thicker, or both sides of the lead film 34 may be folded so that they are doubled.

[0034] Next, the method for setting up the extrusion molding apparatus for the resin sheet 12 will be described in detail. First, as shown in Figures 1 and 5, the lead film 34 reinforced with reinforcing material 35 is set in the sheet molding machine 23. Specifically, the lead film 34 is pulled out to a predetermined length from the roll 36 shown in Figure 1 and wound around the molding roll 28 in the sheet molding machine 23 along the same path as the resin sheet 12 that is supplied to and molded in the sheet molding machine 23.

[0035] The lead film 34 can be set up to be guided to the sheet molding machine 23, but the configuration for guiding it is arbitrary. For example, a string-like pulling member that pulls the lead film 34 may be connected to the downstream side of the lead film 34. In this case, the string-like pulling member is wrapped around the molding roll 28. The lead film 34 just needs to be positioned so that it reaches the position where the resin sheet 12 is supplied when the resin sheet 12 is supplied to the molding roll 28.

[0036] Then, the extrusion device 11 is started to begin downward extrusion of the molten resin sheet 12 from the die 19. At this time, the molding device 14 is moved so that the support base 29 of the sheet receiving device 24 is positioned directly below the die 19, as shown in Figures 1 and 5. As a result, the portion 37 of the resin sheet 12 that has been extruded downward from the die 19 and whose properties are not yet stable immediately after the start of extrusion, that is, the portion that is not suitable for feeding into the sheet molding machine 23, is received by the support base 29.

[0037] Here, a state suitable for paper feeding refers to a state in which molten resin is being discharged from the entire width of the die 19. A state unsuitable for paper feeding refers to a state in which resin is being discharged from only a part of the width of the die 19, or a state in which the resin is being discharged from the die while containing a significant amount of air or moisture, resulting in a state in which the sheet has countless holes.

[0038] Next, the movable carriage 27 of the molding apparatus 14 is moved in a direction that brings the cover 26 closer to the resin sheet 12. Then, as shown in Figure 6, the resin sheet 12, which had previously been descending directly from the die 19 to the support base 29 of the sheet receiving apparatus 24, is temporarily received by the cover 26, as shown in the figure.

[0039] At this time, the molding apparatus 14 is moved further by the mobile trolley 27. Simultaneously, the support base 29 is lowered by the lifting device 30. As a result, the resin sheet 12 being extruded from the die 19 is pulled downward and stretched, and its thickness is reduced. In this state, as shown in Figures 2 and 7, the high-temperature cutting device 25, which is composed of a sheath heater, comes into contact with the resin sheet 12 and melts and cuts the resin sheet 12 in the width direction. As a result, the portion 37 of the resin sheet 12 whose properties are not yet stable immediately after the start of extrusion is guided by the downward-sloping cover 26, and the entire portion falls towards the support base 29 of the sheet receiving device 24, sliding off the cover 26, and is caught by the support base 29. At this time, because the cover 26 is provided, it is effectively prevented that the portion 37 whose properties are not yet stable will come into contact with the molding roll 28 and enter the sheet molding machine 23. As a result, only the portion of the resin sheet 12 whose properties have stabilized remains directly below the die 19.

[0040] The timing of the lowering of the support stand 29 can be changed as appropriate; it may be lowered before or after the movement of the molding apparatus 14. Furthermore, for example, if the resin material or properties make it easily cut, the resin sheet 12 can be cut without lowering the support stand 29.

[0041] As shown in Figure 8, the remaining resin sheet, as described above, separates from the cover 26 as the molding apparatus 14 moves further and adheres to and integrates with the lead film 34 that was wrapped around the first molding roll 28a. At this time, if the sheet molding machine 23 is started and the molding roll 28 is rotated, the integrated lead film 34 and resin sheet 12 are supplied together between the first molding roll 28a and the second molding roll 28b of the sheet molding machine 23, as shown in Figures 3 and 9.

[0042] Depending on the resin material, if the resin sheet 12 can be formed in a state suitable for paper feeding immediately after the start of extrusion, the resin sheet 12 immediately after the start of extrusion can be directly supplied to the lead film 34 set in the roll-type sheet molding machine 23, instead of the method described above.

[0043] Then, after stopping the movement of the molding device 14, the lead film is cut by appropriate means near the roll 36. After that, only the resin sheet 12 supplied from the die 19 is fed into the sheet molding machine 23, and sheet-shaped products are continuously formed. The formed sheet-shaped products are wound into a roll by the winding device 15. The lead film 34 may be prepared in a predetermined length without being cut and allowed to flow through completely. As described above, the resin sheet 12 is not limited to sheet form as long as it is flexible, and includes film form or laminated forms thereof. In this way, the resin sheet extrusion molding machine can be started up smoothly and safely simply by operating the device, without requiring a large number of people.

[0044] Each of the above-mentioned devices may have a different configuration as long as it can implement the method for starting up the resin sheet extrusion molding apparatus of the present invention, and any other suitable configuration besides the specific configuration described above may be included in the manufacturing apparatus for sheet-like resin products of the present invention.

[0045] Figure 11 shows a modified example of the sheet molding machine 23. The sheet molding machine 23 shown in Figure 11 has an air knife 39 and a guide roll 40 instead of the first molding roll 28a described above. The guide roll 40 transports the lead film 34 along a predetermined path, and the lead film 34 receives the resin sheet 12 from the die 19, thereby preventing the resin sheet 12 from adhering to unwanted areas in the sheet molding machine 23. Subsequently, the resin sheet 12 is pressed against the second molding roll 28b by the air knife 39 and molded. In this case, in order to reliably prevent the resin sheet 12 from adhering to unwanted areas in the sheet molding machine 23, it is preferable to install the guide roll 40 that guides the lead film 34 above the air knife 39, as shown in the figure.

[0046] Furthermore, devices such as air chambers and peening devices can be installed as equipment that performs the same function as the air knife described above. Alternatively, in some cases, it is possible to configure the system without using these devices and without installing the first molding roll 28a. In that case, it is preferable to use guide rolls similar to those described above to prevent the molten resin, i.e., the resin sheet 12, from coming into contact with the equipment installed in the sheet molding machine 23, and to pass the lead film 34 through it.

[0047] In addition, as an alternative configuration, the cutting device for cutting the resin sheet 12 may be installed in the roll-type sheet molding machine 23 as described above, or it may be configured to move independently of the sheet molding machine 23. Alternatively, the die 19 may move without the cutting device moving. Preferably, the cutting device is arranged across the entire width of the sheet in a direction substantially perpendicular to the direction in which the resin sheet 12 is extruded.

[0048] As a variation of the cutting device 25, for example, a cutting blade may be provided on the upper part of the cover 26 that contacts the resin sheet 12 when it approaches it in the width direction of the resin sheet 12. The cutting blade does not have to be sharp, and it may be a structure that allows the edge of the cover to be bent in the width direction of the resin sheet. Alternatively, a mechanism may be provided in which the cutting blade slides in the width direction of the resin sheet directly below the die 19.

[0049] Furthermore, although the above description explains a configuration in which the molding device 14 is configured as a mobile trolley 27 and the sheet receiving device 24 can move horizontally together with the molding device 14, this is not the only configuration. For example, if a pit is dug in the floor and the sheet receiving device is installed there, and the sheet receiving device is lowered and stored so that it is hidden below the sheet molding machine 23 when the resin is being cut, then lateral movement of the sheet receiving device is unnecessary.

[0050] The roll-type sheet forming machine 23 and the die 19 only need to be able to move relative to each other, and at least one of them needs to be able to move. The sheet receiving device 24 only needs to be positioned so as not to interfere with other devices, and may or may not be moved.

[0051] Depending on the resin material, if the resin sheet 12 can be formed in a state suitable for paper feeding immediately after the start of extrusion, this resin sheet 12 can be directly supplied to the lead film 34 set in the roll-type sheet molding machine 23. [Explanation of symbols]

[0052] 11 Extruder 12 Resin Sheets 14 Molding equipment 19 Die 23 Sheet forming machine 24 Sheet receiving device 25 Cutting device 26 Cover 27 Mobile cart 28 forming rolls 29. Support stand 30 Lifting device 34 Lead film 35 Reinforcement material 37. Parts with unstable properties

Claims

1. When extruding molten resin into a sheet from the die of an extrusion device, and passing the extruded resin sheet through a roll-type sheet molding machine in a molding device to form a sheet-shaped product, The sheet receiving device receives the resin sheets that are unsuitable for paper feeding as they are extruded from the die. By lowering the sheet receiving device that receives the resin sheet, the resin sheet being extruded downward from the die is stretched downward and processed to become thinner. The resin sheet received by the sheet receiving device is cut and removed, and the remaining portion of the resin sheet after cutting is guided to the sheet molding machine. A method for setting up a resin sheet extrusion molding apparatus, characterized in that a lead film, which is fed by the rotation of the molding rolls in the roll-type sheet molding machine, is set in advance in the roll-type sheet molding machine, and a resin sheet guided to the sheet molding machine is attached to the lead film.

2. When extruding molten resin into a sheet from the die of an extrusion device, and passing the extruded resin sheet through a roll-type sheet molding machine in a molding device to form a sheet-shaped product, A lead film, which is fed by the rotation of the molding rolls in the aforementioned roll-type sheet molding machine, is set in advance, and the resin sheet guided to the sheet molding machine is attached to the lead film. A method for setting up a resin sheet extrusion molding apparatus, characterized by moving the die that extrudes the resin sheet from the upper part of a sheet receiving device to the upper part of a roll-type sheet molding machine, thereby bringing the resin sheet into contact with a cutting device and cutting it.

3. When extruding molten resin into a sheet from the die of an extrusion device, and passing the extruded resin sheet through a roll-type sheet molding machine in a molding device to form a sheet-shaped product, A lead film, which is fed by the rotation of the molding rolls in the aforementioned roll-type sheet molding machine, is set in advance, and the resin sheet guided to the sheet molding machine is attached to the lead film. A method for starting up an extrusion molding apparatus for resin sheets, characterized in that a cover provided on the molding apparatus prevents the cut and removed portion of the resin sheet from adhering to the molding rolls of the molding apparatus.

4. When extruding molten resin into a sheet from the die of an extrusion device, and passing the extruded resin sheet through a roll-type sheet molding machine in a molding device to form a sheet-shaped product, A lead film, which is fed by the rotation of the molding rolls in the aforementioned roll-type sheet molding machine, is set in advance, and the resin sheet guided to the sheet molding machine is attached to the lead film. A method for setting up a resin sheet extrusion molding apparatus, characterized by using a reinforcing lead film along the sheet feeding direction in a roll-type sheet molding machine.

5. An extrusion apparatus equipped with a die for extruding molten resin into a sheet, A roll-type sheet molding machine that forms an extruded resin sheet into a sheet-like product, A sheet receiving device that receives resin sheets that are unsuitable for paper feeding as extruded from the die, The device includes a cutting device for cutting and removing the resin sheet received by the sheet receiving device, The die is configured to be movable relative to the upper part of the sheet receiving device from the upper part of the roll-type sheet forming machine. The aforementioned roll-type sheet molding machine receives the portion of the resin sheet that remains after the portion unsuitable for paper feeding has been cut and removed by the cutting device. A roll-type sheet molding machine is a manufacturing apparatus for sheet-shaped resin products, characterized in that it can pre-set the lead film, which is fed by the rotation of the molding rolls in the sheet molding machine, and which is received into the roll-type sheet molding machine for attaching a resin sheet.

6. The sheet receiving device is characterized in that it lowers while receiving the resin sheet, thereby stretching the resin sheet being extruded downward from the die downwards and processing it to make it thinner, as described in claim 5.

7. The apparatus for manufacturing sheet-like resin products according to claim 5 or 6, characterized in that the cutting device is positioned at a location where the extruded resin sheet comes into contact with the die as the die moves relative to the upper part of the sheet receiving device from the upper part of the roll-type sheet molding machine.

8. An extrusion apparatus equipped with a die for extruding molten resin into a sheet, The molding apparatus includes a roll-type sheet molding machine for forming an extruded resin sheet into a sheet-like product, A roll-type sheet molding machine is a lead film that is fed by the rotation of the molding rolls in this sheet molding machine, and the lead film for which a resin sheet is attached, which is received into this roll-type sheet molding machine, can be set in advance. A manufacturing apparatus for sheet-shaped resin products, characterized in that the molding apparatus has a cover to prevent the cut-off portion of the resin sheet from adhering to the molding roll of the molding apparatus.

9. An extrusion apparatus equipped with a die for extruding molten resin into a sheet, It has a roll-type sheet molding machine that forms the extruded resin sheet into a sheet-like product, A roll-type sheet molding machine is a lead film that is fed by the rotation of the molding rolls in this sheet molding machine, and the lead film for which a resin sheet is attached, which is received into this roll-type sheet molding machine, can be set in advance. A roll-type sheet molding machine is a manufacturing apparatus for sheet-shaped resin products, characterized in that it can pre-set a lead film that has been reinforced in the sheet feeding direction in the sheet molding machine.

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