JP7305986B2 - Molding system and resin sheet continuous supply method - Google Patents

Description

The present invention relates to a molding system for continuously molding molded articles from a resin sheet delivered from a raw roll and a resin sheet continuous supply method for continuously supplying a resin sheet to a molding apparatus.

At present, resin sheets are used as means for supplying resin materials in molding lines for molding resin moldings such as containers for storing food, beverages, electrical parts, daily necessities, pharmaceuticals, etc., and lids for these containers. A raw fabric roll wound into a roll is used, and a resin molded product is continuously molded.

Since the length of the resin sheet on the raw fabric roll is naturally finite, the remaining resin sheet on the raw fabric roll during operation is eliminated in order to carry out molding over a long period of time without stopping the molding line. In this case, the end portion of the resin sheet and the beginning portion of the resin sheet on a new original roll are spliced together.

The operation of connecting the resin sheets is performed, for example, by an operator joining the end portion of the resin sheet on the original roll in operation and the beginning portion of the resin sheet on the new original roll with a connecting tape. there is
Since such a work of connecting the resin sheets must be performed without stopping the conveyance of the resin sheets, the worker is required to perform the work quickly. In addition, in the work of connecting resin sheets, if the length of the spliced portion becomes long, a high-quality molded product cannot be obtained from the spliced portion, and the amount of the resin sheet that is wasted increases.
In this way, in the work of connecting the resin sheets, it is necessary to make the length of the spliced portion as small as possible while ensuring a reliable connected state, and the work must be done quickly. There was a problem that the burden was heavy.

In order to solve such a problem, a sheet splicing device that automatically joins resin sheets has been proposed (see, for example, Patent Document 1). However, the actual situation is that the conventional sheet splicing device is relatively large and mechanically complicated.

JP-A-2000-191191

Therefore, if the end portion of the resin sheet on the winding core side is curled, the connecting work itself becomes difficult. In such a case, after confirming that the end of the resin sheet being conveyed is fed into the molding device (mold), the molding line is temporarily stopped, and the beginning of the resin sheet on the new raw roll is molded. There is a problem that the worker is forced to manually feed the material into the apparatus, which lowers the productivity.
Such a problem becomes conspicuous when the thickness of the resin sheet is 1.2 mm or more, for example.

INDUSTRIAL APPLICABILITY The present invention solves the above-described problems, and enables resin sheets to be connected without stopping the molding line even when the resin sheets are thick, thereby achieving high productivity. It is an object of the present invention to provide a molding system and a resin sheet continuous supply method capable of reducing the amount of resin sheets that are produced and wasted, and that can reduce the work load.

The molding system of the present invention includes a resin sheet supply unit having a first raw roll, and a set amount of slack is formed in the resin sheet conveying path in the resin sheet fed from the first raw roll. A resin sheet conveying unit that intermittently conveys the resin sheet in a folded state, and a molding processing unit that molds a predetermined molded body from the resin sheet. Than the first holding unit where the first raw roll is arranged A second holding portion in which a second original roll is arranged is provided at a position on the rear side of the resin sheet in the conveying direction , and the second holding portion is provided at a position on the rear side of the resin sheet in the conveying direction of the second holding portion. A resin sheet straightening device is arranged for straightening the winding peculiarity of the end portion of the resin sheet on the core side of the first raw roll, and the resin sheet straightening device corrects the direction in which the resin sheet is conveyed relative to the second holding portion. The above problem is solved by configuring the arrangement position to be adjustable .

The resin sheet continuous supply method of the present invention is a method of continuously supplying a resin sheet to a molding processing section, and is intermittently conveyed in a state in which the resin sheet is unwound from the first original roll and slack is formed in the conveying path. and a second original roll arranged at a position on the rear side in the conveying direction of the preceding resin sheet relative to the first holding portion where the first original roll is arranged. a resin sheet connecting step of connecting the preceding resin sheet with a succeeding resin sheet, and in the resin sheet connecting step, the preceding resin sheet is pulled back within the range of the slack amount on the conveying path formed in the preceding resin sheet, and the preceding resin sheet is pulled back; The end portion of the core side of the resin sheet is set in a resin sheet straightening device arranged at a position on the rear side in the conveying direction of the preceding resin sheet from the second holding portion where the second original roll is arranged. a curl correction process for correcting the curl of the core-side terminal end portion of the preceding resin sheet; is performed while intermittently conveying the preceding resin sheet, and when performing the curl correction process, the resin sheet correcting device is moved to the second holding unit. The above problem is solved by adjusting the arrangement position of the preceding resin sheet in the conveying direction .

According to the molding system of the present invention and the resin sheet continuous supply method of the present invention implemented in the molding system, the slack of the resin sheet intentionally formed in the conveying path functions as a so-called buffer, and the curl correction device functions as a buffer. By installing at a specific position with respect to the raw fabric roll, the amount of the resin sheet that is intermittently conveyed during the connecting operation of the resin sheet is compensated. Therefore, without stopping the molding line, the curly curl of the resin sheet can be corrected, and the connection work with the resin sheet in the new original roll can be reliably performed. Therefore, high productivity can be obtained, and even when a resin sheet having a large thickness is used, an increase in the amount of wasted resin sheets can be avoided, and the work load on the operator can be reduced. can be avoided from increasing.

According to the molding system of claim 2 and the resin sheet continuous supply method of claim 6, the end portion of the core side of the resin sheet is inserted into the resin sheet straightening device from above in the vertical direction. As a result, the end portion of the resin sheet on the winding core side can be easily and reliably set between the pair of heating and pressurizing members, and the operation of connecting the resin sheet can be performed more reliably.

According to the molding system of claim 3 and the resin sheet continuous supply method of claim 7, since the arrangement position of the resin sheet correction device is not fixed at a fixed position, the intermittent conveyance of the resin sheet is continued. A high degree of freedom can be obtained in performing the curl correcting process while performing the process, and the connecting work of the resin sheets can be performed more reliably.

According to the molding system according to claim 4 and the resin sheet continuous supply method according to claim 8, it is possible to avoid unexpected accidents in the resin sheet connection work, and it is highly usable. You can get safety.

It is a figure showing roughly composition in an example of a molding system of the present invention. 1 is a perspective view showing a configuration of an example of a resin sheet correction device of the present invention; FIG. FIG. 3 is a plan view schematically showing the configuration of the resin sheet straightening device shown in FIG. 2; FIG. 3 is a front view schematically showing the configuration of the resin sheet correction device shown in FIG. 2; FIG. 3 is a right side view schematically showing the configuration of the resin sheet straightening device shown in FIG. 2; FIG. 4 is a conceptual diagram schematically showing a state in which the resin sheet of the first raw roll has run out. FIG. 10 is a conceptual diagram schematically showing a state in which the core-side end portion of the preceding resin sheet is set in the curl correction device in the resin sheet connecting step; FIG. 10 is a conceptual diagram schematically showing a state in which the core-side terminal end portion of the preceding resin sheet is being subjected to curl correction processing in the resin sheet connecting step; FIG. 10 is a conceptual diagram schematically showing a state in which the core-side terminal end of the preceding resin sheet and the starting end of the succeeding resin sheet are joined together in the resin sheet connecting step; FIG. 2 is a conceptual diagram schematically showing an example of a method of joining a preceding resin sheet and a succeeding resin sheet; FIG. 10 is a conceptual diagram schematically showing a state in which the second original roll is transferred to the first holding portion in the resin sheet connecting step;

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described based on the drawings.
FIG. 1 is a diagram schematically showing the configuration of an example of the molding system of the present invention.
The molding system 100 of this embodiment continuously molds a resin cup-shaped container M, and includes a resin sheet supply section 110, a resin sheet conveying section 120, a resin sheet heat processing section 130, and a molding process. It includes a section 140 and a trimming processing section 150 .

The resin sheet supply unit 110 has a first holding unit 111 and a second holding unit 115 that hold an original roll formed by winding a resin sheet in a roll shape. The resin sheet of the original fabric roll 112 is supplied toward the molding processing section 140 .
The second holding part 115 holds a new resin sheet (hereinafter referred to as "subsequent resin sheet") connected to the resin sheet (hereinafter referred to as "preceding resin sheet") W1 fed out from the first material roll 112. It is for holding the second original roll 116 that supplies W2, and is located outside the first holding portion 111 in the conveying direction of the preceding resin sheet W1 , i.e., the resin sheet preceding the first holding portion 111. It is arranged at a position on the rear side of W1 in the transport direction . Hereinafter, the preceding resin sheet W1 of the first material roll 112 and the succeeding resin sheet W2 of the second material roll 116 are simply referred to as resin sheets unless otherwise specified.

Various materials can be applied as the resin material constituting the resin sheet, and the sheet may be a single layer or a sheet having a laminated structure. Particularly when the contents are sensitive to oxygen, a sheet having a laminated structure in which an inner layer and an outer layer made of a thermoplastic resin are laminated with an intermediate layer having a gas barrier property sandwiched therebetween is suitable.
In the present invention, any thermoplastic resin material can be used, for example, olefin resin, styrene resin, vinyl chloride resin, vinylidene chloride resin, polyester resin, polyamide resin, etc. More than one species can be used in combination. Among these, olefinic resins are advantageous for the molding method of the present invention. As olefinic resins, the main constituent monomer is composed of olefin and is crystalline. Density polyethylene, ethylene-alpha olefin copolymers, isotactic polypropylene, propylene-ethylene block or random copolymers can be used.
Although the olefin resin can be used alone, it is preferable to use it in combination with an oxygen barrier resin in terms of preservability of contents. As the barrier resin, ethylene-vinyl alcohol copolymer, polyamide resin, vinylidene chloride resin, etc. are used.
In addition to the intermediate layer, a second intermediate layer made of a resin having a carbon-carbon double bond such as polybutadiene or polyisoprene or a resin layer containing an oxygen absorber such as reducing iron powder is provided. may be provided.

The resin sheet conveying unit 120 includes a plurality of conveying rollers 121 and is configured to intermittently convey the resin sheet with a predetermined amount of slack 125 formed in the conveying path. In FIG. 1, only two conveying rollers 121 are shown for convenience, but the number and arrangement positions of the conveying rollers 121 are not particularly limited.
The slack amount of the resin sheet is not particularly limited as long as it is long enough to perform the resin sheet connection process while the resin sheet is continuously conveyed. can be set.

The resin sheet heating section 130 includes heating means for heating and softening the resin sheet. The heating means in this embodiment is, for example, a pair of heating means which are arranged at positions separated from each other in the vertical direction so as to face each other and heat the resin sheet from the upper surface side and the lower surface side. A planar heater 131 is provided.

The molding processing unit 140 is configured to perform so-called multi-piece manufacturing, in which a large number of containers are molded at once from a resin sheet of a predetermined length, for example. and an upper mold (male die) 141 having a plurality of plugs 146 for pressing and narrowing the resin sheet softened by heating into the corresponding cavities 142 of the lower mold 141. type) 145.
The lower mold 141 is provided with micro-pressure air supply passages (not shown) for supplying and discharging micro-pressure air into each cavity 142 .
Each plug 146 has the contour of a final compact for shrink shaping a stretched and heat set resin sheet.

The trimming processing unit 150 includes a punching device 151 for punching a resin sheet to obtain a cup-shaped container M. As shown in FIG.

In the molding system 100 described above, the first holding portion 115 is positioned outside the second holding portion 115 with respect to the resin sheet conveying direction, i.e., at a position rearward of the second holding portion 115 in the resin sheet conveying direction. A resin sheet straightening device 160 is arranged to straighten the winding peculiarity of the end portion E of the leading resin sheet W1 of the raw fabric roll 112 on the core side. A configuration example of the resin sheet correction device 160 is shown in FIGS. 2 to 5. FIG.

This resin sheet correction device 160 includes a base 161 having a substantially rectangular parallelepiped shape as a whole.
The base 161 is a pair of rectangular frames arranged vertically with openings facing each other at positions spaced apart by a predetermined distance in one direction (hereinafter, the one direction is defined as the “X direction”). It is composed of a shaped side frame 162 and an upper connecting frame 163 and a lower connecting frame 164 connecting the side frames 162 .
The upper connecting frame 163 is arranged in the X direction at both ends of the upper frame portion of each side frame 162 in the length direction (the direction orthogonal to the X direction in the horizontal plane, hereinafter defined as the “Y direction”). It is fixed in a horizontally extending position. The lower connecting frame 164 is fixed to each of the longitudinal ends of the lower frame portion of each side frame 162 in a posture extending horizontally in the X direction.
Two reinforcing frames 165 extending parallel to each other are fixed to the upper connecting frame 163 at positions separated from each other in the one direction.
A support frame 166 that supports the hot press means 170 is fixed to the reinforcement frame 165 . The support frame 166 has a U-shape as a whole, and includes support portions 167 erected on the upper surface of the reinforcing frame 165 so as to extend in the vertical direction, and upper ends of the support portions 167 connected to the above-described support frame 167 . and a horizontal rod portion 168 extending horizontally in one direction.

The hot press means 170 is supported and fixed on the front side of the horizontal rod portion 168 in the support frame 166 . The hot press means 170 includes a pair of heating and pressurizing members 171a and 171b having a flat pressure contact surface 172, a pair of holding members 173 for holding and fixing the respective heating and pressurizing members 171a and 171b, and a pair of holding members 173. , and a drive mechanism 178 for driving the pair of heating and pressurizing members 171a and 171b in directions separating and contacting each other.

The heating and pressurizing members 171a and 171b are composed of, for example, heating plates containing electric heaters (not shown). The pair of heating and pressurizing members 171a and 171b are fixed to the holding member 173 with the pressure contact surfaces 172 facing each other and extending parallel to the XY plane. is inserted between the pair of heating and pressurizing members 171a and 171b from above in the Z direction.
The dimensions of the pressure contact surface 172 may be set according to the length region of the end portion E where the resin sheet is curled.

Each holding member 173 has a dimension in the X direction larger than that of the heating and pressurizing members 171a and 171b, and holds the heating and pressurizing members 171a and 171b at substantially the center in the X direction.
Mounting plates 176 of guide shafts 175 are fixed to the respective holding members 173 at both ends in the Y direction of the heating/pressurizing member holding surface 174 so as to protrude upward in the Z direction and downward in the Z direction with respect to the holding members 173 . there is The guide shaft 175 is provided so that it can move back and forth with respect to the mounting plate 176 in a posture extending horizontally in parallel with each other above and below the holding member 173 .

The drive mechanism 178 is composed of, for example, an air cylinder. In this example, the driving mechanism 178 has the piston rods 179 inserted through notches provided in one of the mounting plates 176 at both ends in the X direction on the back (rear) side of the holding member 173 positioned on the back side. It is provided in a posture extending horizontally in the Y direction. A holding member 173 located on the front side is fixed to the tip of the piston rod 179 .

In this resin sheet correcting device 160, casters 180 are attached to the four corners of the lower surface of the base 161 so as to be movable on the installation surface. That is, the arrangement position of the resin sheet correction device 160 in the molding system is not fixed at a fixed position, and the arrangement position of the resin sheet correction device 160 is appropriately adjusted during the resin sheet connection process. That is, for example, it can be moved in a direction approaching the second holding portion 115 .

An operation plate 185 is provided at the front side position on the upper surface of the base 161, and the operation plate 185 is provided with two operation switches 186 that enable the drive mechanism 178 to operate by being operated simultaneously. It is The actuating switches 186 are spaced apart in the X direction and are therefore configured such that the operator is required to actuate the actuating switches 186 with both hands.

In the molding system 100 described above, the preceding resin sheet W1 fed out from the first material roll 112 is intermittently conveyed in the conveying path with a predetermined amount of slack 125 formed thereon, and the resin sheet heating section 130 , the preceding resin sheet W1 is heated by the planar heater 131 and softened.
Next, in the molding processing section 140, the softened preceding resin sheet W1 is pushed into the cavity 142 of the lower mold 141 by the plug 146 and squeezed. At this time, micro-pressure air is supplied into the cavity 142 from a micro-pressure air supply path provided in the lower mold 141 to generate a slight positive pressure in the space between the preceding resin sheet W1 and the inner circumference of the cavity 142, The leading resin sheet W1 is inflated and wrapped around the plug 146. - 特許庁After that, the fine pressure air supply passage is evacuated, and the squeezed preceding resin sheet W1 is brought into close contact with the inner peripheral surface of the cavity 142 of the lower mold 141 to form a cup shape.
Thereafter, in the trimming processing section 150, the cup-shaped container M can be obtained by punching the preceding resin sheet W1. After that, the preceding resin sheet W<b>1 is collected by the disposal unit 155 .

Therefore, in the molding system 100 described above, as shown in FIG. A resin sheet connecting process is performed to connect the terminal end portion of the sheet W1 on the core side and the starting end portion B of the succeeding resin sheet W2 of the second material roll 116 . As a result, the resin sheet can be continuously supplied, and continuous molding is possible over a long period of time. A method for continuously supplying resin sheets will be described below.

In the resin sheet connecting process step of connecting the core-side end portion E of the preceding resin sheet W1 and the start end portion B of the subsequent resin sheet W2, the curl of the core-side end portion of the preceding resin sheet W1 is corrected. The curl correcting process and the splicing process for joining the core-side end portion of the preceding resin sheet W1 after the curl correcting process and the starting end portion B of the succeeding resin sheet W2 are intermittent conveyance of the preceding resin sheet W1. It is done on an ongoing basis.

In the curl correction process, first, as shown in FIG. 7, the leading resin sheet W1 is pulled back within the length range of the slack 125 formed on the conveying path, and the terminal end portion of the leading resin sheet W1 on the core side is pulled back. E is inserted between the pair of heating and pressurizing members 171a and 171b from above in the Z direction (vertical direction) and set in the resin sheet correction device 160. As shown in FIG.
Next, by simultaneously operating the two operation switches 186, one heating and pressurizing member 171a is driven in a direction approaching the other heating and pressurizing member 171b as shown in FIG. A hot press process is performed for a predetermined time to apply pressure while heating the end portion E on the core side. The processing conditions for the hot press treatment can be set according to the material, thickness, etc. of the resin sheet. For example, when the resin sheet is made of polypropylene and has a thickness of 1.2 mm, the temperature is 130 to 150° C., the pressure is 30 to 50 N/cm ² , and the treatment time is 20 to 40 seconds.
The curl correction process may be performed by moving the resin sheet correction device 160 with the casters 180 while appropriately adjusting the arrangement position. In such a case, the stress acting on the preceding resin sheet W1 can be alleviated by moving the resin sheet straightening device 160 toward the second holding portion 115, for example, thereby hindering the intermittent conveyance of the preceding resin sheet W1. It is possible to reliably perform the curly habit correction process without any trouble.

After the core-side end portion E of the preceding resin sheet W1 is subjected to the curl correction process, the splicing process is performed continuously with the curl correction process, and as shown in FIG. The terminal end portion E and the starting end portion B of the succeeding resin sheet W2 are connected.
The splicing process is performed by splicing the core-side terminal end E of the preceding resin sheet W1 after the curl correction process and the starting end B of the succeeding resin sheet W2 with a connecting tape.

As a method for joining the preceding resin sheet W1 and the succeeding resin sheet W2, for example, as shown in FIG. is attached so as to protrude from the leading edge of the succeeding resin sheet W2, and as shown in FIG. A method of pressing can be mentioned. FIG. 10(b) shows a state in which the trailing end E of the preceding resin sheet W1 on the core side and the leading end B of the succeeding resin sheet W2 are spliced together with a space therebetween. The end portion E on the winding core side of W1 and the start end portion B of the succeeding resin sheet W2 may be butted and spliced together.

After performing the resin sheet connecting process as described above, as shown in FIG. , the resin sheet can be continuously supplied to the molding processing section 140 .

Although one embodiment of the present invention has been described above, the present invention is not limited to the above embodiment, and various modifications can be made.
For example, the present invention is not limited to a molding system that continuously molds cup-shaped containers, but can be applied to any molding system that molds a resin molded body from a resin sheet.
Further, the resin sheet straightening device not only corrects the curl of the preceding resin sheet at the core-side terminal end, but also welds the core-side terminal end of the preceding resin sheet to the starting end of the succeeding resin sheet. It may be configured to be operated under the processing conditions for connection.
The heating and pressurizing member does not have to be a heating plate, and may be a heat roll, for example.
In the process of joining the preceding resin sheet and the subsequent resin sheet, the end portion of the preceding resin sheet after the curl correction process on the core side and the starting end portion B of the succeeding resin sheet W2 are partially overlapped with the connecting tape. You may perform by splicing by.

DESCRIPTION OF SYMBOLS 100... Molding system 110... Resin sheet supply part 111... 1st holding part 112... 1st material roll 115... 2nd holding part 116... 2nd material roll REFERENCE SIGNS LIST 120 Resin sheet conveying section 121 Conveying roller 125 Sagging 130 Resin sheet heat processing section 131 Planar heater 140 Molding processing section 141 Lower mold ( female)
142 ... Cavity 145 ... Upper mold (male mold)
REFERENCE SIGNS LIST 146 ... plug 150 ... trimming section 151 ... punching device 155 ... disposal section 160 ... resin sheet straightening device 161 ... base 162 ... side frame 163 ... upper part Connection frame 164 Lower connection frame 165 Reinforcement frame 166 Support frame 167 Support column 168 Horizontal rod 170 Heat press means 171a, 171b Heat pressurization Member 172 Pressure contact surface 173 Holding member 174 Heating and pressurizing member holding surface 175 Guide shaft 176 Mounting plate 178 Drive mechanism 179 Piston rod 180 · Caster 185 Operation plate 186 Operation switch 190 Coupling tape B Beginning end E Terminating end M Vessel R Joining W1 Preceding Resin sheet W2 ... Subsequent resin sheet

Claims (8)

A resin sheet supply unit having a first raw roll, and a resin sheet fed out from the first raw roll intermittently in a state in which a set amount of slack is formed in the resin sheet conveying path. A resin sheet conveying unit for conveying and a molding processing unit for molding a predetermined molded body from the resin sheet,
A second holding unit in which the second raw roll is arranged is provided at a position on the rear side in the conveying direction of the resin sheet relative to the first holding unit in which the first raw roll is arranged,
A resin sheet correction device for correcting the curl of the end portion of the resin sheet on the core side of the first original roll is disposed at a position on the rear side in the conveying direction of the resin sheet relative to the second holding portion ,
The molding system, wherein the resin sheet correcting device is configured such that an arrangement position of the resin sheet in the conveying direction with respect to the second holding portion is adjustable. The resin sheet straightening device includes a pair of heating and pressurizing members each having a flat pressing surface extending in a vertical direction, the pressing surfaces being arranged to face each other, and at least one or both of the heating and pressurizing members being connected to each other. and a drive mechanism for driving in a contacting/separating direction, and configured such that the core-side end portion of the resin sheet of the first material roll is inserted between the pair of heating and pressurizing members from above in the vertical direction. 2. The molding system of claim 1, wherein: 3. The molding system according to claim 1, wherein the resin sheet straightening device is provided with casters that are movable on an installation surface. The resin sheet straightening device has two operation switches,
3. The molding system of claim 2, wherein the drive mechanism is configured to operate by simultaneously activating the two activation switches. A method for continuously supplying a resin sheet to a molding processing unit,
A preceding resin sheet that is fed out from a first raw roll and intermittently conveyed in a state in which slack is formed in the conveying path, and the preceding resin than the first holding unit where the first raw roll is arranged. a resin sheet connecting step of connecting the succeeding resin sheet wound on the second original fabric roll arranged at the position on the rear side of the sheet in the conveying direction ,
In the resin sheet connecting step,
The preceding resin sheet is pulled back within the range of the slack amount on the conveying path formed in the preceding resin sheet, and the end portion of the preceding resin sheet on the core side is stretched to the second roll on which the second material roll is arranged. 2. A curl correcting process for correcting the curl of the trailing end portion of the preceding resin sheet on the core side by setting the resin sheet in a resin sheet correcting device arranged at a position on the rear side in the conveying direction of the preceding resin sheet relative to the holding portion 2; ,
A splicing process of splicing the core-side end portion of the preceding resin sheet after the curl correction process and the starting end portion of the succeeding resin sheet with a connecting tape continues the intermittent conveyance of the preceding resin sheet. while
The resin sheet continuous supply method, wherein, when performing the curl correction process, the arrangement position of the resin sheet correction device in the conveying direction of the preceding resin sheet with respect to the second holding portion is adjusted. In the curl correcting process, the terminal end of the preceding resin sheet on the core side is inserted from above in the vertical direction between a pair of heating and pressurizing members whose flat pressure contact surfaces extending in the vertical direction face each other. 6. The method of continuously supplying a resin sheet according to claim 5, wherein the leading resin sheet is hot-pressed by the pair of heating and pressurizing members. When performing the curl correction process, the resin sheet correction device is moved by casters provided in the resin sheet correction device to adjust the arrangement position of the resin sheet correction device. 7. The resin sheet continuous supply method according to Item 6. The resin sheet straightening device is provided with two operation switches, and operates to drive at least one or both of the pair of heating and pressurizing members in the direction of separating and contacting each other by simultaneously operating the two operation switches. 7. The resin sheet continuous supply method according to claim 6, wherein is used.

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