JP2010260235A - Embossing system and method for manufacturing workpiece - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an embossing system by which a rugged pattern can be formed on an original roll with excellent transfer efficiency while maintaining production efficiency. <P>SOLUTION: The embossing system 30 is an apparatus for forming the rugged pattern on the original roll 20 by embossing. The embossing system 30 includes a lamination device 40 for laminating a covering layer 28 including a metallic foil on the original roll, an embossing device 50 for embossing a laminate 29 of the original roll and the covering layer 28 and a peeling device 45 for peeling the covering layer from the embossed laminate. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to an embossing system for forming an uneven pattern on an original fabric including a resin layer by embossing, and in particular, an embossing capable of forming an uneven pattern on an original fabric with excellent transfer efficiency while maintaining production efficiency. It relates to the processing system.

  The present invention also relates to a manufacturing method for manufacturing a processed product by forming an uneven pattern on an original fabric including a resin layer by embossing, and in particular, an uneven pattern with excellent transfer efficiency while maintaining the production efficiency of the processed product. The present invention relates to an embossing system that can be formed into a raw material.

  Recently, as shown in Patent Document 1, for example, embossing is a widely used processing method. Patent Document 1 discloses a method for producing a release paper (processed product) by embossing an original fabric. This release paper is used as a paper pattern for producing sheet-like materials such as synthetic leather products, decorative sheets, and interior materials. When producing release paper by embossing, the raw material to be processed includes paper and resin layers in consideration of the durability of the release paper and the gloss of the sheet-like member produced using the release paper. There are many.

JP 2002-205311 A

  However, when embossing is performed on the original fabric, the uneven shape once imparted to the original fabric is gradually flattened. When a processed product made from a raw fabric is used as release paper, when the uneven shape of the release paper is flattened, the depth of the pattern formed on sheet-like materials such as synthetic leather products, decorative sheets, and interior materials becomes shallow. turn into. That is, when the uneven shape of the release paper is flattened, it becomes impossible to transfer the desired uneven shape to the sheet-like material, and it can no longer be used as the release paper.

  Such a defect becomes particularly noticeable when embossing is performed on a raw material including a resin layer having a viscoelastic property. In general, embossing is preferably performed at a low pressure in order to avoid damage to the original fabric. In order to achieve this purpose, the original fabric is heated during embossing. The heated resin layer has a strong viscosity characteristic and can be deformed even at a low pressure. Moreover, although the stress relaxation time can be shortened by heating the resin layer, the stress relaxation time of the resin layer is still not zero. Therefore, if the time during which the embossed mold surface is pressed against the original fabric is short, the original fabric cannot be completely plastically deformed. Then, the resin layer released from the pressure by the embossed mold surface tries to be restored to its original shape due to the elastic property. That is, after the embossed mold surfaces are separated, the uneven shape once imparted to the raw material including the resin layer is gradually flattened.

  In order to avoid the above problems, it is necessary to press the embossing mold surface against the original for a long time when embossing the original. When the embossed mold surface is pressed against the original for a long time, the original made of paper or resin can be firmly plastically deformed. However, according to such a solution, the production efficiency of a processed product obtained by embossing the original fabric is significantly reduced.

  As another solution, it is conceivable to arrange a plurality of embossing apparatuses and perform processing in parallel continuously by a plurality of embossing apparatuses. According to this method, there is a possibility that the concavo-convex shape can be formed in the original fabric with excellent transfer efficiency while maintaining the production efficiency. However, in practice, there is a problem in that the uneven shape formed by each embossing apparatus is displaced due to the elongation of the original fabric. As a result, since the uneven shape formed by each embossing device does not overlap, even a deep uneven shape cannot be produced.

  The present invention has been made in consideration of these points, and is an embossing system for forming an uneven pattern on an original fabric by embossing. The original pattern is formed with excellent transfer efficiency while maintaining production efficiency. It is an object to provide an embossing system that can be formed on the contrary. In addition, the present invention is a manufacturing method for producing a processed product by forming an uneven pattern on an original fabric by embossing, and forming an uneven pattern on an original fabric with excellent transfer efficiency while maintaining the production efficiency of the processed product. It is an object to provide a method for manufacturing a processed product that can be processed.

  A first embossing system according to the present invention is an embossing system for forming a concavo-convex pattern on an original fabric by embossing, a laminating apparatus for superimposing a covering layer and the original fabric, the original fabric and the covering layer An embossing device for embossing the laminate, and the covering layer is formed from a material that has a stress relaxation time shorter than that of the material forming the surface of the original embossed mold surface during embossing. It is characterized by being.

  A second embossing system according to the present invention is an embossing system for forming a concavo-convex pattern on an original fabric by embossing, a laminating apparatus for superimposing a coating layer containing metal foil and the original fabric, and the original fabric And an embossing device for embossing the laminate of the covering layer.

  The 1st or 2nd embossing system by this invention may further be provided with the peeling apparatus which peels off the said coating layer from the laminated body to which the said embossing was given.

  The first or second embossing system according to the present invention may further include a cooling device for cooling the embossed laminate.

  Moreover, the 1st or 2nd embossing system by this invention WHEREIN: The said embossing apparatus may be comprised so that the said embossing may be performed to the said laminated body, heating the said laminated body.

  Furthermore, the 1st or 2nd embossing system by this invention WHEREIN: You may make it the said lamination | stacking apparatus be a nip roll which presses the said laminated body and the said coating layer toward each other.

  A manufacturing method of a first processed product according to the present invention is a manufacturing method of manufacturing a processed product by forming a concavo-convex pattern on an original fabric by embossing, the step of overlaying a coating layer and the original fabric, A step of embossing the laminate of the original fabric and the coating layer, and the coating layer is more stressed than the material forming the surface on the embossing mold surface side of the original fabric during the embossing step. It is formed from a material whose relaxation time is shortened.

  The manufacturing method of the 2nd processed goods by this invention is a manufacturing method which forms an uneven | corrugated pattern in a raw fabric by embossing, and manufactures a processed product, Comprising: The coating layer containing metal foil and the said raw fabric are piled up. And a step of embossing the laminate of the original fabric and the covering layer.

  The first or second processed product manufacturing method according to the present invention may further include a step of peeling the covering layer from the embossed laminate.

  In addition, the first or second processed product manufacturing method according to the present invention may further include a step of cooling the embossed laminate.

  Furthermore, in the manufacturing method of the 1st or 2nd processed goods by this invention, you may make it emboss in the said laminated body, heating the said laminated body during the process of performing the said embossing.

  A first embossing method according to the present invention is a manufacturing method for manufacturing a processed product by forming a concavo-convex pattern on an original fabric by embossing, the step of overlaying a coating layer and the original fabric, And a step of embossing the laminated body of the coating layer, and the coating layer has a stress relaxation time longer than the material forming the surface of the original embossed mold surface during the embossing step. It is formed from the material which becomes short.

  A second embossing method according to the present invention is a manufacturing method for manufacturing a processed product by forming a concavo-convex pattern on an original fabric by embossing, the step of superimposing a coating layer containing a metal foil and the original fabric; And a step of embossing the laminate of the original fabric and the coating layer.

  According to the present invention, it is possible to form a concavo-convex pattern on an original fabric with excellent transfer efficiency while maintaining production efficiency.

FIG. 1 is a diagram for explaining an embodiment according to the present invention, and is a schematic diagram showing an embossing system and a method of manufacturing a workpiece by the embossing system. FIG. 2 is a diagram for explaining a method for manufacturing a processed product, and is a diagram illustrating a process of forming a laminated body. FIG. 3 is a diagram for explaining a method for manufacturing a processed product, and is a diagram illustrating a process of embossing. FIG. 4 is a diagram for explaining a method for manufacturing a processed product, and is a diagram illustrating a process of cooling the laminated body. FIG. 5 is a diagram for explaining a method for manufacturing a processed product, and is a diagram illustrating a process of peeling the coating layer. FIG. 6 is a view showing a processed product (release paper) obtained by the manufacturing method shown in FIGS.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In the drawings attached to the present specification, for the sake of illustration and ease of understanding, the scale, the vertical / horizontal dimension ratio, and the like are appropriately changed and exaggerated from those of the actual product.

  1 and 2 are diagrams for explaining an embodiment according to the present invention. First, an embossing system for manufacturing a processed product by forming an uneven pattern on an original fabric will be described first with reference mainly to FIG. Here, FIG. 1 is a schematic diagram for explaining an embossing device and a method of manufacturing a processed product using the embossing device.

  The embossing system 30 described below is configured to produce a release paper 25 from the raw fabric 20 as a processed product. The obtained release paper 25 is used as a paper pattern for producing sheet-like members such as vinyl leather and wallpaper. In particular, an example will be described below in which the produced release paper 25 functions as a paper pattern for producing a sheet-like member 30 used as synthetic leather. The release paper 25 is repeatedly used, and a plurality of sheet-like members can be produced.

  As shown in FIG. 1, an embossing system 30 includes a laminating apparatus 40 that superimposes a covering layer 28 and an original fabric 20, and an embossing apparatus 50 that embosses a laminate 29 of the original fabric 20 and the covering layer 28. And a peeling device 45 that peels the coating layer 28 from the laminated body 29 that has been embossed. The embossing system 30 further includes a cooling device 60 that cools the embossed laminate 29.

  First, the stacking apparatus 40 will be described. The laminating apparatus 40 is configured as a nip roll for laminating the covering sheet 27 on the sheet-shaped raw fabric 20. The laminating apparatus 40 sequentially forms a laminated body 29 (see FIG. 2) having an original fabric 20 that is sequentially supplied and a covering layer 28 that is sequentially provided with a covering sheet 27.

  In this specification, “stacking” does not require fixing two adjacent layers to each other. Therefore, “lamination” is not limited to an aspect in which two layers are bonded to each other using an adhesive (a concept including an adhesive material). For example, a state in which two adjacent layers are simply overlapped with each other, in other words, a state in which only two layers are constrained to each other only by gravity or frictional force is also included in the “lamination” used in this specification. In the illustrated example, the laminating apparatus 40 composed of nip rolls is configured to place the covering sheet 27 directly on the raw fabric 20 and further press it toward each other (see FIG. 2).

  Next, the embossing apparatus 50 will be described. As shown in FIG. 1, the embossing device 50 includes an embossing mold 52 having a concavo-convex shape corresponding to the concavo-convex pattern to be formed on the raw fabric 20, and the embossing mold 52. And a backup body 56 that presses the raw fabric 20 between them. In the present embodiment, the embossing mold 52 is configured as a roll-shaped embossing roll. The embossing roll 52 has a roll main body 53 that is rotationally driven, and an embossing-type surface 53 a having an uneven shape is formed on the outer peripheral surface of the roll main body 53. In this Embodiment, the uneven | corrugated shape of the embossing type | mold surface 53a is formed so that a leather pattern can be provided to the raw fabric 20 so that the release paper 10 for synthetic leather can be produced.

  Moreover, in this Embodiment, the backup body 56 is arrange | positioned facing the embossing roll 52, and is comprised as a backup roll which can be rotated synchronizing with the moving speed of the original fabric 20. FIG. As shown in FIG. 3, the backup roll 56 sandwiches the raw fabric 20 with the embossing roll 52.

  The embossing device 50 is connected to a roll main body 53 of the embossing roll 52, and a drive mechanism (not shown) that rotationally drives the roll main body 53 and a drive mechanism that is connected to the backup roll 56 and rotationally drives the backup roll 56 ( (Not shown). By these drive mechanisms, the embossing roll 52 and the backup roll 56 rotate in synchronization with the conveyance speed of the original fabric 20 to transfer the uneven shape of the embossed mold surface to the original fabric 20.

  In the present embodiment, an uneven shape corresponding to the uneven shape of the embossed mold surface 53 a is also formed on the outer peripheral surface of the backup roll 56. As a result, it is possible to transfer an uneven pattern having a height difference to the original fabric 20 (laminated body 29) passing between the embossing roll 52 and the backup roll 56 with extremely high accuracy.

  Further, as indicated by dotted lines in FIG. 1, the embossing roll 52 and the backup roll 56 have heating devices (heating mechanisms) 54 and 58, respectively. The heating devices 54 and 58 are configured to heat the original fabric 20 when the original fabric 20 is embossed. In the illustrated example, the heating devices 54 and 58 are incorporated in the embossing roll 52 and the backup roll 56, respectively, and heat the outer peripheral surface of the roll. And the heat | fever of the heating apparatuses 54 and 58 is transmitted to the raw fabric 20 (laminated body 29) via an outer peripheral surface.

  As shown in FIG. 1, the embossing roll 52 and the backup roll 56 are arranged on the downstream side of the laminating apparatus 40 described above. Accordingly, the raw fabric 20 as the workpiece is first passed between the nip rolls constituting the laminating apparatus 40 and then passes between the embossing roll 52 and the backup roll 56. Under the present circumstances, the nip roll which comprises the lamination apparatus 40 functions also as a guide roll which guides the laminated body 29 to the embossing apparatus 50. FIG.

  Next, the peeling device 45 will be described. The peeling device 45 is formed as a pair of rolls similarly to the laminating device 40. The peeling device 45 composed of a pair of rolls removes the coating layer 28 from the laminated body 29 in cooperation with a coating layer recovery device 34 described later, that is, peels the coating layer 45 from the processed product (release paper) 25. become. The peeling device 40 is disposed on the downstream side of the embossing device 50, and also functions as a guide tor that guides the laminated body 29 (the processed product 25 and the coating layer 28) processed by the embossing device 50.

  Next, the cooling device 60 will be described. The cooling device 60 is configured to cool the laminated body 29 (the processed product 25 and the coating layer 28) that has been subjected to embossing. In the illustrated example, the cooling device 60 is formed as a nozzle that supplies a cooling medium. As shown in FIG. 1, the nozzles constituting the cooling device 60 are respectively arranged on both sides of the embossed sheet-like laminate 29. Further, the nozzle constituting the cooling device 60 is arranged between the embossing device 50 and the peeling device 45. That is, the embossed sheet-like laminate 29 is cooled by spraying a cooling medium from both sides. In addition, as a refrigerant | coolant, it can select suitably from the gas (for example, air and nitrogen gas) which has temperature lower than the temperature of the laminated body 29 sent out from the embossing apparatus 50, liquid nitrogen, etc.

  By the way, the embossing system 30 includes a raw material supply device (not shown) that supplies the raw material 20, a processed product recovery device (not shown) that recovers a processed product that has been embossed, and a coating layer. 28 further includes a coating layer supply device 32 that supplies the coating sheet 27 that forms 28, and a coating layer collection device 34 that collects the coating sheet 27 peeled off from the processed product.

  And in this Embodiment, the raw fabric 20 supplied from the raw fabric supply apparatus which is not shown in figure consists of the base material 24 which consists of paper, and the synthetic resin layer 22 laminated | stacked on the base material 24 ( (See FIG. 2). Such an original fabric 20 can be manufactured, for example, by blending a desired synthetic resin with a solvent and coating the base material 24. In this case, the synthetic resin layer 22 of the raw fabric 20 extends flatly on the base material 24 and has an excellent gloss. The resin contained in the synthetic resin layer 22 is variously selected according to the request for the release paper 25 to be manufactured, such as polypropylene. As a specific example, in the embossing system 30 for producing a release paper for synthetic leather, a layer made of polypropylene having a thickness of 30 μm to 50 μm is defined as a synthetic resin layer 22 and has a thickness of 150 μm to 200 μm. The finished paper can be used as the base material 24.

  Further, as shown in FIG. 3, the synthetic resin layer 22 in the original fabric 20 faces the embossing mold surface 53 a of the embossing roll 52, and the base material 24 in the original fabric 20 faces the backup roll 56. Thus, the raw fabric 20 is supplied from the raw fabric supply device.

  On the other hand, the covering sheet 27 supplied from the covering layer supply device 32 is a material (that is, a material forming a surface located on the embossing mold surface 53 side of the raw fabric 20 under the conditions at the time of embossing in the embossing device 50 (that is, The material is made of a material having a stress relaxation time shorter than that of the material forming the synthetic resin layer 22. In the present embodiment, the covering sheet 27 is formed as a foil made of copper, aluminum or the like. Further, as shown in FIGS. 1 and 2, a covering sheet 27 is supplied from a covering layer laminating apparatus 32 so that the covering layer 20 is laminated on the synthetic resin layer 22 side of the raw fabric 20.

  Note that the thickness and material of the covering sheet 27 that forms the covering layer 28 are such that the covering sheet 27 (covering layer 28) plastically deforms following the uneven shape of the embossing mold surface 25 in an embossing process described later. Selected to get. That is, the thickness and material of the covering sheet 27 forming the covering layer 28 are designed in consideration of the uneven shape of the embossing mold surface 25 and the processing pressure as appropriate. For example, in the embossing system 30 for producing a release paper for synthetic leather, an aluminum foil having a thickness of 10 μm to 20 μm can be used as the covering sheet 27 (covering layer 28).

  Next, a method of manufacturing a processed product (release paper) 25 using the embossing system 30 having such a configuration will be described.

  First, the original fabric 20 is fed out from the original fabric supply device, and this original fabric 20 is supplied between a pair of nip rolls constituting the laminating device 40. The raw fabric 20 supplied here has the base material 24 made of paper and the synthetic resin layer 22 laminated on the base material 24 as described above (see FIG. 2).

  In parallel with the supply of the raw fabric 20, the coating sheet 27 is fed out from the coating layer supply device 32, and this coating sheet 27 is also supplied between a pair of nip rolls constituting the laminating device 40. As shown in FIG. 2, the covering sheet 27 is constituted only by a covering layer 28 made of a metal foil.

  Then, as shown in FIG. 2, in the stacking apparatus 40, the coating sheets 27 that are sequentially supplied are superposed on the raw materials 20 that are sequentially supplied. In this way, in the laminating apparatus 40, the laminated body 29 composed of the raw fabric 20 and the coating layer 28 is sequentially produced. As shown in FIG. 2, in the manufactured laminate 29, the coating layer 28 made of metal foil is disposed on the synthetic resin layer 22 of the raw fabric 20.

  Thereafter, the laminate 29 is conveyed to the embossing apparatus 50. As shown in FIG. 1 and FIG. 3, the laminate 29 is fed between the embossing roll 52 and the backup roll 56 of the embossing apparatus 50 so as to be sandwiched between the embossing roll 52 and the backup roll 56. become.

  As shown in FIG. 3, the embossed mold surface 53 a comes into contact with the coating layer 28 in the stacked body 29. As shown in FIG. 3, with respect to the raw fabric 20, the synthetic resin layer 22 is positioned on the embossing roll 52 side of the embossing apparatus 50, and the base material 24 is positioned on the backup roll 56 side. That is, the outer peripheral surface of the backup roll 56 comes into contact with the base material 24 of the original fabric 20.

  During this embossing process, for example, the embossing mold surface 53 a of the embossing roll 52 is heated to a temperature of about 90 ° C. to 150 ° C. by the heating devices 54, 58 built in the embossing device 50, and the outer periphery of the backup roll 56. The surface can be heated to a temperature on the order of 40 ° C to 90 ° C. As a result, the laminated body 29 passing between the embossing roll 52 and the backup roll 56 is embossed while being heated. In particular, the coating layer 28 in contact with the embossed mold surface 53a of the laminate 29 is made of a metal foil and has a high heat transfer coefficient and heat conductivity. For this reason, during the embossing process, from the heating devices 54 and 58 incorporated in the embossing device 50, the synthetic resin layer of the raw fabric 20 that does not directly contact the outer surfaces of the embossing roll 52 and the backup roll 56 is obtained. Heat can be uniformly transmitted with high efficiency.

  In the embossing process as described above, the coating layer 28 made of a metal foil having an appropriately set thickness can be plastically deformed by the pressure from the embossing device 50. Thereby, the coating layer 28 can be deformed so as to follow the outer contour of the embossed mold surface 53a.

  Further, during the embossing process, the synthetic resin layer 22 of the raw fabric 20 adjacent to the coating layer 28 is heated and exhibits a property as a viscoelastic fluid more strongly. For this reason, it becomes possible to deform | transform so that it may follow the outer contour of the embossing type | mold surface 53a exactly according to the viscosity of the synthetic resin 22. FIG. In addition, a concavo-convex shape corresponding to the concavo-convex shape of the embossed mold surface 53 a is also formed on the outer peripheral surface of the backup roll 56. Therefore, the base material 24 of the raw fabric 20 that comes into contact with the outer peripheral surface of the backup roll 56 is also accurately deformed into a desired shape together with the synthetic resin layer 22.

  In this way, the concavo-convex shape of the embossed mold surface 53a is transferred to the laminate 29 with high accuracy, and a desired concavo-convex pattern is formed on the laminate 29 (original fabric 20). The laminated body 29 on which the concave / convex pattern is formed is then conveyed toward the peeling device 45.

  By the way, as described above, the synthetic resin layer 22 of the raw fabric 20 originally has viscoelastic properties, and more strongly has viscoelastic properties because it is heated during the embossing process. It becomes like this. Therefore, between the embossing roll 52 and the backup roll 56, the synthetic resin layer 22 can be deformed to some extent due to its viscous property, but due to its elastic property, the synthetic resin layer 22 Stress is generated inside. And since the time which the laminated body 29 (synthetic resin layer 22) is pressurized between the embossing roll 52 and the backup roll 56 is a short time, the laminated body 29 (synthetic resin layer 22) is an embossing apparatus. The stress generated in the synthetic resin layer 22 when being sent out from the resin 50 remains almost as it is.

  For this reason, after the laminated body 29 (synthetic resin layer 22) is sent out from the embossing apparatus 50, the synthetic resin layer 22 tends to be deformed due to the internal stress. Similarly, since the pressurization time in the embossing apparatus 50 is short, the base material 22 made of paper of the original fabric 20 is not completely deformed during the embossing process. That is, while being pressed by the embossing device 50, the original fabric 20 can be deformed into a desired shape. However, after being fed out from the embossing device 50, the original fabric 20 has a shape before processing (flat shape). Trying to return. Therefore, even if a desired concavo-convex pattern can be once formed on the original fabric 20 by the embossing apparatus 50, there may be a disadvantage that the original fabric 20 is flattened thereafter.

  On the other hand, in the present embodiment, a coating layer 28 made of a metal foil is laminated on the synthetic resin layer 22 of the raw fabric 20, and the raw fabric 20 including the synthetic resin layer 22 is embossed together with the coating layer 28. Yes. When the temperature at the time of embossing and after embossing is not lowered, the stress relaxation time of the coating layer 28 made of this metal foil is significantly shorter than the stress relaxation time of the synthetic resin layer 22. Therefore, the coating layer 28 can be sufficiently plastically deformed by pressing in a short time by the embossing device 50. For this reason, even after the laminated body 50 is sent out from the embossing apparatus 50, the coating layer 28 can stably maintain the uneven shape provided from the embossing mold surface 53a. And, the coating layer 28 that maintains the uneven shape is conveyed with the original fabric 20 in a state of being laminated on the original fabric 20, and during this conveyance period, the coating layer 28 resists the restoring force of the original fabric 20, Flattening of the raw fabric 20 can be significantly suppressed.

  As shown in FIGS. 1 and 4, the laminate 29 is actively cooled by the cooling device 60 until it reaches the peeling device 45 after being sent out from the embossing device 50. As described above, the coating layer 28 of the laminate 29 is made of a metal foil and has a high heat transfer coefficient and heat conductivity. For this reason, the temperature of the laminated body 20 can be reduced rapidly.

  When the temperature of the synthetic resin layer 22 of the raw fabric 20 decreases with the temperature decrease of the laminate 29, the viscosity property of the resin material forming the synthetic resin layer 22 is significantly decreased. That is, the synthetic resin layer 22 loses fluidity and hardens and does not easily deform. For this reason, when the laminated body 20 is cooled, the synthetic resin layer 22 is no longer flattened by the internal stress accumulated by the deformation at the time of embossing, which has high fluidity. Further, the restoring force of the paper to be flattened is originally very small, and the hardened synthetic resin layer 22 can sufficiently prevent the flattening of the base material 24 made of paper.

  In this way, as shown in FIGS. 1 and 5, the laminate 20 is conveyed to the peeling device 45 while the deformation of the original fabric 20 is suppressed by the coating layer 28 laminated on the original fabric 20. In the peeling device 45, the coating layer 28 is removed from the laminate 29. That is, the covering layer 28 (covering sheet 29) is peeled off from the original fabric 20 on which the uneven shape is formed. The peeled coating layer 28 (covering sheet 29) is taken up by the coating layer collecting device 34. In this way, as shown in FIG. 6, a processed product (release paper) 25 made of the raw fabric 20 having a concavo-convex shape is obtained.

  According to the present embodiment as described above, the raw fabric 20 is embossed together with the coating layer 28, and the coating layer 28 remains laminated on the raw fabric 20 for a certain period after the embossing. Yes. The covering layer 28 is formed of a material having a sufficiently short stress relaxation time even during the embossing and for a certain period after the embossing, and can be completely deformed under a short time pressure during the embossing. It becomes like this. For this reason, the flattening of the raw fabric 20 including the resin layer 22 is restrained by the coating layer 28 for a certain period after the embossing. As a result, an uneven pattern can be formed on the original fabric with excellent transfer efficiency while maintaining the production efficiency without reducing the embossing speed.

  Moreover, in this Embodiment, the laminated body 29 is heated at the time of embossing, and the laminated body 29 comes to be actively cooled by the cooling device 60 after embossing. Therefore, the resin layer 22 of the raw fabric 20 can be quickly cured after embossing. On the other hand, the residual stress generated inside the resin layer 22 is a stress generated when the resin layer 22 having fluidity is heated and deformed, and to the extent that the resin layer 22 cured by cooling can be deformed. Don't get big. Therefore, the highly accurate uneven pattern formed on the original fabric 20 by embossing can be maintained almost as it is without being flattened.

  Various modifications can be made to the above-described embodiment within the scope of the present invention.

  For example, in the above-described embodiment, the example in which the release paper for synthetic leather is manufactured as the processed product 60 has been described. However, the present invention is not limited thereto, and it is naturally possible to manufacture the processed product 60 used for other purposes. It is.

  In the above-described embodiment, the cooling device 60 is provided in the embossing system 30 and the laminated body 29 after the embossing is actively cooled. However, the present invention is not limited thereto. Depending on the shape of the original fabric 20 and the selection of the material constituting the original fabric 20, the laminate 29 fed from the embossing apparatus 50 may be cooled at a sufficient cooling rate by natural cooling by heat radiation. Moreover, the distance between the embossing apparatus 50 and the peeling apparatus 45 is long, and the raw fabric 20 may be cooled to a sufficient temperature while restraining deformation of the raw fabric 20 by the coating layer 28. As in these cases, when the raw fabric 20 can be sufficiently cooled by the peeling device 45 before the coating layer 28 is peeled off, the raw fabric 20 is actively cooled using the cooling device 60. There is no need.

  Furthermore, although the embossing system 30 has shown the example which has the peeling apparatus 45 in embodiment mentioned above, it is not restricted to this. For example, the embossed laminate 29 may be wound up without removing the coating layer 28 by the peeling device 45. In this case, the covering layer 28 can be removed immediately before the laminate 29 is actually used. As in the above-described embodiment, when the processed product 25 obtained by embossing the original fabric 20 is used as a release paper, the coating layer 28 can also function as a protective film for protecting the release paper. .

20 Raw fabric 22 Resin layer (synthetic resin layer)
27 Coating sheet 28 Coating layer 29 Laminate 30 Embossing system 40 Laminating device 45 Peeling device 50 Embossing device 53a Embossing mold surface 54 Heating device 58 Heating device 60 Cooling device

Claims (11)

An embossing system for forming an uneven pattern on an original fabric by embossing,
A laminating apparatus for superimposing the coating layer and the original fabric;
An embossing device for embossing the laminate of the original fabric and the coating layer,
The embossing system is characterized in that the coating layer is formed of a material whose stress relaxation time is shorter than that of the material forming the surface on the embossing mold side of the original fabric during embossing. An embossing system for forming an uneven pattern on an original fabric by embossing,
A laminating apparatus for superimposing the coating layer containing the metal foil and the original fabric;
An embossing system comprising: an embossing device that embosses the laminate of the original fabric and the coating layer. The embossing system according to claim 1 or 2, further comprising a peeling device that peels off the coating layer from the embossed laminate. The embossing system according to any one of claims 1 to 3, further comprising a cooling device that cools the embossed laminate. The embossing system according to any one of claims 1 to 4, wherein the embossing device is configured to emboss the laminated body while heating the laminated body. The embossing system according to any one of claims 1 to 5, wherein the laminating apparatus is a nip roll that presses the laminated body and the coating layer toward each other. A manufacturing method for manufacturing a processed product by forming an uneven pattern on an original fabric by embossing,
A step of superposing the coating layer and the original fabric;
Embossing the laminate of the original fabric and the coating layer,
The coated layer is formed from a material whose stress relaxation time is shorter than that of the material forming the surface of the original embossed mold surface during the embossing process. Method. A manufacturing method for manufacturing a processed product by forming an uneven pattern on an original fabric by embossing,
A step of overlaying the coating layer containing the metal foil and the original fabric;
And a step of embossing the laminate of the original fabric and the coating layer. The method for manufacturing a processed product according to claim 7, further comprising a step of peeling the covering layer from the embossed laminate. The method for manufacturing a processed product according to any one of claims 7 to 9, further comprising a step of cooling the embossed laminate. The method for producing a processed product according to any one of claims 7 to 10, wherein the embossing is performed on the laminate while heating the laminate during the embossing step.

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