Foil beating preparation body, foil beating preparation bag, and foil beating method

The use of a laminate of metal sheets and foil-stamping paper encased in a bag-shaped aramid fiber fixing member with hook-and-loop fasteners addresses the inefficiencies of traditional methods, ensuring stable and efficient foil stamping.

JP2025161160APending Publication Date: 2025-10-24IMAIKINPAKU
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Patent Information

Application Number
JP2024064115
Authority / Receiving Office
JP · JP
Patent Type
Applications
Current Assignee / Owner
Filing Date
2024-04-11
Publication Date
2025-10-24

AI Technical Summary

Technical Problem

Existing methods for preparing gold leaf are inefficient due to the tearing or detachment of leather fasteners during the foil stamping process, leading to difficulty in handling and processing.

Method used

A laminate of metal sheets and foil-stamping paper is encased in a bag-shaped fixing member made of aramid fiber, secured with hook-and-loop fasteners, to maintain the shape and stability during foil stamping.

Benefits of technology

The method ensures efficient foil stamping by preventing shifting and tearing, resulting in higher quality foil production and improved work efficiency.

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Abstract

To provide a foil beating preparation body capable of efficiently foil-beating a metal sheet.SOLUTION: This foil beating preparation body comprises: a laminate formed by alternately stacking metal sheets and foil beating sheets used for foil-beating the metal sheet; and a cloth fixing member that envelops the laminate. A fabric constituting the fixing member contains alamido fibers. Preferably, the fixing member includes, when the stacking direction of the foil beating sheets and the metal sheet is up, a lid that covers the laminate from above and a bottom that covers the laminate from below. The lid and the bottom are bonded together by a detachable fastener, and the laminate is pressed by the bonding of the lid and the bottom.SELECTED DRAWING: Figure 1
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Description

[Technical Field]

[0001] The present invention relates to a foil stamping preparation device, a foil stamping preparation bag, and a foil stamping method. [Background technology]

[0002] For example, Patent Document 1 discloses a method for handling gold leaf, which uses a holding frame (3) equipped with a contact edge (5) that makes surface contact across a narrow width with the periphery of gold leaf (1) cut to a predetermined size, and uses water or water containing a water-soluble adhesive that adheres to the contact edge (5) to adhere the periphery of the gold leaf (1) with an interleaf (2) between it and the contact edge (5), and then removes and transports the gold leaf. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 8-267998 Summary of the Invention [Problem to be solved by the invention]

[0004] SUMMARY OF THE INVENTION The present invention aims to provide a foiling preparation for metal sheets that can be foiled efficiently. [Means for solving the problem]

[0005] The foil-stamping preparation body of the present invention comprises a laminate of alternating metal sheets and foil-stamping paper used for foil-stamping the metal sheets, and a fabric fixing member that encases the laminate, and the fabric that makes up the fixing member contains aramid fiber.

[0006] Preferably, the fixing member comprises a lid portion that covers the stack from above and a bottom portion that covers the stack from below when the stacked direction of the foil-coated paper and the metal sheet is the uppermost, the lid portion and the bottom portion being adhered to each other by a removable fastener, and the stack is pressed by the adhesion between the lid portion and the bottom portion.

[0007] The foiling method of the present invention includes a compression step of compressing a laminate formed by alternating layers of metal sheets and foiling paper used for foiling the metal sheets, a fixing step of fixing the shape of the laminate compressed by the compression step using a bag-shaped fixing member, and a foiling step of foiling the laminate fixed by the fixing member in the compressed state in the fixing step.

[0008] Preferably, the bag-shaped fixing member contains aramid fibers.

[0009] Preferably, the fixing member forms a bag using a detachable fastener provided on the fixing member, and in the fixing step, the fastener of the fixing member is fastened along the shape of the laminate in a compressed state.

[0010] Preferably, the fastener is a hook-and-loop fastener, and the fixing member forms a bag by bonding the hook-and-loop fastener.

[0011] The foil stamping preparation bag of the present invention comprises a bag-shaped fixing member that encases a laminate formed by alternating layers of metal sheets and foil stamping paper used for foil stamping the metal sheets, and a removable fastener attached to the fixing member, the fastener changing the size of the storage space for the laminate depending on the attachment position of the fastener, and the fixing member containing aramid fiber. [Effects of the Invention]

[0012] According to the present invention, metal sheets can be foiled efficiently. [Brief explanation of the drawings]

[0013] [Figure 1] 1 is a diagram illustrating a metal sheet foil stamping preparation body 1 in this embodiment. [Figure 2] 3A and 3B are diagrams illustrating a fixing member 30 in this embodiment. [Figure 3] 1 is a flowchart illustrating a method (S10) for foil stamping a metal sheet in this embodiment. [Figure 4] 1A to 1C are diagrams illustrating the state of the laminate 10 in each step of the foil stamping method in this embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0014] First, a general method for manufacturing gold foil will be described, taking the case where the metal of the metal sheet is gold as an example. The gold leaf manufacturing process consists of rolling, skimming, and beating. In the rolling process, gold alloy bullion is made and then rolled into a thin strip. In the skimming process, the metal that has been rolled and fixed is further beaten to a thickness of less than one-tenth of its original size, matted, and cut into 20cm square pieces. The metal that has completed the skimming process is called "skimmed." In the gold leaf beating process, the top layer is cut into 9 to 16 pieces, which are then sandwiched between pieces of gold leaf beating paper called komagami, which is then fixed in place so that the gold leaf beating paper and the top layer do not slip.The gold leaf is then beaten out with a gold leaf beating machine, stretching it to about 10cm square. The top layer of the rolled out gold leaf is called "koma," and this koma is transferred to a sheet of gold leaf paper called "mamagami," which is then rolled out to about 1 / 10,000 of a millimeter using a gold leaf beating machine, and then cut to the required size to complete the gold leaf. In the past, in preparation for the gold leaf beating process in the gold leaf manufacturing process, a laminate consisting of alternating layers of gold leaf beating paper and skimmed metal sheets was wrapped in leather, sandwiched between cowhide leather from above and below, and the cowhide leather was secured with strips of glued shamisen leather, before the gold leaf beating process was carried out. However, with this conventional preparation method, the shamisen leather would tear or come off, making it difficult to work with. Therefore, the foil stamping method of the present invention solves the above problem by forming a foil stamping preparation body that can withstand foil stamping by a foil stamping machine.

[0015] FIG. 1 is a diagram illustrating a foil stamping preparation unit 1. As shown in FIG. In this embodiment, the foil that has been completed through the foiling process is referred to as a “metal foil,” and the foil in the manufacturing process up to the completion of the metal foil is referred to as a “metal sheet.” The foil is a thin piece of metal or a metal alloy. As shown in FIG. 1( a ), the foil stamping preparation body 1 includes a laminate 10 , synthetic leather 20 , and a fixing member 30 . 1(b), laminate 10 is a laminate in which foiled papers 12 and metal sheets 14 are alternately stacked. Specifically, laminate 10 is composed of approximately 1,900 sheets of foiled papers 12 and metal sheets 14 sandwiched between the foiled papers 12, and foiled papers 12 and metal sheets 14 are stacked to form a rectangular parallelepiped shape. The foiling paper 12 is used for foiling metal sheets and is made of glassine paper, Japanese paper, or glassine paper impregnated with ink. The foiling paper 12 has a larger surface area than the metal sheet 14 that is sandwiched between them. Specifically, the foiling paper 12 is large enough that the metal sheet 14, which has been flattened and stretched during foiling, does not protrude from the foiling paper.

[0016] The metal sheet 14 is the base metal foil produced by beating, and is a metal sheet in the manufacturing process up to the completion of the metal foil. The metal sheet 14 is a sheet-like member made of a single metal such as gold, silver, platinum, copper, tin, or aluminum, or an alloy of these metals, and is a metal sheet with a thickness of about 1 / 1000 mm that has undergone the skimming process, which is a metal foil manufacturing process. The synthetic leather 20 is approximately the same size as the foil-cut paper 12, and when the foil-cut paper 12 and metal sheet 14 are stacked in the upright position, they are placed above and below the laminate 10 and integrated with the laminate 10. The synthetic leather 20 is approximately 1 mm to 3 mm thick and functions as a stamping die. The laminate 10 sandwiched between the synthetic leathers 20 is referred to as laminate 10a. In this embodiment, synthetic leather is used as the stamping die, but leather may also be used, and any material other than synthetic leather or leather may be used as long as it functions as a stamping die.

[0017] The fixing member 30 is a bag that encases the laminate 10, and has a flap portion 302 that covers the opening of the bag-shaped fixing member 30. Specifically, when the stacked direction of the foil-coated paper 12 and the metal sheet 14 is considered to be the upper side, the fixing member 30 is made up of a lid portion 32 that covers the laminate 10 from above (one of the top and bottom sides), and a bottom portion 34 that covers the laminate 10 from below (the other of the top and bottom sides). As illustrated in FIG. 2( a), the lid portion 32 and the bottom portion 34 of the fixing member 30 each have a flap portion 302 that covers the opening of the bag-shaped fixing member 30. Specifically, when unfolded, the lid portion 32 and the bottom portion 34 have a support surface 300 that supports the laminate 10 from the top and bottom surfaces of the laminate 10, and a flap portion 302 that supports the laminate 10 from the side surfaces of the laminate 10. A detachable fastener 36 is formed on the flap portion 302. As illustrated in FIG. 1( b), the top surface of the laminate 10 refers to the top surface of the laminate, which has a rectangular parallelepiped shape when the stacking direction of the foiled paper 12 and the metal sheet 14 is upward, and the bottom surface refers to the surface opposite the top surface. The side surface refers to a surface that is perpendicular to the top surface or the bottom surface. 2(b) and 2(c), fasteners 36 are formed on the flap portions 302 of the lid portion 32 and the bottom portion 34, and the lid portion 32 and the bottom portion 34 are bonded to each other by the fasteners 36, forming the fixing member 30 into a bag shape. Furthermore, the fixing member 30 maintains the shape of the laminate 10 due to the pressing force generated by bonding the lid portion 32 and the bottom portion 34 to each other by the fasteners 36.

[0018] 2(b), the fastener 36 is, for example, a hook-and-loop fastener, and the hook-and-loop fastener is formed on each of the mating surfaces of the lid portion 32 and the bottom portion 34. Specifically, the hook-and-loop fastener formed on the flap portion 302 of the lid portion 32 and the hook-and-loop fastener formed on the flap portion 302 of the bottom portion 34 mate together to encase the laminate 10. The area where the hook-and-loop fastener is formed covers the entire flap portion 302. As a result, by raising or lowering the adhesion position between the flap portion 302 of the lid portion 32 and the flap portion 302 of the bottom portion 34, a bag can be formed according to the height of the laminate 10. Because hook-and-loop fasteners are formed on all of the flap portions 302 that support the sides of the laminate 10, there are many adhesive points and a wide adhesive surface area, making it less likely to come off when the foil is being beaten with the foil beater than when using conventional strip-shaped shamisen skin. Also, by bonding the lid portion 32 and the bottom portion 34 with hook-and-loop fasteners on each of the four sides of the laminate 10, the adhesive strength is balanced, making it even less likely to come off. The fixing member 30 is a fabric member, and is made of a material strong enough to withstand the foiling process of a foiling machine. For example, the material used for the fixing member 30 contains aramid fiber, which is heat-resistant and has high strength. Furthermore, the material is coated with urethane resin to prevent fraying of the fibers. The fixing member 30 is an example of a foiling preparation bag according to the present invention.

[0019] FIG. 3 is a flowchart illustrating the method for foil stamping a metal sheet (S10) according to this embodiment. As shown in FIG. 3, the method for foiling a metal sheet (S10) in this embodiment describes a preparation method for foiling a metal sheet that has undergone the skimming step in the gold foil manufacturing process. In step 100 (S100), as shown in FIG. 4(a), the worker places synthetic leather 20 on top and bottom of the laminate 10, which is made by stacking foil paper 12 and metal sheet 14. Specifically, the worker places synthetic leather 20 on the foil paper 12 exposed on the top surface of the laminate 10, and then places synthetic leather 20 on the foil paper 12 exposed on the bottom surface of the laminate 10, thereby integrating the synthetic leather 20 and the laminate 10. The laminate 10 sandwiched between the synthetic leathers 20 is referred to as laminate 10a. In step 105 (S105), as illustrated in FIG. 4(a), the worker covers the stack 10a from above and below with the fixing members 30. At this time, the worker covers the stack 10a with the lid portion 32 of the fixing member 30 from above so that the upper surface of the stack 10a and the support surface 300 of the lid portion 32 of the fixing member 30 are aligned. The worker also covers the stack 10a from below with the bottom portion 34 of the fixing member 30 so that the lower surface of the stack 10a and the support surface 300 of the bottom portion 34 of the fixing member 30 are aligned. The stack 10a covered with the fixing members 30 is referred to as stack 10b.

[0020] In step 110 (S110), as shown in FIG. 4(b), the worker sandwiches the top and bottom of the laminate 10b between metal plates 40. The laminate 10b sandwiched between the metal plates 40 is called the laminate 10c. The metal plates 40 are, for example, iron plates, and are durable against compressive forces exerted by a vice. The weight of the metal plates 40 prevents misalignment between the fixing members 30 and synthetic leather 20 that make up the laminate 10b, and the foil-coated paper 12 and metal sheet 14 that make up the laminate 10. In step 115 (S115), as illustrated in FIG. 4(c), the worker compresses the stack 10c with a vice. The compressive force applied by the vice corresponds to the height of the stack 10 and the type of metal of the metal sheet 14. By compressing the stack 10c sandwiched between the metal plates 40, the pressure of the vice can be applied evenly to the stack 10b. The metal plates 40 also function to protect the surface of the stack 10b.

[0021] In step 120 (S120), as illustrated in FIG. 4(c), the shape of laminate 10b compressed with the vise is fixed with fixing member 30. Specifically, the worker adheres flap portion 302 of lid portion 32 of fixing member 30 to flap portion 302 of bottom portion 34 with hook-and-loop fasteners to form a bag shape according to the shape of laminate 10b in the compressed state, and fixes it. More specifically, flap portions 302 of lid portion 32 and bottom portion 34 are adhered to each of the four side surfaces of laminate 10b, thereby fixing the shape of laminate 10b in the compressed state. The worker stops compression with the vise and removes metal plate 40, and foil stamping preparation body 1 is completed. In step 125 (S125), the worker uses a foil stamping machine to stamp the completed foil stamping preparation body 1. Specifically, the worker stamps foil on the laminate 10a that is fixed by the fixing members 30 in a compressed state. In this way, the foil-beating preparation body 1 is kept in a compressed state while the shape of the laminate 10 is fixed by the fixing member 30, thereby preventing the foil-beating paper 12 that makes up the laminate 10 from shifting. In this embodiment, a vice is used to compress the stack 10b, but the invention is not limited to this and any other device can be used as long as it can compress the stack 10b.

[0022] As described above, with the foil stamping preparation unit 1 in the above embodiment, the bag-shaped fixing member 30 formed by the fasteners 36 encases the laminate 10 in a compressed state, thereby maintaining the shape of the laminate 10 and preventing the foiling paper 12 from shifting when foiling with a foil stamping machine, thereby increasing the percentage of foil that is a good product. Furthermore, since the fixing member 30 is made of a fabric containing aramid fiber, it is resistant to the impact and heat caused by foil stamping and is not easily torn, resulting in good work efficiency.

[0023] In the above embodiment, the fixing member 30 is formed into a bag shape by two pieces of fabric, the lid portion 32 and the bottom portion 34, but this is not limited to this. For example, the laminate 10 may be placed in a bag-shaped fixing member 30 made of a single piece of fabric with an opening, compressed, and the opening may be closed with the flap portion 302 to form the foil stamping preparation body 1. [Explanation of symbols]

[0024] 1...Preparation for foil stamping 10...Laminate 12...Golden foil paper 14...Metal sheet 20…Synthetic leather 30...Fixing member 32...Lid part 34...Bottom 36...fastener 40...Metal plate 300…Support surface 302...Flap section

Claims

1. A laminate in which metal sheets and foil-beating paper used for foil-beating the metal sheets are alternately stacked; a fabric fixing member that encases the laminate; and The fabric constituting the fixing member contains aramid fiber. Preparation for foil stamping.

2. The fixing member comprises a lid portion that covers the stack from above and a bottom portion that covers the stack from below, when the stacked direction of the foil-coated paper and the metal sheet is the upper side of the stack, The lid and the bottom are attached to each other by a removable fastener; The laminate is pressed by the adhesion between the lid and the bottom.

2. The foil stamping preparation of claim 1.

3. a compressing step of compressing a laminate obtained by alternately stacking metal sheets and foil-beating paper used for foil-beating the metal sheets; a fixing step of fixing the shape of the laminate in a compressed state using a bag-shaped fixing member in the compressing step; a foiling step of foiling the laminate fixed by the fixing member in the compressed state in the fixing step; A foil stamping method comprising the steps of:

4. The bag-shaped fixing member contains aramid fiber. The method of claim 3.

5. the fixing member forms a bag by a detachable fastener provided on the fixing member, In the fixing step, the fastener of the fixing member is fastened along the shape of the laminate in a compressed state. The method of claim 3.

6. the fastener is a hook-and-loop fastener, The fixing member forms a bag by bonding the hook-and-loop fastener. The method of claim 5.

7. a bag-shaped fixing member that encases a laminate in which metal sheets and foil-beating papers used for foil-beating the metal sheets are alternately stacked; a detachable fastener provided on the fixing member; and The fastener changes the size of the storage space of the laminate depending on the attachment position of the fastener, The fixing member includes aramid fibers. A bag for preparing foil.

Citation Information

Patent Citations

  • Handling method for gold leaf

    JP1996267998A