IPC分类号：
B44C1/17 | B32B27/00 | B44C1/175
国民经济行业分类号：
C2438 | C2436 | C2435 | C2434 | C2433 | C2432 | C2431 | C3076 | C3075 | C2439
当前申请(专利权)人：
AICELLO CORPORATION
原始申请(专利权)人：
AICELLO CORPORATION
当前申请(专利权)人地址：
45, Aza Koshikawa Ishimakihonmachi,Toyohashi-shi, Aichi 441-1115,JP
摘要：
Forming a film by means of water-pressure transfer is subject to wrinkling and other problems. Accordingly, provided is a pressurization transfer film constituted by a support layer, water-soluble resin layer, and ink layer stacked on top of each other in this order, wherein a concave-convex surface is formed on the ink layer side of the water-soluble resin layer.
技术问题语段：
The technical problem addressed in this patent is the difficulty in accurately positioning a pattern or other film onto a transfer target using the water-pressure transfer method, as well as the potential for wrinkling or other problems of the film caused by the water pressure and lack of control over transfer conditions. The patent proposes a solution by providing a pressurization transfer film with a support layer, water-soluble resin layer, and ink layer stacked on top of each other in this order, with the average roughness of the water-soluble resin layer side of the support layer being 0.30 µm or less and a concave-convex surface being formed on the ink layer side of the water-soluble resin layer.
技术功效语段：
The present invention provides a pressurization transfer film and a method for using it to transfer a concave-convex pattern onto a target surface. The film includes a support layer, a water-soluble resin layer, and an ink layer, with the water-soluble resin layer having a smooth surface and a concave-convex surface. The film can be used to create a concave-convex layer on the target surface by peeling off a protective layer transfer sheet. The technical effects of this invention include improved accuracy in pattern formation, control over transfer conditions, and reduced wrinkling or other problems of the film caused by water pressure. Additionally, the invention provides a method for using a tape to transfer the pattern, which simplifies the attaching step.
权利要求：
1. A pressurization transfer film constituted by a support layer, a water-soluble resin layer, and an ink layer stacked on top of each other in this order, wherein an average roughness Ra of a water-soluble resin layer side of the support layer is 0.30 µm or less and a concave-convex surface is formed on an ink layer side of the water-soluble resin layer.
2. A pressurization transfer film according to Claim 1, constituted by a support layer, a water-soluble resin layer, and an ink layer stacked on top of each other in this order, wherein an average roughness Ra of a water-soluble resin layer side of the support layer is 0.30 µm or less and a concave-convex surface is formed on the ink layer.
3. A pressurization transfer film according to Claim 1 or 2, wherein an adhesive layer is further formed on a side of the ink layer opposite the water-soluble resin layer side.
4. A pressurization transfer film according to any one of Claims 1 to 3, wherein a water-soluble resin that constitutes the water-soluble resin layer is made of one or more types of resins selected from a group that includes saponified polyvinyl acetates and copolymers thereof, aqueous acrylic resins, aqueous polyester resins, polyoxy ethylene, and polystyrene sulfonates.
5. A pressurization transfer film according to any one of Claims 1 to 4, wherein the support layer has a rate of change in dimension of 0 to 3% in both longitudinal direction and lateral direction in an environment of 4.00 g/m3 to 40.9 g/m3 in humidity range.
6. A pressurization transfer film according to any one of Claims 1 to 5, wherein the ink layer provided on the concave-convex surface of the water-soluble resin layer is filled in concaves of the concave-convex surface, while convexes have no ink layer formed on them.
7. A method for forming a concave-convex pattern on a surface of a transfer target according to steps a to d below: a. A step to attach to a transfer target surface a pressurization transfer film according to any one of Claims 1 to 6 so that its support layer side is positioned on an exterior surface; b. A step to apply pressure to the film attached in step a from its support layer side; c. A step to peel off the support layer from a water-soluble resin layer; and d. A step to supply water to an exposed water-soluble resin layer and thereby dissolve the water-soluble resin layer to remove the water-soluble resin layer from the ink layer, in order to form an ink layer having concaves and convexes formed on its surface.
8. A transfer target etching method whereby a pressurization transfer film according to Claim 6 is used to partially provide an ink layer on a surface of a transfer target made of metal, after which an exposed metal part of the transfer target surface is decomposed to etch a metal surface.