JPS6119898A - Production of vapor deposited paper - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention]

purpose of invention

INDUSTRIAL APPLICATION FIELD 1 The present invention relates to an improvement in a method for producing vapor-deposited paper by transferring a metal-deposited film onto paper, and more particularly, to a production method that allows the base film used for transfer to be used repeatedly. [Prior Art] One of the currently widely used techniques for manufacturing vapor-deposited paper is the transfer method. The transfer method uses a base film,
The process consists of bonding a transfer sheet, which basically consists of a release layer and a metallized layer, to paper using an adhesive, and then peeling off the base film. Conventionally, in order to facilitate the peeling of the base film, the adhesive was coated in a width narrower than the width of the release layer to prevent the adhesive from coming into contact with the base film. However, if the width of the adhesive layer is narrower than the width of the release layer, the release layer (and in many cases, ears of the metal vapor deposited layer) will remain on both ends of the peeled base film, so the base film must be discarded. Improvements were required from the viewpoint of resource conservation and cost reduction.

[Problems to be Solved by the Invention] An object of the present invention is to provide a method for producing vapor-deposited paper that allows the base film used for the transfer sheet to be used repeatedly. Structure of the Invention [Means for Solving Problems] The method for producing vapor-deposited paper of the present invention involves bonding a transfer sheet 1-, which has a release layer and a metal vapor-deposited layer on a base film, to paper via an adhesive. In a method of manufacturing metallized paper by laminating, peeling off the base film and transferring the metallized layer to the paper, the width of the base film is a, the width of the release layer is b, the width of the metallized layer is c, and the adhesive When the width of the agent layer is d and the width of the paper is e, each layer is formed so as to satisfy the following conditions: a≧d, d≧b≧c, and e≧d. [Function] The width d of the adhesive layer is formed to be equal to or wider than the width C of the release layer and the metal vapor deposition layer, so that the adhesive layer and the base film can easily peel off. Select and use. With this film, there is no metal vapor deposited layer, release layer or adhesive layer left on the base film after transfer, and a clean base film can be recovered and reused as is.

[-Tora Sea]

When applying a pattern to vapor-deposited paper, a printed layer with a pattern printed thereon is provided between the metal gap W* of the transfer sheet and the release layer. When the width of this printing layer is f, the width of the release layer is b
The printed layer may be formed so as to satisfy the condition ≧f. When a layer with a printed pattern is provided, it is preferable to perform a primer treatment on the release layer and/or the printed layer before applying the metal vapor deposited layer, since this improves the adhesion of the printed layer. It is also desirable to provide a vapor deposition surface protection layer on the metal vapor deposition layer. When the width of this protective layer is 9, the protective layer should be formed so as to satisfy the condition b≧g with respect to the width of the release layer. The case of producing vapor-deposited paper with a pattern on it will be explained with reference to the drawings. As shown in FIG. ,
A transfer sheet is prepared in which a metal vapor deposited layer 4 and a protective layer \5 are laminated. As shown in FIG.
laminate and let the adhesive harden. In the illustrated example, the width a of the base film 1, the width b of the release layer 2, the width f1 of the printing layer 3, the width C1 of the metal vapor deposited layer 4, and the protective layer 5.
between the width g1 of the adhesive layer 6 and the width e of the paper 7, a > d 1d > b > c, e > d. There is a relationship of b > f and b > 9. After the adhesive has hardened, the base film 1 is peeled off to obtain a patterned paper sheet, which is then slit along the broken lines in FIG. 2 to produce a metallized paper product. The base film 1 can be used again to form a transfer sheet, as described above. Suitable materials for the base film used in the transfer sheet include polyethylene terephthalate, oriented polypropylene, oriented polyamide, polycarbonate, polyacetate, cellophane, polyvinyl chloride, polyvinylidene chloride, oriented nylon, and polyvinyl alcohol. Commonly used adhesives are used, including reactive, heat-curing, and electron beam-curing adhesives such as polyurethane, rubber, acrylic, polyvinyl acetate, silicone, and polyester. be able to. As described above, the combination of film material and adhesive is selected so as to improve the releasability between the film material and the base film. As the material for the release layer, vinyl chloride-vinyl acetate copolymer, butyral resin, phenoxy resin, plasticized nitrocellulose, polyamide resin, polyurethane resin, polyester resin, acrylic resin, alkyd resin, etc. may be used. Application on the base film is gravure coating,
Various coating methods can be applied, such as roll coating and air knife coating. Furthermore, if it is desired to increase the interlayer adhesion strength between the release layer 2 and the metal vapor deposited layer 4 and/or the printed layer 3, for example, vinyl chloride-vinyl acetate copolymer, acrylic resin, polyester resin, etc. It is recommended to use a primer treatment to coat the surface. A printing layer for applying a pattern is provided as necessary by methods such as gravure printing, offset printing, silk screen printing, and flexographic printing using commonly used inks. The inks include highly transparent pigments such as Lake Red C1 Carmine 6B, Benzidine Yellow, Phthalocyan Blue, Milory Blue, Phthalocyan Green, Carbon Black, Titanium White,
It may contain aluminum hydroxide or Erosil. The metal deposition layer is formed by depositing a metal such as AI using a known vacuum deposition technique. If it is necessary to protect the surface of this vapor-deposited layer from moisture and oxidation, a protective layer is provided. For this purpose, for example, vinyl chloride-vinyl acetate copolymers, butyral resins, phenoxy resin polyamide resins, polyurethane resins, polyester resins, acrylic resins, alkyd resins or plasticized nitrocellulose may be used - the various coating methods mentioned above. Provided by The paper used as the support for the vapor-deposited paper may be selected from among various papers depending on the purpose, and smooth coated paper or art paper is generally preferred.

【Example】

As a base film for the transfer sheet, the thickness is 20 μm and the width is 10 μm.
Using a 00mm stretched polypropylene film, 113g/113g of acrylic resin was applied on one side as a release layer.
m', both ends of the base film were coated with 960#III#i with gaps of 20IliIll. Next, with a gap of 25 mm from both ends of the base film, add 950 ml of aluminum to a thickness of 600 mm.
It was deposited in one width. On top of that, a polyurethane adhesive was coated with an application amount of 4 (1/m2).A sheet of paper with a basis weight of 90(]/m2 and a width of 11,000 II was laminated to match the width of the hese film, and after curing the adhesive, When the base film was peeled off, a vapor-deposited paper having an aluminum vapor-deposited surface was obtained. The paper was slit at 30 mm from each end to obtain 5 sheets of aluminum vapor-deposited paper with a width of 940 mm. The stretched polypropylene film, which was the peeled base film, was The base film could be recovered in a clean state with no traces of the release layer or adhesive layer or other deposits on the transfer surface.This base film could be used repeatedly in the above process at least 20 times.

[Brief explanation of the drawing]

The drawings are schematic cross-sectional views illustrating the steps of the method for manufacturing vapor-deposited paper of the present invention, in which FIG. 1 shows an example of a transfer sheet, and FIG. 2 shows a state in which transfer is being performed. 1... Base film 2... Peeling layer 3... Printing layer 4... Metal vapor deposited layer 5... Protective layer 6... Adhesive layer 7... Paper patent applicant Dainippon Printing Co., Ltd. Company agent Patent attorney Sou Suga Otsutsu 1 Figure 2

Claims (3)

[Claims] (1) A transfer sheet consisting of a release layer and a metal vapor deposited layer provided on a base film is laminated with paper via an adhesive, the base film is peeled off, and the metal vapor deposited layer is transferred to the paper to create vapor deposited paper. In the manufacturing method, the width of the base film is a, the width of the release layer is b, and the width of the metal vapor deposition layer is c.
, when the width of the adhesive layer is d and the width of the paper is e, a≧
A manufacturing method characterized by forming each layer so as to satisfy the following conditions: d, d≧b≧c, and e≧d, and selecting and using a combination that allows the adhesive and base film to be easily peeled off. (2) A printed layer with a pattern printed thereon is provided between the metal vapor deposited layer and the release layer, and where the width of this printed layer is f, the printed layer is formed so as to satisfy the condition b≧f. The manufacturing method according to item 1. (3) A vapor-deposited surface protective layer is provided on the metal vapor-deposited layer, and when the width of this protective layer is g, the protective layer is formed so as to satisfy the condition b≧g. manufacturing method.