JPS60115443A - Manufacture of decorative film - 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] More specifically, the present invention relates to a method for producing a decorative film for decorating the surface of a cylindrical molded product such as glass or plastic by coating the molded product with a cylindrical shape. .

BACKGROUND ART Conventionally, a method is known in which a self-stretching film is used to display characters, figures, symbols, etc. on the surface of molded products having a substantially cylindrical shape, such as cosmetic containers, food containers, pharmaceutical containers, electrical appliances, etc. In this method, a stretchable film on which characters, figures, symbols, etc. have been formed in advance by printing or other means is made into a cylindrical shape with a circumference slightly smaller than the circumference of the molded product, and the molded product is inserted into this cylindrical shape. This is a method of decorating the surface of a molded product with characters, figures, symbols, etc. by utilizing its elasticity.

However, this method has the following drawbacks because the decorative film is expanded and contracted during production. In other words, ■ When printing is performed continuously on the surface of a film to form characters, symbols, figures, etc. on the film, the distance between each pattern is not constant, resulting in misalignment of the design. When coating the surface, it is not possible to form a pattern at a predetermined position on the molded product. Furthermore, in the case of multicolor printing, the registration accuracy between each color is extremely poor, making beautiful multicolor printing virtually impossible. However, it has disadvantages such as being impossible and having a significantly inferior design effect.

In view of the above-mentioned problems, the present inventor conducted various studies and experiments in an attempt to solve these problems, and as a result, the present invention was completed. That is, the present invention provides a method of providing a release layer on a non-stretchable base sheet, providing a pattern layer thereon, laminating a self-stretching film thereon, and then peeling off the base sheet. This is a method for producing a decorative film.

Hereinafter, the present invention will be explained in more detail using the drawings.

Any non-stretchable sheet-like material can be used as the base sheet 1, and for example, a biaxially stretched polyethylene terephthalate film or the like can be used. The base sheet 1 may be coated with wax in order to improve its peelability from the pattern layer. In addition, if an embossed pattern or a hairline pattern is required on the surface of the pattern to be formed, or if a matte pattern is required, an embossed pattern or a hairline pattern is formed on the sheet-like material as the base sheet. It is preferable to select and use a material, a material printed and coated using mud ink, a cape film, etc. as appropriate.

Next, a release layer 2 is provided on the base sheet 1.

This release layer is preferably formed by printing and applying an acrylic, chlorinated rubber, cellulose or modified olefin resin.

Next, a pattern layer 3 is provided on the release layer 2. For this pattern layer, appropriate characters, symbols, figures, etc. may be formed by printing means using ink with excellent elasticity. This pattern layer 3
A pattern having a metallic luster may be created by appropriately combining it with a metal vapor deposited film layer (not shown).

Next, a self-stretching film 4 is dry laminated on this pattern layer 3 (see FIG. 1). The method of dry laminating is to first apply a curable polyurethane, imine-based adhesive, etc. on the release layer 2, pattern layer 3, etc., heat and dry it, and then overlay the self-stretching film 4 and press it. good. As the self-stretching film, any plastic film can be used as long as it has a restoring force of about 20 to 50% when stretched at room temperature, such as polyethylene film, nylon film, etc.

After dry lamination, the base sheet 1 is peeled off (see FIG. 2). By doing so, a decorative film having characters, symbols, and figures can be obtained.

When using the decorative film 5 obtained according to the present invention, first the decorative film is formed into a cylindrical shape. In this case, the circumference of the film is the circumference (outer circumference) of the molded product.
It is formed into a cylindrical shape having a circumference about 3% to 5% smaller than the above. Thereafter, it is preferable to insert the molded product into this while stretching the film.

In addition, since the self-stretching film used in the present invention has elasticity even at room temperature, it has excellent fitting properties for molded products, and molded products that can be used are suitable regardless of whether they are flexible or inflexible. It is something.

Since the method for producing a self-stretching film having a pattern according to the present invention has the structure described above, it has the following effects. That is, since characters, symbols, figures, etc. are formed on a base sheet that does not have elasticity, the patterns can be easily formed at predetermined positions, and also in the case of multicolor printing. The registration between each color can be easily and accurately performed. Furthermore, it is easily possible to combine a metal vapor deposition film with the pattern layer in order to create a metallic luster. Furthermore, the process of attaching the decorative film obtained by the present invention to a molded product is extremely easy, and its productivity is excellent. Therefore, the present invention can be used for various purposes and has extremely high industrial utility value.

[Brief explanation of drawings]

FIGS. 1 and 2 are schematic cross-sectional views showing each step of an embodiment of the present invention. In the figure, 1--Base sheet, 2--Peeling layer, 3--Design layer, 4-Self-stretching film 5--Decorative film Patent applicant Japan Photo Printing Co., Ltd. Figure 1 Figure 2

Claims (1)

[Claims] (1) A release layer is provided on a non-stretchable base sheet, a pattern layer is provided on top of the release layer, a self-stretch film is further laminated on top of the release layer, and then the base sheet is peeled off. Method of manufacturing decorative film.