JPS6087038A - Film stick processing method - Google Patents

Abstract

PURPOSE:To prevent the generation of wrinkle at the corner part or angle part of film base material by a method wherein a film is disposed in tension contacting to the upper part of a frame arranged around a base material and a film is sticked on the surface of the base material. CONSTITUTION:A base material 2 is arranged in the inner part of a closed frame 1 and a vinyl chloride resin film 3 is provided with drawing tension on each side adjoining on the upper part of the frame, and the space surrounded by the frame and the film 3 is reduced pressure by a vacuum pump 4. Due to the reduction of pressure, the film 3 is pressed to the projected parts 5 of a stump, and furthermore to the slant surface, and the base material surface and the film 3 are sticked in unit by adhesive agent applied on the base material surface 2. Tension is given to the film 3 when it is contacted and adhered to the slant line 7, and the film is extended, so it is prevented from shrinking.

Description

[Detailed description of the invention] The present invention relates to a method for applying a film to the surface of a substrate.

Conventionally, when a decorative film was pasted on the surface of the base paulownia of a molded or processed material, the film wrinkled at the corners of the base material, making it difficult to finish the corners.

The present invention solves such drawbacks by arranging a frame at a predetermined distance around the halo, stretching a film in contact with the upper part of the frame, and applying the film to the surface of the base material by vacuum forming. The purpose of the present invention is to provide a method for pasting film IIv film, which is characterized by the following:

The present invention will be explained according to the drawings of one embodiment (Figs. 1 and 2). A base material (2) is placed inside a closed frame (1), and the upper part of the frame (1) is in contact with the base material (2). The frame (1) is stretched while applying tension to each side of the vinyl chloride resin film (3).
The space surrounded by the film (3) and the film (3) is depressurized by the vacuum pump (4). The vacuum film (3) has a trapezoidal convex part (
5) The film (3) is further pressed onto the inclined surface (6), and the surface of the base material (2) and the film (3) are bonded together by the adhesive applied to the surface of the base material (2). When the film (3) comes into contact with the inclined line (7) and is bonded, tension is applied to the film and the film is stretched, so there is no wrinkles. Films attached to the surface of the base material include thermoplastic resin films such as polyester, acrylic, and polypropylene that stretch at room temperature or under heat, flexible and visible polyester cosmetic materials, and diallyl reflex resin cosmetic coatings. It can be used if it is made. The thickness of the film may be selected depending on the lamination processing conditions, but preferably 50 to 200 mm. If the thickness is less than 5, the film thickness may become thin due to elongation during pasting, the desired surface quality may not be obtained, or the film may break, which is undesirable. Moreover, if it is more than 200/LA, it is not preferable because the elongation of the film is poor and excessive pressure and suction are required. Film tensioning methods include applying tension only to the corners of the film, applying tension to part of each side of the film, and applying tension to the entire periphery of the film, depending on the shape and unevenness of the base material. Can be adopted depending on the situation.

Although a quadrangular trapezoidal base material was used in the above embodiment, the shape of the base material may be triangular, polygonal, or round, and the irregularities of the base material may be those with a concave center (Fig. 4), A shape with a plurality of convex portions (FIG. 3), a shape with a plurality of concave portions, etc. are also used.

Further, a plurality of base materials may be arranged within the frame.

According to the film adhesion processing method according to the present invention, the film is wrinkled at the right place of the film (part of the corner of the base material, in order to adhere the film to the base material while applying core tension and stretching the film). Machining can be carried out with no distortion and a good finished appearance.

[Brief explanation of the drawing]

Figure 1 is a cross-sectional view of a trapezoidal base material (2) placed in the center of the frame (1) and a vinyl chloride resin film (3) stretched over the frame. 1) is a plan view of a trapezoidal base material (2) placed in the center; FIG. 3 is a plan view of a base material with a plurality of convex portions; FIG. 4 is a cross-sectional view of a base material with a concave center;
Figure 5 is a cross-sectional view of a plurality of base materials (2) arranged within the frame (1), Figure 6 is a plan view of the film with tension applied to the corners, and Figure 7 is a cross-sectional view of each of the film. It is a top view of a state where tension is applied to a part of the side. 1 A... Frame 2', 2'''... Profit 3
', 3'': +... Film 5... Trapezoidal convex portion 6... Inclined surface 7... Inclined line 5--4<
c (-, -yv 2% fuhe, French patent applicant Aikanigyo Co., Ltd.) Figure 3.

Claims (1)

[Claims] A film pasting processing method characterized by arranging a frame around a base material, stretching a film in contact with the top of the frame, and pasting the film onto the surface of the base material by vacuum forming.