JPS6233693A - Manufacture of cover block for cover body or case or the like - 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 (Field of Industrial Application) The present invention relates to a method for manufacturing a cover for a 7-isle, a binder, etc., or a cover for a case such as a cassette storage case.
Special feature ζ; Relates to the method of fixing the edge.

(Prior art) The conventional general manufacturing method for file covers, for example, is the second method.
As shown in Figure 1: First, (a) overlap the core plate (1) and the inner sheet (2), and cut a folding margin (3a) of the required width on the side edge of the outer sheet (3). There is also a method of applying glue (4) along the inside and pasting double-sided adhesive tape. ), then (b) attach the lower surface of the core plate (1) to the outer sheet (3) at 8 (4), with the two ends touching and pasting. ) Apply glue (4) r on the top surface of ), and then fold the folding margin (3a) of the outer sheet (3) coated with (C) glue (4)' onto the inner sheet (2).
Fold it back to the top side and apply polymerization, and finally, (a) sew along the overlapped part (2) of the folding margin (3a) ((5) in the figure shows the suture line). It was to be accomplished.

(Problems to be Solved by the Invention) In the conventional manufacturing method described above, the inner sheet (2) and the outer sheet (3) are first fixed by gluing, which results in poor work efficiency. In order to tightly secure the side edges of the plate (1) so that they do not loosen, skill is required to fold and crimp the folding margin (3a) with the folding margin (3a) strongly pulled, which is difficult to do. (This work becomes especially difficult when inserting an elastic body such as a sponge between the core plate (1) and the outer sheet (3) to obtain a soft touch), and the inner surface Sheet (2) and outer sheet (
3) is bonded with only glue (4)' (2), so there are problems such as the need for additional stitching (2 (d)) for reinforcement.The present invention solves such problems. The purpose is to solve the following problems.

(Means for Solving the Problems) In order to solve the above problems, the method for manufacturing a cover body or a top plate of a case, etc. of the present invention is based on a thermoplastic synthetic resin sheet (=
The core plate and the elastic body are polymerized, and then a piece of leather with a size that extends from the outer edge of the core plate by the folding area is coated on it, and then a thermoplastic synthetic resin sheet is coated along the outer edge of the core plate. After high-frequency welding with the leather, remove the thermoplastic synthetic resin sheet on the lower side of the folded edge of the leather, and then press the folded edge of the leather back over the lower surface of the thermoplastic synthetic resin sheet C to attach it. It is configured as a feature.

(Example) FIG. 1 shows a manufacturing process diagram using a sectional view of an embodiment of the present invention, and the embodiment will be described below.

First, (3) lay a soft vinyl chloride sheet (6), which is a thermoplastic synthetic resin, as an inner sheet at the bottom C;
The sponge sheet (8) as an elastic body is further polymerized, and a hard paper (extending outside C2 from the outer edge of the force) is placed on top of it by the folding margin (9a). Cover the leather (9) as an outer sheet of the same size.Next, (to)) the upper electrode α■ of the high frequency welder
is placed at position C2 along the outer edge of the hard paper (7), and the vinyl chloride sheet (6) and the leather (9) are high-frequency welded (aυ in the figure indicates the high-frequency welding location). +C) The end piece (6a) of the vinyl chloride sheet (6) existing on the lower surface side of the folding allowance (9a) of the leather (9) is high-frequency welded (the outer boundary part of the high-frequency welding point a1 where the thickness is thin) Peel it off and apply saz to the bottom side of the vinyl chloride sheet (6) by the width of the folding margin (9a) of the sheet leather (9) (you may apply double-sided adhesive tape or the like to the sheet instead of glue). Last C:,
This is completed by folding the folding margin (9a) of the leather (9) over the lower surface of the vinyl chloride sheet (6) serving as the inner sheet and attaching it as is.

(Operations and Effects) The present invention has the above configuration, and first, in the conventional manufacturing method, the inner sheet (2) and the outer sheet (3) were fixed with adhesive C2. On the other hand, in the manufacturing method of the present invention, the thermoplastic synthetic resin sheet as the inner sheet and the leather as the outer sheet are high-frequency welded.
The process of applying glue, which was necessary in the conventional production method C2, is no longer necessary, making the work easier and faster, and the thermoplastic synthetic resin sheet as the inner sheet and the leather as the outer sheet are not glued. Because they are integrated by high-frequency welding, their adhesion is stronger, eliminating the need for reinforcement by stitching, etc., as in the past.Also, in order to ensure a tight seal without loosening the side edges, conventional manufacturing methods The folding margin (3a) was held in a strong tension state and required skill to be crimped.However, according to manufacturing method C2 of the present invention, the side edges are tightly determined by high-frequency welding, so that the folding margin (3a) is not folded. It has the effect of making work easier by simply pasting it on, thereby improving work efficiency and product quality.

[Brief explanation of drawings]

Figure 1 is a manufacturing process diagram with a cross-sectional view of the embodiment of the present invention;
The figure is a perspective view of the manufacturing process of a conventional example. (1) Core plate, (2) Inner sheet, (3)
...Outer sheet, (3a)...Folding allowance, (4) (4
)'...glue, (5)...suture line, (6)...vinyl chloride sheet, (6a)...end piece, (7)...hard paper, (8)... sponge sea), (9)...shif-
, (9a)...Folding allowance, wire...electrode, I...high frequency welding location, α2...glue, 0...double-sided adhesive tape. ≦ Written amendment of large O/RO procedure dated October 23, 1985 1, Indication of the case 1985 Patent Application No. 174589 2, Title of the invention Method for manufacturing a front cover or case etc. 3, Person making the amendment Case Relationship with Patent Applicant: 3-6-29 Rokucho, Adachi-ku, Tokyo, Eiwa Co., Ltd. Representative Director: Takashi Yanagise 4, Agent's Corrected Specification Name of the Invention Method for manufacturing the front cover or case, etc. Claims: A core plate and an elastic body are polymerized on a thermoplastic synthetic resin sheet, and then leather is coated on top of the core plate and has a size that extends from the outer edge of the core plate by the folding area, and the leather is stretched along the outer edge of the core plate. After high-frequency welding the thermoplastic synthetic resin sheet and the leather, the thermoplastic synthetic resin sheet below the folded area of the leather is removed, or the core plate and the elastic body are polymerized on the thermoplastic synthetic resin sheet to form the core plate. A high-frequency voltage is applied to the thermoplastic synthetic resin sheet along the outer edge of the sheet to remove the outer edge, and then a piece of leather is coated on the upper surface of the elastic body with a size that extends from the outer edge of the core plate by the folding area. and the thermoplastic synthetic resin sheet described above are high-frequency welded, and then the folding margin of the leather is folded back and pasted or sewn onto the bottom surface of the thermoplastic synthetic resin sheet. Method of manufacturing the front plate. Detailed Description of the Invention (Field of Industrial Application) The present invention is a method for manufacturing a cover for a file or binder, or a cover for a case such as a cassette storage case.
Especially regarding the method of fixing the edges. (Prior art) For example, the conventional general manufacturing method for file cover bodies is the fifth method.
As shown in the figure, first, (a) the core plate (1) and the inner sheet (2) are superimposed, and a folding margin (3a) of the required width is made at the side edge of the outer sheet (3). Glue (4) along
) is also used to apply double-sided adhesive tape. ), then (b) the lower surface of the core plate (1) is brought into contact with the glue (4) application area of the outer sheet (3) and adhered, and the upper surface of the folding margin (3a) of the outer sheet (3) is attached. Glue (4)'
(c) Fold the folding margin (3a) of the outer sheet (3) coated with glue (4)' onto the upper surface of the inner sheet (2) and apply polymerization, and finally (d) Turning allowance (3a
) (in the figure, (5) indicates the suture line). (Problems to be Solved by the Invention) In the conventional manufacturing method described above, the inner sheet (2) and the outer sheet (3) are first fixed by gluing, which results in poor work efficiency. In order to tightly fix the side edges of the plate (1) so that they do not loosen, it is necessary to have the skill of folding and crimping the folding margin (3a) with the folding margin (3a) strongly pulled, which can be difficult. Is there a problem with the large size (if an elastic body such as a sponge is inserted between the core plate (1) and the outer sheet (3) in order to obtain a soft touch, the work becomes more difficult)? The purpose of the present invention is to solve these problems. (Means for Solving the Problems) In order to solve the above problems, the method for manufacturing a cover body or a face plate of a case, etc. of the present invention includes polymerizing a core plate and an elastic body on a mature plastic synthetic resin sheet. On top of that, is there only a folding allowance on the outer edge of the core plate? ) After cutting the leather to the extent that it will extend and high-frequency welding the thermoplastic synthetic resin sheet and the leather along the outer edge of the core board, remove the thermoplastic synthetic resin sheet below the folded area of the leather, or A core plate and an elastic body are polymerized on a thermoplastic synthetic resin sheet, a high frequency voltage is applied to the thermoplastic synthetic resin sheet along the outer edge of the core plate, the outer edge is cut off, and a core is placed on the upper surface of the elastic body by the folding area. A piece of leather extending from the outer edge of the board is coated, and the leather and the thermoplastic synthetic resin sheet are high-frequency welded, and then the folded portion of the leather is folded onto the bottom surface of the thermoplastic synthetic resin sheet. It is constructed in such a way that it can be turned over and pasted or sewn. (Example) Figures 1 and 2 are cross-sectional views of manufacturing process diagrams showing examples of the present invention, respectively.
The figure is a cross-sectional view of a finished product obtained by using the suturing process using threads, and examples of these will be described below. <Embodiment shown in Fig. 1> First, a soft vinyl chloride sheet (6), which is a thermoplastic synthetic resin, is laid at the bottom as an inner sheet, and on top of that, a hard paper (7) as a core plate is glued on both sides. At the same time, the sponge sheet (8) as an elastic body is further polymerized and a folding margin (9a) is placed on top of the sponge sheet (8) as an elastic body.
The hard paper (7) is coated with a leather (9) as an outer sheet having a size extending outward from the outer edge of the hard paper (7). (Figure A) Next, attach the upper electrode ell of the high frequency welder to hard paper (7).
Place the vinyl chloride sheet (6) along the outer edge of the
and the laser (9) are high-frequency welded (Uυ in the figure indicates the high-frequency welding location). (Figure B) Then, the end piece (6a) of the vinyl chloride sheet (6) existing on the lower surface side of the folding margin (9a) of the leather (9) is high-frequency welded, and the outer part of the high-frequency welding point αυ is made thin. Peel it off and apply glue to the bottom side of the vinyl chloride sheet (6) by the width of the folding margin (9a) of the razor (9) (you may also apply double-sided adhesive tape, etc. to the sheet instead of a). . (Figure 0) Finally, the folding margin (9a) of the leather (9) is folded back onto the lower surface side of the vinyl chloride sheet (6) serving as the inner sheet, and the sheet is completed by pasting it as it is. (Fig. D) <Example shown in Fig. 2> First, a soft vinyl chloride sheet (6) made of thermoplastic synthetic resin with a large size (like the hard paper described later) is laid at the bottom as an inner sheet, and then A hard paper (7) as a core plate is placed with its ends fixed with double-sided adhesive tape 0, and a sponge sheet (8) as an elastic body is polymerized. (Figure A) Next, the upper part of the high-frequency welder is applied to a position along the outer edge of the hard paper (7), and the outside thereof is cut off by fusing. (Figures B-1 and B-2) Further, a leather (9) as an outer sheet having a size extending outward from the outer edge of the hard paper (7) by the folding allowance (9a) is coated thereon, Next, apply the upper electrode part of the high-frequency welder to the position along the outer edge of the hard paper (7), and apply the vinyl chloride sheet (6).
) and the laser (9) are high-frequency welded (Uυ in the figure indicates the high-frequency welding location). (Figures C-7 and C-2) Next, the leather (9) is placed on the bottom surface of the vinyl chloride sheet (6).
Apply glue (L6) to the width of the folding margin (9a) (you may also attach double-sided adhesive tape, etc. to the folding edge). (Figure C-3) Finally, fold the leather (9) The sheet (9a) is completed by folding over the bottom surface of the vinyl chloride sheet (6) as an inner sheet and pasting the sheet (11). In the example, the folding margin (9a) of the leather (9), which was folded and attached to the bottom side of the vinyl chloride sheet (6), was attached to the vinyl chloride sheet (6) using glue α2, and then the leather ( The non-folded part of 9) is sewn to the sponge sheet (8), hard paper and vinyl chloride sheet (6) with thread α4. It leather (9) is made by folding the folding margin (9a) of the leather (9) onto the bottom side of the vinyl chloride sheet (6) without using
), sponge seam) (8), hard paper and vinyl chloride seam) (6) sewn with K thread I. (Operations and Effects) The present invention has the above configuration, and in the conventional manufacturing method, the inner sheet (2) and the outer sheet (31
was fixed by gluing, whereas in the manufacturing method of the present invention, the thermoplastic synthetic resin sheet as the inner sheet and the leather as the outer sheet are high-frequency welded, which is not necessary in the conventional manufacturing method. This eliminates the need to apply glue, making the work easier and faster. Furthermore, the thermoplastic synthetic resin sheet serving as the inner sheet and the leather serving as the outer sheet are integrated by high-frequency welding rather than gluing. The fixing force is stronger, and in order to tightly fix the side edges without loosening, the conventional manufacturing method requires skill, such as folding and crimping with the folding margin (3a) strongly pulled. However, according to the manufacturing method of the present invention, the side edges are tightly determined by high-frequency welding, which makes the work easier.This improves work efficiency and improves the quality of the product. It also has the effect of increasing the BRIEF DESCRIPTION OF THE DRAWINGS FIGS. 1 and 2 are cross-sectional views of manufacturing process diagrams of embodiments of the present invention, and FIGS. 3 and 4 are cross-sectional views of finished products obtained by different embodiments, respectively. FIG. 5 is a perspective view of the manufacturing process of a conventional example. (1) Core plate, (2) Inner sheet, (3)
...Outer sheet, (3a)...Folding allowance, (4) (4
) '... Glue, (5)... Suture line, (6)... Vinyl chloride sheet, (6a)... End piece, (7)... Hard paper, (8)... Sponge sheet, (9)...leather, (9a)...folding allowance, α@...electrode, σD...
-High frequency welding point, α2...glue, 13...double-sided adhesive tape, I...thread.

Claims (1)

[Claims] A core plate and an elastic body are polymerized on a thermoplastic synthetic resin sheet, and then a piece of leather is coated on top of it with a size that extends from the outer edge of the core plate by the amount of folding, and then a thermoplastic resin sheet is coated along the outer edge of the core plate. After high-frequency welding the synthetic resin sheet and the leather, the thermoplastic synthetic resin sheet below the folding area of the leather is removed.
A method for producing a front plate for a cover body or a case, etc., characterized in that the folding margin of the leather is then folded back and adhered to the lower surface of a thermoplastic synthetic resin sheet.