JPS5914938A - Interior finish cloth for car which can be welded by high frequency - 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 The present invention relates to a high-frequency weldable vehicle interior fabric used for vehicle seats, door trims, sun visors, etc.

BACKGROUND OF THE INVENTION Examples of conventional vehicle interior fabrics include those shown in FIG. That is, there is a fabric 1 used for interior decoration in which a pack coating material 3, which is mainly a thermoplastic liquid resin, is applied to the back side of the fabric 1 (FIG. 1). There is also a fabric in which a polyjB vinyl sheet 4 is further adhered to the back side of the fabric having the above structure using an adhesive 2. (Figure 2).

Conventional vehicle interior fabrics of this type are used by sandwiching an elastic material such as urethane between the fabric and a nonwoven fabric or a hitch and welding it using high-frequency heating to fix the fabric, nonwoven fabric, and hitch. There is. For example, door trims are used by sandwiching an elastic material such as urethane between a hardboard and a vehicle fabric and welding the material using high-frequency heating to fix the fabric and hardboard. However, interior materials using such fabrics must pass heat resistance (MVSS Section 302) from the standpoint of respecting human life, and generally a heat resistant back coating material is used. Since this back coating uses a polyester with a high melting point that does not easily generate heat, it was difficult to fix it even if processed by high frequency welding because the melting points of other members were relatively low.

On the other hand, in recent years there has been a growing demand for interior materials with improved light resistance and texture (softness, firmness).

However, since this polyester thread also had a high melting point, it was difficult to fix it to other E'JI +A.

Furthermore, in recent years, there has been a trend toward using fabrics with uneven surfaces due to the demand for interior materials with patterns. It has been difficult to fix such fabrics to other members because the pressure applied during melt bonding during high-frequency welding processing is not uniform for fabrics with non-uniform skin.

This invention was made by focusing on such conventional problems, and it is possible to improve the fabric back side or fabric lining of fabrics treated with flame retardant treatment, fabrics using polyester threads, fabrics with large differences in thickness and density, etc. An ethylene-vinyl acetate copolymer film containing vinyl with good high-frequency weldability, a low melting point, good texture (softness, low waist), and rubber elasticity is applied to the resin-treated surface of the The purpose is to solve the above problems by performing melt adhesive processing.

The present invention will be explained below based on the drawings.

FIG. 3 and FIG. 4 are diagrams showing an embodiment of the present invention.

First, to explain the structure, FIG. 3 shows a cross section of the fabric 9 with EVA, which has an extremely thin thickness of 0.03 mm -0 on the back side of the fabric 1 used for seats, 1 to rim covers, door trims, or sun visors. , a resin film of about 30 mm, made of ethylene acetate and neal copolymer (hereinafter referred to as E).
The film 7 (referred to as V△) is melt-bonded.

The cross-sectional view of the fabric 11 in FIG. EVA film 7, which is an extremely thin resin film, is melt-bonded to the film.

FIGS. 5 and 6 are cross-sectional views when the EVA-applied fabrics 9 and 11 are used for seats, trim covers, door trims, sun visors, etc. Figure 5 is the EVA of Figure 3.
(A lining 15 made of non-woven fabric or gold mine is attached to the J fabric 9 via an elastic body 13 such as urethane. The processed portion 17 with the lining 15 is welded to each other by a high-frequency welder that performs high-frequency heating, and has a concave shape. FIG. 6 shows the fabric 11 with FVA shown in FIG. is attached.Elastic body 13
The processed portions of the EVA-applied fabric 11 and the lining 15 that are pressed together are welded together using a high-frequency welder or the like, and have a concave shape.

FIGS. 7 and 8 are cross-sectional views of the EVA fabric 9.11 shown in FIGS. 3 and 4 fixed to a plate material 19 such as a hardboard of a door trim. In FIG. 7, the EVA-applied fabric 9 shown in FIG. 3 is attached to a plate material 19 via an elastic body 13 made of urethane or the like. The processed portion 21 of the EVA-applied fabric 9 via the elastic body 13 is fixed while being pressed in a concave shape toward the plate material 19 by a high-frequency welder or the like that performs high-frequency heating. In FIG. 8, the EVI fabric 11 shown in FIG. 4 is attached to a plate material through an elastic body 13 made of urethane or the like.

Processed portion 21 of EVA-applied fabric 11 via this elastic body 13
is fixed while being pressed in a concave shape toward the plate material 19 by a high-frequency welder or the like that performs high-frequency heating.

Figures 9 and 10 are the EV A of Figures 3 and 4 above.
(1) This is a cross-sectional view when the fabrics 9 and 11 are used for a sun visor. In Fig. 9, an elastic body 13 such as urethane is inserted between the EVA-covered fabrics 9 in Fig. 3, and both EVA-covered fabrics 9 are placed in a bag. The fabric and the processed portion 23 of the fabric are fixed via the elastic body 13 using a high-frequency T-ruder or the like that performs high-frequency heating.
An elastic body 13 such as urethane is inserted between the fabrics 11, and both EVA-attached fabrics 11 are fixed in a bag shape. The fabric and the processed portion 23 of the fabric are fixed via the elastic body 13 using a high-frequency welder or the like that performs high-frequency heating.

Next, the effect will be explained.

In the manufacturing process of the seat trim cover shown in FIGS. 5 and 6, first, EVA-coated fabric 9 is prepared by melt-bonding EVA film 7 to the back side of fabric 1 used for interior decoration, or resin 3 is applied to the back side of fabric 1. EVA (=I fabric fabric 1
1 is created. Next, the EV△ film is superimposed on the surface of the elastic body 13 laid on the lining 15 of the fabrics 9, 11 which have been melt-adhesively processed. Thereafter, they are successively pressed and welded using a high-frequency welder that performs high-frequency heating. As described above, the seat trim cover using the EVA film 7 melts and adheres strongly even if it is thin, so there is no peeling of the welded portion unlike when the FVA film is not used.

Furthermore, the occurrence of peeling caused by abrasion of the sewing thread exposed on the surface, as in the case of sewing, is eliminated. Moreover, since the EVA film is a thin layer and uses EVA-coated fabric compared to the conventional thick back coating, the cost can be reduced.

In order to fix the fabric to the plate material 19 such as hardboard used for the door trim shown in FIGS.
The back side of the fabric is coated with resin 3, and an EVA film is further melted and bonded to produce a fabric. Next, the fabrics 9 and 1 are placed on the surface of the plate material 19 on which the elastic body 13 is laid.
Overlap 1. Thereafter, they are successively pressed and welded using a high-frequency welder or the like that performs high-frequency heating.

In this way, fabrics using FVA film 7 can be made by laminating fabrics and other films directly without using adhesives, unlike conventional methods that use adhesives to laminate fabrics and other films. Because you can make it go down from 1 to 1,
In addition, there is an advantage that the black color is in the opposite direction. Furthermore, since an extremely thin film with EVA is used and bonded by melting, the cost is lower than that of conventional thick pack coating materials. Also, ``■Δ film is extremely thin, so
It follows the uneven surface of the fabric, making it easy to adhere even to uneven fabrics.

As explained above, according to the present invention, the construction is made of a vehicle interior fabric in which an ethylene m-vinyl acid copolymer film is melt-adhered to the back side of the fabric or the resin-treated side of the back side of the fabric. Welding processing using high-frequency welding, etc., which performs high-frequency heating, can be greatly improved for flame-treated fabrics, fabrics using polyester threads, fabrics with different thicknesses or densities, and fabrics whose back side has been processed. It is something that can be done.

[Brief explanation of drawings]

Figures 1 and 2 are cross-sectional views of conventional interior fabric, Figure 3 is a cross-sectional view of the EVA-applied fabric of the present invention, and Figure 4 is a cross-sectional view of the conventional interior fabric shown in Figure 1 with an EVA film adhered to it. , Fig. 5 is a sectional view of the seat 1 to rim cover using the fabric shown in Fig. 3, Fig. 6 is a sectional view using the fabric shown in Fig. 4, and Fig. 7 is a sectional view using the fabric shown in Fig. 3. Sectional view of door trim, No. 8
The figure is a cross-sectional view of a sun visor using the fabric shown in Figure 4, Figure 9 is a cross-sectional view of a sun visor using the fabric shown in Figure 3, and Figure 10 is a cross-sectional view of a sun visor using the fabric shown in Figure 4.
FIG. 3 is a cross-sectional view of the sun visor using the figure. (Explanation of symbols representing main parts of the drawings) 1...Fabric 3...Resin 7...Ethylene vinyl acetate copolymer film (EVA film) Fig. 1 1 1 Fig. 4 1 Fig. 7 Figure 8 Figure 9. 3 ・1st θ Figure 1 1313'/ 198-

Claims (2)

[Claims] (1) A vehicle interior fabric capable of high frequency welding, characterized in that an ethylene vinyl acetate copolymer film is melt-adhesively processed on the back side of the fabric or the resin-treated side of the back side of the fabric. (2) The high frequency weldable vehicle interior fabric according to claim 1, wherein the ethylene vinyl acetate copolymer film has a thickness in the range of 0.03 mm to 0.30+nn+.