JPH0434438B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention is utilized for seat bodies used in vehicles, general furniture, and the like.

Conventional technology A conventional molded seat body is made by heating a skin fixed to the outer periphery of the lower mold between an upper mold and a lower mold having a mold surface of the same shape as the surface of the cushion body, and pressing it with the upper mold. The surface of the formed skin is formed by molding it into the surface shape of the cushion body, then once the upper mold is released upward, and the surface of the molded skin is
Adhesive is applied to both or one of the surfaces of the cushion body such as a skinless mold or slab material using a spray gun or brush, and then the molded shape of the skin and the shape of the cushion body are matched, and the cushion body is molded using an upper mold. It was made by pressing and adhering to the epidermis and the cushion body.

Problems to be Solved by the Invention The following points can be cited as drawbacks of the seat body according to the above-mentioned prior art.

a) Since the adhesive is applied with a spray gun or brush, it is difficult to make the amount of adhesive adhered evenly, and areas where there is a lot of adhesive will become hard with blotches on the skin, and the appearance will change. This is bad, and it also impedes breathability. Conversely, if the amount applied is too small, the adhesion is insufficient and the epidermis often peels off.

b. The cost of equipment to spray the adhesive and the cost of sanitary measures for workers are high. Also,
The process from spraying to adhesion requires a lot of man-hours.

c Adhesives, such as urethane adhesives, take longer to complete adhesion when the outside temperature is around 18℃.
It takes about 45 seconds, but at about 5 degrees Celsius it takes longer to about 60 seconds. Therefore, more costs are required to take measures against low temperatures in the working environment.

d If the adhesive is not bonded within the specified time after spraying,
Adhesion is weak or no longer available.

e The conventional machine-sewn trim cover with a three-dimensional appearance with uneven surface using a skin with little stretch is made by cutting the skin from a three-dimensional flat surface and sewing it three-dimensionally with a sewing machine. However, these operations and further bonding the trim cover to the surface of the same type of urethane mold require skill and a lot of man-hours.

Means for Solving the Problems The present invention provides a seat body that solves the above-mentioned problems.The present invention provides a seat body that solves the above-mentioned problems. It consists of an outer skin molded in the same shape as the front surface, and a fused fabric molded and held in the same shape as the outer skin on the back side of the outer skin, and by heating and melting this fused fabric, the above-mentioned cushion body and the above-mentioned outer skin are bonded together. It has a seat body that is tightly glued together.

Effects According to the present invention, it is possible to obtain a seat body with a beautiful appearance in which the skin and the cushion body are easily bonded together, and the bonding is even and uniform.

Embodiments Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings, including their configurations and the order of processing.

In the first embodiment, in the process shown in FIG. 1, the outer skin 1 is turned over and attached to the outer periphery of a lower mold 6, which has a mold surface on its upper surface that is exactly opposite in shape to the outer shape of the sheet.

In the next step shown in FIG. 2, the skin 1 attached to the lower mold 6 is heated by the heater 7 placed close to the upper part of the lower mold 6.

In the step shown in FIG. 3, the skin 1 heated in the above step is compressed with an upper mold 8 having an opposite shape to the lower mold 6, that is, the same shape as the outer shape of the sheet.
Form into the desired shape of the sheet.

In the process shown in FIG. 4, the skin 1 formed in this manner remains attached to the lower mold 6, and the fusion cloth 2 is placed on the required portion thereof.

Next, in the step shown in FIG. 5, the upper mold 8A is aligned over the fusion cloth, and the cloth is pressurized and heated. Then, the fusing cloth 2 is deformed and molded.
The heaters 9 inside the lower mold 6 and the upper mold 8A are used to heat and shape the fusing cloth 2. The temperature at which the fusing cloth 2 is heated (but not melted) and formed is lower than the temperature at which the skin 1 is heated and formed by the heater 7 .

Finally, in the step shown in FIG.
(Fig. 5), insert the cushion body 3 made of a skinless urethane mold or a cut-molded urethane slab, and the press die 10 and the lower die 6 through the positioning pin 11.
The cushion body 3 is compressed by aligning the position with the mold 10 and compressing the outer skin 1.
and the cushion body 3 are fused together by melting the fusion cloth 2 by the heat of the heater 9. This completes the sheet. The skin 1 does not melt at the melting temperature of the fusing cloth 2. In addition, the code|symbol 6A shows the convex part of the lower mold|type 6. Since it protrudes here, the temperature is lower than that of other parts of the mold, so the back side is made into a recess to improve heat conduction and prevent the temperature of the convex part 6A from dropping. In each of the above figures, the upper molds 8, 8A and the lower mold 6 may be made into a porous shape or have a large number of small holes, and instead of the heater 9, high-temperature steam or gas may be passed through to heat the skin 1 and the fusing cloth 2. good.

FIG. 7 is a sectional view of the sheet taken out from the mold after completion of the process shown in FIG. 6 and inverted. Since the fusing fabric 2 is actually melted into the skin 1 and the cushion body 3, the illustrated layer of the fusing fabric 2 is thin;
By melting or breaking when heated, it provides air permeability between the urethane mold or slab and the skin after treatment.

Next, FIGS. 7 to 9 show the structure of the seat body according to the present invention.

The epidermis 1 is a single, stretchable epidermis. However, although not shown, two different skins may be used for necessary parts. This uses a skin with less elongation for areas that do not require elongation, and a skin with more elongation for areas that require more elongation. Alternatively, like a general trim cover, two or more types or one piece of skin with little elongation may be cut three-dimensionally from the beginning, or may be combined. Alternatively, it is also good to use skins of two or more colors.

The fusing cloth 2 is made of fibers such as knitted fabric, non-woven fabric, net-like fabric, or paper-like fiber. An example of a material used for a seat body is one that deforms or fuses at temperatures of 80 to 150°C, the fused part does not become hard even after welding, and the material satisfies the required temperature. For example, a nylon-based material with the trade name Nylon Half or Melt Wave may be used.

If the urethane mold used as the cushion body is a skinless mold, the skin will not peel off from the skin on the surface of the urethane mold after adhesion, unlike in the case of a skinned mold. A mold with a skin may be used as long as the required bonding part is a mold without a skin or with the skin removed.

The slab 4 in FIG. 8 is partially placed on the cushion body 3, and has a lower specific gravity than the urethane mold, giving it a soft feel.

The molded slab 5 or urethane mold shown in FIG. 9 has the same purpose as the case shown in FIG. 8, which is to improve riding comfort. The urethane mold may partially have a different specific gravity. In the drawings above, urethane molds, slabs, etc. were used, but other cushion materials can also be used.

Effects of the Invention The seat body according to the present invention has the following effects.

a All the disadvantages mentioned at the beginning compared to the use of conventional adhesives are eliminated.

b. It is more accurate and easier than spraying because the fusing cloth 2 need not be placed in areas where adhesive is not needed.

c When gluing the bag-shaped skin of the front back (back of the front seat) to the urethane mold,
It is difficult to spray adhesive uniformly at a predetermined position inside a bag, but according to the present invention, it can be done accurately and easily by temporarily fixing the adhesive cloth to the mold or skin. I can do it.

d The thickness, melting point, etc. of the fusing fabric can be selected depending on the material of the fusing fabric, so the required fusing strength or adhesion suitable for the material shape of the skin is better than the seat body using the spray method. Are better.

Note that the present invention is not limited to seat bodies, but can be applied to interior products such as door pads, other parts of vehicle interiors, and furniture, and has a wide range of uses.

[Brief explanation of drawings]

Figure 1 is a sectional view showing the process of attaching the skin to the outer periphery of the lower mold, Figure 2 is a sectional view showing the next step of heating the skin, Figure 3 is a sectional view showing the process of compression molding the skin, Figure 4 is a sectional view showing the process of placing the fusing cloth, Figure 5 is a cross-sectional view showing the process of compressing the upper mold and heating and forming, and Figure 6 is the process of heating the fusing cloth between the skin and the mold. 7 to 9 show the structure of the seat body of the present invention, and FIG. 7 is a sectional view of the seat body taken out and inverted after the process of FIG. 6 is completed. Figure 8 is a sectional view of the seat body with the slab partially placed on top of the mold;
The figure is a sectional view of a seat body composed of a molded slab and a urethane mold. DESCRIPTION OF SYMBOLS 1...Skin, 2...Fusion fabric, 3...Cushion body, 4...Slab, 5...Forming slab or urethane mold, 6...Lower mold, 6A...Protrusion, 7...
Heater, 8, 8A...Upper mold, 9...Heater, 10
...Press mold, 11...Positioning pin.

Claims (1)

[Scope of Claims] 1. A cushion body made of a skinless urethane mold or a cut-molded urethane slab, an outer skin molded in the same shape as the surface of the cushion body, and a back surface of the skin molded and held in the same shape as the skin. The seat body is made of a fused fabric, and the cushion body and the skin are tightly adhered by heating and melting the fused fabric. 2. The seat body according to claim 1, wherein the fusion fabric is formed into a fibrous shape.