JPS6045546B2 - Manufacturing method of seat cover material - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in a method for manufacturing a seat cover material having an elastic body and a skin and backing material disposed on the front and back sides of the elastic body.

Traditionally, seat cover materials for automobiles, etc. have been formed by attaching an elastic body such as urethane formed to an appropriate thickness to the lower surface of a skin made of leather, synthetic resin, etc., and multiple pieces of this seat cover material are bonded together. Seat covers for automobiles, etc. are manufactured using this technology.

In addition, when manufacturing a seat cover by joining multiple pieces of this seat cover material by sewing, a backing material called a so-called gold band made of non-woven fabric is attached to the back side of the elastic body to prevent threads from coming off during sewing. This prevents the elastic body from being cut by the thread. However, when forming a seat cover using a multilayer seat cover material consisting of the skin and an elastic body, or a skin, an elastic body, and a backing material, the skin, elastic body, and The backing materials cannot be accurately joined while maintaining a predetermined positional relationship with each other, resulting in mutual misalignment.

For this purpose, before forming a seat cover using the seat cover material, the outer skin, elastic body, and backing material that make up the seat cover material must be temporarily bonded or temporarily sewn together. When bonding the body and backing material with adhesive, the adhesive is applied to the entire contact surface of the three-layer state to maintain this three-layer state, resulting in a poor surface feel. In addition, when the three-layered state is maintained by basting, there are the following disadvantages, such as the three-layered state being mutually misaligned as in the case where the seat cover is formed by sewing, resulting in poor work efficiency and poor adhesion. When an adhesive is used, a large amount of adhesive is required, and the work of applying the adhesive is difficult, making it extremely uneconomical. The object of the present invention is to manufacture a seat cover that can accurately maintain the three-layered state of the skin, elastic body, and backing material by temporarily bonding the skin, elastic body, and backing material with a small amount of adhesive, and has a good surface feel. To provide an economical manufacturing method for a material for a seat cover, which can be carried out accurately and quickly.

The present invention will be explained in detail below with reference to the drawings.

Figures 1A and B and Figure 2 show one example of a seat cover material manufactured by the method for manufacturing a seat cover material according to the present invention.
An outline of an example is shown, and this seat cover material 1
is a skin 2 made of a synthetic resin film, leather, or other material; an elastic body 3 made of urethane or the like having a predetermined thickness disposed on the back side of the skin; and an elastic body 3 attached to the back side of the elastic body 3. A backing material 4 made of a non-woven fabric etc., which is applied to the contact surface of the skin 2 and the elastic body 3, and the contact surface of the elastic body 3 and the backing material 4, in dots at appropriate intervals. With adhesive 5, the skin 2, elastic body 3 and backing material 4 are bonded together.
A three-layer seat cover material 1 is formed.

When forming a seat cover S from the seat cover material 1, a main portion 1a and a pair of side portions 1b attached to both sides of the main portion 1a are formed using the seat cover material 1.
A belt-shaped part 1c is formed by punching or other method and has a width corresponding to the thickness of the seat.The belt-shaped part 1c is similarly formed from the seat cover material 1 or another material, and the main part 1a, a pair of The seat cover S is formed by arranging the side portions 1b and the band-like portions 1c as shown in FIG. 2, and joining their opposing edges by sewing or other joining means.

It should be noted that a plurality of filaments 1d are shown in the vertical direction on the main portion 1a, and these represent a pattern of 9 irregularities formed on the seat cover S by sewing or using a high-frequency sewing machine or the like. Furthermore, in this embodiment, one sheet of seat cover material 1 formed in a three-layer state is formed, and from this one sheet of seat cover material 1, the main part 1a1 side part 1b, etc. are punched out or by other methods. Although the case where the seat cover S is formed is explained above, it is also possible to form the three-layer state of the main part 1a and the side part 1b separately and form the seat cover S by sewing or other joining means. . Next, the method for manufacturing the seat cover material 1 according to the present invention will be explained with reference to FIGS. 3A, B, and C. First, as shown in FIG. 3A, a base or an intermittently driven conveyor, etc. A skin 2 is placed on a workbench 10 with its back side facing up, and an elastic body 3 and a backing material 4 are sequentially placed on the back side of this skin 2.

A syringe 12 containing adhesive 5 is attached above the edge of the backing material 4 of the workbench 10, and an injection needle 14 is attached to the lower end of this syringe 12. The syringe 12 is held by an up-and-down mechanism (not shown), and the tip of the injection needle 14 is at a first position 15 on the contact surface between the epidermis 2 and the elastic body 3, and at a first position 15 on the contact surface between the epidermis 2 and the elastic body 3. The second position 16 of the contact surface with the material 4 is vertically movable at predetermined time intervals. Further, when the tip of the injection needle 14 is located at the first and second positions 15 and 16, the adhesive 5 stored in the syringe 12 is poured out. The tip of the injection needle 14 is at the first position 1
5, the adhesive 5 is poured out from the tip of the injection needle 14, and the epidermis 2 and the elastic body 3 are dot-bonded as shown in FIG. 3B. When the tip rises to the second position 16, the adhesive 5 is similarly poured out from the tip of the injection needle 14, and the elastic body 3 and the backing material 4 are brought together as shown in FIG. 3C. When the injection needle 14 is pulled out above the backing material 4, the skin 2, the elastic body 3, and the backing material 4 are bonded to each other at points, thereby maintaining a three-layer structure.

This point bonding is performed at appropriate intervals or randomly at multiple locations. It is also possible to apply the adhesive 5 in dots only along the edges of the main part 1a and side parts 1b forming the seat cover S, and in this case, apply the adhesive 5 as appropriate along the shape of the edges. If a plurality of injection needles 14 are provided in advance at intervals of The adhesive 5 is not limited to being applied sequentially in the vertical direction to the second positions 15 and 16, but injection needles 14 of different lengths extending to the first and second positions are appropriately placed in the syringe 12. With this arrangement, the adhesive 5 can be applied to the first and second positions by lowering the syringe 12 once. In addition, the adhesive 5 is applied sequentially in the vertical direction.
When applying, the first position 15 and the second position 16 can be reversed, and the insertion direction of the injection needle 14 is not limited to the direction from the backing material 4 side, but also depends on the material of the skin material 2. Depending on the situation, the injection needle 14 may be used to inject from the skin material 2 side. The above is one embodiment of the method for manufacturing the seat cover material according to the present invention. According to this method, the skin, the elastic body, and the backing material can be bonded with a small amount of adhesive, and As a result, a material for a seat cover with good surface texture was obtained, and a seat cover could be manufactured very easily using this material for a seat cover, and the three-layer state was accurately maintained during the manufacture of the seat cover. There is no risk of misalignment between the three layers, and due to the presence of the backing material, there is no risk of cutting the elastic material or pulling out the sewing thread when sewing the edges of the three layers. , can improve work efficiency.

Furthermore, since the adhesive is applied using a needle-shaped injection needle, the amount of adhesive used can be significantly reduced, and once the three-layer condition is adjusted and arranged, the application process is extremely easy. There is no need to turn the skin and backing material over and apply adhesive to the front surface, so there is no need to repeatedly adjust the three-layer state.We have created a material for seat covers that is economical and has excellent workability. You can get it. In this example, the seat cover material is divided into a main part, a side part, and a band-like part. By joining these seat cover materials using a joining method such as sewing or high-frequency adhesive, one Although the case where two seat covers are formed is shown, the main part and the side parts may be formed integrally, or the main part and the side parts are further divided into a large number of parts. Also good.

It will be obvious that various other modifications and changes may be made without departing from the spirit of the invention.

[Brief explanation of the drawing]

1A and 1B are a perspective view and a sectional view schematically showing one embodiment of a seat cover material manufactured by the method of manufacturing a seat cover material according to the present invention, and FIG. FIGS. 3A, 3B and 3C are perspective views showing one embodiment of forming and manufacturing a seat cover, and are schematic cross-sectional views sequentially showing a method for manufacturing a seat cover material according to the present invention.

Claims (1)

[Scope of Claims] 1. A skin, an elastic body, and a backing material are sequentially stacked to form a three-layered state, and while the three-layered state is maintained, an adhesive is stored in the contact surfaces of the three-layered state at a plurality of locations. Insert the tip of the injection needle attached to the syringe, inject adhesive into each contact surface of the three-layer state in dots from the injection needle, and adhere each contact surface of the three-layer state to each other. A method of manufacturing a material for a seat cover, which is characterized by: 2. Place the tip of the injection needle on the first contact surface between the epidermis and the elastic body.
The method for producing a seat cover material according to claim 1, characterized in that the seat cover material is moved up and down at predetermined time intervals between the first position and the second position of the contact surface between the elastic body and the backing material. . 3 The injection needles include a plurality of injection needles whose tips are inserted into a first position on the abutting surface between the epidermis and the elastic body, and a tip at a second position on the abutting surface between the elastic body and the backing material. 2. The method of manufacturing a seat cover material according to claim 1, wherein the adhesive is injected at once using a plurality of inserted injection needles.