JPH0614982Y2 - Foam sheet with integrated skin - Google Patents

Description

[Detailed Description of the Invention] (Industrial field of application) The present invention relates to a surface feeling used as an automobile seat,
The present invention relates to a foam sheet with integral skin, which has a good cushioning property and a comfortable sitting feeling.

(Prior Art) A piece of skin in which an open-celled backing layer is laminated on the back side of a breathable skin material is cut and sewn into a bag-shaped seat cover, and a polyurethane foaming undiluted solution is injected into the inside of the skin to integrally foam the skin. The integrated foam sheet is, for example, Japanese Patent Publication No. 55-21590.
It is conventionally known as disclosed in Japanese Patent Publication No. In such a skin-integrated foam sheet, an impregnated hardened layer is formed by impregnating a part of the polyurethane foaming undiluted solution inside the open-cell layer, but if the impregnated hardened layer is formed also in the stitched part of the skin material, it is comfortable to sit on. However, in order to avoid this, it is necessary to consider the design such as arranging the sutured portion at a position where the occupant does not feel uncomfortable, and it is often restricted in the design.

(Problems to be Solved by the Invention) The present invention solves the above-mentioned conventional drawbacks, prevents a sense of discomfort from occurring at the sutured portion of the epidermis piece, and eliminates the design and restrictions on the design, and has a good sitting comfort. It was completed for the purpose of making a foam sheet with integrated skin.

(Means for Solving the Problems) The present invention is a foam sheet integrated with a skin, which comprises a skin piece having a breathable skin material and a backing layer laminated thereon, a cut and sewn seat cover, and a polyurethane foam integrally foamed therein. It is characterized in that a liquid impermeable coating is formed on the backing layer of the sutured portion, and an impregnated and cured layer cured by impregnation of the polyurethane foaming stock solution is formed on the other backing layers. is there.

(Embodiment) Next, the present invention will be described in more detail with reference to the illustrated embodiment.

In FIG. 1, (1) is a seat cover, and (2) is a polyurethane foam obtained by integrally foaming a polyurethane foaming stock solution inside the seat cover. The seat cover (1) of the embodiment is a top plate.
(1a), the top plate side (1b), the gusset portion (1c) are divided into cut pieces of epidermis, which are sewn into a bag shape. The seat cover (1) is formed by laminating a backing layer (4) made of an open-celled foam on the back surface of a breathable skin material (3) such as woven fabric or knitted fabric. Seat cover as shown
Liquid impermeable coating on the backing layer (4) (4) suture (5)
(6) is formed. The liquid impermeable coating (6) is 30
The backing layer (4) of the suture part (5) is applied by applying a film of polyethylene, polyurethane, polypropylene, etc., with a thickness of ~ 100μ, or by spray coating a solution adhesive of polyurethane, polyester, vinyl acetate, or acrylic. The one coated on the back side of) can be used. In addition, such liquid impermeable coating (6) is not formed on the backing layer (4) in other portions.

Such a seat cover (1) is set in the foam lower mold and the shape is held by the intermediate mold. After the polyurethane foam stock solution is injected into the seat cover (1), the foam upper mold is closed to perform integral foaming. The foaming undiluted solution impregnates the backing layer (3) of the seat cover (1) into a portion of the backing layer (3) where the liquid impermeable coating (6) is not formed, and forms a hardened impregnated cured layer (7) to give an appropriate hardness. However, since the liquid impermeable coating (6) is formed on the stitched portion (5), impregnation does not occur. Therefore, the cushioning property of the sewn portion (5) is good, and the riding comfort performance of the occupant can be improved in combination with the action of the impregnated and hardened layer (7) in the other portions.

(Effects of the Invention) As described above, the present invention improves cushioning performance by preventing the foaming stock solution from being impregnated in the backing layer of the suture part, and impregnating the polyurethane foam stock solution in the seat cover of other parts. Thus, the shape-retaining property, sitting comfort, and the like can be improved by forming an impregnated cured layer that is cured by. Further, according to the present invention, since the impregnated and cured layer cured by impregnation of the polyurethane foaming undiluted solution is not formed in the stitched portion, the layout of the stitched portion can be freely determined, and the degree of freedom in design and design can be increased. it can. As described above, the present invention prevents the occurrence of discomfort at the sutured portion of the epidermis piece.

Therefore, the present invention has an extremely large practical value as a skin-integrated foam sheet that eliminates the conventional problems.

[Brief description of drawings]

FIG. 1 is a partially cutaway perspective view showing an embodiment of the present invention, and FIG. 2 is a partially enlarged sectional view thereof. (1): seat cover, (3): breathable skin material, (4): backing layer, (5): stitched portion, (6): liquid impermeable coating, (7): by impregnation of polyurethane foaming stock solution Cured impregnated cured layer.

Continuation of front page (51) Int.Cl. ⁵ Identification code Office reference number FI Technical display area B29K 105: 20 B29L 31:58 4F

Claims (1)

[Scope of utility model registration request] 1. A seat cover (1) obtained by cutting and sewing a skin piece having a breathable skin material (3) and a backing layer (4) laminated, and a polyurethane foam (2) integrally foamed inside the seat cover. A foam sheet integrated with an epidermis, wherein a liquid impermeable coating (6) is formed on the backing layer (4) of the sutured portion (5), and the other backing layers (4) are impregnated with a polyurethane foaming undiluted solution. A skin-integrated foam sheet having a cured impregnated cured layer (7) formed thereon.