JPS6161975B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a combination structure for laminating a seat of a vehicle or the like.

Conventionally, as shown in FIG. 4, in the seat 101 of a vehicle, a skin 103 made of a synthetic fiber sheet is bonded 104 to the upper surface of a urethane 102 serving as a cushion material by frame lamination, and a surface adhesive 104 is attached to the lower surface of the urethane 102. The back base fabric 105 was surface-bonded 106 by frame lamination processing. However, in this case, although fine wrinkles do not occur in the epidermis 103, there is a drawback that creases 107 occur in the epidermis 103 when an external force P is applied, as shown in FIG. Also, this fine wrinkle, crease 107
In order to prevent this, as shown in FIG. 6, the urethane 102 is divided into layers 102A and 102B, a skin 103 is surface-bonded 104 on the upper surface of the upper urethane 102A by frame lamination, and a back base fabric 105 is attached to the lower surface of the skin 103. Surface adhesion 104 is done by frame lamination processing, and lower urethane 102B
The back base fabric 105 is attached to the bottom surface with adhesive 1
08, the composite sheet 101 was constructed with the upper urethane 102A and the lower urethane 102B in a free state 109. In this case, fine wrinkles and creases could be prevented, but the dividing surface was free 109. The epidermis or epidermis 103
The upper urethane 102A that was surface-adhered to the surface had the disadvantage that it bulged and wrinkled and sagged after sitting down.

The purpose of the present invention is to prevent the above-mentioned fine wrinkles and creases, as well as raised wrinkles and sag. A sheet laminate is formed by attaching a surface skin to the upper surface of the upper urethane layer of the plurality of layers by frame lamination, and bonding the mutual urethane surfaces of the plurality of layers at points or lines at predetermined intervals with adhesive. It lies in the combination structure of processing.

Next, one embodiment of the present invention will be explained with reference to the drawings. In the drawing, 1 is a sheet, and this sheet 1
consists of an outer skin 2, a urethane 3 serving as a cushion material, and a back base fabric 4, the outer skin 2 is made of a synthetic fiber sheet material, and the urethane 3 has a plurality of layers (in this example, two layers are used) 3A, 3B. The upper urethane 3A is formed into a slightly thinner layer than the lower urethane 3B.
is made of low melting point urethane since it is frame laminated with the skin 2, and the lower urethane 3B is made of ordinary urethane. The upper urethane 3A and the skin 2 are integrally formed by surface bonding 5 the entire surface of the joint surface by frame lamination. In addition, upper urethane 3
The bonding surfaces of A and the lower urethane 3B are dot-bonded 6 with an adhesive at predetermined intervals in the form of approximately grid intersections, as shown in FIG. 3A, for example. In addition, the lower urethane 3B and the back base fabric 4 are the upper and lower urethane 3A, 3.
The sheet 1 is laminated by dot bonding 6 in a substantially grid intersection pattern similar to B.

Next, the operation of this embodiment configured as described above will be explained.

Now, in this example sheet 1, the urethane 3 serving as the cushion material is molded separately into a plurality of layers 3A and 3B, and the skin 2 is surface-bonded 5 on the upper surface of the upper urethane 3A of the plurality of layers by frame lamination processing. Upper urethane 3A and lower urethane 3
The mutual bonding surface with B is dot-bonded with an adhesive at predetermined intervals in a substantially grid intersection pattern. Therefore, since the area other than the point bond 6 between the upper urethane 3A and the lower urethane 3B is a free surface 7, when a person sits on this seat 1 and an external force P acts on it, the conventional seat 101, the urethane 102 is integrally shaped as shown in FIG.
There is a crease 1 due to the large difference in distance between the two sides.
The occurrence of urethane 07 is noticeable, but in this example, urethane 3
Since the upper urethane 3A and lower urethane 3B are divided into layers and bonded at points 6, the action of external force P on the upper and lower urethanes 3A and 3B is deformed, and the upper urethane 3A is deformed into a curved shape by the external force P. However, most of them compress the upper urethane 3A in the thickness direction, and even if the lower urethane 3B deforms into a curved shape, the free surface 7 prevents the effect on the skin 2. This makes it possible to prevent the occurrence of fine wrinkles and creases 107, and when the external force P is removed, the upper urethane 3A is elastically restored to its normal state, allowing the surface of the epidermis 2 to return to a smooth state. Further, since the upper urethane 3A and the lower urethane 3B are point-bonded 6, it is possible to prevent wrinkles in the bulge, sag, etc.

In the above embodiment, the urethane 3 is illustrated as being divided into two layers, the upper urethane 3A and the lower urethane 3B, but the present invention is not limited to this, and for example, it may have three or more layers. In addition, urethane 3
The divided structure may be a combination of foreign urethane to improve the physical properties of urethane as a cushion material. In addition, although the mutual adhesion of the layers of urethane has been illustrated as point adhesion 6 in the form of approximately grid intersections, the present invention is not limited to this, and it is also possible to use point adhesion 6a in a staggered manner as shown in FIG. You may also dot gluing in a hexagonal pattern as shown in c. Further, the mutual adhesion of the layers of urethane is not limited to point adhesion 6, 6a, but may also be short line adhesion 6b as shown in FIG. 3D, or as shown in FIG.
As shown in F, a combination of point adhesive 6 and short line adhesive 6b may be used. Further, since the adhesive is bonded in layers, the bonding positions of the upper side and the lower side may be aligned or phased and bonded.

Now, in the present invention, the urethane material that is the cushioning material of the sheet is molded separately into a plurality of layers, and the upper surface of the urethane layer in the upper layer of the plurality of layers is surface-bonded by frame lamination, and each of the plurality of layers is mutually bonded. By bonding the urethane surface with adhesive at points or lines at predetermined intervals, the state of elastic deformation of each layer of urethane due to external force can be changed to a different state, and the influence on the epidermis can be isolated.
It is extremely useful because it can prevent not only fine wrinkles and creases, but also wrinkles and wrinkles, and keep the epidermis in a smooth state.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, Fig. 1 is a sectional view of the sheet, Fig. 2 is an explanatory diagram of the action, Fig. 3 is A, B,
C, D, H, F are diagrams of adhesion of layered urethane,
4 to 6 are cross-sectional views of conventional sheets. 1... sheet, 2... epidermis, 3... urethane,
3A, 3B...layered urethane, 5...surface adhesive,
6, 6a... point adhesion, 6b... line adhesion.

Claims (1)

[Claims] 1. The urethane material that will become the cushion material of the sheet is divided and molded into multiple layers, and a skin is surface-bonded to the upper surface of the urethane layer of the multiple layers by frame lamination, and the urethane surfaces of each of the multiple layers are is a combination structure of laminated sheets, characterized by dots or lines bonded at predetermined intervals using an adhesive.