JPH0133328Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of the Invention) The present invention relates to an air-impermeable laminate sheet having a base material laminated with a raised fabric on one side and, if necessary, a backing material on the other side.

(Description of Prior Art) A laminate sheet 4 is made by laminating a base material 1 made of soft polyurethane foam, a fabric 2 having a raised surface and a backing material 3 by fusing, gluing or sewing, as shown in FIG. Although it is used in various fields, especially in fields where non-breathability is required, a backing material 3 that uses a non-breathable film on the front or back surface is used. However, the above-mentioned laminate sheet 4, which uses a film as the backing material 3,
When it is wound onto a take-up roll 5 as shown in Fig. 2 for packaging or transportation, the back material 3 has creases 3a.
At the same time, the fabric 2 in contact with the backing material 3 has a raised irregularity 2a caused by the creases 3a, and this irregular raised raised 2a often remains even after the laminate sheet is rewound. This not only impairs the appearance of the laminate sheet, but also reduces its product value.

(Purpose of the invention) The purpose of the invention is to provide a non-breathable laminate sheet that does not cause the raised surface to be disturbed and the appearance to be maintained when it is wound onto a take-up roll for packaging, transportation, etc. .

(Structure of the invention) The present invention is a non-breathable laminate sheet in which a fabric with a raised surface is laminated on one side of the base material and a backing material is laminated on the other side as required. The key point lies in the fact that it has a three-layer structure in which soft polyurethane foam is laminated on top. A detailed explanation will be given below using the accompanying drawings.

FIG. 3 shows a cross section of the laminate sheet 6 of the first embodiment of the present invention. This laminate sheet 6 includes a fabric 7 having a raised surface and a film 8.
Soft polyurethane foam 8b and 8 on both sides of a
c is laminated on one side of a base material 8 having a three-layer structure formed by laminating.

FIG. 4 shows a cross section of the laminate sheet 9 of the second embodiment. This laminate sheet 9 is obtained by laminating a fabric 7 having a raised surface on one side of the base material 8, and a backing material 10 on the other side. The presence or absence of this backing material 10 is determined depending on the intended use of the product.

Next, the components of the invented product will be described.

As the fabric 7 having a raised surface,
Knitted and woven products such as polyester or nylon are mainly used, and the film 8 constitutes the base material.
As a, a film made of polyurethane, polyamide, etc. and having a thickness of several microns to several tens of microns is used. or,
As the soft polyurethane foam, either polyether type or polyester type can be used, and its thickness is appropriately determined depending on the use of the laminate sheet, but is generally from several millimeters to several tens of millimeters. Note that various knitted fabrics, woven fabrics, or nonwoven fabrics can be used as the backing material, and in this example, nylon tricot was used.

The product of the present invention is formed by laminating the above-mentioned constituent members as shown in Fig. 3 or 4.
This can be done by gluing or suturing or a combination thereof.

(Effects) The product of this invention has a three-layer base material made of a film laminated with soft polyurethane foam on both sides, and a fabric with a raised surface is laminated on one side of the base material.
A backing material is laminated on the other side of the base material as necessary, and when the product of the present invention is wound up on a take-up roll used for packaging and transportation, the part facing the take-up roll shows creases. This did not occur, and the nap on the surface was not disturbed. This is thought to be due to the fact that by laminating the soft polyurethane foam on both sides of the film, the portion facing the take-up roll was able to expand and contract.

In this way, even when the product of this invention is wound up on a take-up roll during packaging, transportation, etc., the raised surface does not become disordered, so the appearance is not impaired and the product value is not reduced. Nor.

[Brief explanation of the drawing]

Figure 1 is a cross-sectional view of a conventional laminate sheet, Figure 2 is a partial perspective view of the conventional product when it is rolled up, and Figure 3 is a cross-sectional view of a conventional laminate sheet.
FIG. 4 is a sectional view of each embodiment of the present invention. 6, 9... Laminated sheet according to the present invention, 7
...Fabric having raised surface, 8... Base material, 8a... Film, 8b, 8c... Soft polyurethane foam, 10... Back material.

Claims (1)

[Scope of utility model registration request] A laminate sheet in which a fabric with a raised surface is laminated on one side of a base material, and a backing material is laminated as necessary on the other side of the base material, and the base material has a flexible polyurethane foam on both sides of the film. A laminate sheet characterized by having a three-layered structure.