JPS623215Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a laminate having a surface material comprising cloth and PVC leather, and particularly to a laminate in which cloth and PVC leather are joined at their respective edges.

Laminated materials in which a foam material is interposed as a cushioning material between the surface material and the core material include planar, three-dimensional, and even those with complex embossed patterns. These are widely used in furniture and vehicle interior materials.

Various materials are used for the surface material, foam, and core material that make up such laminated materials, but currently, due to reasons such as physical properties, molding, appearance, and economical reasons, only a few materials are used as surface materials. Cloths and PVC leather are
Polyurethane foam is most commonly used as the foam. Some of these include both cloth and PVC leather as surface materials. This is because cloth has a superior feel and appearance compared to PVC leather, but has the drawbacks of being inferior in durability and being easily stained. As a laminated material, on the one hand, the appearance characteristics of cloth are utilized, and on the other hand, the characteristics of PVC leather are utilized, especially in areas that are likely to come into contact with other objects.

By the way, when cloth and PVC leather are included as surface materials, each is attached to a polyurethane foam that is generally used as a foam, but there is some kind of material that engages the cloth and PVC leather. measures must be taken.

Conventionally, on the one hand, fabrics were attached to polyurethane foam using urethane adhesive by heat compression treatment in a mold, and on the other hand, PVC leather was attached to polyurethane foam impregnated with PVC using high frequency treatment, and the fabric and PVC leather were sewn together. Alternatively, there is a laminated material that is mechanically engaged with mounting fittings or the like and is integrally formed with a core material.

However, such conventional laminated materials require a large number of man-hours to form and are extremely troublesome, and have the drawback that the cloth and the PVC leather tend to break easily at the engagement portions as described above.

The present invention provides an improved laminate material that eliminates the drawbacks of conventional laminate materials. By utilizing these materials and attaching these surface materials to the polyurethane foam, they are chemically engaged by bonding such as adhesion or welding, thereby providing a laminated material that can be efficiently molded and has sufficient strength. be.

Hereinafter, the configuration of the present invention will be explained in detail based on the drawings.

To give an example of a surface material that includes cloth and PVC leather, as shown in FIG. There are many things that are. Examples of conventional laminated materials for the engagement portion between cloth and PVC leather include the one shown in FIG. 2, which is a sectional view of the main part of a planar type, and the main part sectional view of a three-dimensional one. There are those shown in Figure 3. In the example shown in FIG. 2, a cloth 11 and a PVC leather 12 are attached to a core material 3 via a PVC-impregnated polyurethane foam 4, and both engaging portions A
In this case, cloth 11 and PVC leather 12 are sewn together. Further, in the example shown in FIG. 3, the polyurethane foam 14 is
through the cloth 21, and the PVC leather 22 through the PVC-impregnated polyurethane foam 24,
The cloth 21 and the PVC leather 22 are attached to each other at the engaging portions B of the two and engaged with the fittings 5.

For example, in the case of the one illustrated in FIG. 3, a polyurethane foam 14 coated with urethane adhesive on both sides is interposed between the cloth 21 and the core material 13, and a desired embossed pattern is formed. In addition to the one molded by heat compression in a mold, a PVC-impregnated polyurethane foam 24 is made of PVC leather 22.
The core material 13 is interposed between the core material 13 and the core material 13, which is molded by high frequency, and is engaged with the mounting bracket 5.

However, the conventional laminated materials constructed in this manner have the above-mentioned drawbacks.

In contrast, the present invention combines cloth and PVC leather.

Regarding one embodiment of the present invention, as shown in FIG. 4, which is a sectional view of a main part illustrating a planar version, cloth 31 and PVC leather 32 are attached to a core material 23 through a polyurethane foam 34. ing. The cloth 31 and the PVC leather 32 are joined at the engaging portion C by adhesive, welding, or the like.
To illustrate the molding method in this case, as shown in FIG. 5, which is a sectional view of the main part showing the state, a polyurethane foam 34 is coated on both sides with a mixture of urethane adhesive and PVC. , core material 2
3, a cloth 31 and a PVC leather 32 are placed on top of each other at their edges, and then a pair of electrode parts 6 and 1 are connected to the main body of a high frequency welder (not shown).
6, and remove the edge of the PVC leather 32 located on the right hand side of the electrode section 6 in the figure.

When molding the laminated material according to the present invention, at least in the engaging portion C, the molding is performed under conditions where urethane adhesive and vinyl chloride coexist. This is because urethane adhesive is effective for attaching the cloth 31 to the polyurethane foam 34, and PVC is effective for attaching the cloth 31 and the PVC leather 32 to the polyurethane foam 34 while bonding them together using high frequency treatment. Therefore, especially when forming a complicated embossed pattern on the side of the cloth 31, heat compression treatment is performed on the side of the cloth 31 using a mold to remove the PVC leather 3 including the engaging portion C.
On the second side, high frequency processing will be performed. In the same sense, when using polyurethane foam impregnated with PVC in place of the polyurethane foam 34, on both sides of the polyurethane foam impregnated with PVC,
It is also possible to use polyurethane foam impregnated with PVC and coated with urethane adhesive on both sides at least on the side that contacts the cloth 31.

FIG. 6 is a sectional view of a main part of another embodiment of the present invention, illustrating a three-dimensional one. Core material 3
3, a cloth 41 is heat-compressed with a mold so that a desired embossed pattern is formed through a polyurethane foam 44 coated with urethane adhesive on both sides, and a core material 33 is The cloth 4 is coated through a polyurethane foam 54 impregnated with PVC.
The PVC leather 42 is placed so as to overlap the edge of the leather 1, and is subjected to high frequency treatment in the same manner as in the case of FIG. In this case, by using a material in which PVC is newly applied to both sides of the edge of the cloth 41 in the engaging portion D,
The bond between the cloth 41 and the PVC leather 42 at the engaging portion D is strengthened.

As explained above, in the present invention, a laminated material having a surface material containing cloth and PVC leather is chemically bonded in a so-called surface state, especially at the engagement part between cloth and PVC leather. This has the effect that it can be molded efficiently and is difficult to break.

[Brief explanation of drawings]

FIG. 1 is a plan view illustrating the arrangement of surface materials;
2 and 3 are cross-sectional views of main parts showing a conventional engaged state, FIG. 4 is a cross-sectional view of an embodiment of the present invention showing its engaged state, and FIG. 5 is a main part showing its molded state. FIG. 6 is a sectional view showing another embodiment of the present invention in an engaged state. 1, 11, 21, 31, 41...cloths, 2, 1
2, 22, 32, 42...PVC leather, 3, 13,
23, 33... Core material, 4, 14, 34, 44... Polyurethane foam, 24, 54... Polyurethane foam impregnated with PVC, 5... Mounting metal fittings, 6, 16
... Electrode part, A, B, C, D... Engagement part.

Claims (1)

[Scope of utility model registration request] It is a laminated material with polyurethane foam interposed between the surface material and the core material, and the surface material is made of cloth and PVC leather, with an appropriate embossed pattern formed thereon, if necessary, and a urethane adhesive. 1. A laminate having a surface material comprising cloth and PVC leather, characterized in that the cloth and PVC leather are joined at their respective edges and attached to a polyurethane foam in the presence of a polyurethane foam.