JPH0310040Y2 - - Google Patents

Description

[Detailed explanation of the idea]

The present invention relates to an automobile floor trim material. The main purpose of the floor trim of automobiles, especially passenger cars, is to perform various functions such as vibration isolation, heat absorption, noise absorption, etc., as well as to provide beauty and a pleasant feeling to the touch. Examples of the construction of conventional floor trim materials are shown in FIGS. 1 to 3. In the example shown in FIG. 1, it is made of a material in which three layers are integrally formed, sequentially from the bottom: a film layer 1, a mass back layer 2, and a pile layer 3. Here, the mass backing layer 2 is lined with polyethylene or ethylene vinyl acetate, etc., which have an areal density (2 kg/m ² ) 5 to 6 times that of ordinary materials, for example, in order to improve the acoustic properties. Since this material is expensive, floor trim materials using this material have a problem in that they are expensive. The example shown in Fig. 2 is a floor pad made by stacking and integrating a vinyl chloride layer 5 (for example, 1 kg/m ² ) onto a chip mold layer 4 made of waste sheet urethane, and a carpet material made of a polyethylene layer 6 and a pile layer 3. In addition to the difficulty in securing material from waste urethane, this material is also heavy, has poor assembling properties unlike film, and, depending on the specifications, can be used instead of floor pads. Although foil is sometimes used, it is inconvenient that the same carpet mold as when using urethane waste material cannot be used because the degree of deformation during assembly is different, and the vinyl chloride layer 5 and polyethylene layer 6 Since it is not possible to weld them together, each piece is separate, which poses problems such as an increase in the number of man-hours required for die cutting. In the example shown in Fig. 3, from the bottom, the five layers are filtrate layer 1, asphalt layer 7, filtrate layer 1', polyethylene layer 6, and pile layer 3.
Consists of a material with integrally formed layers. This example has the disadvantage that the asphalt layer 3, which contributes to mustard sound effects, cannot be made thick due to weight and other considerations, resulting in poor sound performance. SUMMARY OF THE INVENTION The present invention aims to provide an improved automotive floor trim material that overcomes the drawbacks of conventional materials. An embodiment of the present invention will be described below. As shown in FIG. 4, in the present invention, a nonwoven fabric 8 is placed between a polyethylene layer 6 (e.g., 2 kg/m ² ) and a vinyl chloride layer 5, which conventionally could not be welded together and therefore could not be integrally molded. By interposing them, it is possible to integrally mold them, thereby making it possible to integrate the carpet and the sound insulation pad. It should be noted that since it is conventionally possible to integrate the polyethylene layer 6 and the pile layer 3 and to integrate the vinyl chloride layer 5 and the foil layer 1, it is possible to integrate the polyethylene layer 6 and the pile layer 3 and to integrate the vinyl chloride layer 5 and the foil layer 1. As shown in
The sheet-like material, in which each of the five layers is integrally formed, can be mass-produced by roll processing, and it is easy to cut into shapes, which can significantly reduce costs, as well as provide the flexibility and acoustic properties required for floor trim materials, as well as floor panels. mold cost, material supply, weight,
Good results can also be obtained in evaluation items such as ease of assembly. A comparison with the conventional technology is summarized in (Table 1).

[Table] In the above (Table 1), *1 is because the mass back layer 2 is thick and expensive. *2 is because the moldability of the chip mold layer 4 is difficult. *3 and *4 are because the chip mold layer 4 uses waste materials. *5 is because the chip mold layer 4 is heavy. *6 is because the asphalt layer 7 is thin as described above. As can be seen from the above comparison table, the configuration of the present invention has no drawbacks in all evaluation items, can overcome the drawbacks of the prior art, and can be said to be excellent in overall evaluation.

[Brief explanation of drawings]

1 to 3 are cross-sectional views of a floor trim material according to the prior art, and FIG. 4 is a cross-sectional view of a floor trim material according to the present invention. 1... Felt layer, 3... Pile layer, 5... Vinyl chloride layer, 6... Polyethylene layer, 8... Nonwoven fabric layer.

Claims (1)

[Scope of utility model registration request] A floor trim material for automobiles, in which a nonwoven fabric is interposed between a polyethylene layer and a vinyl chloride layer, a pile layer is formed on top of the polyethylene layer, and a foil layer is formed below the vinyl chloride layer. An automobile floor trim material characterized by being constructed by integrally laminating layers.