JPH0457495B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to an interior material such as an armrest of an automobile and a method for manufacturing the same.

<Prior Art> Conventionally, this type of interior material has a skin 21 made of vinyl chloride resin provided on the outermost side, as shown in FIG.
A semi-rigid foamed urethane layer 23 was provided between the innermost hard aggregate 22 and the innermost hard aggregate 22.

In the interior material a having such a structure, the skin 21 made of vinyl chloride resin itself has flexibility, but when it is bonded to the urethane layer 23 as described above, the feel of the skin 21 during use is It became hard, and the desired soft feeling could not be obtained.

<Technical Problem of the Invention> The first technical problem to be solved by the present invention is to prevent the inner layer of the epidermis from deteriorating the soft feeling of the epidermis, and to further increase the soft feeling. The second technical problem is to solve the first technical problem while realizing it in a reliable and simpler way.

<Means for solving the technical problem> The technical means taken by the first invention to solve the above problem is to combine a semi-hard filler layer provided on the outer surface of the hard aggregate and the skin body. The second invention is characterized in that a soft foam layer made of an appropriate material is provided in between, and the technical means taken by the second invention is to coat the inner surface of the interior material mold with the skin body material liquid and then solidify it to form the skin. A main body is formed, and then the inner surface of the skin main body is coated with a soft foam raw material liquid and then solidified to form the above soft foam layer, and then the above aggregate placed inside the soft foam layer. ,
It is characterized in that the gap between the soft foam layer and the filler layer is filled with a filler layer raw material liquid and solidified to form the filler layer.

<Example> An example of the present invention will be described below based on the drawings.

A shown in FIG. 1 is an armrest of an automobile constructed according to the first invention, that is, an interior material;
As shown in the enlarged sectional view of the figure, it is composed of a skin main body 3 located at the outermost position, a soft foam layer 4, a filler layer 2, and an aggregate 1 at the innermost position. This interior material A is characterized in that a soft foam layer 4 is provided between the skin body 3 and the filler layer 2.

The skin body 3 is formed into a thin sheet of a suitably soft synthetic resin such as polyvinyl chloride, polypropylene, or soft polyurethane, and a soft foam layer 4 is integrally provided on the inner surface of the skin body 3. Incidentally, the surface of the skin main body 3 may be provided with an uneven pattern 5 such as wrinkles as shown in the figure.

The soft foam layer 4 is formed into a foam sheet by foaming a suitable synthetic resin material such as polyvinyl chloride through suitable chemical foaming, mechanical foaming, etc., and has excellent buffering properties. be. The thickness of the soft foam layer 4 is not particularly limited, but it is more preferable that it be slightly thicker than the skin body 3 as shown. Further, the expansion ratio of the soft foam layer 4 is appropriately set in consideration of the conditions of the skin body 3 and the filler layer 2. A filler layer 2 is integrally provided on the inner surface of the soft foam layer 4.

The filler layer 2 is a semi-rigid material made of a suitable synthetic resin such as polyurethane foam or polystyrene, or cork. The structure of the filler layer 2 may be foam-like or dense as described above. Filler layer 2
An aggregate 1 made of a hard synthetic resin such as nylon is integrally provided on the inner surface side of the interior material A, that is, on the innermost side of the interior material A.

By using polyvinyl chloride for the soft foam layer 4 and using polyurethane for the filler layer 2, the bonding between both 4 and 2 becomes better.

Adjacent layers can be bonded to each other as appropriate, such as by heat, by a solvent, or by appropriate adhesion by adding a certain type of additive.

The second invention is a method for manufacturing the interior material A as described above, in which the skin body raw material liquid is coated on the inner surface of the interior material mold B, and then solidified to form the skin body 3.
Next, the inner surface of the skin main body 3 is coated with a soft foam raw material liquid and then solidified to form the soft foam layer 4.
The above-mentioned aggregate 1 installed inside the soft foam layer 4
This method is characterized in that a filler raw material liquid is filled into the gap between the two and solidified to form the filler layer 2 (see FIGS. 1 to 3).

The above-mentioned skin body raw material liquid is a paste sol mainly composed of a suitable synthetic resin such as polyvinyl chloride or polypropylene, and an example of its composition is: Polyvinyl chloride resin 100 parts by weight Plasticizer 65 parts by weight Stabilizer 11 parts by weight Pigment 4 parts by weight, and is solidified by coating and applying heat at an appropriate temperature.

The above-mentioned flexible foam raw material liquid is a paste sol made by adding a foaming agent with an appropriate decomposition temperature to a material mainly composed of synthetic resin such as polyvinyl chloride, or by mechanically foaming the material, and an example of its formulation is: Polychloride Vinyl resin: 100 parts by weight Plasticizer: 80 parts by weight Stabilizer: 7 parts by weight Foaming agent: 3 parts by weight, and is solidified into a foam by coating and applying heat at an appropriate temperature.

The above filler raw material liquid is a liquid mainly composed of synthetic resins such as polyurethane and polystyrene. Examples of the amounts used in the case of polyurethane are: Isocyanate liquid 100 volumes Polyol liquid 183 volumes, and both liquids are mixed and filled. This solidifies at room temperature. At this time, if water or Freon is added as a foaming agent to the above liquid, it will solidify into a foam.

An example of a method and conditions for manufacturing interior material A using each of the raw material liquids as described above will be described.

First, the inner surface of the interior material mold B is coated with the skin body raw material liquid, and then the dripping is prevented.
Apply a temperature of 200℃ to solidify. As a result, the skin body 3 is formed on the inner surface of the mold B.

Next, the inner surface of the skin body 3 is coated with the soft foam raw material liquid, and then heated to 200° C. to solidify it. As a result, a foam-like soft foam layer 4 is integrally formed on the inner surface of the skin body 3.

Thereafter, the gap between the aggregate 1 placed inside the soft foam layer 4 and the soft foam layer 4 is filled with a filler material liquid for polyurethane to which a foaming agent has been added, and solidified at room temperature. As a result, a foam-like filler layer 2 is integrally formed between the aggregate 1 and the soft foam layer 4.

In this way, the interior material A is formed in the mold B, as shown in FIG. This interior material A is molded into mold B
By further releasing the mold, the interior material A shown in FIGS. 1 and 2 is obtained.

<Effects of the Invention> As described above, the first invention provides a soft foam layer made of an appropriate material between the semi-hard filler layer provided on the outer surface of the hard aggregate and the skin body. Because of this structure, the inner layer of the skin can be appropriately softened by the buffering effect of the soft foam layer, and the soft feeling of the skin can be fully exhibited, and the soft feeling of the surface of the interior material can be further enhanced. It is something that can be done.

As described above, the second invention comprises coating the inner surface of an interior material mold with a skin body raw material liquid, solidifying it to form the skin body, and then coating the inner surface of the skin body with a soft foam raw material liquid. The above-mentioned soft foam layer is formed by post-solidification, and then the gap between the above-mentioned aggregate installed inside the soft foam layer and the soft foam layer is filled with filler raw material liquid, and the above-mentioned material is solidified. Since a filler layer is formed, an interior material with excellent softness on the surface can be produced in a reliable and simpler manner.

Thus, the intended purpose can be achieved.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, in which Fig. 1 is a partially cutaway perspective view of the interior material, Fig. 2 is an enlarged sectional view showing the main part of the interior material, and Fig. 3 is the interior material formed by the interior material molding die. FIG. 4 is an enlarged sectional view showing the main parts of a conventional interior material. In the figure, A: interior material, B: interior material mold, 1: aggregate layer, 2: filler layer, 3: skin body, 4: soft foam layer.

Claims (1)

[Claims] 1. An interior material comprising a semi-hard filler layer provided on the outer surface of a hard aggregate and a soft foam layer made of an appropriate material between the skin body. 2 Coating and solidifying the skin body raw material liquid on the inner surface of the interior material mold to form the skin body, and then coating the inner surface of the skin body with the soft foam raw material liquid and solidifying it to form the soft foam. A layer is formed, and then a filler raw material liquid is filled into the gap between the aggregate placed inside the soft foam layer and the soft foam layer, and solidified to form the filler layer. A manufacturing method for interior materials.