JPH0438995Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of application of the invention] The present invention is a composite resin suitable for products where decorativeness is important, such as the skin of an automobile instrument panel, or the lining material of an automobile door or pillar. It relates to molded products, especially their surface structures.

[Background of the idea]

A conventional composite resin molded article of this type has a structure as shown in FIG. 3, for example. This is done by forming a foamed polyurethane layer 2 on the top surface of a product base material 1 made of various materials such as synthetic resins and metals, as necessary to provide cushioning properties, and then forming a foamed polyurethane layer 2 on the top surface of the foamed polyurethane layer 2. The skin 3 is integrally formed with a polyvinyl chloride layer formed with skin grains. However, since the skin 3 is a single layer made of non-foamed polyvinyl chloride, there is a problem in that it does not feel very good to the touch despite the skin texture formed on the surface.

Therefore, in order to improve the texture of the skin, as shown in FIG. A polyvinyl chloride skin 4 having a two-layer structure in which a vinyl chloride layer 4b is integrally formed has been proposed.

However, when the foamed polyvinyl chloride layer 4b of the skin 4 is formed into a product shape by vacuum forming or the like, each bubble on the sliced surface 5 is stretched, and the inner surface of the bubble is largely exposed. As a result, the color itself appears whitish, or the reflection of light is disturbed, causing a phenomenon in which parts appear to be "flickering", resulting in a decrease in product value.

[Purpose of invention]

The present invention was developed by focusing on these conventional problems, and improves the appearance of the epidermis by applying a matte coating to the sliced surface of the foamed polyvinyl chloride layer, which is the top layer of the epidermis. The purpose is to provide a composite resin molded product that can increase commercial value.

[Example of idea]

The present invention will be explained in detail below based on the embodiment shown in FIGS. 1 and 2.

The materials of the composite resin molded product in this example are the same as those explained in the conventional example, and 1 is the base material;
2 is a foamed polyurethane layer integrally formed on the upper surface of the base material 1, and a polyvinyl chloride skin 4 having a two-layer structure is integrally formed on the upper surface of this foamed polyurethane layer 2. This polyvinyl chloride skin 4 has a two-layer structure in which a lower layer is a sheet 4a mainly composed of unfoamed polyvinyl chloride, and an upper layer 4b mainly composed of foamed polyvinyl chloride is formed above the sheet 4a, The surface of the uppermost foamed polyvinyl chloride layer 4b is formed into a slice surface 5 which is sliced with a cutter or the like in order to obtain a raised feel to the touch. Further, the foamed polyvinyl chloride layer 4b was able to obtain a good feel to the touch when the expansion ratio was set to 1.3 to 10 times, but this expansion ratio can be arbitrarily determined depending on the skin strength and the feel to the touch. Further, the thickness of the foamed polyvinyl chloride layer 4b is also arbitrary and is set in consideration of strength and moldability.

Thereafter, a matting paint 6 is applied to the sliced surface 5 of the foamed polyvinyl chloride layer 4b of the skin 4 obtained in this way by a spray method. It is possible to selectively use paints that have high adhesion to the surface of the foamed PVC layer, such as one-component lacquer-based or two-component urethane-based paints.
may be either transparent or colored. Further, the thickness of the coating film formed by applying this matte paint 6 can be arbitrarily set in consideration of durability, etc., but here, desirable results were obtained when it was set to 1 to 20 μm.

In this example, since the slice surface 5 of the foamed polyvinyl chloride layer 4b, which is the uppermost layer of the skin 4, is coated with the matte paint 6, the slice surface 5 is coated with the paint. This eliminates the "flickering" phenomenon and whitening on the surface without causing diffused reflection, thereby increasing the product value. In particular, in order to eliminate the "flickering" diffused reflection, it is effective to use a matte paint that is the same color as the foamed polyvinyl chloride layer 4b or is transparent. Note that the materials of the base material 1 and the foamed polyurethane layer 2 formed on the base material 1 are not particularly limited, and the foamed polyurethane layer 2 may not be provided.

In the above embodiment, the skin 4 has a two-layer structure, but it may have a one-layer structure except for the lower non-foamed polyvinyl chloride layer 4a, or conversely, it may have a structure of three or more layers by providing another lower layer. Needless to say, a multilayer structure may also be used.

[Summary of the idea]

As described above, the present invention provides a composite resin molded product having a foamed polyvinyl chloride skin 4 whose surface is slice-molded, in which a matte paint 6 is applied to the sliced surface of the foamed polyvinyl chloride skin 4. It is a composite resin molded product characterized by:

[Effect of idea]

Therefore, according to this composite resin molded product, due to the matte paint 6 applied to the slice surface 5,
Diffuse reflection on the surface of the slice is eliminated, and as a result, the appearance of the epidermis has a luxurious appearance, which has the effect of increasing the commercial value.

[Brief explanation of the drawing]

Fig. 1 is a sectional view showing an embodiment of the composite resin molded product of the present invention, Fig. 2 is an enlarged view of section A in Fig. 1, and Figs. 3 and 4 show conventional composite resin molded products. FIG. 1... Base material, 2... Foamed polyurethane layer, 4...
...Foamed polyvinyl chloride skin, 5...Slice surface, 6...Matte paint.

Claims (1)

[Scope of utility model registration request] In a composite resin molded product having a foamed polyvinyl chloride skin 4 whose surface is slice-molded, on the sliced surface of the foamed polyvinyl chloride skin 4,
A composite resin molded product characterized by being coated with a matte paint 6.