JPH0449620B2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention is applicable to architectural interior materials such as wall covering materials and ceiling materials;
Decorative interior materials made of synthetic resin that are suitable for a wide variety of uses, including vehicle interior materials such as car door tops and headrests, motorcycle seat covers, sofa covers, various table centers, coasters, various footwear, and bags. More specifically, it relates to a so-called change color decorative interior material in which only the portion where the embossed pattern is applied to the ground color exhibits a color different from the ground color.

<Prior art> Conventionally, this kind of change-color interior material has a backing material such as a base fabric that is colored, and a foam layer that is colored in a different color from the backing material is provided on the top surface of the backing material. By applying a deep embossed pattern like an emboss to completely crush the foam layer, and at the same time extruding the crushed foam layer to the back side of the backing material, exposing the backing material, only the concave part of the embossed pattern is created on the foam layer of the base color. A technique is known in which the material takes on the color of the backing material. Recently, as shown in FIG. 3, after a base colored layer 13 is provided on the upper surface of a backing material 14 such as a base fabric, a transparent foam layer or a transparent colored foam layer 12 is provided, and a transparent protective layer 11 is provided on the surface of the colored foam layer 12. A chinge-colored interior material is known. When this interior material is given a deep embossed pattern such as Wenruder emboss as shown in Fig. 4, the recesses 15 will take on the color of the base colored layer 13, but this interior material has the following drawbacks at the stage of mass production. It was found that the

(a) If the base colored layer is a dark color such as black and the foam layer is a lighter color, a sharp change color will be obtained, but if the reverse is the case, a sharp pattern will not be obtained.

(b) If the foam layer is a transparent foam layer, the product will only have a cloudy feel as a whole due to the influence of the coloring of the underlying colored layer.

(c) When the foam layer is a transparent colored foam layer, a thin layer obtained by crushing the foam layer remains on the underlying colored layer, making it impossible to obtain a sharp changed color pattern.

(d) There is color blurring depending on the foaming ratio of the foam layer 13.

(e) Since the amount of pigment in the foamed layer is small, light resistance is poor and browning occurs easily.

(F) Since the product becomes thick as a whole, only a product with a crumbly feel can be obtained.

(g) Due to reasons (a) to (c), it is not possible to obtain a chain color product with free color combinations.

<Problems to be Solved> The present invention provides a novel change-colored interior material that eliminates the drawbacks of the prior art.

<Means for Solving the Problems> The present invention provides a transparent thermoplastic synthetic resin layer as the surface layer, and a thermoplastic synthetic resin layer that is easily dissolved or easily subjected to high-frequency heating and can be arbitrarily colored to be transparent or opaque. The base colored layer is a transparent or opaque thermoplastic synthetic resin layer that is difficult to melt or undergo high frequency heating and is colored in a different color from the intermediate colored layer, and the backing layer is white or the same color as the base colored layer. Each layer is formed with a colored backing material, and these four layers are integrally laminated to form a laminate, and a deep embossed pattern such as welder embossing is applied from the surface of this laminate, so that the concave portions form the base colored layer. It is designed to exhibit the color of

<Function> Due to the presence of the surface layer made of transparent thermoplastic synthetic resin, no intermediate colored layer remains in the concave portions of the embossed pattern created by welder embossing, and only the base colored layer is exposed through the transparent surface layer. A very sharp color change, that is, a change in color, can be obtained between the two colors. This is particularly noticeable when the synthetic resin used for this surface layer is hard to melt or hard to be heated by high frequency. In the case of a three-layer laminate consisting of an intermediate colored layer, a base colored layer, and a backing layer, which does not have the surface layer, the intermediate colored layer becomes thin and remains in the recesses formed by welder embossing, and the intermediate color layer other than the recesses remains. There is not much change in color between the colored layer parts, and there is very little change in color.

<Example> To explain an example of the implementation of the present invention with reference to the drawings, a laminate A includes a surface layer 1 made of a thermoplastic synthetic resin, an intermediate colored layer 2, a base colored layer 3, and a fabric made of knitted cloth, plain woven cloth, or cloth. , a backing layer 4 made of a backing material such as twill fabric, non-woven fabric, paper, etc. are integrally laminated, and a deep embossed pattern (concavity) is formed from the surface of this laminate A by a welder embossing method.
5, no intermediate colored layer remains in the embossed recesses 5, resulting in a structure in which a somewhat thinner surface layer 1' is in direct contact with the underlying colored layer 3, as shown in FIG. As shown in FIG. 2, the cross-section of the laminate A with the recesses 5 shows that the intermediate colored layer 2 is completely removed from between the surface layer 1 and the underlying colored layer to both sides (surroundings) of the recess 5, and swells up on the surface. A surface raised portion 6 is formed on the surface. In this case, the base colored layer 3 is also slightly raised and extruded on both sides (surroundings) of the recessed portion to form a thick portion 7 . Further, on the back surface of the backing material 4, the colored base layer 3 is press-fitted to form a so-called strike-through portion 3', although this depends on the pressing force during welder embossing.

The surface layer 1 is a layer made of a transparent thermoplastic synthetic resin, and although the most suitable synthetic resin is a resin that is difficult to melt or is difficult to be heated by high-frequency waves, this type of resin is not limited to such a resin. Any conventional resin well known in the technical field may be used. However, in relation to the intermediate colored layer 2 described later, it is possible to use a transparent resin layer that has the same melting characteristics or high-frequency heating characteristics as the intermediate colored layer 2; The sharpness of the change color is somewhat inferior compared to the layer that is less likely to be affected. However, there is no practical problem, and the presence of the transparent surface layer is important when compared with the case without the surface layer.

In the present invention, the property of being "hard to be melted or not easily subjected to high-frequency heating" or the property of being "easy to be melted or easily subjected to high-frequency heating" refers to the relative relationship between the surface layer 1 and the intermediate colored layer 2, and the relationship between the intermediate colored layer 2 and the intermediate colored layer 2, which will be described later. When vinyl chloride resin is used as the thermoplastic synthetic resin, the intermediate colored layer has a degree of polymerization.
If a resin of about 800 is used and the amount of plasticizer is 100 PHR, a surface layer made of vinyl chloride resin that is "hard to melt or difficult to be heated by high frequency" will have a degree of polymerization of about 1800 and an amount of plasticizer of 90 PHR. In this case, the resin with a polymerization degree of 1800 is sufficient for the intermediate colored layer with a polymerization degree of 800.
A resin with a so-called high degree of polymerization was used for the surface layer, but a surface layer that is difficult to melt or is not easily subjected to high-frequency heating can also be obtained by reducing the amount of plasticizer in a resin with the same degree of polymerization. Generally, resins that are difficult to be heated by high frequency include polymers with a molecular structure with few polar groups, but thermoplastic polyurethane or thermoplastic polyester can be used as the surface layer in the present invention.
These resins can be used alone or in combination with vinyl chloride resin.

The intermediate colored layer 2 is a layer colored in any color, and although the coloring is not particularly limited, it is composed of a thermoplastic synthetic resin layer that is easily melted or easily heated by high frequency in relation to the surface layer 1, and in fact, This intermediate colored layer becomes the ground color of the decorative interior material. Properties that are easily melted or easily subjected to high-frequency heating can be imparted to vinyl chloride resins by using resins with a low degree of polymerization, by using a large amount of plasticizer, and by adding processing additives that promote fluidity. . In addition, polymers with a molecular structure inherently containing many polar groups, such as vinyl chloride resin and ethylene-
Effective properties are also exhibited when vinyl acetate copolymer resin is used in combination with a surface layer of thermoplastic polyurethane resin.

The base colored layer 3 is a thermoplastic synthetic resin layer that is difficult to melt or undergo high-frequency heating in relation to the intermediate colored layer 2, and its principle and essential properties may be designed and conceived in the same way as the surface layer 1. The base colored layer 3 is a layer that is exposed in the recesses 5 of the embossed pattern when the laminate A of the surface layer 1, the intermediate colored layer 2, and the backing material 4 is welded. , exhibits a pattern color due to chain color.

The backing layer 4 is made of a so-called base fabric such as knitted cloth, plain woven cloth, woven cloth, twill cloth, etc., as well as a backing material such as nonwoven fabric or paper, and the colored base layer 3 is press-fitted or pressed under pressure during welder embossing. Porous structures that can be penetrated 3' are suitable. These backing materials 4 are
Since it has an originally white greige color, it is preferable to use this method, but in special cases, for example, when you want to make the change coloring even sharper, you may use a backing material dyed in the same color as the underlying colored layer.

A deep embossed pattern, that is, a recess 5 is provided from the surface of the laminate A in which the above surface layer 1, intermediate colored layer 2, base colored layer 3, and backing layer 4 are integrally laminated. By applying this deep embossed pattern, the behavior of each layer described above occurs. This is a phenomenon obtained depending on the properties of each layer. For example, if the transparent surface layer 1 is missing, the removal of the intermediate colored layer will be incomplete, and the result will not be as shown in Figure 2, and the underlying color will not be colored. If the layer is a thermoplastic synthetic resin layer with the same properties as the intermediate colored layer, the intermediate colored layer alone will not be removed, but will be removed together with the intermediate colored layer on both sides (surroundings) of the recess, and excellent chain coloring will not be obtained. do not have. Furthermore, if the backing layer 4 is removed, the deformation of the colored base layer or the flow to both sides of the recess 5 becomes significant, resulting in a structure in which a small amount of the colored base layer remains on the transparent surface layer, and the intermediate colored layer 2 is also eliminated. Becomes incomplete. Here, since the backing layer 4 is porous, the underlying colored layer is press-fitted into the porous portion, and by this press-fitting, flow to both sides of the recessed part and removal are suppressed, and the intermediate colored layer 2 The elimination of this will be complete.

Next, aspects of the present invention will be explained in detail using specific examples.

Example 1 (1) Lamination composition of base colored layer and backing layer 1 Vinyl chloride resin (average degree of polymerization 1800) 100-fold DOP (plasticizer) 90 Epoxidized soybean oil 3 Ba-Zn liquid stabilizer 3. Blue pigment (masterbatch) 6. The above blend is rolled into a blue sheet with a thickness of 0.25 mm by a calendering method, and this is laminated on a double-sided knitted polyester-silicoco blend fabric that has been subjected to sizing and tentering in advance.

(2) Intermediate colored layer lamination composition 2 Vinyl chloride resin (average degree of polymerization 800) 100% DOP (plasticizer) 100 〃 Epoxidized soybean oil 3 〃 Ba-Zn liquid stabilizer 3 〃 White pigment (masterbatch) 10〃 The above blend is rolled into a white sheet with a thickness of 0.15 mm by a calendar method, and laminated on the top surface of the laminate obtained in (1) above.

(3) Surface layer lamination formulation 3 Vinyl chloride resin (average degree of polymerization 1800) 100% DOP (plasticizer) 90 〃 Epoxidized soybean oil 3 〃 Ba-Zn liquid stabilizer 3 〃 The above mixture was calendered The sheet was rolled into a transparent sheet with a thickness of 0.15 mm and laminated on top of the laminate obtained in (2) above to obtain a laminate A.

(4) Leather drawing embossing Next, the laminate A was applied to a normal embossing machine to form fine leather drawings on the surface of the laminate A. At this stage, the chienzi color effect does not appear.

This leather-wrapped laminate was made of very beautiful white leather with a thickness of 0.7 mm.

(5) Welder embossing The surface of the white leather obtained in (4) above was subjected to welder embossing with a floral pattern reaching the underlying colored layer using a welder machine (Fuji Denpa Koki FDW420S-4KW). A sharp chinge color effect was obtained in which only the floral pattern part had bright blue depressions against the white background. The thus obtained chain color product was most suitable for the head rest of an automobile.

Example 2 Welder embossing was performed in the same manner as in Example 1 except that a resin with an average degree of polymerization of 1000 was used as the vinyl chloride resin for the intermediate colored layer in Example 1, and the results were the same as in Example 1. An extremely sharp chinge color effect was obtained.

Example 3 An ethylene vinyl chloride copolymer with an average degree of polymerization of 2800 was used instead of a vinyl chloride resin as the resin for the colored base layer in Example 1, and the color of the intermediate colored layer was gray and the color of the colored base layer was black. When welder embossing was performed in the same manner as in Example 1, an extremely elegant chinge-colored product was obtained, which was made of leather of the same color but had a deep black floral pattern.

Example 4 Welder embossing was performed on the double-sided knitted fabric in Example 1 in exactly the same manner as in Example 1, except that a knitted fabric dyed the same blue color as the base colored layer was used. A product was obtained in which the flower pattern part had a deep blue chienzi color effect.

Comparative Example 1 A white leather was made in exactly the same way as in Example 1, except that the surface layer was not present, and the same welder embossing as in Example 1 was applied. However, it exhibited a white background color, and almost no chienzi color effect was obtained.

Comparative Example 2 Welder embossing was performed in exactly the same manner as in Example 1, except that the resin for the base colored layer was the same as the resin for the intermediate colored layer, but the bulges on both sides of the recess were extremely large. The concave portions became a whitish blue color, and an excellent change color effect could not be obtained.

<Effects> In the present invention, the surface layer is a transparent thermoplastic synthetic resin layer, the intermediate colored layer is a transparent or opaque colored thermoplastic synthetic resin layer that is easily melted or easily subjected to high-frequency heating, and the base colored layer is a transparent thermoplastic synthetic resin layer. A backing material that is a transparent or opaque thermoplastic synthetic resin layer that is difficult to melt or undergo high-frequency heating and is colored in a different color from the intermediate colored layer, and the back layer is white or colored in the same color as the underlying colored layer. The four layers are integrally laminated to form a laminate, and a deep embossing pattern is applied from the surface of the laminate to provide a recess that reaches the base colored layer, and the recess takes on the color of the base colored layer. As a result, a change in color occurs between the recessed portion and the so-called intermediate colored layer other than the recessed portion, resulting in a material with a sharp color change, which is useful for automobile door trims, interior materials such as headrests, sofa cover materials, and various other materials. It is suitable for a wide variety of uses, such as table centers, coasters, motorcycle seat covers, various types of footwear, and bags, and when it is based on paper, it is also suitable as interior materials for buildings such as wallpaper and ceiling materials.

[Brief explanation of drawings]

FIG. 1 is a cross-sectional view of a laminate according to the present invention. FIG. 2 is a cross-sectional view of an interior material according to the present invention. FIGS. 3 and 4 are cross-sectional views of conventional examples. 2 is a surface layer, 2 is an intermediate colored layer, 3 is a base colored layer, 4 is a backing layer, and 5 is a recessed portion.

Claims (1)

[Scope of Claims] 1. The surface layer is a transparent thermoplastic synthetic resin layer, the intermediate colored layer is a transparent or opaque colored thermoplastic synthetic resin layer that is easily melted or easily heated by high frequency, and the base colored layer is melted. A transparent or opaque thermoplastic synthetic resin layer colored in a color different from that of the intermediate colored layer, which is difficult to heat or undergo high frequency heating, and the backing layer is white or each is formed with a backing material of the same color as the underlying colored layer, and A decorative interior material in which a laminate is formed by laminating four layers together, a deep embossed pattern is applied from the surface of the laminate, and the concave portions of the laminate exhibit the color of a base colored layer. 2. The decorative interior material according to claim 1, wherein the surface layer is a transparent thermoplastic synthetic resin layer that is difficult to melt or undergo high frequency heating.