JPH0587384B2 - - Google Patents

Description

Detailed Description of the Invention [Field of Industrial Application] The present invention relates to the laminated structure of synthetic resin sheets, and more specifically, the present invention relates to the laminated structure of synthetic resin sheets. The purpose is to obtain a sheet body with good texture and feel.

[Conventional technology]

Synthetic resin sheets such as polyethylene resin have excellent flexibility, content resistance, chemical resistance, tensile strength, etc., and can be manufactured easily and inexpensively, and have excellent processability. For this reason, it is used as a manufacturing material for various containers including tube containers.

One major feature of this synthetic resin sheet body is:
The surface was extremely smooth, and therefore it was difficult to get dirty, and even if dirt got on it, it could be easily wiped off, and it was also possible to obtain a glossy appearance.

[Problem that the invention seeks to solve]

As described above, one of the characteristics of conventional synthetic resin sheet bodies is that their outer surfaces are extremely smooth, so their appearance is shiny, hard, and cold, making them similar to Japanese paper, for example. It was not possible to obtain a soft and warm appearance at all.

Of course, there have been sheets with color decoration and surface treatments to create a soft and warm appearance, but when you actually touch the surface of this sheet with your fingertips, it feels completely soft. It lacked heat and warmth, and I was very dissatisfied with the texture itself.

In particular, in the case of tube containers, since the container itself is soft, it is strongly desired that the surface of the tube container has a soft and warm texture similar to that of Japanese paper, leather, or even textiles. Ta.

[Means and actions for solving problems]

The present invention was devised to solve the problems and dissatisfaction with the conventional examples described above, and utilizes the softness and warmth of the foamed resin layer and the matteness of the surface coating layer to create a synthetic resin sheet. It is constructed to give the surface of the body the feel and texture of Japanese paper, textiles, and even leather.

Hereinafter, a synthetic resin sheet body according to the present invention will be explained with reference to drawings showing examples of the present invention.

The sheet body 1 according to the present invention is a laminated sheet body molded from a synthetic resin material such as polyethylene resin, and has a foam layer 3 molded by foaming fine particles on the outer surface of a main body layer 2, and a foam layer 3 molded by foaming fine particles, and a foam layer 3 formed by foaming fine particles. It is constructed by sequentially laminating a patterned printing layer 4 and a gradation matte coating layer 5 formed from a coating agent in which a silica-based substance is added and dispersed in a coating liquid.

The foam layer 3 is a part for giving the outer surface of the sheet body 1 a soft and warm texture and feel.
In order to further increase the lamination adhesive strength with the main body layer 2,
It is desirable that the main body layer 2 be molded from the same resin material.

The printing layer 4 is drawn according to the product to be printed, such as Japanese paper, textiles, and even leather.
For example, if the product to be imitated is Japanese paper, it is best to use a dull pattern with a light color tone.

The gradation matte coat layer 5 is for making the outer surface of the sheet body 1 matte.
This gradation matte coat layer 5 emphasizes the softness and warmth of the foam layer 3.

As described above, the sheet body 1 according to the present invention is constructed by sequentially laminating the printed layer 4 and the gradation matte coat layer 5 on the outer surface of the foam layer 3. The extremely thin and large number of irregularities formed by the foaming layer 3 are not buried by the printing layer 4 and the gradation matte coat layer 5 and appear almost as they are on the surface of the sheet body 1. The numerous surface irregularities give it a soft and warm feel.

Further, since the gradation matte coating layer 5 forming the outer surface of the sheet body 1 is formed from a material in which a silica-based substance is added and dispersed in the coating liquid, it becomes matte and has a matte state.
This itself forms fine irregularities, and there is no risk of smoothing the outer surface of the sheet body 1.

[Example] The example shown in FIG. 1 shows the most basic structure of the present invention, and is particularly designed to have an appearance and texture resembling Japanese paper.

In the embodiment shown in FIG. 1, the main body layer 2 and the foam layer 3 are integrally extruded as a sheet material by coextrusion.

A light-toned picture pattern is printed on the surface of the foam layer 3, which is the surface of the extrusion-molded sheet material, that is, the surface of the laminated sheet body of the main body layer 2 and the foam layer 3, to form a print layer 4, and then the printed layer 4 is formed. A gradation matte coating layer 5 is applied to the surface of the foam layer 3 on which layer 4 is formed.
is applied by roller coating or spraying and laminated.

According to the results of many experiments, the best way to bring out the appearance and texture of washi paper is to apply the gradation matte coat layer 5 to 100% of the coating liquid.
In this case, the matte effect of the gradation matte coat layer 5 was good and the workability was also good.

The embodiment shown in FIG. 2 is constructed to have an appearance and texture resembling leather and textiles.

In the case of the embodiment shown in FIG. 2, the main body layer 2 and the foam layer 3 are integrally extruded by coextrusion, similar to the embodiment shown in FIG.

A pattern suitable for leather or fabric is printed on the surface of the foam layer 3, which is made up of the co-extruded body layer 2 and the foam layer 3, to form a print layer 4, and then a gradation matte coat layer 5 is formed. During covering molding, a concavo-convex pattern 6 is molded on the surface of the foam layer 3 by embossing at an appropriate time.

When the desired pattern to be created is to resemble leather, this uneven pattern 6 is an uneven pattern shape that imitates "wrinkles" or "pores" resembling the surface of the skin, and is similar to textiles. Needless to say, in the case of a textured material, it has a concave-convex pattern shape resembling a texture.

The time point at which the uneven pattern 6 is formed by embossing is not particularly limited, but in order to obtain better molding of the printed layer 4, it is preferable to perform the embossing after forming the printed layer 4. seems to be good.

In addition, when resembling textiles, the mixing ratio of the coating liquid and silica-based substance in the gradation matte coat layer 5 is almost the same as in the case of washi paper, but when resembling leather, the mixing ratio of the coating liquid to the silica-based substance is There is no problem even if the mixing ratio of the system substances is widened.

〔Effect of the invention〕

In this way, the sheet body 1 according to the present invention can have the texture and feel of the foam layer 3 formed by microparticle foaming as the same as the texture and feel of the surface, so it can obtain a soft and warm texture. It has become something that can be done.

In addition, the gradation matte coating layer 5 located on the surface not only exhibits a sufficient matte effect, but also allows the extremely fine and numerous irregularities on the surface of the foam layer 3 to appear almost as they are, making it even softer. This makes it possible to create a warm texture.

Furthermore, since the surface of the sheet body 1 is protected by the gradation matte coat layer 5, it is possible to prevent the occurrence of inconveniences due to the foam layer 3 being exposed, such as being easily stained or being susceptible to friction. .

As is clear from the above description, the sheet body according to the present invention can exhibit a soft and warm appearance and texture imitating the surface of Japanese paper, textiles, and even leather. Therefore, it is possible to obtain a product made of synthetic resin sheet with a completely new image, which has softness and warmth that could not be obtained with conventional products made of synthetic resin sheet.
In addition, it has a soft texture that feels good on the skin during use, making it possible to obtain a product that feels good when using it.Furthermore, despite having a foam layer, it has a surface that is resistant to stains and resistant to friction. It exhibits many excellent effects such as:

[Brief explanation of the drawing]

FIG. 1 is an enlarged sectional view showing the configuration of a basic embodiment of the present invention. FIG. 2 is an enlarged sectional view showing the configuration of another embodiment. Explanation of symbols 1; sheet body, 2; main body layer, 3;
Foaming layer, 4; Printing layer, 5; Gradation matte coating layer.

Claims (1)

[Claims] 1 A laminated sheet made of a synthetic resin material such as polyethylene resin, which has a foam layer 3 formed by foaming fine particles on the outer surface of the main body layer 2, and a printed layer 4 with a pattern formed by offset printing or the like. , and a gradation matte coating layer 5 formed from a coating agent in which a silica-based substance is added and dispersed in a coating liquid.