JPH08150679A - Printed fancy laminated material - Google Patents

Abstract

PURPOSE: To obtain a printed fancy laminated material having high quality in which printed patterns are not deformed nor extinguished by heat in a manufacturing process. CONSTITUTION: A printed fancy laminated material consists of a printing base material 16 having a printed layer 20 formed on its surface, a base material 12 molded by injection molding, and an adhesive layer 14 arranged in between the base material and the printing base material so as to adhere them. The printing base material consists of a highly heat resistant resin material. Accordingly, the influence of heat in manufacturing on printing is reduced and print quality is maintained, so that a printed fancy laminated material of high quality can be obtained. As the influence of the heat at the time of injection molding is small, restriction of arrangement of gates of an injection mold is relieved, so that degree of freedom in planning a mold can be heightened.

Description

Detailed Description of the Invention

[0001]

This invention relates to furniture and interior materials for houses,
Regarding a printed decorative laminated material used as an exterior material, an automobile interior decorative panel, etc., the quality is improved by using a high heat resistant resin material as a printing base material.

[0002]

2. Description of the Related Art A printed decorative laminated material made of a synthetic resin molded body provided by printing patterns such as letters, patterns and colors is used for various interior and exterior materials such as interior decorative panels for automobiles. It is used as a decorative panel for home appliances. When manufacturing such a synthetic resin molded product, after molding the molded product into a predetermined shape, transfer it to the surface,
Although coating hot stamping and the like have been performed, the printed patterns are exposed on the surface by these methods, and thus the patterns may come off. Therefore, a clear layer may be further provided on the surface by post-coating, but this is troublesome and inconvenient. Moreover, it was difficult to produce so-called depth with these materials.

Therefore, as a means for solving these problems, a means using both vacuum molding and injection molding is disclosed in Japanese Examined Patent Publication No.
No. 0-19132. In this means, first, a flat plate-shaped synthetic resin film on which a pattern is printed or a laminate thereof is prepared. This synthetic resin film can use materials that can be used for vacuum forming,
Hard / soft vinyl resin, polyethylene, polypropylene, etc. are applied. Next, this synthetic resin film is placed in a female mold for vacuum molding and injection molding so that the printing surface is on the side opposite to the female mold side, vacuum molding is performed, and a predetermined shape is formed. . Then, the male mold is united with the female mold in which the synthetic resin film formed by vacuum molding is adhered, and the synthetic resin for the molded product body in a molten state is press-fitted from the injection passage formed in the male mold, Mold one piece. As the synthetic resin for the molded article body in this case, a synthetic resin that can be used for injection molding, such as polystyrene, ABS resin, polyethylene, polypropylene, polyvinyl chloride, acrylic resin, or the like is applied.

A similar manufacturing method is disclosed in JP-A-56-127435.
It is shown in the publication. In the manufacturing method, first, a printing substrate on which a printing layer is formed by various printing methods is prepared. ABS resin, polystyrene,
Acrylic resin, polyvinyl chloride, etc. are used.

Then, a transparent thermoplastic synthetic resin layer is adhered to the printing layer side of the printing substrate by heat fusion or an adhesive agent, and if necessary, heat is applied to the opposite side of the printing substrate. A plastic synthetic resin layer is formed by coating or the like, and as shown in FIG. 9, the printing substrate 16, the printing layer 20, and the transparent surface layer 22 are formed.
A laminated flat sheet-like decorative sheet 26 is obtained. afterwards,
The decorative sheet 26 is vacuum-formed into a three-dimensional shape, and a thermoplastic resin is injection-molded on the back surface of the printing base material 16 to form the base material 12.
1 is manufactured.

[0006]

However, in the case of the above-mentioned printed decorative laminated material, the high temperature thermoplastic resin is placed in the mold in which the decorative sheet 26 having the printing base material 16 on which the printed layer 20 is formed is arranged. Since the resin is injected and molded, the printing base material 16 is melted by heat, and the printing layer 2
When 0 was set, the design or the like was deformed or disappeared, and the quality of the printed decorative laminated material sometimes deteriorated. In particular,
This problem is likely to occur in the gate portion of the injection molding die, and thus the design of the die such as the arrangement of the gate is restricted.

The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide a printed decorative laminated material of high quality in which printed patterns and the like are not deformed or lost by heat in the manufacturing process. .

[0008]

The printed decorative laminate of the present invention comprises a printing substrate having a printing layer formed on its surface, a substrate molded by an injection molding method, the substrate and the printing substrate. And an adhesive layer for adhering these to each other, and the printing substrate is made of a high heat resistant resin material.

[0009]

In the printed decorative laminate of the present invention, since the printing base material on which the printing layer is formed is made of a high heat resistant resin material, the base material is formed by injection molding. The printing base material is not melted by the heat of the molten resin at that time, and the deformation or disappearance of the printing layer on the printing base material is prevented.

[0010]

EXAMPLES In order to make the present invention easier to understand,
Examples will be described. The examples show one aspect of the present description and do not limit the present invention. It can be arbitrarily changed within the scope of the present invention.

A printed decorative laminate 10 according to one embodiment of the present invention shown in FIG. 1 is a synthetic resin substrate 12 formed by injection molding.
The decorative sheet 24 is formed on the upper surface of the decorative sheet 24. The decorative sheet 24 includes the adhesive layer 14 disposed on the base material 12 side, the printing base material 16 on which the printing layer 20 is formed, and the printing layer 20 from the surface. And a transparent surface layer 22 capable of visually recognizing the above are sequentially stacked to form a schematic structure.

In the laminated printing decorative material 10 shown in FIG. 1, the printing layer 20 is formed on the base material 12 side of the printing base material 16, but this is not always necessary in the present invention. Shown decorative sheet 25 of laminated printed decorative material 10 '
As described above, the printing layer 20 may be formed on the side opposite to the substrate 12 on the printing substrate 16.

In the decorative sheet 24 shown in FIG.
The printing base material 16 is made of a transparent or colored transparent material so that the printing layer 20 can be seen through to the transparent surface layer 22 side. However, in the decorative sheet 25 shown in FIG. The material 16 may be opaque.

As will be described later, the base material 12 is integrally molded with the decorative sheet 24 by injection molding in which a molded decorative sheet 24 is inserted. A material suitable for various injection moldings, for example, polystyrene. , ABS resin,
Polyethylene, polypropylene, polyvinyl chloride, acrylic resin, polyamide, cellulosic plastic, polyurethane, polycarbonate, ABS-acrylic blend resin, ABS-polycarbonate blend resin, etc.
And these foams etc. are applied.

The adhesive layer 14 includes a decorative sheet 24 and a base material 12.
Is more reliable, and its thickness is 10
1000 μm is desirable, ABS, PVC,
Thermoplastic resins such as polypropylene, acrylic resin, polycarbonate, and polyamide, or various adhesives are applied. Further, it may be composed of two or more layers if necessary.

The print base material 16 has a print layer 20 of various designs according to the product formed on its surface, and it is essential that the print base material 16 is made of a high heat resistant resin. Polyethylene terephthalate is preferable as the high heat-resistant resin, but, for example, polybutylene terephthalate is also used. The printing layer 20 is printed on the printing substrate 16, and various printing methods such as gravure printing, offset printing, screen printing, and letterpress printing are used, and the printing layer 20 is composed of a single color or a plurality of colors.

As the transparent surface layer 22, a transparent one is used, but it is not always required to be completely transparent, and the printing layer 2 located below the transparent surface layer 22 from above the transparent surface layer 22.
It is sufficient that 0 can be seen through a predetermined amount.
The transparent surface layer 22 plays a role of preventing peeling and damage of the printed layer 20 and imparting luster, for example,
Polyethylene, polypropylene, polyvinyl chloride, polystyrene, ABS resin, polycarbonate, polyamide, polyester, polyacetal, acrylic resin, etc. are applied. The thickness of the printing substrate 16 is 5 to 50.
0 μm is preferable, and the thickness of the transparent surface layer 22 is 15 to 1
000 μm is preferable, and the total thickness of the transparent surface layer 22 and the printing substrate 16 is suitably 20 to 1000 μm.

It is possible to obtain a deeper finish by combining the transparent surface layer 22 and the printing substrate 16 in color.

The printed decorative laminated material 10 having the above structure can be manufactured, for example, as follows. First, a pattern such as wood grain is printed on the flat printing substrate 16 to form the printing layer 20. Then, the transparent surface layer 22 is superposed on one side, and the adhesive layer 14 is provided on the other side to manufacture the decorative sheet 24. Then, as shown in FIG. 3, the decorative sheet 24 is punched to form a decorative sheet processed body 24a having a product shape.

Thereafter, if necessary, press molding or the like is performed to obtain a three-dimensional processed shape as shown in FIG. 4 (a) or a two-dimensional processed shape as shown in FIG. 4 (b). It is assumed that At this time, the integrated decorative sheet 24 was punched and then press-molded. Each layer material was individually punched and press-molded, and then the layers were laminated. May be.

Next, the decorative sheet processed body 24a is shown in FIG.
As shown in (a), the mold mechanism 27 is mounted at a predetermined position in the lower mold 28. Then, as shown in FIG. 5B, the thermoplastic resin in a molten state which is heated by the injection passage 36 formed in the upper mold 30 is press-fitted to the processed decorative sheet 24a.
The base material 12 is injection-molded on the back surface of the so as to be integrated with it. Then, after the base material 12 is cooled and solidified, the upper mold 30 is opened to obtain the printed decorative laminated material 10 on which the decorative sheet processed body 24a is formed (see FIG. 5C). Further, if necessary, as shown in FIG. 6, the surface may be subjected to clear coating or the like.

In the printed decorative laminate of the present invention, since the printing layer 20 is formed on the printing base material 16 made of a high heat resistant resin material, when the base material 12 is injection-molded, it is melted at a high temperature. Since the printing base material layer 16 does not melt even when the resin is poured, the deterioration of the quality of the printed decorative laminated material due to the printing layer 20 being put down and melting or disappearing is suppressed.

A printed decorative laminate having the structure shown in FIG. 7 corresponding to the present example and a printed decorative laminate having the structure shown in FIG. 8 were manufactured as comparative examples, and the quality of the printed layer was evaluated. The printed decorative laminate shown in FIG. 7 uses a transparent polyethylene terephthalate film having a thickness of 25 μm as the printing base material 16, polyvinyl chloride having a thickness of 80 μm as the adhesive layer 14, and the adhesive layer 1
4 ', 200 μm thick ABS resin is used, and the substrate 1
No. 2 is an injection-molded ABS resin. In the printed decorative laminated material of the comparative example shown in FIG. 8, the transparent surface layer 22 is made of transparent PVC having a thickness of 80 μm, and the printed substrate 16 is made of 80
μm thick PVC, 200 μm thick ABS as adhesive layer 14
A resin is used, and the ABS 12 is similarly injection-molded as the base material 12. The temperature of the ABS resin at the time of injection molding is 230 ° C. After production, the printed decorative laminated material of the present example having the configuration shown in FIG. 7 was of a high quality without the print being melted at all, but it is considered to be the comparative example of the configuration shown in FIG. The printing base material melted, the printing layer was deformed, and the quality was low.

[0024]

The printed decorative laminate of the present invention has a printing base material having a printing layer formed on the surface thereof, a base material formed by an injection molding method, and an interposition between the base material and the printing base material. The printing base material is made of a high heat-resistant resin material and has an adhesive layer for bonding them. The quality of the print is maintained without any deformation or loss of the layers, resulting in a high quality printed decorative laminate. Further, since the influence of heat during injection molding is small, restrictions such as the arrangement of the gate of the injection molding die are alleviated, and the degree of freedom in designing the die can be increased.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram showing an embodiment of the present invention.

FIG. 2 is a schematic configuration diagram showing another embodiment of the present invention.

FIG. 3 is a perspective view showing one manufacturing process of the printed decorative laminate according to the embodiment of the present invention.

4A and 4B are perspective views showing an example of a printed decorative laminated material according to an embodiment of the present invention, FIG. 4A is a three-dimensional processed shape, and FIG. 4B is a two-dimensional processed shape. Shows the thing.

FIG. 5 is a process chart showing one manufacturing process of the printed decorative laminate of one embodiment of the present invention, wherein FIG. 5 (a) is a case where a decorative sheet is attached to the mold mechanism, and FIG. When molding is performed, FIG. 5C shows the molded body taken out.

FIG. 6 is a perspective view showing one manufacturing process of the printed decorative laminate of one embodiment of the present invention.

FIG. 7 is a schematic side sectional view of a printed decorative laminated material according to an embodiment of the present invention.

FIG. 8 is a schematic side sectional view of a printed decorative laminated material of a comparative example.

FIG. 9 is a schematic configuration diagram of a conventional printed decorative laminated material.

[Explanation of symbols]

10 ... Printing decorative laminated material, 12 ... Base material, 14 ... Adhesive layer, 16 ... Printing base material, 20 ... Printing layer, 22 ... Transparent surface layer, 24, 25 ... -Decorative sheet.

Claims (1)

[Claims] 1. A printing substrate having a printing layer formed on the surface thereof,
A base material molded by an injection molding method, and an adhesive layer interposed between the base material and the printing base material to bond them,
A printed decorative laminated material, wherein the printing base material is made of a highly heat-resistant resin material.