JPH0852760A - Printed decorative laminate - Google Patents

Abstract

PURPOSE:To prevent the appearance of sink marks etc., of resin molded on the back side on the surface of a printed decorative laminate which is made through injection molding. CONSTITUTION:At least a reinforcing layer 16 which is made of a metal, a thermosetting resin, or a thermoplastic resin with a high melting temperature, a printing layer, and a transparent resin layer 22 which makes the printing layer visible from the surface are laminated on an injection-molded synthetic resin base material 12. In this way, the affection of sinking etc., of the resin formed in the base material is prevented from appearing on the decorative surface, improving the quality of appearance as a printed decorative laminate.

Description

Detailed Description of the Invention

[0001]

This invention relates to furniture and interior materials for houses,
A printed decorative laminate used as an exterior material, an interior decorative panel for automobiles, or the like is provided with a reinforcing layer below the printing layer, thereby preventing the appearance of marks such as sink marks on the surface.

[0002]

2. Description of the Related Art A printed decorative laminate made of a synthetic resin molded article provided with characters or patterns printed thereon is used for various interior and exterior materials such as interior decorative panels for automobiles and home appliances. It is used as a makeup panel and the like.
When manufacturing such a synthetic resin molded product, after the molded product was molded into a predetermined shape, the surface was subjected to transfer, coating hot stamping, etc. In addition to being difficult, the printed design was exposed on the surface, so the design could come off.

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. First, a plate-shaped synthetic resin film on which a pattern is printed or a laminate thereof is prepared. A material that can be used for vacuum forming can be used for this synthetic resin film, and a hard / soft vinyl resin, polyethylene, polypropylene or the like is applied. Next, this synthetic resin film is fixed to a female mold for vacuum molding and injection molding so that the printing surface is opposite to the female mold side, and vacuum molding is performed. After that, the male mold is united with the female mold to which the vacuum-molded synthetic resin film is adhered, and the synthetic resin for the molded product body is press-fitted from the injection passage formed in the male mold to form an integrated product. Mold. 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.

Japanese Patent Laid-Open No. Sho 56-56 discloses a similar manufacturing method.
There is a publication of -127435. In the manufacturing method, a printing substrate on which a printing layer is formed is prepared by various printing methods. ABS resin, polystyrene,
Acrylic resin, polyvinyl chloride, etc. are used. Then, a transparent thermoplastic synthetic resin layer is attached to the print layer side of the print base material by heat fusion or an adhesive agent, and if necessary, the thermoplastic synthetic resin layer is attached to the opposite side of the print base material. The layers are formed by coating or the like to obtain a flat plate-shaped laminate 25 in which the printing base material layer 18, the printing layer 20 and the transparent resin layer 22 are laminated as shown in FIG. Then, the laminate 25 is vacuum-formed into a three-dimensional shape, and a thermoplastic resin is injection-molded on the back surface of the printing base material layer 18 to form the base material 12, thereby manufacturing the three-dimensional printed decorative laminate material 11. are doing.

[0005]

However, in the case of the printed decorative laminated material manufactured by the above-mentioned manufacturing method, the sink marks made of the synthetic resin in the injection molding and the marks of the ribs and bosses formed on the back surface are the printed decorative laminated materials. It sometimes appeared on the decorative surface of the material. In particular, a transparent resin formed on the decorative surface and having a mirror-finished surface had a problem that the sink mark of the resin on the back surface became more conspicuous on the surface. Furthermore, the sink marks appearing on this surface tend to cause a deterioration in appearance due to heat according to a weather resistance test, and therefore gradually appear when the printed decorative laminate material used as a product is used for many years. There is also a risk of

The present invention has been made to solve the above-mentioned problems, and in a printed decorative laminated material that uses injection molding in the manufacturing process, marks such as sink marks of the resin molded on the back surface appear on the surface. To prevent.

[0007]

The decorative printed laminate of the present invention comprises a synthetic resin substrate formed by injection molding, and a reinforcing layer made of at least a metal, a thermosetting resin or a high melting point thermoplastic resin. And a printed layer and a transparent resin layer from which the printed layer can be visually recognized.

[0008]

In the laminated printed decorative material of the present invention, since the reinforcing layer which is a thermally stable rigid body is interposed between the base material formed by injection molding and the decorative surface layer, The effect of the sink marks formed is prevented from appearing on the cosmetic surface.

[0009]

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.

Example 1 A printed decorative laminate 1 shown in FIG.
Reference numeral 0 indicates the layer structure of the printed decorative laminate of one embodiment of the present invention, which is obtained by forming the laminate 24 on the injection-molded base material 12 made of synthetic resin. 24
The adhesive layer 14, the reinforcing layer 16 made of a metal material, the print base layer 18, the print layer 20, and the transparent resin layer 22 that allows the print layer 20 to be visually recognized from the surface are laminated in this order and are roughly configured. ing.

As will be described later, the base material 12 is integrally molded with the laminated body 24 by injection molding in which the molded laminated body 24 is inserted. The material is suitable for various types of injection molding, such as polystyrene. , ABS resin, polyethylene, polypropylene, polyvinyl chloride, acrylic resin, polyacid, cellulose plastic, polyurethane, polycarbonate, ABS-acrylic blend resin, ABS-polycarbonate blend resin, and the like, and foams thereof are applied.

[0012] The adhesive layer 14 serves to more reliably bond the laminate 24 and the base material 12, and is not always necessary if the integration with the base material 12 is surely made.
A thermoplastic resin such as PVC, acrylic, polycarbonate, polyamide, polypropylene, or various adhesives is applied.

The reinforcing layer 16 is a thermally stable rigid body formed under the printing substrate layer 18, and is a thin metal plate such as aluminum. Further, the reinforcing layer 16 is not limited to a metal material, and a synthetic resin or the like can be used as long as it is thermally stable and has a certain level of strength, such as an epoxy resin, a urethane resin, a phenol resin, and a heat-resistant ABS resin. ,
A thermosetting resin such as nylon, PPS, polycarbonate, PVC, or acrylic can be applied, and a thermoplastic resin having relatively higher heat resistance than other layers can serve as a reinforcing layer.

The printing base material layer 18 is printed with various designs according to the product, and includes hard vinyl, soft vinyl, polyethylene, polypropylene, polystyrene, ABS resin, polyamide, acrylic resin, polyester, cellulosic plastic, Paper, non-woven fabric, etc. are used. The layer thickness is preferably about 0.05-5 mm. The printing layer 20 is formed by printing on the printing substrate layer 18, and various printing methods such as gravure printing, offset printing, screen printing, and letterpress printing are used, and it is composed of a single color or a plurality of colors.

In the laminate 24 shown in FIG. 1, printing is performed on the printing base material layer 18, but the printing is not limited to this, and the printing layer 20 is formed directly on the reinforcing layer 16. It doesn't matter if you do so. That is, the reinforcing layer 16
Also serves as the printing substrate layer 18, but in this case,
The material applied to the reinforcing layer 16 must be used.

The transparent resin layer 22 used is transparent, but it is not necessarily required to be completely transparent, and the printing layer 20 below the transparent resin layer 22 is located above the transparent resin layer 22. Anything that can be seen through a fixed amount can be used. The transparent resin layer 22 serves to prevent peeling and damage of the printed layer 20 and to impart gloss to the printed layer 20,
For example, polyethylene, polypropylene, polyvinyl chloride, polystyrene, ABS resin, polycarbonate, polyamide, polyester, polyacetal, acrylic resin, etc. are applied.

Instead of or on the adhesive layer 14, a porous material backing material made of non-woven fabric or wood may be provided as appropriate.

The printed decorative laminated material 10 having the above structure can be manufactured, for example, as follows. First, a flat plate-shaped adhesive layer 14, a reinforcing layer 16, a printing base material layer 18 on which a printing layer 20 is formed, and a transparent resin layer 22 are prepared and punched or the like to form each into a predetermined shape. . Next, these are laminated and pressed against each other by a pressing machine or the like to bond the layers to each other and three-dimensionally molded to form a three-dimensional laminated body 24. At this time, press-molding was performed after punching out each layer. However, after performing press-molding and adhering each layer, a step of collectively punching or the like to adjust the shape may be performed. Next, the laminated body 24 is fitted and mounted in a predetermined position in the lower die 28 of the die mechanism 26 as shown in FIG. Then, the thermoplastic resin is press-fitted into the cavity from the injection hole 34 of the nozzle 32 through the injection passage 36 formed in the upper mold 30, and the base material 12 is attached to the back surface of the laminate 24 so as to be integrated therewith. Injection molding. Then, after the base material 12 is cooled and solidified, the upper mold 30 is opened, and the printed decorative laminate material 10 in which the laminate 24 is formed on the base material 12 can be obtained.

In the printed decorative laminated material 10 of the present embodiment, since the printed layer 20 is embedded between the base material 12 and the transparent resin layer 22, the printed layer 20 may be peeled off or may be affected by an external force. It will not be damaged. Further, although the base material 12 is formed by injection molding, since the high-strength reinforcing layer 16 is interposed between the printing layer 20 and the base material 12, the mark of the sink mark of the base material 12, especially on the back surface, is formed. Since the formed ribs or boss marks are prevented from appearing on the surface of the transparent resin layer 22 side, the finished appearance is dramatically improved. In particular, even if the transparent resin layer 22 is mirror-finished, a poor appearance due to sink marks is unlikely to occur, and the appearance is improved.

[0020]

Industrial Applicability The printed decorative laminate of the present invention comprises a reinforced layer of at least a metal, a thermosetting resin or a heat-resistant thermoplastic resin on a synthetic resin substrate formed by injection molding. Since the printed layer and the transparent resin layer that allows the printed layer to be visually recognized from the surface are laminated, the interposition of this reinforcing layer prevents the appearance of the influence of the sink marks or the like formed on the base material on the decorative surface, The appearance quality is improved as a printed decorative laminate.

[Brief description of drawings]

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

FIG. 2 is a side sectional view showing injection molding in the manufacturing process of the printed decorative laminate according to the embodiment of the present invention.

FIG. 3 is a schematic configuration diagram showing a conventional printed decorative laminated material.

[Explanation of symbols]

10 ... Printing decorative laminated material, 12 ... Base material, 16 ... Reinforcing layer, 18 ... Printing base material layer, 20 ... Printing layer, 22 ... Transparent resin layer, 24 ... -Laminate, 25 ... Laminate.

Claims (1)

[Claims] 1. A reinforced layer comprising at least a metal, a thermosetting resin or a high melting point thermoplastic resin, a printed layer, and a printed layer visible on the surface of a substrate made of a synthetic resin formed by injection molding. And a transparent resin layer that is laminated.