JPS5818906B2 - Soushi Yokuban - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a decorative plate in which a workpiece having an uneven surface is coated with a decorative coating, and a method for manufacturing the same.

It has been conventional practice to adhere and form a convertible sheet made of synthetic resin or the like, which has been suitably colored or printed, faithfully along the original shape of the product onto the substrate body of the original product.

For example, a decorative sheet is integrally attached to a substrate body using a hot press method to form a decorative decorative board.

In this method of applying decorative sheets using the hot press method, if an uneven pattern is to be formed on the surface of the substrate, it is necessary to form unevenness corresponding to the shape on the pressed surface, which takes time and effort. This is an inconvenience.

In this regard, the recently developed TQ vacuum laminating method heats a synthetic resin decorative sheet to give it moldability, and then attaches the decorative heat to the substrate body by sucking the air underneath the substrate. The vacuum lamination method is an extremely excellent method that can laminate with the same equipment no matter how uneven the surface of the substrate is, and has recently been attracting a lot of attention.

However, the reality is that the excellence of this vacuum lamination method is diminished by the difficulty in manufacturing the substrate itself to which it is attached.

That is, the substrate is normally made of a somewhat thick plate, and the material is wood, inorganic material, or other engravable material.

In order to make this into a board body, the board material is engraved using a router (engraving machine) etc. so that it has the desired uneven pattern, but it cannot be manufactured by just engraving; it also requires polishing of the engraved surface. There are surface treatments that include sealing, sealing, and waterproofing.

As described above, conventional substrates for vacuum lamination have disadvantages in that the materials are expensive because they use thick flat plates, and the manufacturing process is extremely complicated.

Therefore, it was sometimes not possible to take advantage of the advantages of the vacuum lamination method.

In view of the above-mentioned problems, the present invention has devised a new structure of a decorative plate having a concavo-convex pattern on its surface, and has established a manufacturing method for the same, which enables mass production at low cost and overcomes the shortcomings of the conventional technology. .

Specifically, a molded body with surface irregularities formed by pouring a plastic material into a matrix is adhered to a thin plate such as plywood using an adhesive to form a substrate. This is a decorative board made by integrally pasting a synthetic resin decorative sheet with a transparent printed pattern on the substrate.

As shown in comparison with FIGS. 1 and 2 of the drawings, the first
The one in the figure is a conventional one, but in this case, the substrate 1 is made of a thick plate material, the surface of which is engraved with an uneven pattern, and then the decorative sheet 2 is attached by vacuum lamination.

On the other hand, in the case shown in Fig. 2, a thin plate material 3 such as plywood is used as a base material, and a molded body 5 having an uneven pattern on the surface is adhered to the base material through an adhesive layer 4. The decorative sheet 2 is integrally attached using a vacuum lamination method.

Next, the method for manufacturing a decorative board of the present invention will be described. First, a prototype (wooden pattern, mold, etc.) corresponding to the molded body 5 is created by hand, and a matrix is made based on this prototype.

The master mold may be made of silicone rubber, but another convenient method is to apply a vacuum forming method to the master mold using a synthetic resin film with excellent moldability, such as a thick hard vinyl chloride film or a bi-impact styrene resin film. Then, it can be molded along the uneven pattern of the original mold, and this can be used as a matrix.

A solidified plastic material such as plaster or synthetic resin is poured into the female matrix thus created, and when it is solidified and removed from the matrix, a molded product identical to the original mold is obtained.

A substrate is obtained by integrally bonding this molded body and a plate material with a suitable adhesive.

After that, a synthetic resin decorative sheet with an adhesive layer on the bottom surface and a light-opaque printed pattern is heated from above against the substrate, while the bottom side of the substrate is vacuum removed. The decorative sheet is integrally coated and bonded to the substrate by care.

Although masonry wax alone may be used as the molded article or material used in the present invention, in many cases, it is desirable to add a resin component to the masonry wax in order to impart toughness to the molded article.

Alternatively, a pseudo wood made by adding additives such as wood chips to synthetic resin may be used.

In short, any conventionally known material may be used as long as it flows according to the shape of the matrix and then solidifies strongly.

Examples of the present invention will be described below.

The molded product is poured into a mold and solidified, and this molded product is bonded to 5.5 m type lauan plywood using a vinyl acetate adhesive to form a substrate.

After applying a rubber-based pressure-sensitive adhesive to the above board (with a wood grain pattern applied to the back side using light-opaque ink), preheating the board at 80°C for 1 minute with the adhesive coated side facing down. ,1
Vacuum lamination is performed at 20°C, 1300 Torr, and 3 minutes.

As a result, a vinyl chloride decorative decorative board with good unevenness was obtained.

Example 2 The above-mentioned compound was a cold-setting plastic material, and this material was poured into the same mold as in Example 1 to create a molded product.

This molded body was bonded to a 10 mm thick particle board using urethane adhesive, and this board was made of vinyl chloride resin with an epoxy vinyl acetate adhesive applied to the lower surface in advance and a checkered light-transmissive pattern printed on it. The sheets were stacked and laminated under the same conditions as in Example 1 to obtain a good uneven decorative decorative board.

The present invention is as described above, and in contrast to the conventional three-dimensional and deep sculptural type decorative boards and decorative boards, which were time-consuming to manufacture and whose material substrates were extremely expensive. According to the present invention, carved decorative boards and decorative boards can be manufactured in large quantities at low cost.

In the present invention, the decorative sheet is attached using a vacuum lamination method, and since the decorative sheet has a printed pattern that is opaque to light, it is convenient because the substrate is not obscured and unsightly.

In addition, since the molded object with the unevenness is formed by pouring it into a matrix, it does not require any surface preparation such as sealing or waterproofing after molding, unlike the conventional uneven surface carved from wood. Moreover, it can be produced in large quantities.

As described above, the present invention is extremely excellent, and
It has a wide variety of uses, including cabinets, furniture and furnishings, and building materials such as wall materials, ceiling materials, and floor materials.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing a conventional decorative board, and FIG. 2- is a sectional view showing a decorative board of the present invention. 1...Substrate, 2...Decorative sheet, 3.
...Thin plate material, 4...Adhesive layer, 5.
...Molded object.

Claims (1)

[Claims] 1. A molded body with surface irregularities formed by pouring a plastic material into a matrix is attached to a plate material via an adhesive layer to form a substrate, and a synthetic resin with a printed pattern that is opaque to light is applied. A decorative board made by integrally adhering a decorative sheet manufactured by A.D. to the substrate by a vacuum lamination method.