JPH04325249A - Manufacture of decorative material - Google Patents

Abstract

PURPOSE:To flatten the protruding section of the periphery of a recessed section while molding fine irregularities, and to improve high-grade feeling of a decorative material by forming a decorative base material, in which the recessed section is molded by pushing by an embossed block, and pushing the base material by an embossed block, irregular relationship of which is formed in a reverse shape to a woody texture. CONSTITUTION:Specificed grain patterns 3 are printed on the surface of a vinyl chloride sheet 2 having specified thickness through a gravure printing method, etc., and a transparent vinyl chloride sheet 4 having predetermined thickness is heat-fused on the printed surface. A plurality of recessed sections 5 expressing specified grain conduit grooves and having predetermined depth are molded to the surface of said sheet 4, thus forming a decorative base material 6. The forming surfaces of each recessed section 5 are surface-treated by a woody-texture embossed block, in which a prescribed fine irregular shape is templated through an electroforming method, etc., and which is made of a metal. Protruding sections in the peripheral sections of each recessed section 5 are crushed and flattened while a plurality of fine irregularities 7 expressing a woody texture and having specified depth are molded, thus forming a decorative material 1.

Description

[Detailed description of the invention]

0001

[Industrial Application Field] The present invention can be applied to, for example, furniture, walls,
The present invention relates to a method for manufacturing a decorative material used as a surface material for floors and the like.

0002

2. Description of the Related Art For example, in decorative materials printed with wood grain patterns, wood grain conduit grooves are expressed by recesses formed by embossing plates.

0003

[Problems to be Solved by the Invention] The decorative material having the recessed portions formed by the above-mentioned embossing plate is formed on the surface of the base material 8 for decorative material, as shown in [FIG. 2]. Since burrs consisting of bank-like raised parts m are generated on the peripheral edges of the recessed parts 9, 9, etc., the reflection of light rays at the raised parts m becomes uneven, which deteriorates the sense of quality. It is a factor that causes Incidentally, burrs consisting of bank-like raised portions m generated on the peripheral edges of the recessed portions 9, 9, . . . on the surface of the base material 7 for decorative materials are
. This is a "return of the resin" caused by the resin being removed while still attached to the convex part of the resin.

[0004] Furthermore, the recessed portions 9, 9 and 9 due to the embossing process are
The base material 8 for decorative materials has a uniform, monotonous luster in the areas other than the concave portions 9 expressing the wood grain conduit grooves. When compared with a board, it has a different appearance, and the image of being cheap cannot be shaken off.

In contrast, the method of the present invention eliminates the presence of burrs consisting of bank-like bulges on the periphery of the depressions on the surface of the base material for decorative materials, and eliminates the presence of burrs on the surface of the wood grain base material. To provide a method for easily obtaining a decorative material in which unevenness is faithfully reproduced on the surface.

[0006]

[Means for Solving the Problems] The method for producing a decorative material of the present invention includes a preliminary step of obtaining a base material for a decorative material having a concave portion expressing a wood grain conduit groove formed by a pressing process with an embossing plate. Then, by performing a pressing treatment on the surface of the base material for decorative material with an embossing plate whose shape has an inverse relationship with the unevenness of the wood surface of the wood grain original board that is sufficiently shallower than the depth of the recessed part, A group of fine irregularities expressing the group of irregularities of the wood skin is formed on a part other than the concave part, and a raised part formed on the periphery of the concave part on the surface of the base material for a decorative material is crushed and flattened. A decorative material is obtained by the subsequent step of

[0007] In the method for producing a decorative material of the present invention having the above configuration, the sheet-like material used as a base material for the decorative material has at least the side to be embossed having recessed portions formed by an embossing process using an embossing plate. and,
It is necessary to have properties that allow it to maintain its shape, such as cellulose resin films such as cellophane and acetate films, polyolefin films such as polyethylene films and polypropylene films, polyvinyl chloride films, and polyvinyl chloride films. Vinyl resin films such as vinylidene chloride film, polyvinylidene fluoride film, and polyvinyl alcohol film, polyester films such as polyethylene terephthalate film, as well as acrylic film, polycarbonate film,
In addition to plastic films with a thickness of approximately 50 to 300μ such as nylon film, polystyrene film, ABS film, ethylene/vinyl acetate copolymer film, ethylene/vinyl alcohol copolymer film, and ionomer film, resin-impregnated paper and synthetic resin mixed Paper making, 200
~300g/m2 single-layer sheets made of gypsum board base paper, etc., laminated sheets of these sheets, and even,
Laminated sheets of these sheets and other papers, films, etc. are used, and polyvinyl chloride sheets are particularly suitable from the viewpoint of suitability for embossing.

[0008] These base materials for decorative materials may be colored by kneading pigments, printing, painting, etc., and in particular, they may be colored by kneading pigments, printing, painting, etc., and in particular, they may be colored with a brownish color similar to natural wood or pearl or metal that expresses the luster of wood grain boards. It is preferable that it be colored in a different tone. In addition, when the base material for decorative materials is used by being laminated on the surface with a wood grain pattern printed on it, the wood grain pattern printing located under the base material for decorative materials can be seen through. Of course, it is colored.

[0009] If necessary, the base material for decorative materials is printed with a pattern similar to the pattern on the surface of the wood grain, and the front and back surfaces of the base material for decorative materials, as well as the decorative materials made of laminated sheets, are printed. In the case of a base material, it is formed on the adhesive surface of a laminated sheet, etc.

[0010] As a method for obtaining a base material for decorative materials whose surface is formed with concave portions expressing wood grain conduit grooves, a plastic sheet with a predetermined color and printed pattern is separately manufactured. It is preferable to use the so-called doubling embossing method, which consists of laminating transparent plastic films of 1 to 3 by thermal adhesion and shaping the surface of the laminated transparent plastic films by embossing.

[0011] The concave portion formed by the embossing plate on the surface of the base material for decorative materials is aligned with the colored pattern etc. attached to the base material for decorative materials, and the wood grain conduit groove (depth 4
It is generally formed with a diameter of about 0 to 70μ), and is formed by an embossing plate that has the same shape as the unevenness of the wood grain original plate, only the direction of the unevenness is reversed, for example, by direct etching, electroforming mill, etc. It is shaped using an embossed plate that copies the concave portions of the original plate. In addition, when the surface layer of the decorative material base material is formed of a thermoplastic resin, the embossing process for forming the concave portion expressing the wood grain conduit groove on the surface of the decorative material base material can be performed by, for example, A method is used in which the surface is heated and softened using infrared radiation, hot air blowing, dielectric heating, etc., and then an embossing plate is pressed, and the embossing plate may be either a flat plate or a rotary roll plate.

[0012] The pressing treatment in the latter step of the method of the present invention is carried out on a matte surface having a group of fine asperities that are sufficiently shallower than the depth of the recesses formed by the embossing plate. The fine irregularities on the embossing plate used for the pressing process in the latter stage reproduce the surface shape of the original wood grain plate, and the fine irregularities on the embossing plate are formed by molding from the original wood grain plate, or Furthermore, the mold is used for electroforming or mill engraving, or is manufactured by a photoetching method using photolithography, for example, to create unevenness that expresses the fiber structure of the wood grain surface, scars from polishing or cutting, etc. consists of a group.

[0013]

[Examples] Hereinafter, the specific structure of the method for producing a decorative material of the present invention will be explained based on Examples.

Example 1 [0014] In [Fig. 1], a grain pattern 3, 3 of a zelkova grain board was printed on the surface of a 0.1 mm thick vinyl chloride sheet [RIKEN VINYL Co., Ltd.: W500] 2 by gravure printing. ...
・After printing, the wood grain pattern 3, 3 of the vinyl chloride sheet 2
A 0.1 mm thick transparent vinyl chloride sheet [RIKEN VINYL CO., LTD.: W 500 clear type] 4 is heat-sealed to the printed surface of . Depth 50μ to express wood grain conduit grooves
By shaping the concave portions 5, 5, . . . , a base material 6 for a decorative material in which concave portions 5, 5, .

[0015] A metal rotary embossing plate made by direct etching is used to thermally bond the transparent vinyl chloride sheet 4 and to form the concave portions 5, 5, etc. representing the wood grain conduit grooves of the zelkova. Heating drum temperature 160℃, linear pressure 1
t, speed 20m/min. The embossing conditions were as follows.

[0016]Furthermore, a fine uneven shape other than the wood grain conduit grooves on the surface of the zelkova board material was molded by electroforming on the shaped surface of the concave portions 5, 5, in the base material 6 for decorative material. Pressing treatment is performed using a metal wood grain embossing plate to crush and flatten the raised parts formed on the peripheral edges of the recessed parts 5, 5, etc., and to create a deep surface that expresses the wood skin in the non-recessed parts. Fine irregularities with a thickness distribution of 0.1 to 10 μ7, 7...
... was formed to obtain decorative material 1, which is the object product of the method of the present invention.

[0017]

Effects and Effects of the Invention In the method for producing a decorative material of the present invention, after obtaining a base material for a decorative material in which a recessed portion is formed by applying a pressing step using an embossing plate, the depth of the recessed portion is determined. This process involves performing a pressing process using an embossing plate that has an inverse relationship to the unevenness of the wood surface of the wood grain base material, which is sufficiently shallower than the surface of the original wood grain. The raised parts of the wood are crushed and flattened, and at the same time, the fine irregularities of the fiber structure of the original wood grain board are faithfully reproduced on the surface of the decorative board.

[0018] Therefore, in the decorative material obtained by the method of the present invention, the bulges on the periphery of the recessed portions, which were the cause of uneven reflection of light, are flattened, so that the reflection of light becomes uniform. Moreover, it becomes a decorative material in which the fine irregularities of the fiber structure in the wood grain original board are faithfully expressed on the surface of the decorative board, and is useful as a material with a high quality appearance.

[Brief explanation of drawings]

FIG. 1 is a cross-sectional view schematically showing an example of a decorative material obtained by the method for manufacturing a decorative material of the present invention.

FIG. 2 is a cross-sectional view of a model showing the state of a raised portion formed on the periphery of a recessed portion of a decorative material having a recessed portion shaped by a conventional embossing method.

[Explanation of symbols]

1 Decorative material 5 Recessed part 6 expressing wood grain conduit groove
Base material for decorative materials

Claims (1)

[Claims] Claim 1: After obtaining a base material for a decorative material having a concave portion expressing a wood grain conduit groove shaped by a pressing process using an embossing plate, on the surface of the base material for a decorative material,
By performing a pressing process using an embossing plate whose shape has an inverse relationship with the unevenness of the wood surface of the wood grain original board, which is sufficiently shallower than the depth of the recessed portion, the fine unevenness group representing the group of unevenness of the wood surface is removed from the recessed portion. A method for producing a decorative material, which comprises shaping the surface of the decorative material base material, and flattening the surface of the decorative material base material by crushing a raised portion formed on the periphery of the recessed portion.