JPS5816843A - Manufacture of decorative board - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION This invention coats the cutting decorative surface with a sheet to improve the performance of noncombustible board materials such as gypsum slab boards, pulp cement boards, asbestos calcium silicate boards, etc. that have become brittle due to cutting. The present invention relates to the disclosure of a continuous molding method for a decorative board material that effectively compensates for impact resistance, bending strength, etc., and has particularly good surface characteristics as a decorative material.

Previously, the board (O) was generally made of base paper or the like as a decorative surface with colored markings or patterns; θ).

In view of the defects in the board material of IJ1'-F, recently the board surface has been cut to create an uneven pattern, avoiding the flat decorative characteristics and creating a decorative surface full of three-dimensional mass. Attempts have been made to create this type of board, but it has various disadvantages due to the unique material characteristics of this board.

In particular, because the surface of the board is partially or completely removed during surface cutting, the impact resistance of the board is extremely poor, and the bending strength and tensile strength of the board are extremely poor. etc. are also considered to be extremely vulnerable'. These inconveniences have become more pronounced as the difference in unevenness is strengthened for the purpose of enhancing the decorative function, and plywood is often created by laminating reinforcing boards.

However, using plywood is a cost-effective way to make decorative boards.
f significantly increases and induces thickening of the board material,
This caused various inconveniences during use and construction.

In addition, when the cut surface of a board is exposed, the interior of the surface may collapse due to dryness or exposure to vibrations, resulting in particularly poor durability. It contains many defects such as adhesion of calcium powder, etc.

The present invention was devised especially in view of the inconveniences of the conventional decorative boards f15, and the board surface, which has been made brittle by cutting, is coated with a sheet f having excellent tensile strength and impact resistance. It eliminates the disadvantages of the previous precedent in Nishide's story and has good cosmetic properties, i.e. color tone, light selection,
Disclosure of a laminating method particularly suited to the characteristics of this type of noncombustible board material in order to provide decorative boards with good patterns 1) is a sheet made of a film made of a thermoplastic resin such as vinyl chloride or a sheet made of impregnated paper impregnated with a resin having the same effect and imparted with heat softening properties, and the supply roll (2)
-(2) were continuously supplied in sequence. Similarly, in the illustrated example, a laminating machine (3) for the sheet (1) is interposed, but the laminating machine (3) with financial resources is not necessarily required, and can be used as needed. The sheet (1) and plain paper may be pasted together in some cases.

Reference numeral (4) is a slitter device which is designed to feed the sheet (1) at any time in a fixed width or fixed length.

An adhesive (6) was applied to one side of the sheet (1) thus supplied, especially to the end surface that does not make sliding contact with the guide plate (5), and an attached roll (7) also served as a kneading plate. A doctor roll (8) is placed in front of the guide plate (5), and with the guide rolls (9) to (9), the adhesive (6) is applied to the sheet (1) while the guide plate ( 5) It is designed to provide guidance.

The above-mentioned adhesive is expected to be a water-soluble adhesive such as ethylene vinyl acetate, acrylic vinyl acetate, epoxy adhesive, or urethane adhesive, but it is not necessarily specified as such, and may be used for various adhesive purposes. Therefore, it was planned to use other adhesives.

Next, the guide plate (5) is provided with a protruding strip (5) a in the feeding direction of the sheet (1).
5) a is a wide and low convex strip (particularly at the feeding front end of the sheet (1) for natural guidance and shaping of the sheet (l)).
5 and 1, and the feeding rear end of the sheet (11) is made so that the protruding stripes (5) a are gradually made higher and narrower, and the protruding stripes (5) a are made gradually higher and narrower, and the sheet (guiding and molding of The purpose of ensuring this is to use a separate air vacuum device. The supply front portion is located at this position and opened.

Adhesive (6) on the surface of the guide plate (5) consisting of
) so as to sequentially supply the sheets (1) coated with
Air A heated by a temperature-controlled infrared heater (not shown) is fed under pressure onto the surface of the sheet (11), and the sheet (1), which has been thermally softened by the pressure of the supplied air A, is heated by a convex strip (5). ) The molding is made by pressing into the inside of the protrusion (5) a, and this molding is made to become progressively deeper and narrower depending on the shape of the protruding strip (5) a.

Similarly, the patterning on the guide plate (5) on the paper is made to match the cutting uneven surface of the separately supplied board 01), and the cutting on the target board (11) ζ Various forms are planned to suit the uneven surface, and if it is configured as a curved pattern without being specified by the convex line (5) a, it can be used as a continuous or discontinuous pattern. Various forms are planned, such as when it is created.

In this way, the sheet (1) is continuously molded using the heated air A and the vacuum device, and the sheet (1) is coated with plaster via the guide roll 04 in a state where the adhesive (6) is dried to a certain extent by using the heated air A and the vacuum device. Board (cutting curve i at 1υ), laminated.

In addition, the guide plate (5) for fogging the paper is arranged so that the heated air A is blown in the opposite direction to curve the feeding front and back of the sheet (1) for the purpose of smooth continuous feeding of the sheet (110). (This is something I hadn't planned on doing.

Okay, this guide roll (12+ is the seam created with the guide plate (5)) The corrugation on this part is done so that the surface will not be destroyed. The attachment is a roll with an uneven pattern that matches the uneven pattern.

However, it is planned that the blowing of air onto the paper will be omitted as necessary, and the sheet will be expanded using a simple heating means. It was made in close contact with.

The method of spreading the sheet (11) is such that the sheet (1) is not forced to spread in the protruding strip (5) a, and this is the way the sheet (11) is pushed into the groove (1υa) of the board (11). 1) It was possible to reliably prevent the sheet (1) from peeling off due to the groove (Illa) by setting the extension to "zero".

Next, the board (Iυ is a decorative surface made by cutting a groove 0υa on the surface to be laminated, and this groove αl) is supplied with the adhesive surface of the board (Iυ is a surface to be laminated). The cutting surface is planned separately. Same, groove (
In the case of Illa, the groove Ua is the guide plate (5).
The convex strip (5) at the rear end of the sheet supply is formed into a groove shape that matches the groove shape.

In the same article, the groove α11a in the board αυ should be constructed as a concave step on the side.Of course, when creating a deep groove 0υa, in (1) lamination of reinforcing boards. The use of the board was planned separately.

1 Fence Old Man 8-16843 (4) Also, the surface of the supplied board θ1) is illustrated in Example 1.
It is planned that a portion of the cut edge will be left as shown here, or that it will be completely removed. At the same time, apply a water-soluble ethylene vinyl acetate, acrylic vinyl acetate, epoxy, urethane, etc. adhesive α3) to the sheet (1
It is prepared so as to be supplied to the joint surface with 1.

Therefore, the laminating device for supplying sheet (1) and board 01) first uses basic heat rolls Q4) to (+41) to heat and press this board ←υ(this sheet (1)). The shaped sheet (1) is successively pushed into the groove 0υa using the auxiliary rolls 09 to Q51 and bonded under heat and pressure.

3 Oka, Ko's auxiliary rolls aω~a are installed in multiple stages, and the diameter of the rolls gradually increases in diameter and width from the front position of the laminate toward the final direction, and the supply sheet (1)
The sheet (11) is made to firmly adhere to the groove Qlla by gradually expanding it and heating and pressing it into the shape of the groove ha without any force.

Similarly, the heating by the auxiliary rolls 09 to 01 is planned to be performed under pressure by supplying heated air B from above the sheet (1) surface of the laminate.

The present invention is capable of laminating the sheet (1) material easily, reliably, and quickly on the fragile cut surface of a board due to its unique structure on paper. This has made it possible to mass-produce this type of decorative board surface treatment.

4. In the steaming method, the sheet H11 material used spreads naturally (and is done very quickly, so it is easy to bond with the board α1), and there is no possibility of sheet breakage, melting, or melting during lamination. This eliminates all accidents such as curing and tearing of sheets after lamination.

In addition, since the sheet (1) is always applied with sufficient tension using guide rolls, etc., there is no room for unnecessary twists or wrinkles on the laminate surface, and the surface of the laminate is smooth. The present invention effectively compensates for the reduced surface properties of the cut board by using a special technique for producing a board, and provides an appearance with sufficient impact resistance and bending strength. A decorative board with an excellent shape can be provided at a low price.

[Brief explanation of drawings]

Fig. 1 is a partially cutaway side view showing a typical embodiment of the present invention, Figs.
￥4 Figure is a perspective view of the main part showing the molding of the sheet, Figure 5 is the E main view showing the main part of laminating the sheet, and Figures 6 to 10 are cross-sectional views of the main part showing the hot press bonding with the auxiliary roll. Indicates t (thing. Same, in the figure (11... Sheet, (2)... Supply rl-
(3) Laminating machine, (4) Slitter equipment, (51 Guide plate, (6) Adhesive, (Force) Roll, (8) ...Doctor Roll,' (
9)...Guide eye, (Ill)...Hose,
aυ...board, a21...guide roll, a moat
... Adhesive, 04) ... Heat roll, (t9 ... Shows the auxiliary roll. JP-A-58-16843 (5)

Claims (3)

[Claims] (1) A process of attaching an adhesive to one side of a heat-softening sheet, a process of heating and softening this adhesive-applied sheet and forming a spread pattern on the guide plate surface, and this forming process is performed by applying an adhesive to one side of the sheet to be provided. In a manufacturing method comprising the step of laminating and pasting a cough sheet on a board surface having an uneven pattern matching the pattern, using the adhesive surface as a bonding surface, the sheet is moved from the front to the rear in the guide plate. A method for manufacturing a decorative board, characterized in that the molding which gradually increases the thickness and width is performed by raising ribs, and the core molding is performed by opening vacuum holes between the ribs. (2) A method for manufacturing a decorative board according to claim 1 or 2, characterized in that the heat-softening sheet is a thermoplastic resin film. (3) A method for producing a decorative board according to claim 1 or 2, characterized in that the heat-softening sheet is bound with thermoplastic resin-impregnated paper.