JPS5816845A - 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 The present invention covers the cut decorative surface with a sheet to effectively compensate for the impact resistance, bending strength, etc. of the decorative board, which has become brittle due to cutting, and to effectively compensate for the surface as a decorative material. The present invention relates to the disclosure of a continuous molding method for decorative board materials with particularly good properties.

Conventional board materials were generally colored or patterned using base paper as a decorative surface, but the decorative surface was relatively monotonous.

In view of the cosmetic defects in the board material, recent efforts have been made to cut the board surface to create an uneven pattern, avoid the flat cosmetic characteristics, and create a decorative surface with a three-dimensional sense of mass. However, it has various disadvantages due to the unique material characteristics of the board.

In particular, because the base paper for the board is partially or completely cut during surface cutting, the impact resistance of the board surface is extremely poor, and the bending strength, tensile strength, etc. It is also extremely vulnerable. These disadvantages have become more pronounced as the difference in unevenness θ) is increased for the purpose of enhancing the decorative function, and plywood is often created by laminating reinforcing boards.

However, the use of plywood significantly increases the manufacturing cost of the decorative board, and also causes the board material to become thicker and heavier, resulting in various inconveniences in single use and construction.

In addition, for boards with exposed cut surfaces, especially gypsum boards, gypsum slab boards, calcium silicate boards, etc., the interior of the surface may collapse due to wet/dry conditions or the addition of vibrations, making the durability particularly difficult. It is of poor quality and also contains defects such as adhesion of stone blue powder etc. due to contact.

The present invention was devised especially in view of the inconveniences of the conventional decorative boards, and the surface of the board, which has been made brittle by cutting, is covered with a sheet having excellent tensile strength and impact resistance. In order to eliminate the disadvantages of the previous examples, and to provide a decorative board material that has good cosmetic properties, that is, particularly good color tone, light selection, and patterning, we have developed a gypsum board, in particular, The purpose of this paper is to disclose a lamination method suited to the characteristics of boards such as gypsum slab boards, asbestos calcium silicate boards, and pulp cement boards.

The details of the present invention will be explained below with reference to a typical example shown in the drawings. (1) is a film made of a thermoplastic resin such as vinyl chloride or a film impregnated with a resin III having the same effect and imparted with heat softening properties. A sheet of impregnated paper with a supply roll (
2) to (2) were sequentially and continuously supplied. still,
In the illustrated example, the laminating machine (3) is interposed between the sheets (1), but the installation of the laminating machine (3) is not necessarily required and may be done at any time as needed. The sheet (1) was installed and, depending on the case, it was planned that the sheet (1) and plain paper would be pasted together. 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.

Adhesive (6) is applied to one side of the thus supplied sheet 11).
The molding roll (7) and the doctor roll (8) which also serves as a kneading machine are placed in front of the molding roll (5), and the guide rolls (9) to (9) are used to apply this. The sheet (1) to which the adhesive (6) is applied is applied while the sheet (1) is applied and the molding process is performed by guiding and supplying the adhesive (6) onto the surface of the roll (5).

The above-mentioned adhesive is generally intended to be a water-soluble adhesive such as ethylene vinyl acetate, acrylic vinyl acetate, epoxy adhesive, urethane adhesive, etc., but it is not necessarily limited to these, and other adhesives may be used depending on the adhesive purpose. It was planned to be used as an adhesive tube.

Next, the molding roll (5) installed is placed in the molding groove (1) at each position where the groove (1) a is to be molded for the supply sheet.
It is mounted as having a roll diameter and a roll width equivalent to the l1uA of a, the depth, and the sea 1-telθ)
A pair or a plurality of pairs of cough sheets (1) are installed on the supply front plate to hold the cough sheets (1).

In addition, these moldings are made so that the rolls (5) and (5) mesh with each other, and the diameter-enlarged roll part of one roll rotates in sliding contact with the other roll part whose diameter is reduced. It was planned that a pair of these would be installed, and that a plurality of pairs would be installed in series for the purpose of improving the molding characteristics.

In addition, this roll (5) is directly used as a heat roll, and the sheet f
1) is particularly meaningful in simplifying the formation, but it is not necessarily necessary to use these rolls (5) as a heating means and to use other equivalent heating means. It is planned that a heating means will be used in combination.

In particular, a heat softening device using a heat cable or heated air for the sheet (t) should be installed in front of the roll (5) or in the front of the roll (5).
).

Furthermore, the purpose of installing such auxiliary heating means is to dry the adhesive (6) on the sheet (1) appropriately, and when the heat roll (fl) itself is used as a heating element, It was also planned to be installed as an auxiliary facility.

In addition, the patterning on the roll (5) during steaming is made to match the cutting uneven surface of the separately supplied board (11), and the cutting uneven surface of the board 01) that is intended for this purpose. Various types of grooves are planned to match the surface, and are compatible with various grooves such as V-shaped grooves, U-shaped grooves, or arc-shaped grooves, without being limited to the shape of the roll (5) shown in the figure. It is planned to use a roll (5) having an external shape.

In this way, the sheet (1) that has been continuously molded using the roll (5) and an auxiliary heating means is dried properly by using the roll (5) or a separate heating means for the core molding. Guide roll Oz in the promised state
Gypsum board (supplied and laminated on the cutting surface in Lυ) through the gypsum board.

In addition, the corrugation in this guide roll (iZ is roll f5) and the sheet Ht produced by e-mo is carried out by rolling ( The molding in 5) is a roll with an uneven pattern that matches the uneven pattern.

Next, the board (11) to be supplied to the adhesive surface of the sheet jl) has a decorative surface by cutting a groove 0υa on the surface to be laminated, and this groove 0υa is cut on the surface to be laminated. The shape of the groove (1) a corresponds to the diameter dimension of the width of the roll (5) at the rear end of the sheet supply.

In addition, these boards are generally noncombustible boards that are planned to be cut and have a rough cut surface, such as gypsum board, pulp cement board, gypsum slab board, asbestos calcium silicate board, etc. It is planned that the use of

In the same text, the groove aυa in the board aυ is a groove (11) on the side of the board (lυ).
In the preparation of part (a), it is planned to use a separate layer of reinforcing boards, etc.

In addition, if there is cardboard on the surface of the supplied board 01), it is planned that the cough light surface base paper may be partially left as in the illustrated example, or it may be completely removed. In any case, the surface hardening treatment (on the cut end surface θ) is carried out by impregnation treatment with room-temperature hardening lactic acid emulsion, etc., and the hardened surface is coated with water-soluble ethylene vinyl acetate, acrylic vinyl acetate, epoxy, or urethane. The bonding surface with the sheet (1) is coated with an adhesive 03) such as 03).

Therefore, the laminating device for supplying sheet (1) and board (11) first uses basic heat rolls 04) to (14).
With this, the sheet (1) is heat-pressed onto this board 01), and the sheet 1) which has been molded into the groove (II) a in sequence with the auxiliary rolls (151 to (15))
The material is pressed in and heat-pressed.

The auxiliary roll ty (151-05) is installed in multiple stages, and the diameter of the roll is gradually increased and widened from the front position of the laminate toward the final direction, and the supply sheet (1) Gradually expand the sheet (It) into the groove αυa by heating and pressing it into the shape of the groove (It)a without forcing it.
1) can be firmly attached.

In addition, when heating with the auxiliary rolls (15) to (+51), the pressure supply of heating air B is separately scheduled from above the surface of the laminate sheet (1) which is scheduled to be heated by the auxiliary rolls (15) to (+51). Due to its characteristic structure, the sheet (1) material can be laminated easily, reliably, and quickly on the cut surface of a board such as a board with particularly fragile surface properties, This makes it possible to particularly improve the optical surface processing of this type of decorative board.

In addition, the steaming method is I11! Sheet (1) The material stretches naturally and extremely quickly, so it is easy to join with the 0υ board, and there is no damage to the sheet during lamination, or damage to the sheet after it melts or hardens and tears after lamination. This eliminates all accidents.

Since the sheet 11) is always pasted with sufficient tension using guide rolls, etc., there is no room for unnecessary twists or wrinkles on the laminate surface, making it possible to create a smooth laminate surface. That is.

The decorative board according to the present invention is suitable for mass production due to its characteristic structure during vaporization, and the close contact between the sheet (1) and the board 0υ is ensured, and when the sheet (1) is stretched and pasted, the sheet ( 1) Tearing damage to the material is effectively avoided, and the different properties of the board material are particularly compensated for, especially in the cut decorative surface.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway side view of a device that is a typical embodiment of the present invention, FIG. 2 is a side view of a cleavage component, and FIG. 3 is a same side view showing another embodiment. Figure 4 is a perspective view of the roll used;
Fig. 5 is a perspective view of the main parts showing the i and 1 attachment of the sheet, Fig. 6 is a perspective view of the main parts showing the lamination of the sheet, and Figs.
FIG. 1 is a sectional view of a main part showing heating IE%i by a heat roll and an auxiliary roll. In the figure, +11... sheet, t2+... supply roll, (3)... pasting machine, (4)... slitter device, (5)...0-)Iy, ((31 ...W contact agent, t7+...I' roll, +8)...Doctor roll, +91...Guide roll, UO)...Hose, (l+1...Gypsum board, 021...Guide Roll, 03)...adhesive, 0(a)...heat roll,
(151... indicates an auxiliary roll.

Claims (5)

[Claims] (1) A main step of applying an adhesive to one side of a heat-softening sheet, a step of heating and molding this adhesive-applied sheet, and this molding is performed by applying the above-mentioned adhesive onto a board surface having grooves that match the grooves. In the configuration consisting of the process of laminating and pasting cough sheets with the surface to which the adhesive is applied as the bonding surface, the heating molding process is performed using a roll and an appropriate heating means. A method for manufacturing a decorative board, characterized by comprising: (2) The method for manufacturing a decorative board according to claim 1, wherein the heating is performed by a heater placed close to the sheet surface. (3) The method for manufacturing a decorative board according to claim 1, characterized in that the heating is performed using a roll. (4) 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. (5) A method for manufacturing a decorative board according to claim 1 or 2, characterized in that the heat-softening sheet is paper impregnated with a thermoplastic resin.