JPH08156086A - Decorative laminate of flush structure - Google Patents

Abstract

PURPOSE: To provide a decorative laminate having a continuous pattern from the front surface to a rear surface in the laminate of a flush structure having a chamfered part. CONSTITUTION: A member C for forming the bottom of an end, a member B for forming the side and a member A for forming a chamfered part are sequentially cut while forming a V-shape groove between the members while holding the coupling by a surface material at the bottom of the groove from the rear surface of the end of a decorative laminate of a flush structure. Further, a cutout to be engaged with the member C is cut. The members are bent at the bottom of the groove, and the members A, B, C are bonded to the core material and the decorative material of the laminate with an adhesive. Thus, since a panel is assembled and then chamfered, a stable corner and side adhesive strength are obtained without being influenced by the bending of the panel.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a so-called flash structure in which a frame is formed of a wood-based material, and a core material obtained by putting a lumber in an appropriate place inside the frame is provided with a decorative material such as a decorative plywood on both sides. The invention relates to forming a chamfered portion of a decorative plate, and has a wide range of uses such as a door for construction, a door for furniture, and a tabletop.

[0002]

2. Description of the Related Art Conventionally, in order to obtain a decorative board having a flash structure, chamfering is applied to the corners of the front surface and side surfaces, and a decorative board having a continuous pattern from the front surface to the side surface and the back surface is obtained. As disclosed in Japanese Patent Publication No. 4-21997, first, a V-shaped linear cutting groove is first formed on a rear surface of a relatively thin decorative material at a position to be bent, and the cutting material is bent along the V-shaped groove. Prepare cosmetic materials. The front surface, the chamfered portion, the side surface, and the back surface of the core material are covered with the decorative material by adhering the folded decorative material in accordance with the cross-sectional shape of the core material whose side surfaces are previously processed into a predetermined cross-sectional shape. The method is known.

[0003]

However, in the above-mentioned conventional method, the core material and the decorative material have to be prepared separately, and therefore inventory control is complicated. Not only that, but most of the time, the wood material is used for the core material, so while it is processed into a predetermined cross-sectional shape and is in stock, due to changes in water content due to changes in weather, bending, warping, Defects such as twisting tend to occur. Therefore, when the decorative material is adhered to the core material, a gap is formed at the corner portion of the chamfer, so that the chamfered portion is not completely brought into close contact with each other, and defects such as poor adhesion are likely to occur.

[0004]

In order to solve the above-mentioned drawbacks of the prior art, the present invention is as shown in FIG.
A notch is made from the back surface of the decorative plate, an adhesive is applied to the notched cutting surface, and bonding is performed as shown in FIG.
The decorative plate includes a core material S and a decorative material F, and the decorative material F includes a surface material H and a base material K. The decorative material F is attached to the front surface side of the decorative plate. It is usual that the same decorative material F as that on the front surface is adhered to the rear surface, if necessary, or a material that is in balance with the surface material is adhered.

The details will be described below. In the sectional view shown in FIG. 1, the member forming the chamfered portion is A, the member forming the side surface is B, and the member forming the bottom surface of the end portion is C. FIG. 2 shows that the members C, B and A are formed in that order from the end of the decorative plate, and the members C, B and A and the decorative plate are connected to each other by the surface material H at the bottom of the V-shaped groove. While
Make V cuts from the back of the decorative plate, and
It shows that the member C forming the bottom surface portion of the end portion is engaged with the notch.

Then, an adhesive is applied to the cut portion, and the members C, B and A are bent at the bottom of the V-shaped groove as shown in FIG. 1 so that the members C, B and A respectively form the bottom, side and chamfer of the end. And glue. In addition, when making a cut in the decorative plate,
As shown in FIG. 2, the members A, B, and C may be recessed so as to include not only the decorative material F but also the core material S, or the core material S may not be included and only the decorative material F may be included. You can cut it in. The thicknesses of the members B and C can be freely set according to the thicknesses of the decorative material F and the core material S.

However, the thickness mn of the members B and C affects the size of the chamfered portion. That is, if the width of the chamfered portion A is made too small as compared with the thickness of the members B and C, the length of mn becomes longer than the length of mr, and it is not possible to bond without a gap as in FIG. Therefore, when chamfering with a small width, the thickness of the members B and C must be reduced accordingly.

The base material K constituting the decorative material is plywood,
A woody plate-like base material that is easy to cut, such as LVL, hard board, part board, and MDF, is suitable. Further, one or a combination of two or more of these plate-shaped substrates may be formed into a plate. The surface material H to be attached on the base material K is a flexible resin film or paper such as vinyl chloride having a printed pattern, or a thin wooden veneer whose back surface is lined with paper, non-woven fabric, resin film or the like. It is suitable that it is bent and easily bent at the corners.

The core material S is made of natural wood, plywood, L
Wood-based materials such as VL, hardboard, take-up board, and MDF that are easy to cut are suitable.

[0010]

According to the present invention, the stock management is easy because the step of separately preparing the core material and the decorative material is not required unlike the prior art. Further, in the prior art, since the core material and the decorative material are separately processed, and then combined and bonded, if there is a slight warp or twist during processing of the core material or the decorative material, the following problems occur. Occurs. That is, since the core material and the decorative material are prepared separately, it is rare that the tendencies such as the warp and the like of both members due to the change of the water content are the same. Therefore, in most cases, a gap is created when the two members are bonded together, and a bonding failure is likely to occur at that part.
In particular, such a defect is likely to occur at a corner portion, and it is difficult to find from the appearance.

By the way, in the case of a door, since the corner portion collides with a door stop or the like in particular, it is important that the adhesion of the portion is good or bad. According to the present invention, since the panel is completed with the decorative material F and the core material S and then the notch is formed so as to form the bent portion, even if the panel has a defect such as a warp and a twist, the core material S and the member The tendency of warpage and the like of A to C is the same, and no gap is formed in the adhesive layer at the corners as seen in the prior art. Therefore, the problem of poor adhesion resulting from this is solved, and good and stable adhesive strength can be obtained.

Further, the present invention does not require any other material except for the adhesive, in addition to one decorative plate, and requires only two steps of cutting and bonding. in spite of,
It is possible to produce a high-quality decorative board that is chamfered and has a continuous pattern from the front surface to the side surface and the back surface through the chamfered portion.

[Brief description of drawings]

FIG. 1 is a cross-sectional view near an end of a decorative board according to the present invention.

FIG. 2 is a cutaway sectional view of a decorative board according to the present invention.

[Explanation of symbols]

 A member constituting the chamfered portion B member constituting the side surface C member constituting the bottom surface F decorative material H surface material K base material S core material

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Claims (2)

[Claims] 1. A flash-structured decorative plate in which a decorative material composed of a surface material and a base material is attached to the surface of a core material of a wood material,
When forming the chamfered portion by the V-cut method, 1. From the rear surface of the end portion, a member C that forms the bottom surface of the end portion, a member B that forms the side surface, and a member A that forms the chamfered portion are V
1. A step of sequentially cutting and forming a V-shaped groove between each member while maintaining the connection by a surface material at the bottom of the V-shaped groove, Further, a step of cutting and forming a notch portion into which the member C is fitted, Next, a step of bending the above three members at the bottom of the V-shaped groove and adhering each of C, B, and A members to the core material and the decorative material of the decorative plate with an adhesive, the surface, the chamfered portion, and the side surface obtained by the above three steps. And a decorative plate that has a continuous pattern up to a part of the back surface. 2. A decorative board having a flash structure in which a decorative material composed of a surface material and a base material is attached to the surface of a core material of a wood material,
When forming the chamfered portion by the V-cut method, 1. From the rear surface of the end portion, a member C that forms the bottom surface of the end portion, a member B that forms the side surface, and a member A that forms the chamfered portion are V
1. A step of sequentially cutting and forming a V-shaped groove between each member while maintaining a connection by a surface material at the bottom of the V-shaped groove. Further, a step of cutting and forming a notch portion into which the member C is fitted, Next, a step of bending the three members at the bottom of the V-shaped groove and adhering each of the C, B, and A members to the core material and the decorative material of the decorative plate with an adhesive, the surface including the three steps, the chamfered portion, the side surface, and A method for manufacturing a decorative plate having a continuous pattern even on a part of the back surface.