JPS5940112B2 - Decorative board manufacturing method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for producing a decorative board in which a continuous decorative sheet of synthetic resin film, paper, cloth, etc. is attached from the surface to both sides of a plate-shaped object. It is.

There have been various types of decorative boards in which decorative sheets are pasted on the surface of a plate-shaped base material, but in order to expose the base material at the joints, the same decorative sheet as the surface is pasted so as to be wrapped continuously around both sides. is required.

Such decorative laminates have been put into practical use when the base material is rigid, such as plywood, but the manufacturing method involves pasting a decorative sheet with a width larger than the width of the base material on the surface of the base material. death,
After wrapping the decorative sheet protruding laterally from the surface of the base material on the side or back side depending on the material,
Since the adhesive is attached using tape or the like, it requires labor and is extremely inefficient, resulting in a high-priced product. In addition, recently, a decorative sheet that is wider than the plate-like base material is pasted on the surface of the base material, and the free end portions of the decorative sheet that protrude outward from both side edges of the base material are sequentially bent mechanically. A device has also been devised that attaches the decorative sheet to the side surface of the sheet, but mechanically folding the decorative sheet by wrapping it around the side surface may cause the base material to break when bent, if the base material is made of a fragile material. Furthermore, it is difficult to apply the decorative sheet to both sides of the base material due to misalignment, making it difficult to equalize the width of the part that protrudes from both sides of the base material. Since the adhesive layer becomes inconsistent and the appearance of the decorative board is impaired, the adhesive must be applied so as to wrap around the back side of the base material, which poses a problem when applied to a thick base material.

Furthermore, manufacturing products of various widths using one device lowers productivity because it is necessary to prepare both base materials and sheets according to the widths of the products.

For this purpose, another method is to attach a decorative sheet to the surface of the base material, cut it into appropriate widths, then cut the back side of both sides of the divided base material, and then apply a decorative sheet to the side surfaces. A pressure-bonding method has also been adopted, but in this method, a thin layer of the base material remains on the back side of the decorative sheet pasted to the side surface when it is cut and removed, so the decorative sheet is wrapped around the side surface of the divided base material. In this case, the corners tend to become rounded, which limits the range of use of the decorative board.

In order to eliminate such drawbacks, the present invention includes cutting out one or more grooves in advance on the surface of a plate-shaped base material, and forming step portions parallel to the grooves on both side ends. After pasting one decorative sheet on the surface of this plate-shaped base material, the decorative sheet is cut together with the decorative sheet from the center of the concave groove to form a plurality of decorative sheet main bodies having stepped portions at both ends. The present invention provides a method for manufacturing a decorative laminate, which is characterized in that the free end portions of the decorative sheet protruding from both side edges of the main body of the decorative laminate are then adhered to the stepped portions.

An embodiment of the present invention will be described with reference to the drawings. A plate-like base material 1 having a brittle property and made of an organic or inorganic material such as a soft fiberboard, a rock wool board, or a calcium silicate board has a predetermined width and a predetermined depth at the center of the surface. A concave groove 2 is cut along the entire length of the concave groove 2, and stepped portions 3, 3 having a width of half the width of the concave groove 2 and approximately the same depth are formed on the surfaces of both end portions of the concave groove 2. Cut parallel to the

Next, adhesive 4 is applied to the surface of the plate-shaped base material 1, and then the decorative sheet 5 is shaped into a plate shape so that both side parts 5a, 5a extend above the steps 3, 3 of the plate-shaped base material 1. It is pasted onto the surface adhesive layer 4 of the base material 1. At this time, the sheet portion 5a covering the concave grooves 2 of the plate-like base material 1 does not necessarily need to be kept taut, and may be left in a sagging state. In this way, the plate-like base material 1
After pasting the decorative sheet 5 on, as shown in Fig. 4,
The central part of the groove 2 provided in the plate-like base material 1 is a sheet part 5.
Cut along the entire length along with b to form two decorative board main bodies 1a,
1a is provided.

At this time, since the width of the groove 2 is twice the width of the stepped portion 3 and the depth of both grooves is approximately the same, the division of the groove 2 creates a step in the plate-like base material 1. A stepped portion 3' having substantially the same shape as the portion 3 is obtained, and by dividing the sheet portion 5b, a free end portion 5b' of the sheet is obtained which extends above the stepped portion 3'.

Next, if this decorative laminate main body 1a is a decorative laminate that is constructed with a single jointer, in this state, the back side or plate-shaped free end portions 5a, 5b' of the sheets protruding from both ends of the decorative laminate main body 1a Adhesives 6, 6 are applied to either one of the stepped portions of the base material, and the sheet portions 5a, 5b' are pressure-bonded to the stepped portions 3, 3' via the adhesive layer. Subject 1
If a requires actual processing, etc., the side surfaces of the main body 1a of the decorative board 1a are subjected to actual cutting, and then both free end portions 5a, 5b' of the sheet are bonded via adhesive layers 6, 6. It is pressed onto the side surface of the decorative laminate main body 1a to obtain a decorative laminate.

In the above embodiments, the two decorative laminate main bodies 1a, 1a were formed by providing the concave grooves 2 in the center of the plate-like base material 1 and cutting the central part of the concave grooves 2. However, the present invention is not limited to this, but a plurality of concave grooves having a width twice that of the stepped portions are cut at appropriate width intervals between the step portions on both sides of the wide plate-like base material 1, and the plate-like base material 1 is A plurality of decorative laminate main bodies 1a may be formed by pasting the decorative sheet on the surface of the base material and then cutting the center portions of these grooves.

As described above, the present invention cuts grooves of a predetermined width on the surface of a plate-shaped base material, and forms step portions parallel to the grooves at both end portions. After pasting one decorative sheet through an adhesive layer so that both sides extend above the stepped portion, a plate-like base material and a decorative sheet are attached along approximately the center of the groove. By cutting, a plurality of sheet-attached decorative laminate bodies having stepped portions at both side ends are formed, and then both side ends of the decorative sheet mainly consisting of the decorative laminates are attached to both sides of the decorative laminate body through an adhesive. Since this relates to a method for manufacturing decorative laminates that is characterized by adhesion, the decorative sheet is laminated to a plate-shaped base material several times the width of the decorative laminate obtained in advance, and this is attached to the central part of the concave groove. Since the main body of the decorative laminate is formed by cutting multiple sheets, it is possible to easily manufacture decorative laminates using thick base materials without using scales suitable for mass production, and also to manufacture decorative laminates of various widths with one machine. Furthermore, since the grooves that will become the sides of the decorative sheet are cut in advance on the surface of the plate-shaped base material, the lower surface side of the decorative sheet portion that covers the grooves is a space. Unlike the conventional method of excavating the bottom side of the sheet of the base material to which the sheet is attached, there is no need to consider the shape of the cutter so that the sheet is not damaged, and the sheet part can be easily excavated. This makes it possible to cut.

In addition, since the surface of the plate-like base material is not attached to the back surface of the sheet in the concave groove portion, the sheet can be attached to the side surface of the decorative laminate body immediately after the decorative laminate body is formed. To obtain a decorative board which can be manufactured efficiently, has decorative sheets neatly stuck along both side corners of the decorative board, and can be used in a wide range of areas.

Furthermore, by cutting off the lower end after forming the decorative sheet main body, the decorative sheet can be easily pasted from the front side to the back side.

[Brief explanation of the drawing]

The drawings show an embodiment of the method of the present invention, in which Fig. 1 is a cross-sectional view of a plate-shaped base material, Fig. 2 is a cross-sectional view of a base material with stepped portions and grooves cut, and Fig. 3 is a decorative cross-sectional view. Figure 4 is a cross-sectional view of the base material with the sheet pasted on it, Figure 4 is a cross-sectional view of the decorative board as a main body, Figure 5 is a cross-sectional view of the decorative board as the main body with the decorative sheet pasted on the side, and Figure 6 is a cross-sectional view of the decorative board. It is. 1...Plate base material, 2...Concave groove, 3.
...Stepped portion, 4,6...Adhesive layer, 5...
...Cosmetic sheet.

Claims (1)

[Scope of Claims] 1. Grooves of a predetermined width are cut on the surface of a plate-shaped base material, and step portions parallel to the grooves are formed at both ends, and the surface of the plate-shaped base material is After pasting one decorative sheet through an adhesive layer so that both sides extend above the stepped portion, a plate-like base material and a decorative sheet are attached along approximately the center of the groove. By cutting, a plurality of sheet-attached decorative laminate bodies having stepped portions at both side ends are formed, and then both side ends of the decorative sheet mainly consisting of the decorative laminates are attached to both sides of the decorative laminate body through an adhesive. A method for manufacturing decorative boards characterized by adhesion. 2 Appropriate cutting is performed on the side surface of the main body of the decorative sheet obtained by cutting the plate-like base material along approximately the center of the concave grooves, and then the both ends of the decorative sheet are brought into close contact with the side surface. A method for manufacturing a decorative laminate as defined in claim 1.