JPH09272177A - Decorative fitting member and its preparation - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a decorative fitting member wherein adhesion time is remarkably shortened and there exists no possibility of peeling-off by heating after adhesion and a method for preparing the member. SOLUTION: A decorative fitting member consists of a wooden base material 1 with a rectangular crosssection and a decorative sheet 2 wherein four bent channels 3 corresponding to each corner part of the wooden base material 1 and sticked to the wooden base material so as to surround it and channels 9 being approximately in parallel to the bent channels 3 in the neighborhood of both ends 2b and 2b of the decorative sheet 2 are formed and parts except the channels 9 and the wooden base material 1 are sticked together with an ordinarily curing adhesive 4 for wood and the channel parts and the wooden base material are sticked together with a hot-melt adhesive 5. The decorative sheet 2 is sticked instantaneously on the wooden base material 1 with the hot- melt adhesive 5 and by leaving it as it is, the ordinarily curing adhesive 4 for wood is cured to complete adhesion. After complete adhesion, as even when the hot-melt adhesive 5 is melted at high temp., the adhesive 4 for wood is not melted, there exists no possibility of peeling-off of the decorative sheet 2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a decorative plate in which a synthetic resin film, a woven fabric sheet treated with a synthetic resin, or a sheet-shaped material thinly scraped from high-quality wood, etc. The present invention relates to a decorative work member formed by pasting it on a wood base material, and particularly to a technique capable of stably and reliably adhering, shortening the manufacturing time, and supporting small lots.

[0002]

2. Description of the Related Art A wooden base material made of wood, plywood, particle board or the like is formed into a columnar shape or a plate shape, and a decorative plate is attached to the outside thereof to form a new pillar material, a panel material, a frame material or the like. This is traditionally done. FIG.
Is an example of the above-mentioned conventional example, which is a decorative work member formed by winding and adhering the decorative plate 2 around the surface of the quadrangular prismatic wooden base material 1.

As shown in FIG.
Four V-shaped bent grooves 3 corresponding to the four corners of the wooden base material 1 are cut. Then, the adhesive 4 for woodworking is applied to the adhesive surface by a roll coater and sent to a roller press. In the roller press machine, first, as shown in FIG. 10A, the wooden base material 1 is superposed on the center of the decorative plate 2 and pressed from above and below with a roller (not shown) to bond them. Next, as shown in FIG. 10 (b), the decorative board 2 is bent at the bending grooves 3 and 3 on both sides of the wooden base material 1 and pressed from both sides by rollers not shown, and finally both end portions of the decorative board 2 are bent. 2a and 2a are bent and pressed from above and below as shown in FIG. 10 (c), and the decorative plate 2 is attached so as to surround the wooden base material 1.

However, the ordinary curing type woodworking adhesive used in the above-mentioned prior art is of emulsion type such as vinyl acetate, and it takes a long time to cure at room temperature. Therefore, in the roller press machine for sticking the decorative board 2 to the wooden base material 1, the feeding speed of the wooden base material 1 is extremely slowed down, and the length of the roller press machine is lengthened, whereby the adhesive for woodworking 4 I was trying to make sure that the makeup parts were ejected after the curing.

However, there is a limit even if the length of the roller pressing machine is lengthened or the feeding speed is slowed down. Since the adhesive is not sufficiently cured in the decorative work member coming out of the roller pressing machine, the adhesive is not sufficiently cured. The agent had to be cured while being further pressed down until it was completely cured.

On the other hand, in addition to increasing the length of the roller pressing machine to slow down the feeding speed, the wood base material is preheated before being fed into the roller pressing machine, and the adhesive It has been attempted to secure the curing time and improve the productivity by combining various methods such as shortening the curing time. Still, the production rate is still slow,
The roller press machine also has a problem that the length is considerably long, the equipment cost is high, and the productivity is low.

Further, in the roller press, pressure cannot be applied between the rollers, and they are applied at points. Moreover,
With the above-mentioned normal-curing type adhesive for woodworking, it is not possible to instantaneously bond it only by pressing it with a roller. Therefore, if the wood base material has dimensional variation or "warpage" due to drying, these parts are easily peeled off between the rollers, and there is also a problem that adhesion defects are likely to occur particularly at the ends. .

On the other hand, it has been practiced to use a hot melt adhesive as the adhesive. When a hot melt adhesive is used, the adhesive can be instantaneously applied, so that the productivity can be dramatically improved.

However, the hot melt type adhesive is
If heated after bonding, it will melt again. Therefore, if the decorative work member bonded with the hot-melt adhesive is used at a high temperature, the adhesive part may be melted again and the wood base material and the decorative board may be peeled off.

Therefore, as shown in FIGS. 11 and 12, only the both ends of the decorative plate 2 are bonded with the hot-melt type adhesive 5, and the other parts are bonded with the usual vinyl acetate-based woodworking adhesive. A method was also proposed.

In order to perform such adhesion, it is necessary to prevent the emulsion type vinyl acetate adhesive from being applied to both end portions 2a, 2a of the decorative plate 2. Because when an emulsion type adhesive is applied,
This is because the hot melt adhesive will not adhere.

Therefore, as shown in FIG. 11, several rings 7 are fitted to the lower roller 6 of the roll coater, and both end portions 2a, 2a of the decorative plate 2 are pushed down by a guide or the like (not shown) to be fed and glued from above. When a vinyl acetate-based woodworking adhesive is applied by the roller 8, both end portions 2a, 2a
The woodworking adhesive was not applied to the. Then, after this, a hot melt applicator or the like is applied to both end portions 2a, 2a of the hot melt adhesive, and the adhesive is sent to a roller press machine, and the wood base material 1 is processed in the same manner as in FIGS. Was pasted on.

According to this method, the both ends of the decorative plate are adhered by the hot-melt type adhesive which is instantaneously adhered. Therefore, the vinyl acetate-based woodworking can be performed simply by leaving it in a state of being taken out from the roller press machine. The adhesive for use gradually hardens, and eventually the whole is firmly attached.

[0014]

However, this conventional technique has the following problems. That is, when both end portions of the decorative plate are adhered by the hot-melt adhesive 5, the hot-melt adhesive 5 is solidified after adhering and both end portions 2a, 2a of the decorative plate 2 are lifted as shown in FIG.
Further, if both end portions 2a, 2a are heated after the bonding, only these portions are peeled off. Further, when the size of the wood base material 1 is changed, the position of the bending groove 3 also changes, so the ring 7 has to be moved to a new position of the bending groove 3, but the ring 7 and the lower roller 6 The woodworking adhesive also infiltrates into the space between them, and the ring 7 is bonded to the lower roller 6, which makes it very difficult to move, and in addition, there is no standard for the size of movement, and since it moves with intuition, it is inefficient. It was target.
Further, in this work, the operator puts his / her hand between the rollers, which is not preferable for safety.

The present invention has been made in order to solve the above-mentioned problems, and the time required for bonding can be greatly shortened, the ring 7 becomes unnecessary, and the decorative member which does not come off even if heated after the bonding, and the same. And a manufacturing method.

[0016]

In order to achieve the above object, the present invention comprises a wood base material and a decorative board adhered to the surface of the wood base material, and a groove is formed on the adhesive surface of the decorative board. Alternatively, a thin plate thick portion is formed, and the groove or thin plate thick portion is bonded to the above-mentioned wood base material with a normal curing type woodworking adhesive, and the groove or thin plate thick portion and the wood base material are hot-melt type. It is characterized by a structure in which it is bonded with an adhesive.

Further, the wood base material has a corner portion, the decorative board has a bent groove corresponding to the corner portion, and the groove or the thin plate thick portion bonded by a hot-melt adhesive is
The structure may be formed separately from the bent groove. The groove or the thin plate thick portion may be formed at or near both ends of the decorative plate.

Alternatively, a long wood base material having a rectangular cross section,
A decorative board having four bent grooves corresponding to each corner of the wood base material and bonded so as to surround the wood base material, and the bent grooves are provided at both ends or in the vicinity of both ends of the decorative board. Forming a groove or thin plate thickness portion substantially parallel to the groove or thin plate thickness portion, and the wood base material other than the groove or thin plate thickness portion is bonded with a normal curing type adhesive for woodworking, and the groove or thin plate thickness portion and the wood base material Is characterized by being bonded with a hot melt adhesive. It is desirable that the volume of the hot melt adhesive is not larger than the volume of the groove or the thin plate thick portion.

The method of manufacturing the above-mentioned decorative work member comprises the steps of forming a long wood base material having corners, and folding a decorative board to be attached to the wood base material in accordance with the corners of the wood base material. A step of forming a curved groove, a step of forming a groove or a thin plate thick portion at a position different from the bent groove on the adhesive surface of the decorative plate, and a normal curing type on the adhesive surface excluding the groove or the thin plate thick portion A step of applying an adhesive for woodworking, a step of applying a hot-melt adhesive to the groove or the thin plate thick portion, and a roller press machine for applying a decorative plate coated with the adhesive for woodworking and a hot-melt adhesive And a step of attaching it to the wood base material while bending it in the bending groove. Prior to the step of applying the hot-melt adhesive to the groove or the thin plate thick portion, the decorative plate and / or the wood base material may be preheated in a drying furnace. Instead of the step of applying the hot melt adhesive to the groove or the thin plate thickness portion, the hot melt adhesive may be applied to the portion of the wood base material corresponding to the groove or the thin plate thickness portion.

[0020]

Embodiments of the present invention will be described below in detail with reference to the drawings. In FIG. 1, the wooden base material 1 is basically the same as the conventional example, and various wooden materials such as wood and plywood can be used as well as particle boards formed by solidifying wood fibers. Also, the shape shown is columnar,
It may have a plate shape or the like.

The decorative plate 2 is a decorative sheet in which a synthetic resin film such as vinyl chloride or a synthetic resin-treated woven fabric sheet is printed with a woodgrain pattern or the like on the surface of a plate material such as plywood, particle board or hard board. Or, it is a sheet-shaped material that is thinly cut from high-quality wood.

The decorative board 2 is provided with four bent grooves 3, 3, 3, 3 corresponding to the corners of the wooden base material 1. The bent groove 3 is cut from the back surface side of the decorative plate 2 toward the front surface side, but the film portion on the front surface is left so as not to divide the decorative plate 2. When the film portion of the bending groove 3 is bent as a hinge, the wooden base material 1 can be covered so as to be surrounded.

The decorative plate 2 having the bent groove 3 formed in this manner
Grooves 9, 9 are cut in the vicinity of both ends of the groove by a cutter. If the groove 9 is formed in parallel with the bent groove 3, it can be formed simultaneously with the bent groove 3 or continuously one by one by a device for forming the bent groove 3. Further, in this embodiment, the groove 9 has a rectangular cross section, but by changing the shape of the cutter, it is possible to have various cross sectional shapes other than the rectangular shape. Further, since the position and depth of the bent groove 3 and the groove 9 can be easily changed, the lot switching time can be shortened and small lot production can be supported.

Next, as shown in FIG. 1, an adhesive 4 for woodworking is applied to the adhesive surface of the decorative plate 2 as shown by cross hatching. As the adhesive 4 for woodworking, an emulsion type of vinyl acetate similar to that in the conventional example is used, and is applied by the same roll coater as in the conventional example.

FIG. 2 is a view corresponding to FIG. 11, but as shown in this drawing, it is not necessary to fit the ring 7 to the lower roller 6 in the present invention. By setting the depth of the groove 9 appropriately, it becomes possible to prevent the adhesive 9 for woodworking from being applied to the entire surface of the decorative plate 2 so as not to be applied to the groove 9. Then, as shown in FIG. 3, the hot-melt adhesive 5 is applied to the groove 9 to which the adhesive 4 for woodworking is not applied. The hot melt adhesive 5 is applied using a hot melt applicator, and the temperature and time for solidification are set to appropriate values.

In this case, when the decorative board 2 and the wooden base material 1 are cold, the applied hot melt is solidified, so it is preferable to preheat the decorative board 2 and the wooden base material 1 in a drying oven or the like. . However, this preheating may be lower than the preheating in the conventional example, so that a small drying oven is sufficient. In addition, this preheating may be unnecessary depending on the installation conditions, season, etc.

The decorative board 2 thus coated with both the woodworking adhesive 4 and the hot-melt adhesive 5 is pressed by a roller press or the like in the order shown in FIGS. 10 (a) to 10 (c), It comes out of the roller press machine as a decorative fabrication member as shown in FIG. Since the groove 9 portion is instantly bonded with the hot-melt adhesive 5, there is no concern that it will peel off when it is ejected from the roller press, and if it is left as it is, it will eventually adhere to woodworking. Agent 4
Also hardens and is fully bonded. It is not necessary to press with a roller or the like until the woodworking adhesive 4 is cured.

In the embodiment of the present invention, the volume of the hot melt adhesive 5 is set to be equal to or less than the volume of the groove 9. By doing so, it is possible to prevent the hot melt adhesive 5 from overflowing from the groove and lifting the end portion of the decorative plate 2 as shown in FIG.

Further, in the embodiment of the present invention, the hot-melt adhesive 5 is adhered only at the groove 9, and the periphery of the groove 9 is usually adhered by the hardened wood working adhesive 4. Therefore, even if the makeup-making member of the present invention is used in a place where the temperature is high and the hot-melt adhesive 5 is melted, the adhesive 4 for woodworking is not melted.
The decorative board 2 does not peel off from the wooden base material 1. Further, since a normal type inexpensive woodworking adhesive 4 can be used for most of the bonding surface, the running cost is reduced.

In the above embodiment, the groove 9 is provided in the vicinity of both ends 2b, 2b of the decorative plate 2, but the position of the groove 9 is not limited to this, and the end or center of the decorative plate 2 may be set. Any number may be provided at any position including. Further, although the bent groove 3 is exemplified by the V-shaped groove, it may be a U-shaped groove or a W-shaped groove (C surface).
Further, when the corners of the wooden base material 1 are rounded, the grooves may be comb-shaped. Further, the groove 9 may be formed in a curved shape, or the bent groove 3 may be eliminated altogether to bond two plate-shaped wood base materials 1 and the decorative board 2 together, or the bent groove 3 may be It is also possible to adopt a configuration in which only three parts of the rectangular wood base material 1 are covered from three to five, or five or more to surround a polygonal wood base material of pentagon or more. Although the hot melt adhesive was applied to the groove 9,
It may be applied to the wood base material 1 corresponding to.

5 and 6 show another embodiment of the present invention. In this embodiment, the groove 9 is formed wide and the end face 2b side of the decorative plate 2 is opened. In other words, it can be said that a step or a thin plate portion 10 is formed at both ends of the decorative plate. Then, the thin plate thickness portion 10
The hot-melt type adhesive 5 is applied to the portion to adhere.

FIGS. 7 and 8 show a modification of the embodiment shown in FIGS. 5 and 6, in which both ends 2a (see FIG. 9) outside the bending grooves 3 on both sides of the decorative plate 2 are thinned to be a thin plate. This is an example in which the thick portion 10 is used. Then, the entire thin plate thickness portion 10 is bonded with the hot melt adhesive 5 to have the same thickness.

[0033]

As described above, the decorative work member of the present invention comprises a wood base material and a decorative board adhered to the surface of the wood base material, and a groove or a thin plate is formed on the adhesive surface of the decorative board. A thick portion is formed, and other than the groove or the thin plate thick portion, the above-mentioned wood base material is adhered with an emulsion type adhesive which is usually hardened with a wood working adhesive, and the groove or thin plate thick portion and the wood base material are hot-melt type Since the structure is such that the wood base material and the decorative board are adhered to each other by the adhesive, it is possible to instantaneously bond the wooden base material and the decorative board, and it is possible to significantly increase the manufacturing speed of the decorative fabrication member. In addition, reliable adhesion can be stably obtained, and a wide variety of small lots can be handled.

Further, when the volume of the hot melt adhesive is not larger than the volume of the groove or the thin plate thick portion, it is possible to prevent the portion bonded by the hot melt adhesive from floating. A small (short) drying oven or roller press is sufficient.

[Brief description of drawings]

FIG. 1 is a perspective view illustrating a method for manufacturing a decorative work member of the present invention.

FIG. 2 is a diagram showing a state in which an adhesive for woodworking is applied to the decorative board of the present invention.

FIG. 3 is a front view showing a state in which an adhesive for woodworking and a hot-melt adhesive are applied to a decorative board.

FIG. 4 is a diagram showing a structure of a decorative work member of the present invention.

FIG. 5 is a perspective view illustrating a manufacturing method of another embodiment of the decorative work member of the present invention.

FIG. 6 is a view showing a structure of the makeup-making member shown in FIG.

FIG. 7 is a perspective view illustrating a method for manufacturing a decorative work member according to another embodiment of the present invention.

FIG. 8 is a view showing a structure of the makeup-making member shown in FIG. 7.

FIG. 9 is a perspective view for explaining a conventional method for manufacturing a decorative work member.

10 (a) to 10 (c) are views showing a step of attaching a decorative board to a wooden base material.

FIG. 11 is a view showing a state in which a woodworking adhesive is applied to portions other than both ends of a conventional decorative board.

FIG. 12 is a view showing a state in which both ends of a decorative plate in a conventional makeup-making member are bonded with a hot-melt type adhesive.

[Explanation of symbols]

 1 Wood Base Material 2 Decorative Boards 2b, 2b Both Ends (of Decorative Board) 3 Bent Grooves 4 Adhesive for Woodworking 5 Hot Melt Type Adhesive 9 Grooves 10 Thin Plate Thickness

Claims (8)

[Claims] 1. A wooden base material and a decorative plate adhered to the surface of the wooden base material, wherein a groove or a thin plate portion is formed on an adhesive surface of the decorative plate, and a portion other than the groove or the thin plate portion is formed. A decorative decorative member characterized in that the wood base material is usually adhered with a hardening type woodworking adhesive, and the groove or the thin plate thickness part is adhered to the wood base material with a hot-melt type adhesive. 2. The wood base material has corners,
The decorative plate has bending grooves corresponding to the corners, and the groove or the thin plate thick portion bonded with a hot melt adhesive is formed separately from the bending groove. The makeup-making member according to claim 1. 3. The makeup-making member according to claim 2, wherein the groove or the thin plate thick portion is formed at or near both ends of the decorative plate. 4. A long wood base material having a rectangular cross section, and a decorative board having four bent grooves corresponding to each corner of the wood base material and bonded so as to surround the wood base material. A groove or a thin plate portion that is substantially parallel to the bent groove is formed at or near both ends of the decorative board, and the wood base material other than the groove or the thin plate portion is usually a hardening type for woodworking. A decorative fabrication member characterized in that it is adhered with an adhesive, and the groove or the thin plate thickness portion and the wood base material are adhered with a hot-melt adhesive. 5. The decorative featured member according to claim 4, wherein the volume of the hot-melt adhesive is not larger than the volume of the groove or the thin plate thick portion. 6. A step of forming a long wood base material having a corner portion, and a step of forming a bending groove corresponding to the corner portion of the wood base material on a decorative plate attached to the wood base material, A step of forming a groove or a thin plate thick portion at a position different from the bent groove on the adhesive surface of the decorative plate, and applying a normal curing type woodworking adhesive to the adhesive surface excluding the groove or the thin plate thick portion A step and a step of applying a hot melt adhesive to the groove or the thin plate thick portion,
A decorative article characterized by comprising a step of applying a decorative board coated with an adhesive for woodworking and a hot melt adhesive to the wood base material while bending the decorative board in the bending groove by a roller press machine. Manufacturing method. 7. The decorative board and / or the wood base material is preheated in a drying oven prior to the step of applying the hot melt adhesive to the groove or the thin plate thick portion.
A method for manufacturing the described decorative fabrication member. 8. A hot melt adhesive is applied to a portion of the wood base material corresponding to the groove or the thin plate thickness portion instead of the step of applying the hot melt adhesive to the groove or the thin plate thickness portion. The method for manufacturing a makeup-fabricated member according to claim 7 or 8.