JP2002127693A - Manufacturing method of veneer sheet product and veneer sheet product manufactured by the method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a manufacturing method of a veneer sheet product, which is suitable for the production of a comparatively smaller-sized veneer sheet product and with which a flexible and hard-to-crack veneer sheet product can be obtained, and the veneer sheet product manufactured with the method. SOLUTION: A bonding layer (2) made of a heat-sensitive adhesive is formed on both the front surface and rear surface of a non-woven fabric (1). Next, a veneer (3) is pasted to each bonding layer (2) so as to temporarily bond the nonwoven fabric (1) with the veneers (3). After that, heat and pressure are applied to the veneers (3) temporarily bonded with the nonwoven fabric (1) in order to obtain the veneer sheet product.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a veneer sheet product and a veneer sheet product manufactured by the method, and more particularly, to a method for manufacturing a relatively small sheet-like product using a veneer sheet. The present invention relates to a method for manufacturing a veneer sheet product and a veneer sheet product manufactured by the method, wherein a veneer is attached to the front and back surfaces of a nonwoven fabric using an adhesive.

[0002]

2. Description of the Related Art Conventionally, relatively small sheet-like products such as general postcards are mainly produced from paper, and the relatively small paper-like sheet products include the above-mentioned general postcards. In addition, there are, for example, stationery, postcards, business cards, and cards such as birthday cards and Christmas cards.

[0003] By the way, with the recent diversification of hobbies, the need for these sheet-shaped products is not merely made of paper, but instead of paper products. Thus, postcards and the like made of natural trees and the like have been provided.

[0004] However, for example, when a sheet-like product is manufactured using solid wood, a certain thickness is required in consideration of cracks and breaks, and as a result, it is inconvenient to handle. Absent.

In order to solve such a problem, a method of manufacturing a sheet-like product by using a veneer which has been conventionally used for a decorative board or the like has been considered. Also provided are business cards.

Here, a method of manufacturing a decorative board or the like using a veneer will be described. In the case of manufacturing a decorative board using a veneer, first, Japanese paper as a base material is fixed on a base and this An adhesive is uniformly applied on the Japanese paper to form an adhesive layer, and then a veneer is attached to the adhesive layer. Then, after that, the veneer having Japanese paper pasted on the back surface was removed from the base and passed through a hot press machine, thereby applying heat and pressure to the veneer.

[0007] By the way, decorative panels are generally used for decoration of walls and ceilings and so are relatively large.
They are also mass-produced. On the other hand, as is well known, the veneer is thinly sliced from a natural tree, and therefore has to be elongated. Therefore, when a decorative board is manufactured using a veneer, a plurality of elongated veneers need to be arranged and adhered to the surface of the Japanese paper.

[0008] At this time, if an adhesive having a weak adhesive strength at room temperature is used, there is a risk that the veneers may shift during the process of arranging a plurality of veneers on the base material. 2. Description of the Related Art Conventionally, in the case of manufacturing a decorative board using a veneer, a liquid vinyl acetate-based adhesive having an adhesive force at room temperature has been used. That is, an adhesive layer made of a vinyl acetate-based adhesive is formed on the surface of the washi paper, and a plurality of veneers are attached to the adhesive layer while arranging them without dislocation. The product was completed by passing the sheet through a press and drying the adhesive thereby completely bonding the veneer and the Japanese paper.

[0009]

When a decorative panel is manufactured using a veneer as described above, the veneer is attached to the surface of Japanese paper using a liquid vinyl acetate adhesive having an adhesive property at room temperature. However, when a relatively small sheet-shaped product made of a veneer was manufactured using this method, the manufacturing cost was increased and a product having a high product value could not be produced.

That is, as described above, when a decorative board is manufactured from a veneer, the veneer is adhered to Japanese paper in a short time because a liquid vinyl acetate adhesive having an adhesive force at room temperature is used. At this time, it is necessary to prevent kinks and wrinkles of the Japanese paper, and this operation is very time-consuming. Therefore, it is good when manufacturing large products such as decorative boards, but when relatively small sheet-like products such as postcards are manufactured by this method, the manufacturing cost including labor cost per product is good. However, there is a problem that the cost is increased.

When a sheet-like product is manufactured by a conventional method, a liquid vinyl acetate adhesive having an adhesive property at room temperature is used. It is necessary to pass the paper through a hot press machine in a short time to prevent the occurrence of kinks and wrinkles in Japanese paper, but the decorative board using the veneer is relatively large as described above. Pressing a small sheet-shaped product using a hot press machine causes waste, while providing a separate small hot press machine increases costs.

Further, when a sheet-like product is manufactured using a veneer, it is necessary to attach the veneer to the front and back surfaces of the base material in order to enhance the product value. If a veneer is attached to the product, the product will have many kinks, twists, wrinkles, etc.

That is, when a liquid vinyl acetate adhesive is used, when the veneer is attached to Japanese paper, the veneer slightly expands due to the moisture of the adhesive. On the other hand, when sticking a veneer on both sides of Japanese paper, it is necessary to stick it on one side at a time.First, paste the veneer on the surface of the washi and pass it through a hot press machine. It is necessary to paste and pass this through a hot press machine, but this causes a time difference between the time when the veneer is completely adhered to the surface of the washi and the time when the veneer is attached to the back of the washi However, there is a problem that the elongation ratio of the veneer attached to the front surface and the veneer attached to the back surface is different, and the finished product is warped.

Furthermore, according to the experience of the present inventors, when a veneer is attached to Japanese paper using a vinyl acetate adhesive, the finished product becomes rigid, easily cracked, and the product value is reduced. It has been found that the range of use as a material is low and narrow.

As described above, in manufacturing a relatively small sheet-shaped product using the veneer, the conventional method is directly followed, and thus there are various problems in the manufacturing process and in the completed product. For this reason, hitherto, only a business card has been provided as a relatively small sheet product using a veneer.

Therefore, the present invention is suitable for the production of a sheet product using a relatively small veneer, and a method for producing a veneer sheet product capable of obtaining a flexible and hard-to-break veneer sheet product. It is an object to provide a veneer sheet product to be manufactured.

[0017]

The inventor of the present invention has adopted a method of bonding a veneer to the front and back surfaces of a nonwoven fabric using a heat-sensitive adhesive as a result of repeating trial and error on a method for solving the above-mentioned problems. As a result, it has been found that the problem can be solved.

That is, in the method for producing a veneer sheet product of the present invention, an adhesive layer made of a heat-sensitive adhesive is formed on the front and back surfaces of the nonwoven fabric, and then a veneer is attached to each of the adhesive layers to form the nonwoven fabric. And a veneer plate are temporarily bonded, and then heat and pressure are applied to the veneer plate temporarily bonded to the nonwoven fabric.

As described above, in the present invention, a method for temporarily bonding a veneer to the front and back surfaces of a nonwoven fabric using a heat-sensitive adhesive having a low adhesive strength at room temperature, and then completely bonding the veneer is used. Has adopted. Therefore, it is possible to store the temporarily bonded product in stock and then use a complete bonding method as needed, which improves the work efficiency compared to the conventional method that requires complete completion of the entire manufacturing process in a short time. Can be achieved.

Further, since Japanese paper can be attached almost simultaneously to the front and back surfaces of the nonwoven fabric, the number of working steps can be reduced, and the warpage of the product can be eliminated.

Further, as a result of experiments conducted by the present inventor, it has been found that when a veneer is adhered to a nonwoven fabric using a heat-sensitive adhesive, a flexible product can be obtained.
ADVANTAGE OF THE INVENTION According to this invention, it is hard to be broken and it is possible to obtain the veneer sheet product of high product value.

[0022]

BEST MODE FOR CARRYING OUT THE INVENTION In the method for manufacturing a veneer sheet product of the present invention, first, an adhesive layer made of a heat-sensitive adhesive is formed on the front and back surfaces of a nonwoven fabric, and then a veneer is attached to each of the adhesive layers. Then, the veneer is temporarily bonded to the nonwoven fabric. Then, after that, heat and pressure are applied to the veneer temporarily bonded to the nonwoven fabric, whereby the veneer and the nonwoven fabric are completely bonded.

It is to be noted that the step of forming an adhesive layer with a heat-sensitive adhesive on the front and back surfaces of the nonwoven fabric is omitted, and instead, a nonwoven fabric having an adhesive layer with a heat-sensitive adhesive on the front and back surfaces may be used. .

Further, in the veneer sheet product of the present invention, an adhesive layer made of a heat-sensitive adhesive is formed on the front and back surfaces of the nonwoven fabric as a base material, and the veneer is bonded to each of the adhesive layers. I have.

[0025]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the method for producing a veneer sheet product of the present invention will be described with reference to the drawings. FIG. 1A shows a nonwoven fabric 1 as a base material.

In this embodiment, first, FIG.
In the above, a heat-sensitive adhesive is applied to the front and back surfaces of the nonwoven fabric 1 to form the adhesive layer 2.

Next, in FIG. 1C, a veneer plate 3 having a shape corresponding to the shape of the nonwoven fabric 1 is overlaid on each exposed surface of the adhesive layer 2, and the veneer plate is temporarily bonded.

Here, the heat-sensitive adhesive will be briefly described. As is well known, this heat-sensitive adhesive has a small adhesive strength at room temperature and exerts a strong adhesive strength by applying heat thereto. Specifically, it has a slight adhesive strength at room temperature of 20 degrees to 25 degrees, and 100 degrees to
It exhibits an adhesive function at a temperature of 120 degrees, and is generally made of a material such as synthetic rubber or acrylic. Therefore, in the present embodiment, attention was paid to the performance of the heat-sensitive adhesive, and a method of temporarily bonding a veneer to the front and back surfaces of the nonwoven fabric using the adhesive was adopted. That is, the veneer is superimposed on the adhesive layer at a temperature condition of 20 to 25 degrees, whereby
The adhesive layer 2 and the veneer 3 are temporarily bonded. In this example, a heat-sensitive adhesive manufactured by Nitto Denko (product number: M5200)
Using a non-woven fabric in which this adhesive has been applied to the front and back surfaces in advance, a veneer was temporarily bonded to the front and back surfaces. Further, as the veneer temporarily bonded to the nonwoven fabric, a cut-off material or scrap material that is discarded in a manufacturing process of a decorative board using the veneer is used, and effective use of resources is achieved.

Then, if necessary, heat and pressure of about 100 to 120 degrees are applied to the veneer temporarily bonded to the adhesive layer 2, thereby completely bonding the veneer 3 to complete the product.

FIG. 1 (C) shows the finished product, in which 1 is a nonwoven fabric, 2 is an adhesive layer made of a heat-sensitive adhesive formed on the front and back surfaces of the nonwoven fabric 1, and 3 is an adhesive layer. And 4 is a veneer sheet product completed by the manufacturing method according to the present embodiment.

And, as this veneer sheet product 4,
Various types of cards such as general postcards, postcards, stationery, birthday cards, Christmas cards, and the like are conceivable.

As a method of applying heat and pressure to the temporarily bonded veneer plate, for example, a method using an iron can be considered, which eliminates the necessity of using an expensive hot press or the like, and reduces the manufacturing cost. be able to.

As described above, in the present embodiment, since the nonwoven fabric as the base material and the veneer are bonded by using a thermosensitive adhesive having a low adhesive strength at room temperature, the production is stopped at the temporary bonding stage. ,
Thereafter, heat and pressure may be applied to this as needed to complete the product. Therefore, compared with the case of manufacturing a relatively small veneer sheet product using the conventional decorative board manufacturing method that must go through the entire manufacturing process in a short time,
The cost required for manufacturing can be reduced.

Further, unlike the conventional method, it is not necessary to apply heat and pressure in a short time after attaching the veneer to the nonwoven fabric, since a heat-sensitive adhesive having a low adhesive strength at room temperature is used. Since the veneer can be bonded to the back surface almost at the same time, the number of manufacturing steps can be reduced as compared with the case where the conventional method is employed, and thus the cost can be reduced.

Further, as a result of the experiment of the present inventor, when a nonwoven fabric is used as a base material and a veneer is adhered to the nonwoven fabric using a heat-sensitive adhesive, a product which is flexible and hard to break is obtained. Therefore, it is possible to obtain a veneer sheet product having a high product value in the veneer sheet product manufactured according to the present embodiment.

[0036]

The method for manufacturing a veneer sheet product of the present invention and the veneer sheet product manufactured by the method are implemented in the above-described embodiment, and have the following effects.

According to the method for producing a veneer sheet product of the present invention, an adhesive layer made of a heat-sensitive adhesive is formed on the front and back surfaces of the nonwoven fabric, and then a veneer is attached to each of the adhesive layers to form the nonwoven fabric and the veneer sheet. Are temporarily bonded, and then heat and pressure are applied to the veneer plate temporarily bonded to the nonwoven fabric.

As described above, in the present invention, a method of temporarily bonding a veneer to the front and back surfaces of a nonwoven fabric using a heat-sensitive adhesive having a low adhesive strength at room temperature, and then completely bonding the veneer is used. Because the method is adopted, it is possible to store the temporarily bonded product in stock and then use the complete bonding method as necessary, so that the entire manufacturing process must be completed in a short time and the conventional method In comparison, it is possible to improve work efficiency.

Further, as a result of the experiment of the present inventor, it was found that when a veneer was attached to a nonwoven fabric using a heat-sensitive adhesive, a flexible product could be obtained.
ADVANTAGE OF THE INVENTION According to this invention, it is possible to obtain the veneer sheet product with high product value which is hard to break.

[Brief description of the drawings]

FIG. 1 is a process chart for explaining a method for manufacturing a veneer sheet product of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Nonwoven fabric 2 Adhesive layer 3 Veneer 4 Veneer sheet product

Claims (3)

[Claims] An adhesive layer (2) made of a heat-sensitive adhesive is formed on the front and back surfaces of a nonwoven fabric (1), and a veneer (3) is attached to each of the adhesive layers (2). The nonwoven fabric (1) and the veneer (3) are temporarily bonded, and then the veneer (3) temporarily bonded to the nonwoven fabric (1)
A method for producing a veneer sheet product, wherein the veneer sheet is produced by applying heat and pressure to the veneer sheet. 2. A non-woven fabric (1) having an adhesive layer made of a heat-sensitive adhesive on its front and back surfaces, a veneer (3) is attached to each of said adhesive layers (2), and said non-woven fabric (1) and a veneer (3) are attached. ) And then temporarily bonded to the nonwoven fabric (1).
A method for producing a veneer sheet product, wherein the veneer sheet is produced by applying heat and pressure to the veneer sheet. 3. A nonwoven fabric (1) and an adhesive layer (2) made of a heat-sensitive adhesive formed on the front and back surfaces of the nonwoven fabric (1).
And a veneer plate (3) bonded to each of the bonding layers (2)
And a veneer sheet product comprising: