JPH05309779A - Wood substitute product and production thereof - Google Patents

Abstract

PURPOSE:To enhance the strength of a wood substitute product to expand the adaptation range thereof and to conserve wood resources by fixing a mixture of raw pine resin and a powder to reinforcing cloth by the adhesiveness of raw pine resin and molding this reinforcing cloth into a predetermined shape to constitute the wood substitute product. CONSTITUTION:A wood substitute product is adapted as a palette material or a building material in place of wood. In this case, a mixture of raw pine resin and a powder is fixed to reinforcing cloth by the adhesivenss of raw pine resin and this reinforcing material is molded into a predetermined shape to constitute the wood substitute product. As the powder, a grinding powder is used and, as the reinforcing cloth, a hemp fabric is used and the predetermined shape is set to a square pillar shape. At the time of production, the powder is dispersed in molten raw pine resin to prepare a dispersion which is, in turn, poured into a predetermined mold and the reinforcing cloth is laid on the surface of the dispersion. By this constitution, the strength of the wood substitute product is enhanced and the adaptation range thereof is expanded and wood resources are conserved.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wood substitute product suitable for use as a material for pallets, a building material or the like instead of wood, and a method for producing the same.

[0002]

2. Description of the Related Art Conventionally, wood has been widely used as a material for building pallets, a building material and the like. As is well known, this wood is obtained by cutting down various trees in the forest.

Recently, however, it has been reconfirmed that forests are very important for maintaining a good global environment. Therefore, logging various trees in the forest and destroying the forest in order to obtain timber poses a risk of further deteriorating the global environment.

Therefore, in order to protect the global environment, it is necessary to use other materials such as plastic and metal in place of wood. However, changing the material from wood to plastic etc. in terms of price and texture unique to wood is
It's not easy.

[0005]

Therefore, as a result of various studies on the development of wood substitute products, the present inventor has come to the idea of using raw pine resin obtained from trees belonging to the Pinaceae family. However, even if raw pine resin is directly molded into a plate or the like, the molded product can sufficiently express the texture peculiar to wood, but has a sticky surface and low strength,
It could not be used as a substitute product for wood.

Therefore, according to the present invention, powder having a relatively small particle size is added to raw pine resin to reduce the stickiness of the raw pine resin, and the mixture is fixed to a reinforcing cloth to improve the strength. It is intended to provide a wood substitute product that can be used in the same manner as wood.

[0007]

That is, according to the present invention, a mixture of raw pine resin and powder is fixed to a reinforcing cloth by the adhesive property of the raw pine resin and molded into a predetermined shape. The present invention relates to a characteristic wood substitute product and a manufacturing method thereof.

The raw pine resin used in the present invention is one in which the surface of the trunk of a tree belonging to the Pinaceae family is scratched and the liquid leaching from the wound is collected. Raw pine resin is a transparent liquid at the time of collection, but it becomes viscous over time and eventually becomes a solid. Therefore,
Raw pine resin is generally stored as a solid.

In the present invention, this solid pine resin is used and heated to melt it. The heating temperature is 90
It is about 100 ℃. Then, powder is added to the melted raw pine resin. As the powder, a fine powder having a particle diameter of about 1 mm or less is suitable. For example, alumina, silicon carbide, boron carbide, iron oxide, chromium oxide, diamond, emery, spinel, garnet, hiuchi stone, etc. which are used as polishing powder are preferably used. The amount of powder added is
About 10 to 30 parts by weight is preferable with respect to 100 parts by weight of raw pine resin, and about 20 parts by weight is most preferable. As described above,
A dispersion is obtained in which the powder is dispersed in the molten raw pine resin.

This dispersion is poured into a predetermined mold. The predetermined mold is arbitrarily determined by the shape of the resulting wood substitute product. For example, when obtaining a plate-like wood substitute product, a mold having a rectangular recess is adopted. Then, after pouring the dispersion liquid into the mold, a reinforcing cloth is laid on the surface of the dispersion liquid or in the dispersion liquid. That is, it may be placed on the surface of the dispersion liquid and laid on the surface of the dispersion liquid, or may be placed on the surface of the dispersion liquid and then pressurized and laid on the surface of the dispersion liquid. A woven fabric, a knitted fabric, a non-woven fabric, or the like is used as the reinforcing fabric. Of these, natural linen and inexpensive hemp fabrics are preferable, especially with a thickness of 2 m.
Most preferably, hemp fabrics of the order of m are used. Then, after the reinforcing cloth is laid on the surface of the dispersion liquid or in the dispersion liquid, the dispersion liquid is further poured, and then the reinforcing cloth is laid. A desired shape is obtained by repeating the above steps. When the desired shape is obtained in the mold and then left to cool, the raw pine resin in the dispersion becomes solid. Raw pine resin gradually becomes viscous when cooled and adheres to the reinforcing cloth when it becomes solid. And the powder in the dispersion is also held by the raw pine resin. Therefore, the wood substitute product obtained as described above is configured such that the mixture of raw pine resin and powder is fixed to the reinforcing cloth by the adhesive property of the raw pine resin.

[0011]

Example Solid pine resin in a solid state was heated to 100 ° C. to be melted. Emery powder was added to the melted raw pine resin to obtain a dispersion liquid. The emery powder is 100% raw pine resin.
20 parts by weight was added to parts by weight. On the other hand, a mold having a rectangular recess was prepared. The recess of this mold has a depth of 3 cm and a width of 1
It was 5 cm and 100 cm in length. Then, a column having a height of 0.5 cm and a diameter of 1 cm was provided at both ends of the recess in the longitudinal direction. The above-mentioned dispersion liquid was poured into this mold. The amount of the dispersion liquid poured was such that the height of the dispersion liquid was about 1 mm. Then, a linen fabric having an apparent thickness of 2 mm was laid on the surface of the poured dispersion liquid. Since this mold was at room temperature, the poured dispersion liquid was immediately cooled and became very viscous. Then, the dispersion was poured again onto the linen fabric, and the linen fabric was laid on the linen fabric and pressed. Such an operation was repeated 25 times to fill the mold with the dispersion liquid and the like. Then, after several hours, the obtained molded product was taken out of the mold to obtain a wood substitute product.

The shape of the wood substitute product obtained by this example is shown in FIGS. 1 and 2. This wood replacement product
It can be suitably used as a material for a pallet (a table used when carrying goods). The recesses provided at both ends in the longitudinal direction are provided for hitting a nail or the like. Therefore, when a nail is struck in this recess, the nail head does not appear on the surface of the pallet, so that the transported object placed on the pallet is not damaged.

[0013]

As described above, since the wood substitute product according to the present invention contains raw pine resin as the main component, it can be obtained without cutting various trees in the forest. .. Therefore, the forest is rarely destroyed, and the global environment can be favorably maintained. Also, raw pine resin is the main component, but powder is added to this raw pine resin. Therefore, the stickiness peculiar to raw pine resin is reduced by this powder, and it has the effect of having the same texture and slippage as conventional wood. Further, since the reinforcing cloth is used in the wood substitute product according to the present invention, the strength is similar to the conventional wood. Therefore, the wood substitute product according to the present invention can be suitably used as a material for a pallet, a building material, or the like, instead of wood.

[Brief description of drawings]

FIG. 1 is a schematic plan view of a wood substitute product obtained by an example.

FIG. 2 is a schematic vertical sectional view of the wood substitute product of FIG.

Claims (9)

[Claims] 1. A wood substitute product characterized in that a mixture of raw pine resin and powder is fixed to a reinforcing cloth by the adhesive property of the raw pine resin and molded into a predetermined shape. 2. The wood substitute product according to claim 1, wherein the powder is an abrasive powder. 3. The wood substitute product according to claim 1, wherein the reinforcing cloth is a linen fabric. 4. The wood substitute product according to claim 1, wherein the predetermined shape is a square pole. 5. A wood substitute product characterized in that a dispersion liquid in which powder is dispersed in melted raw pine resin is poured into a predetermined mold, and then a reinforcing cloth is laid on the surface of the poured dispersion liquid. Production method. 6. A wood substitute product characterized by comprising pouring a dispersion liquid in which powder is dispersed in melted raw pine resin into a predetermined mold, and then laying a reinforcing cloth in the poured dispersion liquid. Production method. 7. The method for producing a wood substitute product according to claim 5, wherein the powder is abrasive powder. 8. The method for producing a wood substitute product according to claim 5, wherein the reinforcing cloth is a linen fabric. 9. The method for producing a wood substitute product according to claim 5, wherein the predetermined mold is a mold having a rectangular recess.