KR20110065134A

KR20110065134A - Manufacturing method of synthetic wood using polypropylene

Info

Publication number: KR20110065134A
Application number: KR1020090122002A
Authority: KR
Inventors: 최영기
Original assignee: 최영기
Priority date: 2009-12-09
Filing date: 2009-12-09
Publication date: 2011-06-15

Abstract

The present invention relates to a method for producing a composite wood using polypropylene, more specifically, because the texture is soft, such as natural wood can be used in place of wood, superior in weight than conventional plastic or synthetic wood The present invention relates to a method for producing a composite wood using polypropylene, which is easy to construct, and has high durability by adding protein, starch, and natural rubber to the polymer polypropylene and wood.

The present invention comprises a mixing step of mixing 40 to 60% by weight of polypropylene, 20 to 40% by weight of fiber wood, 6 to 8% by weight of natural rubber, 7 to 9% by weight of starch powder, 4 to 6% by weight of protein; A pelletization step of forming the pellets in a pellet state by heating / pressurizing the mixture which has undergone the mixing step at a temperature of 100 to 500 ° C. for 5 to 15 minutes; The pelletized step is characterized by consisting of a product completion step of completing the composite wood using a mold formed with a pattern or shape inside the mixture.

Description

MANUFACTURING METHOD OF SYNTHETIC WOOD USING POLYPROPYLENE}

Currently, timber is used not only in the construction industry but also in various facilities such as leisure, sports, and landscaping, as well as in the flooring of trucks and containers. It is pointed out as a cause of environmental destruction while damaging the natural forest. Therefore, plastic is used as a substitute for wood, but the texture of the plastic itself is limited to be used as a substitute for wood, and these plastics have almost no decomposability, and thus their use is gradually being reduced.

Recently developed to solve these problems is artificial wood, such artificial wood is usually produced by kneading and extruding a synthetic resin such as polyethylene, polyvinyl chloride, polypropylene, polyester and the like filling materials such as wood powder, inorganic powder, etc. Are manufactured.

However, conventional synthetic wood not only causes environmental pollution by using adhesives or various harmful substances in the process of adding or coloring wood, but also weakens the strength of adhesives and resins, resulting in product separation, cracking, warping, and decay.

In addition, the most recently spotlighted synthetic wood has a problem that the natural wood texture is different because it does not overcome the warpage phenomenon due to the high temperature phenomenon, the appearance is not smooth and rough.

The present invention was devised to solve the above problems, and an object of the present invention is to make the texture of the composite wood as soft as natural wood, and to add the protein, starch, natural rubber which is a natural component to the polymer polypropylene and wood. It is to provide a composite wood using a polypropylene to lower the durability, as well as to improve the workability by improving the light weight than conventional synthetic wood.

The present invention production method for achieving the above object, 40 to 60% by weight of polypropylene, 20 to 40% by weight of fiber wood, 6 to 8% by weight of natural rubber, 7 to 9% by weight of starch powder, 4 to protein A mixing step of mixing 6% by weight; A pelletization step of forming the pellets in a pellet state by heating / pressurizing the mixture which has undergone the mixing step at a temperature of 100 to 500 ° C. for 5 to 15 minutes; The pelletized step consists of a product completion step of completing the composite wood using a mold formed with a pattern or shape inside.

As described above, according to the present invention, the texture is as soft as natural wood can be used in place of natural wood, polymer polypropylene and natural wood, protein, starch, natural rubber to lower the durability, as well as conventional It is lighter than synthetic wood, which improves workability, and can be used for various purposes as well as materials of buildings.

Hereinafter, with reference to the accompanying drawings will be described in detail a method for producing a composite wood using the polypropylene of the present invention.

1 is a block diagram showing a method for producing a composite wood using polypropylene according to the present invention.

As shown in FIG. 1, the method for preparing a composite wood using polypropylene according to the present invention includes a mixing step, a pelletization step, and a product completion step.

In the mixing step, 40 to 60% by weight of polypropylene, a natural polymer material, 30% by weight of fibrous wood, 6 to 8% by weight of natural rubber, 7 to 9% by weight of starch powder, and 4 to 6% by weight of protein. To dry.

Here, when the synthetic wood is manufactured as a final finished product by mixing the protein, the finish surface is smoothed, and the weight of the synthetic wood is lighter than before.

Then, the mixture passed through the mixing step is heated to a pressure of 5 to 15 minutes at a temperature of 100 ~ 150 ℃ to form a pellet.

At this time, the pellet mixture is in a state of excellent plasticity.

In addition, when the pigment is mixed in the mixture of pellets, it should not exceed 3 ~ 5% of the product yield to achieve stable color, and the surfactant contained in the pigment should not exceed 4 ~ 6% of the yield. It is preferable to exceed this range, and the surface tension is increased, resulting in a weakening of the adhesive strength.

Thereafter, the composite formed in the pellet state using a mold formed with a pattern or a shape inside to complete the composite wood.

Here, when heating the mixture in the pellet state, it is preferable to maintain the proper temperature according to the use of the product, in the case of the material such as building interior and exterior materials, handrail materials, flooring materials, so as to maintain a temperature of 110 ~ 280 ℃ In addition, by maintaining the temperature of 280 ~ 400 ℃ in the case of parts materials in ships, automobiles, aircrafts to prevent the color of the pigment is changed or the change of wood is intensified.

As the type of the mold, a compression mold using a press machine and an extrusion mold using an extruder are used.

The press crimping die is used to take out a single part having a certain shape such as a tile, and the extrusion die is used to produce a long material continuous in the longitudinal direction by an extruder.

Synthetic wood produced by the manufacturing method as described above can be used in place of wood because its texture is soft like wood, and can eliminate the hard feeling of conventional plastic, as well as lighter than conventional synthetic wood This has the advantage of easy construction work.

In addition, by adding high-molecular polypropylene and wood with natural components such as protein, starch, and natural rubber, the durability is strong, and the workability is improved, and the generation of toxic gas is reduced during combustion. have.

Although the present invention has been described in detail above, those skilled in the art will appreciate that various modifications can be made without departing from the scope of the present invention. Therefore, the scope of the present invention should not be limited to the above-described embodiments, but should be determined not only by the patent registration scope described later but by those equivalent to the claims.

1 is a block diagram showing a method for producing a composite wood using a polypropylene according to the present invention.

Claims

40 to 60% by weight of polypropylene, 20 to 40% by weight of fibrous wood, 6 to 8% by weight of natural rubber, 7 to 9% by weight of starch powder, and 4 to 6% by weight of mixing protein;

A pelletization step of forming the pellets in a pellet state by heating / pressurizing the mixture which has undergone the mixing step at a temperature of 100 to 500 ° C. for 5 to 15 minutes;

The method of producing a composite wood composite using a polypropylene, characterized in that the product is made of a product completion step of completing the composite wood using a mold having a pattern or shape formed inside the pelletized step.