JPH0430322B2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention provides a lightweight wooden flooring material that has particularly good abrasion resistance, water resistance, and corrosion resistance, and is also comfortable to the touch. This is related.

[Prior Art and its Problems] Various improvements have been attempted in the past on this type of flooring material. However,
In general, when the walking contact surface is made to have a good texture, it has poor abrasion resistance and water resistance.
Flooring materials that place emphasis on wear resistance have their own advantages and disadvantages, as they have poor contact feel during use, and the surface tends to get wet due to perspiration, or slips and falls.

In addition, with regard to such conventional flooring materials, it is said that providing a flooring material that has both a good feeling of touch and warmth when walking, as well as abrasion and water resistance functions is particularly expensive, and is a bottleneck in terms of construction costs. It is something that

[Means for Solving the Problems] The wooden flooring material according to the present invention has been disclosed for the purpose of avoiding the disadvantages of the conventional flooring materials, and is a method of adding cellulose-based fines such as wood flour to the usual flooring material. By containing a large amount of powder and cork powder, it is lightweight and has a good contact feel.
Moreover, it has excellent abrasion and water resistance properties, as well as moderate slip resistance, moderate moisture absorption, and heat insulation properties on the contact surface, which avoids the feeling of cold to the touch.Moreover, it is possible to provide a lightweight product at a low cost. It is something.

In order to effectively achieve these various properties, the wooden flooring material according to the present invention is a molded resin board made of vinyl chloride, etc. The total amount of dry fine cellulose powder on the mesh sieve and crushed cork powder is 20
It was placed on a wooden flooring material containing ~70wt%.

[Example] Hereinafter, a typical example of the wooden flooring material according to the present invention will be described with reference to the attached drawings. 1 is a molded wooden flooring material, which is made of wood flour and rice husk powder by various methods described later. etc. and cork powder in a total amount of 20 to 70wt.
%, and is used as a flooring material to be installed on the floor surface, either directly on two sides of the slab, or through joists 3, etc., or in other equivalent ways. There is.

In addition, when a veneer or other decorative board 4 is laminated or adhered to the surface of the wooden flooring material 1, or a coating film is formed on the surface of the wooden flooring material 1 by an appropriate method such as gun blowing or brush painting, It has undergone other considerable cosmetic treatments.

The wooden flooring material 1 provided and prepared in this manner contains the cellulose-based dry fine powder 1a described below and the cork powder 1b, and is approximately 20 to 70 wt%.
It is mixed and molded into a material such as vinyl chloride resin within the range of .

Cork powder 1b is obtained by heat-compressing the bark material of cork oak or Abe maki and then crushing it to form a powder with a relatively large particle size, and cellulose-based dry fine powder 1a is obtained by heating and compressing the bark material of cork oak or Abe maki. It is a unique wood powder, rice husk powder, etc. that is finely divided and has a water content of 3 to 5 wt% or less on a mesh sieve.

In addition, in forming the wooden flooring material 1, it is customary to use calender rolls, to cut and expand a tube-shaped extruded product, or to create it by injecting and extruding it, or by any other appropriate method. In addition, there are cases where the plate-shaped molded product is pressurized again using a hot press machine, etc., and basically foamed flooring and non-foamed flooring are used depending on the purpose of use. It is prepared by molding.

However, the above-mentioned unique cellulose-based dry powder 1
Both a and cork powder 1b were used in a limited manner with the intention of improving compatibility with the resin material, improving molding characteristics, and imparting specific symptoms to the molded product.

In other words, when the cellulose-based dry fine powder and cork powder are mixed, the molding resin material and the cellulose-based dry fine powder and cork powder are sufficiently compatible with each other, and no "s" or air bubbles are formed on the surrounding surface of the cork powder etc. during molding. Furthermore, the surface roughness is reduced, and the extrusion resistance or rolling resistance to the roll surface during molding is reduced, making it possible to provide a flooring material with relatively good surface properties.

Furthermore, if it is necessary to improve the molding properties and mixing conditions of the cellulose-based dry fine powder 1a, the cellulose-based dry fine powder 1a itself can be molded and provided using the following method.

That is, first, crushed chips, pulp, rice husks, and other suitable cellulose-based materials are dried to below the air-dried moisture content, and by reducing the moisture content as much as possible, good crushability is achieved. After applying and impregnating with the system resin liquid, leave it for 20 to 30 minutes to achieve sufficient infiltration of the resin liquid and drying.Furthermore, in the heating, drying, and crushing treatment, the resin hardens and 3 to 5 wt. %, and crushing into fine particles under a 120-mesh sieve to above a 150-mesh sieve.

When using the cellulose-based dry fine powder thus provided, it is said to have better compatibility with the resin material than the above-mentioned cellulose-based dry fine powder 1a, and also has good lubricity during molding, and it is said that it has good lubricity during molding. The generation of harmful gases is prevented as much as possible.

In other words, the fibers of the powder itself are hardened by the respective hardened resin materials, and the surface sliding properties are said to be particularly good, so it is said that the mixture with the resin material is perfect, and the mixed cellulose-based There are no voids or ``s'' on the surface of the dried fine powder.
In addition, there is little frictional resistance against the molding machine cylinder surface and die hole surface, making molding smooth and reliable.
This reduces wear and tear on the cylinder surfaces, etc. as much as possible.

Furthermore, roughness on the surface of the molded flooring material is guaranteed by imparting such sliding properties and suppressing the generation of water vapor and acetic acid gas. especially,
The generation of acetic acid gas causes the problem of roughening of the flooring material surface as well as oxidative corrosion of the equipment itself such as the molding machine cylinder and die. Effective prevention of such acetic acid gas makes it possible to improve the quality of sheets produced by the various methods described above. This made molding possible.

In addition, the cork powder 1b mentioned above has moisture resistance and elasticity in itself, and has good surface smoothness, so it is better to use the cellulose-based dry fine powder 1a.
As described above, it is said to have good compatibility with the resin material, and the extrusion resistance or injection resistance during resin molding is alleviated.

In addition, with the incorporation of cork powder 1b, the abrasion resistance of the molded flooring material was significantly improved, and the feel of the flooring material was said to be good, and the insulation properties and water resistance were significantly improved. It is.

[Effects of the Invention] The wooden flooring material according to the present invention has a structure that is a feature described above, and does not have various problems when molding.
In particular, it effectively avoids problems such as wear and tear on the molding machine itself, enlargement of equipment, or deterioration in the quality of extrusion or injection molded products, and has the following characteristics. In other words, (1) It is said to have good abrasion resistance, with almost no wear on the surface even after years of use, and because it has appropriate hardness and elasticity, there is no possibility of scratches on the surface. was effectively prevented.

(2) There is no expansion and contraction distortion during or after molding due to mixed cork powder, etc., and there is no expansion, contraction, sagging, cracking, etc. due to thermal changes.
It has been made possible to maintain an accurate tensioned state over time.

(3) Mixed cork powder, etc. imparts appropriate contact resistance and moisture to the surface of the flooring material, resulting in a smooth walking and contact interval on the surface of the flooring material, and sweat etc. on the contact surface. The sticky feeling caused by
Eliminates the feeling of dryness during cold seasons, effectively avoiding the possibility of slip accidents.

(4) Since mixed cork powder, etc. is exposed on the surface, it is said that the adhesion of paint or adhesive is good, making it possible to create a good decorative printing surface, etc. and to apply the decorative material appropriately. And so.

(5) It has good heat insulation and sound insulation properties, and the exposed aggregate structure on the surface gives the flooring a warm texture and a wood-like texture.

(6) The addition of cork powder etc. made it possible to carry out construction and installation in the same way as with ordinary wood, such as sawing and nailing.

(7) Good water resistance and corrosion resistance properties make it especially possible to use it over time.

The wooden flooring material according to the present invention has the characteristic structure and effects described above, and is particularly meaningful as a flooring material that creates a comfortable living space.
It is also possible to provide it at a low price.

[Brief explanation of drawings]

FIG. 1 is a sectional view of a wooden flooring material 1 according to this invention.
FIG. 2 and FIG. 3 are sectional views showing other embodiments,
FIG. 4 is an enlarged sectional view of the wooden flooring material 1. FIG. In addition, in the figure 1...wood flooring material, 2...slab, 3...
... Joist, 4... Decorative material, 1a... Cellulose dry fine powder, 1b... Cork powder.

Claims (1)

[Claims] 1. A molded resin plate made of vinyl chloride, etc., which contains a total of 20 to 70 wt% of cellulose-based dry fine powder from the bottom of a 100-mesh sieve to a 150-mesh sieve and crushed cork powder. A wooden flooring material featuring: