JPS60210406A - Molding method of ligneous floor material - Google Patents

Abstract

PURPOSE:To make a contact feeling favorable, and improve wear-resistant and water- resisting properties, resistance to slide and moisture absorption and heat insulating properties, by a method wherein cellulose series dry pulverized aggregate and crushed cork flour at a specific ratio are mixed with each other and made into a resin-molded article in a platelike state. CONSTITUTION:Aggregate 1a and cork flour 1b are mixed with 20-70% resin for molding. The cork powder 1b is aggregate flour whose particle diameter is comparatively large and the aggregate 1a is made into cellulose series dry pulverized flour which is in 100-150 meshes. When there is necessity improving molding properties and a mixing state of the aggregate, a cellulose series material is dried less than air dry water content, damage of a fiber system part is induced, impregnation of urea series resinous solution and drying are performed, the resin is cured further through heating, drying and crushing treatment at the temperature of 100-200 deg.C, dried up to 3-5% and crushed into a fine particle diameter, a PH value of which is made into 6-7. As for this molded article, a fibrous part of wood flour is solidified with a resin material, surface slip properties becomes favorable, wear-resistant properties are improved through mixing of the cork flour, possesses moisture absorption properties and favorable soft feeling and heat insulating and water-resistant properties are improved.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to the provision of a wooden flooring material which has particularly good abrasion resistance, water resistance and corrosion resistance, and is also pleasant to the touch.

Various improvements have been attempted in the past for this type of flooring material. However, in general, when the walking contact surface is made to have a good texture, it has difficulty in abrasion resistance and water resistance, and it is difficult to use it for flooring materials that emphasize water and abrasion resistance. This makes it difficult to feel the touch when touching the product, and the surface becomes wet due to sweating, etc., or slips and falls are more likely to occur.
Each has advantages and disadvantages.

In addition, with conventional flooring materials, it is difficult to provide a flooring material that provides good contact feel and warmth when walking, as well as abrasion resistance and water resistance, as it is particularly costly and difficult to install. This has been considered a bottleneck in terms of cost.

The abrasion-resistant wooden flooring material of the present invention has been disclosed for the purpose of avoiding the disadvantages of conventional flooring materials that are hard, and is made by adding cellulose-based fine powder such as wood powder to the usual flooring material. By containing a large amount of cork powder, it has a good contact feel, has excellent abrasion resistance and water resistance, and has moderate slip resistance, moderate moisture absorption, and cold contact due to the heat insulation properties of the contact surface. This avoids the sensibility of the product, and also enables mass production at low cost.

The abrasion-resistant wooden flooring material according to the present invention is particularly designed to achieve effective visual properties.
Based on the point that a plate-shaped resin molded product was made by mixing 20 to 70% of 0 mesh dry cellulose-based fine powder aggregate and crushed cork powder, the following specific examples and these examples were used. Considerable accompanying design changes were made.

Hereinafter, a typical embodiment of the wooden flooring material according to the present invention will be described with reference to the accompanying drawings. l is a molded wooden flooring material, and cork powder is mixed with wood flour, rice husk flour, etc. by various methods described later. This product is molded with 20 to 70% of the wood, and is used as a flooring material to be installed on the floor surface.In some cases, it is installed directly on two sides of the slab, and in other cases, it is installed through joists 3, etc. A considerable number of uses are planned.

In addition, when a veneer or other decorative material 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 flooring material 1 by an appropriate method such as spraying with a gun or brushing. , and other considerable cosmetic treatments were planned.

The floor material 1 provided and prepared in this way has aggregate 1a described below and cork powder 1b, and has approximately 2
It is mixed and molded into a material such as vinyl chloride resin within a range of 0 to 70%.

Cork powder 1b is made by heating and compressing the bark material of cork oak or Abe maki and then crushing it to form aggregate powder with a relatively large particle size, and aggregate 1a is made of fine aggregate powder with a particle size of 100 to 150 mesh. Moreover, it is a unique wood powder, rice husk powder, etc. with a water content of 3 to 5%.

In addition, when forming the wooden flooring l, there are usually two methods: using calender rolls, cutting and rolling a molded product extruded into a tube shape, or creating it with an injection mold, or other appropriate methods. In addition, it is planned that the plate-shaped molded product will be pressurized again using a hot press machine, etc., and basically foamed flooring and non-foamed flooring will be used for each purpose. It is molded and prepared to suit.

However, the unique aggregate 1a and cork powder mentioned above! The use of B and b is limited to improve compatibility with the resin material, improve molding characteristics, and impart unique properties to molded products.゛In other words, when mixing aggregate powder and cork powder, the molding resin material powder, aggregate powder, and cork powder become fully compatible with each other, causing nests or air bubbles to form on the surrounding surface of the aggregate powder, etc. during molding. This product is said to have no surface roughness, and to reduce extrusion resistance during molding or rolling resistance to the roll surface, making it possible to provide a flooring material with relatively good surface properties. .

Furthermore, in cases where it is necessary to improve the molding characteristics and mixing condition of the aggregate 1a, the aggregate 1a itself can be molded using the following method.

That is, first, crushed chips, bulbs, rice husks, and other appropriate cellulose-based materials are dried to below their air-dried moisture content, and by limiting the moisture content as much as possible, the destruction of the fibrous tissue portion is induced, A urea-based resin solution is applied and impregnated onto the tissue area where such destruction has occurred, and left for 20 to 30 minutes to ensure sufficient infiltration of the resin solution and drying. In the impregnation of
5, and in the heating, drying, and crushing treatment, the resin is cured and dried to a temperature of 3 to 51A.
The powder is pulverized to a fine particle size of 20 to 150 mesh, and the pH value is approximately neutral, ranging from 6 to 7.

When using the aggregate powder thus provided, it is said to have better compatibility with the resin material than the aggregate 1a, and also has good lubricity during molding, and it is said that it has better compatibility with the resin material than the aggregate 1a, and also has good lubricity during molding. This prevents the generation of harmful gases.

In other words, the fibers of the powder itself are hardened by the hardened resin material, and the surface sliding properties are said to be particularly good, so it is said that the powder blends perfectly with the resin material, and the mixed aggregate powder There are no voids or nests on the surrounding surface,
In addition, there is little frictional resistance against sliding contact with the molding machine cylinder surface and die hole surface, allowing smooth and reliable molding and minimizing wear and tear on these cylinder surfaces and the like.

In addition, roughness on the surface of the molded flooring material is guaranteed by imparting such sliding properties and suppressing the generation of water vapor and wood acid gas.

In particular, the generation of wood acid gas has caused problems such as roughening of the floor material surface as well as oxidative corrosion of the equipment itself such as the molding machine cylinder and gou, so it is difficult to effectively prevent wood acid gas from occurring. This makes it possible to form sheets using the various methods described above.

In addition, the cork powder 1b mentioned above has moisture resistance and elasticity by itself, and has good surface smoothness, so it has better compatibility with the resin material than the aggregate 1a. is,
Extrusion resistance or injection resistance during resin molding is alleviated.

In addition, with the addition of cork powder 1b, the abrasion resistance of the molded flooring material is significantly improved, the feel of the flooring material is improved, and the insulation properties and water resistance are improved. This has been significantly recognized.

The method for molding wood flooring according to the present invention, due to its characteristic structure described above, has a variety of problems during molding, especially wear and tear of the molding machine itself, enlargement of equipment, extrusion or injection molded products. This effectively avoids problems such as deterioration in quality and provides the following properties to the flooring material produced and provided. In other words, (1) It is said to have good abrasion resistance, and there is almost no wear on the surface even after years of use, and it has appropriate hardness and elasticity, so it does not cause scratches on the surface. etc. were effectively prevented.

(2) There is no shrinkage distortion during or after molding due to mixed aggregate, etc., and there is no expansion, shrinkage, or sag, cracking, etc. due to thermal changes, and accurate tensioning conditions can be maintained over time. It was made possible.

(3) Mixed aggregate provides appropriate contact resistance and moisture to the surface of the flooring material, giving a moist walking and contact sensation to the surface of the flooring material, ′, and sweat on the contact surface. This effectively eliminates the sticky feeling caused by such substances and the dry feeling that occurs in cold weather, thereby effectively avoiding the possibility of slip accidents.

(Since the zero-containing aggregate 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 and to apply the decorative material appropriately.

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

(6) The mixed aggregate enables construction and installation similar to those for ordinary wood, such as sawing and nailing.

(?) Good water resistance and decay resistance make it especially possible to use it over time.

The method for forming a wooden flooring material according to the present invention has the characteristic structure and effects described above, and is particularly meaningful as a flooring material for creating a comfortable living space, and is inexpensive in terms of forming. was made possible.

[Brief explanation of drawings]

Figure 1 is a sectional view of the flooring material according to the present invention, Figures 2 and 3.
The figure is a sectional view showing another embodiment, and FIG. 4 is an enlarged sectional view of the flooring 1. In the figure, 1...floor material, 2...slab, 3...joist, 4...decorative material, la...aggregate, 1b...cork powder. Patent applicant Sadao Nishihori Patent attorney Minoru Kuwahara 1 Figure l Figure 2

Claims (3)

[Claims] (1) A method for forming a wooden flooring material, which comprises mixing 100 to 150 meshes of dry fine cellulose aggregate and 20 to 70% of crushed cork powder to form a plate-shaped resin molding. (2) Drying the aggregate to crushed chips, bulbs, rice husks, or other appropriate cellulosic materials such that the moisture content of the materials is within 15% to induce collapse of the fibrous structure. At the same time, the processed material is impregnated with a urea-based resin liquid, and then the processed material is heated to 100°C.
Dry and crush in a temperature range of ~250℃, pH 6 ~
A method for forming wooden flooring according to claim 1, characterized in that a neutralized finely hardened aggregate with a pH of 7 is used. (3) The method for forming a wooden flooring material according to claim 1, characterized in that the water content in the aggregate is 5% or less.