WO1983004216A1

WO1983004216A1 - Woody board

Info

Publication number: WO1983004216A1
Application number: PCT/JP1982/000195
Authority: WO
Inventors: Yasuichi Yamamoto; Yoshihisa Katayama
Original assignee: Eidai Co., Ltd.
Priority date: 1982-05-25
Filing date: 1982-05-25
Publication date: 1983-12-08
Also published as: GB2137529A; GB2137529B; GB8327806D0

Abstract

A woody board having low moisture- and gas-absorbing properties and having good abrasion resistance, which is particularly suited as inner walls of goods-carrying vessels or apparatuses such as inner walls of containers, flooring of trucks, etc. This woody board comprises a wood base having been treated to protect it from insects and having on the surface and the side thereof a first synthetic resin coating layer and, on this first layer, a second synthetic resin coating layer containing hardwearing inorganic perticles which make the surface of the second layer coarse. This woody board has low moisture- and gas-absorbing properties, has a hardwearing surface, and shows a large friction with goods placed thereon.

Description

Details

Title of invention

Wood-based board technology

The present invention relates to a wood-based board having various features not found in conventional wood-based boards, that is, having low water absorption / inhalation properties, and having features such as abrasion resistance. In particular, the present invention relates to a wooden board suitable for use as an inner wall of a cargo transporter or a device, such as an interior panel of a container and a floor panel of a truck.

In this specification, the term “wood” means wood or a material mainly composed of wood. Background art

It is common practice to use wood-based materials as floorboards or wallboards for various containers at sea or on land, but these wood-based materials have the following disadvantages. . First, because it is water-absorbent (permeable) and air-inhalable, the container that uses it contains liquids that contain perilla, such as raw eggs, raw sake, oils and fats, and seafood. When carrying luggage that frequently leaks or luggage that has a strong odor such as animal skin, conventional wood-based materials absorb the liquid or odor that leaks from the luggage, and as a result, The odor remains in the container, and the odor is transferred to the next loaded luggage, There was a drawback of reducing or eliminating the value of the product. This disadvantage could not be completely eliminated even if the inside of the container was cleaned and deodorized. Second, conventional wood-based planks do not have abrasion resistance and are heavily worn by sliding contact with luggage.As a result, maintenance * inspections in the container must be performed frequently. There were drawbacks. Third, when compared with synthetic resin boards, conventional wood-based boards have a large frictional force (hereinafter referred to as frictional resistance) generated between them and cargo, In some cases, it is not enough to prevent the load from being dislodged in the container, and there is a drawback that the frictional resistance is greatly reduced, especially if water adheres to the surface of the wooden board. .

The present invention has been made to eliminate the above disadvantages. However, the use of the wood-based lumber of the present invention is not limited to the container interior board, but can be used in any place where the characteristics are required. Disclosure of the invention

In order to eliminate the above-mentioned drawbacks, at least one of the wood-based base materials (hereinafter referred to as “substrates”) of the wood-based base material of the present invention (hereinafter referred to as “substrate”) is used to eliminate the aforementioned drawbacks. A first synthetic resin paint layer (including a synthetic resin paint film; the same applies hereinafter) is formed on the surface and side surfaces, and at least a surface of the first synthetic resin paint layer has abrasion-resistant inorganic particles. And the surface is made rough by these inorganic particles. The second synthetic resin paint layer is formed. It is desirable to form the first synthetic resin paint layer also on the back surface of the substrate, but it is preferable to apply an adhesive to the entire back surface of the plate material of the present invention and stick it to a predetermined place. In such a case, it is not always necessary to form the first synthetic resin paint layer on the back surface because the adhesive acts similarly to the first synthetic resin paint layer.

As described above, in the present invention, at least the surface ′ and side surfaces of the substrate are covered with the first synthetic resin paint layer, and the first synthetic resin paint layer It prevents odors and odors from being absorbed by the board, so that no odor remains on the board, and therefore, it can be effectively used as an interior board for containers and the like. I can do it. However, since the first synthetic resin paint layer is formed not only on the surface of the plate material but also on the side surfaces, the liquid that has entered between the steel material and the material, that is, is washed. There is no danger that liquid that tends to remain will permeate the substrate. Furthermore, since the surface and the side surface of the substrate are covered with the first synthetic resin paint layer, there is an effect that cleaning can be easily performed.

In addition, since inorganic particles having abrasion resistance are mixed in the second synthetic resin paint layer, the abrasion resistance is large. 2 Since the surface of the synthetic resin paint layer has a rough surface with irregularities, it has a large frictional resistance, and when used as a container interior plate, Effectively prevent luggage from slipping Rukoto can.

Since the substrate is treated with insects, it is not eroded by insects. In addition, although the board material treated with insect repellent often generates toxic gas, in the present invention, since the substrate is covered with the first synthetic resin paint layer, toxic gas is generated. Is held down. BRIEF DESCRIPTION OF THE FIGURES

FIG. 1 is a longitudinal sectional view showing a first embodiment of the present invention, and FIG. 2 is a longitudinal sectional view showing the second embodiment.

BEST MODE FOR CARRYING OUT THE INVENTION

First embodiment

In FIG. 1, as a substrate 1 having an arbitrary shape, a wood-based material such as a plywood, a sawn timber, a particle board, a veneer laminate, or the like is used. The substrate 1 is subjected to insect repellent treatment using a known insect repellent. Insect process, the surface la of the board 1, but but it may also be impregnated with insect repellents from the back lb or side lc, plywood, Nono ⁰ - In Te I 'click Le Beau de like, when manufacturing the same An insect repellent may be added to the adhesive used at this time.

On the surface la and side surface lc of this substrate 1, one or more layers

The first synthetic resin paint layer 2 above is formed. This

(1) The raw material paint for the synthetic resin paint layer 2 is a highly permeable resin such as melamine resin, urine resin, phenol resin, urethane resin, and unsaturated polyester. Resin, acrylic resin, etc.

-BUREAU

O PI

, U ^P0 Paints or modified resin paints thereof are used. The paint may be mixed with fine flake pigments. As the fine flake pigment, mica, glass flake, aluminum flake, soft polymer film, and the like are used. When the paint is applied to the surface la and the side surface lc of the substrate 1, the pigment in the form of fine flakes sticks to the substrate 1 to form a paint intrusion prevention film, and the paint does not penetrate the substrate 1 more than necessary. It has the effect of preventing In particular, when the substrate 1 is a plywood, it acts to block the wood conduit and prevent paint from entering the substrate 1 therefrom. The size of the pigment in the form of fine flakes may be a size capable of performing the above-described functions, but also takes into consideration other factors such as ease of application work and the finish of the first synthetic resin paint layer 2 and the flatness. Is determined. In general, it is desirable that the substrate has a plane shape of about 10 ^ to 1 lin angle and a thickness of about several ^ to several 10 degrees. The fine flake pigment is mixed into the paint in an amount of 10% by weight or less (hereinafter simply referred to as%) based on the solid content of the paint. In addition to the fine flake pigment, short fibers having a length of about 500 to 5 »may be mixed into the paint. The short fibers are meshed with the pigment itself or the fine flaky pigment to form a net.The short fibers cover large depressions that cannot be covered by the fine flaky pigment alone, and the net catches the fine flaky pigment. Since they assist in forming a paint intrusion prevention film, paint intrusion can be more effectively prevented. Short fibers include rock wool, asbestos, glass fibers, and Tetrone®. Synthetic fabrics such as Ion-Nylon and Vinylon-Acrisole are used. The application of the paint, that is, the formation of the first synthetic resin coating layer 2 is performed by a known coating means such as a roll coater, a floor coater, spray coating or brushing. Is performed. The amount of application is preferably an arbitrary force of about ^{40 to} ²⁰⁰ / degree. It is desirable to form the first synthetic resin paint layer 2 also on the back surface lb of the substrate 1.However, when an adhesive is applied to the back surface lb and is adhered to a predetermined place, the first adhesive is used. Since it has a function similar to that of the synthetic resin paint layer 2, the first synthetic resin paint layer 2 is not necessarily formed on the back surface lb.

The surface 2a of the first synthetic resin paint layer 2 is mixed with abrasion-resistant inorganic particles 4, and the surface 3a of the first synthetic resin coating layer 2 is formed as a rough surface with irregularities. One or two or more second synthetic resin paint layers 3 are formed. As the inorganic particles 4, aluminum, silicon carbide, dolomite, and the like are suitable, and the particle diameter is desirably about 10 to about 100. The mixing amount of the inorganic particles 4 is about 10 to 200% based on the solid content of the paint, but is not limited to this. As the raw material for the second synthetic resin paint layer 3, the same as the raw material for the first synthetic resin paint layer 2 is used. In forming the second synthetic resin paint layer 3, a raw material paint mixed with inorganic particles 4 may be applied to the surface 2 a, and the inorganic paint may be applied to the surface 2 a of the first synthetic resin paint layer 2. After spraying 4, apply paint on it You can do it. This paint, the desired amount (e.g. 401 '20 09) are coated fabric by Ri surface ² a to any known coating means. A known fungicide may be added to the paint.

Second embodiment

FIG. 2 shows a second embodiment. In this embodiment, the same members as those in the first embodiment are denoted by the same reference numerals.

The ^third synthetic resin coating layer 5 is formed on the surface ³ a of the second synthetic resin coating layer 3. The ^third synthetic resin paint layer ⁵ has a function of slightly smoothing the surface 3a of the second synthetic resin paint layer 3, and the inorganic particles mixed in the second synthetic resin paint layer 3 Inorganic particles (not shown) having a particle size smaller than the particle size of ⁴ , for example, about 5 to 30 ^ are mixed. However, it is not necessary to mix inorganic particles.

Next, a production example of the material of the present invention will be described.

Production Example 1

100 parts by weight (hereinafter simply referred to as "parts") of urethane emulsion paint (solid content 50%) were mixed with 10 parts of 2 (mica having a square planar shape and a thickness of 2μ). It was applied on the surface and sides of a plywood with a thickness of about 30 in an amount of about 509 / approximately with a roll coater or floor coater, and sprayed on the sides. Then, apply 100 parts of the same urethane emulsion paint as above to a particle size of 30 to

No. 1 mixed with 10 parts of 80 aluminum particles

OMPI Lord Only on the surface of the synthetic resin paint layer.

After applying 1209 m, it was dried at 80 "Ό for 7 minutes to obtain a desired plate material.

Production Example 2

After forming the first synthetic resin coating layer by the same process as in Production Example 1, urethane-based enamel coating (solid content)

A mixture of 100 parts and 10 parts of aluminum particles having a particle size force of 50 to 90 was applied only to the surface of the first synthetic resin paint layer.

1009 τη ^{2 is} applied, and then 100 parts of a urethane-based emafresion paint (solid content 4S%) mixed with 5 parts of mono-lumina particles having a particle size of 5-29 are mixed. The surface was applied with 60 on the surface of the second synthetic resin paint layer, and then dried at 80'G for S to obtain a desired material. Industrial applicability

As described above, the material according to the present invention has not been widely used as a container panel, a truck floor, etc. o

Claims

The scope of the claims

1. A first synthetic resin paint layer is formed on at least the surface and side surfaces of the insect-treated wooden substrate, and at least the surface of the first synthetic resin paint layer has abrasion resistance. A wood-based board on which a second synthetic resin coating layer is formed in which inorganic particles are mixed and the surface of the inorganic particles is roughened with irregularities.

2. The wood-based board according to claim 1, wherein the wood-based board is a plywood, a sawn timber, a particle pond or a veneer laminate. .

3. The wood-based board according to claim 1, wherein the inorganic particles are alumina, silicon carbide, or dolomite having a particle size of 10 to 1000.

4. The wood-based board according to claim 1, wherein the first synthetic resin paint layer is mixed with minute thin pigments such as mica, soft polymer film, and glass flakes.

5. A third synthetic resin paint layer is formed on the surface of the second synthetic resin paint layer to make it slightly smoother, and is mixed into the third synthetic resin paint layer and the second synthetic resin paint layer. 2. The wood-based lumber according to claim 1, wherein abrasion-resistant inorganic particles having a particle size smaller than the particle size of the inorganic particles are mixed.

6. The wood-based lumber according to claim 1, wherein at least one of the first and second synthetic resin paint layers has a two-layer structure.