CN1887540A - Film coating plywood for bottom plate of container and its production process - Google Patents

Abstract

The film coating plywood for bottom plate of container consists of laminated and pressed single plates and has soaked coating paper on its one or two surfaces. Its production process includes the following steps: laminating and gluing dry single plates painted with phenolic resin as adhesive to certain thickness, polishing, sawing edges, repairing to form the base material, adhering soaked coating paper on its one or two surfaces, milling edges and sealing edges. The present invention has the features of high impact strength, high wear resistance, and high fouling resistance, and may be used directly without further coating.

Description

Film-coated plywood for container floor and its production process

Technical field

The invention relates to a plywood and its production process, in particular to a film-coated plywood for container bottom plates and its production process.

Background technique

The plywood used for the bottom plate of ordinary containers is bonded with bamboo, wood and other fiber materials through phenolic resin, arranged vertically, horizontally and vertically according to the fiber method, and produced by pre-pressing, hot-pressing, sanding, sawing and milling. become. During production, the requirements for the surface and bottom veneers are relatively high, requiring the whole width, no paneling, no digging, no holes, no dead joints, no decay and no pollution, so a large amount of high-quality wood needs to be consumed. In addition, this kind of plywood has poor impact resistance, wear resistance and pollution resistance, and users need to finish the surface of the plywood when using it.

Contents of the invention

The object of the present invention is to develop a kind of film-coated plywood for container floor and its production process.

The invention aims to solve the problems that the existing plywood used for the bottom plate of the container has poor impact resistance, wear resistance and pollution resistance, the surface of the plywood needs to be painted, and many high-quality woods are needed in production.

The film-coated plywood for the bottom plate of the container according to the present invention is formed by laminating and laminating veneers, and one or both sides of the plywood are coated with impregnated film paper. The impregnated film paper is impregnated with phenolic resin or melamine formaldehyde resin, and then dried properly, or added aluminum oxide powder in phenolic resin or melamine formaldehyde resin, then impregnated and dried properly, or Paper that is impregnated with phenolic resin or melamine formaldehyde resin and then sprayed with aluminum oxide powder on properly dried paper. The production process of film-coated plywood for container bottom plate according to the present invention: use phenolic resin for dry veneers of equal or unequal thickness as adhesive to glue and assemble the blank, at a hot pressing temperature of 130°C-180°C, 0.8- Under the hot pressing pressure of 1.6Mpa, after 30-40 minutes of hot pressing time, the glued product will be used as the substrate after sanding, sawing and repairing. The thickness of the substrate after sanding should be 28 ±0.6mm, and then paste the impregnated film paper on one or both sides of the substrate, and then apply it for 5-10 minutes under the condition of hot pressing temperature of 130°C-180°C and hot pressing pressure of 0.8-1.6Mpa. And then carry out edge milling according to requirements, and use waterproof paint similar to or the same color as the coated paper to seal the edge of the plywood, and finally obtain the coated plywood for the container bottom plate.

The invention has the advantages of good impact resistance, abrasion resistance and pollution resistance, and the user does not need to carry out finishing treatment on the surface of the plywood during use.

Description of drawings

Fig. 1 is a schematic structural view of a single-sided coating of the present invention.

Fig. 2 is a schematic structural view of the double-sided coating of the present invention.

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

As shown in FIG. 1 , the film-coated plywood for the bottom plate of the container according to the present invention is formed by laminating and laminating veneers, and an impregnated film paper 1 is covered on one side of the plywood. The impregnated film paper 1 is the paper that is properly dried after being impregnated with phenolic resin or melamine formaldehyde resin.

The impregnated adhesive film paper 1 can also be the paper that has added Al2O3 powder in phenolic resin or melamine formaldehyde resin, and is properly dried after impregnation.

The impregnated adhesive film paper 1 can also be the paper that is sprayed with Al2O3 powder on the paper that is properly dried after being impregnated with phenolic resin or melamine formaldehyde resin.

The production process of the film-coated plywood for the container bottom plate according to the present invention is as follows: using phenolic resin for dry veneers of equal or unequal thickness as an adhesive to glue and assemble the blanks, at a hot-pressing temperature of 130°C-180°C, 0.8 Under the hot pressing pressure of -1.6Mpa, after 30-40 minutes of hot pressing time, the glued product will be used as the base material after sanding, sawing, and repairing. The thickness of the base material after sanding should be 28±0.6mm, and then paste the impregnated film paper on one side of the substrate 2, and then apply it for 5-10 minutes under the condition of hot pressing temperature of 130°C-180°C and hot pressing pressure of 0.8-1.6Mpa, Then edge milling is carried out according to the requirements, and the plywood is edge-sealed with a waterproof paint similar to or the same color as the coated paper, and finally the coated plywood for the container bottom plate is obtained.

As shown in FIG. 2 , the film-coated plywood for the container floor according to the present invention is formed by laminating and laminating veneers, and the two sides of the plywood are coated with impregnated film paper 1 and impregnated film paper 3 . The impregnated film paper 1 and the impregnated film paper 3 are papers that are properly dried after being impregnated with phenolic resin or melamine formaldehyde resin.

The impregnated adhesive film paper 1 and the impregnated adhesive film paper 3 can also be the papers that have added aluminum oxide powder in phenolic resin or melamine formaldehyde resin, and are properly dried after impregnated.

The impregnated adhesive film paper 1 and the impregnated adhesive film paper 3 can also be the paper that is sprayed with Al2O3 powder on the paper that is properly dried after being impregnated with phenolic resin or melamine formaldehyde resin.

The production process of the film-coated plywood for the container bottom plate according to the present invention is as follows: using phenolic resin for dry veneers of equal or unequal thickness as an adhesive to glue and assemble the blanks, at a hot-pressing temperature of 130°C-180°C, 0.8 Under the hot pressing pressure of -1.6Mpa, after 30-40 minutes of hot pressing time, the glued product will be used as the base material after sanding, sawing, and repairing. The thickness of the base material after sanding should be 28±0.6mm, and then paste the impregnated film paper 1 and the impregnated film paper 3 on both sides of the substrate 2 respectively, and then under the conditions of hot pressing temperature of 130°C-180°C and hot pressing pressure of 0.8-1.6Mpa Cover and paste for 5-10 minutes, then mill the edge according to the requirements, and use waterproof paint similar to or the same color as the coated paper to seal the edge of the plywood, and finally get the coated plywood for the container bottom.

Claims (5)

1, a kind of film coating plywood for bottom plate of container is laminated to close by ply and forms, and it is characterized in that the single or double of this glued board has posted impregnated bond paper.

2, film coating plywood for bottom plate of container according to claim 1 is characterized in that impregnated bond paper is behind phenolic resins or melamine resin dipping, through suitably dry paper.

3, film coating plywood for bottom plate of container according to claim 1 and 2, it is characterized in that impregnated bond paper be in phenolic resins or melamine resin, added the alundum (Al powder, again behind the dipping through the paper of suitable drying.

4, film coating plywood for bottom plate of container according to claim 1 and 2, it is characterized in that impregnated bond paper be through behind phenolic resins or the melamine resin dipping through the paper of suitable drying on again spraying go up the paper of alundum (Al powder.

5, the production technology of film coating plywood for bottom plate of container according to claim 1, it is characterized in that adopting uniform thickness or not the dried single board of uniform thickness carry out the gluing assembly with phenolic resins as adhesive, then 130 ℃-180 ℃ hot pressing temperature, 0.8-1.6Mpa hot pressing pressure under, through 30-40 minute hot pressing time gummed, the product behind the gummed, again through fixed thick sanding, the saw limit, repairing the back uses as base material, base material thickness after the sanding should be at 28 ± 0.6mm, then impregnated bond paper is attached to the single or double of base material, being 130 ℃-180 ℃ in hot pressing temperature again is to post under the 0.8-1.6Mpa condition 5-10 minute with hot pressing pressure, then mill the limit as requested, and the employing water-repellent paint close or identical with the tectorial paper color carry out edge sealing to glued board and handle, and obtains film coating plywood for bottom plate of container at last.

Images