CN1398730A - Production process of artificial color veneer board - Google Patents

Abstract

The invention discloses a production process of colored veneer for artificial boards, which includes the process flow of base material treatment, modified adhesive, composite plastic powder, transfer glue, transfer printing paper and the like. Using modified adhesives, composite plastic powder, and through specific technology, we can obtain color-finish wood-based panels and furniture with clear patterns, hard texture, wear resistance, heat resistance, water resistance, corrosion resistance, and durability. The invention has simple production process, less investment and low cost, and is easy to realize industrialized production, and the performance of the product meets the requirements of national standards. It can be widely used in wood-based panel production enterprises, furniture industry, toy industry, craft manufacturing industry and decoration industry, etc., to increase the added value of products.

Description

A kind of production technology of wood-based panel color veneer

technical field

The invention relates to a process for producing decorative effects, in particular to a process for producing colored decorative surfaces of artificial boards.

Background technique

At present, wood-based panels are decorated with veneer veneer technology, printed decorative paper veneer technology, transfer printing technology and direct printing technology. The veneer veneer technology is a decorative technology that uses precious tree species to cut veneer glue and paste it on the surface of the wood-based panel. With the continuous reduction of precious tree species, resources are limited and prices are high. At the same time, problems such as surface cracks and chromatic aberration are prone to occur, and it is difficult to realize continuous automatic production in industry. Printed decorative paper veneer technology is a technology in which decorative paper printed with wood grain or patterns is glued on the surface of wood-based panels, and then painted. This technology is complex in process, high in cost, poor in pattern definition, easy to peel off, and poor in wear resistance. Transfer printing is to use a special transfer film to transfer the wood grain on it to the base wood-based panel by heating and pressure. It is a physical and mechanical combination method. This technology requires a special transfer film, which has high technical requirements, complicated production process, high cost, poor definition and easy peeling. Direct printing is a finishing method that directly prints decorative patterns on the surface of wood-based panels and then applies a transparent protective coating. This technology has extremely high requirements on the substrate, and the printing pattern has poor adhesion and wear resistance.

Contents of the invention

The purpose of the present invention is to provide a production process for the color veneer of wood-based panels, which uses transfer printing paper to transfer the pattern on the paper to the solidified plastic powder layer through a specific process technology, and forms a firm surface on the surface of the wood-based panel. Colored floral pattern.

The technical scheme that the present invention adopts is as follows:

plan 1:

1) Substrate treatment: sand the surface with a belt machine or emery cloth;

2) Apply modified adhesive: the amount of glue applied is 80-160g/m ² ;

3) Spray composite plastic powder: the thickness of the plastic powder is 0.05-0.60mm; it is solidified at a temperature of 140-200°C and a time of 1-30 minutes, and cooled to -10-60°C;

4) Apply transfer glue and paste transfer printing paper: put it in a drying oven or spray steam to combine the pattern on the transfer printing paper with plastic powder, then remove the paper, cool, paint or not paint, and get the finished product.

Scenario 2:

1) Substrate treatment: sand the surface with a grinding wheel or emery cloth;

2) Apply modified adhesive: the amount of glue applied is 80-160g/m ² ;

3) Spray composite plastic powder: the thickness of the plastic powder is 0.05-0.60mm; it is solidified at a temperature of 80-200°C and a time of 5-30 minutes, and cooled to -10-60°C;

4) Lay transfer printing paper and carry out hot pressing. The hot pressing temperature is 120-200°C, the hot-pressing pressure is 0.05-2.0MPa, and the hot-pressing time is 1-25 seconds. The plastic powder is combined, then de-papered, cooled, painted or not painted to get the finished product.

Materials for the above scheme:

1) The base material is fiberboard, particleboard, plywood, bamboo plywood, solid wood board, non-wood wood-based board;

2) The modified adhesive is modified urea-formaldehyde resin glue, modified phenolic resin glue, modified polyvinyl acetate emulsion glue;

3) Composite plastic powder is epoxy powder, polyester powder, polyethylene powder, polyurethane powder, conductive powder, corrosion-resistant powder;

4) The transfer glue is polyethylene: water, and its weight ratio is 1:1-3.

The wood-based panel surface decoration technology of the present invention refers to that under certain transfer printing temperature conditions, the dye molecules on the paper begin to sublime, and form a concentration gradient between the paper and the solidified surface of the powder coating, when the solidified surface of the powder coating also reaches the transfer printing temperature At this time, dye molecules start to be adsorbed until a certain surface saturation value is reached, so that the dye molecules have a good affinity with the resin.

The beneficial effects that the present invention has are:

Using modified adhesives, composite plastic powder, and through specific technology, we can obtain color-finish wood-based panels and furniture with clear patterns, hard texture, wear resistance, heat resistance, water resistance, corrosion resistance, and durability. The invention has simple production process, less investment and low cost, and is easy to realize industrialized production, and the performance of the product meets the requirements of national standards. It can be widely used in wood-based panel production enterprises, furniture industry, toy industry, craft manufacturing industry and decoration industry, etc., to increase the added value of products.

Detailed ways

Several examples of the invention are provided below.

Example 1:

A medium-density fiberboard with a thickness of 12mm is sanded with 180# abrasive cloth, and the modified urea-formaldehyde resin glue is evenly coated on the surface of the fiberboard with a coating amount of 80g/ ^m2 , and then polyester plastic powder is sprayed on the surface. The thickness is 0.15mm, after the temperature is 180°C, the time is 20min, after heat-melt solidification, it is cooled to the surface temperature of 30°C, and then the transfer printing paper is placed on the surface, the temperature is 180°C, the pressure is 0.1MPa, and the time is 5 seconds. Press transfer printing, then de-paper, cool, and paint until the finished product.

Example 2:

The fir floor with a thickness of 18mm is sanded with 180# emery cloth, and the sanded surface is evenly coated with modified urea-formaldehyde resin glue at a rate of 80g/ ^m2 , and then polyethylene powder and polyester are sprayed on the surface of the furniture Mixed plastic powder with a powder weight ratio (2:1), thickness of 0.18mm, heat-melted and solidified at 180°C for 10 minutes, then cooled to 30°C, and then uniformly coated with transfer glue on the surface, the amount of glue applied is 50g/ m ² , paste transfer printing paper, steam transfer printing at 180°C, pressure 0.2MPa for 10 minutes, then remove paper, and cool to finished product.

Example 3

3mm thick plywood, use 150# emery cloth to sand the surface, apply modified polyvinyl acetate emulsion glue on the sanded surface evenly with the glue amount of 100g/ ^m2 , and then spray polyethylene plastic powder, the thickness is 0.12 mm, heat-melt and solidify at 180°C for 1.5 minutes, cool to 30°C, lay transfer printing paper, heat-press transfer printing at 160°C, pressure 0.1MPa, time 5 seconds, and cool the adhesive paper to the finished product.

Claims (4)

1. A kind of wood-based panel color veneer production process is characterized in that its production process is as follows: 1) Substrate treatment: sand the surface with a belt machine or emery cloth; 2) Apply modified adhesive: the amount of glue applied is 80-160g/m ² ; 3) Spray composite plastic powder: the thickness of the plastic powder is 0.05-0.60mm; it is solidified at a temperature of 80-200°C and a time of 1-30 minutes, and cooled to -10-60°C; 4) Apply transfer glue and paste transfer printing paper: put it in a drying oven or spray steam at a temperature of 100-200°C to combine the pattern on the transfer printing paper with the plastic powder, then remove the paper, cool, and paint or not , to get the finished product. 2. A kind of wood-based panel color veneer production process according to claim 1, is characterized in that: 1) The base material is fiberboard, particleboard, plywood, bamboo plywood, solid wood board, non-wood wood-based board; 2) The modified adhesive is modified urea-formaldehyde resin glue, modified phenolic resin glue, modified polyvinyl acetate emulsion glue; 3) Composite plastic powder is epoxy powder, polyester powder, polyethylene powder, polyurethane powder, conductive powder, corrosion-resistant powder; 4) The transfer glue is polyethylene: water, and its weight ratio is 1:1-3. 3. A production process of wood-based panel color veneer, characterized in that its production process is as follows: 1) Substrate treatment: sand the surface with a belt machine or emery cloth; 2) Apply modified adhesive: the amount of glue applied is 80-160g/m ² ; 3) Spray composite plastic powder: the thickness of the plastic powder is 0.05-0.60mm; it is solidified at a temperature of 80-200°C and a time of 1-30 minutes, and cooled to -10-60°C; 4) Lay transfer printing paper and carry out hot pressing. The hot pressing temperature is 120-200°C, the hot-pressing pressure is 0.05-2.0MPa, and the hot-pressing time is 1-25 seconds. The plastic powder is combined, then de-papered, cooled, painted or not painted to get the finished product. 4. A kind of wood-based panel color veneer production process according to claim 3, is characterized in that: 1) The base material is fiberboard, particleboard, plywood, bamboo plywood, solid wood board, non-wood wood-based board; 2) The modified adhesive is modified urea-formaldehyde resin glue, modified phenolic resin glue, modified polyvinyl acetate emulsion glue; 3) Composite plastic powder is epoxy powder, polyester powder, polyethylene powder, polyurethane powder, conductive powder, and corrosion-resistant powder.