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Method for manufacturing veneer overlaid wood and plastic composite plate without extra adhesive

A technology of wood-plastic composite and manufacturing method, which is applied in the direction of flat products, wood processing appliances, household components, etc., can solve the problems of increasing manufacturing costs, achieve environmental protection in production and use, good impregnation peel strength, good heat resistance and water resistance Effect

Inactive Publication Date: 2013-06-19
NORTHEAST FORESTRY UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The present invention aims to solve the problem that the common urea-formaldehyde resin and phenolic resin are difficult to bond the wood-plastic composite material to the veneer, veneer and other wood decoration materials firmly, and the use of isocyanate and other adhesives greatly increases the manufacturing cost. Method for manufacturing veneer veneered wood-plastic composite board with additional adhesive applied

Method used

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  • Method for manufacturing veneer overlaid wood and plastic composite plate without extra adhesive
  • Method for manufacturing veneer overlaid wood and plastic composite plate without extra adhesive
  • Method for manufacturing veneer overlaid wood and plastic composite plate without extra adhesive

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specific Embodiment approach 1

[0011] Specific Embodiment 1: In this embodiment, the manufacturing method of veneer veneer wood-plastic composite board without additional application of adhesive is carried out according to the following steps: 1. Mix wood fiber, thermoplastic and maleic anhydride grafted plastic evenly, Form the mixture, pave the mixture in the mold frame to form a loose slab; 2. Apply a vertical pressure of 0.2-0.6 MPa to the slab, remove the mold frame, and preheat to make the temperature reach 120-140 °C; 3. After preheating, place the slab on a veneer, and place another veneer on the upper surface of the slab to form a slab with a sandwich structure; 4. Put the slab with a sandwich structure into the hot press, Thickness gauges are placed at both ends of the hot-pressing plate to control the thickness of the slab to be 6-16mm, and hot-pressing is carried out, the hot-pressing temperature is 175-185°C, the hot-pressing pressure is 2-6MPa, and the hot-pressing time is 6-13min; After press...

specific Embodiment approach 2

[0015] Embodiment 2: This embodiment is different from Embodiment 1 in that: the size of the wood fiber in Step 1 is 16-80 mesh. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0016] Embodiment 3: This embodiment differs from Embodiment 1 or Embodiment 2 in that: in step 1, the mass ratio of wood fiber to thermoplastic is 50-55:45-50. Others are the same as in the first or second embodiment.

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Abstract

The invention discloses a method for manufacturing a veneer overlaid wood and plastic composite plate without an extra adhesive and relates to a method for manufacturing a veneer overlaid wood and plastic composite plate. The invention aims to solve the problems that a wood and plastic composite material and veneer, sheet and other wood decorative materials are hardly firmly adhered through the conventional urea resin and phenolic resin and the manufacturing cost is greatly increased due to the use of isocyanate and other adhesives. The method comprises the following steps of: mixing wood fibers, thermoplastic plastics and maleic anhydride grafted plastics, and paving the mixture in a frame to obtain a plate blank; applying vertical pressure to the plate blank and preheating; putting the plate blank on a veneer, and putting another veneer on the plate blank to obtain a plate blank having a sandwich structure; performing hot-pressing on the plate blank in a hot press; and cooling and sizing to obtain the wood and plastic composite plate with overlaid veneers. The method does not need any extra adhesive and is easy to operate; and the veneer overlaid wood and plastic composite plateis environment-friendly in production and use, low in manufacturing cost and firm in gluing, and is applied in the fields of furniture manufacturing, architectural ornament, traffic transportation and the like.

Description

technical field [0001] The invention relates to a method for manufacturing veneer veneered wood-plastic composite boards. Background technique [0002] Wood Plastic Composites (WPC for short) refers to a composite material composed of plant fibers or powders (such as wood, bamboo, peanut shells, coconut shells, flax, straw, etc.) and thermoplastic polymers. This kind of material has the outstanding characteristics of high strength, high hardness, acid and alkali resistance, corrosion resistance, good processing performance, no deformation, no formaldehyde, and easy recycling. It is a green environmental protection material with great development prospects. WPC is mainly used in building materials, automobile industry, logistics packaging, warehousing and transportation, decorative materials and daily utensils. However, the appearance of wood-plastic materials is quite different from that of natural wood. It does not have natural texture and soft color, which makes it diffic...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B27N3/20
Inventor 王伟宏袁森林张晨夕王清文王海刚
Owner NORTHEAST FORESTRY UNIVERSITY
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