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A process for wood-plastic composite manufacturing of formaldehyde-free bending and gluing parts

A technology of wood-plastic composites and parts, which is applied in the direction of manufacturing tools, wood processing appliances, and the joining of wooden veneers. It can solve the problems of inability to make curved furniture parts, reduce the bending performance of veneers, and affect the environmental protection of furniture, etc. problems, to achieve the effect of improving the surface decoration effect, solving the problem of formaldehyde pollution, and low requirements for equipment and molds

Active Publication Date: 2016-01-06
FUJIAN AGRI & FORESTRY UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the traditional production process, multi-layer glued curved wood furniture uses rotary-cut veneer as the core board and sliced ​​veneer as the surface board. Aldehyde adhesives are bonding materials, and there are different degrees of free formaldehyde in the prepared furniture products, which seriously affects the environmental protection of furniture and reduces the added value of products
At present, there has been research on rolling dense pinholes on the veneer surface, using high-density polyethylene (HDPE) plastic film as an adhesive, and making flat plywood by hot pressing according to the conventional plywood blanking method, but the technology cannot be used to make curved plywood. For furniture parts, due to the dense pinholes rolled on the surface of the veneer, the bending performance of the veneer is reduced, which is easy to cause the slab to break during the bending process, and the scrap rate increases

Method used

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  • A process for wood-plastic composite manufacturing of formaldehyde-free bending and gluing parts
  • A process for wood-plastic composite manufacturing of formaldehyde-free bending and gluing parts

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] (1) Preparation of "C" type chair back curved parts: According to the large radius of curvature of the part (650mm), select Eucalyptus veneer, the thickness of the veneer is 1.5mm, and the moisture content of the veneer is 10%, and glued on the veneer The surface is processed by rolling holes, the pores are irregularly distributed, and the number of pores is 20-30 / cm 2 Between, the veneer is cut into specifications length × width: 400 × 250mm;

[0016] (2) Cutting the prefabricated polyethylene plastic film to a size 2mm larger in width than the veneer;

[0017] (3) According to the thickness of the part is 15mm, combined with the thickness of the veneer, plastic film and the compression rate of the pressurization and bending process, the layers of 11 layers of veneer and 10 layers of plastic film are alternately stacked to form the billet. After the billet is formed, the upper and lower sides for the veneer;

[0018] (4) Place the slab in a hard mold made of "C" type...

Embodiment 2

[0022] (1) Preparation of "L" shaped chair back and seat integrated curved parts: According to the large radius of curvature of the part (100mm), birch veneer is selected, the thickness of the veneer is 1.5mm, the moisture content of the veneer is 10%, and Carry out rolling hole treatment on the veneer glued surface, the pores are irregularly distributed, and the number of pores is 20-30 / cm 2 , the veneer is cut into specifications length × width: 1000 × 400mm;

[0023] (2) Cutting the prefabricated polyethylene plastic film to a size 2mm larger in width than the veneer;

[0024] (3) According to the thickness of the part is 15mm, combined with the thickness of the veneer, plastic film and the compression rate of the pressurization and bending process, the layers of 11 layers of veneer and 10 layers of plastic film are alternately stacked to form the billet. After the billet is formed, the upper and lower sides for veneer

[0025] (4) Place the slab in a hard mold made of "L...

Embodiment 3

[0029] (1) Preparation of curved parts of armrest of "U" leisure chair: according to the small radius of curvature (60mm) of the part, choose ash veneer, the thickness of the veneer is 1.5mm, and the moisture content of the veneer is 12%. The gluing surface of the board is processed by rolling holes, the pores are irregularly distributed, and the number of pores is 20-30 / cm 2 Between, the veneer is cut into a specification length×width: 800×220mm;

[0030] (2) Cutting the prefabricated polyethylene plastic film to a size 2mm larger in width than the veneer;

[0031] (3) According to the thickness of the part is 10mm, combined with the thickness of the veneer and plastic film and the compression rate of the pressurization and bending process, the layers of 9 layers of veneer and 8 layers of plastic film are alternately stacked to form the billet. After the billet is assembled, the upper and lower sides for veneer

[0032] (4) Place the slab in a hard male and female mold made...

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Abstract

The invention relates to a new process of utilizing single-board / plastic film composite for manufacturing formaldehyde-free bending glued furniture parts. A plastic film serves as bonding material, a wooden single board serves as a basic unit, rolling hole processing is performed on a single board gluing face, tree type, thickness and specification of the single board are selected according to product usage, and a blank can be assembled, the board blank is placed in a special die to heat and press in high frequency, the board blank is bent, glued and formed, the plastic film is solidified after being cooled, and formaldehyde-free bending glued furniture parts are obtained. The process is simple and low in producing cost; the products are free of pollution and recyclable during manufacture, processing and usage, and has the advantages of environment protection, energy efficiency and efficiency, an environment friendly, safe and healthy consumption concept of the wood industry and the furniture industry can be met, and the process has extensive application value.

Description

technical field [0001] The invention is a new environmental protection technology suitable for industrialized manufacturing of curved formaldehyde-free furniture components, which belongs to the technical field of curved wood furniture production. Background technique [0002] The bending and gluing process of multi-layer veneers is an essential process for preparing curved furniture parts, and is widely used in the production of modern curved wood furniture. In the traditional production process, multi-layer glued curved wood furniture uses rotary-cut veneer as the core board and sliced ​​veneer as the surface board. Aldehyde adhesives are bonding materials, and there are different degrees of free formaldehyde in the prepared furniture products, which seriously affects the environmental protection of furniture and reduces the added value of products. At present, there has been research on rolling dense pinholes on the veneer surface, using high-density polyethylene (HDPE) ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B27D1/06B27D1/08
Inventor 叶翠仙唐兴平徐志杰陈月琴杨伟星
Owner FUJIAN AGRI & FORESTRY UNIV
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