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Aldehyde-free composite artificial board and manufacturing method thereof

A technology for wood-based panels and plywood, which is used in manufacturing tools, chemical instruments and methods, and wood-layered products, etc., can solve the problem of high release of free formaldehyde, and achieve the effect of promoting green life, reducing costs, and having more varieties of flowers.

Inactive Publication Date: 2016-09-28
NINGBO ZHONGJIA LOW CARBON NEW TECH RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, most of the wood-based panels in the domestic market are produced with urea-formaldehyde adhesives, which release high free formaldehyde, and the environmental protection level is generally below E1.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A formaldehyde-free composite wood-based panel, comprising a base material layer and a veneer layer, the veneer layer is bonded to one or both sides of the base material layer by an formaldehyde-free adhesive, and the base material layer is made of wood veneer Raw materials, formaldehyde-free plywood with thermoplastic resin film as adhesive. Specifically, the above-mentioned formaldehyde-free adhesive is a mixture of isocyanate and polyvinyl acetate in a weight ratio of 15% and 85%, and the amount of glue applied is 150-220g / m 2 ; The veneer layer is 0.1-0.5mm thick decorative non-woven fabric or fabric wall covering; the thermoplastic resin film is PE plastic.

[0025] The manufacture method of above-mentioned formaldehyde-free composite wood-based panel is as follows:

[0026] Using 1.5mm thick domestic poplar veneer as raw material, recycled PE plastic film as adhesive, and making 17.5-18mm thick 13-layer formaldehyde-free plywood according to the process of hot pr...

Embodiment 2

[0029] A formaldehyde-free composite wood-based panel, comprising a base material layer and a veneer layer, the veneer layer is bonded to one or both sides of the base material layer by an formaldehyde-free adhesive, and the base material layer is made of wood veneer Raw materials, formaldehyde-free plywood with thermoplastic resin film as adhesive. Specifically, the above-mentioned formaldehyde-free adhesive is a mixture of isocyanate and polyvinyl acetate in a weight ratio of 20% and 80%, and the amount of glue applied is 150-200g / m 2 ; The veneer layer is 0.1-0.5mm thick decorative non-woven fabric or non-woven fabric; the thermoplastic resin film is recycled PP plastic.

[0030] The manufacture method of above-mentioned formaldehyde-free composite wood-based panel is as follows:

[0031] Using 2mm thick domestic eucalyptus veneer as raw material and recycled PP plastic film as adhesive, the 18.5mm thick 11-layer formaldehyde-free plywood is made by hot pressing and then c...

Embodiment 3

[0034] A formaldehyde-free composite wood-based panel, comprising a base material layer and a veneer layer, the veneer layer is bonded to one or both sides of the base material layer by an formaldehyde-free adhesive, and the base material layer is made of wood veneer Raw materials, formaldehyde-free plywood with thermoplastic resin film as adhesive. Specifically, the above-mentioned formaldehyde-free adhesive is a mixture of isocyanate and polyvinyl acetate in a weight ratio of 15% and 85%, and the amount of glue applied is 150-200g / m 2 ; The veneer layer is 0.2-1mm thick decorative non-woven fabric or fabric wall covering; the thermoplastic resin film is PE plastic.

[0035] The manufacture method of above-mentioned formaldehyde-free composite wood-based panel is as follows:

[0036] Using 2.5mm thick imported hemlock veneer as raw material and recycled PE plastic film as adhesive, a 17mm thick 7-layer formaldehyde-free plywood was made by hot pressing and then cold pressing...

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Abstract

The invention provides a formaldehyde-free composite wood-based panel, comprising a substrate layer and a veneer layer, the veneer layer is bonded to one or both sides of the base material layer by an formaldehyde-free adhesive, the base The material layer is formaldehyde-free plywood with wood veneer as raw material and thermoplastic resin film as adhesive. The method for manufacturing the formaldehyde-free composite wood-based panel comprises the following steps: using wood veneer as a raw material, using a thermoplastic resin film as an adhesive, first hot-pressing and then cold-pressing to form formaldehyde-free plywood; using formaldehyde-free plywood as a base material, Repair and scrape putty on both sides of the base material; after sanding the above base material, apply formaldehyde-free adhesive on one or both sides of the base material, and glue the veneer layer; cold press the above board at room temperature to make the adhesive solidify. The invention solves the problems of high formaldehyde content, complex process and high cost of the existing decorative boards, and has the advantages of many kinds of patterns, beautiful styles, paint-free and environmental protection, convenient processing and use, and low cost.

Description

【Technical field】 [0001] The invention relates to a wood-based panel and a manufacturing method thereof, in particular to a formaldehyde-free composite wood-based panel and a manufacturing method thereof. 【Background technique】 [0002] The output of wood composite wood-based panels such as wood flooring, fiberboard and plywood in China has been in the forefront of the world for many years, and it is one of the most used materials in interior decoration and furniture. However, a large number of such products have problems such as low adhesive quality and high release of free formaldehyde, which are harmful to human health and the environment; at the same time, most of these products are non-structural materials with large variations in strength, unstable quality, and poor durability. With the continuous improvement of the formaldehyde emission standards in wood-based panels all over the world, my country's panel companies have entered the stage of structural adjustment, and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B21/14B32B21/08B32B7/10B32B33/00B32B37/10B32B37/12B32B37/06B32B37/08B32B38/00B27D1/00B27D1/06B27G1/00
CPCB32B21/14B27D1/00B27D1/06B27G1/00B32B7/10B32B21/08B32B33/00B32B37/06B32B37/08B32B37/10B32B37/1284B32B38/0012B32B38/0036B32B2038/0076
Inventor 王建和王正高子震刘斌葛文枝葛诗健
Owner NINGBO ZHONGJIA LOW CARBON NEW TECH RES INST
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