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Production process of formaldehydeless three-layer solid-wood composite floor

A technology of solid wood composite floor and production process, applied in the direction of adhesive type, ester copolymer adhesive, conjugated diene adhesive, etc., can solve the problem of excessive formaldehyde emission and other problems

Inactive Publication Date: 2012-02-08
上海诺科化学油剂有限公司 +2
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AI Technical Summary

Problems solved by technology

However, judging from the current market situation, plywood manufacturers still mainly use trialdehyde glue, mainly due to cost considerations. Therefore, the phenomenon of formaldehyde emission exceeding the standard is relatively serious

Method used

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Experimental program
Comparison scheme
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Embodiment Construction

[0013] The adhesive formula is: main glue: flour: polymeric MDI=1:0.40:0.20

[0014] The weight composition of the main rubber is: 50 parts of polyvinyl alcohol, 20 parts of polyvinyl acetate, and 30 parts of polybutylacrylate-vinyl acetate.

[0015] The production process of the three-layer solid wood composite floor: the panel is made of oak (thickness of sawn wood is 3.2mm), the bottom plate is made of poplar (thickness of rotary cut wood is 2.5mm), and the core board is made of Chinese fir (thickness of sawn wood is 10.5mm); Good core boards, bottom boards and panels are glued and cold-pressed to form a three-layer solid wood composite floor. The laying time is 30 minutes, and the cold-pressing pressure is 13kg / cm 2 ; Aging for 7 days; splitting and repairing; planing and tenoning on all sides; finally selecting boards for repairing, painting, inspection and grading, packaging, and the finished product is obtained. The thickness of the finished floor is 15mm.

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Abstract

The invention relates to a production process of a formaldehydeless three-layer solid-wood composite floor, which is formed by hot pressing or cold pressing a core board, a bottom board and a panel through an adhesive. The production process is characterized in that the adhesive comprises the following components by weight: the ratio of primary agent, filler and curing agent is 1:0.01-0.50:0.01-0.50. The production process is mainly and technically characterized in that by a formaldehydeless adhesive technology, no free formaldehyde releasing resource exists, so that a formaldehydeless three-layer solid-wood composite floor product is obtained. The performance index of the product conforms to the F***8 requirements of the international highest standard JAS233-2003 specifications for The Japanese agriculture standard of the common plywood, and the release amount of formaldehyde is less than 0.3mg / L.

Description

technical field [0001] The invention relates to a production process of a formaldehyde-free three-layer solid wood composite floor used in furniture and decoration industries. Background technique [0002] With the improvement of people's requirements on the indoor environment, the formaldehyde emission in wood-based panels has attracted more and more attention. Research and development of efficient, environmentally friendly and low-cost adhesives has become a development trend in the field of wood-based panels. In recent years, remarkable achievements have been made in scientific research and development. Adhesives such as low-toxicity urea-formaldehyde adhesive, fast-curing phenolic adhesive, artificial low-pressure short-cycle veneer resin, and high-performance copolymer emulsion have been developed, and tannin adhesive, sulfite liquid adhesive, and cement , Gypsum inorganic adhesive. When my country's wood-based panel industry develops rapidly at a rate higher than the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E04F15/02C09J129/04C09J125/14C09J131/04C09J109/06C09J167/00C09J123/08C09J133/04
Inventor 倪红波刁晓松胡永生
Owner 上海诺科化学油剂有限公司
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