Formaldehyde-free plywood and fabrication method thereof

A plywood and formaldehyde technology, applied in chemical instruments and methods, manufacturing tools, wood layered products, etc., can solve problems such as poisoning, achieve good water resistance, excellent physical and mechanical properties, and solve environmental pollution effects
CN103144152AActive Publication Date: 2013-06-12INST OF WOOD INDUDTRY CHINESE ACAD OF FORESTRY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
INST OF WOOD INDUDTRY CHINESE ACAD OF FORESTRY
Publication Date
2013-06-12

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Abstract

A method for fabricating a formaldehyde-free plywood with waste plastic alloy is used for fabricating the novel plywood without free formaldehyde being released by fabricating a plastic alloy film with different waste plastics and taking the plastic alloy film as a bonding material. The method comprises the steps of smashing and cleaning the different waste plastics, allowing the waste plastics to be independent or mixing the waste plastics to a scale, adding relevant packing and assistant, conducting film blowing and calendering to prepare the plastic alloy adhesive film in certain breadth and thickness, conducting crossed assembly with a wood veneer, conducting hot pressing and cold pressing, and obtaining the formaldehyde-free plywood. The fabrication method for the nontoxic and environment-friendly formaldehyde-free plywood with the waste plastics solves the problem that the free formaldehyde released by the ordinary plywood has a toxic action on an environment and a human body, and a recycling approach for the waste plastics is provided.
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Description

technical field

[0001] The patent of the present invention relates to a formaldehyde-free plywood prepared by using waste plastic alloy and its preparation method, especially a method for preparing formaldehyde-free plywood by using waste plastic alloy film. Background technique

[0002] At present, most of the adhesives used in plywood and decorative plywood products on the market are adhesives containing formaldehyde. The products release a large amount of free formaldehyde during production and use, causing indoor air pollution and posing a great threat to the health of producers and consumers.

[0003] The Chinese patent "Production method of high-density polyethylene plywood" with application number 200710100722.4 discloses a method of replacing urea-formaldehyde, phenol-formaldehyde and other adhesives with high-density polyethylene, respectively rolling pinholes on the veneer and then forming a billet, and then heating, Production method for pressure-prepared plywood....

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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