Production method for environment-friendly type middle-density board glue

A production method and density board technology, applied in the direction of adhesives, adhesive types, aldehyde/ketone condensation polymer adhesives, etc., can solve the problems of great harm to the human body, environmental pollution, high formaldehyde release, etc., and achieve a simple preparation process Ease of operation, stable performance, and enhanced strength
CN101063028AInactive Publication Date: 2007-10-31SHANDONG HEYOU GROUP
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SHANDONG HEYOU GROUP
Publication Date
2007-10-31
Estimated Expiration
Not applicable · inactive patent
Patent Text Reader

Abstract

The invention discloses a preparing method of environment-friendly type density plate glue, which comprises the following steps: changing mole ratio of traditional urea-formaldehyde resin formaldehyde and aquacare; adding melamine into urea-formaldehyde resin; proceeding polycondensation; changing twice throwing aquacare to third throwing aquacare; allocating formaldehyde, caustic soda, aquacare, melamine, ammonia and PVA; checking the end product. This craft possesses simple craft and stable property, which increases the total quality to another stage.
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Description

technical field

[0001] The invention relates to a preparation process of an environment-friendly adhesive for medium-density boards. Background technique

[0002] Ordinary urea-formaldehyde resin is made by addition and polycondensation of formaldehyde and urea. The board produced with it has high formaldehyde emission, serious environmental pollution and great harm to human body. And it has the disadvantages of low strength, soft core layer and thick pre-cured layer. Contents of the invention

[0003] In order to overcome the deficiencies of the prior art, the present invention provides an environment-friendly density board urea-formaldehyde resin glue to solve the problems of high formaldehyde emission, serious environmental pollution and great harm to the human body of ordinary urea-formaldehyde resin glue. The strength of the board produced is low, the core layer is soft, and the pre-cured layer is thick.

[0004] The technical solution of the present invention is ac...

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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