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Method for producing low-formaldehyde low-volatile organic compound (VOC) melamine impregnated paper

A technology of melamine and its production method, which is applied in the direction of paper, papermaking, textiles and papermaking, can solve problems affecting people's health, achieve the effects of protecting life and health, alleviating air pollution, and reducing the content of formaldehyde and VOC

Inactive Publication Date: 2013-01-16
CHANGZHOU WEIXING DECORATIVE MATERIALS
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Problems solved by technology

[0003] The purpose of the present invention is to provide a low-formaldehyde and low-VOC melamine-impregnated paper production method to solve the problem that the melamine-impregnated paper facing wood-based panels in the prior art will release formaldehyde and VOC, i.e. volatile organic compounds, which affect people. health problems

Method used

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Embodiment Construction

[0011] Preferred embodiments of the present invention will be described in detail below.

[0012] This embodiment provides a method for producing low-formaldehyde and low-VOC melamine impregnated paper, including the following production steps: glue making, glue compounding, first impregnation, first drying, second impregnation, second drying, cooling and cutting, Paving and pressing, in the glue making process, prepare urea-formaldehyde resin glue with a molar ratio of urea to formaldehyde of 1.15-1.30:1.08-1.12, preferably 1.27:1.10, using an alkali-acid-alkali synthesis process. In the one-step alkaline reaction process, adjust the pH value to 9, and after adding urea, heat up to 80°C for 30 minutes; in the second step acidic reaction process, adjust the pH value to 4.6, and react for 40 minutes; In the step alkaline reaction process, adjust the pH value to 8 and react for 20 minutes. During the first impregnation process, the pre-curing rate of the urea-formaldehyde resin...

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Abstract

The invention provides a method for producing low-formaldehyde low-volatile organic compound (VOC) melamine impregnated paper. The method comprises the following steps of: making an adhesive, namely preparing an urea-formaldehyde resin adhesive in which the molar ratio of urea to formaldehyde is (1.15-1.30):(1.08-1.12) by an alkali-acid-alkali synthetic process; preparing glue; impregnating for the first time; drying for the first time; impregnating for the second time; drying for the second time; cooling and cutting; paving; and pressing and pasting. According to the method for producing the low-formaldehyde low-VOC melamine impregnated paper, a low-urea low-formaldehyde resin adhesive is blended by reducing the molar ratio of formaldehyde and selecting a reasonable adhesive making process in the adhesive making process; and the content of formaldehyde and VOCs in artificial boards is reduced, the indoor air pollution is reduced, the method has a great significance for protecting the life health of people, and the melamine impregnated paper meets the national standard and can be directly used for indoor shaving boards and oriented strand boards.

Description

technical field [0001] The invention relates to a production method of melamine-impregnated paper, in particular to a production method of low-formaldehyde and low-VOC melamine-impregnated paper. Background technique [0002] As people continue to pursue new heights of material civilization and spiritual civilization, melamine-impregnated paper-faced wood-based panels are popular among people because of their strong oil resistance, water resistance, and stain resistance. However, melamine-impregnated paper veneer wood-based panels will release formaldehyde and VOC, namely volatile organic compounds, during use, which will affect people's health. For the release of formaldehyde from wood-based panels, my country's national standard 18580-2001 has stipulated that the limit value of formaldehyde release from particleboard and oriented strand board directly used indoors is E1≤9.0mg / 100g. Reducing the content of formaldehyde and VOC in wood-based panels and alleviating indoor ai...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H17/51D21H17/49C08G12/12
Inventor 张杰张建文
Owner CHANGZHOU WEIXING DECORATIVE MATERIALS
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