Formaldehyde-free medium-high-density board capable of meeting deep facing requirements and manufacturing method of medium-high-density board

A high-density board and manufacturing method technology, applied in the field of wood processing, can solve the problems of inability to meet the needs of deep veneer processing, restrict application fields, and high surface hardness, and achieve the effects of increasing strength, expanding application fields, and improving surface hardness
CN110281341AActive Publication Date: 2019-09-27BEIJING FORESTRY UNIVERSITY +2
5 Cites 5 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
BEIJING FORESTRY UNIVERSITY
Publication Date
2019-09-27

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention relates to a formaldehyde-free medium-high-density board capable of meeting deep facing requirements and a manufacturing method of the medium-high-density board. The medium-high-density board comprises the following steps of wood chipping, screening, cooking and softening, fiber separating, gluing, drying and sorting, paving, pre-pressing, hot pressing, cooling, sanding, and inspection and warehousing. The gluing comprises two steps of gluing, and specifically comprises the steps of carrying out primary gluing by using lignin glue, carrying out waterproof treatment, and then carrying out secondary gluing by using MDI glue. According to the manufacturing method, a biomass adhesive and a formaldehyde-free adhesive are adopted, a curing agent, an anti-mildew agent and the like are not added, by virtue of a two-time gluing method, formaldehyde pollution is completely eradicated from a source, and formaldehyde-free production and formaldehyde-free products are realized; and the gluing process is controlled in sequence and glue types and proportion are controlled, so that the surface hardness of the products can be improved, and the final products can be subjected to deep facing so as to achieve 2-8 millimeters.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to the field of wood processing, in particular to a formaldehyde-free deep-decorated medium-high-density board and a manufacturing method thereof. Background technique

[0002] With social development and changes in people's lifestyles and the purpose of protecting forestry resources, medium and high density boards have developed rapidly at home and abroad as a substitute for log furniture panels, and are widely used in furniture, interior decoration and packaging materials. However, due to the use of formaldehyde-based adhesives in the production process, the problem of formaldehyde pollution cannot be ignored. Formaldehyde has become one of the main pollution sources recognized by the density board industry, and after entering the family, the free formaldehyde in the density board is still continuously released. With the continuous improvement of people's attention to the environmental protection of building materials and the i...

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
Login to View More