Impregnating adhesive, impregnated bond paper and preparation method of veneer of impregnated bond paper

A technology of impregnating film paper and impregnating glue, which is applied in the field of wood processing, can solve the problems of easy cracking, high production cost, and complicated preparation process, and achieve the effect of not easy to stick, low cost, and good flexibility

Pending Publication Date: 2021-10-22
INST OF WOOD INDUDTRY CHINESE ACAD OF FORESTRY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a preparation method for impregnated glue, impregnated film paper and its veneer in order to overcome the complex preparation process, high production cost and easy cracking of the impregnated film paper veneer in the prior art. Adhesive paper veneer has the advantages of simple production process, low cost and crack resistance

Method used

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  • Impregnating adhesive, impregnated bond paper and preparation method of veneer of impregnated bond paper
  • Impregnating adhesive, impregnated bond paper and preparation method of veneer of impregnated bond paper
  • Impregnating adhesive, impregnated bond paper and preparation method of veneer of impregnated bond paper

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preparation example Construction

[0038] The second aspect of the present invention provides a preparation method of impregnated adhesive film paper, said method comprising: first immersing the raw material paper in the urea-formaldehyde resin impregnating solution to obtain paper I, and then coating the impregnating glue described in the first aspect of the present invention Cloth on paper I, obtain impregnated adhesive film paper.

[0039] Among them, the impregnated film paper prepared by using urea-formaldehyde resin and the impregnated glue described in the first aspect of the present invention has the advantages of good flexibility, easy storage, and less likely to cause adhesion.

[0040] In a preferred embodiment, the present invention does not specifically limit the raw material paper, and any common raw material paper in the field can be used in the present invention.

[0041] In a preferred embodiment, the urea-formaldehyde resin impregnation solution includes urea-formaldehyde resin and water, wher...

Embodiment 1

[0068] 1) At room temperature, soak the raw paper in an aqueous solution of urea-formaldehyde resin (the weight-average molecular weight of the urea-formaldehyde resin is 700, and the mass content is 55%) for 40 seconds, then take it out, and dry it at 110° C. for 2 minutes to obtain paper I; The impregnation amount of urea-formaldehyde resin is 100g / m 2 ;

[0069] 2) Add 1g blocked isocyanate A, 0.005 organotin catalyst A, 2g caprolactam, 1g polyethylene glycol (weight average molecular weight 400) and 0.1g release agent A to 100g melamine-formaldehyde resin aqueous solution, stir evenly at room temperature, Obtain impregnation glue, adopt roll coating mode to impregnate glue coating on paper I, dry 3min at 110 ℃, obtain impregnation film paper; Wherein, the coating amount on impregnation film paper is 50g / m 2 ;

[0070] 3) Put the above-mentioned impregnated film paper on the blockboard, and press it under the conditions of 120° C. and 1 MPa for 7 minutes to obtain the imp...

Embodiment 2

[0072] 1) At room temperature, soak the raw paper in an aqueous solution of urea-formaldehyde resin (the weight-average molecular weight of the urea-formaldehyde resin is 900, and the mass content is 60%) for 45 seconds, then take it out, and dry it at 110° C. for 3 minutes to obtain paper I; The impregnation amount of urea-formaldehyde resin is 110g / m 2 ;

[0073] 2) Add 3g blocked isocyanate A, 0.015g organotin catalyst B, 1g caprolactam, 2g polyethylene glycol (weight average molecular weight 400) and 0.2g release agent A to 100g melamine formaldehyde resin aqueous solution, stir evenly at room temperature , to obtain the impregnation glue, adopt the roll coating method to apply the impregnation glue on the paper I, dry 3min at 110°C, and obtain the impregnation film paper; wherein, the coating amount on the impregnation film paper is 60g / m 2 ;

[0074] 3) Put the above-mentioned impregnated film paper on the blockboard, and press it under the conditions of 110° C. and 1 ...

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Abstract

The invention relates to the field of wood processing, and discloses an impregnating adhesive, impregnated bond paper and a preparation method of a veneer of the impregnated bond paper. The impregnating adhesive provided by the invention comprises the following components in parts by weight: 100 parts of a melamine formaldehyde resin aqueous solution, 0.01-5 parts of blocked isocyanate and 0.06-0.3 part of a release agent. According to the impregnating adhesive provided by the invention, the technical problem that the surface of an impregnating film paper veneer is cracked can be effectively solved by utilizing the synergistic effect of the melamine formaldehyde resin aqueous solution, the blocked isocyanate and the release agent.

Description

technical field [0001] The invention relates to the field of wood processing, in particular to a method for preparing impregnated glue, impregnated film paper and a decorative panel thereof. Background technique [0002] Impregnated film paper veneer, also known as impregnated plastic molded paper veneer plywood or blockboard, is a decorative board with low raw material requirements, wide sources, high wood utilization rate, many product specifications, and good processing performance. , Widely used in the fields of furniture manufacturing and decoration. [0003] Due to the limitation of plywood or blockboard, the current impregnated film paper veneer is generally prepared by low temperature, low pressure and long cycle process. This preparation process is likely to cause incomplete curing of melamine formaldehyde resin, dehydration and curing during use, and cracks appear . When used in the northern region, surface cracking is prone to occur, especially when the temperat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H19/10D21H17/08D21H17/59D21H17/51D21H17/12D21H17/07D21H17/53D21H17/49D21H23/32D21H25/06B27D1/00
CPCD21H19/10D21H17/08D21H17/59D21H17/51D21H17/12D21H17/07D21H17/53D21H17/49D21H23/32D21H25/06B27D1/00
Inventor 屈伟彭立民冯云吴玉章
Owner INST OF WOOD INDUDTRY CHINESE ACAD OF FORESTRY
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