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Formaldehyde-free film adhesive and method for manufacturing veneer board and homodromous laminated material

An adhesive and film technology, applied in the direction of adhesive, wood veneer bonding, non-polymer adhesive additives, etc., to achieve the effects of saving forest resources, high elongation at break, and high water resistance

Active Publication Date: 2011-09-14
JIANGMEN DINGSHI ADHESIVE INDAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But prior art also does not have a kind of film adhesive of the plywood that can have above-mentioned advantage concurrently

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Embodiment 1: After getting 80kg high-density polyethylene, 20kg low-density polyethylene, 0.1kg antioxidant-1076 and 1.5kg of graphite powder to mix evenly, put it into plastic extrusion blow molding equipment to produce a formaldehyde-free film adhesive I.

Embodiment 2

[0025] Embodiment 2: Get 80kg high-density polyethylene, 20kg low-density polyethylene, 0.2kg antioxidant-1076 and 1kg of graphite powder to mix evenly, put it into plastic extrusion blow molding equipment, and manufacture formaldehyde-free film adhesive II .

Embodiment 3

[0026] Embodiment 3: After getting 80kg high-density polyethylene, 20kg low-density polyethylene, 0.4kg antioxidant-1076 and 1.25kg of graphite powder to mix evenly, put it into plastic extrusion blow molding equipment to produce formaldehyde-free film adhesive Ⅲ.

[0027] Take the formaldehyde-free film adhesives I~III obtained in Examples 1-3, and existing film adhesive A (with high-density polyethylene as the main ingredient) and film adhesive B (with low-density polyethylene as the main ingredient), according to the following Method, making plywood:

[0028] ①. Arrange the wood veneers vertically and horizontally to form blanks, and lay formaldehyde film adhesive between the veneers to form a board group;

[0029] ②. Send the preformed plate group into the hot press, and under the appropriate pressure (generally, the unit pressure 10kg / cm2 can be used) 2 , use temperature 195°C), melt the film adhesive;

[0030] ③. Quickly send the hot-pressed plate group into the cold ...

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PUM

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Abstract

The invention relates to a formaldehyde-free film adhesive and a method for manufacturing a veneer board and a homodromous laminated material with multiple advantages by using the formaldehyde-free film adhesive. The veneer board with multiple advantages cannot be manufactured by using the conventional film adhesive. The formaldehyde-free film adhesive comprises 80 weight parts of high-density polyethylene, 20 weight parts of low-density polyethylene, 0.1 to 0.4 weight part of antioxidant and 1 to 1.5 weight parts of graphite powder or graphite master batch. The invention also relates to the method for manufacturing the veneer board and the homodromous laminated material. By using the formaldehyde-free film adhesive and the related method, the veneer board and the homodromous laminated material with multiple advantages such as high waterproof property, high elongation at break, high notch impact strength, ageing resistance and the like can be manufactured and can substitute raw wood in various occasions so as to save the forest resource.

Description

technical field [0001] The invention relates to a formaldehyde-free film adhesive and a method for manufacturing plywood and co-laminated materials with multiple advantages by using the formaldehyde-free film adhesive. Background technique [0002] In the past hundred years, the synthetic adhesives used in the manufacturing process of most plywood or laminated wood or related products around the world are synthetic liquid adhesives containing toxicity and formaldehyde, such as urea formaldehyde glue, melamine formaldehyde Glue, phenolic resin glue. When using these synthetic liquid glues, it is necessary to use a roller-type glue applicator to apply the glue on the wood veneers to be glued. When the wood veneers are coated with liquid glue, due to the absorption of the liquid glue containing water, This will cause the stretching and expansion of the wood veneer to cause "sandwich" or "hollow" defects between the veneers. In addition, after the wood veneer absorbs the liquid...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J123/06C09J11/04B27D1/04
Inventor 丁佩琴
Owner JIANGMEN DINGSHI ADHESIVE INDAL
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