A formaldehyde-free wood-based panel with impregnated film paper decoration and its preparation method

A technology of impregnating film paper and wood-based panels, which is applied in special paper, papermaking, paper, etc., can solve the problems of low glue hanging, high viscosity and poor physical properties of decorative paper, and achieve the best surface effect of impregnated film paper , the effect of moderate viscosity

Inactive Publication Date: 2021-10-22
RES INST OF FORESTRY NEW TECH CHINESE ACAD OF FORESTRY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above-mentioned organic polymer resin adhesives are difficult to penetrate into the interior of the decorative base paper due to their high viscosity, large particle size, and high degree of crosslinking, and there are many problems.
Compared with the traditional urea-formaldehyde glue and melamine-formaldehyde glue, the decorative paper impregnated with this kind of adhesive has a low glue content and poor physical properties, especially poor scratch resistance, low hardness, glossiness and plumpness. It meets the requirements of the relevant national standards, and because the glue is difficult to penetrate into the paper layer, there is a defect of peeling between the decorative paper and the paper

Method used

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  • A formaldehyde-free wood-based panel with impregnated film paper decoration and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] 1) Add all the pH regulator and deionized water, 1 / 3 soft monomer, 1 / 3 hard monomer, 1 / 3 initiator and all emulsifiers into the reactor, the stirring blade is at an angle of 50° to the horizontal plane, and the paddle The height from the leaf to the bottom of the reaction vessel is 1 / 2 of the liquid level, the stirring speed is 200r / min, and the reaction is stopped immediately after the bluish light is turned to prepare the pre-emulsion.

[0033] 2) Mix the remaining amount of soft monomer and hard monomer evenly, add dropwise to the pre-emulsion with the remaining amount of initiator at 85°C, raise the temperature to 85°C under stirring, and stir at a speed of 150r / min After 30 minutes of dripping, keep the stirring paddle at an angle of 50° to the horizontal plane during the dropping process, and the height between the paddle and the bottom of the reaction vessel is 1 / 2 of the liquid level. After the dropping is completed, keep warm for 20 minutes to prepare a water-ba...

Embodiment 2

[0044] 1) Add all the pH regulator and deionized water, 1 / 3 soft monomer, 1 / 3 hard monomer, 1 / 3 initiator and all emulsifiers into the reactor, the stirring blade is at an angle of 60° to the horizontal plane, and the paddle The height between the leaves and the bottom of the reaction vessel is 1 / 3 of the liquid level, the stirring speed is 150r / min, and the reaction is stopped immediately after the bluish light is turned to prepare the pre-emulsion.

[0045] 2) Mix the remaining amount of soft monomer and hard monomer evenly, add dropwise to the pre-emulsion with the remaining amount of initiator at 85°C, raise the temperature to 85°C under stirring, and stir at a speed of 100r / min After 30 minutes of dripping, keep the stirring paddle at an angle of 60° to the horizontal plane during the dropping process, and the height between the paddle and the bottom of the reaction vessel is 1 / 3 of the liquid level. After the dropping, keep warm for 30 minutes to prepare a water-based acr...

Embodiment 3

[0056] 1) Add all the pH regulator and deionized water, 1 / 3 soft monomer, 1 / 3 hard monomer, 1 / 3 initiator and all emulsifiers into the reactor, the stirring blade is at an angle of 50° to the horizontal plane, and the paddle The height between the leaf and the bottom of the reaction vessel is 1 / 2 of the liquid level, the stirring speed is 180r / min, and the reaction is stopped immediately after the bluish light is turned to prepare the pre-emulsion.

[0057] 2) Mix the remaining amount of soft monomer and hard monomer evenly, add dropwise to the pre-emulsion with the remaining amount of initiator at 85°C, raise the temperature to 85°C under stirring, and stir at a speed of 120r / min After 30 minutes of dripping, keep the stirring paddle at an angle of 50° to the horizontal plane during the dropping process, and the height between the paddle and the bottom of the reaction vessel is 1 / 2 of the liquid level. After the dropping is completed, keep warm for 20 minutes to prepare a wate...

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Abstract

The invention claims to protect a kind of formaldehyde-free wood-based panel impregnated with adhesive film paper and its preparation method. After the paper is completely immersed in the formaldehyde-free impregnated adhesive for 30-60s, it is dried at 80-110°C, so that there is no excess on the paper surface. Adhesive and non-sticky shall prevail; after drying, the paper is completely immersed in the above adhesive for 20-40s, and then completely dried at 90-110°C. Choose formaldehyde-free wood-based panels, heat-press the impregnated film paper on the wood-based panels at a pressure of 4-6Mpa and a temperature of 140-220°C for 0.5-2min. The formaldehyde-free impregnating adhesive includes: 40-60 parts of water-based acrylic emulsion, 5-15 parts of organic amine, 1-5 parts of crosslinking agent, 1-5 parts of polyvinyl alcohol, 5-10 parts of filler water: 5-10 parts 10 servings. The artificial board prepared by the present application has no release of free formaldehyde, and truly realizes no formaldehyde.

Description

technical field [0001] The invention relates to a formaldehyde-free wood-based panel with impregnated decorative paper decoration and a preparation method thereof, belonging to the technical field of wood-based panel processing. Background technique [0002] Paper-impregnated wood-based panel is the most widely used and most important type of wood-based panel products. It is a decorative panel with particleboard, fiberboard and other wood-based panels as the base material and impregnated paper as the facing material. Compared with solid wood sawn timber, it has low raw material requirements, wide sources, high wood utilization rate, many product specifications, good processing performance, and diversified surface decoration. The surface has wear resistance, heat resistance, water resistance, chemical pollution resistance and smooth surface. Excellent properties such as smoothness and easy cleaning are widely used in the wood industry, especially in interior decoration, and p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B27D1/00B27D1/08D21H27/22D21H23/32D21H17/37D21H17/07D21H17/36D21H17/67D21H17/53
CPCB27D1/00B27D1/08D21H17/07D21H17/36D21H17/37D21H17/53D21H17/675D21H23/32D21H27/22
Inventor 龙玲徐建峰刘如
Owner RES INST OF FORESTRY NEW TECH CHINESE ACAD OF FORESTRY
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