Demolding method for artificial MDI glue board

A wood-based panel and demoulding technology, applied in household components, flat products, household appliances, etc., can solve the problem of not being able to completely eliminate the sticking of MDI glue wood-based panels to the mold, and achieve the effect of eliminating production stoppage and simple operation.

Inactive Publication Date: 2005-09-28
SHANGHAI COMPAK ENVIRONMENTAL PROTECTION EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention provides a demoulding method for MDI glue wood-based panels, which solves the technical problem that existing mold release agents cannot completely prevent MDI glue wood-based panels from sticking to the mold

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0015] The present invention uses the existing Kangbai No. 2-4 mold release agent produced by Shanghai Guling Environmental Protection Board Industry Co., Ltd., wherein the main components of Kangbai No. 2 mold release agent are isopropanol, ethylene glycol, ether and naphthyl methanol Polymers, the main components of Kangbai No. 3 mold release agent are isopropanol, methanol and butanol, and the main ingredients of Kangbai No. 4 mold release agent are polyacrylate and aminosiloxane. These three mold release agents are currently all Used in the production line to spray on the surface of the backing plate and heat press plate to form a non-stick layer.

[0016] In the present invention, the No. 2 and No. 3 release agents of Kangbai are first applied on the backing plate and the hot pressing plate to form a semi-permanent non-stick layer. Wrap an abrasive belt of more than 100 meshes to polish the surface, then clean the polished liner and hot-pressed surface with acetone, and a...

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PUM

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Abstract

The demolding method for artificial MDI glue board with Kangbai demolding agent Nos. 2, 3 and 4 includes the following steps: 1) painting Kangbai demolding agent No. 2 homogeneously onto the lining board and hot pressing board and stoving at 170-185 deg.c for 25-40 min; 2) painting Kangbai demolding agent No. 3 homogeneously onto the lining board and hot pressing board through processing in the step 1) and stoving at 170-185 deg.c for 3-4.5 hr; 3) spraying Kangbai demolding agent No. 4 to lining board before spreading material; and 4) spraying Kangbai demolding agent No. 4 to the surface of spread material. The said method makes demolding complete.

Description

Technical field: [0001] The invention relates to a manufacturing method of an artificial board, in particular to a demoulding method for an artificial board made of a straw particle material soaked with an MDI binder. Background technique: [0002] In the past ten years, the technology of using discarded crop straw to replace traditional wood to make boards has made great progress, and it has also changed from the formaldehyde glue that is harmful to the human body to the non-toxic side effect of isocyanate. Agents, especially the MDI glue with the chemical name of polyphenyl-pdymethylene-polyisolyemhte (polyphenyl-pdymethylene-polyisolyemhte) has good bonding performance and can reduce the amount of addition, but this kind of MDI glue makes it difficult for the wood-based panel to be separated from the liner. , Defilming on the hot pressing plate, in order to improve this situation, the methods commonly used at present are: [0003] 1. Mix the release agent into the board-...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B27N3/08
Inventor 龚挺
Owner SHANGHAI COMPAK ENVIRONMENTAL PROTECTION EQUIP CO LTD
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