One-time formed methanal-free compound panel and processing technique

A processing technology and a technology for composite boards, applied in wood processing equipment, lamination devices, lamination, etc., can solve the problems of the decline in the online pass rate of the boards and the increase in production costs, and achieve excellent surface quality, improved screw holding force, and equipment simple effect

Inactive Publication Date: 2014-08-13
富朗投资管理集团(香港)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to ensure that the surface quality of the board meets this requirement, relatively small raw materials are used to make the board during the production process. However, in order to make the board strength inde

Method used

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  • One-time formed methanal-free compound panel and processing technique
  • One-time formed methanal-free compound panel and processing technique

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0038] Example 1: Forming an aldehyde-free wheat straw board composite board at one time

[0039] (1) Material preparation:

[0040] The wheat straw (origin: Caoxian, Shandong) is crushed by a crushing device (screen with 7mm square holes) to obtain a raw material of wheat straw for the production of an aldehyde-free composite board with a moisture content of 12.6%.

[0041] The bottom and surface wood veneers are 2mm thick fast-growing poplar veneers (origin: Caoxian, Shandong), with a moisture content of 25%.

[0042] (2) Gluing: In a mixer, atomize the isocyanate (pMDI) adhesive and mix the wheat straw raw materials uniformly, the glue amount is 4% of the dry weight of the wheat straw raw materials; single-sided spray glue on the surface of poplar veneer , The spray amount is 15g / m 2 . The adhesive used was Huntsman Suprasec 5005.

[0043] (3) Pre-compression of paving:

[0044] Manufacture 18mm thick wheat straw composite board, take 1.0mm sanding allowance, that is, the unsanded b...

Example Embodiment

[0054] Example 2: Forming an aldehyde-free wheat straw board composite board at one time

[0055] (1) Material preparation:

[0056] The wheat straw (origin: Caoxian, Shandong) is crushed by a crushing device (the screen is 7mm square hole), and the raw material of wheat straw for the production of one-time forming non-formaldehyde composite board is prepared. The moisture content of the raw material is 11.2%.

[0057] The bottom and surface wood veneers are 1.7mm thick fast-growing eucalyptus veneers (origin: Nanning, Guangxi), with a moisture content of 19%.

[0058] (2) Gluing: In a mixer, atomize the isocyanate (pMDI) adhesive and mix the wheat straw raw materials uniformly, the glue amount is 3.7% of the dry weight of the wheat straw raw materials; single-sided spray glue on the surface of eucalyptus veneer , The spray volume is 20g / m 2 . The adhesive used was Huntsman Suprasec 5005.

[0059] (3) Paving pre-compression:

[0060] Manufacture a 20mm thick wheat straw composite board...

Example Embodiment

[0073] Example 3: Formaldehyde-free corn stalk board composite board at one time

[0074] (1) Material preparation:

[0075] The corn stalks (origin: Shuangcheng, Heilongjiang) are crushed by a crushing device (the screen is a 7mm round hole) to obtain a corn stalk raw material for the production of an aldehyde-free composite board with a moisture content of 13.6%.

[0076] The bottom and surface wood veneers are 1.7mm thick fast-growing eucalyptus veneers (origin: Nanning, Guangxi), with a moisture content of 19%.

[0077] (2) Gluing: In a mixer, atomize the isocyanate (pMDI) adhesive and evenly mix the corn stalk raw materials, the amount of glue is 3.0% of the absolute dry weight of the corn stalk raw materials; single-sided spray glue on the surface of eucalyptus veneer , The spray volume is 20g / m 2 . The adhesive used was Huntsman Suprasec 5005.

[0078] (3) Paving pre-compression:

[0079] Manufacture 18mm thick corn stalk composite board, take 1.0mm sanding margin, that is, the ...

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Abstract

The invention relates to a one-time formed methanal-free compound panel and a processing technique. The one-time formed methanal-free compound panel is characterized in that wood veneers are arranged on a bottom layer and a surface layer of the panel; a homogeneous crop straw layer or homogeneous forestry waste biomass layer is arranged as a middle layer; the bottom layer, the surface layer and the middle layer are at a time pressed and formed. According to the one-time formed methanal-free compound panel and the processing technique, three layers of structures are at a time pressed and formed, so that the space between every two layers is more compact and the layering phenomenon is difficult to occur. The processing technique is simpler.

Description

Technical field: [0001] The invention relates to a board manufactured by one-time molding with crop straw, formaldehyde-free adhesive and wood veneer as raw materials and a production process flow for manufacturing the board, which belongs to the technical field of wood-based boards. Background technique: [0002] As a by-product of agricultural production, crop straw is "inexhaustible and inexhaustible" and has high cellulose and lignin content. The use of crop straw to make wood-based panels has developed rapidly in China in recent years. [0003] Most of the current crop straw boards belong to the straw particle board category. Its product structure and production process are similar to those of wood particle board, but there are still many deficiencies in product quality, which largely restrict the development, promotion and application of crop straw board. [0004] At present, the types of crop straw boards that use pure crop straw as raw materials can be divided into ...

Claims

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Application Information

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IPC IPC(8): B27N3/02B27N3/08B32B21/12B32B37/06B32B37/10B32B37/12
Inventor 夏定权薛村禾
Owner 富朗投资管理集团(香港)有限公司
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