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Non-formaldehyde solid wood composite floor using low-density cottonwood veneers as base materials and manufacturing method thereof

A technology of solid wood composite flooring and poplar veneer, which is applied in the direction of manufacturing tools, wood layered products, wood processing equipment, etc., can solve the problems of high production speed, low density, and large proportion of young wood in poplar, and achieve high efficiency The effect of resource utilization, enhanced dimensional stability, and efficient value-added utilization

Active Publication Date: 2012-04-25
INST OF WOOD INDUDTRY CHINESE ACAD OF FORESTRY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the fast production speed of poplar wood, the large proportion of young wood, loose material, low density and easy deformation, it is difficult to apply it to floor production at present.
[0003] At present, most of the plywood and wood products based on plywood technology on the market, such as solid wood composite flooring, use adhesives containing formaldehyde. During the production and use of products, a large amount of free formaldehyde will be released, causing environmental pollution.

Method used

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  • Non-formaldehyde solid wood composite floor using low-density cottonwood veneers as base materials and manufacturing method thereof
  • Non-formaldehyde solid wood composite floor using low-density cottonwood veneers as base materials and manufacturing method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0055] The present invention utilizes the existing solid wood composite floor processing and production technology and equipment, uses recycled HDPE (high-density polyethylene) plastics as the bonding material, adopts the 0.6mm thick oak veneer veneer process, and takes the following steps:

[0056] 1. Select poplar logs with a diameter of 15-20 cm, cook at a low temperature of 20°C for 30 hours, then peel or slice them into poplar veneers (choose ones with a thickness of 1.5 mm or more), and then dry the veneers until they contain moisture Rate 15%;

[0057] 2. Slice the precious logs into decorative veneers, and place the veneers in the atmosphere to dry naturally to reduce the moisture content to below 25%;

[0058] 3. Sorting recycled plastics into HDPE, crushing and cleaning, and then granulating and blowing the scraps to make plastic films;

[0059] 4. Coat the dried poplar veneer with silane coupling agent; the amount of silane coupling agent selected is 10% of the wei...

Embodiment 2

[0065] In the production, the new HDPE is used as the production raw material, and the 0.6mm thick oak veneer veneer process is adopted, and the equipment and steps are similar to those of Example 1;

[0066] It’s just that the recycled plastic described in step 3 in Example 1 becomes the direct purchase of HDPE particle blown film; step 4 in Example 1 is used as a coating polyurethane coupling agent, and the coating amount is 1 to 20% of the weight of the film. After 15 minutes, all the other steps, equipment and parameters were the same as in Example 1.

Embodiment 3

[0068] In the production, recycled PP is used as the bonding material, and the 2mm thick oak veneer veneer process is adopted. The equipment and steps are the same as in Example 1, except that the production process parameters are changed, as follows:

[0069] Step 3: Sorting the recycled plastics into PP, crushing and cleaning, and then granulating the scraps and blowing them into plastic films. The remaining parameters are the same as in Example 1, except that the extrusion temperature is changed to 150-240°C, and the blown film temperature is changed to 160-250°C;

[0070] Step 5: Assemble the low-density poplar veneer and plastic film, and then heat-press and shape the poplar board to obtain the poplar board. The other parameters are the same as in Example 1, except that the hot pressing temperature is changed to 150-220°C.

[0071] Other steps, equipment and process parameter are all identical with embodiment 1.

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Abstract

The invention provides a manufacturing method of a non-formaldehyde solid wood composite floor using low-density cottonwood veneers as base materials. The non-formaldehyde solid wood composite floor is at least a cottonwood base plate assembly manufactured by combining following two raw materials: first, cottonwood veneers formed by stewing cottonwood logs at a low temperature of 10 to 50 DEC C, then rotary-cutting or slicing the cottonwood logs and afterwards drying the cottonwood logs, and second, plastic adhesive films manufactured by adopting thermoplastic resin; the treated cottonwood veneers are coated with coupling agents and are then assembled with the plastic adhesive films, and after hot-pressing and setting treatment, a cottonwood base plate is manufactured; afterwards, decorative thin wood is adopted as a surface layer and is combined with the cottonwood base plate assembly, and after cold-pressing, a floor blank is manufactured; and finally, the floor blank is milled, tenoned, slotted, and subjected to paint curing, and then a product is manufactured. Through using high polymer materials, from which no harmful substance escapes, in both the machining process and the use process, the environmentally friendly solid wood composite floor is produced.

Description

technical field [0001] The invention relates to a building material and a manufacturing method thereof, in particular to a formaldehyde-free solid wood composite floor and a manufacturing method thereof. Background technique [0002] As an important flooring material, solid wood composite flooring is widely used in interior decoration. Poplar is an important fast-growing and high-yield forest species in my country, with a wide planting area and large stock volume. However, due to the fast production speed of poplar, the large proportion of juvenile wood, loose material, low density and easy deformation, it is difficult to apply it to floor production at present. [0003] At present, most of the plywood and wood products based on plywood technology on the market, such as solid wood composite flooring, use adhesives containing formaldehyde. During the production and use of products, a large amount of free formaldehyde will be released and cause environmental pollution. In th...

Claims

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Application Information

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IPC IPC(8): B27M3/04B32B21/08E04F15/04
Inventor 王正常亮郭文静任一萍范留芬高黎
Owner INST OF WOOD INDUDTRY CHINESE ACAD OF FORESTRY
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