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Drying method for pometia pinnata solid wood floor blanks

A drying method and technology of floor slabs, applied in the direction of static material dryers, drying gas arrangement, local mixing dryers, etc., can solve the problems of ineffective killing of wood insect pests, harmful organisms spreading, troubles for consumers and producers, etc. , to achieve the effects of small drying residual stress, uniform moisture distribution, and improved product qualification rate

Inactive Publication Date: 2015-12-30
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, due to the low-temperature drying, it cannot effectively kill the pests in the wood, such as insects and eggs, especially the longan wood is imported wood, which will not only cause troubles for consumers and producers, but also cause the spread of harmful organisms abroad

Method used

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  • Drying method for pometia pinnata solid wood floor blanks
  • Drying method for pometia pinnata solid wood floor blanks

Examples

Experimental program
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Effect test

Embodiment 1

[0015] To dry longan floor blanks with a length of 940mm, a width of 140mm, a thickness of 25mm, and an initial moisture content of 59%, the final moisture content of drying is required to be 8%-10%.

[0016] The specific drying process includes the following steps:

[0017] 1) First use the internal spacer 2 with a length of 1000mm and a cross-section of 15×20mm and the side spacer 5 of 15×40mm to put 1 yard of the longan floor blank into a material pile with a width of 1000mm, wherein the cross-section is 15× 40mm edge spacer bar 5 is used for the end of the material pile. The materials are stacked into a material pile with a length of 940mm, a width of 1000mm and a height of 1200mm, such as figure 1 .

[0018] 2) place the pile of materials 14 figure 2 In the drying kiln 7 shown, and the top of the pile is used 300kg / m 2 Heap top weight 13 (as cement block, cast iron block etc.). Close the door 6, start the drying process afterwards: open the circulation fan 11, make ...

Embodiment 2

[0022] Drying the longan floor blank with a length of 1200mm, a width of 110mm, a thickness of 50mm, and a moisture content of 45% requires a final moisture content of 6-8%.

[0023] 1) First use the internal spacer 2 with a length of 1000mm and a cross-section of 15×20mm and the edge spacer 5 of 15×50mm to put 1 yard of the longan floor blank into a material pile with a width of 1000mm, wherein the cross-section is 15× 40mm edge spacer bar 5 is used for the end of the material pile. The materials are stacked into a material pile with a length of 940mm, a width of 1000mm and a height of 1200mm, such as figure 1 .

[0024] 2) place the pile of materials 14 figure 2 In the drying kiln 7 shown, and the top of the pile is used 500kg / m 2 Heap top weight 13 (as cement block, cast iron block etc.). Close the door 6, start the drying process afterwards: open the circulation fan 11, make the moist air in the drying kiln pass through the air passage in the material pile 14 with the...

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Abstract

The invention discloses a drying method for pometia pinnata solid wood floor blanks, and relates to the field of wood processing. Before drying is performed, the pometia pinnata solid wood floor blanks are firstly stacked and then placed in a drying kiln; the drying method comprises the steps that 1, preheating processing is performed, the temperature of dry balls is controlled at 50 DEG C-60 DEG C, and the temperature difference of the dry balls and wet balls is controlled to be 1 DEG C-2 DEG C, and the processing time is controlled in 6-12 hours; 2, when the moisture content is more than 30%, is at 25-30%, 20-25% and 15-20% and is lower than 15%, the different temperature of the dry balls and the different temperature differences of the dry balls and the wet balls are controlled; 3, stress relieving processing is performed, the temperature of the dry balls is controlled at 80 DEG C-88 DEG C, the temperature difference of the dry balls and the wet balls is controlled at 4 DEG C-5 DEG C, and the processing time is controlled in 8-15 hours; 4, the temperature is lowered to be less than 20 DEG C higher than the outdoor temperature, and in the temperature lowering process, the temperature difference of the dry balls and the wet balls is kept at 6 DEGC-10 DEG C, and then the pometia pinnata solid wood floor blanks which are even in moisture distribution, small in residual stress and not prone to deforming and cracking in later processing and using are obtained. In the drying process, insect pests in the floor blanks can be killed, and therefore the service life is prolonged.

Description

technical field [0001] The invention relates to the technical field of wood processing, in particular to a drying method for longan floor blanks. Background technique [0002] Longan (Pometiaspp.), commonly known as Tang wood, is mainly produced in Southeast Asia and Papua New Guinea, Sapinaceae, diffuse-porous wood, white sediment in the tube hole, air-dry density 0.50-0.70g / cm3, heartwood brown, red Brown, light sapwood, clear texture, good stability, wear resistance, termite resistance, suitable for furniture, interior decoration, carving, especially for flooring. Panlongyan flooring is a mid-range product in the market, with high cost performance, and is suitable for ordinary consumer groups. But longan wood is difficult to dry, and the high shrinkage rate leads to cracking and deformation during the drying process, and due to excessive drying residual stress, defects such as deformation and cracking occur in the floor during processing and product use. The quality of ...

Claims

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Application Information

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IPC IPC(8): F26B9/06F26B21/00
Inventor 周永东鲍咏泽高利祥
Owner RES INST OF FORESTRY NEW TECH CHINESE ACAD OF FORESTRY
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