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Floor blank cold pressing pre-treatment process

A pretreatment and cold pressing technology, applied in the direction of wood compression, manufacturing tools, wood processing appliances, etc., can solve the problems of short processing time, non-compliance, and the inability of wood stress to be completely eliminated, so as to improve the utilization rate and reduce deformation. rate effect

Active Publication Date: 2015-04-22
浙江百利达木业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above methods have certain shortcomings. The impregnating agent used in the former is an organic treatment agent, which enters the interior of the wood and reacts with the wood structure, which does not meet the natural environmental protection requirements of consumers. The stress cannot be completely eliminated, which reduces the utilization rate of wood and the effect of consumers after use

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Taking the blue eucalyptus produced in Yunnan as an example, the cold-pressing pretreatment process of the floor blank is introduced in detail.

[0017] A cold-press pretreatment process for floor blanks, comprising the following steps:

[0018] a, sheet material preparation: the fresh blue eucalyptus of harvesting is processed into the sheet material of 50cm thickness;

[0019] b. Spray drying of the board: (1) Put the board into the drying kiln, keep the humidity above 95%, slowly raise the center temperature of the board from room temperature to 42°C±1°C, and take 7 hours; (2) Put the temperature Keep it at 42°C±1°C, keep the humidity at 85%±1%, and keep it warm for 72 hours; (3) Keep the humidity at 55%±1%, and slowly raise the center temperature of the board to 58°C±1°C , it takes 12 hours; (4) Keep the humidity at 40%±1%, slowly raise the center temperature of the plate to 63℃±1℃, it takes 17 hours; (5) Keep the temperature at 63℃±1℃, The humidity is kept at 25%...

Embodiment 2

[0025] A cold-press pretreatment process for floor blanks, comprising the following steps:

[0026] Taking the red eucalyptus produced in Yunnan as an example, the cold-pressing pretreatment process of the floor blank is introduced in detail.

[0027] a, sheet material preparation: the fresh red eucalyptus of harvesting is processed into the sheet material of 50cm thickness;

[0028] b. Spray drying of the board: (1) Put the board into the drying kiln, keep the humidity above 95%, slowly raise the center temperature of the board from room temperature to 45°C±1°C, and take 7 hours; (2) Put the temperature Keep at 45°C±1°C, humidity at 90%±1%, holding time for 96 hours; (3) keep humidity at 60%±1%, slowly raise the center temperature of the plate to 60°C±1°C , it takes 12 hours; (4) Keep the humidity at 40%±1%, slowly raise the center temperature of the plate to 68℃±1℃, it takes 17 hours; (5) Keep the temperature at 68℃±1℃, The humidity is kept at 27%±1%, and the holding time ...

Embodiment 3

[0034] The following takes aspen produced in Northeast China as an example to introduce the cold-pressing pretreatment process of floor blanks in detail.

[0035] A cold-press pretreatment process for floor blanks, comprising the following steps:

[0036] a, sheet material preparation: the fresh poplar of felling is processed into the sheet material of 30cm thickness;

[0037] b. Spray drying of the board: (1) Put the board into the drying kiln, keep the humidity above 95%, and slowly raise the center temperature of the board from room temperature to 48°C±1°C for 5 hours; (2) Put the temperature Keep at 48°C±1°C, humidity at 90%±1%, holding time for 48 hours; (3) keep humidity at 60%±1%, slowly raise the center temperature of the plate to 60°C±1°C , it takes 12 hours; (4) Keep the humidity at 40%±1%, slowly raise the center temperature of the plate to 70℃±1℃, it takes 17 hours; (5) Keep the temperature at 70℃±1℃, The humidity is kept at 23%±1%, and the holding time is 96 hou...

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PUM

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Abstract

The invention discloses a floor blank cold pressing pre-treatment process. Floor blanks are subjected to pre-treatment by adopting a spraying, drying and then cold pressing method, internal stress of the floor blanks of eucalyptuses, poplars and the like is completely eliminated within short time, the stability of produced floors is ensured, and meanwhile the utilization rate of stress is greatly improved. Organic matter is not used in the plate pre-treatment process, and the floor blank cold pressing pre-treatment process is environment-friendly and safe.

Description

technical field [0001] The invention relates to a wood treatment process, in particular to a pretreatment process for floor blanks, and belongs to the technical field of wood treatment processes. Background technique [0002] In recent years, scholars at home and abroad have done a lot of research on the shrinkage defects of wood. They have done a lot of in-depth and meticulous work on the effect of humidity conditioning treatment on shrinkage; changes in the structure of shrinkage wood; shrinkage mechanism; shrinkage limit temperature; effect of prefreezing treatment on shrinkage, etc. After the results were published, it laid a good foundation for further research on the drying process to avoid shrinkage. [0003] Eucalyptus is one of the three fast-growing woods in the world. It grows fast, resulting in high internal stress, which brings great inconvenience to the processing and utilization of eucalyptus, especially in the drying process of eucalyptus, which is very easy...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B27M3/04B27M1/02B27K1/00
CPCB27M1/08B27M3/04B27N3/10
Inventor 张新芳沈新祥
Owner 浙江百利达木业有限公司
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