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Wood surface bleaching technology and its special-purpose apparatus

A veneer and process technology, applied in the field of wood bleaching, can solve problems such as unseen, low production efficiency, large investment, etc., and achieve the effects of stabilizing quality, improving efficiency, and improving efficiency and effect.

Inactive Publication Date: 2008-02-13
CHENGDU CANYA WOOD IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the wood bleaching equipment sold in the market has large investment, low production efficiency, unstable bleaching effect, and cannot fully meet the requirements of veneer bleaching.
That is to say, there is no special industrial equipment for veneer bleaching on the market

Method used

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  • Wood surface bleaching technology and its special-purpose apparatus
  • Wood surface bleaching technology and its special-purpose apparatus
  • Wood surface bleaching technology and its special-purpose apparatus

Examples

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Embodiment Construction

[0024] Wood veneer bleaching process of the present invention, carry out according to the following steps: a) by 1000ml water dissolving 2-5 gram hydrogen peroxide, 3 gram sodium hydroxide, 1 gram sodium silicate, 0.05 gram magnesium chloride, prepare bleaching solution in No. 1 bleaching pool 5 : When preparing, first dissolve sodium hydroxide, sodium silicate, and magnesium chloride in water to obtain a solution, then add the sodium hydroxide solution to the magnesium chloride solution, then add the sodium silicate solution, and finally add hydrogen peroxide; b) add the veneer Put into veneer bleaching frame, put into bleaching tank, make bleaching solution submerge veneer completely; c) adopt pump to make the bleaching solution in the pool be in continuous circulation through circulation pipeline (referring to Fig. 9, No. 1 bleaching tank 5 is provided with inlet Liquid port 5a and liquid outlet port 5b, adopt pump to do forced circulation through pipeline); d) At the same t...

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Abstract

A bark bleaching process; the steps are as follows that hydrogen peroxide, sodium hydroxide, sodium silicate and magnesium chloride are taken in I bleacher according to a certain proportion to make bleaching liquid: the bark is encased in a bark bleaching frame and the frame is soaked in the bleacher; a pump is adopted to continuously circulate the bleaching liquid in the bleacher; at the same time, steam is input for heating the bleaching liquid and the temperature is kept constant between 60 to 70 Celsius degrees; the constant temperature is kept for 4 to 6 hours; the bark bleaching frame is taken out of the in I bleacher and put into II bleacher filled with oxalic acid solution; a liquid compulsory circulation device is used to make the liquid in the bleacher continuously circulate; the bark bleaching frame is taken out after the frame is soaked for continuous 30 minutes; the bleaching frame is washed with pressed clean water and the drying treatment is implemented at last. The present invention also discloses a special bark bleaching frame and snakelike parting strip for angle steel welding. The present invention boasts of low investment on equipment, high production efficiency and excellent bleaching effect.

Description

technical field [0001] The invention relates to the technology of wood bleaching, in particular to the bleaching process of veneer for decoration and the special utensil for containing the veneer during bleaching. Background technique [0002] With its beautiful and generous natural patterns and unique texture, wooden products make people feel close to nature and return to nature. However, the reality is that the quantity of high-quality wood is small and the price is high, which makes it difficult to meet market demand. People make very thin veneer from high-quality wood with ornamental value, and stick the veneer on the wooden surface made of ordinary wood to make it have a high-quality appearance. The bleaching of veneer is an important link in the industrial processing of veneer. The bleaching of veneer is to decolorize the chromophoric group or auxochromic group and the components related to coloring through oxidation, reduction and degradation of bleaching agent. Pur...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B27K5/02
Inventor 张蕾张华君郝明生
Owner CHENGDU CANYA WOOD IND
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