Softening method for bark

Abstract

The invention relates to the technical field of wood product processing, and discloses a softening method for bark. The softening method for the bark comprises bark arrangement, bark alkali immersing, bark acid pickling, bark blanching, bark drying and bark softening. The method is simple, the operation is convenient, and a large batch of bark processing can be conducted. The flexibility of the processed bark is increased by 27.3%, cracking rate is decreased to 4.6%, the bark usage rate is obviously improved, and economic income is increased by 15.2%; the bark is made into a bark blank according to the requirement, processing is facilitated, the bark crushing rate is reduced, the infiltration of the treatment solution is facilitated, and the processing efficiency is improved; the bark blank is placed into a hot edible alkaline solution, gaps between cells are increased, the pH of the bark is increased, and the bark fiber is softened; and an acetic acid solution is sprayed onto the alkali immersed bark, and freezing and unfreezing are conducted after spraying, so that the acetic acid solution quickly penetrates into the bark, residual edible alkali in the bark can be neutralized, after an acid-base neutralization reaction, cell gaps can be increased, and a fibrous structure can be rapidly softened.

Description

technical field [0001] The invention mainly relates to the technical field of wood product processing, in particular to a method for softening bark. Background technique [0002] Bark, that is, the bark that can be peeled off from the trunk during timber harvesting or processing, is still a kind of "treasure" in terms of economic value, and it is a pity to be discarded and burned in vain. Some people calculate that the bark accounts for about 10% of the xylem of various trees. At present, there are about 250 million cubic meters of bark in the world that can be used every year, but only a small part has been used, causing great economic losses; The softened bark can be prepared by artists into bark paintings, and can also be prepared as decorative materials for housing installations, turning waste into treasure, natural, healthy, environmentally friendly, and durable; but because bark is rarely used, Therefore, the bark softening method that is reported is also very few at ...

AI Technical Summary

Problems solved by technology

Some people calculate that the bark accounts for about 10% of the xylem of various trees. At present, there are about 250 million cubic meters of bark in the world that can be used every year, but only a small part has been used, causing great economic losses; The softened bark can be prepared by artists into bark paintings, and can also be prepared as decorative materials for housing installations, turning waste into treasure, natural, healthy, environmentally friendly, and durable; but because bark is rarely used, Therefore, there are very few bark softening methods reported at present.