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 ...

Examples

Embodiment 1

[0022] A kind of softening method of bark, comprises the following steps:

[0023] (1) Bark finishing: cut the bark on both sides of the tree, split the bark into two and peel off the tree, then cut off the bark according to the required length, which is easy to handle, reduces the bark breakage rate, and benefits The infiltration of the treatment liquid improves the treatment efficiency and obtains the bark blank;

[0024] (2) Bark alkali soaking: put the bark base in a boiled edible alkali solution with a mass concentration of 1.7%, and soak it at 80~85°C for 6 hours to promote the solution to enter the bark tissue and increase the intercellular space. Increase the pH of the bark, soften the bark fiber, take it out, and obtain the bark with alkali foam;

[0025] (3) Pickling of bark: place the bark soaked in alkali in the treatment room, spray acetic acid solution with a volume fraction of 2.3% evenly on the bark soaked in alkali, spray it repeatedly 4 times, so that the ac...

Embodiment 2

[0038] A kind of softening method of bark, comprises the following steps:

[0039] (1) Bark finishing: cut the bark on both sides of the tree, split the bark into two and peel off the tree, then cut off the bark according to the required length, which is easy to handle, reduces the bark breakage rate, and benefits The infiltration of the treatment liquid improves the treatment efficiency and obtains the bark blank;

[0040] (2) Bark alkali soaking: put the bark base in a boiled edible alkali solution with a mass concentration of 1.8%, and soak it at 80~85°C for 7 hours to promote the solution into the bark tissue and increase the intercellular space. Increase the pH of the bark, soften the bark fiber, take it out, and obtain the bark with alkali foam;

[0041] (3) Pickling of bark: place the bark soaked in alkali in the treatment room, spray acetic acid solution with a volume fraction of 2.4% evenly on the bark soaked in alkali, spray it repeatedly 4 times, so that the acetic...

Embodiment 3

[0054] A kind of softening method of bark, comprises the following steps:

[0055] (1) Bark finishing: cut the bark on both sides of the tree, split the bark into two and peel off the tree, then cut off the bark according to the required length, which is easy to handle, reduces the bark breakage rate, and benefits The infiltration of the treatment liquid improves the treatment efficiency and obtains the bark blank;

[0056] (2) Bark alkali soaking: put the bark base in a boiled edible alkali solution with a mass concentration of 1.9%, and soak it at 80~85°C for 8 hours to promote the solution into the bark tissue and increase the intercellular space. Increase the pH of the bark, soften the bark fiber, take it out, and obtain the bark with alkali foam;

[0057] (3) Pickling of the bark: Put the alkali-soaked bark in the treatment room, evenly spray the acetic acid solution with a volume fraction of 2.5% on the alkali-soaked bark, and spray it repeatedly 4 times, so that the ac...

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 ...

Examples

Embodiment 1

[0022] A kind of softening method of bark, comprises the following steps:

[0023] (1) Bark finishing: cut the bark on both sides of the tree, split the bark into two and peel off the tree, then cut off the bark according to the required length, which is easy to handle, reduces the bark breakage rate, and benefits The infiltration of the treatment liquid improves the treatment efficiency and obtains the bark blank;

[0024] (2) Bark alkali soaking: put the bark base in a boiled edible alkali solution with a mass concentration of 1.7%, and soak it at 80~85°C for 6 hours to promote the solution to enter the bark tissue and increase the intercellular space. Increase the pH of the bark, soften the bark fiber, take it out, and obtain the bark with alkali foam;

[0025] (3) Pickling of bark: place the bark soaked in alkali in the treatment room, spray acetic acid solution with a volume fraction of 2.3% evenly on the bark soaked in alkali, spray it repeatedly 4 times, so that the ac...

Embodiment 2

[0038] A kind of softening method of bark, comprises the following steps:

[0039] (1) Bark finishing: cut the bark on both sides of the tree, split the bark into two and peel off the tree, then cut off the bark according to the required length, which is easy to handle, reduces the bark breakage rate, and benefits The infiltration of the treatment liquid improves the treatment efficiency and obtains the bark blank;

[0040] (2) Bark alkali soaking: put the bark base in a boiled edible alkali solution with a mass concentration of 1.8%, and soak it at 80~85°C for 7 hours to promote the solution into the bark tissue and increase the intercellular space. Increase the pH of the bark, soften the bark fiber, take it out, and obtain the bark with alkali foam;

[0041] (3) Pickling of bark: place the bark soaked in alkali in the treatment room, spray acetic acid solution with a volume fraction of 2.4% evenly on the bark soaked in alkali, spray it repeatedly 4 times, so that the acetic...

Embodiment 3

[0054] A kind of softening method of bark, comprises the following steps:

[0055] (1) Bark finishing: cut the bark on both sides of the tree, split the bark into two and peel off the tree, then cut off the bark according to the required length, which is easy to handle, reduces the bark breakage rate, and benefits The infiltration of the treatment liquid improves the treatment efficiency and obtains the bark blank;

[0056] (2) Bark alkali soaking: put the bark base in a boiled edible alkali solution with a mass concentration of 1.9%, and soak it at 80~85°C for 8 hours to promote the solution into the bark tissue and increase the intercellular space. Increase the pH of the bark, soften the bark fiber, take it out, and obtain the bark with alkali foam;

[0057] (3) Pickling of the bark: Put the alkali-soaked bark in the treatment room, evenly spray the acetic acid solution with a volume fraction of 2.5% on the alkali-soaked bark, and spray it repeatedly 4 times, so that the ac...