Method for bleaching Birdseye Maple bark

A bird's-eye maple and veneer technology, applied in the field of bleaching, can solve problems such as restricting the development of bird's-eye maple veneer processing, declining product grade quality, and reducing bird's eye clarity, and achieves natural texture and bird's eye clarity maintenance, size Stable, good looking results

Active Publication Date: 2021-02-02
广东炬盛新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional bleaching process requires a large amount of chemicals, high temperature and long time, and the COD of the sewage after bleaching is large. The clarity decreases, the grade quality of the bleached product decreases, and the long-term high-temperature bleaching may easily cause the veneer to deform after drying
The traditional bleaching process of bird's eye maple veneer restricts the development of bird's eye maple veneer processing

Method used

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  • Method for bleaching Birdseye Maple bark
  • Method for bleaching Birdseye Maple bark
  • Method for bleaching Birdseye Maple bark

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Present embodiment provides a kind of bird's-eye maple veneer bleaching method, comprises the following steps:

[0028] S1), the first bleaching

[0029] S101), reduction bleach formula

[0030]

[0031] S102), bleaching process

[0032] Put the bird's eye maple veneer into a 1000ml veneer bleaching box, add 0.5g of sodium hydroxide into the water, add 0.5g of sodium borohydride into a small container, stir evenly and dissolve completely, then inject into the veneer bleaching box, and then add sulfur dioxide Inject urea 2.0 into the veneer bleaching frame and stir evenly. A large number of bubbles are formed when it is just opened, and the reaction is violent. Slowly raise the temperature to 60°C and keep it warm for 2 hours.

[0033] S2), the second bleaching

[0034] S201), oxidation bleaching formula

[0035]

[0036] S202), bleaching process

[0037] Add 5g of cyclic adipic dihydrazide into a small container, pour hot water at 60°C to dissolve, stir to di...

Embodiment 2

[0039] Present embodiment provides a kind of bird's-eye maple veneer bleaching method, comprises the following steps:

[0040] S1), the first bleaching

[0041] S101), reduction bleach formula

[0042]

[0043]

[0044] S102), bleaching process

[0045] Put the bird's eye maple veneer into a 1000ml veneer bleaching box, add 0.75g of sodium hydroxide into the water, add 1.25g of sodium borohydride into a small container, stir evenly and completely dissolve, then inject into the veneer bleaching box, and then add sulfur dioxide Inject 5 g of urea into the veneer bleaching frame, stir evenly, a large number of bubbles are formed when it is just opened, and the reaction is violent, slowly raise the temperature to 60 ° C, and keep it warm for 2 hours.

[0046] S2), the second bleaching

[0047] S201), oxidation bleaching formula

[0048]

[0049] S202), bleaching process

[0050] Add 7.5g of cyclic adipate dihydrazide into a small container, inject hot water at 60°C t...

Embodiment 3

[0052] Present embodiment provides a kind of bird's-eye maple veneer bleaching method, comprises the following steps:

[0053]S1), the first bleaching

[0054] S101), reduction bleach formula

[0055]

[0056]

[0057] S102), bleaching process

[0058] Put the bird's eye maple veneer into a 1000ml veneer bleaching box, add 1g of sodium hydroxide to the water, add 2g of sodium borohydride into a small container, stir evenly and completely dissolve, then pour into the veneer bleaching box, and then add 8g of thiourea dioxide Pour into the veneer bleaching box, stir evenly, when it is just opened, a large number of bubbles are formed, the reaction is violent, slowly raise the temperature to 60 ° C, and keep it warm for 2 hours.

[0059] S2), the second bleaching

[0060] S201), oxidation bleaching formula

[0061]

[0062] S202), bleaching process

[0063] Add 10g of cyclic adipate dihydrazide into a small container, inject hot water at 60°C to dissolve, stir to dis...

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PUM

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Abstract

The invention provides a method for bleaching Birdseye Maple bark, which is a one-bath two-step method, does not increase new procedures, and comprises the following steps of: 1, performing reductiontreatment for 2 hours at 60 DEG C under a neutral condition by adopting a reducing agent to remove lignin and most of pigments of the lignin, then adding hydrogen peroxide, a hydrogen peroxide low-temperature activator cyclic adipic dihydrazide and a brightening agent 4BK, and carrying out low-temperature treatment for 3 hours at 65 DEG C under the condition of weak base pH 8-9. According to the maple treated by the new bleaching and whitening one-bath technology, the bleaching temperature is reduced by 10-20 DEG C, the bleaching time is saved by about 1-2 hours, and the bleaching whiteness isimproved by 20%. Compared with a traditional bleaching method, veneer lines and sparrow eye clarity are greatly improved, glossiness is improved, after the one-bath two-step method for bleaching thesparrow eye maple veneer, the appearance quality of the veneer is more attractive, natural lines and sparrow eyes are clearer, and the dried veneer is stable in size and not prone to deformation.

Description

technical field [0001] The invention relates to the technical field of bleaching, in particular to a method for bleaching bird's eye maple veneer. Background technique [0002] Natural bird's eye maple is a kind of exotic veneer, with clear and chaotic lines and light color, it is most suitable for hotel furniture, and it looks elegant and high-end. Maple and bird's eye are abundant in the United States and Canada. They are often used for interior decoration panels. They have a certain texture. The bird's eye is large and dense, and the quality of shadow is better. [0003] As a kind of wood, bird's eye is also the natural material that has the most affinity with human beings among the three major building materials. Wood veneer can be used as various furniture, automobile industry, etc. It has high usability, regeneration and important economic value. , as people's awareness of environmental protection becomes more and more profound, it is the future development trend to u...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B27K5/02
CPCB27K5/02
Inventor 李峥嵘刘昊吴均鑫王康康黄钢李养令邹洁
Owner 广东炬盛新材料科技有限公司
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