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A pearl bleaching process

A pearl and craft technology, applied in jewelry, clothing, applications, etc., can solve the problems of unsatisfactory bleaching effect, darkening of pearl color, easy damage to pearls, etc., to reduce damage, uniform color and enhance activation ability.

Inactive Publication Date: 2019-12-10
浙江梵沛珍珠股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The raw pearls collected from cultured pearl shells, because the outer surface is attached with body fluids and dirt, if left for too long, the colloidal calcium carbonate and organic matter on the pearl surface will condense, the pearl’s color will become dark, and it will be oxidized and deteriorated. Quality, so it should be processed in time after harvesting. The original beads need to go through a series of fine processing processes such as cleaning → picking beads → brightening → punching → color separation → boiling beads → bleaching or dyeing to become a decoration with technological value. Bleaching is the most critical process in a series of pearl processing procedures, but the existing bleaching process, the bleaching effect is not ideal, and it is easy to damage the pearls

Method used

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  • A pearl bleaching process
  • A pearl bleaching process

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] a) Preparation of bleach solution: mix uniformly 30% hydrogen peroxide, acetic acid, methanol, ether, benzene, sodium bicarbonate, additives, sodium lauryl sulfate and triethanolamine, the mass ratio of each component 10 parts of 30% hydrogen peroxide; 5 parts of acetic acid; 300 parts of methanol; 3 parts of ether; 3 parts of benzene; 0.5 parts of sodium bicarbonate; 0.3 parts of additives; The auxiliary agent is an aqueous solution of phytic acid and sodium molybdate, the weight percentage of the phytic acid is 0.6%, and the weight percentage of sodium molybdate is 0.1%;

[0018] b) Pour the bleaching solution obtained in step a) into the bleaching device, and then pour the pearls into the bleaching device for soaking. The bleaching solution is replaced every 40 hours, the number of times of replacement is 4 times, and the soaking temperature is 20° C.; then washed with water, dry.

Embodiment 2

[0020] a) Preparation of bleach solution: mix uniformly 30% hydrogen peroxide, acetic acid, methanol, ether, benzene, sodium bicarbonate, additives, sodium lauryl sulfate and triethanolamine, the mass ratio of each component 12 parts of 30% hydrogen peroxide; 8 parts of acetic acid; 350 parts of methanol; 4 parts of ether; 4 parts of benzene; 1 part of sodium bicarbonate; 0.4 parts of additives; 0.3 parts of sodium lauryl sulfate; The auxiliary agent is an aqueous solution of phytic acid and sodium molybdate, the weight percentage of the phytic acid is 0.6%, and the weight percentage of sodium molybdate is 0.1%;

[0021] b) Pour the bleaching solution obtained in step a) into the bleaching device, and then pour the pearls into the bleaching device for soaking. The bleaching solution is replaced every 45 hours, the number of times of replacement is 3 times, and the soaking temperature is 28 ° C; dry.

Embodiment 3

[0023] a) Preparation of bleach solution: mix uniformly 30% hydrogen peroxide, acetic acid, methanol, ether, benzene, sodium bicarbonate, additives, sodium lauryl sulfate and triethanolamine, the mass ratio of each component 15 parts of 30% hydrogen peroxide; 10 parts of acetic acid, 350 parts of methanol; 5 parts of ether; 5 parts of benzene; 1.5 parts of sodium bicarbonate; 0.5 parts of additives; 0.6 parts of sodium lauryl sulfate; The auxiliary agent is an aqueous solution of phytic acid and sodium molybdate, the weight percentage of the phytic acid is 0.6%, and the weight percentage of sodium molybdate is 0.1%;

[0024] b) Pour the bleaching solution obtained in step a) into the bleaching device, and then pour the pearls into the bleaching device for soaking. The bleaching solution is replaced every 50 hours, the number of times of replacement is 2 times, and the soaking temperature is 30° C.; then washed with water, dry.

[0025] refer to figure 1 , 2 , the bleaching ...

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Abstract

The invention discloses a pearl bleaching process, which comprises the following steps of (a) preparing bleaching liquid: uniformly mixing 10 to 15 parts of 30-percent hydrogen peroxide, 5 to 10 partsof acetic acid, 300 to 350 parts of methyl alcohol, 3 to 5 parts of diethyl ether, 3 to 5 parts of benzene, 0.5 to 1.5 parts of sodium bicarbonate, 0.3 to 0.5 part of accessory ingredients, 0.2 to 0.6 part of lauryl sodium sulfate and 1 to 1.5 parts of triethanolamine according to the mass proportion; (b) pouring the bleaching liquid obtained in the step (a) into a bleaching device; next, pouringthe pearl into the bleaching device to be soaked; replacing the bleaching liquid every 40 to 50 hours, wherein the replacing times is 2 to 4 times, and the soaking temperature is 20 to 30 DEG C; then, performing water washing and drying. Compared with the prior art, the pearl bleaching process has the advantages that the bleaching effect is good; the pearl damage is reduced; the efficiency is improved; the color and luster are uniform.

Description

【Technical field】 [0001] The invention relates to a pearl bleaching process, which belongs to the technical field of pearl processing. 【Background technique】 [0002] The raw pearls collected from cultured pearl shells, because the outer surface is attached with body fluids and dirt, if left for too long, the colloidal calcium carbonate and organic matter on the pearl surface will condense, the pearl’s color will become dark, and it will be oxidized and deteriorated. Quality, so it should be processed in time after harvesting. The original beads need to go through a series of fine processing processes such as cleaning → picking beads → brightening → punching → color separation → boiling beads → bleaching or dyeing to become a decoration with technological value. Bleaching is the most critical process in a series of pearl processing procedures, but the existing bleaching process has an unsatisfactory bleaching effect and easily damages the pearls. 【Content of invention】 ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A44C27/00
CPCA44C27/00A44C27/001
Inventor 戚鸟定
Owner 浙江梵沛珍珠股份有限公司