CN113425055A

CN113425055A - Method for keeping luster and color of pearl

Info

Publication number: CN113425055A
Application number: CN202110945498.9A
Authority: CN
Inventors: 童银洪; 刘永; 纪德安; 肖松丰
Original assignee: Zhanjiang Ocean University Pearl Co ltd; Guangdong Ocean University
Current assignee: Zhanjiang Ocean University Pearl Co ltd; Guangdong Ocean University
Priority date: 2021-08-17
Filing date: 2021-08-17
Publication date: 2021-09-24
Anticipated expiration: 2041-08-17
Also published as: CN113425055B

Abstract

The invention relates to the technical field of pearl processing, and discloses a method for maintaining luster and color of pearls, comprising the following steps: Step 1: polishing the pearls in a barrel polishing machine or a vibration polishing machine; Cook for 3 to 5 minutes to remove the wax on the pearl surface; then wipe off the water on the pearl surface with a clean soft cloth, and then place it in a blast oven at 40 to 45°C to dry; Step 2: Use an automatic sprayer to spray The treated pearl surface is sprayed and UV cured for many times to form a UV film with a thickness of 0.10-0.15mm on the surface of the pearl; Step 3: Soak the coated pearl in pure water at 35-40°C After 3 to 5 hours, wipe off the water on the pearl surface with a clean soft cloth and dry it. The film is transparent and does not hinder the viewing of pearls, and the film plays a protective role to prevent the skin sweat and other substances from contacting the pearls and corroding the pearls. life.

Description

Method for keeping luster and color of pearl

Technical Field

The invention relates to the technical field of pearl processing, in particular to a method for keeping luster and color of pearls.

Background

Pearl is an organic gem, mainly produced in seawater pearl shellfish and freshwater mussel. The pearl is mineral bead containing calcium carbonate generated by endocrine action of shellfish, and is formed by gathering a large amount of tiny aragonite crystals. The pearls are various in types, shapes and colors. In the international gem world, pearls are also listed as lucky stones for june birthdays, and commemorative stones for marrying thirteen and thirty years. Pearls with magnificent colors and elegant qualities, symbolize health, purity, richness and happiness, and have been favored by people since ancient times. However, the beauty of the pearl is not unique, and the pearl just taken out from the pearl shell body has a thin film of organic matter and a small amount of flaws on the surface, and needs to be processed by bleaching, polishing, brightening and the like, so that the beauty of the pearl is fully presented to people.

Although the pearl is beautiful, the color and luster of the pearl can be greatly changed when people wear the pearl. The pearl yellow of old people means that the pearl becomes yellow after being worn for a long time. In addition, the luster of the pearl can change after the pearl is worn, and the change is particularly obvious on the fresh water pearl.

After the pearl jewelry is purchased, wearing needs to be reduced, and careful care needs to be carried out, so that the occurrence of color change and light loss of the pearls can be delayed. This is contrary to the original intention of people to buy and wear pearls and to show charm and nobility, resulting in that either pearls are worn less frequently or pearls quickly change color and lose light.

The reason for discoloration and light loss of pearls is that the pearls are in contact with the skin in the wearing process of people, and the color organic substances or other organic substances in the pearls are corroded by sweat and cosmetics on the skin. Therefore, pearl processing enterprises need to perform the light and color preservation treatment on pearls on the basis of the existing processing procedures, so as to improve the use value of the pearls.

Chinese invention patent CN101642316B (published as 2011, 09/07) discloses a method for fixing color and brightening colored pearls, which comprises preparing a solution for fixing color and brightening colored pearls, placing the colored pearls in the solution, and alternately soaking at 0-15 deg.c and 38-43 deg.c to substantially change the hardness, color and luster and luminosity of the colored pearls. Although the patent can improve the hardness, the color and the luminosity of the pearl, the sweat of the skin can still corrode the pearl along with the use of the pearl, so that the color and the luminosity of the pearl become dark and lose color gradually along with the time.

Disclosure of Invention

The invention aims to provide a pearl gloss and color retention method which can prevent the color change and the light loss of pearls and slow down the abrasion of the pearls.

In order to achieve the purpose, the invention provides a pearl gloss and color retention method, which comprises the following steps:

the method comprises the following steps: pretreatment: polishing pearls in a barrel type polishing machine or a vibration polishing machine; boiling the pearls in purified water for 3-5 minutes, and removing wax on the surfaces of the pearls; wiping off water on the surfaces of the pearls by using clean soft cloth, and drying in a blast oven at the temperature of 40-45 ℃;

step two: pearl coating: forming a layer of UV adhesive film with the thickness of 0.10-0.15 mm on the surface of the pearl by using an automatic spraying machine through multiple spraying and UV curing methods on the surface of the pretreated pearl;

step three: purifying: and (3) soaking the coated pearls in purified water at 35-40 ℃ for 3-5 h, wiping off water on the surfaces of the pearls by using clean soft cloth, and drying.

As a preferred scheme, the selected pearls are free pearls or pearl with a shell with the grain diameter larger than 8 mm.

Preferably, in the second step, after the UV glue is sprayed on the pearls, the pearls are irradiated and cured by an ultraviolet lamp with the power of 60-80W for 2-3 min, and the distance between the pearls and the ultraviolet lamp is 30-50 cm.

Compared with the prior art, the invention has the beneficial effects that:

according to the invention, the UV adhesive film is covered on the surface of the pearl, the UV adhesive film is transparent, the original luster and color of the pearl can be kept, the ornamental aesthetic feeling of the pearl is not influenced, the adhesive film can play a role in protection, the pearl is prevented from being corroded by external substances such as sweat of skin and the like which are contacted with the pearl, the color change and the light loss of the pearl can be prevented, the abrasion of the pearl can be slowed down, the effects of keeping the light and the color are achieved, and the service life of the pearl is prolonged.

Drawings

FIG. 1 is a flow chart of a method for retaining luster and color of a pearl according to an embodiment of the present invention.

Detailed Description

The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.

As shown in fig. 1, a method for retaining light and color of a pearl according to a preferred embodiment of the present invention includes the following steps:

the method comprises the following steps: pretreatment: polishing pearls in a barrel type polishing machine or a vibration polishing machine; boiling the pearls in purified water for 3-5 minutes, and removing wax on the surfaces of the pearls; then wiping off water on the surfaces of the pearls by using a clean soft cloth, and then placing the pearls in a blast oven at the temperature of 40-45 ℃ for drying.

Step two: pearl coating: forming a layer of UV adhesive film with the thickness of 0.10-0.15 mm on the surface of the pearl by using an automatic spraying machine through multiple spraying and UV curing methods on the surface of the pretreated pearl; the UV curing condition is that the power of an ultraviolet lamp is 60W-80W, the distance is 30 cm-50 cm, and the time is 2-3 min.

This embodiment is through covering the one deck glued membrane on the surface of pearl, and the glued membrane is transparent, can keep original gloss and color of pearl, does not hinder the aesthetic feeling of vwatching of pearl, and the glued membrane can play the guard action, avoids foreign matter such as the sweat of skin to corrode the pearl with pearl contact, can prevent that pearl from discolouring, the light loss, and can slow down pearl wearing and tearing, plays the effect of keeping light, keeping color, the life of extension pearl.

The wax on pearl surface is fully got rid of through poaching to this embodiment, can get rid of other impurity on surface simultaneously, makes the pearl purer, improves gloss and color, simultaneously, can make the UV glue of spraying inseparabler with pearl surface bonding ground, ensures that the bonding strength of the two is high, is unlikely to produce the separation of UV glued membrane from pearl surface and drops the phenomenon.

The pearl film is coated with UV glue which is transparent, non-discoloring and non-toxic, so that the pearl coated with the glue film can be worn on a human body without causing harm to the human body. Moreover, the UV adhesive has the advantages of high bonding strength, complete transparency after curing, no yellowing or whitening of the product for a long time, low temperature resistance, high humidity resistance, complete non-toxicity after curing and the like, can be sprayed and applied by an automatic machine, is convenient to operate, and meets the requirements of gloss retention and color retention of pearls.

Furthermore, the pearls selected in the embodiment are free pearls or pearl with a shell, the particle size of which is larger than 8mm, and the spraying of the UV adhesive film is convenient. In addition, in the second step, after the pearls are sprayed with the UV glue, the pearls are irradiated by an ultraviolet lamp with the power of 60W-80W so that the sprayed liquid UV glue is fully cured to form a UV glue film, the irradiation time is 2-3 min, and the distance between the pearls and the ultraviolet lamp is 30 cm-50 cm.

In summary, the embodiments of the present invention provide a method for protecting pearls from being discolored and discolored, which includes covering a UV adhesive film on the surface of a pearl, wherein the UV adhesive film is transparent, so as to maintain the original luster and color of the pearl, and not to hinder the aesthetic feeling of the pearl, and the adhesive film can protect the pearl, so as to prevent the pearl from being corroded by external substances such as sweat on the skin and the like contacting the pearl, thereby preventing the pearl from being discolored and discolored, and slowing down the abrasion of the pearl, thereby protecting the pearl from being discolored and discolored, and prolonging the service life of the pearl.

The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.

Claims

1. a pearl luster-preserving, color-preserving method, is characterized in that, comprises the steps:

Step 1: Pre-treatment: Polish the pearls in a barrel polishing machine or a vibrating polishing machine; then boil the pearls in pure water for 3 to 5 minutes to remove the wax on the surface of the pearls; then wipe the pearls with a clean soft cloth The water on the surface is then dried in a blast oven at 40-45°C;

Step 2: Pearl coating: use an automatic sprayer to spray and UV cure the pre-treated pearl surface multiple times to form a UV film with a thickness of 0.10-0.15mm on the pearl surface;

Step 3: Purification: Soak the coated pearls in pure water at 35-40°C for 3-5 hours, wipe off the water on the surface of the pearls with a clean soft cloth, and dry.

2 . The method for preserving gloss and color of pearls according to claim 1 , wherein the selected pearls are free pearls or shell-attached pearls with a particle diameter greater than 8 mm. 3 .

3. The pearl luster-preserving and color-preserving method according to claim 1, wherein in step 2, the UV glue sprayed on the pearl surface adopts a UV lamp with a power of 60W～80W to irradiate and solidify the pearl, and the irradiation time is 2 ~3min, the distance between the pearl and the UV lamp is 30cm ~ 50cm.