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Manufacturing process for jewelry protective film

A production process and technology of protective film, which is applied in the field of production process of jewelry protective film, can solve the problems of darkening of color, jade loss, fading, etc., and achieve the effects of reducing thermal decomposition rate, increasing oxygen index, and inhibiting combustion

Active Publication Date: 2019-10-25
东莞市熙宝福五金科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The maintenance of jade is very particular. The existing jewelry protective film is generally coated with a metal film on the surface of the jewelry. When it is close to the fire, the color paste will fade away. If the ancient jade is smoked or roasted by fire, the quality of the jade will be damaged, the color will become darker, or even fade. In addition, jade wares should avoid high temperature. Quality, in daily life, such as gas flames encountered in cooking, open flames of lighters, especially in fires, will cause irreversible loss of jade, therefore, it is very important for the heat insulation and flame retardant protection of jade

Method used

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  • Manufacturing process for jewelry protective film
  • Manufacturing process for jewelry protective film
  • Manufacturing process for jewelry protective film

Examples

Experimental program
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Effect test

Embodiment 1

[0044] A manufacturing process of a jewelry protective film, the protective film is composed of the following raw materials in parts by weight: 100 parts of modified polyurethane, 5 parts of polyethylene glycol and 100 parts of isopropanol;

[0045] The specific production process is as follows: heat the modified polyurethane and polyethylene glycol to 80°C to melt, stir and mix for 30 minutes, then slowly add isopropanol, and cool down to 35°C while stirring to obtain the jewelry protection liquid. At this temperature, Use a spray gun to evenly spray jewelry protective liquid on the surface of jewelry, let it dry naturally for 2 hours, and obtain a jewelry protective film with a thickness of 8-15nm.

Embodiment 2

[0047] A manufacturing process of a jewelry protective film, the protective film is composed of the following raw materials in parts by weight: 100 parts of modified polyurethane, 10 parts of polyethylene glycol and 100 parts of isopropanol;

[0048] The specific production process is as follows: heat the modified polyurethane and polyethylene glycol to 85°C to melt, stir and mix for 30 minutes, then slowly add isopropanol, and cool down to 40°C while stirring to obtain the jewelry protection liquid. At this temperature, Use a spray gun to evenly spray jewelry protective liquid on the surface of jewelry, let it dry naturally for 2 hours, and obtain a jewelry protective film with a thickness of 8-15nm.

Embodiment 3

[0050] A manufacturing process of a jewelry protective film, the protective film is composed of the following raw materials in parts by weight: 100 parts of modified polyurethane, 7 parts of polyethylene glycol and 100 parts of isopropanol;

[0051] The specific production process is as follows: heat the modified polyurethane and polyethylene glycol to 82°C to melt, stir and mix for 30 minutes, then slowly add isopropanol, and cool down to 39°C while stirring to obtain the jewelry protection liquid. At this temperature, Use a spray gun to evenly spray jewelry protective liquid on the surface of jewelry, let it dry naturally for 1 hour, and obtain a jewelry protective film with a thickness of 8-15nm.

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Abstract

The invention discloses a manufacturing process for a jewelry protective film. The manufacturing process is composed of the following raw materials in parts by weight: 100 parts of modified polyurethane, 5 to 10 parts polyethylene glycol and 100 parts of isopropanol. The manufacturing process comprises the following concrete steps: heating prepared modified polyurethane and polyethylene glycol to80 to 85 DEG C for melting, carrying out mixing under stirring for 30 min, then slowly adding the isopropanol, carrying out cooling to 35 to 40 DEG C under stirring so as to obtain a jewelry protective liquid, uniformly spraying the jewelry protective liquid onto the surface of jewelry at a same temperature, and carrying out natural drying for 1 to 2 h so as to obtain the jewellery protective film. According to the invention, the polyurethane has strong adhesiveness; a coating film has excellent performances like wear resistance, water resistance and chemical resistance and has poor flame-retardant performance; the modified polyurethane prepared by using the method provided by the invention has excellent water resistance and high-temperature flame retardancy; thus, the jewelry protective film prepared by using the manufacturing process provided by the invention is greatly improved in high-temperature stability and oxidation resistance.

Description

technical field [0001] The invention belongs to the technical field of jewelry maintenance, and in particular relates to a manufacturing process of a jewelry protective film. Background technique [0002] Jewelry has a broad sense and a narrow sense. Jewelry in the narrow sense refers to jade products. Jewelry in the broad sense includes gold, silver, and natural materials (minerals, rocks, creatures, etc.). Therefore, there was a saying of "gold and silver jewelry" in ancient times, which distinguished gold and silver from jewelry. However, with the development of society and economy, in addition to natural gemstones and artificial gemstones, the concept of jewelry should be expanded to include gold, silver, jewelry, etc. The industry dealing in these items is collectively referred to as the "jewellery industry". The scope of "jewelry" is much larger than the generalized concept of "gemstone". Gemstones in a broad sense generally refer to those raw materials that are sui...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D5/18C09D175/04A44C27/00C08G18/32C08G18/62
CPCC09D5/18C09D175/04A44C27/007C08G18/3897C08G18/6212C08L71/02
Inventor 黄向云
Owner 东莞市熙宝福五金科技有限公司
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