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PET acid and alkali resistant protective film and preparation method thereof

A protective film, acid and alkali-resistant technology, applied in the field of protective film materials, can solve the problems of inconvenience, affecting staff to observe the actual situation of packaging products, fogging of PET protective film, etc.

Inactive Publication Date: 2021-03-19
东莞市义鸿实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, when the current PET protective film is used to package items, if it passes through an area with a large temperature difference during transportation, the surface of the PET protective film will fog up, which will affect the staff to observe the actual situation of the internal packaging products, which is inconvenient

Method used

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  • PET acid and alkali resistant protective film and preparation method thereof
  • PET acid and alkali resistant protective film and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example 1

[0092] A kind of antifogging agent, is made by following method:

[0093] Mix 1.2kg of N-(2-hydroxyethyl) dodecylamide, 10kg of alkanolamide and 2kg of vinyl bisstearamide, and heat to 110°C to obtain the first mixed solution. Add 0.8kg of methylcellulose Soak in the first mixture for 4 hours, keep the temperature of the first mixture at 90°C, ultrasonically treat for 20s, heat the mixture to 92°C, stir for 1 hour, cool to room temperature and grind the mixture to obtain a particle size of 100-300 mesh anti-fog agent.

preparation example 2

[0095] A kind of antifogging agent, is made by following method:

[0096] Mix 2.1kg of N-(2-hydroxyethyl) dodecylamide, 20kg of alkanolamide and 1kg of vinyl bisstearamide, and heat to 120°C to obtain the first mixed solution. Add 0.1kg of methylcellulose After mixing with 0.1kg cellulose acetate butyrate, soak in the first mixed solution for 4 hours, keep the temperature of the first mixed solution at 80°C, ultrasonically treat for 30s, heat the mixed substance to 95°C, stir for 2 hours, and cool to room temperature Grind the mixture to obtain an antifogging agent with a particle size of 400-500 mesh.

preparation example 3

[0098] A kind of antifogging agent, is made by following method:

[0099] Mix 1.8kg N-(2-hydroxyethyl) dodecylamide, 12kg alkanolamide and 1.5kg vinyl bisstearamide, and heat to 115°C to obtain the first mixed liquid, and 0.2kg methyl cellulose After the element is mixed with 0.5kg cellulose acetate butyrate, soak in the first mixed solution for 2.5h, keep the temperature of the first mixed solution at 85°C, ultrasonically treat it for 25s, heat the mixed substance to 90°C, stir for 1.5h, and cool After reaching room temperature, grind the mixture to obtain an anti-fogging agent with a particle size of 200-500 mesh.

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Abstract

The invention belongs to the technical field of protective film materials, and discloses a PET acid and alkali resistant protective film and a preparation method thereof. The protective film is prepared from the following raw materials of: PET, PE, LLDPE, a plasticizer, an antifogging agent and nano silicon dioxide. The antifogging agent is prepared from the following raw materials: alkanolamide,glyceryl monostearate, vinyl bis stearamide, cellulose and N-(2-hydroxyethyl) dodecyl amide. According to the preparation method, mixing, extruding and casting are sequentially performed to obtain theprotective film. The protective film has good antifogging effect and good self-adhesion effect; and due to high crosslinking of compositions, molecular chains are closely arranged, the structure of the protective film is compact, and the acid and alkali resistance of the protective film is good.

Description

technical field [0001] The application relates to the field of protective film materials, more specifically, it relates to a PET acid and alkali resistant protective film and a preparation method thereof. Background technique [0002] PET protective film is a transparent, elastic, strong, non-toxic and harmless soft polyethylene terephthalate film, which has the advantages of toughness, impact resistance, acid and alkali resistance, transparency and self-adhesiveness, so In the application process of packaging products, it is widely used, and can play the role of moisture-proof, dust-proof and product protection. [0003] However, when the current PET protective film is used to package items, if it passes through an area with a large temperature difference during transportation, the surface of the PET protective film will fog up, which will affect the staff to observe the actual situation of the internal packaging product, which is inconvenient. Contents of the invention ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/02C08L23/06C08L23/08C08L1/28C08L1/14C08K13/06C08K9/04C08K3/36C08K5/20C08K5/103C08K5/12C08J5/18
CPCC08J5/18C08J2367/02C08J2423/06C08J2423/08C08J2401/28C08J2401/14C08K13/06C08K9/08C08K2201/011C08K3/36C08K5/20C08K2201/014C08K5/103C08K5/12
Inventor 陈善文
Owner 东莞市义鸿实业有限公司