Production technology for package composite film

A production process and composite film technology, which is applied in the field of composite films, can solve the problems of inability to meet the requirements of high-quality products, poor texture of aluminum-plastic composite films, and low peel strength of aluminum-plastic composite films, so as to prolong the service life And the effect of chemical stability, improving chemical stability and good mechanical properties

Active Publication Date: 2019-07-23
广东中兴塑料纸类印刷有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the low peel strength of the existing aluminum-plastic composite film for packaging, the phenomenon that the aluminized film and the plastic layer are prone to detachment when used in acidic contents or under high temperature conditions, and the traditional aluminum-plastic composite film The image quality is not good, and the compound of the existing window-opening plastic packaging bag is not firm, which easily affects the quality of the food in the packaging bag and cannot meet the requirements of high-quality products. A production process of a composite film for packaging is proposed

Method used

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  • Production technology for package composite film

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Experimental program
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Effect test

Embodiment 1

[0025] A kind of production technology of the composite film for packaging that the present invention proposes, comprises the following steps:

[0026] S1. Pretreatment of the surface of the aluminized film: soak the aluminized film in treatment I agent, ultrasonically treat it for 1.5 minutes, heat up to 30°C, add treatment II agent, ultrasonically react for 5 minutes, then heat up to 35°C, add treatment III agent , after stirring until uniform, ultrasonically disperse for 10 minutes, stop ultrasonic, and cool to room temperature naturally, rinse with clear water, and then dry to complete the surface pretreatment of the aluminized film, the frequency of the ultrasonic treatment is 20KHz;

[0027] The treatment I agent is made by mixing hydrofluoric acid, concentrated hydrochloric acid and water with a volume ratio of 0.3:1.2:100;

[0028] The treatment II agent is formed by mixing sodium stearate, triglyceride, absolute ethanol and water with a mass ratio of 0.4:0.06:40:15; ...

Embodiment 2

[0034] A kind of production technology of the composite film for packaging that the present invention proposes, comprises the following steps:

[0035] S1. Pretreatment of the surface of the aluminized film: soak the aluminized film in treatment I agent, ultrasonically treat for 1.2 minutes, heat up to 33°C, add treatment II agent, ultrasonically react for 4 minutes, then heat up to 40°C, add treatment III agent , after stirring until uniform, ultrasonically disperse for 8min, stop ultrasonically, and naturally cool to room temperature, rinse with clear water, and then dry to complete the surface pretreatment of the aluminized film, the frequency of the ultrasonic treatment is 30KHz;

[0036] The treatment I agent is made by mixing hydrofluoric acid, concentrated hydrochloric acid and water with a volume ratio of 0.5:1.4:100;

[0037] The treatment II agent is formed by mixing sodium stearate, triglyceride, absolute ethanol and water with a mass ratio of 0.3:0.045:35:13;

[0...

Embodiment 3

[0043] A kind of production technology of the composite film for packaging that the present invention proposes, comprises the following steps:

[0044] S1. Pretreatment of the surface of the aluminized film: Soak the aluminized film in treatment I agent, ultrasonically treat it for 1.5 minutes, heat up to 35°C, add treatment II agent, ultrasonically react for 3 minutes, then heat up to 45°C, add treatment III agent , after stirring until uniform, ultrasonically disperse for 5min, stop ultrasonic, and naturally cool to room temperature, rinse with clear water, and then dry to complete the surface pretreatment of the aluminized film, the frequency of the ultrasonic treatment is 40KHz;

[0045] The treatment I agent is made by mixing hydrofluoric acid, concentrated hydrochloric acid and water with a volume ratio of 0.6:1.2:100;

[0046] The treatment II agent is formed by mixing sodium stearate, triglyceride, absolute ethanol and water with a mass ratio of 0.3:0.03:40:15;

[004...

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Abstract

The invention provides a production technology for a package composite film. The production technology comprises the following steps that firstly, an aluminum plating film is immersed in a treating agent I, ultrasonic treatment is conducted, temperature rise is conducted to 30-35 DEG C, a treating agent II is added, the ultrasonic reaction is conducted, then, temperature rise is conducted to 35-45DEG C, a treating agent III is added, after stirring is conducted to be uniform, ultrasonic dispersion is conducted, natural cooling is conducted to the room temperature, clean water is adopted for flushing, and aluminum plating film surface pretreatment is finished after drying; secondly, the inner surface of the treated aluminum plating film is coated with a sizing material, and a sizing material layer is formed; thirdly, a polypropylene film is formed on the face, away from the aluminum plating film, of the sizing material layer in a curtain coating manner, then a hot press is utilized forconducting hot pressing on the curtain coating polypropylene layer, and after hot pressing is finished, natural cooling is conducted to the room temperature; and fourthly, a pattern is printed on theside, away from the polypropylene layer, of the aluminum plating film, then drying is conducted, and the package composite film is obtained. According to the provided production technology, operationis simple, acid resistance is good, the service life is long, and good mechanical performance is achieved.

Description

technical field [0001] The invention relates to the technical field of composite films, in particular to a production process of a composite film for packaging. Background technique [0002] Plastic composite film is currently the most widely used food packaging material, especially the aluminum-plastic composite film composited with plastic and aluminized film has good flexibility, moisture resistance, oxygen barrier, shading, shielding, and anti-corrosion properties. The advantages of static electricity, vacuumability, and color printing are widely used in food, medicine, pesticides, chemicals, mechanical and electrical products and other fields. According to the properties and storage requirements of different contents, the aluminum-plastic composite film can be composed of different types of plastic layers and aluminum-coated films. [0003] The aluminum washing bag is a kind of aluminum-plastic composite film, which is a composite bag made of plastic film composited wi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29D7/01
CPCB29D7/01
Inventor 林伟贤林帆胡汉振陈少彬
Owner 广东中兴塑料纸类印刷有限公司
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