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Multilayer coextrusion paper-like liquid packaging film

A multi-layer co-extrusion and packaging film technology, applied in packaging, wrapping paper, biological packaging, etc., can solve the problems of consuming petroleum resources, packaging liquid food, etc., and achieve the goal of reducing carbon emissions, reducing crystal points, and improving mechanical strength Effect

Pending Publication Date: 2010-12-08
刘燕
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

According to incomplete statistics, in 2009, the amount of film used for milk packaging alone reached 7,200 tons (yearly). Such a large amount, coupled with the characteristics of liquid food itself, all use liquid packaging made of 100% plastic raw materials. film, it is impossible to use biodegradable packaging materials to package liquid food, so it brings huge pressure to environmental protection, and also consumes a lot of petroleum resources

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Embodiment 1 (the embodiment 1 of b outer layer):

[0026] In the embodiment of the present invention, the multi-layer co-extruded imitation paper liquid packaging film, b outer layer is by 75% calcium carbonate (manufacturer: Heshan Chemical Industry), 5% natural rubber, ethylene-acrylic acid copolymer, mixing ratio 1 : 0.5 (manufacturer: DuPont, USA) and 20% polyethylene (manufacturer: CNOOC). After fully mixing the calcium carbonate, natural rubber, ethylene-acrylic acid copolymer, and polyethylene, extrude and granulate with a twin-screw extrusion granulator, and fully dry to obtain a multi-layer co-extruded imitation paper liquid packaging film. b Outer material.

[0027] The processing temperatures of each section of the twin-screw extrusion granulator are: 170°C, 180°C, 190°C, 190°C, 200°C.

Embodiment 2

[0028] Embodiment 2 (the embodiment 2 of b outer layer):

[0029] In the embodiment of the present invention, the multi-layer co-extruded imitation paper liquid packaging film, b outer layer is made of 65% talcum powder, titanium dioxide, mixing ratio 1: 0.2 (manufacturer: Heshan Chemical Industry), 8% vinyl trimethyl Oxysilane, butyl rubber, triphenyl phosphite, mixing ratio 1:2:0.01 (manufacturer: Nanjing Shuguang Chemical Co., Ltd.) and 27% polypropylene (manufacturer: Yanshan Chemical). After fully mixing the talcum powder, titanium dioxide, vinyltrimethoxysilane, butyl rubber, triphenyl phosphite, and polypropylene, extrude and granulate with a twin-screw extrusion granulator, and fully dry, Obtain the b outer layer raw material of the multilayer co-extruded imitation paper liquid packaging film.

[0030] The processing temperatures of each section of the twin-screw extrusion granulator are: 170°C, 180°C, 190°C, 190°C, 200°C.

Embodiment 3

[0031] Embodiment 3 (the embodiment 3 of b outer layer):

[0032] In the embodiment of the present invention, the multi-layer co-extruded imitation paper liquid packaging film, the b outer layer is made of 30% calcium carbonate, kaolin, clay (manufacturer: Heshan Chemical Industry), 15% polyethylene elastomer, erucamide , with a mixing ratio of 1:0.01 (manufacturer: Hebei Bairuier Packaging Material Co., Ltd.) and 55% polyethylene and polypropylene (manufacturer: CNOOC). After fully mixing the calcium carbonate, kaolin, clay, polyethylene elastomer, erucamide, polyethylene, and polypropylene, extrude and granulate with a twin-screw extrusion granulator, and fully dry to obtain a multi-layer co- Extrude the b outer layer raw material of imitation paper liquid packaging film.

[0033] The processing temperatures of each section of the twin-screw extrusion granulator are: 170°C, 180°C, 190°C, 190°C, 200°C.

[0034] The above raw materials are extruded and blown into a film wi...

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Abstract

The invention provides a multilayer coextrusion paper-like liquid packaging film. In resent years, people demand more dairy products, and the demand for the packaging films of various kinds of dairy products and liquid foods increases along with the continuous development of a UHT (Ultra Heat Treated) sterilization technology. According to incomplete statistics, only the consumption of milk packaging films reaches 7200 tons / year in 2009, and because liquid foods have self characteristics, liquid packaging films which are all made from 100% plastics are impossible to adopt a biodegradable packaging material to package the liquid foods so that gigantic pressure is brought to environmental protection, and a great amount of oil resources is consumed. Therefore, the field needs a material which can be used for packaging liquid, particularly a multi-layer liquid packaging film for packaging liquid dairy products and being capable of reducing the consumption of oil resources. According to one aspect of the invention, the invention provides the multilayer film is used for packaging liquid and can greatly reduce the consumption of plastic raw materials.

Description

Background technique: [0001] In recent years, with the increasing demand for dairy products and the continuous development of UHT sterilization technology, the demand for packaging films for various dairy products and liquid food is also increasing. According to incomplete statistics, in 2009, the amount of film used for milk packaging alone reached 7,200 tons (yearly). Such a large amount, coupled with the characteristics of liquid food itself, all use liquid packaging made of 100% plastic raw materials. Films cannot use biodegradable packaging materials to package liquid food at all, so it brings huge pressure to environmental protection and consumes a lot of petroleum resources. [0002] Therefore, there is still a need in the art for a material that can be used for liquid packaging, especially for packaging liquid dairy products, and has a multi-layer liquid packaging film structure that reduces the consumption of petroleum resources. Invention content: [0003] In orde...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B65D65/46B32B27/08B32B27/18
CPCY02A40/90Y02W30/80Y02W90/10
Inventor 刘燕
Owner 刘燕
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