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Biodegradable high-barrier liquid packaging film

A biodegradable material and packaging film technology, applied in the field of high barrier liquid packaging film and its preparation

Inactive Publication Date: 2019-07-02
刘建林 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There is currently no biodegradable plastic packaging film on the market that meets the needs of liquid food packaging

Method used

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  • Biodegradable high-barrier liquid packaging film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0110] Use a plastic five-layer co-extrusion blown film machine, add a mixture of polylactic acid (4032D) and epoxy resin (Nanya 904) to the outer 1 and outer 2 layer material boxes of the blown film machine, and the mixing ratio is: (99:1) , add ethylene-vinyl alcohol copolymer (Japan Kuraray G156) to the middle layer material box of the blown film machine, add PHB-PHV (Metabolix) and antioxidant (1010) to the inner 1 and inner 2 material boxes of the blown film machine The mixture with polyethylene (2420H), the mixing ratio is: (90:0.1:9.9), and the processing temperature is:

[0111] Outer 1 and layer extruder 120-190°C

[0112] Middle layer extruder 190-230℃

[0113] Inner 1 and inner layer extruder 120-200°C

[0114] Head temperature: 170-200°C

[0115] Co-extruded into a biodegradable liquid packaging film with a thickness of 120 μm, printed on the outer layer of the film, and cut into a finished film with a width of 350 cm. The measured oxygen transmission rate of t...

Embodiment 2

[0117] (1) With a plastic single-layer casting machine, the mixture of polybutylene succinate (PBS), starch and oxazoline high-reactivity polymer (XH-500) is the film material, and the mixing ratio is: ( 80:19:1), the processing temperature is: extruder 120-170°C, head 120-180°C, extruded into a heat-sealing layer film with a thickness of 60μm.

[0118] (2) Coating the polyvinyl alcohol coating liquid on the EDM-treated surface of the above-mentioned heat-sealing layer film with a coating machine to a coating thickness of 1 μm.

[0119] (3) Laminate the coated surface of the above-mentioned coated heat-sealing layer film with 90 μm thick paper with an adhesive using a dry laminating machine, and put it into a curing chamber for 24 hours of curing. The temperature of the curing chamber is 50°C.

[0120] (4) One side of the above-mentioned cured composite film paper is coated with cellulose varnish with a coating machine, and printed on the varnish level, and then cut into a fin...

Embodiment 3

[0123] (1) Using a plastic single-layer blown film machine, the film material is a mixture of polycaprolactone (6800), antibacterial agent (SX25) and styrene-maleic anhydride copolymer (Kray Willy 3000P), and the mixing ratio is: (90:0.02:9.98), the processing temperature is: extruder 130-190°C, head 130-200°C, extruded into a heat-sealing layer film with a thickness of 40μm.

[0124] (2) Use a plastic single-layer blown film machine, using a mixture of polylactic acid (4032D), organic peroxide and maleic anhydride graft-modified polyethylene (E226) as the material, and the mixing ratio is: (90:0.01:9.99 ), the processing temperature is: extruder 130-190°C, head 130-200°C, extruded into a protective layer film with a thickness of 60 μm.

[0125] (3) Use a dry compound machine to glue and compound the above-mentioned heat-sealing layer film and the spark surface of the protective layer film with a polyvinyl alcohol adhesive, and then put it into a curing chamber for curing for ...

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Abstract

The invention belongs to the fields of packaging materials and packaging products, and relates to a biodegradable high-barrier liquid packaging film. The packaging film concretely sequentially comprises a biodegradable heat seal layer, a barrier layer and a protective layer. The invention also relates to a method for preparing the packaging film, a use of the packaging film, and a packaging product comprising the packaging film.

Description

technical field [0001] The invention relates to the field of packaging materials, in particular to a biodegradable high-barrier liquid packaging film and a preparation method thereof. Background technique [0002] Liquid packaging film belongs to soft plastic packaging, which plays an important role in packaging liquid foods such as soy sauce, vinegar, alcohol, non-carbonated beverages, and milk. According to statistics, in the national liquid milk market in 2017, the amount of liquid packaging film for ultra-high temperature sterilized milk alone has reached about 50,000 tons. Film materials used for liquid food packaging should meet the requirements of packaging, printing, processing, storage, transportation and sanitation. The liquid packaging film that can be used in automatic packaging production lines widely used in the market at present mainly adopts polyethylene (PE) co-extrusion film. According to the appearance and performance of the film, PE co-extruded film can...

Claims

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Application Information

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IPC IPC(8): B32B7/12B32B27/08B32B27/10B32B27/20B32B27/28B32B27/36B32B33/00
CPCB32B7/12B32B27/08B32B27/10B32B27/20B32B27/28B32B27/36B32B33/00B32B2255/08B32B2255/10B32B2255/26B32B2439/70
Inventor 刘建林刘燕
Owner 刘建林
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