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Multilayer frozen polyethylene film

A polyethylene film and polyethylene technology, applied in the field of packaging materials, can solve the problems of unsafe transportation and easy to be polluted, and achieve the effects of reliable and safe transportation, protection of sanitation and safety, heat sealing speed and strong fastness

Inactive Publication Date: 2013-02-06
ANHUI KOYO HENGDA PACKING MATERIAL SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, PE film is easy to become brittle at about -15 degrees, which will cause the product packaging bag to break and expose the food in the content, which is easy to be polluted; and the broken bag is extremely unsafe during storage and transportation.

Method used

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  • Multilayer frozen polyethylene film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] The weight percentages of selected raw materials are as follows:

[0028] Protective layer: low density polyethylene 60%, linear low density polyethylene 40%;

[0029] Temperature resistant layer: low density polyethylene 60%, chlorinated polyethylene 40%;

[0030] Heat seal layer: low density polyethylene 65%, chlorinated polyethylene 10%, metallocene linear low density polyethylene 25%.

[0031] Prepare the protective layer, temperature-resistant layer and heat-sealable layer according to the above ratio, and then put them into the hopper of each layer of the extruder in the film blowing machine. After heating, the die is extruded and blown by the die to cool and form and then pulled up. Then coiling, slitting and re-inspection, and finally inspection, packing and storage.

[0032]

Embodiment 2

[0034] The weight percentages of selected raw materials are as follows:

[0035] Protective layer: low density polyethylene 55% and linear low density polyethylene 45%;

[0036] Temperature resistant layer: low density polyethylene 60%, chlorinated polyethylene 40%;

[0037] Heat seal layer: low density polyethylene 65%, chlorinated polyethylene 10% and metallocene linear low density polyethylene 25%.

[0038] Prepare the protective layer, temperature-resistant layer and heat-sealable layer according to the above ratio, and then put them into the hopper of each layer of the extruder in the film blowing machine. After heating, the die is extruded and blown by the die to cool and form and then pulled up. Then coiling, slitting and re-inspection, and finally inspection, packing and storage.

[0039]

Embodiment 3

[0041] The weight percentages of selected raw materials are as follows:

[0042] Protective layer: low density polyethylene 65% and linear low density polyethylene 35%;

[0043] Temperature resistant layer: low density polyethylene 65%, chlorinated polyethylene 35%;

[0044] Heat seal layer: low density polyethylene 70%, chlorinated polyethylene 10% and metallocene linear low density polyethylene 20%.

[0045] Prepare the protective layer, temperature-resistant layer and heat-sealable layer according to the above ratio, and then put them into the hopper of each layer of the extruder in the film blowing machine. After heating, the die is extruded and blown by the die to cool and form and then pulled up. Then coiling, slitting and re-inspection, and finally inspection, packing and storage.

[0046]

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Abstract

The invention provides a multilayer frozen polyethylene film which comprises three layers of polyethylene film, including a protective layer, a heat-resistant layer and a hot seal layer from top to bottom. The multilayer frozen polyethylene film is 3-10dmm in thickness. The multilayer frozen polyethylene film is high in low temperature resistance, higher in hot sealing speed, higher in firmness, and more reliable and safer to storage, quality guarantee, transport and the like of packaged goods.

Description

technical field [0001] The invention relates to a packaging material, in particular to a multilayer polyethylene film for frozen food. [0002] Background technique [0003] The packaging of goods plays an important role in the storage, quality assurance and transportation of goods. With the rapid development of the times, people's life tends to be more convenient and faster, and there are more and more requirements for frozen food, so there are higher requirements for the packaging of frozen food. [0004] Frozen food packaging mostly adopts a two-layer composite film, which consists of a printed protective layer on the outer layer and a heat-sealing layer on the inner layer. The printing protective layer is generally made of biaxially oriented polypropylene (BOPP) film because it requires good printing adaptability and stability, gloss, transparency, etc., and has a certain protective function; the heat-sealing layer mainly plays the role of The functions of moisture re...

Claims

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Application Information

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IPC IPC(8): B32B27/32
Inventor 顾维宏李进李志军
Owner ANHUI KOYO HENGDA PACKING MATERIAL SCI & TECH
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