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High-temperature steaming resistant and easy-uncovered composite film and manufacturing method thereof

A technology of high-temperature cooking and composite film, which is applied in the field of packaging, can solve the problems of unsuitable equipment application, narrow heat-sealing window of composite film, limited improvement of heat resistance, etc. The effect of stable strength

Inactive Publication Date: 2018-06-01
JIANGYIN BAOBO PACKING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The composite film prepared by this chemical modification method usually has a narrow heat sealing window, which cannot be applied to a wider range of equipment applications
In addition, food and drug packaging is often sterilized by high-temperature steam. The chemically modified copolymer prepared by the current process has limited improvement in its heat resistance and cannot be applied to wider applications.

Method used

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  • High-temperature steaming resistant and easy-uncovered composite film and manufacturing method thereof
  • High-temperature steaming resistant and easy-uncovered composite film and manufacturing method thereof
  • High-temperature steaming resistant and easy-uncovered composite film and manufacturing method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0028] The invention is a kind of high-temperature cooking and easy-to-remove composite film, which includes a surface layer, a barrier layer and a heat-sealing layer arranged in sequence;

[0029] The surface layer is PET, biaxially oriented PET produced by Anhui Guofeng, the barrier layer is AL, and the alloy grade is 8011 from Zhongji Company. The proportion of the heat sealing layer is: 75% polyethylene particles, 15% polypropylene particles, and 10% talc. The talc is sieved through a 1000-mesh sieve. The talc is made of plastic-reinforced talc produced in Jiangxi Ao, and modified with KH550 silane coupling agent. (Stir in a high mixer for 20min) and dry after mixing. The composite glue adopts high temperature cooking glue. The polyethylene particles are low-density polyethylene, brand: Yanba 2426H, and the polypropylene particles are brand: Hyundai H1501. The melt flow index of polyethylene is 2-6g / 10min, the melting point is 90-100°C, and the density is 0.92g / cm3; the ...

Embodiment 2

[0034] The difference from Example 1 is that the barrier layer is aluminized PET, and the proportion of the heat-sealing layer is: 75% of polyethylene particles, 15% of polypropylene particles, and 10% of calcium carbonate. Calcium carbonate is sieved through a 1000-mesh sieve, and the superfine calcium carbonate adopts the superfine calcium carbonate produced in Jiangxi Ao Specialty. The amount of silane coupling agent added is 8% of the calcium carbonate mass, and repeated stirring (stirring in a high mixer for 15min) is mixed Then dry. High temperature cooking glue adopts Henkel UK3640.

Embodiment 3

[0036] The difference from Example 1 is that the proportion of the heat-sealing layer is: 75% of polyethylene particles, 15% of polypropylene particles, and 10% of calcium carbonate. Calcium carbonate is sieved through 1000 mesh sieves, adopts titanate coupling agent, and technique is that the concentration of titanate coupling agent is 5%, and the addition is 8% of calcium carbonate quality, repeats stirring (stirring in high mixer 30min) and dry after mixing. Bostik EPS6560 is used for high-temperature cooking glue.

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Abstract

The invention discloses a high-temperature steaming resistant and easy-uncovered composite film. The film comprises a surface layer, a barrier layer and a heat sealing layer arranged in sequence; thesurface layer is a single-layer structure or two-layer composite structure or a three-layer composite structure, and comprises a PET film, a nylon film or a polypropylene film; the barrier layer is aluminum foil or aluminized PET; and the heat sealing layer is an inorganic filler modified polyethylene film. The invention also discloses a manufacturing method of the high-temperature steaming resistant and easy-uncovered composite film. The film of the invention can be subjected to high-temperature steaming sterilization, has good transparency, a wide heat sealing window, stable heat sealing strength and excellent uncovering property, and can meet safety performance requirements of medical packaging. After reaching the heat sealing window, the film of the invention does not cause dead sealing compared with a conventional film.

Description

technical field [0001] The invention relates to a high-temperature cooking easy-to-remove composite film and a manufacturing method thereof, belonging to the technical field of packaging. Background technique [0002] At present, most food and drug bottled containers are sealed with PE film. It is often found that the packaging bag is difficult to open, or even "deadly sealed", and it is difficult to uncover the packaging film from the cup body, which brings a lot of inconvenience to consumers. For this reason, more and more packaging companies have begun to pay attention to easy-to-open effect packaging films. [0003] The easy-to-open effect packaging film is mainly divided into easy-to-tear type and easy-to-remove type. Among them, the easy-to-tear type is mainly achieved by tearing the tear line / mouth or using an easy-to-tear composite film. The easy-to-peel packaging is mainly to control the heat seal strength of the packaging material, so that the packaging material ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B15/20B32B15/09B32B15/088B32B15/085B32B27/06B32B27/08B32B27/32B32B27/36B32B27/34B32B37/00B29D7/01
CPCB32B15/20B29D7/01B32B15/085B32B15/088B32B15/09B32B27/08B32B27/32B32B27/34B32B27/36B32B37/00
Inventor 陈健徐文法符坚黄文娟赵刚
Owner JIANGYIN BAOBO PACKING
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