High-resistance steam resistant packaging film convenient for direct microwave heating and preparation method thereof

A microwave heating and cooking-resistant technology is applied in the field of packaging materials, which can solve the problems that the barrier performance is greatly affected by the environment, the barrier material is difficult to adapt to, and the aluminized film is not easy to recycle, etc., and achieves high food hygiene safety and quality stability. Good adaptability, comprehensive and thorough sterilization effect

Active Publication Date: 2013-07-10
HUANGSHAN NOVEL
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

PVDC, which is widely used as a packaging material with high barrier performance, will produce Cl when its waste is burned. 2 It will cause environmental pollution; the barrier performance of EVOH is greatly affected by the environment, and when the humidity is greater than 60%, the barrier performance will drop significantly; the aluminum foil is opaque, consumes a lot of resources, is easy to wrinkle, and blocks microwave tra

Method used

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  • High-resistance steam resistant packaging film convenient for direct microwave heating and preparation method thereof
  • High-resistance steam resistant packaging film convenient for direct microwave heating and preparation method thereof
  • High-resistance steam resistant packaging film convenient for direct microwave heating and preparation method thereof

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preparation example Construction

[0054] Such as figure 2 Shown, a kind of preparation method of the high barrier retort resistant packaging film that is convenient to direct microwave heating, it comprises the steps:

[0055] 1) Alumina-coated PET film is obtained by subjecting the PET film to an alumina-plating process;

[0056] And the ingredients of retort-resistant cast polypropylene film RCPP are prepared through extrusion process, cooling and shaping process, thickness measurement process, deflection process, corona process, and edge trimming process to obtain retort-resistant cast polypropylene film RCPP. The retort-resistant cast polypropylene film RCPP is composed of a corona layer 51, an intermediate layer 52 and a heat-sealing layer 53 connected in sequence;

[0057] 2) Then, the outer layer film is obtained by laminating the alumina-coated PET film and the BOPA layer of the polyamide film through the first retort-resistant adhesive layer;

[0058] 3) The polyamide film BOPA layer of the outer f...

Embodiment 1

[0062] 1) Preparation of alumina-coated PET film

[0063] Alumina-coated PET film is produced by subjecting PET film to aluminum oxide evaporation process

[0064] Alumina evaporation technology is based on the traditional aluminum plating process, using a radio frequency plasma treatment system to clean and functionalize the surface of the evaporation substrate, that is, PET film, and then using a microwave plasma treatment system to ionize oxygen and aluminum vapor to form oxygen ions and aluminum ions; the ionized oxygen ions and aluminum ions fully react in the upper part of the evaporation zone to form aluminum oxide uniformly deposited on the surface of the PET film, thus forming a dense transparent ALOx evaporation layer.

[0065] Preparation of RCPP film

[0066] The preparation of RCPP film includes the following processes in sequence: extrusion process, cooling and shaping process, thickness measurement process, deflection process, corona process, trimming and windi...

Embodiment 2

[0082] 1) Preparation of alumina-coated PET film

[0083] Alumina-coated PET film is produced by subjecting PET film to aluminum oxide evaporation process

[0084]Alumina evaporation technology is based on the traditional aluminum plating process, using a radio frequency plasma treatment system to clean and functionalize the surface of the evaporation substrate, that is, PET film, and then using a microwave plasma treatment system to ionize oxygen and aluminum vapor to form oxygen ions and aluminum ions; the ionized oxygen ions and aluminum ions fully react in the upper part of the evaporation zone to form aluminum oxide uniformly deposited on the surface of the PET film, thus forming a dense transparent ALOx evaporation layer.

[0085] Preparation of RCPP film

[0086] The preparation of RCPP film includes the following processes in sequence: extrusion process, cooling and shaping process, thickness measurement process, deflection process, corona process, trimming and windin...

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Abstract

The invention belongs to the technical field of packaging materials, and in particular relates to a high-resistance steam resistant packaging film convenient for direct microwave heating and a preparation method thereof. The packaging film comprises an aluminum oxide plated PET (polyethylene terephthalate) film layer, a first steam resistant adhesive layer, a polyamide film layer, a second steam resistant adhesive layer and a steam resistant curtain coating polypropylene film layer which are adhered together in sequence. The preparation method of the packaging film comprises the following steps of: preparing an aluminum oxide plated PET film by steam-plating aluminum oxide on a PET film; then compounding the aluminum oxide plated PET film and the polyamide film layer together to obtain an outer layer film; and compounding the steam resistant curtain coating polypropylene film layer and the outer film layer together through a solvent-less compounding technology, thus obtaining the packaging film. The packaging film can heated with microwave directly, can resist 135DEG C high-temperature digestion to ensure that sterilization is carried out more comprehensive and thorough, and is high in resistance, good in heat sealability and air tightness, good in impact resistance, and excellent in physical mechanical property.

Description

technical field [0001] The invention belongs to the technical field of packaging materials, and in particular relates to a high-barrier and retort-resistant packaging film convenient for direct microwave heating and a preparation method thereof. Background technique [0002] As a "sunrise industry", plastic packaging materials are an indispensable part of the development of the national economy. With the development of the economy, the growth of social demand and the expansion of export commodities, the requirements for plastic packaging materials are getting higher and higher. Plastic packaging materials should be developed in the direction of energy saving, pollution prevention, multi-function and humanization. [0003] Retort packaging is one of the fastest-growing packaging categories in the past two years. High-temperature resistant retort food packaging bags (hereinafter referred to as retort-resistant bags), commonly known as soft cans, are most notable for their lon...

Claims

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Application Information

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IPC IPC(8): B32B27/06B32B27/08B32B27/32B32B27/34B32B27/36B65D65/40B29C69/00
Inventor 方洲陈付兵吴跃忠汪来胜胡继超汪洋
Owner HUANGSHAN NOVEL
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