Oxygen blocked composite film and preparation method thereof and packaging box

A composite film and oxygen barrier technology, which is applied in packaging, wrapping paper, household packaging, etc., can solve the problems of difficult separation of PET food packaging boxes, achieve the effects of reducing production costs, good barrier performance, and realizing resource recycling and reuse

Inactive Publication Date: 2019-08-06
武汉莱宝新材料技术有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The main purpose of the present invention is to propose an oxygen barrier composite film and its preparation method, as well as a packaging box

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  • Oxygen blocked composite film and preparation method thereof and packaging box
  • Oxygen blocked composite film and preparation method thereof and packaging box
  • Oxygen blocked composite film and preparation method thereof and packaging box

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Embodiment Construction

[0025] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below. Those who do not indicate the specific conditions in the examples are carried out according to the conventional conditions or the conditions suggested by the manufacturer. The reagents or instruments used were not indicated by the manufacturer, and they were all conventional products that could be purchased from the market.

[0026] It should be noted that if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. Implying their relative importance or implying the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include at least one of these features. In addition, the meaning of "...

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Abstract

The invention discloses an oxygen blocked composite film, a preparation method thereof and a packaging box. The oxygen blocked composite film comprises a heat-sealing layer, a blocked layer and a supporting layer which are stacked in sequence, wherein the heat-sealing layer comprises a thin film layer formed by PETG; the blocked layer comprises at least one first blocked thin film layer formed byEVOH and/or at least one second blocked thin film layer formed by PA; the supporting layer comprises a biaxially oriented thin film; and the fusing co-extrusion compounding is performed between the heat-sealing layer and the blocked layer and between the blocked layer and the supporting layer through bonding layers. When the oxygen blocked composite film provided by the invention is used as a cover film of a PET packaging box body, the packaging can be realized without additionally adding a thin film layer for heat sealing; after the oxygen blocked composite film is used for packaging the PETpackaging box, the oxygen blocked composite film can be completely separated from the packaging box body, and thus, the resource recycling of the PET packaging box is realized.

Description

technical field [0001] The invention relates to the technical field of packaging materials, in particular to the technical field of food packaging, in particular to an oxygen barrier composite film, a preparation method thereof, and a packaging box. Background technique [0002] With the development of co-extrusion composite molding technology and co-extrusion equipment, more and more packaging materials use multi-layer composite materials, and their performance can usually meet the standards of cooking resistance, baking resistance and low temperature resistance, and some multi-layer Composite materials also have functions such as gas barrier, light shading, and moisture resistance, and have a wide range of applications. When multi-layer composite materials are selected as food packaging materials, such as the cover film of PET (polyethylene terephthalate) food packaging boxes, the packaging method is usually to add One layer is used for bonding and the material is differe...

Claims

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Application Information

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IPC IPC(8): B65D65/40B32B27/08B32B27/36B32B27/30B32B27/34B32B27/32B32B7/12
CPCB32B7/12B32B27/08B32B27/306B32B27/32B32B27/34B32B27/36B32B2307/31B32B2307/7244B32B2439/00B65D65/40
Inventor 卜翔钱伟李仁华
Owner 武汉莱宝新材料技术有限公司
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