High-barrier multi-layer coextrusion functional packaging film with ultraviolet resistance effect

A multi-layer co-extrusion and high barrier technology, applied in the field of packaging materials, can solve the problems of solvent residue and achieve excellent anti-ultraviolet effect

Inactive Publication Date: 2019-03-01
SUNRISE PACKAGING MATERIAL JIANGYIN CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, there are polyester, polyamide, polyethylene, polypropylene and other single-layer films with anti-ultraviolet function on the market. In order to obtain multi-functional packaging films, various films need to be compounded. The compounding process will use Various adhesives, additives, solvents, etc., there are solvent residue problems

Method used

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  • High-barrier multi-layer coextrusion functional packaging film with ultraviolet resistance effect
  • High-barrier multi-layer coextrusion functional packaging film with ultraviolet resistance effect
  • High-barrier multi-layer coextrusion functional packaging film with ultraviolet resistance effect

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Embodiment 1

[0045] A preparation method of a high-barrier multilayer co-extruded functional packaging film with anti-ultraviolet effect, comprising the following steps:

[0046] 1) Feeding: Weighing type flow adjustment system and weighing type raw material proportioning system are adopted. At the same time, during the process of raw material configuration to entering the extruder, the mixed material is always kept in a continuous stirring state to ensure that the raw material is evenly mixed.

[0047] For the first polyamide layer, the raw polyamide is added to the hopper 1 of the extruder, melted at a temperature of 220-260°C, and enters the die;

[0048] For the first bonding layer, the raw material maleic anhydride-modified polyethylene (Tie) is added to the hopper 2 of the extruder, melted at a temperature of 195-220 ° C, and enters the die;

[0049] For the first polyolefin layer, the raw material polyethylene and the ultraviolet absorber are mixed and then put into the hopper 3 of ...

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Abstract

The invention discloses a high-barrier multi-layer coextrusion functional packaging film with ultraviolet resistance effect. The high-barrier multi-layer coextrusion functional packaging film sequentially comprises a first polyamide layer, a first bonding layer, a first polyolefin layer, a second bonding layer, a second polyamide layer, a high barrier layer, a third polyamide layer, a third bonding layer and a second polyolefin layer from top to bottom sequentially; the high barrier layer is made of the raw material EVOH. The packaging film, which is produced through the multi-layer coextrusion process, has excellent ultraviolet resistance effect, also has good barrier performance, high humidity blocking performance, good puncture resistance and the like, and is applicable to the fields offood packaging, electronic packaging, medical packaging and the like to effectively protect content in packages.

Description

technical field [0001] The invention belongs to the technical field of packaging materials, and in particular relates to a high-barrier multilayer co-extrusion functional packaging film with anti-ultraviolet effect and its preparation method and application. Background technique [0002] Food packaging such as poultry meat products, seafood, cooked food products, etc., such products will be irradiated by light during storage and shelf life, and the contents will be affected to a certain extent after irradiation, especially ultraviolet radiation. It will affect the color of the contents, change the composition of the contents, and even cause degradation. At present, there are polyester, polyamide, polyethylene, polypropylene and other single-layer films with anti-ultraviolet function on the market. In order to obtain multi-functional packaging films, various films need to be compounded. The compounding process will use Various adhesives, additives, solvents, etc., have solve...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B7/12B32B27/34B32B27/32B32B27/08B65D65/40
CPCB32B7/12B32B27/08B32B27/32B32B27/34B65D65/40
Inventor 顾静焦逸清许君尉
Owner SUNRISE PACKAGING MATERIAL JIANGYIN CO LTD
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