Ultraviolet-proof transparent high-barrier packaging film and preparation method thereof

An anti-ultraviolet and high-barrier technology, which is applied in packaging, household packaging, and packaged food, can solve the problems of inability to extend food shelf life, high production costs, and low heat-sealing strength, and achieve excellent UV barrier properties and comprehensive production costs. The effect of low cost and simple production process

Inactive Publication Date: 2020-06-02
潍坊中荷数高分子材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The vast majority of food packaging in my country uses multi-layer composite films produced by dry composite methods. This method not only has high production costs, poor transparency, no resistance to extension, and poor anti-ultraviolet performance, but also causes food damage due to solvent precipitation in the adhesive. Pollution problems, developed countries have long banned the use of food packaging
There are several multi-layer co-extrusion down blowing (water cooling) manufacturers in China, but the quality is not stable enough
The produced high-barrier packaging film has poor barrier properties and cannot prolong the shelf life of food, and the peel strength of the prepared packaging film is not enough, resulting in low heat-sealing strength and the risk of rupture during transportation

Method used

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  • Ultraviolet-proof transparent high-barrier packaging film and preparation method thereof

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Effect test

Embodiment 1

[0037] Example 1: A preparation method of a UV-resistant transparent high-barrier packaging film

[0038] The preparation method of a kind of anti-ultraviolet transparent high-barrier packaging film of the present embodiment comprises the following steps:

[0039] (1) Preparation of attapulgite intercalation modified montmorillonite composite nanofiller:

[0040] At 60°C, disperse attapulgite in water, add 3wt% sodium hexametaphosphate, add 1% modifier of attapulgite mass to the solution, dimethylaminomethacrylate trimethylammonium chloride, Stir and react at 60°C for 1 hour; then add montmorillonite with attapulgite mass of 100 wt% to it, continue stirring for 15 minutes, filter and dry, and attapulgite intercalated modified montmorillonite composite nanofiller is prepared.

[0041]In this process, the ammonium salt cationic groups grafted on the surface of attapulgite are intercalated into the interlayer of montmorillonite by utilizing the cation-exchangeable properties of ...

Embodiment 2

[0047] Example 2: A preparation method of a UV-resistant transparent high-barrier packaging film

[0048] The preparation method of a kind of anti-ultraviolet transparent high-barrier packaging film of the present embodiment comprises the following steps:

[0049] (1) Preparation of attapulgite intercalation modified montmorillonite composite nanofiller:

[0050] At 30°C, disperse the attapulgite in water, add 6wt% sodium hexametaphosphate, and add 1% modifier of attapulgite mass to the solution, dimethylaminomethacrylate trimethylammonium chloride, Stir and react at 60°C for 0.5 hours; then add montmorillonite with attapulgite mass of 150wt% to it, continue stirring for 30 minutes, filter and dry, and attapulgite intercalated modified montmorillonite composite nanofiller is prepared.

[0051] In this process, the ammonium salt cationic groups grafted on the surface of attapulgite are intercalated into the interlayer of montmorillonite by utilizing the cation-exchangeable pro...

Embodiment 3

[0057] Example 3: A preparation method of a UV-resistant transparent high-barrier packaging film

[0058] The preparation method of a kind of anti-ultraviolet transparent high-barrier packaging film of the present embodiment comprises the following steps:

[0059] (1) Preparation of attapulgite intercalation modified montmorillonite composite nanofiller:

[0060] At 55°C, attapulgite was dispersed in water, 5wt% sodium hexametaphosphate was added, and a modifier of attapulgite mass 1% was added to the solution, dimethylaminomethacrylate trimethylammonium chloride, Stir and react at 55°C for 1.2 hours; then add montmorillonite with attapulgite mass of 200wt% to it, continue stirring for 5 minutes, filter and dry, and attapulgite intercalated modified montmorillonite composite nanofiller is prepared.

[0061] In this process, the ammonium salt cationic groups grafted on the surface of attapulgite are intercalated into the interlayer of montmorillonite by utilizing the cation-ex...

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Abstract

The invention discloses a preparation method of an ultraviolet-proof transparent high-barrier packaging film. According to the invention, a polymer base material is modified by adopting an attapulgiteand montmorillonite composite nano-filler through a multi-layer co-extrusion down-blowing water cooling process, and the attapulgite intercalated montmorillonite composite nano-filler forms a specialinterpenetrating network structure, and forms a certain orientation during extrusion so as to become a nucleating agent and a barrier material of a high polymer material, so that the prepared multi-layer co-extrusion packaging film can effectively resist ultraviolet irradiation, and has excellent transparency, excellent boiling resistance, excellent ductility resistance and excellent barrier property; the raw material selection range is wide, the film can be produced according to user requirements and the lowest cost principle, and the optimal cost performance is achieved; the production process is pollution-free, and the product is non-toxic in the use process, can be used for high-barrier packaging of foods, beverages and the like, and replaces import; and compared with the existing domestic dry compounding method, the method provided by the invention has the advantages of simple production process, high efficiency, low comprehensive production cost and excellent performance.

Description

technical field [0001] The invention relates to the field of film materials, in particular to an ultraviolet-proof transparent high-barrier packaging film and a preparation method thereof. Background technique [0002] For consumers, the transparency of product information and packaging is very welcome. Because of this, the global transparent barrier packaging films market in the food industry has witnessed steady growth over the past few years and this trend is expected to continue. In the food industry, this packaging film provides moisture and airtight packaging for food, and its high barrier properties extend the shelf life of food. Processed products, such as fruit, vegetables and dairy products, are the main categories packaged with transparent barrier films. By adopting this type of packaging, food manufacturers can better demonstrate the freshness of their products to customers as a means of increasing sales. Transparent barrier packaging film is a packaging film ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/08B32B27/34B32B27/18B32B27/20B32B27/32B29C48/08B29C48/21B29K105/16B29L7/00B29L9/00
CPCB29K2105/162B29L2007/00B29L2009/00B32B27/08B32B27/18B32B27/20B32B27/32B32B27/34B32B2250/24B32B2307/412B32B2307/71B32B2307/724B32B2307/7246B32B2439/70
Inventor 谷正何和平步卫卫
Owner 潍坊中荷数高分子材料有限公司
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