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High-barrier acid-resistant packaging film and preparation method thereof

A packaging film and high-barrier technology, applied in the field of packaging materials, can solve the problems of glassware easily broken, unstable packaging performance, resistance to environmental stress cracking, etc., to improve impact performance and resistance to environmental stress cracking performance, solve strong acid leakage phenomenon, the effect of improving stability

Active Publication Date: 2021-07-02
江阴市格瑞包装材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The dissociation ability of acetic acid in aqueous solution is a weak acid, but acetic acid is corrosive, and its vapor is irritating to eyes and nose
Therefore, the storage and transportation of such chemical reagents are special, and glass or plastic materials are often used to store them. Plastic materials are safer than glass materials during transportation. However, the performance of acid-resistant plastic packaging is unstable at present, and a single PVDC or EVOH barrier layer, poor barrier performance will easily lead to acid leakage; glacial acetic acid is easy to solidify at low temperature and the volume becomes larger, and glassware is easy to break, so packaging materials are required to have good impact performance and environmental stress cracking resistance

Method used

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  • High-barrier acid-resistant packaging film and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] The high-barrier acid-resistant packaging film includes a heat-sealing layer, a first barrier layer, a second barrier layer, a first adhesive layer, a third barrier layer, a second adhesive layer and a surface layer from inside to outside; the composition of the first barrier layer Including COC Japan Polyplastics 8007F-600 and LLDPE Exxon 1002XBU; the composition of the second barrier layer includes HDPE Korean Samsung F920A and LLDPE Exxon 1002XBU; the third barrier layer is EVOH Japanese synthetic ET3803RB.

[0036] The heat seal layer is mLLDPE Exxon 1018MF;

[0037] The surface layer includes layer A, layer B and layer C from outside to inside, and the composition of layer A, B and C all includes mLLDPE Exxon 1018MF, LLDPE Exxon 1002XBU and LDPE Exxon 150BW.

[0038] The first adhesive layer and the second adhesive layer include LLDPE and modified LLDPE, in terms of parts by mass, the LLDPE is 1002XBU 70 parts, and the PX3747 modified LLDPE is 30 parts.

[0039]In...

Embodiment 2

[0044] Example 2 is based on Example 1, with the difference that the total thickness of the packaging film is 152 μm, the thickness of the first barrier layer is 10 μm, and the thickness of other film layers remains unchanged.

Embodiment 3

[0046] Example 3 is based on Example 1, with the difference that the total thickness of the packaging film is 167 μm, the thickness of the second barrier layer is 9 μm, and the thickness of other film layers remains unchanged.

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Abstract

The invention discloses a high-barrier acid-resistant packaging film which comprises a heat sealing layer, a first barrier layer, a second barrier layer, a first bonding layer, a third barrier layer, a second bonding layer and a surface layer from inside to outside; the first barrier layer mainly comprises COC and LLDPE; the second barrier layer mainly comprises HDPE and LLDPE; and the third barrier layer mainly comprises at least one of PA or EVOH. The high-barrier acid-resistant packaging film comprises three barrier layers, on the basis of the PA and / or EVOH barrier layer, through cooperation of the first barrier layer composed of COC and LLDPE and the second barrier layer composed of HDPE and LLDPE, the stability of the barrier property of the packaging film is improved, the problem of strong acid seepage as time goes on is solved, and the impact performance and the environmental stress cracking resistance of the packaging film are improved. The invention also discloses a preparation method of the high-barrier acid-resistant packaging film.

Description

technical field [0001] The invention relates to the field of packaging materials, in particular to a high-barrier acid-resistant packaging film and a preparation method. Background technique [0002] Acetic acid plays an important role in the organic chemical industry and is widely used in industries such as synthetic fibers, rubber, coatings, medicines, pesticides, food additives, and dyeing and weaving. [0003] Acetic acid, also called acetic acid (36% ~ 38%), glacial acetic acid (98%), chemical formula CH 3 COOH, an organic monobasic acid, is the source of sour and pungent odor in vinegar. Pure anhydrous acetic acid (glacial acetic acid) is a colorless hygroscopic solid with a freezing point of 16.6°C (62°F) and becomes colorless crystals after solidification. The dissociation ability of acetic acid in aqueous solution is a weak acid, but acetic acid is corrosive, and its vapor is irritating to eyes and nose. Therefore, the storage and transportation of such chemical ...

Claims

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Application Information

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IPC IPC(8): B32B27/32B32B27/08B32B27/06B32B27/34B32B27/30B32B7/12B32B33/00B65D65/40B29C48/21
CPCB32B27/32B32B27/325B32B27/08B32B27/34B32B27/306B32B7/12B32B33/00B65D65/40B29C48/21B32B2307/558B32B2250/24B32B2307/7265B32B2307/714Y02W30/80
Inventor 胡钢王庆张惕夏大雁
Owner 江阴市格瑞包装材料有限公司