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Environment-friendly high-barrier packaging material and preparation method thereof

An environmentally friendly and packaging material technology, applied in the field of packaging materials, can solve the problems of difficult to use food packaging with long shelf life and short service life, and achieve excellent barrier effect, excellent barrier performance and extended service life.

Active Publication Date: 2022-07-15
广东正一包装股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] For example, Chinese patent 201911281781.5 discloses a long-lasting fresh-keeping and antibacterial food packaging material, Chinese patent 201610641098.8 discloses a convenient food packaging material, and 202011072972.3 discloses a color-changing edible food packaging film. Degraded raw materials are used as the main material to prepare environmentally friendly food packaging materials. This kind of packaging material has a short service life and is difficult to be used for food packaging with a long shelf life

Method used

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  • Environment-friendly high-barrier packaging material and preparation method thereof
  • Environment-friendly high-barrier packaging material and preparation method thereof
  • Environment-friendly high-barrier packaging material and preparation method thereof

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preparation example Construction

[0056] Correspondingly, the present invention also provides a preparation method of an environment-friendly high-barrier packaging material, the method is used for preparing the above-mentioned environment-friendly high-barrier packaging material, and the method comprises the following steps:

[0057] (1) Preparation of raw materials for the photodegradable layer: mixing the raw materials of the photodegradable layer evenly under light-shielding conditions to obtain a first raw material;

[0058] (2) Raw material preparation of the base layer: mix acrylic acid and toughening agent evenly, then add metal-modified polyvinyl alcohol and filler to fully mix to obtain the second raw material;

[0059] (3) Preparation of the raw materials of the first barrier layer: the starch-modified polyvinyl alcohol and the hydroxy fatty acid ester are mixed uniformly to obtain the third raw material;

[0060] (4) obtaining a composite film layer formed by the first raw material, the second raw ...

Embodiment

[0070] Example Group A Environmentally Friendly High Barrier Packaging Materials

[0071] The formulations of the environment-friendly high-barrier packaging materials of this example group are shown in the following table.

[0072]

[0073] Preparation method of environment-friendly high-barrier packaging material of embodiment group B

Embodiment B1

[0075] The preparation method of the environment-friendly high-barrier packaging material of the present embodiment comprises the following steps:

[0076] (1) Preparation of raw materials for the photodegradable layer: mixing the raw materials of the photodegradable layer evenly under light-shielding conditions to obtain a first raw material;

[0077] (2) Preparation of the raw materials of the base layer: mix acrylic acid and toughening agent evenly, then add metal-modified polyvinyl alcohol and filler to fully mix to obtain the second raw material;

[0078] (3) Preparation of the raw materials of the first barrier layer: the starch-modified polyvinyl alcohol and the hydroxy fatty acid ester are mixed uniformly to obtain the third raw material;

[0079] (4) obtaining a composite film layer formed by the first raw material, the second raw material and the third raw material by a co-extrusion method or a film blowing method, and the composite film layer is a photodegradable la...

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Abstract

The invention relates to the technical field of packaging materials. The environment-friendly high-barrier packaging material comprises a photodegradation layer, a base layer, a first barrier layer and a second barrier layer which are sequentially arranged, raw materials of the photodegradation layer comprise a photodegradation agent and polyethylene, an irreversible color-changing layer is arranged on the surface of the photodegradation layer, and the irreversible color-changing layer is changed into light color or transparent color from dark color under the color-changing condition; the base layer comprises the following raw materials: acrylic acid, metal modified polyvinyl alcohol, a filler and a flexibilizer; the raw materials of the first barrier layer comprise starch modified polyvinyl alcohol and hydroxy fatty acid ester; the raw materials of the second barrier layer are aluminum elementary substance, copper elementary substance and oxygen, and the second barrier layer is arranged on the first barrier layer in a vacuum coating mode. The packaging material achieves the effects of high barrier and long service life through the photodegradation layer, the base layer, the first barrier layer and the second barrier layer, and can be applied to packaging of food with long shelf life.

Description

technical field [0001] The invention relates to the technical field of packaging materials, in particular to an environment-friendly high-barrier packaging material and a preparation method thereof. Background technique [0002] Packaging materials are more widely used in various fields, especially in the food field. Based on food preservation requirements, oil penetration resistance requirements, etc., there are various requirements for packaging materials for different types of food. At present, most of the packaging materials used for food with a long shelf life are not friendly to the environment, such as sausage, starch, Dried beans, etc., have a shelf life of up to one or two years. This is because products with a long shelf life have high barrier properties and high stability requirements for packaging materials, and the existing degradable food packaging materials are usually biodegradable materials. If they are not stored properly, the service life of the degradabl...

Claims

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Application Information

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IPC IPC(8): B65D65/46B65D65/40B32B27/08B32B27/06B32B27/32B32B27/30B32B27/18B32B27/20B32B33/00C08L29/04C08L63/00C08L23/06C08K5/00C08K5/098B29C55/28C23C14/24C23C14/08C23C14/20
CPCB65D65/466B65D65/40B32B27/08B32B27/32B32B27/306B32B27/18B32B27/20B32B33/00C08L29/04C08K5/0091C08K5/098B29C55/28C23C14/24C23C14/08C23C14/0021C23C14/20B65D2565/387B65D2565/381B32B2307/7242B32B2307/7145B32B2439/70C08L63/00C08L23/06Y02W90/10
Inventor 杨品忠庞柳明许伟民
Owner 广东正一包装股份有限公司
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