Flexible packaging material with oxygen adsorption function based on natural gallic acid, preparation method for the packaging material and application of the packaging material

A gallic acid and flexible packaging technology, applied in the field of packaging materials, can solve the problems of small contact area, low oxygen absorption efficiency, accidental ingestion, etc., and achieve the effects of increasing the contact area, assisting in regulating the oxygen absorption reaction rate, and improving the oxygen absorption efficiency.
CN103407259AActive Publication Date: 2013-11-27大家智合(北京)网络科技股份有限公司
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
大家智合(北京)网络科技股份有限公司
Publication Date
2013-11-27

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Abstract

The invention discloses a flexible packaging material with an oxygen adsorption function based on natural gallic acid, a preparation method for the packaging material and an application of the packaging material, and belongs to the technical field of packaging materials. The flexible packaging material comprises at least four functional structure layers. The outmost layer is an oxygen blocking layer. An oxygen adsorption layer, which comprises the gallic acid and a polyurethane binder, is below the oxygen blocking layer. An activation layer (catalyst layer), which comprises sodium carbonate and EVA resin, is below the oxygen adsorption layer. The innermost layer, below the activation layer, is a food contacting layer and also an oxygen permeating layer. On contacting water vapor, oxygen adsorption film prepared by the method starts the oxygen adsorption function and slowly generates an inert gas carbon dioxide at the same time. The packaging material is particularly suitable for storage and fresh-keeping of beer, fruit juice and sodas, and is capable of avoiding oxidization of nutritional ingredients of oxygen sensitive food and beverage, improving food quality and prolonging the shelf life.
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Description

technical field

[0001] The invention relates to a multilayer composite oxygen-absorbing film for food packaging and a preparation method thereof. More specifically, the application relates to a binder layer comprising gallic acid as an oxygen absorbing active ingredient, sodium carbonate as an activation layer, a high oxygen barrier KBOPP film as an outer layer, and a LDPE modified film as an inner layer, The invention relates to a composite film with an oxygen absorption function prepared by a dry composite method, which belongs to the technical field of packaging materials. Background technique

[0002] Oxygen is one of the main factors causing food deterioration. For foods that are very sensitive to oxygen, such as beer, juice, milk, canned food, and cooked meat, high-barrier packaging materials are required for packaging; traditional high-barrier packaging, such as glass bottles, although It has good preservation effect on beer, fruit juice and canned food, but the tran...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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