Environment-friendly inflatable puffed food packaging film

A technology of puffed food and packaging film, applied in packaging, wrapping paper, transportation and packaging, etc., can solve the problems of losing the crispy taste of puffed food, failing to meet the requirements of barrier properties, and lacking biodegradation properties, etc. The effect of increasing the barrier properties and increasing the density

Active Publication Date: 2020-04-17
GUANGDONG BAOJIALI COLOR PRINTING IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the main raw material used in this application is polyethylene resin, it is still deficient in biodegradability and does not meet environmental protection requirements. In addition, the barrier performance does not meet the requirements, and the original puffed food loses its original properties after a long storage time. Crunchy taste, resulting in the shelf life of this type of food is usually only a few months

Method used

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  • Environment-friendly inflatable puffed food packaging film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Modified graphene oxide is made by the following methods:

[0042] (1) Ultrasonic disperse 0.3g of graphene oxide in 300mL of DMF (N,N-dimethylformamide), add 112g of potassium fluoride and 15g of potassium iodide, stir evenly, raise the temperature to 100°C, and continuously drop 40mL of ring Oxychloropropane, reflux for 15 hours, centrifuge, and wash the product repeatedly with ethanol and deionized water 5-7 times to obtain a slurry;

[0043] (2) Weigh 4.5g of polyvinylpyrrolidone and add it to 22mL of the above slurry, stir magnetically for 6h, then add 7.2mL of AgNO 3 Aqueous solution (mass concentration: 31.93 / L) was quickly added to the above solution, stirred for 6 minutes, then the mixture was heated to 60°C and kept for 2 days, the reaction product was centrifuged at 8000r / min, washed 6-7 times with deionized water, Vacuum drying to obtain modified graphene oxide.

Embodiment 2

[0049] An environment-friendly inflatable puffed food packaging film, comprising sequentially compounded wear-resistant TPU layer, non-woven fabric layer and heat-sealing layer;

[0050] The packaging film is made by the following steps:

[0051] The first step is to add water-based polyurethane to deionized water, stir until dissolved, add modified graphene oxide, first stir at room temperature for 20 minutes, and then ultrasonically for 10 minutes to prepare a heat-sealing layer coating;

[0052] The heat-sealing layer coating is made of 30 parts of water-based polyurethane, 2 parts of modified graphene oxide, and 20 parts of deionized water;

[0053] The second step is to soak the non-woven fabric in an aqueous ethanol solution (60% mass fraction) for 180 minutes, then transfer to an oscillator and vibrate for 60 minutes to remove residual impurities on the surface of the non-woven fabric, and then rinse it repeatedly with deionized water for 3 times , remove residual etha...

Embodiment 3

[0059] An environment-friendly inflatable puffed food packaging film, comprising sequentially compounded wear-resistant TPU layer, non-woven fabric layer and heat-sealing layer;

[0060] The packaging film is made by the following steps:

[0061] The first step is to add water-based polyurethane to deionized water, stir until dissolved, add modified graphene oxide, first stir at room temperature for 25 minutes, and then ultrasonically for 10 minutes to prepare a heat-sealing coating;

[0062] The heat-sealing layer coating is made of 35 parts of water-based polyurethane, 2.5 parts of modified graphene oxide, and 25 parts of deionized water;

[0063] The second step is to soak the non-woven fabric in an aqueous ethanol solution (60% by mass) for 180 minutes, then transfer to an oscillator and vibrate for 60 minutes to remove residual impurities on the surface of the non-woven fabric, and then rinse it repeatedly with deionized water for 3- 4 times to remove residual ethanol, a...

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Abstract

The invention discloses an environment-friendly inflatable puffed food packaging film comprising a wear-resistant TPU layer, a non-woven fabric layer and a heat sealing layer which are sequentially compounded. The wear-resistant TPU layer is positioned on the outermost side, and the heat sealing layer is positioned on the innermost side and is in direct contact with puffed food; and the heat sealing layer is made of aqueous polyurethane and modified graphene oxide, and the wear-resistant TPU layer is made of a wear-resistant TPU coating. The non-woven fabric is used as a middle framework layerof the packaging film, and the wear-resistant TPU layer and the heat sealing layer both adopt polyurethane as main film forming substances, so that the environment-friendly requirement is met; the heat sealing layer adopts the modified graphene oxide and the aqueous polyurethane as main raw materials, so that the heat sealing layer not only has stronger barrier property and ensures the crisp taste of the puffed food, but also has good bacteriostatic property, prevents the growth of microorganisms and prolongs the shelf life of the puffed food; and the wear-resistant TPU layer is used as the outermost layer, so that the surface of the film is not prone to being ground to form small holes in the transportation process of the puffed food, the situations of air leakage and water inflow are avoided, and the quality of the puffed food is ensured.

Description

technical field [0001] The invention belongs to the technical field of food packaging, and in particular relates to an environment-friendly inflatable puffed food packaging film. Background technique [0002] At present, the puffed food on the market is popular as a kind of leisure snack. This kind of food is mostly cooked by frying, and it is crispy and delicious to eat. Due to the characteristics of this kind of food itself, it cannot be preserved for a long time in the usual environment. In order to prevent this type of food from being broken during storage and transportation and affect product quality, most of them are stored in inflatable packaging or boxed. Most of the puffed food packaging materials on the market are made of BOPP film and CPP film. become. [0003] The Chinese invention patent with the patent number CN201810779277.7 discloses a composite film for puffed food inflatable packaging suitable for plateau environments and its preparation method. It consist...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06N3/14D06N3/00B65D65/40C08G18/75C08G18/44C08G18/61C08G18/66C08G18/32
CPCB65D65/40C08G18/44C08G18/61C08G18/664C08G18/755D06N3/0011D06N3/0061D06N3/0063D06N3/145D06N2209/125D06N2209/128D06N2209/1671D06N2209/1685D06N2211/20
Inventor 李志明李志勇林璠迪李杭津肖绿微许旋琪
Owner GUANGDONG BAOJIALI COLOR PRINTING IND CO LTD
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