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Oil-proof and antibacterial food packaging film

A food packaging film and oil-proof technology, applied in coatings and other directions, can solve problems such as oil pollution, achieve the effects of preventing oil penetration, increasing compactness, and inhibiting bacterial growth

Inactive Publication Date: 2019-01-04
含山县金中环装饰材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] There are various types and characteristics of plastic films, and they are resistant to extrusion and easy to carry. Therefore, plastic films are becoming more and more popular. At present, most food packaging is also packaged in plastic bags, which are easy to use. , the price is low, but for foods with high oil content, use ordinary packaging bags for packaging, and the oil will seep through the plastic bags and cause pollution, so the packaging bags are required to have better oil-proof properties
[0003] The existing patent document CN 107458057 A discloses an oil-proof PE fresh-keeping film. It specifically discloses that the fresh-keeping film has a three-layer structure, which can effectively prevent oil from seeping out, keep the bag in a moist state, and effectively prevent food from dehydrating. It will also create a good living environment for bacteria and promote the growth of bacteria, thereby shortening the shelf life of food and causing a lot of economic losses

Method used

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  • Oil-proof and antibacterial food packaging film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] An oil-proof and antibacterial food packaging film, made of the following raw materials in parts by weight: polyethylene terephthalate 32, modified polypropylene 25, polytetrafluoroethylene 21, modified chitosan 7, ethylene glycol Base methyl cellulose 2.2, cinnamaldehyde 1.3.

[0025] For the modified polypropylene, heat the polypropylene to 180°C in vacuum, stir until fully melted, add a tartaric acid solution of 6% by weight of the polypropylene, stir evenly, keep it warm for 10 minutes, and then add the colorless nano-silver solution in an amount of poly 0.4% by weight of propylene, continue to increase the temperature to 200°C, stir in vacuum for 20 minutes, decompress to normal pressure, place in an extruder and extrude into pellets to obtain modified polypropylene.

[0026] Described tartaric acid solution, concentration is 3g / L, and temperature is 40 ℃.

[0027] Described modified chitosan, chitosan is added in the acetic acid solution that volume fraction is 1...

Embodiment 2

[0038] An oil-proof and antibacterial food packaging film, made of the following raw materials in parts by weight: polyethylene terephthalate 33, modified polypropylene 26, polytetrafluoroethylene 22, modified chitosan 8, ethylene glycol Base methyl cellulose 2.3, cinnamaldehyde 1.4.

[0039] For the modified polypropylene, heat the polypropylene to 185°C in vacuum, stir until fully melted, add tartaric acid solution with 7% weight of polypropylene, stir evenly, keep warm for 12min, then add colorless nano-silver solution in an amount of poly 0.5% of the weight of propylene, continue to increase the temperature to 210 ° C, stir in vacuum for 25 minutes, decompress to normal pressure, place in an extruder and extrude into pellets to obtain modified polypropylene.

[0040]Described tartaric acid solution, concentration is 4g / L, and temperature is 45 ℃.

[0041] Described modified chitosan, chitosan is added in the acetic acid solution that volume fraction is 1%, heat and stir u...

Embodiment 3

[0052] An oil-proof and antibacterial food packaging film, made of the following raw materials in parts by weight: polyethylene terephthalate 34, modified polypropylene 27, polytetrafluoroethylene 23, modified chitosan 9, ethylene glycol Base methyl cellulose 2.4, cinnamaldehyde 1.5.

[0053] For the modified polypropylene, heat the polypropylene to 190°C in vacuum, stir until fully melted, add tartaric acid solution with 8% weight of polypropylene, stir evenly, keep warm for 15min, then add colorless nano-silver solution in an amount of poly 0.6% of the weight of propylene, continue to increase the temperature to 220 ° C, stir in vacuum for 30 minutes, decompress to normal pressure, place in an extruder and extrude into pellets to obtain modified polypropylene.

[0054] Described tartaric acid solution, concentration is 5g / L, and temperature is 50 ℃.

[0055] Described modified chitosan, chitosan is added in the acetic acid solution that volume fraction is 1%, heat and stir ...

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Abstract

The invention mainly relates to the technical field of thin film processing, and discloses an oil-proof and antibacterial food packaging film which is prepared from, by weight, 32-34 parts of polyethylene glycol terephthalate, 25-27 parts of modified polypropylene, 21-23 parts of polytetrafluoroethylene, 7-9 parts of modified chitosan, 2.2-2.4 parts of hydroxyethyl methylcellulose and 1.3-1.5 parts of cinnamyl aldehyde. The oil-proof and antibacterial food packaging film is high in strength, high in oil stain resistance, oil stain permeability can be effectively prevented, antibacterial rate reaches 89.4%, bacteria breeding on the surface of food can be effectively avoided, the shelf life of the food is prolonged, the polyethylene glycol terephthalate, the modified polypropylene and the polytetrafluoroethylene are mixed, molten and combined each other, the strength of the packaging film can be enhanced, the packaging film is resistant to scratch and abrasion, safe and free from toxicity and can be repeatedly used after being cleaned, cost is saved, and environments are protected.

Description

technical field [0001] The invention mainly relates to the technical field of film processing, in particular to an oil-proof and antibacterial food packaging film. Background technique [0002] There are various types and characteristics of plastic films, and they are resistant to extrusion and easy to carry. Therefore, plastic films are becoming more and more popular. At present, most food packaging is also packaged in plastic bags, which are easy to use. , the price is low, but for food with high oil content, if it is packaged in an ordinary packaging bag, the oil will seep through the plastic bag and cause pollution, so the packaging bag needs to have better oil-proof properties. [0003] The existing patent document CN 107458057 A discloses an oil-proof PE fresh-keeping film. It specifically discloses that the fresh-keeping film has a three-layer structure, which can effectively prevent oil from seeping out, keep the bag in a moist state, and effectively prevent food fro...

Claims

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Application Information

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IPC IPC(8): C08L67/02C08L23/12C08L27/18C08L1/28C08K3/08C08K5/07C08J5/18C08J7/04
CPCC08J5/18C08J7/0427C08J2367/02C08J2405/08C08K5/07C08K2003/0806C08K2201/011
Inventor 郭坤
Owner 含山县金中环装饰材料有限公司
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