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Cooking film with low temperature-resistant and anti-fogging properties and preparation method thereof

A cooking film, low temperature resistant technology, applied in chemical instruments and methods, types of packaging items, special packaging items, etc., can solve the problems of unclear food freshness, insufficient mechanical strength and toughness, ink easily falling into food, etc. Achieve the effect of good self-cleaning ability, good anti-fog performance and good hardness

Inactive Publication Date: 2018-05-04
HUBEI DEWEI PACKAGING TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] 1. When in a low-temperature refrigeration environment, the food in the retort film packaging bag will fog up, making it difficult to see whether the food in the retort film packaging bag is fresh;
[0005] 2. The existing cooking membrane has the disadvantages of poor water absorption, insufficient mechanical strength and toughness;
[0006] 3. The existing cooking film has the problems of poor barrier property and easy ink falling into food

Method used

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  • Cooking film with low temperature-resistant and anti-fogging properties and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0126] 1. Take 8.9 parts of gelatin and 80 parts of water into a bottle and mix well. Let it stand for 15 minutes to 2 hours, until the gelatin is completely swollen, heat it in a water solution at 65°C, while stirring continuously at a speed of 40-50 per minute, until the gelatin is completely dissolved (about 10 minutes).

[0127] 2. Maintain a constant temperature of 65°C, add 1 part of formaldehyde, valeraldehyde or acetaldehyde, 10 parts of sodium chloride or glycerin and 0.1 part of sodium azide, stir evenly, and then prepare it as an anti-fogging agent.

[0128] 3. Put this anti-fogging agent into a pressure sprayer quickly, spray it evenly on the surface of glass or mirror, and form an anti-fogging film after cooling. (maximum strength reached after four days)

Embodiment 2

[0130] Get 11.7 parts of gelatin, 66 parts of anhydrous liquid ammonia, 2 parts of sulfuryl fluoride or hexamine, 20 parts of magnesium chloride and 0.3 part of propylene glycol. Dissolve in a pressure vessel and shake well. Spray the anti-fog agent evenly on the surface of the glass or mirror with self-nozzle, and form an anti-fog film after drying.

Embodiment 3

[0132] 1. Take 8 parts of gelatin, 60 parts of acetic acid and 30 parts of phosphoric acid, fully swell, heat and mix well. Then add 0.5 parts of chromium alum, 1.5 parts of ethylene glycol or glycerin to prepare an anti-fogging agent.

[0133] 2. Dip the anti-fog agent with a roller brush, evenly roll it on the surface of the glass or mirror, and form an anti-fog film after drying.

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Abstract

The invention relates to a cooking film with low temperature-resistant and anti-fogging properties. The cooking film comprises a nanometer ceramic coating layer, a polypropylene resin layer, a polyurethane layer, a tetrafluoroethylene layer, an anti-fogging film layer and a plurality of adhesive layers, wherein the nanometer ceramic coating layer, the polypropylene resin layer, the polyurethane layer, the tetrafluoroethylene layer and the anti-fogging film layer are sequentially laminated; each adhesive layer is arranged between every two layers. The cooking film has the advantages that by arranging the anti-fogging film layer at the outer surface of the tetrafluoroethylene layer, when the cooking film is stored under the low-temperature storage environment, the food using a cooking film package bag has no fogging problem, so that the fresh degree of food in the cooking film package bag can be clearly observed; by adopting the nanometer ceramic material, the good hardness, breaking toughness, anti-seepage property and low-temperature elongation property are realized, the self-cleaning ability and anti-fogging property are good, and the anti-impact ability and blocking ability of the cooking film are improved.

Description

technical field [0001] The invention relates to the technical field of film packaging products, in particular to a low-temperature resistant anti-fogging retort film and a preparation method thereof. Background technique [0002] Cooking film is an advanced film product under the category of CPP protective film. It is a film material that can withstand steaming or cooking together with food and other materials, that is, an environmentally friendly film material that can withstand high temperatures and will not emit harmful gases at high temperatures. [0003] At present, there are the following problems in the cooking membrane in the prior art: [0004] 1. When in a low-temperature refrigeration environment, the food in the retort film packaging bag will fog up, making it difficult to see whether the food in the retort film packaging bag is fresh; [0005] 2. The existing cooking membrane has the disadvantages of poor water absorption, insufficient mechanical strength and t...

Claims

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Application Information

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IPC IPC(8): B32B27/08B32B27/32B32B27/40B32B3/24B32B9/00B32B9/04B32B27/12B32B27/34B32B7/12
CPCB32B27/08B29D2009/00B32B3/266B32B7/12B32B9/00B32B9/045B32B27/12B32B27/32B32B27/322B32B27/34B32B27/40B32B2255/20B32B2307/21B32B2307/306B32B2307/552B32B2307/554B32B2307/558B32B2307/7145B32B2439/70C08K5/053C08K13/02C08K2003/162C08K2003/166C08K2201/014C09D5/14C09D189/06
Inventor 蔡岩胜蔡扬龙刘桂华陈小锋
Owner HUBEI DEWEI PACKAGING TECH
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