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Method for preparing grease resistant food wrapping paper

A food wrapping paper, anti-grease technology, applied in the direction of special paper, textiles, papermaking, paper, etc., can solve the problems of high cost, changing food flavor, failure to provide single-layer paper-based wrapping paper oil-proof performance, etc., to achieve Low cost, good oil and water resistance

Active Publication Date: 2012-10-10
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The oil-proof paper in the above patents fails to provide the oil-proof performance of single-layer paper-based wrapping paper, and the cost is high and the production is complicated
[0005] Fluorocarbon coating can improve oil resistance and is used in the production of oil-resistant packaging paper, but fluorocarbons are too expensive, harmful to the human body and will change the flavor of food, so they are not suitable for use in food packaging materials

Method used

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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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Preparation of anti-grease coating: Dissolve 5 grams of chitosan, 5 ml of acetic acid and 20 grams of sodium alginate in deionized water and stir evenly to prepare 1000ml (about 1000 grams) of anti-grease coating crude product. In, the weight percentage of chitosan is controlled at 0.5%, the volume percentage of acetic acid is controlled at 0.5%; the weight percentage of sodium alginate is controlled at 2%;

[0017] Vacuum degassing: use a vacuum degasser to degas the coarse material of the anti-grease coating to obtain a finished anti-grease coating; the vacuum degree of vacuum degassing is 0.02-0.05MPa;

[0018] Coating: choose 60 ~ 90g / m 2 The packaging base paper, the finished anti-grease coating is coated on one side of the packaging base paper, and the coating amount of the finished anti-grease coating is 5g / m 2 , to obtain the wet material of anti-grease food packaging paper;

[0019] Drying: Put the wet material of the anti-grease food packaging paper into a t...

Embodiment 2

[0022] Preparation of anti-grease coating: Dissolve 30 grams of chitosan, 20 ml of acetic acid and 1 gram of sodium alginate in deionized water and stir evenly to prepare 1000 ml (about 1000 grams) of anti-grease coating crude product. In, the weight percentage of chitosan is controlled at 3%, the volume percentage of acetic acid is controlled at 2%; the weight percentage of sodium alginate is controlled at 0.1%;

[0023] Vacuum degassing: use a vacuum degasser to degas the coarse material of the anti-grease coating to obtain a finished anti-grease coating; the vacuum degree of vacuum degassing is 0.02-0.05MPa;

[0024] Coating: choose 60 ~ 90g / m 2 The packaging base paper, the finished anti-grease coating is coated on one side of the packaging base paper, and the coating amount of the finished anti-grease coating is 2g / m 2 , to obtain the wet material of anti-grease food packaging paper;

[0025] Drying: Put the wet material of the anti-grease food packaging paper into a te...

Embodiment 3

[0028] Preparation of anti-grease coating: Dissolve 100g of chitosan, 100ml of acetic acid and 100g of sodium alginate in deionized water and stir evenly to make 1000ml (about 1000g) of crude anti-grease coating. In, the weight percentage of chitosan is controlled at 10%, the volume percentage of acetic acid is controlled at 10%; the weight percentage of sodium alginate is controlled at 10%;

[0029] Vacuum degassing: use a vacuum degasser to degas the coarse material of the anti-grease coating to obtain a finished anti-grease coating; the vacuum degree of vacuum degassing is 0.02-0.05MPa;

[0030] Coating: choose 60 ~ 90g / m 2 The packaging base paper, the finished anti-grease coating is coated on one side of the packaging base paper, and the coating amount of the finished anti-grease coating is 10g / m 2 , to obtain the wet material of anti-grease food packaging paper;

[0031] Drying: put the wet material of the anti-grease food packaging paper into a temperature-controllabl...

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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PUM

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Abstract

The invention discloses a method for preparing grease resistant food wrapping paper. The method comprises the following steps of: preparing a grease resistant coating, performing vacuum degassing, coating grease resistant coating according to a ratio of 2 to 10 g / m<2> and drying at the temperature of between 60 and 110 DEG C. In a crude product of the grease resistant coating, the weight content of chitosan is controlled to be between 0.5 and 10 percent; and in the crude product of the prepared grease resistant coating, the weight content of chitosan is between 0.5 and 10 percent, the volume content of acetic acid is between 0.5 and 10 percent, and the weight content of sodium alginate is between 0.1 and 10 percent. In the grease resistant food wrapping paper obtained by the method, a grease resistant value is between 8 and 11, and the grease resistant food wrapping paper has the advantages of low cost, environment friendliness, high oil resistance and water resistance, no toxicity and the like.

Description

technical field [0001] The invention discloses a preparation method of oil-resistant food wrapping paper, which belongs to the technical field of coating wrapping paper preparation. Background technique [0002] In the field of food packaging, especially for the packaging of some oily items, most manufacturers tend to use plastics as raw materials. However, in the process of garbage disposal, plastics are difficult to decompose after being landfilled, and toxic gases are released after incineration. The development of degradable plastics has become the focus of current scientific and technological research. However, due to material and technical problems, the current degradable plastics still cannot be completely degraded, and the cost is high, so they have not yet been put into large-scale production and use. [0003] At present, there are degradable food packaging films made of natural biological materials such as soybean protein for oily food packaging, but edible packa...

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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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D21H27/00D21H17/63
Inventor 龙柱彭慧
Owner JIANGNAN UNIV