CN103819749A - Preparation method of degradable packing material for food - Google Patents

Abstract

The invention discloses a preparation method of a degradable packing material for food. The degradable packing material prepared by the method disclosed by the invention is high in the strength, good in the tenacity and good in the air permeability as the vegetable starch is used as a main raw material, konjak sol and bamboo fibers are used as auxiliary materials, and a moderate additive is added. The packing material has the characteristics of safety, no toxicity or harm, environment protection, and the like. In addition, as the raw materials added are food grade, even if permeation happens, the food cannot be polluted. Therefore, the packing material can be used for packing food such as candies, desserts, pancakes and fried food.

Description

A kind of preparation method of degradable food packaging material

Technical field

The present invention relates to field of packaging material, relate in particular to a kind of preparation method of degradable food packaging material.

Background technology

At present to adopt the plastics such as polystyrene be base material to packaging material for food, because it is difficult to decompose in physical environment, with after become waste accumulation, become one of primary pollution source of city productive life environment, caused the attention of various countries.Along with petroleum resources growing tension, shortage, therefore the petrochemicals take oil as raw material are subject to severe impact.In petrochemicals, plastics are because amount is large and be difficult for the characteristic of degrading, and in various countries, common recovery method is to bury or burn, and energy consumption is large, has increased the weight of again the pollution again of environment.The annual number that industrial production is brought is particularly serious with industrial plastic packing material, the waste environmental pollution of ten thousand tons, garbage-cleaning classification is processed and is expended a large amount of financial resources and Energy resources, directly bury and can make a large amount of soils, soil therefore harden, cause environmental destruction.Therefore environment department of various countries classifies its processing as keypoint treatment object.

For overcoming this problem, the packing material that Chinese invention patent application discloses the manufacture method of phytosynthesis food packaging film and produces by this method on November 9th, 1994 for No. 93115669.6, this invention is by Semen Maydis powder according to a certain ratio, sticky rice flour, quick-acting sparklets and distilled water are placed in container and stir, add again a certain proportion of edible Gelatinum oxhide and glycerine after above-mentioned compound foaming after, stir, after being entered to mould, the raw material that is flow-like after stirring puts baking oven baking certain hour into, then from mould, taking out the packing film processing puts into by paraffin, in the solution of polyethylene alcohol and water composition, soak, become available food package box, after the packing material recovery that adopts this invention to produce, can be processed into animal feed or agricultural organic fertilizer, but this patent application production process is more, be difficult to raise the efficiency.

Summary of the invention

The object of the invention is to propose a kind of preparation method of degradable food packaging material, by the improvement of the component to wrapping material, make good mechanical property, meet food product pack demand, and can natural degradation, good environmental protection, to overcome the defect of prior art.

For reaching this object, the present invention by the following technical solutions:

A kind of preparation method of degradable food packaging material, described wrapping material are made up of following component in weight part: 100 parts of plant amylums, konjac sol 20-24 part, bamboo fibers 12-14 part, ethylene-acrylic acid plastics 8-10 part, silica powder 6-8 part, dioctyl maleate 6-8 part, Viscotrol C 3-5 part; Glycerine 2-4 part, silane coupling agent 2-4 part, wherein said length of bamboo fibre is 4-6mm, the preparation method of konjac sol is: take respectively Rhizoma amorphophalli glucomannan, carrageenin, soybean protein isolate, three is added to the water dissolving according to the ratio of 10-12g/L, 18-22g/L, 20-22g/L, stirs and leave standstill swelling 3.5-4.5 hour to obtain konjac sol; The preparation method of described wrapping material is:

1) above-mentioned component is added in homogenizer by proportioning, add a small amount of 20-30 part water, then at 55-65 ℃, high-speed stirring is disperseed 50-70 minute;

2) degassed: utilize ultrasonic degas machine ultrasonic degas 10-15min under 200-400W,

3) molding drying: at 55-65 ℃, roll-forming makes film, by film be positioned in 60-70 ℃ of baking oven, dry to water ratio be 4-6%;

4) wax, dry: the film after taking-up is dried, after room temperature is cooling, is sprayed at the edible paraffin of melting the tow sides of film, hang airing.

Beneficial effect of the present invention is:

Degradable food packaging material prepared by the inventive method, take plant amylum as main raw material, adding konjac sol and bamboo fibers is auxiliary material, be equipped with appropriate additive, make the wrapping material intensity of preparation high, good toughness, and there is ventilation property, these wrapping material have the features such as safety non-toxic evil, environmental protection; The various raw materials that simultaneously add are food grade, even if there is the phenomenon of osmosis also can contaminated food products, can be used as the wrapping material of candy, dessert, thin pancake and the food such as fried.

Embodiment

Embodiment mono-

A preparation method for degradable food packaging material, described wrapping material are made up of following component in weight part: 100 parts of plant amylums, 20 parts of konjac sols, 14 parts of bamboo fiberss, 8 parts, ethylene-acrylic acid plastics, 8 parts of silica powders, 6 parts of dioctyl maleates, 5 parts of Viscotrol C; 2 parts of glycerine, 4 parts of silane coupling agents, wherein said length of bamboo fibre is 4-6mm, the preparation method of konjac sol is: take respectively Rhizoma amorphophalli glucomannan, carrageenin, soybean protein isolate, three is added to the water dissolving according to the ratio of 10g/L, 22g/L, 20g/L, stirs and leave standstill swelling 4.5 hours to obtain konjac sol; The preparation method of described wrapping material is:

1) above-mentioned component is added in homogenizer by proportioning, add 20 parts of a small amount of water, then at 65 ℃, high-speed stirring is disperseed 50 minutes;

2) degassed: utilize ultrasonic degas machine ultrasonic degas 15min under 200W,

3) molding drying: at 55 ℃, roll-forming makes film, by film be positioned in 70 ℃ of baking ovens, dry to water ratio be 4%;

4) wax, dry: the film after taking-up is dried, after room temperature is cooling, is sprayed at the edible paraffin of melting the tow sides of film, hang airing.

Embodiment bis-

A preparation method for degradable food packaging material, described wrapping material are made up of following component in weight part: 100 parts of plant amylums, 24 parts of konjac sols, 12 parts of bamboo fiberss, 10 parts, ethylene-acrylic acid plastics, 6 parts of silica powders, 8 parts of dioctyl maleates, 3 parts of Viscotrol C; 4 parts of glycerine, 2 parts of silane coupling agents, wherein said length of bamboo fibre is 4-6mm, the preparation method of konjac sol is: take respectively Rhizoma amorphophalli glucomannan, carrageenin, soybean protein isolate, three is added to the water dissolving according to the ratio of 12g/L, 18g/L, 22g/L, stirs and leave standstill swelling 3.5 hours to obtain konjac sol; The preparation method of described wrapping material is:

1) above-mentioned component is added in homogenizer by proportioning, add 30 parts of a small amount of water, then at 55 ℃, high-speed stirring is disperseed 70 minutes;

2) degassed: utilize ultrasonic degas machine ultrasonic degas 10min under 400W,

3) molding drying: at 65 ℃, roll-forming makes film, by film be positioned in 60 ℃ of baking ovens, dry to water ratio be 6%;

4) wax, dry: the film after taking-up is dried, after room temperature is cooling, is sprayed at the edible paraffin of melting the tow sides of film, hang airing.

Embodiment tri-

A preparation method for degradable food packaging material, described wrapping material are made up of following component in weight part: 100 parts of plant amylums, 22 parts of konjac sols, 13 parts of bamboo fiberss, 9 parts, ethylene-acrylic acid plastics, 7 parts of silica powders, 7 parts of dioctyl maleates, 4 parts of Viscotrol C; 3 parts of glycerine, 3 parts of silane coupling agents, wherein said length of bamboo fibre is 4-6mm, the preparation method of konjac sol is: take respectively Rhizoma amorphophalli glucomannan, carrageenin, soybean protein isolate, three is added to the water dissolving according to the ratio of 11g/L, 20g/L, 21g/L, stirs and leave standstill swelling 4 hours to obtain konjac sol; The preparation method of described wrapping material is:

1) above-mentioned component is added in homogenizer by proportioning, add 25 parts of a small amount of water, then at 60 ℃, high-speed stirring is disperseed 55 minutes;

2) degassed: utilize ultrasonic degas machine ultrasonic degas 13min under 300W,

3) molding drying: at 60 ℃, roll-forming makes film, by film be positioned in 65 ℃ of baking ovens, dry to water ratio be 5%;

4) wax, dry: the film after taking-up is dried, after room temperature is cooling, is sprayed at the edible paraffin of melting the tow sides of film, hang airing.

Claims (1)

1. the preparation method of a degradable food packaging material, it is characterized in that, described wrapping material are made up of following component in weight part: 100 parts of plant amylums, konjac sol 20-24 part, bamboo fibers 12-14 part, ethylene-acrylic acid plastics 8-10 part, silica powder 6-8 part, dioctyl maleate 6-8 part, Viscotrol C 3-5 part; Glycerine 2-4 part, silane coupling agent 2-4 part, wherein said length of bamboo fibre is 4-6mm, the preparation method of konjac sol is: take respectively Rhizoma amorphophalli glucomannan, carrageenin, soybean protein isolate, three is added to the water dissolving according to the ratio of 10-12g/L, 18-22g/L, 20-22g/L, stirs and leave standstill swelling 3.5-4.5 hour to obtain konjac sol; The preparation method of described wrapping material is:

1) above-mentioned component is added in homogenizer by proportioning, add a small amount of 20-30 part water, then at 55-65 ℃, high-speed stirring is disperseed 50-70 minute;

2) degassed: utilize ultrasonic degas machine ultrasonic degas 10-15min under 200-400W,

3) molding drying: at 55-65 ℃, roll-forming makes film, by film be positioned in 60-70 ℃ of baking oven, dry to water ratio be 4-6%;

4) wax, dry: the film after taking-up is dried, after room temperature is cooling, is sprayed at the edible paraffin of melting the tow sides of film, hang airing.