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A kind of high temperature resistant food packaging film and preparation method thereof

A technology for food packaging film and high temperature resistance, applied in the field of packaging materials, can solve problems such as trouble, harm to health, dissolution of chemical substances, etc., and achieve the effects of simple and easy preparation process, improved high temperature resistance performance, and safe and reliable use.

Active Publication Date: 2016-06-08
NANTONG TIANHE PACKING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Many packaged foods are fried foods with high temperature. If they are carried by plastic made of ordinary food packaging film, the chemical substances in the packaging film will be dissolved out, which is harmful to health. In addition, when microwave heating is required, food cannot be used directly. Packaging film to pack food for heating, very troublesome

Method used

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  • A kind of high temperature resistant food packaging film and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0010] A high-temperature-resistant food packaging film, the components and the mass fractions of each component are as follows: 4 parts of polyvinyl alcohol, 2 parts of chitosan, 0.08 parts of silicon dioxide, 0.04 parts of zeolite, 0.12 parts of glutaraldehyde, and 0.05 parts of acetic acid , 0.03 parts of magnesium stearate, 80 parts of water.

[0011] Dissolve acetic acid in water, then add chitosan, heat to 80°C, stir until completely dissolved, then add polyvinyl alcohol, silicon dioxide, zeolite, glutaraldehyde and magnesium stearate and stir to obtain a viscous sol, pour Put it into the twin-screw extruder, extrude and masticate, and blow the film. The temperatures of extrusion zones 1 to 5 are 115°C, 135°C, 155°C, 175°C, and 175°C respectively, the die temperature is 155°C, and the rotation speed is 20r / min. In the blown film process, the extrusion granulation temperature of raw materials is 135°C, 155°C, 165°C, 160°C, and the speed is 20r / min; the blown film tempera...

Embodiment 2

[0013] A high-temperature-resistant food packaging film, the components and the mass fractions of each component are as follows: 6 parts of polyvinyl alcohol, 3 parts of chitosan, 0.06 parts of silicon dioxide, 0.03 parts of zeolite, 0.16 parts of glutaraldehyde, and 0.07 parts of acetic acid , 0.02 parts of magnesium stearate, 75 parts of water.

[0014] Dissolve acetic acid in water, then add chitosan, heat to 70°C, stir until completely dissolved, then add polyvinyl alcohol, silicon dioxide, zeolite, glutaraldehyde and magnesium stearate and stir to obtain a viscous sol, pour Put it into the twin-screw extruder, extrude and masticate, and blow the film. The temperatures of extrusion zones 1 to 5 are 115°C, 135°C, 155°C, 175°C, and 175°C respectively, the die temperature is 155°C, and the rotation speed is 20r / min. In the blown film process, the extrusion granulation temperature of raw materials is 135°C, 155°C, 165°C, 160°C, and the speed is 20r / min; the blown film tempera...

Embodiment 3

[0016] A high temperature resistant food packaging film, the components and the mass fraction of each component are as follows: 48 parts of polyvinyl alcohol, 4 parts of chitosan, 0.05 part of silicon dioxide, 0.01 part of zeolite, 0.18 part of glutaraldehyde, 0.08 part of acetic acid , 0.01 part of magnesium stearate, 70 parts of water.

[0017] Dissolve acetic acid in water, then add chitosan, heat to 70~80°C, stir until completely dissolved, then add polyvinyl alcohol, silicon dioxide, zeolite, glutaraldehyde and magnesium stearate and stir to obtain a viscous sol , poured into a twin-screw extruder, extruded and plasticized, and blown film. The temperatures of extrusion zones 1 to 5 are 115°C, 135°C, 155°C, 175°C, and 175°C respectively, the die temperature is 155°C, and the rotation speed is 20r / min. In the blown film process, the extrusion granulation temperature of raw materials is 135°C, 155°C, 165°C, 160°C, and the speed is 20r / min; the blown film temperature is 130°...

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Abstract

The invention discloses a high-temperature resisting food packaging film and a preparation method thereof. The high-temperature resisting food packaging film comprises the following components in parts by weight: 4-8 parts of polyvinyl alcohol, 2-4 parts of chitosan, 0.05-0.08 part of silicon dioxide, 0.01-0.04 part of zeolite, 0.12-0.18 parts of glutaraldehyde, 0.05-0.08 part of acetic acid, 0.01-0.03 of magnesium stearate and 70-80 parts of water. The preparation method comprises the following steps: dissolving acetic acid in water, then adding chitosan, heating to 70-80 DEG C, stirring till fully dissolving, then adding the polyvinyl alcohol, the silicon dioxide, the zeolite, the glutaraldehyde and the magnesium stearate, stirring so as to obtain viscous colloidal sol, pouring into a double-screw extruder, squeezing out, plasticizing and carrying out film blowing. The high-temperature resisting food packaging film has the advantages that the selected components are safe and non-toxic, the high temperature resistance of the finished product film material can be substantially improved, so that no components seep at high temperature environments, and the food packaging film is safe and reliable and can resist the temperature of above 150 DEG C.

Description

technical field [0001] The invention belongs to the technical field of packaging materials, and in particular relates to a high-temperature-resistant food packaging film and a preparation method thereof. Background technique [0002] With the acceleration of the pace of life, more and more fast food and instant food are chosen by urban white-collar workers. Both takeaway and takeaway need to package food. At present, most fast food restaurants use wrapping paper or plastic bags to package food for takeaway. In order to achieve various effects during the processing of food packaging materials, various processing aids are often added, including plasticizers, stabilizers, antibacterial agents, crosslinking agents, etc. In recent years, food safety has attracted more and more attention. , the previous events such as the detection of plasticizers in beverage bottles and the detection of fluorescent agents in instant noodle packaging boxes have made everyone turn their attention t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L29/04C08L5/08C08K13/02C08K3/36C08K5/098C08K3/34B65D65/38
Inventor 赵平
Owner NANTONG TIANHE PACKING