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Flame-retardant heat shrinkable film and manufacturing method thereof

A technology of heat shrinkable film and manufacturing method, which is applied in the field of flame retardant materials, can solve the problems of wide application range, single performance of heat shrinkable film, and inability to be flame retardant, and achieve good dimensional stability, high hardness, and flame retardant effects Good results

Inactive Publication Date: 2018-10-12
NINGGUO QIANHONG ELECTRONIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the current packaging industry, the demand for heat-shrinkable films is increasing, and the scope of application is not short. Need a heat shrinkable film with good flame retardant performance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A flame-retardant heat-shrinkable film, comprising the following materials in parts by weight:

[0029] PET resin 65%, phosphate ester 5%, hindered amine light stabilizer 3%, phosphite antioxidant 2%, zinc stearate 6%, brominated polystyrene 6%, silicon-containing flame retardant epoxy resin 10 % and fatty alcohol polyoxyethylene ether 3%;

[0030] The manufacture method of this flame-retardant heat-shrinkable film comprises the following steps:

[0031] 1) Weigh the above-mentioned raw materials; put them into a reaction kettle, stir and react at 260° C. for 6 hours to obtain a polymerized melt at a stirring speed of 200 rpm, then extrude the polymerized melt to granulate, and dry to obtain PET chips;

[0032] 2) Melting and extruding the PET chip obtained in step 1), stretching the cast sheet, cooling and shaping to obtain a PET flame-retardant heat-shrinkable film, and the stretching temperature is 140°C.

Embodiment 2

[0034] A flame-retardant heat-shrinkable film, comprising the following materials in parts by weight:

[0035] PET resin 60%, phosphate ester 7%, hindered amine light stabilizer 3%, phosphite antioxidant 2%, zinc stearate 6%, brominated polystyrene 10%, silicon-containing flame retardant epoxy resin 10% % and fatty alcohol polyoxyethylene ether 2%;

[0036] The manufacture method of this flame-retardant heat-shrinkable film comprises the following steps:

[0037] 1) Weigh the above-mentioned raw materials; put them into a reaction kettle, stir and react at 250° C. for 6 hours to obtain a polymerized melt at a stirring speed of 180 rpm, then extrude the polymerized melt to granulate, and dry to obtain PET chips;

[0038] 2) Melting and extruding the PET chip obtained in step 1), stretching the cast sheet, cooling and shaping to obtain a PET flame-retardant heat-shrinkable film, and the stretching temperature is 130°C.

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PUM

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Abstract

The invention provides a flame-retardant heat-shrinkable film comprising the following materials by weight: 55-65% of PET resin, 4-7% of a plasticizer, 1-5% of a light stabilizer, 1-2% of an antioxidant, 5 to 6% of a lubricant, 5 to 10% of a bromine-based flame retardant, 5 to 10% of flame retardant epoxy resin, and 1 to 3% of an antistatic agent. The flame-retardant heat-shrinkable film uses twoflame retardants as raw materials which are respectively the bromine-based flame retardant and the flame-retardant epoxy resin, and the prepared flame-retardant heat-shrinkable film has good the flame-retardant effect due to excellent performance.

Description

technical field [0001] The invention relates to a flame retardant material, in particular to a flame retardant heat shrinkable film and a manufacturing method. Background technique [0002] In the current packaging industry, the demand for heat-shrinkable films is increasing, and the scope of application is not short. There is a need for a heat shrinkable film with good flame retardancy. . Contents of the invention [0003] One of the technical problems to be solved by the present invention is to improve the flame retardancy of the heat-shrinkable film, and the second problem is to provide a method for manufacturing the flame-resistant heat-shrinkable film. [0004] The present invention adopts the following technical solutions to solve the above-mentioned technical problems: [0005] A flame-retardant heat-shrinkable film, comprising the following materials in parts by weight: [0006] PET resin 55-65% [0007] Plasticizer 4-7% [0008] Light stabilizer 1-5% [000...

Claims

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Application Information

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IPC IPC(8): C08L67/02C08L63/00C08L71/02C08L25/06C08K5/00C08K5/524C08K5/521C08K5/098C08J5/18
CPCC08L67/02C08J5/18C08J2367/02C08J2425/06C08J2463/00C08J2471/02C08L2201/02C08L2205/035C08L63/00C08L71/02C08L25/06C08K5/00C08K5/524C08K5/521C08K5/098
Inventor 唐千军
Owner NINGGUO QIANHONG ELECTRONIC CO LTD
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