Tearable packaging film and preparation method thereof

A technology of coating and parts by weight, which is applied in the field of casting film, can solve the problems of consumers who are inconvenient to tear the coating, difficult to tear continuously, and unable to tear the coating, so as to reduce the risk of bacterial infection and reduce the risk of tearing. The effect of cracking strength and strong inhibition

Active Publication Date: 2019-09-06
天津登峰卫生用品材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The film used for packaging sanitary products can be obtained by casting film. The existing film is not easy to tear because of its high tear strength. Consumers are inconvenient to tear the envelope

Method used

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  • Tearable packaging film and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A preparation method of tearable film, comprising the following steps:

[0028] S1: Mixing and extrusion plasticization: According to the ratio of parts by weight, 12 parts of LDPE, 17 parts of LLDPE, 52 parts of HDPE, 13 parts of PP, 3 parts of metallocene polyethylene, 0.5 parts of lubricant, 1.8 parts of dispersant, antibacterial 4 parts of antimicrobial agent, 3 parts of crystal nucleating agent, and 2 parts of color masterbatch are evenly mixed and put into the extruder; among them, the antibacterial agent includes 0.5 parts of tea polyphenol and 5 parts of chitin fiber; the crystal nucleating agent includes dibenzylidene 3 parts of sorbitol, 4 parts of p-hydroxybenzoic acid, 2 parts of poly-4-methoxy-4'-acryloyloxybenzoic acid phenyl ester; then adjust the temperature of the extruder to 160 °C and keep it for 25 minutes to plasticize ,extrusion;

[0029] S2: Extrusion casting: connect, filter, and cast in sequence, wherein the temperature of the connecting proces...

Embodiment 2

[0033] A preparation method of tearable film, comprising the following steps:

[0034] S1: Mixing and extrusion plasticization: according to the weight ratio, 16 parts of LDPE, 14 parts of LLDPE, 56 parts of HDPE, 11 parts of PP, 4 parts of metallocene polyethylene, 1.5 parts of lubricant, 1.2 parts of dispersant, antibacterial 6 parts of antimicrobial agent, 2 parts of crystallization nucleating agent, and 4 parts of color masterbatch are evenly mixed and put into the extruder; among them, the antibacterial agent includes 1.8 parts of tea polyphenol, 3 parts of chitin fiber; the crystallization nucleating agent includes dibenzylidene 4.5 parts of sorbitol, 2.5 parts of p-hydroxybenzoic acid, 3.5 parts of poly-4-methoxy-4'-acryloyloxybenzoic acid phenyl ester; then adjust the temperature of the extruder to 165 °C and keep it for 30 minutes to plasticize ,extrusion;

[0035] S2: Extrusion casting: connect, filter, and cast processes in sequence, wherein the temperature of the ...

Embodiment 3

[0039] A preparation method of tearable film, comprising the following steps:

[0040]S1: Mixing and extruding plasticization: According to the ratio of parts by weight, 19 parts of LDPE, 10 parts of LLDPE, 65 parts of HDPE, 8 parts of PP, 5 parts of metallocene polyethylene, 2 parts of lubricant, 0.3 parts of dispersant, antibacterial 8 parts of antimicrobial agent, 0.5 part of crystal nucleating agent, and 5 parts of color masterbatch are evenly mixed and put into the extruder; among them, antibacterial agent includes 3 parts of tea polyphenol, 1 part of chitin fiber; crystal nucleating agent includes dibenzylidene 6 parts of sorbitol, 1 part of p-hydroxybenzoic acid, 2 parts of poly-4-methoxy-4'-acryloyloxybenzoic acid phenyl ester; then adjust the temperature of the extruder to 170 ° C and keep it for 35 minutes to plasticize ,extrusion;

[0041] S2: Extrusion casting: connect, filter, and cast in sequence, wherein the temperature of the connecting process is 205°C; the t...

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Abstract

The invention relates to a tearable packaging film and a preparation method thereof, and belongs to the technical field of cast films. The raw materials for preparing the tearable packaging film include, by weight, LDPE, LLDPE, HDPE, PP, metallocene polyethylene, a lubricant, a dispersant, an antibacterial agent and a crystallization nucleating agent, wherein the antibacterial agent comprises teapolyphenols and chitin fibers; and the crystallization nucleating agent comprises dibenzylidene sorbitol, p-hydroxybenzoic acid and poly(phenyl 4-methoxyl-4'-acryloyloxybenzoate). The invention also discloses the preparation method of the tearable packaging film. The preparation method comprises the following steps: S1, mixing, and extrusion plasticizing; S2, extrusion casting; S3, calendering setting; and S4, corona, trimming and rolling. The packaging film is convenient to tear.

Description

technical field [0001] The invention relates to the technical field of casting films, in particular to a tearable film and a preparation method thereof. Background technique [0002] Cast film is a non-stretched, non-oriented flat film produced by melt casting and quenching. It is widely used in textiles, flowers, food, daily necessities, hygiene products packaging and other fields. [0003] The film used for packaging sanitary products can be obtained by casting film. The existing film is not easy to tear because of its high tear strength. Consumers are inconvenient to tear the envelope. In order to meet the needs of cast film in practical application, a film that is easy to tear is designed. Contents of the invention [0004] The first object of the present invention is to provide a tearable envelope to achieve the effect of easy tearing of the envelope. [0005] Above-mentioned purpose of the present invention is achieved through the following technical solutions: ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/06C08L23/08C08L23/12C08L5/08C08L33/14C08K5/1575C08K5/13C08K5/1545C08J5/18
CPCC08J5/18C08J2323/06C08J2423/08C08J2423/06C08J2423/12C08J2405/08C08J2433/14C08K5/1575C08K5/13C08K5/1545
Inventor 张倩
Owner 天津登峰卫生用品材料有限公司
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