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A kind of high puncture-resistant cast polyethylene film and its preparation method

A technology for casting polyethylene and high-density polyethylene, which is applied in the field of high puncture-resistant cast polyethylene film and its preparation, can solve the problems of high cost, high amount of metallocene in the puncture-resistant polyethylene film, etc. Material cost, good puncture resistance, effect of improving puncture resistance

Active Publication Date: 2021-07-23
四川厚诚新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to solve the problems of high metallocene consumption and high cost in the puncture-resistant polyethylene film of the above-mentioned prior art, and provide a cast polyethylene film with high puncture resistance, cost, and simple production process and its Manufacturing method

Method used

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  • A kind of high puncture-resistant cast polyethylene film and its preparation method
  • A kind of high puncture-resistant cast polyethylene film and its preparation method
  • A kind of high puncture-resistant cast polyethylene film and its preparation method

Examples

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Effect test

Embodiment 1

[0068] Embodiment 1 A kind of high anti-puncture cast polyethylene film

[0069] Such as figure 1 As shown, the high puncture-resistant cast polyethylene film includes a five-layer structure, which is composed of a corona layer 1, a puncture-resistant layer a2, a buffer layer 3, a puncture-resistant layer b4, and a heat-sealing layer 5 from outside to inside. Layer thickness and composition are as follows:

[0070] Example 1 corona layer Anti-puncture layer a The buffer layer Anti-puncture layer b heat seal layer Each layer thickness μm 15 8 20 8 12 The weight ratio of each layer component Dow 150E (LDPE) 50 70 Dow 35060A (HDPE) 10 30 10 Dow 5500G(mPE) 49 80 15 80 29 Dow 8150 POE 10 20 10 Blocking agent spherical SiO 2 8000 mesh

0.45 0.45 Slip agent erucamide 0.4 0.4 Static agent is Armostat1800 0.15 0.15 Mica powder 8000 mesh 29 ...

Embodiment 2

[0077] Embodiment 2 A kind of high anti-puncture cast polyethylene film

[0078] Such as figure 1 As shown, the high puncture-resistant cast polyethylene film includes a five-layer structure, which is composed of a corona layer 1, a puncture-resistant layer a2, a buffer layer 3, a puncture-resistant layer b4, and a heat-sealing layer 5 from outside to inside. Layer thickness and composition are as follows:

[0079]

[0080]

[0081] The preparation method is the same as in Example 1.

Embodiment 3

[0082] Embodiment 3 A kind of high anti-puncture cast polyethylene film

[0083] Such as figure 1 As shown, the high puncture-resistant cast polyethylene film includes a five-layer structure, which is composed of a corona layer 1, a puncture-resistant layer a2, a buffer layer 3, a puncture-resistant layer b4, and a heat-sealing layer 5 from outside to inside. Layer thickness and composition are as follows:

[0084] Example 3 corona layer Anti-puncture layer a The buffer layer Anti-puncture layer b heat seal layer Each layer thickness μm 16 7 20 7 13 The weight ratio of each layer component Shanghai Petrochemical Q201(LDPE) 60 75 Shanghai Petrochemical CH2802 (HDPE) 15 25 10 Dow 5500G(mPE) 39 70 20 80 24 Dow 8150 POE 15 20 10 Blocking agent spherical SiO 2 8000 mesh

[0085] The preparation method is the same as in Example 1.

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Abstract

The invention provides a highly puncture-resistant cast polyethylene film and a preparation method thereof. The polyethylene film has a five-layer structure, which is respectively a corona layer, a puncture-resistant layer a, a buffer layer, and a puncture-resistant layer from outside to inside. b. Composition of heat seal layer. The content of metallocene polyethylene in anti-puncture layer a / b is relatively high, which can provide good puncture resistance; high-density polyethylene in the buffer layer can provide good foundation strength, POE can increase the toughness and impact resistance of the buffer layer, mica powder It is a sheet-shaped filler. During the extrusion process, a "multi-layer scale" structure parallel to the film is formed in the buffer layer due to melt flow, and interfacial constraints are generated with polyethylene, and the puncture-resistant layer a / buffer layer / puncture-resistant layer The sandwich structure formed by b forms a synergistic effect, which improves the overall puncture resistance of the film.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to the field of packaging films, in particular to a highly puncture-resistant cast polyethylene film and a preparation method thereof. Background technique [0002] At present, the cast polyethylene film for packaging on the market is generally composed of a corona layer, a core layer and a heat-sealing layer. The layer mainly provides strength, and its performance determines the puncture resistance and stiffness of the film; the heat-sealing layer is in the inner layer of the film, and mainly provides heat-sealing strength. Through multiple extruders, the films with different formulations of each layer pass through a multi-channel composite die, after unidirectional stretching, they are combined by quenching rolls, and the multi-layer films are bonded together with adhesives and solvents. Compared with the dry composite film, it has the advantages of fast production spee...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B27/32B32B27/18B32B27/20B32B27/06B32B33/00C08L23/06C08L51/06C08K3/34C08K7/18C08K5/20C08J5/18B29C48/21B29C48/00B65D65/40
CPCB32B27/08B32B27/18B32B27/20B32B27/32B32B27/327B32B33/00B32B2307/558B32B2323/043B32B2323/046B65D65/40B29C48/0018B29C48/21C08J5/18C08J2323/06C08J2423/06C08J2451/06C08K3/34C08K5/20C08K7/18
Inventor 李健王广陈渊
Owner 四川厚诚新材料有限公司