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High puncture resistant cast polyethylene film and preparation method thereof

A technology of casting polyethylene and polyethylene film, which is applied in chemical instruments and methods, flexible coverings, packaging, etc., can solve the problems of high cost and large amount of metallocene in puncture-resistant polyethylene film, and achieve a good foundation Strength, good puncture resistance, good effect of puncture resistance

Active Publication Date: 2019-11-29
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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  • High puncture resistant cast polyethylene film and preparation method thereof
  • High puncture resistant cast polyethylene film and preparation method thereof
  • High puncture resistant cast polyethylene film and preparation method thereof

Examples

Experimental program
Comparison scheme
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 high puncture resistant cast polyethylene film and a preparation method thereof. The polyethylene film has a five-layer structure, which is composed of a corona layer, a puncture resistant layer a, a buffer layer, a puncture resistant layer b and a heat-seal layer from the outside in respectively. The puncture resistant layer a and puncture resistant layer b have a high metallocene polyethylene content, and can provide good puncture resistance; the buffer layer high density polyethylene can provide good basic strength, POE can improve the toughness and impact resistance of the buffer layer, mica powder is sheet filler, and can form a "multilayer scale" structure parallel to the film in the buffer layer because of melt flow in the extrusion process, and interface constraint can be generated together with polyethylene, and a synergistic effect can be formed together with a sandwich structure formed by the puncture resistant layer a, the buffer layer and the puncture resistant layer b, thus improving 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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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
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