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Polyethylene film for automatic packaging and preparation method thereof

A polyethylene film and automatic packaging technology, applied in the field of polyethylene film, can solve the problems of low bag breaking rate, poor thermal adhesive strength and impact strength, and high bag breaking rate

Active Publication Date: 2018-11-09
青岛东海包装产业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] This high-strength anti-static polyethylene film has good tensile strength and anti-static properties, but because of poor thermal bonding strength and impact resistance, the bag breakage rate is high during packaging
[0007] Therefore how to prepare a kind of hot-tack strength and drop strength is higher, and the polyethylene film of broken bag rate is lower is the problem that needs to be solved

Method used

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  • Polyethylene film for automatic packaging and preparation method thereof
  • Polyethylene film for automatic packaging and preparation method thereof
  • Polyethylene film for automatic packaging and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Embodiment 1: A polyethylene film for automatic packaging, comprising an outer layer, an intermediate layer and an inner layer laminated in sequence;

[0045] The outer layer is composed of the following parts by weight: 20 parts has a melt index of 1.9g / 10min and a density of 0.924g / cm 3 LDPE, 30 parts melt index is 1.0g / 10min, density is 0.92g / cm 3 LLDPE, 20 parts melt index is 1.1g / 10min, density is 0.920g / cm 3 LLDPE and 3 parts of emulsifier;

[0046] The middle layer is composed of the following parts by weight: 10 parts has a melt index of 1.9 g / 10 min and a density of 0.925 g / cm 3 LDPE, 30 parts, the melt index is 1.1g / 10min, and the density is 0.920g / cm 3 LLDPE, 30 parts melt index is 2.4g / 10min, density is 0.921g / cm 3 LLDPE, 7 parts of emulsifier, 5 parts of density 1.47g / cm 3 Polyether ether ketone, 10 parts of white masterbatch for polyethylene;

[0047] The inner layer is composed of the following parts by weight: 10 parts has a melt index of 1.9 g / 10 ...

Embodiment 2

[0056] Embodiment 2: a polyethylene film for automatic packaging, comprising an outer layer, an intermediate layer and an inner layer laminated in sequence;

[0057] The outer layer is composed of the following parts by weight: 30 parts has a melt index of 1.9g / 10min and a density of 0.924g / cm 3 LDPE, 40 parts, the melt index is 1.0g / 10min, and the density is 0.92g / cm 3 LLDPE, 30 parts, the melt index is 1.1g / 10min, and the density is 0.920g / cm 3 LLDPE and 4 parts of emulsifier;

[0058]The middle layer is composed of the following parts by weight: 20 parts has a melt index of 1.9g / 10min and a density of 0.925g / cm 3 LDPE, 40 parts, the melt index is 1.1g / 10min, and the density is 0.920g / cm 3 The LLDPE, 40 parts have a melt index of 2.4g / 10min and a density of 0.921g / cm 3 LLDPE, 8 parts emulsifier, 10 parts density of 1.47g / cm 3 Polyether ether ketone, 12 parts of white masterbatch for polyethylene;

[0059] The inner layer is composed of the following parts by weight: 20...

Embodiment 3

[0068] Embodiment 3: A polyethylene film for automatic packaging, comprising an outer layer, an intermediate layer and an inner layer laminated in sequence;

[0069] The outer layer is composed of the following parts by weight: 40 parts has a melt index of 1.9 g / 10 min and a density of 0.924 g / cm 3 LDPE, 50 parts melt index is 1.0g / 10min, density is 0.92g / cm 3 LLDPE, 40 parts, the melt index is 1.1g / 10min, and the density is 0.920g / cm 3 LLDPE and 5 parts of emulsifier;

[0070] The middle layer is composed of the following parts by weight: 30 parts have a melt index of 1.9 g / 10 min and a density of 0.925 g / cm 3 LDPE, 50 parts melt index is 1.1g / 10min, density is 0.920g / cm 3 LLDPE, 50 parts melt index is 2.4g / 10min, density is 0.921g / cm 3 LLDPE, 9 parts of emulsifier, 15 parts of density 1.47g / cm 3 14 parts of polyetheretherketone and 14 parts of white masterbatch for polyethylene;

[0071] The inner layer is composed of the following parts by weight: 30 parts have a melt...

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Abstract

The invention discloses a polyethylene film for automatic packaging. The polyethylene film comprises an outer layer, an intermediate layer and an inner layer which are sequentially laminated. The outer layer is prepared from the following substances in parts by weight: 20-40 parts of low density polyethylene (LDPE), 30-50 parts of linear low density polyethylene (LLDPE), and 20-40 parts of LLDPE with melt index of 1.1 g / 10 min and density of 0.920 g / cm<3>. The intermediate layer is prepared from the following substances in parts by weight: 10-30 parts of LDPE, 30-50 parts of LLDPE with melt index of 1.1 g / 10 min and density of 0.920 g / cm<3>, and 30-50 parts of LLDPE with melt index of 2.4 g / 10 min and density of 0.921 g / cm<3>. The inner layer is prepared from the following substances in parts by weight: 10-30 parts of LDPE, 30-50 parts of LLDPE, and 10-30 parts of LLDPE. The invention solves the problem that the polyethylene film has lower thermal viscosity and higher bag breaking rate.

Description

technical field [0001] The present invention relates to a kind of polyethylene film, more specifically, it relates to a kind of polyethylene film for automatic packing and preparation method thereof. Background technique [0002] Polyethylene is one of the most important resins in polyolefin resins, and it is a material with the fastest development and strong demand in the world today. Polyethylene mainly includes low-density polyethylene, linear low-density polyethylene, medium-density polyethylene, high-density polyethylene, etc., and has a very wide range of applications in packaging, medical treatment, pipes and other fields. [0003] In the prior art, reference can be made to the Chinese invention patent application document whose application publication number is CN105968489A, which discloses a preparation method of polyethylene antibacterial packaging film, expressed in parts by weight, with 0.3-1.0 parts of silver-loaded nano-titanium dioxide antibacterial agent, Ad...

Claims

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Application Information

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IPC IPC(8): B32B27/08B32B27/32B32B27/28B32B27/18C08L23/08C08L23/06C08L61/16C08L69/00C08K3/36C08K5/20
Inventor 吴伟张贵金吉东升
Owner 青岛东海包装产业有限公司
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