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A heavy packaging film

A technology of packaging film and weight percentage, which is applied in the direction of household components, applications, household appliances, etc., can solve the problems of high requirements for production equipment and process conditions, reduce the economic value of products, increase the cost of raw materials, etc., and achieve anti-drop performance and stacking Excellent coding performance, stable performance, and the effect of reducing the types of raw materials

Active Publication Date: 2018-04-06
SHANGHAI FANSHUN PACKAGING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to meet multiple quality indicators, the existing three-layer co-extruded heavy packaging film usually uses a variety of raw materials, which not only increases the cost of raw materials, but also requires high production equipment and process conditions, reduces the economic value of the product, and is difficult to be widely industrialized

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0048] This embodiment provides a heavy packaging film, which is composed of a first layer, a second layer and a third layer which are sequentially co-extruded. The raw materials and specific gravity of each layer are as follows:

[0049]

[0050]

[0051] As shown in the above table, in the raw materials of the first layer, the mass ratio of metallocene polyethylene and low-density polyethylene is 2:1; in the raw materials of the third layer, the mass ratio of PPA and blocking agent is 1:1.

[0052] The total thickness of the heavy packaging film is 170 μm, of which, the thickness of the first layer is 40 μm, the thickness of the second layer is 90 μm, and the third layer is 40 μm, that is, the thickness ratio of the first layer, the second layer and the third layer is 1 :2.25:1.

[0053] The performance of the heavy packaging film that present embodiment provides is as follows:

[0054]

[0055]

Embodiment 2

[0057] This embodiment provides a heavy packaging film, which is composed of a first layer, a second layer and a third layer which are sequentially co-extruded. The raw materials and specific gravity of each layer are as follows:

[0058]

[0059]

[0060] As shown in the above table, in the raw materials of the first layer and the third layer, the mass ratio of metallocene polyethylene and low-density polyethylene is 2:1; in the raw materials of the third layer, the mass ratio of PPA and anti-blocking agent is 1: 1.

[0061] The total thickness of the heavy packaging film is 140 μm, of which, the thickness of the first layer is 35 μm, the thickness of the second layer is 70 μm, and the third layer is 35 μm, that is, the thickness ratio of the first layer, the second layer and the third layer is 1 :2:1.

[0062] The performance of the heavy packaging film that present embodiment provides is as follows:

[0063]

[0064]

Embodiment 3

[0066] This embodiment provides a heavy packaging film, which is composed of a first layer, a second layer and a third layer which are sequentially co-extruded. The raw materials and specific gravity of each layer are as follows:

[0067]

[0068]

[0069] As shown in the above table, among the raw materials of the third layer, the mass ratio of metallocene polyethylene and low density polyethylene is 2:1.

[0070] The total thickness of the heavy packaging film is 250 μm, of which, the thickness of the first layer is 60 μm, the thickness of the second layer is 130 μm, and the third layer is 60 μm, that is, the thickness ratio of the first layer, the second layer and the third layer is 1 :2.17: 1.

[0071] The performance of the heavy packaging film that present embodiment provides is as follows:

[0072]

[0073]

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Abstract

The invention discloses a heavy packaging film. The heavy packaging film is formed by co-extruding a first layer, a second layer and a third layer, wherein the first layer is prepared from the following raw materials in percentage by weight: 45%-55% of metallocene polyethylene, 20%-30% of low density polyethylene and 17%-27% of linear low density polyethylene; the second layer is prepared from the following raw materials in percentage by weight: 60%-70% of linear low density polyethylene and 27%-37% of high density polyethylene; and the third layer is prepared from the following raw materials in percentage by weight: 45%-55% of metallocene polyethylene, 20%-30% of low density polyethylene and 17%-27% of linear low density polyethylene. The heavy packaging film provided by the invention has the advantages of high tensile strength and tearing strength, easiness of being hotly sealed, good anti-blocking property and excellent anti-falling performance and stacking performance.

Description

technical field [0001] The invention belongs to the field of packaging films and relates to a heavy packaging film. Background technique [0002] Heavy-duty packaging film has good performance in packaging, storage, transportation, moisture-proof, etc. It gradually replaces traditional composite film woven bags and is widely used in various industries. Among them, the performance of single-layer extrusion heavy packaging film is relatively single, and it is difficult to meet the requirements of packaging, heat sealing, palletizing, transportation and other links while ensuring mechanical strength, and cannot balance multiple performance indicators. The three-layer co-extruded heavy-duty packaging film can meet multiple indicators at the same time by adjusting the raw materials and their proportions of different film layers. [0003] In order to meet multiple quality indicators, the existing three-layer co-extruded heavy packaging film usually uses a variety of raw materials...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B27/06B32B27/32B32B27/18
CPCB32B27/08B32B27/18B32B27/32B32B27/327B32B2250/03B32B2250/242B32B2250/40B32B2307/31B32B2307/54B32B2307/5825B32B2307/716B32B2553/00
Inventor 沈正林丁士琪
Owner SHANGHAI FANSHUN PACKAGING
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