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Polyolefin self-adhesive heavy packaging film and preparation method thereof

A technology of polyolefin and packaging film, which is applied in packaging, wrapping paper, transportation and packaging, etc. It can solve the problems of low lapping and peeling force of the film, easy occurrence of loose packages, low lapping and peeling force of self-adhesive packets, and poor use stability. , to achieve the effect of high lap peel strength, excellent tensile strength and cost saving

Inactive Publication Date: 2020-06-19
SHANDONG TIANHE PLASTIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Due to the differences in raw materials, formulas, preparation processes, and technology, domestic polyolefin self-adhesive heavy-duty packaging films generally have the defects of low tensile strength and low lap peeling force of self-adhesive envelopes, especially when the packaging volume reaches 2 tons. , the problem of breaking the packaging film due to high tension occurs. The key is poor self-adhesive performance. Use in the case of large temperature difference working conditions

Method used

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  • Polyolefin self-adhesive heavy packaging film and preparation method thereof
  • Polyolefin self-adhesive heavy packaging film and preparation method thereof
  • Polyolefin self-adhesive heavy packaging film and preparation method thereof

Examples

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Effect test

Embodiment 1

[0054] The polyolefin self-adhesive heavy packaging film described in Example 1 is composed of an inner layer, a middle layer and an outer layer, and the ratio of raw materials of each layer is as shown in Table 1 below:

[0055] Table 1 Example 1 polyolefin self-adhesive heavy packaging film raw material ratio table

[0056]

[0057] The preparation method of the polyolefin self-adhesive heavy packaging film described in the present embodiment 1 consists of the following steps:

[0058] Weigh the above raw materials according to the formula, put them into the mixer in layers and mix them for 30 minutes, and then send them into the inner, middle and outer layer hoppers of the corresponding three-layer co-extrusion blow molding equipment through the automatic feeder. The temperature setting of each section: 170°C, 200°C, 220°C, 220°C; the connecting body temperature is set at 215°C, the die head temperature is set at 210°C; the length-to-diameter ratio of the extruder screw ...

Embodiment 2

[0061] The polyolefin self-adhesive heavy packaging film described in Example 2 is composed of an inner layer, a middle layer and an outer layer, and the raw material ratio of each layer is as shown in Table 2 below:

[0062] Table 2 Example 2 polyolefin self-adhesive heavy packaging film raw material ratio table

[0063]

[0064] The preparation method of the polyolefin self-adhesive heavy packaging film described in the present embodiment 2 consists of the following steps:

[0065] Weigh the above raw materials according to the formula, put them into the mixer in layers and mix them for 30 minutes, and then send them into the inner, middle and outer layer hoppers of the corresponding three-layer co-extrusion blow molding equipment through the automatic feeder. The temperature setting of each section: 170°C, 200°C, 220°C, 220°C; the connecting body temperature is set at 215°C, the die head temperature is set at 210°C; the length-to-diameter ratio of the extruder screw is 3...

Embodiment 3

[0068] The polyolefin self-adhesive heavy-duty packaging film described in Example 3 is composed of an inner layer, a middle layer and an outer layer, and the raw material ratio of each layer is as shown in Table 3 below:

[0069] Table 3 Example 3 polyolefin self-adhesive heavy packaging film raw material ratio table

[0070]

[0071] The preparation method of the polyolefin self-adhesive heavy packaging film described in this embodiment 3 consists of the following steps:

[0072] Weigh the above raw materials according to the formula, put them into the mixer in layers and mix them for 30 minutes, and then send them into the inner, middle and outer layer hoppers of the corresponding three-layer co-extrusion blow molding equipment through the automatic feeder. The temperature setting of each section: 170°C, 200°C, 220°C, 220°C; the connecting body temperature is set at 215°C, the die head temperature is set at 210°C; the length-to-diameter ratio of the extruder screw is 30:...

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Abstract

The invention belongs to the technical field of plastic packaging, and particularly relates to a polyolefin self-adhesive heavy packaging film and a preparation method thereof. The film is formed by compounding an inner layer, a middle layer and an outer layer, and is prepared from the following raw materials in parts by average mass: 40 to 80 parts of metallocene linear polyethylene, 15 to 30 parts of low-density linear polyethylene, 5 to 15 parts of low-density polyethylene, 10 to 30 parts of a thermoplastic elastomer, 3 to 5 parts of an anti-aging master batch and 1 to 3 parts of a color master batch. The polyolefin self-adhesive heavy packaging film provided by the invention has excellent mechanical properties, excellent tensile strength, puncture resistance, tear resistance and impactresistance.

Description

technical field [0001] The invention belongs to the technical field of plastic packaging, and in particular relates to a polyolefin self-adhesive heavy packaging film and a preparation method thereof. Background technique [0002] Polyolefin self-adhesive heavy-duty packaging film has superior mechanical properties, extremely high tensile strength and stress deformation resistance, excellent puncture resistance and tear resistance, and has the function of self-adhesive sealing after packaging more than one ton of items. It can be used under the environmental conditions of -30℃-40℃ without reducing its self-adhesive performance. It is a new flexible material for heavy packaging of dry goods. At present, it is widely used in the packaging of cotton with mechanical automatic cotton pickers, as well as the harvesting and packaging of other agricultural machinery automation crops, the packaging of bulk industrial products, machines, and non-woven products. But in practical appli...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/06B32B27/18B32B27/20B32B27/32B65D65/40C08L23/08C08L23/06C08J5/18B29C48/21B29C48/92B29L7/00
CPCB29C48/21B29C48/92B29C2948/92704B29L2007/00B32B27/08B32B27/18B32B27/20B32B27/32B32B27/327B32B2250/242B32B2274/00B32B2307/54B32B2307/552B32B2307/558B32B2307/581B32B2307/5825B32B2323/04B32B2323/046B32B2553/00B65D65/40C08J5/18C08J2323/08C08J2423/06C08J2423/08
Inventor 刘继明庄新
Owner SHANDONG TIANHE PLASTIC
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