Puncture-resistant heavy packaging composite film and preparation thereof

A composite film, heavy packaging technology, applied in packaging, wrapping paper, transportation and packaging, etc., can solve the problems of package rupture, large fluctuation of product quality, unstable tensile strength and puncture resistance, etc.

Active Publication Date: 2012-06-20
佛山新长盛塑料薄膜有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in practical application, the product quality index has not formed a unified national standard, and the product formula is not mature, and is still in the process of continuous improvement and perfection, which directly leads to large fluctuations in the qualit

Method used

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  • Puncture-resistant heavy packaging composite film and preparation thereof
  • Puncture-resistant heavy packaging composite film and preparation thereof
  • Puncture-resistant heavy packaging composite film and preparation thereof

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Experimental program
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Embodiment Construction

[0020] The present invention will be further described in detail below in conjunction with specific implementation methods, which are only for verification of the technical effects of the invention, and are not exhaustive.

[0021] Heavy packaging film technical requirements are very precise and strict:

[0022] Thickness 0.16±0.04mm

[0023] Width 550±3mm

[0024] Longitudinal tensile strength ≥ 21MPa

[0025] Transverse tensile breaking strength ≥ 21MPa

[0026] Longitudinal elongation at break ≥ 500%

[0027] Transverse elongation at break ≥ 600%

[0028] Dart impact (9) ≥ 600

[0029] The difference between the surface temperature and the indoor temperature when the film is rolled is less than 5°C

[0030] Membrane tendrils have a flat surface and neat ends.

[0031] Main performance test indicators and test standards Table 1

[0032]

[0033]

[0034] Use raw material table 2 in the embodiment

[0035]

[0036]

[0037] Use a three-layer co-extrusion ...

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Abstract

A heavy packaging composite film is characterized by comprising an outer layer, a core layer and an inner layer. The formula of components of the heavy packaging composite film by weight includes that the ratio of the outer layer to the core layer to the inner layer is 5-20wt%:60-90wt%:5-20wt%, preferably, the ratio is 5-10wt%:80-90wt%:5-10wt%, and more preferably, the ratio is 10wt%:80wt%:10wt%.The outer layer is made of metallocene linear polyethylene and low-density polyethylene, the core layer is made of EVA (ethylene vinyl acetate) and low-density polyethylene, and the inner layer is made of medium-density polyethylene and low-density polyethylene. By means of coordination of the metallocene linear polyethylene of the outer layer, the EVA of the core layer and the low-density polyethylene of the inner layer, the three-layer heavy packaging composite film is ensured to simultaneously have better puncture resistance and tensile strength.

Description

technical field [0001] The application relates to a heavy packaging film and a manufacturing method thereof, belonging to the technical field of processing and application of packaging plastic raw materials. Background technique [0002] Traditional polyethylene, polypropylene, polystyrene and other resin pellets are packaged using paper composite woven bags with an opening at the top. Due to many procedures and complicated packaging, the packaging capacity of a single packaging line is greatly limited. It can only be applied to synthetic resin pellet production lines with an annual output of less than 100,000 tons. The heavy-duty packaging film products matched with the automatic packaging line of large-scale synthetic resin products widely adopt continuous blown film for one-time "Form-Fill-Seal (FFS)" bags. A new type of heavy packaging film product that has just been developed in recent years. During the packaging operation, multiple processes and the operation process...

Claims

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Application Information

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IPC IPC(8): B32B27/08B32B27/18B65D65/38
Inventor 戴涛
Owner 佛山新长盛塑料薄膜有限公司
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