Dongguan Yalan Packing Materials Co., Ltd.

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Dongguan Yalan Packing Materials Co., Ltd.

 [Guangdong,China]

Business Type:Manufacturer

Main Markets: Africa , Americas , Asia , Caribbean , East Europe , Europe , Middle East , North Europe , Oceania , Other Markets , West Europe , Worldwide

Exporter:21% - 30%

Certs:ISO9001

Home> Blog> why the stretched film is easy to break

why the stretched film is easy to break

July 03, 2019
Regarding the problem of stretched film breakage, why does the stretched film break off? How should it be solved? A solution to the problem that the stretched film is easily broken at high flood temperatures.
The stretched film of this polyethylene blend is hot-filled at 100 ° C. 

Usually, the liquid filling film is preferably a coextruded Stretch Film having high temperature resistance and good strength, for example, nylon adhesive resin/PE, the inner layer is still PE, but the outer layer is nylon film. It can be heat-resistant and high-strength. It cannot be melted and blown by a fuse machine. The PP/EVA/PE co-extruded film can be blown, but the heat sealing temperature is higher at 190-200 °C. The thickness should be appropriately increased to 80-90 μm to ensure the strength of the composite film.

Another reason for stretching the film is that the pulling force is too large, and the solution is to lower the tension of the packaging machine. In fact, after sterilizing at 100 °C, the temperature is properly cooled, and the temperature of the hot filling is lowered. As long as it is carried out under the sterile room, the same packaging effect is obtained.

The temperature is influenced by the effect of the viscosity of the polymer and the moment of relaxation. When the temperature increases, the viscosity of the polymer decreases, and under the effect of stable stress, the increase of the high elastic deformation is limited, and the viscosity deformation develops rapidly, which is favorable for the polymer orientation. In the production process of stretched film, it is necessary to adhere to the stable temperature of the workshop. The quality of the production process is very important. When the temperature is controlled, the quality of the stretched film will be improved a lot, so it should be slightly hot on hot summer days and cold winters. Be careful, through other aspects of subsidies, adopt appropriate methods to modify.
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Ms. Justina

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sales@yalanpacking.com

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+86 18025199553

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Contact Us

Author:

Ms. Justina

E-mail:

sales@yalanpacking.com

Phone/WhatsApp:

+86 18025199553

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