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Four reasons for composite packaging bag breakage
Release time:2019-09-16
The breakage rate of composite packaging bags is an important aspect affecting the suitability of product packaging, determining the feasibility of the packaging. There are many factors that affect the breakage of composite packaging bags. Below, Shunxingyuan Packaging, a professional flexible packaging manufacturer, analyzes four reasons why composite packaging bags break, allowing you to better understand composite packaging bags.
Composite packaging bag of breakage rate is an important aspect affecting product packaging suitability, it determines whether this packaging is feasible. There are many factors that affect the breakage of composite packaging bags. Below ，professional flexible packaging manufacturer Shunxingyuan Packaging will analyze the reasons why composite packaging bags break 4 several reasons analysis ，so you can better understand composite packaging bags.
1. Peel strength of composite film
If the peel strength of the composite film is too low, it is difficult to meet the requirements of simultaneous stress on the multilayer composite material, causing the force to not very good dispersion, then during the drop process, it will cause breakage. In addition, in high-temperature retort pouches, due to the poor heat resistance of some adhesives, especially in some complex structures (such as BOPAl5/Al7/CPP70), high-temperature retort cooking will also cause cracking at the sealing edge and delamination of the composite film.
2. Bag making process
If the bag making temperature is too high, the performance of the heat sealing material at the heat sealing area will decrease, thus affecting the breakage rate of composite packaging bags ; if the bag making pressure is too high, the heat sealing material at the heat sealing area will be squeezed out ， the heat sealing material of the sealing door is reduced, resulting in the breakage of the packaging bag when it falls. If the heat sealing strip of the bag making is too sharp, or there are mechanical flying thorns, it will also damage the heat cutting edge of the bag, resulting in breakage.
3、 Material aspects
The material must have sufficient thickness. If the thickness is insufficient, the strength of the composite film will be insufficient, resulting in breakage: Pay attention to the addition of recycled materials in the material. All aspects of recycled materials will be reduced. If too much is added, the strength of the composite film will be insufficient, resulting in breakage. In the manufacturing process of PE film, add LLDPE and mPE to improve PE strength and flexibility, thereby reducing breakage. If used in a low-temperature freezing environment, packaging must use low-temperature resistant packaging materials (such as BOPA ), to produce composite films, otherwise it will cause brittle fracture of the composite film in a low-temperature freezing environment.
4 、Impact of packaging
When packaging some heavy objects or powdery items such as salt and washing powder, after filling these items, before heat sealing, the air in the bag should be discharged to reduce the stress on the packaging bag wall, so that the solid material directly bears the force, thus reducing bag damage. thus reduce bag damage.
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