Supermarkets have a lot of frozen food bags, the packaging seems to be impact resistance and resistance to tension, but the actual life of these packaging is not really can withstand any damage to the outside world? After the expert's experiments and research to draw the following conclusions.
The cold resistance of frozen food can not meet the requirements, in the case of low temperature, can not maintain the original properties of materials, packaging materials more brittle, so that the mechanical strength of packaging materials decreased, resulting in cracking and cracking bags, The protection of the contents of the role.
The role of the bag easy to tear can not effectively play, tear strength is too large to make the bag is not easy to open, tear strength is too small to reduce the mechanical properties of packaging bags, so it is necessary to meet the bag easy to tear the human design, But also to complete the protection of the product.
Packaging bag puncture performance, frozen food is generally relatively hard after freezing, especially fish, meat products, containing bones and hard objects, transport and stacking products can easily squeeze the bag, so that the packaging bag sealing Causing damage, so frozen food on the packaging of the puncture requirements are high.
