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Question:

What is the three layer coextrusion blow molding machine for blow molding of plastic bag tension formula,

why production is not strong?I have several new co extrusion machines, but the blown plastic bags are not produced by others

Answer:

Tensile strength is divided between longitudinal and transverse, and PE bags are transversely increased, available 8CLLDPE is added, longitudinal can be added to medium, medium density or high-density material to increase tensile strength.
The recipe is either too large or too small. Do you mean that the tension is not enough, transverse or vertical?
Plastic tensile testing without tension is strong that said, you should be the low tensile strength, tensile strength for 2 kinds of films, one is the transverse tensile strength, a longitudinal tensile strength, is a reflection of the tensile properties, the tensile strength of the plastic bag if you low, because your choice of materials is not brittle material or toughness (PE/PP/PVC/PET/PBT/PC do not know or what material) if you insist on using this material, make plastic bags, you can modification method by crosslinking, adding additives, improving formula, to achieve the goal, the specific situation you need to find a degree in Polymer Science plastic engineer, they will tell you.

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