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How to determine the quality of PET steel strapping



Familiar with the pet steel strapping production line users are aware that the tensile strength of the PET steel strapping production line is determined by the width and thickness of the PET steel strapping production line, so even the same width and thickness of the pet steel strapping production line, is it the same quality?

Of course, the answer is not, it depends on the packaging material. Today, pet steel strapping production line manufacturers of PET steel strapping production line research, production experts Zhou master to puppet steel strapping production line as an example, to introduce you to the quality of PET steel strapping production line is determined by what:


PET steel strapping


Different grades of polypropylene (PP)due to its different molecular weight and molecular weight distribution of the molten material flow properties and processability will have a significant impact, such as tensile strength and elongation properties of a class in the case of larger molecular weight it has an elevated trend, molecular weight, and molecular weight distribution on the elongation of the fiber isThe quality of the PET steel strapping production line completely depends on the purity of polypropylene, the higher the purity of the polypropylene, the better the tensile strength of the pet steel strapping production line.

  Polypropylene by appropriate uniaxial stretching 33mm with a film can be woven into woven bags, high strength, light weight, corrosion resistance, non-mildew, performance beyond sacks and kraft paper bags, is now widely used in cement, fertilizer and another heavy packaging. Polypropylene sheet after uniaxial extreme tensile, macromolecules along the axial height orientation, strength will increase; lateral macromolecules lose binding force, but also more easily torn into a strip, said tear film, commonly used in the strapping of retail goods.

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