pallet stretch film sample freely

1.stretch film Is the parcel, it is a combination of membrane puncture resistance and tensile properties, tear resistance refers to the stretch film only after the tension and puncture resistance to tear, and the degree of tearing resistance value must be horizontal, vertical direction to that of the machine operation, because in this direction will make the package torn loose and even longitudinal tear, package remained strong.

2. stretch is index is stretched, this is the stretch wrap film after film tension's ability to produce elastic elongation, longitudinal tensile increases, will eventually make thin stretch film, the width of the shortened, while the longitudinal tensile is beneficial, but excessive tension is usually not desirable, because this will make the stretch film thinning, easy tear, at the same time increased the tension applied to packaging.

3. Adhesion: refers to the degree to which the tension applied to the stretch film can be maintained in the process of drawing the package. Then there is permissible stretching, which is the maximum stretching that can be applied to maintain all the necessary properties under certain conditions of use. Permissible stretching varies with different USES.

4. Winding MPE is Gao Ligou neat polymer membrane stretch film, very narrow molecular weight distribution, can accurately control the physical properties of the polymer, so further improve on the performance, and due to the narrow molecular weight distribution PE and processing scope too narrow, processing conditions difficult to control, usually to add 8% of LLDPE, reduce the melt viscosity, to increase stretch film flatness, PE price is also high.