How To Identify The Quality Of Stretch Wrapping Film

The products of stretch film manufacturers have the advantages of being easy to use and economical, and when we buy, we must pay attention to identifying its quality.

First of all, its tensile properties must be tested. Stretching is the ability of the stretch wrap film to produce elastic elongation after being stretched. If the quality is good, the length will be extended after stretching, and within a certain limit, it will not be broken. . Then pay attention to toughness, which refers to the comprehensive performance of the film against puncture and tear. The dangerous value of tear resistance must be taken in the transverse direction, that is, perpendicular to the direction of machine operation, because tearing in this direction will loosen the package, even if If the longitudinal tear occurs, the package can still remain firm, so the better the toughness of the stretch wrapping film, the better the quality. The second is self-adhesion, which refers to the adhesion between the wrapping films after contact. This feature can make the packaged items tighten without loosening during the stretch wrapping process and after wrapping.

Among them, self-adhesion is affected by various external factors, such as humidity, dust and pollutants, etc., which is also an important indicator to detect the quality of stretch wrapping film.