How to distinguish the good and bad of the winding film?

One, it is self-adhesive. Self-adhesion refers to the adhesion between the wrapping films after contact, and this property can make the packaged items tight and not loose during the stretch wrapping process and after wrapping. Self-adhesion is affected by many external factors, such as humidity, dust and pollutants, which is also an important indicator of its good or bad detection.

Second, it is the toughness of stretch wrapping film. Toughness refers to the comprehensive performance of film resistance to poking and tearing. The hazard value of the degree of tearing resistance must be taken transversely, that is, perpendicular to the direction of operation of the machine, because tearing in this direction will make the packaging pieces loose, and even if tearing occurs in the longitudinal direction, the packaging pieces can still be kept firm. Therefore, the better the toughness of the winding film is also the higher quality.

Thirdly, it is the tensile property, which is the elongation ability of the film after being subjected to force. Excellent quality stretch film will get some extension after stretching, and it is within a certain range.

Fourth, observe the gloss to judge: general ordinary stretch film is dark, good stretch film is relatively transparent.

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