The mechanical performance of cosmetic package plays an important role in the packaging & processing, transportation and shelf life. Its quality directly affects cosmetics safety during distribution. The testing items include: tensile strength & elongation rate, peeling strength of laminated films, heat seal strength, sealing and leakage, impact resistance and surface smoothness, etc. Coefficient of Friction of Materials Coefficient of friction is the smoothness performance of material surface, an important index evaluating the inner and [...]

The smoothness of BOPP cigarette film is one important index for BOPP films with is the testing requirements coming along with the high speed packing. There are four kinds of situations that need coefficient of friction testing, namely, 1. the coefficient of friction of the film and the metal side of the machine or the transfer belt; 2. the inside side between films; 3. the film inner side and the cigarette outer package; 4. the [...]