Cyclic-olefinic copolymers (COC) are being used in flexible packaging as a blend component or as a discreet layerin multi-layer polyolefin films. They are typically used to enhance stiffness and heat resistance in food packaging.As a core layer in laminated or coextruded multilayer films, they provide high moisture barrier and exceptionalclarity and stiffness.In place of commonly used organic slip additives, they can decrease film to film coefficient of friction (C.O.F.) tolevels of commercial interest. Performance as a slip additive, however, is related to a number of variables, includingviscosity of the matrix, type and add level of the COC. And the film process melt temperature. Various microscopytechniques investigated support the findings.
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