Bleeder and release films perform different roles in composite manufacture: allowing air and resin to pass, separating stack layers or consolidating the laminate with shrink film. Choosing the function is the first step before comparing formats.
Perforated films are used in the vacuum stack to allow the intended passage of air and resin towards the breather and bleeder fabric. They differ from continuous film because the perforations are part of how the assembly works.
The selection also includes continuous release films for prepreg processing and other documented applications. Oven or autoclave use depends on the reference; it is not a shared property of every film in this category.
Shrink film provides consolidation during heating. It should not be confused with perforated bleeder film or chosen expecting the same resin escape. Consult the product's specified process and cycle before preparing the laminate.
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