Separating film having a foamed structure
AssigneeHuhtamaki Forchheim Zweigniederlassung der Huhtamaki Deutschland GmbH & Co. KG
InventorsHeinz ENGELHARD, Michael Fürst, Jürgen Panhans, Matthias Mauser
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Abstract
Separating film, comprising at least one layer(s) having a foamed structure of at least one thermoplastic polymer, at least one of the surfaces of the separating film being provided with a release layer (b) of at least one cured polysiloxane as an outer layer, the use thereof as a detachable protective and covering film, and roofing membrane provided with the separating film as a detachable protective and covering film.
Claims17
A release film comprising at least one layer (s) with a closed-cell foam structure based on at least one thermoplastic polymer, where the closed-cell foam structure is based on expanded, hollow microparticles, the expansion of which has been achieved by virtue of at least one volatile organic compound present in the cavity of the microparticles, and where at least one of the surfaces of the release film has been equipped with a release layer (b) as external layer based on at least one hardened polysiloxane.
Dependencies are inferred from the claim text.