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US 8,940,369 B2Granted
Process for producing a polymeric film with a cured polysiloxane coating
AssigneeHuhtamaki Films Germany GmbH & Co. KG
InventorsMichael Fürst, Herbert Pfeffermann
Life of this patent
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Abstract
Process for producing a polymeric film which is furnished on one side with a cured polysiloxane coating and has an overall thickness of ≦45 μm by furnishing both sides of a collapsed tubular film with a cured polysiloxane coating.
Claims17
A process for producing a single- or multilayer plastics film provided with a thermally cured polysiloxane coating on one of its surfaces, according to which a tubular, single- or multilayer plastic film is first flattened and then
- (a) is coated on one side with at least one polysiloxane that has not yet been cured,
- (b) this polysiloxane coating is cured by exposure to heat under drying,
- (c) the second side of the flattened tubular, plastics film is coated with at least one polysiloxane that has not yet been cured,
- (d) this polysiloxane coating is cured by exposure to heat under drying, and
- (e) at least along one lateral edge the flattened, tubular plastics film which has been provided with a cured polysiloxane coating on each side, is opened and the resulting one or two flat films with cured polysiloxane coatings on one surface is/are stored in the form of a roll.
2 more elements
Dependencies are inferred from the claim text.