PROCESS FOR PRODUCING MULTILAYER FILM
A process for producing a film is provided and includes extruding a multilayer film with a core component comprising from 15 to 1000 alternating layers of layer A material and layer B material. The layer A material has a crystallization temperature, T1c. The process includes passing the multilayer f...
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Main Authors | , , , , |
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Format | Patent |
Language | English French German |
Published |
07.08.2019
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Subjects | |
Online Access | Get full text |
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Summary: | A process for producing a film is provided and includes extruding a multilayer film with a core component comprising from 15 to 1000 alternating layers of layer A material and layer B material. The layer A material has a crystallization temperature, T1c. The process includes passing the multilayer film across an air gap having a length from 10 mm to 800 mm. The process includes moving the multilayer film across a roller at a rate from 20 kg/hr to 1000 kg/hr. The process includes maintaining the roller at a temperature from T1c-30° C. to T1c, and forming a multilayer film with a layer A having a thickness from 50 nm to 500 nm and an effective moisture permeability from 0.77 to 2.33 g-mil/m2/24 hrs. |
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Bibliography: | Application Number: EP20150728323 |