Moisture vapour permeable, liquid impermeable multilayer...

B - Operations – Transporting – 32 – B

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B32B 27/08 (2006.01) A41D 19/00 (2006.01) A41D 31/00 (2006.01) A61L 15/22 (2006.01) A61L 15/42 (2006.01) B32B 7/02 (2006.01)

Patent

CA 2448297

The present invention relates to moisture vapour permeable, liquid impermeable multilayer structures which have an enhanced moisture vapour permeability and dimensional stability. The multilayer structures comprise thermoplastic compositions which can comprise thermoplastic polymers and suitable hydrophilic plasticisers. Such structures are utilised in articles, preferably shapeformed three dimensional articles, which can find a variety of applications wherein moisture vapour permeability, liquid imperviousness, and dimensional stability are desirable.

La présente invention concerne des structures multicouches perméables à la vapeur d'eau, imperméables au liquide présentant une perméabilité à la vapeur d'eau et une stabilité dimensionnelle améliorées. Lesdites structures multicouches comprennent des compositions thermoplastiques contenant des polymères thermoplastiques et des plastifiants hydrophiles appropriés. De telles structures sont utilisées dans des articles, de préférence des articles tridimensionnels façonnés, conçues pour une pluralité d'applications requérant une perméabilité à la vapeur d'eau, une imperméabilité aux liquides et une stabilité dimensionnelle.

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