US 2024/0139690 A1 · TRANSPARENT, GAS-PERMEABLE AND WATERPROOF FILM, PARTICULARLY FOR APPLICATIONS IN THE MEDICAL FIELD

Transparent, gas-permeable and waterproof film, particularly for applications in the medical field

AssigneesAdhex Technologies, Universite Claude Bernard Lyon 1, Centre National De La Recherche Scientifique, Universite Jean Monnet Saint Etienne, Institut National Des Sciences Appliquees De Lyon

InventorsAlexane SEXTON, Maud WILLIAMS, Julie JEVIC, Eliane ESPUCHE, Fabrice GOUANVE

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Abstract

A transparent, gas-permeable and waterproof film, particularly for applications in the medical field is disclosed. The film includes a polyolefin base, to which is added a monomeric plasticiser with a percentage by mass of between 10% and 50% and preferably also molecular sieves with a percentage by mass of less than or equal to 20%, this addition enables in particular the gas permeability of the film to be increased, said film thus having a high gas permeability, as well as low water permeability and high transparency, together with various mechanical characteristics and properties so that it is particularly well suited to many applications, in particular in the medical sector and in particular for application to an identification card used in the medical diagnosis.

Claims8

Dependent claims

A transparent, waterproof and gas-permeable film, comprises:

a material comprising a polyolefin base, to which is added at least one monomeric plasticiser with a percentage by mass of the monomeric plasticiser of between 10% and 50% of a total mass of the material of the transparent, waterproof and gas permeable film, wherein the polyolefin base corresponds to one of the following components:
a PP homopolymer or a PP/PE block or random copolymer, and wherein the transparent, waterproof and gas permeable film has a transmittance greater than 85% at 428 nm.

Dependencies are inferred from the claim text.