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.

Abstract: The present invention concerns a self-adhesive water vapour-permeable membrane comprising at least one water vapour-permeable support and a pressure-sensitive, sensitive to pressure, water vapour-permeable, and integral with the lower face of said support. Said membrane is noteworthy in that it comprises a grid included totally or partially in the adhesive layer and in that it comprises air bubbles confined between the meshes of the grid which favour the penetration and the diffusion of the water vapour molecules. Another subject matter of the invention concerns a method for producing such a membrane.

Abstract: The present invention relates to an adhesive label intended to be secured to a blood bag made of Polyvinyl chloride (PVC), styrenic block copolymer, polypropylene or the like, wherein the adhesive label comprises a flexible support and a layer of pressure-sensitive adhesive deposited on a surface of the support; wherein the label is noteworthy in that the support has a mineral filler rate of silica and/or calcium carbonate (CaCO3) and/or the like, of less than 50%, and wherein at 115° C., the support has an elongation greater than or equal to 2% when a test piece 1.5 cm wide of the support is suspended under tension by a weight of 375 g for ?minutes, and wherein the blood bag at 115° C. has an elongation of at least 100% when a 1.5 cm wide test piece of a blood bag is suspended under tension by a weight of 375 g for 75 minutes.

Abstract: The present invention relates to an adhesive label intended to be secured to a blood bag made of PVC, Kraton, polypropylene or the like, wherein the adhesive label comprises a flexible support and a layer of pressure-sensitive adhesive deposited on one of the surfaces of the support; wherein the label is noteworthy in that the support has a mineral filler rate of silica and/or calcium carbonate (CaCO3) and/or the like, of less than 50%, and wherein at 115° C., the support has an elongation greater than or equal to 2% when a test piece 1.5 cm wide of the support is suspended under tension by a weight of 375 g for 75 minutes, and wherein the blood bag at 115° C. has an elongation of at least 100% when a 1.5 cm wide test piece of a blood bag is suspended under tension by a weight of 375 g for 75 minutes.