| abstract |
The present invention relates to materials that are barrier to gases and to liquids, resistant to water and capable of being formed into single or multi-material thin films or layers which can be transformed by stretching and / or thermoforming. These barrier materials are based on copolyamide essentially consisting of units derived from hexamethylene diamine, iso- and terephthalic acids and optionally adipic acid. They can be used for the production of composite materials comprising one or more thin layers, sheets and / or films, tubes, hollow bodies intended in particular for the packaging of chemicals, food products, pharmaceutical products and / or cosmetics. by. |