Elastic materials and articles therefrom

C - Chemistry – Metallurgy – 08 – L

Patent

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Details

C08L 23/04 (2006.01) A61L 15/24 (2006.01) C08F 10/02 (2006.01) C08L 23/08 (2006.01)

Patent

CA 2169180

Elastic materials, particularly films, strips, coatings, ribbons and sheets made from at least one substantially linear ethylene polymer are disclosed which can be fabricated on conventional polyolefin extrusion equipment. They can be used to produce elastic composite structures that are stretchable and have recycle compatibility between elastic and non-elastic components. The novel materials have at least about 80 percent recovery at 100 percent strain and are especially useful in making fabricated composite articles (e.g., disposable diapers).

L'invention concerne des matériaux élastiques, notamment des films, des bandes, des revêtements, des rubans et des feuilles, obtenus à partir d'au moins un polymère d'éthylène sensiblement linéaire et qui peuvent être fabriqués sur un équipement traditionnel d'extrusion de polyoléfines. Ces matériaux peuvent être utilisés pour produire des structures composites élastiques qui sont étirables et qui ont une compatibilité de recyclage entre des composants élastiques et non élastiques. Ces nouveaux matériaux présentent des valeurs de retour à leur forme de départ d'au moins environ 80 % par rapport à un allongement de 100 % et sont notamment utiles dans la fabrication d'articles composites façonnés (p.ex. des couches jetables pour bébés).

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