Cavitated oriented polyethylene polymer composites

B - Operations – Transporting – 29 – C

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Details

B29C 55/00 (2006.01) B29C 55/30 (2006.01)

Patent

CA 2753954

Solid state draw a polymer billet, wherein at least 50 percent of all polymers in the billet is a continuous phase of polyethylene polymer having a density of 0.941-0.959 grams per cubic centimeter and a weight-average molecular weight that is 110,000 grams per mole or greater, at a drawing rate of 1.2 meters per minute or faster using a tensile force to create an oriented and cavitated polymer composition whose cross section dimensions all exceed two millimeters.

La présente invention se rapporte à l'étirage à l'état solide d'une billette polymère, où au moins 50 pour cent de tous les polymères de la billette sont une phase continue de polymère de polyéthylène ayant une densité de 0,941 à 0,959 gramme par centimètre cube et une masse moléculaire moyenne en poids qui est de 110 000 grammes par mole ou plus, à une vitesse d'étirage de 1,2 mètre par minute ou plus au moyen d'une force de traction pour créer une composition polymère orientée et à cavités dont les dimensions en section transversale dépassent toutes deux millimètres.

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