HIGH TENACITY AND TOUGHNESS IN METALLOCENE POLYPROPYLENE FILMS

• Main Authors: SHELDON, CAROLYN, L, MUSGRAVE, MIKE, CUMMINGS, RODNEY, SELG, PETER
• Format: Patent
• Language: English; French
• Published: 01.06.2006
• Subjects: AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; LAYERED PRODUCTS; LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM; LOOMS; METHODS OF WEAVING; PERFORMING OPERATIONS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; TEXTILES; TRANSPORTING; WEAVING; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL; WOVEN FABRICS

A film product and a method of making the same are provided, the film product comprising a metallocene catalyzed polypropylene and a tenacity of at least about 2.5 g/den is provided. The film product is capable of being drawn at a draw ratio of from about 5.0:1 to about 10.0:1. The film product is also capable of being processed into a slit tape product. A method of weaving a woven product from the slit tape product is also provided, wherein the woven product may have a tenacity within about 10.0 percent of the tenacity of the film product. L'invention concerne un film et un procédé de fabrication dudit film. Ce film comprend un polypropylène métallocène catalysés par métallocène et présente une ténacité d'au moins environ 2,5 g/den. Par ailleurs, ce film peut être étiré à un rapport d'étirage compris entre environ 5,0:1 et environ 10,0:1 et peut également être transformé en bandelette découpée. L'invention concerne également une méthode permettant de tisser un produit tissé à partir de la bandelette découpée, le produit tissé pouvant présenter une ténacité comprise d'environ 10,0 % de la ténacité du film.