Polymers blends, films and articles thereof

C - Chemistry – Metallurgy – 08 – L

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C08L 23/04 (2006.01) C09J 123/04 (2006.01) C09J 123/08 (2006.01)

Patent

CA 2185469

Polymer blends, films and articles having improved hot tack strength prop- erties. The polymer blend comprises a polymer having a narrow molecular weight and composition distribution and a high pressure ethylene homopolymer or copolymer. The articles and films have significantly improved physical character- istics and remarkably high hot tack and low heat seal initiation temperatures and therefore provide improved processibility at higher line speeds on commercial heat sealing equipment.

Mélanges polymères, films et articles présentant des caractéristiques de tenue des soudures à chaud améliorées. Ce mélange polymère comprend un polymère présentant une distribution de composition et de poids moléculaire étroite ainsi qu'un copolymère ou homopolymère d'éthylène haute pression. Les articles et films ainsi obtenus présentent des caractéristiques physiques sensiblement améliorées ainsi qu'une tenue des soudures à chaud étonnamment élevée et des températures d'amorçage de thermosoudage étonnamment faibles, ce qui leur confère une aptitude de mise en oeuvre améliorée avec des vitesses de production supérieures dans des appareils de thermosoudage industriels.

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