Biaxially stretched polyester film for forming container and...

C - Chemistry – Metallurgy – 08 – J

Patent

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Details

C08J 5/18 (2006.01) B29C 55/12 (2006.01) B32B 15/08 (2006.01)

Patent

CA 2226933

A biaxially stretched polyester film for forming a container, characterized by being formed of a polyester substantially consisting of an ethylene terephthalate unit and an ethylene naphthalate unit, the refractive index in the direction of thickness of the film being 1.5 or greater. This film is not only excellent in the formability during formation into cans or the like, but has excellent properties in taste property, particularly, the taste property after the retorting, and may be suitably used for containers produced by forming process and, particularly, for metallic cans.

Ce film polyester étiré bi-axialement et destiné au moulage de contenants comprend essentiellement des unités de téréphtalate d'éthylène et des unités de naphtalate d'éthylène, et il possède un indice de réfraction dans le sens de son épaisseur qui n'est pas inférieur à 1,5. Ce film présente non seulement une grande aptitude au moulage lorsqu'on le moule pour obtenir une canette, mais également d'excellentes propriétés aidant à améliorer le goût des aliments, notamment le goût d'aliments soumis à une étape de stérilisation en autoclave, et il est conçu pour être utilisé dans la production d'un contenant fabriqué par moulage, notamment dans la production d'une canette en métal.

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