B - Operations – Transporting – 29 – B
Patent
B - Operations, Transporting
29
B
B29B 9/16 (2006.01) C08J 3/20 (2006.01) C08J 3/22 (2006.01)
Patent
CA 2660996
For making a monolayer packaging article having O2 scavenging properties, a dry blend is prepared by dry blending: - (A) polyamide pellets (A1) coated with at least one first transition metal catalyst (A2), - preferably (B) a second transition metal catalyst and - (C) a polyester, and the dry blend (A/C) or (A/B/C) is processed in order to form the monolayer packaging article. Preferably, the amount of (A) is between 1wt% and 4wt% of the total weight of the dry blend [(A/C) or (A/B/C)], and the total amount of the first (A2) and where appropriate second (B) transition metal catalysts is between 1wt% and 15wt% of the total weight of polyamide pellets (A1).
L'invention concerne la fabrication d'un article d'emballage monocouche ayant des propriétés d'élimination d'oxygène, en préparant un mélange sec en mélangeant à sec : - (A) des pastilles de polyamide (A1) recouvertes d'au moins un premier catalyseur de métal de transition (A2), - de préférence (B) un second catalyseur de métal de transition et - (C) un polyester, et le mélange sec (A/C) ou (A/B/C) est traité pour former l'article d'emballage monocouche. De préférence, la quantité de (A) est comprise entre 1 % et 4 % en poids du poids total du mélange sec [(A/C) ou (A/B/C)], et la quantité totale du premier catalyseur de métal de transition (A2) et, lorsque c'est approprié, du second (B) catalyseur de métal de transition est comprise entre 1 % et 15 % en poids du poids total des pastilles de polyamide (A1).
Krikor Hilde
Verheyen Luc
Welkenhuysen Inge
Amcor Limited
Gowling Lafleur Henderson Llp
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