Abstract:
The composition exhibits oxygen-scavenging properties and comprises a polyamide, a polyester, and transition metal catalyst. The amount of polyamide is at least 10wt%, and the polyester comprises a x%PETI copolymer and/or a y%PETG copolymer, with x and y being at least equal to 5. The composition is particularly suitable for making a low haze and gas barrier layer in a multilayered packaging article, such a as a rigid container, a film for a package.
Abstract:
The multilayered preform (1) or multilayered container obtained by biaxially stretching a preform comprises at least one gas-barrier layer (L B ), said gas-barrier layer (L B ) comprising a polyamide and a polyester, wherein the polyester comprises a x%PETI copolymer and/or a y%PETG copolymer, with x and y being at least equal to 5. The multilayered container exhibits high gas barrier performances, in particular oxygen-scavenging properties, and low haze.
Abstract:
Le procédé permet le dosage d'au moins un additif (A) à l'entrée d'une presse à injecter (2) comportant une vis d'extrusion (20) qui est alimentée par gravité avec au moins un polymère (P) sous forme de granulés. Dans le but de tenir compte de la différence entre le débit réel d'entrée du polymère (P) en phase de transfert et le débit réel d'entrée du polymère (P) en phase de plastification, on introduit l'additif (A) à l'entrée de la vis d'extrusion avec un débit d'entrée d'additif au cours de la phase de transfert qui est différent du débit d'entrée d'additif au cours de la phase de plastification.
Abstract:
The polymeric composition comprising (A) a polyester resin and (B) micrometrical silica particles, preferably particles made of cristobalite or quartz, dispersed in the polyester resin preferably at concentration of at least 2wt%. The polyester resin preferably comprises a PET homo or copolymer. Packaging articles, especially biaxially stretched blow moulded containers, made with the said polymeric composition exhibit high opacity to UV and visible light radiations as well as improved barrier properties to O 2 and to water vapour, and improved thermal and mechanical properties.
Abstract:
The injection-moulded multilayer transparent plastic container (1) exhibits air and water barrier properties, and has at least one barrier layer (CL) comprising a fluoropolymer. Preferably, said fluoropolymer is a homo or copolymer of polychlorotrifluoroethylene (PCTFE).
Abstract:
The plastic preform (1) comprises a heat sealable neck finish (2) having at least a first upper heat sealable portion (20) which is terminated by a top opened end (200), a second intermediate threaded portion (21) for screwing a closure cap, and a third lower portion (22) that comprises a neck support ring (221a) of width (L1). The first upper portion (20) comprises an annular gripping recess (201) of predetermined height (H2) and depth (d). The inner face of the third lower portion (22) forms an inward transition step (221 b), and the outer diameter (D3) of the preform measured just below the neck support ring (221a) is less than the outer diameter (D2) of the neck finish measured just above the said inward transition step (221b).
Abstract:
The article (1') is made from a polymeric composition comprising a polyester resin and silica particles dispersed in the polyester resin, and comprises an unstreched portion (4) and a stretched wall (2'a). The silica particle concentration is not more than 40wt%, and: (i) the density density (db) of the stretched wall (2'a) is at least 13% less than the density (dp) of the unstreched portion (4) and/or (ii) the thickness (WTb) of the stretched wall (2'a) is less than 0.5mm and the light transmission of the stretched wall (2'a) is less than 5% at 800nm and less than 2% at 550nm.