Polyester resin foamed sheets

C - Chemistry – Metallurgy – 08 – G

Patent

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Details

C08G 63/181 (2006.01) B32B 5/18 (2006.01) B32B 27/36 (2006.01) B65D 65/38 (2006.01) B65D 65/40 (2006.01) C08L 67/03 (2006.01) C08L 67/04 (2006.01)

Patent

CA 2283039

Polyester resin foamed sheet, usable for the production of containers for beverages and foods, having a density lower than 700 kg/m3 and crystallization rate such that, when the material is heated at 120°C. for 5 minutes, the crystallinity does not reach values higher than 15%. The aromatic polyester resin used for preparing the foamed sheet can be mixed with an aliphatic polyester resin to impart biodegradability and/or compostability to the sheet.

Feuilles en mousse de résine polyester pouvant être utilisées pour la production de contenants pour boissons et aliments, ayant une densité inférieure à 700 kg/m3 et un taux de crystallisation tel que, lorsque le matériau est chauffé à 120 degrés celcius pendant 5 minutes, la crystallinité n'atteint pas des valeurs supérieures à 15 %. La résine polyester aromatique utilisée pour préparer la feuille en mousse peut être mélangée avec une résine polyester aliphatique pour impartir la biodégradabilité et/ou la compostabilité à la feuille.

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