| abstract |
The present invention relates to a uniaxial or biaxially stretched polyester resin foam sheet which can be used for the production of beverage and food containers, which has a density of 700 kg / m 3 or less and is heated at 120 ° C. for 5 minutes. The crystallinity has a crystallization rate that does not exceed 15%. The aromatic polyester resins used to prepare the foamed sheets can be mixed with aliphatic polyester resins that impart biodegradability and / or compostability to the sheets or with 1 to 10% by weight of polyamide. |