Ecoflex® S BX 7025 is our biodegradable, statistical, aliphatic-aromatic copolyester based on the monomers 1,4-butanediol, adipic acid and terephthalic acid for compounding.
Ecoflex® S BX 7025 on its own has properties similar to PE-LD because of its high molecular weight and its long chain branched molecular structure:
- Transparent to translucent, semi-crystalline structure with DSC melting point in the range of PE-LD
- High ultimate elongation at break and high failure energy (dart drop)
- High, but controllable, water vapour transmission rate (WVTR)
- Good thermostability up to 230C
Ecoflex® S BX 7025 exhibits an excellent compatibility to raw materials from natural resources, e.g. cellulose, starch or lignin. The processing of Ecoflex® compounds on extrusion lines depends on the formulation, machinery and processing conditions. Therefore trials are always recommended to assess the quality of the final product. In general predrying of Ecoflex® S BX 7025 prior to compounding is not required because raw materials from natural resources contain on average much higher amounts of water than Ecoflex® S BX 7025.
Ecoflex® S BX 7025 fulfils the requirements of the European standard DIN En 13432, the US standard ASTM D 6400 and the Japanese GrenPla standard for compostable and biodegradable polymers, because it can be degraded by micro-organisms. The biodegradation process in soil depends on the specific environment (climate, soil quality, population of micro-organisms). The status of the Ecoflex® compound remains in responsibility of the manufacturer.
Ecoflex® S BX 7025 is one of the few biodegradable plastics which complies in its composition with the European and American food stuff legislation for food contact. Specific limitations and more details are given on request. The converter or packer has to check the suitability of the article for the application. The status of the Ecoflex® compound remains in responsibility of the manufacturer.