BASF has added variants to its range of compostable and partially bio-based plastics, named ecovio.
The ecovio T2308 is now available for the processing method of thermoforming. For injection moulding, the company offers the new ecovio IS1335 grade.
Until now, the available ecovio grades are for the extrusion sector – for producing films that can then be further processed into bags as well as mulch film.
Both of these products are available in commercial quantities and consist of renewable raw materials and are said to lend themselves well for being dyed.
Ecovio T2308 exhibits similar mechanical properties to those of amorphous PET, but claims to differ from PET by virtue of its compostability and its high content of renewable resources (polylactic acid).
BASF says the material is not too stiff or too brittle and as a result, thermoformed trays and cups are not damaged during transportation and storage.
The processing window for ecovio T, between 80°C and 120°C, is very broad in comparison to other plastics. Processing can be carried out on conventional flat-film installations and at the processing speeds that are typical for thermoforming.
The second new release in the ecovio product line, the injection-moulding grade ecovio IS1335, also appears to offer good stiffness.
It can be processed using single-cavity or multi-cavity moulds that are equipped with or without hot runners.
This material is said to exhibit moderate flowing characteristics and is dimensionally stable under heat up to 55°C. This variant lends itself for thin-walled, complex and high-quality packaging, which should preferably be manufactured by injection moulding and should be compostable and can also be decorated through in-mould labelling.