Efficient PLA packaging production with Brueckner Formtec
Brueckner Formtec presented on April 19, 2006 at 3rd CEE Film & Sheet Conference in Budapest a unique concept for most efficient production of thermoformed PLA goods, incorporating cast technology with pinning, twin screw extrusion and inline thermoforming. The presentation received very strong interest due to production prices that shall be competitive with trays made of PET or PS. Thermoforming substrates commonly do not require a double side polished surface due to the surface modification during the thermoforming process. Thus a production via chill roll and electrostatic pinning with only one polished side is possible. Furthermore the high heat exchanging capacity of the chill roll is perfectly suitable for PLA, since PLA has a low heat transfer coefficient and thus is more cost effective than a calendering process.