Over the past several years, Bekum has optimised its PET processing technology, through extensive extrusion system developments, machine optimisations and overall advances in PET process knowhow.
Bekum
PET handleware: Bekum’s got a handle on it
Extensive extruder and feedscrew development has been performed by Bekum to address the primary challenges of extruding high viscosity PET. The shear sensitivity of PET at higher throughput rates can drastically increase stock temperature and reduce parison hang strength. Also regrind presents a problem due to the differences in melting characteristics and bulk density of bottle/flash flake.
Bekum’s Extrusion System development results in consistent PET material throughput at acceptable stock temperatures when running up to 50 per cent process regrind.
Bekum’s parsion over parison BKZ range of extrusion heads have proven to be an excellent solution for PET processing. Knit lines are hidden on the parting line and are less apparent thus leaving panels looking gorgeous.
Clamps with high tonnage but poor force distribution do not work well for the tough trimming requirements of PET handleware applications. Bekum’s patented C-Frame clamping units have demonstrated excellent PET handleware trimming performance.
Bekum’s advantages in PET processing include PET bottles integrating a true flow-through handle; extrusion blow moulding of recyclable PET (Code 1); up to 50 per cent regrind processing; extrusion system – extruder and feeding screw – optimised for PET processing; a patented C-frame clamping unit demonstrates excellent force distribution and PET handleware trimming performance; and a calibrated neck finish.
