Page 52 - Plastics News April 2019

produCt news

POLYSTAR focused on PP raffia/woven recycling

n this year’s Indiaplast (Delhi), POLYSTAR had live ensure easy operation of the machine. It has best-in-class
Idemonstration of its latest recycling technology for PP power consumption with Siemens energy efficient motors.
jumbo, FIBC, Non-woven and heavily-printed Ad*star bags, The uniform high-quality pellets ensure easy reuse back
aiming at serving the fast-growing Indian raffia and woven again in the production process for raffia, film, nonwoven,
sectors. Repro-One, a single shaft shredder integrated injection and blow molding applications.
extr usio n
pell etiz ing
techno l o g y, Nordson introduces new online
is a one-step,
simple-to- tool BKG® BlueFlow™ Gear
operate machine Pumps
that is ideal for
processing post-
industrial PP ordson Corporation has developed an online tool
raffia and woven Nthat quickly calculates the resin cost savings
waste of different achievable with installation of a BKG® BlueFlow™
forms and sizes. gear pump, plus the number of months in which the
The reusability of the PP recycled pellets is particularly investment in the pump is paid back in full. Installed
high with POLYSTAR’s recycling machines, thanks to its between the extruder and the die, a gear pump shifts
advanced degassing and filtration. Producers can use the job of building melt pressure from the extruder to
20% up to 100% recycled pellets back into the production the gear pump. Besides reducing stress on the extruder
line depending on the final product requirement. Indian and potentially increasing throughput, the gear pump
producers who have integrated this in-house recycling significantly reduces the
technology to their existing production cycle have seen effect of process variations on
great benefits, especially in reducing production costs. melt pressure. This enables
“It increases the percentage of the recycled pellets we extrusion processors to run
can use in our production lines, commented the chairman with narrower tolerances
of raffia producer located in Assam. “When comparing to without compromising
other recycling machine we have previously used or are product uniformity. The
currently using, the quality and reusability of the recycled new online tool, called the
pellets is higher, and the operation is simpler,” he added. Gear Pump Payback Analysis,
In total of 52 POLYSTAR’s shredder-integrated recycling calculates resin cost savings
technology have been installed across India since 2015, and investment payback time
including numerous repeated orders for producers who on the basis of resin price,
have several factory locations. Besides the ease-of- output rate, pressure variation with and without the
use technology and cost-reduction benefits, a compact gear pump, and capital investment. These inputs can be
machine design, clean recycling process and relatively made in either pounds or kilograms and in many of the
affordable machine price are the main reasons why it has world’s currencies. “Even with a new screw, pressure
been popular in India. Repro-One is ideally suited for in- variation without the use of a gear pump typically is in
house producers of PP/PE raffia, rigid plastics, PE plastic the +/- 5% range, making it necessary for the processor
film and nonwoven. The integrated shredder allows direct to use more resin in order to ensure that the finished
feeding of high strength raffia, film, rigid plastics and even product meets specification,” said Christian Schroeder,
lumps (purge) without the need of cutting or pre-crushing global product manager for melt delivery products. “By
before feeding. The Repro-One is equipped with a high reducing pressure variation to as little as +/- 1%, the
sensitive metal detector, dual piston (two-channel) screen BlueFlow gear pump makes possible resin cost savings
changer and degassing section with vacuum pump. The that can generate a full return on investment in a
machine has indicators and alarms with high automation to matter of months.”

Plastics News April 2019 52