Polymer PET distribution and PET chip cutting system

MELT DISTRIBUTIO N, CHIP HANDLING... double spir Shaft sealing: Maag Vispac... Maag Vispac Shaft Sealing... prevent bending of the candles due to the high polymer pressure !... Acid trea

MELT DISTRIBUTIO N, CHIP HANDLING

Chip Production / Pelletizing

Melt Distribution

TI

Dischar ge: up to 250 bar

Pr oduct temper atur e 280 285 °

25 t/h

double spir Shaft sealing: Maag Vispac

Maag Vacorex 320/400 (600 t/d MTR)

Maag Vacorex VX 250-M (500 t/d Textile)

Maag Vacorex VX 250-M (500 t/d Textile)

3 = Sealing liquid (r

pin forwards and backwards

Maag Vispac Shaft Sealing

Melt Filtration

Mater Residence time >= 2 min, wide distr Filter

Pr essur e dr op ~ 30 80 bar (Design = 100 bar )

24 Apr 25 Apr 26 Apr 27 Apr 28 Apr 29 Apr 30 Apr

General Working Principle

No Of candles:

Candle length:

Filter candle bundle

Air heater temp.: 310°

HYDRO

HYDRO

HYPO X Cleaning Sequence

prevent bending of the candles due to the high polymer pressure !

Filter Cleaning

Acid treatment (to dissolve TiO2 particles still pr

Rinsing with plenty of water

Rinsing with plenty of water

Fill test bath with isopr

Connect one filter

Bubble point test

Chip Production / Pelletizing

CHIP PRO DUCTIO

Melt for ced to die plate and conver ted to str Str

Tr anspor t / cooling (by water Dr

Water cir cuit

Chip shape: cylindr

Star t-up table / cooling tr Cutter

600 t/d: 3 + 1 pcs size 600 (Rieter Supplier s: Rieter Automatik / Chinese copies / Scheer /

Strand Pelletizer: PFD

Max capacity: 290 t/d = 12 ‘

Melt pr essur e at die plate: <= 10 bar

Dr Water Water supply temper atur ° C

If temperature of the chip transport water (circulation) is too war

time exposed to the cooling water

Die head M-USG 600 (Rieter)

Cutter head USG 1200 (Rieter)

Remaining moistur Chip temper atur

Pneumatic Dryer, Centrifugal Dryer

Chip conveying by air Shar p bends with sieves

Rieter Aero: Principle

Product Drain

Dr ain of ester ification pr oduct with 20P11A/B thr

Dr ain of pr epolymer pr oduct with 22P21A/B thr

Dr ain of final polymer fr om br 22P22A/B thr ough melt valve 570-054

Dr ain of pr oduct only in emer

Dr ain pit equipped with spr ay water nozzles for

Polymer melt lumps to be r emoved with a hook