https://www.avient.com/news/high-temperature-comptek-medical-grade-formulations-polyone-now-available-north-america
In late 2016, PolyOne acquired COMPTEK (Diez, Germany), a specialist in formulations based on extreme-heat polymeric materials such as PEEK, PES, PEI, PPS, PSU and PPSU.
https://www.avient.com/products/polymer-colorants/high-temperature-color-concentrates/colorant-chromatics-sulfone-colorants-ultrason-high-performance-polymers
PES / PSU / PPSU Colorants
https://www.avient.com/products/polymer-colorants/fluoropolymer-color-concentrates/colorant-chromatics-pvdf-colorants
PES/PSU/PPSU Colorants: Colorant Chromatics™
https://www.avient.com/products/engineered-polymer-formulations/flame-retardant-formulations/maxxam-sy-foamable-flame-retardant-formulations
With better heat and crush resistance versus foamed PE and FEP, Maxxam SY formulations also include options for 'zero halogen, low smoke and fume.'
https://www.avient.com/products/advanced-composites/continuous-fiber-composite-tape-laminates-and-barstock/polystrand-continuous-fiber-tapes-laminates
PP, PE, PETG, aPET and PA6
PE
PE
https://www.avient.com/news/oncolor-wc-wire-and-cable-colorants-feature-cost-effective-performance
Compatible with ethylene-vinyl acetate (EVA) and polyethylene (PE), a portfolio of 12 standard colors allows for lower minimum order quantities and shorter lead times.
https://www.avient.com/products/polymer-colorants/fluoropolymer-color-concentrates/colorant-chromatics-fep-colorants
PES/ PSU/ PPSU Colorants: Colorant Chromatics™
https://www.avient.com/products/polymer-colorants/high-temperature-color-concentrates/colorant-chromatics-peek-colorants
PES/PSU/PPSU Colorants: Colorant Chromatics™
https://www.avient.com/products/engineered-polymer-formulations/high-temperature-polymer-formulations/colorant-chromatics-crosslinked-formulations
PES/PSU/PPSU Colorants: Colorant Chromatics™
https://www.avient.com/sites/default/files/2020-10/2020-gravi-tech-design-guide-.pdf
Base Resin ABS PA PBT PC PE PEEK PP PPS
Barrel Temperatures °F (°C)
Rear Zone 400–475
(200–250)
480–540
(248–282)
480–520
(250–270)
480–570
(250–300)
400–445
(200–230)
660–700
(350–475)
400–440
(200–225)
520–600
(270–300)
Center Zone 410–480
(205–253)
490–550
(254–287)
485–525
(251–273)
500–580
(260–305)
410–455
(207–237)
670–710
(357–385)
410–450
(205–230)
550–610
(285–310)
Front Zone 420–490
(210–257)
500–560
(260–293)
490–530
(254–276)
515–590
(267–310)
420–465
(213–243)
680–720
(363–400)
420–455
(215–235)
570–620
(300–320)
Nozzle 425–500
(215–260)
510–570
(265–298)
490–540
(254–282)
530–600
(275–315)
430–475
(220–250)
700–730
(370–395)
430–460
(220–240)
610–620
(320–325)
Melt Temperature 425–515
(215–270)
510–570
(265–298)
490–540
(254–282)
530–615
(275–325)
430–495
(220–260)
700–725
(370–385)
430–475
(220–250)
610–635
(320–335)
Mold Temperature 140–200
(60–90)
150–300
(65–148)
140–280
(60–137)
160–240
(70–115)
80–140
(25–60)
300–400
(150–200)
80–140
(25–60)
190–300
(90–150)
Drying Parameters
190 (90)
2–4 Hours
0.01%–0.15%
180 (82)
4–5 Hours
0.10%–0.20%
275 (135)
0.02%–0.04%
250 (125)
0.02%
160 (70)
2 Hours
300 (150)
0.10%
160 (70)
2 Hours
280 (135)
2–3 Hours
0.01%–0.20%
Nozzle Type General Purpose Nylon or
Reverse Taper General Purpose General Purpose General Purpose General Purpose General Purpose General Purpose
Injection Velocity1 2–5 in/sec; 50–127 mm/sec
Injection Pressure 1,000–2,000 psi; 7–14 Mpa
Back Pressure 50–100 psi; 0.3–0.7 Mpa
Screw Speed 25–75 RPM
Cushion 0.125–0.250 in; 3–6 mm
Screw Compression Ratio2 2.0:1–2.5:1
Comments
1.
Venting Guidelines by Resin
• PC: .001"–.002" depth & .250" width
• PC/PSU: .002"–.003" depth & .250" width
• PES: .003"–.004" depth & .250" width
• PEI: .001"–.003" depth & .250" width
• PP: .001"–.002" depth & .250" width
• ABS: .0015"–.0025" depth & .250" width
• PEEK: .002"–.004" depth & .250" width
FIGURE 40 - Venting Guidelines
Vent Groove
Vent Land
Vent
FIGURE 44 - Venting guidelines
FIGURE 43 - Venting areas
20 Gravi-Tech
CHAPTER 5 | PROCESS OPTIMIZATION
Process optimization ensures a quality process and
minimizes cycle time.
