https://www.avient.com/sites/default/files/2023-04/OnFlex TPE - Snow Flap - Application Snapshot.pdf
All Rights Reserved
https://www.avient.com/products/thermoplastic-elastomers/onflex-thermoplastic-elastomers
https://www.avient.com/sites/default/files/2020-12/case-study-versaflex-ce-antimicrobial-phone-case-1.pdf
https://www.avient.com/products/thermoplastic-elastomers/versaflex-thermoplastic-elastomers
https://www.avient.com/sites/default/files/resources/NOVEL_THERMOPLASTIC_ELASTOMERS_FOR_UNIVERSAL_OVERMOLDING_ON_DISSIMILAR_THERMOPLASTICS.pdf
Results and Discussion
TPE-1
TPE-1 is a translucent material of 45 Shore A.
Figure 3 shows the capillary viscosity
of TPE-1 and TPE-2 at 200oC.
Bibliography
1.
https://www.avient.com/sites/default/files/2020-09/lubrione-processing-guide.pdf
BASE
RESIN PPA PC PSU PES PPS
CO-
POLYMER
ACETAL
PEEK PA
Barrel Temperatures* °F (°C)
Rear Zone 550–580
(288–305)
520–560
(271–293)
600–640
(316–338)
630–660
(332–338)
550–580
(288–304)
350–370
(177–188)
660–700
(349–371)
440–490
(227–254)
Center Zone 560–600
(293–316)
530–570
(277–299)
620–670
(327–354)
650–680
(343–360)
560–615
(293–324)
380–390
(193–200)
700–730
(371–388)
470–510
(243–266)
Front Zone 580–620
(304–327)
550–580
(288–305)
630–680
(332–360)
670–730
(354–388)
590–630
(310–332)
390–430
(200–221)
720–750
(382–400)
490–540
(254–282)
Nozzle 575–615
(302–324)
550–600
(288–316)
630–680
(332–360)
680–700
(360–371)
600–625
(316–330)
380–415
(193–213)
720–750
(382–400)
520–570
(271–300)
Melt
Temperature
575–615
(302–324)
560–600
(293–316)
625–675
(330–358)
650–710
(343–377)
600–625
(316–330)
370–410
(188–210)
670–740
(354–393)
520–570
(271–300)
Mold
Temperature
250–300
(121–150)
175–240
(80–116)
190–300
(88–150)
225–325
(107–164)
250–325
(121–164)
150–225
(66–107)
290–375
(143–190)
150–200
(66–93)
Pack & Hold
Pressure
50%–75%
of Injection Pressure
Injection
Velocity
in/s
1.0–3.0
Back Pressure
psi 50
Screw Speed
rpm 50–90
Drying
Parameters
°F (°C)
6 hrs @ 175
(80)
4 hrs @ 250
(121)
4 hrs @ 275
(135)
4 hrs @ 300
(150)
4 hrs @ 250
(121)
2 hrs @ 200
(93)
3 hrs @ 300
(150)
4 hrs @ 180
(82)
Allowable
Moisture
%
< 0.05 < 0.02 < 0.02 < 0.04 < 0.02 0.15–0.20 < 0.02 0.10–0.20
Cushion
in 0.125–0.250
Screw
Compression
Ratio
2.5:1–3.5:1 2.0:1–2.5:1 2.5:1–3.5:1 2.5:1–3.5:1 2.5:1–3.5:1 2.5:1–3.5:1 2.5:1–3.5:1 2.5:1–3.5:1
Nozzle
Type
General
General
General
General
General
General
General
Reverse
Taper
Clamp
Pressure 5–6 Tons/in2 of projected area of cavities and runner system
* Barrel temperatures should be elevated for compounds designed for electrical insulative properties.
Step each 90° bend in the system down in size (from sprue to gate) approximately 1/16" (1.5mm)
to reduce pressure drop
Draft Angle • Maintain a minimum draft angle of 1/2° per side.
https://www.avient.com/sites/default/files/2020-09/edgetek-processing-guide.pdf
Base Resin PPA PC PSU PES PPS
Co-
polymer
Acetal
PEEK PA
Barrel Temperatures* °F (°C)
Rear Zone 550–580
(288–305)
550–590
(288–310)
600–640
(316–338)
630–660
(332–338)
550–580
(288–304)
350–370
(177–188)
660–700
(349–371)
440–490
(227–254)
Center Zone 560–600
(293–316)
570–600
(300–316)
620–670
(327–354)
650–680
(343–360)
560–615
(293–324)
380–390
(193–200)
700–730
(371–388)
470–510
(243–266)
Front Zone 580–620
(304–327)
580–630
(304–322)
630–680
(332–360)
670–730
(354–388)
590–630
(310–332)
390–430
(200–221)
720–750
(382–400)
490–540
(254–282)
Nozzle 575–615
(302–324)
580–630
(304–322)
630–680
(332–360)
680–700
(360–371)
600–625
(316–330)
380–415
(193–213)
720–750
(382–400)
520–570
(271–300)
Melt
Temperature
575–615
(302–324)
580–625
(304–330)
625–675
(330–358)
650–710
(343–377)
600–625
(316–330)
370–410
(188–210)
670–740
(354–393)
520–570
(271–300)
Mold
Temperature
250–300
(121–150)
175–240
(80–116)
190–300
(88–150)
225–325
(107–164)
250–325
(121–164)
190–250
(88–121)
290–375
(143–190)
150–200
(66–93)
Pack & Hold
Pressure
50%–75%
of Injection Pressure
Injection
Velocity
in/s
1.0–3.0
Back Pressure
psi 50
Screw Speed
rpm 50–90
Drying
Parameters
°F (°C)
6 hrs @ 175
(80)
4 hrs @ 250
(121)
4 hrs @ 275
(135)
4 hrs @ 250
(121)
3 hrs @ 300
(150)
2 hrs @ 200
(93)
3 hrs @ 275
(135)
4 hrs @ 180
(82)
Cushion
in 0.125–0.250
Screw
Compression
Ratio
2.5:1–3.5:1 2.0:1–2.5:1 2.5:1–3.5:1 2.5:1–3.5:1 2.5:1–3.5:1 2.5:1–3.5:1 2.5:1–3.5:1 2.5:1–3.5:1
Nozzle
Type
General
General
General
General
General
General
General
Reverse
Taper
Clamp
Pressure 5–6 Tons/in2 of projected area of cavities and runner system
* Barrel temperatures should be elevated for compounds designed for electrical insulative properties.
Step each 90° bend in the system down in size (from sprue to gate) approximately 1/16" (1.5mm) to
reduce pressure drop
Draft Angle • Maintain a minimum draft angle of 1/2° per side.
https://www.avient.com/sites/default/files/2024-03/Modular Wall Construction_Case Study Snapshot.pdf
https://www.avient.com/products/advanced-composites/continuous-fiber-composite-panels/polystrand-thermoplastic-composite-panels
https://www.avient.com/sites/default/files/2024-03/Railcar Door_Case Study Snapshot.pdf
https://www.avient.com/products/advanced-composites/continuous-fiber-composite-panels/crtm-panels
https://www.avient.com/sites/default/files/2023-06/Trilliant HC-auto-injector-snapshot.pdf
https://www.avient.com/products/engineered-polymer-formulations/chemical-corrosion-resistant-formulations/trilliant-hc-healthcare-thermoplastics
https://www.avient.com/sites/default/files/2024-04/Adventure Camping_Case Study Snapshot_v3.pdf
https://www.avient.com/products/advanced-composites/continuous-fiber-composite-panels/polystrand-thermoplastic-composite-panels
https://www.avient.com/sites/default/files/2023-08/Polystrand aPET Thermoplastic Composites for Cargo Trailers Application Snapshot.pdf
https://www.avient.com/products/advanced-composites/continuous-fiber-composite-panels/polystrand-thermoplastic-composite-panels