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CALCULATOR FOR TIP AND DIE

This calculator allows you first to calculate a theoretical diameter for the tip and die based on factors DDR ("Draw Down Ratio") and DRB ("Draw Ratio Balance") on the left column. 
Then, from these values ​​and your actual disposable tooling, you can deduct the DDR and the DRB you will practically use (right column). 
Values ​​DDR and DRB depend on the type of polymer. A series of values ​​collected from the literature is available on the right of this section.
Extrusion 2

THEORETICAL VALUES

PRACTICAL VALUES

Calculate
Clear
ØA [mm] or [inch]
ØB [mm] or [inch]
DDR [-]
DRB [-]
ØD [mm] or [inch]
ØC [mm] or [inch]

Polymer DDR DRB
PVC 1.2-4 ~1
PA-6 6-12 ~1
PA-6.6 4-15 ~1
PA-12 4-15 ~1
PE 1.2-4 ~1
XLPE 1.3-2 ~1
PEX-B 4 ~1
PP 4-10 ~1
PUR 2-10 ~1
EVOH 6-18 ~1
PBT 9-16 ~1
PEEK 20 ~1
COP 80-150 ~1
LSOH 1-1.5 ~1
TPE 5-20 ~1
FEP 10-150 ~1
PFA 10-250 ~1
HYTREL 10-25 ~1
ETFE 10-50 ~1
PVDF 9-25 ~1

Contact

EROCARB SA

La Pomelaz 6
1429 Giez
Switzerland

T +41 24 446 23 03
F +41 24 446 23 51
Email :  info@erocarb.ch
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