SPE Extrusion Division 1-0-Wiki



Extrusion 1-0-Wiki Pages

Search the Wiki


Account Management


Brought to you by:
The SPE Extrusion Division
Board of Directors


Profile Die Design

Modified on Monday, 02 February 2015 01:10 PM by mpieler Categorized as Extrusion Hints
Profile Die Design
Vol. 27 #1, March 2000

Good profile die design starts with an understanding of the rheology (study of melt flow) of the thermoplastic that will ultimately be used to extrude product from the profile die. Two key factors that one must study are die swell (actually the swell of the thermoplastic as it exits the die lip) and land length ratio (the length of steel that runs parallel to the melt path). Material suppliers will share the shear/stress curves for predictability of a thermoplastic at a given rate.

- Dan Cykana, Bemis Mfg. Co.

See also:
  • Rheology
  • Rules of thumb

Return to Extrusion Hints
Some of the icons were created by FamFamFam.