profile die

profile die

[′prō‚fīl ‚dī]
(engineering)
A plastics extrusion die used to produce continuous shapes, but not tubes or sheets.
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introduces software called Profile Digitizer that allows quick and easy profile die development with the aid of a mobile phone camera.
The use of a developed flow assumption on die cross sections is well established in work on profile die optimization (23-25).
During the coextrusion process, melts of the same or different plastics are combined before they exit the profile die, hardening to a compound in the calender.
RW+ Besides three-dimensional computational fluid dynamic (CFD) calculations (a challenge to set-up and run, and review results so as to adjust dies), the "Profile Die Module" of the VEL offers a design tool that is quick and simple to use for profile die design in particular.
The second funcdon is to overcome the no-slip boundary condition on the surfaces of the profile die so that the profile has a smooth "skin"--known as "external" lubrication.
Ausen, Seth, and Venne have developed a method for coextruding an initial melt stream through a profile die with a die insert.
The effect of rheological change caused by the filler content on the flow balance of an uneven thickness, U-shaped profile die was experimentally investigated.
The Alpha series can also be supplied as part of a turnkey line with a customised profile die and the Alpha protech downstream unit which includes a 6 m calibration table, a belt or caterpillar haul-off for line speeds of up to 20 m/min, a cut-off assembly and a tilting device all controlled by a PLC with six languages that can be adjusted to customer-specific requirements and operated through a 6 inch touch display screen.
The accompanying figures below show the interface shape (shown in blue color), velocity, and pressure distributions in a complex profile die predicted by the polyXtrue coextrusion die design module.
The cost of the preliminary tests and corrections of a profile die may be as much as 10-50% of the total cost (9).
Are you using the right screw--the one for which the profile die was originally developed?
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