Extrusion Dies and Feedblocks 

Due to the specific characteristics of the processed polymers and the wide range of dimensions of the film and sheets, there is a need in extensive possibilities to design each die to the requirements.

We offer to our customers outstanding designed manifolds of the Extrusion Dies tailored to the respective materials. For optimal melt distribution the coat-hanger manifold and the melt flow are simulated in great detail with the rear of the manifold flow channel in a rounded shape.

• slit widths from 145 to 4000 mm
• Finish on all flow surfaces: Ra 0.05 – 0.08 µm
• Surface finish on lip lands: Ra 0.02 – 0.04 µm
• Die body completely manufactured from tool steel, improved to 1100 N/mm2

• Different coatings: Chromium, Chromium Nitrite, Nickel, Non-stick, etc.
• Lip adjustment: Pressure, push-pull, automatic
• Restrictor bar: for more flexibility in raw materials and thickness range
• Upper lip: flexible, integrated in the die body
• Lower lip: fixed, removable or slidable, parallel adjustment even in operation mode
• Lateral deckling: externally fixed, externally adjustable, internally adjustable
• Insulation
• Lip tempering, lip heating
• Connection adapter for coextrusion
• Fastening and suspension attachments
• Trolley

Feedblocks are used for Coextrusion.  They enable complex applications of up to 7 layers. The esde Feedblocks are equipped with fine adjusters to vary each layer in operation mode.  All flow channels are individually supplied and purged with fresh melt.  Exchangeable selector plugs allow different layer structures. 

For particularly demanding coextruded film and sheets we offer Multi-channel Dies.