The extrusion process

Plastic granulate is supplied via the feed hopper to the extruder

Homogenous melted material from thermoplastic granulate under high pressure in an extruder (screw press) or co-extruder

Shaping of the molten mass to a continuous web by means of flat sheet dies

Calibration of the emerging material to the desired thickness using a 3-roller flattening calender

Tension-free cooling of the web to ambient temperature

Cutting to required width and length and subsequent stacking on pallets

Optionally, rolling of films on rolls

Care of the material is a decisive feature in this procedure. ER&GE therefore uses an extruder which, because of its modern design and generous proportions, guarantees a production process which cares for the material. Flow-optimised flat sheet dies ensure homogeneous material distribution. High precision calender rollers with constant temperature regulation ensure exact thickness, even surfaces and optimum flatness. An especially long cooling section in an air-conditioned, production environment guarantees the tension-free cooling of sheets and films resulting in minimal shrink, non-warping products. ER&GE produces both single layer and multi-layer sheets and films.

The manufacture of multi-layered products is achieved by a co-extrusion process. During co-extrusion, molten material from two extruders is fused together, resulting in films and sheet material with the required layer structure. The layer structure is set using the appropriate adapters.

ER&GE has dedicated itself to staying at the leading edge of technology in the development of semi-finished products for the future. We aim to meet this objective through consistent, strategic investment in our production systems and continuous development of our processes.

Product ID stripe

An extruded stripe for individual colour recognition of our customers’ products to simplify material management and quality control.