Micro-layer combining adapter for extrusion

A new combining adapter from Davis-Standard is designed to simplify infield interchangeability of polymer flow paths from multiple extruders for improved layer uniformity, accuracy, control and quick change when processing multilayer extrusion coatings and films.

The adapter features a cartridge assembly body or cassette comprised of individual cavities with precision layer inserts and divider walls to create passageways. The layering inserts form flow channels that can be individually selected or changed to accommodate polymer feed path flows. Each insert can also divide one polymer inlet feed into two channels and accurately meter flows to a common region.

The adapter offers the capability to process a larger number of layers within a smaller package using interchangeable layering plates or inserts which can be customized based on polymer rheology.

Additionally, the design allows the use of custom inserts to form definitive and positioned lanes in the final extrudate from the die.

Davis-Standard, LLC (Pawcatuck, Conn.); www.davis-standard.com; 860-599-1010

AuxiPlast Inc. (Ste-Julie, Que.); www.auxiplast.com; 866-922-2894