PURGE CONCENTRATE CLEANING EXTRUSION

Brand	Owner	Address	Description
POLYPURGE	POLYONE CORPORATION	I.P. Department 33587 Walker Road Avon Lake OH 44012	Purge concentrate for cleaning extrusion and injection molding machinery;POLY PURGE;
	Where the owner name is not linked, that owner no longer owns the brand

Technical Examples

The present invention relates to a system and method suitable for automatic cleaning of a coating or extrusion head of a coating apparatus. The invention includes a scrubbing station wherein a combination of physical contact and strong solvent solution combine to remove coating fluid from the exterior of an extrusion head. A second cleaning station, preferably a rinsing station then further cleans the head of coating fluid and removes solvent used at a first cleaning station. The solvent used at the rinsing station is preferably self-drying thereby obviating the need for any further cleaning action. The invention also provides for the ability to prime the coating bead at the extrusion head so as to have a fully formed bead ready before the head begins coating a substrate, thereby providing an even coating across said substrate. The priming operation preferably comprises holding the head steady over a rotating priming roller while extruding fluid preferably at a constant volumetric flow rate. The extrusion head is removed from the priming station when the coating bead is properly formed, and the extruded coating material is dissolved in a solvent bath at the priming station. The priming operation may also be performed at either of the cleaning stations.