Polyurethane roller coating device for carpet backing

摘要

A device for applying a polyurethane mixture to a backstitch side of a greige includes: a tensioning roller rotatable in a first direction; an application roller arranged adjacent to the application roller and rotatable in a second direction opposite to the first direction, the tensioning roller and the application roller positioned transversely and adjacent to a path of travel of the greige on the backstitch side of the greige, the tensioning roller rotatable against a feed direction of the greige, the application roller rotatable in the feed direction of the greige; and a dispenser configured to create a puddle of the polyurethane mixture between the tensioning roller and the application roller.

主权项

1. A device for applying a polyurethane mixture to a backstitch side of a greige, comprising:
a tensioning roller rotatable in a first direction; an application roller arranged adjacent to the application roller and rotatable in a second direction opposite to the first direction, the tensioning roller and the application roller positioned transversely and adjacent to a path of travel of the greige on the backstitch side of the greige, the tensioning roller rotatable in the feed direction of the greige and arranged to engage the greige; a polyurethane dispenser configured to create a puddle of polyurethane mixture including polyol, isocyanate, filler, and a catalyst, the polyurethane dispenser disposed between the tensioning roller and the application roller; and a first pressure element arranged opposite to the tensioning roller configured to press the greige therebetween and a second pressure element arranged opposite to the application roller configured to press the greige therebetween wherein the first pressure element and the second pressure element are configured for vertical upward motion to provide upward pressure against the greige upon coating of the backstitch side of the greige that begins to cure into a polyurethane foam.