Patent ID: 9616606
Date: 2017-04-11
CPC Classifications: B29C

Claim:
1. A device for sizing and cooling an extruded flat product made of plastic material, the device comprising: at least two main rolls; a polishing stack including a plurality of downstream rolls arranged one behind the other and disposed downstream of the at least two main rolls; wherein the at least two main rolls and the downstream rolls have respective diameters such that a contact area between the flat product and the at least two main rolls and the downstream rolls is substantially the same on both sides of the flat product; and wherein an adjustable sizing nip is disposed between the adjacent pairs of the downstream rolls and between one of the at least two main rolls and an adjacent one of the downstream rolls, each adjustable sizing nip being individually adjustable during an extrusion process so as to pinch the flat product to a greater or a lesser extent.