US 11,833,734 B2
Pressure roller arrangement, in particular for a longitudinal stretching system and an associated stretching system and a method for operating such a pressure roller arrangement
Hannes Hacksteiner, Saalfelden (AT); Jakob Kreitmair, Siegsdorf (DE); Marvin Bösl, Übersee (DE); Konrad Wolfgruber, Traunstein (DE); and Anton Edfelder, Unterwössen (DE)
Assigned to BRÜCKNER MASCHINENBAU GmbH, Siegsdorf (DE)
Filed by BRÜCKNER MASCHINENBAU GmbH, Siegsdorf (DE)
Filed on Sep. 15, 2020, as Appl. No. 17/021,211.
Claims priority of application No. 10 2019 124 865.5 (DE), filed on Sep. 16, 2019.
Prior Publication US 2021/0078239 A1, Mar. 18, 2021
Int. Cl. B29C 55/18 (2006.01); B29L 7/00 (2006.01)
CPC B29C 55/18 (2013.01) [B29L 2007/002 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A pressure roller arrangement, for a longitudinal stretching system for stretching a plastic film, comprising:
a pressure roller with a roller body or roller body section with a roller surface,
the roller body or roller body section has an axial length,
the roller body or roller body section comprises, at least in one axial partial length, a nip roller film pressing region,
wherein the pressure roller arrangement further comprises a drive device,
wherein the drive device comprises a direct drive detachably mounted on at least one end-face of the pressure roller,
the direct drive protrudes only by a maximum of a partial length of less than 50% of its entire axial length beyond the end-face of the pressure roller, and
rotating parts of the direct drive are in rotational connection with the roller body or roller body section of the pressure roller.