Process and device for guiding and keeping a material web spread

US5575414A · kind A · utility

Assignee

• Erhardt & Leimer GmbH · DE

Inventors

• Alois Groninger · Augsburg, DE
• Werner Geyer · Newton, US
• Hans Seibold · Bendorf, DE

Key dates

• Filing date: Jan 3, 1995
• Grant date: Nov 19, 1996
• Expiry date: Jan 3, 2015

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B65H23/022
• WIPO field: Handling
• WIPO sector: Mechanical engineering

Abstract

A process and apparatus for guiding and keeping a material web spread out uses a spreading roll and with contact pressure elements and a control member controlled by a control system monitors the control path in a way such that the spacing of the contact pressure elements from the spreading roll is varied. Because of the advantages that the control path has in the present case, a rapid and stable control of the position of the material web is assured. This is advantageous especially in connection with highly sensitive material webs such as, for example, wide-meshed textile webs.