Patent · US Expired

Roller system for continuous transport of webs of sheeting

US4029249A · kind A · utility

14Cited by

4References

4Claims

0Family size

Assignee

BASF SE

Inventors

Peter Nagel · Highlands, US
Werner Grau · Frankenthal (Pfalz), DE
Hermann Maier · Erlangen, DE
Heinrich Wittkamp
Roland Falk · Achern, DE
Paul Willmann

Key dates

Filing date	Sep 12, 1975
Grant date	Jun 14, 1977
Priority date	—
Expiry date	Sep 12, 1995

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB65H2404/1363
WIPO fieldHandling
WIPO sectorMechanical engineering

Abstract

A high-speed roller system for transporting webs of sheeting, preferably for coating the same with a magnetic layer, comprising a suction roller for control of the speed of the web, which suction roller has a surface containing grooves, preferably rhombic grooves, in which the perforations for sucking the sheeting are disposed, preferably at the points of intersection, the ratio of the total cross-sectional area of the perforations to the total surface area of the roller being from 0.7 to 3%.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.