Title:
【発明の名称】帯材、特にペーパストリップ又は厚紙ストリップ、プラスチックシート又は金属シート用の引張りローラ
Document Type and Number:
Japanese Patent JP2002527320
Kind Code:
A
Abstract:
Draw rollers for striplike materials (especially paper or cardboard strips, plastic or metal foils), having a sheath (1) that can rotate around a fixed inner component, whereby said sheath is provided with air holes along the entire surface thereof, are already known per se. A vacuum chamber (8) is arranged in the winding area of the strip. Said vacuum chamber (8) can be subjected to an underpressure. According to the invention, another vacuum chamber (8) is arranged inside the sheath (1) in the running direction of said strip (2) directly in front of the vacuum chamber (8), whereby the underpressure in the second vacuum chamber is greater than the underpressure in the first vacuum chamber (8) and is independent thereof. The upstream second vacuum chamber (8) enables the separating layer of air adhering to the strip (2) to be suctioned in a targeted manner, whereby the contact surface of the strip (2)/roller remains large enough to transmit high drawing forces.
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Inventors:
Bruno Holtmann
Konrad Desovic
Konrad Desovic
Application Number:
JP2000577105A
Publication Date:
August 27, 2002
Filing Date:
September 23, 1999
Export Citation:
Assignee:
Bachfen und Myr-Akchen Gesellshaft Machine-Nenfabrik
International Classes:
B65H20/12; F16C13/00; (IPC1-7): B65H20/12
Attorney, Agent or Firm:
Toshio Yano (4 outside)