Patent · US Expired

Tubular bag machine having a device for keeping the inside of a flexible film tube free from dust in its sealing region

US5581984A · kind A · utility

9Cited by

6References

5Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Klaus Domke · Ditzingen, DE
Herbert Stotkiewitz · Bietigheim-Bissingen, DE
Anton Nieskens · Vallendar, DE

Key dates

Filing date	Nov 1, 1995
Grant date	Dec 10, 1996
Priority date	—
Expiry date	Nov 1, 2015

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB65B1/28
WIPO fieldHandling
WIPO sectorMechanical engineering

Abstract

A tubular bag machine has between a filling tube and a shaping tube at least two sealing elements, which divide an annular space, formed by the filling tube and shaping tube, into a feed channel and a suction-removal channel. The two channels are connected to a suction device with a filter by connecting lines. The design and arrangement of the sealing elements produce a closed circuit for the air or inert gas used for dust removal.

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