Patent · US Expired

Apparatus for longitudinally welding and severing a thermoplastic packaging hose

US6289961A · kind A · utility

3Cited by

3References

11Claims

0Family size

Assignee

SIG Pack Systems, AG · CH

Inventors

Gunther Bausch · Immendingen, DE
Alfred Wipf · Jestetten, DE

Key dates

Filing date	Feb 8, 2000
Grant date	Sep 18, 2001
Priority date	—
Expiry date	Feb 8, 2020

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T156/1741
WIPO fieldOther special machines
WIPO sectorMechanical engineering

Abstract

An apparatus for longitudinally welding and severing superposed thermoplastic films forming a packaging hose includes first and second feed rollers each having an outer periphery contacting one another for advancing the films passing therebetween; a drive for rotating at least one of the feed rollers; a circular heating disk mounted in the first feed roller coaxially therewith and having an outer diameter greater than the peripheral diameter of the first feed roller; and a circumferential groove provided in the second feed roller in alignment with the heating disk. Peripheral portions of the heating disk project into the circumferential groove of the second feed roller.

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