Process and device for axial shirring of a tubular material using an air stream
OwnerGunter Kollrossinventor
Life of this patent
Estimating the term…
Abstract
The axial shirring of thin walled inflated tubular material, especially for sausage manufacture, with a mandrel providing a radial bracing in its interior, occurs in combination with at least one air stream directed obliquely against the axis of the tubular material, wherein the air stream force is allowed to revolve about the said axis as the tubular material moves axially along the mandrel. The tubular material is thereby axially compacted against a stop with formation of regular folds or "shirrings". Shirring formation can be readily influenced by changing the air pressure. The nozzle or nozzles is or are connected to a source of compressed air and can be directed obliquely against the mandrel axis as it or they revolve about the said mandrel axis.
Claims14
A process for axial shirring of a thin walled tubular material such as a sausage casing material, comprising the steps of:
- delivering the tubular material axially along a mandrel which braces the interior thereof, as the forward end of the tubular material engages a back-up means,
- and axially compacting the tubular material, as it is being delivered along the mandrel, by forming shirrings therein by directing at least one air stream against the tubular material in a direction which is toward the direction of travel of the tubular material and oblique relative to the axis of the tubular material, wherein the air stream force revolves about the axis of the tubular material.
A device for axial shirring of a thin walled tubular material such as a sausage casing material, comprising:
- a mandrel means for receiving a tubular material movable therealong and for bracing the interior of the tubular material, a back-up positioned to be engaged by the forward end of the tubular material which has been moved axially along the mandrel,
- shirring means for axially compacting the tubular material, as it moves along the mandrel, by forming shirrings therein, said shirring means comprising means for delivering at least one air stream against the tubular material toward the direction of travel of the tubular material and obliquely relative to the axis of the tubular material,
- and means for causing the force of the air stream to revolve about the axis of the tubular material.
Dependencies are inferred from the claim text.