Method for extruding and labelling a cylindrical product
AssigneeAisapack Holding S.A.
InventorsJacques Thomasset, Eduardo Rey
Life of this patent
Estimating the term…
Abstract
The method for extruding and labeling a packaging tube comprises the following successive steps: a) forming a partially or totally tubular label from a film in a shaper; b) inserting the label into a calibration element; c) extruding a tubular body at the concave-face side of the label in an extrusion head; d) bringing the outer face of the extruded tubular body into contact with the concave face of the label. In the method, the label comprises at least one layer of which the melting temperature is at least 20° C. higher than the melting temperature of the extruded tubular body. A first pressure difference is formed in the extruded tube with an air jet.
Claims17
A method of extruding and labeling a packaging tube by an extrusion-labeling line comprising the steps of:
- (a) forming a partially or totally tubular label from a film in a shaper;
- (b) introducing the tubular label into a calibration element;
- (c) extruding a tubular body on a side of a concave face of the tubular label in an extrusion head;
- and
- (d) bringing an external face of the extruded tubular body into contact with the concave face of the tubular label to produce a labelled packaging tube, by creating a first pressure difference between an interior and the external face of the extruded tubular body by an air jet, the first pressure difference generated by a first floating plug arranged downstream of the shaper that at least partially obstructs an escape of air via the interior of the tubular body, the first floating plug not mechanically attached along a direction of a movement of the extrusion and being at a fixed position where the extruded tubular body is solidified and retained at said position by a magnetic force while the extruded tubular body is moved downstream past the first floating plug.
Dependencies are inferred from the claim text.