Tubular free-shaped article
AssigneeExxonMobil Chemical Patents Inc.
InventorsAndre Van Meerbeek, Antonius van Meesche, Andre Goossens
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Abstract
The invention relates to a process for manufacturing of tubular free-shaped articles having an inner polymer layer and an outer polymer layer by co-extruding at least two different polymers in an extruder apparatus comprising an extrusion die and at least two extruder barrels/heads. The invention furthermore relates to a tubular free-shaped article comprising at least two layers of different polymers and which article is obtained by the process according to the invention.
Claims16
A process for manufacturing a tubular shaped co-extruded article comprising processing at least two different polymers in an extruder apparatus comprising:
- an extrusion die adapted to form a tubular extrudate;
- at least two extruder barrels/heads adapted to extrude said polymers through said extrusion die in order to form a tubular polymeric extrudate having an inner polymer layer (A) and an outer polymer layer (B);
- and
- wherein said extruder barrels discharge through said extrusion die which is controllably connected to a robotic handling unit.
Dependencies are inferred from the claim text.