Method of making a water-soluble polymer composition
AssigneePeter Morris Research and Development Limited
InventorPeter Morris
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Abstract
A method of creating a processable water soluble polymer, the method comprising the steps of: extruding a water soluble polymer composition from an extruder barrel without use of a die, wherein the extruder barrel is not vented other than via its extruder outlet, to produce an irregularly shaped polymer extrudate; directing the irregularly shaped polymer extrudate onto a chilled conveyor to cool the irregularly shaped polymer extrudate to below 60° C.; and granulating the irregularly shaped polymer extrudate to form a granulate.
Claims13
A method of creating a processable water soluble polymer, the method comprising the steps of:
- extruding a water soluble polymer composition from an extruder barrel without use of a die, wherein the extruder barrel is not vented other than via its extruder outlet, to vent steam through the extruder outlet only and thereby produce an irregularly shaped polymer extrudate;
- directing the irregularly shaped polymer extrudate onto a chilled conveyor to cool the irregularly shaped polymer extrudate to below 60° C.;
- and
- granulating the irregularly shaped polymer extrudate to form a granulate
- wherein the polymer comprises a polyvinyl alcohol polymer.
Dependencies are inferred from the claim text.