Stuffer crimping apparatus
AssigneeAkzona Incorporated
InventorBernd Weber
Life of this patent
Estimating the term…
Abstract
A stuffer crimping apparatus in which an outer hollow wheel and an inner roller wheel are mounted on eccentrically positioned rotatable shafts with the outer rolling surface of the inner wheel being pressed toward the inner rolling surface of the outer hollow wheel to form an extended nip zone engaging the yarn. The two wheels also form between their rolling surfaces a yarn feed chamber at the entry to the nip zone and a crimping or stuffing chamber adjacent the exit of the nip zone. The apparatus is particularly useful for crimping synthetic thermoplastic yarns.
Claims10
A stuffer crimping apparatus for crimping a synthetic thermoplastic yarn, said apparatus comprising:
- an outer rotatable hollow wheel having an inner circular rolling surface:
- an inner rotatable wheel having an outer rolling surface of smaller diameter than the inner diameter of the circular rolling surface of said outer wheel, the axis of rotation of said inner wheel being eccentric to the axis of rotation of said outer wheel, means to press the rolling surfaces of the two wheels toward each other to form a nip zone for rolling engagement with said yarn fed therebetween;
- means to rotate each wheel in the same direction and at the same peripheral speed of said rolling surfaces;
- flange means on one side of said outer hollow wheel forming a yarn feed chamber between the two rolling surfaces at the entry to said nip zone and also forming a yarn crimping chamber between the two rolling surfaces at the exit from said nip zone;
- means to introduce the yarn into said feed chamber;
- means to withdraw the yarn from said crimping chamber;
- gate means to oppose the movement of yarn through said crimping chamber;
- means enclosng said nip zone and crimping chamber;
- and
- means to heat the yarn for stuffer crimping.
Dependencies are inferred from the claim text.