Trilobal filaments and spinnerets for producing the same
AssigneeAladdin Manufacturing Corporation
InventorsMaarten Meinders, Paul Pustolski
Life of this patent
Estimating the term…
Abstract
Various implementations include a spinneret plate defining a plurality of capillaries, including a first, second, and third capillary portions with a substantially hexagonal central area therebetween. The substantially hexagonal central area is joined to the spinneret plate by first and second legs being radially spaced apart and separate by a first apex of the substantially hexagonal area. A filament is formed by a polymer exiting the end of the capillary in three separate strands having the shape of the openings, and each strand bulges radially outwardly such that the strands merge together.
Claims17
A spinneret plate defining a plurality of capillaries, each capillary comprising:
- a first capillary portion, a second capillary portion, a third capillary portion, and a substantially hexagonal central area, wherein the first capillary portion comprises a substantially triangular extrusion area and a first capillary portion major axis along a line from a center of the substantially hexagonal central area through a distal apex of the first capillary portion;
- wherein:
- the substantially hexagonal central area is joined to the spinneret plate by first and second legs, the legs being radially spaced apart and separated by a first apex of the substantially hexagonal central area;
- each leg comprises a first edge and a second edge;
- the first leg comprises a leg length extending between a first leg first point and a first leg second point wherein the first leg first point is located at an intersection of the spinneret plate and the first edge of the first leg, and the first leg second point is located at an intersection of the substantially hexagonal central area and the first edge of first leg;
- the second leg comprises the leg length extending between a second leg first point and a second leg second point wherein the second leg first point is located at an intersection of the spinneret plate and the second edge of the second leg, and the second leg second point is located at an intersection of the substantially hexagonal central area and the second edge of second leg;
- and
- the first capillary portion is bounded by:
- the first apex of the substantially hexagonal central area;
- a first apex first side straight line from the first apex to the first leg second point;
- a first leg first edge straight line from the first leg second point to the first leg first point;
- a first substantially straight side edge extending from the first leg first point to the distal apex;
- a second substantially straight side edge extending from the distal apex to the second leg first point;
- a second leg second edge straight line from the second leg first point to the second leg second point;
- and
- a first apex second side straight line from the second leg second point to the first apex.
Dependencies are inferred from the claim text.