Abstract A method and apparatus are disclosed for producing randomly slubbed textile yarns. The method involves passing the yarn through a zone of fluid turbulence having a pair of counterdirectional fluid streams maintained under different fluid pressures. The yarn passing between these counterdirectional fluid streams is alternately treated in opposing directions, with slubs being formed at the null points between the opposite directional treatments. Due to the uneven fluid pressures employed, the length of treatment in each direction along the yarn is not consistent, thus leading to slubs at various points along the length of the yarn. A fluid jet is also disclosed for accomplishing this result. The fluid jet includes a pair of interconnected and overlapping passageways which form a chamber through which the yarn passes, with each passageway having one or more fluid inlets arranged to direct fluid circumferentially around it and with the fluid streams being counterdirectional to one another. The fluid inlets for each passageway are fed fluid at uneven or different fluid pressures to accomplish the random slubbing effect.
Inventors
👤 Alan T. McDonald
Bibliographic Details
Application Number—
JurisdictionUS
Data Sourcegoogle_patents
Last Synchronized2026-10-25 00:48
CPC Classifications
D; D02; D02G; D02G3/00; D02G3/22; D02G3/34
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
165 words
A method for forming a randomly slubbed yarn comprising passing a textile yarn through a fluid jet having a pair of passageways along its length, said passageways being interconnected and overlapped along their lengths and having at least one fluid inlet in fluid flow communication therewith, introducing the strand into one of said passageways while directing a fluid circumferentially around said passageway at a first pressure to thereby treat said yarn with said fluid while moving the strand around the wall of said passageway, passing said yarn to said second passageway while directing a fluid circumferentially around said second passageway at a second pressure in the opposing direction to said directing of said fluid in said first passageway to thereby treat said yarn with said fluid in said second passageway while moving the strand around the wall of said second passageway and alternating said yarn between said passageways in a random pattern during its passage through the jet to thereby produce a randomly slubbed yarn.
Claim 2
Independent Claim
165 words
A method for forming a randomly slubbed yarn comprising passing a textile yarn through a fluid jet having a pair of passageways along its length, said passageways being interconnected and overlapped along their lengths and having at least one fluid inlet in fluid flow communication therewith, introducing the strand into one of said passageways while directing a fluid circumferentially around said passageway at a first pressure to thereby treat said yarn with said fluid while moving the strand around the wall of said passageway, passing said yarn to said second passageway while directing a fluid circumferentially around said second passageway at a second pressure in the opposing direction to said directing of said fluid in said first passageway to thereby treat said yarn with said fluid in said second passageway while moving the strand around the wall of said second passageway and alternating said yarn between said passageways in a random pattern during its passage through the jet to thereby produce a randomly slubbed yarn.
Claim 3
Dependent Claim
24 words
The method of claim 1 wherein said fluid pressures are between about 5 and 80 psig (0.35 and 5.6 kilograms per square centimeter gauge).
Claim 4
Dependent Claim
10 words
The method of claim 1 further comprising winding said yarn.
Claim 5
Dependent Claim
13 words
The method of claim 3 further comprising applying a binder to said yarn.