Abstract: A twist-free continuous filament heather yarn of reduced streakiness and chevroning and muter appearance of the colors of the yarn making up the heather yarn when formed into a fabric is prepared by tensioning a plurality of twist-free crimped continuous filament yarns having a different color and/or dye receptivity in order to remove intra-yarn entanglement, passing the tensioned yarns side-by-side into a jet intermingling zone at a slower withdrawal rate from said zone. The heather yarn is characterized by substantially no twist between the yarns making up the heather yarn and by yarn-to-yarn randomly intermingled filaments forming blended areas of random length of filaments along the heather yarn randomly interspersed between unblended areas of random length along the yarn. The heather yarn is incorporated into a pile fabric.
Abstract: The apparatus for obtaining a self-twisted product from at least two filamentary strands relates to spinning equipment. The apparatus includes a mechanism for continuously feeding the strands, swirl chambers having each jet passages producing air swirls of opposite directions within these chambers and thus effecting the twisting of the strands, an arrangement for supplying air alternatingly into these jet passages, a device for uniting or plying the strands issuing from the chambers and a mechanism for winding the final product. In each swirl chamber, the jet passages are displaced relative to one another longitudinally of the chamber. In adjacent swirl chambers, the jet passages producing the air swirls of the same direction are arranged to that one of them is situated at the inlet end of its respective chamber, while the other one is situated at the outlet end of its chamber. In this way clogging of the jet passages is precluded, and the strength of the final product is increased.
Type:
Grant
Filed:
July 21, 1976
Date of Patent:
October 25, 1977
Inventors:
Pavel Mikhailovich Movshovich, Gennady Konstantinovich Maximov, Viktor Pavlovich Khavkin, Lev Nikolaevich Ivanov, Natalya Borisovna Babushkina, Vladimir Konstantinovich Afanasiev, Tamara Nikolaevna Kudryavtseva, Sergei Vladimirovich Nezelenov
Abstract: A noise reduction system is disclosed for use with a draw point localizing jet which has yarn passages, a string-up slot, and conduits for admitting treating fluid thereinto. The system comprises an exhaust muffler and access slot silencing means. The exhaust muffler comprises a housing lined with removable inserts of heat resistant, metallic sound absorbing material. The exhaust muffler has a hinged door operating in conjunction with the access slot silencing means. The muffler and access slot silencing means open and close for string-up and operation. The system lowers the overall noise level of the jet by muffling the noise sources during operation.
Type:
Grant
Filed:
September 8, 1976
Date of Patent:
August 23, 1977
Assignee:
Allied Chemical Corporation
Inventors:
William Robert Weiss, James Judson Cooksey, Phillip Leroy Mullins
Abstract: A process for drawing and air-jet bulking polyester yarn which has been spin-oriented by melt-spinning at high speed. The yarn is drawn while heating it with a heater at a temperature greater than 180.degree. C and the drawn yarn is immediately air-jet textured to produce crunodal surface loops. Boil-off shrinkages of less than 3.5 percent are obtained without heating the yarn after it is drawn.
Abstract: A bulked multifilament yarn having filaments of polymeric material has alternating points of maximum polymeric density and minimum polymeric density occurring along the length of each filament with a maximum spacing of 10 meters. The yarn may have a crimped structure in which the crimps are of undulating form with more than 50% of the filaments having maximum amplitudes of undulation less than the diameter of the yarn and more than 50% of each filament lies on one side of a diametral plane of the yarn particular to that filament. A process of producing the yarn includes the steps of jet bulking yarn and projecting it against one end of an elongated package during which the pressure prevailing at said one end of the package fluctuates. The pressure varies between a maximum value and a minimum value with a frequency related to the rate of feed of the yarn.
Type:
Grant
Filed:
July 28, 1975
Date of Patent:
August 16, 1977
Assignee:
John Heathcoat & Company Limited
Inventors:
Peter William Foster, Duncan Cameron Ferrier, Thomas Berry, Karel Murenbeeld
Abstract: An insert is disclosed to reduce noise for apparatus to prevent melted yarn stopped in high temperature yarn texturing jet. The insert is a cylinder at the outlet of the orifice emitting a cooling, diluting and diverting fluid, such as air, to prevent yarn when stopped in the steam texturing jet from being melted. The insert comprises a cylinder having a series from about 5 to 10 cylindrical openings evenly distributed across the orifice and with axes parallel to the orifice axis. The cylindrical openings preferably have a length to diameter ratio of from about 5 to about 10.
Type:
Grant
Filed:
November 14, 1975
Date of Patent:
August 9, 1977
Assignee:
Allied Chemical Corporation
Inventors:
William Robert Weiss, Anthony Michael Saich, James Judson Cooksey
Abstract: The invention relates to a process for the continuous production of a stretched and interlaced polyamide-6 filament yarn wherein the filaments are interlaced before stretching.
Type:
Grant
Filed:
July 11, 1975
Date of Patent:
July 12, 1977
Assignee:
Bayer Aktiengesellschaft
Inventors:
Harry Kubitzek, Georg Hinrichsen, Wolfgang Giessler
Abstract: A muffler for use in conjunction with an interfloor tube and aspirating means during the production of multifilament, synthetic yarn is provided. Audible noise which is emitted at the exit end of the interfloor tube is reduced by up to 33.5 .DELTA.dB(A) and brought to within acceptable levels through the use of a perforated tube, resonant chambers, and sound absorbing means.
Type:
Grant
Filed:
September 21, 1976
Date of Patent:
June 21, 1977
Assignee:
Allied Chemical Corporation
Inventors:
William Robert Weiss, James Judson Cooksey, Wilbur Leon Stables, Harry Lee Newell, Jr.