Abstract: A sewing thread made of synthetic fibers having an elongation at a break between 25% and 85% and an elastic tensile elongation of between 30% and 95% of the elongation, determined by a measuring strength, corresponding to 70% of the absolute strength of the respective sewing thread.

Abstract: A sewing thread made of synthetic fibers is described, whereby the ready-to-use sewing thread has an elongation at break between 25% and 85% and an elastic tensile elongation of between 30% and 95% of the elongation, determined by a measuring strength, corresponding to 70% of the absolute strength of the respective sewing thread. In addition, two methods for making a sewing thread are also described, whereby the sewing thread comprises either a plied yarn or an air-intermingled sewing thread. To produce this sewing thread yarn components with an elongation at break between 25% and 85% and an elastic tensile elongation of between 30% and 95% are selected, whereby thermal and preferably hydrothermal treatment is carried out after the actual yarn production.

Abstract: A sewing thread made of synthetic fibers is described, whereby the ready-to-use sewing thread has an elongation at break between 25% and 85% and an elastic tensile elongation of between 30% and 95% of the elongation, determined by a measuring strength, corresponding to 70% of the absolute strength of the respective sewing thread. In addition, two methods for making a sewing thread are also described, whereby the sewing thread comprises either a plied yarn or an air-intermingled sewing thread. To produce this sewing thread yarn components with an elongation at break between 25% and 85% and an elastic tensile elongation of between 30% and 95% are selected, whereby thermal and preferably hydrothermal treatment is carried out after the actual yarn production.

Abstract: A sewing thread made of synthetic fibers is described, whereby the ready-to-use sewing thread has an elongation at break between 25% and 85% and an elastic tensile elongation of between 30% and 95% of the elongation, determined by a measuring strength, corresponding to 70% of the absolute strength of the respective sewing thread. In addition, two methods for making a sewing thread are also described, whereby the sewing thread comprises either a plied yarn or an air-intermingled sewing thread.

Abstract: A sewing yarn comprises at least two roving yarns, which are twisted together with one another, whereby each roving yarn has the structure of a core yarn, comprising at least one first multifilament yarn component, forming a yarn core, and a second fiber yarn component spun over the core. In the cross-section of the sewing yarn, the fiber yarn thread covering of at least one roving yarn contains less than 41 individual fibers. For the manufacture of each roving yarn, a slubbing made of fiber yarns is compacted to 10 to 25 times of the volume of the roving yarns, introduced into a spinning device with the multifilament yarn component serving as the core, and is spun in said device, with at least two roving yarns being thereafter twisted together with one another.

Abstract: A sewing yarn is described, with at least two roving yams, which are twisted together with one another for the formation of the sewing yarn, whereby each roving yarn has the structure of a core yarn, comprising at least one first multifilament yarn component, forming a yarn core, and a second fiber yarn component spun over the core. In the cross-section of the sewing yarn, the fiber yarn thread covering of at least one roving yarn contains less than 41 individual fibers.

Abstract: A sewing yarn is described, with at least two roving. yarns, which are twisted together with one another for the formation of the sewing yarn, whereby each roving yarn has the structure of a core yarn, comprising at least one first multifilament yarn component, forming a yarn core, and a second fiber yarn component spun over the core. In the cross-section of the sewing yarn, the spun fiber yarn covering of at least one roving yarn contains less than 41 individual fibers.

Abstract: A yarn, especially a sewing yarn, comprises at least two multifile yarn components. The first yarn component forms mainly the core of the yarn and the second yarn component forms mainly the jacket of the yarn. The two yarn components are intermingled with one another. The monofilaments of the second yarn component have a specific strength which amounts to between 5% and 70%, especially between 10% and 50%, of the specific strength of the monofilaments of the first yarn component.

Abstract: A method is described of drawing a pre-oriented multifilament yarn (POY yarn). Hereby the multifilament yarn is fed from a delivery godet, around which it is wrapped, at a first velocity into a main drawing zone and removed from the main drawing zone at a second velocity by a drawing-off godet around which it is wrapped. The drawing in the main drawing zone takes place between the delivery godet and the drawing-off godet whereby the drawing-off godet is heated to a temperature of between 160.degree. C. and 240.degree. C. The first and the second velocities are so adjusted with respect to each other that the second velocity is 70% to 180% greater than the first velocity.

Abstract: A thread, suitable for use as a sewing thread, and having increased tenacity and reduced thermal shrinkage properties. A multi-filament core yarn for the thread is formed from a preoriented yarn having a titre of 100 dtex-1,000 dtex which has been turned around an unheated pin of less than 10 mm diameter, heated to a temperature of 100.degree.-200.degree. C. for 0.01-10 seconds, and drawn with a drawing ratio equal to or greater than a normal drawing ratio. At least one effect yarn is intermingled with the core yarn to form a core-jacket thread having loops, not more than 15% of which are drawn tight in a knot-like manner.

Abstract: In a method and apparatus for producing a yarn, a synthetic pre-oriented multifilament yarn is fed at a first velocity to a non-heated pin having a diameter less than 10 mm. After turning the yarn around the pin for an angle between 270.degree. and 360.degree., the yarn is heated to a temperature between 100.degree. C. and 250.degree. C. for between 0.01 sec and 10 sec. The yarn is then drawn off the pin at a second viscosity higher than the first velocity.