Sewing thread properties

Thread properties required for good sewing and seam performance include high tensile strength with moderate to low elongation, low stretch relaxation of the thread after sewing, optimal fibre finish to assure lubricity and evaporation, stability at high temperatures, and high resistance to abrasion. Ways of maximizing these properties are..

A multi-axial yarn structure

In a method of and machine for forming a nonwoven bias yarn assembly comprising two superposed nonwoven bias yarn sub-assemblies, each yarn is transferred by a yarn transfer member from an opening in a yarn guide member to another opening in the yarn guide member in such a way that each yarn is caused, in a succession of forward transfer ..

New Positive Yarn Feeder.

Memminger's model MPF-K positive yarn feeder has a new vibration brake on the inlet side. The brake has magnetic brake rings that vibrate when the feeder is switched on, providing an continual rotary motion. THe motion of the yarns drive the brake rings. The yarns run in the opposite direction of the brake rings, which ensures that the ya..

Brainard-Kilman LG-200 Portable Tensiometer.

The LG-200 Portable Tensiometer tests shear, peel, and tensile strengths of fabrics, as well as the puncture resistance of geosynthetics, geotextiles, fgabrics, plastics, ans rubber sheeting. Its interchangeable grips make it particularly useful for liner installers. It accommodates a variety of test specifications with different material..

Influence of Fiber and Yarn Properties on Knitted Cotton Fabrics.

Researchers investigated the effects of cotton fiber and Yarn properties on knit fabrics. Eighteen cotton carieteis belonging to different species and hybrids were spun to a 20/1 yarn count on a ring spinning machine and the yarns were knit into signle jersey fabrics. Standard methods tested fiber, yarn, and and fabric properties. The dat..

Sewing thread Production

Schaerer Schweiter Mettler (SSM) manufactures assembly winding, finish application, singeing, and finish winding machines for sweing thread manufactruers. For random assembly winding, the company offers the SSM Combiwinder FMX with tow to four ply horizontal creeling or two ply vertical creeling. The Digicone assembly winder enables the e..

Method to manufacture a slub yarn

The method comprises feeding a first yarn at a first rate to an air-texturing jet and simultaneously feeding a second yarn at a second rate to the air-texturing jet to form a composite yarn. The composite yarn is withdrawn from the air texturing jet at a third rate which is lower than the first two rates whilst periodically reducing the s..

Trash content of carded andcombed ring and rotor yarns

Combing reduces the trash content of combed slivers by about 60％. Fewer yarn breaks subsequently occur because there is less trash in further processing stages. Additional experiments could discover the lowest degree of combing required to achieve sufficient trash elimination. Due to the additional cleaning effect of the opening roller, ..

On yarn count and twist level of throstle-spun yarn

In this report the main factors determining the linear density and the twist level of throstle-spun yarn are analysed and discussed. It is found that the twist level and the linear density of throstle-spun yarn depends on the efficiency of rotation of the stuffer tube and the inherent constant of the raw material, respectively. It is also..

TENSILE FATIGUE BEHAVIOR OF STAPLE YARNS.

An Investigation studied the tensile fatigue behavior of warp yarns as they were cyclically elongated and subjected to abrasion. A Sulzer Rueti Webtester simulated typical stresses that yarns undergo during weaving. Samples were 20 tex 50/50 cotton/polyester ring and open end spun yarns. Evaluations depended on three criteria: failure, da..