Studies on Filament Migration in Air-jet Textured Yarns and the Relationship between Migration Parameters and Properties.

Researchers used a tracer fiber technique to characterize the structure and migration parameters of polyester (dry and wet textured), nylon (wet textured), and polypropylene (wet textured) air jet textured yarns. Measurements included bulk, loop size, instability, loop frequency, tenacity, breaking elongation, and initial modulus for air ..

Aramid Fibers and New Adhesion Systems to Elastomers: Application and Performance.

New developments in the manufacture of aramid fibers for transmission belts include yarn activation systems and dop systems that ensure balanced property profiles. Para-aramid yarns have few amorphous regions and correspondingly low shrinkage and creep ra

Yarn Conditioning: The Quality Story

The Contexxor yarn steaming system manufactured by Xorella of Switzerland provides fully saturated steaming for uniform penetration throughout the yarn package at temepratures from 50-140 degrees centigrade. The system eliminates shock treatment; improves energy recovery through indirect steaming; and provides a constant treatment tempera..

Manufacturing Technology of Composite Yarns with Polyester/Polyester and Polyester/Staple for Garment.

Researchers used interlacing, air jet nozzles, and texturing machines to study the technology of manufacturing polyester blended yarns. They analyzed yarn physical properties and various processing conditions for interlaced and airjet textured yarns. Various physical properties (shrinkage and stress) and mechanical properties were analyze..

Blending of P/V

Polyester/viscose blend fabrics outperform polyester/cotton blend fabrics in some application because viscose fibers have the advantages of high moisture absorbency (11.5-16.6 percent), low static charge, dust-free processing, low waste levels, a wide range of available staple fiber lengths and fineness, controllable luster, easier wet pr..

Dry-Spun Flax and Cotton Blend Textiles.

An experiment examined the attributes and spinnability of blends of cotton and flax fibers. Researchers obtained flax fibers via chemical, enzymatic, and conventional methods, treating several lots mechanically to shorten the fibers for processing on cotton machinery. Spinning trials produced a series of medium count, apparel grade yarns ..

Best Practices in PET Recycling

Best practices in the plastic recycling industry improve polyethylene terephthalate (PET) processability, productivity, and efficiency. Benefits include improving market competitiveness, achieving economic efficiency, meeting feedstock requirements, and enchancing product performance. The Clean Washington Center (CWC) is developing a manu..

PET Recycling -- The View from NAPCOR.

The rapid growth in membership in the National Association for Plastic Container Recovery (NAPCOR) is an indicator of industry support for polyethylene terephthalate (PET) recycling. A temporary increase in virgin PET in 1996 led to price decreases for recycled PET (RPET). The market recovered in early 1997, and 18 recycling plants existe..

How Variety and Weather Determine Yarn Properties and Dye Uptake.

Researchers identified the significant effects of growth environment and genotype on fiber, yarn, and dye uptake properties of four upland genotypes and characterized the role of temperature in determining those properties. Field trials showed that growth

Production of High Quality Tyre Cord -- The Modern Way.

High performance automobile tires require high quality manmade cord reinforcement to withstand heavy loads and repeated deformation. typical tire construction includes a carcass, breaker, tread, side walls, and bead. The carcass consists of 4-24 layers of cord fabric. Rubberized cord fabric uses twisted cord yarns (viscose, nylon, or poly..