Dutting and bonding of nonwoven with ultrasonlcs (German)

More and more converters of nonwovens and composite materials use ultrasonics. This technology allows high energy speeds, reduces the consumption of energy and eliminates consumables. Ultrasonics also allows material combinations, which so far only have been possible with glue. The main users of this technology are manufacturers of filter..

Resorbable textiles for medical application

Resorbable polymers offer the possibility to produce implants which must not be explanted in a second operation after successful healing. Further, new transplants can be designed in vitro of the patients own cells; during the cultivation they need the synthetic scaffold as a surface for the cell seeding which gives the structural shape fo..

Microfibers: raw materials for technical textiles (German)

Microfibres are used in technical field of technical textiles particularly in the sector of filtration and nonwovens. This article is limited to orogenic fibres only and its intention is to give searchers and technicians an idea as to which microfibres are appropriate for use as types of technical textiles. Microfibres are defined as fibr..

Evolution of Nonwoven Products: Development, Acceptance, Usage.

Commerical nonwoven fabric manufacture began shortly after World War II when the Kendall Company began calendering webs of cotton and thermoplastic fibers that bonded the cotton to form a sheet for use in the manufcture of tea bags. Chicopee printed adhesives onto cotton batts, which were then saturated or dried to make filters, dental to..

Nonwoven Fabrics, Spunbonded.

Unlike other nonwoven fabrics, spun bonded fabrics require a one step manufacturing process to achieve complete chemical to fabric or polymer to fabric production. Worldwide production of spun bonded fabrics reached 307,000 metric tons in 1990. Production increases at an annual rate of 6-8 percent. The manufacturing process integrates spi..

Wet-Laid Nonwovens.

Natural fibers used during wet laid nonwoven fabric manufacture include wood pulp, abaca, hemp, cotton, and sisal. Wood pulp features easy web forming and low raw material costs. Abaca and hemp are used for stencil tissue, meat packaging, tea bags, medical tape, and vacuum cleaner bags. Cotton wet laid nonwoven fabric end uses include abs..

Nonwoven Applications of Natural Fibers.

A review of nonwoven fabrics manufactured from natural fibers covers fiber treatment and applications. A critical advance in fiber treatment has been the development of a genetically modified flax that enables bark removal without damage to the fiber. This modification significantly extends flax fiber applications. These applications incl..

Cotton in Nonwovens Applications.

The United States cotton nearby futures price decreased to 64.72 cents per pound as of May 5, 1998. Mill consumption slightly increased to 11.5 million bales for the 1997-1998 season. The United States produced an estimated 18.8 million bales of cotton in 1997-1998. Growers planted fewer acres of cotton, in part due to the decreases in co..

Preparing Cotton, Web Forming and Bonding Methods for Cotton Nonwovens

In 1997, nonwoven products consumed approximately 80 million pounds of bleached cotton. Primary markets included absorbent products, personal hygiene products, home products, and medical textiles. An introduction to nonwoven cotton fabrics addresses ginning; the physical properties of cotton fibers, including micronaire, length, and stren..

Effect of Soil Burial on Biodegradation of Selected Nonwovens.

Researchers studied the biodegradability of nonwoven fabrics buried in soil. They buried six nonwoven fabrics for periods ranging from 2-64 weeks in two soils with differing pH levels and evaluated the samples based on tensile strength, elongation properties, colorimetric analyses, and polarized light microscopy. The fabrics included recy..