Filtration Nonwovens for High Temperatures.

Hot gas filtration is an excellent phase separation process because of its long term durability to temperatures of up to 250 degrees centigrade. Filters for the removal of fly ash in flue gas emissions from coal fired boilers and waste incinerators operate in this temperature range. To withstand these temperatures, as well as corrosive ch..

Status and Development Trends in Textile Filters.

Nonwoven fabrics, particularly needled nonwovens, have use in dry and wet filtration, including the removal of particulate matter and in product recovery under a range of temperatures. High efficiency tubular bag filtes with continuous cleaning are optimal for the removal of solids, mainly in dust from exhaust air and in industrial gases...

Cleaner Air in Cars.

Major automotive manufacturers are using Freudenberg's MicronAir air filters to remove dust, soot, pollen, sportes, and other pollutants from automotive interiors. The filters, which fit in the air intake system, remove particles as small as 3 microns in diameter and maintain an optimum air throughput. Electrostatically charged microfiber..

Filters All From One Source.

P&&S Filtration is a vertically integrated compnay in the United Kingdom that manufactures wet and dry filters at facilities in the United States, Europe, India, and Australia. Woven filters are mostly used in wet filtration. Applications for monofilament filters include the separation of particles, crystals, and pulps. Multifilament filt..

Heat Protection and Filtration.

Lydall, one of the world's leading producers of filter and barrier textiles, increased its turnover in 1992 by 12 percent and its net profits by 7 percent. CEO Leonard R. Jaskol Attributes this growth to quality control and right first time production. Investment in product development in 1992 was $4.7 million. For the biomedical sector, ..

Environmental Solutions Provided by Filter Belts.

Microfilter belts, vacuum filter belts, and screen belts are used for waste treatment. Microfilter belts are characterized by strength, openness, and a fine pore size. The multilayer filter fabrics are produced on special looms that can handle several different wire systems in the warp and weft. Vacuum filter belts are ideal for washing o..

Trevira Microfilament Yarns in Environmental Technology.

Airtex ultrafing fabrics made from Trevira microfilament yarns are used to construct high performance air filters. BHSU-Spanex markets Airtex ultrafine filters as the Spanex Dust Separator SMU 1500 for the wood processing industry. L+M makes laminar compact filters for hose filtration equipment used in waste scrubbing in the chemical indu..

Use of Hollow Polysulfone Fibers in the Process of Dehydrating Acetic Acid by Evaporation Through a Membrane.

Selective evaporation through a membrance composed of hollow polysulfone fibers successfully dehydrated acetic acid. The double coagulation bath method produced polysulfone membranes with an effective selective layer thickness of 2.5 micron. The lengths and diameters of the membrane fibers influenced the permeability of the membrane. The ..

Biodegradability of Papers Reinforced with Resins.

The relationship between the composition of paper and epoxy resin composites, their biodegradability, and their reinforcement properties were examined. Preparation of the composite involved immersing sheets of paper in an epoxy resin diluted with ethanol, followed by pressing and crosslinking at 120 degrees centigrade for 20 minutes. The ..

Development of Liquid Crystalline Polyester Composite as Recyclable High Strength Material.

The preparation of recyclable, high strength polymer composites reinforced with liquid crystalline polyester required the use of a twin screw extruder. The liquid crystalline polyester formed dispersed microfibrils that reinforced the matrix polymers with unique liquid crystalling polyester content. A liquid crystalline polyester and poly..