Abstract: A non-woven fabric in which large fiber bundles of the fabric intersect one another, small fiber bundles thereof intersect one another among said large fiber bundles, and the fibers of the fiber bundles are being entangled with one another among the large fiber bundles, among the small fiber bundles and at the intersecting points of the fiber bundles, may be manufactured by fluid-entangling fiber webs on a support member having large pores to obtain said large fiber bundles therein; and further fluid-entangling fiber webs of the resultant intermediate on a support member having small pores from either the same direction or the opposite direction to form said small fiber bundles therein. The non-woven fabric has excellent draping property, covering property and abrasion resistance and can be used as an interlining, as a base material for synthetic leathers, as a variety of base materials, as an interior material, as a simple garment, as a medical gown, etc.

Abstract: A nonwoven fabric of entangled fibers defining a predetermined pattern of openings with the fabric having excellent draping characteristics.

Abstract: A vertical microelectronic field emitter is formed by first forming tips on the face of a substrate and then forming trenches in the substrate around the tips to form columns in the substrate, with the tips lying on top of the columns. The trenches are filled with a dielectric and a conductor layer is formed on the dielectric. Alternatively, trenches may be formed in the face of the substrate with the trenches defining columns in the substrate. Then, tips are formed on top of the columns. The trenches are filled with dielectric and the conductor layer is formed on the dielectric to form the extraction electrodes.

Abstract: Towel, sponge and gauze products composed of fibers of polyvinyl alcohol resin. The fibers are selectively soluble in aqueous solutions only above approximately 93.degree. C. Polyvinyl alcohol fibers have a degree of hydrolysis of at least 99%, are composed of no more than 1/2% sodium acetate, 1/10% methyl alcohol and an average degree of polymerization between approximately 1300 to 1500. The polyvinyl alcohol fibers being produced by a process of dope extrusion.

Abstract: A geosynthetic barrier adapted to deny wildlife access to contaminated seents (CS), includes a geocomposite (10) formed of a top layer (14) juxtaposed on a bottom layer (12) which is adapted to be placed on the sediments. The top layer includes a geosynthetic drainage matrix having a plurality of openings, and the bottom layer includes a geotextile having a plurality of openings (12H) formed so as to allow gases to escape from the contaminated sediments on which said geocomposite is placed. The openings in the bottom layer of the geosynthetic barrier have a size in the range up to 200 cm and are spaced apart on centers having a range of between 6 cm to 600 cm, for example. The geosynthetic drainage matrix may be a geonet, a geogrid or a geomesh, fabricated from polyethylene, polypropylene, high density polyethylene, low density polyethylene, polystyrene, or high impact polystyrene.