Abstract: A high efficiency particulate air (HEPA) filter made from a layer of electrostatically-charged thermoplastic fiber scrim that is point-bonded to a layer of glass fiber batting to form a composite layer defining an area, wherein the point-bonding is distributed over substantially all of the area of the composite layer and the bond points constitute approximately 1% to approximately 6% of the total surface area of the welded filter material, and wherein the composite layer is substantially uncompressed.

Abstract: A pleatable high efficiency non-woven, gas filtration media is provided. The media has an electrically charged air laid fibrous layer with a thickness between about 2 and about 35 mils, and a wet laid fibrous layer having a thickness of between about 5 and about 35 mils. The combined layers have, (a) a thickness of between about 10 and about 50 mils, (b) a stiffness of between about 200 and about 3500 mgs, (c) a Frazier of between about 10 and about 400 CFM, and (d) an &agr; of at least 15.

Abstract: A method of insulating a member, such as a cryogenic tank, pipe, or other cryogenic or extreme temperature element with multilayer insulation, and a packaged multilayer insulation blanket for use in the method. The packaged blanket includes (1) a multilayer insulation blanket including a plurality of alternating layers of aluminum or other heat-reflective foil and microfiberglass insulation spacer material, and (2) two layers of plastic sheeting sandwiching the multilayer insulation blanket therebetween. Each layer of plastic sheeting has at least one edge which is sealed to thus define an evacuated inside space containing the multilayer insulation. In the method, the edge of the packaged insulation is opened and an edge of the multilayer insulation blanket therein is attached to the cryogenic tank, container or other member to be insulated. The multilayer insulation is then guided onto or around the member, and out from between the plastic sheeting until edges of the multilayer insulation abut.

Abstract: A fire-resistant core for use in a combustible fire-rated building panel (1), such as a fire door, has a wood product-containing solid structural member (20) with a density of between about 30 and 60 lbs. per cubic foot and a thickness between about {fraction (1/16)} inch and two inches. At least one layer of fire-resistant composite (21) is attached to at least a lateral surface (22) of the structural member (20). The composite has an inorganic, non-woven fibrous web (25) with a thickness of from about 5 to 50 mils. A web binder is substantially uniformly dispersed throughout the web (25). A substantially continuous coating (27) is on at least a lateral surface (28) of the web (25). The coating is of particulate vermiculite (29) and has a thickness of from about 0.5 to 10 mils and the add-ons of the vermiculite to the web are from about 10% to 50%.

Abstract: A method for making and a thermal, acoustical and/or vibrational shield (1) which has an upper metal foil (2), a lower metal foil (3), and a thermal, acoustical and/or vibrational abatement insulation (4) disposed between the upper foil (2) and the lower foil (3). An upper periphery (5) of the upper foil (2) and a lower periphery (6) of the lower foil (3) are in vertical juxtaposition and totally enclose the insulation. At least one punched section (7) seals the upper periphery (5) to the lower periphery (6). The punched section (7) has a portion of the upper periphery (5) in an upper S-shaped configuration at each side of punched section (7) with upper laterally-extending walls (31), a portion of the lower periphery (6) in a lower S-shaped configuration at each side of punched section (7) with lower laterally-extending walls (33), and a horizontal upper wall (33) and a horizontal lower wall (34) extending, respectively, from the upper S-shaped configurations and the lower S-shaped configurations.

Abstract: A flexible, adhesively attachable, self-sealing, thermal and acoustical insulating shield has a needled, flexible, fibrous batt having an insulating layer of insulating fibers disposed between opposite binding layers of binding fibers. Binding fibers of each binding layer are needledly disposed through the insulating layer and an opposite binding layer to provide tufts of binding fibers protruding from the opposite binding layer so a to form a tufted upper surface and a tufted lower surface of the batt. A flexible adhesive is disposed and adhered substantially over the upper surface and, preferably, over lower surface of the batt such that the tufts on the upper and lower surfaces are secured to the surfaces by the adhesive. A flexible, protective foil is adjacent to, and preferably permanently adhered by the adhesive to, the lower surface of the batt.

Abstract: A needled composite acoustical barrier is provided. The barrier has a non-woven first layer (13) of needleable textile first fibers (13a); the layer (13) has a thickness of between about 0.01 inch and 0.5 inch and a density of between about 1.0 and 10 lbs. per cubic foot. A non-woven, low density second layer (15) of textile second fibers (15a) is provided; the second layer (15) has a thickness of between about 0.2 inch and 5 inches and a density of between about 0.1 and 4.0 lbs. per cubic foot. A high-density intermediate acoustical barrier layer (14) is disposed between the first and second layers (13, 15); the intermediate barrier layer (14) has a thickness of between about 0.01 inch and 0.5 inch, a density of at least 50 lbs. per cubic foot, and the barrier layer has a substantially continuous film of high-density needleable polymeric material.

Abstract: A flexible, adhesively attachable, thermal and acoustical insulating shield has a needled, flexible, fibrous batt (40) having an insulating layer (43) of insulating fibers (44) disposed between opposite binding layers (41, 42) of binding fibers (45). Binding fibers (45) of each binding layer (41, 42) are needledly disposed through the insulating layer (43) and an opposite binding layer (41, 42) to provide tufts (46) of binding fibers (45) protruding from the opposite binding layer (41, 42) so as to form a tufted upper surface (47) and a tufted lower surface (48) of the batt (40). A flexible adhesive (50) is disposed and adhered substantially over the upper surface (47) and lower surface (48) of the batt (40) such that the tufts (46) on the upper and lower surfaces (47, 48) are secured to the surfaces by the adhesive. A flexible, protective foil (51) is permanently adhered by the adhesive (50) to the lower surface (48) of the batt.

Abstract: The sealed shielding unit comprises a unit made of multiple layers. The layers include a top surface and a bottom surface of a material such as metal, plastic or composite or the like and a middle portion of air or insulation product. The top and bottom layer and insulation are cut into designated shapes and then positioned into the predetermined positions and then pressed into a pan shape with edges having a small upper horizontal end portion. The upper horizontal end portion is folded over and then the edges are bent inward and flattened into a moisture sealed unit.

Abstract: An improvement of the conventional method of wrapping cryogenic insulation around an inner tank disposable within an outer tank of a cryogenic tank system, where cryogenic insulation paper is unrolled from a roll thereof, wrapping the paper in serially disposed wraps around the inner tank, unrolling cryogenic insulating metal foil from a roll thereof and wrapping the foil in serially disposed wraps onto respective serial wraps of the paper. In the improvement there is provided at least one combined roll of cryogenic insulation having alternating combined layers of the paper of a defined first width and foil of a defined second width wherein the defined second width is less than the defined first width and the foil is centered on the paper so as to provide edge portions at each edge of the paper which are not contacted by the foil. Lengths of combined layers are unrolled from the combined roll, and the lengths of combined layers are serially wrapped around the inner tank.

Abstract: A generally elongated, thin, metal sheet heat insulator (1) having at least two generally elongated, thin, metal sheets (3, 4, 5, 6 and 7) disposed generally one above the other in a spaced apart relationship and a metal separator (2) therebetween contacting both sheets for maintaining the spaced apart relationship. The improvement of the invention has distinct, non-woven, substantially open, metal separators (2) having a substantial Z-direction dimension (27) and have substantially parallel upper and lower contact surfaces (27, 29) spaced apart in the Z-direction (27) with a contact surface area of each contact surface less than about 30% of a planar area (48) of the separator parallel to the X and Y-dimensions of the separator.

Abstract: A method of wrapping cryogenic insulation around an inner tank disposable within an outer tank of a cryogenic tank system, where cryogenic insulation paper is unrolled from a roll thereof, wrapping the paper in serially disposed wraps around the inner tank, unrolling cryogenic insulating metal foil from a roll thereof and wrapping the foil in serially disposed wraps onto respective serial wraps of the paper. In the method there is utilized at least one combined roll of cryogenic insulation having alternating combined layers of the paper of a defined first width and foil of a defined second width wherein the defined second width is less than the defined first width and the foil is centered on the paper so as to provide edge portions at each edge of the paper which are not contacted by the foil. Lengths of combined layers are unrolled from the combined roll, and the lengths of combined layers are serially wrapped around the inner tank.

Abstract: A filter material for removing chlorine from cold water used in preparing a human-consumable beverage having at least one layer of a mat of laid fibers of cellulosic fibers and synthetic textile fibers and mixtures thereof. A synthetic hydrophilic, food-grade latex binder deposited onto the fibers within the mat in an amount sufficient to so bind the fibers together within the mat that during a filtration of cold water through the mat no substantial amount of fibers are displaced therefrom and in an amount insufficient to substantially reduce a gravity flow rate of cold water through the mat to less than about 0.3 liter per minute per 100 square centimeters of the mat. A water-insoluble chlorine adsorbent or absorbent solid powder disposed on the binder such that no more than 65% of the total outside surface area of the powder is substantially contacted by the binder.

Abstract: About 0.01% to 10% of an antifoam silicone oil having a predetermined viscosity of at least about 100 cp is dispersed in an aqueous solution of a water-soluble gum having a viscosity within about 20% of the predetermined viscosity of the silicone oil. A substrate is contacted with the dispersion so as to form a dispersion-wetted substrate and at least a part of the aqueous solution is removed from the substrate, wherein the silicone oil remains in the substrate.

Abstract: A filter material for filtering leucocytes from a fraction of or whole human blood, comprises a web having a thickness of at least about 1 millimeter and a bulk density of about 0.05 to 0.4 g/cm.sup.3. The web has a plurality of interlocked matrix fibers distributed in the web to form a matrix thereof with spaces between adjacent interstices of interlocked fibers. The matrix fibers are composed mainly of about 1 to 3 micron diameter glass fibers, i.e. at least 75% of the weight of the web being the glass fibers. A plurality of fibrillated particles of textile fiber material, having a surface area of between 5 and 100 square meters per gram are disposed within the spaces of the matrix. The weight ratio of the fibrillated particles to the matrix fibers is between about 1:99 and 40:60. A thermoplastic binder is disposed at least at cross-over portions of the matrix fibers, with the amount of the binder being about 0.1% to 10% by weight of the web.

Abstract: A generally elongated, thin, metal sheet heat insulator (1) having at least two generally elongated, thin, metal sheets (3, 4, 5, 6 and 7) disposed generally one above the other in a spaced apart relationship and a metal separator (2) therebetween contacting both sheets for maintaining the spaced apart relationship. The improvement of the invention has distinct, non-woven, substantially open, metal separators (2) having a substantial Z-direction dimension (27) and have substantially parallel upper and lower contact surfaces (27, 29) spaced apart in the Z-direction (27) with a contact surface area of each contact surface less than about 30% of a planar area (48) of the separator parallel to the X and Y-dimensions of the separator.

Abstract: A rigid fiberboard suitable as a replacement for the natural woods presently used for the manufacture of pencils is provided. The fiberboard essentially comprises a fiber network, together with a filler and binder. A lubricant is added to improve the sharpening characteristics of the fiberboard, and dimensional stability is preserved by incorporating a waterproofing agent to minimize the absorption of water by the fiber network.

Abstract: A filter material for filtering leucocytes from a fraction of or whole human blood, comprises a textile web having a thickness of between about 2 millimeters to about 12 millimeters and a bulk density of about 0.05 to 0.4 g/cm.sup.3. The web has a plurality of interlocked textile fibers with average deniers between about 0.05 and 0.75 and average lengths between about 3 millimeters and 15 millimeters. The textile fibers are distributed in the web to form a matrix thereof with spaces between adjacent interstices of interlocked fibers. A plurality of fibrillated particles of textile fiber material, having a surface area of between 5 and 100 square meters per gram are disposed within the spaces of the matrix. The weight ratio of the fibrillated particles to the textile fibers is between about 1:99 and 40:60. A plurality of glass fibers, having an average diameter of between 0.1 and 5 microns and being about 2% to 85% of the web, also form part of the matrix.

Abstract: A protective and at least in part heat-insulating cover for a battery, especially an automobile battery disposed in an automobile, having a pleasing appearance, and having a molded, rigid plastic support with at least a top wall and side walls, which walls are sufficiently rigid so as to be self supporting. Heat insulation is disposed on at least a portion of at least one wall and an envelope of plastic material encloses the insulation. Attachments attach the envelope to at least a portion of at least one wall.

Abstract: A low fiber, high filler content matrix board is provided. The matrix board is characterized by a total mold shrinkage of not more than 0.002 "/", wherein the shrinkage is substantially non-directional. In addition to the fibers and fillers, the board further comprises a resin binder. A matrix mold made from the board is provided together with a method for forming a flexographic printing plate from such a matrix mold and a printing plate made according to this method.