Abstract: Described are smooth, glossy finished fiber reinforced thermoplastic prepreg materials composed of reinforcement fibers impregnated with and surrounded by thermoplastic. Prior to consolidation, the material preferably consists of thermoplastic fibers and reinforcing fibers, intimately blended together. When heated, with the aid of pressure, the thermoplastic fibers melt, surround and impregnate the reinforcing fibers and provide a smooth, glossy finish to the reinforced article. Excellent surface appearance and the ability to accommodate high-speed processing characterize the prepreg materials of this invention.

Abstract: Fiber reinforced thermoplastic molded products, sheets, and the like, having a glossy surface are produced by intimately blending discrete reinforcing fibers (e.g. fiberglass) and thermoplastic fibers (e.g. polypropylene or polycarbonate) into a web. The web is heated to the melting point of the thermoplastic fibers while applying pressure, to eliminate air and press the web into a consolidated structure. Breakage of the reinforcing fibers is minimized by limiting the thickness of the web and limiting the pressure so as to produce a consolidated structure with minimal fiber breakage and a Notched Izod of at least one. Layering consolidated structures, some without reinforcing fibers, may be heated and pressed together to form a final structure having a thickness greater than the individual structures. The great majority of the fibers are provided so that the fibers of each type are within the range of about 0.5-5 inches.

Abstract: A composite expanded web for making a cigarette wrapper is provided, the web comprising a laminate of a first web of generally flat sheet material and a second web of expanded sheet material. The expanded web is formed by passing a web of sheet material through rotary shearing and forming dies to impart to the web a configuration having longitudinally disposed rows of generally sinusoidal convolutions extending above and below the original plane of the web, each row of convolutions lying 180.degree. out of phase from its abutting rows. The composite web is formed into a wrapper for a smoking article by curling it about its longitudinal axis, securing the overlapping edges of the first web with a glue seam, and cutting it to the desired length.

Abstract: This invention relates to a novel laminated paperboard and, more particularly, to a novel laminated paperboard with a center ply having alternating grooves and ridges, which has characteristics of strength and rigidity equivalent to solid laminated paperboard, but is 30% to 45% lighter in weight.

Abstract: The ceramic packing is cast in one piece and comprises parallel corrugated layers which extend substantially transversely to the longitudinal direction of the packing with at least two joins provided between the adjacent layers.

Abstract: The packing belongs to the orderly arranged type and comprises packing units with sheets attached to each other. Each sheet consists of periodically repetitive formations of folded plates (13, 14) and the shape of the formations can be defined by the form of the upper and lower intersection line (profile) of the plates with upper and lower planes defined by the repective sides (1, 10) of the sheets. This form is symmetrical and it is similar to the letter "W" and has uneven arms (3, 2 or 4, 5), and the intersection line of a formation with the first of these planes is congruent with the intersection of the same formation with the other plane but these intersection lines are laterally offset with respect to each other by a half period.

Abstract: Foraminous plates formed from coiled or parallel tape lengths may be inserted between the tubesheet and a ported casing-end in a hollow-fiber type permeator, to convey effluent from the fiber lumens to the port and to support the tubesheet against the pressure differential between its inner and outer faces. The face of the support plate which the tubesheet will bear against is defined by edges of the tapes, which are held radially or laterally apart by spacing means adapted to permit effluent flow through the plate between the tapes. Either the casing-end or the plate surface bearing against it is grooved.

Abstract: Bubble-type flexible cushioning and packaging sheets are formed using films which are composites of single extrusion or multiple extrusion polyethylene films having density, molecular weight and, optionally, additives selected to provide a desired combination of qualities including heat sealability and low gas/vapor transmission. A preferred film material has a cross-sectional profile consisting of an inner region of linear low density polyethylene material surrounded by outer regions of high molecular weight medium density polyethylene material. The material permits the formation of preferred, square bubble configurations using a process which involves sealing two such films along generally parallel longitudinal lines; inflating the films between the longitudinal sealing lines; then sealing the films along transverse lines to form inflated rectangular pockets or bubbles therebetween.

Abstract: The stretchable composite comprises a liquid-pervious layer, liquid-impervious layer, an absorbent layer, and a stretchable layer. The stretchable layer is stretch-bonded to the other layers and, upon relaxing the stretched layer, a plurality of rugosities are formed in the liquid-pervious layer, liquid-impervious layer, and absorbent layer. A method is provided for making the composite.

Abstract: A refractory heat-insulating graphite sheet material characterized in that the material comprises a graphite sheet.

Abstract: An automotive headliner comprised of a laminate of double corrugated paperboard. Perforations in all the sheets of the laminate except the back paperboard sheet improve the acoustical performance of the liner. A vapor barrier on the back sheet prevents entry of moisture into the laminate from the roof, and a layer of sound dampening material on the front face of the laminate improves the sound absorption of the laminate. The front corrugation is larger than the back corrugation. When molding the laminate it is first moisturized, then heat molded. Heat is applied until the laminate has regained its rigidity.

Abstract: An air filter unit of the HEPA type having a filter core of zig-zag folded media enclosed by a four-sided frame having two side casings and two end casings. Each end casing includes a recess extending into the inwardly facing surface thereof and bounded on all four sides by marginal edge portions of the end casing. The end flaps of the folded media are adhesively secured to the inwardly facing surfaces of the side casings and the recesses in the end casings are filled with an adhesive initially in a flowable state and hardenable to a solid state. The zig-zag edges of the folded media are disposed entirely within the adhesive, as are tenons extending from the ends of the side casings, thereby forming a mortise type joint between the side and end casings. A plurality of channels, preferably of dove tail cross section, extend across and communicate with the recesses in the end casings.

Abstract: A foam composite - especially useful as an insulating board - comprising first and second oppositely disposed corrugated skins having a core of foam material therebetween, and a reinforcement medium located at the interface between the foam core and each skin, the foam extending through interstices or pores in the medium and bonding to the medium and to the skins. The reinforced composite so formed has increased resistance to bending and other deformations and improved dimensional stability.

Abstract: The invention relates to a humidity exchanger element comprising of a matrix formed by laminating single-faced corrugated sheets and an active silica-alumina aerogel just synthesized and adhered on said sheets and on the gap between the fibers of said sheets; the main constituents of said sheet being an inorganic fiber selected from the group consisting of ceramic fiber, glass fiber, slag fiber, carbon fiber and mixtures of them, the thickness of said sheet being in the range of 0.18-0.25 mm, the wave length of said corrugated sheet being in the range of 2.5-4.2 mm, and the wave height of said corrugated sheet being in the range of 1.5-2.3 mm; and the composition of said aerogel being 97-85% of silicon dioxide and 3-15% of aluminum oxide.

Abstract: A foam composite--especially useful as an insulating board--comprising first and second opposed corrugated skins having corrugations with inwardly facing apices, one or each of the skins being provided with a mat of porous or apertured reinforcement material extending across the apices of the corrugations and the foam extending through the pores or apertures of each mat to fill the spaces defined by the inwardly facing surfaces of the corrugations and embed the reinforcement material within the cured foam. As an alternative to a continuous mat, there may be used a plurality of strips of rigid porous or nonporous reinforcement material, spaced apart and extending across the apices of the corrugations, the foam extending through the gaps between the strips to fill the spaces defined by the inwardly facing surfaces of the corrugations and embed the strips of reinforcement material within the foam. The mat or strips reinforce the skin and resist dimensional change due to shrinkage of the foam core during storage.

Abstract: A backup board for use when drilling through a circuit board having a conductive layer therein, the backup board comprises a lamination of outer planar sheets, and an inner core of a double wall corrugated material, the outer sheets being impregnated with a thermosetting adhesive, the sheets and the core being subjected to heat and pressure to form a laminate where said corrugations fold over and bond to said outer planar sheets, to provide a backup board giving surface support by said outer sheets with a less rigid core therebetween.

Abstract: A spherical packing element for biological film processes which is formed of a flat circular base plate having a central, throughgoing opening therein, a flat and imperforate disk reinforcing plate extending along the opening and lying in a plane perpendicular to the base plate and a plurality of spaced apart, imperforate and mutually parallel circular lamellae perpendicular to both plates, traversing the opening, and spaced apart in the direction of the diameter. The packing element has a surface area of at least 250 m.sup.2 /m.sup.3, and wall thickness of the plates and lamellae are 0.1-2 mm.

Abstract: The medium and liners of a water resistant containerboard are each essentially completely impregnated by a liquid water resistant agent which also uniformly coats the surfaces of the medium and liners with a layer sufficiently thick to cover the outer extremities of fibers protruding from such surfaces.The coating and impregnation is accomplished by feeding a flat untreated corrugated containerboard in the direction of its open flutes and in a continuous movement into and out of a hot melt bath of the water resistant agent at a controlled speed sufficient to force the liquid agent through the flutes of the containerboard, so as to assure exposure of all surface portions of the board to the hot melt for the same amount of time at the same temperature conditions.

Abstract: A corrugated, highly flexible mica insulating structure is disclosed which comprises one or more layers of mica paper impregnated with about 5 percent to about 25 percent by weight of a flexible polysiloxane resin having about 1 percent to about 4 percent by weight of an organic titanate and about 0.5 percent to about 2 percent by weight of a naphthenate based on polymer solids, said resin binder being partially cured or B-staged wherein the resulting papers are then corrugated to impart greater flexibility without a substantial loss of its dielectric properties.

Abstract: An elastic pad which is elastic in at least one direction, includes an elastic sheet having at least one nonelastic nonwoven web joined thereto at least at two areas. The nonelastic web is gathered between the two areas. The sheet may be formed from a polyetherester and the nonelastic nonwoven web may be a web of spunlaced hydraulically entangled polyester fibers. The nonelastic nonwoven web may also include rayon or wood pulp fibers.

Abstract: Trickling sheet (2) comprising in the direction of its first side or base (3) a first zone which is greatly corrugated (5) and a second zone which is slightly corrugated or flat (6), of equal width, these zones being provided with spacer bosses (7) at the two sides of the sheet, the mean plane of the second zone or the plane of the flat zone (6) being offset in such a manner that the tops of the bosses (7) of one of the two faces of the sheet are co-planar. An assembly of such sheets juxtaposed with one another by turning one sheet out of two through 180.degree. about the median line (9) separating the two zones constitutes a packing element with rectilinear channels, without obstacles or awkward recesses or bottlenecks.

Abstract: A heat transfer element for cross flow heat exchanger consists of ceramic corrugated and planar plates. A plurality of the heat transfer elements are stacked up in such a manner that the direction of corrugation in adjacent elements intersects at right angles to form a heat transfer block for cross flow heat exchanger. Concave portions of corrugation, which confront soot-blowing flow for removing soot deposited onto the heat transfer surfaces of heat transfer block, are filled with ceramic solids. Also concave portions of corrugation corresponding to the corners, which abut the packings attached when the heat transfer block is installed on a casing, are filled with ceramic solids.

Abstract: An article of insulation and a method for making same. Outer sheet-like elements (22,24) of elastic deformable material are secured by adhesive to a base element (20) of rigid deformable material in a particular pattern which defines unbonded areas which are each bounded entirely by adhesive. The combination of the two outer elements (22,24) and the base element (20) is then deformed, following which the base element (20) retains its deformed shape while the outer elements (22,24) spring back to their original shape, leaving voids between the base element (20) and the outer elements (22,24) in which there is a partial vacuum.

Abstract: An air-borne and footstep noise insulating panel of synthetic resin foam is provided for floating floor pavements or floating wooden floors, said panel having in the interior thereof a multiplicity of voids extending normal or obliquely from one panel edge to the opposite panel edge. The panel preferably consists of a flexible closed-cell synthetic resin foam having a volume weight of 15 to 25 kg/m.sup.3, especially less than 20 kg/m.sup.3, having a cell diameter of less than 0.3 mm, and exhibiting good elastic recovery. The insulating panel has a dynamic stiffness, measured according to DIN 52214, of 1 to 13 MN/m.sup.3 and also possesses the required properties regarding long-term, burning, and insulating behavior.

Abstract: A padded book panel which utilizes three flat chipboard layers between which are positioned an upper undulating layer and a lower undulating layer.The undulating layers are of generally longer fiber length than the flat chipboard layers.In a preferred embodiment, the upper undulating layer has longer arms or flutes thereon so that, when passed through a treating pressure roller, the arms of the upper undulating layer are permanently bent or creased. The arms of the lower undulating layer, being of shorter height, are not bent during the roller treating softening process.The resulting structure is then utilized as an economically manufactured and high-quality padded book panel.

Abstract: The production of fire resistant articles is described comprising a normally combustible carrier element having applied thereto sodium silicate which is heat foamable to produce a further element capable of resisting the passage of fire and/or heat therethrough in the event the article is exposed to fire and/or heat. In a typical embodiment the articles comprise corrugated container-wall structures, in which the sodium silicate layer serves as the fire and/or heat barrier, laminating adhesive, and provides structural strength.

Abstract: An envelope system for protecting a substrate from fire or other thermal extreme. The system includes a screen, which surrounds the entire substrate and which is set off from the substrate by ridges folded into the screen, and a thermal protective coating applied to the screen and spaced from the substrate by the screen to form an air gap between the substrate and the coating.

Abstract: A highly flexible mica insulating structure is disclosed which comprises one or more mica papers impregnated with about 5 percent to about 25 percent by weight of a flexible polysiloxane resin having about 1 percent to about 4 percent by weight of an alkoxy titanate and about 0.5 percent to about 2 percent by weight of a naphthenate based on polymer solids, said resin binder being partially cured or B-staged. Such mica products have excellent flexibility, structural integrity and improved moisture resistance.

Abstract: A packing device includes a series of identical vertically corrugated streaming sheets. Each streaming sheet includes, in succession, in a direction parallel to the crests of the corrugations, at least two regions, namely a region of corrugations having a first amplitude and a region of corrugations having a smaller amplitude, which are interconnected by a transition region. Each streaming sheet has an even number of regions of corrugations in phase opposition with respect to the adjacent region of corrugations and each streaming sheet has, in each transition region and in two longitudinal lateral regions, a series of bosses, having flat heads which project alternately from one side and the other of the streaming sheet in phase with the region of corrugations having the first amplitude which is adjacent and/or in phase opposition with respect to the adjacent region of corrugations of smaller amplitude.

Abstract: There is disclosed a cross corrugated fiberboard having at least one layer of corrugations running in a longitudinal direction. A method and apparatus for making such a cross corrugated fiberboard is disclosed which first produces a single-wall corrugated fiberboard having a transversely corrugated fiberboard member glued between upper and lower facings which are offset from each other. The intermediate product is cut into pieces of a length equal to the desired width of the finished product, and these pieces are glued together seriatim with their corrugations in a longintudinal direction by the use of the offset portions of the facings. Additional layers of transversely corrugated single-faced or other type corrugated fiberboard may be built up on the longitudinally corrugated layer to make many continuous cross corrugated fiberboard products.

Abstract: A lightweight construction core having a cellular structure, whereby the cells are enclosed by walls formed from impregnated paper-like material. The core has the form of a plate with cavities or spaces provided therein and is inserted into a component in such a way that the loading of the component acts as pressure upon the edges of the walls. When the lightweight construction core is used as a support core for a ski, more particularly for a long-distance ski, the core is covered by a covering layer on its sliding surface and on its upper surface. These covering layers may be adhered to lateral edges of the ski. The cells are formed by sandwiching or layering corrugated strips with support layers disposed therebetween, said support layers also being formed from layers to which the corrugated strips are adhered.

Abstract: Honeycomb structure material having a web fabricated from sheets or ribbons of material into corrugated members which are joined together in such a fashion that I-beams are formed, the I-beams being stacked one upon another and the stacks being spaced apart throughout the web.

Abstract: A boot for enclosing and protecting an object. The boot includes a vent in the form of at least one tube projecting from the boot and open to the atmosphere for the admission or escape of air. Preferably, a second tube similar to the first and projecting from the opposite end of the boot permits passage of air through the boot to prevent excess moisture accumulation.

Abstract: A laminate composition useful as a roofing membrane comprising a top and a bottom layer of plastic film bonded together by a modified bitumen material, the top layer of said laminate either containing or being surface coated with an ultraviolet light resistant and absorbing agent. The inventive laminate has superior elongation and flexibility properties compared to prior art roofing membranes. Additionally, the inventive laminate is light weight and has good aesthetic qualities.Also provided are a novel embossed laminate, also useful as a roofing membrane, and a novel roofing system comprising a plurality of partially overlapping inventive roof membranes suitably attached to a roof deck.

Abstract: Foraminous plates formed from coiled or parallel tape lengths may be inserted between the tubesheet and a ported casing-end in a hollow-fiber type permeator, to convey effluent from the fiber lumens to the port and to support the tubesheet against the pressure differential between its inner and outer faces. The face of the support plate which the tubesheet will bear against is defined by edges of the tapes, which are held radially or laterally apart by spacing means adapted to permit effluent flow through the plate between the tapes. Either the casing-end or the plate surface bearing against it is grooved.

Abstract: A plate for assembly with similar plates to form a cooling tower packing and comprising a series of parallel mutually spaced ridges which are generally triangular in transverse cross-section. The ridges form means for spacing apart adjacent plates and when the plates are assembled together define opposite sides of at least one duct through which liquid is passed in contact with the duct surfaces while gas is passed through the duct to cool the liquid. The reverse sides of the ridges preferably form depressions which are V-shaped in transverse cross-section, one of which is provided in each duct.

Abstract: A corrugated composite panel has improved strength and load carrying abilities. Two layers of transverse unidirectional filaments sandwich a layer of unidirectional filaments which are parallel with the corrugations. The layers are impregnated with resin. Also, one or more layers of chopped randomly oriented filaments are included.

Abstract: A method for applying self-adhering elastic strips to a flexible base material includes adhering a tensioned first strip of the self-adhering elastic material to a flexible base material by sandwiching a less-or untensioned strip of the self-adhering elastic material between the tensioned strip and the base material. Tensioning the first strip in order to impart a sufficiently high degree of elasticization to the base material reduces the inherent strength of adhesion of the strip to the base material. Accordingly, the less-or untensioned intermediate strip insures good adhesion strength of the composite of the two (or more) strips to the base material. The resulting article comprises one having elasticized portions formed by adherence of the tensioned composite strip of self-adhering elastic material thereto.

Abstract: An improved corrugated sheet aluminum spacer for use in pleated media air filters is disclosed. The spacers are folded in zig zag fashion along one edge in a succession of V formations having a first height and width, and along the opposite edge in a succession of V formations having both heights and widths approximately one-fifth of the first height and width. Since the fold lines are substantially parallel, there are five V formations within a given width of the opposite edge for each one along the first edge, the fold lines of the intermediate V formations extending from the second edge only a portion of the distance to the first edge, but preferably about 90% of the length of the sheet. The V formations are formed by passing the aluminum between a pair of rolls with forming blades having overlapping edges which engage the sheet. The height or amplitude of the V formations at the small end is on the order of 0.03 to 0.04 inches in aluminum sheet having a thickness of 1 to 2 mils, preferably 0.0015 inches.

Abstract: The honeycomb structure is formed by adhering corrugated sheet units of molded glass wool together.

Abstract: The invention is a structure for a strong, lightweight corrugated sheet. The sheet is planar or curved and includes a plurality of corrugation segments, each segment being comprised of a generally U-shaped corrugation 12 with a part-cylindrical crown 13 and cap strip 20, and straight side walls 14 and 15 with secondary corrugations 16 oriented at right angles to said side walls. The cap strip 20 is bonded to the crown 13 and the longitudinal edge 18 of said cap strip extends beyond edge 17 at the intersection between said crown and said side walls. The high strength relative to weight of the structure makes it desirable for use in aircraft or spacecraft.

Abstract: The invention relates to a semi-finished product based on fibers preimpregnated with polymerizable resin, which is intended for the manufacture of components made of composite materials and having a variety of shapes, in particular long and/or thick components. This semi-finished product comprises at least one layer formed of a plane web of preimpregnated fabric and of a web of strips of preimpregnated rovings arranged in rows juxtaposed on the fabric in one and the same longitudinal direction. Another web of preimpregnated fabric is preferably provided. It passes alternately above and below the rows of strips. The fibers of the rovings and of the fabrics can be glass fibers, carbon fibers, boron fibers or Kevlar fibers.

Abstract: A protective packaging material includes a sheet of laminated, formed, fluted paper board having a flexible sheet material attached thereto. The flexible sheet is laminated to and follows the contours of the laminated formed paper board. The flexible sheet material extends beyond at least one edge of the fluted laminated paper board sheet a distance sufficient to gather and tie off the flexible sheet material once the fluted laminated paper board is positioned around the object to be protectively packaged.

Abstract: A pallet of composite construction comprising top and bottom panels of corrugated paperboard, at least two runners of stacked corrugated paperboard disposed on end between the panels, and at least two wooden stringers residing in notches in the runners and extending transversely of the runners. The runners and the stringers form a grid for supporting the top panel. Alternative constructions of the invention are described in detail in the specification.

Abstract: A loop formed of a core in the form of one or a plurality of yarn skeins and a seamlessly woven protective sheath which encloses the entire core with considerable play is provided with one or two diagonally oppositely disposed woven flat ribs so as to cause the protective sheath to take on a flat oval cross-sectional configuration even before a load is attached and/or to serve as the support for a connecting seam for two juxtaposed loop strands. The seams may also be used to fasten an abrasion protection cover. The seams may likewise be used to connect a plurality of loops or slings to form a loop mat.

Abstract: A composite structural panel of high strength and toughness is relatively inexpensively formed with state-of-the-art corrugated paperboard equipment and technology by bonding structural reinforcing fiber to a corrugated medium at an approximately 15.degree. orientation angle relative to the medium flute axes.

Abstract: This heat-insulating material comprises at least one layer of plain paper or plastic web provided on one face with a thin metal film having a thickness of 1 to 20 microns, and at least one layer of corrugated paper or pasteboard glued only along the crests of its waves to the metal coating of the first layer, the side of the corrugated web which faces the plain web layer being likewise coated with a metal film. Thus, substantially the entire area of the two metal layers are in constant mutual contact with the cavities formed by the waves of the corrugated web, which have a thickness of at least 1 to 1.5 mm. This feature and the specific arrangement of the layers are such that the metallized surfaces thereof face the direction in which the heat-flow is to be insulated, thus affording a particularly high heat-insulating efficiency.

Abstract: A reinforced corrugated paper product and container made thereof are disclosed having one or more reinforcing strands placed between the outer liner and the corrugated medium in one or more curvilinear paths. Also disclosed is a method of making the reinforced corrugated paper product.

Abstract: Packing sheets are disclosed each of which consists of a flat base and parallel tube sectors formed thereon, alternately on opposite sides of the base. The walls of the tube sectors are corrugated preferably transversely to their length. Such sheets may be assembled together, e.g. using integral joint members, to form packing units of high efficiency for use in phase contacting applications such as cooling and distillation towers.

Abstract: The specification discloses a shell for luggage and the like comprising wood fibers, glass fibers, paper scrap, glass beads, and plastic resin. The mixture is blended with water to form a slurry, is vacuum formed and is then molded under heat and pressure.