Abstract: A cloth employing graphite fibers may be subjected to different composite material formation processes so that three separate sections of heat capability may result across continuous fibers. Thus, one section may have optimum cold temperature strength while a removed section may have optimum high-temperature strength, with a transition section interceding. The existence of continuous fibers across these sections obviates the necessity for a mechanical joint thereby maximizing the reliability and performance characteristics of a resulting composite structure.

Abstract: A process for producing an energy absorbing panel having at least one energy absorbing surface in a mold comprising an upper mold and a lower mold. The process comprising placing a reinforcing layer in both of the upper mold and the lower mold. A liquid foamable polyurethane composition is then dispensed in the lower mold and allowed to expand to fill from 50-80% of the mold volume. The upper mold and lower mold are then closed to define an enclosure corresponding substantially to the energy absorbing panel and the liquid foamable polyurethane composition is expanded to fill the remainder of the enclosure to produce a resilient polyurethane foam core which adheres to the reinforcing layers thereby providing an energy absorbing surface. The reinforcing layer has a tensile strength greater than the tensile strength of the resilient polyurethane foam core.

Abstract: The method of making a tubular pultruded member having a longitudinal axis and a substantially uniform wall thickness throughout includes providing a heated die with a mandrel extending through the forming die section and a bath of liquid polymer, simultaneously pulling continuous reinforcing fibers and at least one carrier tape with wall spacers through the liquid polymer bath around the mandrel and into and through the heated die to shape and cure the liquid polymer into a tubular pultruded member, the wall spacers having a thickness equal to the uniform distance between the outside surface of the mandrel and the inside surface of the die.

Abstract: A heat recoverable wraparound fabric sleeve comprises 7-13 heat recoverable fibers in one direction and 4-8 fibers some of which are heat recoverable and some of which are heat stable in a perpendicular direction. This sleeve has particularly useful recovery behavior where recovery ratios are less than 40% and where an auxiliary patch is used to bond overlapping edges of the wraparound sleeve to each other.

Abstract: Bonded yarn bundle, manufacture thereof and textile sheet materials obtainable therefrom.There is described a yarn bundle having a tenacity of at least 42 cN/tex, comprising at least one twisted multifilament yarn composed of a first synthetic polymer, for example polyethylene terephthalate, whose individual filaments have become bonded together over essentially the entire thread cross-section by the melting of a second thermoplastic synthetic polymer whose melting point is at least 10.degree. C. below the melting or decomposition point of the first synthetic polymer.The yarn bundles are notable for high strength, good flexural stiffness and good hydrolysis resistance and are usable in particular for manufacturing textile sheet materials for use in hot, moist environments, in particular for use as wire cloths for papermaking machines.

Abstract: Disclosed is a heat insulating plate including a plurality of superposed, heat-resisting, synthetic paper sheets integrally bonded with each other, and one or more metal films interposed between adjacent two of the plurality of synthetic paper sheets.

Abstract: The present invention provides an offset blanket for printing having a supporting layer and a surface printing layer laminated on the supporting layer. The surface printing layer has a surface configuration in which the mean peak distance is controlled so that good paper discharging properties can be maintained.

Abstract: A metal matrix composite is produced by forming a rapidly solidified aluminum base alloy into powder. The powder is plasma sprayed onto at least one substrate having thereon a fiber reinforcing material to form a plurality of preforms. Each of the preforms has a layer of the alloy deposited thereon, and the fiber reinforcing material is present in an amount ranging from about 0.1 to 75 percent by volume thereof. The preforms are bonded together to form an engineering shape.

Abstract: The invention relates to adhesion of various elements of a structure, such as a ski, consisting of an assembly of at least one first element and a second element by the action of an adhesive layer made of resin or foam, by interspersing at least one thermoplastic film, adapted for adhesion, and composed of a compound of polyamide-based thermoplastic elastomers and of copolymers of olefins, the latter preferably being constituted of at least two different monomers of olefins, between the adhesive layer and the junction surface of the first element. The composition of the thermoplastic film is such that the thermoplastic elastomers represent at least 50% and preferably 60% of the total weight of the compound.

Abstract: Super high flow ethylene polymer compositions comprising at least one linear ethylene polymer are disclosed which have improved processability for use in making thermally formed articles (e.g., thin-walled lids, cups and containers). The compositions have a processing index from about 0.005 KPoise to about 1 KPoise and are particularly useful in thermal forming processes having shear rates of at least 2,000 sec.sup.-1 (e.g., injection molding processes). The compositions can be used to make thin-walled lids and cups and have good environmental stress crack resistance and Gullwing Tear properties.

Abstract: A lining material for pipe lines, especially those buried in the ground such as sewage pipe lines, and a process for providing such pipe lines therewith, includes a flexible tubular film, a resin-impregnated sheet covering the outer surface of the flexible tubular film, and a tubular covering material having a strong resistance to tensile force. The sheet may be constructed by several units of sheet fractions which are overlapped in both lateral end portions so as to be slidable over each other in opposite directions to form a tubular sheet. The lining material is applicable for repair/and reinforcement to the inner surface of a pipe line having damages portions. According to the process for providing pipelines with this lining material, thermocuring of the lining material applied onto the inner surface of a pipe line can be carried out by moving a nozzle for jetting pressurized steam from one end to the other end of the pipe line without applying high pressure to the pipe line.

Abstract: A composite element which comprisesA) at least one top layer of polyvinyl chloride or a polyvinyl chloride-containing polymer mixture, andB) a preferably semirigid or rigid polyurethane foam, the top layer (A) or the polyurethane foam (B) or the two constituents (A) and (B) containing units of an .alpha.,.beta.-olefinically unsaturated polyester having a molecular weight factor per double bond of from 150 to 3000,a process for the production of composite elements of this type, and liquid, urethane-containing polyisocyanate mixtures based on diphenylmethane diisocyanates and higher homologs thereof and .alpha.,.beta.-olefinically unsaturated polyesters for the preparation of the polyurethane foam (B) are described.

Abstract: An electrical cable having a wire bundle core surrounded by a thermal protection sleeve, the thermal protection sleeve consisting of a sandwich structure of outer acrylic adhesive layer and a silicone foam core.

Abstract: A composite article comprising a fibrillated polytetrafluoroethylene (PTFE) matrix, electrically conductive particles, and energy expandable, electrically nonconductive hollow polymeric particles, which composite is conductive and allows for the flow of electricity and which, upon attaining a temperature which causes expansion of the expandable polymeric particles, becomes insulating and causes the flow of electricity to cease. The articles are thin and can be used as electrical circuit breaking elements.

Abstract: A process for producing a bale of crimped staple fibers includes the repeated steps of cutting continuous filament crimped nylon tow into segments, maintaining the integrity of the segments while tramping charges of the segments under pressure to form a compacted layer, holding the layer to retain layer compaction and then pressing the layers and strapping the pressed layers.

Abstract: A moisture-permeable waterproof fabric having a resin layer formed on at least one surface thereof, wherein the resin layer is composed of a mixture comprising a product obtained by reacting a urethane prepolymer having isocyanate terminals with an N-carboxyamino acid anhydride and an amine, and a polyurethane having a 100% modulus of at least 40 kg/cm.sup.2, the amount of the resin product contained in the resin layer is 12.9 to 85.3% by weight of total solid resin, and the amount of the urethane/amino acid copolymer contained in the resin layer is 0.9 to 9.0% by weight of total solid resin. The fabric has both an excellent moisture permeability and waterproofness, as well as an excellent abrasion resistance and washing fastness.

Abstract: A frictional material is made of cloth which is impregnated with a bituminous material and/or a synthetic resin. The cloth is woven from a yarn made by twisting single yarns with reinforcing metal wires. The single yarn consists of a center core in the form of a roving or a yarn of inorganic fibers such as glass fiber, rock wool or ceramic fiber and a covering element in the form of a sliver of organic fibers such as staple fiber, aromatic polyamide fiber or flame-resistant fiber. The frictional material obtained is excellent in physical strength and in resistance against heat, effective for preventing dispersion of dust and irritation to human bodies, and advantageous from the viewpoint of cost.

Abstract: An improved fiber reinforced glass composite includes a refractory fiber in a matrix of a nitrogen-containing black glass ceramic having the empirical formula SiN.sub.z C.sub.x O.sub.y where x ranges from greater than zero up to about 2.0, preferably 0.1 to 1.0, y ranges from 0.5 up to about 3.0, preferably 0.7 to 1.8, and z ranges from above zero up to about 1.5, preferably 0.2 to 1.0. Preferably the black glass ceramic is derived from cyclosiloxane monomers containing a vinyl group attached to silicon and/or a hydride-silicon group. The cyclosiloxane monomers are polymerized and then pyrolyzed in an ammonia-containing atmosphere to produce the nitrogen-containing black glass (silicon oxycarbonitride).

Abstract: An elongated composite tape structure including an elongated carrier, and a plurality of sinterable, thermally fusible tape strips of different characteristics disposed on the elongated carrier. Also disclosed is a reel-to-reel process wherein the composite tape structure as stored on a reel is incrementally processed by longitudinally feeding the tape structure through one or more processing stations at each of which the tape is driven in an indexed manner so that predetermined portions of the tape are processed at each station for substantially the length of the tape structure.

Abstract: Polyolefin resin compositions and oriented microporous films prepared from same comprising an ethylene-propylene block copolymer having an ethylene content of about 10 to about 50 wt %, a propylene homopolymer or random propylene copolymer having up to about 10 wt % of a comonomer of ethylene or an .alpha.-olefin of 4 to 8 carbon atoms, a low molecular weight polypropylene, a beta-spherulite nucleating agent and an inorganic filler. The microporous films have improved breathability, strength, toughness and break elongation.