Abstract: A family of reinforced net structures which include oriented polypropylene netting with oriented propylene/1-butene copolymer film as an adhesive, and a process for making these nonwoven fabrics.

Abstract: A family of strong film structures which include unoriented propylene/1-butene copolymer film bonded to oriented polypropylene netting, and a process for making these structures.

Abstract: A dielectric system for coaxial electrical conductors is provided. The dielectric system separates an inner and an outer conductor and is composed of a first layer of cellular polyparabanic acid. This layer directly contacts and provides a continuous skin circumferentially surrounding the inner conductor along its length. A second layer, consisting of a crosslinkable polymeric lacquer which provides a continuous skin enclosing the first layer is also provided. The dielectric system is used in coax cables.

Abstract: A composite nonwoven fabric-like laminate which includes an integrated mat of polymeric microfibers having a diameter of less than 30 microns and a layer of nonwoven linearly oriented thermoplastic netting, the mat and netting being either continuously bonded or spot-bonded to produce a laminate with the desired properties.

Abstract: The invention is a process and apparatus for forming a reticulated web net oriented from a perforated film wherein the perforated film is produced by thermoforming projections or pips on an endless perforated surface and subsequently skiving the pips off flush with the film, said thermoforming, skiving and orientation all taking place in a continuous fashion.

Abstract: A process for preparing an environmentally stable plastic composition having narrow molecular weight distribution by visbreaking a propylene polymer using an activated portion of the propylene polymer as a prodegradant. The process includes forming the prodegradant by activating a portion of the propylene polymer either by exposure to ionizing radiation or by oxidation.

Abstract: Methods of making network structures include forming on one side of a sheet of thermoplastic polymer a plurality of parallel continuous main ribs and forming on the other side of the sheet in a different direction a plurality of parallel discontinuous tie ribs. The tie ribs are discontinuous in the areas where they cross over the main ribs to eliminate any increased thickness at the cross-over points of the main ribs and tie ribs. The ribbed sheet thus formed is drawn in either one direction or in two preferably perpendicular directions to open the sheet into a network structure and to orient the main ribs and preferably also to orient the tie ribs.

Abstract: Method and apparatus for controlling static charges on dielectric material by producing an ionized field and controlling the balance and magnitude of the directional conductivity of the ionized field. The directional conductivity characteristics are typically controlled by applying a DC bias of selected polarity and magnitude to a high voltage AC output which is applied to an ionizing member to produce the ionized field.

Abstract: The invention is a process and apparatus for continuously thermoforming plastic containers wherein opposed co-rotating discs process a molten sheet of thermoplastic material having a wedge-shaped cross-section, said discs transporting said thermoplastic material through a plug-assisted pressure and/or vacuum forming station, a shear station and a part removal station.

Abstract: The invention is a process for forming a reticulated web net oriented from a perforated film wherein the perforated film is produced by thermoforming projections or pips on an endless perforated surface and subsequently skiving the pips off flush with the film, said thermoforming, skiving and orientation all taking place in a continuous fashion.

Abstract: Methods of making network structures include forming on one side of a sheet of thermoplastic polymer a plurality of parallel continuous main ribs and forming on the other side of the sheet in a different direction a plurality of parallel discontinuous tie ribs. The tie ribs are discontinuous in the areas where they cross over the main ribs to eliminate any increased thickness at the cross-over points of the main ribs and tie ribs. The ribbed sheet thus formed is drawn in either one direction or in two preferably perpendicular directions to open the sheet into a network structure and to orient the main ribs and preferably also to orient the tie ribs.

Abstract: A rocket assisted projectile has a solid propellant charge within the projectile casing extending substantially throughout the length of the casing and has an inhibited centerport therein which axially extends substantially throughout the length of the propellant charge, and the solid propellant charge comprises a cast single explosive sensitized charge bonded to the casing and bonded to the inhibitor material of the inhibited centerport during cure of the cast charge with said charge having bifunctional characteristics to produce rocket thrust for the projectile in flight and high explosive blast of the projectile at target.

Abstract: Methods of making network structures include forming on one side of a sheet of thermoplastic polymer a plurality of parallel continuous main ribs and forming on the other side of the sheet in a different direction a plurality of parallel discontinuous tie ribs. The tie ribs are discontinuous in the areas where they cross over the main ribs to eliminate any increased thickness at the cross-over points of the main ribs and tie ribs. The ribbed sheet thus formed is drawn in either one direction or in two preferably perpendicular directions to open the sheet into a network structure and to orient the main ribs and preferably also to orient the tie ribs.

Abstract: Apparatus and method for drilling a borehole into the sapwood of a tree and injecting a chemical solution into the borehole, preferably during withdrawal of the drill bit, including facilities for supplying a liquid through a passageway within the bit and facilities for injecting a quantity of liquid, proportional to the volume of the borehole and allocated simultaneously with and in response to progression of the drill bit, into the borehole as the drill bit is being withdrawn therefrom.

Abstract: An interlocked yarn having a plurality of continuous filaments which have substantially no twist and having at spaced intervals along the length thereof at least one of the filaments encircling the other filaments to interlock the filaments together. The method of making the interlocked yarn includes feeding a plurality of continuous filaments into a fluid jet which has a fluid medium passing therethrough in a direction substantially counter to the direction of travel of the filaments. The interlocked filaments are pulled away from the fluid jet at a rate less than the feed rate. This produces an interlocked yarn having some of the filaments encircling the other filaments to provide an interlock at spaced intervals which eliminates the need to twist the bundle of filaments.

Abstract: A rocket motor grain consisting of a one-piece solid base propellant divided into an aft end section having a central cavity extending throughout its length, a forward end section having a central longitudinal cavity filled with a propellant having a substantially higher burning rate than the base propellant and a central web section being defined between the forward and aft end sections. This radial end burning rocket motor grain provides a means for utilizing high energy and high density propellants which have high burning rates in a manner such that the burning rate effects can be offset to provide enhanced motor performance without the sacrifice of high energy. After initiation of the rocket motor grain, the aft end section and central web section begin burning together to provide the desired mass flow rate, followed by initiation of a higher burning rate propellant in the forward section.

Abstract: Process for the treatment of industrial process waste water including electrolytic reduction of nitro compounds and nitrate ester contaminants.

Abstract: An injector blade for injecting liquid into a tree wherein the blade has a concave cutting edge, a flat non-beveled first surface containing a cavity for ejectment of a treating solution onto the surface of a frill made during impact of the blade with a tree and a beveled second surface.

Abstract: Apparatus for treating trees includes at least one cutting element having a concave cutting edge and a flat surface containing a cavity for ejectment of a treating solution onto the surface of a frill made during impact of the cutting element with a tree, and facilities for positioning and moving the cutting element from tree to tree.

Abstract: Method and apparatus for treating trees includes at least one cutting element having a fluid passageway therethrough, facilities for positioning the cutting element around the periphery of a tree, and facilities for driving said cutting element through the bark of a tree to expose the sapwood therein and for ejecting a predetermined quantity of fluid through the passageway in the cutting element onto the sapwood of a tree. In addition, the invention includes a method for the chemical treatment of trees.