Abstract: A process for coloring nonwoven webs of fibrous material, particularly air-layed webs, in which solid, water insoluble particulate pigments are introduced and intermixed with the fibers of the web to provide the coloring thereof. An initial formed web of fibrous material has a suspension of insoluble pigment in a liquid applied thereto, is fiberized, and is reformed into a web and bonded with a binding liquid. Alternatively, the pigment may be mixed with the separated fibers after the fibrous material is fiberized and before reforming.

Abstract: A continuous process for effecting the acid hydrolysis of cellulosic waste materials, at high solids and in a most economically desirable manner. The process may be controlled to produce, as primary products, glucose, furfural and/or xylose. By appropriate control of water and temperature, through the use of direct steam injection, high solids feedstocks may quickly be converted, in good yields, to valuable products, thus making the process very attractive from a practical commercial standpoint.

Abstract: A highly effective photoinitiator for cationic polymerization of monomer formulations is prepared by reacting bis-[4-(diphenylsulfonio)phenyl] sulfide bis-halide wherein halide is chloride or bromide in an aqueous solution with a compound having the formula T.MF.sub.6 wherein M is one of phosphorus, antimony or arsenic and T is hydrogen or a metal whose halide salt is water soluble. The two compounds react in the aqueous medium to produce a precipitate which includes at least about 50 percent by weight bis-[4-(diphenylsulfonio) phenyl] sulfide bis-MF.sub.6, and this precipitate may be recovered and dried for utilization without further purification if so desired. Purification may be effected by dissolving the dried product in an organic solvent, cooling the solvent to precipitate the impurities, and thereafter recovering relatively pure bis-[4-(diphenylsulfonio) phenyl] sulfide bis-MF.sub.6 by chilling the solvent solution to form a precipitate, and then separating and drying the precipitate.

Abstract: A sheet dispensing carton having a uniaxially oriented film material covering the dispensing opening thereof. Application of finger pressure to the film produces a straight line slit in the film along the axis of orientation, thus providing abutting lips of film which control the dispensing of an interfolded sheet material product from the carton.

Abstract: A container for liquid product, such as yogurt or other dairy products, is disclosed which is formed of a single sheet of paperboard folded into a cup-like container. The container includes a front and a back panel which are folded into a tubular shape and are sealed together along their side edges. At the bottom of the container, an infolding flap arrangement is provided, and an anti-leak tab is formed along the bottom edge of the front panel of the container to be inserted between the infolding flaps at the bottom of the container and the rear panel to inhibit fluid leaks from the bottom of the container.

Abstract: A device for applying a stretch film lid to a cup has a planar stretching member, including a relatively rigid peripheral portion, and a multiplicity of finger elements spaced thereabout and extending inwardly therefrom. The finger elements are readily displaceable from the plane of the stretching member, and define, upon displacement, a passageway configured to permit the cup to pass through. Securing means is engageable with the stretching member to secure a stretch film thereto. When a cup is urged against the stretching member, it displaces the finger elements, thereby defining the passageway, with the finger elements and securing means cooperating to extend the stretch film along a plurality of axes, to permit the application of the stretched film to the cup.

Abstract: A wristwatch display carton is disclosed which includes a face panel, having a cut-out therein to receive the wristwatch, which is positioned at an inclined angle tilting into the interior of the carton so that wristwatch is partially sheltered by the top and sides of the carton. A pair of infolding flaps attached respectively to the opposed side panels aid in positioning the face panel within the carton. Four different embodiments of blanks from which the carton may be erected are disclosed.

Abstract: A highly effective photoinitiator for cationic polymerization of monomer formulations is prepared by reacting diphenyl sulfide with chlorine gas in a Friedel-Crafts reaction in an organic solvent to form bis-[4-(diphenylsulfonio)phenyl] sulfide dichloride. This product is recovered and then reacted in an aqueous solution with a compound having the formula T.MF.sub.6 wherein M is one of phosphorus, antimony or arsenic and T is hydrogen or a metal whose halide salt is water soluble. The two compounds react in the aqueous medium to produce a precipitate which includes at least about 50 percent by weight bis-[4-(diphenylsulfonio) phenyl] sulfide bis-MF.sub.6, and this precipitate may be recovered and dried for utilization without further purification if so desired. Purification may be effected by dissolving the dried product in an organic solvent, cooling the solvent to precipitate the impurities, and thereafter recovering relatively pure bis-[4-(diphenylsulfonio)phenyl] sulfide bis-MF.sub.

Abstract: A flexible heat sealable packaging material including a flexible web of substrate material, a normally tacky heat sealable wax composition on the surface of the substrate, and a non-blocking coating applied as a hot melt over the heat sealable layer which has good release properties with respect to itself and to the non-coated side of the substrate. The non-blocking coating melts at the heat sealing temperatures to allow the underlying heat sealable material to pass therethrough and complete the seal.

Abstract: Ink compositions suitable for ink jet printing on a variety of substrates including metal, synthetic polymers and glass, are provided. The compositions are characterized by excellent weathering properties, are fade-resistant, abrasion-resistant and, when heated to temperatures of about 300.degree. F., exhibit resistance to aircraft hydraulic fluids. The preferred compositions comprise essentially a colorant or combinations thereof, an epoxy-phenolic binder resin component, a solvent mixture containing alcohol, water, methyl ethyl ketone or methyl cellosolve and, optionally, an electrolyte.

Abstract: Multiple distributor heads of the Kroyer type in side-by-side position over a common suction tunnel for laying fibrous material onto a foraminous forming-wire screen travelling along the tunnel.

Abstract: An ultraviolet light curing apparatus for curing inks and other coatings on cans and similar containers in which the cans are passed by a conveyor about a source of ultraviolet light and, as the cans rotate about the source, they receive virtually all the light rays from the ultraviolet light source by means of the ultraviolet light being reflected by reflectors rotating circumferentially around the light source.

Abstract: A flexible packaging sheet material bearing a tacky wax composition coating and a non-blocking overcoating in the form of a continuous film of an ethylene-vinyl acetate copolymer which incorporates between 10 and 35 percent by weight of solid low to medium density polyethylene particles of a size smaller than about 50 microns.

Abstract: A hermetically sealed pouch, being safe for the storage of foods, avoiding giving a taste to enclosed food, the filled pouch being able to withstand cooking temperatures typically used to cook food.

Abstract: A process for conditioning ferrous particles with heat and a reducing atmosphere to reduce the oxygen content of the particles in a non-agglomerative manner and to make the conditioned particles readily pourable and free-flowing, and to process the particles into steel strip.

Abstract: A resin blend for producing a peelable heat seal, which does not produce "angel hair" upon separation, includes polybutylene and a copolymer of ethylene with, for example, vinylacetate or methyl acrylate. Typical substrates are high density polyethylene and nylon.

Abstract: Adhesive tapes which change color in the presence of water or steam at elevated temperature are provided which are useful as sterilization indicators. The tapes comprise an adhesive layer and a polymeric base film containing on one surface thereof a coating of a thermotropic ink comprising a binder resin, a colorant which undergoes a color change in the presence of water or steam at elevated temperature, and a solvent for said binder resin and colorant.

Abstract: Two spray coatings are successively applied, without an intervening curing step, to coat the inside surface of a shell for a two-piece can. This "wet-on-wet" coating technique utilizes zone spraying, wherein only the sidewall is covered during the first application, with the second coat being applied to all inside surfaces.

Abstract: Melt extrudable polypropylene-polystyrene compositions are provided which are particularly suitable for use in extrusion coating. Substrates coated with such compositions as well as methods of producing such coated substrates are also provided.

Abstract: A container having a tray portion and a cover sealed to the peripheral top edges of the tray. Cut score lines on the inner side of the cover provide a splitting of the paperboard of the cover upon opening to allow the cover to be peeled from the tray to a hinge at the back edge of the tray. Offset double cut score lines may be provided on the upper and lower sides of the cover at the front edge of the tray, which will split upon opening of the cover to yield overlapping locking flaps which can be used to reclose the cover. Flanges may be attached to the lateral side edges of a paperboard tray by cut score hinges, and adhered to the inner side of the cover to provide layer separation of the flanges upon opening rather than layer separation of the cover. Alternatively, double cut score lines can be formed along the lateral sides of the cover in position to register with lateral side flanges on the tray, which split and provide overlapping locking flaps when the cover is opened.