Abstract: Method of producing a stratiform material, wherein 35-45 parts by weight of solvents for polyvinylacetate (PVA) homopolymer in the form of flakes or pearls are stirred with 10-15 parts of PVA and 2-5 parts by weight of oil, while separately mixing 25-30% by weight of wood powder having a granulometry in the range of 50-150 microns and mineral fillers in an amount of 10-20% by weight, then intermixing the liquid and powdery phases to obtain a homogeneous mixture which is passed through calendering rollers, the last pair of which produces an embossing on at least one of the two surfaces, the layer being reduced to a thickness in the range of 0.2-2.0 millimeters.

Abstract: A no-wax ski base is formed of a composite material in which relatively harder particles are uniformly distributed in a plastic matrix. The harder particles are angularly oriented with respect to the gliding surface of the ski base to provide a unidirectional friction coefficient that combines good gliding properties in the ski forward direction with good grip properties in the backward or "kick off" direction of the ski. These friction properties are maintained throughout the entire life of the ski base irrespective of wear. The ski base may be manufactured by extruding the plastic composite material through a split nozzle while causing it to flow substantially asymmetrically through the split nozzle to obtain the angular orientation of the harder particles in the plastic matrix.

Abstract: A flexible wallcovering is made by applying a foamable composition (13) to a woodchip paper (12, 14) having woodchips defining a relief surface on the paper by a screen printing process and then foaming the composition. Preferably, the wallcovering is of two ply construction with a woodchip content between the plies and the paper is formulated so that the upper ply is dry removable from the lower ply. The woodchips are at least 2 mm in average length; and the woodchips form 20 to 35% by weight of the paper.

Abstract: A process for manufacturing a sheet having a chip-like design composed of a plurality of chips densely aligned in a plane without overlapping and a solidified binder uniformly filling the interstices among the chips and firmly and integrally bonding the chips to one another in sheet form. The sheet is useful as a floor material, wall material, and the like.

Abstract: A building panel of a layered design with textured inner and outer layers separated by a core to form a wall unit. The inner and outer layers are composed of a mixture of urea-formaldehyde resin, water, plaster and a curing agent. The core is composed of similar materials with an insulation material added.

Abstract: Structural members having strength properties comparable or superior to those of solid wood are made from a composite wood material comprised of elongated wood flakes bonded together with a binder. The grain direction of the flakes extend generally parallel to their longitudinal axis and the flakes are oriented so that the longitudinal axis of at least a majority is generally parallel to the longitudinal axis of the structural member. The structural member is formed as a solid one-piece unit or assembled from two or more structural components which are made from the composite wood material and are joined together in angular relationship with an adhesive.

Abstract: A method of reclaiming thermoplastic material from municipal waste wherein the thermoplastic material is separated from the municipal waste and is decimated into fragments which are of a size to pass through a screen of a predetermined mesh, for example a mesh with one-half inch openings. Similarly, fallen leaves are kept segregated from other municipal waste and are shredded or similarly decimated so that they may pass through a screen having a predetermined mesh, for example of a mesh comparable to that through which the plastic must pass. The fragments of thermoplastic material and the leaf fragments are blended so as to be thoroughly intermixed, subjected to sufficient heat and pressure so that the thermoplastic material may coat and bond to the surfaces of the leaf fragments and form a unitary mass of leaf fragments and plastic material. The consolidated mass of leaves bonded by the thermoplastic material is then permitted to set and cure so as to be formed into any desired shape.

Abstract: A composite wood material, specially adapted for use as part of a door with a long fire rating, comprising a board material made of wood chips and fire-retardant chemicals and one or more sheets of material of pressed wood fibers with a fire retardant added thereto, designed to optimize resistance to penetration by fire, increase screw holding ability, resist splitting and minimize cost.

Abstract: A woven fabric belt having a coating of polyurethane on each face and extending through the interstices of the fabric. The polyurethane is the reaction product of a polytetramethylene ether glycol of 4,4'-methylene di(cyclohexylene isocyanate) cured with m-phenylene diamine and having at least one face of said belt covered with the polyurethane having walnut shell powder incorporated therein.

Abstract: This invention relates to a hydrophilic shaped article of a water-insoluble polymer selected from the group consisting of regenerated cellulose, cellulose ether, cellulose ester and polyalkylene, and capable of forming fibers and films, said article containing amorphous particles of an originally water-soluble cellulose ether prepared from natural cellulose and rendered by chemical modification at least partly water-insoluble while remaining water-absorbent.

Abstract: Solid lignocellulosic material is bonded together by heating and pressing at a natural wood, pH by reacting sugars, starches or both in the presence of a catalyst capable of catalyzing transformation of the sugars and starches into a solid, insoluble in water, and an alkaline buffering agent if needed, for example to make waterproof plywood or composite products from particulate wood without hydrolytic degradation of the wood.

Abstract: A shaped decorative article comprising a rigid body of a densified mixture of particulate material and a binder, the body having a plurality of elongated ridges projecting from the outer surface thereof which are separated from each other by valleys, whereas the inner surface of the body forms a plurality of elongated cavities respectively aligned in longitudinal direction with the ridges, each of the ridges has a pair of side faces including an angle with each other and terminating in a tip of rounded cross section constituting the edge of the respective ridge and each of the cavities having an inner end adjacent the tip of the respective ridge. The wall thickness of the body gradually increases from the tip of each ridge to the valleys adjacent thereto to reach its maximum at the center of each valley, and the density of the body gradually decreases from the tip of each ridge toward the adjacent valleys.

Abstract: Improved print speed and image intensity are obtained in a pressure-sensitive record sheet material by incorporating a cross-linked urea-formaldehyde agglomerated resin pigment in the coated surface of the acid-reacting sheet. A typical formulation of the coating comprises kaolin clay, a zinc-modified phenol-formaldehyde resin, said urea-formaldehyde resin pigment and a suitable binder. When contacted under pressure with a surface containing microscopic rupturable capsules of a colorless chromogeneous material, a colored mark is formed by transfer of the colorless chromogeneous material to the acidic pigment coating.

Abstract: Flame-proofed particleboard wherein the layers of wood particles have crystalline, water-insoluble, ammonium polyphosphate added thereto, is disclosed.

Abstract: A reactive catalyst for the polycondensation of amino resins used for bonding water-penetrable cellulosic particles is disclosed. Said catalyst, if used in combination with a known catalyst, increases the rate of polycondensation of the resin while at the same time allowing the use of lower amounts of resin solids without imparting any loss in bonding strength. The catalyst comprises a concentrated aqueous solution of a mixture of organic and inorganic components, the organic components being formaldehyde and urea or a non resinous condensation product of formaldehyde and urea, and the inorganic component being a water-soluble alkali metal halide.

Abstract: A reactive catalyst for the polycondensation of amino resins used for bonding water-penetrable cellulosic particles is disclosed. Said catalyst, if used in combination with a known catalyst, increases the rate of polycondensation of the resin while at the same time allowing the use of lower amounts of resin solids without imparting any loss in bonding strength. The catalyst comprises a concentrated aqueous solution of a mixture of organic and inorganic components, the organic components being formaldehyde and urea or a non resinous condensation product of formaldehyde and urea, and the inorganic component being a water-soluble alkali metal halide.

Abstract: Processes for the production of a building material in the form of woodstone panels or sheets which comprises preparing a mixture consisting essentially of between 30 and 40 parts by weight of finely divided calcined magnesite, a wood filler consisting predominantly of wood chips in an amount that is between 3 and 4 times, or between 1.05 and 1.8 times, the weight of the calcined magnesite, between 2 and 8, and preferably between 4 and 6, parts by weight of inactive diatomaceous earth, between 9 and 12 parts by weight of magnesium chloride in the form of an aqueous solution, and sufficient additional water to bring the water content of the mixture to between 30 and 60 parts by weight, compressing the said mixture into a desired shape by subjecting it to a pressure between 15 and 50 bars and hardening the said compressd mixture within a period of 20 minutes at a temperature between 120.degree. and 220.degree. C., and building materials produced by the said processes.

Abstract: The negotiable document which may be used, e.g. by airlines includes a cover sheet provided with a hot spot carbon or other image transfer medium and at least one underlying sheet fully or partly coated with microcapsules of a dye intensifier and attractor. When information is imprinted on the cover sheet, the microcapsules of the dye intensifier in the underlying sheet are burst to wet the sheet and, thus, allow impregnation of the image transferred by the hot spot carbon into the fibers of the sheet. At the same time, the dye within the hot spot carbon is attracted into the sheet. The impregnation of the sheet is sufficient to prevent removal of the image from the underlying sheet without first destroying the sheet or mutilating it in such a manner that the defalcation effort is obvious.

Abstract: A compound capable of forming a color on contact with an electron accepting compound and useful as a chromogenic material for recording members represented by the general formula (I) ##STR1## wherein A represents an oxygen atom or a group capable of forming a lactam ring with benzen ring D; Y represents a hydrogen atom or a functional group (such as a halogen atom or a nitro group); and when A is an oxygen atom, R represents an amino, i.e., unsubstituted, group or a substituted amino group; R.sub.1 and R.sub.3, which may be the same or different, each represents a hydrogen atom, a lower alkyl group, a nitro group, an amino group, or a substituted amino group; and R.sub.2 represents a hydrogen atom or a lower alkyl group; wherein R.sub.1 and R.sub.2 or R.sub.2 and R.sub.3 may combine with benzene ring C to form a nitrogen-containing heterocyclic ring condensed therewith; and when A is a group capable of forming a lactam ring with benzene ring D, R represents ##STR2## R.sub.2 represents ##STR3## R.sub.4 ', R.

Abstract: Melamine phosphate having hydrogen bonded thereto from about 0.5 to about 1.5 moles of phosphoric acid per mole of melamine phosphate, particleboard containing said melamine phosphate material and processes for the production thereof, are disclosed.

Abstract: A layered material for linings or coatings is made of a paste consisting principally of wood powder having a fineness similar to flour and vinylic glue, said paste being convertible into a foil by rolling cylinders, a press or other means.The layered material may be engraved, printed, painted or may withstand any finishing work as wood.To engrave or emboss the layered material an embossing belt or an embossing cylinder can be employed.To manufacture the embossing cylinder a method is disclosed in which even the model itself which has to be imitated can be used as matrix for the cylinder.

Abstract: Solid lignocellulosic material is bonded together by heating and pressing with a bonding composition comprising at least one carbohydrate and an acid capable of catalysing hydrolysis of the carbohydrate, for example to make plywood or particle board.

Abstract: A selected powdery form of a graft copolymer containing hydrophilic chains provides a highly moisture-absorbent media which is suitable for use in absorbent bodies, particularly those used for absorbing body exudates such as catamenial devices, diapers, wound dressings, surgical sponges, incontinence pads and the like. The powdered form of said copolymers is useful alone or in combination with other absorbent materials in making up the absorbent bodies.

Abstract: A nonwoven fabric-like material having a unique combination of strength, absorbency and hand consists essentially of an air-formed matrix of thermoplastic polymer microfibers having an average fiber diameter of less than about 10 microns, and a multiplicity of individualized wood pulp fibers disposed throughout the matrix of microfibers and engaging at least some of the microfibers to space the microfibers apart from each other. The wood pulp fibers are interconnected by and held captive within the matrix of microfibers by mechanical entanglement of the microfibers with the wood pulp fibers, the mechanical entanglement and interconnection of the microfibers and wood pulp fibers alone forming a coherent integrated fibrous structure. The coherent integrated fibrous structure may be formed by the microfibers and wood pulp fibers without any adhesive, molecular or hydrogen bonds between the two different types of fibers.

Abstract: A laminated structural member is fabricated with one layer of sheet material such as plywood or fiberboard and an adjacent layer bonded thereto and formed from a mixture of scrap particles of thermoplastic wire and cable insulation, wood particles, comminuted paper, sawdust, and a suitable resin binder. The fabrication procedure is carried out by initially forming a mixture of reclaimed thermoplastic wire or cable insulation, a thermosetting binder, and one or more wood like fillers, such as wood chips, comminuted paper and sawdust and mold release agent. The mixture is then placed in a mold with the sheet material and is subjected to heat and pressure to form a structural member.

Abstract: Process for the transformation of comminuted cellulose ether, which has been rendered at least largely water-insoluble by modification but is still highly swellable with water, into an easily workable material, comprising wetting a hydrophilic support web, applying the comminuted modified cellulose ether to the wetted web, and drying. This invention also relates to an apparatus for performing the process.

Abstract: A rapidly curable phenol-formaldehyde resin is provided in the form of an emulsion which has particular utility in panel board production, particularly waferboard production.

Abstract: A plywood panel is provided with a durable and highly weather-proof surface and a plurality of embossed parallel grooves therein for enhancing its appearance. A metal caul plate is formed with the series of spaced apart ridges corresponding to desired grooves in the panel. A moist, spongy fibrous web is placed between the surface of the plywood panel and the surface of the caul plate, with an adhesive coating on either the panel or on the web surface facing the panel. The assembly of the caul plate and the plywood panel with the web therebetween is inserted into a hot press and subjected to heat and pressure and the web is firmly adhesively secured to the panel. The web, as well as the adhesive used for securing the web onto the panel, contains a quantity of thermo-setting phenolic resin so that the covered surface of the panel is durable and highly weather-proof. The original plywood panel may be of low quality and grade, having surface defects and blemishes, all of which are concealed by the covering web.

Abstract: Surface precure of amine-aldehyde resins employed in the manufacture of composition board can be prevented by adding a water soluble thiosulfate salt, e.g., sodium thiosulfate, to the resin.

Abstract: Disclosed is a novel pressure sensitive adhesive drafting film which is specially formulated to permit it to be imaged in electrostatographic copiers. The film is a multilayered structure comprising layers from the top down of:(a) a matte coating capable of receiving and holding graphic information;(b) a layer of organic resinous material in film form;(c) a layer of pressure sensitive adhesive;(d) a release coating;(e) a layer of an organic resinous material in film form as release liner; and(f) a back coating which is a layer of an organic resinous binder material having dispersed therein:I. a particulate solid material of particle size ranging from 3 to 20 microns in the longest dimension, andIi. a water insoluble antistatic agent of a type to cause the film to have a surface resistivity in the range of from 10.sup.9 to 10.sup.14 ohms/sq.

Abstract: Ethylene-propylene elastomer-based insulating (or semi-conductive) electrical tape is improved for long-term exposure to heat induced by high electrical current densities by the addition of sufficient thermally conductive non-black, non-reinforcing inorganic filler to endow the tape with a thermal resistivity no more than 350.degree. C.multidot.cm per watt.

Abstract: A recording method and material employing a basic color former component which changes to a colored species by an interaction with a cellulose fiber and has a molecular extinction coefficient of not less than about 100 in an ethyl alcohol solution.

Abstract: A wood-base building component of cellulosic particles and/or fibers and adhesive binder is, in a single pressing operation, molded into an integral product of sheathing and support members for use in constructing wood-frame buildings. The dies utilized during press-molding form a flat panel containing a plurality of evenly spaced channels that serve as support members to replace conventional framing such as studs, joists, and rafters. The integral product may serve as roof, wall, or flooring components in the usual wood-frame building applications.

Abstract: A highly machinable, shapeable decorative laminate is made from a non-abrasive base core consisting of a plurality of sheets, each sheet consisting essentially of cotton linter fibers in paper form containing a curd phenolic resin, the core having superimposed thereon a print sheet impregnated with a cured thermoset resin.

Abstract: A composite dry process hardboard includes a hardboard panel consisting of pressed defibrated and refined wood chips, plus a surface layer of paper cemented to the hardboard by a cured resin made from phenolic resin mixed with water and ethylene glycol. If desired, an embossed pattern may be incorporated into pressing the paper overlay. In the subject process, first a mass of defibrated wood chips is mixed with a binding agent, the mass is then formed into a mat which is coated with a mixture of phenolic resin and polyhydric compound such as a polyhydric alcohol having a boiling point higher than water. Then, a dry sheet of paper is laid on the mat and the composite structure is then cured by the application of heat and pressure.

Abstract: Production of consolidated overlayed product comprising a core of particulate cellulosic material bound with a polyisocyanate binder and an overlay bound to the core through a phenolformaldehyde resin which forms a barrier inhibiting penetration of the polyisocyanate into the overlay.

Abstract: A process for manufacturing a unique fire retardant particleboard includes the supersaturation of wood chips, followed by spraying of the wood chips with an aqueous solution of borate and sulfuric acid, after which the sprayed wood chips are allowed to stand for a period of time to become impregnated and saturated with the aqueous solution. The impregnated wood chips are then allowed to dry, after which a urea formaldehyde adhesive is applied to the wood chips, and the chips are consolidated to form the fire resistant wood particleboard.

Abstract: Metal-modified para-substituted phenol-aldehyde novolak resins suitable for use in pressure sensitive manifolding systems are produced by melting and mixing together a para-substituted phenol-aldehyde resin and a metal alkanoate salt in the presence of an ammonium compound.

Abstract: The roll formation of polymer coated regenerated cellulose films is substantially improved by incorporating in polymer coatings for such films from 0.25 to 4% by weight, based upon the weight of the polymer coating, of finely divided cellulose fibers having an average particle fiber length within the range of from 10 to 150 microns.

Abstract: Disclosed is a novel paper sheet adapted for the electrostatographic reproduction of images on both sides thereof. The paper bears a surface sizing material having dispersed therein a plurality of microcapsules comprising water or a hydrated salt encased in an impervious capsule wall of a solid material. As the paper is subjected to the electrostatographic fusing operation, water is released from the microcapsules to replenish that lost due to the heat of fusing. In this manner, the paper can be imaged on its other side without encountering the problems associated with dehydration of the paper.

Abstract: Method for laying flooring on a solid sub-floor comprising the step of coating the sub-floor with a loose intermediate layer, screeding and thereafter covering the intermediate layer with a pressure distributing layer of semi rigid or rigid plates, whereby the intermediate layer consists of sawdust which has been sifted in order to remove particles having a size exceeding 5 mm and which have improved slender values by having been cut and split substantially along the grain, the sawdust being spread on the sub-floor, screeded to a thickness of 5-25 mm, and covered with the plate material which may be coated with an outer or wearing layer.

Abstract: A rapidly curable phenol-formaldehyde resin is provided in the form of an emulsion which has particular utility in panel board production, particularly waferboard production.

Abstract: An interleaving material for separating glass sheets and protecting them from scratching and staining during storage or transit comprises a porous finely divided support material, such as wood flour, impregnated with a weakly acidic material such as an organic acid (e.g. adipic acid) or an acid reacting salt, and fine particles of a chemically inert plastics material, e.g. a methyl methacrylate, preferably of slightly larger particle size than the acid-impregnated support material.

Abstract: A woven fabric belt having a coating of polyurethane on each face and extending through the interstices of the fabric. The polyurethane is the reaction product of a polypropylene ether glycol of 4,4'-methylene di(cyclohexylene isocyanate) cured with p,p'-methylene dianiline and having at least one face of said belt covered with the polyurethane having walnut shell powder incorporated therein.

Abstract: By providing a dispersion system which incorporates hard waxes having high molecular weights and a melting point greater than 180.degree.F., a unique paper coating additive is achieved. Preferably, the wax is powdered to a particle size less than 50 microns, and is dispersed in a system compatible with typical paper coating colors. In the preferred embodiments, high molecular weight Fischer-Tropsch waxes are employed.

Abstract: An absorbent body is provided for use in such products as catamenial napkins and tampons, diapers, wound dressings and the like, which body incorporates hydrophilic, wet resilient, swellable, cellulosic fibers produced by a single reaction treatment of cellulose. The cellulose fibers are treated with an agent which renders the fibers hydrophilic while simultaneously crosslinking them with a crosslinking radical having the structure: ##EQU1## where X is chosen from the group consisting of H or COOY: Y is chosen from the group consisting of Na, K, Li, Ce or H; and k, m and n are integers ranging from 0 to 4.

Abstract: A coated transfer sheet for pressure-sensitive copying systems which comprises an organic colorless color former containing two or more potential chromophoric systems each of which is capable of being activated substantially immediately when the compound is brought into contact with one or more activating substances.

Abstract: A chipboard structure is disclosed which is made substantially of 100% sawdust waste material. The chipboard has a core portion which contains the coarsest particles of the sawdust, the surface portions of the chipboard containing the finest fraction of the sawdust, intervening portions of the chipboard containing fractions which increase in size from the surface to the core portion of the chipboard. The method and apparatus involve the use of sawdust having a width and/or thickness no greater than 4.75 mm, the fractions of the sawdust having a particle size greater than 0.1 mm being sliced to increase the quantity of the fractions below 0.1 mm. Because the small particles are randomly disposed in the chipboard in directions not only parallel to the plane but also perpendicular and at an angle thereto, characteristics are obtained which are as good as chipboard produced from conventional materials other than sawdust.

Abstract: A structural member is fabricated from a mixture of scrap particles of thermoplastic wire and cable insulation, wood particles, comminuted paper, sawdust, and a suitable resin binder. The fabrication procedure is carried out by initially forming a mixture of reclaimed thermoplastic wire or cable insulation, a thermosetting binder, and one or more wood like fillers, such as wood chips, comminuted paper and sawdust and mold release agent. The mixture is then placed in a mold and is subjected to heat and pressure to form a structural member.

Abstract: wood is disintegrated to prepare a mass of wood fibers which are formed into a mat. A unique hardboard is prepared by compressing a preformed mat comprising thermoplastic resins, wood fibers and wood fibers coated with such resins. The hardboard has a resin content of from about 37% to about 39% and a wood fiber content from about 53% to about 57%. The moisture content of the hardboard is ordinarily within a range from about 4% to about 10%, but such moisture content has the range expected for wood products under a wide range of temperatures, humidities, pressures and related variables. The thickness of the hardboard must be within the range from 790 to 850 microns and the density of the hardboard must be within the range from 690 to 750 milligrams per cubic centimeter. Heretofore such hardboard has been proposed for use as a facing lamina in multilamina composites for covering up various irregularities in the surface of the adjacent lamina while preserving a smooth facing surface.