Abstract: A structural wall panel is manufactured by feeding a wafer board panel in a predetermined direction, applying an adhesive to the wafer board panel as it is being fed, locating the wafer board panel on top of a plurality of wall section components, and pressing the wafer board panel onto the wall section components for a predetermined period of time to secure the wafer board panel to the wall section components.

Abstract: The invention relates to a method for the automated manufacture of laminated plastics products, in which a pack of superimposed layers of thermosetting material, for example, sheets of resin-impregnated paper, is first formed, and the pack is placed on a rigid support structure for supporting the pack and keeping it in the correct position; the rigid structure and the corresponding pack are supplied by gripping and transfer means to a moulding press which provides for hot-forming of the above pack and, when moulding is completed, the rigid structure and the respective thermoset plastics laminate are separated and directed to respective unloading stations.

Abstract: In a composite produced by hot pressing multilayer duroplastic prepregs of reinforcing materials impregnated with a duroplastic resin system, the improvement comprising at least one layer of an epoxy resin prepreg and at least one layer of a phenolic resin prepreg are pressed together, the composite having low fume density, increased non-flammability and good solvent and moisture resistance useful for production of structural components.

Abstract: A laminate is made of textile sheet structures of synthetic fibers or glass fibers with a covering of polypropylene. The polypropylene is crosslinked by addition of crosslinking agents. The laminate has good electrical insulating properties, perfect solder bath stability, and good mechanical machinability. This laminate is provided, in heated presses, with metal layers or can be provided, in heated presses, with metal layers or can be provided with such metals layers by the application of metallic foils or by electrolytical methods, and serves for the manufacture of printed circuits and ribbon cables. An advantageous production of the textile sheet structures encased with crosslinked polypropylene can be performed on roll stands by thermoplastic encasing and smoothing in a continuous process.

Abstract: A binder for use in the preparation of a synthetic board from cellulosic and/or lignocellulosic material comprising an organic polyisocyanate and a polyester polyol, especially an aromatic polyester polyol.

Abstract: An apparatus and method for assembling elongate box units are disclosed. The apparatus includes plural, elongate clamping elements which are constructed to define a corner configuration for adjacent side pieces of a box unit. Plural, elongate tensioning rods typically extend through the clamping elements in an array with the rods extending perpendicular to the elongate length of the box unit. The method of the invention teaches the use of the apparatus for forming the elongate box units.

Abstract: An improved release medium is disclosed for use in the production of decorative laminates by pressure consolidation. The release medium comprises a self-sustaining release sheet having at least one of its surfaces coated with a composition comprised of mineral particles dispersed in a resinous matrix. The release medium may be used to apply an abrasion-resistant coating to the surface of a decorative laminate during production of the laminate by pressure consolidation.

Abstract: An improved release medium is disclosed for use in the production of decorative laminates by both low or high pressure consolidation. The release medium comprises a self-sustaining release sheet having at least one of its surfaces coated with a composition comprised of mineral particles dispersed in a resinous matrix. The release medium may be used to apply an abrasion-resistant coating to the surface of a decorative laminate during production of the laminate by pressure consolidation.

Abstract: A laminating apparatus for bonding a plurality of substrates to form a unitary laminated product such as a printed circuit board. The machine includes a frame defined by a pair of parallel, spaced vertical side plates and upper and lower load bearing cross beams extending between said side plates. The frame defines a processing chamber including front and rear openings by which access to the chamber is provided. A plurality of platen assemblies are positioned within the chamber and front and rear doors are sealingly engageable with the frame to seal the chamber from atmosphere. One door is hingedly connected to the frame whereas the other door forms part of a door assembly that includes a trackway pivotally mounted to the processing unit for movement between adjacent and spaced positions. The other door is slidable along the trackway and is driven by a fluid pressure operated actuator.

Abstract: A process for the production of a laminated sheet is disclosed, which comprises impregnating a base paper for laminated sheet using a wood pulp having an .alpha.-cellulose content of 87.0% or more with a synthetic resin to prepare a prepreg and subjecting the prepreg to laminate molding by heat. A process for the production of a metal foil-clad laminated sheet is also disclosed, which comprises impregnating a base paper for laminated sheet using a wood pulp having an .alpha.-cellulose content of 87.0% or more with a synthetic resin to prepare a prepreg, piling up the prepreg, placing a metal foil one either one or both sides of the prepregs, and subjecting the resulting prepregs with metal foil to laminate molding by heat. The laminated sheet or metal foil-clad laminated sheet of this invention has not only excellent punchability but also excellent electric characteristics and heat resistance and hence, it is quite useful as a laminated sheet for high density printed wiring system.

Abstract: The invention is concerned with a method for the manufacture of a laminated beam out of sheets of veneer as a continous process. According to the method, the sheets of veneer are stacked, in consideration of the sequence of stacking, as glued or non-glued as a continuous setting consisting of a number of layers corresponding to the desired thickness of the beam on a suitable transfer base. This setting is passed on the base into a preliminary press, pressed in the preliminary press, as well as passed into a hot press (2) for the purpose of hardening the glue. In order to permit a more efficient operation of the hot press, in the method a continuous gap (3) free of adhesive and having a width equal to the width of the whole setting is produced in the setting between at least two desired layers of veneer, along which said gap the beam blank is divided (4), after the stage of preliminary pressing, into separate blank lines. The blank lines are then passed into hot-press gaps of their own.

Abstract: There is disclosed a laminate comprising alternating polymer sheets and metal layers between the polymer sheets, the laminate being substantially free of adhesive. Each polymer sheet of the laminate has a thickness not exceeding about 25 .mu.m, and the resistivity of the metal layer is from 1 to about 4 ohms/square. Such laminates are useful in making capacitors and piezoelectric multimorphs.A method of making such laminates is also disclosed, wherein a plurality of metal-coated polymer sheets are compressed, in the absence of an adhesive, under pressure sufficient to reduce the thickness of each of the polymeric film layers to a value that is no larger than about 25 .mu.m.

Abstract: A method and related fixtures are disclosed which permit formation of stacks of thin circuitry-carrying layers. The layers terminate in an access plane having a two dimensional array of closely-spaced electrical leads. The method includes the steps of measuring the thickness of separate chips, selecting groups of chips having appropriate thicknesses, applying appropriate amounts of epoxy between adjacent chips, aligning the chips (and their electrical leads) in the direction parallel to their planes (i.e., the X-axis), and closing the cavity with an end wall which (a) exerts pressure on the stacked chips and epoxy in a direction perpendicular to the chip planes, and (b) establishes a fixed height of the stack in order to align the leads in the Y-axis. The final fixture provides a fixed-size cavity for confining the layers during curing of thermo-setting adhesive which has been applied between each adjacent pair of layers.

Abstract: A small autoclave for bonding composite lenses comprising a cylindrical pressure vessel adapted to contain therein a lens tray for holding optical lenses aligned horizontally in a vertical array.

Abstract: A process and apparatus for forming a series of plastic laminate samples one-by-one in a semi-continuous manner. Samples pass continuously one after the other through a series of heating, compressing, and cooling steps. Each sample is heated and pressed for a predetermined interval in a first compression press, then passed through a series of levels in a stack in a stacking press. The sample is passed from the last level of the stacking press to a cooling press, where it is cooled for the same predetermined interval of time. Thus samples are stepped one after another through the apparatus, with samples at each step moving simultaneously to the next successive step at predetermined intervals.

Abstract: A process for the production of a moldable fibre-containing cementitious composition in which at least one mat of a water-insoluble fibrous material is contacted with at least one surface of a shaped article of a moldable cementitious composition, the cementitious composition comprising a homogeneous mixture of at least one hydraulic cement, water in a proportion of not more than 25% by weight of the hydraulic cement in the composition, and at least one water-soluble or water-dispersible polymeric material in a proportion of at least 1% by weight of the hydraulic cement in the composition.The moldable cementitious composition may be in the form of a sheet and in the process two or more sheets may be used with a fibrous mat being sandwiched between adjacent pairs of sheets of cementitious composition.Also a moldable fibre-containing cementitious composition and fibre-reinforced cement product produced by curing of the composition.

Abstract: A method for crimping tire bead rings in which an inner die member has grooves for holding the bead rings in the area of the bead splices and an upper die member engages the outer surface of the bead rings in that area. The die members are compressed with sufficient force for a sufficient period of time so that the strands of the bead rings are held together by the insulating material around the strands in the area of the bead splices. The side portions of the grooves control the spreading of the bead rings and may be flared to compress and then release the bead rings. The grooves of the inner die member may have movable inserts for ejecting the bead rings. The upper die member may also include grooves in mating engagement with the grooves of the inner die member for enclosing the outer portions of the bead rings at the splice area and provide for release of the bead rings after crimping.

Abstract: A flywheel having elastic spokes carrying an elastic rim; and a hub coupling the spokes to a shaft and deforming in response to centrifugal force to match the radial distortion of the spokes.

Abstract: A decorated heat and pressure cured laminate, one of whose laminating sheets bears photoelectrographically applied indicia. The laminate at least also contains a thermosetting resin impregnated core adjacent to one surface of the photoelectrographic indicia bearing sheet. The laminate is cured at a temperature of about 300.degree.-350.degree. F. and at a pressure of about 1800-2000 p.s.i.

Abstract: A metallic syringe tube is fused to a plastic fitting into which the tube is inserted so that the inner end of the tube contacts the fitting, by clamping the tube between a counterelectrode which acts as an abutment for the inner end of the tube and a clamping jaw which engages the free end of the tube, and applying a resistance heating voltage to the tube between the counterelectrode and a location between the fitting and the clamping jaw for heating at least a portion of the syringe tube inner end in contact with the fitting to the melting temperature of the plastic forming the fitting.

Abstract: A foil-section feeder in a laminating system includes a slicing assembly which clamps a web at a pair of spaced locations and subsequently cuts the web along a transverse line between the two clamps. A transport device in the form of gripper tongs is inserted into a gap in the slicing assembly to grip a leading end of the web and to draw the web from a roll past the slicing assembly to a predetermined position at a stacking or laminating station.

Abstract: Contrast enhancement filter having first and second transparent glass substrates with first and second surfaces with the first surface of each facing the medium in which the filter is disposed. A sheet-like circular polarizer is provided formed of stretched plastic members covered by layers of cellulose acetate butyrate. The circular polarizer is disposed between the first and second glass substrates and faces the second surfaces of the glass substrates. A dried plastisol primer layer is disposed on the surface of the layers of cellulose acetate butyrate facing the glass substrates. First and second layers of polyvinyl butyral adhesive secure the layers of cellulose acetate butyrate carried by the circular polarizer with the primer layers thereon to the second surfaces of the glass substrates. An anti-reflection coating is disposed on the first surface of the first substrate.

Abstract: An improvement in a bowling lane having a decorative laminate surface which improvement comprises incorporating into the core of the laminate a plurality of alternating layers of glass cloth impregnated with a thermosetting resin and crepe paper also impregnated with a thermosetting resin, the glass cloth and crepe paper being interlaminarily bonded to one another.

Abstract: The invention relates to oil-modified phenolic resole varnishes particularly useful for impregnating paper laminates. Specifically, the invention relates to such compositions in which an economical and useful mixture of alcohols is used as the reaction medium for the resole formation. Laminates prepared using the varnish are characterized by salutary qualities.

Abstract: Radio frequency heat sealing method and apparatus for simultaneously fabricating a plurality of separate items from separate sets of continuous plastic strips or sheets as these sets are indexed in unison past a heat sealing station. The technique utilizes a platen equipped with heat fusing and tear sealing dies on its opposite faces and which platen is located between separate sets of plastic strips and a pair of cooperating platens. The die equipped intermediate platen is preferably cooled to permit rapid cycling and indexing of the sets of stripping therepast.

Abstract: Disclosed is a coated sheet material comprising a release medium having thereon a gluable coating for use in making a decorative heat-and-pressure consolidated laminate. The gluable coating is transferred during the consolidation step from the release medium to the back side of the laminate, and the laminate can then be glued to a reinforcing substrate with conventional glues and without sanding the back of the laminate. The transferable gluable coating comprises a linear copolymer of (A) maleic anhydride or maleic acid or maleic acid salt and (B) ethylene or a vinyl monomer having a side chain of an aliphatic group with up to four carbon atoms or an alkoxy group with up to four carbon atoms.

Abstract: A contrasting color is imparted to the decorative surface of a decorative laminate by inserting a pigment coated release sheet between the molding caul and the decorative surface during the molding operation, with the pigment facing the decorative surface. Upon application of heat and pressure during the formation of the laminate, color is transferred from the release sheet to the decorative surface. A suitable technique is also used to emboss or impart surface texture to the decorative surface during molding. Thereafter, the textured surface is subjected to rubbing or brushing to remove more color from the embossed or raised areas than the debossed areas, thereby highlighting or imparting a shaded effect to the textured surface.

Abstract: A novel release sheet comprising a web of paper having a water absorption of at least about 200 seconds which has been sized on at least one side thereof with a water-soluble, alkaline earth or earth metal salt, e.g. a calcium salt such as calcium chloride and then coated on said sized side with a film of a mixture of a salt of alginic acid, such as sodium alginate, and either (1) a triglyceride or (2) hydrolyzed or non-hydrolyzed lecithin, and a method of producing decorative laminates therewith.

Abstract: A novel method of releasing from one another in a press pack, a plurality of heat and pressure consolidated resin-impregnated laminates, including those pressed back-to-back, e.g. decorative laminates, metal clad laminates, veneer backs and the like, which method comprises utilizing, as a separator sheet, a web of phenol-formaldehyde resin-free paper having a water absorption of at least about 200 seconds which has been sized on at least one side thereof, from an aqueous solution, with a water-soluble, alkaline earth or earth metal salt, e.g. a calcium salt such as calcium chloride, and then coated on said sized side with a film of a salt of alginic acid, such as sodium alginate.

Abstract: Improved moisture-resistant fire-retardant decorative floor and wall covering laminates and a method for making the same are described, having an asbestos backing, an intermediate layer of wood veneer and a face wear-resistant layer of vinyl, through which the decorative wood veneer may be seen. The vinyl wear resistant layer is usually clear and colorless. An optional colored vinyl layer may be laminated between the wood veneer and asbestos layer. The asbestos backing resists moisture penetration and transmits the moisture laterally to the edges of the laminate where it escapes. The asbestos and the vinyl face protect the wood veneer from fire, thus providing a highly fire-retardant and moisture-resistant, but decorative floor and wall covering.

Abstract: A method of making close tolerance laminates comprises the steps of positioning in an open stack a plurality of B-staged epoxy resin saturated fibrous sheets and providing the top and bottom of each stack with a contour pad, the stack-facing side of which is adapted to provide a horizontal pressure gradient ranging from higher at the center to lower at the edges, and consolidating the stack under heat and pressure. In contrast to conventional processes which produce laminates which are eliptical in shape (thicker in the center), the new process produces laminates having little or no center-to-edge variation.

Abstract: A novel method of releasing from one another in a press pack, a plurality of back-to-back heat and pressure consolidated resin-impregnated laminates, e.g. decorative laminates, metal clad laminates, veneer backs and the like, which method comprises utilizing, as a separator sheet, a web of phenol-formaldehyde resin-free paper having a water absorption of at least about 200 seconds which has been sized on at least one side thereof, from an aqueous mixture, a water-soluble, alkaline earth or earth metal salt, e.g. a calcium salt such as calcium chloride, then coated on said sized side with a film of a mixture of a salt of alginic acid, such as sodium alginate, and either (1) a triglyceride or (2) hydrolyzed or non-hydrolyzed lecithin.

Abstract: Cloth, such as cotton, burlap, or canvas, has a photographic emulsion laminated thereto, along with an outer protective film. The composite laminate formed is permanent, and sufficiently firmly affixed to the cloth that the cloth is machine washable without substantial damage or alteration of the laminated image. The method of making the cloth laminated with photographic emulsion comprises applying the photographic emulsion facedown on a protective film, coating with adhesive and applying the cloth, drying the emulsion and cloth and pressing between plates, at least one of which is heated. By dipping the emulsion in a stripping solution prior to applying to the protective film, adherence and permanence of the laminate formed is substantially increased.

Abstract: This specification discloses an improved ice hockey stick in which strips of reinforcing plastic material disposed in preferably embedded into the wide side surfaces of the handle of an ice hockey stick which otherwise is made of suitable hardwood.The construction is such that the completed hockey stick handle will be perceived by the hockey player as a conventional wooden hockey stick and not as a hockey stick whose handle is made of plastic or is covered with plastic material.An improved method for making handles for hockey sticks is disclosed wherein the reinforcing strips are applied to a large number of handle components which are pressed together in a suitable apparatus before installation of the blades to the lower extremity of the handle component.

Abstract: A method and apparatus for securing two ribbed panels of composition board together to form a single panel having two outer flat surfaces. The method comprises positioning panels on opposite sides of a support member and temporarily securing them to same. An adhesive is applied to the edges of the ribs on the panel and the panels secured to the support member are stacked one over the other. One or more alignment members are placed on one of the panels between two of the ribs, another set of panels are coated with adhesive, and placed on top of the panel with the alignment members so that the alignment member is urged between two corresponding ribs of the lower panel of the set on the upper support member such that the alignment member aligns the ribs of the two juxtapositioned panels as the edges of the ribs meet and are glued together.

Abstract: The method for manufacturing profiled laminated insulation material having a U- or L-shaped configuration for installation in the slots of a dynamo-electric machine wherein a number of carrier bands of an epoxide resin-impregnated or resin-coated insulation material such as a combination of layers of aromatic polyamide paper and woven glass filaments are assembled for lamination each to the other.

Abstract: A device for separating the platens of a press so that wooden blanks in an unpressed form can be readily loaded therebetween. The device includes outwardly extending arms carried on the corners of each of the platens. Pneumatically operated bellows are provided between cooperating pairs of outwardly extending arms which are carried on diagonally opposite corners of each of the platens for separating the platens when pressurized. Alternate pairs of platens have pairs of bellows interposed between the outwardly extending arms carried on different diagonals. A switch is carried below the press for disengaging the pneumatic system when the press is being closed.

Abstract: Spherical friction or sliding bearings are produced by first making a laminate from a layer of a thermosetting resin and a layer of material having a low friction coefficient. The thermosetting resin is used to impregnate a first web or fabric. The low friction coefficient material may be provided in the form of a further webbing or fabric, for instance, made of polytetrafluoroethylene. The thermosetting material may, for example, be a phenolic resin which is at this point of manufacture in its A-state and hence tacky. In order to permit the immediate further processing of the laminate with the thermosetting resin still in its tacky A-state, a dry adhesive film which neutralizes the tackiness, is applied to the laminate in sandwich formation which is then cut into pieces or strips of suitable size. The sandwich strips are then placed into a mold and pre-shaped and precision cut at room temperatures while the resin is still in its A-state.

Abstract: The invention relates to solutions which are stable on storage and which contain curable mixtures of polymaleimides, comonomers for these polymaleimides and, optionally, polymerization catalysts and compounds which contain at least one furyl radical, preferably furfuryl alcohol. The solutions are used for the manufacture of crosslinked polymers containing imide groups. Usually a substrate is impregnated with the solution. After drying, curing is carried out at 100 to 300.degree. C. Using a known method, for example, glass fibre fabric is subjected to hot pressing together with a copper foil, curing being effected. This gives correspondingly copper-coated laminated sheets which are outstandingly suitable for the manufacture of printed circuits.

Abstract: A heat and pressure consolidated structure comprising, in superimposed relationship,(A) a self-supporting substrate, and(B) a decorative .alpha.-cellulose paper sheet impregnated with a composition comprising(1) a blend of an aqueous melamine/formaldehyde resin solution and from about 2% to about 20.0% of an ethylene glycol or (2) an aqueous solution of the resinous reaction product of melamine, formaldehyde and from about 2.0% to about 20.0% of an ethylene glycol, is disclosed.

Abstract: A method of label installation employing two sheets suitably coated to produce an image on the underside of the upper transparent sheet and thereafter applying the upper sheet to a label receiving surface.

Abstract: An elongated board of artificial lumber having a length greater than the width and thickness comprising a mixture of irregularly shaped elongated splinters of wood substantially aligned along the length of the board; a substantial portion of the mixture including splinters from about 2" to 10" long; a sealant coating the surface of the splinters; an adhesive carried on the splinters with the sealant restricting the penetration of the adhesive into the splinters so as to produce hardened layers between the splinters for holding the splinters in an interlocking configuration.

Abstract: A transparent armor structure is provided by laminating multiple units consisting of one or more ply of unidirectionally oriented olefin polymer film formed by a fluid compression process. The units are positioned so that the lines of orientation of adjacent units are at angles to each other. Bonding of the plies is achieved solely through the application of heat and pressure to the composite of positioned plies.

Abstract: A method for manufacturing luminous hollow bodies to be used in signs or the like. The luminous hollow bodies are molded in such a way that first an endless side wall thereof is molded and then an end wall is molded at one end of the space confined by the endless side wall. The endless side wall is made up of a plurality of layers which give the final hollow body desired properties of light-transmission, strength, and the like. These layers while still in a soft moldable condition are placed around an inner mold member and are surrounded by an outer mold member made up of a plurality of sections which can be brought together to define with the inner mold member an endless space having the thickness and configuration of the desired side wall of the final hollow body.

Abstract: The invention contemplates a scouring-pad construction wherein an outer tubular envelope is inside-out loosely knitted around a loosely fabricated pliant stuffer material, given lengths of such materials being secured to establish end closure along generally transverse alignments. In a preferred form, the inner and outer materials are both knitted, and thermoplastic filament is an important component of both knits, the ends being heat-sealed for permanent closure by local fusion of such filaments.

Abstract: A heat and pressure consolidated laminate in which the back most sheet has fused thereto a surface film composition of polyvinyl alcohol, animal glue or starch which serves a glue line to which conventional glues adhere, the film being adhered to the back most sheet during heat pressure consolidation of the laminate by transferring the same from a release layer to the back most surface of the laminate and fusing the transferred film to the thermosetting resin impregnated in the back sheet.

Abstract: A patterned, decorative laminate is made by: (1) preparing a core layer, comprising a plurality of fibrous sheets impregnated with a resinous material, (2) placing on top of the core, at least one unfilled kraft paper barrier sheet, impregnated with at least 30 weight percent of an aminotriazine-aldehyde, urea-aldehyde, thiourea-aldehyde or unsaturated polyester resin, (3) placing on top of the impregnated barrier sheet, an unfilled protective sheet, impregnated with an aminotriazine-aldehyde, urea-aldehyde, thiourea-aldehyde or unsaturated polyester resin; the protective sheet having a design printed on the bottom surface facing the barrier sheet, the design covered with colored pigmented material, and (4) heat and pressure consolidating the sheets into a unitary, bonded laminate.

Abstract: Pressing apparatus wherein a cell containing a workpiece is subjected to pressure in a press in which at least one resilient layer of disc-spring units is used as a pressure distributing medium comprises a press, two press plates and a pressure distributor disposed between the pair of plates and one of the press platens. The pressure distributor consists of a plurality of disc-spring units disposed adjacent to one another over the surface of a supporting plate. Each disc-spring unit comprises a pair of disc-springs disposed one on either side of the supporting plate with the apexes of the springs towards each other, the springs of each pair being fastened together by means of rivets passing through an orifice in the plate.

Abstract: Method of laminating pluralities of sheets as unitary panels with heat and pressure curable adhesive in which unlaminated, uncured sheet pluralities are alternately stacked in a press lay-up with partially cured or semicured unitary sheet pluralities and the entire layup is subjected to heat and pressure for a time sufficient to partially cure the originally uncured sheet pluralities and bring the interspersed, partially cured sheet pluralities to full cure. Thereafter, the newly partially cured and fully cured units are removed and the partially cured units used alternately with new uncured sheet pluralities. This method obviates the need for planishing plates heretofore used to produce smooth surfaces on metal foil covered core units for printed circuit manufacture.

Abstract: Sections successively severed from a double layer web of synthetic thermoplastic film, e.g., flattened tube stock, as produced are each stacked and welded to a precedingly stacked section near one edge of a tear off pat or hanger portion to which a bag portion of the section is attached; forming ultimately a pad of bag sections, wherein each section includes either a completed bag or a partially completed bag, in the latter case with final bag producing operations carried out simultaneously for all bags already welded together in a pad structure.