Abstract: A reinforcement seal and tear tape or line is produced by a method wherein selected fibrous yarn is passed into a bath of hot-melt adhesive maintained at a desired temperature. The yarn is spread laterally and tensioned within the bath to cause the adhesive to penetrate and surround the fibrous yarn. The adhesive adhered to the yarn is extruded within the bath to controllably reduce the amount and cross-sectional shape of the adhesive coating on the yarn by contact with rollers, one of which is submerged in the adhesive bath or a die partly submerged in the adhesive bath. The yarn with an extruded adhesive coating thereon is then cooled by passing through a refrigerated cooling chamber after which the adhesive coating is formed into a desired shape by contact with a chilled-forming surface of superimposed rollers. Reels are then used to coil the coated yarn into spools.

Abstract: A composite pressure sensitive adhesive construction contains a central release liner, a layer of an adhesive on each side thereof, and an exterior release liner on at least one of the adhesive layers. The central release liner and the exterior release liner contain release coatings on surfaces thereof which contact the adhesive layer. The composite construction may be made up in the form of a roll for easy dispensing or in the form of a precut tape. The pressure sensitive adhesive construction is generally useful for making any type of sealing connection wherein an initial releasable connection is desired. For example, the pressure sensitive adhesive construction may be utilized in sealing pipe insulating jackets wherein the exterior release liners are removed and the adhesive construction is applied to the opposite longitudinal ends or sides of the insulating jacket cover.

Abstract: A process for producing a thick reinforced plastic article by laminating unit layers of a molding material composed of a thermosetting resin and a reinforcing material, which comprises scattering fibers on the surface of an earlier disposed unit layer while it is in the uncured state, then curing the unit layer, and laminating the next layer on the cured unit layer.

Abstract: An apertured flexible sheet component for an air cushion vehicle flexible skirt, such as an apertured section of a flexible skirt bag member, comprises reinforced flexible sheet material including a reinforcing fabric having substantial spacings between groups of cords from which the fabric is formed. The reinforcing fabric is coated with elastomeric material and apertures are formed in the elastomeric material within the spacings between the groups of cords in the reinforcing fabric so that no broken cords are caused by formation of the apertures.

Abstract: A composite pressure sensitive adhesive construction contains a central release liner, a layer of an adhesive on each side thereof, and an exterior release liner on at least one of the adhesive layers. The central release liner and the exterior release liner contain release coatings on surfaces thereof which contact the adhesive layer. The composite construction may be made up in the form of a roll for easy dispensing or in the form of a precut tape. The pressure sensitive adhesive construction is generally useful for making any type of sealing connection wherein an initial releasable connection is desired. For example, the pressure sensitive adhesive construction may be utilized in sealing pipe insulating jackets wherein the exterior release liners are removed and the adhesive construction is applied to the opposite longitudinal ends or sides of the insulating jacket cover.

Abstract: A laminated insulating material comprised of a metal foil sheet bonded to a non-woven glass fiber paper-like sheet by a latex acrylic adhesive and process for making same is disclosed herein.

Abstract: An enclosure for a light fixture and the method for making such an enclosure via the securement of a plastic or glass lens, wherein the light fixture has a window which does not have to be opened in normal use for replacement of bulb, but is normally accessible through a rear or side opening. The window opening is circumscribed with a front flange projecting radially outward. A double sided adhesive tape is affixed to the flange and is united with the lens. A metal cored trim covers and secures the flange and the unified tape-and-lens structure. This latter assembly may be further secured by crimping.

Abstract: A flexible resin adhesive coated substrate is made by: (A) coating a sheet material with a wet, heat reactive adhesive resin, containing a monomer and an amount of an ultraviolet radiation sensitive photoinitiator effective to cause polymerization of monomer in response to ultraviolet radiation, and (B) applying ultraviolet radiation to the adhesive resin coating on the sheet material to polymerize monomer without the application of heat, forming a dry, uncured coating of adhesive bonded to the sheet material.

Abstract: A method of forming a layered composite material of the type formed under heat and low pressure and to one outer surface of which a protective thermosetting polymer is bonded.

Abstract: A method for making a multi-chambered flotation bag for helicopters or the like comprises forming two outer panels and at least one internal panel to substantially identical contour from flat/rubberized fabric sheet, forming at least two internal transverse wall members formed from flat rubberized fabric sheet, disposing adhesion strips for tapes along selected areas adjacent the peripheries of selected panels and wall members, and adhering the panels and wall members together to form the flotation bag structure.

Abstract: A flexible, e.g. polyurethane, open cell foam sheet is impregnated with a controlled amount of a liquid polymerizable resin system which cures at ambient temperature, and the resin impregnated sheet is immediately chilled at a suitably reduced temperature, e.g. 40.degree. F. or below, to arrest polymerization or hardening. The resulting resin impregnated sheet is stored at such reduced temperature. When needed for adhesive bonding the chilled resin impregnated sheet, cut to the desired pattern or size, is applied between the surfaces of objects to be bonded, e.g. fiber reinforced polyurethane insulation blocks and plywood strips, or such insulation blocks and the steel hull of a liquid natural gas (LNG) container or marine tanker.

Abstract: A tubular composite structure for transmitting forces comprises a metal tubular core, preferably of aluminum, having a layer of structural metal adhesive on the exterior surface of the core. On top of the structural adhesive layer are alternating laminae of resin impregnated unidirectional reinforcing fibers, particularly carbon or graphite fibers, and of woven fiberglass, beginning with a layer of woven fiberglass followed by a lamina of resin impregnated continuous unidirectional reinforcing fibers and continuing in alternating fashion but ending with a final layer of resin impregnated continuous unidirectional reinforcing fibers, each successive layer of resin impregnated continuous unidirectional fibers having the fibers oriented at an angle of between about 5.degree. to 12.degree. with respect to the longitudinal axis of the metal tube and in opposite orientation with respect to the next preceding layer. The fibers in the woven fiberglass layer are oriented at 0.degree. and 90.degree.

Abstract: A multi-layer adhesive material for producing an adhesive bond between two essentially mutually parallel surfaces, especially for providing an adhesive bond between a surface of a ski and a surface of an attachment body for the ski, wherein the multi-layer adhesive material contains two outer adhesive surfaces and at least one predominantly elastic carrier layer. There is provided in addition to the predominantly elastic carrier layer at least one predominantly plastic carrier layer having at its outwardly directed side or face one of the two adhesive surfaces of the adhesive material.The method of using such adhesive material for establishing an adhesive connection between the aforementioned surfaces contemplates profiling the surface of the body to be connected with another body for increasing its adhesive surface, and which profiled surface faces the predominantly plastic carrier layer of the adhesive material.

Abstract: A graphic laminate for mounting a sheet-like article such as a photograph or the like includes a flat mounting base, a layer of plastic material having a pressure sensitive adhesive coating on both surfaces thereof, one such surface being placed in contact with the front side of the base and the sheet-like article being placed in contact with the other surface of the plastic material to form a laminate with the plastic material lying intermediate the base and the sheet-like article. The description includes a method of making this laminate.

Abstract: A system is disclosed for laminating surfacing materials, such as high and low pressure laminates, paper, wood veneers, metal foils and the like to core material, such as plywood, particle board, flake board, hard board, rigid plastic foams and the like.The disclosure includes a machine and a method of laminating, particularly utilizing high viscosity, hot melt adhesives. A sandwich is formed at ambient temperature with the adhesive between the laminate and core either as sheet material or precoated on the laminate or the core. The method employs a progressive heating of the adhesive and adjacent parts of the sandwich from ambient temperature through tackiness to an activating temperature followed immediately by a physical migration of the adhesive to wet out adjacent surfaces followed by a cooling of the sandwich to a mechanical bonding adhesive temperature.

Abstract: Processes and devices are described which employ flexible substrates made from cloth impregnated with a resin of a particular composition. The flexible substrate is made into double-clad printed wiring substrate for use in double-sided circuits. These substrates exhibit excellent dimensional stability during circuit fabrication and soldering as well as excellent flame retardance and electrical insulation resistance.

Abstract: A composite body having a portion of a thermosetting material and a portion of a thermoplastics material is formed by including a layer of fabric having a serrated surface between the two portions as a connecting means. The fabric with its serrated surface facing outwards is applied to an area of a thermosetting material after which a thermoplastics material in particulate form is intimately mixed into the serrations of the fabric. The composite body, such as a weaving shuttle, is then pressed, fused and cured.

Abstract: A substrate to be laminated is passed from a feed and brush table through an adhesive spreader, which spreader applies a pattern of adhesive along the top and bottom surfaces of the substrate. An index table, having a plurality of supporting rollers, supports a bottom laminate to be adhered to the bottom of the substrate at a predetermined indexed location. The substrate is transported onto the indexing table to a predetermined indexed location while being supported along its longitudinal edges by cone-shaped rollers to maintain undisturbed the pattern of adhesive. At the indexed location, the substrate drops onto the underlying laminate in predetermined relationship thereto. A top laminate to be adhered to the top surface of the substrate is positionally indexed on the index table and lowered onto the substrate.

Abstract: A tubular composite structure for transmitting forces comprises a metal tubular core, preferably of aluminum, having a layer of structural metal adhesive on the exterior surface of the core. On top of the structural adhesive layer are alternating laminae of resin impregnated unidirectional reinforcing fibers, particularly carbon or graphite fibers, and of woven fiberglass, beginning with a layer of woven fiberglass followed by a lamina of resin impregnated continuous unidirectional reinforcing fibers and continuing in alternating fashion but ending with a final layer of resin impregnated continuous unidirectional reinforcing fibers, each successive layer of resin impregnated continuous unidirectional fibers having the fibers oriented at an angle of between about 5.degree. to 12.degree. with respect to the longitudinal axis of the metal tube and in opposite orientation with respect to the next preceding layer. The fibers in the woven fiberglass layer are oriented at 0.degree. and 90.degree.

Abstract: Disclosed is a method of bonding two fluoropolymer membrane sheets. According to the disclosed method, a third sheet is contacted with a base and then interposed between the two membrane sheets. The two membrane sheets may also be contacted with a strong base. The resulting sandwich of three sheets is heated and pressed to effect the bond.

Abstract: An insulation system for use in rocket motors containing solid composite propellants is disclosed. Some composite rocket propellants are based on carboxyl-terminated polybutadiene (CTPB) and others on hydroxyl-terminated polybutadiene (HTPB) binders. An important requirement of such systems is the ability of the wall insulation to adhere to the combustion chamber and of the composite propellant to adequately adhere to the insulation system. With CTPB propellants, a sheet insulant comprising chrysotile asbestos fibers and floats dispersed in a CTPB polymeric binder has been successfully employed. However, the use of a similar sheet insulant based on HTPB polymeric binder has not proved to be compatible with HTPB propellants.

Abstract: A method and an apparatus of piling veneer sheets for plywood sheets at a predetermined position comprising at least one stage of conveyer means having two horizontal, parallel and spaced conveyer belts to support a veneer sheet, stopping means to stop the veneer sheet when one edge of the veneer sheet reaches a predetermined position, detecting means to detect the veneer sheet when the veneer sheet is fed to or adjacent to the predetermined position, and pressing means for pressing the veneer sheet downwards in response to a signal from the detecting means to a predetermined piling position.When the veneer sheet is stopped, one terminal edge is at said predetermined position. Thus, when veneer sheets are piled, the edges of the sheets maintain their position so that piled sheets can be readily used in plywood manufacturing process, and productivity of plywood sheets is improved.

Abstract: A ribbed tick comprising a top sheet and a bottom sheet connected at their edges and at least one ribbon-shaped partition wall connected to the inner sides of the top and bottom sheets by welded seams extending along the longitudinal edges of said partition wall.A method of preparing a ribbed tick comprising the steps of placing a ribbon having tapes of a thermoplastic film material located at its longitudinal edges between a top sheet and a bottom sheet material, heating said tapes to melt said thermoplastic film material and to bond the ribbon to said top and bottom sheet materials and connecting said top and bottom sheet materials to form a ribbed tick having ducts for a stuffing material.

Abstract: A fastening device having a sheet of eddy current conducting material sandwiched between two sheets of heat-activatable plastic material, the sheet of eddy current conducting material having a matrix of apertures, the sheets of heat-activatable plastic material covering the matrix area, and the device including means on an outer surface for releasably holding the device against a non-metallic surface prior to heat activation of the sheets of plastic material by an induction heater apparatus and system.

Abstract: A target made of interchangeable sections each comprising a multiplicity of membranes or plies of penetrable, elastomeric or resilient, tear resistant sheet resin material, the membranes being separated by intervening layers of porous or low density, resilient material such as foam resin material.

Abstract: In a transparent laminated window or canopy for aircraft and the like, flexible fabric tape impregnated with a silicone elastomeric adhesive applied against a surface of one of the plies or reinforcements of the window is used to bond at least one of the plies or reinforcements to another element of the laminated window or to a reinforcing frame of an aircraft panel which comprises the laminated window. Such tape is easier to apply during the assembly operation than previously used silicone pastes, thereby reducing the cost of fabricating aircraft panels incorporating said window or canopy without paying any unduly large penalty in adhesion between the elements of the panel.

Abstract: A composite structure comprising a rigid closed-cell foam core element to which is bonded an initially resilient open-cell foam material and a layer of high strength reinforcing material which are compressed against the core element so as to cause a thermosetting resinous material to form a resin matrix extending throughout the open-cell material and reinforcing layer to bond the composite layers together.

Abstract: Making film adhesives from a thermosettable resin composition presents difficulties if the composition is not soluble in a volatile solvent, or not readily fusible without gelling prematurely, or undergoes undesirable advancement on being subjected to extrusion procedures.Such compositions in the form of solid particles can be made into film adhesives by coating a carrier with a readily-curable thermosettable resin composition, which is preferably tacky, applying the solid particles to the coating, and then curing the coating under conditions such that the particles of thermosettable resin composition remain curable.

Abstract: Flat plate absorber member includes a flat heat absorbing sheet of a thin metal foil such as copper, or a thin plastic film such as polyvinyl fluoride, bonded to a channeled substrate, and particularly to a plastic laminate such as a glass epoxy laminate. The improved absorber member provides an energy collecting efficiency which is much greater than that of a much more expensive conventional collector having a series of copper tubes soldered to a copper sheet. The absorber is preferably made by the method of taking a base sheet of fully cured glass epoxy laminate and overlying it with a precut, patterned intermediate layer of semi-cured glass epoxy which defines the depth of the side walls of the channels. The cover sheet of metal foil or plastic film is then placed over the semi-cured glass epoxy intermediate layer and heat and pressure are applied to bond the semi-cured glass epoxy to the cover sheet and to the previously cured base sheet.

Abstract: In a system for making bonded belt loops, a layer of thermally activated adhesive material is provided on one side of a strip of interfacing material. The reverse side of a strip of belt loop material is engaged with the side of the strip of interfacing material opposite the adhesive layer. An endless belt is utilized to transport the strip of belt loop material and the strip of interfacing material along support structure and into engagement with a revolving bonded drum. Rotating knives are disposed on opposite sides of the support structure for trimming the strip of belt loop material to a predetermined width. Thereafter a folding apparatus is utilized to fold the opposite edges of the strip of belt loop material around the strip of interfacing material. The bonding drum includes heating apparatus and functions to activate the adhesive layer on the strip of interfacing material.

Abstract: A heat-resistant resin composition suitable for use in multilayer super high density printed circuit boards, comprising a polyaminobismaleimide, a polyepoxy compound, and an aromatic vinyl copolymer containing as structural unit maleic anhydride and/or an alkyl maleate. This resin composition is excellent in thermal resistance and dimensional stability, which are important properties of a resin composition for practical use in lamination, and when used in lamination, exhibits favorable flow and curing properties so that it can be easily and economically processed under conventional laminating conditions. When used as a multilayer printed circuit board material, it is also characterized by excellent adhesion to a copper foil, particularly in bonding an inner circuit copper foil to the board.

Abstract: An arrangement for manufacturing a fibrous sheet in which fibers are crushed and dispersed to form a layer of substantially uniform thickness and width. The layer of crushed fibers is conveyed as a continuous belt-shaped sheet layer, and adhesive is sprayed onto the crushed fibers. The sheet layer is then heated and compressed after being impregnated with the adhesive.

Abstract: A method and apparatus is disclosed for bonding of dielectric circuit boa for microwave use, the bonding together of several circuit boards to form subassemblies and the bonding of subassemblies together. The finished circuit may include a bonded-in ground plate of copper wire cloth or the like and may include through-plate holes. The technique includes the build-up of thin films to provide strength, toughness and dimensional accuracy. Orthogonal positioning of directional stresses and cooling under pressure have a stabilizing effect. The bonding of copper or other conductive sheet or foil to the substrate is done without the use of a copper oxide or other coating and using only heat and pressure. An etched circuit in the copper sheet or foil, for example, is made flush with the finished surface of the board in the process.

Abstract: Interposed between the conductor and the helical or longitudinal wrapping of paper insulation is a layer of selfsetting, heat sealable emulsion having adhesive properties and which is inert, water soluble and free of metal. The emulsion is absorbed by the innermost lay of the paper and causes it to adhere to the next outer paper lay, while the outer portion of the paper which is not exposed to the saturated portion remains loosely formed around the conductor. Upon drying of the paper insulation, the solid portion of the emulsion remains as a film on the periphery of the conductor and the innermost surface of the paper.

Abstract: This invention relates to a laminated metal-based facing constructed in the manner that a metal sheet as a construction member and a facing veneer of natural wood as a facing member are formed by heating under pressure into one body with nonwoven cloth of nonbinder construction placed therebetween as a medium for an adhesive layer to thereby bond said metal sheet with said facing veneer firmly and to make the sheets thus laminated adapted for bending work, said cloth being impregnated with a thermoplastic resin modified phenol resin adhesive or elastomer modified phenol resin adhesive.

Abstract: Thermoplastic adhesive and coating compositions which comprise (A) about 1 to 99 percent by weight of thermoplastic segmented copolyester elastomer consisting essentially of a multiplicity of recurring short chain ester units and long chain ester units joined through ester linkages, said short chain ester units amounting to about 15 to 75 percent by weight of said copolyester and being derived from aromatic dicarboxylic acid such as terephthalic acid, or a mixture of terephthalic and isophthalic acids, and an organic diol such as butanediol, and said long chain ester units amounting to about 25 to 85 percent by weight of said copolyester and being derived from aromatic dicarboxylic acid such as terephthalic acid, or a mixture of terephthalic and isophthalic acids, and a long chain glycol such as polytetramethylene ether glycol, said copolyester having a melt index of less than about 150 and a melting point of at least about 125.degree.C.

Abstract: A decorative molding having its body and under surface formed of a thermoplastic material which is bondable dielectrically with compatible materials carries bonded to such under surface a longitudinally extending composite fabric tape of a width less than that of the molding, the tape having on its underside a heat reactive adhesive compatible with and bondable to materials with which the body itself is incompatible.

Abstract: A cured polyester resin product is obtained by curing a substrate which was treated with a liquid unsaturated polyester resin composition containing an ethylenically unsaturated monomer having at least one epoxy group and was covered with a saturated polyester resin film, the surface of the polyester film having been activated. The cured product has improved resistance to chemicals and weathering and the like.

Abstract: The invention relates to a composite structure comprising plural open-cell foam phases impregnated with a hardenable resin such that the cells of one phase are filled with the cured resin while the cells of another phase are coated but unfilled with the resin.

Abstract: A method for constructing a relief sculptured sound grill comprising the steps of soaking a strip of flexible material in a starch solution and thereafter securing the flexible material between a male and female mold member so that the mold members form the desired relief sculpture on the flexible material. The strip of material is then dried and paint is applied to the relief sculpture and dried thereby permanently forming the relief sculpture on the strip of material. A frame is then secured around the periphery of the strip of material and the mold members are removed so that a hardener may be applied to the entire strip of material. The strip of material with the attached frame is then dried thus completing the relief sculptured sound grill of the present invention.

Abstract: Disclosed is a method for making corrugated collimators for radiation imaging devices. Strips of lead foil are corrugated in a pair of gear-like members, and the corrugated strips are mounted between straight strips to build up a honeycomb-like collimator structure. Specific techniques for producing parallel channel and converging or diverging channel collimators are illustrated.

Abstract: In a system for making bonded belt loops, a layer of thermally activated adhesive material is provided on one side of a strip of interfacing material. The reverse side of a strip of belt loop material is engaged with the side of the strip of interfacing material opposite the adhesive layer. An endless belt is utilized to transport the strip of belt loop material and the strip of interfacing material along support structure and into engagement with a revolving .[.bonded.]. .Iadd.bonding .Iaddend.drum. Rotating knives are disposed on opposite sides of the support structure for trimming the strip of belt loop material to a predetermined width. Thereafter a folding apparatus is utilized to fold the opposite edges of the strip of belt loop material around the strip of interfacing material. The bonding drum includes heating apparatus and functions to activate the adhesive layer on the strip of interfacing material.