Abstract: A light-reflective decorative glittered article is made by coating a light reflective foil with a powdered resin, fixing the resin, cutting the coated foil into glitter flakes, flocking the flakes onto a curable adhesive applied on areas of a base material to be decorated, and curing the adhesive while concomitantly causing the resin on contacting flakes to become tacky Scattering and fall-off of the flakes during manufacture are reduced.

Abstract: Methods for gluing a pair of surfaces are disclosed including preparing a glue from a polymer in the form of a powder, the glue having a melting temperature of up to about 100.degree. C. and being curable by electromagnetic radiation, applying the powder in a dry state to at least one of the two surfaces, heating a region proximate to at least one of the surfaces whereby the powder melts but does not cure, subjecting that surface to electromagnetic radiation to initiate curing of the powder, and joining the two surfaces together prior to completion of curing whereby the two surfaces adhere to each other by means of the tackiness of the glue and are maintained together by the subsequently cured glue. Apparatus for gluing the two surfaces together are also discussed, as are glue compositions for use therein.

Abstract: A method of and apparatus for activating a ready-to-install heat activated adhesive for attaching a vehicle panel to a vehicle is disclosed which provides a "ready-to-install" panel assembly. The panel assembly includes first and second spaced apart surfaces, with the bead of heat activated adhesive provided on the second surface of the panel. The panel and bead are heated preferably by applying shortwave and longwave infrared radiation, with the shortwave infrared radiation being applied to an adhesive free side of the panel to heat the panel and, thereby, indirectly heat the bead of the heat activated adhesive. For example, where the window panel is such as a laminated windshield or side window or backlite comprising two glass sheets laminated with a polymer inner layer, such as plasticized polyvinyl butyral, or silicone or the like, it is preferable that the heat activation temperature of the adhesive be less than or equal to about 125.degree. C., more preferably less than or equal to about 115.degree. C.

Abstract: A method of utilizing microwave energy in the manufacture of disposable nonwoven absorbent articles such as diapers and feminine care products. More specifically, the traditional hot melt adhesives utilized in the production of disposable nonwoven absorbent articles are replaced by adhesives that are microwave sensitive, and which can be activated by microwave energy to provide strong bonds for the finished article.

Abstract: The hot-melt adhesive of the invention includesA) at least one polyurethane prepolymer ofa) at least one polyisocyanate, in particular, toluene diisocyanate and/or MDI,b) at least one polyalkylene glycol at a concentration of more than 10% by weight based on total hot-melt adhesive, in particular, polypropylene glycol,c) at least one polyester glycol, preferably of at least two polyester glycols having different glass transition temperature, andB) optional additives such asd) a resin, particularly a hydrocarbon resin, ande) a stabilizer, particularly toluenesulfonyl isocyanate.Preferably, the hot-melt adhesive has a melt viscosity ranging from 10 to 300 Pa.s at 130.degree. C. The PU pre-polymer has only one single Tg in the DSC diagram. The hot-melt adhesive is notable for its high creep resistance with similarly high initial and final strength.

Abstract: A process for preparing a sign that includes the steps of providing a sheet of material; defining on a surface of the sheet a series of image-bearig areas and non-image-bearing areas; treating the surface of the sheet with an essentially solvent-free composition comprising a colorant and a polymeric binder to selectively deposit the composition on the non-image-bearing areas of the surface of the sheet; and fusing the composition to create a continuous polymer film on the non-image-bearing areas.

Abstract: A vehicle body panel having a honeycomb sandwich structure in which a honeycomb core is sandwiched between a first and a second plate includes a subhoneycomb panel formed by adhering the first plate to one major surface of the honeycomb core beforehand. The subhoneycomb panel is pressed against the second plate which is constituted by a part of a structural panel of a vehicle body with the intermediary of an adhesive layer, the other major surface of the honeycomb core being adhered to the second plate. The connection of the subhoneycomb panel to the second plate is performed after the structural panel has been connected to a strength member of the vehicle body, e. g. after a washing stage. Such a vehicle body panel with a honeycomb sandwich structure is achievable without resorting to any substantial modification of an existing vehicle body assembly line.

Abstract: A panel assembly and method for manufacturing the panel assembly, especially adapted for use in vehicles, includes a panel of predetermined size and geometry wherein a surface of the panel to receive a gasket is primed using a material especially adapted to prepare the panel surface to bond with the gasket. The desired gasket profile is molded separately from the panel from a polymeric material. Following formation of the gasket, the panel is located thereon and pressed into intimate contact with the gasket for a prescribed period of time. The panel and attached panel are removed as an assembly. Additional or optional steps may be followed including preheating the panel and primed surface prior to bonding to shorten the cycle time and improve adhesion. Moreover, heat may be applied to the contact boundary between the panel and gasket substantially simultaneously with the application of pressure. The steps of heating and applying pressure may be repeated to insure proper adhesion.

Abstract: A syntactic structural foam product in flat sheet form or curved three-dimensional form adaptable to such uses as a light weight structural core for composite laminates, is made of a mixture of hollow ceramic microspheres and dry resin powder, of either thermosetting or a high-temperature thermoplastic resin, distributed in the interstices of the mass of microspheres for integration of the mixture into desired form upon heating and cooling. The dry resin powder in another embodiment of the invention includes unexpanded expandable powder which will expand into microballoons in the confined spaces in which they reside and effect a bonding relation with surrounding particles upon supply of heat to the mixture. The foam product is produced by thoroughly intermixing and depositing the mixture as a layer over a surface having a release agent thereover within a dimension defined region.

Abstract: An adhesive and sealing material contains a) at least one reactive prepolymer which is liquid at room temperature and b) at least one further component which is solid at room temperature, liquid at a slightly raised temperature and at least partially incompatible with the liquid prepolymer(s). Component b) is preferably liquid at a temperature of max. 50.degree. C.

Abstract: A prepress color proof can be prepared using suitable donor elements and an intermediate receiver element that has a roughened outer image receiving layer so that the color image is transferred with high image resolution. The intermediate receiver element can also have a cushioning layer beneath the outer image receiving layer that reduces the tendency for entrapped dirt particles to form minus density spot defects. In addition, a unique carrier plate can be used to carry the donor and intermediate receiver elements through laminating equipment. This carrier plate has a thermoplastic adhesive layer with sufficient tackiness to prevent irreversible dimensional change during lamination.

Abstract: Electrically conductive sheet material preforms useful in bonding of electronic components as well as in the formation of electronic circuits are disclosed. The preforms, which comprise a multiplicity of electrically conductive adhesive members, each being separated from each other by means of a non-electrically conductive adhesive, are particularly useful in the assembly of multi-chip modules and other electronic devices.

Abstract: A bonded assembly which includes a heating element in thermal contact with the adhesive component of the bonded assembly, such that the heating element can serve to thermally degrade the adhesive so as to allow disassembly, repair and servicing of the bonded assembly. The invention is particular suited for use in an abradable shroud assembly used in the fan section of a turbomachine, such as a high bypass turbofan engine. The abradable shroud assembly includes an abradable material bonded to the fan casing with an adhesive material having a known thermal degradation temperature. Placed in thermal contact with the adhesive layer is a heating element, such that the heating element is capable of heating the adhesive to a temperature above its thermal degradation temperature.

Abstract: A method for attaching a semiconductor wafer section to a lead free comprises a carrier having an outside surface and an adhesive coating the carrier. Prior to use, the structure can be placed onto spools for easy shipment and storage.

Abstract: An apparatus for thermally attaching includes a thermally conductive support body (36; 86) with an edge surface (38; 88), a heater cartridge (42), a pneumatically expandable elastomeric element (44-54; 92-102), pinch plates (64, 66; 112, 114) for holding the elastomeric element in place; and passages (60, 62; 108, 110) for pressurizing the heated elastomeric element into contact with an element (24, 26) to be thermally attached to a mounting surface (85).

Abstract: The hot-melt adhesive of the invention includesA) at least one polyurethane prepolymer ofa) at least one polyisocyanate, in particular, toluene diisocyanate and/or MDI,b) at least one polyalkylene glycol at a concentration of more than 10% by weight based on total hot-melt adhesive, in particular, polypropylene glycol,c) at least one polyester glycol, preferably of at least two polyester glycols having different glass transition temperature, andB) optional additives such asd) a resin, particularly a hydrocarbon resin, ande) a stabilizer, particularly toluenesulfonyl isocyanate.Preferably, the hot-melt adhesive has a melt viscosity ranging from 10 to 300 Pa.s at 130.degree. C. The PU prepolymer has only one single Tg in the DSC diagram. The hot-melt adhesive is notable for its high creep resistance with similarly high initial and final strength.

Abstract: In the manufacture of ceramic circuit boards having ceramic or metal support substrates, a bonding glass layer that is adherent both to the substrate material and to multilayer green tape compositions having circuitry printed thereon, is deposited and flowed onto the support substrate. The bonding glasses suitable for use with nickel plated metal substrates and green tape compositions containing forsterite-cordierite-type glasses are mixed oxides including calcium, zinc and boron as well as other oxides. These bonding glasses have a thermal coefficient of expansion that is larger than said metal substrate, and a flow temperature below that of said cordierite-type glasses.

Abstract: The subject matter of this invention relates to a method of making glass fiber mat reinforcement material with a thermoplastic adhesive powder. Fiberglass strands are chopped and randomly air dropped onto a Teflon.RTM. coated conveyor belt to form a loose mat. A water mist is then applied to the loose mat and transport belt, before a powdered adhesive is dispensed. Heat is applied to plasticize the adhesive and finally the adhesive is solidified by cooling. The adhesive will then release from the transport belt and is adhered to the material forming the fiberglass reinforcement mat.

Abstract: An apparatus for feeding/heat sealing cartons along the feed path of a cartoning line is provided. A conveyor moves the cartons past the heat sealing station where an elongated nozzle assembly forms a heated air stream directed against the carton flap and the side of the carton to activate the coating to form an adhesive. A bypass valve and duct is provided to interrupt the flow of heated air in the event that the carton does not clear the activation zone in a predetermined time. Strategically placed heat shields and coolant passages are provided to further isolate the conveyor from the heat. The nozzle includes a slotted outlet with an elongated bar closely spaced above to deflect the heated air stream when a carton is present for adhesive activation; said bar having a tapered fin to form a modified air foil along the trailing edge to divide, recombine and compact the stream when a carton is not present. The upper feed belts of the conveyor are adjustable to adapt to cartons of various heights.

Abstract: A direct wind coil winding head assembly for depositing coil windings directly onto a coil support mandrel, comprising wire feed means having an input and an output, the wire feed means adapted to receive a continuous length of wire at the input and to cause the wire to exit the output at a first rate, mandrel positioning means for dynamically positioning the coil support mandrel beneath the output and control means coupled to the wire feed means and the mandrel positioning means, the control means operable to cause the mandrel positioning means to dynamically position the coil support mandrel beneath the output such that the exiting wire is deposited onto the mandrel in a predetermined pattern, and further operable to control the wire feed means such that the first rate is substantially equal to a second rate of movement of the coil support mandrel relative to the output, whereby the wire is deposited onto the coil support mandrel with substantially no residual winding stresses.

Abstract: The surface of a polyimide molded article such as polyimide film is treated with a solution containing a basic compound, further treated with a solution containing a silane coupling agent and then subjected to a heat treatment. This greatly improves the adhesiveness of the polyimide molded article surface to the polyimide adhesive layer formed thereon. This invention can be applied to the production of substrates for flexible wiring boards having a polyimide film/polyimide adhesive/copper foil structure.

Abstract: A laminating machine for laminating layers of plastic film about an insert has cold feed rollers, a preheater and heated expeller rollers. The workpiece to be laminated is fed to the preheater by the feed rollers and is heated to a temperature just below the melting point of the adhesive on the plastic film. The heated workpiece is then fed to the hot expeller rollers which apply heat and pressure to finish melting the adhesive and squeeze any air bubbles out of the workpiece. Temperature controls assure that no melting and thus, no pre-lamination occurs at the preheater. The preheating step results in a laminating machine with high throughput of high quality laminations, even with inserts impervious to air.

Abstract: A mailing container having upper and lower plain paper layers padded with at least two layers of globular paper is made with feed and unwinding devices for upper and lower paper webs and an unwinding device for the padded webs. A device connects the paper webs with padded webs adjacent an edge of the mailing containers. A device cuts the mailing containers to a predetermined format. A station for globular paper includes at least one supply roll to be unwound from the upper paper web and a lower paper web. A reactivatable hot melt adhesive is applied along predetermined zones, on at least one of the globular paper webs and on at least one web of the upper and lower paper webs before the webs are brought together. The hot melt adhesive applied to the predetermined zones between the upper and lower paper web and/or between the globular paper webs causes these webs to be permanently joined.

Abstract: A method of coating the surface of semi-rigid porous materials such as open cell foam or fibrous compositions with a thermoplastic adhesive in powder form which will reactivate. The powdered adhesive in a size range of 0-600 microns will remain on the surface of such materials even when cell diameter of the foam or space between fibers is larger than adhesive particle size. High porosity is maintained in the coated product. First a thermoplastic adhesive in powder form is dispensed uniformly onto the surface of a carrier belt which is coated with a release agent and is moving continuously. The adhesive advances to a preheating station where the adhesive is plasticized and will adhere to the carrier belt to prevent movement, after which the foam or fibrous material is placed on the adhesive which is adhered to the belt. The adhesive and material advance to a second heating station where the adhesive is fully melted to allow the adhesive to bridge cells in the foam or space between fibers.

Abstract: A process for the production of a copper-clad laminate which is improved in dimensional accuracy and freedom from bow and twist and shows nearly the same values of dimensional accuracy, thermal expansion coefficient and elastic modulus in the length and width directions, the process using:a prepreg (I) comprising a glass cloth (I-1) having a thickness of 190.+-.20 .mu.m, a weight of 210.+-.20 g/m.sup.2, warp and weft counts of 35 to 38 yarns/25 mm and a warp and weft difference of 2 yarns or less in count, anda copper foil (II) having a ductility, measured in atmosphere at 180.degree. C. in length and width directions, of at least 10% when it is a 1/2 oz/Ft.sup.2 foil, at least 15% when it is a 1 oz/Ft.sup.2 foil and at least 20% when it is a 2 oz/Ft.sup.

Abstract: A structure and a technique for heating hot melt adhesive by means of microwaves, to place the hot melt adhesive in a tacky state in which it adheres to an object. A preferred structure according to the invention comprises an article of manufacture (e.g., a wall hook) having a mass of the hot melt adhesive and a susceptor thereon. The article, with the adhesive and susceptor thereon, can be subjected to microwaves for a predetermined period of time, to place the mass of adhesive in a tacky state which enables the article to be attached to an object (e.g., a wall). A special container for the article is placed with the article into a microwave oven as a unit, and removed as a unit from the oven. The container enables the article to be safely and efficiently attached to the object.

Abstract: For the production of a tight complex having an internal reinforcement or framework and more particularly intended for the production of aerostatic balloons, a nonwoven reinforcement (10) is formed from weft and warp threads arranged in the form of two superimposed layers. To each of the faces of said reinforcement and using a predetermined force is applied a covering film (16a,16b), after bringing it to its pasty melting point on a heating drum (30a,30b). The nonwoven character of the reinforcement makes it possible to preserve the seal of the covering films during complexing. Moreover, the formation of small loops or rings on the edges of the complex obtained in this way makes it possible to introduce connecting cables facilitating the taking up or absorption of stresses.

Abstract: A ribbon adhering apparatus for a photographic film cassette has a turntable, which has holders fixed circumferentially at a regular pitch. Slidable supporters are mounted on the turntable in correspondence to the respective holders, at positions inward therefrom. Initially in rotation of the turntable, a cassette half of a film cassette is set on an empty holder. Ribbon web is lapped on to support surfaces of supporters arranged adjacently. The web is cut between the supporters to separate ribbons. Sucked and held on the supporter, the ribbon is then heated to activate hot-melt adhesive agent. By advancing the supporter to a holder corresponding thereto, the ribbon is pressed against the cassette half via the adhesive agent. The supporter then stops holding the ribbon. After cooling the adhesive agent, the supporter is withdrawn from the holder, from which the cassette half is removed.

Abstract: A method of bonding first and second circuit boards includes applying a light-sensitive adhesive over the first electrodes on a first circuit board and the areas where the first electrodes are not formed, and drying the applied adhesive to form a light-sensitive adhesive layer having the light-sensitive adhesive layer exposed selectively to active rays of light and performing development to remove only the light-sensitive adhesive layer on the first electrodes, and then performing a heat treatment to impart bonding quality to the light-sensitive adhesive layer remaining between adjacent first electrodes, placing the first and second circuit boards one on top of the other and thermocompressing the two circuit boards to have the first electrodes connected electrically to the second electrodes to form a single circuit board; and performing a heat treatment and/or exposure to active rays of light on the formed single circuit board.

Abstract: Rapid production of thermoplastic sandwich structures containing fiber-reinforced or non-reinforced thermoplastic core, such as honeycomb, materials adhered to skins or facing sheets is accomplished by fusion bonding the skins or facing sheets to the core by means of thermoplastic film(s) heated to the melt temperature and applying sufficient pressure to fusion bond the skins or facing sheets to the core, followed, when necessary, by cooling the assembly to prevent overheating of the core and/or skins or facing sheets.

Abstract: Manufacture of an article incorporating a thermosetting-powder surface-coating includes bonding a component of the article to the coating by contacting the melted powder with the component before curing takes place, and maintaining it in contact through curing. In a glass architectural panel, an aluminium foil is bonded in this way to a polyester/triglycidyl-isocyanurate powder coating on the silane-primed back of the facing glass; the metal foil is backed by a plastics or rubber open-cell material to enhance resistance of the glass to impact, and also, together with the foil, resistance to thermal shock. The coating includes pigmentation to give the effect of colored glass, or is clear to allow the contact-surface of the metal to show through; further decorative effect is obtained by pigmentation variation in the coating and/or partial metallization of the glass back-surface.

Abstract: A method for rapidly bonding a small electronic component to a mating surface of a high surface energy substrate using an adhesive pad made from a substantially amorphous, solvent-free thermoplastic polymer.

Abstract: A method of fabricating a multi-layered, co-fired, ceramic-on-metal circuit board utilizes a bonding layer of glass. The glass has a coefficient of thermal expansion not greater than that of the metal base. The glass of the bonding layer has a softening point below that of the glass in the multi-layer ceramic so that the glass of the bonding layer flows and bonds to the metal to minimize the lateral shrinkage of the multi-layered ceramic.

Abstract: A ribbonizing apparatus and method for forming a fiber band from a plurality of fiber tows extending along respective fiber tow pathways. The ribbonizing apparatus includes an assembly for selectively heating at least a respective one of the plurality of fiber tows as the fiber tow extends along the fiber pathways. When not needed, the heat is removed from the fiber tow. A plurality of embodiments for accomplishing the method are contemplated.

Abstract: The invention discloses a composite material 1 comprising essentially a mixture of hydroexpandable powder and thermobonding powder, sandwiched between two flat solid supports, one at least of which is at least partially hydrosoluble.This material can be used in agriculture, medicine, surgery, in the hygiene field and in the cable, particularly electric cable, industry. In this application, when water penetrates into the cable, the at least partially hydrosoluble support or supports release the hydroexpandable powder which rapidly forms a pad preventing propagation of the water through the cable.

Abstract: A wrapper paper for pressure sensitive products bearing on one of its flat surfaces a layer of polyethylene and on the opposite of its flat surfaces a layer of a primer selected from the polyalkyleneimine class, at least portions of the opposite flat coated surfaces facing one another in overlapping relationship when the paper is wrapped about a product, the overlying areas of the wrapper paper being sealed to one another by heat means and the application of very low pressure to the overlapping portions.

Abstract: A consolidated structure with less than 6 percent void content is formed from a plurality of thermoplastic impregnated yarns traverse wound on a rotating mandrel by feeding the yarns under tension simultaneously from a source of supply to a traversing carriage as adjoining flat tapes. The tapes then move successively through a preheating section, a heated circular guide and a contact point heating source, all on the carriage, before being laid down in a predetermined path on the mandrel.

Abstract: A multiple layer sheet structure has oriented layers of nylon and EVOH. Additional layers may or may not be utilized, and may or may not be oriented. Where additional layers are used, one of the additional layers, on the exterior surface of the structure, is preferably heat sealable. The structure shows improved impact resistance, after retort processing, over similar structures not having oriented nylon and EVOH layers. In certain embodiments, retort processed pouches made from the packaging structures have improved stress crack resistance when dropped onto a hard surface.

Abstract: A laminating system includes a pair of pull rollers (18) for drawing laminating film (12) from supply rolls, over preheat rollers (30) and through a pair of heated laminating rollers (14). A motor (124) connected to a driver sprocket (128) drives a driven sprocket (132) connected to one of the pull rollers (18). A second sprocket (214) is connected to the pull roller (18) by a one-way bearing (220) and is coupled to a sprocket (210) attached to one of the lamination rollers (14). The ratios of the sprockets are set such that if the lamination roller (14) are rotating properly, the laminate product (112) drives them and the coupled pull roller sprocket (214) free-wheels. And, if the lamination rollers (14) slow down their rotational speed, the bearing (220) and the abutting second pull roller sprocket (214) engage, lock and drive the lamination roller sprocket (210) and lamination rollers (14).

Abstract: Manufacture of an article incorporating a thermosetting-powder surface-coating includes bonding a component to the article to the coating by contacting the melted powder with the component before curing takes place, and maintaining it in contact through curing. In a glass architectural panel, an aluminium foil is bonded in this way to a polyester/triglycidylisocyanurate powder coating on the silane-primed back of the facing glass; the metal foil is backed by a plastics or rubber open-cell material to enhance resistance of the glass to impact, and also, together with the foil, resistance to thermal shock. The coating includes pigmentation to give the effect of colored glass, or is clear to allow the contact-surface of the metal to show through; further decorative effect is obtained by pigmentation variation in the coating and/or partial metallization of the glass back-surface.

Abstract: A laminating system includes a pair of heated laminating rollers (14) for drawing laminating film (12) from supply rolls and preheat members (30) between the supply rolls and the laminating rollers. The preheat rollers are heated internally by a bonded electrical heating element, while the laminating rollers are heated by a separate bonded internal heating element. The system includes pull rollers (18) for drawing the laminated articles from the supply roll (10) across preheat rollers (30) and through laminating roll (14) with a blower system (20, 242) for cooling the articles.

Abstract: An improved disposable garment is manufactured using a moisture impermeable film which is preprinted with an adhesive that is nonblocking at temperatures up to about 110.degree. F. Film so coated can be rewound onto itself and later used with nonwoven material and absorbent pads to produce disposable garments. The preprinted adhesive is heat activated during production of the garments immediately prior to bonding to the nonwoven material and absorbent pads. Delays in manufacture due to clogging of adhesive and inconsistent amounts of adhesive are avoided and considerably less adhesive material is used per garment. Once the adhesive is heat activated and comes into contact with the absorbent pads and nonwoven material, compressing ensures a strong bond between the materials used in the garment.

Abstract: Apparatus and method for applying heat-sensitive adhesive tape, such as frontal diaper tape, of the type having a layer of heat sensitive adhesive material to a web moving at high speed, such as a web of water-resistant material designed for use as the outer layer of disposable diapers. The apparatus comprises a tape-feed wheel for preheating and feeding the tape to the apparatus from a supply of generally continuous tape, and a tape-applying wheel in rolling engagement with the web for applying tape fed to it from the tape-feed wheel to the web. The tape-applying wheel includes vacuum passageways for providing suction through a circumferential surface of the tape-applying wheel to hold the tape thereon, and a heating mechanism for heating the tape to an elevated temperature at which the heat-sensitive adhesive is tacky and for maintaining the tape at the elevated temperature until it is applied to the web.

Abstract: A laminating system includes a pair of heated laminating rollers (14, 110) for drawing laminating film (12, 114) from supply rolls and preheat members (30, 118) between the supply rolls and the laminating rollers. The preheat rollers are heated internally by a recirculating fluid system or by an electrical mechanism (212-220), while the laminating rollers are heated by a fluid system (70-82) or a separate electrical system. The system also includes pull rollers (18) for drawing the laminated articles from the laminating rollers and a blower system (20, 232) for cooling the articles.

Abstract: This invention relates to a process for manufacturing laminated safety glass.A first process comprises the steps of:(A) coating at least one side of a glass plate with a film-forming plastisol composed of an epoxy group containing vinyl chloride resin as an indispensable component;(B) heating said glass plate having a coating to form a gel plastisol layer on at least one side of said glass plate; and(C) laminating another glass plate thereon through the medium of said gel plastisol layer and heating the resulting laminate, thereby bonding said glass plates to each other.A second process comprises the steps of:(a) filling the gap between the surfaces of a plurality of glass plates with a film-forming plastisol composed of an epoxy group-containing vinyl chloride resin as an indispensable component; and(b) heating said plurality of glass plates containing said film-forming plastisol filled into the gap therebetween, thereby bonding said plurality of glass plates to each other.

Abstract: A reinforced film of a laminate construction is thermally adhered to an edge of a web of paper stock in preparation for forming a reinforced edge of a file folder. The film has two layers, each having different characteristics, where the bottom layer becomes thermally active as an adhesive at a temperature substantially lower than the activation temperature of the other layer. The film is applied by directly heating the top layer to a temperature which in turn heats the bottom layer to a temperature where it acts as an adhesive. The layers can include a printed surface intermediate the film which is visible through the top layer or the layers can include an appropriate pigment to color code the edge of the folder. The apparatus can be added to existing file folder machines to apply the film without the need for sophisticated controls to tie the apparatus to the operation of the file folder machine.

Abstract: An apparatus for selectively attaching strips of an encodable material bearing a heat activatable adhesive to a document or for removing the strips therefrom generally comprises a strip attachment assembly and a strip removal assembly. The attachment assembly includes a set of document feed rollers and strip feed rollers which deliver the documents and the strips to an alignment subassembly where the document and the strip are properly aligned. A cutter cuts the strip to match the length of the document and the aligned document and strip pass by a heater which heats the heat activatable adhesive. The strip secured to the document by the heat activatable adhesive is sealed thereto by a pair of sealing rollers. The strip removal assembly comprises a passageway having a heater extending along one side and an obstruction extending across a portion of the passageway.

Abstract: A wrapper to be wrapped around a stack of disc-like tablets includes a portion carrying a layer of heat-activatable adhesive, which is activated just prior to wrapping the wrapper around the stack to secure it in position on the stack. The heat activation is provided by a short, hot blast of air directed onto a surface of the wrapper opposite that on which the heat-activatable layer is located, whereby the applied heat must travel through a portion of the wrapper to reach the adhesive layer and activate it. The air blast is heated by heaters which include elongated heat exchangers having rectangular grooves or slots extending along the length of their outer surfaces, through which grooves the air blast is constrained to travel for efficient, rapid heating.

Abstract: Thermoformable barrier sheet includes a barrier film having low oxygen transmission, and a thermoformable plastic, especially a foamed or unfoamed polystyrene sheet bonded thereto. Bonding can be accomplished by corona bonding or by thermal bonding.

Abstract: Apparatus and method for applying heat-sensitive adhesive tape, such as frontal diaper tape, of the type having a layer of heat sensitive adhesive material to a web moving at high speed, such as a web of water-resistant material designed for use as the outer layer of disposable diapers. The apparatus comprises a tape-feed wheel for preheating and feeding the tape to the apparatus from a supply of generally continuous tape, and a tape-applying wheel in rolling engagement with the web for applying tape fed to it from the tape-feed wheel to the web. The tape-applying wheel includes vacuum passageways for providing suction through a circumferential surface of the tape-applying wheel to hold the tape thereon, and a heating mechanism for heating the tape to an elevated temperature at which the heat-sensitive adhesive is tacky and for maintaining the tape at the elevated temperature until it is applied to the web.