Abstract: This invention relates to paperboard composite structures with a glass-coated film. Such structures of this type, generally, improve the shelf life of refrigerated and other oxygen-sensitive products and provide a barrier to flavors and fragrances to maintain product quality.

Abstract: A pressure-sensitive adhesive construction repulpable in paper recycling operations, comprising a facestock which is repulpable; a dispersible pressure-sensitive adhesive comprising tacky emulsion polymers dispersible in water; and a nondispersible pressure-sensitive adhesive comprising tacky emulsion polymers not dispersible in water, wherein, on the facestock, the dispersible pressure-sensitive adhesive is closer to the facestock than the nondispersible pressure-sensitive adhesive, thereby improving both adhesive performance and recyclability.

Abstract: A method of electroconductive fastening of electroconductive materials in electrochemical devices, where a sheet of metal or a sheet of electrically conductive fibers is to have a second sheet joined thereto which can be of solid sheet metal, and where at least one tape with an adhesive layer thereon is placed on top of one of the sheets, with the adhesive layer facing the sheets, and the assembly is subjected to pressure, and the adhesive layer is activated, causing the sheets to fasten together in electroconductive contact, and wherein a second tape with an adhesive layer facing the sheets may be applied from the other side prior to pressure application.

Abstract: A composite structure is made by first furnishing a skin layer made of a composite material of quartz fibers embedded in an uncured cyanate ester-resin matrix. A transition layer of a first epoxy resin is applied to the skin layer. The skin structure including the skin layer and transition layer is cured at a first temperature and post cured at a second temperature greater than the first temperature. A bonding layer of a second epoxy resin is thereafter applied to the bonding surface of the transition layer, and a substrate is contacted to the exposed face of the bonding layer. The second epoxy resin is cured at a third temperature no greater than the first temperature.

Abstract: An aqueous adhesive composition is provided which comprises a water-soluble condensation polymer obtained by subjecting a specific copolymer having an alkoxyl group and a specific alkoxysilane to hydrolysis-condensation, and an aqueous medium containing the condensation polymer. This composition can firmly bond non-sulfur-curable elastomer materials to various adherends such as metals; this has been hitherto difficult. A high-grade adhesion and superior heat resistance and oil resistance can be attained. No organic solvent is contained, promising an environmental safety.

Abstract: A method for surface mounting electrical components to a substrate, such as a printed circuitboard, involves use of an anisotropically conductive adhesive or Z-Axis adhesive between facing conductive surface areas on the component and substrate. Pressure is applied to the conductive adhesive by a nonconducting adhesive that is first cured between oppositely facing nonconductive surface areas of the component and substrate. This fixes the thickness of each layer of the conductive adhesive at a dimension no greater than its design conductive thickness. In a first submethod, the nonconducting adhesive is a fast setting adhesive subjected to mechanical pressure only as it is assembled on the substrate prior to the subsequent curing of the conductive adhesive. In a second submethod, it is a high shrinkage adhesive that applies compressive force between the component and substrate as it cures and shrinks dimensionally while at a temperature below the subsequent curing temperature of the conductive adhesive.

Abstract: The present invention concerns novel methods for enhancing the mechanical performance of tissue adhesives and sealants which comprises employing a primer molecule in association with a tissue adhesive or sealant, wherein the primer molecule serves to enhance the strength of the interface between the tissue and the adhesive matrix. The primer molecules described herein function to interact with collagen present in the tissue, thereby altering its characteristics to make it more amenable to bonding with the adhesive matrix. Primer molecules may be applied to the tissue independently from the tissue adhesive or sealant or may be mixed with the tissue adhesive or sealant prior to application to the tissue.

Abstract: A non-environmentally hazardous, non-volatile adhesive promoter composition useful in promoting the cure and/or enhancing adhesion of adhesives and for use in combination with adhesive bond polymerization. The promoter composition is a combination of a fluid carrier that remains substantially present during the curing of an adhesive composition and an active component capable of promoting the cure and/or enhancing adhesion of the adhesive and being miscible in the fluid carrier.

Abstract: A composite cable has a reinforcing layer with conductors disposed on opposed planar surfaces. Dielectric film layers electrically separate the conductors on the planar reinforcing layer from respective layers of additional conductors. The flexible cable is manufactured by laminating a layer of dielectric film and a layer of electrically conductive material onto both sides of a double clad core which provides a strain relief reinforcement for the cable.

Abstract: An improvement is proposed in the method for adhesively bonding a decorative overlay film of a plastic resin to the surface of an acrylic resin board with a hot-melt adhesive, by which the overlaid acrylic resin board can be imparted with greatly improved stability of overlaying lamination as well as good machining workability of the board. The improved method comprises the steps of: (a) demoisturizing the acrylic resin board by heating at 60-90.degree. C. for at least 2 hours; (b) forming a layer of a hot-melt adhesive on at least either one of the resin board and the overlay film; (c) laminating the resin board and the overlay film with the adhesive layer therebetween to obtain a laminate by passing between a pair of laminating rollers while the surfaces to be brought into contact with each other are kept at an elevated temperature; and (d) subjecting the laminate to an aging treatment by heating at 30-60.degree. C. for at least 1 hour.

Abstract: A method of bookbinding comprising the steps of a) applying a film comprising at least one hot melt polyamide at an application temperature of between about 175.degree. C. and about 190.degree. C. to the backbone of a book block said film having a tensile strength greater than about 400 psi and a Young's modulus of less than about 12,000 psi and b) covering said book block having said film of polyamide with a book cover having a portion thereof in substantially parallel relation to said film.

Abstract: The invention is an adhesive system for applying wrap around labels to containers. The system comprises a hotmelt pick-up adhesive which is active at the temperature which the label is applied and loses its bonding ability after the adhesive sets and an overlap adhesive for bonding the label overlap. At its application temperature, the pick-up adhesive has significantly higher adhesiveness, measured at its application temperature than at its conventional storage temperature. In addition, the adhesive preferably has a greater affinity for the label than for the container bearing the label. Consequently, the label can be easily removed from the hollow body without leaving residues of adhesive. If, nevertheless, a residual adhesive should remain on the hollow body, it can be dissolved by an alkaline solution.

Abstract: The invention discloses a method of preventing transmission of viral pathogens between a source of viral pathogens and a target of said viral pathogens comprising positioning between said source and said target a microporous membrane material comprising (1) a thermoplastic polymer or polytetrafluoroethylene and (2) a water- and oil-repellent fluorochemical compound which provides said membrane with oleophobic, hydrophobic and viral barrier properties.

Abstract: The invention is a process for bonding two substrates together which comprises contacting an adhesive composition comprising a polyurethane prepolymer comprising the reaction product of: A) a polyisocyanate; B) one or more compounds or polymers having isocyanate-reactive moieties; C) a dispersion triol containing from about 10 to about 60 percent by weight based on the dispersion of particles of an organic polymer which is nonreactive with the polyols and polyisocyanates having a particle size of from about 5 to about 50 microns; wherein the prepolymer has a free isocyanate content of from about 0.8 to about 2.2 percent; with at least one of the substrates and contacting the substrates together along the portion of the substrate(s) to which the adhesive has been applied before the adhesive applied cures and allowing the adhesive to cure and bond the substrates together.

Abstract: Disclosed is the use of a removable passivating layer in multichip packaging and CUBE applications. The process takes advantage of the fact that various metal ions will react with the carboxylic acid groups of various polyimide precursors. The polyimide will cure at a first temperature and the system may be manipulated and tested. At a later point, the polyimide is subjected to a second, higher temperature in order to decompose or completely destroy the polyimide.

Abstract: The invention is a method of gluing wood using a reactive two component thermosetting adhesive such as a phenol-resorcinol-formaldehyde (PRF) condensation product. One component is first coated on one of the members to be bonded. The second component is then spread directly on top of the first in a manner to minimize mixing; e.g., by spraying. When the mating member to be bonded is placed against the adhesive coated first member and pressure is applied the components are mixed. This begins the curing reaction between the components so that a thermosetting adhesive bond is formed. With selected adhesives very rapid curing times are possible. A preferred adhesive has a first component comprising a PRF resin mixed with a methylene group donor hardener such as paraformaldehyde. The second part is also a PRF resin. No hardener is present in the second part. Instead an oxygen and nitrogen containing heterocycle is used as an accelerator. Morpholine is a preferred compound.

Abstract: The invention discloses a method of preventing transmission of viral pathogens between a source of viral pathogens and a target of said viral pathogens comprising positioning between said source and said target a microporous membrane material comprising (1) a thermoplastic polymer or polytetrafluoroethylene and (2) a water- and oil-repellent fluorochemical compound which provides said membrane with oleophobic, hydrophobic and viral barrier properties.

Abstract: Disclosed is a method of bonding integrated circuit chips to lead frames where the leads are later soldered. A solution of an adhesive polyimide is used. The polyimide is the reaction product of an aromatic dianhydride and a mixture of an aromatic diamine and an aliphatic diamine.

Abstract: A method for the preparation of ink jet receptor elements that contain receptor layers on difficult to coat substrates is disclosed. An element that contains, in order, a carrier sheet, a receptor layer, and an adhesive layer is laminated to the substrate and the carrier sheet removed. Difficult to coat substrates include deformable substrates and porous substrates.

Abstract: A method for constructing a laminate comprising two layers, including an acrylic homopolymer layer and a microporous PTFE layer wherein the acrylic layer is a felt and is pretreated by immersion into an adhesive solution and introduced to the PTFE layer and subjected to heat and pressure to form a laminate useful as a filtration material. A laminate useful as a filtration material is formed by the immersion process.