Abstract: A method of forming a laminate core of a multiplicity of magnetic plates in a stack, including the steps of assembling the plates and applying a strip of adhesive to a surface of the stack. The adhesive is allowed to dry to hold the plates assembled during subsequent steps, e.g., coating with dry particles of thermoset resin which are subsequently cured to form an integral layer to secure the plates in a substantially rigid unit. In preferred embodiments, the adhesive decomposes at the temperature of curing of the thermoset resin layer.

Abstract: A method of packaging first and second kneadable plastic masses that react when mixed includes(a) providing the masses in lengthwise elongated strip form and traveling the masses lengthwise in parallel relation but with a predetermined gap therebetween,(b) providing an elongated first plastic film that defines a barrier and traveling that film in the direction of travel of the masses,(c) and urging the traveling film toward the traveling masses to contact same and to locate the barrier in the gap.The film may have side sections simultaneously urged against surfaces of the traveling masses; a second traveling film beneath the masses may be contacted by the barrier; and end portions of the first film may be heat sealed to the second film to encapsulate the masses.

Abstract: A two component epoxy resin and curing means therefor in mastic compositions, shelf stable, in close side by side relationship, sharing the same environment, capable of ambient temperature curing, to a solid state when mixed in the correct proportions, such stability provided by low vapor pressure active ingredients, and the absence of reactive vapors in the curing means.

Abstract: A method of treating material in a vessel includes the steps of vibrating the vessel to produce oscillatory displacement of the vessel wall; and transmitting such displacement to material in the vessel. The vessel may comprise a tube having a tuned cavity in which material is treated; or the vessel may contain relatively movable solid bodies to which the vibration is transmitted to grind or emulsify material flowing between the bodies; or, the vessel may contain a pumping member to which vibration is transmitted to cause material pumping displacement of that member.

Abstract: Improvements in chromatographic column construction, resulting in facilitating packing techniques, and preparation. Use of improved column in analytical and preparative chromatographic applications produces higher efficiencies, lower solvent pressures, faster throughput, and improved resolution of components.Column construction is such, that mechanical energy can be applied longitudinally to the column outer surface, to produce standing waves or controlled vibrations in the packing. The applied energy is in the preferred form of sonic or ultrasonic vibrations.

Abstract: A thin barrier is provided between two reactive masses, as during extrusion thereof, to block their reaction until such time as they are intermixed, as by kneading.

Abstract: A two component epoxy resin and curing means therefor in mastic compositions, shelf stable, in close side by side relationship, sharing the same environment, capable of ambient temperature curing, to a solid state when mixed in the correct proportions, such stability provided by low vapor pressure active ingredients, and the absence of reactive vapors in the curing means.

Abstract: A cohesive, non-flowable, plastic mass which is difficult to handle in bulk form is subjected to removal from a container and guided flow into a screw conveyor, compression in the conveyor, and controlled heat input and withdrawal while transported by the conveyor to facilitate ultimate extrusion.

Abstract: A thin barrier is provided between two reactive masses, as during extrusion thereof, to block their reaction until such time as they are intermixed, as by kneading.