Abstract: A method and apparatus for the formation of polymer fibrids. These fibrids are produced by the mixing of superheated water and melted polymer and by passing this mixture through a bank of capillary tubes. The mixture becomes elongated in the capillary tubes and exits those tubes through a nozzle into an expansion chamber where they form fibrids. The fibrids are cooled by the evaporation of liquid water after expansion.

Abstract: A paperboard carton constructed from an integral paperboard blank has an improved pull tab tear strip opening. The carton contains at least two layers of paperboard in the area where the pull tab tear strip opening feature is located. The pull tab tear strip is an integral part of the outer layer. The pull tab tear strip is bounded along one elongate side by a cut line of weakness having a plurality of through cuts and along a second elongate side by a partial cut score line which facilitates ply separation of the outer panel adjacent this side during carton opening.

Abstract: Provided is a strong, flexible filter element comprising a wet laid non-woven element of glass fibers, synthetic short fibers, and polymer fibrids having a softening point below the softening point of the short fibers. In the filter element, the glass fibers are bound to the synthetic short fibers, e.g., aromatic polyamide short fibers such as poly(m-phenylene isophthalamide) short fibers, by the polymer fibrids, e.g., cellulose acetate fibrids, which act as a binder. The filter element exhibits excellent chemical resistance and a usefulness in removing particulates from gases at temperatures below 400.degree. F.

Abstract: An apparatus for surface heating of an object, such as a food object, in an oven by microwave energy which requires only a microwave interactive heater material and a support for it that is designed to obtain higher temperatures via a contact wall formed of stacked layers. In particular, in accordance with various embodiments, a primary panel defines a contact surface against which an object is disposed, and a secondary panel which is coextensive in area with at least an object heating portion of the primary panel is disposed adjacent to the primary panel at an opposite side thereof from the contact surface. Each of the primary panel and secondary panel is formed of a layer of microwave interactive heater material that is applied to a microwave transparent support material, such as paperboard.

Abstract: The present invention provides a multilayer fibrous material suitable for use as an EMI and RFI shielding packaging material and a process for producing the same comprising first and second outer layers formed of paper or paperboard and an inner layer formed of paper or paperboard containing conductive carbon. The invention also provides a method of providing antistatic properties to the packaging material.

Abstract: A present invention provides a microwave interactive laminate and a process for brush deactivation of such a laminate. A film, coated with a microwave interactive layer is provided. A desired portion of the microwave interactive layer is coated with a mask layer and the entire assembly is then exposed to abrasion means. The coated and un-coated areas are subjected to the application of mechanical forces to form discontinuities in the microwave interactive layer. That portion of the microwave interactive layer that was coated remains interactive with microwave radiation and is a heating area while the un-coated area is deactivated.

Abstract: A carton blank and a method for folding and gluing it into a reclosable carton. Corner post flaps are releasably adhered to front end flaps to permit release of the corner post flaps from the front end flaps when the top of the top opening container is initially raised to provide access to the contents.

Abstract: A system for detecting a splice in a single facial tissue in a stack of facial tissues wherein a detector agent is applied at the location of the splice, the facial tissue is folded so that the detector agent is located at least one side edge thereof, and detecting the existence of the detector agent at the side edge to actuate a reject mechanism.

Abstract: A strong, highly absorbent hard finished nonwoven toweling fabric consisting of wood pulp and textile fibers free from added binders is prepared by forming a wet-laid web of a blend of fibers containing 50 to 75 weight percent wood pulp and 25 to 50 weight percent staple length synthetic fibers and subjecting the fibers in the wet-laid web to hydroentanglement. The fabric may be apertured or essentially nonapertured and may be made water repellant. The fabric may be used in medical and surgical application, household cloths, food service wipes, industrial machinery wipes and the like.

Abstract: A translucent nonwoven fabric composite, suitable for use as a housewrap, is disclosed. The composite comprises a meltblown fabric layer laminated to a reinforcing fabric layer and may include tacking strips. The composite may be prepared by calendering a meltblown fabric and a reinforcing fabric together in a nip equipped with a resilient roll.

Abstract: Apparatus for forming a bulk package and including bottom tray placement means for placing a bottom tray on a support, stacking means for stacking layers of objects on the bottom tray, top cap positioning means for positioning a top cap over the upper-most layer of stacked objects, and post member positioning means for positioning post members at preselected spaced locations between the bottom tray and top cap.

Abstract: A disposable microwave browning and crisping package having a flat substrate and a microwave reactive layer affixed over one surface of said substrate, the microwave interactive layer, when subjected to microwave energy, converting microwave energy to heat in an amount sufficient to brown and crisp food in heat transfer relationship has at least one aperture to allow gases and vapors generated from cooking foods such as large pie crusts to traverse said laminate thereby allowing the food product to remain in close proximity to the reactive heater resulting in improved browning and crisping.

Abstract: Paper employed in an ion deposition printing process can be made antistatic by incorporating into the paper a composition comprising a water-soluble electrolytic salt, such as sodium sulfate, and a water-miscible organic solvent having a high boiling point, such as glycerine. Being antistatic, the paper does not acquire stray charges of static electricity that interfere with the printing process.

Abstract: A packaging material and a method of forming the packaging material into a flexible, disposable food container adapted to contain and maintain food in a fresh and sanitary condition, and to ship, display, heat and brown, and serve the food is disclosed. The method includes forming patches of microwave interactive material on a web of plastic and laminating the web of plastic to one side of a web of structural stock material to form a composite web; the microwave interactive material is sandwiched between the web of plastic and the web of structural stock material. Sealant is applied to portions of the plastic layer in registry with the patches of microwave interactive material to seal ends of the composite web. Printed graphics are applied to portions of the structural stock material layer in registry with the patches of microwave interactive material and the sealant.

Abstract: Superabsorbent synthetic fibers are prepared by a method wherein segments of synthetic fibers are coated with a solution of (a) a hydrophilic, uncomplexed polymer and (b) a complexing agent, and the coated fibers are fluff or flash dried causing the polymer to complex and to form a superabsorbent coating on the synthetic fibers in situ.

Abstract: Disclosed are high loft nonwoven fabric composites, suitable for use as coverstock in absorbent personal care articles, that are composed of at least two carded webs of bicomponent thermoplastic resin fibers, wherein the fibers making up at least one web are at least in part flat-crimped bicomponent fibers. Also disclosed is a method of making such laminates by a process that involves thru-air bonding.

Abstract: A patterned microwave interactive element and laminate including a patterned microwave interactive element for use in forming food packaging materials that may be employed to store and subsequently cook the food stored therein are provided. The pattern of the microwave interactive element is selected to focus the heat generated to predetermined areas of the food contained in the packaging. Areas where the microwave interactive element has been deactivated may be formed by a variety of methods, such as by demetallization, by the application of an inactivating chemical, by mechanical means and the like, to create a preselected pattern of inactive areas relative to the active areas, thereby controlling the temperatures produced in different sections of the packaging material. Optimum browning and/or crisping of the microwave heated food product may be achieved by selecting a pattern of microwave interactive and inactive areas tailored to specific food products.

Abstract: A nonwoven composite material comprising a meltblown fabric layer of a thermoplastic polymer sandwiched between two prebonded, spunbonded reinforcing fabric layers of a thermoplastic polymer, all continuously-bonded together to form a composite material. The preferred thermoplastic polymer for both the meltblown and spunbonded layers is polypropylene. The nonwoven composite material contains a minimal number of loose fibers, is highly resistant to the penetration of liquids and would also be expected to exhibit good abrasion resistance, while maintaining tear resistance and softness comparable to non-prebonded materials characterized by discrete bonding patterns. The nonwoven composite material is especially useful as a sterilization wrap for surgical and other health care items.

Abstract: A folded sheet product having two terminal portions with free edges midway of the paper product and having a substantially uniform thickness across the full extent thereof when folded.

Abstract: Release sheets formed on paper, nonwoven fabric, polymeric film, or extrusion-coated paper substrates are disclosed. The release sheets have a low polar surface energy hydrocarbon undercoating of low elastic modulus interposed between the substrate and a silicone release coating.