Abstract: Gaskets comprising at least one homogeneous linear ethylene polymer are disclosed. The gaskets are particularly useful for sealing beverage containers and do not contribute to taste and/or odor of the packaged product, which is especially useful in food-stuff applications.

Abstract: A closure cap includes a top wall with recesses therein wherein the recesses have an unpleasant tasting material therein to discourage infants and small children from placing the closure caps in their mouths and biting down on the caps.

Abstract: In a thermoplastic closure unit for a container (1) for the handling and storage of flowable products comprising a substantially tubular pouring part (3) and a closure part (5) sealing the opening of the pouring part, a coating (12,19) is applied to the pouring part and the closure part for protecting the product. Such coatings can be applied to the inside, to the outside or to both sides and can e.g. be provided for protecting the product against the action of oxygen.

Abstract: A disposable cap for a fluid container which is constructed totally of sheet material formed of a pair of thin sheets of wax with a thin base sheet being sandwiched therebetween. The size of the sheets of wax are substantially identical and are significantly greater than the periphery of the base sheet forming a peripheral area totally of wax. The thin base sheet is to cover the access opening of a container with this peripheral area to be deformed and pressed tightly against the sidewall of the container forming a temporary closure cap for the access opening of a fluid container.

Abstract: A plastic closure including a base wall having an inner surface, a peripheral skirt extending from the base wall and a liner on the inner surface of the base wall. The liner includes (a) an ethylene vinyl acetate composition, (b) a primary fatty acid amide and (c) a bis-fatty acid amide. Preferably the primary fatty acid amide comprises an oleamide or an erucamide, and the bis-fatty acid amide comprises ethylene-bis-stearamide.

Abstract: A screw cap of thermoplastic material, particularly intended for the closure of glass containers used in the food industry, is provided on the outer surface of its horizontal end wall (1) with a thin covering layer (13) of a composite laminated material which is adapted to form a barrier against the passage of gases through the wall. This composite, laminated material is constituted by a disc (13a) incorporated in the outer face of the horizontal end wall (1) of the cap during the injection moulding of the cap. The disc (13a) is permanently bonded to the horizontal end wall (1) of the cap and to a downwardly-curved wall (10) connecting the peripheral edge of the horizontal end wall (1) to a rounded annular shoulder (11) provided at the top of the cylindrical skirt (2) of the cap.

Abstract: A thermoset polymer coating with an effective ink-releasing amount of a liquid, organic soluble dimethyl- or methyl/alkyl organopolysiloxane for use in a closure assembly, the assembly including a metal closure with a top and depending skirt, the thermoset polymer coating being applied to the inside closure top and printed with ink indicia, a polyvinyl acetate coating applied over the ink, and the ink indicia being removed on the polyvinyl acetate-coated liner by the customer for promotional purposes such as for prizes, etc.

Abstract: An improved composite closure is described which has a cover portion which is at least partially plastic and a molded plastic ring portion. The molded ring also permits the cover to be inserted from the top of the ring rather than just upwardly over the ring threads and permits a plastic to plastic engagement or attachment of cover and ring.

Abstract: An improved method for reducing opening torques of caps and lids on containers, in particular containers for food and beverages, which comprises covering the sliding surface of the said caps or lids and/or of the finish of the containers prior to closure with an appropriate lubricant. In a preferred embodiment the lubricant comprises a lubricating agent and an emulsifier.

Abstract: Laminates prepared by co-curing terpolymers of tetrafluoroethylene, perfluoromethyl perfluorovinylether, and a halogen-containing cure site monomer with a second peroxide-curable elastomer. The laminates can be bonded to a variety of substrates.

Abstract: The present invention relates to a glue-free method for sealing closures to paperboard food containers, and also to the novel closures for such method. The present invention is particularly applicable to containers for moisture sensitive food items such as salt, and is characterized in the use of a thermoplastic vinyl chloride ethylene copolymer which functions both to provide a heat seal and effective resistance to moisture vapor transmission. The copolymer has sufficient slip to permit handling of the closures in automatic forming and heat sealing equipment.

Abstract: In the sealing of a glass container containing a product such as a food product by means of a cover comprising a metal foil having on one surface thereof a sealant layer of a thermoplastic resin, the opening end of the container is preheated, and the cover is placed on the opening end, after which the cover is pressed against the opening end successively by a heating plate and a separate pressing plate. By this process, a positive seal and a high sealing process efficiency are obtained even when the container content is a product such as a heated liquid food product and even when the rim surface of the opening end of the container has some projecting irregularities.

Abstract: A method for sealing a rim-like opening in a glass container is described. The surface of the opening is treated with tin and/or titanium oxide precursors and with or without one or more of the groups consisting of fluorides, sulfur oxides and sulfur oxide precursors and then overcoated with a chromium III organic metallic complex. A membrane comprising a thermoplastic film is pressed onto the coated opening surface and heated to cause glass-plastic adhesion, forming a closure. The coating steps may be applied to glass containers immediately after forming and annealing as appropriate, or may be applied to glass containers taken from storage.

Abstract: Disclosed is a method for making articles comprised of a body portion of an elastomeric material having a liner of an inert material covering at least a portion of the peripheral surface of said body portion including the steps of bonding a layer of elastomeric material to one face of a layer of the inert material, positioning the bonded layers in a mold cavity with the layer of inert material contacting at least a portion of the surface of a mold cavity, adding additional amounts of uncured elastomeric material to the mold cavity and vulcanizing the elastomeric materials. Also disclosed herein is a system and apparatus for making molded articles as well as the molded articles produced thereby.

Abstract: This invention relates to a method of sealing a container mouth, and especially the mouth of a glass container, and the glass container so sealed. The method involves oxidizing the container rim portion, applying a first annular thin coating of an organo-functional silane compound and then a second annular thin coating of an ethylene acrylic acid copolymer over the first coating on the rim portion. A thin imperforate membrane such as aluminum foil having a thermoplastic sealing material such as Surlyn copolymer over its sealing surface is sealed to the container rim portion with heat and pressure.

Abstract: A method for sealing a rim-like opening in a glass container is described. The surface of the opening is treated with tin and/or titanium oxide precursors and with or without one or more of the groups consisting of fluorides, sulfur oxides and sulfur oxide precursors and then overcoated with a chromium III organic metallic complex. A membrane comprising a thermoplastic film is pressed onto the coated opening surface and heated to cause glass-plastic adhesion, forming a closure. The coating steps may be applied to glass containers immediately after forming and annealing as appropriate, or may be applied to glass containers taken from storage.

Abstract: A metal cap having a primer layer thereon which has a thermal adhesiveness with respect to a lining layer and wherein part of the lining at the bottom of a cap is thermally adhesively fixed to the primer layer.A method of manufacturing a metal cap including steps of applying a primer to the cap which has a thermal adhesiveness with respect to a lining layer and heating only a portion of the bottom of the cap to cause only part of the lining to become affixed to the primer.

Abstract: A method for preparing a glass container, and for sealing a glass mouth of a container and the seal are described. The sealing surface, or finish, of the container is subjected to a hot end treatment after forming and before annealing to enhance adhesion between the container finish and a thermoplastic membrane seal. The container is next annealed and after annealing is subjected to a cold end treatment in which the exterior container surface is coated with a material which enhances the lubricity and increases the abrasion and scratch resistance of the container. The container finish only is then subjected to a brief heat treatment sufficient to remove any lubricity enhancing material from the finish. A membrane comprising a thermoplastic film is pressed onto the container finish and heated causing glass-plastic adhesion and forming a closure.

Abstract: This invention discloses stable water-based thermosettable coating compositions particularly adapted for the direct roll coating of substrates. The composition comprises (1) an aqueous solution or colloidal solution of a volatile amine or ammonia salt of a high molecular weight carboxylic acid-containing acrylic copolymer, (2) a carboxylic acid-containing acrylic oligomer in the solution, and (3) an aqueous dispersion or solution of a crosslinker; the volatile aqueous phase being by volume 70 to 95% water and 5 to 30% organic solvents, the solids content 15 to 70% by weight and the viscosity between 25 and 150 seconds measured in the number 4 Ford cup.

Abstract: An improved liner element for a closure cap which is adapted to be disposed within the closure cap and bonded to the interior end surface thereof. The liner element is characterized by having a laminated structure comprising a backing layer or cushion layer of surface-sorbent material, such as fabric, a relatively thin sheet of paper or comparable surface-sorbent cellulosic or paper-like membrane or substrate, having an inner face which is surface-bonded to the interior end surface of the closure and having an outer face which is surface-bonded to a barrier layer of pliant polymeric material. The barrier layer of polymeric material is selected to possess the properties of being essentially impermeable to water vapor and gaseous transmission so as to be suitable for closure caps utilized in conjunction with containers for packaging comestible products and carbonated or non-carbonated, alcoholic and non-alcoholic beverages.

Abstract: Improved septa for chromatographic apparatus and procedures comprise disc or cylindrical bodies of silicone rubber with a coating of polyimide which may in turn be covered by a coating of Teflon.

Abstract: A method for sealing a rim-like opening in a glass container is described. The surface of the opening is treated with tin and/or titanium oxide precursors and with or without one or more of the groups consisting of fluorides, sulfur oxides and sulfur oxide precursors and then overcoated with a chromium III organic metallic complex. A membrane comprising a thermoplastic film is pressed onto the coated opening surface and heated to cause glass-plastic adhesion, forming a closure. The coating steps may be applied to glass containers immediately after forming and annealing as appropriate, or may be applied to glass containers taken from storage.