Abstract: Improved polymer additive concentrate compositions used in nylon film layers. The improved concentrate comprises a carrier of a nylon polymer composition and the additive material. Preferred nylons includes nylon 6; nylon 6,66; nylon 6,6; and combinations thereof. Preferred additives are antiblock agents and slip agents. The film layers may comprise a single layer nylon film, or may be part of a multiple layer composition. The films are susceptible to being used in making packaging.

Abstract: A detector for a can making apparatus applying a compound to a seaming flange of a can end, the detector for detecting the presence of said compound on said seaming flange of said can end.

Abstract: A three layer oriented film, packages made from the oriented films, and packaging methods using the oriented film. Each layer of the film is molecularly oriented. A first outer layer of the film is nylon 6. The other outer layer of the film is a blend of 50% to 100% linear low density polyethylene and 50% to 0% low density polyethylene. An intermediate adhesive polymer layer has a high fraction of linear low density polyethylene.

Abstract: A tool pack includes a cradle (30) that defines a space (36) into which ironing die assemblies (80, 100, 106) and a plurality of lubricating rings (78, 102, 104) each associated with an ironing ring are mounted. A lubricant manifold (152) is configured so that the lubricating rings can be manipulated into position to provide communication between the rings and the manifold. The cradle has a pair of spaced locator bars (52) exposed in the space and a cover (40) is pivotally mounted on the cradle to close an access opening and is locked by a clamp mechanism (44). The cover has deflectable metal members (62) that engage the ironing assemblies and lubricating rings and apply pressure to force the assemblies into engagement with the locator bars and also provide sealing engagement between the manifold and the lubricating rings.

Abstract: Molecularly oriented films are produced which comprise a layer containing a blend of EVOH and nylon. The films exhibit a desirable balance of oxygen barrier and strength properties, and are ideally suited for many packaging applications.

Abstract: A full open end includes a score line that defines a removable panel which has a tab and the removable panel secured thereto by an integral rivet. The end has anti-rotation members between the tab to prevent rotation of the tab about the rivet.

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 polymeric structure having an oxygen barrier layer (e.g., ethylene-vinyl alcohol copolymer) is heated in the presence of moisture to improve its resistance to oxygen and moisture penetration. A drying agent is incorporated in the multi-layer structure to control the rate of water penetration to, and the amount of water in, the barrier layer.

Abstract: An improved package and method of packaging, including an oil-containing product, includes a multiple layer packaging sheet material which has reduced sensitivity to cockling. The multiple layer sheet material includes a layer which is susceptible to being swelled when in contact with oil, giving a cockled appearance. With reference to the package structure, the sheet material also includes a layer which impedes penetration of oil, the impeding layer being between the oil-containing product and the layer which is susceptible to being swelled when in contact with oil. The impeding layer comprises polypropylene.

Abstract: A buckle resistant end for containers which is formed with an inwardly bowed countersink wall, a countersink groove defined by two unequal radii and a central panel wall stretched taut by accentuated doming.

Abstract: The invention discloses a multiple layer film useful in packaging, and the packages made therefrom. A first layer of the film is a material containing an ester group, a polycarbonate or a polyether block amide copolymer. A second layer of the film is a sealant, preferably polypropylene polymer blended with an elastomeric styrene ethylene butylene styrene copolymer. A third functionally adhesive layer is between the first and second layers. The composition of the third adhesive layer is typically either a polypropylene modified with a carboxy group such as an organic acid or anhydride or a styrene ethylene butylene styrene copolymer.

Abstract: A multiwalled plastic container and method for making the same is disclosed having a barrier liner and an outer wall providing structural support for the liner. The container provides increased protection against separation of the liner and structural wall especially at the rim defining the opening of the container. This is accomplished by a wrap around liner lip construction wherein the liner extends from the inside surface of the structural wall around the top rim surface of the wall and downwardly depends therefrom along the outer surface of the structural wall. To downwardly depending leg of the liner lip is recessed within the outer wall surface providing adding protection against liner separation.

Abstract: A buckle resistant end for containers which is formed with an inwardly bowed countersink wall, a countersink groove defined by two unequal radii and a central panel wall stretched taut by accentuated doming.

Abstract: Low acid heat-sensitive foodstuffs, such as low acid heat-sensitive vegetables and cereal grain products, are thermally processed in the presence of a mixture of an acid and its lactones, preferably an aldonic acid with its lactones, the acid of which makes possible a considerably reduced commercial sterilizing parameter whereby more of the flavor, color, or texture of the foodstuff is retained, and is closer to that of the freshly harvested home-cooked product, compared to the foodstuff processed at a more severe parameter when the acid is not employed. The type and level of the acid employed and its presence with its lactones results in a thermally processed foodstuff which does not have an objectionable acid taste. The preferred mixture is gluconic acid with its lactones, glucono-delta lactone and glucono-gamma lactone, provided to the foodstuff by combining it with a precursor of gluconic acid, preferably glucono-delta lactone.

Abstract: This invention pertains to the use of polymer blends in making multiple layer films. In some layers, the elastomer or ethylene-based copolymer is blended with polypropylene, and in some layers, with polyethylene. Typical films have two to five layers. In multilayer films, at least one layer of a blend of polyethylene, preferably high density polyethylene, with elastomer and/or ethylene-based copolymers. Another layer is polypropylene blended with elastomers and/or ethylene-based copolymers. The films may have as few as two layers, one each having polypropylene and polyethylene, preferably high density polyethylene. Additional layers may be added to the two or three layer films taught herein, for variety of purposes.

Abstract: The invention is in an improved multiple layer packaging sheet material which can be formed into closed and sealed packages suitable for holding products containing substantial fractions of cyanoacrylate. The invention depends on the positioning of high density polyethylene in direct contact with the cyanoacrylate-type product, and positioning a primer on the other side of the high density polyethylene. Preferred embodiments of the sheet structure include additional layers to provide barrier and abuse resistance properties, and the necessary adhesive materials to hold the various layers of the structure together with good adhesion. Additional layers are contemplated. The sheet structure can be formed into a package which positions the high density polyethylene adjacent the cyanoacrylate product, and between it and the other layers at all locations of contact between the cyanoacrylate product and the packaging sheet material.

Abstract: A die necking method and apparatus for producing a smooth tapered wall between the container side wall and a reduced diameter neck includes a plurality of rotatable necking turrets that each have a plurality of identical necking substations each having a necking die. The necking dies in the respective turrets have an internal configuration to produce a necked-in portion on the container which has a first arcuate segment integral with the container side wall and a second arcuate segment integral with the reduced diameter neck. The necking substations also have a floating form control element that engages the inner surface of the container to control the portion of the container to be necked. The necked-in portion is reformed in each succeeding turret by dies to produce a smooth tapered wall between the arcuate segments.

Abstract: A drawn and ironed container having a reduced neck around an upper open end has a bottom profile which exhibits excellent strength characteristics and nests with an end double-seamed to the open end of the container. The bottom profile includes a center spherical dome surrounded by a U-shaped annular portion defining a lower support surface for the container. A joining segment is integral with the container side wall and the U-shaped annular portion includes a first annular arcuate portion having an exterior radius and a second annular arcuate portion having an interior radius.

Abstract: Multiple layer films and containers. The films have a first layer of either nylon 6,6 or a combination of nylon 6,6 with nylon 6 wherein the melting point temperature of the combination is greater than the melting point temperature of the corresponding nylon 6. A second layer is comprised of linear low density polyethylene, and 0% to 40% low density polyethylene. A third adhesive layer is disposed between the first and second layers. The containers are susceptible of being sealed with included gas at low pressure, and subsequently boiled in water without rupture of the seals. The film is preferably coextruded from tubular die, thereby setting forth a new method for forming a mulitple layer film comprising a combination of linear low density polyethylene, optionally with up to 40% low density polyethylene, and nylon 6,6, optionally combined with nylon 6 in a composition having a melting point temperature greater than that of the corresponding nylon 6.

Abstract: This invention pertains to blends of a first component of a polypropylene, a second component of an ethylene-based copolymer, and a third component which provides some properties representative of elastomeric polymers. The blends are useful in making single and multiple layer sheet structures. The invention further contemplates packages made from sheet structures incorporating layers of the blends therein.