Abstract: Asymmetrical layered structures such as asymmetrical films are disclosed. The main body section contains a multitude of pores (voids). A thin surface skin is free of pores. The entire structure is fabricated from a polyalkylene sulfone resin in which the alkylene moiety contains 6 to 18 carbon atoms. Processes for preparing the structures also are disclosed. The structures are semi-permeable to gases and are used as membranes to enrich the oxygen content of oxygen/nitrogen mixtures.

Abstract: A method and apparatus for maintaining critical alignments between the neck of a container and closure application stations. The embodiment disclosed illustrates apparatus for handling containers during the process of filling and applying closures to the filled containers. A star wheel with outwardly opening container body pockets and a container guide rail receives filled containers as they are descending from a filling position, and moves the containers through closure pickup and pre-tightening apparatus to a closure applicating machine. A container neck guide receives and guides the necks of filled containers along a predetermined path through the pickup and pre-tightening stations. The neck guide, pickup and pre-tightening stations are supported on the same structure to insure that the predetermined alignment positions are maintained.

Abstract: A system for metering and dispensing product from a container is illustrated in an embodiment in which a closure, for a container having a neck portion, has a discharge port with a spout pivotally supported in the port. The spout has a top wall which closes the port and has spaced opposed depending side walls which extend into the container when the spout is in the closed position. The side walls have matching curvilinear edges. A valve member is supported in the container so that the spout can be moved into and out of registration with it. The valve member has a curvilinear surface that conforms to and mates with the curvilinear edges of the side walls when they are in registration to define a closed dispensing chamber having a predetermined measure of product therein. The spout is filled when out our registration with the valve member.

Abstract: A hollow thermoplastic container having an annular closure receiving insert embedded in the wall thereof made by blowing a hollow preform radially outwardly against the confines of a mold wherein a cone-shaped mandrel is positioned on the wall of the mold and supports the insert on the wall of the mold with the apex extending inwardly such that as the preform is blown outwardly, the plastic material is deflected and caused to form about the periphery of the insert.

Abstract: A tamper indicating package including a container having a neck with an external thread and an annular retaining bead below the thread and a plastic closure comprising a base wall, a peripheral skirt and a tamper indicating band connected to the free edge of the peripheral skirt by integral bridges. The tamper indicating band includes an integral portion that extend below the annular bead on the container such that when the closure is unthreaded, the bridges are broken. The band includes integral circumferentially spaced supports that extend axially toward the free edge of the peripheral skirt and the bridges extend from the supports to the free edge. Each bridge includes a generally axial leading edge and a generally axial trailing edge. The upper edge of leading edge in the direction of unthreading intersects the lower edge of the skirt at a sharp corner to define a stress concentration point at the edge of the skirt. The lower edge of the leading edge of each bridge intersects the band along a radius.

Abstract: A neck mold for a glass champagne bottle forming system for forming bottles on the well-known I.S. forming machine is made of two matching halves that form the transfer bead and lower portion of the neck of the bottle mates with an annular, one-piece guide ring carried by the neck ring. The annular guide ring has a relatively sharp edge that matches with the plunger that forms the interior of the bottle finish and also has a flat surface, adjacent the sharp edge, that extends at a 25.degree. angle with the horizontal and forms a planar sloping surface on the inner, upper surface of the bottle with the planar surface being joined to a flat, generally horizontal surface that extends to a curved surface that in turn extends over the top of the bottle finish to an outer annular line where the guide and neck ring mold meet. The resulting bottle produced is one which does not require fire polishing to remove any mold match lines or beads that might interfere with proper sealing of the corks.

Abstract: In order to apply "hot melt" adhesives to thin plastic film labels for glass containers without distorting the labels, a "hot melt" adhesive which is thixotropic is melted at 350.degree. F. and is continuously worked to maintain its viscosity at a fairly low level while being cooled to about 110.degree. F., at which time it is applied to the label. The label is applied to the glass bottle and the resultant labeled bottle will have the property of being able to withstand pasteurization temperatures, as well as refrigeration temperatures, without having the label separate from the bottle.

Abstract: The present invention provides, without the drawbacks accompanied by the use of hot melt adhesives, an attractive, easily recycled labelled container, the label, on its underside that is adjacent the container when applied, being provided with a finite area on its leading edge and a finite area on its trailing edge, by applying thereto a solvent for the polymer in each of the finite areas, the finite areas comprising a viscous tacky solution of the polymer in the solvent, the solidifying solution being sufficient to tack and bond the label to container during wrapping.After the label is wrapped around the container, the bond between the container and label becomes weaker as the solidifying solution hardens so that later the label can be easily and cleanly stripped from the container for recycling.

Abstract: A six-sided or parallelepiped carton which is formed by folding a die-cut blank of a generally rigid, unitary blank of a polymeric material in which a major portion of the thickness of the blank comprises an expanded polymeric material, at least some of the corners of such carton being self-sealed by webbed areas or gussets which comprise portions of such blank but which are of reduced thickness relative to the major portions of the remainder thereof, and a die-cut blank which is adapted to be formed into such a carton.

Abstract: A tamper indicating package comprising a container having a neck with an external thread and a closure comprising a base wall and a peripheral skirt having an internal thread engaging the thread on the container. The closure includes a tamper indicating band connected to the free edge of the skirt along a weakened line and having an internal bead adapted to engage an annular rib on the neck of the container below the threads. The tamper indicating band includes indicia which is contrasting to any indicia on the closure such that when the closure is removed from the container and reapplied to the container, the absence of the indicia on the bottom of the closure will indicate that the tamper indicating band has been severed from its attached relationship to the closure.

Abstract: A tamper indicating package comprising a container having a neck with a threaded finish and a closure which includes a base wall and depending peripheral skirt having threads interengaging the threads of the container, and a tamper indicating band attached to the skirt by a plurality of circumferentially spaced frangible bridge members. The tamper indicating band includes a bead for engaging a complimentary bead on the container, and a segmented annular flange extending axially upwardly and inwardly from the lower edge of the tamper indicating band towards the base wall of the closure. The annular flange has its free edge formed with a plurality of segments such that the stiffness of the flange is reduced. In addition, the leading end of each segment is cut to a 30.degree. angle. These two features facilitate the application of the closure to the container.

Abstract: A blow molding apparatus wherein a plurality of circumferentially spaced sets of molds are provided for rotation about a horizontal axis and plastic material is extruded in tubular form between the mold sections of each set of molds and the molds are closed and the portion of the plastic within each mold section is blown to form a hollow article, a slide assembly for mounting the radially outermost mold section of each set of molds comprising a base, a slide on the base providing a mold support for one mold section and adapted to move radially toward and away from the other mold section associated with the section supported by the slide, a cam follower slidable upon the base and linkage between the cam follower and the slide operable to provide a rapid movement of the mold support radially inwardly and radially outwardly as the cam follower follows an annular cam in the machine.

Abstract: Sleeve fabricating apparatus for fabricating cylindrical sleeves from rectangular blanks of a heat-shrinkable thermoplastic material and for transferring the sleeves, in succession, to frustoconical mandrels of a cup-forming machine. The sleeve-fabricating apparatus has a plurality of cylindrical mandrels that are rotatably affixed to a rotary turret. The sleeves are fabricated from rectangular blanks that are cut, in succession, from a web of indefinite length as the web is being unwound from a coil at an unwind stand. Each blank is longer than the circumference of the cylindrical mandrel to which it is applied, leaving ends of the blank which overlap, and the overlapped ends are joined to one another by heat-sealing. Cups are formed by the cup-forming machine, each cup being formed from one of such sleeves and a disc. The sleeve fabricating apparatus also includes a disc forming mechanism for forming discs and applying the discs, in succession, to the cylindrical mandrels.

Abstract: Five embodiments of a tamper indicating molded plastic band that locks over a ledge on the closure and beneath a flange on the container. The cylindrical band is molded with continuous locking rings or interrupted tabs joined adjacent the top end bottom edge thereof and which extend inwardly and generally toward each other to form mechanical locking members. Depending upon the particular arrangement of the locking rings on the tamper indicating band, the band would be applied to the closure before or after threaded application to the container. The band may be used with a plastic or metal closure and with a plastic, metal or glass container having a threaded neck and outwardly extending radial flange therebelow beneath which the ring or tab will lock.