Abstract: A tamper indicating closure cap of the type having a pivotable stopper closing a cap top orifice. The stopper has an integral flange overlying portions of the top and extending behind the pivotable member to preclude pivoting of the pivotable member. The flange is removable from the pivotable member and indicia formed in the container top underlying the flange is made visible by removal of the flange.

Abstract: A crystallizable sealing glass composition in powered form that is a blend of a Pbo/ZnO/B.sub.2 O.sub.3 /SiO.sub.2 /BaO glass in the vitreous state and a small effective amount of finely divided zinc zirconium silicate as a nucleating agent. The zinc zirconium silicate has an average particle size of about 2 to 8 microns and is used alone, or in combination, with zirconium silicate having an average particle size of about 20 to 30 microns. The glass composition can be used to seal television picture tubes at 440.degree. C. or 460.degree. C. with excellent results, the early stages of crystallization showing large crystals and large glassy area, as well as DTA curve peaks at 15 to 25 minutes at 440.degree. C.

Abstract: A coextruded multilayer heat shrunk plastic sleeve label having a tough skin layer and a brittle polystyrene foam layer, the skin layer being extruded from a blend of low density polyethylene, a block copolymer of butadiene and styrene as a compatibility agent and optionally, small amounts of polystyrene. The amount of the block copolymer used is sufficient to provide limited adhesion between the skin and foam layers to maximize the toughness of the total label structure. The sleeve label can be sealed by ultrasonic, hot air and heat sealing.

Abstract: A method and apparatus for inspecting a translucent container to detect a radial reflective defect in the container is disclosed. The apparatus comprises means for illuminating a container by focusing a radiant beam of light into an elongated image extending in a direction parallel to the longitudinal axis of the container along a portion of the container being inspected. The apparatus also comprises means focused on the illuminated portion of the container for sensing the intensity of light reflected from the illuminated portion and for viewing the illuminated portion from a direction and forming an angle ranging from about 75 degrees to about 105 degrees from a path of the incident beam of light. The sensing means provides a plurality of the electrical signals each proportional to the reflected intensity from a corresponding position on the illuminated portion of the container.

Abstract: A tamper-indicating closure system used with a container that has a sealing disc over the neck of the container. The closure threads onto the container neck but is held against threading down below a predetermined level by a rupturable tear band between the bottom of the closure and the shoulder of the container. A pourout dispenser feature is incorporated in the closure and after the tear band is removed, the continued threading-on of the closure will cause a member in the closure to rupture the sealing disc and the contents of the container can be poured therefrom through the closure. If the tear band is intact, tampering has not occurred.

Abstract: A coextruded multilayer sheet adapted for use as a tough, solvent seal label sleeve on containers, the sheet comprising a foam layer for use on the inside of the sleeve next to the container and an outer decoratable solid skin layer, the skin layer and foam layer being coextruded from an extrudable blend comprising about 30 to 60 wt. % high density polyethylene, about 30 to 50 wt. % of a block copolymer of styrene and butadiene as a compatibility agent, and about 10 to 30 wt. % polystyrene, the resultant sleeve label being tough, and easily solvent sealable on a high speed production basis. The sleeve label can also be sealed by ultrasonic, hot air and heat sealing.

Abstract: An orifice ring and its holder are disclosed in detail, particularly as to the manner in which the ring is positioned within the holder or pan. The pan is formed with locating slots within which locating keys on the holder are to be positioned. Furthermore, the orifice holder or pan is provided with a precisely formed, horizontally extending slot along the center line of the diameter thereof which defines the four orifice openings. Vertical, side-locating pads, of which there are four in number on the bottom of the orifice ring, define parallel vertical planes at opposed sides of the orifices. These vertical planes coincide with the vertical planes defined by the horizontal slot formed in the pan. Four seating pads formed on the ring define a horizontal plane that is parallel to the top of the orifice ring. These seating pads support the ring in the bottom of the pan. These pads are juxtaposed the side-locating pads. In this manner, precise location of the orifice relative to the pan is provided.

Abstract: An infrared heat tunnel with hot air circulation for heat shrinking wraparound labels on containers which are moved through the tunnel in an upright attitude on an open weave conveyor belt. The infrared heating is by electrical strip heaters along the sides of the tunnel and air is blown by blowers across these heaters to impinge on the sides of the containers. The air is drawn down through the conveyor belt since the inlet to the blowers is from beneath the conveyor. A vertical air curtain along each side of the first half of the tunnel is adjustable in length to effectively delay the skin shrinkage of the film-foam material of the labels in order to get wrinkle-free shrinkage of the film and underlying foam about the container wall and heel areas without bottle rotation.

Abstract: A method and apparatus for optically inspecting and sorting transparent containers such as glass containers having defects in the container sidewalls, and for distinguishing unacceptable major refractive defects and opaque defects from each other and from commercially acceptable minor refractive defects. First and second sources of diffused illumination having differing source widths are sequentially directed onto a container while the container is rotated about its central axis for at least one revolution during each illumination. A camera which includes a plurality of light sensitive elements disposed in a linear array parallel to the axis of container rotation is positioned to receive light energy transmitted through the container sidewall.

Abstract: A tamperproof package comprising a container having a neck and an annular radial flange beneath the neck and a plastic closure removably interengaged with the neck. The closure has a top wall and a peripheral skirt. A plastic pilfer band interengages the skirt, such that when the closure is applied to the container, the band is flexed over and engages beneath annular flange on the neck of the container, and when the closure is thereafter removed from the container, the band is prevented from removal from the container and is thereby disengaged from the closure. In a modified form the plastic pilfer band includes an integral liner which is severed from the band and engages the top wall of the closure during assembly of the band to the closure.

Abstract: Apparatus for sensing the passage of a gob of molten glass through a gob deflector or gob guide wherein a quick-disconnect nipple is fixed in a radial opening adjacent the lower end of the gob deflector. A hollow, quick-disconnect housing which is adapted to fit over the nipple is formed with a longitudinal passage therethrough, a washer-shaped holder lying in a plane, normal to the axis of said passage and intermediate the ends thereof serves to support a phototransistor with its leads extending into an end of the passage. A radial hole in the side of said housing has an elongated armored, stainless steel cable fixed thereto and an elongated high temperature insulating sleeve covering a pair of Teflong insulated wires extends within the cable with one of the wires connected to the emitter lead on said transistor and the other wire to the collector lead on the transistor.

Abstract: Apparatus and methods are disclosed for a high speed production line in which a container is wrapped with a plastic label comprising a foam polystyrene layer, there being means to move a leading edge of the label to the periphery of a rotating vacuum drum, means to apply methylene chloride to the underside of the foam layer to form finite areas on the leading label edge and a finite area on the trailing edge. The finite areas have therein a rapidly solidifying tacky solution of the foam polymer in methylene chloride, the tacky viscous solutions rapidly solidifying to form an adhesive bond. The solvent-applied label is quickly moved to a label wrapping station where it is wrapped around a container, the finite areas on the leading edge tacking the label to the container, and the finite area on the trailing edge forming a cohesive bond on the seam formed by the overlapped label ends.

Abstract: A ring seal tamper indicating device is disclosed in the form of a preselectively fracturable ring seal for sealing the space between a container and its closure. The ring seal has an adhesive on its top and bottom surfaces whereby removal of the closure causes the ring seal to fracture or distort to warn the user of prior tampering. As an alternative, the ring seal may be impregnated with an adhesive.

Abstract: A child-resistant package with a snap-on closure comprising a container having a neck finish including an annular retaining bead having at least one notch therein and a closure having a top wall and peripheral skirt, the skirt having a lifting tab on the outer surface thereof and a radially inwardly extending locking lug on the inner surface thereof adjacent the external lifting tab. The closure includes a tamper indicating band attached to the skirt by a plurality of circumferentially attached bridge portions. The band is formed with a plurality of circumferentially spaced vertical ribs.