American National Can Company

American Can Company

Other

American National Can

Rexam Beverage Can Company

Pechiney Emballage Flexible Europe

Pechiney Plastic Packaging, Inc.

Robert J McHenry

Thomas T Tung

Henry Pfutzenreuter, Iii

John Vella, Jr

Frederick G Kudert

William A Tennant

Maurice G Latreille

George F Nahill

James A Wachtel

Charles E McChesney

Dominique Petit

Boh C Tsai

Kenneth B Spencer

Mark A Williams

Donald C Vosti

Robert J Reed

Wilson T Piatt, Jr

Joseph B Brito

Martin A Ryan

Krishnaraju Varadarajan

Claude Encrenaz

Colleen M Schwingel

Robert Seebohm

Mostafa Aboulfaraj

Nicholas Adrain Thorne

Krishnaraju Vavadarajan

A resealable closure for beverage containers uses initial physical interference to initiate a seal between a sealing flap and a dispensing port in a lid of the resealable closure. Once the initial seal is achieved, a pressure differential develops, resulting in additional force tending to bias the sealing flap toward the dispensing port. The sealing flap is actuated by an external drive means, that can also be a dust cover to prevent debris from contaminating any surfaces that may come into contact with the contents of the beverage container. There is a slack between initial movement of the external drive means and initial movement of the sealing flap, during which the pressure differential is preferably equalized through the unsealing of a vent hole in the resealable closure.

Resealable closure for beverage container

An injection nozzle device including multi-polymer injection nozzles comprising an assembly of shells, and having fixed, tapered passageways communicating with annular orifices close to a nozzle gate and to each other, and polymer flow balancing and directing means in the passageways in the form of concentric and eccentric chokes.

Apparatus for injection molding multi-layer articles

A closure member for an open end of a container includes a main body segment secured to edge portions of the container and a flap segment pivotally mounted to the main body segment. The main body segment defines a discharge port through which fluid discharges from the container; and the flap segment moves between a first position in which is covers the discharge port and a second position away from the discharge port.

Resealable closure for open end of container

Methods and apparatus for injection molding and injection blow molding multi-layer articles, and the articles made thereby

Apparatus for unit cavity and multi-cavity, multi-layer injection molding and injection blow molding machines are provided, which in preferred embodiments, include:

Methods and apparatus for injection molding and injection blow molding

Can components having a metal-plastic-metal structure

An injection molding machine for simultaneously injection molding a plurality of articles each made of plural polymeric materials. The injection molding machine includes a source of a first polymeric material and a source of a second polymeric material. The injection molding machine also includes a plurality of co-injection nozzles, each of the nozzles has an associated injection cavity mold. Each of the nozzles also has a first flow channel for providing a stream of said first polymeric material to said mold and a second flow channel for providing a stream of said second polymeric material to said mold. The machine further includes a manifold for feeding the polymeric materials from their sources to each of the nozzles and each of the associated molds, such that each of the streams of the first polymeric materials flows from each nozzles into each associated mold simultaneously and each of the streams of the second polymeric materials flows from each nozzle into each associated mold simultaneously.

Apparatus for injection moulding multi-layer articles

An apparatus for injection molding a plurality of multilayer, multimaterial plastic containers. A plurality of co-injection nozzles are positioned to feed a plurality of cavities defined by a plurality of injection molds and a source of polymer materials is located upstream of the nozzles. The apparatus also includes a flow channel for each of a plurality of polymer streams to define a path between the polymer source and at least one of the co-injection nozzles such that each of the co-injection nozzles is in communication with one of the flow channels for each polymer stream and the polymer streams enter more than one of the co-injection nozzles. The channels are arranged to provide substantially the same flow experience to each polymer stream.

A co-injection nozzle having a central injection channel with an open end and providing an injection path for injecting streams of melt materials to form a multi-layer article from the melt material streams. The nozzle comprises interfitting axially concentric members, including at least an interfitting shell and an outer nozzle cap, each having inner and outer surfaces. The nozzle cap has an inner surface with a frustoconical portion enclosing at least a portion of the outer surface of the interfitting shell. An enclosed portion of the outer surface of the shell has a frustoconical shape. The outer and inner frustoconical surface portions are adapted and cooperate to form an annular melt material flow passageway having a fixed tapered frustoconical portion of substantially invariable dimension which terminates at a fixed, annular orifice whose dimension is substantially invariable for flow of a melt material therethrough, for injection of the material from the nozzle.

Apparatus for injection molding and injection blow molding multi-layer

Fabrication process for metal-polyester construction

An injection molding machine for simultaneously injection molding a plurality of articles each made of plural polymeric materials. The injection molding machine includes a source of a first polymeric material and a source of a second polymeric material. The injection molding machine also includes a plurality of co-injection nozz;es, each of the nozzles has na associated injection cavity mold. Each of the nozzles also has a first flow channel for providing a stream of said first polymeric material to said mold and a second flow channel for providing a stream of said second polymeric material to said mold. The machine further includes a flow control device for feeding the polymeric materials from their sources to each of the nozzles and each of the associated molds, such that each of the streams of the first polymeric materials flows from each nozzle into each associated mold simultaneously and each of the streams of the second polymeric materials flows from each nozzle into each associated mold simultaneously.

Foaming insert for a beverage container

Drawn and ironed cans of a metal-plastic construction and their

Easy open end of a metal-plastic construction

Methods for injection molding and injection blow-molding multi-layer plastic articles, including containers and parisons for forming containers, which comprise providing a plurality of co-injection nozzle means for injecting plastic materials into associated injection cavities to form each article, providing streams of polymeric materials to form corresponding layers of the articles, moving each stream separately to plural nozzle means, separately receiving the streams in the plural nozzle means, and injecting the streams to form the multi-layer plastic articles. Preferably, each stream of material which is to form a corresponding layer of the articles is provided with substantially the same polymer flow, preferably from where each stream is split and moved to each nozzle means. Valve means can be employed in each nozzle means for positively controlling preferably substantially simultaneously the flow and nonflow of respective materials into the central channel of the nozzle means. Preferably, injection is effected to provide uniform onset flow of one or more internal layer materials into the central channel, cause foldover of one or more of the internal layers and provide in the parison or container sidewall one or more internal layers whose leading edge is substantially unbiased relative to the terminal end of the sidewall.

Methods for injection molding and blow-molding multi-layer plastic

Growing community of inventors

St. Charles, IL, United States of America

Robert J McHenry