A plastics container and closure assembly in which the closure has a cap part, a tear away band, an anchor band, a hinge connecting the cap part to the anchor band and a bung to seat within the mouth of the container. The bung is deeper on one side than on the other whereby when viewed from one side the bottom of the bung is formed by an oblique line extending upwardly from the deepest part of the bung to the shallowest part and wherein the shallowest part of the bung is adjacent to a thumb tab by which the cap may be manipulated and the deepest part of the bung is adjacent to the hinge. The anchor band has an auxiliary band retaining projection positioned when in use below the auxiliary bead on the container and a main band-retaining projection when in use below the main band-retaining bead the arrangement being such that when the tear-off strip is removed the cap part remains connected to the anchor band by a hinge and the anchor band is firmly held in position.
This application is a continuation-in-part of application Ser. No. 345,138 filed by Brian Leslie Miskin and Eugene Edward Davis on Mar. 26, 1973 and now abandoned.
A blow molded or injection molded plastic container has a neck formed with a substantially horizontal flat top, an internal substantially vertical first sealing surface, a groove, a very smooth second sealing surface of less diameter than the first sealing surface and a lower groove and then a vertical stretch which merges into a breast which widens out to the full size of the container, an external first vertical surface, a horizontal inwardly extending shoulder, an indented second vertical surface of lesser diameter than the first vertical surface and an external bead, and a third vertical surface at about the level of the vertical stretch. The second sealing surface has an "injection finish" obtained by use of a blow pin in the mold. The neck accommodates a cap which has upper and lower internal beads (which seat under the shoulder and external bead of the neck) interrupted in a plurality of gaps, permitting stretching of the cap to seat on the neck. The top disc has a flexible peripheral flange which may be gripped to lift the cap when the bottom of the skirt is torn off.
A blow molded or injection molded plastic container has a neck formed with a substantially horizontal flat top, an internal substantially vertical first sealing surface, a groove, a very smooth second sealing surface of less diameter than the first sealing surface and a lower groove and then a vertical stretch which merges into a breast which widens out to the full size of the container, an external first vertical surface, a horizontal inwardly extending soulder, an indented second vertical surface of lesser diameter than the first vertical surface and an external bead, and a third vertical surface at about the level of the vertical stretch. The second sealing surface has an "injection finish" obtained by use of a blow pin in the mold. The cap has upper and lower internal beads (which seat under the shoulder and external bead of the neck) interrupted in a plurality of gaps, permitting stretching of the cap to seat on the neck. The top disc has a flexible peripheral flange which may be gripped to lift the cap when the bottom of the skirt is torn off.
A plastic container neck has an inside substantially vertical sealing surface, a top groove, a very smooth second sealing surface of less diameter than the first sealing surface, a lower groove and a vertical stretch. The outside of the neck has a vertical surface, a horizontal, inwardly-extending shoulder, an indented second vertical surface of lesser diameter than the first vertical surface and an external bead, and a third vertical surface. The container has a substantially uniform wall thickness. The second sealing surface has an "injection finish" obtained by use of a blow pin in the mold. The cap has lower internal beads interrupted in a plurality of gaps, permitting stretching of the cap to seat on the neck. Thickenings on the interior of the cap outer skirt paralleling the spiral groove of the skirt from the bottom edge of the skirt to the horizontal groove to facilitate tearing the skirt.
A hinged closure has a cap part and an integral band adapted to be separated circumferentially from one another except for a narrow interconnecting hinge by removing a partial arcuate tear band between the cap part and the anchor band and then applying upward pressure upon the cap part so as to tear two remaining arcuate membranes which connect the tear band with the hinge.
The present invention is directed towards a top for closing a container, comprising a hinge for articulating the cap on the ring at the container opening plane or above the latter. The top further comprises a boss projecting inside the top provided on the ring beneath the hinge articulating the cap on the ring.
