Design and manufacture of removable membrane sealing components for consumer packaging

Abstract

A closure for a container having a container opening is provided herein. The closure includes an annular top having an inner skirt depending downwardly from an inner perimeter of the annular top and having an outer skirt depending downwardly from an outer perimeter of the annular top. An annular bottom extends radially inward from the inner skirt, and the annular bottom has defined thereon a dispensing aperture positioned adjacent to the container opening when the closure is mounted to the container. A sealing member is formed to the annular bottom for closing the dispensing aperture. The outer skirt optionally includes a hingedly flexible flap having one or more gussets dimensioned to cooperate with the anti-rotation structure of a neck finish.

1 . A closure for a container having a container opening, the closure comprising:
 an annular top having an outer skirt depending downwardly from an outer perimeter of the annular top and an inner skirt depending downwardly from an inner perimeter of the annular top;   a bottom portion of the inner skirt having a dispensing aperture positioned adjacent to the container opening when the closure is mounted to the container;   a removable sealing member formed to the bottom portion for closing the dispensing aperture; and   a plurality of inwardly facing anti-rotational ratchets circumferentially spaced about at an interior surface of the outer skirt adapted to cooperate with structure of a container neck.   
     
     
         2 . The closure of  claim 1 , wherein the plurality of inwardly facing anti-rotational ratchets are adapted to cooperatively engage a plurality of outwardly facing anti-rotational ratchets circumferentially spaced about the container neck. 
     
     
         3 . The closure of  claim 1  further comprising thread structure positioned above the plurality of inwardly facing anti-rotational ratchets and on the interior surface of the outer skirt. 
     
     
         4 . A closure for a container having a container opening, the closure comprising:
 an annular top having an outer skirt depending downwardly from an outer perimeter of the annular top and an inner skirt depending downwardly from an inner perimeter of the annular top;   a bottom portion of the inner skirt having a dispensing aperture positioned adjacent to the container opening when the closure is mounted to the container;   a removable sealing member formed to the bottom portion for closing the dispensing aperture; and   the outer skirt terminating into a bottom flange having a plurality of fins at an upwardly externally facing surface thereof.   
     
     
         5 . A closure for a container having a container opening, the closure comprising:
 an annular top having an outer skirt depending downwardly from an outer perimeter of the annular top and an inner skirt depending downwardly from an inner perimeter of the annular top;   a bottom portion of the inner skirt having a dispensing aperture positioned adjacent to the container opening when the closure is mounted to the container;   a removable sealing member formed to the bottom portion for closing the dispensing aperture;   at least one retaining member raised inwardly from an interior surface of the outer skirt, wherein at least one of the retaining members is adapted to cooperatively engage structure of a container neck.   
     
     
         6 . The closure of  claim 5 , wherein the structure of the container neck includes a locking surface which is positioned above the at least one retaining members when the closure is positioned on the container. 
     
     
         7 . The closure of  claim 5 , further comprising a circumferential frangible line or line segments positioned on the outer skirt at a lower portion thereof. 
     
     
         8 . The closure of  claim 7 , wherein the cooperative engagement of the at least one retaining member with structure of the container neck prevents the closure from being removed from the container neck without damaging the frangible line or line segments.