Collapsible dispensing tube with internal press-to-close sealers to prevent reverse flow of the content towards the closed end

Abstract

A collapsible dispensing tube providing a flexible walled portion having a dispensing nozzle selectively closed with a flip cap on one end and a closed base on another end. Press-to-close sealers are formed on the inner surface of the flexible wall at spaced intervals from the closed end of the flexible wall to the dispensing nozzle. After the content is gradually squeezed toward the dispensing nozzle the sealers are pressed-to-close together to attach the opposed inner surfaces of the flexible wall from the base toward the dispensing nozzle to sequentially form closure seals across the flexible portion of the tube. This prevents the reverse displacement of the content in the tube that occurs when the tube is squeezed in its middle and therefore eliminates the need to roll up the flexible portion of the tube to efficiently dispense the content thereof.

What is claimed is: 
     
         1 . A collapsible dispensing tube for dispensing quantities of fluid and viscose materials, comprising:
 a flexible compartment portion with an open end and a closed base opposite said open end, said compartment defining a first half inner surface and a second half inner surface thereof;   a nozzle assembly connected to said flexible portion at said open end thereof; and   a first closure profile formed on said first half inner surface and a second closure profile formed on said second inner surface of said flexible wall, said first and second profiles being arranged at spaced intervals along longitudinal axis of said flexible portion, each of said first profiles include a thwart wise spaced male profile, and each of said second profiles include a corresponding thwart wise spaced female profile connectable to said male profile to thereby form a closure seals across said flexible portion.   
     
     
         2 . The collapsible dispensing tube as defined in  claim 1  wherein each of said male profiles is flexible and extends upwards in a direction towards second half of said flexible portion, and each of said female profiles extends downward in a direction towards the first half of said flexible portion. 
     
     
         3 . The collapsible dispensing tube as defined in  claim 2  wherein each of said male profiles has a split arrow shaped tip formed on a distal end thereof and each of said female members includes an E-shaped notch adapted to fixedly receive said male profile. 
     
     
         4 . The collapsible dispensing tube as defined in  claim 1  wherein said nozzle assembly comprises:
 a shoulder portion connected to said flexible wall at said open end thereof; 
 a nozzle integral with said shoulder portion and extending outwardly there from, said nozzle having a passageway communicating with said content holding cavity; and 
 a cap adapted and configured to be pressed on or otherwise secured on said nozzle to close said passageway. 
 
     
     
         5 . A collapsible dispensing tube for dispensing quantities of fluid and viscose materials, comprising:
 a flexible compartment portion with an open end and a closed base opposite said open end, said compartment defining a first half inner surface and a second half inner surface thereof;   a nozzle assembly integral with said shoulder portion connected to said flexible portion, said nozzle assembly having a passageway in communication with said content holding cavity;   a first closure profile formed on said first half inner surface and a second closure profile formed on said second inner surface of said flexible wall said first and second profiles being arranged at spaced intervals along longitudinal axis of said flexible portion, each of said first closure profiles includes a thwart wise spaced male participant, and each of said second closer profiles a corresponding number of thwart wise spaced female participants connectable to said male participants to thereby form a thwart wise closure seals across said flexible portion.