Plastic dispensing tube having shaped corners
AssigneePechiney Plastic Packaging, Inc.
InventorsDouglas J. Jackson, Daniel L. King
Life of this patent
Estimating the term…
Abstract
There is a plastic dispensing tube having shaped corners. The dispensing tube has a tubular plastic sleeve and a plastic head affixed to one end of the sleeve. The sleeve has an interior surface. The head defines a neck having a passageway therethrough and a shoulder defining one or more corners therein. The head further defines one or more ribs extending from the one or more corners into the sleeve. The one or more ribs is affixed to the interior surface of the sleeve. There is also a process for making the plastic dispensing tube.
Claims25
A plastic dispensing tube, comprising:
- a tubular plastic sleeve and a plastic head affixed to one end of the sleeve, the sleeve having an interior surface, the head defining a neck having a passageway therethrough, the head defining a shoulder defining one or more corners therein, the shoulder further defining one or more ribs extending from the one or more corners into the sleeve, the one or more ribs being affixed to the interior surface of the sleeve.
A process for making a dispensing tube, comprising:
- a) inserting a first die into an end of a tubular sleeve having an interior surface;
- b) mating the first die with a second die, the first and second dies defining a mold, the mold defining therein a cavity in the shape of a head defining a neck having a passageway therethrough and a shoulder having one or more corners therein and one or more ribs extending from the one or more corners, the cavity extending from neck to shoulder from the second die to the first die;
- and
- c) injecting into the cavity of the mold a plastic melt to form the head and heat weld it to the end of the sleeve with the ribs of the shoulder extending into and being heat welded to the interior surface of the sleeve.
Dependencies are inferred from the claim text.