Patent Number: 6,168,041

Title: Injection stretch blow molded tubular containers

Abstract: Tubular containers can be produced by injection stretch blow molding processes. Such processes comprise the biaxial stretching of the preform as the preform is being converted into the tubular container. The preform will be stretched longitudinally by means of a stretch rod and laterally by means of the pressure of the blowing gas. The tubular containers produced by these processes will have burst strengths three to five times that of other tubular containers and can be produced in a thin wall collapsible form. Further, the tubular container will have a tensile strength in the machine direction along a tensile strength in the cross direction greater than other tubes, including laminate tubes, coextruded blow molded tubes and injection stretch tubes. In addition, the tubular containers can be single chamber containers or multichamber containers.

Inventors: Berger; Kenneth R. (Gainesville, FL), Connan; Patrick A. (Prestbury, GB), Readdy; Robert L. (Hopatcong, NJ)

Assignee: Colgate-Palmolive Company

International Classification: B65D 35/02 (20060101); B65D 35/08 (20060101); B65D 1/02 (20060101); B65D 1/04 (20060101); B65D 023/02 ()

Expiration Date: 01/02/2018