The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 08, 1985
Filed:
Dec. 01, 1981
Warren N Hubert, Ducanville, TX (US);
RJR Archer, Inc., Winston-Salem, NC (US);
Abstract
A headpiece for a collapsible tube is a unitary member made up of two different plastics, each plastic providing a different property for the headpiece. The headpiece is formed by extruding on top of one another a first torus like annulus of a first plastic and a second torus like annulus of a second plastic. The two plastic annuli are simultaneously molded to form the headpiece. One plastic forms, primarily, the outer portion of the headpiece and the other plastic forms, primarily, the inner portion of the headpiece. The machine for molding the plastic head includes a work table rotatably indexed from station to station at which various operations are performed. The mandrel which holds the cylindrical body, to which the head is molded, is movable from an inboard position to an outboard position so that operations can be performed relative to it. The molding operation is performed at the inboard position. The loading, extruding, capping and ejection operations are performed at the outboard position. The nozzle of the plastic extruder includes a chilled wiper for wiping an extruded plastic annulus into the mold cavity.