초록 ▼

A one-piece self-draining container and method and apparatus for forming same. The container includes a body and a finish wall extending upwardly from a body opening. The finish wall surrounds a dispensing spout which extends above the top of the wall. A frustoconical web joins the finish wall and t

A one-piece self-draining container and method and apparatus for forming same. The container includes a body and a finish wall extending upwardly from a body opening. The finish wall surrounds a dispensing spout which extends above the top of the wall. A frustoconical web joins the finish wall and the dispensing spout to form a drain apron gutter channel having a relatively steeply inclined cone angle. A drain opening is defined adjacent the channel for draining fluid from the channel into the container body. A removable cap having a depending skirt defining a thread which mates with an internal thread on the container wall to thereby threadably engage and close the container. The method is performed on the type of extrusion-injection blow molding machine as generally disclosed in U.S. Pat. No. 2,804,654 as modified in accordance with the invention to form the web wall in situ with a frustoconical configuration of uniform cross sectional thickness.

대표청구항 ▼

[ What is claimed is:] [1.] In a self-draining container molded in one piece havinga body portion;an integrally formed neck defining a cylindrical opening having a predetermined diameter, said neck formed in situ with and extending upwardly from said body portion, a dispensing spout formed integral

[ What is claimed is:] [1.] In a self-draining container molded in one piece havinga body portion;an integrally formed neck defining a cylindrical opening having a predetermined diameter, said neck formed in situ with and extending upwardly from said body portion, a dispensing spout formed integral and in situ with and at least partially encircled by said neck, at least a portion of said dispensing spout being a section of cylinder having an external surface with a diameter less than said predetermined diameter, said dispensing spout having a circumferential extent of at least 180.degree. but less than 360.degree. and presenting opposing edges which define a gap at the lower end of said spout, and an integrally formed annular finish wall encircling said spout in spaced relation thereto;an apron web integrally connecting said annular finish wall and said spout to said neck, said web being formed in situ with said annular finish wall and dispensing spout and cooperating therewith to define a channel for receiving liquids draining from said dispensing spout when the container is moved from an inverted dispensing position to an upright position;said apron web having generally parallel upper and lower wall surfaces sloping downwardly toward said spout in the container upright position;said web extending upwardly and outwardly from the lower end of said spout extending upwardly from said web along an axis generally parallel to the axis of said neck;said web having a substantially uniform cross-sectional thickness throughout its radial and circumferential extent encircling said spout;said gap providing an opening through which liquids may flow from said channel to said neck and body portion when the container is upright, said container being manufactured by a process in which at least the portions of the container comprising the neck, dispensing spout, annular finish wall, web and said gap through which liquids flow are formed and joined integrally by molding in a first mold by injection molding in one operation and the body is thereafter integrally formed and joined integrally with those portions injection mold formed in the first mold by extruding a length of tubing joined at one end thereof to an extending integrally from said finish portion and the tubing is thereafter blown to form the container body portion by blow molding in a second mold but in the same molding machine apparatus in which the injection molding is performed with no post-molding operations required for those portions injection mold formed in the first mold.