| 摘要 |
A container (10) having a neck (14) with a non-tapered cylindrical upper drain portion, and a frictional interference fit collar (20) for a withdrawal member (45) is disclosed which results in tight interference fit. Also total effective withdrawal of the contents of the container is promoted by providing a ring like stop or seat (21) at the bottom of the neck. The construction also will accommodate flaws and defects in the manufacture of the withdrawal member or the drain portion resulting from scratches which will otherwise permit leakage upon withdrawal of the contents. Also, a method is directed to manufacturing the container by which a mandrel for insertion in the neck has a lower end portion providing a seating ring, and an upper portion defining the interior portion, with an interference collar protruding inwardly in a portion spaced from the lower end portion. Radius and draft angles permit the mandrel to be withdrawn from the moulded plastics product without deforming or damaging the same, but only after the neck of the container including an internal interference fit collar has been shaped. <IMAGE> |
