| 摘要 |
<p>The method involves extruding a preform (3). The preform is projected against walls of a mold (4) of a shape corresponding to a shape of a container by blowing by a blow pin (5). A ring (7) surrounding the pin, is inserted and positioned to come at a neck of the container during a blowing operation during manufacture. The ring is partially embedded in an inner wall of the neck to form a part of the inner wall, where an inner diameter of the ring is equal to an inner diameter of the neck. The ring is made of plastic, elastomer, rubber or metal. The neck is formed by an extrusion-blowing method. An independent claim is also included for a container.</p> |
