초록 ▼

A container having upper and lower portions, the lower portion having self-supporting side walls and a bottom wall. The upper portion is flexible and non-self-supporting. Preferably, the upper and lower portions are formed of plastic material with the upper portion forming a unitary continuation of

A container having upper and lower portions, the lower portion having self-supporting side walls and a bottom wall. The upper portion is flexible and non-self-supporting. Preferably, the upper and lower portions are formed of plastic material with the upper portion forming a unitary continuation of the lower portion. The entire container may be formed using blow molding techniques or other conventional means such as co-extrusion.

대표청구항 ▼

A method of making a plastic container comprising an enclosure having a generally tubular side wall and an opening formed in said side wall, said method comprising the steps of: forming a generally tubular parison with corresponds to said generally tubular side wall by continually sequentially extru

A method of making a plastic container comprising an enclosure having a generally tubular side wall and an opening formed in said side wall, said method comprising the steps of: forming a generally tubular parison with corresponds to said generally tubular side wall by continually sequentially extruding a tubular parison having one and another portions of predetermined different wall thicknesses from a plastics material such that said one and another portions are integral tubular extensions of one another, and such that the predetermined thickness of said one portion is substantially less than the predetermined thickness of the other portion to impart flexible, gatherable and non-self-supporting characteristics to that region of said generally tubular side wall corresponding to said one parison portion and self-supporting characteristics to another region of said generally tubular side wall corresponding to said another parison portion; disposing said generally tubular parison having said one and another portions in a blow mold having mold walls which are sized and configured to a desired shape of said container; urging said one and another portions into conformance with the mold walls to form said tubular side wall having said non-self-supporting region and said self-supporting region; and forming said opening in said sidewall by removing a part of said plastic material forming said side wall to form the container.