초록 ▼

The present invention relates to a blow molded plastic container whose thin wall shoulder portion has a plurality of rib-like protrusions. Each of said rib-like protrusions are configured with multiple radii of curvature having a specifically defined relationship. The protrusions so formed do not ad

The present invention relates to a blow molded plastic container whose thin wall shoulder portion has a plurality of rib-like protrusions. Each of said rib-like protrusions are configured with multiple radii of curvature having a specifically defined relationship. The protrusions so formed do not adversely affect the integrity of the shoulder portion wall structure and do not distort upon internal pressurization of the container.

대표청구항 ▼

A blow molded plastic container which comprises a neck portion adapted to receive a closure; a shoulder portion; a body portion; and a bottom portion, said shoulder portion having along at least a part of the length thereof a plurality of upwardly directed rib-like protrusions, each protrusion in ho

A blow molded plastic container which comprises a neck portion adapted to receive a closure; a shoulder portion; a body portion; and a bottom portion, said shoulder portion having along at least a part of the length thereof a plurality of upwardly directed rib-like protrusions, each protrusion in horizontal cross-section having a first transition portion, a central portion and a second transition portion connected in series, said first transition portion being concave outwardly and having a substantially uniform radius of curvature R1, said central portion being concave inwardly and having a substantially uniform radius of curvature R2, and said second transition portion being concave outwardly and having a substantially uniform radius of curvature R3 wherein R1 and R3 are substantially the same and are about 7 to 9 times greater than R2.