Invention Grant
- Patent Title: Heat-resistant and biaxially stretched blow-molded plastic container having a base movable to accommodate internal vacuum forces
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Application No.: US15313732Application Date: 2015-05-19
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Publication No.: US11110643B2Publication Date: 2021-09-07
- Inventor: Sam Van Dijck , Alain Dessaint , Jan Deckers
- Applicant: Plastipak BAWT S.à r.l.
- Applicant Address: LU Bascharage
- Assignee: Plastipak BAWT S.à r.l.
- Current Assignee: Plastipak BAWT S.à r.l.
- Current Assignee Address: LU Bascharage
- Agency: Fishman Stewart PLLC
- Priority: EP14169671 20140523
- International Application: PCT/EP2015/060946 WO 20150519
- International Announcement: WO2015/177112 WO 20151126
- Main IPC: B29C49/64
- IPC: B29C49/64 ; B29C49/06 ; B29C49/54 ; B65D1/02 ; B65D79/00 ; B29C49/12 ; B29C49/48 ; B29C49/42 ; B29C49/08 ; B29K67/00 ; B29L31/00

Abstract:
A heat-resistant and biaxially stretched blow-molded plastic container includes a base movable to accommodate vacuum forces generated within the container and thereby decrease the volume of the container. Embodiments of a container include a push-up portion, and first and second parting lines that are separated from one another by a gap and that extend on opposite sides of the push-up portion. Embodiments of such a container exhibit one or more of the following: (a) a distance between each parting line and the center of the base is not more than 20 mm; (b) a distance between the two parting lines is not more than 40 mm; and/or (c) a distance between the two parting lines is less than 50% of the transverse dimension of the base measured between the two outermost points of the parting lines. Methods for blow molding heat-resistant plastic containers are also disclosed.
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