US 11,697,241 B2
Blow molding method and apparatus for forming squeezable plastic container
Randal D. Porter, Norcross, GA (US); Daniel M. Futral, Marietta, GA (US); John K. Silva, Suwanee, GA (US); William J. Peek, Lawrenceville, GA (US); Brian J. Benell, Monroe, GA (US); and Laura A. Flanagan-Kent, Decatur, GA (US)
Assigned to Silgan Plastics LLC, Chesterfield, MO (US)
Filed by Silgan Plastics LLC, Chesterfield, MO (US)
Filed on Jun. 17, 2021, as Appl. No. 17/350,260.
Application 15/043,976 is a division of application No. 14/034,028, filed on Sep. 23, 2013, granted, now 9,314,956.
Application 17/350,260 is a continuation of application No. 16/404,352, filed on May 6, 2019, granted, now 11,065,802.
Application 16/404,352 is a continuation of application No. 15/043,976, filed on Feb. 15, 2016, granted, now 10,293,538.
Application 14/034,028 is a continuation of application No. 13/226,175, filed on Sep. 6, 2011, granted, now 8,568,634.
Application 13/226,175 is a continuation of application No. PCT/US2011/046140, filed on Aug. 1, 2011.
Claims priority of provisional application 61/400,885, filed on Aug. 4, 2010.
Prior Publication US 2021/0308930 A1, Oct. 7, 2021
This patent is subject to a terminal disclaimer.
Int. Cl. B29C 49/08 (2006.01); B29B 11/08 (2006.01); B29B 11/14 (2006.01); B29C 49/06 (2006.01); B29C 49/50 (2006.01); B65D 35/08 (2006.01); B29C 49/00 (2006.01); B65D 1/02 (2006.01); B29C 49/12 (2006.01); B29K 23/00 (2006.01); B29K 67/00 (2006.01); B29K 77/00 (2006.01); B29L 23/20 (2006.01)
CPC B29C 49/08 (2013.01) [B29B 11/08 (2013.01); B29B 11/14 (2013.01); B29C 49/06 (2013.01); B29C 49/071 (2022.05); B29C 49/50 (2013.01); B65D 1/02 (2013.01); B65D 35/08 (2013.01); B29C 49/12 (2013.01); B29C 2949/072 (2022.05); B29C 2949/073 (2022.05); B29C 2949/077 (2022.05); B29C 2949/078 (2022.05); B29C 2949/0764 (2022.05); B29C 2949/0765 (2022.05); B29C 2949/0776 (2022.05); B29C 2949/08 (2022.05); B29C 2949/0839 (2022.05); B29C 2949/0845 (2022.05); B29C 2949/0846 (2022.05); B29C 2949/22 (2022.05); B29C 2949/24 (2022.05); B29C 2949/26 (2022.05); B29C 2949/28 (2022.05); B29C 2949/302 (2022.05); B29C 2949/3008 (2022.05); B29C 2949/3012 (2022.05); B29C 2949/3016 (2022.05); B29C 2949/3024 (2022.05); B29C 2949/3026 (2022.05); B29C 2949/3032 (2022.05); B29C 2949/3034 (2022.05); B29K 2023/06 (2013.01); B29K 2023/086 (2013.01); B29K 2023/12 (2013.01); B29K 2067/003 (2013.01); B29K 2077/00 (2013.01); B29K 2995/0067 (2013.01); B29L 2023/20 (2013.01); B65D 2203/00 (2013.01); B65D 2203/02 (2013.01); Y10T 428/1352 (2015.01)] 20 Claims
OG exemplary drawing
 
1. A plastic preform for use in a blow molding system to produce a blow molded plastic squeezable container comprising:
a sidewall;
an interior cavity;
an open end;
a closed end;
a neck located adjacent to the closed end;
wherein the sidewall of the preform comprises:
an upper section having a first thickness;
a middle section having a second thickness, wherein the second thickness is greater than the first thickness;
a transition section between the upper section and the middle section, the transition section having an increasing thickness that provides a transition from the first thickness of the upper section to the second thickness of the middle section; and
an inwardly angled shoulder section between the middle section and the neck.