US 12,227,329 B2
Stretch-blown plastic container with a handle region made integral and method of production for the plastic container
Adem Demir, Lauterach (AT)
Assigned to ALPLA WERKE ALWIN LEHNER GMBH & CO. KG, Hard (AT)
Filed by ALPLA Werke Alwin Lehner GmbH & Co. KG, Hard (AT)
Filed on May 29, 2020, as Appl. No. 16/886,873.
Application 16/886,873 is a division of application No. 16/202,259, filed on Nov. 28, 2018, granted, now 11,186,403.
Application 16/202,259 is a continuation of application No. PCT/EP2017/061602, filed on May 15, 2017.
Claims priority of application No. 00721/16 (CH), filed on Jun. 6, 2016.
Prior Publication US 2020/0290764 A1, Sep. 17, 2020
Int. Cl. B65D 1/02 (2006.01); B29C 49/06 (2006.01); B29C 49/08 (2006.01); B29C 49/42 (2006.01); B29C 49/48 (2006.01); B29C 49/72 (2006.01); B29C 65/00 (2006.01); B29C 65/16 (2006.01); B65D 23/10 (2006.01); B29K 67/00 (2006.01); B29K 101/12 (2006.01); B29L 31/00 (2006.01); B29L 31/46 (2006.01)
CPC B65D 1/0246 (2013.01) [B29C 49/06 (2013.01); B29C 49/08 (2013.01); B29C 49/4268 (2013.01); B29C 49/4273 (2013.01); B29C 49/4802 (2013.01); B29C 49/72 (2013.01); B29C 65/16 (2013.01); B29C 65/1635 (2013.01); B29C 65/1638 (2013.01); B29C 65/1651 (2013.01); B29C 66/0326 (2013.01); B29C 66/1122 (2013.01); B29C 66/1312 (2013.01); B29C 66/3494 (2013.01); B29C 66/50 (2013.01); B29C 66/81267 (2013.01); B29C 66/83221 (2013.01); B65D 23/10 (2013.01); B29C 2049/4807 (2013.01); B29C 49/4812 (2022.05); B29C 2049/725 (2013.01); B29C 65/1645 (2013.01); B29C 66/71 (2013.01); B29C 66/8122 (2013.01); B29C 66/919 (2013.01); B29C 66/949 (2013.01); B29C 2793/0018 (2013.01); B29C 2793/009 (2013.01); B29K 2067/003 (2013.01); B29K 2101/12 (2013.01); B29K 2995/0026 (2013.01); B29L 2031/463 (2013.01); B29L 2031/7158 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A method for producing a plastic container having a container body which encloses a filling volume with a container bottom; a container neck which adjoins an opposite end of the container body, having a container opening and an integrated handle region, the handle region being hollow and joined to the filling volume which is enclosed by the container body; and between the handle region and the container body, a through opening recessed and bordered over its entire periphery by wall parts of the container body and of the handle region which have been welded to one another; the method comprising:
axially and radially stretching a tubular preform into a plastic container by a stretch blowing in a blow mold;
during stretching bringing two opposing wall regions of the container body close together and into flat contact with one another in the blow mold by plungers which are extendable out of the blow mold to prepare an integrated handle region;
afterwards removing the stretch-blown plastic container from the mold for transport to a welding station;
compressing the wall regions which have been brought together in the welding station by two opposing plungers;
cooling the region to be welded through contact with the plungers;
welding the wall regions which have been brought together to one another with formation of a weld by laser welding; and
separating and removing one wall section enclosed by the weld from the container body with formation of the through opening.