The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 06, 2022
Filed:
May. 28, 2019
Tetra Laval Holdings & Finance S.a., Pully, CH;
Pietro Martini, Parma, IT;
Francesca Tavoni, Modena, IT;
Giulio Bertani, Carpi, IT;
Maurizio Filippini, Modena, IT;
TETRA LAVAL HOLDINGS & FINANCE S.A., Pully, CH;
Abstract
A molding apparatus that injection molds an opening device on a packaging material sheet includes first and second molding units to injection mold a wall portion of the opening device on the sheet; the first molding unit comprising first and second molding elements configured to cooperate in contact to delimit at least part of a mold cavity fillable with molten material for forming a pull-member of the opening device; the mold cavity being delimited at least by first and second surfaces defined by the first and second molding elements respectively; a third molding unit cooperable with the first and second molding elements to delimit the mold cavity, and defining a third surface, facing the first and second surfaces and delimiting, together with these latter, the mold cavity; the third surface is shaped to be equidistant from the first and second surfaces when the first and second molding elements cooperate.