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:
Apr. 07, 2015
Filed:
Feb. 23, 2011
Pietro Martini, Parma, IT;
Davide Morciano, Modena, IT;
Elisa Michelini, Modena, IT;
Ivan Orlandi, Savignano sul Panaro, IT;
Pietro Martini, Parma, IT;
Davide Morciano, Modena, IT;
Elisa Michelini, Modena, IT;
Ivan Orlandi, Savignano sul Panaro, IT;
Tetra Laval Holdings & Finance S.A., Pully, CH;
Abstract
An apparatus for injection molding an opening device on a sheet packaging material having a hole possessing an axis, formed through a first layer and sealed by a cover portion of a second layer; comprises a mold cavity coaxially housing the cover portion and comprising a first chamber adapted to be filled with molten plastic material on a first side of the cover portion, and a second tubular chamber projecting along the axis from the first chamber and adapted to be filled with the molten plastic material coming from the first chamber through an annular peripheral portion of the cover portion to form, on a second side of the cover portion, a spout; an annular rib delimiting a passage connecting the first and second chamber and defining, when filled with the plastic material, an annular tearable membrane connection portion between the spout and the plastic material covering the cover portion.