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. 28, 2004
Filed:
Aug. 10, 2001
Per Gustafsson, Bjärred, SE;
Antonio Rendina, Carpi, IT;
Tetra Laval Holdings & Finance SA, Pully, CH;
Abstract
An apparatus and method for moulding opening devices onto a packaging material sheet at respective holes provided in the sheet includes first and second mould tools arrangeable in a closed position so as to be in contact with opposite sides of the sheet and in an open position so as to be positioned distally from the sheet. In the closed positions a mould cavity is formed between the first and second mould tools for accommodating a hole edge in the sheet. One of the mould tools includes a pair of half mould tools which are simultaneously moved from the open position to the closed position and vice versa such that the direction of movement of each of said half mould tools between the open and closed positions have a directional component extending substantially parallel to the extension plane and a directional component extending substantially perpendicularly to the extension plane, for reducing wear of the mould tools.