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:
Oct. 28, 2003
Filed:
Dec. 11, 2001
Roland Andersson, Malmö, SE;
Tetra Laval Holdings & Finance S.A., Pully, CH;
Abstract
The disclosure relates to an apparatus for conveying and folding flexible packaging material, comprising a conveyor ( ) with a conveyor belt ( ) which is provided with through-going holes and which, for a part of its length, extends substantially rectilinearly and with constant orientation along a suction box ( ). By connecting the suction box ( ) to a source of partial vacuum, a partial vacuum is created at the side of the belt facing towards the packaging material, which ensures that the packaging material is well-fixed and can thereby pass closely adjacent and be heated by a heating device ( ) extending along the belt. The apparatus makes for concentrated, energy-efficient and well-defined heating of an edge region of the packaging material intended for thermosealing.