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:
May. 11, 2004
Filed:
Aug. 14, 2000
Tetra Laval Holdings & Finance SA, Pully, CH;
Abstract
The method is aimed at indirectly determining the energy absorbed by a conducting layer ( ) forming part of a strip of packaging material ( ) to be sealed transversely. The method is based on measuring parameters correlated with the power supplied by a current source ( ) to the packaging material ( ) during sealing, and with the temperature of the conducting layer ( ). The temperature measurement takes into account the temperature of the product to be packed, the characteristics of the packaging material, and the characteristics of the mechanical sealing members; correct cutting of the packaging material after sealing is also determined; and the parameters are monitored by measuring associated quantities and by comparison with permissible values.