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:
Mar. 04, 2003
Filed:
Jul. 30, 2001
Uwe Koehn, Osnabrueck, DE;
Windmoeller & Hoelscher, Lengerich, DE;
Abstract
A sack made of thermoplastic plastic that has been provided with gussets is closed after being filled in that the open side of the sack is pulled tight and provided with a crosswise seal. In order to be able to produce the crosswise seal even when the region to be sealed is contaminated, the lateral regions of the crosswise seal are formed on the region of the sack, which is still lying flat, including the gussets and extending to the transitional region by a first sealing sequence, preferably by a thermal sealing process. After the sack has been filled, the middle region of the crosswise seal is produced by a second sealing sequence, preferably an ultrasound sealing process.