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:
Jun. 22, 1993
Filed:
Sep. 03, 1991
Mathias L Aarts, Bilthoven, NL;
Sara Lee/DE N.V., , NL;
Abstract
The invention relates to a method for making a vacuum-package filled with granular material. In this method, the package filled with granular material and made from a thin-walled and flexible packaging foil is placed in a holder surrounding the bottom and sidewalls of the package and comprising flat, parallel walls, and a vacuum is applied to the contents of the package and the package is subsequently vacuum-sealed hermetically. According to the invention, the contents of the package, during at least a part of the evacuation step, are compressed by moving the flat and parallel walls of at least one pair of opposite sidewalls of the holder toward each other in mutually parallel manner against the package. The invention further relates to an apparatus for use in the invention.