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. 12, 1995
Filed:
Jan. 25, 1995
Yasutaka Suga, Ibaraki, JP;
Ibaraki Seiki Machinery Company, Ltd., Osaka, JP;
Abstract
An apparatus for packaging articles in deaerated condition. A belt-like film is tubulated to enclose a plurality of articles transported in a longitudinally aligned fashion. The articles and the film are transported together in integral relation while the air in the tubular film is evacuated by a pipe nozzle inserted in the film tube. The pipe nozzle is connected to a vacuum source via a connecting pipe. Usually, the interior of the tubular film is kept in a suitable negative pressure condition by suction through a tube bypassing a normally closed valve disposed on the connecting pipe. The valve is impulsively opened immediately before seal bars press the film from opposite sides so that the air in the film is instantly discharged.