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. 28, 2004
Filed:
Oct. 17, 2003
Kazuo Konishi, Takatsuki, JP;
Ibaraki Seiki Machinery Company, Ltd., Osaka, JP;
Abstract
The present invention heat-seals a cover film onto a tray accommodating an item to be packaged, without creating wrinkles in the film. In the present invention, respective touch bars provided at equidistant intervals on chains respectively and continuously move trays accommodating items to be packaged, and a frame to which sealers of the same outline as the trays are fixed moves back and forth at the same speed, in the same direction as the trays. A crank below the frame moving back and forth raises a sealing base frame upwards when the frame advances, the trays are pushed against the sealers positioned above the same, via the moving film, and the film is welded to the open edge of the trays. The movement of the sealing base frame is a box motion, and the efficiency of the sealing operation is increased.