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:
Aug. 21, 2012
Filed:
Feb. 24, 2009
Shinichi Fukeda, Iwakuni, JP;
Kazunori Yamamoto, Iwakuni, JP;
Shinichi Fukeda, Iwakuni, JP;
Kazunori Yamamoto, Iwakuni, JP;
Toyo Jidoki Co., Ltd., Tokyo, JP;
Abstract
A vertical bag packaging machine has a steam nozzle that is inserted into a bag to inject steam thereinto after an article to be packaged has been filled into the bag, thereby replacing the air in the bag with the steam to effect deaeration. After the steam-replacement deaeration, a seal portion to be ultrasonically sealed is preheated by a preheating device, thereby making the temperature of the seal portion uniform throughout it. The preheating temperature is not lower than a temperature of a highest temperature region of said seal portion before it is preheated and below a melting temperature of a material constituting an inner side of said bag Thereafter, the seal portion is ultrasonically sealed by an ultrasonic sealing device. Thus, reliable and stable ultrasonic sealing can be realized.