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:
Nov. 07, 1995
Filed:
Jul. 20, 1994
Katsumi Nagai, Gunma, JP;
Orihiro Co., Ltd., Tomioka, JP;
Abstract
A vertical-type filling and packaging machine for filling and packaging a filling material in a tubular film of resin has a pair of squeezing rollers rotatably disposed one on each side of the tubular film filled with a filling material. The squeezing rollers press against the tubular film to clamp and feed the tubular film downwardly and create an unfilled region in the tubular film. A heat sealing mechanism which is disposed downwardly of the squeezing rollers for heat-sealing and severing the unfilled region has a heater bar for heat-sealing the unfilled region and a cooling bar for cooling the portion which has been heat-sealed by the heater bar. The heater bar and the cooling bar are successively pressable against a portion of the unfilled region while the tubular film is being held at rest. A cutting device, which may be an independent cutting blade or a triangular protrusion on the heater bar, severs the heat-sealed portion, thereby producing a sacked product. A plurality of film support members are disposed downwardly of the heat-sealing mechanism for gripping and holding a lower end of the unfilled region from the time the unfilled region is heat-sealed until the unfilled region is severed by the heat sealing mechanism.