Title: Bottom filling pouch packaging method and apparatus

Abstract: A method and apparatus for bottom filling a measured quantity of a particulate product in a pouch by first moving a closed pouch into an air-free atmosphere; opening the pouch and spreading its mouth with a pivoted filling tube guide; lowering a filling tube into the pouch until lower gates of the tube are positioned near the bottom of the pouch; loading the filling tube with a measured quantity of particulate product when the gates are closed; thereafter opening the gates, releasing a jet of air-free gas into the bottom of the pouch, and continuing to introduce the high pressure air-free gas into the pouch as the filling tube is raised out of the pouch and the product is being transferred from the filling tube to the pouch with the air-free gas purging air from the pouch and the product; and sealing the air-free filled pouch while in the air-free atmosphere.

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Inventors: Mencacci, Samuel A. (San Jose, CA, US)

Application Number: 650346
Filing Date: 1976-01-19
Publication_date: 1977-07-05
Assignee: FMC Corporation (San Jose, CA)
Primary Class(es): 53/512 53/110, 53/571, 141/264
Other Classes:
US Patent Ref:

2113636	Apr, 1938	Vogt	53/112.
2311707	Feb, 1943	Stewart	53/110.
2649671	Aug, 1953	Bartelt	53/112.
3162219	Dec, 1964	Johnson et al.	141/264.
3381446	May, 1968	Marchand	53/187.
3619975	Nov, 1971	Johnson et al.	53/110.

Other Refs:
Primary Examiner: McGehee, Travis S.
Assistant Examiner:
Attorney: Moore; A. J., Tripp; C. E.