A pinch bottom open mouth bulk material bag fabricated from polywoven material has closures at one or both ends that are non-sewn and which comprise a strip of tape running in the cross-bag direction. The tape is folded over the respective bag end, which may be modified, and is glued in place to close the end. The closure has no holes or other openings through which contaminants may enter the bag interior.
A block bottom bulk material bag, or satchel bottom bag, is formed from multiple plies of paper and an inner ply of plastic that is adhered to the innermost ply of paper. The bag is formed from roll-stock material that is cut into blanks. The knives that cut the blanks are registered relative to one another so that when the pinch bottom or satchel bottom is formed there is no paper surface exposed to the interior of the bag and the entire interior surface of the bag to which bulk material contained in the bag is exposed is covered with plastic.
A block bottom bulk material bag, or satchel bottom bag, is formed from multiple plies of paper and an inner ply of plastic that is adhered to the innermost ply of paper. The bag is formed from roll-stock material that is cut into blanks. The knives that cut the blanks are registered relative to one another so that when the pinch bottom or satchel bottom is formed there is no paper surface exposed to the interior of the bag and the entire interior surface of the bag to which bulk material contained in the bag is exposed is covered with plastic.
Paul Lin - Portland OR, US Yuming Pang - Portland OR, US
Assignee:
Standard Multiwall Bag Manufacturing Co. - Beaverton OR
International Classification:
B65D 33/18 B65D 30/20 B65D 30/10
US Classification:
383 78, 383114, 383120
Abstract:
A pinch bottom open mouth bulk material bag fabricated from polywoven material has closures at one or both ends that are non-sewn and which comprise a strip of tape running in the cross-bag direction. The tape is folded over the respective bag end, which may be modified, and is glued in place to close the end. The closure has no holes or other openings through which contaminants may enter the bag interior.
Bulk Materials Bag Having Anti-Skid Treatment And Method Of Applying Treatment
An anti-skid treatment is applied to one or both major surfaces of bulk materials bags. The treatment may be applied to any bulk material bag, but is detailed in respect of films that tend to be relatively slippery, such as oriented polypropylene (“OPP”) and biaxially oriented polypropylene (“BOPP”). In one preferred embodiment, an elastomeric polymer having a coefficient of friction higher than that of the bag material is applied in strips to one or both surfaces of the bag. A method of manufacturing the bags is also described.
Associated Hygienic Products, Llc Mar 1, 2008 - Dec 1, 2010
Machenical Engineer
Sdandard Bag Company Mar 1, 2008 - Dec 1, 2010
Senior Plant Engineer
Standard Multiwall Bag Mfg Mar 1987 - Mar 2008
Plant Engineer
Education:
Portland State University 1986 - 1990
Bachelors, Bachelor of Science, Mechanical Engineering
Skills:
Lean Manufacturing Manufacturing Continuous Improvement Engineering Root Cause Analysis 5S Process Engineering Six Sigma Tpm Kaizen
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