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US 8,506,165 B2Granted
Easily openable packaging bag
AssigneeHosokawa Yoko Co., Ltd.
InventorsKousuke Shinozaki, Akio Yohtoh, Tadayuki Koyanagi
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AssigneeHosokawa Yoko Co., Ltd.
InventorsKousuke Shinozaki, Akio Yohtoh, Tadayuki Koyanagi
Estimating the term…
An easily openable packaging bag according to the present invention does not produce an opening piece resulting in a small piece of waste when opening, and facilitates opening even with a single hand. Furthermore the easily openable packaging bag of the present invention can be also applied to a packaging bag provided with barrier characteristics. The easily openable packaging bag joins both ends of a packaging material into a tube shape. Both of the joined ends are heat sealed to form a bonded rear portion in a rear portion of the tube portion and solid contents are contained in an inner section of the tube portion. A weakened portion is formed in a portion not occupied by the contents in the tube portion along a circumferential direction of the tube portion and the weakened portion is not provided in at least a portion of the bonded rear portion.
An easily openable packaging bag joining both ends of a packaging material into a tube shape, both of the joined ends heat sealed to form a bonded rear portion in a side portion of the tube portion, and containing solid contents in an inner section of the tube portion, wherein:
Dependencies are inferred from the claim text.