Easily unsealable packaging body and method of manufacturing...

Details Easily unsealable packaging body and method of manufacturing... Easily unsealable packaging body and method of manufacturing...

2011-06-28

2011-06-28

Newhouse, Nathan J (Department: 3782)

Envelopes, wrappers, and paperboard boxes

Paperboard box

Nonunitary, peelable closure or securing element

C053S478000, C053S467000, C220S359100

Reexamination Certificate

active

07967187

ABSTRACT:
An easy-open packaging body1includes: a container body10with a flange14formed on a circumference of an opening13, and a cover20heat-sealed to the flange14to close the opening13. Inner and outer notches15A and15B enclosing the opening13are formed respectively on inner and outer circumferential sides on the flange14. The flange14and the cover20are heat-sealed by a first seal part16A having a predetermined width and formed between the inner and outer notches15A and15B to enclose the opening13and a second seal part16B having a width narrower than that of the first seal part16A and formed within an area of the first seal part16A to enclose the opening13along the first seal part16A, the second seal part16B having a projected seal part17projected outward relative to the other part on a position corresponding to a tab21.

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