Packaging material and packaging bag

Details Packaging material and packaging bag Packaging material and packaging bag

2003-03-25

2010-02-09

Newhouse, Nathan J (Department: 3782)

Flexible bags

Wall details

Specified seam structure

C383S109000, C383S121000

Reexamination Certificate

active

07658543

ABSTRACT:
A packaging bag (1) where the heat sealing parts of packaging materials (2, 3) having a printed light shielding layer (14) in the layer structure are overlapped and heat sealed, and a sealing state confirming part (8) having a light transmittance higher than that of the other sealing side is provided across one sealing side (11) out of both sealing sides facing each other when the heat sealing parts are overlapped. Visual confirmation of incomplete heat sealing part can thereby be facilitated.

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PCT International Preliminary Examination Report, Mar. 23, 2004.
English translation of JPO 409314719-A.

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