Invention Grant
- Patent Title: Packaging material and packaging bag
- Patent Title (中): 包装材料和包装袋
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Application No.: US10511313Application Date: 2003-03-25
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Publication No.: US07658543B2Publication Date: 2010-02-09
- Inventor: Shunichi Shiokawa , Shingo Masai
- Applicant: Shunichi Shiokawa , Shingo Masai
- Applicant Address: JP Tokyo JP Hiroshima
- Assignee: Toppan Printing Co., Ltd.,Aohata Corporation
- Current Assignee: Toppan Printing Co., Ltd.,Aohata Corporation
- Current Assignee Address: JP Tokyo JP Hiroshima
- Priority: JP2002-115022 20020417
- International Application: PCT/JP03/03646 WO 20030325
- International Announcement: WO03/086895 WO 20031023
- Main IPC: B65D30/10
- IPC: B65D30/10
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.
Public/Granted literature
- US20050227028A1 Packaging material and packaging bag Public/Granted day:2005-10-13
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