JPH0441865U

JPH0441865U -

Info

Publication number: JPH0441865U
Application number: JP8211290U
Authority: JP
Priority date: 1990-08-01
Filing date: 1990-08-01
Publication date: 1992-04-09

Description

[Brief explanation of the drawing]

第１図は本考案の１実施例を示す切欠正面図、
第２図は第１図のＡ−Ａ′部拡大断面図、第３図
は気密室による気密袋における独立気密室の弁体
作用の説明図、第４図は従来の気密袋における独
立気密室の弁体の作用説明図である。図において、１，１′……外側樹脂皮膜、２，
２′……内側樹脂皮膜、３……不着処理部、４…
…弁側融着線、５……弁腔、６……上辺接合線、
７……下辺接合線、８……側部接合線、９……独
立気密室、１０……上辺外接合線、１１……通気
路、を示す。 FIG. 1 is a cutaway front view showing one embodiment of the present invention;
Fig. 2 is an enlarged cross-sectional view of section A-A' in Fig. 1, Fig. 3 is an explanatory diagram of the valve body action of an independent airtight chamber in an airtight bag with an airtight chamber, and Fig. 4 is an independent airtight chamber in a conventional airtight bag. FIG. In the figure, 1, 1'...outer resin film, 2,
2'...Inner resin film, 3...Non-adherence treatment section, 4...
... Valve side fusion line, 5... Valve cavity, 6... Upper side joining line,
7... Lower side joining line, 8... Side joining line, 9... Independent airtight chamber, 10... Upper side joining line, 11... Ventilation path.

Claims

[Scope of utility model registration request]

Between the two outer resin films forming the airtight bag,
In an airtight bag in which one or more independent airtight chambers are formed by sandwiching two inner resin films that form the valve body and bonding the periphery by heat welding, leaving a non-adhesive part that serves as the entrance of the valve cavity, each airtight chamber is The inner resin coatings 2 and 2', which are polymerized with the outer resin coatings 1 and 1' forming the outer resin coatings 9, are moved from both sides of the non-adhesive treatment section 3 toward the inside of the airtight chamber 9. An airtight bag equipped with a check valve body having two linearly welded valve cavities 5.