| http://www.w3.org/ns/prov#value | - It should be noted that the provision of the resistance seal 13 may be omitted in a case where a mechanism such as a pressing plate for pinching the small sac inlet portions 11 a is disposed in the sheet adhering unit 4 or the air filling unit 6 positioned on the downstream side not to leak the air filled in the small sacs 11.
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