| 摘要 |
PROBLEM TO BE SOLVED: To provide a protection sheet material whose function is enhanced by forming a chemical agent layer on a film face and further laminating a separate film material, etc. as usage, and a bag body formed of the sheet material. SOLUTION: A resin liquid containing a chemical is applied partially or wholly on the surface of a tubular film formed by inflation molding for forming a chemical layer on the front face of the film during the rolling process where the film is folded and rolled up in the width direction or by unrolling the film once rolled up. The processed tubular film is cut in a predetermined length and is reversed so that the layer is positioned inside. To obtain a protection bag, one opening part is closed to form a bag. COPYRIGHT: (C)2008,JPO&INPIT
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