| 摘要 |
PROBLEM TO BE SOLVED: To provide a cultivation bag easy to tear with manual operation, and inexpensive and excellent in workability. SOLUTION: This mushroom bed cultivation bag 100 is obtained by sealing one end of a bag body which is made of a plastic film formed in molecular orientation to prevent occurrence of pinhole, forming a vent hole 110 on the central part of the width direction of the bag body, and welding a filter 112 which covers the vent hole 110 to prevent invasion of various germs and pass air through. Furthermore, a welded part 114 of the bag body and the filter 112 is set with a stress concentrating part 116 to concentrate tearing stress produced when tearing off the filter 112 toward the seal part 104 of the bag body. COPYRIGHT: (C)2008,JPO&INPIT
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