| 摘要 |
PROBLEM TO BE SOLVED: To provide a mushroom bed cultivation bag in which a bag body can be surely torn without affected by variation in the thickness, material or the like of a filter.SOLUTION: A mushroom bed cultivation bag 1 comprises: a lengthy bag body 2 whose top edge is open and which is made of plastic film formed to have molecular orientation that tensile strength in a longitudinal direction is larger than tensile strength in a transversal direction; a vent hole 3 formed on an upper part of the bag body 2; a filter 4 which is welded to the bag body 2 in the state of covering the vent hole 3 and allows air to pass to prevent intrusion of bacterial contaminants; and a tab for breaking 5 for breaking and tearing the bag body 2 which is welded to the bag body 2 at a position different from the position on the bag body 2 where the filter 4 is welded. A welding part 9 that welds the tab for breaking 5 to the bag body 2 is formed in a mountain shape where a tearing start side (opening part side at the top edge of the bag body 2) is up. |
