< Topic >Peeling off the portion of the bag body, it pulls to the width of desire and tears, being cheap can remove the cultivation sack efficiently simply from the bacteriums bed, it offers the sack for bacteriums bed cultivation whose operating efficiency is good.SolutionsSack 10 for bacteriums bed cultivation the bag body the air hole 18 where was formed to the upper side of 11 which consists of the plastic film where the top opens with the closed-end and this bag body and this air hole being overturned, prevents the invasion of the various germs and the filter 19 which makes the air pass and, has, the filter is overturned and the air hole is deposited in the bag body. In welded zone 20 of the filter, it can provide the corner which makes the peeling off stress concentrate which occurs the occasion where the filter is peeled off to lower side of the bag body in bag body 11, the bag body pulls according to the peeling off from these corners, tears at specified width and cleavage flare part 27A of 2 provisions which are cleft is formed.< Selective figure >Drawing 1【課題】袋体の一部を引きはがして所望の広さに引き裂き、菌床から栽培袋を効率よく簡単に取外すことができる安価で作業性のよい菌床栽培用袋を提供する。【解決手段】菌床栽培用袋10は、有底で上端が開口したプラスチックフィルムからなる袋体11と、この袋体の上部側に形成された通気孔18と、この通気孔を覆って雑菌の侵入を防ぎ空気を通過させるフィルタ19と、を備え、フィルタが通気孔を覆って袋体に溶着されている。袋体11には、フィルタとの溶着部20に、フィルタを袋体の下方側へ引き剥がす際に発生する引き剥がし応力を集中させる角部が設けられ、これらの角部からの引き剥がしに応じて、袋体が所定幅で引き裂き開裂される2条の開裂誘導部27Aが形成されている。【選択図】図1
