Ventilated membrane suitable for wrapping bag of white fungus sealed is ventilative

The utility model relates to a ventilated membrane suitable for wrapping bag of white fungus sealed is ventilative, this ventilated membrane use the non -woven fabrics as the substrate, be equipped with the one deck and cover the viscose layer on the substrate on the substrate except that the region of middle part, and not the covering of substrate middle part is drenched on the region on viscose layer and be equipped with the one deck and drench membrane or subsides and glue a barrier paper, set up a ring -type between membrane or barrier paper and the viscose layer and do not cover the region on viscose layer and distinguish for ventilative drenching, be equipped with supplementary base stock on the viscose layer. Its gas permeability is good, and the sterilization of specially adapted white fungus fungus package can not produce and explode a bag phenomenon, has shortened the sterilization time greatly, has reduced the consumption of steam, has improved sterilizer's utilization ratio. This ventilated membrane has ventilatively and filterable dual function, can not explode the bag in the time of can guaranteeing heat sterilization, can prevent again that miscellaneous fungus from polluting the fungus package. Only stay cyclic annular ventilative district to supply the hypha to breathe, neither can let the shrivelled death of white fungus hypha can provide sufficient air again and supply the hypha to breathe, improved the cultivation success rate.