< Topic >As for purpose of this invention, being to offer the material for sterilization packing, although possessing as much as possible low basic weight, furthermore, in regard with to the tearing strength and the microbial barrier effect, there are times when it offers the material for sterilization packing which shows both high level value simultaneously.SolutionsAs for this invention, being something which offers the material for sterilization packing for medical instrument which it should sterilize, as for that, the polyamide (PA) we to do the shape of the fiber quality seat which includes the fiber and the aforementioned seat conforming to International Standard ISO536 and basic weight under 100g/m2, conforming to the European standard EN21974 when it was measured it is something which features the average tearing strength above 1900mN, and that it possesses the bacterial efficiency of filtration BFE of 95% or more when it measured.【課題】本発明の目的は、滅菌包装用材料を提供することであって、可能なかぎり低い坪量を有しながらも、しかも、その引裂強度とその微生物バリア効果とに関して、同時に両方の高いレベル値を示す滅菌包装用材料を提供することにある。【解決手段】本発明は、滅菌すべき医療器具用のための滅菌包装用材料を提供するものであって、それは、ポリアミド(PA)繊維を含む繊維質シートの形をしており前記シートが国際規格ISO536に準拠して測定された場合に100g/m2未満の坪量、欧州規格EN21974に準拠して測定した場合に1900mN以上の平均引裂強度、および95%以上の細菌ろ過効率BFEを有することを特徴とするものである。