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　　B型袋由絕緣抗靜電織物制成，但擊穿電壓小于6 kV。該規(guī)定可防止高能傳播刷放電的風險，刷放電可點燃粉塵-空氣混合物、易燃氣體和溶劑蒸汽。B型袋可在存在MIE大于3mJ的可燃粉塵的情況下使用，但僅在沒有可燃氣體蒸汽的情況下使用。B型袋有時稱為防靜電袋，但應注意，B型袋僅提供有限的防靜電保護，不提供任何靜電消散機制。

　　Type B bags are constructed from insulating fabric but have a breakdown voltage less than 6 kV.This provision prevents the risk of energetic propagating brush discharges which can ignite dust-air mixtures and flammable gases and solvent vapors.Type B bags may be used in the presence of the combustible dusts with MIE of greater than 3mJ,but only in the absence of flammable vapors of gases.Type B bags are sometimes called antistatic bags,but it should be noted that Type B only provides limited protection against static electricity and they do not provide any mechanism for dissipating static charge.