Patent ID: 7846545

Claim:
A glass fiber material comprising: a glass fiber aggregate which contains an alkali-containing glass wool fiber is packed in a compressed state to take packing efficiency upon transportation or volume reducing rate into consideration so that the glass fiber aggregate is made into a compressed glass fiber package which is able to be handled as a freight where the bulk density is 80 to 135 kg/m 3 ; wherein the alkali-containing glass wool fiber is mainly used as a main material of a separator for an electric energy-storage device or a filter paper, wherein the alkali-containing glass wool fiber is manufactured by a flame attenuation process or a centrifugal process and made into fiber, having an average fiber size of 5 μm or less and containing 5% or more by weight of alkali metal oxide components, and wherein the glass fiber aggregate is an original cotton in an unprocessed state of the alkali-containing glass wool fiber manufactured by the flame attenuation process or the centrifugal process and made into fiber.