Patent ID: 8020258

Claim:
A fiber accumulating apparatus for an absorbent body of an absorbent article, comprising a fiber accumulating drum having on an outer peripheral surface thereof a concave portion having a shape that corresponds to a shape of an absorbent body of an absorbent article, wherein said fiber accumulating drum is provided with a perforated body that forms a bottom of said concave portion, said perforated body is formed with a large number of sucking pores that open to said bottom of said concave portion; and while said fiber accumulating drum is being rotated and suctioning is being made from said sucking pores toward internal side of said fiber accumulating drum, an air-conveyed absorbent body raw material including fluff pulp and high water absorptive polymer is directly accumulated on said perforated body which is within said concave portion, and the accumulated absorbent body raw material is transferred onto a transferring conveyor provided so as to face said fiber accumulating drum, thus forming the absorbent body raw material into an absorbent body of an absorbent article; and wherein said perforated body has said large number of sucking pores formed therein and comprises a perforated plate that makes up said bottom of said concave portion and a flow-adjuster that is disposed on an internal side of said perforated plate and flow-adjusts an air flow, said perforated plate and said flow-adjuster are integrally constructed; and each of said sucking pores of said perforated body is formed in a cone shape having pore sizes in diameter smaller on an internal side than on an external side thereof so as to prevent said absorbent body raw material from completely fitting in said sucking pores or from passing into an inside of said fiber accumulating drum.