A solid sheet (10) has a first fiber layer (11) having a first surface (111) and a second surface (112) and a second fiber layer (12) having a first surface (121) and a second surface (122). The two layers are laminated so that the second surface (112) of the first fiber layer and the first surface (121) of the second fiber layer face each other. The solid sheet (10) forms multiple hollow bumps (20) projecting from the first fiber layer (11) in the direction away from the second fiber layer (12). The first fiber layer (11) and second fiber layer (12) are made from a nonwoven textile. The first fiber layer (11) includes a plurality of types of fibers. The plurality of types of fibers includes at least two types made from first fibers and second fibers. The first fibers and second fibers include a high melting-point component and low melting-point component, respectively, and the diameter ratio of the high melting-point component and low melting-point component differs.本發明之立體片材(10)具有:第1纖維層(11),其具有第1面(111)及第2面(112);及第2纖維層(12),其具有第1面(121)及第2面(122)。兩層係以第1纖維層第2面(112)與第2纖維層第1面(121)對向之方式進行積層。立體片材(10)之第1纖維層(11)向離開第2纖維層(12)之方向突出而形成有多個中空之凸部(20)。第1纖維層(11)及第2纖維層(12)包含不織布。第1纖維層(11)包含複數種纖維。複數種上述纖維包含包括第1纖維及第2纖維之至少2種纖維。第1纖維及第2纖維分別包含高熔點成分及低熔點成分,該高熔點成分與該低熔點成分之直徑比不同。10‧‧‧立體片材11‧‧‧第1纖維層12‧‧‧第2纖維層13‧‧‧接合部20‧‧‧凸部21‧‧‧凹部111‧‧‧第1面112‧‧‧第2面121‧‧‧第1面122‧‧‧第2面201‧‧‧頂部Z‧‧‧厚度方向
