This composite sheet manufacturing method comprises: an irregularity-forming process of feeding a first sheet (2) into the intermeshing sections of a first roll (11) and a second roll (21) and forming irregularities thereon an intermediate manufacturing process for overlaying a second sheet (3) on the first sheet (2) and bonding the second sheet (3) at the portions corresponding to the protrusions (14) of the first roll (11) in the first sheet (2) to form multiple first bonded sections (4) and obtain an intermediate composite sheet (1) and a bonding process for forming second bonded sections (5) on the intermediate composite sheet (1) using a third roll (31) having an irregular shape, which differs from the irregular shape of the first roll (11), on the circumferential surface. The second bonded sections (5) are formed in a pattern that connects one first bonded section (4) with another single first bonded section (4) adjacent thereto.本發明之複合片材之製造方法包括:凹凸賦形步驟,其使第1輥(11)與第2輥(21)之咬合部中咬入第1片狀物(2)並對其賦予凹凸;中間物製造步驟,其使第2片狀物(3)與第1片狀物(2)重疊,並使第2片狀物(3)接合於第1片狀物(2)中之對應於第1輥(11)之凸部(14)之部分而形成複數個第1接合部(4),從而獲得複合片材中間物(1);及接合步驟,其使用周面上具有與第1輥(11)之凹凸形狀不同之凹凸形狀的第3輥(31),於複合片材中間物(1)形成第2接合部(5)。第2接合部(5)係由連接1個第1接合部(4)及與其鄰接之另1個第1接合部(4)之圖案而形成。1‧‧‧複合片材1‧‧‧中間物2‧‧‧第1片狀物3‧‧‧第2片狀物10‧‧‧製造裝置11‧‧‧第1輥14‧‧‧凸部21‧‧‧第2輥22‧‧‧砧輥31‧‧‧第3輥34‧‧‧凹部35‧‧‧凸部40‧‧‧接合器件41‧‧‧第4輥
