The present invention aims to provide method and apparatus for making a disposable diaper improved so that a region of the continuous elastic predetermined to extend across the middle of the crotch region may be attached to continuous web in a desired condition. A method for making a disposable diaper 10 includes the steps of, (A) coating a first surface 102A of a first web 102 with an adhesive 130 to define an adhesion region 131 extending from first side edge 106 toward second side edge 107 in a cross direction CD and a non-adhesion region 134 extending along the second side edge 107 in a machine direction MD (B) rocking the continuous elastic 104 by a rocker arm 113 in the cross direction CD and thereby laying the continuous elastic 104 on the first surface 102A of the first web 102 in a curved pattern such that the continuous elastic 104 may have crest-segments 104a each curving convexly toward the first side edge 106, trough-segments 104b each defined between a pair of the adjacent crest-segments 104a and curving concavely from the first side edge 106 and intermediate segments 104c connecting the crest-segments 104a to the trough-segments 104b (C) attaching the continuous elastic 104 including the trough-segments 104b and the intermediate segments 104c but except the trough-segments 104b to the first surface 102A of the first web 102 in the adhesion regions 131 by a first pressure roll 112 and (D) putting flat and bonding together the first web 102 and the second web 105 by a second pressure roll 118.本發明要提供一種用後即棄式紙尿布的製造方法及其製造裝置,能將連續彈性構件的對應於胯部區域的中央部的部位,以所需要的狀態固定於連續網部。用後即棄式紙尿布(10)的製造方法,是包含有:在第一網部(102)的第一面部(102A)塗佈黏接劑(130)、(132),區劃出,從第一側緣(106)朝向第二側緣(107)而朝交叉方向(CD)延伸的黏接區域(131)、(133)、與沿著第二側緣(107)朝機械方向(MD)延伸的非黏接區域(134)的黏接劑塗佈步驟(101);將連續彈性構件(104),藉由擺動導件(113)朝與製造時的機械方向(MD)交叉的方向(CD)擺動,以讓連續彈性構件(104)具有:朝向第一側緣(106)凸出的凸部(104a)、位於相鄰的上述凸部(104a)之間,相對於第一側緣(106)凹入的凹部(104b)、及將凸部(104a)與上述凹部(104b)連接的中間部(104c)的方式,彎曲狀地連續配置在第一網部(102)的第一面部(102A)的橫動步驟(103);藉由第一加壓滾子(112),將連續彈性構件(104)之中的除了
