The present invention includes: a transport mechanism that transports a lower belt-shaped member and an upper belt-shaped member in a transport direction an adhesive-area forming mechanism that applies an adhesive on both sides of a cutting position in the transport direction of at least one of the lower belt-shaped member and upper belt-shaped member to form adhesive areas thereon an elastic member arrangement mechanism that arranges a plurality of elastic members stretched in the transport direction so that portions thereof overlap the adhesive areas a superposing mechanism that superposes the lower belt-shaped member and upper belt-shaped member so as to sandwich the elastic members and an elastic member cutting mechanism having a first cutter that cuts the plurality of elastic members between two cutting positions adjacent in the transport direction and between two adhesive areas adjacent in the transport direction, a second cutter that cuts the elastic members at the cutting position, and an operation member that supports the first cutter and second cutter and operates the same in a predetermined direction.Esta invención incluye: un mecanismo de transporte que transporta, en una dirección de transporte, un elemento inferior con forma de cinturón y un elemento superior con forma de cinturón un mecanismo formador de área adhesiva que forma un área adhesiva al adherir un adhesivo a ambos lados en la dirección de transporte de una posición de corte a al menos uno del elemento inferior con forma de cinturón y el elemento superior con forma de cinturón un mecanismo de disposición de elemento elástico que dispone un parte de una pluralidad de elementos elásticos en un estado estirado en la dirección de transporte para superponerse en el área adhesiva un mecanismo de superposición que superpone el elemento inferior con forma de cinturón y el elemento superior con forma de cinturón para emparedar los elementos elásticos y un mecanismo de corte de elemento elástico inclu
