Method for manufacturing product with slide fastener, product with slide fastener, and stringer member

The present invention is a method for manufacturing a tape slide fastener product (1) by sewing a stringer member (10, 10a-10f) and a fastener attachment member (5), the method comprising: a step for preparing the stringer member (10, 10a-10f), the stringer member (10, 10a-10f) having a coil-shaped fastener element (21), a support member (30, 30b-30f), and a connection part (41, 13a, 14a) that connects an element row (20) and a support body (31, 32, 33, 34, 35, 36, 37, 38); a stringer attachment step in which the stringer members (10, 10a-10f) and the fastener attachment member (5) are sewed in a state in which the linking sections (41, 13a, 14a) of the stringer members (10, 10a-10f) are overlapped with the fastener attachment member (5), and a stringer attachment step in which the stringer members (10, 10a-10f) and the fastener attachment member (5) are sewed in a state in which the linking sections (41, 13a, 14a) of the stringer members (10, 10a-10f) are overlapped with the fastener attachment member (5); a