Ykk Corporation

Yoshiyuki Toishi

Naoki Kondo

Hideji Maeda

Yoneo Yoshida

Satoshi Matsumura

Taishin Kameda

Tatsuo Ito

There are provided left and right gripper devices for holding left and right tip side portions of a slide fastener chain, transferring the fastener chain in a longitudinal direction (an X-axis direction) and opening and closing the left and right tip side portions in a Y-axis direction orthogonal to the X-axis direction based on a command sent from operation control means. There is provided an electric motor for controllably driving the left and right gripper devices in the X-Y axis direction based on a command sent from a numeric control section of the operation control means in the X-Y axis direction of the gripper devices. A slider can be automatically inserted by only a specified operation using a single device without preparing a special device for all types of fastener chains and sliders and requiring a time for a considerable reconstruction.

Finishing apparatus for slide fastener

A stopper portion has a minute protrusion on part of an outer peripheral face except a side face in the length direction of a fastener tape. This protrusion is a rib-like protrusion extended linearly in the length direction of the fastener tape formed on a vertex of the surface of a bent portion, a protrusion extended so as to be expanded in a curved shape in the length direction of the fastener tape or a rib-like protrusion protruded along a boundary portion between the bent portion of the stopper portion and a bottom face thereof. Existence of this protrusion not only reduces a sliding resistance when the slider is started but also eliminates prickly feeling and feeling of disharmony originating from a shape of an upper stopper which is a kind of the conventional stopper portion.

Slide fastener

A weld portion produced by heat welding and a non-weld portion which does not undergo heat welding are formed on a contact face between an inside face of a stopper portion made of synthetic resin and a surface of a fastener tape. Preferably, a bottom end face of a rear side of the stopper portion is made substantially flush with a rear surface of the fastener tape by heating with pressure. Consequently, embrittlement of the stopper portion is prevented and its fixing strength is secured, thereby eliminating itchy feeling and feeling of discomfort originating from a configuration of the upper stopper portion.

Growing community of inventors

Toyama-ken, Japan

Yoshiyuki Toishi