Abstract: A fastener stringer for a concealed slide fastener in which a knitted fastener tape has a tape main body portion and a doubled-tape portion that is formed by extending in a width direction from the tape main body portion and being folded back, wherein at least a chain stitch yarn is included in each wale forming the tape main body portion, and wales forming the doubled-tape portion have at least one wide wale having a second wale width that is greater than the first wale width of the wale forming the tape main body portion. The doubled-tape portion of the fastener tape can thereby be provided with superior flexibility.

Abstract: Fastener stringer may include a knitted fastener tape, and a fastener element attached to the fastener tape. The fastener tape may include a first side-edge portion where the fastener element is provided, a second side-edge portion provided at an opposite side of the first side-edge portion, and a tape main portion provided between the first and second side-edge portions. The first side-edge portion may include one or more chain-stitch yarns formed in one or more wales. The second side-edge portion may not include a chain-stitch yarn. The tape main portion may include M or more chain-stitch yarns formed in M or more wales. M may indicate a natural number equal to or greater than one third of the total number of wales included in the fastener tape. Difference in yarn density may be caused between the tape main portion and the second side-edge portion.

Abstract: Fastener stringer may include a knitted fastener tape, and a fastener element attached to the fastener tape. The fastener tape may include a first side-edge portion where the fastener element is provided, a second side-edge portion provided at an opposite side of the first side-edge portion, and a tape main portion provided between the first and second side-edge portions. The first side-edge portion may include one or more chain-stitch yarns formed in one or more wales. The second side-edge portion may not include a chain-stitch yarn. The tape main portion may include M or more chain-stitch yarns formed in M or more wales. M may indicate a natural number equal to or greater than one third of the total number of wales included in the fastener tape. Difference in yarn density may be caused between the tape main portion and the second side-edge portion.

Abstract: A fastener element for slide fasteners where the color and pattern change diversely with viewing angle. A coiled fastener element for slide fasteners that is to be furnished on a fastener tape, wherein the fastener element is provided with an engagement head, an upper leg, a lower leg, and inverting part for connecting the upper leg with the lower leg; a coating comprising at least one light-transmissive layer is formed on at least the upper leg; and the thickness of the light-permeable layer is formed so as to decrease gradually from the approximate top of the upper leg to the fastener tape side and so that the layer thickness near the top is at most about 50-1500 nm.

Abstract: A fastener element for slide fasteners where the color and pattern change diversely with viewing angle. A coiled fastener element for slide fasteners that is to be furnished on a fastener tape, wherein the fastener element is provided with an engagement head, an upper leg, a lower leg, and inverting part for connecting the upper leg with the lower leg; a coating comprising at least one light-transmissive layer is formed on at least the upper leg; and the thickness of the light-permeable layer is formed so as to decrease gradually from the approximate top of the upper leg to the fastener tape side and so that the layer thickness near the top is at most about 50-1500 nm.