Fastener stringer and method for manufacturing fastener stringer
AssigneeYKK Corporation
InventorsYoshito Ikeguchi, Masaki Meiwa, Yukako Nakamura, Hayato Iwamura
Life of this patent
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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.
Claims8
A fastener stringer for a concealed slide fastener including a knitted fastener tape and a plurality of fastener elements attached to an element attaching portion of the fastener tape with machine sewing yarns, the fastener tape including 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, the doubled-tape portion including the element attaching portion, 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 include at least one wide wale having a second wale width that is greater than a first wale width of the wale forming the tape main body portion.
A method for manufacturing a fastener stringer for a concealed slide fastener including a knitted fastener tape and a plurality of fastener elements attached to an element attaching portion of the fastener tape with machine sewing yarns, the fastener tape including 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, the doubled-tape portion including the element attaching portion, wherein the method comprises:
- knitting the fastener tape in which at least a chain stitch yarn is included in each wale forming the tape main body portion and a water-soluble chain stitch yarn is included in at least one of wales forming the doubled-tape portion;
- sewing the plurality of fastener elements to the element attaching portion of the knitted fastener tape by a sewing processing using a sewing machine;
- and
- dissolving and removing the water-soluble chain stitch yarn of the fastener tape to which the plurality of fastener elements are sewn to form, in the doubled-tape portion, at least one wide wale having a second wale width that is greater than a first wale width of the wale forming the tape main body portion.
Dependencies are inferred from the claim text.