There is provided a side fastener chain. A plurality of elements are fixed on each of opposing edge portions of a pair of fastener tapes at a predetermined pitch. The elements include a base portion and a head portion. A ratio (Rt) of the sum dimension of a first partial thickness, which is measured from an upper surface of each element to an upper surfaces-side apex of the respective edge portion, and a second partial thickness, which is measured from a lower surface of the element to a lower surface-side apex of the edge portion, to a thickness of the element satisfies the following equation: 40%Rt. A ratio (Rtl) of the thickness of the element to the entire length of the element satisfies the following equation: 0<Rtl<60%.

There is provided a side fastener chain. A plurality of elements are fixed on each of opposing edge portions of a pair of fastener tapes at a predetermined pitch. The elements include a base portion and a head portion. A ratio (Rt) of the sum dimension of a first partial thickness, which is measured from an upper surface of each element to an upper surfaces-side apex of the respective edge portion, and a second partial thickness, which is measured from a lower surface of the element to a lower surface-side apex of the edge portion, to a thickness of the element satisfies the following equation: 40%Rt. A ratio (Rtl) of the thickness of the element to the entire length of the element satisfies the following equation: 0<Rtl<60%.

A slide fastener of the present invention includes: a first fastener stringer; a second fastener stringer; and a slider which couples or separates the first and second fastener stringers, in which the second fastener stringer separated from the slider is inserted into the slider wherein the first fastener stringer and the second fastener stringer are coupled in a vertical direction. Accordingly, a row of fastener elements of the second fastener stringer separated from the slider is inserted into the slider by first and second fastening members when a fixing pin and an insertion pin are coupled in a vertical direction, and as a result, the coupling operation is convenient.

A slide fastener of the present invention includes: a first fastener stringer; a second fastener stringer; and a slider which couples or separates the first and second fastener stringers, in which the second fastener stringer separated from the slider is inserted into the slider wherein the first fastener stringer and the second fastener stringer are coupled in a vertical direction. Accordingly, a row of fastener elements of the second fastener stringer separated from the slider is inserted into the slider by first and second fastening members when a fixing pin and an insertion pin are coupled in a vertical direction, and as a result, the coupling operation is convenient.

In a slide fastener, a back-side guide plate is formed in a tapered shape toward a front end portion side and provided with guide ribs on both right and left ends. The guide ribs stand to the front side and guide elements in right and left element lines to respective engagement positions in accordance with movement of a slider to the rear end portions side. A connection column is provided with a disengagement guide portion for performing disengagement of the elements in accordance with the movement of the slider to the other direction, and back side portions of the elements in the right and left element lines are guided by the guide ribs of the back-side guide plate in accordance with the movement of the slider to thereby perform engagement and disengagement of the elements.

In a slide fastener, a back-side guide plate is formed in a tapered shape toward a front end portion side and provided with guide ribs on both right and left ends. The guide ribs stand to the front side and guide elements in right and left element lines to respective engagement positions in accordance with movement of a slider to the rear end portions side. A connection column is provided with a disengagement guide portion for performing disengagement of the elements in accordance with the movement of the slider to the other direction, and back side portions of the elements in the right and left element lines are guided by the guide ribs of the back-side guide plate in accordance with the movement of the slider to thereby perform engagement and disengagement of the elements.

Open-ended slide fastener assemblies with improved operability. In some examples, the slide fastener assemblies are watertight and/or airtight. The slide fastener assemblies include one or more sliders and box and pin mechanisms integrated with the slide fastener. The pin mechanism need not be inserted into the box at the same time it is inserted into the slider, permitting the slide fastener to be operated even when it is not visible or easily accessible.

Open-ended slide fastener assemblies with improved operability. In some examples, the slide fastener assemblies are watertight and/or airtight. The slide fastener assemblies include one or more sliders and box and pin mechanisms integrated with the slide fastener. The pin mechanism need not be inserted into the box at the same time it is inserted into the slider, permitting the slide fastener to be operated even when it is not visible or easily accessible.

A pair of rows of laterally projecting teeth mounted on respective one ends from respective stringers to be moved from opposite sides of a locking plane to be engaged in the locking plane. The teeth include catches constructed to, when the teeth are in the locking plane, engage each other to lock the rows of teeth together.

A pair of rows of laterally projecting teeth mounted on respective one ends from respective stringers to be moved from opposite sides of a locking plane to be engaged in the locking plane. The teeth include catches constructed to, when the teeth are in the locking plane, engage each other to lock the rows of teeth together.