Provided is a fastener stringer including a row of metal elements having a plating film formed with improved thickness uniformity without waste, even if the elements are not electrically connected to each other in advance. For each of ten adjacent metal elements of the fastener stinger, 0.6D.sub.1/A.sub.12.0 is satisfied in which A.sub.1 represents an average value of thickness of the plating film for the ten metal elements at element center on either one main surface side of the fastener tape, and D.sub.1 represents thickness of the plating film for each of the metal elements at the element center on the one main surface side of the fastener tape.

Provided is a fastener stringer including a row of metal elements having a plating film formed with improved thickness uniformity without waste, even if the elements are not electrically connected to each other in advance. For each of ten adjacent metal elements of the fastener stinger, 0.6D.sub.1/A.sub.12.0 is satisfied in which A.sub.1 represents an average value of thickness of the plating film for the ten metal elements at element center on either one main surface side of the fastener tape, and D.sub.1 represents thickness of the plating film for each of the metal elements at the element center on the one main surface side of the fastener tape.

An element is configured to be installed together with a tape to form a fastener stringer, and includes: a main body including an upper main body and a lower main body; an installing portion for installing the tape; a head; and a neck connecting the main body and the head, wherein at least one of the upper main body and the lower main body includes a convex portion and a base portion, the convex portion protrudes from the base portion and extends in the left-right direction at an intermediate position in the front-rear direction. An inclined portion inclined downward along the left-right direction is formed on at least one side of the head along the upper-lower direction, and protrusions extending in the front-rear direction are formed on both sides of the convex portion.

A first stop member includes a first base and a first insert that is positioned between the first base and a first fastener element and is inserted into the slider via a rear mouth of a slider. A second stop member includes a second base and a second insert that is positioned between the second base and a second fastener element and is inserted into the slider via a second slit of the slider. The second insert moves toward the second slit of the slider in accordance with at least one or respective rotations of the first and second bases. A rotational axis with respect to the at least one or respective rotations of the first and second bases is positioned between the first tape region and the second tape region.

A fastening element may comprise a first panel and the second panel. The first panel may have a first longitudinal edge and the second panel may have a second longitudinal edge. The second longitudinal edge may be spaced from the first longitudinal edge to form a curvilinear gap. The fastening element may comprise a fastening mechanism coupled to the first longitudinal edge using an adhesive. The fastening mechanism may comprise a zipper tape and a plurality of teeth. The zipper tape may be configured by applying the adhesive on at least a portion of the zipper tape and cutting through the adhesive and zipper tape to define a plurality of cut-outs in the zipper tape.

A fastening element may comprise a first panel and the second panel. The first panel may have a first longitudinal edge and the second panel may have a second longitudinal edge. The second longitudinal edge may be spaced from the first longitudinal edge to form a curvilinear gap. The fastening element may comprise a fastening mechanism coupled to the first longitudinal edge using an adhesive. The fastening mechanism may comprise a zipper tape and a plurality of teeth. The zipper tape may be configured by applying the adhesive on at least a portion of the zipper tape and cutting through the adhesive and zipper tape to define a plurality of cut-outs in the zipper tape.

Provided is a fastener stringer including a row of metal elements having a plating film formed with improved thickness uniformity without waste, even if the elements are not electrically connected to each other in advance. For each of ten adjacent metal elements of the fastener stinger, 0.6D.sub.1/A.sub.12.0 is satisfied in which A.sub.1 represents an average value of thickness of the plating film for the ten metal elements at element center on either one main surface side of the fastener tape, and D.sub.1 represents thickness of the plating film for each of the metal elements at the element center on the one main surface side of the fastener tape.

Provided is a fastener stringer including a row of metal elements having a plating film formed with improved thickness uniformity without waste, even if the elements are not electrically connected to each other in advance. For each of ten adjacent metal elements of the fastener stinger, 0.6D.sub.1/A.sub.12.0 is satisfied in which A.sub.1 represents an average value of thickness of the plating film for the ten metal elements at element center on either one main surface side of the fastener tape, and D.sub.1 represents thickness of the plating film for each of the metal elements at the element center on the one main surface side of the fastener tape.

A multi airtight type rail zipper may be attached to or installed on a flexible material, such as an envelope, for storing an object. The multi airtight type rail zipper includes a first zipper rail, a second zipper rail formed in a shape corresponding to that of the first zipper rail, and a slider provided to surround the first zipper rail and the second zipper rail such that, according to the direction of sliding movement, the first zipper rail and the second zipper rail engage with and are fastened to each other, or disengage and are unfastened from each other. The multi airtight type rail zipper can improve the sealing force by the more stable fastening structure.

An ultra-thin plastic steel zipper includes: a pair of zipper fabric belts; two sets of teeth, respectively distributed along a direction of the pair of zipper fabric belts and engaged onto an inner side of each zipper fabric belt; a zipper head; a pair of top stops; and a bottom stop; the upper surface and the lower surface of the tooth are composed of three surfaces comprising a flat surface, a tapered surface, and a vertical surface, both an upper surface and a lower surface of the tooth has a tapered structure from the tooth head to the tooth tail, the overall volume of the teeth is significantly reduced, and the thickness and volume of the central line of the fabric belt are reduced, the established appearance of the plastic steel zipper is improved.