Abstract: An irreversible tie strap in which the tieing strap comes in a roll including an elongated strap member having a multiplicity of holes, grooves or slots therein to accommodate a pair of mating tongues. The strap in roll form can be cut to any desired length, thereby facilitating an efficient strap which can be produced in a single mold and which can be cut to any desired length. Included in the present invention irreversible tie strap is a separate clasp member which includes a separating internal partition wall and a pair of oppositely disposed internally protruding tongues extending in the direction of the internal separating wall. The elongated strap member can be inserted through the separate clasp on either side of the partition wall such that the two ends of the elongated strap member can be pulled in the same direction and thereby create a loop which can be tightened to any desired loop size including a very small loop which is almost flush with the clasp.

Abstract: An irreversible tie strap in which the tieing strap comes in a roll including an elongated strip member having a multiplicity of holes, grooves or slots therein to accommodate a mating tongue. The strap in roll form can be cut to any desired length, thereby facilitating an efficient strap which can be produced in a single mold and which can be cut to any desired length. Included in the irreversible tie strap is a separate clasp member which can be attached to one end of the tie strap in a novel manner by which it is permanently affixed and which further can accommodate any desired hole or opening in the strap through an internal tongue which permits the strap to pass through the clasp member until the desired length is achieved and then locked in place by the tongue and groove arrangement.

Abstract: A method for making a plastic, relatively flexible stringer for a slide fastener is disclosed. The stringer blank is extruded in a relatively rigid U-shaped form and, subsequently, a plurality of longitudinally spaced, transverse slots are die cut in the stringer blank in order to provide a series of transverse, substantially parallel ladder-like portions wherein each of the ladder-like portions includes an interlocking head member. A plurality of longitudinally spaced apart seats are also formed by a die cutting step in order to define neck portions of reduced thickness about which the stitches are placed in order to secure the fabric to the stringer.

Abstract: A stringer method for making a plastic, relatively flexible stringer for a slide fastener is disclosed. The stringer blank is extruded in a relatively rigid U-shaped form and, subsequently, a plurality of longitudinally spaced, transverse slots are die cut in the stringer blank in order to provide a series of transverse, substantially parallel ladder-like portions wherein each of the ladder-like portions includes an interlocking head member. A plurality of longitudinally spaced apart seats are also formed by a die cutting step in order to define neck portions of reduced thickness about which the stitches are placed in order to secure the fabric to the stringer.