Abstract: A double-sided engaging element for a slide fastener, comprising a central elevated portion elevated from a coupling base surface; and a pair of right and left projecting portions formed to project from a body portion toward the central elevated portion and to be elevated from the coupling base surface, wherein a central elevated portion of a mating element is detachably coupled in a dent surrounded by the central elevated portion, the right and left projecting portions and a stepped surface. A dimension (T0) between inside elevation startup edges of the right and left projecting portions is set smaller than a dimension (R0) between right and left elevation startup edges of the central elevated portion, and a first missing portion is formed on an outside corner of an end portion of each of the right and left projecting portions opposing the central elevated portion.

Abstract: A fastener stringer continuous manufacturing apparatus which eliminates a necessity of increasing a size of a manufacturing apparatus and is capable of chamfering attaching legs of an engaging element which is produced continuously from a metallic wire rod having a Y-shaped section, securely and accurately, without changing a load and stroke of a pressurizing hammer, the manufacturing apparatus comprises a pair of chamfering punches each of which is disposed above the pressurizing hammer at a height corresponding to a preceding engaging element implanted to a fastener tape in advance, the chamfering punch reciprocating with respect to a side face of the preceding engaging element and having a chamfering face which chamfers outer ridge portions of right and left legs of the preceding engaging element.

Abstract: A double-sided engaging element for a slide fastener, comprising a central elevated portion elevated from a coupling base surface; and a pair of right and left projecting portions formed to project from a body portion toward the central elevated portion and to be elevated from the coupling base surface, wherein a central elevated portion of a mating element is detachably coupled in a dent surrounded by the central elevated portion, the right and left projecting portions and a stepped surface. A dimension (T0) between inside elevation startup edges of the right and left projecting portions is set smaller than a dimension (R0) between right and left elevation startup edges of the central elevated portion, and a first missing portion is formed on an outside corner of an end portion of each of the right and left projecting portions opposing the central elevated portion.

Abstract: The invention provides a feeding unit for a metallic linear material having an irregular shaped section applicable to a continuous manufacturing apparatus for a fastener stringer, the feeding unit comprising the seventh and eighth rollers rotatably supported at their fixed positions, the ninth and tenth rollers opposing the seventh and eighth rollers and rotatably supported at both ends of a movable roller support member, wherein the roller support member is rotatably supported around its center and urged elastically in a direction perpendicular to a straight line connecting the centers of roller shafts of the seventh and eighth rollers, thereby the feeding roller protecting the metallic linear material from easily slipping out of feeding rollers, returning the linear material to its original track immediately even if the linear material slips out for a while, and feeding the metallic linear material stably and securely without damaging the linear material or ratchet wheel.

Abstract: A fastener stringer continuous manufacturing apparatus which eliminates a necessity of increasing a size of a manufacturing apparatus and is capable of chamfering attaching legs of an engaging element which is produced continuously from a metallic wire rod having a Y-shaped section, securely and accurately, without changing a load and stroke of a pressurizing hammer, the manufacturing apparatus comprises a pair of chamfering punches each of which is disposed above the pressurizing hammer at a height corresponding to a preceding engaging element implanted to a fastener tape in advance, the chamfering punch reciprocating with respect to a side face of the preceding engaging element and having a chamfering face which chamfers outer ridge portions of right and left legs of the preceding engaging element.

Abstract: The invention provides a feeding unit for a metallic linear material having an irregular shaped section applicable to a continuous manufacturing apparatus for a fastener stringer, the feeding unit comprising the seventh and eighth rollers rotatably supported at their fixed positions, the ninth and tenth rollers opposing the seventh and eighth rollers and rotatably supported at both ends of a movable roller support member, wherein the roller support member is rotatably supported around its center and urged elastically in a direction perpendicular to a straight line connecting the centers of roller shafts of the seventh and eighth rollers, thereby the feeding roller protecting the metallic linear material from easily slipping out of feeding rollers, returning the linear material to its original track immediately even if the linear material slips out for a while, and feeding the metallic linear material stably and securely without damaging the linear material or ratchet wheel.

Abstract: A continuous manufacturing apparatus for a fastener stringer, the apparatus comprising a tape guide capable of meeting sufficiently not only a conventional manufacturing speed but also acceleration of the manufacturing speed in recent years and generating no missing of an engaging element, wherein the tape guide includes a pair of nipping guide pieces which nip and guide a fastener tape, and urging means for elastically urging a core thread portion of an engaging element attaching edge portion of a fastener tape nipped by the nipping guide pieces toward a space between legs of an engaging element positioned and supported by a forming die, and wherein the core thread portion is pressed against a crotch of the engaging element securely with a predetermined pressing force by urging of the urging means and the engaging element is implanted firmly on the fastener tape under the state.

Abstract: An air/water-tight slide fastener has an end stop. The end stop has a flange portion extending therearoud. At least part of the flange is extensive enough to be integrally fixed to the opening edges of an opening formed in an article. Since the flange portion is firmly clamped by and between the air/water-tight fastener tape and the opening edges of the opening of the article; when the air/water-tight slide fastener is folded on itself; the excessive bending stresses exerted directly on the air/water-tight fastener tape is relaxed or mitigated. The air/water-tight fastener tape is thus prevented from being peeled off at that position.

Abstract: A flexible container for liquid transport made of a flexible material includes a top face portion, a bottom face portion, and a peripheral face portion connecting the top face portion and the bottom face portion. An air tight, water resistant slide fastener is openably/closably mounted to the peripheral face portion of the container. A liquid stirring port is provided at the top face portion, and a liquid injecting and ejecting port are provided at a lower end of a rear face portion of the peripheral face portion. Container suspending pieces and bottom face portion fixing pieces are mounted at the top face portion of the container and at four corners of the bottom face portion. During washing, the container can be washed reliably and efficiently while the inside of the spread out container can be visually checked by efficiently utilizing the air tight, water resistant slide fastener, liquid stirring port, liquid injecting and ejecting port, and container suspending pieces, and bottom face port fixing pieces.

Abstract: An air/water-tight slide fastener has an end stop. The end stop has a flange portion extending therearoud. At least part of the flange is extensive enough to be integrally fixed to the opening edges of an opening formed in an article. Since the flange portion is firmly clamped by and between the air/water-tight fastener tape and the opening edges of the opening of the article; when the air/water-tight slide fastener is folded on itself; the excessive bending stresses exerted directly on the air/water-tight fastener tape is relaxed or mitigated. The air/water-tight fastener tape is thus prevented from being peeled off at that position.

Abstract: A flexible container for liquid transport made of a flexible material includes a top face portion, a bottom face portion, and a peripheral face portion connecting the top face portion and the bottom face portion. An air tight, water resistant slide fastener is openably/closably mounted to the peripheral face portion of the container. A liquid stirring port is provided at the top face portion, and a liquid injecting and ejecting port are provided at a lower end of a rear face portion of the peripheral face portion. Container suspending pieces and bottom face portion fixing pieces are mounted at the top face portion of the container and at four corners of the bottom face portion. During washing, the container can be washed reliably and efficiently while the inside of the spread out container can be visually checked by efficiently utilizing the air tight, water resistant slide fastener, liquid stirring port, liquid injecting and ejecting port, and container suspending pieces, and bottom face port fixing pieces.

Abstract: A flexible container for liquid transport made of a flexible material includes a top face portion, a bottom face portion, and a peripheral face portion connecting the top face portion and the bottom face portion. An air tight, water resistant slide fastener is openably/closably mounted to the peripheral face portion of the container. A liquid stirring port is provided at the top face portion, and a liquid injecting and ejecting port are provided at a lower end of a rear face portion of the peripheral face portion. Container suspending pieces and bottom face portion fixing pieces are mounted at the top face portion of the container and at four corners of the bottom face portion. During washing, the container can be washed reliably and efficiently while the inside of the spread out container can be visually checked by efficiently utilizing the air tight, water resistant slide fastener, liquid stirring port, liquid injecting and ejecting port, and container suspending pieces, and bottom face port fixing pieces.

Abstract: A flexible container for liquid transport made of a flexible material includes a top face portion, a bottom face portion, and a peripheral face portion connecting the top face portion and the bottom face portion. An air tight, water resistant slide fastener is openably/closably mounted to the peripheral face portion of the container. A liquid stirring port is provided at the top face portion, and a liquid injecting and ejecting port are provided at a lower end of a rear face portion of the peripheral face portion. Container suspending pieces and bottom face portion fixing pieces are mounted at the top face portion of the container and at four corners of the bottom face portion. During washing, the container can be washed reliably and efficiently while the inside of the spread out container can be visually checked by efficiently utilizing the air tight, water resistant slide fastener, liquid stirring port, liquid injecting and ejecting port, and container suspending pieces, and bottom face port fixing pieces.

Abstract: A flexible container for liquid transport made of a flexible material includes a top face portion, a bottom face portion, and a peripheral face portion connecting the top face portion and the bottom face portion. An air tight, water resistant slide fastener is openably/closably mounted to the peripheral face portion of the container. A liquid stirring port is provided at the top face portion, and a liquid injecting and ejecting port are provided at a lower end of a rear face portion of the peripheral face portion. Container suspending pieces and bottom face portion fixing pieces are mounted at the top face portion of the container and at four corners of the bottom face portion. During washing, the container can be washed reliably and efficiently while the inside of the spread out container can be visually checked by efficiently utilizing the air tight, water resistant slide fastener, liquid stirring port, liquid injecting and ejecting port, and container suspending pieces, and bottom face port fixing pieces.

Abstract: A method and apparatus for forming a slide-fastener coupling element from a metal wire having a substantially Y-shaped cross section wherein a blank piece is cut or sliced off from the metal wire by a co-action between a cutoff die and a cutoff punch, and substantially at the same time, the metal wire is chamfered along a next cutting line by a chamfering edge so as to form a substantially V-shaped groove extending in and along the peripheral surface of a head portion of the metal wire and the outside surface of each of two opposed leg portion of the metal wire. The next slicing operation produces a blank piece which is already chamfered at its upper and lower peripheral edges extending along the peripheral surface of the head portion and the outside surfaces of respective leg portions of the blank piece.

Abstract: A blank wire of a generally Y-shape cross section is supplied intermittently at a predetermined pitch, during which the blank wire is successively cut transversely into slices of a predetermined thickness. A bulge is formed at a time for a head portion of each of the successive coupling elements and the resulting individual coupling element is collected. Subsequently to the forming of the individual bulge, opposite leg portions of the individual coupling element are pre-clenched to such an extent as to prevent any crack from occurring in a possible surface-treated section of the coupling element when the opposite leg portions are clenched for attaching the coupling element to a slide fastener tape.

Abstract: As it is intermittently supplied, a blank wire having a generally Y-shape cross section is cut into slices of a predetermined thickness by a cutting punch, which is fixed to the frame, and a coacting cutting die, which is reciprocatingly movable in the cutting direction. Then a bulge is formed on the head portion of the cut coupling element by a bulge forming die, which is connected with the forward end in stroke direction of the cutting die, and a coacting bulge forming punch, which is movable upwardly and downwardly. The cutting punch is equipped with preventing means on the upper side of the end of a blade for preventing the cut coupling element from jumping up from the blade, so that a bulge can be formed on the head portion reliably, without giving any damage to peripheral equipments.

Abstract: In a slide fastener coupling element forming apparatus, a blank wire of a generally Y-shape cross section intermittently supplied at a predetermined pitch is cut off into pieces of a predetermined thickness by a fixed cutting punch and a reciprocating cutting die, and then a bulge for the head portion of a coupling element is formed by a forming die and a forming punch movable upwardly and downwardly to coact with the forming die. The forming die is located to be connected with the forward end in the stroke direction of the cutting die, and the forming punch is located upwardly of the bulge forming station. Then the opposite leg portions of a coupling element are pushed out of the mold of the forming die by a vertically movable ejector pin located under the leg portions on the forming die to discharge the formed coupling element from the forming die.

Abstract: A fluid-tight slide fastener of the type in which an inner longitudinal edge portion of each of opposed tapes is folded so as to extend around base portions of successive I-shaped coupling elements and in which successive U-shaped first clamping strips surround, in clinched form, the folded edge portion over the base portion of the respective coupling element, each of opposed top stops includes an elongate plate of an I-shaped cross section corresponding to the shape of the coupling elements and having a base part surrounded by the folded edge portion of the tape, and a second clamping strip of a C-shaped cross section corresponding to the shape of the first clamping strips and surrounding, in clinched form, the folded edge portion over the base part of the elongate plate. When the slide fastener is fully closed, the opposed top stops are entirely received in the guide channel of a slider.

Abstract: Improved method and apparatus for feeding a conductive wire for anodizing process of a slide fastener chain are disclosed in which a wire guide member reciprocates perpendicularly to the feeding movement of the fastener tape so that the distance between the upper end of the guide member and the lastly secured fastener element decreases as the guide member moves from a position spaced from the beaded portion of the tape to a position close to the beaded portion, thereby giving appropriate slack to the wire. The fastener elements are secured to the beaded portion of the tape when the guide member is in the position close to the beaded edge. Therefore, possibility of breaking the wire is minimized.