KR820001633B1 - A coupling element assembly for slide fasteners - Google Patents

Abstract

Slide fastener stringer comprises a wrap-knit tape(31) carrying a row of spaced coupling teeth(30) along one edge, the legs(3, 4) of the teeth having embedded in them two spaced wales(6, 6' , 7, 7') of chain stitches, one or both of which include a reinforcing thread (32) interlaced on interknitted with the chain stitches & with portions running across the wales & pref. embedded in the full length of the legs of the teeth. Prdf. a core thread pair extends lengthwise betweenthe two chain-stitch wales. Coupling teeth of relatively soft moulded plastics are firmly anchored.

Description

Synthetic Resin Fastener Elements

1 is an enlarged plan view showing a state in which a fastener element string is sealed to a fastener tape according to an embodiment of the present invention.

2 is a partial cutaway section.

3 is an enlarged perspective view showing a coupling structure of a fastener element and a warp knitting rod in a state before being curved in a U shape.

4 is a schematic longitudinal cross-sectional view of a fastener element portion.

5 is an organization chart of the warp wing shown in FIG.

6 is a schematic plan view showing the arrangement relationship between the die for extrusion molding and the warp knitting zone.

7 is a cross-sectional view taken along line 6-X in FIG.

8 is a schematic longitudinal sectional view of the fastener element formed in the apparatus shown in FIGS. 6 and 7;

9 is a schematic enlarged longitudinal sectional view of the warp band portion between the fastener elements.

10 and 11 are enlarged side views schematically showing, in partial cross section, fastener elements having different arrangements of warp bands.

12 is a schematic enlarged side view showing the fastener tape bonded fastener element in partial cross section.

13 is a schematic enlarged side view of a fastener element in which upper and lower portions are welded.

FIG. 14 is a schematic enlarged longitudinal sectional view of a die portion for forming the fastener element shown in FIG.

Fig. 15 is a schematic enlarged side view of the molded article.

16 is an explanatory diagram of the welding process of the upper and lower parts of the fastener element;

FIG. 17 is a schematic enlarged side view showing a state in which the fastener element shown in FIG. 13 is fixed to the fastener tape by a weaving means. FIG.

FIG. 18 is an enlarged plan view of the state shown in FIG. 17. FIG.

Fig. 19 is an enlarged plan view showing a state in which the fastener element is fixed to the fastener tape by the knitting means.

FIG. 20 is a schematic cross-sectional view of the X-X-X line of FIG. 19. FIG.

21a to j are organization charts of different embodiments of the warp knitted zone.

FIG. 22 is a schematic enlarged plan view illustrating one example of a row of fastener elements in which the warp band is integrally knitted with the fastener tape. FIG.

FIG. 23 is a schematic side view of the fastener element rows shown in FIG. 22 before the fastener elements are curved in a U-shape. FIG.

24, 25, and 26 are organization charts of embodiments in which a letter warp and a fastener tape are softly folded.

27, 28, and 29 are enlarged side views schematically showing embodiments in which upper and lower joint portions of fastener elements are different in the case where the warp knitted zone and the fastener tape are soft.

30 is an organization diagram of another embodiment in which the warp knit and the fastener tape are softened.

FIG. 31 is a schematic enlarged side view of a partially cut away fastener element row made using the warp belt shown in FIG.

FIG. 32 is a plan view showing a state in which a large number of fastener element rows due to the warp knit belt and the fastener tape are plied.

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a series of fastener elements made of synthetic resin mainly made by extrusion molding, in which the element connecting elements which are integrally embedded in the upper and lower portions of the fastener element and which have a series of individual fastener elements in a constant pitch are wound in the longitudinal direction of the fastener element rows. The combined strength of the warp knit and the individual fastener elements by the warp knitting including the knitting of the chain knitting structure to be formed and the knitting yarn incorporated in the direction intersecting with the wale. The purpose of the present invention is to provide a fastener element row that can greatly improve the elasticity of the fasteners and to maintain the proper elasticity required for the occlusion and opening between the individual fastener elements, and to easily control or manufacture the elasticity.

Already, several kinds of fastener elements which are wrought in series with individual fastener elements as threads have been proposed, but all have relatively smooth surface yarns as soft iron materials, and the threads are only embedded in the fastener elements. In this case, the bond strength between the elements is low, and thus the attachment strength is increased by adding a structure such as widening the width of each element or bending a seal portion embedded in the element. However, the addition of these structures has the drawback that the degree of processing becomes complicated, and the increase in the use material or the adjustment of the position and the tension is complicated. Moreover, in order to increase the strength of these fastener elements and the adhesive strength between the fastener tapes, it is common to use a tough yarn as the soft iron thread, so that the degree of expansion required for the occlusion or gap between the fastener elements is likely to be insufficient. Control was not possible at all.

The present invention obtains a fastener element train having a new configuration without the drawbacks and unreasonable points as described above by the configuration described in the claims.

1 to 5, one embodiment of the present invention is shown. Hereinafter, the configuration thereof will be described.

In these figures, the individual fastener elements (1), (2)... … Is first extruded from a thermoplastic synthetic resin into a straight line as shown in FIGS. 3 and 4, and then curved in a U-shape as shown in FIG. To form a fastener element.

This fastener element (1) (2)... … Wedges of warp knitting pieces 5 in the upper and lower corner portions 3 and 4 (in FIG. 3 and FIG. 4, the portions which are to be bent as U-shaped portions are indicated by the portions 3 and 4). A pair of grandfathers 6, 6 'and a pair of 7, 7' are integrally embedded.

The warp knitting rod 5 of the example of illustration is linearly continuous in the longitudinal direction LL of an element row, and is thus buried in a linear arrangement also in the corner parts 3 and 4, and this warp knitting band 5 is the said longitudinal direction LL. Knitting yarns 10, 11, 12, 13 and the knitting yarns forming the wales W ₁ , W ₂ , W ₃ , W ₄ and 14) (15) (16) (17) (18) (19).

5 is an organization chart of the warp knitting zone 5 shown in FIGS. 1 and 3, and the knitting yarns 10, 11, 12, and 13 are chain knitting structures represented by 1-0 / 0-1. Wales (W _1- W ₄ ) are formed, the knitting yarns 14 and 15 are enclosed to represent the organization of 0-0 / 2-2, and the knitting yarns 16 and 17 are 0-0. / 1-1 / 0-0 / 5-5 / 4-4 / 5-5 is represented, and knitting (18) (19) is 5-5 / 4-4 / 5-5 / 0-0 To be represented as an organization of / 1-1 / 0-0.

As a result, the knitting yarns 10 and 11 are connected in a trapezoidal shape by the knitting yarns 14, and the knitting yarns 12 and 13 are connected in a trapezoidal shape by the knitting yarns 15, and at the same time, the wale jaws 6 ( 6 ') and (7) (7') are also configured to be trapezoidally connected by knitting yarns 16-19. And in the example of illustration, the individual fastener elements (1) (2) ... in the part which the knitting yarns 16-19 drive in the weft direction. Is extruded, and the weft direction cylindrical portions of the knitting yarns 16-19 are also integrally embedded in the lengthwise direction of the respective parts in the respective fastener elements.

The warp knitted board 5 of the above-mentioned structure is extrusion-molded by the means as shown to FIG. 6, FIG. That is, the warp knit belt 5 is arrange | positioned as the predetermined | prescribed in the element forming cavity 21 of the fastener element shaping | molding die 20, and the mold | die is closed with the runner block 22, and sprue | screw is removed from sprue. The synthetic resin is extruded and the warp element 5 is integrally embedded and fixed in each part of the fastener element at the same time as the fastener element is formed by the resin filled in the cavity 21.

The die 20 described above has a recess for accommodating the warp-knife portions 24 and 25 to be positioned between the fastener elements 1 and 2 to be molded, in addition to the cavity 21, so that the warp-knife 5 is removed. Fix it in the correct position as shown in the figure. In addition, when the die 20 is made cylindrical and many cavities 21 are cut around the element pitch in accordance with the element pitch, the rotation in the direction of the arrow a and the movement in the direction of the arrow b of the warp stem 5 are carried out. By synchronizing with each other, as shown in FIG. 6, the element rows 26 parallel to each other at a predetermined pitch can be continuously formed.

FIG. 8 schematically shows the longitudinal section of the fastener element 27 formed by the apparatus shown in FIGS. 6 and 7.

Fastener elements (1) (2) by adjusting the kind of synthetic resin used in the extrusion molding by the above-described means, the melting temperature, and the degree of adhesion between the die 20 and the surface 28 where the runner block 22 comes into contact. … It is also possible to impregnate the molten resin in the warp knitted zone portions 24 and 25 exposed in between, and the degree of impregnation may be appropriately adjusted.

In addition, as shown in FIG. 9 in the space portion between the warp knitting portions 24 and 25 and the fastener elements 1 and 2 exposed by the minute spacing between the die 20 and the runner block 22. The thin film 29 of synthetic resin is inevitably formed.

Fastener elements (1) (2)... Formed as described above and formed as shown in FIGS. 3, 4 or 6 and 8. As shown in FIG. 1 and FIG. 2, U is bent in a U shape and fixed to the fastener tape 31 with the occlusal head 30 protruding.

The fastener element 1 shown in FIG. 2 protrudes each wale W ₁ -W ₄ of the warp knitted zone ₅ outward in the up and down directions of the corner portions ₃ and ₄ of the fastener element 1. Although it is disposed at the position and is sealed to the fastener tape 31 by the sewing thread 32, the arrangement of the warp knitted zone 5 in each part is shown in FIG. 10 as the wale W ₅ is opposed to the inner surface 33 of each part. The arrangement may protrude toward 34, and as shown in FIG. 11, the wales W ₆ -W ₉ . … It is arranged to protrude from the opposing inner surfaces 35 and 36 of the respective sections, and the edges of the fastener tape 39 are inserted into the grooves 37 and 38 between the wales W _{6 to} W ₉ . The swelling part 40 may be inserted and sealed, or it may be fixed by other methods.

FIG. 12 shows an embodiment in which the fastener element 41 and the fastener element 42 are integrally bonded by heat welding or bonding 43 by an adhesive. In this embodiment, slightly thick synthetic resin layers 41 'and 41 "covering the warp knitting zone are formed on the opposing inner surfaces of the upper and lower corner portions, so as to ensure adhesion or welding.

In each of the embodiments described above, the upper and lower portions of the fastener element are separated from each other, and the fastener tape is inserted therebetween, and the fastener tape is fixed to the fastener tape by sealing or bonding, but FIG. 13 shows the upper and lower corner portions 45 of the fastener element 44. The opposing inner surfaces 47 and 48 of 46 are integrally formed by the self-adhesive ability or adhesive of the thermoplastic synthetic resin forming the fastener element 44, and are welded or bonded.

The fastener element 44 of this embodiment is extruded by a die 50 with a cavity 49 as shown in FIG. 14, having the same configuration as the embodiment shown in FIGS. The warp knitting zone 51 is disposed so that the wale jaws 52 'and 53' positioned at both ends, i.e., the outer ends of the corner portions 45 and 46, are deeply immersed into the cavity 49, and the thermoplastic synthetic resin Extrusion is performed to form the material 55 of the fastener element 44 as shown in FIG. The material 55 has a relatively thick number between the wale jaws 52 'and 53' at both ends and the inner surface 56 to be the opposite inner surfaces 47 and 48 of the corner portions 45 and 46 described above. Strata layers 57 and 58 are formed,

As shown in FIG. 16, the material 55 is bent in a U-shape, is placed in close contact with the opposing resin layers 57 and 58, and the ultrasonic horns 59 are placed and operated so that the resin layers 57 and 58 are moved. Are melted and bonded together in a large area as shown in FIG.

In this embodiment, the degree of impregnation of the synthetic resin on the warp knitted zone 51 is larger than the latter in the wale troughs 52 ', 53' and (52) and 53 troughs of the warp knitted band. There is a difference in the impregnation conduction of the synthetic resin to the exposed portion of the warp band located between each part of the fastener element, and the wale-joins 52 and 53 located toward the occlusal head of the fastener element are slightly elastic and have a wale on the fastener tape side. As a result, the degree of expansion and contraction of the jaws 52 'and 53' is slightly decreased, so that it is possible to adapt to displacement of individual fastener elements at the time of occlusion or opening.

Further, the upper and lower portions of the fastener element 41 shown in FIG. 12 may be welded together using the synthetic resin layers 41 'and 41 "as in the embodiment shown in FIG.

FIG. 17 shows the fastener tape 60 being knitted while supplying the fastener element 44 rows in the inclined direction by using the portion of the warp band 54 positioned between the elements of the fastener element 44 shown in FIG. At the same time, an embodiment in which the weft thread 61 is integrally incorporated into the fastener tape 60 and fixed is shown.

FIG. 18 shows the core string 63 using the gap 62 formed on the occlusal head of the upper and lower corner portions 45 and 46 of the fastener element 44 shown in FIG. ) May be disposed in the inner space 44 'of the occlusal head at the time of machining shown in FIG. 16, and then placed in the gap 62 when the element rows are directly inserted.

In addition, the fastener elements 1 and 2 of the structure shown in FIGS. 3, 4 or 8 are also bent in a U-shape to weld or bond the upper and lower corner portions 3 and 4 directly to the opposite inner surfaces thereof. It can be fixed to the fastener tape by the weaving means as shown in FIG. 17 or FIG.

19 and 20, as shown in Figs. 1 to 18, the wale-joint portions 65, 65 ', 66, 66' of the warp-knife 64 are integrated into the respective portions 68, 69. This is an example in which a row of fastener elements 70, which are embedded in series, are integrally woven and fixed at the time of knitting the fastener tape 71 knitted in a warp knitting structure.

In the figure, the main portion of the fastener tape 71 forms a knitting yarn 72 that forms a chain knitting structure represented by a tissue of 1-0 / 0-1 and a tricot knitting tissue represented by a tissue of 1-0 / 1-2. It consists of a knitting yarn 73 and a knitting yarn 74 encased so as to be represented by 0-0 / 4-4. A reinforcement cord 71 'is lightly inserted into the side edge of the tape main body, and a cord 71 " The fastener element rows 70 are disposed, and the fastener element rows 70 are formed by the knitting yarn 72 'formed by the knitting yarn 72' formed to be located on the lower outer side of the lower leg portion 69. Knitting 73 'which forms a single cord knitting structure with a 1-0 / 4-3 structure between the wale W' and the wale and the innermost end wale W " Of the warp knit 64 positioned between the fastener elements 70 and 70 'by the knitting 74' encased in a 0-0 / 4-4 structure between (W ') and (W "). Narrowing the wale nails 65, 65 ', 66, 66' from both sides And, the addition and fixed by tightening the legs (69) toward the fastener tape (71).

The chain knitting structure by the knitting yarn 72 'forming the wale W ¹ described above is pulled toward the lower surface of the lower portion 69 as shown in FIG. 20 by the tension of the knitting yarns 73' and 74 '. Occupy a position away from the occlusal head.

In the above structure, when the knitting yarns 73 'and 74' are high shrink yarns having a high thermal contraction rate, the fastener elements 70 described above are firmly fastened to the fastener tape 71, and the wale W ¹ is fastened. It is good to pull it to the lower surface side of the lower leg part 69, and to stand still.

In the example shown, the fastener elements 70 rows have their upper and lower angular portions 68 and 69 bonded or welded on opposite inner surfaces 70 ".

In each of the above-described embodiments, all of the fastener elements in series are wrought iron warps, and those made of a knitted fabric shown in FIG. 5 are used. However, the structure is not limited to this, and FIGS. 21 (a)-(j The same tissues as indicated on the angular planes or those made of various tissues similar thereto can be used.

Knitting 75, 76, 77, 78 in the diagram shown in FIG. 21A is a chain knitting structure represented by 0-1 / 1-0 tissue of the knitting yarn 75 to form a wale, and the knitting yarn 79 ) 80 forms a wale with two needle fringestitches represented by 2-0 / 0-2 tissue, and the knitted yarn 81 is 4-4 / 3-3 / 4-4 / 0 -5 / 1-1 / 0-0 organization, and knitting yarn 82 is enlisted as organization of 0-0 / 1-1 / 0-0 / 4-4 / 3-3 / 4-4 The series of warp bands as shown in the figure is comprised.

What is shown in FIG. 21B is 5-5 / 4-4 / 5-5 / 0-0 / 1-1 / 0 made by the knitting yarn 83 instead of the knitting yarns 81 and 82 shown in FIG. 21A. 0-0 / 1-1 / 0-0 / 5-5 / 4-4 / 5-5 of the knitting yarns (83) (84) and the knitting yarns (85) formed so that they can be represented by -0 organizations. It has a knitting yarn 85, 86 that is entrusted to be represented as an organization.

Also shown in FIG. 21C are knitting yarns 87, 88, 89, 90 and knitting yarns 87 forming a structure represented by the 0-1 / 1-1 chain knitting structure formed by the knitting yarn 87. 1-1 / of the knitting yarns 91 and 92 and the knitting yarns 93 forming the 1-0 / 1-2 tricot knitting tissues connecting the tissues of the yarns 88 and the yarns 89 and 90, respectively. 5-5 / 4-4 / 5-5 / 0 formed by knitting yarns (93) (94) (95) (96) and knitting yarns (97) which are lightly inserted into each chain knitting tissue represented by the tissue of 0-0. The warp knitting band is comprised of the knitting yarns 97 and 98 entrusted to represent the organization of -0 / 1-1 / 0-0.

Shown in FIG. 21D are knitting yarns 99, 100, 101, 102, and 1-0 / 1- forming a chain knitting structure represented by 0-1 / 1-0 tissues formed by the knitting yarn 99. Knitting yarns 103 and 104 forming the tricot knitting tissue of 2 and knitting yarns 105 and 6-6 / 0-0 / incorporated into the tissues of 0-0 / 6-6 / 6-6 / 0-0. The warp knit band is comprised by the knitting yarn 106 enclosed by the organization of 0-0 / 6-6.

In Fig. 21 (e), knitting yarns 107, 108, 109, 110 and knitting yarns 107 form a chain knitting structure represented by 0-1 / 1-0 tissue formed by the knitting yarn 107. Knitting (111) (112) forming a double needle fringe knitting tissue of 2-0 / 0-2 tissue connecting the respective chain knitting tissues of (108) and knitting yarn (109) (110), respectively, 6-6 / 5 Between the knitting yarn 113 and the wale W ₁ (W ₂ ) and the wale W ₃ (W ₄ ) entrapped into the tissue of −5 / 6-6 / 0-0 / 1-1 / 0-0 It consists of the reinforcement inclinations 114 and 115 which respectively inserted in between.

Shown in FIG. 21F is a reinforcement inclination 116 and 117 inserted between the wales W5 and W6 of the tissue shown in FIG. 21B and between the wales W ₇ and W ₈ .

Also shown in FIG. 21G is the single code of the knitting yarns 118 and 119 represented by the 4-5 / 1-0 organization formed by the knitting yarn 118 instead of the organization of the knitting yarn 113 shown in FIG. 21E. It is added to the organization.

In this organization, the sinker loop portions 120 and 121 of the knitting yarns 118 and 119 are meandered between the wales W ₉ and W ₁₀ . A sinker loop portion 120 'which is buried approximately along the longitudinal direction of each part of the fastener element indicated by the dashed line (e) in the drawing and between glass parts of the sinker loop which is integrally coupled with the fastener element. (121 ') and when the fastener element string is bent in U, as shown in Figure 2, the sinker loop portions 120' and 121 'will be placed toward the occlusal head, It is not pressed by the occlusal head and does not inhibit the occlusion of the elements. In addition, when the synthetic yarns having high heat shrinkability are used as the knitting yarns 118 and 119, and thermally contracted using a fastener dyeing finishing process or the like, the portions 120 'and 121' are contracted and displaced toward the fastener tape. Does not interfere at all.

In addition, the sinker loop portions 120 and 121 positioned between the fastener elements are displaced to fit the element pitch with an appropriate heat setting device in the process before the fastener elements are extruded onto the warp plate, and then heat fixed. No extra knitting is left between the fastener elements so that the fastener elements are positioned in the sinker loop portion of the warp knitted band.

Shown in FIG. 21H is the light insertion of the knitting yarns 124 and 125 into the chain knitting structure formed by the knitting yarns 122 and 123, respectively, and the knitting yarns 126 to 0-. 0 / 1-1 / 0-0 / 4-4 / 3-3 / 4-4, and weave knitting (127) 4-4 / 3-3 / 4-4 / 0-0 / 1-1 / 0 It is entrusted with -0 respectively.

In Fig. 21i, the chain knitting structure represented by the 0-1 / 1-0 tissue formed by the knitting yarn 128 is formed by knitting yarns 128, 129, 130, and 131, and the knitting yarn 132 is formed on this. 5-5 / 0-0 of the knitting yarn 134 is formed by adding and forming a tricot knitting system represented by 1-0 / 1-2 tissue formed by the knitting yarn 132, 133. The entrapped tissue represented by the tissue is added to form the knitting yarn (134, 135). Even in this warp knitting zone, the knitting yarns 134 and 134 do not impede the fastening of the fastener elements like the thread portions 120 'and 121' of the warp knitting band in FIG. 21G.

In all the warp knitted bands described above, the wale nails respectively embedded in the upper and lower relief portions of the fastener element are integrally connected in series by some knitting yarns in the knitting yarns intersecting with the wale nails. Knitting yarns and wales yarns other than the partly weft knitting part form a part of the essential constituents which constitute the first feature of the present invention, and the whole warp knitting zone including the one-minute knitting yarn sandwiched in the above-mentioned piece is essential in another feature of the present invention. Forms part of the configuration.

However, the warp knitting zone shown in FIG. 21j is used for the structure by the said 1st characteristic, and the warp knitting zone embedded in each upper and lower part is knitted as independent separate each, and this figure has shown one warp knitting zone among them.

This warp knitted band forms a chain knitting structure of 0-1 / 1-0 tissue into the knitting yarns 136 and 137, and adds the two-needle fringe knitting tissue of the knitting yarn 138 to the knitting yarn 139, and adds the knitting yarn 139 to 2-2 /. It was transferred to the organization of 0-0.

Each of the tissues of FIGS. 21A to 21J described above is merely illustrative of some of the warp band tissues that are practically used in the present invention.

The embodiments described with respect to the angular planes of Figs. 1 to 21j are all separate warp yarns, including each part of the fastener element or each part and the occlusal part, which are separate from the fastener tape, and are sequentially softened by the warp knit tape. (Iii) The fastener element rows formed are fastened to the fastener tape edge by means of sealing, gluing, or welding.However, from 22 to 32, warp bands embedded in the upper and lower parts of the fastener element are continuously integrated with the fastener tape. Various examples which are enclosed by are shown. In these embodiments, as shown schematically in FIGS. 22 and 23, the warp plate 144 embedded in the upper and lower corner portions 141 and 142 and the occlusal portion 143 of the fastener element 140 is fastener. It is soft with the tape 147, and the warp knitted board 144 and the fastener element 140 are integrated by extrusion molding by the same means as each embodiment shown in FIGS. In addition, the molded element material 140 'is bent in a U-shape to form a fastener element as in the above-described respective embodiments.

FIG. 24 shows an example in which the warp knit and the fastener tape are knitted, and the fastener tape 148 forms a knitting yarn 149 forming a chain knitting structure, a knitting yarn 150 forming a tricot knitting structure, and a single cord knitting structure. It is formed by the knitting yarn 151, and the warp knitting zone 152 is softly knit on one edge thereof.

This warp knitting band 152 is a knitting yarn (154) (155) forming a tricot knitting system of 1-0 / 1-2 tissue in the entwined knitting yarn (14) (15) in the warp knitting tissue shown in FIG. ), And the part where the fastener element 158 is extruded by the light insertion of the reinforcing slope 156 and 157 between the wales of the chain piece structure constituting the wale roughening is not significantly different from that of FIG. .

25, the knitting yarns 159, 160, and 161 omitting the reinforcing inclined 156 and 157 in the warp knitting zone 152 shown in FIG. 24, and instead form a chain knitting structure. All or part of (162) is an embodiment in which a knitting yarn thicker or stronger than another knitting yarn is used, or the same yarn as another knitting yarn is piled up in multiple strands.

FIG. 26 is an embodiment in which knitting yarns 163 and 164 are used to form a single cord knitting structure instead of incorporating knitting in the structure of the warp knitting portion shown in FIG. 24. The knitting section that implements does not inhibit the occlusion of the fastener elements as described for the tissue in Figure 21g.

As shown in each of the above-described embodiments, the fastener element having the fastener tape and the warp knit band embedded in the upper and lower portions thereof is bent into a U-shape as schematically shown in FIG. 23, and then as shown in FIG. 27. 165 is inserted to integrate the upper and lower corner portions with the tape portion by a lock stitch or a double chain stitch, or the upper and lower corner portions are integrated with the overlock stitch 166 as shown in FIG.

FIG. 29 is an example of strengthening by integrating the upper and lower corner portions by bonding, welding, or the like as shown in FIG. 12 or 13, and then performing a stitch 167 such as a lock stitch or a chain stitch.

22 to 29 show an embodiment in which the fastener tape is woven into one of the wale jaws of the warp knitted belt embedded in the upper and lower corner portions of the fastener element, but FIG. 30 shows the upper and lower corner portions of the fastener element 168 (see FIG. 169) (170) When the fastener allelment 168 is bent in a U-shape at each edge of the warp knit 171 embedded in the two pieces, two fastener tape parts (173) (174) are also overlapped and integrally combined The fastener tape 175 is an embodiment made of the fastener element 168, and the upper and lower corner portions 169 and 170 and the fastener tape portions 173 and 174 of the fastener element 168 may be any of sealing, adhering, and welding.

FIG. 32 is a fastening element (180) in which a warp yarn having a structure shown in FIG. 24 and a fastener tape are integrally folded in a row with a connecting yarn 179. The extrusion of a group is simultaneously performed for each letter 176, 177, 178, and then the connecting yarn 179 is removed to show an application that handles multiple items.

In addition, it is preferable that the connecting yarn 179 can be dissolved and removed in a fastener dyeing process or the like as soluble.

As described above, in the first aspect of the present invention, each of the independent fastener elements is sequentially iron-wrapped by the warp knitting rods to form a single fastener element row, and the warp knits embedded in the upper and lower portions of the fastener elements are arranged in the longitudinal direction of the fastener element rows. It consists of a knitting yarn of chain knitting tissue forming a wale and a knitting yarn forming a tricot knitting tissue or a single cord knitting tissue integrally incorporated in a direction intersecting with a tooth tissue. In addition, since there is a main surface forming a plurality of irregularities, and there is always a tissue gap between adjacent knitting yarns, the synthetic resin forming the fastener element is solidly invaded and solidified by the above-mentioned unevenness or tissue spacing. The warp element has a simple straight line in each part of the fastener element. Placed by Not only come to require much additional structure shows an extremely have a strong bonding strength is obtained effect.

In addition, since the warp band itself has proper flexibility and elasticity as a characteristic of its structure, it is allowed to stretch the gap between the fastener elements when the fastener element occludes or opens, and the synthetic resin infiltrating the warp band when the fastener element is formed. The amount of can be controlled arbitrarily by selecting and adjusting the type of synthetic resin, the degree of adhesion of the die during molding, etc. There are various effects.

In addition, the inclined direction stretching of the fastener element string can be sufficiently suppressed within the necessary degree by the chain knitting structure and the knitting yarn incorporated to intersect it.

In addition, according to the second aspect of the present invention, in addition to the configuration of the first aspect described above, some knitting yarns among the knitting yarns incorporated in the direction intersecting the chain knitting structure are embedded along the longitudinal direction of each of the fastener elements, and the fastener elements are embedded. The fastener element embedded in the upper and lower corner portions of the fastener element is more firmly bonded, and each fastener element is knitted again along the longitudinal direction of each part, so that each corner part is unstretched, for example. When the absorbent is molded into a synthetic resin that is large, easy to deform, and soft and has abundant stretchability, the fastener element, particularly its occlusal head, has an effect of retaining sufficient strength with practical durability.

Claims (1)

The warp direction of each of the fastener elements including the knitting yarn of the chain knitting structure forming the wale and the knitting yarn incorporated in the direction intersecting the knitting yarn is disposed adjacent to each other, with the direction of the wale being the longitudinal direction of the element string. Each fastener element is integrally embedded in each part, and the fastener elements are wrought in series and, if necessary, the knitting yarns embedded in each of the upper and lower parts are connected to the knitting yarn that is incorporated in the direction intersecting with the chain knitting structure. A synthetic fastener element row, characterized in that it may comprise a knitting yarn embedded in this element along approximately the longitudinal direction of the element.

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