KR850000735B1 - Slide fastener - Google Patents

Abstract

This slide fastener is made of mono filament and has fastener-element rows. Also, bending intensity and transversedirection tensile intensity of the slide fastener are reinforced. Fastener elements consist of two arms which are piled upon one another, and are connected to each other by the tail-end connecting part. strands of filling thread (2) are compressed into each other under the arms (4,5).

Description

Slide fastener and manufacturing method thereof

1 is a plan view of a portion of a slide fastener according to the present invention.

FIG. 2 is seen from arrow A of FIG.

3 is a side view of an apparatus for use in the method according to the invention.

4 is a cross-sectional view taken along the line B-B of FIG.

FIG. 5 is a view similar to FIG. 2 showing a preformed fastener element.

6 is a plan view of a fastener element row disposed on a heat-fixing wheel.

7 is a sectional view along line 6-6 of FIG.

8 is a view similar to FIG. 5 showing a fastened fastener element.

* Explanation of symbols for main parts of the drawings

1: fastener element column 2: peeling yarn

3: fastener element 4, 5: arm

6: coupling head 7: coupling head receiving area

8: tail connector 9: heat opening

12: stringer tape 13: sewing thread

FIELD OF THE INVENTION The present invention relates to a slide fastener made of thermoplastic monofilament and having a fastener element row extending spirally stabilized by heat fixation with a filling yarn disposed, the fastener element being a single joining head. A long oval joining head receiving area and two arms protruding over the fastener face and superimposed on each other, the fastener elements being joined by a trailing joint to form a row and the filling filler in the row Partially disposed within the receiving area and coupled to such parts.

Fastener element rows are sewn into, embedded in, or otherwise connected to a woven stringer tape, and the tape is connected to the tape by means of a similar means, and then sliders and top and bottom stop members are installed in positions according to the desired length of the final fastener. do.

The invention also relates to a method for producing such a slide fastener.

Known slide fasteners of the above kind have generally been satisfactory, but their transverse tensile strength, i.e., so-called bending or torsional strength, has not been satisfactory, especially when the fastener is bent or twisted. The term "lateral tension" refers to the force acting on the fastener in the transverse direction to the length of the fastener, such as when the fastener is sealed to the garment. Although long attempts have been made to improve the above-mentioned strength by means including the use of special materials for fastener elements, the use of special structures of the joining head and joining head receiving zones, and similar steps, all of these means are at additional cost It costs.

Accordingly, it is an object of the present invention to develop a slide fastener of the kind described above without additional cost, in particular to provide transverse tensile strength such as bending or torsional strength.

It is another object of the present invention to provide a simple method for producing an improved fastener of the kind described above.

Therefore, in accordance with the present invention, the peeling yarn has a circular cross section with a diameter larger than the diameter of the monofilament in the region between adjacent filament elements, and the filling yarn in the region between the fastener element arms has an elliptical cross section half-filling the space of the coupling head receiving region. It is flattened by the arms.

The starting point of the present invention is that the transverse tensile strength of the above-described slide fasteners is not determined by the individual elements, but is determined by the interaction of a plurality of elements in the region where the transverse force acts on the fasteners. It is to ensure that the stress does not cause the mechanical stress that tends to open the fastener. The present invention satisfies such requirements for two reasons. That is, one reason is that only half of the coupling head receiving area remains empty and the coupling heads are engaged, but only contact the elliptic apex of the elliptical cross section of the peeling yarn. The second reason is that the arms of the fastener element are peeling yarns in the longitudinal direction of the fastener. It is to provide a facility to allow limited exercise for. However, the fastener element pitch, i.e. the spacing between the individual fastener elements, is satisfactorily determined since the peeling yarn has a circular cross section of the size described above between adjacent fastener elements and has a suitable return force useful to prevent undesired variations of such pitch. do.

The present invention provides various possible ways and means for further improvement. The peeling yarns are preferably pressed together by the arms without material connections. According to the invention, when the filling yarns are made of thermoplastic fibers, such as plastic monofilament waves of the Wasner element, the fibers of the filling yarns are pressed together under the arms without material connections. The term "material linkage" means any form of junction connection.

The invention also relates to a method for producing such a slide fastener. According to the method, a fastener element row extending into a spiral with a peeling yarn is first preformed, and then the value of the open static wheel is engaged with the spacing between adjacent fastener elements and the fixed wheel is engaged with the row, and the row is thermally fixed. Next, final shaping is performed by placing an ultrasonic sonotrode on the heat-setting wheel and its operation as an anvil of the ultrasonic device. The finally formed fastener element rows are finally bonded to the stringer tape.

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만큼 직경이 감소된다. 초음파 열고정은 이 상태에서 수행되고 그 열고정 단계에 의해 결합헤드 수용지역의 단면적이 대략

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만큼 감소되고 그리하여 필링사가 결합헤드 쪽으로 상기 지역내에서 타원형으로 넓혀질 수 있다. 파스너 엘레멘트열들은 결합되지 않은 채로 열고정되는 것이 바람직하다.According to the invention, the filling yarns arranged in the preformed rows and having a substantially circular cross section even in the large engagement head receiving area between the fastener element arms are pressed on the trailing connection by a whirl and thus approximately

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As the diameter is reduced. Ultrasonic heat setting is carried out in this state and the heat setting step results in approximately

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Can be reduced so that the peeling yarn can be elliptical widened in the area towards the joining head. The fastener element rows are preferably heat set unbonded.

The fastener is preferably sealed to the tape with a fabric string by a sewing thread passing through the filling yarn between adjacent fastener elements.

The present invention will be described in detail below with reference to the accompanying drawings.

The slide fasteners shown in FIGS. 1 and 2 have a fastener element row 1 extending in a spiral. The heat is stabilized by heat setting, made of thermoplastic monofilament, and a filling yarn 2 is disposed in the heat 1. The yarns 2 are made of thermoplastic fibers or cotton fibers and are formed by weaving or knitting or braiding or twisting. The fastener element 3 consists of two arms 4 and 5 protruding on the fastener face and superimposed on one another, a single joining head 6 and a long oval joining head receiving area 7. The elements are arranged in the row 1 such that they are connected to each other by a trailing connection 8 to form a row 1 and that the yarns 2 occupy only part of the area 7 and are joined to the connection 8. As can be seen from the comparison between FIG. 1 and FIG. 2, the yarns 2 in the region between adjacent elements 3 have a substantially circular cross section of diameter D larger than the diameter d of the plastic monofilament. Have However, between the arms 4, 5 the yarns 2 are pressed into elliptical cross sections by the arms 4, 5. The cross section occupies approximately half of the space of region 7, as can be seen in FIG. 8.

The yarns 2 are pressed against each other by the arms 4 and 5 but are not joined to the arms. If the yarns 2 are made of thermoplastic fibers, such fibers are only pressed in the region between the arms 4 and 5 and are not bonded to each other. Thus, the positioning or heat setting process proceeds in an obvious manner from FIGS. 3-8. First, a fastener element row 1 extending into the spiral in which the peeling yarn 2 is disposed is preformed from the plastic monofilament. The rows 1 are arranged in the heat-setting wheel 9, and the " tooth 10 " of the wheels is engaged in the gap between adjacent fastener elements 3. The row 1 is then heat-set and the wheel 9 ) And finally formed by an ultrasonic sonorod 11, which acts as an anvil of the ultrasonic device. Finally, the finished row 1 is, for example, sewn on the stringer tape 12 by means of a sewing thread 13. Are attached (this process is not shown).

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정도까지 그의 직경이 감소된다. 사실, 열고정은 사(2)가 전술한 방식으로 압착된 때 전술한 방식으로 진행된다. 열고정은 지역(7)의 크기가 대략

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만큼 감소되는 초음파 과정이다. 이것은 열고정에서의 모노필라멘트의 수축정도와 관련된다. 어떤 경우에, 사(2)가 제8도에 도시된 방식으로 결합헤드(6)쪽으로 지역 (7)내에서 타원형으로 확개될 수 있는 조건이 제공된다. 일반적으로 오직 하나의 열(1)만이 전술한 방식으로 예비성형되고, 결합되지 않은 상태로 열고정된다. 이것은 높은 횡방향 인장강도에 필수적인 조건을 제공한다.As can be seen in FIG. 5, the filling yarns 2 in the preformed rows 1 have a substantially circular cross section even between the arms 4, 5 in the large area 7. Next, the yarn 2 is pressed onto the trailing connection 8 by the wheel teeth 10, approximately as shown in FIGS. 6 and 7.

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To that extent its diameter is reduced. In fact, the heat setting proceeds in the manner described above when the yarn 2 is pressed in the manner described above. The heat setting is approximately the size of the area (7)

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It is an ultrasonic process that is reduced by as much. This is related to the degree of shrinkage of the monofilament at heat setting. In some cases, a condition is provided in which the yarn 2 can be elliptically extended in the region 7 towards the coupling head 6 in the manner shown in FIG. 8. In general only one row 1 is preformed in the manner described above and heat-set in an unjoined state. This provides the necessary conditions for high lateral tensile strength.

Claims (5)

It is made of thermoplastic monofilament and has fastener element rows extending spirally stabilized by heat setting with the filling yarns disposed, and the fastener elements protrude from the single joining head, the long oval joining head receiving area and the fastener face to each other. In a slide fastener composed of two overlapping arms, fastener elements joined together by a trailing connection to form a row, and the filling yarns in that row occupy the joining head receiving area partially so that they are joined to such a connection. , The peeling yarn 2 has a substantially circular cross section with a diameter D greater than the diameter d of the monofilament in the region between adjacent fastener elements 3, and in the region between the fastener element arms 4, 5 , The peeling yarn (2) to the arms (4, 5) in an elliptical cross section that fills half of the space of the coupling head receiving area (7) A slide fastener, characterized in that flattened by. The slide fastener according to claim 1, wherein the filling yarns (2) are pressed together by arms (4, 5) without bonding. 3. The slide fastener according to claim 1 or 2, wherein the filling yarns are made of thermoplastic fibers and the fibers of the filling yarns (2) are pressed together under the arms (4, 5) without bonding to each other. A spirally extending fastener element row is preformed with the filling yarn disposed, and then the heat-setting wheel is coupled in the fastener element row with its teeth coupled in the gap between adjacent fastener elements, and then the row is heat-set, In the pre-formed heat in the slide fastener manufacturing method in which the final molded heat is finally formed by placing the ultrasonic sonot rod on the heat-setting wheel and its action as an anvil of the ultrasonic device, and finally attached to the stringer tape. Filling yarns disposed and having a substantially circular cross section even in the large engagement head receiving area between the fastener element arms are compressed by a whirl against the trailing connection and thus approximately

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Diameter is reduced, ultrasonic heat setting is carried out in this state, and the heat setting step

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A method for producing a slide fastener, characterized in that the peeling yarn is reduced in size so as to be elliptically widened in the receiving area toward the back of the head. 5. The method of claim 4 wherein the fastener element rows are heat set unengaged.

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