ES2281466T3 - ZIPPER BELT CLOSURE. - Google Patents

Abstract

Zipper closure tape (1) provided with a main part of tape (5) obtained by weaving and a marginal part of assembly of elements (4), in which a core thread (7a, 7b) is incorporated by weaving, characterized in that a base warp (6e, 6f .... 6m, 6n) used for said main part of tape (5) has a lower thermal contraction coefficient than the other warps (6a to 6d), said core thread (7a, 7b) has a higher thermal contraction coefficient than all warps (6a to 6n), and a warp (6c, 6d) adjacent to said core thread (7a, 7b) on its inner side has a coefficient of thermal contraction higher than the base warp (6e, 6f .... 6m, 6n) used for said main part of tape (5) and lower than said core thread (7a, 7b).

Description

Zipper closure tape.

Background of the invention 1. Field of the invention

The present invention relates to a tape of Zip closure obtained by weaving. More particularly refers to a zipper closure tape on which it is not fear the so-called pucker that makes the tape stand out in a plane towards the side corresponding to the element or its opposite side so that the tape deforms with configuration of arc, even after the coupling elements have crossed several heat treatments and are fixed to the headband.

2. Description of the related technique

A zipper closure strap (hereinafter called support tape) is a tape exclusively for Zip closure featuring a plurality of elements intended to engage with complementary elements and fixed to along a lateral marginal part of the tape at distances regulate between them and carry a cursor and end stops upper / lower, and sewn to clothing or various kinds of bags once produced in a necessary length.

This kind of support tape is cut into a desired length after having gone through a series of stages of thermosetting, dyeing, drying, installation of the elements and similar after being woven. A cursor is mounted to pass between opposite elements and end stops are fixed upper / lower. When the tape is heated in the respective stages of thermosetting, dyeing, drying and the like, the thermal deformation, tensile forces, compression forces and similar in different directions apply to the tape support, thereby causing different deformations such as expansion and contraction of the tape in the warp direction and in the direction of the plot.

The support tape mentioned above it comprises a main part of tape and a marginal part of assembly of elements provided on a side edge of the tape. For increase the mounting force of tape elements as well as to stabilize the mounting configuration of each element, it fix a thicker soul thread than the other warps in the longitudinal direction of the tape at the same time as the headband.

Due to a structure difference between the main part of tape and the marginal part of mounting elements, usually the marginal part of mounting elements in which the soul thread is arranged has a coefficient of thermal shrinkage lower than that of the main part of headband. As a result, on the support tape that has gone through Various heat treatment processes, the main part of tape it contracts greatly, so it is likely to occur the so-called inverse gathering in which the marginal mounting part of elements protrudes outward to take the form of a arc.

On the other hand, while the elements, a great tension is applied to the support tape, particularly to the marginal part of mounting elements of the support tape to ensure a certain assembly step between elements, so that the elements are mounted in a state in the which the marginal part of mounting elements is stretched. By consequently, even after the tension is relieved, the part in which elements are mounted does not contract again original form and maintains the expanded state. As a result, the marginal part of mounting support belt elements stands out even more, so that it is even more likely to be produce reverse puckering. This trend is notable in the case of a zip closure that has flexibility and capacity Stretching

To solve this problem, for example, the Japanese patent application publication open to the public n ° 59-51807 proposes a support tape composed of a dual double-sided knitted ligament, in which a textured thread as the constituent thread of a part main ribbon tape, a soul thread covered with threads Continuous coverage of the main part of tape is arranged in a marginal mounting part of coupling elements of the tape, and in which the coefficient of thermal contraction of the thread of soul remains higher than the thermal contraction of the thread textured.

With this structure, due to a difference of the thermal contraction coefficients between the marginal part of assembly of elements and the main part of tape, the part marginal assembly of elements adopts a form of pucker called normal in which the marginal mounting part of elements are curved to assume a concave inward shape, when the heat treatment is done. However, due to stretching the main part of tape, you could get a excellent linearity zipper closure band even After assembling the elements. As a result, this tape support can be attached to very flexible garments and stretchable in a well adjusted state.

Since the support tape described above It is built with a double knitted ligament, the main part  of tape presents stretchability. In this way, even when produce a normal pucker, linearity can be obtained performing a contraction even when the closing band is completed zipper with the mounting of the elements in it.

However, if threads are lacking stretchability of those used for the current material of support tape on a support tape constructed with a current weaving structure, the main part of tape lacks of stretchability due to weaving structure. Thus, when the gathering on the support tape occurs, the band of Zip closure cannot correct your pursed state to the state linear. Therefore, when the support tape is sewn to garments and the like, the sewing process is complicated. In addition, a Once sewn, the zip fastener attached to the garment or similar does not flattens in its longitudinal direction, which results in that many inferior products assume a wavy state.

US 4,383,558 A discloses a zipper closure tape that features a main part of flat tissue tape and a marginal part of mounting elements in which a soul thread is incorporated by weaving, characterized because the support tape has a base warp used to the main part of tape that has a coefficient of lower thermal contraction than other warps.

Summary of the invention

The present invention has been achieved for solve the problems described above and therefore a objective of the present invention is to provide a tape of support to obtain a zipper closure band capable of ensure linearity without generating the pucker especially in its marginal part of mounting elements even after assembly of the elements in it.

To achieve the aforementioned objective, in accordance with The present invention provides a tape for closing zipper as specified in the attached claim 1.

In accordance with the present invention, the tape support, immediately after knitting, is in a state reverse inverse in which the marginal mounting part of elements protrudes slightly outward so that it is curved If dry heat setting is performed on the tape support with this configuration in a short time, the contraction of the marginal part of mounting elements and the contraction of the warps arranged in the main part of tape are not so different, but only the contraction of the marginal part of Assembly of elements is slightly larger. As a result, it eliminates the reverse pucker that is likely to occur immediately after weaving a support tape, so that  The support tape can be substantially linear.

The contraction of the support tape due to dyeing after the aforementioned process decreases by one order of the soul thread, the warps adjacent to the soul thread and The main part of tape. Then at the same time as the normal gathering state in which the marginal mounting part of coupling elements is pulled in in the form of arc, a forced ripple occurs in which the part main tape is wavy. The elements of coupling to the support tape once this stage of had. At the time of proceeding to this assembly of the elements, great tension is applied to the marginal mounting part of coupling elements. While the marginal part of assembly of elements due to tension when assembling the elements, the stretching is less than the contraction due to warming, so that the marginal part of assembly of substantially linear elements. On the other hand, I don't know Stretch the main part of tape when the elements are mounted. As a result, the state of forced ripple is maintained.

A cursor and terminal stops are mounted upper and lower than a zipper closure chain in the which zipper closure band elements obtained by mount the coupling elements on the support straps engage each other. Then, the closing chain of the zipper according to a necessary length, so that you can produce a zip closure. As indicated above,  the thermal contraction coefficient of the soul wire is made on the marginal part of mounting elements of the support tape is greater than the thermal contraction of the warps adjacent to the soul thread on its inner side, so that the difference of thermal contraction between the marginal part of mounting elements and the main part of tape becomes gradual. This way, I don't know produces a wavy contraction behavior in an area border between the marginal element assembly part and the part main tape. When this zipper closure is sewn to a object product, the marginal mounting part of Zipper closure band elements. Therefore, the sewing operation can be performed accurately and after sewing, you can get a good looking product because the zipper closure is not wavy in its direction longitudinal.

In addition, according to the tape for closing zipper of the present invention, it is preferable that the warp adjacent to the soul thread on its inner side is composed of two parallel threads. Since two warps are arranged together, You can easily increase the total thickness of the thread. Also when undergoes heat treatment, each thread can move with independence more easily, so that the contraction can Achieved safely. As a result, the marginal part of assembly of elements can be contracted regardless of the part main tape.

In addition, according to the tape for closing zipper of the present invention, it is preferable that the warp base on the main part of tape is thicker than the thread that composes the warp adjacent to the soul thread on its side inside.

Even more, according to the closure tape zipper of the present invention, it is preferable that a weft It is composed of two parallel wires, and its total thickness is less than the total thickness of the two parallel wires of the Warp adjacent to the soul thread on its inner side.

While the plot is curled greatly in the intersection between the soul thread and the adjacent warp, the soul thread and the adjacent warp are just curly but they remain substantially linear. As a result, you can get a free movement in the direction of the warp. For the therefore, it is possible for the support tape to contract and be fixed quickly through different kinds of heat treatments, while stretching just when the elements are molded by injection.

Moreover, according to the tape for closing zipper of the present invention, it is preferable that each of the basic warps used for the main part of tape, the warp adjacent to said soul thread on its inner side and the weft is composed of a textured thread. When a textured thread for each of the base warp, the warp adjacent to said soul thread on its inner side and the weft, the tape becomes thick so that the shape of the tape and flexibility can be achieved.

Brief description of the drawings

Figure 1 is a partial perspective view and enlarged schematically showing an embodiment typical of a weaving structure of a support tape of the present invention

Figure 2 is a sectional view through the plane II-II of Figure 1; Y

Figure 3 is an explanatory diagram that schematically shows the changes in the shape of the tape support in respective processing stages.

Description of the embodiments

Some forms of embodiment of the present invention in detail and with reference  to the attached drawings.

Figure 1 shows a weaving structure of a support tape of a typical embodiment that It presents a basic structure of the present invention. While, the landscape structure shown in this Figure 1 is represented by enough way for ease of understanding and it's really a Dense structure as seen in Figure 2.

Usually the woven support tape 1 of this class is woven into a narrow loom, which is called a loom of needles Therefore, a single thread moves in a reciprocating direction. opening so that two wires are inserted in parallel as a weft only 2. While in this drawing, the two wires inserted 2a, 2b that constitute frame 2 are separated from each other vertically, in actually they are in close contact with each other in the direction vertical. Next, a loop end, which is formed in one lap end of frame 2, is intertwined with one end in loop of a frame 2 to be formed next with a bolt needle, so that a marginal part 3 is formed in a lateral marginal part of the support tape 1. As shown in Figure 2, the coupling elements are fixed to the other lateral marginal part opposite to marginal part 3 formed by interlocking the loop ends of the frames 2.

Specifically, support tape 1 is constituted by a marginal part of assembly of elements 4 located  in a marginal part opposite to the marginal part 3 formed by interlocking the loop ends of frames 2 and over the which the coupling elements are mounted, and a part main tape 5 that extends from the marginal part of assembly of coupling elements 4 to the marginal part 3. For the threads 2a, 2b that make up the weft 2 of this form of embodiment, a fine textured thread made in 330 Tex polyester

For two warps 6a, 6b arranged on the side further out of the marginal part of mounting elements 4 in the illustrated embodiment, a multifilament is used with a nylon base, which is thinner than the other 6c warps, 6d, 6e ... 6m, 6n. Two soul threads 7a, 7b are arranged next to those two warps 6a, 6b on its inner side. In addition, two pairs of warps 6c, 6d, each of which consists of two parallel threads, are arranged next to the soul threads 7a, 7b on the inner side In this way, the marginal part of assembly of elements 4. In addition, the main part of tape 5 which is extends from the inner side of the warps 6c, 6d to the part marginal 3 includes a plurality of base warps 6e, 6f ... 6m, 6n.

In the present invention, to prevent it from produce puckering when manufacturing the zipper closure band, it is important to ensure a high contraction in the threads of soul 7a, 7b and is maintained at a low level of stretching of the tape on the side corresponding to the marginal part of assembly of coupling elements 4 once the support tape 1 has gone through the dyeing stage to protect the section from soul threads against stretching when the elements are molded injection coupling (not shown). In this way, it cover the core threads 7a, 7b respectively with knitted tubes 7a '', 7b '', which are obtained by the intersection of entremallas, each composed of a plurality of threads of knitting to surround core materials 7a ', 7b', thereof so that the soul thread structure disclosed in the Japanese Patent Application Publication No. 55-21605. According to this embodiment, employs a multifilament with denatured polyester base of 670 Tex for core materials 7a ', 7b' and its contraction coefficient in boiling water as high as fifteen%.

In addition, to prevent the puckering from occurring When the zipper closure band is manufactured, it is important that the warps 6c, 6d arranged adjacent to the soul threads 7a, 7b on the inner side do not stretch because of the pressure of the liquid upon injection molding of the elements of coupling and in the dyeing stage, just like the threads of soul 7a, 7b. For this reason, unstretched raw threads are used made of polyester based multifilaments composed of two parallel wires, so that the total thickness of the two 6c, 6d parallel wires is 2 x 560 = 1120 Tex, which is larger than the diameter of the other base warps 6e, 6f ... 6m, 6n and the thermal contraction coefficient is set to boiling water as high as 10%.

On the other hand, as the aforementioned basic warps 6e, 6f .... 6m, 6n that constitute the part main tape 5, a thick textured thread is used in multifilament with polyester base of 660 Tex and its coefficient Thermal shrinkage in boiling water is set at 7%. To the use a thick textured thread of this kind, you can provide the support tape with flexibility and at the same time a appropriate thickness In addition, the reason for setting the coefficient of thermal contraction higher than in a closing band of running rack provided with this kind of weaving structure is to minimize the possibility of a state occurring corrugated (referred to herein as "forced ripple") of the main part of tape 5 even after the band is manufactured Zip closure.

In addition, according to this form of embodiment, the weaving structure of the support tape 1 It has a characteristic.

The weaving structure shown in Figure 1 indicates a typical embodiment of the present invention, but the present invention should not be limited to this ligament and Different modifications are possible. The same may apply to the frames described above 2, warps 6a, 6b, 6c .... 6m, 6n and soul threads 7a, 7b. The size, the material, the coefficient of thermal contraction, the ligament and the like can be modified from different ways within the scope of the technical idea of the present invention

Next, the structure of landscape shown in Figure 1 in brief words. Both warps 6a, 6b arranged in the lateral marginal part more at exterior opposite the marginal part 3 make up a marginal part 7 which supports backward turns of frames 2, so that the two wires 2a, 2b that make up frame 2 are turned back to intertwine with each of the two warps 6a, 6b in turn.

The two soul threads 7a, 7b arranged in the marginal part of mounting elements 4 are arranged and woven on front and back sides of the tape so that they match the faces of the tape as seen in Figure 2. The faces of Soul wire contact are supported by two pairs of the wefts 2 (each pair includes two threads) while its front faces and opposite rear are supported respectively by another pair of frames 2 between the aforementioned two pairs of frames 2 alternately As a result, these soul threads are allowed 7a, 7b move freely in the direction of the warp. Both respective pairs of frames 2, 2 alternately pass over of the two respective pairs of warps 6c, 6d on their sides front and rear, which are adjacent to the soul threads 7a, 7b on its inner side, to oppose each other. How result, the movement of the warps 6c, 6d in the warp direction more firmly than the soul threads 7a, 7b.

Moreover, the weaving structure of the main part of tape 5 is a flat weaving structure current in which the weft 2 composed of two parallel wires is Consider a unique pair. In this weaving structure, the Thermal contraction coefficient is the lowest and its total thickness is 2 x 330 = 660 Tex, which is less than the thickness of each of the soul threads 7a, 7b or the total thickness of the two warps 6c, 6d parallel adjacent to the soul threads. In this way, the curl of the plot 2 at its intersection with the threads of soul 7a, 7b or with adjacent warps 6c, 6d and in the main part of tape 5 is strong while the soul threads 7a, 7b and the warps Adjacent 6c, 6d hardly curl, but are substantially linear Therefore a movement in the warp direction of the support tape as contraction and stretching in the Time of heat treatment, dyeing or installation of coupling elements is less affected by frame 2, of so that the support tape contracts quickly and is fixed by various kinds of heat treatment, while preventing the Tape is stretched at the time of injecting the elements.

By employing the weaving structure described above and warps of different kinds in this embodiment, the configuration of the support tape 1 changes as seen in Figures 3A to 3E each time you undergo each predetermined heat treatment process. In this way, when assembling the elements by injection, it is possible to obtain a linear configuration of the zipper closure band 8 without any puckering, especially on the side corresponding to the marginal assembly part of elements 4, so that the mounting this support tape on a product object by
sewing.

Specifically, as shown in Figure 3, firstly the support tape 1 immediately after woven is in a puckered state in which its marginal part of mounting elements protrudes outwards as seen in the Figure 3A Although at the time of finishing the weaving, it is generated little forced ripple in the marginal mounting part of elements 4, the main part of tape 5 suffers a slight forced ripple.

If this woven tape is thermofixed, for example, at 180 ° C for 1 minute, the soul threads 7a, 7b and the warps 6c, 6d each composed of two parallel threads of so that the marginal part of mounting elements 4 becomes substantially linear. Since the length of time of This setting process is short, the soul threads 7a, 7b and The warps 6c, 6d are not yet fully contracted. Whether Suppose the woven tape is 100 cm, the contraction of the part marginal assembly of elements 4 in this thermosetting is substantially 4.38 cm and the contraction of the main part of tape 5 at its extreme part is substantially 4.21 cm. By therefore, the forced undulation of the main part of tape 5.

Then when the tape is soaked support 1 in a high pressure dye solution at 130 ° C for dye for 40 minutes, although all of them are fully contracted warps 6a, 6b, 6c .... 6m, 6n as well as the soul threads 7a, 7b, the soul threads 7a, 7b and the warps 6c, 6d each composed two parallel wires contract more, so that a normal gathering state in which the side corresponding to the marginal part of mounting elements 4 is pulled inwards in Arc shape upside down from the reverse frown state. The same time a forced ripple occurs on the side of the part main tape 5 corresponding to the marginal part 3. From according to this embodiment, the part was contracted marginal assembly of elements 4 additionally at 0.94 cm in the dyed, while additional contraction of the main part of Tape 5 was 0.36 cm. However, there was no ripple forced into the marginal part of mounting elements 4, but the forced undulation of the main part of tape 5 increased.

After dyeing, the E coupling elements by injection and integrated into the part marginal mounting of coupling elements 4 of the belt support 1. When this injection molding occurs, a predetermined tension to the marginal part of mounting elements coupling 4 so that it is slightly stretched. One time molded elements E, as shown in Figure 3D, the main part of tape 5 is not affected by molding so The forced undulation remains. However, since the part marginal mounting of coupling elements 4 becomes linear, forced ripple in the main part is relatively reduced of tape 5. When this support tape is sewn to a product object 9, a straight seam line ML can be obtained as seen in Figure 3E and an appearance product can be obtained neat, in which the zip closure never ripples in its longitudinal direction

A typical embodiment of the present invention has been described so far, but the constituent materials, for example, of the core yarn that makes up the marginal mounting portion of coupling elements, of the warp adjacent to the core yarn on its side inside and the warp that composes the main part of tape and the weaving structure of these threads are not limited to the embodiments described above. It will be readily understood that the present invention can be modified in different ways within the technical scope of the present invention.
invention.

Claims (5)

1. Zipper closure tape (1) provided with a main part of tape (5) obtained by weaving and a marginal part of assembly of elements (4), in which a core thread (7a, 7b) is incorporated by weaving ), characterized in that a base warp (6e, 6f .... 6m, 6n) used for said main part of tape (5) has a lower thermal contraction coefficient than the other warps (6a to 6d), said soul thread (7a, 7b) has a higher thermal contraction coefficient than all warps (6a to 6n), and a warp (6c, 6d) adjacent to said thread of soul (7a, 7b) on its inner side has a coefficient of higher thermal contraction than the base warp (6e, 6f .... 6m, 6n) used for said main part of tape (5) and lower that said soul thread (7a, 7b). 2. Zipper closure tape according to claim 1, characterized in that the warp (6c, 6d) adjacent to said core thread (7a, 7b) on its inner side is composed of two parallel threads. 3. Zipper closure tape according to claim 1 or 2, characterized in that the base warp (6e, 6f .... 6m, 6n) in said main part of tape (5) is thicker than the thread that makes up the warp (6c, 6d) adjacent to said core thread (7a, 7b) on its inner side. 4. Zipper closure tape according to claim 1 or 2, characterized in that a weft (2) is composed of two parallel threads, and its total thickness is less than the total thickness of the two parallel warp threads (6c, 6d ) adjacent to said core thread (7a, 7b) on its inner side. 5. Zipper closure tape according to claim 1, characterized in that each of the base warps (6e, 6f .... 6m, 6n) used for said main part of tape (5), the warp (6c, 6d ) adjacent to said core thread (7a, 7b) on its inner side and a weft (2) are composed of a textured thread.