JPH0728922U - Adhesive tape for hemming - Google Patents

Abstract

(57) [Abstract] [Purpose] To prevent sticking at the time of adhesion, increase the surface area for heat fusion, and improve adhesion. [Structure] A knitting yarn a is knitted by one needle bar of a double Raschel machine to form a band-shaped base fabric together with an insertion yarn c, and a heat fusion yarn b is exposed on the surface of the base fabric by the other needle bar. Without knitting, a knitting loop structure is formed on the back surface side of the base cloth by the heat-bonding yarn b, and the knitting loop-shaped heat-bonding yarn b on the back surface of the base cloth is floated on the back surface side of the base cloth for hemming adhesion. It is a tape.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an adhesive tape for finishing hem such as pants and skirts.

[0002]

[Prior art]

 Conventionally, as this kind of hem-finishing adhesive tape, for example, a positioning portion is provided at the center of a band-shaped cloth having a predetermined width, and the positioning portion is left, and a thermoplastic resin adhesive is applied to both sides of the inner surface of the band-shaped cloth. Layer-formed tape (see Japanese Utility Model Publication No. 51-4302), band-shaped tape body with zigzag weaving or knitting threads for heat bonding on both sides of one side and troughs of the thread for heat bonding inside the tape body. A tape using a thermoplastic resin thread that melts at a lower temperature than the above-mentioned thread for heat-bonding as a thread for fixing the portion (see JP-B-57-43847), or a plurality of rows of heat-soluble thread on the edge of the band-shaped cloth. A tape (see Japanese Utility Model Publication No. 57-20627) in which the adjacent yarn rows are connected with a water-soluble chain knitting yarn is known.

[0003]

[Problems to be solved by the device]

 However, of these, the former two tapes each have an adhesive layer or a thermoplastic resin thread that exhibits adhesiveness when heated on both sides of the band-shaped cloth, and therefore the tape is heat-bonded by an iron or the like. At that time, heat causes shrinkage, which causes abnormal shrinkage and warpage in the longitudinal direction, which causes a problem of incomplete adhesion.

On the other hand, the latter tape, which is connected with a water-soluble chain knitting yarn, is warped because the chain-knitting yarn of the water-soluble yarn is melted during thermal bonding and each row of the heat-soluble yarn is separated. Although it has few advantages, however, since the heat-soluble yarn is weft-inserted and is held by the chain knitting yarn in the lengthwise direction, it is restrained, so that the amount of heat that is held by the chain knitting yarn is reduced. The adhesive strength of the soluble yarn is reduced and a large amount of heat-soluble yarn is required to obtain a sufficient adhesive effect. Since the heat-fusible yarn has the drawback of being hardened by the heat-bonding process, it is difficult to use it for hem hem of thin slacks fabric or soft slacks fabric.

In view of the above-mentioned circumstances, the present invention has found that the heat-fusible yarns are looped, prevent the pulling at the time of bonding, increase the heat-welded surface area, and improve the adhesiveness, and The purpose of this is to reduce the amount of fusible yarn and eliminate the rough surface after adhesion.

[0006]

[Means for Solving the Problems]

 In order to achieve the above object, in the present invention, a knitting yarn is knitted by one needle bar of a double Raschel machine to form a belt-like base fabric, and the other needle bar is used to heat-bond the yarn. A structure in which the knitted loop structure of the above-mentioned heat-bonding yarn is formed on the back surface side of the base cloth by knitting without exposing the cloth surface, and the knitted loop-shaped heat-bonding thread on the back surface of the base cloth is floated on the back surface side of the base cloth. And In the present invention, for convenience, the front surface and the back surface of the base cloth are, for convenience, the outer surface that comes into contact with the eyes when used, and the hidden inner surface is the back surface.

Here, the heat-fusible yarn is a yarn having a relatively low melting point that is melted by iron heating or the like and exhibits adhesiveness, and is usually a thermoplastic synthetic fiber yarn such as low-melting nylon.

Further, the ground knitting yarn is to connect the chain knitted yarn with a thermoplastic synthetic fiber yarn having a relatively higher melting point than the above-mentioned heat-fusible yarn forming a chain knitted fabric to form a base fabric. Includes both insertion threads that are folded back.

The knitted loop structure on the back surface side of the base cloth formed by the heat-bonding yarn is generally formed on both side edge portions of the back surface of the band-shaped base cloth over an appropriate width. Further, it is possible to further form one or a plurality of lines, and it is also possible to take various arrangements in consideration of the design effect, such as forming it in the middle part intermittently together with both side edge parts. Of course, it may be formed on the entire back surface.

[0010]

[Action]

 When the hem of trousers or the like is finished using the above-mentioned adhesive tape, first, the lower end of the trouser hem body is folded back inward, and the folded edge is brought into contact with the inner surface of the hem body. Overlap the adhesive tape so that it covers the folded part of the contact part and the hem body. Then, if the adhesive tape is properly aligned and processed and pressed from the surface of the adhesive tape body with an iron or a press, the heat-sealing yarn melts and the upper edge side becomes the hem body, while the lower edge side It penetrates into the folded piece, and the hem body, the adhesive tape and the folded piece are integrally bonded.

At this time, the heat-fusible yarn is knitted as a knitted loop, and since it is floated on the back surface of the base cloth, it exerts a good adhesive effect without causing any attraction at the time of bonding.

[0012]

【Example】

 Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

FIG. 1 is an external view showing an example of an adhesive tape according to the present invention, FIG. 2 is a view showing an example of a tissue structure of a side edge portion of an adhesive tape using a heat-sealing yarn, and FIG. 3 is the same structure. FIG. 3 is a partially enlarged view of a part of the knitting structure according to the configuration, in which the ridges are partially omitted.

As an example, the adhesive tape 1 of the present invention is constructed by forming adhesive portions 3 using a heat-fusible thread with appropriate width on both side edges of a strip-shaped base cloth 2 as shown in FIG. An adhesive tape for hemming in which adhesive portions 3 are formed on both side edges of the belt-shaped base fabric 2 is known, and is not unique.

The present invention is characterized by the knitting structure of the base cloth 2 and the adhesive portion 3 in the adhesive tape 1 as described above.

That is, the adhesive tape 1 of the present invention is knitted using a double Russell machine.

The base cloth 2 is knitted together with the insertion thread by one needle bar of the double russel machine using synthetic fiber thread having a relatively high melting point as compared with the heat-sealing thread, and the adhesive portion 3 is the above-mentioned base cloth. In contrast to 2, the nylon fiber yarn having a relatively low melting point is knitted by the other needle bar of the double Russell machine by using a heat-fusible yarn that melts by heating with an iron etc. during use and exhibits adhesiveness.

2 and 3 show an example of the basic structure of the adhesive tape of the present invention knitted by the double Russell machine, where L ₁ , L ₂ and L ₃ represent the yarn guiding process of individual knitting yarns. , 1 to 3 indicate the arrangement positions of the guide bars through which the knitting yarns pass, but here, for convenience, the stitch rows are shown. That is, L ₁ is _one needle bar of the double Russell machine, in the figure, a chain stitch row composed of a base knitting yarn a such as a polyester fiber yarn which is knitted by a back needle B and forms a belt-shaped base fabric 2, and L ₂ is A chain stitch row composed of a heat-bonding yarn b such as a low melting point nylon yarn knitted by the other needle bar of the double Russell machine, a front needle F in the figure, and a base stitch line L ₁ of the ground knitting yarn a. While the cloth 2 is formed, the chain stitch row L ₂ composed of the above-mentioned heat-sealing yarn b is knitted on the adhesive portion 3 by the other needle bar, and as shown in FIG. Since the heat-sealing yarn b crosses the stitches of the ground knitting yarn a on the inner surface of the row L ₁ , the chain stitch row L ₂ of the heat-sealing yarn is not exposed on the surface of the base fabric 2 and the stitches of the ground knitting yarn a are not exposed. It is connected to the column L ₁ . Therefore, the heat-bonding yarn b has a knitting loop shape and appears as a state of being floated on the back surface side of the base fabric 2.

In addition, c is an insertion yarn for connecting the chain stitch row L ₁ of the ground knitting thread a forming the base fabric 2 and forming a row L ₃ with respect to the chain stitch row L ₁ as a ground knitting thread. Is folded back and inserted in the weft direction, and the chain stitch row L ₁ is connected to each other to form the base fabric 2 together with the chain stitch row L ₁ .

The synthetic fiber yarns used for the ground knitting yarns a and c and the thermal fusion bonding yarn b may have the same thickness, but the thermal fusion bonding yarn is It is possible to use thin yarns, and normally, three heat-bonding yarns of about 75 to 100 denier and three knitting yarns of 75 to 100 denier are used.

FIGS. 4 and 5 show another embodiment of the knitting structure according to the adhesive tape of the present invention. In FIG. 4, two kinds of insertion yarns c and d which are inserted in opposite directions are used. Row L ₃ , L_FourTo form a chain stitch row L of the ground knitting yarn a₁They are connected by turning back and forth. Further, in FIG. 5, the chain stitch row L of the ground knitting yarn a in FIGS.₁To reinforce the chain stitch line L with the same ground knitting yarn a₃Is formed. L_Four, L_FiveIs a yarn string consisting of the inserted yarns c'and d '. Such reinforcement may be applied to the entire surface of the base cloth, but the stitch row L of the heat-sealing yarn b is₂Only the points may be provided. By doing so, it is possible to obtain the advantage that the stitches of the heat-sealing yarn b 1 can be easily piled. Alternatively, the chain stitch of the heat-sealing yarn can be obtained by reversely hooking the chain stitch of the heat-sealing yarn as a means for forming the chain stitch of the heat-sealing yarn.

In addition to the above embodiments, various modifications are of course allowed without departing from the object of the present invention. And, in all of these, the heat-bonding yarn b forming a knitting loop floating on the back side of the base cloth 2 is melted by heating during use, such as an iron, and exhibits adhesiveness. Unlike the heat-sealed yarn, the contraction does not spread to the base fabric, and therefore, no twitching occurs, and good hem finishing can be performed.

[0023]

[Effect of device]

 As described above, the present invention uses the needle bar of one of the double raschel machines to knit a belt-shaped base cloth and the other needle bar to knit a heat-bonding yarn that exhibits adhesiveness by heating when used. This adhesive tape for hemming has a loop-shaped heat-sealing thread floated on only one side.The heat-sealing thread is knitted into a loop only on the back side without being exposed on the surface of the base fabric, and is conventionally used during bonding. Unlike the linear insertion of the heat fusion yarn, even if there is shrinkage due to heating, there is almost no spillover to the base fabric and the hem body of the clothing, and not only does it not cause a twitch, but also the heat fusion. The yarn has a remarkable effect that a good adhesion effect can be obtained because the yarn floats on the backside of the base fabric.

Further, since the heat-fusible yarn is floated on the wale on the back surface of the base cloth, the adhesive tape according to the present invention can be preheated with hot air at 70 to 90 ° C. and knitted into a pile. Further, the chain stitch of the heat-sealing yarn can be contracted in advance to reduce the contraction during use and further enhance the adhesive effect.

Further, since the heat-sealing yarn is knitted together with the base cloth, the production efficiency is high, and when the heat-sealing yarn by the conventional separate insertion is inserted in the length direction, it is inserted in the width direction of 900 denier. In the case of 300 to 600 denier, only 100 denier is needed, which has the advantage of saving material and reducing the amount of mess.

[Brief description of drawings]

FIG. 1 is a partial external plan view showing an example of an adhesive tape according to the present invention.

FIG. 2 is an exploded view showing an example of a basic structure of the adhesive partial knitting of the tape.

FIG. 3 is a partial view showing a knitted fabric having the basic structure of FIG. 2 and only a part of the heat-sealing yarn is shown.

FIG. 4 is an exploded view showing another embodiment of the basic structure of the adhesive partial knitting of the adhesive tape of the present invention.

FIG. 5 is an exploded view showing still another basic structure example of the adhesive partial knitting of the adhesive tape of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Adhesive tape 2 Base cloth 3 Adhesive part a Ground knitting yarn b Thermal fusion bonding yarn c, d Insertion yarn L _{1 to} L ₅ stitch row

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Office reference number FI technical display location D06H 5/00

Claims (3)

[Scope of utility model registration request] 1. A knitting yarn is formed by knitting a ground knitting yarn by one needle bar of a double Raschel machine, and knitting is performed by the other needle bar without exposing the heat-sealing yarn to the surface of the base fabric. Then, a knitting loop structure is formed on the back surface side of the base cloth by the above-mentioned heat-sealing yarn, and the knitted loop-shaped heat-sealing thread on the back surface of the base cloth is floated on the back surface side of the base cloth. tape. 2. The hemming adhesive tape according to claim 1, wherein a knitting loop structure made of a heat fusion yarn is formed on both sides in the longitudinal direction of the back surface of the belt-shaped base fabric. 3. The adhesive tape for hemming according to claim 1, wherein the knitted loop structure formed by the heat-fusible yarn is formed on one side or a plurality of lines on both sides along the longitudinal direction of the back surface of the belt-like base fabric and in the middle thereof.