JP2007138323A - Piping tape - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a piping tape which is sewn on an edge of a fabric of garment bowing with a large curvature such as neckline of an undershirt, free from anxiety of causing wrinkles on sewn part of the tape or causing the fabric slantingly standing. <P>SOLUTION: The piping tape is provided with a curvature matching to the cut shape of the fabric to be sewn. The piping tape elastic in longitudinal direction is woven or knitted with elastic fibers as warp, wherein the tape or the tape folded in two has curved shape with a predetermined curvature due to the stepwise or continuous step down or step up of substantial warp length from one end to the other end of the tape width direction or from central part to the both ends, in a natural state in which tension is not loaded to the warp constituting the tape. The tension of the warp in tape width direction, elongation strength, density or numbers of intermingling points per unit length of the warp gradually step downs or step ups. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a piping tape used for edging around cuffs and necks of clothes.

  In order to prevent fraying and improve the feel of the fabric, such as the cuffs and neckline of clothes, the tape is sewn and trimmed, and the tape used for this is called piping tape. I'm calling. A stretchable piping tape such as a narrow rubber fabric is used for a stretchable fabric such as an undershirt.

  FIG. 7 is a diagram schematically showing an example of the undershirt 10 trimmed with piping tape. The piping tape 1 is sewn on the neck portion 10a, the cuff portion 10b, and the waist portion 10c. There are two methods for attaching the tape to the edge of the fabric. One is a method in which the tape 1 is sewed on one side of the fabric 11 with the tape 1 being flat as shown in FIG. As shown in FIG. 10, the tape 1 is folded in half at the width center, and the edge of the fabric 11 is sandwiched between the folded tapes 1 and sewn.

In addition, there exists the following patent document about the method of manufacturing the non-stretch curved thin-width woven fabric used as an interlining of the waist of slacks.
JP-A-53-19489

  As described above, the piping tape 1 is sewn to the edge portions of the fabric such as the neck 10a, the cuffs 10b, and the waist 10c of the undershirt 10 as shown in FIG. 7, but like the neck 10a. It is necessary to sew the tape 1 in a curved state at a portion where the edge line is curved. Piping tape is straight and can be bent with a small curvature, but in places where the edge of the fabric is curved with a large curvature, such as around the neck 10a, a straight tape is sewn. Must be forced to curve.

  However, when the tape 1 is forcibly bent and sewed, the cloth on which the tape 1 is sewn as shown schematically in FIG. 11 edge portions 12 stand diagonally with the tape 1 (bend). At the sewing factory, after piping tape 1 is sewn, ironing is performed to prevent the part where the tape is sewn from standing, but the tape stands at a considerable angle in the product, so shirts etc. The product itself may be a defective product, which has been one of the troublesome problems plaguing garmenters for many years.

  The present invention has been made to solve the above-described problem. In a piping tape that is sewn to the edge of a cloth of clothing that is curved with a large curvature, such as a neckline of an undershirt, It is an object to provide a tape that does not cause wrinkles or the fabric may stand diagonally.

  This invention uses a stretchable thread such as polyurethane or latex as a warp, and provides a piping tape having a predetermined bend (curved) that matches the cut shape of the fabric to be sewn from the beginning. It solves the above problems.

  The piping tape according to the invention of claim 1 of this application is a tape used when the tape 1 is flatly applied to one surface of the fabric 11 and sewn as shown in FIG. In a piping tape that is elastic in the longitudinal direction woven or knitted using elastic yarn such as yarn, latex yarn, and these covering yarns, natural tension is not applied to the warp that constitutes the tape A tape having a predetermined curvature is imparted to the tape as a result of the substantial warp length in the tape width direction gradually decreasing or increasing gradually from one to the other in the tape width direction. It is characterized by.

  The piping tape according to the invention of claim 2 of the present application is a piping tape that is used when the tape 1 is folded in half as shown in FIG. Latex yarn and piping tape that is woven or knitted using elastic yarns such as covering yarn, etc. in the longitudinal direction, in a natural state where tension is not applied to the warp yarn constituting the tape. Due to a substantial diminishing or increasing of the warp length from the center line of the tape toward both sides in the width direction, a bending with a predetermined curvature is given when the tape is folded in half at the center line. It is a feature.

  Here, “substantial” means the apparent length on the tape. For example, even if the warp length is the same, the warp is woven or knitted on the tape due to the difference in the woven or knitted structure. The lengths to be made are different lengths. The substantial length of the warp here refers to the apparent length of each warp on the tape after weaving or knitting.

  The piping tape according to the invention of claim 1 is woven or manufactured in a state where the tension applied to the warp is reduced or increased continuously or stepwise from one to the other in the width direction of the tape during weaving or knitting of the tape. Method of knitting, as the warp, the elongation strength (the tension necessary to stretch one warp by the unit elongation) is continuously or stepwise from one to the other in the tape width direction, generally stepwise , A method of weaving or knitting a tape using a plurality of gradually decreasing or increasing warps, a warp density (the number of warps per tape unit width) continuously or stepwise from one to the other in the tape width direction The method of weaving or knitting the tape by decreasing or increasing, the tangling point of warp per unit length of tape from one side to the other side of the tape in the tape width direction (interwoven point with weft in woven fabric, concerned in knitted fabric) With warp or adjacent warp How number to adopt stepwise decreasing or increasing returns to tissue 絡点), and can be produced these methods in an appropriate combination methods.

  On the other hand, the piping tape according to the invention described in claim 2 is a state in which the tension applied to the warp is gradually or gradually decreased or increased from the center in the width direction of the tape to both sides at the time of weaving or knitting the tape. A method of weaving or knitting, as a warp, use a plurality of warps whose elongation strength decreases or increases continuously or stepwise, generally stepwise from the center in the width direction of the tape to both sides. Method of weaving or knitting, Method of weaving or knitting tape by decreasing or increasing the warp density from the center in the width direction to both sides continuously or stepwise, from the center in the width direction of tape to both sides And a method of employing a structure in which the number of warp entanglement points in the unit length of the tape is gradually reduced or increased, and a method in which these methods are appropriately combined.

  The curvature of the bending of the piping tape manufactured by the above method can be set according to the ratio at which the warp tension, elongation strength, warp density, and number of entanglement points in the above manufacturing method are changed in the tape width direction. In practice, test weaving or test knitting is performed with the tension or the number of entanglement points changed, the curvature of the tape obtained is measured, and the number of tensions or entanglement points and these as necessary. The position to be changed when stepping is changed step by step is determined. In addition, when the curvature of the tape to be manufactured (the curvature of the tape according to claim 2 when folded in half) is large, the tape may be manufactured by a method in which two or more changes in the tension or the number of entanglement points are combined. .

  According to the present invention, it is possible to provide a piping tape provided with a bend matching the bend of the edge of the fabric to which the tape is sewn. When the curvature of the edge of the fabric changes along the edge, a tape having an average curvature of the edge is used. This eliminates wrinkles on the tape when the piping tape is sewn on the edge of the fabric and the tape sewn portion of the fabric does not stand diagonally. can do.

  In addition, since the tape itself is curved with a curvature that matches the edge of the fabric to be sewn at the time of tape sewing, the piping tape can be easily sewn on the clothes.

  Next, an example of a piping tape of the present invention and a preferred method for producing the tape will be described with reference to the drawings.

  1 to 3 are views partially showing the shape of the piping tape according to the present invention in a natural state where no tension is applied. FIG. 1 shows that one or more of warp tension, elongation strength, warp density, or number of entanglement points are gradually decreased or increased from one side to the other in the tape width direction (decreasing when viewed from the side 2 side, and viewed from the side 3 side. It is the top view which showed the example of the tape which concerns on invention of Claim 1 which increased gradually. 2 and 3 are partial perspective views of the tape that is used by folding it in half, and FIG. 2 shows one or more of warp tension, elongation strength, warp density, and number of entanglement points from the center 4 in the width direction of the tape 1. FIG. 3 is a diagram showing an example of a tape that gradually decreases toward both sides 5. FIG. 3 shows one or more of warp tension, elongation strength, warp density, and number of entanglement points from the center 4 in the width direction of the tape 1 to both sides 5. It is the figure which showed the example gradually increased toward. All of these tapes are often used when the side where the warp tension is increased during weaving or knitting, the side using a warp with a high elongation strength, the side where the warp density is increased, or the side where the number of entanglement points is increased is natural. Shrink and bend inside.

  The piping tape 1 shown in FIG. 1 can be made by the following method. This can be achieved with a woven fabric using a needle loom or a knitted fabric using a raschel machine. Hereinafter, each method will be described with reference to the drawings. The following example is an example of a woven tape using polyurethane yarn covered as warp.

  The first method is a method in which the tape 1 is divided into, for example, three areas A, B, and C in the longitudinal direction as shown in FIG. 4, and the warp tension is changed stepwise. Without changing the warp density, the tension of the covering yarn in the A, B, and C regions is changed stepwise from the A region to the C region. For example, the load of one warp in the A region is 100 g, the B region is 80 g, the C region is 60 g, and the like. The number of divisions in the longitudinal direction may be greater than 3, and a greater number makes smoother the bending, but the setup during weaving becomes troublesome. This is a method of bending by using the fact that the larger the load applied to the warp, the easier it is to shrink, and the smaller the load, the less likely it is to shrink. The larger the load difference, the larger the curvature, and the smaller, the smaller the curvature. This relationship is the same regardless of how many the vertical direction is divided.

  The second method is a method of changing the elongation strength of the warp used for the regions A, B, and C divided into three in the machine direction shown in FIG. For example, assuming that it is divided into three, the total decidex of the polyurethane yarn in the A region is 1000 dTex, the total decidex of the polyurethane yarn in the B region is 800 dTex, and the total decidex of the polyurethane yarn in the C region is 600 dTex. This is a method of bending by utilizing the fact that the larger the total decidex of the polyurethane yarn is, the easier it is to shrink, and the smaller the total decidex is, the more difficult it is to shrink. The larger the total decadex difference, the larger the curvature, and the smaller, the smaller the curvature. This is the same regardless of the number of steps of the total decadex difference.

  The third method is a method of changing the warp density used for the regions A, B, and C divided into three in the longitudinal direction shown in FIG. For example, assuming that it is divided into three, the total decide of the warp density in the A region is 600 dTex, the total decide of the warp density in the B region is 800 dTex, and the total decide of the warp density in the C region is 1000 dTex. This is a method of bending by utilizing the fact that the higher the warp density is, the more difficult it is to shrink and the smaller the warp density is, the easier it is to shrink. The greater the warp density difference, the greater the curvature, and the smaller, the smaller the curvature. This is the same regardless of the number of steps of the total decadex difference.

  The fourth method is to change the weaving structure for each of the regions A, B, and C divided into three in the longitudinal direction shown in FIG. This is a method of changing the number of confounding points). For example, assuming that the warp weave structure of the A region is divided into three, the warp weave structure of the A region is shown in FIG. 5A, and the warp weave structure of the B region is shown in FIG. For example, the woven structure of the warp in the C region is shown in FIG. The more weaving points 8 between the wefts 6 and the warps 7, that is, the more the points 8 where the wefts 6 and the warps 7 are not only crossed but also the top and bottom are switched in the thickness direction of the tape, the less warp yarns 7 shrink. This is a method of making a turn using the fact that it is easy to shrink. The curvature increases as the difference between the weaving points between adjacent regions increases, and the curvature decreases as the difference decreases. This is the same no matter how many times the weaving points differ.

  The fifth method is a method in which the first to fourth methods are used in combination. For example, since the curvature around the neck of a shirt is quite large, when a tape having a sufficient curvature cannot be obtained even if the methods 1 to 4 are used alone, the first to fourth methods can be used in combination. It becomes possible to apply a stable and large curvature.

  The method of weaving the tape 1 which is folded in two and illustrated in FIGS. 2 and 3 and sewn to the fabric can be woven by a method according to the first to fifth methods. In the case of folding in half, the above first to fifth methods are applied by dividing the area almost symmetrically from the folding place toward the side edges of the tape on both sides. That is, for example, if it is divided into three sections, an area A is set at the center in the width direction with the crease 9 as the center, as shown in FIG. Set C. And as exemplified in the first method to the fifth method, the warp tension applied when weaving each of the regions A, B, and C, the total decitex of the weft, the warp density, and the density of the interweaving points of the warp are changed, or The piping tape of this invention shown in FIG. 2 or FIG. 3 is obtained by combining and changing these and weaving with a needle loom.

The top view which showed the example of the tape which concerns on invention of Claim 1 The perspective view which showed an example of the tape which concerns on invention of Claim 2 The perspective view which showed the other example of the tape which concerns on invention of Claim 2 Schematic diagram showing areas to be set on the tape illustrated in FIG. Schematic showing examples of warp and weft weave structures Schematic diagram showing the area set on the tape illustrated in FIGS. Schematic diagram showing an example of an undershirt trimmed with piping tape Sectional drawing which shows the state where an edge part stands diagonally with a tape Cross-sectional perspective view showing how to attach the tape to the edge of the fabric Cross-sectional perspective view showing another method of attaching the tape to the edge of the fabric

Explanation of symbols

1 Piping tape 8 Interlacing point (entanglement point)
9 Break
11 fabric
A, B, C Area to be set on the tape

Claims (2)

  In a piping tape having a longitudinal stretchability woven or knitted using a stretchable yarn as a warp, the warp length in the tape width direction in the natural state where no tension is applied to the warp Piping tape, characterized by being given a curvature of a predetermined curvature resulting from diminishing or increasing.   In a piping tape with a longitudinal stretch that is woven or knitted using a stretchable yarn as a warp, the warp yarn is stretched from the center line of the tape toward both sides in the natural state without tension. A piping tape having a predetermined curvature when the tape is folded in half at the center line due to a substantial decrease or increase in warp length.

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