JP3860668B2 - Edge stitching tape and method for manufacturing edge stitching tape - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an edge stitching tape or label in which fiber melted portions on both side edges are wrapped with a sewing thread, and further to an edge stitching method for accurately and densely covering fiber melted portions on both side edges of a tape material.
[0002]
[Prior art]
A polyester woven label sewn on a commercially available textile product is woven into a strip with a narrow loom and further cut into pieces. The weaving method using a narrow loom has a defect that the production efficiency is low and the cost is high, so a high-speed loom such as a rapier loom is used to weave a wide fabric with synthetic fibers and heat cut this wide fabric into a strip shape Has become the current mainstream.
[0003]
[Problems to be solved by the invention]
When the wide woven fabric is heat-cut into a band shape, the weft yarn of the wide woven fabric is melted and cut, and linear fiber melted portions are formed on both side edges of the obtained woven tape. When the fiber melted part is a polyester fiber, it exhibits a hard glass-like shape, and the feeling of touch and appearance are very uncomfortable with the entire structure. When the label cut from the woven tape is folded to sew on a garment, the fiber melted portions on both side edges are broken to form a melted protrusion. When the label having the molten protrusion is sewn on the clothes, the molten protrusion will come into contact with the user's skin if it is an underwear, which may cause discomfort and wear the skin. In the case of outerwear such as ski wear, the sweater or inner shirt worn underneath may become frayed or fuzzy.
[0004]
With regard to woven labels obtained by heat-cutting wide woven fabrics, many users such as apparel manufacturers are strongly demanding prevention of fiber melted portions. As a measure for preventing the occurrence of a fiber melted part, a method of cutting a wide woven fabric with ultrasonic waves has already been proposed, but even if the melted part of the fiber can be reduced by ultrasonic cutting, the cutting part is likely to fray. The problem remains. On the other hand, if both sides of the woven label are sewn with an overlock sewing machine and the fiber melted part is wrapped with sewing thread, the protrusion due to the fiber melted part on both sides of the edge is reduced, and the sense of incongruity with the overall structure regarding touch and appearance can be considerably eliminated, In overlock sewing, due to the presence of the wooly thread used and the sewing thread intertwined with the wooly thread, the width of the stitches on both side edges becomes thicker, and the portion is raised, which is inconvenient when sewing woven labels and is also aesthetically pleasing. It is not preferable.
[0005]
An object of the present invention is to provide a woven tape that is excellent in aesthetics and has good tactile sensation, with the edge stitches on both side edges being inconspicuous.
[0006]
Another object of the present invention is to provide a woven label that is aesthetically pleasing and has a good tactile sensation, with the edge stitches on both side edges being inconspicuous.
[0007]
Another object of the present invention is to provide a woven label which does not generate protruding pieces even when bent during sewing and does not cause discomfort to the wearer.
[0008]
Still another object of the present invention is to provide an edge stitching method in which a woven tape is edge-sewn automatically and quickly and the fiber melted portions of both edges are tightly wrapped with a sewing thread.
[0009]
Still another object of the present invention is to provide an edge stitching method that does not cause woven tape to be pulled at the time of edge stitching, and does not cause sewing unevenness, thread breakage or fluffing of a single ring stitch that wraps a fiber melted portion. It is.
[0010]
These and other objects, features and advantages of the present invention will become more apparent to those skilled in the art from the following description.
[0011]
[Means for Solving the Problems]
In order to achieve the above object, the woven tape according to the present invention is a woven tape obtained by heat-cutting a wide woven fabric, and the fiber melted portion formed on both side edges by this heat-cut and the vicinity of the tape side edges. Along with the single ring stitch, the sewing thread of the thread ring portion extends laterally while passing over the side edge of the tape. In this woven tape, one sewing thread forming a single ring stitch is in close contact with the tape side edge while crossing the tape side edge, so that the fiber melted portion of each side edge is covered with the sewing thread.
[0012]
In this woven tape, it is preferable that the inclination of the single-ring stitching thread on both side edges is substantially centerline symmetric when viewed from the tape plane. When this woven tape is cut in the transverse direction, a woven label can be obtained. If desired, this woven label partially weaves the shrinkable yarn as a weft thread in the part that becomes the folding part at the time of sewing, and slightly dents both side edges of the part that becomes the folding part by the shrinking process after weaving .
[0013]
In the edge stitching method of the present invention, in a sewing machine comprising a horizontally-operated sewing needle and a forward / backward swing looper, a tape material having fiber melted portions on both side edges is sent upright in the longitudinal direction. A single ring stitch is formed which continues in the lateral direction while feeding the sewing thread back and forth along the vicinity of the thread. Further, in this edge stitching method, the tape material is reversed in the longitudinal direction, and the sewing thread is moved back and forth along the vicinity of the other side edge of the tape in the reverse feed sewing machine having a horizontal operation sewing needle and a forward and backward swing looper. A single ring stitch that continues in the lateral direction is formed while being fed to the sewing machine.
[0014]
In this edge stitching method, when the sewing needle passes under the tip of the presser foot and the looper with the thread ring hooked is lowered to the front position of the needle tip, the thread on the thread ring part is It is preferable to directly contact the top surface of the presser foot without directly contacting the edge. As a result, the sewing thread in the thread ring portion does not come into direct contact with the side edge of the tape during tightening when a strong tensile force is generated, and always forms a single ring stitch that is constant regardless of the hardness and thickness of the tape.
[0015]
Preferably, the tape material to be fed is positioned by a first guide plate that receives the upper edge portion and a second guide plate that contacts the lower edge portion. The first and second guide plates can be repositioned in the vertical direction, and the vertical distance between the inner peripheral surface of the U-shaped portion of the first guide plate and the upper surface of the horizontal portion of the second guide plate is the width of the tape material. It corresponds to.
[0016]
If desired, when weaving a wide woven fabric, a shrinkable yarn is partially woven as a weft in a portion that becomes a bent portion at the time of sewing. This wide woven fabric is heat-cut into a band shape, and then a single-ring stitch is formed along the vicinity of the side edge of the tape, and the resulting tape is partially contracted by shrinking the shrinkable yarn by a predetermined shrinkage treatment and bent at the time of sewing. Slightly indent both side edges of the part to be the place.
[0017]
DETAILED DESCRIPTION OF THE INVENTION
The woven tape of the present invention is provided with a single ring stitch that continues in the lateral direction while feeding a sewing thread to the front and back of the tape along the vicinity of both side edges where a fiber melted portion formed by heat cutting of a wide woven fabric exists. One sewing thread forming the stitches crosses the tape side edges and is in close contact with each other to cover the fiber melted portion of each side edge. The sewing thread at the both side edges can prevent twisting of the tape and the label if the inclination of the single ring stitch is substantially centerline symmetric when viewed from the tape plane. The edge-sewn tape may be used as a woven ribbon in the form of a band, or may be cut in the lateral direction and used as a woven label. As the sewing thread, it is preferable to use the same thin thread as the weft thread of the tape material because the color tone of the entire tape can be unified. The tape can be flattened by post-processing hot pressing, and the entire tape can be made approximately the same thickness.
[0018]
In the case of a woven label, it may have a shrinkable yarn that is partially woven as a weft thread at the part that becomes the folding part at the time of sewing, and in this case, both sides of the part that becomes the folding part by the shrinking treatment after weaving Make the edge slightly concave. This shrinkable yarn may be woven in the folded portion as a weft, or may be woven in 3 to 5 pieces only at each folding portion. The shrinkable yarn may be a heat shrinkable yarn that shrinks by heating, or may be a water shrinkable yarn or a chemically reactive shrinkable yarn that shrinks when sprayed or impregnated with water or chemicals.
[0019]
In the edge stitching method of the present invention, a tape material having a fiber melted portion is sent upright in the longitudinal direction, and a single ring stitch is formed which continues in the lateral direction while feeding a sewing thread back and forth along the vicinity of one tape side edge. To do. In this method, after one side edge of the tape material is single-ring stitched, the tape material may be reversed in the longitudinal direction, and a single ring stitch may be formed along the vicinity of the other tape side edge.
[0020]
Preferably, when single ring sewing is performed on the side edge of the tape with the sewing needle, the sewing needle passes under the tip of the presser foot, and the sewing thread of the thread ring portion does not come into direct contact with the side edge of the tape. It is in direct contact with the top surface of the tip. As a result, the sewing thread in the thread ring portion does not come into direct contact with the side edge of the tape at the time of tightening when a strong tensile force is generated, and can always form a single ring stitch that is constant regardless of the hardness and softness of the tape. The tape material to be fed is positioned by a first guide plate that receives the upper edge portion thereof and a second guide plate that is in contact with the lower edge portion, and the first and second guide plates can be changed in the vertical direction.
[0021]
【Example】
EXAMPLES Next, the present invention will be described based on examples. However, the present invention is not limited to the examples, and it is understood that those skilled in the art can make modifications without departing from the spirit and scope of the present invention. It should be.
[0022]
The tape material 2 of FIG. 1 or FIG. 2 is manufactured by heat-cutting a wide woven fabric 3 (FIG. 15) in a strip shape as is well known, and fiber melting portions (not shown) by heat cut are formed on both side edges 5 and 5 thereof. Is formed. The wide woven fabric 3 is woven with, for example, polyester fiber yarn, nylon fiber yarn, cotton yarn or the like, and synthetic fiber yarn is woven into at least a heat cut portion of the wide woven fabric. In the present invention, the tape material 2 is provided with a single ring stitch 8 that continues in the lateral direction while feeding the sewing thread 7 (FIG. 1) back and forth along the vicinity of the side edge 5, and the sewing thread is like a weft thread of the tape material. Either thin or thick thread such as woolly thread can be used. In general, the sewing thread 7 is a twisted thread, but a non-twisted thread can also be used. In the case of a woven ribbon, the design may be changed by changing the count or color of the sewing thread 7.
[0023]
As shown in FIG. 7, the one-side sewing apparatus 10 used in the present invention places all members on a single rectangular table 12, and the table is movable by a caster (not shown) installed below. A known edge stitch machine 14 is installed at the front center of the table 12. The first and second guide members 16 and 18 are screwed vertically to both front sides of the sewing machine 14, and both guide members are arranged in a straight line parallel to the front surface of the sewing machine. A tape mount 20 having a centering rod and a circular seat is vertically attached behind the first guide member 16, and a horizontal guide member 22 is located behind the second guide member 18. Further, the pair of upper and lower rollers 24 are rotatably installed behind the horizontal guide member 22 on the right side of the table.
[0024]
The edge sewing machine 14 is driven by a microcomputer-controlled torque motor (not shown) attached to the back side of the table 12, and a roller 24 having a pulley 30 fixed thereto via a pulley 26 and a belt 28 fixed to the rotating shaft of the sewing machine. The rotation shaft 32 is rotated synchronously. At the front center of the sewing machine 14, a rotatable circular flat protruding table 34 is horizontally mounted, and a horizontal presser disk 36 having a notch on the peripheral surface is set close to the peripheral surface of the protruding table 34 (see FIG. 9). ). The presser disc 36 is rotatably supported by an arm 38 projecting diagonally forward and downward from the upper front of the sewing machine. As shown in FIG. 10, the presser foot 37 having a curved plane is installed close to the upper side of the protruding base 34, extends from the left side of the protruding base to the front protruding surface, and contacts the side edge of the tape material 2 (FIG. 11). See), the protruding base 34 and the presser disc 36 rotate intermittently in the direction of the arrow. The upper surface of the presser foot 37 is positioned about 0.2 mm above the side edge of the tape material 2 as shown in FIG.
[0025]
In the sewing machine 14, the sewing needle 40 is mounted horizontally close to the upper surface of the protruding base 34 as shown in FIG. 9, and reciprocates horizontally up to the presser disk 36 as shown by a line 40 a in FIG. 10. At this time, as shown by a position 40b in FIG. On the other hand, as shown in FIG. 8, the looper 42 is a claw member that projects laterally from the lower end of the vertical bar 44, and the vertical bar is fixed to a swinging bar 46 that projects horizontally from the upper front of the sewing machine to the front. As is apparent from the one-dot chain line in FIG. 9, the looper 42 descends to a position 42a behind the needle hole of the needle immediately after the sewing needle 40 advances to the front end and moves backward, and rises with the backward movement of the needle 40. When retracted to the rear end, the needle tip descends to the front position 42b.
[0026]
The thread winding platform 48 of the sewing thread 7 is disposed at the rear center of the table 12 (FIG. 7) and is located on the rear side of the sewing machine 14. The mounting table 48 has one or two or more sets of a thread stand 50 and a thread stand 52, and a thread guide bar 54 is horizontally attached thereon. The sewing thread 7 to be passed through the sewing needle 40 is supplied to the needle 40 from the thread winding of the mounting table 48, over the thread guide bar 54, and through the thread guide table assembly 56 installed above the sewing machine 14.
[0027]
8 and 9, on the front surface of the sewing machine 14, a first guide plate 60 having a U-shaped portion 58 for receiving the upper edge portion of the tape material 2 and a horizontal portion 62 in contact with the lower edge portion of the tape material. And a second guide plate 64 having a vertical position, which are adjacent to each other substantially vertically. The first guide plate 60 is mounted so that the U-shaped portion 58 is positioned tangentially on the horizontal plane immediately before the left side of the protruding base 34 and the presser disc 36 (see FIG. 10), and when the nuts 66 and 66 are loosened, the first guide plate 60 is positioned vertically. It can be changed. The second guide plate 64 is positioned below the presser disk 36 and can be repositioned in the vertical direction by adjusting the clamp 68. The vertical distance between the upper part of the inner peripheral surface of the U-shaped portion 58 of the first guide plate 60 and the upper surface of the horizontal portion 62 of the second guide plate 64 corresponds to the lateral width of the tape material 2 that is horizontally conveyed in the longitudinal direction.
[0028]
The first and second guide members 16 and 18 shown in FIG. 8 are arranged so as to be aligned with the guide plates 60 and 64 on both front sides of the sewing machine 14. Each of the guide members 16 and 18 includes a guide plate 76 in which a large number of guide bars 74 are installed vertically and in parallel between the support plate 70 and the horizontal plate 72, and through holes that are fitted to the guide bars 74 are provided. It is attached between the support plate 70 and the horizontal plate 72. The guide plate 76 can be fixed at an arbitrary horizontal position by tightening butterfly bolts 78 screwed into both end faces according to the width of the tape material 2 that travels. The tape material 2 passes between the horizontal plate 72 and the guide plate 76 while turning around the guide bar 74 alternately left and right.
[0029]
On the other hand, the horizontal guide member 22 is positioned behind the second guide member 18 on the table 12, and the upper end surface of the horizontal guide member 22 is high so as to be approximately halfway between the horizontal plate 72 and the guide plate 76 of the guide member 18. The position can be adjusted. The horizontal guide member 22 installs a large number of guide bars 80 horizontally and parallel between the upper left and right ends. After the edge sewing, the tape material 2 exits the second guide member 18 and becomes horizontal from the vertical direction, and passes around the guide bar 80 while turning around the top and bottom alternately. The pair of rollers 24, 24 are arranged side by side in the vertical direction as shown in FIG. 12 and are installed rotatably behind the horizontal guide member 22. The pair of rollers 24, 24 rotate intermittently in synchronization with the sewing machine 14, and the pressing force can be adjusted by pressing the upper roller to the lower roller with the bolts 82 on the left and right sides. In the vicinity of the lower part of the roller 24, an opening 84 (FIG. 12) is provided in the table 12, and the tape material 2 picked up by the pair of rollers 24, 24 is sent out to the lower part of the table. Take up at 86. When winding the tape material 2 from the rollers 24 and 24 onto the core 86 via the roller 88 that can move up and down, when the roller 88 reaches the lower end position, a limit switch (not shown) is closed and the motor 89 causes the core 86 to move. On the other hand, when the roller 88 reaches the upper end position, another limit switch is opened and the rotation of the motor 89 is stopped. If desired, the pair of rollers 24 may be heatable metal rollers that heat-press the tape material 2 after edge stitching, and knurling the roller surface so that the surface of the tape material does not shine. Or cover with a cylindrical cloth.
[0030]
As is well known, a large number of tape materials 2 are manufactured simultaneously from the wide woven fabric 3 (FIG. 15), and the weaving mechanism 90 (FIG. 16) is used for weaving the wide woven fabric 3. The weaving mechanism 90 is configured by combining, for example, a wide loom 92 such as a high-speed rapier loom, a projectile loom, an air jet loom, and a jacquard machine 94 that performs warp opening movement when weaving a wide fabric. The organization may be any of plain weave, oblique weave, and satin weave. In the jacquard machine 94, the wide loom 92 can weave a complicated pattern according to the pattern of the paper pattern, and the wide woven fabric 3 having the letters 96 (FIG. 3) or the design with the woven tape portion 2a arranged in a strip shape is woven. To do. The obtained wide woven fabric 3 has a width of 70 to 260 cm, and is heat-cut between the guide yarns 97 and 97, for example, in a band shape by a cutting device installed in front of or behind the breast beam 96 of the wide loom 92. This cutting apparatus is composed of, for example, a plurality of knives 98 arranged in parallel at regular intervals, and each knife is heated to about 280 ° C., which is higher than the melting point of the polyester fiber. A large number of heat-cut tape materials 2 have linear fiber melted portions (not shown) on both side edges, and each tape material is wound around a core 100 by a wide loom 92.
[0031]
The obtained core 100 of the tape material 2 is placed on a circular seat of the mounting table 20 in the one-side sewing device 10 of FIG. 7, and the tape material 2 is pulled out from the core and conveyed in the horizontal direction by the first guide member 16. To do. The first guide member 16 feeds the tape material 2 standing in the longitudinal direction to the edge sewing machine 14, and the tape between the U-shaped portion 58 of the first guide plate 60 and the horizontal portion 62 of the second guide plate 64. The material 2 is accurately positioned and is intermittently sent in the direction of the arrow in FIG. 7 by the protruding base 34 and the presser disc 36. For the tape material 2, the upper portion from the needle position 40b in FIG. 11 is the edge stitching width h, and the edge stitching width h can be adjusted by appropriately moving the tape position up and down.
[0032]
Referring to FIG. 11, when the sewing needle 40 moves forward and pierces the stopped tape material 2 at, for example, a point 102a, the sewing thread 7 passed through the needle hole passes from the back side of the tape together with the sewing needle 40 to the front side, and on the front side of the tape. A thread ring portion 104 is generated. Immediately after the needle 40 advances to the position 40c in FIG. 9 and starts to retract, the looper 42 descends to a position 42a behind the needle hole of the needle 40 on the tape front side, and further turns to catch the thread ring portion 104. . Next, the needle 40 moves backward and comes out of the tape material 2, and the tape material 2 moves intermittently by a distance d in the direction of the arrow in FIG. 11, that is, in the direction of the arrow in FIG. The looper 42 ascends while the thread needle portion 40 is hooked with the retraction of the sewing needle 40, further moves backward from the tape front side to the back side, and starts to descend when it comes to the tape back side. When the sewing needle 40 is retracted to the position indicated by the solid line in FIG. 9, the looper 42 with the thread ring portion 104 hooked is lowered to the front position 42b of the needle tip. At this time, the sewing thread 7 of the thread ring portion 104 is in direct contact with the upper surface of the front end portion of the presser foot 37 without being in direct contact with the side edge of the tape material 2. When the sewing machine needle 40 moves forward again, the looper 42 rotates backward to disengage from the thread ring part 104, and the needle passes through the thread ring part 104 pulled out by the looper 42 on the back side of the tape. Pierce. As a result, the thread ring portion 104 of the sewing thread 7 can be sewn to the side edge of the tape. As the sewing machine needle 40 advances, the looper 42 starts to rise, and the next thread ring portion 104 is sewn at the position 40b by the same operation as described above. Thus, the previous thread ring portion 104 is disengaged from the tip of the presser foot 37 and the sewing thread 7 of the thread ring portion 104 is in direct contact with the side edge of the tape. The sewing thread 7 of the thread ring portion 104 does not come into direct contact with the side edge of the tape during tightening when a strong tensile force is generated, so that the sewing thread 7 does not break or fluff regardless of the hardness or softness of the tape material 2 and is always constant. A single ring stitch 8 can be formed. Hereinafter, the above operation is repeated to perform edge stitching.
[0033]
In the tape material 2 that has passed through the one-side stitching device 10, one sewing thread 7 that forms the single-ring stitch 8 intersects the fiber melted portion on the side edge of the tape, and the seam continuously exists without overlapping. Actually, the sewing thread 7 is in close contact with the gap as shown in FIG. 11, and even the thin sewing thread covers the fiber melted portion densely. With respect to the one-side sewing device 10, when one side edge of the tape material 2 is sewed, the tape material 2 is wound around the core 86 (FIG. 12), and the wound tape material 2 is passed through the device 10 again, as shown in FIG. A woven tape 106 having both side edges sewn is obtained. In the woven tape 106, the inclination of the sewing thread 7 of the single ring stitch 8 on both side edges is substantially the same as seen from the plane, and if it is a repetitive pattern, it may be cut for each label to form a woven label. In this type of tape, since the thin sewing thread 7 is used and the thread piercing points 102a and 102b are only one line in a straight line, the edge sewing width h can be easily increased by appropriately raising and lowering the tape position at the time of sewing. It can be adjusted, and if the edge sewing width h is made as narrow as possible, the aesthetic appearance of the tape is hardly impaired. For the woven tape 106, the weft thread of the tape material 2 may be used as the sewing thread 7, and the color and design of the entire tape can be unified.
[0034]
The woven label 110 shown in FIG. 3 is produced from the edge-stitched tape 112 (FIG. 2). In the label 110, the inclination of the sewing thread 116 of the single-ring stitches 114 and 115 at both side edges is substantially centerline symmetric when viewed from the label plane, thereby effectively preventing the label 110 from being twisted. In order to obtain the tape 112, the tape material 2 is run once by the double-side stitching device 118 (FIG. 13). At each side edge of the tape 112, one sewing thread 116 forming the single ring stitches 114 and 115 intersects the fiber melted portion of the tape side edge, and the seam continuously exists without overlapping, and the thin sewing thread 116 also densely coats the fiber melt. The tape 112 may be used as it is as long as it is a series of patterns. The tape 112 is heat-cut in the horizontal direction for each label at the position of the alternate long and short dash line in FIG. 2 to obtain the woven label 110 shown in FIG. The label 110 is end-held at the position of the one-dot chain line in FIG. 3 in the subsequent folding process.
[0035]
The double-side stitching device 118 for manufacturing the tape 112 has a structure in which two devices 10 in FIG. 7 are combined. However, the first sewing machine 120 feeds the tape material 2 in the direction of the arrow in FIG. 14 (FIG. 7) is opposite to the tape feeding direction. Further, since the second sewing machine 122 feeds the tape material 2 in the direction of the arrow in FIG. 13, the tape feeding direction is the same as that of the sewing machine 14 (FIG. 7). With respect to the first sewing machine 120, the tape material 2 that has come out of the tape core mounting table 124 is sent to the sewing machine 120 through the vertical rollers 126 and 128 and the guide member 130, and the guide member 130 is guided to the guide member 16 (FIG. 8). Is the same structure. The tape material 2 that has passed through the sewing machine 120 passes through the horizontal guide member 136 and a pair of upper and lower rollers 138 through vertical rollers 132 and 134, and the guide member 136 and the roller 138 include the horizontal guide member 22 and the roller 24 (FIG. 7). The structure is almost the same. The second sewing machine 122 has the same structure as that of the sewing machine 14 (FIG. 7).
[0036]
As shown in FIG. 14, an opening 142 is provided in the table 140 below the roller 138 on the sewing machine 120 side. The tape material 2 picked up by the pair of rollers 138 and 138 is sent to the lower side of the table 140 through the opening 142, is swung around the roller 144 that can move up and down from both rollers, and further, the upper horizontal roller 145 and the horizontal guide member 146, and sent to the vertical rollers 148 and 150 on the sewing machine 122 side. Due to the up-and-down movement of the roller 144, the deviation of the feed speed between the sewing machines 120 and 122 can be reduced. On the other hand, on the sewing machine 122 side, an opening 156 is provided in the table 154 near the lower side of the take-up roller 152, and the tape material 2 taken up by the pair of rollers 152 is sent to the lower side of the table. 2 is wound around a core through a roller (not shown) that can move up and down.
[0037]
In the double-side stitching device 118, the core 158 of the tape material 2 is placed on the circular seat of the mounting table 124, and the tape material 2 is pulled out from the core and conveyed in the horizontal direction by the guide member 130. The guide member 130 feeds the tape material 2 standing in the longitudinal direction to the sewing machine 120 to accurately position the tape material, and intermittently feeds the tape material to the left by the presser disk 160 while one of the single ring stitches 115 (FIG. 2) will be formed. The tape material 2 with one side stitched is taken out in the horizontal direction through the guide member 136 and the rollers 138 and 138, and further fed out in the horizontal direction by the rollers 144 and 145 and the guide member 146. The tape material 2 stands in the longitudinal direction in the vertical roller 148, and at this time, the single ring stitch 115 is positioned on the lower side. Further, the tape material 2 is fed to the sewing machine 122 by the guide member 162, and the other single-ring stitch 114 (FIG. 2) is formed while intermittently feeding it to the right by the presser disk 164. The tape 112 having the edges sewn on both sides is taken up by the rollers 152 and 152 and wound around the core below the table 154.
[0038]
In yet another woven label 166 shown in FIG. 6, the side edges 168 of the turn-up point 167 are slightly recessed. The tape material 170 that is cut into the woven label 166 is partially woven with a shrinkable yarn 172 as a weft, and the shrinkable yarn can be folded into each folded portion 174 as shown in FIG. 3-5 pieces may be woven into only the place. The shrinkable yarn 172 to be used is, for example, a white polyester highly shrinkable yarn (manufactured by Toray), a nylon yarn, or a rayon yarn that is water-shrinkable. The woven label 166 is partially shrunk by a predetermined shrinking process, and the width of the dent varies depending on the material and dimensions of the woven label 166, but is generally preferably 0.1 to 0.4 mm.
[0039]
In order to manufacture the label material 175 (FIG. 5) from the tape material 170, when weaving the wide woven fabric 176 (FIG. 17), which is a synthetic fiber yarn for both warp and weft, weft yarn is used at a portion that becomes a bent portion at the time of sewing. As described above, the shrinkable yarn 172 is partially woven at a label interval, and then the wide fabric 176 is heat-cut into a strip shape for each tape portion 170a. The obtained tape material 170 (FIG. 4) is fed to the both-side stitching device 118, and the both-side edges are stitched by the device to form single-ring stitches 177 and 177. Next, when the tape material 170 sewed on both edges is heated to about 140 ° C. and pressed, both side edges of the bent portion 167 are recessed, for example, by about 0.3 mm as shown in FIG. If desired, the label material 175 is processed with resin using chemical glue or the like to adjust the shape. The label material 175 is heat-cut in the horizontal direction for each label by a separate heat-cut device (not shown) after resin processing, and each cut position is a mark 178 location. The obtained woven label 166 is end-held in a subsequent bending process and then pressed.
[0040]
In the woven label 166, the fiber melted portion is bent downward by denting both side edges of the folded portion 167, and no protruding piece of the fiber melted portion is generated at the corner 182 of the both side edges in the folding line 180 as shown in FIG. . Further, since the width of the folded portion 167 is slightly narrowed, it is not exposed from the edge of the label body when the portion is folded back, which is preferable from the aesthetic point of view.
[0041]
【The invention's effect】
The woven tape according to the present invention is more aesthetically pleasing and has a better tactile sensation than the woven tape obtained by heat-cutting a wide woven fabric in a band shape, with the edge stitches on both side edges being inconspicuous. Even if the woven label obtained from the woven tape is bent at the time of sewing, no protruding piece is generated, and the wearer does not feel uncomfortable. When the woven label is sewn on the underwear, a good feeling of the underwear is maintained. When the woven label is sewn on an outer garment such as ski wear, the sweater or inner shirt worn underneath is not damaged.
[0042]
The edge stitching method of the present invention can provide a beautiful woven tape having a good edge feel and a narrow edge stitching width by tightly wrapping the fiber melted portions of both edges with sewing threads. It is more preferable in terms of the aesthetics of the woven tape to sew with the same thread as the weft. In this edge stitching method, the woven tape is not pulled at the time of edge stitching, and there is no sewing irregularity, thread breakage or fluffing of the sewing thread, so that the woven tape can be automatically and quickly edge-sewn. it can.
[Brief description of the drawings]
FIG. 1 is a schematic plan view showing an example of a woven tape obtained by heat-cutting a wide woven fabric and sewing both edges.
FIG. 2 is a schematic plan view showing another woven tape having both side edges sewn.
FIG. 3 is a schematic plan view showing an edge stitching label obtained by cutting the woven tape of FIG. 2;
FIG. 4 is a schematic plan view showing still another woven tape in which a heat-shrinkable yarn is woven into a folded portion.
FIG. 5 is a schematic plan view after the shrinkage process is performed on the woven tape of FIG. 4;
6 is a perspective view showing a state in which an edge-sewn label cut from the woven tape of FIG. 5 is end-held. FIG.
FIG. 7 is an overall plan view schematically showing an apparatus for sewing a side edge of a woven tape one side at a time.
8 is an enlarged partial front view showing a sewing machine part of the apparatus shown in FIG. 7;
9 is a partial side cross-sectional view showing an enlarged view along the line AA in FIG. 8, and is a main-part side cross-sectional view omitting a presser foot and the like.
FIG. 10 is a partial plan view at substantially the same position as FIG. 9, and is a plan view of the main part with a presser foot added and the enlargement ratio changed.
FIG. 11 is an enlarged side view showing a side edge of the tape that has been edge-sewn from the back side, and is a partial side view that is deformed so that the state of edge sewing can be easily understood.
12 is a partial side sectional view schematically showing a tape winding portion of the apparatus of FIG.
FIG. 13 is an overall plan view schematically showing a device for continuously sewing both side edges of a tape.
14 is a partial side cross-sectional view schematically showing a portion to be fed from one sewing machine side to the other sewing machine side in the apparatus of FIG. 13; FIG.
FIG. 15 is a partial plan view illustrating a wide woven fabric for obtaining the woven tape of FIG. 1 or FIG. 2;
FIG. 16 is a schematic front view illustrating a loom with a jacquard used for weaving a wide fabric.
FIG. 17 is a partial plan view showing a wide woven fabric for obtaining the woven tape of FIG. 4;
[Explanation of symbols]
2 Tape material
3 Wide fabric
5,5 Tape side edge
7 Sewing thread
8 Single ring sewing
10 One-side sewing device
14 Edge sewing machine
34 Projection stand
36 Presser disc
37 Presser foot
40 sewing needles
42 Looper
58 U-shaped part
60 First guide plate
62 Horizontal
64 Second guide plate
114,115 Single ring sewing
118 Double-side stitching device
172 Shrinkable yarn

Claims (8)

A woven tape obtained by heat-cutting a wide woven fabric, the fiber melted part formed on both side edges by this heat-cut, and the sewing thread of the thread ring part along the vicinity of the tape side edge crosses the tape side edge to the tape side By having a single ring stitch that continues in the lateral direction by being sewn to the edge, each sewing thread that forms the single ring stitch is in close contact with each other while crossing the side edge of the tape. Edge stitched tape that covers the fiber melted part of the side edges and flattens it by post-processing hot press to make the entire tape approximately the same thickness . A woven tape obtained by heat-cutting a wide woven fabric, the fiber melted part formed on both side edges by this heat-cut, and the sewing thread of the thread ring part along the vicinity of the tape side edge crosses the tape side edge to the tape side It has a single ring stitch that continues in the lateral direction by being sewn to the edge, and one sewing thread forming the single ring stitch is in close contact with each other while crossing the side edge of the tape. substantially center line symmetrical der Ru hemmed tape slope of sewing suture to see from the tape plane.   An edge-sewn label obtained by cutting the tape according to claim 1 or 2 in a transverse direction.   4. The label according to claim 3, wherein the shrinkable yarn is partially woven as a weft thread into a portion to be bent at the time of sewing, and both side edges of the portion to be bent are slightly recessed by a shrinking process after weaving.   In a method of manufacturing a hem stitching tape from a tape material having fiber melted portions on both side edges, the tape material is fed upright in the longitudinal direction, and the sewing machine includes a horizontal operation sewing needle and a front and rear swing looper. An edge stitching tape manufacturing method for forming a single ring stitch that continues in a lateral direction while feeding a sewing thread back and forth along the vicinity of one tape side edge.   In a method of manufacturing a hem stitching tape from a tape material having fiber melted portions on both side edges, the tape material is fed upright in the longitudinal direction, and the sewing machine includes a horizontal operation sewing needle and a front and rear swing looper. Form a single-ring stitch that continues in the lateral direction while feeding the sewing thread back and forth along the vicinity of one side edge of the tape, then reverse the tape material in the longitudinal direction, and a horizontal operation sewing needle and a forward and backward swing looper An edge-sewing tape manufacturing method for forming a single-ring stitch that continues in the transverse direction while feeding a sewing thread back and forth along the vicinity of the other tape side edge.   When the sewing needle passes below the tip of the presser foot and the looper with the thread ring hooked is lowered to the front position of the needle tip, the sewing thread of the thread ring must be in direct contact with the side edge of the tape. The sewing thread in the thread ring part does not come into direct contact with the side edge of the tape when tightening, which causes a strong tensile force, and is always constant regardless of the hardness and softness of the tape. The method according to claim 5 or 6, wherein a single ring stitch is formed.   The tape material to be fed is positioned by a first guide plate that receives the upper edge of the tape material and a second guide plate that contacts the lower edge, and the first and second guide plates can be displaced in the vertical direction, respectively. The method according to claim 5 or 6, wherein a vertical distance between the upper part of the inner peripheral surface of the U-shaped portion of the guide plate and the upper surface of the horizontal portion of the second guide plate corresponds to the lateral width of the tape material.

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