JP2013256592A - Binding tape - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a binding tape capable of firmly binding a to-be-bound object with a binding condition hardly relaxed for a long period of time.SOLUTION: A binding tape 10 is such as to bind a to-be-bound object by thermal welding with the object wrapped therewith with the tape length direction being its winding direction, comprising a woven fabric composed of first threads 11 extending to the tape transverse direction and second threads 12 extending to the tape length direction, wherein the first threads 11 comprise low-melting threads 16 with a melting point lower than the temperature being lower one among the melting point and decomposition point of the surface of the to-be-bound object, and the second threads 12 comprise thermally shrinkable threads with the melting point higher than the melting point of the low-melting threads 16 and the thermal shrinkage temperature or lower than the melting point of the low-melting threads 16.

Description

  The present invention relates to a tape used for binding articles and the like.

For bundling articles and the like, an adhesive tape in which an adhesive is applied to a band-shaped tape base material made of cellophane or polyvinyl chloride may be used.
However, the pressure-sensitive adhesive tape has poor durability because the tape base material and the pressure-sensitive adhesive easily deteriorate with time. For this reason, binding has become loose after long-term use.

On the other hand, Patent Documents 1 to 4 propose a tape in which a heat-welding thread is woven or knitted into a woven or knitted fabric made of chemical fiber, natural fiber, or the like.
These tapes are considered to be less likely to deteriorate with time because the tape base material is made of chemical fiber or the like and is bonded by welding a heat-welding yarn.
However, these tapes are used to fold the fabric end of the trousers or skirt on the base side and bond the folded fabric end to the body. For this reason, shrinkage of the entire tape (particularly in the tape length direction) due to heating at the time of bonding is not preferable because it causes dragging and wrinkles at the bottom.

Although not a tape, in Patent Document 5, a heat-shrinkable yarn is woven so that it appears on one side in a large amount, and a heat-weldable synthetic resin adhesive is applied to the surface on which the heat-shrinkable yarn appears a little. An interlining has been proposed.
This interlining is the outer fabric where the heat-shrinkable yarn, which appears on the surface opposite to the adhesive surface, shrinks when bonded to the back of the outer fabric of the clothes using an iron etc. It is intended to provide bending properties and is not described or suggested for use in bundling articles.

JP 54-125769 A Japanese Utility Model Publication No. 56-18585 Japanese Utility Model Publication No. 56-78839 Japanese Utility Model Publication No. 57-92741 Japanese Utility Model Publication No. 53-34449

  An object of the present invention is to provide a binding tape that can firmly bind objects to be bound and that does not loosen for a long time.

  In order to solve the above-mentioned problem, the binding tape of the present invention is a binding tape that is wound around a binding object with the tape length direction being a winding direction and binds the binding object by thermal welding, It consists of a woven fabric woven by a first yarn extending in the width direction and a second yarn extending in the tape length direction, and the first yarn has a lower melting point or decomposition point of the surface portion of the bound object. A heat-shrinkable yarn comprising a low-melting yarn having a lower melting point than the other temperature, wherein the second yarn has a melting point higher than the melting point of the low-melting yarn and the temperature of heat shrinkage is not more than the melting point of the low-melting yarn. It is characterized by including.

  Another bundling tape of the present invention is a bundling tape that is wound around a bundling object with the tape length direction being a winding direction, and bundling the bundling object by thermal welding, and is a first tape extending in the tape width direction. The first yarn is a low-melting yarn having a melting point lower than that of the heat-shrinkable yarn contained in the second yarn. And the second yarn includes a heat-shrinkable yarn having a temperature at which the heat shrinkage is not higher than the melting point of the low-melting yarn contained in the first yarn.

  The binding tape of the present invention is such that the heat-shrinkable yarn extending in the winding direction is heat-shrinked by heating to a temperature equal to or higher than the melting point of the low-melting yarn, and the object to be bound is firmly bound, and the low-melting yarn Since the portions which are melted and overlap each other are welded together, the adhesive force does not decrease even when used for a long period of time, and the binding becomes difficult to loosen.

  The aspect of each element in the present invention is exemplified below.

1. The object to be bound is not particularly limited, and examples thereof include cables such as power transmission cables and communication cables, pipe bodies such as vinyl chloride pipes, and box bodies such as cardboard boxes.

2. Woven cloth Although the structure of the woven cloth is not particularly limited, plain weaving, Nanako weaving, Sugi twill weaving and the like can be exemplified, and plain weaving is preferable because sufficient strength can be secured.
The yarn density of the woven fabric varies depending on the thickness of the yarn and is not particularly limited, but 30 to 150 yarns per 2.54 cm (1 cm) can be exemplified, and preferably 50 to 100 yarns. The yarn density of the woven fabric is preferably such that the gap between the yarns is as small as possible. The warp yarn density and the weft yarn density may be the same or different.

3. The first yarn The first yarn is not particularly limited, but may be a warp yarn or a weft yarn.
The first yarn is not particularly limited, but may include only a low-melting yarn (that is, only a low-melting yarn) or may further include a yarn other than the low-melting yarn.
An embodiment further including a yarn other than the low-melting yarn, that is, an embodiment composed of the low-melting yarn and the yarn other than the low-melting yarn is not particularly limited, but the low-melting yarn and the yarn other than the low-melting yarn are twisted and crossed. Examples include an embodiment in which the yarn is twisted, and an embodiment in which the low-melting yarn and the yarn other than the low-melting yarn are alternately arranged in the same number (for example, one or two).
The yarn other than the low-melting yarn is not particularly limited, but it is a high-melting yarn whose melting point is higher than the melting point of the low-melting yarn because the shape of the woven fabric can be prevented from being lost when the low-melting yarn is melted. It is preferable. Further, since the change in the tape width after heat welding (the width becomes narrower) can be reduced, it is preferable that the yarn other than the low-melting yarn has a small thermal shrinkage (for example, a yield of less than 10%). The lower limit of the yield of yarns other than the low-melting yarn is not particularly limited, but may be 0% or more.

Here, boiling yield refers to the boiling water shrinkage and is the ratio of the difference in length when a predetermined load (0.1 g / d) is applied before and after boiling water treatment.
Specifically, a load of 0.1 g / d is applied to the sample, and the length (Lb) before boiling water treatment is measured.
Thereafter, the sample is treated with boiling water for 15 minutes under no load.
Thereafter, a load of 0.1 g / d is applied to this sample, and the length (La) after boiling water treatment is measured.
And it is a value calculated by the following formula.
Boiling water shrinkage rate = ((Lb−La) / Lb) × 100 (%)

4). Second Yarn The second yarn is not particularly limited, but may be a warp or a weft.
The second yarn is not particularly limited, but may include only a heat shrink yarn (that is, a yarn made of only the heat shrink yarn), or may further include a yarn other than the heat shrink yarn.
An embodiment further including a yarn other than the heat shrink yarn, that is, an embodiment composed of the heat shrink yarn and the yarn other than the heat shrink yarn is not particularly limited, but the heat shrink yarn and the yarn other than the heat shrink yarn are twisted and crossed. Examples include a twisted yarn mode, a mode in which heat shrink yarns and yarns other than heat shrink yarns are alternately arranged in the same number (for example, one or two).
The yarn other than the heat-shrinkable yarn is not particularly limited, but is preferably a low-melting yarn because it does not inhibit the heat-shrinkage of the heat-shrinkable yarn and strengthens the adhesive force.

5. Low melting point yarn The melting point of the low melting point yarn is not particularly limited, but is preferably 75 to 155 ° C. If the melting point is less than 75 ° C., there is a risk of welding during storage. On the other hand, if the melting point exceeds 155 ° C., the heating temperature for welding becomes high, and there is a risk that heat degradation occurs in the bound material and the heat shrinkable yarn during heating. A more preferable melting point is 95 to 115 ° C.
Although the linear density of the low melting point yarn is not particularly limited, it can be exemplified by 20 to 300 denier, and preferably 75 to 300 denier.
As a specific example of the low melting point yarn, a trade name “Flor M” of Unitika Co., Ltd., which is a copolymer nylon yarn, can be mentioned.

6). High melting point yarn The high melting point yarn is not particularly limited, and examples thereof include nylon yarn and polyester yarn.
The linear density of the high-melting yarn is not particularly limited, but may be 20 to 300 denier, and preferably 30 to 150 denier.

7). Heat-shrinkable yarn The heat-shrinkable yarn is not particularly limited, but it is preferable that heat shrinkage is large (for example, boiling yield is 10% or more) because the objects to be bound can be firmly bound. In addition, the upper limit of the boiling yield of the heat-shrinkable yarn is not particularly limited, but 30% or less can be exemplified. The preferable range of boiling yield of heat-shrinkable yarn is 15 to 25%.
The linear density of the heat-shrinkable yarn is not particularly limited, but may be 20 to 300 denier, and preferably 75 to 300 denier.
As a specific example of the heat-shrinkable yarn, there can be mentioned a trade name “Tetron” type 143 of Toray Industries, Inc., which is a heat-shrinkable polyester yarn whose heat shrinkability is improved by polymer modification.

8). Heat welding The heating temperature for fusing the low-melting yarn is equal to or higher than the melting point of the low-melting yarn, the melting point of the heat-shrinking yarn, the melting point of the high-melting yarn, the melting point of the surface portion of the bundle and the decomposition point. The temperature is not particularly limited as long as it is lower than the lowest temperature among them, but if this temperature is too high, heat deterioration may occur in the material to be bound or the heat-shrinkable yarn. It is preferable that the temperature is 20 ° C. or higher than the melting point of the low-melting yarn.

  ADVANTAGE OF THE INVENTION According to this invention, the to-be-bundled material can be bound firmly, and the binding tape which the binding cannot loosen for a long term can be provided.

(A) of the binding tape of the Example of this invention is a front view, (b) is a front view of the thread | yarn extended in a tape width direction. It is a perspective view of the cable bundling work by the bundling tape.

  A binding tape 10 according to an embodiment of the present invention will be described with reference to FIGS.

  As shown in FIG. 1a, the binding tape 10 has a belt-like shape, and is made of a woven fabric woven into a plain weave by a thread 11 extending in the tape width direction and a thread 12 extending in the tape length direction. .

  As shown in FIG. 1b, the yarn 11 extending in the tape width direction is a low-melting-point nylon yarn having a linear density of 100 denier (Unitika's trade name “Flor M”, type 25A7, brand 110T12) 16 as a core yarn. A twisted yarn in which a nylon yarn (trade name “Regular Nylon 30D SD”, trade name of Toray Industries, Inc.) 17 having a linear density of 30 denier is wound around and covered. This low melting point nylon yarn is a low melting point yarn, and the nylon yarn is a high melting point yarn. Further, the melting point (dry heat) of this low-melting nylon yarn, that is, trade name “Flor M”, type 25A7, brand 110T12 of Unitika, is about 105 ° C.

  The yarn 12 extending in the tape length direction is a heat-shrinkable polyester yarn having a linear density of 75 denier (trade name “Tetron”, type 143, type 84T12 manufactured by Toray Industries, Inc.). This heat-shrinkable polyester yarn is a heat-shrinkable yarn. The heat shrinkage of the heat-shrinkable polyester yarn, that is, Toray's trade name “Tetron”, type 143, variety 84T12, is about 21%.

A method for making the binding tape 10 will be described.
Using a twisted yarn 11 of a low melting point nylon yarn 16 and a nylon yarn 17 as a warp, and using a heat-shrinkable polyester yarn 12 as a weft to make a plain weave, and a woven fabric having a warp and weft density of 90 yarns / knot create.
The woven fabric is cut using a laser cutting machine or the like substantially parallel to the direction in which the wefts extend (that is, the warp is cut) to obtain a band-like binding tape 10.

The operation of binding the cable 20 with the binding tape 10 will be described.
As shown in FIG. 2a, a plurality of (four in FIG. 2) cables 20 in which copper wires 21 are coated with a covering material 22 such as polyvinyl chloride are bundled so as to extend in parallel with each other. The tape 10 is wound with the tape length direction being the winding direction, and the binding tape 10 is wound around the cable 20 so that the portion wound outwardly overlaps the portion wound inside as shown in FIG. . In this state, the heat-shrinkable polyester yarn 12 extends in the circumferential direction (winding direction) of the cable 20, and the intertwisted yarn 11 of the low melting point nylon yarn 16 and the nylon yarn 17 extends in the length direction of the cable 20.
Then, the binding tape 10 is pressed from the outside with an iron whose surface temperature is adjusted to 105 ° C., the heat-shrinkable polyester yarn 12 is thermally shrunk to bind the cable 20 firmly, and the low-melting nylon yarn 16 is melted. The overlapping portions of the bundling tape 10 are bonded with a melted low melting point nylon thread 16.
Then, the iron is separated from the binding tape 10 to cool the binding tape 10.

  The following test was conducted on the binding tape 10 of this example. As a comparative example, the same test was performed on a filament tape (trade name “Scotch Filament Tape” manufactured by Sumitomo 3M).

(1) Tear test Based on JIS L 1096 8.17.3 C method (Travezoid method), it was performed on the test conditions of the tensile rate of 20 cm / min.
The tear strength of this example was 23.6 N in the direction in which the warp extends (hereinafter sometimes referred to as the warp direction) and 107 N in the direction in which the weft extends (hereinafter sometimes referred to as the weft direction).
On the other hand, the tear strength of the comparative example was 244N in the warp direction and 3.7N in the weft direction.

(2) Tensile test In accordance with JIS L 1096 8.14.1 A method (cut strip method), a constant speed extension type is used for the testing machine (type), and the gripping interval is 20 cm in the warp direction and 2 cm in the weft direction. The tensile speed was 20 cm / min in the warp direction, the weft direction was 2 cm / min, the test piece width was 5 cm for the test piece in the warp direction, and the test piece in the weft direction was 1 cm.
The tensile strength of this example was 271N in the warp direction and 95.4N in the weft direction.
On the other hand, the tensile strength of the comparative example was 3370N in the warp direction and 107N in the weft direction.
The tensile elongation of this example was 49% in the warp direction and 80.5% in the weft direction.
On the other hand, the tensile elongation of the comparative example was 5.4% in the warp direction and 45.9% in the weft direction.

(3) Abrasion test JIS L 1096 8.19.5 E method (Martindale method) is applied mutatis mutandis, and abrasive paper # 2000 (CC40P P2000) is used as the abrasion paper under a test condition of a pushing load of 9 kPa. Evaluation was made by subsequent appearance observation.
Since both the present example and the comparative example showed a small amount of deterioration with respect to 400 wears, the present example has abrasion resistance comparable to that of the comparative example.

(4) Actual machine test As an actual machine test, the use of a device having a movable part for a cable and cutting with a laser cutting machine were performed.

In order to bind a plurality of cables connecting the movable part and other parts of a device having a movable part that moves linearly in the horizontal direction, the binding tape 10 of this embodiment is used instead of the cable carrier (registered trademark). used.
The equipment was in operation for about 4 months, but no problems occurred.
In addition, when the binding tape 10 is wound around the cable, the grease (gel-like oil and fat) applied to the outside of the cable enters the texture of the binding tape 10 (so that the grease impregnates). The efficiency of conduction increased, and cable bundling could be performed more neatly.

A cutting test of the binding tape 10 of this example was performed using a laser cutting machine.
The cut ends were neatly melted and no fiber chips appeared.

According to the binding tape 10 of this embodiment, the following effects can be obtained.
The bundling tape 10 is heated to 105 ° C., which is the melting point of the low-melting nylon yarn 16, so that the heat-shrinkable polyester yarn 12 extending in the winding direction is thermally shrunk to firmly bind the cable 20, and has a low melting point Since the portions where the nylon thread 16 is melted and overlapped with each other are welded together, it is possible to make it difficult for the cables 20 to be loosened for a long period of time.
Since the low melting point nylon yarn 16 having a melting point of about 105 ° C. is used, it can be welded by heating at 105 ° C., and no thermal deterioration occurs in the covering material 22 of the cable 20, the heat shrinkable polyester yarn 12 and the nylon yarn 17. .
-Since the heat shrinkable polyester yarn 12 having a boiling yield of about 21% is used, the heat shrinkage during heating is increased, and the binding force can be increased.
-Since the yarn extending in the tape width direction (the length direction of the cable 20) is the intertwisted yarn 11 of the low melting point nylon yarn 16 and the nylon yarn 17, the shape of the woven fabric cannot be maintained after heat welding. Can be prevented.
-Since the yarn extending in the tape width direction (the length direction of the cable 20) is a twisted yarn 11 covered with a low-melting point nylon yarn 16 as a core yarn and wrapped around the nylon yarn 17, the heat-welded The tape width can be prevented from becoming narrow.

  In addition, this invention is not limited to the said Example, In the range which does not deviate from the meaning of invention, it can change suitably and can be actualized.

10 Bundling Tape 11 Twisted Yarn 12 Heat Shrinkage Polyester Yarn 16 Low Melting Point Nylon Yarn 17 Nylon Yarn 20 Cable 22 Covering Material

Claims (5)

A tape for binding that is wound around the object to be bound with the tape length direction being the winding direction, and that binds the object to be bound by heat welding,
It consists of a woven fabric woven by a first thread extending in the tape width direction and a second thread extending in the tape length direction,
The first yarn includes a low melting point yarn having a melting point lower than the lower one of the melting point and the decomposition point of the surface portion of the bound object,
The binding tape, wherein the second yarn includes a heat-shrinkable yarn having a melting point higher than that of the low-melting yarn and a temperature at which heat shrinkage is not higher than the melting point of the low-melting yarn. A tape for binding that is wound around the object to be bound with the tape length direction being the winding direction, and that binds the object to be bound by heat welding,
It consists of a woven fabric woven by a first thread extending in the tape width direction and a second thread extending in the tape length direction,
The first yarn includes a low melting point yarn whose melting point is lower than the melting point of the heat shrink yarn contained in the second yarn,
The binding tape, wherein the second yarn includes a heat-shrinkable yarn having a heat-shrinking temperature equal to or lower than a melting point of a low-melting-point yarn included in the first yarn.   The binding tape according to claim 1, wherein the first yarn further includes a high-melting yarn having a melting point higher than that of the low-melting yarn.   The binding tape according to claim 3, wherein a linear density of the low-melting yarn, the high-melting yarn and the heat-shrinkable yarn is 20 to 300 denier. The structure of the woven fabric is a plain weave using one of the first yarn and the second yarn as a warp and the other as a weft,
The binding tape according to any one of claims 1 to 4, wherein the warp yarn and the weft yarn have a yarn density of 30 to 150 per 2.54 cm.

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