JPH10241469A - Electric wire pressing wiring tape and electric wire cable - Google Patents

Abstract

PROBLEM TO BE SOLVED: To give no damage to a wire core group in taping and adequate flexibility, and enhance peeling capability from a sheath by using a nonwoven fabric constituted with thermoplastic synthetic long fibers, attached and fixed with a and specifying a second order transition temperature and a melting point of the resin adhesive. SOLUTION: A resin adhesive having a second order transition temperature (Tg) of 50 deg.C or lower and a melting point of 180 deg.C or higher is attached to a nonwoven fabric constituted with thermoplastic synthetic resin long fibers. The attached amount of the resin adhesive is different on the inside and the outside in the thickness cross section direction of the nonwoven fabric, and is limited to 1-15wt.% based on the weight of the nonwoven fabric, and 70% or more of the total attached amount of the resin adhesive is distributed in one nonewoven fabric layer on the inside and the outside cut in the thickness cross section direction. By using a tape prepared like this, an electric cable with high wire binding work capability and high resin recovery rate in reuse of a sheath is obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric wire pressing and winding tape which is excellent in taping properties without damaging a wire core group composed of a conductive wire, and has excellent sheath peeling properties with little adhesion of fibers (fuzz) to a sheath layer. The present invention relates to an electric wire cable which is excellent in connection workability and resin recovery rate when a sheath is recycled and reused using the same.

[0002]

2. Description of the Related Art An electric wire holding tape is used to draw a continuous filament at a high speed from an air soccer or the like because of its physical properties such as strength and price, and then the filament is opened and collected on a moving net to form a web. After forming, a so-called spunbonded nonwoven fabric is manufactured, in which the nonwoven fabric is manufactured by thermocompression bonding using a pair of upper and lower embossing rolls.
Since the wire holding tape is taped to prevent disturbance of the twisted wire core group and to provide heat insulation effect and to prevent trauma when covering the sheath in the next process, the required properties are tape winding. Strength and modulus that can withstand tension and moderate elongation, moderate elasticity (flexibility) and wound tightness that do not damage the wire core group, dimensional stability that does not cause wrap cracking, and fuzzing due to friction with guides There is no need to improve the resin recovery rate when the sheath is recycled and reused due to less fuzz on the sheath.

[0003] A conventional wire holding tape is made of a polyester filament having a high melting point and a low melting point. The non-woven fabric for wire holding is obtained by thermocompression bonding with an embossing roll and then smoothing the surface with a flat roll. Alternatively, a nonwoven fabric for holding down an electric wire obtained by fixing a polyester filament by thermocompression bonding with an embossing roll and fixing with an adhesive, for example, Japanese Patent Publication No. Sho 62-520
In the 67 publication, a web made of polyester-based long fiber is passed through a pair of heating rolls composed of an embossing roll and a flat roll, and pressed in a first stage, and further pressed in a second stage through a heating roll composed of a pair of flat rolls, Next, there has been proposed a method for producing a nonwoven polyester long-fiber nonwoven fabric for holding down an electric wire cable, which comprises applying an adhesive treatment to a press contact web.

[0004]

However, in a wire holding tape made of a nonwoven fabric obtained according to the prior art, particularly, in a wire holding tape made of a nonwoven fabric without using a resin adhesive, the wire holding tape is used as a protective layer. In addition to the poor releasability from the sheath made of polyethylene or vinyl chloride resin, which is used, not only is the workability of wire cable connection inferior, but also it is difficult to recover the resin when the sheath is recycled and reused. Was.

On the other hand, an electric wire pressing and winding tape made of a nonwoven fabric using a resin adhesive, for example, Japanese Patent Publication No. Sho 62-520
In the tape and the like proposed in Japanese Patent Publication No. 67, although the sheath is excellent in peelability, since it is a hard tape in which the stretchability and flexibility of the nonwoven fabric are lost by the adhesive treatment,
There has been a problem that a core group made of a conductive wire, particularly an optical fiber cable, is damaged during taping.

The present invention has been made in view of the above-mentioned problems, and has been made to provide an electric wire pressing tape which does not damage a group of wire cores at the time of taping, has appropriate flexibility, and is excellent in peelability from a sheath. It is another object of the present invention to provide an electric cable which is excellent in connection workability and resin recovery rate of a sheath made of such a tape.

[0007]

The present invention employs the following means in order to solve the above-mentioned problems. That is, the wire pressing and winding tape of the present invention is a nonwoven fabric made of a thermoplastic synthetic long fiber and adhered and fixed with a resin adhesive, and has a secondary transition temperature (T
g) is 50 ° C. or lower and the melting point is 180 ° C. or higher.

Further, the electric wire cable according to the present invention is characterized in that the conducting wire is wound around with the electric wire holding tape, and the tape is covered with a sheath made of synthetic resin.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention has been studied diligently to determine whether it is possible to provide an unprecedented wire holding tape having both appropriate flexibility not to damage a wire core group at the time of taping and excellent peeling properties with a sheath. As a result, it has been found that the above-mentioned requirements can be achieved only by adhering and fixing a resin adhesive having specific characteristics to a nonwoven fabric made of thermoplastic synthetic long fibers. It has been found that by making a specific distribution in the direction, it is possible to provide an electric wire holding tape excellent in the above-mentioned requirements.

That is, the wire pressing and winding tape of the present invention is a resin adhesive having a property that the secondary transition temperature (Tg) is 50 ° C. or less and the melting point is 180 ° C. or more to a nonwoven fabric composed of thermoplastic synthetic long fibers. It is important that the particles are adhered and fixed.

The secondary transition temperature (Tg) in the present invention is a value measured by a specific volume method, and the melting point in the present invention is obtained from an endothermic peak temperature in a differential thermal analysis curve. When the secondary transition temperature (Tg) of the resin adhesive is 50 ° C. or more, the resin adhesive becomes hard and brittle, so that when it is adhered and fixed to the nonwoven fabric, the hand of the nonwoven fabric becomes hard. This causes a problem that the wire core group is damaged during taping. For this reason, the secondary transition temperature (Tg) of the resin adhesive is
It is more preferably 40 ° C. or lower, particularly preferably 30 ° C. or lower.

Further, the melting point of the resin adhesive is related to the sheath releasability, and in the wire / sheath coating step, the extrusion melting temperature of the synthetic resin is, for example, generally 170 to 170 when a polyvinyl chloride resin is used for the sheath. When polyethylene is used for the sheath, such as about 200 ° C. and an optical fiber cable, since the temperature is as high as about 200 to 240 ° C., the melting point of the resin adhesive needs to be 180 ° C. or more, and more preferably 200 ° C. or more. It is preferred that When the melting point is 180 ° C. or less, the resin adhesive is softened and easily melted by heat during the sheath coating step,
As a result of the effect of compatibilizing with the sheath or fixing the fibers of the nonwoven fabric being reduced, there is a problem that the sheath removability deteriorates and fibers (fuzz) adhere to the sheath. In order to increase the melting point to 180 ° C. or higher, use a resin adhesive having a self-crosslinking ability or a crosslinking agent having a self-reactive group such as N-methylol group, N-methoxymethyl group, or epoxy group. Can be preferably used.

Further, from the viewpoint of sheath peelability, the resin adhesive has a solubility parameter of at least 11 (cal / cc).
Preferably it is ^1/2 or more. Generally, the resin used for the sheath is a polyvinyl chloride resin or a polyethylene resin as described above.
4 (cal / cc) ^1/2 and 7.9 (cal / cc) ^1/2, so that the solubility parameter of the resin adhesive is at least 11 (cal / cc).
cc) By setting it to ^1/2 or more, the affinity with the sheath becomes small, the polymer becomes incompatible, and the sheath peelability is further improved.

Any resin adhesive may be used as long as it satisfies these characteristics. For example, a (meth) acrylate resin, an epoxy resin, a vinylidene chloride resin, a polyvinyl alcohol resin, or the like may be used. Can be. Particularly preferably, a polyvinyl alcohol-based resin is preferably used. Those containing or copolymerizing at least a polyvinyl alcohol resin, for example, ethylene copolymer, higher carboxylic acid vinyl copolymer, higher alkyl vinyl ether copolymer, methyl methacrylate Copolymerization and acrylamide copolymerization are preferred. When a polyvinyl alcohol resin is used, the secondary transition temperature (T
g) to 50 ° C. or less, the residual acetic acid group amount is 30 mol
It is preferable to contain l% or more or a plasticizer such as glycerin.

In order to obtain a tape having both a moderate flexibility which does not damage the core group during taping and a peeling property with the sheath, the resin adhesive has a difference in the amount of adhesion between the front and back layers in the thickness direction of the nonwoven fabric. It is highly preferred.

That is, by arranging the nonwoven fabric layer surface on which the resin adhesive is less adhered to the wire core group side of the conductor and the nonwoven fabric layer surface on the opposite side where the resin adhesive is more attached on the sheath side,
Since the core group side is taped on a surface having a feeling close to the inherent flexibility of the non-woven fabric due to little adhesion of the resin adhesive, the core group is not damaged. By contacting the surface of the nonwoven fabric layer to which the resin adhesive having the properties specified in the above is adhered, it is possible to have excellent sheath peelability.

More preferably, the amount of the resin adhesive applied is 1 to 15% by weight based on the nonwoven fabric, and 70% or more of the total amount of the resin adhesive applied is the front and back layers obtained by half-cutting the nonwoven fabric in the thickness direction. Is preferably distributed in one of the nonwoven fabric layers. If the amount of the resin adhesive applied is less than 1% by weight, there is a tendency that sufficient sheath releasability cannot be obtained. Conversely, if the amount of the applied adhesive exceeds 15%, not only is the cost disadvantageous. , The overall texture tends to be hard.
When the ratio of the resin adhesive distributed to one nonwoven fabric layer of the front and back layers obtained by half-cutting the nonwoven fabric in the thickness cross-sectional direction to the total adhesion amount is less than 70%, the resin adhesion to the nonwoven fabric layer surface on the core group side of the conductive wire is performed. As a result of the increase in the amount of the agent attached, it tends to be difficult to obtain a feeling close to the inherent flexibility of the nonwoven fabric.

It is very preferable that the resin adhesive is attached to one of the front and back nonwoven fabric layers in the thickness direction of the nonwoven fabric in one direction and not adhered to the surface of the opposite nonwoven fabric layer. In this case, since the resin adhesive is not adhered to the nonwoven fabric layer surface arranged on the core group side of the conductive wire, the flexibility of the nonwoven fabric is maintained, and the resin adhesive is generally easily damaged and adheres. The present nonwoven fabric can be applied to an optical fiber cable that could not be applied conventionally. Further, since the resin adhesive is adhered to the opposite surface, the sheath is naturally excellent in peelability.

As a method for providing a difference in the amount of adhesion between the resin adhesive and the front and back layers in the thickness cross-sectional direction of the nonwoven fabric, a method of spraying a resin adhesive composed of an emulsion or an aqueous solution only from one side, or a method of forming a resin adhesive composed of an emulsion or an aqueous solution A method of applying the adhesive from only one side using a coater roll or a doctor knife, or a method of spraying an emulsion or an aqueous solution having different concentrations on both sides can be used. In addition, in order to prevent adhesion to the reverse side, such as by spraying only from one side, the viscosity of the emulsion or aqueous solution is set high to make it difficult to penetrate into the nonwoven fabric, or a water repellent is applied to the reverse side in advance It is preferable that the emulsion and the aqueous solution do not penetrate or permeate.

The apparent density of the nonwoven fabric is 0.4 g / cm
It is preferably ³ or more. The apparent density referred to in the present invention is determined by dividing the sheet basis weight by the thickness measured using a dial gauge having a disk diameter of 10 mm and a scale of 0.01 mm. If the apparent density is less than 0.4 g / cm ³ , the tape strength per unit weight tends to decrease, and not only the tape tends to break when the tape is wound around the core group, but also the sheet A long winding tape cannot be obtained due to an increase in thickness, and the frequency of operation stoppages due to tape replacement during the tape winding process of the wire core group tends to increase, resulting in a decrease in workability. The wire pressing and winding tape of the present invention is preferably composed of polyester filaments in view of strength characteristics and heat resistance, and more preferably composed of polyester core-sheath composite fibers. As such a polyester core-sheath type conjugate fiber, those in which the core component is polyethylene terephthalate and the sheath component is a copolymerized polyester can be preferably used, and the intersections of the long fibers are adhered by thermal fusion of the copolymerized polyester. Is very preferable for obtaining a high-strength, high-modulus tape. As a method of bonding the intersections of the long fibers by hot melting, there are a method of bonding with hot air using a suction drum and a method of pressing with a pair of hot embossing rolls, and the apparent density of the tape is 0.4 g / cm. Thermocompression bonding using an embossing roll is particularly preferable in order to set the number to ³ or more.

The melting point of the copolymerized polyester is at least 20 ° C. lower than the melting point of the polyethylene terephthalate and at least 200 ° C.
And it is very preferable in obtaining a tape that can withstand high temperatures in the sheath coating step. The copolymerized polyester of the present invention is a polyester obtained by copolymerizing adipic acid, isophthalic acid, or the like, and it is needless to say that additives such as titanium oxide may be contained. Further, the core-sheath type conjugate fiber is preferably concentric in view of spinning stability in the production of nonwoven fabric, but may be eccentric, irregular cross-section, and the fiber cross-section is circular in addition to increasing the apparent density of the tape. , A flat cross section or an ellipse.

After the electric wire is wound around using the electric wire holding tape according to the present invention, the electric wire is covered with a sheath made of a synthetic resin. By arranging the conductor core group on the surface, it is possible to provide an electric wire cable excellent in cable connection workability and resin recovery rate when the sheath is recycled and reused.

[0023]

Next, the present invention will be described in detail with reference to examples, but it goes without saying that the present invention is not limited to the following embodiments.

EXAMPLE 1 Polyethylene terephthalate having a melting point of 262 ° C. was used as a core component, and isophthalic acid copolymerized polyester having a melting point of 230 ° C. was used as a sheath component. After melting at 285 ° C., a core-sheath type composite die was used. The fiber is spun so that the ratio of the core component and the sheath component is 80:20, drawn by an ejector at high speed, taken as a filament group having a fineness of 2d, and subsequently the filament group is opened and collected on a moving net. The thickness was adjusted by a pair of upper and lower calender rolls having a flat surface temperature of 190 ° C. so that the fiber density became 0.4 g / cm ³ or more under the condition of a linear pressure of 50 kg / cm. Then, after thermocompression bonding under a condition of a linear pressure of 60 kg / cm using a pair of upper and lower embossing rolls having a surface temperature of 200 ° C., a fully saponified polyvinyl alcohol resin containing glycerin (secondary transition temperature 31 ° C., 215 melting point
° C, solubility parameter 22.6 (cal./cc) ^1/2 )
Was dried by an impregnation method so as to have an adhesion amount after drying of 7.2 wt%, followed by drying to produce a nonwoven fabric having a basis weight of 55.6 g / m ² and an apparent density of 0.47 g / cm ³ . The tensile strength in the vertical direction of the obtained nonwoven fabric was 19.8 kgf / 3 cm.
This non-woven fabric was slit into a tape having a width of 3 cm, wound up into a group of wire cores made of a copper wire, and then dissolved in a polyvinyl chloride resin having a solubility parameter of 9.4 (cal./cc) ^1/2. Sheathing was performed at a temperature of 190 ° C. At this time, there was no trouble due to tape breakage and no damage to the wire core group,
In addition, when the sheath was peeled off, no fiber adhered to the sheath, and the sheath peelability was good.

Example 2 In Example 1, a completely saponified polyvinyl alcohol resin containing glycerin (secondary transition temperature 31 ° C., melting point 215 ° C., solubility parameter 2) was used as a resin adhesive.
2.6 (cal./cc) ^1/2 ) in dry weight of 5.2 wt
% Of the nonwoven fabric having a basis weight of 54.1 g / m ² and an apparent density of 0.45 g / cm ^{3 in} the same manner as in Example 1 except that only one surface of the nonwoven fabric is sprayed and dried so as to obtain a density of 0.45 g / cm ³ . Was manufactured.

In the obtained nonwoven fabric, the proportion of the total amount of the resin adhesive occupied by the spray sprayed surface layer when cut in half in the thickness direction is 76%, and the tensile strength of the nonwoven fabric in the vertical direction is 18.1 kgf. / 3 cm2. 3
After slitting into a tape having a width of cm and winding up the surface with little resin adhesive to a core group made of copper wire, the solubility parameter of the nonwoven fabric on the side with much resin adhesive is 9. Sheathing was performed at a temperature of about 190 ° C. using 4 (cal./cc) ^1/2 vinyl chloride resin. At this time, there was no trouble due to tape breakage and no damage to the wire core group,
In addition, when the sheath was peeled off, no fiber adhered to the sheath, and the sheath peelability was good.

Example 3 In Example 1, a completely saponified polyvinyl alcohol resin containing glycerin (secondary transition temperature 31 ° C., melting point 215 ° C., solubility parameter 2) was used as a resin adhesive.
Solutions A and B (A with two concentrations of 2.6 (cal./cc) ^1/2
Is four times higher than B), and the solution A is sprayed on one side of the nonwoven fabric and the solution B is sprayed on the other side using a spray.
Except for drying, a nonwoven fabric having a resin adhesion amount of 6.0 wt%, a basis weight of 54.1 g / m ² and an apparent density of 0.45 g / cm ³ was produced in the same manner as in Example 1. The ratio of the solution A in the spray-sprayed layer when the nonwoven fabric obtained was cut in half in the thickness direction of the total amount of the resin adhesive was 81%.
%, And the tensile strength of the nonwoven fabric in the vertical direction is 17.9 kg.
f / 3cm. This non-woven fabric is slit into a tape having a width of 3 cm, and the surface on which the resin adhesive is less adhered is wound up into a group of cores made of copper wire. Is 9.4 (cal./cc
A sheath process was performed at a temperature of about 190 ° C. using ^1/2 vinyl chloride resin. At this time, there was no trouble due to tape breakage and no damage to the wire core group, and no adhesion of fibers to the sheath was observed when the sheath was peeled off.

Example 4 In Example 1, after thermocompression bonding of the embossing roll, a methylhydrogenpolysiloxane-based water-repellent was sprayed on one surface of the nonwoven fabric, and then completely coated with glycerin as a resin adhesive. Saponified polyvinyl alcohol resin (secondary transition temperature 31 ° C., melting point 215 ° C., solubility parameter 22.6 (cal./cc) ^1/2 , water-repellent so that the adhesion amount after drying becomes 5.3 wt%. The same procedure as in Example 1 was carried out except for spraying and drying with a spray from the opposite side to which the agent was applied, and a basis weight of 54.0 g / m ² and an apparent density of 0.4.
A 5 g / cm ³ nonwoven fabric was produced.

In the obtained nonwoven fabric, the resin adhesive did not adhere to the surface to which the water repellent was applied, and the adhesive adhered to only one surface. The tensile strength of the nonwoven fabric in the vertical direction is 18.5kgf / 3c
m.

This non-woven fabric is slit into a tape having a width of 3 cm, and the surface on which the resin adhesive is not adhered is wound up to a wire core group made of copper wire. solubility parameter in the 9.4 (cal./cc) ^1/2
The sheath processing was performed at a temperature of about 190 ° C. using the vinyl chloride resin. At this time, there was no trouble due to tape breakage and no damage to the wire core group, and no adhesion of fibers to the sheath was observed when the sheath was peeled off.

Example 5 In Example 4, the non-woven fabric used in Example 4 was used, and the non-woven fabric was slit into a tape having a width of 3 cm, and the surface on which the resin adhesive was not adhered was rolled up into a group of optical fibers. After that, the nonwoven fabric was sheathed at a temperature of about 220 ° C. using polyethylene having a solubility parameter of 7.9 (cal./cc) ^{1/2 on} the side of the nonwoven fabric on which the resin adhesive was largely adhered. At this time, there was no trouble due to tape breakage and no damage to the wire core group, and no adhesion of fibers to the sheath was observed when the sheath was peeled off.

Example 6 In Example 1, a self-crosslinkable polyacrylate-vinylidene chloride copolymer resin emulsion (secondary transition temperature: 17 ° C., melting point: 206 ° C., solubility parameter: 11.6 (cal./ cc) The amount of adhesion was determined by using ^1/2 .
A nonwoven fabric having a basis weight of 55.5 g / m ² and an apparent density of 0.46 g / cm ³ was produced in the same manner as in Example 1 except that the content was 8 wt%.

The tensile strength of the obtained nonwoven fabric in the vertical direction is as follows:
It was 18.7 kgf / 3 cm. After slitting this non-woven fabric into a tape having a width of 3 cm and winding it up to a core group made of copper wire, the solubility parameter was 9.4 (cal./cc).
Sheath processing was performed at a temperature of about 190 ° C. using ^1/2 vinyl chloride resin. At this time, there was no trouble due to tape breakage and no damage to the wire core group, and no adhesion of fibers to the sheath was observed when the sheath was peeled off.

Comparative Examples 1-2 In Example 1, a completely saponified polyvinyl alcohol resin (secondary transition temperature 70 ° C., melting point 230 ° C., solubility parameter 23.4 (cal./cc) ^1/2 ) was used as the resin adhesive. hand,
By the same method as in Example 1 except that the adhesion amount was 8.2 wt%, the apparent density was 0.48 g / m ² with a basis weight of 56.5 g / m ^2.
A non-woven fabric of cm ³ was produced.

The tensile strength of the obtained nonwoven fabric in the vertical direction is as follows:
It was 19.9 kgf / 3 cm. This nonwoven fabric was slit into a tape having a width of 3 cm, and (1) after winding up into a core group made of copper wire, the solubility parameter was 9.4 (cal./c).
c) A sheath process is performed at a temperature of about 190 ° C. using ^1/2 vinyl chloride resin. (2) After winding up into a group of optical fibers, the solubility parameter is 7.
About 220 ° C using 9 (cal./cc) ^1/2 polyethylene
At a temperature of. At this time, the trouble due to the tape breakage and the sheath peelability were good,
The occurrence of damage to the core group consisting of the copper wire and the optical fiber was observed. In particular, the optical fiber was markedly damaged at the edge of the tape and was unusable.

Comparative Example 3 In Example 1, an ethylene-vinyl acetate copolymer resin emulsion (secondary transition temperature 5 ° C., melting point 98
° C., using a solubility parameter ^{9.5 (cal./cc) 1/2)} , in the same manner as in Example 1 except that the coating weight and 7.8 wt%, observed in basis weight 55.9 g / m ² Hanging density is 0.4
A 6 g / cm ³ nonwoven fabric was produced.

The tensile strength of the obtained nonwoven fabric in the vertical direction is as follows:
It was 17.1 kgf / 3 cm. After slitting this non-woven fabric into a tape having a width of 3 cm and winding it up to a core group made of copper wire, the solubility parameter was 9.4 (cal./cc).
Sheath processing was performed at a temperature of about 190 ° C. using ^1/2 vinyl chloride resin. At this time, there was no problem about the trouble due to the tape breakage and the damage to the wire core group, but when the sheath was peeled off, the adhesion of the fiber or the resin adhesive to the sheath was remarkable and the sheath peelability was poor. .

Comparative Example 4 A nonwoven fabric having a basis weight of 50.2 g / m ² and an apparent density of 0.45 g / cm ³ was prepared in the same manner as in Example 1 except that no resin adhesive was used. Manufactured. The tensile strength in the vertical direction of the obtained nonwoven fabric was 16.3 kgf / 3cm. This non-woven fabric is slit into a 3 cm wide tape,
(1) After winding up to a wire core group consisting of copper wire, sheath processing is performed at a temperature of about 190 ° C using a vinyl chloride resin having a solubility parameter of 9.4 (cal./cc) ^1/2. (2) After winding up the optical fiber into a core group, the solubility parameter is 7.9 (cal./cc).
^Sheathing was performed at about 220 ° C. using ^1/2 polyethylene.

At this time, no trouble due to the breakage of the tape and no damage to the wire core group were observed, however, when the sheath was peeled off, fibers adhered to the sheath and the sheath peelability was poor. In particular, fibers adhered remarkably to the sheath made of polyethylene, and the sheath peelability was extremely poor.

[0040]

According to the present invention, there is provided an electric wire pressing and winding tape which has excellent taping properties without damaging a wire core group made of a conductive wire and excellent sheath peeling properties with little adhesion of fibers (fuzz) to a sheath layer. By using the tape, it is possible to provide an electric wire cable excellent in connection workability and resin recovery rate when the sheath is recycled and reused.

Claims (14)

[Claims] 1. A non-woven fabric comprising a thermoplastic synthetic long fiber to which a resin adhesive is adhered and fixed, wherein the resin adhesive has a secondary transition temperature (Tg) of 50 ° C. or less and a melting point of 180 ° C.
A wire holding tape wound at a temperature of at least ℃. 2. The wire pressing tape according to claim 1, wherein the resin adhesive has a difference in the amount of adhesion between the front and back layers in the thickness cross-sectional direction of the nonwoven fabric. 3. The amount of the resin adhesive applied to the nonwoven fabric is 1 to 15% by weight, and the total amount of the resin adhesive is 70% by weight.
3. The wire holding tape according to claim 2, wherein at least% is distributed in one of the front and back nonwoven fabric layers obtained by half-cutting the nonwoven fabric in the thickness cross-sectional direction. 4. The resin adhesive is attached to one of the front and back nonwoven fabric layers in the thickness direction of the nonwoven fabric and is not attached to the surface of the other nonwoven fabric layer. An electric wire holding tape according to any one of claims 2 to 3. 5. The wire holding tape according to claim 1, wherein the solubility parameter of the resin adhesive is at least 11 (cal / cc) ^1/2 or more. 6. The wire holding tape according to claim 1, wherein the resin adhesive contains at least a polyvinyl alcohol resin or is copolymerized. 7. The wire holding tape according to claim 1, wherein the apparent density of the nonwoven fabric is 0.4 g / cm ³ or more. 8. The wire holding tape according to claim 1, wherein the thermoplastic synthetic long fiber is polyester. 9. The wire holding tape according to claim 8, wherein the thermoplastic synthetic long fiber is a core-sheath type composite fiber, the core component is polyethylene terephthalate, and the sheath component is a copolymerized polyester. 10. The wire holding tape according to claim 9, wherein the non-woven fabric has a fiber intersection bonded thereto by thermal melting of the copolymerized polyester. 11. The copolymer polyester having a melting point of 200
The wire holding tape according to any one of claims 9 to 10, which has a temperature of at least 20C and a temperature of at least 20C lower than the melting point of the polyethylene terephthalate. 12. An electric wire cable, wherein a conductor is wound with the electric wire holding tape according to any one of claims 1 to 11, and the tape is covered with a sheath made of synthetic resin. . 13. The non-woven fabric according to claim 2, wherein a wire is disposed on the non-woven fabric layer surface having a small amount of the resin adhesive, and the other non-woven fabric has a large amount of the resin adhesive. The sheath is arranged on the layer surface.
The described electric cable. 14. The electric cable according to claim 12, wherein said electric cable is an optical fiber cable.