JP2002054041A - Fused yarn of high-tenacity fiber - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a high-tenacity filament yarn excellent in abrasion resistance, weather resistance, durability, water resistance, etc., producible by fusion not by a conventional knitting and braiding and twisting. SOLUTION: This fused yarn of a high-tenacity fiber is constituted by integrating a high-tenacity yarn such as plural yarns of at least one or more kinds of filament yarns of multifilament yarns, monofilament yarns or monomultifilament yarns of polyolefin-based filaments, glass filaments, etc., with a low-temperature thermally bondable resin having a melting point lower than those of the filament yarns.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a high-strength fiber yarn composed of a plurality of high-strength fiber filament yarns, in particular, a conventional braid (braid) for binding or joining filament yarns together.
The present invention relates to a high-strength fiber fused yarn integrated by fusion regardless of a method or a twisting method.

[0002]

2. Description of the Related Art In recent years, high-strength fibers such as aramid fibers and ultrahigh-molecular-weight polyethylene fibers have been widely used as thin, high-strength linear product fibers such as ropes, strings and fishing lines. However, filament yarns or twisted yarns made of these high-strength fibers often have low abrasion resistance, and in applications where they are subjected to frequent friction and in situations where they are used frequently, they are rapidly worn, frayed, or fibrillated. And other problems. In addition, light resistance to ultraviolet rays and the like, weather resistance are often inferior in durability, and furthermore, water absorption is large, and tensile strength is reduced by water absorption, so that water resistance is low, and for example, fisheries such as fishing line or fishing net are often used. There was a problem with its use as a material. Some of these high-strength fibers break at low applied loads, and such fibers are difficult to use in applications requiring high breaking loads such as ropes and fishing lines (tegus). There was also a disadvantage.

[0003] In view of such problems, a yarn formed by knitting or braiding a filament yarn of a high-strength fiber such as ultra-high-molecular-weight polyethylene has been known as one developed especially for the purpose of improving abrasion resistance. However, a special machine is required for the production of the braided or knitted yarn, and the production process is very complicated. Conventionally, a polyolefin fused yarn obtained by fusing a plurality of polyolefin fiber mono-multifilament yarns, for the purpose of improving the breaking load in particular, focusing on, for example, the melt adhesion of the polyolefin fiber at a melting point range temperature, is known. (Japanese Patent Laid-Open No. 9-98698). However, this polyolefin yarn relies on self-adhesion utilizing the melt adhesion of the fiber itself, and thus has poor or poor adhesion, probably because it is based only on the superficial adhesion only at the contact interface between filament yarns. Adhesion is generally difficult due to the need for complicated technical operations (manipulation) to enhance the properties, and it is often necessary to further use conventional braiding or twisting after adhesion, leaving a problem to be solved.

[0004]

SUMMARY OF THE INVENTION The present invention is therefore excellent in abrasion resistance, durability, weather resistance and water resistance, has a moderate hardness and smoothness with less unevenness, and has a manufacturing method, that is, a method of forming filament filaments. It is an object of the present invention to provide a high-strength fiber fusion yarn which is easy to bind or bond and has good adhesiveness. In other words, conventional braiding and twisting methods are not necessarily required from a plurality of high-strength fiber filament yarns, and the filament fibers do not rely on self-fusing properties, which are difficult to adhere. It is an object of the present invention to provide a fused yarn constituted by a method of fusing. It is another object of the present invention to provide a high-strength fiber fusion yarn particularly suitable for fishing line, gut, rope and the like.

[0005]

A solution of the present invention, which is adapted to the above object, is a multifilament yarn of high-strength fiber,
A monofilament yarn or a mono-multifilament yarn, which is composed of a plurality of at least one or more filament yarns, and a low-temperature heat-adhesive resin having a melting point lower than the melting point of the filament yarn are integrally formed by fusion. High-strength fiber fusion yarn. More specifically,
A multifilament yarn of a high-strength fiber, a monofilament yarn or a monomultifilament yarn, a low-temperature heat having a melting point lower than that of the filament yarn interposed between the yarns, the yarn comprising a plurality of at least one filament yarn. It is a high-strength fiber fused yarn that is fused and integrated with an adhesive resin. It is preferable that the low-temperature heat-adhesive resin is a yarn made of a polyolefin copolymer, a polyester copolymer or a nylon copolymer, and its melting point is preferably in the range of about 50 to 200 ° C., and more preferably about 50 to 200 ° C. It is in the range of about 60 to 135 ° C. Particularly preferred is a polyolefin-based copolymer resin having a melting point of about 100 ° C., which can be a liquid having a large flowability and a low viscosity when heated. The high-strength synthetic fibers or inorganic fibers are, for example, polyolefin-based fibers such as ultrahigh-molecular-weight polyethylene, aromatic polyamide-based (aramid) fibers, heterocyclic high-performance fibers, wholly aromatic polyester-based fibers, glass fibers, carbon fibers, and metals. Fibers and the like are preferable, and among them, polyolefin fibers such as ultrahigh molecular weight polyethylene and glass fibers are preferable. The composition ratio of the filament yarn and the low-temperature heat-adhesive resin is preferably 1: 1 to 1: 0.01 on a weight basis. The low-temperature heat-adhesive resin is preferably in the form of a fiber thread. Preferable applications of the high-strength fused yarn include fishing lines for various leisure activities and fisheries, other fishery materials, ropes, gut and the like.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Multifilament, monofilament or monomultifilament according to the present invention (hereinafter sometimes collectively referred to as "filament yarn")
It is preferable to use a high-strength fiber. Here, the mono-multifilament usually refers to a filament yarn obtained by binding a plurality of the monofilament yarns. Examples of the high-strength fibers include polyolefin fibers such as ultrahigh molecular weight polyethylene, aromatic polyamide fibers, heterocyclic high-performance fibers, wholly aromatic polyester fibers, glass fibers, carbon fibers, and metal fibers.

[0007] One of the preferable fibers among the high-strength fibers used in the present invention is a fiber composed of polyolefins such as polyethylene and polypropylene, and preferably an ultrahigh molecular weight polyethylene fiber. Ultra-high molecular weight polyethylene has a molecular weight of 500,000 or more, preferably 1,000,000 or more, and has 3 carbon atoms in addition to a homopolymer.
About 10 lower α-olefins such as propylene,
It also includes copolymers with butene, pentene, hexene and the like. In the case of a copolymer of ethylene and an α-olefin, the ratio of the latter is an average of 0.1 to 1000 per carbon number.
A copolymer having about 20 copolymers, preferably about 0.5 to 10 on average, is preferable, and exhibits excellent mechanical properties such as high strength.

Methods for producing ultra-high molecular weight polyethylene are described in, for example, JP-A-55-5228 and JP-A-55-10750.
6 and the like, and these methods known per se may be used. Specifically, for example, first, ethylene in the presence of a catalyst such as a transition metal element compound and an alkali metal, a metal hydrogen compound such as an alkaline earth metal or an organometallic compound,
Ultrahigh molecular weight polyethylene is obtained by slurry polymerization in an organic solvent. The obtained ultrahigh molecular weight ethylene polymer is mixed with a diluent, or mixed with wax at room temperature, melt-extruded, and then drawn (for example, at a magnification of about 5 to 80 times) to obtain a fiber. Is done.

The aramid fiber used in the present invention is preferably an aromatic polyamide-based fiber obtained by introducing an aromatic ring into an aliphatic polyamide-based fiber such as nylon, which has conventionally been a fiber having a high tensile strength. As the aramid fiber, for example, a formula;

Embedded image (N represents an integer of 1 or more), such as polyparaphenylene terephthalamide. The aramid fiber can be produced by a known method or a method analogous thereto. For example,
The polymer represented by the above formula or the like may be chemically synthesized and spun by liquid crystal spinning, or may be spun by dry and wet spinning and then superdrawn.

As the high-strength fiber used in the present invention, a heterocyclic high-performance fiber obtained by improving the amide bond portion of the aramid fiber in order to increase the elastic modulus of the aramid fiber may be used. As a heterocyclic high-performance fiber, for example,
formula;

Embedded image (N represents an integer of 1 or more) poly-p-phenylenebenzobisthiazole (PBZT) or a formula;

Embedded image (N represents an integer of 1 or more), such as poly-p-phenylenebenzobisoxazole (PBO). The heterocyclic high-performance fiber can be produced by a known method or a method analogous thereto. For example, a polymer represented by the above formula or the like can be chemically synthesized, dissolved in an appropriate solvent, spun by, for example, dry spinning, and drawn to obtain a fiber. As the solvent, a known solvent appropriately used in the art depending on the type of the polymer may be used.For example, an anisotropic solution such as methylsulfonic acid, an isotropic solution such as dimethylacetamide-LiCl, phenol, or Polyamic acid and the like.

As the high-strength fiber used in the present invention, a wholly aromatic polyester fiber in which a methylene group of polyethylene terephthalate (PET) is replaced by an aromatic group may be used. As a wholly aromatic polyester fiber, for example, a formula:

Embedded image (N represents an integer of 1 or more), a self-condensed polyester of p-hydroxybenzoic acid represented by the formula:

Embedded image (N represents an integer of 1 or more.) A polyester comprising terephthalic acid and hydroquinone, or a formula;

Embedded image (Where X or Y represents an integer of 1 or more, and n is X and Y
Represents the sum of P) -hydroxybenzoic acid and 6
And polyesters composed of -hydroxy-2-naphthoic acid. The polyester represented by the chemical formula 6 can change the performance of the fiber by changing the ratio of X and Y. The wholly aromatic polyester fiber can be produced by a known method or a method analogous thereto. For example, it can be produced by chemically synthesizing a polymer represented by the above formula or the like, dissolving the polymer in an appropriate solvent, and spinning, for example, by solution liquid crystal spinning.

Further, as preferred high-strength fibers used in the present invention, glass fibers which are inorganic fibers can be mentioned. Glass fibers include so-called E, which has excellent electrical and mechanical properties.
Glass, C glass having excellent chemical resistance, ECR glass using a titanium and zinc-based flux while reducing the alkali content of C glass, and further include A glass, L glass, S glass, and YM31-A glass. Among them, preferred glass fibers for use in the present invention are free of boron oxide and fluorine, the formula _{1: SiO 2 -TiO 2 -Al 2} O
_3- RO (R is a divalent metal such as Ca and Mg) or Formula 2:
This is a glass having a composition represented by SiO ₂ —Al ₂ O ₃ —RO (R is as defined above). Particularly preferred are glass fibers in which R in Formula 2 is Ca and Mg, especially those containing no fluorine, sulfate or Ti and having a Delta T value of at least about 52 ° C, especially about 66 ° C or more.
Particularly, as a high-performance glass fiber, about 59 to 62% by weight of SiO ₂ containing no B (boron) and about 20 to 24% by weight.
Wt% of CaO, of about 12 to 15 wt% Al ₂
O _3, MgO of about 1-4 wt%, _{F 2} up to about 0.5 wt%, _Na 2 O of about 0.1 to 2 wt%, TiO ₂ up to about 0.9 wt% , about 0.5 wt% of up to _Fe 2 _{O 3,} glass fiber is preferably composed of SO ₃ to _{K 2} O and about 0.5 wt% to about 2 wt%, inter alia about 1149 ° C. ~ Glass fiber compositions having a viscosity at a forming temperature of 1371 ° C. of about 1000 poise and (2) a liquidus temperature above about 38 ° C. and below the forming temperature are more preferred for high performance. Other WO96 / 3936
The glass fibers described in 2A are advantageously used.

Still other high-strength fibers include carbon fibers that are inorganic fibers, such as polyacrylonitrile-based carbon fibers, pitch-based carbon fibers, rayon-based carbon fibers, and the like. Among them, polyacrylonitrile-based carbon fibers having high tensile strength are preferred. This is because the acrylic fiber is heat-treated in the air to make it a flame-resistant fiber, and then about 1000 in an inert gas.
It is manufactured by firing at about 1800 ° C. Other examples include metal fibers such as alloy soft wires, copper wires, stainless steel wires, and tungsten wires. Further, as the high-strength inorganic fibers, silicon carbide fibers, boron fibers, and the like may be used.

The filament yarn is preferably a monofilament having a fineness of about 10 to 3000 d. In the case of a mono-multifilament, it is preferable that a plurality of, preferably about 3 to 50 monofilaments are plied. In the case of a multifilament, it is preferable that a plurality of the monofilaments, preferably about 10 to 600 filaments are combined.

The filament yarn preferably has the following physical properties. That is, the tensile strength is 20 g
/ D or more, preferably 25 g / d or more, more preferably 30 g / d or more. The upper limit is preferably about 45 g / d. The elastic modulus is 500 g / d or more, preferably 800 g / d or more and 2000 g / d or less. Here, the tensile strength is, for example, JIS L 10
13 A tensile tester, for example, a Strograph R tensile tester manufactured by Toyo Seiki Seisakusho Co., Ltd., can be easily measured by a method according to "Chemical Filament Yarn Test Method". In addition, the elastic modulus can be easily measured by, for example, a Strograph R tensile tester manufactured by Toyo Seiki Seisaku-Sho, Ltd. by a method according to JIS L 1013 “Testing method for chemical filament yarn”.

In the present invention, a plurality of filaments (preferably about 3 to 6) are used to form a yarn (hereinafter referred to as "filament").
(Sometimes referred to as "filament yarn").
At this time, the yarn may be composed of a single fiber, or may be composed of two or more fibers. Further, the yarn may include a filament yarn made of a fiber other than the high-strength fiber. The content of such a filament yarn is 1 to the filament yarn composed of high-strength fiber.
/ 2 or less, preferably 1/3 or less, more preferably 1
/ 4 or less. In the present invention, specific examples of the filament yarn composed of a fiber other than the high-strength fiber include a fiber used for adjusting the specific gravity of the fused yarn according to the present invention. Such fibers include fluorine fibers for increasing the specific gravity. In addition, it can be used even if it is not made of a fiber such as a metal wire.

The fluorine fiber is usually a fiber made from a resin containing a fluorine atom in a molecule, and is, for example, a copolymer of polytetrafluoroethylene (PTFE), tetrafluoroethylene and perfluoroalkyl vinyl ether. (PFA), a copolymer of tetrafluoroethylene and hexafluoropropylene (FEP), a copolymer of ethylene and tetrafluoroethylene (ETFE),
Polychlorotrifluoroethylene (PCTFE), trichloroethylene (PCTFE), polyvinyl denfluoride (PVDF), polyvinyl fluoride (PVF)
And the like. Among them, especially high specific gravity,
Polytetrafluoroethylene (P
TFE) fibers are particularly preferred.

Examples of the metal wire include a copper wire, a stainless wire, a lead wire, a tongue wire, a soft wire of various alloys and an amorphous wire, and are combined with each other to obtain a fused yarn having a desired specific gravity. be able to.

In the present invention, fibers having high elongation properties can be used as filament yarns composed of fibers other than high-strength fibers. When a fiber having high elongation physical properties is interposed, when a load is applied, the fiber acts as a protective material for the high-strength fiber, and there is an advantage that the occurrence of fibrillation is reduced and a decrease in strength can be prevented. . As the fiber having such high elongation properties, a known fiber may be used. Examples thereof include nylon, polyester, and polyolefin resin, and a monofilament yarn composed of such fibers or a mono-multifilament obtained by plying a plurality of monofilament yarns is used. Yarn can be used.

The low-temperature heat-adhesive resin, which is another important component for fusing the plurality of filament yarns to each other, needs to have a melting point lower than the melting point of the fibers constituting the filament yarns. . Specifically, about 50-
Resins having a melting point of around 100 ° C., preferably in the range of 200 ° C., preferably in the range of about 60-135 ° C., are particularly preferred. The melting point can be easily measured by, for example, “DSC7” manufactured by Perkin Elmer, by a method according to JIS L 1013 “Testing method for chemical filament yarn”. As the low-temperature heat-adhesive resin, a known resin may be used as long as it has the above melting point. Specifically, for example, a polyolefin copolymer, a polyester copolymer or a polyamide copolymer may be used. it can. Above all, a soft resin which can be softened by heating from a low temperature of about 50 ° C. to a short time of about 10 seconds from a polyolefin-based resin, for example, a polyolefin copolymer mainly composed of polyethylene, polypropylene or the like, is preferable. In particular, those with a melting point of around 100 ° C and low viscosity at the time of melting are excellent, and can be easily fluidized by heating for a short time and can quickly diffuse and penetrate not only to the fiber surface but also to the center. It can perform an adhesive function. The low-temperature heat-adhesive polyester copolymer is also excellent because it exhibits excellent low-temperature heat adhesion to many types of high-strength fibers. Furthermore, a low-temperature heat-adhesive polyamide copolymer resin can also be used as appropriate.

A method known per se may be used as a method for integrally forming the yarn comprising a plurality of the filament yarns and the low-temperature heat-adhesive resin. For example, a filament yarn is impregnated with a resin by a known method such as dipping in a low-temperature heat-adhesive resin filled in a bath, or a resin is applied by a known method, and the fermentation yarn is aligned and heated. Thus, the fused yarn according to the present invention may be manufactured. In addition, using a low-temperature heat-adhesive resin as a yarn, all the high-strength fiber filament yarns are arranged so as to be in contact with the yarn made of the low-temperature heat-adhesive resin, and if necessary, twisting is performed. The fused yarn according to the present invention may be produced by knitting or knitting and then applying heat, and the method is suitably used in the present invention.

As the low-temperature heat-adhesive resin serving as the yarn, a yarn may be formed from the low-temperature adhesive resin, or may be a yarn obtained by coating the central yarn with the low-temperature adhesive resin. Hereinafter, these are collectively referred to as “low-temperature adhesive resin filament yarn”. In the latter case, the above high-strength fiber is suitably used as the center yarn. It is also preferable to use a metal wire. In addition, synthetic fibers such as nylon may be used. It is preferable to use a center yarn having a thickness of 10 to 50 μm. The coating method is not particularly limited, and a method known per se may be used. For example, the coating can be performed by impregnating the center yarn into a bath containing a low-temperature adhesive resin, binding excess, and drying. Low temperature adhesive resin filament yarn manufactured by coating,
Those having a thickness of about 1.3 to 3 times the center yarn are preferred.

More specifically, the high-strength fiber-fused yarn according to the present invention uses a plurality of, for example, about 3 to 6 combinations of one or more of the above-described filament yarns, and inserts the combination in the middle of the yarns. A plurality of, for example, 1 to 5 low-temperature heat-adhesive resin filament yarns smaller than the number are arranged so as to be in contact with all the filament yarns, and further twisted or knitted as desired. Then, while heating at a relatively low temperature as described above, for example, the filament yarn is stretched by about 10 to 40% to diffuse and infiltrate the heat-adhesive resin in a molten state to the center, and integrally fused. It is preferable to manufacture it.

The method for producing a fused yarn according to the present invention will be described in more detail.
The filament yarn and the low-temperature heat-adhesive resin filament yarn are aligned parallel to the longitudinal direction so as to surround the low-temperature heat-adhesive resin filament yarn, for example, and the twist is applied to the filament yarn if desired. Or
While knitting, keeping the state, it is continuously transferred by a roller, charged in a heating furnace, and stretched so as to have a stretch ratio of about 20 to 80%, preferably about 30 to 50%. After being melted and bonded by exposing it to a temperature of not less than the melting point of the low-temperature heat-adhesive resin and not more than the melting point of the filament yarn, preferably at a temperature of about 50 ° C to 200 ° C, more preferably about 60 to 130 ° C. Rolled out,
After cooling, an integrated fused yarn is obtained. Here, by stretching, the adhesion between the filament yarn and the low-temperature heat-adhesive resin filament yarn can be improved, and the loss of strength of the manufactured fused yarn can be prevented.

The stretching operation can be performed in one stage or in two or more stages. Among them, multi-stage stretching of two or more stages is preferred. The multi-stage stretching of two or more stages can be performed using a method known per se.For example, in the case of two-stage stretching, in the first stage, the extruded product is formed at a relatively low temperature of about 60 to 90 ° C. The stretching operation is performed while extracting the diluent, and in the second and subsequent stages, the stretching operation of the molded body is continued at a temperature of about 80 to 120 ° C. and higher than the first-stage stretching temperature. Is preferred.

The weight ratio of the high-strength fiber filament yarn to the low-temperature heat-adhesive resin is preferably 1: 1 to 1: 0.01. This is because, while obtaining a sufficient adhesive strength, the low-temperature heat-adhesive resin does not protrude from the fiber surface to cause unevenness and lose the smoothness.

The fused yarn according to the present invention may be colored.
The coloring method may be a known method, but is applied by passing the fused yarn of the present invention through a bath containing the colorant solution at room temperature, for example, at a temperature in the range of about 20 to about 25 ° C. can do. However, if desired,
Higher temperatures can be used, but are usually below the melting point of the filament yarn. Thereafter, the coated yarn is dried, and the coated yarn is passed through a furnace maintained at a certain temperature in the range of about 100 to about 130 ° C. and passed therethrough to produce a colored fused yarn. As the coloring agent, inorganic pigments, organic pigments, or organic dyes are known, and preferred are titanium oxide, cadmium compounds, carbon black, azo compounds, cyanine dyes,
Or a polycyclic pigment is exemplified.

The low-temperature adhesive resin may contain various known stabilizers, plasticizers, lubricants or the like, or two or more of them, as long as the object of the invention is not impaired. Further, a magnetic material, a conductive substance, a substance having a high dielectric constant, or the like may be blended. Specific examples include calcium carbonate, barium carbonate, magnesium carbonate, clay, talc, mica, feldspar, bentonite, aluminum oxide, magnesium oxide, titanium dioxide, silica, gypsum and the like. These may be coated with, for example, stearic acid or acrylic acid.

The high-strength fiber-fused yarn of the present invention is coated with an adhesive resin so as to penetrate from the outer periphery to the inside of the high-strength fiber filament, and the adhesive resin is present so as to fill voids between the filaments. Since it has excellent properties and is tightly bound and there is no fear of falling apart, it can be used as it is as a product for various uses. However, it is also possible to use with a light twist if necessary.

The high-strength fiber fused yarn of the present invention may be further coated with a resin. By coating with a resin, there is an advantage that unevenness on the surface is further reduced and a smooth yarn can be formed. As the resin used for coating, acrylic, urethane, nylon, polyester, epoxy, vinyl acetate,
Synthetic resins such as ethylene-vinyl acetate and the like,
Emulsion type or solvent type may be used. Furthermore, synthetic rubbers such as natural rubber and SBR can also be used. As the coating method, a method known per se may be used, and examples thereof include melt extrusion coating.

In a preferred embodiment of the high-strength fiber fused yarn of the present invention, the strength retention is 70% or more, preferably 80%.
This is the case. Here, the strength retention is a value indicating how much the pseudo-monofilament coated with the synthetic resin maintains the tensile strength of the high-strength fiber before coating. That is,
The strength retention is expressed by the following equation. Strength retention (%) = {(tensile strength of pseudo-monofilament) / (tensile strength of high-strength fiber before coating)} ×
100 Here, the tensile strength is, for example, JIS L 1013
It can be easily measured with a tensile tester, for example, a Strograph R tensile tester manufactured by Toyo Seiki Seisaku-Sho, Ltd., according to the method of "Testing method for chemical filament yarn".

The fused yarn according to the present invention may be used for any purpose as long as it is required to have abrasion resistance, durability, weather resistance or water resistance. And fishery fishing line, fishery materials such as tuna fishing line, rope, gut, kite string, "weed removal (we
Eater) "thread or surgical suture.

[0033]

EXAMPLES Examples of the present invention will be described below, but it goes without saying that the present invention is not limited to these examples. Further, the tensile strength in the examples was measured by a method according to JIS L 1013 “Testing method for chemical filament yarn” using a Strograph R tensile tester manufactured by Toyo Seiki Seisaku-sho, Ltd.

Example 1 Dyneema 1 as side yarn
Using four 50d / 140F (manufactured by Toyobo Co., Ltd.)
Using one Thermolux PO105 300d (manufactured by Luxilon) as a core yarn, these were tied with a knitting machine to produce a braid. Feeding roller 10
It is fed into a heating furnace heated to 140 ° C. at a speed of 0 m / min, and taken up at a speed of a take-up roller of 120 m / min.
A high-strength fiber fused yarn 1 according to the present invention was manufactured. The tensile strength of the high-strength fiber fused yarn 1 was 16.2 kg.

[Comparative Example] Dyneema 150d / 14
4F (manufactured by Toyobo Co., Ltd.) is tied with a knitting machine,
Braids were manufactured. The tensile strength of the braid is 1
The weight was 4.4 kg.

Example 2 Dyneema 1 as side yarn
Instead of 50d / 140F (Toyobo Co., Ltd.),
Xylon 250d / 166F (Toyobo Co., Ltd.)
A high-strength fiber-fused yarn 2 according to the present invention was produced in exactly the same manner as in Example 1 except for using.

Example 3 Dyneema 1 as side yarn
Instead of 50d / 140F (Toyobo Co., Ltd.),
Except that Vectran T-101 (250d / 50F manufactured by Kuraray Co., Ltd.) was used, the procedure was the same as in Example 1,
A high-strength fiber fusion yarn 3 according to the present invention was produced.

[0038]

The high-strength fiber fused yarn of the present invention has a tensile strength,
Both abrasion resistance and durability are greatly improved as compared to self-adhesive fused yarns of filament yarns. Further, since the adhesive resin has an effect of diffusing and penetrating from the fiber yarn surface to the inside thereof to solidify the fiber, no fuzz is generated. It has excellent features such as excellent water resistance, breaking strength under applied load, and prevention of yarn breakage.

Claims (7)

[Claims] 1. A high-strength multifilament yarn, a monofilament yarn or a monomultifilament yarn comprising at least one kind of a plurality of filament yarns, and a low temperature having a melting point lower than the melting point of the filament yarn. High-strength fiber-fused yarn composed integrally with a heat-adhesive resin. 2. A multi-filament yarn, a mono-filament yarn or a mono-multi-filament yarn of a high-strength fiber, wherein a yarn comprising a plurality of filament yarns of at least one kind is more than a filament yarn interposed between the yarns. A high-strength fiber fusion yarn that is fused and integrated with a low-melting low-temperature heat-adhesive resin. 3. The high-strength fiber constituting the filament yarn is a polyolefin fiber or a glass fiber.
Or a high-strength fiber fusion yarn according to item 2. 4. The high-strength fiber fusion yarn according to claim 1, wherein the low-temperature heat-adhesive resin is a yarn made of a polyolefin copolymer, a polyester copolymer or a polyamide copolymer. . 5. The low-temperature heat-adhesive resin has a melting point of 50 to 200.
The high-strength fiber-fused yarn according to any one of claims 1 to 4, which is in a range of ° C. 6. The high-strength fiber fused yarn according to claim 1, wherein the weight ratio of the filament yarn to the low-temperature heat-adhesive resin is from 1: 1 to 0.01. 7. A fishing line comprising the high-strength fiber fused yarn according to any one of claims 1 to 6.