CN114667372B - Ultra-high molecular weight polyethylene welding line - Google Patents
Ultra-high molecular weight polyethylene welding line Download PDFInfo
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- CN114667372B CN114667372B CN202080032929.6A CN202080032929A CN114667372B CN 114667372 B CN114667372 B CN 114667372B CN 202080032929 A CN202080032929 A CN 202080032929A CN 114667372 B CN114667372 B CN 114667372B
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
- D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
- D06M15/21—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D06M15/227—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of hydrocarbons, or reaction products thereof, e.g. afterhalogenated or sulfochlorinated
-
- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
- D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
- D02G3/44—Yarns or threads characterised by the purpose for which they are designed
- D02G3/444—Yarns or threads for use in sports applications
-
- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
- D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
- D02G3/02—Yarns or threads characterised by the material or by the materials from which they are made
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
- D01F6/02—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D01F6/04—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds from polyolefins
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F8/00—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
- D01F8/04—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers
- D01F8/06—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers with at least one polyolefin as constituent
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- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
- D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
- D02G3/22—Yarns or threads characterised by constructional features, e.g. blending, filament/fibre
- D02G3/26—Yarns or threads characterised by constructional features, e.g. blending, filament/fibre with characteristics dependent on the amount or direction of twist
-
- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
- D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
- D02G3/22—Yarns or threads characterised by constructional features, e.g. blending, filament/fibre
- D02G3/40—Yarns in which fibres are united by adhesives; Impregnated yarns or threads
-
- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02J—FINISHING OR DRESSING OF FILAMENTS, YARNS, THREADS, CORDS, ROPES OR THE LIKE
- D02J1/00—Modifying the structure or properties resulting from a particular structure; Modifying, retaining, or restoring the physical form or cross-sectional shape, e.g. by use of dies or squeeze rollers
- D02J1/22—Stretching or tensioning, shrinking or relaxing, e.g. by use of overfeed and underfeed apparatus, or preventing stretch
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04C—BRAIDING OR MANUFACTURE OF LACE, INCLUDING BOBBIN-NET OR CARBONISED LACE; BRAIDING MACHINES; BRAID; LACE
- D04C1/00—Braid or lace, e.g. pillow-lace; Processes for the manufacture thereof
- D04C1/02—Braid or lace, e.g. pillow-lace; Processes for the manufacture thereof made from particular materials
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
- D06M13/02—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with hydrocarbons
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
- D06M2101/16—Synthetic fibres, other than mineral fibres
- D06M2101/18—Synthetic fibres consisting of macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D06M2101/20—Polyalkenes, polymers or copolymers of compounds with alkenyl groups bonded to aromatic groups
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- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2321/00—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D10B2321/02—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds polyolefins
- D10B2321/021—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds polyolefins polyethylene
- D10B2321/0211—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds polyolefins polyethylene high-strength or high-molecular-weight polyethylene, e.g. ultra-high molecular weight polyethylene [UHMWPE]
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Mechanical Engineering (AREA)
- General Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
Abstract
The present invention provides a weld line (1) comprising an ultra-high molecular weight polyethylene multifilament, which comprises 15 wt% or more of liquid paraffin having an average molecular weight of 400 or more. The ultra-high molecular weight polyethylene welding line (1) of the present invention has excellent welding property.
Description
Technical Field
The present invention relates to a weld line (weld line, fuse) formed by welding a plurality of (strip) ultra-high molecular weight polyethylene filaments.
Background
As strings used for aquatic products such as fishing lines and fishing nets, ropes, strings for rackets, and the like, monofilament strings and multifilament (multifilament) strings composed of a plurality of monofilaments are known.
For example, the monofilament thread has excellent surface smoothness and low frictional resistance. Therefore, when the monofilament line is used as a fishing line, the hook assembly can be thrown to the far side. Further, the monofilament thread is not caught (caught) in the inside, so that the draining (water cut) is also good. However, since the monofilament generally has high rigidity, the thicker the monofilament, the lower the flexibility, and the use as a fishing line is difficult. Among them, although ultra-high molecular weight polyethylene filaments have high strength, it is difficult to manufacture them in proportion to the thickness, and rigidity is increased, so that there is a problem in that handling is difficult.
On the other hand, the multifilament yarn is a yarn having a desired thickness and excellent flexibility by appropriately setting the number and thickness of the monofilaments. Therefore, the multifilament yarn is easy to handle and can be suitably used as a fishing line, for example. In particular, the ultra-high molecular weight polyethylene multifilament yarn is high in strength and has the advantage of easy handling. However, the ultra-high molecular weight polyethylene multifilament is likely to trap water inside, and thus has a problem of poor drainage. Further, the ultra-high molecular weight polyethylene multifilament has a problem that filaments of the cut portion are scattered (separated), and feathers (fuzzing) may be formed. The term "scattered" means that the whole body which is integrated into a whole is divided into a plurality of parts.
The multifilament yarn having a single yarn like a monofilament yarn is excellent in drainage and can suppress scattering of filaments. Hereinafter, the form of one thread such as a monofilament thread is referred to as "monofilament thread".
In order to solve the problem of such an ultra-high molecular weight polyethylene multifilament yarn, an ultra-high molecular weight polyethylene welded yarn obtained by welding individual filaments of a multifilament yarn is known (patent documents 1 to 4).
Prior art literature
Patent literature
Patent document 1: japanese patent No. 3669527
Patent document 2: japanese patent laid-open publication No. 2008-75239
Patent document 3: japanese patent laid-open publication No. 2019-31754
Patent document 4: japanese patent application laid-open No. 2008-517168
However, an ultra-high molecular weight polyethylene welding line in which the respective filaments are sufficiently welded has not been provided. Further, a fishing line to be used for connection to a hook assembly or the like is required to have high knot strength. Accordingly, it is desired to provide an ultrahigh molecular weight polyethylene weld line which is excellent in weldability to such an extent that the individual filaments are not scattered and also is excellent in nodular strength.
Disclosure of Invention
The first object of the present invention is to provide an ultra-high molecular weight polyethylene welding line excellent in welding property.
A second object of the present invention is to provide an ultra-high molecular weight polyethylene welding line excellent in nodular strength.
The present inventors have studied, in view of the above-mentioned objects, a substance for promoting or assisting the welding of ultra-high molecular weight polyethylene multifilament yarns. Moreover, on the basis of many experiments, it was found that: the above object can be achieved by using a predetermined amount of liquid paraffin (flow paraffin) having a predetermined molecular weight.
The ultra-high molecular weight polyethylene melt wire of the present invention is a melt wire comprising ultra-high molecular weight polyethylene multifilament, and comprises 15 wt% or more of liquid paraffin having an average molecular weight of 400 or more.
The average molecular weight of the liquid paraffin in the ultra-high molecular weight polyethylene welding line of the present invention is 430 or more.
The average molecular weight of the liquid paraffin in the ultra-high molecular weight polyethylene welding line of the present invention is 450 to 490.
The preferable ultra-high molecular weight polyethylene weld line of the present invention has a single filament fineness of 0.7dtex or more and 2.5dtex or less.
The preferred ultra-high molecular weight polyethylene weld line of the present invention is twisted with a twist multiplier exceeding 0 and 2200 or less.
The ultra-high molecular weight polyethylene welding line is preferably formed by braiding a plurality of any one of the ultra-high molecular weight polyethylene welding lines.
Effects of the invention
The ultra-high molecular weight polyethylene weld line of the present invention is excellent in weldability, and therefore is difficult to be scattered on each wire. The ultra-high molecular weight polyethylene weld line is formed into a single filament shape, has good drainage, and further has excellent surface smoothness.
The ultra-high molecular weight polyethylene weld line of the present invention has excellent knot strength, and can be suitably used as a fishing line, for example. Further, the knot strength of the ultra-high molecular weight polyethylene melt wire according to the present invention is not easily dependent on the knot tying method of the wire, and thus can be particularly suitably used as a fishing line.
Drawings
Fig. 1 is a front view showing one form of an ultra-high molecular weight polyethylene multifilament yarn.
Fig. 2 is a front view showing another form of the ultra-high molecular weight polyethylene multifilament yarn.
Fig. 3 is a front view showing another form of the ultra-high molecular weight polyethylene multifilament yarn.
Fig. 4 is a reference diagram showing an apparatus for manufacturing an ultra-high molecular weight polyethylene welding line.
Fig. 5 is a reference diagram showing modes of the impregnation apparatus and the surplus portion removal apparatus.
Fig. 6 is a reference diagram showing the knot tying method of the thread when measuring the knot strength.
Symbol description
1. Ultra-high molecular weight polyethylene welding line
2. 21, 22, 23 ultra high molecular weight polyethylene multifilament yarn
3. Ultra-high molecular weight polyethylene monofilament
6. Apparatus for manufacturing welding line
Detailed Description
The present invention will be described below with reference to the drawings.
In the present specification, when a plurality of numerical ranges expressed as a lower limit value or higher and a lower limit value or lower are described, an arbitrary lower limit value and an arbitrary upper limit value are selected, and a numerical range of "any lower limit value or higher and any upper limit value or lower" can be set. The term "substantially" is intended to mean a range allowed in the technical field of the present invention.
[ outline of ultra-high molecular weight polyethylene melt wire ]
The ultra-high molecular weight polyethylene welded line of the present invention comprises ultra-high molecular weight polyethylene multifilament and liquid paraffin, and is formed by welding the ultra-high molecular weight polyethylene multifilament. The ultra-high molecular weight polyethylene welding line of the present invention is characterized by comprising 15 wt% or more of liquid paraffin having an average molecular weight of 400 or more. The weld line of the present invention containing a predetermined amount of liquid paraffin having a predetermined molecular weight is excellent in weldability and formed into a single filament shape.
The term "ultra-high molecular weight polyethylene welded line" as used herein refers to a line obtained by welding individual ultra-high molecular weight polyethylene filaments constituting an ultra-high molecular weight polyethylene multifilament. The "ultra-high molecular weight polyethylene multifilament" refers to a state before the individual filaments are welded, and the "ultra-high molecular weight polyethylene monofilament" refers to an ultra-high molecular weight polyethylene filament constituting the ultra-high molecular weight polyethylene multifilament. Hereinafter, the "ultra high molecular weight polyethylene" is referred to as "UHPE".
[ UHPE multifilament yarn (UHPE multifilament yarn before welding) ]
The UHPE multifilament yarn is composed of a plurality of UHPE filaments.
The UHPE is a polyethylene having an increased molecular weight, for example, a polyethylene having a molecular weight of 40 ten thousand or more, and preferably a polyethylene having a molecular weight of 60 ten thousand or more. As the UHPE, the UHPE having a melting point of 140 ℃ or higher is used. The UHPE filaments are filaments produced by subjecting UHPE to so-called gel spinning.
The UHPE multifilament has a tensile strength of 19.6cN/dtex or more, preferably 24.5cN/dtex or more and 49.0cN/dtex or less, more preferably 29.4cN/dtex or more and 39.2cN/dtex or less. Such high-strength UHPE multifilament yarn can be used, for example, in commercial products. Examples of commercial products include: trade names "DYNEEMA" manufactured by DSM company, trade name "SPECTRA" manufactured by Honeywell company, trade name "IZANAS" manufactured by Toyobo company, etc.
The tensile strength can be measured based on JISL1013 (2010) -8.5.
The fineness of the UHPE filaments is not particularly limited. If the fineness of the UHPE filaments is too small, gaps between adjacent filaments in the multifilament become relatively small, and the liquid paraffin becomes difficult to uniformly impregnate the inside of the multifilament, and there is a possibility that the weldability may be lowered. From this viewpoint, the fineness of the UHPE filaments is, for example, 0.5dtex or more, preferably 1.0dtex or more. On the other hand, if the fineness of the UHPE filaments is too large, the gaps between adjacent filaments in the multifilament become relatively large, and there is a possibility that the bonding points (fusion bonds) between filaments per unit volume become low. From this viewpoint, the fineness of the UHPE filaments is, for example, 5.0dtex or less, and preferably 4.0dtex or less.
In the present specification, "tex" as a unit of fineness (thickness) is a weight (gram unit) per 1000m, and "dtex" as a unit of fineness (thickness) is a weight (gram unit) per 10000 m. In the present invention, the fineness can be measured according to JISL1013 (2010) -8.3.1-B) B method as a reference.
The UHPE multifilament yarn is composed of a plurality of the above mentioned UHPE filaments. The number of UHPE filaments constituting the UHPE multifilament is not particularly limited, and is, for example, 5 to 5000 filaments, preferably 10 to 2500 filaments. The fineness of the UHPE multifilament yarn was approximately determined by the fineness of the UHPE filaments×the number of UHPE filaments.
The UHPE multifilament yarn may be a yarn obtained by drawing only a plurality of UHPE filaments constituting the yarn, or may be a yarn obtained by drawing a plurality of UHPE filaments and twisting the yarn, or may be a yarn obtained by braiding a plurality of UHPE filaments. The twisting may be either S twisting (right twisting) or Z twisting (left twisting). The braid may be: a method of knitting a plurality of filaments alternately, a method of knitting a plurality of filaments around a filament serving as a core material, and the like. In addition, the filaments for the braid may be twisted in advance.
Fig. 1 shows a UHPE multifilament yarn 21 composed of a plurality of drawn UHPE filaments 3, fig. 2 shows a UHPE multifilament yarn 22 obtained by S-twisting a plurality of drawn UHPE filaments 3, and fig. 3 shows a UHPE multifilament yarn 23 obtained by Z-twisting a plurality of drawn UHPE filaments 3.
When the UHPE multifilament is twisted, the twist factor K1 is not particularly limited, but is preferably more than 0 and 5500 or less, more preferably 1000 to 5000, still more preferably 2000 to 4500. By using UHPE multifilament yarn having a twist multiplier K1 in the above range, UHPE weld line having a knot strength ratio a/b of 0.9 to 1.1 can be obtained. Further, the twist factor K1 of the UHPE multifilament in which only a plurality of UHPE filaments were drawn together was zero.
The twist multiplier K1 of the UHPE multifilament yarn is represented by formula 1: k1 =t×d 1/2 And the result was obtained. Wherein t in the above formula 1 represents the twist number (times/m) of the UHPE multifilament, and D in the above formula 1The titer (tex) of UHPE multifilament yarn is shown.
[ liquid Paraffin ]
The liquid paraffin is colorless liquid paraffin (liquid paraffin) in a standard state (23 ℃, 1 atm, 50% rh). Liquid paraffin is mainly an aggregate of alkanes having 20 or more carbon atoms.
Mineral oil is a generic term for a mixture of carbohydrates and impurities derived from underground resources such as petroleum, natural gas, and coal. Liquid paraffin is different from mineral oil in that it refines alkanes having 20 or more carbon atoms.
In the present invention, liquid paraffin having an average molecular weight of 400 or more, preferably liquid paraffin having an average molecular weight of 420 or more, more preferably liquid paraffin having an average molecular weight of 430 or more, and even more preferably liquid paraffin having an average molecular weight of 450 or more is used. By incorporating a predetermined amount of such liquid paraffin into the UHPE multifilament, a UHPE weld line excellent in weldability can be obtained. The upper limit of the average molecular weight of the liquid paraffin is not particularly limited, but if it is too large, fluidity is lowered, and the liquid paraffin may be difficult to uniformly impregnate the inside of the multifilament (gaps between the individual filaments). From this viewpoint, the upper limit of the average molecular weight of the liquid paraffin is 800 or less, preferably 700 or less, more preferably 600 or less, and even more preferably 490 or less. For example, commercially available liquid paraffin can be used. Examples of commercial products include: trade name "MORESCO-WHITE" of MORESCO Co., ltd.
Here, the average molecular weight of the liquid paraffin can be calculated by conversion from normal paraffin based on a calibration line (calibration curve) obtained by using paraffin as a standard substance using a gas chromatograph. Specific measurement methods of the average molecular weight of liquid paraffin are described in the following examples.
[ method for producing UHPE welding wire ]
The process for producing a UHPE melt-spun yarn of the present invention comprises, for example, a step of impregnating a UHPE multifilament with a liquid paraffin having an average molecular weight of 400 or more, and a step of heating and stretching the UHPE multifilament containing the liquid paraffin.
Fig. 4 is a reference diagram showing an example of the apparatus 6 for manufacturing a UHPE weld line. The arrow in fig. 4 indicates the travelling direction of the UHPE multifilament yarn 2 (the same applies to fig. 5).
The UHPE multifilament yarn 2 as the raw yarn is loaded into the yarn feeding device 61. As described above, the UHPE multifilament yarn 2 may be packed, or the UHPE multifilament yarn 2 may be packed without being twisted. Further, the UHPE multifilament yarn 2 may also be twisted between the wire feeding device 61 and the first extension device 62. The UHPE multifilament yarn 2 stretched from the yarn feeding device 61 is stretched while being transported from the first stretching device 62 to the second stretching device 66. As the first and second extension devices 62, 66, for example, an extension device composed of a plurality of rollers can be used. An impregnating device 63, a surplus portion removing device 64, and a heating device 65 are disposed in this order between the first extension device 62 and the second extension device 66. The impregnation device 63 impregnates the UHPE multifilament 2 with liquid paraffin. The impregnation method of liquid paraffin is not particularly limited, and examples thereof include the following: the liquid paraffin is applied to the UHPE multifilament 2 using a nonwoven fabric, a spun fabric, bristles, a sponge or the like, the UHPE multifilament 2 is passed through a bath (dipping) in which the liquid paraffin is stored, the liquid paraffin is sprayed to the UHPE multifilament 2 using a spray or the like, or the like. The surplus removal device 64 removes excess liquid paraffin from the UHPE multifilament 2 impregnated with liquid paraffin. The removal method is not particularly limited, and the following methods may be mentioned: the liquid paraffin on the surface of the UHPE multifilament 2 is removed by wiping the liquid paraffin with a nonwoven fabric, a woven fabric, or the like, and by using a roll or the like. The heating device 65 heats the UHPE multifilament 2 impregnated with liquid paraffin, and the like. The heating device 65 is not particularly limited, and may be an oven or the like.
Fig. 5 is a reference diagram showing an example of the impregnating device 63 and the residual part removing device 64.
In the example of fig. 5, the impregnating apparatus 63 includes: a supply portion 631 for supplying liquid paraffin; a storage portion 632 for storing the liquid paraffin supplied from the supply portion 631; and an impregnation section 633 for impregnating the UHPE multifilament 2 with the liquid paraffin stored in the storage section 632. Further, innumerable points are added to the portion where the liquid paraffin exists.
The liquid paraffin is supplied from the supply portion 631 to the storage portion 632 so that the liquid level of the liquid paraffin in the storage portion 632 is maintained at a predetermined height. As the impregnation section 633, a cloth capable of impregnating liquid paraffin is used. The cloth may be: a nonwoven fabric, a felt, or a composite material of a nonwoven fabric and a felt, which can contain liquid paraffin. A portion of one side of the cloth is immersed in the liquid paraffin of the reservoir 632, and the opposite portion of the cloth is in contact with the UHPE multifilament yarn 2. The liquid paraffin in the reservoir 632 is transferred as a cloth-like body in the impregnation section 633, and is brought into contact with and impregnated in the UHPE multifilament 2. The impregnation section 633 is configured to: the distance from the liquid surface of the storage portion 632 to the UHPE multifilament 2, the contact area of the cloth with respect to the UHPE multifilament 2, the contact pressure (contact strength), and the like can be appropriately set. By setting the above matters in the impregnation section 633, the amount of liquid paraffin impregnated into the UHPE multifilament 2 can be adjusted.
The surplus portion removal device 64 is disposed downstream of the impregnation section 633. As the surplus portion removing device 64, a cloth capable of absorbing liquid paraffin is used. The cloth may be: a nonwoven fabric, a felt, or a composite material of a nonwoven fabric and a felt, which can absorb liquid paraffin, or the like. By winding such a cloth around the UHPE multifilament 2, the remaining liquid paraffin of the UHPE multifilament 2 can be removed. The remaining portion removing device 64 is configured to: the contact area and the contact pressure (contact strength) of the cloth-like body with respect to the UHPE multifilament 2 can be appropriately set. By setting the above matters of the surplus portion removal device 64, the amount of excess liquid paraffin removed from the UHPE multifilament 2 can be adjusted.
The UHPE multifilament 2 obtained by stretching the yarn feeder 61 is impregnated with liquid paraffin having an average molecular weight of 400 or more by the impregnation device 63 and the remainder removing device 64, and the remainder is removed. The amount of liquid paraffin contained in the UHPE melt-line, which is the final product, can be set by appropriately adjusting the amount of liquid paraffin impregnated into the UHPE multifilament 2 and the amount of liquid paraffin removed. The UHPE multifilament 2 impregnated with liquid paraffin is heated by a heating device 65. Preferably, the heating is performed such that the temperature of the UHPE multifilament yarn 2 is in the range of 140 ℃ to 158 ℃. After heating, the UHPE filaments 2 are stretched in the longitudinal direction by the second stretching means 66, whereby the UHPE weld line 1 can be produced. The resulting UHPE welding line 1 is wound up on an on-line winding device 67. By making the peripheral speed of the rollers of the second extension means 66 faster than the peripheral speed of the rollers of the first extension means 62, the UHPE multifilament yarn 2 can be suitably extended. In order to preserve or increase the orientation of the molecular chains of the UHPE, the stretching magnification is preferably in the range of 1.5 times or more and 2.5 times or less.
In the illustrated example, the one-stage (stage) heating extension device is illustrated, but the number of stages (stage number) of extension, the number and length of the heating devices, and the like can be appropriately changed.
[ UHPE welding line ]
The UHPE fusion yarn contains the UHPE multifilament and the liquid paraffin having an average molecular weight of 400 or more, and the liquid paraffin content is 15 wt% or more. The content of the liquid paraffin is preferably 18% by weight or more, more preferably 20% by weight or more. If the content of liquid paraffin is too large, liquid paraffin may ooze out to the surface of the UHPE weld line. From this viewpoint, the content of the liquid paraffin is preferably 40% by weight or less, more preferably 35% by weight or less, and still more preferably 25% by weight or less.
Here, the content (%) of liquid paraffin was obtained by the content (% by weight) = (M-N)/n×100. The above-mentioned M represents the weight per unit length of the UHPE welding line containing liquid paraffin, and the above-mentioned N represents the weight per unit length of the UHPE welding line obtained by performing the heat extension treatment without containing liquid paraffin. Specific methods for measuring the content of liquid paraffin are described in the following examples.
The filament fineness of the UHPE weld line is not particularly limited, but if too small or too large, there is a possibility that the weldability may be lowered. From this viewpoint, the filament fineness of the UHPE melt-bonding wire is preferably 0.7dtex or more and 2.5dtex or less, more preferably 0.7dtex or less and 2.2dtex or less, and still more preferably 1.0dtex or more and 1.5dtex or less.
The filament fineness of the UHPE melt-bonded yarn means a value obtained by dividing the fineness of the UHPE multifilament yarn (UHPE multifilament yarn before being melt-bonded) by the elongation and then by the number of filaments.
In the case of twisted UHPE multifilaments, a twisted UHPE weld line is obtained. In this case, the twist factor K2 of the UHPE weld line is not particularly limited, but is preferably more than 0 and 2200 or less, more preferably 400 or more and 2100 or less, and still more preferably 900 or more and 2050 or less. The knot strength ratio a/b of the UHPE welding line having the twist multiplier K2 in the above range is in the range of 0.9 to 1.1. The UHPE weld line having a knot strength ratio (a/b) of 0.9 to 1.1 has little advantage or disadvantage in line strength due to the knotting method. UHPE weld lines having a knot strength ratio in such a range can be suitably used as fishing lines. In addition, the twist factor K2 of the UHPE melt-line obtained from the UHPE multifilament yarn in which only a plurality of UHPE filaments are drawn up is zero.
The twist factor K2 of the UHPE weld line is represented by formula 2: k2 =t×d 1/2 And the result was obtained. Wherein t of the above formula 2 represents the number of twists (times/m) of the UHPE weld line, and D of the above formula 2 represents the weight (in grams) of the weld line per 1000m length, from which the amount of paraffin contained in the weld line is removed. Specific methods for determining the twist factor K2 of the UHPE weld line are described in the examples below.
The UHPE welding line of the invention has excellent welding property. Weldability refers to the degree to which individual filaments constituting the UHPE multifilament before welding are joined to each other by welding. The UHPE weld line having excellent welding properties is in the form of a monofilament. Therefore, the UHPE welding line of the invention has good water dripping, excellent surface smoothness, less possibility of fuzzing during cutting and excellent abrasion resistance.
[ example ]
The present invention will be described in more detail by showing examples and comparative examples. However, the present invention is not limited to the following examples.
UHPE multifilament used >
Multifilament yarn (1): is a multifilament obtained by drawing 96 UHPE filaments together and is a UHPE multifilament having a titer of 22.2 tex. Trade name "IZANAS" manufactured by eastern spinning corporation.
Multifilament yarn (2): is a multifilament obtained by drawing 192 UHPE filaments and is a UHPE multifilament having a titer of 22.2 tex. Trade name "IZANAS" manufactured by eastern spinning corporation.
Multifilament yarn (3): is a multifilament obtained by drawing 120 UHPE filaments together and is a UHPE multifilament having a titer of 22.2 tex. Trade name "IZANAS" manufactured by eastern spinning corporation.
Multifilament yarn (4): is a multifilament obtained by drawing 64 UHPE filaments together, and is a UHPE multifilament having a fineness of 22.2 tex. Trade name "IZANAS" manufactured by eastern spinning corporation.
Multifilament yarn (5): is a multifilament obtained by drawing 32 filaments of UHPE together and is a UHPE multifilament having a titer of 22.2 tex. Trade name "IZANAS" manufactured by eastern spinning corporation.
< adjuvant used >)
Liquid paraffin: 7 kinds of liquid paraffin having different average molecular weights shown in table 1. Manufactured by MORESCO corporation.
Naphthenic base oil (mineral oil): the molecular weight is 348. Manufactured by tricoupling chemical industry company.
Glycerol: the molecular weight was 92. Manufactured by sakazakii pharmaceutical industry company.
Decalin (decalin): decalin (decahydroaphthaene). The molecular weight was 138. Manufactured by KISHIDA chemical company.
Polyethylene glycol: the molecular weight is 400. Manufactured by Sanyo chemical industry Co.
Vegetable oil: coconut oil. The average molecular weight was 200. Manufactured by COCOWELL corporation.
Silicone oil: silicone oils with molecular weights of 2000 and 6000. SILICONE Co.
< determination of molecular weight of adjuvant >
The average molecular weight of the liquid paraffin was calculated by conversion from normal paraffin using a gas chromatograph (trade name "GC-2010" manufactured by shima corporation) based on a calibration line of normal paraffin (trade name "ASTM5442 (C12-C60) 80 standard" manufactured by SIGMA-ALDRICH corporation) as a standard substance.
Specifically, n-paraffin (manufactured by SIGMA-ALDRICH corporation, trade name "ASTM5442 (C12-C60)) as a standard substance was measured by a gas chromatograph (manufactured by shimadzu corporation, trade name" GC-2010 "), and a calibration line was prepared from the retention time (retention time) of the peak value of the standard substance and the molecular weight of the standard substance.
Next, liquid paraffin as a measurement object was measured by a gas chromatograph in the same manner. According to the principle of chromatography, after liquid paraffin moves to a detector with a retention time (retention time) corresponding to its molecular weight, it is converted into an electric signal by the detector. The time elapsed after the sample was applied is taken as the horizontal axis, and the signal intensity obtained by the detector is taken as the vertical axis, whereby a chromatogram is obtained, and the retention time (retention time) of the peak of the signal intensity is measured. The molecular weight of the liquid paraffin to be measured is determined based on the holding time of the peak and the calibration line.
An example of measurement conditions of the gas chromatograph is shown below.
Detector type: and (3) FID.
Column: a capillary column (trade name "Ultraalloy-SIMDIS (HT)") manufactured by FRONTIER-LAB Co. Length: 10m, inside diameter: 0.53mm, film thickness: 0.1 μm.
Carrier gas: helium gas. Flow rate: 24.0 (mL/min), line speed: 140.5cm/s.
Column initial temperature: 35 ℃. Rate of: 10 ℃/min, final temperature: 410 ℃, detector temperature: 420 ℃.
The injection method comprises the following steps: full dose injection. Sample injection amount: 0.5. Mu.L (microliters).
The average molecular weight of coconut oil was also determined by the same method as liquid paraffin.
The molecular weight of the naphthenic base oil is an average molecular weight calculated by an n-d-M method defined in ASTMD 3238.
The molecular weights of glycerol and decalin are determined by molecular formula.
The molecular weight of polyethylene glycol is calculated from mg of potassium hydroxide per 1mol x the hydroxyl number in polyethylene glycol/the hydroxyl number of polyethylene glycol. The hydroxyl value of polyethylene glycol is the number of mg of potassium hydroxide equivalent to the hydroxyl group in 1g of polyethylene glycol.
The molecular weight of the silicone oil is determined by the formula a.j.barre (Log η=1.00+0.0123 m 0.5 ) And calculateAnd (5) outputting. Wherein η represents the kinematic viscosity (mm) at 25 ℃ 2 S), M represents the molecular weight of the silicone oil.
Manufacturing apparatus for use
A manufacturing apparatus 6 having a wire feeding apparatus 61, a first extending apparatus 62, an impregnating apparatus 63, a remainder removing apparatus 64, a heating apparatus 65, a second extending apparatus 66, and a wire winding apparatus 67 in this order as shown in fig. 4 is used. The impregnating apparatus 63 and the surplus portion removing apparatus 64 of the manufacturing apparatus 6 are of the type shown in fig. 5. That is, the impregnating device 63 is a system in which a nonwoven fabric containing an auxiliary agent (liquid paraffin or the like) is brought into contact with the surface of the UHPE multifilament, and the removing system of the surplus removing device 64 is a system in which a dried nonwoven fabric is brought into contact with the surface of the UHPE multifilament. The impregnating apparatus 63 includes a supply portion 631 for continuously supplying an auxiliary agent to the nonwoven fabric, and the supply amount of the auxiliary agent to the nonwoven fabric can be arbitrarily set by the supply portion 631. The heating apparatus used was a device in which two ovens of length 5m of radiant heat type were connected, and the stretching apparatus used was a one-stage stretching type as shown in fig. 4.
[ example 1 ]
The strand feeding device 61 of the production apparatus 6 set at room temperature (23 ℃) was charged with the multifilament (1), and liquid paraffin having an average molecular weight of 400 was supplied as an auxiliary agent to the impregnating device 63. The multifilament (1) was stretched, the above liquid paraffin was applied thereon, and after further removing the remaining liquid paraffin from the multifilament (1), the multifilament was subjected to an elongation treatment while heating to about 155 ℃. Further, the peripheral speed of the first extension device 62 was set to 10m/min, and the peripheral speed of the second extension device 66 was set to 17m/min so that the extension magnification was about 1.7 times.
Examples 2 to 7 and comparative examples 1 to 10
UHPE welding lines of examples 2 to 7 and comparative examples 1 to 10 were produced in the same manner as in example 1, respectively, except that the auxiliary agents shown in Table 1 were changed. For examples 2 to 7 and comparative example 3, the distance from the liquid surface of the reservoir 632 (the liquid surface of the liquid paraffin stored in the reservoir 632) to the multifilament, and the contact pressure of the nonwoven fabric with respect to the multifilament of each of the impregnating device 63 and the surplus portion removing device 64 were changed, respectively, from example 1.
In addition, "MF" in table 1 represents multifilament yarn, "FY" represents UHPE weld line (hereinafter, table 2 to table 4 are also the same).
[ Table 1 ]
< determination of the content of UHPE bonding wire >
The content of the auxiliary agent contained in each UHPE weld line obtained in each example and comparative example was measured. Specifically, each UHPE weld line was cut out 1m, and its weight was measured in 0.1mg units. A wire (hereinafter referred to as a control wire) was produced in the same manner as in example 1 except that no auxiliary agent was applied, and the control wire was cut out by 1m, and the weight thereof was measured in 0.1mg units. Then, the content of the auxiliary agent such as liquid paraffin was obtained by substituting the following formula. The results are shown in Table 1.
The content (wt%) of auxiliary in the UHPE welding line = (M-N)/n×100.
Wherein M represents the weight of the UHPE weld line of each of the examples and comparative examples, and N represents the weight of the control line.
< evaluation of weldability of UHPE weld line >)
The surface of each of the UHPE bonding wires obtained in each of examples and comparative examples was visually observed, and each bonding wire was strongly rubbed with a finger to evaluate the degree of bonding of the wire, and further whether or not it was suitable as a fishing line. The results are shown in Table 1.
AA: the surface of the weld line is sufficiently smooth. The monofilaments are fully welded, and the welding lines are not scattered. Can be very suitable for use as fishing line.
A: the surface of the weld line is sufficiently smooth. The monofilaments are sufficiently welded, and the weld lines are hardly scattered. Can be suitably used as a fishing line.
B: the surface of the bonding wire is smooth. A part of the weld line (one or two per 100 m) is slightly scattered, and is scattered into several filaments at the part. Can be used as a fishing line.
C: the surface of the weld line was confirmed to be Xu Aotu. Most of the weld lines (more than three per 100 m) are scattered, and the weld lines are scattered into several filaments at these portions. There is a possibility that the fishing line can be used as a fishing line.
D: the individual filaments constituting the multifilament are not welded, and the individual filaments are scattered in all the parts, so that no weld line is formed. Can be evaluated as not being usable as a fishing line.
< measurement of filament fineness of UHPE weld line >)
The filament titers of the respective UHPE weld lines obtained in the respective examples and comparative examples were determined. The results are shown in Table 1.
The filament fineness of the UHPE weld line was determined by the following calculation formula.
Filament number = (G1/G2)/G3 of UHPE weld line
Wherein, G1 represents the fineness of the multifilament (multifilament before welding), G2 represents the elongation percentage, and G3 represents the number of filaments of the multifilament, respectively.
For example, the filament number of the UHPE weld lines of examples 1 to 7 and comparative examples 1 to 10 using the multifilament yarn (1) was (22.2 tex/1.7)/96=about 0.136 tex=about 1.36dtex.
< determination of tensile Strength and elongation of UHPE weld line >)
The tensile strength and elongation of each UHPE weld line obtained in each example and comparative example were measured on the basis of JISL1013 (2010) -8.5. The results are shown in Table 1. Further, tensile strength and elongation are also referred to as tensile breaking strength and elongation at break. The tensile strength can be evaluated as more preferable as the numerical value is larger.
Determination of the knot Strength of the UHPE weld line and elongation at the knot
The knot strengths a and b of the UHPE weld lines obtained in each example and comparative example were measured on the basis of JISL1013 (2010) -8.6. The results are shown in Table 1. The knot strength a is the strength when the wire is knotted by the knot tying method a of JISL1013 (2010) -8.6, and the knot strength b is the strength when the wire is knotted by the knot tying method b of JISL1013 (2010) -8.6). For reference, fig. 6 (a) shows a state of the knot tying method a), and fig. 6 (b) shows a state of the knot tying method b).
The ratio (a/b) =nodule intensity a/nodule intensity b.
The elongations a, b of the UHPE weld lines were measured according to JISL1013 (2010) -8.5, both in the knot form a) and in the knot form b). The results are shown in Table 1. The elongation a is the elongation when the string is measured according to JISL1013 (2010) -8.5 in a state where the string is knotted by the knotting method a). The elongation b is the elongation when the string is measured according to JISL1013 (2010) -8.5 in a state where the string is knotted by the knotting method b).
< evaluation of operability of UHPE weld line >
The ease of handling when each of the UHPE weld lines obtained in each of examples and comparative examples was used as a fishing line was evaluated. The results are shown in Table 1.
O: when the fusion line is used as a fishing line and the bait is thrown, the friction resistance between the guide of the fishing rod and the fishing line is low, and the fishing line can be thrown in a farther direction. In addition, during the casting period of 100 times per day, the fishing line is not cut off or wound around the guide of the fishing rod.
X: when the fusion line is used as a fishing line and the bait is thrown, the friction resistance between the guide of the fishing rod and the fishing line is high, and the fishing line cannot be thrown farther. In addition, during the casting period of 100 times per day, the fishing line may be cut more than once and the fishing line may be wound around the guide of the fishing rod.
As in examples 1 to 7, the weld lines of UHPE containing 15 wt% or more of liquid paraffin having an average molecular weight of 400 or more were good in weldability. Further, the UHPE weld lines (examples 2 to 7) containing 15 wt% or more of liquid paraffin having an average molecular weight of 430 or more were excellent in welding property, and particularly the UHPE weld lines (examples 3 to 5) containing 15 wt% or more of liquid paraffin having an average molecular weight of 450 or more and 500 or less were more excellent in welding property. It is also apparent from the comparison of examples 2 to 5 that the weld line containing 18 wt% or more of liquid paraffin having an average molecular weight of 450 to 490 was particularly excellent in weldability.
The closer the knot strength ratio (a/b) is to 1, it can be said that the difference in knot type does not affect the knot strength of the welded line. In other words, the closer the knot strength ratio (a/b) is to 1, the knot strength is said to be independent of the knot-type weld line (hereinafter, the knot strength is referred to as an isotropic weld line). In general, if the knot strength ratio (a/b) is in the range of 0.9 to 1.1, the knot strength can be referred to as an isotropic weld line. Examples 1 to 7 are weld lines with isotropic knot strength.
Examples 1 to 7, which were excellent in weldability, were excellent in handleability. It is assumed that the weld lines of examples 1 to 7 having good weldability have a single filament shape, are difficult to be scattered, and have excellent surface smoothness.
[ example 8 ]
The UHPE weld lines of example 8 were each produced in the same manner as in example 5, except that multifilament yarn (2) was used instead of multifilament yarn (1).
[ example 9 ]
The UHPE weld lines of example 9 were each produced in the same manner as in example 5, except that multifilament yarn (3) was used instead of multifilament yarn (1).
[ example 10 ]
The UHPE weld lines of example 10 were each produced in the same manner as in example 5, except that multifilament yarn (4) was used instead of multifilament yarn (1).
[ example 11 ]
The UHPE weld lines of example 11 were each produced in the same manner as in example 5, except that multifilament yarn (5) was used instead of multifilament yarn (1).
Measurement of the content of UHPE weld line and evaluation of weldability and the like
The content of liquid paraffin contained in each of the UHPE weld lines obtained in examples 8 to 11 was measured in the same manner as in example 1. In addition, the weldability, single filament fineness, tensile strength, elongation, knot strength, handleability, and the like of the UHPE welds obtained in examples 8 to 11 were also measured and evaluated in the same manner as in example 1. The results are shown in Table 2.
[ Table 2 ]
From examples 8 to 11, it was judged that the single filament fineness affects the weldability. As is clear from comparison of examples 8 to 10 with example 11, the fusion bondability was excellent when the single filament fineness was 0.7dtex or more and 2.5dtex or less, and the fusion bondability was particularly excellent when the single filament fineness was 1.0dtex or more and 1.5dtex or less.
Examples 12 to 16
UHPE welding lines of examples 12 to 16 were produced in the same manner as in example 9, except that the multifilament yarn (3) was S-twisted with a twist multiplier K1 shown in Table 3 before the multifilament yarn (3) was fed to the wire feeding device.
[ examples 17 to 21 ]
UHPE welding lines of examples 17 to 21 were produced in the same manner as in example 5, except that the multifilament yarn (1) was S-twisted with a twist multiplier K1 shown in Table 3 before the multifilament yarn (1) was fed to the wire feeding device.
[ examples 22 to 26 ]
The UHPE weld lines of examples 22 to 26 were produced in the same manner as in example 10, except that the multifilament yarn (4) was S-twisted with a twist multiplier K1 shown in table 3 before the multifilament yarn (4) was loaded into the yarn feeding device.
Comparative examples 11 and 12
UHPE weld lines of comparative examples 11 and 12 were produced in the same manner as in example 9, except that multifilament yarn (3) S-twisted with a twist multiplier K1 shown in Table 4 was used and the auxiliary agent shown in Table 4 was changed.
Comparative examples 13 and 14
UHPE weld lines of comparative examples 13 and 14 were produced in the same manner as in example 9, except that multifilament yarn (3) obtained by S-twisting with a twist multiplier K1 shown in Table 4 was used.
Comparative examples 15 and 16
UHPE weld lines of comparative examples 15 and 16 were produced in the same manner as in example 5, except that multifilament yarn (1) S-twisted with a twist multiplier K1 shown in Table 4 was used and the auxiliary agent shown in Table 4 was changed.
[ comparative examples 17 and 18 ]
UHPE weld lines of comparative examples 17 and 18 were produced in the same manner as in example 5, except that multifilament yarn (1) obtained by S-twisting with a twist multiplier K1 shown in Table 4 was used.
Comparative examples 19 and 20
UHPE weld lines of comparative examples 19 and 20 were produced in the same manner as in example 10, except that multifilament yarn (4) S-twisted with a twist multiplier K1 shown in Table 4 was used and the auxiliary agent shown in Table 4 was changed.
[ comparative examples 21 and 22 ]
UHPE weld lines of comparative examples 21 and 22 were produced in the same manner as in example 10, except that multifilament yarn (4) obtained by S-twisting with a twist multiplier K1 shown in Table 4 was used.
Calculation of the twist factor K2 of the UHPE welding line
The twist factor K2 of each UHPE weld line obtained in examples 12 to 26 and comparative examples 11 to 22 was calculated. The results are shown in tables 3 and 4. The results of the fineness of the UHPE bonding wire (the fineness of the UHPE bonding wire itself containing paraffin wax) are also shown in tables 3 and 4 (the fineness is shown in tables 3 and 4 directly below the twist multiplier K2).
The twist factor K2 of the UHPE weld line is represented by formula 2: k2 =t×d 1/2 And calculated. T in the above formula 2 represents the number of turns (times/m) of the UHPE weld line, and D in the above formula 2 represents the weight (g) of the UHPE weld line per 1000m length excluding the amount of paraffin contained.
Specifically, a length of 10cm was taken out from an arbitrary portion of the UHPE weld line, the UHPE weld line having a length of 10cm was observed with an optical microscope, the number of turns was measured, and the number of turns t (times/m) of the weld line was determined by converting the number into an amount of 1 m. The length D of the UHPE weld line per 1000m was determined as follows. The fineness of the UHPE weld line was measured on the basis of the JISL1013 (2010) -8.3.1-B) B method. The titer is the titer of the UHPE melt wire itself containing paraffin (without removal of paraffin). Based on the content of liquid paraffin in the weld line, the paraffin content in the weld line was calculated, and the weight per 1000m of the UHPE weld line from which the paraffin content was removed was determined by removing the paraffin content calculated from the fineness measured above. The twist factor K2 of the UHPE weld line was determined by substituting the obtained twist number t and weight D per 1000m into formula 2.
Measurement of content of UHPE weld line and evaluation of weldability
The content, weldability, single filament fineness, and the like of each of the UHPE weld lines obtained in examples 12 to 26 and comparative examples 11 to 22 were measured and evaluated in the same manner as in example 1. The results are shown in tables 3 and 4.
[ Table 3 ]
[ Table 4 ]
Each of the UHPE weld lines obtained in examples 12 to 26 was excellent in weldability and good in tensile strength and elongation. In contrast, the nodule strength ratio of examples 15, 20, and 25, in which the twist factor K2 was about 2000, was in the range of 0.9 to 1.1, whereas the nodule strength ratio of examples 16, 21, and 26, in which the twist factor K2 was more than about 2500, was outside the above range. From this, it is considered that by setting the twist coefficient K2 to 2200 or less, a welded line having isotropic knot strength can be obtained.
Further, as in comparative examples 11 to 22, when the average molecular weight of liquid paraffin is less than 400 and/or the content thereof is less than 15% by weight, the weldability is poor, and thus the liquid paraffin cannot be used as a fishing line.
In examples 12 to 26, multifilament yarns obtained by S-twisting were used. If the multifilament obtained by performing the Z twist is used, the values of the knot strength a and the knot strength b are estimated to be opposite (inverted) to the corresponding values when performing the S twist.
[ example 27 ]
Four UHPE weld lines were produced, from which the UHPE weld line obtained in example 14 was cut to about 300 m. The UHPE weld line of example 27 was produced by braiding the four weld lines of example 14 into one rope. The knot strength a and knot strength b of the UHPE weld line of this example 27 were measured in the same manner as in example 1. As a result, the nodule strength ratio (a/b) of example 27 was 0.95.
[ example 28 ]
Four UHPE weld lines were produced, from which the UHPE weld line obtained in example 19 was cut to about 300 m. The UHPE weld line of example 28 was produced by braiding the four weld lines of example 19 into one rope. The knot strength a and knot strength b of the UHPE weld line of this example 28 were measured in the same manner as in example 1. As a result, the nodule strength ratio (a/b) of example 28 was 0.99.
[ example 29 ]
Four UHPE weld lines were produced, from which the UHPE weld line obtained in example 24 was cut to about 300 m. The UHPE weld line of example 29 was produced by braiding the four weld lines of example 24 into one rope. The knot strength a and knot strength b of the UHPE weld line of this example 29 were measured in the same manner as in example 1. As a result, the nodule strength ratio (a/b) of example 29 was 0.92.
The weld lines of examples 27 to 29 were weld lines having isotropic knot strength. In addition, even if these weld lines are rubbed strongly with fingertips, fuzzing is not generated.
Industrial applicability
The ultra-high molecular weight polyethylene welding line of the invention can be used for fishing lines for leisure or fishery, nets for fishery, ropes for aquatic products and other materials; industrial materials such as ropes and cords; a material for sports such as strings of tennis rackets and bowstrings; musical instrument materials such as guitar strings; forming a line of protective apparel, etc. In particular, the ultra-high molecular weight polyethylene welding line of the present invention can be suitably used as a fishing line (fishing line) for leisure or fishery.
Claims (5)
1. An ultra-high molecular weight polyethylene welding line is characterized in that,
is a fusion splice comprising ultra-high molecular weight polyethylene multifilament yarn,
contains 15 wt% or more of liquid paraffin having an average molecular weight of 400 or more,
the single filament number of the welding line is more than 0.7dtex and less than 2.5 dtex.
2. The ultra-high molecular weight polyethylene welding line according to claim 1, wherein,
the average molecular weight of the liquid paraffin is more than 430.
3. The ultra-high molecular weight polyethylene welding line according to claim 1, wherein,
the average molecular weight of the liquid paraffin is 450-490.
4. The ultra-high molecular weight polyethylene welding line according to any one of claim 1 to 3, wherein,
the weld line is twisted with a twist multiplier exceeding 0 and 2200 or less.
5. An ultra-high molecular weight polyethylene welding line is characterized in that,
a plurality of the ultra-high molecular weight polyethylene melt-in-wire ropes according to any one of claims 1 to 4.
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| JPS60151311A (en) * | 1984-01-13 | 1985-08-09 | Toyobo Co Ltd | Polyethylene yarn containing liquid paraffin |
| US5540990A (en) * | 1995-04-27 | 1996-07-30 | Berkley, Inc. | Polyolefin line |
| JP2005076149A (en) * | 2003-09-01 | 2005-03-24 | Yotsuami:Kk | Method for producing self-fused yarn |
| CN109594161A (en) * | 2011-12-14 | 2019-04-09 | 帝斯曼知识产权资产管理有限公司 | Multi-filament ultra high molecular weight polyethylene |
| CN106133215A (en) * | 2014-03-28 | 2016-11-16 | 东洋纺株式会社 | Multifilament and braid |
| CN106471167A (en) * | 2014-07-03 | 2017-03-01 | 东洋纺株式会社 | High function multifilament |
| CN110952160A (en) * | 2014-07-03 | 2020-04-03 | 东洋纺株式会社 | Highly functional multifilament yarn |
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| Publication number | Publication date |
|---|---|
| CN114667372A (en) | 2022-06-24 |
| JPWO2022085084A1 (en) | 2022-04-28 |
| JP6862031B1 (en) | 2021-04-21 |
| WO2022085084A1 (en) | 2022-04-28 |
| US20220307192A1 (en) | 2022-09-29 |
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