CN104918665A - Racquet string and method for producing same - Google Patents
Racquet string and method for producing same Download PDFInfo
- Publication number
- CN104918665A CN104918665A CN201480004749.1A CN201480004749A CN104918665A CN 104918665 A CN104918665 A CN 104918665A CN 201480004749 A CN201480004749 A CN 201480004749A CN 104918665 A CN104918665 A CN 104918665A
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- Prior art keywords
- musical instrument
- heart yearn
- strand
- qiao
- string
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 14
- 229920005989 resin Polymers 0.000 claims abstract description 50
- 239000011347 resin Substances 0.000 claims abstract description 50
- 238000002844 melting Methods 0.000 claims abstract description 37
- 230000008018 melting Effects 0.000 claims abstract description 37
- 238000000034 method Methods 0.000 claims description 18
- 238000010438 heat treatment Methods 0.000 abstract description 12
- 238000004804 winding Methods 0.000 abstract description 9
- 238000009954 braiding Methods 0.000 abstract description 4
- 239000000835 fiber Substances 0.000 description 23
- 239000004677 Nylon Substances 0.000 description 19
- 229920001778 nylon Polymers 0.000 description 19
- 239000011162 core material Substances 0.000 description 15
- 229920000572 Nylon 6/12 Polymers 0.000 description 11
- 229920002292 Nylon 6 Polymers 0.000 description 10
- 230000000052 comparative effect Effects 0.000 description 10
- 229920000305 Nylon 6,10 Polymers 0.000 description 9
- 229920002302 Nylon 6,6 Polymers 0.000 description 8
- 229920000577 Nylon 6/66 Polymers 0.000 description 8
- 239000004952 Polyamide Substances 0.000 description 8
- TZYHIGCKINZLPD-UHFFFAOYSA-N azepan-2-one;hexane-1,6-diamine;hexanedioic acid Chemical compound NCCCCCCN.O=C1CCCCCN1.OC(=O)CCCCC(O)=O TZYHIGCKINZLPD-UHFFFAOYSA-N 0.000 description 8
- 229920002647 polyamide Polymers 0.000 description 8
- 238000011156 evaluation Methods 0.000 description 7
- 230000000704 physical effect Effects 0.000 description 7
- 239000002904 solvent Substances 0.000 description 7
- JHWNWJKBPDFINM-UHFFFAOYSA-N Laurolactam Chemical compound O=C1CCCCCCCCCCCN1 JHWNWJKBPDFINM-UHFFFAOYSA-N 0.000 description 6
- 229920000299 Nylon 12 Polymers 0.000 description 6
- 229920001577 copolymer Polymers 0.000 description 6
- 239000000203 mixture Substances 0.000 description 6
- 238000012360 testing method Methods 0.000 description 6
- 229920003189 Nylon 4,6 Polymers 0.000 description 5
- 238000007334 copolymerization reaction Methods 0.000 description 5
- 238000006073 displacement reaction Methods 0.000 description 5
- ZMUCVNSKULGPQG-UHFFFAOYSA-N dodecanedioic acid;hexane-1,6-diamine Chemical compound NCCCCCCN.OC(=O)CCCCCCCCCCC(O)=O ZMUCVNSKULGPQG-UHFFFAOYSA-N 0.000 description 5
- 239000004831 Hot glue Substances 0.000 description 4
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 4
- 238000010009 beating Methods 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- 238000002074 melt spinning Methods 0.000 description 4
- 235000009854 Cucurbita moschata Nutrition 0.000 description 3
- 240000001980 Cucurbita pepo Species 0.000 description 3
- 235000009852 Cucurbita pepo Nutrition 0.000 description 3
- 229920000571 Nylon 11 Polymers 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 235000020354 squash Nutrition 0.000 description 3
- 238000000113 differential scanning calorimetry Methods 0.000 description 2
- 238000007602 hot air drying Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- 229920006118 nylon 56 Polymers 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 229920006012 semi-aromatic polyamide Polymers 0.000 description 2
- 238000003786 synthesis reaction Methods 0.000 description 2
- 238000009941 weaving Methods 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 1
- 229920000007 Nylon MXD6 Polymers 0.000 description 1
- 238000003556 assay Methods 0.000 description 1
- 239000007767 bonding agent Substances 0.000 description 1
- 238000000205 computational method Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003203 everyday effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000012943 hotmelt Substances 0.000 description 1
- 239000012770 industrial material Substances 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229920006111 poly(hexamethylene terephthalamide) Polymers 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- -1 their copolyamide Substances 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B51/00—Stringing tennis, badminton or like rackets; Strings therefor; Maintenance of racket strings
- A63B51/02—Strings; String substitutes; Products applied on strings, e.g. for protection against humidity or wear
Landscapes
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Physical Education & Sports Medicine (AREA)
- Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
- Braiding, Manufacturing Of Bobbin-Net Or Lace, And Manufacturing Of Nets By Knotting (AREA)
- Multicomponent Fibers (AREA)
- Stringed Musical Instruments (AREA)
Abstract
This racquet string (1) is a braided string including core threads (2), sheath braided threads (4) on the outer side of the core threads, and a surface resin layer (5) on the outer side of the sheath braided threads; hot-melt-type flat monofilaments (3) being wound flatly around the core threads (2), and the core threads (2) and the sheath braided threads (4) being integrated by thermobonding. This string production method involves flatly winding the hot-melt-type flat monofilaments (3) around the core threads (2), braiding the sheath braided threads (4) over the surface of the monofilaments, heating the resulting braided threads to or above the melting point of the flat monofilaments (3), and melting the flat monofilaments (3) to integrate the core threads (2) and the sheath braided threads (4) by thermobonding. A highly durable racquet string is thereby provided, with which is obtained a comparatively hard hitting feeling and a pleasant hitting sound, and with which there is little tension loss.
Description
Technical field
The present invention relates to the racket synthesis string of a musical instrument of shuttlecock, tennis, squash etc.Particularly relate to have be suitable for shuttlecock compared with hard sense and the racket string of a musical instrument comfortable beating sound, loss of tension is little, durability is high of playing ball.
Background technology
In the past, as the racket synthesis string of a musical instrument of tennis, shuttlecock, squash etc., more propose with the string of a musical instrument of thin monofilament by the string of a musical instrument or braiding (system band) that become the outside winding of the monofilament of core or multifilament.Such as, in the shuttlecock string of a musical instrument, braiding on the multifilament being generally used in core (system band) is as string of a musical instrument of the thin monofilament of diameter about the 0.06mm of rubber-insulated wire.The thin string of a musical instrument is played sense or beats sound excellent usually, but exist durability poor between topic, thus expectation meets the exploitation of both strings of a musical instrument.
In patent document l, propose and be coated with copolymerizable thermosetting resin solution on heart yearn.In patent document 2, propose and make it melting adhered lower than the material of core material for sheath with fusing point.In patent document 3, propose and be with carrying out system to sheath part after adhering resin melt coating is on heart yearn and make its hot melt adhesive.
Prior art document
Patent document
Patent document 1: Japanese Unexamined Patent Publication 2005-304678 publication
Patent document 2: Japanese Unexamined Patent Publication 60-86598 publication (Japan is real is willing to clear 59-120410 entire disclosure)
Patent document 3: Japanese Unexamined Patent Publication 2007-177355 publication
Summary of the invention
Invent problem to be solved
But, carry out in the method for patent document l of process of resin to liquid adhering resin is dissolved in solvent, owing to using solvent, thus have problems in environment, in addition, must select the solvent not dissolving wick fibers, spendable resin is restricted.And then the concentration of resin or viscosity easily change because of variations in temperature or solvent volatilization etc. in processing, there is the problem of the inequality easily producing quality.In addition, when heart yearn is multifilament, it is inner that resin solution enters to heart yearn structure, thus also there is the few problem of surface resin quantitative change.There is the advantage not using solvent in the hot melt adhesive method of patent document 2, but has preferred resin use amount to be the record of more than 25% weight of the string of a musical instrument.Use in large quantities if so, then the diameter of the string of a musical instrument is thicker, and adhering resin is almost helpless to intensity, is thus difficult to obtain the thin and string of a musical instrument of high strength, exists to play sense, beat the problem that sound all worsens.Patent document 3 discloses and is coated on heart yearn by resin melting, but on the surface of thin core thinner and equably melt coating be difficult technically, when coating weight is excessive, the diameter of the string of a musical instrument obtained in the same manner as above-mentioned patent document 2 is thicker, there is the problem making to play sense deterioration.
The present invention, in order to solve above-mentioned problem in the past, provides a kind of acquisition harder play sense and beat sound and the racket string of a musical instrument that loss of tension is little, height is durable with comfortable.
For the means of dealing with problems
The feature of the racket string of a musical instrument of the present invention is, it is the racket string of a musical instrument of the braid type comprising the Qiao Bu strand outside heart yearn, described heart yearn and the surface resin layer outside described Qiao Bu strand, wherein, the flat monofilament of heat molten type is flattened wound on described heart yearn, and described heart yearn is integrated by heat bonding with Qiao Bu strand.
The feature of the manufacture method of the racket string of a musical instrument of the present invention is, the described racket string of a musical instrument comprises heart yearn, Qiao Bu strand outside described heart yearn, and the racket string of a musical instrument of the braid type of surface resin layer outside described Qiao Bu strand, the manufacture method of the described racket string of a musical instrument comprises: be flattened wound on described heart yearn by the flat monofilament of heat molten type, on its surface by Qiao Bu strand band, the band line processed obtained is heated to the temperature of more than the fusing point of described flat monofilament, make the melting of described flat monofilament and described heart yearn and Qiao Bu strand to be carried out heat bonding integrated, thereafter, surface resin layer is formed in the outside of described Qiao Bu strand.
Invention effect
The present invention can provide a kind of racket string of a musical instrument, it comprises the Qiao Bu strand outside heart yearn, heart yearn and the surface resin layer outside Qiao Bu strand, by the flat monofilament of heat molten type is flattened wound on heart yearn, and it is integrated heart yearn and Qiao Bu strand to be carried out heat bonding, thus the loss of tension of being opened when being located at racket by the string of a musical instrument is little, harder sense of beating can be obtained when playing ball and beat sound with comfortable, and high durable.
Accompanying drawing explanation
Figure l is the exploded perspective view of the racket string of a musical instrument in one embodiment of the invention.
Fig. 2 A-C is the profile of the flat monofilament in one embodiment of the invention.
Fig. 3 is the model utility key diagram of the orthogonal friction test device used in embodiments of the invention.
Detailed description of the invention
For the melting adhered method not using solvent, while keeping cementability, importantly make the use amount minimization of resin, the present inventor etc. are conceived to this point and have carried out studying with keen determination, found that, flattened reeled by the flat monofilament of the heat molten type by thinner thickness and overlayed on the outer surface of heart yearn, and above-mentioned flat monofilament is carried out heating and melting, thus makes heart yearn be undertaken integrated with Qiao Bu strand by heat bonding, thus complete the present invention.Also find more preferably, in order to improve Qiao Bu strand cementability each other, the melting range importantly by making hot melt adhesive temperature rise to Qiao Bu strand, thus the fiber surface of Shi Qiaobu strand is softening, reciprocally partial melting bonding.
The present invention is in the racket string of a musical instrument of braid type comprising the Qiao Bu strand outside heart yearn, heart yearn and the surface resin layer outside Qiao Bu strand, the flat monofilament of heat molten type is flattened wound on heart yearn, and it is integrated heart yearn and Qiao Bu strand to be carried out heat bonding.When string of a musical instrument weight is set to 100 % by weight, the ratio of flat monofilament is preferably the scope of 2 ~ 12 % by weight.More preferably 2.5 ~ 8 % by weight.As long as above-mentioned scope then can obtain carefully and the string of a musical instrument of high strength.
In the present invention, preferably by the melting of flat monofilament, except heart yearn is integrated with the heat bonding of Qiao Bu strand, the Qiao Bu strand state that also a part is reciprocally melt bonded in outside.Thus, Qiao Bu strand is also bonding each other, thus seeks the play ball raising of sound and the raising of durability.
The fusing point of heart yearn, Qiao Bu strand and flat monofilament is preferably by shown in following formula.As long as be following formula, then when the heat fusing of flat monofilament, can prevent the intensity of heart yearn and Qiao Bu strand from reducing, obtain carefully and the string of a musical instrument of high strength.
TM3＜TM2≤TM1
Wherein, TM1 is the fusing point of heart yearn, the fusing point of TM2 Shi Qiaobu strand, and TM3 is the fusing point of flat monofilament.
Manufacture method of the present invention is flattened wound on heart yearn by the flat monofilament of heat molten type, on its surface by Qiao Bu strand band, the band line processed obtained is heated to the temperature of more than the fusing point (TM3) of flat monofilament, by the melting of flat monofilament, it is integrated heart yearn and Qiao Bu strand to be carried out heat bonding.The temperature of heat bonding is preferably more than TM3+30 DEG C and less than TM2+15 DEG C.More preferably more than TM3+40 DEG C and the temperature of less than TM2+10 DEG C.As long as be above-mentioned scope, then while making heart yearn and Qiao Bu strand heat bonding, also can the partial melting bonding each other of Shi Qiaobu strand.
The stretching ratio of the band line above-mentioned processed during heat bonding is preferably 0.95 ~ 1.20 times.Preferred stretching ratio is 1.00 ~ 1.10 times further.If carry out heat bonding with above-mentioned stretching ratio, then can prevent thermal contraction under tension, can obtain carefully and the string of a musical instrument of high strength.
The thickness of flat monofilament is preferably 0.015 ~ 0.06mm, more preferably 0.02 ~ 0.05mm.The flatness (width/thickness) of flat monofilament is preferably 1.5 ~ 100, and more preferably 2.5 ~ 80.As long as the thickness of flat monofilament and flatness are above-mentioned scope, then while making heart yearn and Qiao Bu strand heat bonding also can Shi Qiaobu strand each other partial melting bond.
Time on surface flat monofilament being flattened wound on heart yearn, must be noted that as follows.
(1) when manufacturing flat monofilament, batching so that the coiling machine of transverse direction is untwisted, when being wound on heart yearn, extracting out from the spiral body of transverse direction, making it not twist.
(2) when manufacturing flat monofilament, when carrying out batching twisting being undertaken batching by longitudinal coiling machine, when being wound on heart yearn, extracting out from unidirectional spiral body, making it not twist.
The flat monofilament be wound on heart yearn is preferably 15 ~ 70% relative to the covering rate on above-mentioned heart yearn surface, and more preferably 20 ~ 50%.As long as be this scope, then while making heart yearn and Qiao Bu strand heat bonding, also can the partial melting bonding each other of Shi Qiaobu strand.
The section shape being wound on the flat monofilament on heart yearn is preferably the irregular flat of tool.As long as section shape is concavo-convex, then there is following feature: when when being wound on Qiao Bu strand band by flat monofilament after on heart yearn, produce friction, thus can band processed securely, and, with also improving bonding force on a small quantity.
Heart yearn raw material are also not particularly limited, and are preferably high strength polyamide filaments line.As polyamide, the fatty polyamide system resins such as nylon 6, nylon66 fiber, NYLON610, nylon 612, nylon 46, nylon 56, nylon 410, nylon 12 can be enumerated, the semiaromatic polyamide composition system resins such as nylon 9 T, nylon MXD 6, nylon 6T.Particularly preferably can enumerate the high-strength complex silk thread of nylon 6, nylon66 fiber.Usual known high strength polyamide thread is used as the industrial materials such as cotton tyre cord (tire cord).
The preferred filament number of heart yearn is 2 ~ 10deci tex, and total fiber number is 1500 ~ 7000deci tex.It is 150 ~ 3500 that the preferred long filament of heart yearn forms radical.
When the fusing point of heart yearn is set to the situation of TM1, TM1 is preferably more than 170 DEG C, is more preferably more than 200 DEG C.In addition, in the present invention, fusing point is the value represented by peak temperature when utilizing differential scanning calorimetry (DSC) (DSC) to measure under programming rate 20 DEG C/min.The physical property of physical property to the string of a musical instrument of heart yearn affects greatly.The intensity of preferred multifilament is 5.0 ~ 12.0cN/deci tex, and percentage elongation is about 16 ~ 25%.Heart yearn as required also can with other long filaments and with or mixed.
Heart yearn is preferably twisting and uses, and is preferred, preferably uses 30 ~ 300 times/about m as twisting count in this convergence in endless tow, proper circle, percentage elongation etc.In order to improve heart yearn each other bonding and give suitable hardness to heart yearn, also process of resin can be carried out with the resin with cementability.In addition, the fiber of the thermal bonding of low melting point also can be used with in heart yearn.
As Qiao Bu strand (fusing point: TM2), preferably use by identical with the fusing point of heart yearn or lower than the fusing point of heart yearn and the long filament formed higher than the resin of the fusing point of the low-melting-point resin be wound on core.As raw material, can preferably enumerate the polyamide series resin identical with heart yearn, as an example, preferably nylon 6, nylon66 fiber, NYLON610, nylon 612, nylon 46 is used, fatty polyamide or their copolyamides such as nylon 56, nylon 410, nylon 11, nylon 12.When heart yearn composition be nylon66 fiber or nylon 6, as preferred Qiao Bu strand, use nylon 6 or nylon 6/66 copolymer, nylon 6/12 copolymer etc.In addition, also can be blending in nylon 6 and have the long filament of the copolymer nylon that the fusing point of about 5 ~ 80% is lower.
As Qiao Bu strand, the Qiao Bu strand that preferred filament number is thicker than the filament number of the multifilament of heart yearn, preferably uses the long filament of the monofilament doubling of l root monofilament or about 2 ~ 4 as strand.When filament number is excessively thick or when the radical of long filament is too much, the diameter after system band is thicker, thus not preferred.In addition, the section shape of long filament also can be used for oval or compressed cross section person.Also connecting-type section long filament disclosed in the Japanese Unexamined Patent Publication 2008-48867 publication preferably using the applicant to file an application.The preferred filament number of Qiao Bu strand is 10 ~ 100deci about tex.The strand being preferably use 8 ~ 32 these filament numbers carries out system band and makes sheath portion.
The outside of heart yearn flattened reel heat molten type flat monofilament after by Qiao Bu strand band.Braiding can adopt known method.Be preferably the pocket builder using such as 16 ingots.The rolling step of flat monofilament can be the operation of separating with the band operation processed of Qiao Bu strand, and it also can be made continuous.
The flat monofilament of heat molten type preferably uses fusing point lower than the filament fiber of heart yearn and Qiao Bu strand and has the raw material of good cementability relative to the formation filament fiber of the strand in heart yearn and sheath portion.Select as 100 DEG C ~ 180 DEG C of preferred fusing point (TM3) scope, the resin of TM3<TM2≤TM1 and fusing point be lower than the resin of wick fibers, Qiao Bu strand fiber.As the example of such resin, can enumerate and make two or more being selected from the amorphous nylon such as nylon 6, nylon66 fiber, nylon 12, nylon 11, NYLON610, nylon 612 carry out copolymerization and the copolyamide system resin obtained or Polyurethane system resin.Be more preferably the resin of low more than 30 DEG C of the fusing point than Qiao Bu strand fiber.Specifically, nylon 6/12, nylon 6/66/610, nylon 6/66/12, nylon 6/12/610, nylon 6/12/612, nylon 12/612, nylon 6/66/610/12, nylon 6/66/610/612 copolymer etc. can be enumerated, but be not limited to these, as hot-melt-bondable resin, hot-melt-bondable fiber, can from known copolymer nylon suitable choice for use.
According to the research of the present inventor etc., even if playing sense to obtain, playing the good and thin string of a musical instrument also with durability of sound, as mentioned above, amount and the imparting state of bonding agent composition are important, and while the sufficient cementability of imparting, as far as possible quantitatively reduce imparting amount is important.Therefore, flat monofilament is used as the form of the material of winding in the present invention.When the multifilament that long filament radical is more, be difficult to control equably thickness or the width of the lines under reeling condition, occur the part that the diameter of the string of a musical instrument is thick or occur space, thus not preferred.
The preferred filament number of flat monofilament is 10 ~ 150deci tex.Preferred filament number is 20 ~ 100deci tex (dtex).L root is preferably flattened wound on heart yearn by flat monofilament, but also can be many for the bobbin (bobbin) reeled.
In the melting by flat monofilament, heart yearn and Qiao Bu strand are carried out heat bonding integrated after, form surface resin layer in the outside of Qiao Bu strand.Surface resin layer is by being carried out by the nylon resin be dissolved in solvent flooding or melt coating and being formed.Nylon resin is also not particularly limited, and can use fatty polyamide and the semiaromatic polyamide compositions such as their copolyamide, nylon 9 T such as nylon 6, nylon66 fiber, nylon 46, NYLON610, nylon 612, nylon 11, nylon 12.By flooding or being coated with, color, outward appearance, durability can be improved.And then painted, heat treatment, lettering, finish imparting etc. can be carried out as required.
Then accompanying drawing is used to be described.Fig. 1 is the exploded perspective view of the racket string of a musical instrument 1 in one embodiment of the invention.The flat monofilament 3 of heat molten type is flattened wound on heart yearn 2 by this racket string of a musical instrument 1, and heart yearn 2 is carried out heat bonding integrated (in order to make figure should be readily appreciated that, 3 flat monofilaments represented illustrate the shape before melting) with Qiao Bu strand 4.Surface resin layer 5 is formed on the surface of Qiao Bu strand 4.In figure l, illustrate that heart yearn 2 is the example of multifilament, but also can be monofilament.The radical of multifilament also can at random be selected.In addition, Qiao Bu strand 4 shows the example of 4 connection monofilament of section circle, but also can be 2 ~ 8 connections.Or, also 2 ~ 4 monofilament can be arranged side by side.
In the present invention, flat monofilament is preferably selected from that multiple section circle connects into the shape of row, multiple section circle connects and at least one in ganoid concaveconvex shape and elliptical shape.It is such as the section shape shown in Fig. 2 A-C.Fig. 2 A is the flat monofilament 6 that 5 section circles are formed by connecting, and flatness L/D is about 5.Wherein, L represents width, and D represents thickness.Such as L=0.165mm, D=0.035mm.Fig. 2 B is ganoid concavo-convex flat monofilament 7.Fig. 2 C is the elliptoid flat monofilament 8 of surperficial no concave-convex.
Embodiment
Embodiment is below adopted to be described particularly.Moreover the present invention is not limited to following embodiment.Below in an example, the evaluation of monofilament and the string of a musical instrument is carried out with following method.
< physical property test >
Intensity, knot strength, percentage elongation are according to the assay method of JIS L1013.Diameter uses micrometer, and the Simultaneously test that monofilament is rotated a little 5 times, is set to diameter by mean value.
< resilience, rigidity >
When for the shuttlecock string of a musical instrument, 1 string of a musical instrument is fixed two ends (clamping is spaced apart 30cm) with the tension force stretching of 20 pounds with fixture.Use the hammer of pendulum-type, lay from fixed position in the mode of colliding at right angles, in the horizontal direction relative to the string of a musical instrument at the central portion of the string of a musical instrument, with the movement (displacement) of the string of a musical instrument of l/1000 measuring space second collision rift and stress, following computational methods are utilized to obtain rigidity (pounds per inch) and rebound degree (%).
Rigidity=maximum stress P (pound)/horizontal direction maximum displacement L (inch)
Rebound degree (%): (S2/S1) × 100
S1: the area of the part (toward portion) from collision to maximum displacement in stress-strain (displacement) curve (coming and going)
S2: the area rigidity value from maximum displacement position to zero shift (returning portion) of load-deformation curve is higher, then represent harder under the state being located at racket, numerical value is lower, represents more soft.
Rebound degree is higher, then represent the energy loss resilience larger (bibliography: Rod Cross " Laboratory testing of tennis string " Sports Engineering (2000) 3,219-230) less in collision.
The orthogonal friction of < durability l>
The orthogonal friction test device 10 shown in Fig. 3 is used to be described.The string of a musical instrument 11 is fixed two ends (13a, 13b) along the horizontal direction of arrow P under the state of the tension force of applying 30 pounds.The identical string of a musical instrument 12 is intersected on right-angled horizontal direction with the above-mentioned string of a musical instrument 11, and one end 12a fixes, and the load 14 other end 12b being applied to 2kg makes it hang.This string of a musical instrument 12 at right angles to hangs on two ends through the fixing string of a musical instrument 11 in same level, is pulled downwardly stretches under the weight of load in vertical direction.Under the state applying load to this string of a musical instrument 12, as shown in arrow Q, level right angle direction make it reciprocate 10mm with the speed coming and going 1 time for 1 second.Evaluate with the fluffing state of the string of a musical instrument 12 after double rubs.Become large Rubbing number to the string of a musical instrument (12) cut-out or fluffing to evaluate.The less situation of fluffing after 200 frictions is set to more than 200 times.
Endurancing under < durability 2> shuttlecock hits
The string of a musical instrument is located at racket with 25 pounds, the shuttlecock impacted out from shuttlecock (shuttlecock) beating unit (SIBOASI company Shuttlecock shooter) (speed is about 150km/ hour, 5 seconds intervals) is hit to racket continuously with the distance of 50cm, the angle of 30 degree, evaluates with the number of times that the string of a musical instrument cuts off.
< loss of tension >
During situation for the shuttlecock string of a musical instrument, apply the load of 25 pounds, fixing two ends.Obtain the ratio (conservation rate) of the stress (F) after room temperature placed for 1 week relative to initial load.
Tension force conservation rate (%): (after placing stress F/25) × 100
< beats sound and evaluates >
Implement 5 grade evaluations undertaken by 4 senior players.Only string of a musical instrument evaluation is changed, on average to represent under the racket and tension force poundage of examination hitter every day use.
5 clear and comfortable beat sound
4 comfortable a little beat sound
3 general (beating sound level under the normally used string of a musical instrument, tension force)
2 dozens of sound are slightly poor
1 dozen of statement significant difference
(EXAMPLE l ~ 5)
The shuttlecock string of a musical instrument is manufactured with operation below.
(1) heart yearn
As heart yearn, use the long filament line of trade name " Promilan " (nylon66 fiber) Toray company manufactured (fusing point 260 DEG C forms radical 342, total fiber number 2340deci tex) to carry out Z and twist 200 times/m and the line that obtains.
(2) the flat monofilament of heat molten type and rolling step
Use low melting point copolymer nylon, trade name " CM8000 " (fusing point 137 DEG C) that Toray company manufactures, made the flat monofilament of 5 round shapes be formed by connecting of section as Fig. 2 A by melt spinning.Flatness L/D is about 5, L=0.165mm, D=0.035mm, and fiber number is 49deci tex.1 this flat monofilament is changed winding times under the condition shown in table l and is flattened wound in heart yearn surface.The weight of the monofilament of winding, monofilament are shown in table 1 (, winding weight is actual measurement, and covering rate is obtained by calculating according to weight) herein relative to the area covering rate on heart yearn surface.Up-coiler is installed on the heart yearn supply portion of pocket builder, carries out continuously reeling and band processed.
(3) Qiao Bu strand and system band operation
As Qiao Bu strand, use copolymer nylon (Mitsubishi エ Application プ ラ Inc., trade name " 2030J ", the nylon 6/66=95/5 of nylon 6 and nylon66 fiber; Fusing point 215 DEG C) and the monofilament of the section shape that 4 circles are formed by connecting is made by melt spinning.Flatness L/D is about 4, L=0.04mm, D=0.16mm, and fiber number is 64deci tex, and intensity is 4.8N, and percentage elongation is 31.5%.This monofilament, in each root use 16, utilizes the pocket builder of 16 ingots, carries out weaving (system band) on the surface of the heart yearn being flattened wound with above-mentioned flat monofilament.The physical property of system band line is shown in table l.
(4) heat bonding operation
Band after above-mentioned band processed is heat-treated by the hot-air drying device of temperature 215 DEG C for 40 seconds.Stretching ratio is set to 1.03.By this heat treatment, the melting of low melting point flat monofilament, heart yearn and Qiao Bu strand carry out heat bonding and integrated.In addition, the melt bonded of Qiao Bu strand (rubber-insulated wire) can also be seen.Physical property after heat treatment is shown in table l.The increase of intensity, the minimizing of percentage elongation can be seen by heat treatment.
(5) surface resin layer formation process
Band after above-mentioned heat bonding to be impregnated in nylon 46 phenol solution 1 time, dry and obtain the shuttlecock string of a musical instrument at 90 DEG C.The exploded perspective of the obtained string of a musical instrument is illustrated in Fig. 1.Wherein, in order to make structure easy understand, the core state of figure shows the reeling condition before heat treatment.
(comparative example 1)
Except low melting point monofilament in EXAMPLE l not being wound on except on heart yearn, the string of a musical instrument of comparison under the condition identical with EXAMPLE l.The evaluation result of product is shown in table 2.Compared with EXAMPLE l, durability, tension force retentivity, to beat sound poor.
(comparative example 2)
Core line is become the flat monofilament of above-described embodiment, by the round section long filament doubling of the single thread 10d of 5 same resin, reel under core winding condition similarly to Example 1, make the string of a musical instrument at identical conditions in addition.Show the result in table 2.Compared with EXAMPLE l, durability, tension force conservation rate, to beat sound poor.And the long filament of 5 winding lines may not arrange on the flat ground in l layer, can see multi-layer portion or distortion.
(comparative example 3)
As core line, reel similarly to Example 1 with commercially available low melting point heat bonding polyamide multifilament line (Fujiette Inc., trade name " Joiner " 50T-10f, fusing point 130 DEG C), make the string of a musical instrument under the same conditions in addition.Show the result in table 2.Compared with embodiment 1, durability, tension force maintenance, to beat sound all poor.
(comparative example 4)
The processed band line identical with embodiment 4 is carried out the heat treatment of 130 DEG C of the fusing point lower than the flat monofilament be wound on core, in addition, make the string of a musical instrument under the same conditions.Show the result in table 2.Observe if decomposed by the string of a musical instrument, then core monofilament is easily untied, and does not almost see heat bonding.The durability of the string of a musical instrument, particularly orthogonal friction are lower result.
(embodiment 6)
Until heat treatment step uses the string of a musical instrument identical with embodiment 4, the NYLON610 phenol solution of surface resin working fluid is used as to make the string of a musical instrument.Product evaluation result is shown in table 1.Product evaluation result is good similarly to Example 4.
(embodiment 7)
Use low melting point nylon, trade name " 7128B " (nylon 6/12=40/60 that Yu Buxingchan company manufactures; Fusing point 130 DEG C), the flat monofilament of 5 round shapes be formed by connecting of section as Fig. 2 A is made by melt spinning.Flatness L/D is about 5, L=0.165mm, D=0.035mm, and fiber number is 51deci tex.Under the condition identical with embodiment 4, this flat monofilament of l root is flattened wound in heart yearn surface.The weight of the monofilament reeled, monofilament are shown in table 1 relative to the area covering rate on heart yearn surface.As Qiao Bu strand, use nylon 6 is copolymer nylon (Mitsubishi エ Application プ ラ company, trade name " 2430J " the nylon 6/66=80/20 of 75% and nylon 6/66; Fusing point 190 DEG C) be 25% blending resin, and made the monofilament of the section shape that 4 circles are formed by connecting by melt spinning.Flatness L/D is about 4, D=0.04mm, L=0.15mm, and fiber number is 62deci tex, and intensity is 4.9N, and percentage elongation is 29.9%.Use total 16 with 1 this monofilament for strand, utilize the pocket builder of 16 ingots, carry out on the surface of the heart yearn being flattened wound with above-mentioned flat monofilament weaving (system band).The physical property of system band line is shown in table l.Band after above-mentioned band processed is heat-treated by the hot-air drying device of temperature 220 DEG C for 40 seconds.Stretching ratio is set to 1.02.By this heat treatment, heart yearn and Qiao Bu strand carry out heat bonding and integrated.In addition, the melt bonded of rubber-insulated wire can be seen.Physical property after heat treatment is shown in table l.The nylon 46 solution identical with embodiment 4 being used as surface resin carries out surface and is coated with, and makes the shuttlecock string of a musical instrument.
The evaluation result of the shuttlecock string of a musical instrument of above each embodiment and each comparative example is shown in table l ~ table 2.Being described as follows of statement in table l ~ table 2.
(1) " rubber-insulated wire " Shi Qiaobu strand.
The monofilament that rubber-insulated wire S-1:N6/66 copolymerization, 4 round sections connect
Rubber-insulated wire S-2:N6 (Mitsubishi エ Application プ ラ Inc., " 1035 ") 75wt%, N6/66=80/20 copolymerization (Mitsubishi エ Application プ ラ Inc., " 2430J ": fusing point 190 DEG C) 25wt% blending, the monofilament that 4 round sections connect
(2) " core line " is the flat monofilament of heat molten type.
M-1: low melting point nylon copolymerization, the monofilament that 5 round sections connect
M-2: low melting point nylon copolymerization (N6/12=40/60, Yu Bu nylon Inc., " 7128B ", fusing point 130 DEG C), the monofilament that 5 round sections connect
M-3: by 5 round section long filament single thread 10deci tex doubling
M-4: multifilament, Fujiette company manufactures, " Joiner " 50T-10f (low melting point nylon 130 DEG C)
(3) " low melting point composition " is the low melting point hot melt flat monofilament resinous principle be wound on core.The composition % contained in the string of a musical instrument is the numerical value that in table, core amount of resin (g/m) calculates gained divided by the weight (g/m) of product per unit.But the percentage elongation on length direction is about 3%, does not thus consider.
(4) metewand of the melting of core line
A: fully melting.
B: can melting be seen but insufficient.
C: can't see melting.
(5) surface resin processing
N46 resin: 18wt% nylon/phenol solution
N610 resin: 18wt% nylon/phenol solution
Table 1
Table 2
According to above known following situation..
(1) embodiment 1 ~ 7 is compared with comparative example l, and durability, tension force retentivity, to beat sound excellent.This is because low melting point flat monofilament is wound on heart yearn by embodiment 1, and heating makes the melting of above-mentioned flat monofilament, thus it is integrated heart yearn and Qiao Bu strand to be carried out heat bonding, and on the other hand, comparative example l does not use above-mentioned flat monofilament.
(2) EXAMPLE l ~ 7 compared with comparative example 2 ~ 3 durability, tension force retentivity, to beat sound excellent.This to justify section long filament doubling winding, but be not arranged in flat.
(3) EXAMPLE l ~ 7 compared with comparative example 4 durability, tension force retentivity, to beat sound excellent.This is because comparative example 4 does not make above-mentioned flat monofilament hot melt adhesive, thus cannot realize the integrated of heart yearn and Qiao Bu strand.
(4) confirm EXAMPLE l ~ 7 be loss of tension when the string of a musical instrument being located at racket little, can obtain when playing ball and harder play sense and beat sound and the durable racket string of a musical instrument of height with comfortable.
Utilizability in industry
The string of a musical instrument of the present invention is suitable for shuttlecock, but also useful to the racket of hand-ball tennis, soft tennis, squash etc.
Symbol description
The 1 racket string of a musical instrument
2 heart yearns
3,6,7,8 flat monofilament
4 Qiao Bu strands
5 surface resin layer
10 orthogonal friction test devices
11,12 strings of a musical instrument
Tool fixed by 13a, the 13b string of a musical instrument
14 loads
Claims (15)
1. a racket string of a musical instrument, is characterized in that, it is the racket string of a musical instrument of the braid type comprising the Qiao Bu strand outside heart yearn, described heart yearn and the surface resin layer outside described Qiao Bu strand,
Wherein, the flat monofilament of heat molten type is flattened wound on described heart yearn, and described heart yearn is integrated by heat bonding with Qiao Bu strand.
2. the racket string of a musical instrument according to claim 1, wherein, the ratio of described flat monofilament is 2 ~ 12 % by weight of string of a musical instrument weight.
3. the racket string of a musical instrument according to claim 1 and 2, wherein, by the melting of described flat monofilament, the Qiao Bu strand in outside is also a part of mutually melt bonded state.
4. the racket string of a musical instrument according to any one of claims 1 to 3, wherein, the fusing point of described heart yearn, described Qiao Bu strand and described flat monofilament is expressed from the next,
TM3＜TM2≤TM1
Wherein, TM1 is the fusing point of heart yearn, the fusing point of TM2 Shi Qiaobu strand, and TM3 is the fusing point of flat monofilament.
5. the racket string of a musical instrument according to any one of Claims 1 to 4, wherein, described flat monofilament is be selected from that multiple section circle connects into the shape of row, multiple section circle connects and at least one shape in ganoid concaveconvex shape and elliptical shape.
6. the racket string of a musical instrument according to any one of Claims 1 to 5, wherein, the thickness of described flat monofilament is 0.015 ~ 0.06mm, and flatness and width/thickness are 1.5 ~ 100.
7. the racket string of a musical instrument according to any one of claim 1 ~ 6, wherein, the flat monofilament be wound on described heart yearn is 15 ~ 70% relative to the covering rate on described heart yearn surface.
8. the racket string of a musical instrument according to any one of claim 1 ~ 7, wherein, described flat monofilament is untwisted and be wound on described heart yearn surface.
9. the racket string of a musical instrument according to any one of claim 1 ~ 8, wherein, described heart yearn is multifilament, and the filament number of described Qiao Bu strand is thicker than the filament number of the multifilament of heart yearn, and is 1 monofilament or the long filament for 2 ~ 4 monofilament doublings being obtained.
10. the racket string of a musical instrument according to any one of claim 1 ~ 9, wherein, the filament number of flat monofilament is the scope of 10 ~ 150deci tex.
The manufacture method of 11. 1 kinds of racket strings of a musical instrument, it is characterized in that, the described racket string of a musical instrument is the racket string of a musical instrument of the braid type comprising the Qiao Bu strand outside heart yearn, described heart yearn and the surface resin layer outside described Qiao Bu strand, and the manufacture method of the described racket string of a musical instrument comprises:
The flat monofilament of heat molten type is flattened wound on described heart yearn,
On its surface by Qiao Bu strand band,
The band line processed obtained is heated to the temperature of more than the fusing point of described flat monofilament, makes the melting of described flat monofilament and described heart yearn and Qiao Bu strand to be carried out heat bonding integrated,
Thereafter, surface resin layer is formed in the outside of described Qiao Bu strand.
The manufacture method of the 12. racket strings of a musical instrument according to claim 11, wherein, the temperature of described heat bonding is more than TM3+30 DEG C and less than TM2+15 DEG C, while making described heart yearn and described Qiao Bu strand heat bonding, makes the partial melting bonding each other of described Qiao Bu strand.
The manufacture method of the 13. racket strings of a musical instrument according to claim 11 or 12, wherein, the stretching ratio of described system band line during described heat bonding is 0.95 ~ 1.20 times.
The manufacture method of the 14. racket strings of a musical instrument according to any one of claim 11 ~ 13, wherein, the thickness of described flat monofilament is 0.015 ~ 0.06mm, and flatness and width/thickness are 1.5 ~ 100.
The manufacture method of the 15. racket strings of a musical instrument according to any one of claim 11 ~ 14, wherein, the flat monofilament be wound on described heart yearn is 15 ~ 70% relative to the covering rate on described heart yearn surface, and described flat monofilament is untwisted and be wound on described heart yearn surface.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2013088572 | 2013-04-19 | ||
| JP2013-088572 | 2013-04-19 | ||
| PCT/JP2014/055470 WO2014171203A1 (en) | 2013-04-19 | 2014-03-04 | Racquet string and method for producing same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104918665A true CN104918665A (en) | 2015-09-16 |
| CN104918665B CN104918665B (en) | 2018-03-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201480004749.1A Expired - Fee Related CN104918665B (en) | 2013-04-19 | 2014-03-04 | The racket string of a musical instrument and its manufacture method |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP5593005B1 (en) |
| CN (1) | CN104918665B (en) |
| TW (1) | TWI593446B (en) |
| WO (1) | WO2014171203A1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106317868A (en) * | 2016-08-30 | 2017-01-11 | 安徽翰文运动用品股份有限公司 | String for badminton racket |
| CN109603118A (en) * | 2018-11-27 | 2019-04-12 | 石狮市鸿兴文体器材有限公司 | Racket string and preparation method thereof |
| CN110760967A (en) * | 2019-11-11 | 2020-02-07 | 南通新帝克单丝科技股份有限公司 | Racket string and green preparation method thereof |
| CN110997994A (en) * | 2017-08-18 | 2020-04-10 | 丹麦拉森琴弦公司 | Musical instrument string |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6744627B2 (en) * | 2016-02-24 | 2020-08-19 | ユニチカ株式会社 | String for gut |
| JP2018187163A (en) * | 2017-05-09 | 2018-11-29 | 株式会社ゴーセン | Racket string and manufacturing method thereof |
| JP7104958B2 (en) * | 2017-10-11 | 2022-07-22 | ユニチカ株式会社 | tie |
| JP6722835B1 (en) * | 2018-08-10 | 2020-07-15 | 株式会社ゴーセン | Racket string and manufacturing method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08280850A (en) * | 1995-04-12 | 1996-10-29 | Unitika Ltd | String |
| CN1288083A (en) * | 1999-08-24 | 2001-03-21 | 纳幕尔杜邦公司 | Modificatin of string made of fluorine polymer used for string sports articles and string of stringed instrument |
| CN1395001A (en) * | 2001-07-11 | 2003-02-05 | 耀亿工业股份有限公司 | Abrasion-proof high-elasticity strings structure and its production method |
| CN101130138A (en) * | 2006-08-24 | 2008-02-27 | 高纤股份有限公司 | Fibril of racket thread, racket using the fibril and method of manufacturing the same |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4183200A (en) * | 1977-10-03 | 1980-01-15 | Pepsico, Inc. | Tennis racket string |
| JPS60135150U (en) * | 1984-02-20 | 1985-09-07 | ユニチカ株式会社 | Gatsuto |
-
2014
- 2014-03-04 CN CN201480004749.1A patent/CN104918665B/en not_active Expired - Fee Related
- 2014-03-04 WO PCT/JP2014/055470 patent/WO2014171203A1/en active Application Filing
- 2014-03-04 JP JP2014041719A patent/JP5593005B1/en not_active Expired - Fee Related
- 2014-03-18 TW TW103110081A patent/TWI593446B/en not_active IP Right Cessation
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08280850A (en) * | 1995-04-12 | 1996-10-29 | Unitika Ltd | String |
| CN1288083A (en) * | 1999-08-24 | 2001-03-21 | 纳幕尔杜邦公司 | Modificatin of string made of fluorine polymer used for string sports articles and string of stringed instrument |
| CN1395001A (en) * | 2001-07-11 | 2003-02-05 | 耀亿工业股份有限公司 | Abrasion-proof high-elasticity strings structure and its production method |
| CN101130138A (en) * | 2006-08-24 | 2008-02-27 | 高纤股份有限公司 | Fibril of racket thread, racket using the fibril and method of manufacturing the same |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106317868A (en) * | 2016-08-30 | 2017-01-11 | 安徽翰文运动用品股份有限公司 | String for badminton racket |
| CN110997994A (en) * | 2017-08-18 | 2020-04-10 | 丹麦拉森琴弦公司 | Musical instrument string |
| CN110997994B (en) * | 2017-08-18 | 2022-07-22 | 丹麦拉森琴弦公司 | Strings of musical instruments or strings of sports balls and method for producing same |
| CN109603118A (en) * | 2018-11-27 | 2019-04-12 | 石狮市鸿兴文体器材有限公司 | Racket string and preparation method thereof |
| CN109603118B (en) * | 2018-11-27 | 2021-03-30 | 石狮市鸿兴文体器材有限公司 | Badminton racket string and preparation method thereof |
| CN110760967A (en) * | 2019-11-11 | 2020-02-07 | 南通新帝克单丝科技股份有限公司 | Racket string and green preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2014223279A (en) | 2014-12-04 |
| WO2014171203A1 (en) | 2014-10-23 |
| JP5593005B1 (en) | 2014-09-17 |
| TW201505691A (en) | 2015-02-16 |
| TWI593446B (en) | 2017-08-01 |
| CN104918665B (en) | 2018-03-09 |
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