WO2018207418A1 - Corde de raquette et son procédé de production - Google Patents

Corde de raquette et son procédé de production Download PDF

Info

Publication number
WO2018207418A1
WO2018207418A1 PCT/JP2018/004719 JP2018004719W WO2018207418A1 WO 2018207418 A1 WO2018207418 A1 WO 2018207418A1 JP 2018004719 W JP2018004719 W JP 2018004719W WO 2018207418 A1 WO2018207418 A1 WO 2018207418A1
Authority
WO
WIPO (PCT)
Prior art keywords
yarn
string
resin layer
sheath
racket
Prior art date
Application number
PCT/JP2018/004719
Other languages
English (en)
Japanese (ja)
Inventor
海江田佳
坂本樹
大原淑行
Original Assignee
株式会社ゴーセン
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 株式会社ゴーセン filed Critical 株式会社ゴーセン
Publication of WO2018207418A1 publication Critical patent/WO2018207418A1/fr

Links

Images

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
    • 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
    • D02G3/36—Cored or coated yarns or threads
    • 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
    • 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
    • D06M15/37—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • D06M15/564—Polyureas, polyurethanes or other polymers having ureide or urethane links; Precondensation products forming them
    • 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
    • D06M15/37—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • D06M15/59—Polyamides; Polyimides

Definitions

  • the present invention relates to a synthetic string for rackets such as badminton, tennis and squash.
  • the present invention relates to a racket string having a low frictional resistance suitable for badminton and high durability.
  • Patent Documents 1 and 2 for coating a resin solution dissolved in a solvent as a surface resin have a problem in terms of environment because of the use of a solvent, and also have a problem that the surface is smooth and the frictional resistance value is increased.
  • the electron beam cross-linking method of the surface resin disclosed in Patent Document 3 has a problem that the surface is smooth and the frictional resistance value is increased.
  • the present invention provides a string for a racket having a low frictional resistance value and high durability in order to solve the conventional problems.
  • the racquet string of the present invention is a racquet string including a core yarn, a sheath yarn outside the core yarn, and a surface resin layer outside the sheath yarn, wherein the core yarn and the sheath yarn are core yarns. It is integrated by fusing hot melt yarn interposed on the surface, the resin of the surface resin layer is a thermoplastic resin that does not contain a solvent, and the surface of the surface resin layer has an uneven shape along the sheath yarn Is formed.
  • the method for producing a string for a racket according to the present invention is a method for producing the above-described string for a racket, wherein a hot melt yarn is wound around a core yarn, and a sheath yarn is wound or wound around the surface of the core yarn. Heating to a temperature equal to or higher than the melting point, melting the hot melt yarn to thermally bond and integrate the core yarn and sheath yarn, and extruding a thermoplastic resin free of solvent outside the sheath yarn in a molten state Forming a surface resin layer, and then performing a surface treatment at a temperature equal to or higher than the melting point of the surface resin layer.
  • the surface of the surface resin layer has a rugged shape formed along the sheath yarn, so that the racquet string has a low frictional resistance value and high durability.
  • a thermoplastic resin that does not contain a solvent is extruded outside the sheath yarn in a molten state to form a surface resin layer, and then surface treatment (annealing treatment) at a temperature equal to or higher than the melting point of the surface resin layer.
  • surface treatment annealing treatment
  • the surface resin is softened or melted to form a concavo-convex shape along the sheath yarn, crystallized upon cooling to become a glossy surface
  • the surface resin surface has a low frictional resistance value and high durability It can be a racket string.
  • a tension loss when the string is stretched on the racket is small, a relatively hard feel and a comfortable hitting sound can be obtained at the time of hitting the ball, and a highly durable racket string can be provided.
  • FIG. 1 is an exploded perspective view of a racket string in one embodiment of the present invention.
  • 2A-C are cross-sectional views of a flat monofilament in one embodiment of the present invention.
  • FIG. 3 is a schematic explanatory view of the orthogonal friction test apparatus used in the embodiment of the present invention.
  • FIG. 4A is a schematic perspective view of a friction test apparatus on a string stretched on a racket used in the embodiment of the present invention, and
  • FIG. 4B is a cross-sectional view thereof.
  • FIG. 5 is an exploded perspective view of a racket string in a comparative example.
  • FIG. 6 is a friction force comparison graph between Example 1 and Comparative Example 1 of the present invention.
  • the string for a racket according to the present invention includes a core yarn, a sheath yarn outside the core yarn, and a surface resin layer outside the sheath yarn.
  • the core yarn and the sheath yarn are integrated by fusing hot melt yarn interposed on the surface of the core yarn.
  • the resin of the surface resin layer is a thermoplastic resin that does not contain a solvent, and the surface of the surface resin layer has an uneven shape along the sheath yarn. This unevenness is a surface treatment (annealing treatment) at a temperature equal to or higher than the melting point of the surface resin layer, so that the surface resin is softened or melted and partially soaked into the sheath yarn, resulting in an uneven shape along the sheath yarn. It is.
  • the sheath yarn is preferably braided yarn or wound yarn.
  • the braided yarn partially soaks into the sheath yarn, and a clear uneven shape tends to appear along the braided yarn.
  • a wound yarn it may be S twist or Z twist, or S twist and Z twist.
  • the surface of the surface resin layer preferably has a gloss.
  • the glossiness is because the surface resin is crystallized, and heat treatment to such an extent that the surface resin is crystallized is preferable.
  • the resin of the surface resin layer is preferably at least one selected from nylon resin and polyurethane resin. This is because nylon resin and polyurethane resin have good adhesion to the sheath yarn and are difficult to peel off.
  • the uneven shape on the surface of the surface resin layer is preferably such that the difference in height of the unevenness is 1 to 100 ⁇ m, more preferably 2 to 50 ⁇ m, particularly preferably 3 to 30 ⁇ m. With this degree of unevenness, the frictional resistance is low.
  • the abundance of the surface resin layer is preferably in the range of 5 to 22% by mass when the string is 100% by mass. More preferably, it is in the range of 5 to 15% by mass. If it is the said range, protection of a core yarn and a sheath yarn can fully be performed.
  • the hot melt yarn is preferably a flat monofilament yarn.
  • Racket string is preferably a flat monofilament yarn.
  • the manufacturing method of the string for rackets of this invention includes the following processes. (1) A process in which hot melt yarn is wound around a core yarn, and sheath yarn is wound or wound around the surface (string yarn assembling step). (2) A process of heating to a temperature equal to or higher than the melting point of the hot melt yarn to melt the hot melt yarn and thermally bonding and integrating the core yarn and the sheath yarn (first heat treatment step) (3) A step of extruding a thermoplastic resin not containing a solvent outside the sheath yarn in a molten state to form a surface resin layer (extrusion step) (4) Thereafter, surface treatment at a temperature equal to or higher than the melting point of the surface resin layer (second heat treatment step)
  • the temperature of the surface treatment is preferably in the range of the melting point (Tm ° C.) of the surface resin layer to Tm + 25 ° C., more preferably in the range of Tm ° C. to Tm + 15 ° C. If it is the said temperature range, surface resin will soften or fuse
  • Tm ° C. melting point
  • An embodiment of the present invention is a braided string racket string including a core yarn, an outer sheath braid and an outer surface resin layer, and a hot melt flat monofilament is spirally formed on the core yarn.
  • the core yarn and the sheath braid are integrated by thermal bonding.
  • the proportion of the flat monofilament is preferably in the range of 2 to 12% by mass when the string mass is 100% by mass. More preferably, it is 2.5 to 8% by mass. If it is the said range, a thin and highly powerful string can be obtained.
  • the outer sheath braid is partially fused to each other by melting the flat monofilament. .
  • the sheath braids are also bonded to each other, so that the hitting sound and the durability can be improved.
  • the melting points of the core yarn, the sheath braid and the flat monofilament are preferably represented by the following formula. With the following formula, it is possible to prevent a decrease in strength of the core yarn and the sheath braid when the flat monofilament is thermally melted, and to obtain a thin and high-strength string.
  • TM3 ⁇ TM2 ⁇ TM1 melting point of core yarn
  • TM2 melting point of sheath braid
  • TM3 melting point of flat monofilament.
  • a hot-melt flat monofilament is spirally wound around a core yarn, a sheath braid is formed on the surface of the core yarn, and the obtained string is used as a flat monofilament.
  • Heating to a temperature equal to or higher than the melting point (TM3), the core yarn and the sheath braid are integrated by thermal bonding by melting the flat monofilament.
  • the temperature for thermal bonding is preferably TM3 + 30 ° C. or higher and TM2 + 15 ° C. or lower. More preferably, the temperature is TM3 + 40 ° C. or higher and TM2 + 10 ° C. or lower. If it is the said range, a core thread and a sheath part braid can be heat-bonded, and also a sheath part braid can be partly melted.
  • the draw ratio of the string yarn during heat bonding is preferably 0.95 to 1.20 times.
  • a more preferable draw ratio is 1.00 to 1.10 times.
  • the thickness of the flat monofilament is preferably 0.015 to 0.06 mm, more preferably 0.02 to 0.05 mm.
  • the flatness (width / thickness) of the flat monofilament is preferably 1.5 to 100, more preferably 2.5 to 80. If the thickness and flatness of the flat monofilament are within the above ranges, the core yarn and the sheath braid can be thermally bonded and the sheath braid can be partially fused.
  • the coverage of the flat monofilament wound around the core yarn on the surface of the core yarn is preferably 15 to 70%, more preferably 20 to 50%. Within this range, the core yarn and the sheath braid can be thermally bonded and the sheath braid can be partially fused.
  • the cross-sectional shape of the flat monofilament wound around the core yarn is preferably a flat shape having irregularities. If the cross-sectional shape is uneven, when the sheath monofilament is laced from the flat monofilament wrapped around the core yarn, friction can be generated to produce a strong string, and the adhesive strength can be increased with a small amount. is there.
  • the core yarn material is not particularly limited, but is preferably a high-strength polyamide filament yarn.
  • Polyamides include nylon 6, nylon 66, nylon 610, nylon 612, nylon 46, nylon 56, nylon 410, nylon 12 and other aliphatic polyamide resins, nylon 9T, nylon MXD6, nylon 6T and other semi-aromatic polyamide resins. Is mentioned. Particularly preferred are high-strength multifilament yarns of nylon 6 and nylon 66. High-strength polyamide yarns are generally known for industrial materials such as tire cords.
  • the preferred single yarn fineness of the core yarn is 2 to 10 decitex, and the total fineness is 1500 to 7000 decitex.
  • the preferred number of filaments constituting the core yarn is 150-3500.
  • TM1 When the melting point of the core yarn is TM1, TM1 is preferably 170 ° C. or higher, more preferably 200 ° C. or higher. In the present invention, the melting point is a value indicated by a peak temperature when measured with a differential scanning calorimeter (DSC) at a heating rate of 20 ° C./min.
  • DSC differential scanning calorimeter
  • the physical properties of the core yarn greatly affect the physical properties of the string.
  • a preferred multifilament has a strength of 5.0 to 12.0 cN / decitex and an elongation of about 16 to 25%.
  • the core yarn can be used together or mixed with other filaments as required.
  • the core yarn is preferably twisted and used in view of the bundle bundle's converging property, roundness, elongation, etc., and the twist number is preferably about 30 to 300 times / m.
  • Resin processing may be performed with an adhesive resin in order to enhance the adhesion between the core yarns and to impart an appropriate hardness to the core yarns.
  • a low-melting-point heat-adhesive fiber can be mixed with the core yarn.
  • the sheath braid (melting point: TM2)
  • a filament made of a resin having a melting point which is preferably the same as or lower than the melting point of the core yarn and higher than the low melting point resin wound around the core is used.
  • the same polyamide-based resin as that of the core yarn is preferably exemplified. Examples thereof include aliphatic polyamides such as nylon 6, nylon 66, nylon 610, nylon 612, nylon 46, nylon 56, nylon 410, nylon 11, and nylon 12. These copolyamides are preferably used.
  • the core yarn component is nylon 66 or nylon 6, nylon 6, nylon 6/66 copolymer, nylon 6/12 copolymer or the like is used as a preferable sheath braid. Further, it may be a filament obtained by blending about 5 to 80% of copolymer nylon having a low melting point with nylon 6.
  • the sheath braid it is preferable that the single yarn fineness is larger than the single filament fineness of the multifilament of the core yarn, and it is preferable to use one monofilament or a filament in which about 2 to 4 monofilaments are arranged as the braid.
  • the cross-sectional shape of a filament can use an ellipse or a flat cross section.
  • a connected cross-section filament disclosed in Japanese Patent Application Laid-Open No. 2008-48867 filed by the present applicant is also preferably used.
  • the preferred single yarn fineness of the sheath braid is about 10 to 100 decitex. It is preferable to use 8 to 32 braids of this single yarn fineness to form a string to form a sheath.
  • a hot melt type flat monofilament is wound around the outside of the core yarn in a spiral, and then the sheath braid is made.
  • a known method can be adopted for the string making. For example, it is preferable to use a 16-placing machine.
  • the step of winding the flat monofilament and the step of forming the sheath braiding may be separate steps or may be continued.
  • a material having a lower melting point than that of the filament yarn of the core yarn and the sheath braid and having good adhesion to the constituent filament fiber of the core yarn and the braid of the sheath portion is preferably used.
  • a preferable melting point (TM3) is 100 ° C. to 180 ° C., and a resin having a melting point lower than that of a resin of TM3 ⁇ TM2 ⁇ TM1, that is, a core yarn fiber and a sheath braided fiber is selected.
  • Such resins include copolymerized polyamide resins and polyurethane resins obtained by copolymerizing two or more selected from aliphatic nylons such as nylon 6, nylon 66, nylon 12, nylon 11, nylon 610, and nylon 612. Can be mentioned. More preferably, the resin is lower by 30 ° C. or more than the melting point of the sheath braided fiber.
  • 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 and the like can be mentioned, but the copolymer is not limited to these, and can be appropriately selected from known copolymer nylon as a heat-fusible resin and a heat-fusible fiber.
  • the amount and the applied state of the adhesive component are important as described above, and sufficient adhesiveness is obtained. It is important to reduce the applied amount as much as possible while applying the. For this reason, a flat monofilament is used as the form of the material to be wound. In the case of a multi-fragment with a large number of filaments, it is difficult to uniformly control the thickness and width of the yarn in the wound state, and it is not preferable because a portion having a large string diameter or a void is formed.
  • the preferred single yarn fineness of the flat monofilament is 10 to 150 decitex. A more preferable single yarn fineness is 20 to 100 decitex.
  • a flat monofilament is preferably wound spirally around a core thread, but a plurality of bobbins may be used for winding.
  • the core yarn and the sheath braid are heat bonded and integrated, and then a surface resin layer is formed on the outside of the sheath braid.
  • the surface resin layer is formed by dipping or melt coating a nylon resin dissolved in a solvent.
  • Nylon resin is not particularly limited, but aliphatic polyamides such as nylon 6, nylon 66, nylon 46, nylon 610, nylon 612, nylon 11 and nylon 12, and their copolyamides and semi-aromatic polyamides such as nylon 9T can be used. . Dipping or coating can improve color, appearance, durability, and the like. Furthermore, coloring, heat treatment, printing, oiling and the like can be performed as necessary.
  • FIG. 1 is an exploded perspective view of a racket string 1 according to an embodiment of the present invention.
  • a hot-melt flat monofilament 3 is spirally wound around a core yarn 2, and the core yarn 2 and the sheath braid 4 are integrated by thermal bonding.
  • FIG. 1 shows the shape of the three flat monofilaments before melting.
  • a surface resin layer 5 is formed on the surface of the sheath braid 4. The surface resin layer 5 is partially immersed in the sheath braid 4 and has an uneven shape along the sheath thread.
  • the core yarn 2 is an example of a multifilament, but it may be a monofilament.
  • the number of multifilaments can also be arbitrarily selected.
  • the sheath braiding 4 is an example of a 4-connected monofilament having a circular cross section, but it may be 2-8 connected. Alternatively, 2 to 4 monofilaments may be arranged in parallel.
  • the flat monofilament is preferably at least one selected from a shape in which a plurality of cross-sectional circles are connected in a row, a concavo-convex shape in which a plurality of cross-sectional circles are connected and the surface is smooth, and an oval shape.
  • FIGS. 2A-C show a flat monofilament 6 having five cross-sectional circles connected, and the flatness L / D is about 5.
  • L shows a width
  • FIG. 2B shows a flat monofilament 7 having an uneven surface.
  • FIG. 2C shows an oblong flat monofilament 8 having no irregularities on the surface.
  • FIG. 5 is an exploded perspective view of the racket string in the comparative example. The difference from FIG. 1 is that the surface of the surface resin layer 5 is smooth.
  • FIG. 4A is a schematic perspective view of a friction test apparatus 15 on a string stretched on a racket used in an embodiment of the present invention
  • FIG. 4B is a cross-sectional view thereof.
  • the string 17 was lifted to the racket 16 at 25 pounds
  • a shuttle cork 18 was placed on the surface of the string 17, and a 500 g weight 19 was placed thereon.
  • a chuck (hook) 20 was attached to the side surface of the shuttle cork 18 and the string 21 was hung and pulled in the direction of the arrow 22 at a speed of 100 mm / min.
  • the shuttle was pulled with an autograph (Shimadzu Corporation), and the frictional resistance was measured.
  • Example 1 The badminton string was manufactured in the next step.
  • Core yarn As the core yarn, a filament yarn (melting point 260 ° C., fineness of 1400 decitex and 940 decitex, total fineness of 2340 decitex) manufactured by Toray Industries, Inc., Z twist 120 times / m Thread was used. A nylon emulsion was adhered to the core yarn at an adhesion rate of 6 to 12% by mass.
  • Hot-melt flat monofilament and winding process A shape in which five cross-sectional circles are connected as shown in FIG. 2A using Ube Industries, Ltd., low-melting point copolymer nylon, product name “7128B” (melting point 130 ° C.) A flat monofilament was prepared by melt spinning.
  • One flat monofilament was spirally wound around the core yarn surface.
  • the winding machine was attached to the core yarn supply part of the string making machine, and the winding and string making were continuously performed.
  • a total of 16 monofilaments were used one by one, and the flat monofilament was spirally wound around the surface of the core yarn with a round 16 punching machine.
  • (4) Thermal bonding process (first heat treatment process) The string after the stringing was heat-treated for 40 seconds with a hot air drying apparatus having a temperature of 215 ° C. The draw ratio was 1.03. By this heat treatment, the low melting point flat monofilament was melted, and the core yarn and the sheath braid were thermally bonded and integrated.
  • the amount of the surface resin layer applied was 0.0623 g / m, and the ratio when the string was 100% by mass was 13.8% by mass.
  • (6) Surface heat treatment step (second heat treatment step) The string on which the surface resin layer was formed was heat-treated for 40 seconds with a hot air dryer at a temperature of 215 ° C. to obtain a string for badminton. An exploded perspective view of the obtained string is shown in FIG. However, for easy understanding of the structure, the core winding state in FIG. 1 shows the winding state before the heat treatment. Conditions and results are summarized in Tables 1 and 2.
  • FIG. 5 shows an exploded perspective view of the obtained string.
  • the surface of the surface resin layer 5 was smooth.
  • the core winding state in FIG. 5 shows the winding state before the heat treatment.
  • the result of the friction test of the strings of Example 1 and Comparative Example 1 is shown in FIG.
  • the frictional force of Example 1 was low. That is, when the surface heat treatment step (second heat treatment step), a part of the resin film coated in advance penetrates into the braid of the sheath part, and the resin film becomes uneven along the braid, and the friction resistance is increased. Lower. As a result, the string was easily misaligned, the spin was applied well, the shot feeling was soft, and the durability was good.
  • Example 2 The experiment was performed in the same manner as in Example 1 except for the following items.
  • a nylon 6 and nylon 66 copolymer nylon made by DSM, trade name “1020J”, nylon 6; melting point 220 ° C.
  • a monofilament was made and used.
  • Second heat treatment step heat treatment was performed for 40 seconds with a hot air drying apparatus having a temperature of 225 ° C. The obtained string was spun well, the feel at impact was soft, and the durability was good.
  • Example 3 The experiment was performed in the same manner as in Example 1 except for the following items.
  • a filament yarn (melting point 260 ° C., total fineness 2100 decitex) made by Toray Industries, Inc., trade name “Promiran” (nylon 66) was used with a Z twist of 150 times / m.
  • the mass of the string before coating was 0.3603 g / m
  • the mass of the string after coating was 0.4240 g / m.
  • the amount of the surface resin layer applied was 0.0637 g / m, and the ratio when the string was 100% by mass was 15.0% by mass.
  • the obtained string was spun well, the feel at impact was soft, and the durability was good.
  • Example 4 The experiment was performed in the same manner as in Example 3 except for the following items.
  • a nylon 6 and nylon 66 copolymer nylon made by DSM, trade name “1020J”, nylon 6; melting point 220 ° C.
  • a monofilament was made and used.
  • Second heat treatment step heat treatment was performed for 40 seconds with a hot air drying apparatus having a temperature of 225 ° C. The obtained string was spun well, the feel at impact was soft, and the durability was good.
  • Tables 1 and 2 The above conditions and results are summarized in Tables 1 and 2.
  • the string of each example and comparative example was stretched on a badminton racket and subjected to a ball hitting test.
  • the strings of examples 1 to 4 were superior in durability, tension retention, and hitting sound as compared with comparative example 1. .
  • the string of the present invention is suitable for badminton.
  • it is useful for rackets such as hard tennis, soft tennis and squash.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Mechanical Engineering (AREA)
  • 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)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
  • Multicomponent Fibers (AREA)

Abstract

La présente invention concerne une corde de raquette comprenant un fil d'âme 2, des fils de gaine 4 disposés à l'extérieur de celui-ci, et une couche de résine de surface 5 disposée à l'extérieur de celui-ci. Le fil d'âme 2 et les fils de gaine 4 sont intégrés par liaison par fusion d'un fil thermofusible 3 interposé sur la surface du fil d'âme 2. La résine dans la couche de résine de surface 5 est une résine thermoplastique exempte de solvant. La couche de résine de surface 5 a, sur sa surface, des saillies et des renfoncements formés le long des fils de gaine 4. Les fils de gaine 4 sont de préférence des tresses ou des fils enveloppants. La différence de hauteur entre les saillies et les renfoncements sur la surface de la couche de résine de surface 5 est de préférence dans la plage de 1 à 100 µm. Sur la base des caractéristiques mentionnées ci-dessus, l'invention concerne une corde de raquette qui a une faible résistance au frottement et une durabilité élevée.
PCT/JP2018/004719 2017-05-09 2018-02-09 Corde de raquette et son procédé de production WO2018207418A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2017-093201 2017-05-09
JP2017093201A JP2018187163A (ja) 2017-05-09 2017-05-09 ラケット用ストリング及びその製造方法

Publications (1)

Publication Number Publication Date
WO2018207418A1 true WO2018207418A1 (fr) 2018-11-15

Family

ID=64104702

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2018/004719 WO2018207418A1 (fr) 2017-05-09 2018-02-09 Corde de raquette et son procédé de production

Country Status (3)

Country Link
JP (1) JP2018187163A (fr)
TW (1) TW201900249A (fr)
WO (1) WO2018207418A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021009052A1 (fr) * 2019-07-12 2021-01-21 Speed France Sas Corde monofilament destinée à une raquette
JP2021029532A (ja) * 2019-08-22 2021-03-01 東レ株式会社 ラケットストリングス用ポリアミドマルチフィラメント
JP7333039B2 (ja) 2020-02-19 2023-08-24 ヨネックス株式会社 ラケット用ストリング

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6284472U (fr) * 1985-11-14 1987-05-29
JPH08500034A (ja) * 1992-07-30 1996-01-09 プリンス マニュファクチュリング インコーポレーテッド スポーツ用合成ストリング
US6062014A (en) * 1999-01-07 2000-05-16 Yeh; Yueh-Jui String for a racket
JP5593005B1 (ja) * 2013-04-19 2014-09-17 株式会社ゴーセン ラケット用ストリング及びその製造方法

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6284472U (fr) * 1985-11-14 1987-05-29
JPH08500034A (ja) * 1992-07-30 1996-01-09 プリンス マニュファクチュリング インコーポレーテッド スポーツ用合成ストリング
US6062014A (en) * 1999-01-07 2000-05-16 Yeh; Yueh-Jui String for a racket
JP5593005B1 (ja) * 2013-04-19 2014-09-17 株式会社ゴーセン ラケット用ストリング及びその製造方法

Also Published As

Publication number Publication date
TW201900249A (zh) 2019-01-01
JP2018187163A (ja) 2018-11-29

Similar Documents

Publication Publication Date Title
JP5593005B1 (ja) ラケット用ストリング及びその製造方法
KR101576509B1 (ko) 단섬유를 포함하는 심초구조의 낚시줄
US4055941A (en) Integrated string
WO2018207418A1 (fr) Corde de raquette et son procédé de production
WO1990015193A1 (fr) Gazon artificiel, fil a poils pour gazon artificiel et procede et filiere pour la production dudit gazon
JP4223524B2 (ja) ラケット用ストリング及びその製造方法
JP4695291B2 (ja) 低伸度糸
US4586708A (en) Sports racket strings of a synthetic thermoplastic polymeric material
JP6722835B1 (ja) ラケット用ストリング及びその製造方法
JP2016077743A (ja) ラケット用ストリング
JP6005431B2 (ja) ラケット用ストリング
JP4713692B2 (ja) ラケット用ストリングとその製造方法及びこれを張設したラケット
JP2002266183A (ja) ポリオレフィン系フィラメント糸とポリアセタールフィラメント糸とからなる糸条
JP2006345963A (ja) ストリング
JP6744627B2 (ja) ガット用ストリング
JP4754095B2 (ja) テーパー状マルチフィラメント糸条およびその製造方法
JPS61146832A (ja) ポリオキシメチレン撚糸体
JP3628266B2 (ja) ラケット用合成ストリング
JP6706506B2 (ja) 造形材料
JPH026543B2 (fr)
JPH06238014A (ja) ラケットフレーム
JP2006325717A (ja) ストリングス
JP2015051051A (ja) ラケット用ストリング
JPH0796053A (ja) ストリング
JPH06170872A (ja) 熱可塑性コンポジットラケットおよびその製造方法

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 18798658

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 18798658

Country of ref document: EP

Kind code of ref document: A1