JP2008184724A - Fabric material for wind sport gear - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a fabric material for wind sport gear, which has high tear strength. <P>SOLUTION: The fabric material for wind sport gear includes a base fabric, wherein at least a part of the base fabric is composed of polyethylene naphthalate fibers. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  TECHNICAL FIELD The present invention relates to a fabric material for sports equipment that winds, and more particularly includes a base fabric having high strength, high modulus, and high tear strength, and includes kite surfing, paragliding, hang riding, yacht sail, and spinnaker. The present invention relates to a fabric material suitable for sports equipment that winds like the above.

In recent years, the competition of guide surfing combined with kite and surfing has increased, and the demand for fabric materials for kite surfing has also increased. As this fabric material, a fabric material obtained by subjecting a polyester fiber fabric to resin processing (Patent Document 1, etc.) is used, but it is torn when a gust blows or when it crashes into the ground such as a sandy beach. There is a need for fabric materials that have a higher tear strength.
Japanese Patent No. 2653919

  An object of the present invention is to provide a fabric material for sports equipment that has a high tear strength and winds.

  As a result of studies by the present inventors, it has been found that the tear strength is remarkably improved in the fabric material for sports equipment using a specific fiber. Thus, according to the present invention, there is provided a fabric material for sports equipment that winds, characterized in that at least a part of the base fabric is composed of polyethylene naphthalate fibers.

  According to the present invention, it is possible to provide a fabric material for sports equipment that has a high tear strength, and when the wind blows from the fabric material or when it crashes into the ground such as a sandy beach, it tears. Difficult sports equipment can be manufactured.

  The fabric material for sports equipment that winds of the present invention is a fabric material for sports equipment including a base fabric. In the present invention, it is essential that at least a part of the base fabric is composed of polyethylene naphthalate fibers.

  That is, in the present invention, it is not necessary for the base fabric to be entirely made of polyethylene naphthalate fiber, and it is only necessary that a part of the base fabric is composed of the fiber, thereby improving the tear strength and improving the wind. It has been found that a fabric material for sports equipment can be obtained. Other yarns are not particularly limited, and polyester fibers such as polyethylene terephthalate fiber, polytrimethylene terephthalate fiber, polybutylene terephthalate fiber, polyamide fibers such as nylon 6 and nylon 66, polyolefin fibers such as polyethylene fiber, Aramid fibers may be used, but polyethylene terephthalate fibers are particularly desirable. Further, the mixing ratio of the polyethylene naphthalate fiber to the entire base fabric is not particularly limited, but is preferably 3% by weight or more.

  Here, the polyethylene naphthalate fiber is a fiber obtained by subjecting a polyethylene naphthalate polymer represented by polyethylene-2,6-naphthalate (PEN) to an ordinary spinning drawing method, and the polyethylene naphthalate is The polymer may contain 90% by mole or more of an ethylene-2,6-naphthalate unit, and may be a polymer containing an appropriate third component at a ratio of 10% by mole or less.

  In general, polyethylene-2,6-naphthalate can be synthesized by polycondensation of naphthalene-2,6-dicarboxylic acid or an ester-forming derivative thereof with ethylene glycol in the presence of a catalyst under appropriate reaction conditions. it can. At this time, if one or more third components are added before the polymerization of polyethylene-2,6-naphthalate is completed, a copolymer is synthesized.

Suitable third components include compounds having two ester-forming functional groups; for example, aliphatic dicarponic acids such as succinic acid, adipic acid, sebacic acid, and dimer acid; aliphatic monodicarboxylic acids such as hexahydroterephthalic acid; Aromatic dicarboxylic acids such as phthalic acid, isophthalic acid, naphthalene-2,7-dicarponic acid, diphenyldicarponic acid; Dicarponic acid such as sodium sulfonate; Glycolic acid, p-oxybenzoic acid, oxycarponic acid such as p-oxyethoxybenzoic acid; trimethylene glycol, diethylene glycol, tetramethylene glycol, hexamethylene glycol, neopentylene glycol p-xylylene glycol, 1,4-cyclohexanedimethanol, bisphenol A, p, p′-dihydroxydiphenylsulfone, 1,4-pis (β-hydroxyethoxy) benzene, 2,2-pis (p-β-hydroxy) And ethoxyphenyl) propane.
Needless to say, the polyethylene naphthalate may contain a matting agent such as titanium dioxide and a stabilizer such as phosphoric acid, phosphorous acid and esters thereof.

  The intrinsic viscosity of polyethylene naphthalate is preferably 0.65 dL / g or more, particularly preferably in the range of 0.7 to 1.0 dL / g. The intrinsic viscosity here is a value obtained from the viscosity measured at 35 ° C. by dissolving the polymer or undrawn yarn before drawing in a mixed solvent of phenol and orthodichlorobenzene (volume ratio 6: 4). When the intrinsic viscosity is less than 0.65 dL / g, it is difficult to obtain high-strength and high-toughness yarn quality fibers required as the base fabric fiber of the present invention. On the other hand, if it exceeds 1.0 dL / g, the spinning process tends to be poor, which is undesirable in practice.

  The form of the polyethylene naphthalate fiber may be either a multifilament or a short fiber, and may be a spun yarn containing the short fiber. A preferred form is a multifilament having a relatively high strength.

  Further, the shape of the cross section of the fiber may be either solid or hollow, and may be either circular or irregular. Among these, fibers having a hollow portion, particularly hollow fibers having a hollow ratio of 20 to 50%, occupy 50% by weight or more of the fibers constituting the base fabric, and the resulting fabric material for sports equipment that captures the wind is an excellent lightweight. In addition to exhibiting properties, wrinkles are less likely to occur, which is preferable because fatigue deterioration and cracking of the resin layer due to concentration of stress on the wrinkles are suppressed, and durability for use is improved.

  Furthermore, the fineness of the polyethylene naphthalate fiber is in the range of 1 to 25 decitex, from the viewpoint of the strength when used as a fabric material for sports equipment that captures the wind and the handleability in the process of manufacturing the base fabric. The range of 2 to 15 dtex is particularly preferable. Further, for the same reason as the single fiber fineness, the total fineness when the polyethylene naphthalate fiber is a multifilament or spun yarn is preferably in the range of 30 to 2500 dtex, particularly 50 to 1500 dtex.

Next, any form such as a woven fabric, a knitted fabric, and a non-woven fabric can be adopted as the form of the base fabric, but the base fabric having a good balance between the warp direction and the weft direction is a woven fabric, particularly a plain woven fabric.
In the present invention, the base fabric comprises a main constituent yarn and a thick fine yarn for reinforcing the base fabric, and the fineness of the thick fine yarn is 2 to 5 times the fineness of the main constituent yarn. Preferably there is.

  The thick fine yarn may be composed of 2 to 5 main yarns or a twisted yarn. Such a high-definition yarn is used as a reinforcing material for the base fabric, and exhibits a remarkable resistance effect against deformation, breakage, and tearing of the base fabric.

  When the fineness of the thick fine yarn is less than twice that of the main constituent yarn, the reinforcing effect of the thick fine yarn becomes insufficient, and when it becomes greater than 5 times, the thick fine yarn Although the reinforcing effect is increased, the flexibility of the obtained base fabric tends to be lowered.

  Furthermore, in this invention, it is preferable that the said high fineness thread | yarn is comprised with the polyethylene naphthalate fiber. For example, if the thick yarn of the base fabric according to claim 2 is a polyethylene naphthalate fiber, the effect of the present invention can be sufficiently exhibited even if the other portion is a fiber other than the polyethylene naphthalate fiber. it can.

Further, the basis weight of the base fabric is preferably 10 g / m ² or more from the viewpoint of maintaining the strength of the base fabric, and is preferably 150 g / m ² or less from the viewpoint of maintaining the flexibility of the base fabric. More preferably, the fabric weight of a base fabric is 20-50 g / m < ² >.

  Next, in order to lower the air permeability and improve the dimensional stability, it is preferable to coat the base fabric with a resin. As the resin for covering the base fabric, known resins such as polyurethane resin, silicone resin, and polyvinyl chloride resin can be arbitrarily used, but all are preferably selected from those excellent in flexibility and durability. .

Next, a method for coating the above-described base fabric with resin will be described. The fabric material for sports equipment that winds of the present invention can be obtained by laminating and impregnating the above-mentioned resin on the above-mentioned base fabric made of polyethylene naphthalate fiber. As for the lamination or impregnation method, means well known in the art may be employed. For example, a method of applying a polyurethane resin or the like to the surface of the base fabric is preferable.
The amount of resin applied to the base fabric is preferably 50 g / m ² or less from the viewpoint of flexibility, and preferably 2 g / m ² or more from the viewpoint of waterproofness. More preferably, it is 5-20 g / m < ² >.

  The tear strength of the fabric material thus obtained is desirably 2.0 kg or more (measured by the single tongue method) or more, and in the case of less than 2.0 kg, a sports equipment made from the fabric material, for example, kite In surfing, there is a high risk of tearing when wind is applied and high wind pressure is applied.

EXAMPLES Hereinafter, although an Example demonstrates this invention further in detail, this invention is not limited at all by these. In addition, each characteristic value in an Example followed the following measuring method.
(1) Tear strength Measured by JIS L-1096 single tongue method.
(2) Breathability Based on JIS L-1096-79-6.27 Breathability A method, it measured using the Frazier type air flow rate measuring device.

[Example 1]
A plain woven fabric (density 110 / inch, basis weight 40 g / m ² ) using polyethylene naphthalate multifilament (PEN) 44 Tetex, manufactured by Teijin Techno Products Co., Ltd., and 20 filaments was prepared. The resulting woven fabric machine was subjected to refining, presetting, and dyeing processes in a conventional manner, and then heat treated under predetermined conditions. The resulting fabric polyurethane-based resin was coated at a coverage of from 10 g / m ² to obtain a woven fabric material having a basis weight of 50 g / m ^2. The air permeability of this fabric material was 0.02 cm ³ / cm ² / sec or less.

[Example 2]
In the flat fiber, 18 units of 44 nacitrate multifilaments (main constituent yarns) of 44 decitex and 20 filaments in both warp and weft are arranged, and then 44 decitex and 20 filaments of polyethylene nails are arranged. Example 1 except that one thick yarn (yarn for reinforcing base fabric) obtained by combining three phthalate multifilament yarns is arranged, and the unit structure is made into a woven fabric that repeats sequentially. As well as.

[Example 3]
The same procedure as in Example 2 was performed except that the main constituent yarn was changed to polyethylene terephthalate multifilament (PET) “Tetron” 44 dtex, 20 filaments manufactured by Teijin Techno Products Co., Ltd. The results are shown in Table 1.

[Comparative Example 1]
The same procedure as in Example 1 was performed except that the polyethylene naphthalate multifilament (PEN) was changed to a polyethylene terephthalate multifilament (PET) “Tetron” (44 dtex, 20 filaments) manufactured by Teijin Techno Products Limited. The results are shown in Table 1.

[Comparative Example 2]
The main constituent yarn is polyethylene terephthalate multifilament (PET) “Tetron” (44 decitex, 20 filament) manufactured by Teijin Techno Products Co., Ltd. The base fabric reinforcing yarn is polyethylene terephthalate multi manufactured by Teijin Techno Products Co., Ltd. The same procedure as in Example 2 was performed except that the filament (PET) “Tetron” (44 dtex, 20 filaments) was changed to one thick yarn obtained by combining three yarns. The results are shown in Table 1.

  ADVANTAGE OF THE INVENTION According to this invention, the fabric material for sports equipment which can wind which has high tear strength can be provided. For this reason, the fabric material can be suitably used for sports equipment that winds, such as kite surfing, paraglider, hang rider, yacht sale, spinnaker and the like.

Claims (3)

  A fabric material for sports equipment including wind, wherein at least a part of the base fabric is composed of polyethylene naphthalate fibers.   The said base fabric consists of a main constituent yarn and a thick fine yarn for reinforcing base fabric, and the fineness of the thick fine yarn is 2 to 5 times the fineness of the main constituent yarn. A fabric material for sports equipment that includes the described wind.   The cloth material for sports equipment which winds of Claim 2 with which the said high-definition yarn for base fabric reinforcement is comprised with the polyethylene naphthalate fiber.