JP2008297633A - Composite yarn thread - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a composite thread yarn suitable for gloves especially excellent in cut wound-preventing property, and workability and comfortability in wearing, and gloves constituted by the composite yarn thread. <P>SOLUTION: This composite yarn thread is provided by covering a core part constituted by a metal fiber with a fiber constituted by polyketone of which ≥95 mol% of its repeating unit is expressed by formula (1): -CH<SB>2</SB>-CH<SB>2</SB>-CO-. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a composite yarn, particularly a composite yarn suitable for a glove excellent in cut cutting prevention, and provides a glove that is soft and excellent in workability and comfort during wearing. It relates to a composite yarn that can.

  As a glove excellent in cutting prevention, for example, Patent Document 1 discloses a glove composed of a coated yarn using a metal fiber as a core yarn and a polyethylene naphthalate fiber having an irregular cross section as a sheath yarn. Although it is described that it is hard to slip, has a soft texture, and is excellent in workability and comfort at the time of wearing, it cannot be said that the essential cut prevention property is sufficient. In addition, although a glove composed of a covering yarn using para-aramid fiber as a sheath yarn is also disclosed, although it has sufficient cut prevention properties, it is slippery and has poor flexibility. In addition to cut prevention, gloves that are excellent in workability and comfort when worn are required.

JP 2002-088539 A

  The present invention provides a composite yarn having improved such drawbacks.

（２）上記（１）記載の複合糸条で構成されたことを特徴とする手袋。 The inventors of the present invention have reached the present invention as a result of intensive studies to solve the above problems.
That is, the present invention is as follows.
(1) A core portion composed of a metal fiber is covered with a fiber (hereinafter referred to as “polyketone fiber”) in which 95 mol% or more of repeating units are composed of a polyketone represented by the following formula (1). Composite yarn.

(2) A glove comprising the composite yarn described in (1) above.

  The present invention provides a composite yarn suitable for a glove excellent in cut prevention, workability at the time of wearing, and comfort, and a glove composed of the composite yarn.

但し式中、Ｒは、エチレン以外の炭素数１〜３０の有機基であり、例えば、プロピレン、ブチレン、１−フェニルエチレン等の基であり、Ｒの水素原子の一部または全部が、ハロゲン基、エステル基、アミド基、水酸基、エーテル基で置換されていてもよい。もちろん、Ｒは二種以上であってもよく、例えば、プロピレン基と１−フェニルエチレン基が混在していてもよい。 The present invention will be specifically described below.
In the polyketone constituting the polyketone fiber of the present invention, 95 mol% or more, preferably 98 mol% or more, particularly 99.6 mol% or more of the repeating unit is represented by the above formula (1), and 5 mol%. Within a range of less than the above, repeating units other than the above formula (1), for example, those represented by the following formula (2) may be contained.

In the formula, R is an organic group having 1 to 30 carbon atoms other than ethylene, for example, a group such as propylene, butylene, 1-phenylethylene, etc., and a part or all of the hydrogen atoms of R are halogen groups. , An ester group, an amide group, a hydroxyl group, and an ether group may be substituted. Of course, R may be two or more, for example, a propylene group and a 1-phenylethylene group may be mixed.

式中のｔ及びＴは、それぞれヘキサフルオロイソプロパノール（セントラル硝子（株）社製）、及び該ヘキサフルオロイソプロパノールに溶解したポリケトンの希釈溶液の２５℃での粘度管の流過時間である。Ｃは、上記希釈溶液の濃度であり、ヘキサフルオロイソプロパノール１００ｍｌ中のポリケトンの質量（ｇ）である。
ポリケトンには必要に応じて、酸化防止剤、ラジカル抑制剤、他のポリマー、艶消し剤、紫外線吸収剤、難燃剤、金属石鹸等の添加剤を含んでいてもよい。 The intrinsic viscosity [η] of the polyketone constituting the polyketone fiber in the present invention is preferably 1 dl / g or more, more preferably 2 dl / g or more, particularly preferably 4 dl / g or more, preferably 20 dl / g or less, more preferably. 15 dl / g or less, particularly preferably 10 dl / g or less.
The intrinsic viscosity [η] is a value obtained based on the following definition formula.

In the formula, t and T are respectively the flow times of a viscosity tube at 25 ° C. of hexafluoroisopropanol (manufactured by Central Glass Co., Ltd.) and a dilute solution of polyketone dissolved in the hexafluoroisopropanol. C is the concentration of the diluted solution and is the mass (g) of polyketone in 100 ml of hexafluoroisopropanol.
The polyketone may contain additives such as antioxidants, radical inhibitors, other polymers, matting agents, ultraviolet absorbers, flame retardants, and metal soaps as necessary.

Next, as preferable characteristics of the polyketone fiber, the tensile strength is 5 cN / dtex or more, more preferably 10 cN / dtex or more, particularly preferably 15 cN / dtex or more, 30 cN / dtex or less, and the tensile elongation is 3%. Or more, more preferably 3.5% or more, particularly preferably 4% or more and 15% or less, more preferably 10% or less, still more preferably 8% or less, particularly preferably 6% or less, and the tensile modulus is 100 cN. / Dtex or more, more preferably 200 cN / dtex or more, particularly preferably 300 cN / dtex or more, and 1000 cN / dtex or less.
The polyketone fibers are short fibers and long fibers, and may be uniform or thick in the length direction. The cross-sectional shape of the fibers is round, triangular, L-shaped, T-shaped, Y-shaped, W-shaped Type, eight leaf type, flat (with flatness of about 1.3-4, W type, I type, boomerang type, wave type, skewer type, eyebrows type, rectangular parallelepiped type, etc.), dog bone type, etc. Polygon type, multi-leaf type, hollow type or irregular shape may be used.

Examples of the fiber form include short fiber bundles such as short fiber fleece and roving, spun yarn (including fine spun yarns such as silo span and silofil), multifilament yarn, and monofilament yarn. For achievement, a multifilament yarn is preferred. The filament yarn may be an original yarn (twisted yarn such as a non-twisted yarn or a sweet twisted yarn), but may also be a bulky processed yarn subjected to a conventionally known bulky processing such as false twisting, fluid injection processing, knit deniting, etc. The raw yarn and the bulky processed yarn may be combined and used by aligning, blending, twisting or the like.
Preferred single yarn fineness is 0.01 to 10 dtex, more preferably 0.1 to 10 dtex, particularly preferably 0.5 to 5 dtex in the case of short fiber bundles, spun yarns, and multifilament yarns. The range is 10 to 100,000 dtex. Moreover, a preferable total fineness is the range of 10-100,000 dtex, More preferably, it is the range of 30-50000 dtex.

  The polyketone fiber covering the core may be 100% by mass, but if necessary, it is preferably in the range of 50% by mass or less, other than the polyketone fiber, for example, natural fibers such as cotton and wool, rayon fiber, lyocell Cellulose fibers such as fibers, polyester fibers, polyamide fibers, aramid fibers (para and meta), polyvinyl alcohol fibers, poly (p-phenylenebenzobisoxazole) fibers, ultrahigh molecular weight polyolefin fibers, carbon fibers, ceramic fibers, glass You may mix with well-known various fibers, such as a fiber and a metal fiber. Various types of fibers to be mixed are long fibers and short fibers, and there are multifilament yarns, monofilament yarns, spun yarns, and short fiber bundles. An average fiber length of 70 mm or more, more preferably 100 mm or more, particularly 200 mm or more, further 250 mm or more, and short fibers of 1500 mm or less, more preferably 1200 mm or less, particularly preferably 1000 mm or less are preferable. For the mixed form, known means such as blending, drawing, entanglement, and twisting may be used.

Examples of the metal fibers constituting the core include stainless steel and titanium, and the forms thereof include long fibers and short fibers, and there are multifilament yarns, monofilament yarns, spun yarns, and short fiber bundles. From the viewpoint of cut prevention, a filament yarn is preferable. A preferable wire diameter is 20 to 150 μm, and more preferably 20 to 80 μm.
The core portion may be composed of 100% metal fiber, but if necessary, it may preferably be mixed with conventionally known natural fibers or synthetic fibers other than metal fibers in a range of 50% by mass or less, Preferably, high-strength fibers having a tensile strength of 10 cN / dtex or more, such as polyketone fibers, aramid fibers (para and meta), wholly aromatic polyester fibers, polybenzimidazole fibers, polyvinyl alcohol fibers, poly (p-phenylenebenzo) Bisoxazole) fiber, ultra-high molecular weight polyolefin fiber, carbon fiber, ceramic fiber and the like are preferable. The mixed fibers may be long fibers and short fibers, and examples include multifilament yarns, monofilament yarns, spun yarns, and short fiber bundles. From the viewpoint of cutting prevention, filament yarns and average fibers obtained by check-off A short fiber having a length of 70 mm or more, more preferably 100 mm or more, particularly 200 mm or more, further 250 mm or more, and 1500 mm or less, more preferably 1200 mm or less, particularly 1000 mm or less is preferable. As a mixing method, a known method such as alignment, twisting, mixed fiber entanglement may be used. The upper limit of the tensile strength of the high strength fiber is not particularly limited, but the upper limit is about 40 cN / dtex for the organic fiber.

The composition ratio of the core part in the composite yarn in the present invention is preferably 5 to 70%, more preferably 10 to 60%.
In the present invention, as a method of coating the core metal fiber with polyketone fiber, a covering method (single or double; for example, double covering with polyketone fiber yarn and fiber yarn other than polyketone fiber), a wrapping method (for example, hollow) Wrapping yarn using a spinning machine called a spindle spinning machine), spinning and twisting method (for example, core yarn or silofil using a ring spinning machine), etc. Especially, covering in which the core metal fiber is not twisted A method and a wrapping method are preferable.
The composite yarn of the present invention exhibits its usefulness particularly when used as a glove, and can provide a glove excellent in workability and comfort when worn and cut prevention.

In the present invention, a glove may be produced using 100% of the composite yarn, but it may be mixed with a polyketone fiber or a fiber other than the polyketone fiber by knitting or the like.
For example, it is possible to further improve the fit by mixing with a yarn having stretch properties such as elastic fiber or false twisted yarn and a composite yarn in which this yarn is covered with other fibers by covering or the like. The surface of the glove is mainly composed of yarns with a high coefficient of friction, such as fibers, and unevenness due to stitches and textures is formed on the surface of the gloves by selecting the structure of the knitted fabric. Or you may.
What is necessary is just to select suitably the mixing rate and use site | part of the composite yarn of this invention in a glove according to the cut | incision prevention property or cut | incision prevention reinforcement | strengthening site | part (for example, palm part or finger | toe part) to require.

In the present invention, the glove includes a knitted fabric, a woven fabric, a non-woven fabric, and a fabric composed of a combination thereof. For example, the glove is knitted using a commercially available computer glove knitting machine such as Shima Seiki Seisakusho. Things.
In addition, knitted fabrics (flat knitted fabrics, circular knitted fabrics, warp knitted fabrics), woven fabrics (flat, twill, satin and their changed structures, woven fabrics), non-woven fabrics (spunbond non-woven fabrics, needle punches, non-woven fabrics entangled with columns, etc.) , Felt, etc.), a combination thereof (hereinafter simply referred to as “fabric”), natural leather such as pig leather, and artificial leather, which may be used as gloves that are cut into a hand shape and sewed. What is necessary is just to comprise a part or all of this fabric with a strip.
In addition, as a fabric, the case of one layer (it is comprised by the surface and the back surface) and the case of the multilayered structure (it is comprised by the surface, the back surface, and an intermediate | middle layer) more than two layers or three layers are mentioned.

Examples of the multilayer fabric include reversible single knit, double knit, sliver knit, corrugated cardboard knit and double russell for knitted fabric, double velvet loom for woven fabric, and one or two or more types of fiber webs laminated in multiple layers. Or what laminated | stacked the fiber web and the knitted fabric in multiple layers, and made the fiber entanglement is mentioned. Here, the intermediate layer refers to a binding yarn, a connecting yarn, and an insertion yarn (including a spun yarn, a filament yarn, and a sliver).
Gloves may be used as they are, but various known treatments such as a part of or all of the gloves for the purpose of imparting anti-slip properties, vinyl chloride resin, latex, natural rubber on the outer surface of the palm or the entire outer surface. Further, an elastomer such as synthetic rubber may be coated or laminated by a known means. Further, in order to prevent stuffiness, a gas permeable and liquid impermeable elastomer such as porous or nonporous polyurethane or porous polytetrafluoroethylene (PTFE) may be coated or laminated. An elastomer such as rubber may be further processed on the glove.
Specific examples of the use of gloves include iron making, welding, painting, fire fighting, and car racing racing. In the present invention, in particular, because of excellent wearing comfort, for precision machinery industry, aircraft It is suitable for fields that require delicate work such as industry, information equipment industry, medical surgery or hygiene.

The composite yarn of the present invention is also useful for protective materials such as arm covers and outdoor sports clothing other than gloves.
For example, for the purpose of suppressing a decrease in the tensile strength of the polyketone fiber by receiving strong ultraviolet rays outdoors, for example, an ultraviolet absorber (for example, benzophenone series, benzotriazole series, There are one kind or a combination of two or more kinds of hindered amines.) And / or UV screening agents (for example, fine particles such as titanium oxide, iron oxide, cerium oxide, etc.), and the average particle diameter is preferably 0.01 to 0.6 μm. .) Is preferably contained. Examples of the method of inclusion include, for example, a method of imparting or coating a resin or a film containing an ultraviolet absorber and / or an ultraviolet shielding agent to a fiber or a composite yarn, a woven or knitted fabric, etc., and an ultraviolet absorber and / or an ultraviolet shielding. As for content of an agent, 0.001-10 mass% is preferable with respect to the mass of resin or a film.

The present invention will be described more specifically based on examples, but the present invention is not limited to these examples.
The measurement method and evaluation method in the present invention are as follows.
(1) Tensile strength, tensile elongation, and tensile modulus of fiber Measured according to JIS-L-1013.
Sample length: 20 cm, tensile speed: measured at 20 cm / min, and an average value is obtained when measured 20 times.
(2) Soft feel of gloves The sensory test by touch was conducted by five inspectors engaged in the fiber research, and the following ranking was performed.
<Soft texture>
○: I feel soft.
Δ: Feels somewhat soft.
X: Feels hard.

(3) Workability and comfort when wearing gloves A sensory test by wearing was conducted by five inspectors engaged in fiber research, and the following ranking was performed.
<Wearing comfort>
○: Excellent workability and comfort when worn.
(Triangle | delta): The workability | operativity at the time of wear and comfort are a little excellent.
X: Workability and comfort when worn are inferior.
(4) Cut resistance According to JIS-T-8052.

[Example 1]
As the core yarn, an austenitic stainless steel wire (18Cr-12Ni-2.5Mo steel, SUS316, specific gravity 7.98, manufactured by Nippon Seisen Co., Ltd.) is used, and a 280 dtex polyketone fiber multi-fiber is used as the sheath yarn. A filament yarn (manufactured by Asahi Kasei Fibers Co., Ltd .; trade name: Cyvalon; tensile strength 18 cN / dtex, tensile elongation 5%, tensile elastic modulus 350 cN / dtex) is subjected to single covering by a conventional method and a composite yarn (857 dtex). Equivalent). As a result of producing and evaluating a glove with a 7 gauge glove knitting machine using a composite yarn obtained by combining five obtained composite yarns, the soft feel of the glove (○ to △), workability when wearing the glove In addition, the comfort (◯ to Δ) was excellent. The cut resistance was 13N.

[Comparative Example 1]
280 dtex para-aramid fiber multifilament yarn (tensile strength 20 cN / dtex, tensile elongation 4.5%, tensile elastic modulus 500 cN / dtex) was used in the same manner as in Example 1 instead of polyketone fiber. As a result of producing and evaluating a glove using the composite yarn in the same manner as in Example 1, the soft texture of the glove (Δ to ×), workability and comfort when wearing the glove (Δ to ×), and Example 1 It was inferior to The cut resistance was 12N.

  The present invention provides a composite yarn suitable for a glove particularly excellent in cut prevention, wearability and comfort, and a glove composed of the composite yarn.

Claims (2)

A composite yarn characterized in that a core portion composed of a metal fiber is covered with a fiber composed of a polyketone represented by the following formula (1) with 95 mol% or more of repeating units.

  A glove comprising the composite yarn according to claim 1.