EP0729713A1 - Strümpfe - Google Patents

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Publication number
EP0729713A1
EP0729713A1 EP95931407A EP95931407A EP0729713A1 EP 0729713 A1 EP0729713 A1 EP 0729713A1 EP 95931407 A EP95931407 A EP 95931407A EP 95931407 A EP95931407 A EP 95931407A EP 0729713 A1 EP0729713 A1 EP 0729713A1
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EP
European Patent Office
Prior art keywords
yarn
covering
hosiery
polyamide
quadrilateral
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Granted
Application number
EP95931407A
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English (en)
French (fr)
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EP0729713A4 (de
EP0729713B1 (de
Inventor
Hirofumi Kobayashi
Nagafumi Himeno
Yumiko Sawai
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Toray Industries Inc
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Toray Industries Inc
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Publication date
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Publication of EP0729713A1 publication Critical patent/EP0729713A1/de
Publication of EP0729713A4 publication Critical patent/EP0729713A4/de
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    • A—HUMAN NECESSITIES
    • A41—WEARING APPAREL
    • A41B—SHIRTS; UNDERWEAR; BABY LINEN; HANDKERCHIEFS
    • A41B11/00—Hosiery; Panti-hose
    • 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
    • D02G3/32—Elastic yarns or threads ; Production of plied or cored yarns, one of which is elastic
    • D02G3/328—Elastic yarns or threads ; Production of plied or cored yarns, one of which is elastic containing elastane
    • 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
    • D02G3/32—Elastic yarns or threads ; Production of plied or cored yarns, one of which is elastic
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2331/00—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products
    • D10B2331/02—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products polyamides

Definitions

  • the present invention relates to hosiery produced by knitting substantially exclusively a covered elastic yarn at least the leg portion knitting fabric thereof. Especially it relates to hosiery good in transparency, flat feeling, luster feeling, touch feeling, fitting property, durability, wearing comfort, etc.
  • panty hose in recent years is remarkable, i.e., rapid shift from panty hose produced using the conventional false-twist nylon yarn to panty hose produced using a covered elastic yarn constituted of an elastic polyurethane yarn and a nylon yarn twisted around the elastic polyurethane yarn.
  • the panty hose produced using a covered elastic yarn have gained public favor in the market since they have not only excellent close fitting property due to recovery of the elastic polyurethane yarn after elongation thereof, but also good durability.
  • panty hose produced using the conventional covered elastic yarn have been produced by alternately knitting the covered elastic yarn and a nylon yarn, but recently for the purposes of obviating weft bar due to alternate course knitting and of achieving higher fitting property, panty hose wherein a leg portion knitting fabric is formed by knitting only a covered elastic yarn, so-called every course panty hose are being marketed.
  • panty hose wherein a leg portion knitting fabric is formed by knitting only a covered elastic yarn, so-called every course panty hose are being marketed.
  • the hosiery wherein a leg portion knitting fabric is formed by knitting only a covered elastic yarn is called "every course hose”.
  • the covered elastic yarn has a structure in which a nylon yarn is twisted around an elastic polyurethane yarn, it is liable to be large in fiber fineness, therefore the hosiery produced using the yarn are disadvantageously poor in transparency, stuffy, large in fabric thickness, etc. as compared with the conventional hosiery produced using a false-twist yarn or a composite fiber.
  • These disadvantages are worse in every course hose, and in addition, every course hose do not have luster feeling and furthermore since the fabric is less uniform, they are poor in flat feeling as a further other large problem.
  • the covering performance is important for improving the durability, fabric appearance, color tone, handling touch, etc. of the hosiery obtained, whether the nylon yarn is wound around the elastic polyurethane yarn so as not to expose the elastic polyurethane yarn in surface of the covered elastic yarn and uniformly wound or not.
  • the main object of the present invention is to overcome the disadvantages of the above prior arts, and to provide every course hose which is not only excellent in transparency, flat feeling, luster feeling, touch feeling, and wearing comfort not achieved by the conventional every course hose but also good in fitting property, durability, etc., by improving the every course hose produced by knitting substantially exclusively a covered elastic yarn into the leg portion knitting fabric thereof in transparency, flat feeling, luster feeling, large in fabric thickness, wearing comfort, etc.
  • the present invention is hosiery, produced by knitting substantially exclusively a covered elastic yarn into at least the leg portion knitting fabric thereof, wherein said covered elastic yarn is formed by winding a polyamide filament yarn around a core yarn constituted of an elastic yarn, comprising: the cross section of the polyamide filament yarn is a swollen quadrilateral substantially free from any depression and having four protruding portions, wherein the swollen quadrilateral is formed by four curved sides substantially swelling outside from the respective four sides of an inscribed quadrilateral with the protruding portions as vertexes (hereinafter simply called "a swollen quadrilateral").
  • the present invention is every course hose produced by knitting substantially exclusively a covered elastic yarn into at least the leg portion knitting fabric thereof, wherein a polyamide filament yarn having a cross section of said specific swollen quadrilateral are used as the covering yarn of the covered elastic yarn, therefore every course hose can have excellent properties which could not be achieved in the conventional every course hose, for example, very good transparency, luster feeling, refreshing feeling, fabric appearance, soft touch, smoothing touch, fitting property, etc., and also excellent wearing comfort and high fashionability.
  • the covered elastic yarn are improved in uniformity and transparency, to improve the transparency, luster feeling, touch feeling, fabric appearance, etc. of the hosiery fabric.
  • they are better in the adherence of the covering yarn to the elastic yarn as a core yarn, higher in covering performance, less in the separation of the covering yarn from the elastic yarn liable to be caused when a conventional yarn with a round section is used, better in fabric appearance and skin touch feeling, and less in the exposure of the elastic yarn as a core yarn, hence higher in durability.
  • the frictional coefficient and its variation of the leg portions can be kept at low levels which could not be achieved by the conventional every course hose, and as a result, the hosiery obtained are excellent in smoothing touch when worn, and less in rough feeling when worn, being excellent in skin touch.
  • the hosiery is produced by knitting substantially exclusively a covered elastic yarn, high fitting power can be easily obtained, and the 60% recovery stress can be kept in an ideal range from 180 to 350 g.
  • the conventional every course hose is poor in fabric appearance due to shrunken fabric, but in the present invention, since the above mentioned polyamide filament yarn having a cross section of the specific swollen quadrilateral are used as a covering yarn, such effects that covering performance is uniform with less core elastic yarn exposed, that the uneven shrinkage of the knitted fabric is inhibited, that the fabric appearance is prevented from being worsened, and that the processability during knitting and finishing can be improved can be obtained.
  • the hosiery intended in the present invention includes hosiery products such as panty hose, long hosiery and short hosiery.
  • Fig. 2 (a) illustrates a long stocking which comprises a toe portion 11 and a heel portion 12, and a leg portion 13 refers to the portion which is upper side of a portion corresponding to an ankle immediately above the heel portion 12. At the top end of the leg portion 13, a stretchable belt portion 15 is usually provided.
  • Fig. 2 (b) illustrates panty hose which comprises a toe portion 11, a leg portion 13, a panty portion 14 and a stretchable belt portion 15, and a pair of right and left stocking portions sewn together in the panty portion 14 and the stretchable belt portion 15.
  • the leg portion knitting fabric it is necessary that at least the leg portion knitting fabric thereof is produced by knitting substantially exclusively a covered elastic yarn, thereby to solve the problem of the weft bar.
  • the leg portion knitting fabric may have a knitted pattern composed of another material or decorated with something like one point mark.
  • the portions other than the leg portion (such as the panty portion) may also be produced by knitting a covered elastic yarn same as the leg portion.
  • the covered elastic yarn can be a single covered elastic yarn (SCY) having a covering yarn singly wound around an elastic yarn, or a double covered elastic yarn (DCY) having two covering yarns doubly wound around an elastic yarn in mutually opposite directions of twist.
  • SCY single covered elastic yarn
  • DCY double covered elastic yarn
  • Single covered elastic yarns are especially preferable in view of higher transparency, smaller in fabric thickness and less stuffy feeling of hosiery.
  • the covered elastic yarn used in the present invention comprises a polyamide filament yarn as a covering yarn, wherein the cross section is a swollen quadrilateral substantially free from any depression and having four protruding portions, and formed by four curved sides substantially swelling outside from the respective four sides of an inscribed quadrilateral with the protruding portions as vertexes.
  • the polyamide filament yarns may be ordinary polyamide fibers such as nylon 6 fibers, nylon 66 fibers and nylon 46 fibers, and above all, nylon 6 fibers especially excellent in transparency and luster feeling are preferable as a covering yarn of every course hose wherein a transparency and luster feeling of the fibers are especially desired.
  • the polyamide is preferably a polyamide substantially consisting of any one polymer component only such as nylon 6, nylon 66 or nylon 46.
  • a small amount, say, less than about 3 mol% of another polymer component may also be copolymerized.
  • a small amount, say, less than about 3 wt% of another polymer may also be blended.
  • the polyamide has a polymerization degree of preferably 2.5 to 3.5, more preferably 2.6 to 3.3 of relative viscosity in 98% sulfuric acid.
  • the polyamide may contain, as required, a photo stabilizer, thermal stabilizer, antioxidant, antistatic agent, dyeability improver, etc. as far as they do not impair transparency, but it is preferable for further improving the transparency, touch feeling, color clearness, durability, etc. of every course hose, not to substantially contain any delustering agent such as titanium oxide and pigment.
  • Titanium oxide is generally contained in polyamide fibers for hosiery as a delustering agent. Especially in the case of fiber with a non-circular cross section such as 3-lobed (Y-shaped) cross section or 5-lobed cross section, since the glittering on the surface of the fiber is very large, it has been considered to be absolutely necessary to add titanium oxide for suppressing the glittering. However, when the fibers having a cross section of a swollen quadrilateral of the present invention are used as the covering yarn, the problem of glittering does not arise, and substantial freedom from titanium oxide is rather effective for improving the transparency, color clearness, strength, etc. of the hosiery. It is preferable that titanium oxide is not substantially contained.
  • the polyamide fibers as the covering yarn preferably contain an acid amide compound represented by the following general formula (A) or (B) by 0.01 to 1.0 wt% based on the weight of the polyamide, for further improving the transparency, color clearness, durability, soft touch, etc. of the hosiery, and decreasing the roughness touch due to the unevenness of the knitted ground, and for further improving the soft touch.
  • R 1 and R 4 represent, respectively independently, an alkyl group having 10 to 20 carbon atoms
  • R 2 and R 3 represent, respectively independently a hydrogen atom, methyl group or ethyl group
  • n represents an integer of 1 to 10.
  • These acid amide compounds can be prepared by the reaction of a dicarboxylic acid with an alkylmonoamine or the reaction of a monocarboxylic acid with an alkylenediamine.
  • Ethylene-bis-stearylamide is a typical compound.
  • the dicarboxylic acid to be used in the above reaction includes dicarboxylic acids having 2 to 12 carbon atoms such as succinic acid, adipic acid and sebacic acid.
  • the alkylmonoamine includes primary amines having an alkyl group with 10 to 20 carbon atoms such as octadecylamine, methyloctadecylamine and ethyloctadecylamine, and secondary amines in the form of such primary amines further substituted by a methyl group or an ethyl group.
  • the monocarboxylic acid to be used in the above reaction includes alkylmonocarboxylic acids having 12 to 22 carbon atoms such as lauric acid, palmitic acid and stearic acid.
  • the alkylenediamine includes alkylenediamines having 1 to 10 carbon atoms such as methylenediamine, ethylenediamine, propylenediamine and butylenediamine.
  • the polyamide filament yarn used as the covering yarn in the covered elastic yarn of the present invention has a cross section of a swollen quadrilateral substantially free from any depression and having four protruding portion, wherein the swollen quadrilateral is formed by four curved sides substantially swelling outside from the respective four sides of an inscribed quadrilateral with the protrusions as vertexes.
  • the configuration of the swollen quadrilateral is a quadrilateral constituted of four curved sides, and that the four curved sides substantially protrude outward viewed from the center of the quadrilateral and are substantially free from any depression.
  • the swollen quadrilateral in the present invention can be the configuration typically illustrated in Fig. 1 and Fig. 3 (a).
  • Fig. 1 shows a typical example of the swollen quadrilateral of the present invention.
  • Figs. 3 show cross sectional views of single fibers used as the covering yarns of the examples, and Fig. 3 (a) shows a case of the present invention, and the others show cases not in conformity with the present invention.
  • symbol 1 denotes a cross section of a fiber; 2 (dot-dash line), its circumcircle; and 3 (broken line), its inscribed quadrilateral.
  • the cross section 1 of the fiber has four protruding portions 4 and 4', and the curved sides 5 and 5' connecting the adjacent protruding portions 4 and 4' are substantially swollen outward from the respective sides of the inscribed quadrilateral 3 with the protruding portions 4 and 4' as vertexes.
  • the curved sides 5 and 5' are substantially swollen from the respective sides of the inscribed quadrilateral 3, and are substantially free from any depression at any intermediate portion of the curved sides 5 and 5'. That is, the outline of the cross section 1 of the fiber exists between the inscribed quadrilateral 3 and the circumcircle 2, and every portion of it is substantially swollen.
  • the quadrilateral cannot be the swollen quadrilateral of the present invention.
  • the ratio (b/a)of the distance b from the center of the circumcircle 3 to the centers of the curved sides 5 to the distance a from the center of the circumcircle 3 to the protrusions 4 is 0.80 to 0.96.
  • the configuration of the cross section of the fibers in the present invention is only required to be substantially free from any depression, and the slight depression which may be caused in the production and processing of the yarn and in the production of hosiery, etc. may be contained if the intended object of the present invention can be achieved.
  • the swollen quadrilateral specified in the present invention may be not only the configuration of Fig. 1, but also may be a quadrilateral almost ellipsoidal in the circumcircle, and rectangular or parallelogrammatic in the inscribed quadrilateral as far as the configuration conditions specified in the present invention are satisfied.
  • the inscribed quadrilateral is substantially parallel in two sets of two opposite sides, and especially preferably a square, a rectangle or the configuration similar to them.
  • the line segments B1 and B2 connecting the centers of the curved sides 5 and 5' facing each other preferably satisfy the relation, 1/2 ⁇ B1/B2 ⁇ 2/1, more preferably 1/1.5 ⁇ B1/B2 ⁇ 1.5/1.
  • the fibers having a cross section of said swollen quadrilateral are more excellent in transparency, luster feeling, smoothing touch, etc. than fibers having a circular cross section.
  • the fibers having a conventional odd-shaped cross section with depressions such as four lobed type or three lobed type cannot provide this effect.
  • the use of fibers with a cross section of said swollen quadrilateral as a covering yarn can improve the transparency, luster feeling, refreshing feeling, fabric appearance, etc. of every course hose.
  • the fibers having a cross section of the swollen quadrilateral are used for covering, the single fibers can be easily arranged in one layer around the core yarn when covering, and this in combination with the cross section free from any depression gives a large effect in improving transparency, luster feeling, touch feeling, etc., and compared to the conventional every course hose, very excellent transparency, luster feeling, touch feeling, etc. can be obtained without worsening the other properties required for hosiery such as durability and fitting property.
  • the fiber having a conventional odd-shaped cross section with depressions such as 4-lobed type or 3-lobed type are used as the covering yarn, the existence of depressions in the cross section of the fibers worsens the transparency of the hosiery, and the glittering due to reflection and roughness worsens the luster feeling and also soft touch, not allowing the intended object of the present invention to be achieved.
  • single fibers having a cross section of 3-lobed type or 5-lobed type are liable to be arranged in two or more layers around the core yarn like fibers having a circular cross section, and in addition, the roughness on the surface of the covered elastic yarn is large, not allowing the intended object of the present invention to be achieved.
  • the polyamide fibers having a cross section of the swollen quadrilateral specified in the present invention can be obtained by ordinary method of obtaining a desired cross section by controlling a shape of a spinning nozzle of a spinning nozzle plate, a degree of polymerization of a polymer used, etc.
  • a polyamide is melt-spun from a spinning nozzle with cross slits, and in this case, the degree of polymerization (relative viscosity) of the polymer and the dimensions of the slits can be adjusted to obtain the desired cross section.
  • the ratio of slit leg length/slit width is preferably 1 or less.
  • the polyamide fibers having a cross section of the swollen quadrilateral specified in the present invention is 1.129 to 1.132 g/cm 3 in density, 28.0 to 40.0 g/d in initial tensile resistance, 12 to 15% in boil off shrinkage, 6.0 g/d or more in strength, and 45% or less in elongation, in view of further improving the transparency, soft touch, fabric appearance, durability, etc.
  • the initial tensile resistance is less than 28.0 g/d as in the case of undrawn yarns spun at a low speed and undrawn yarns spun at a high speed (so-called POY)
  • a formation of the knitted loops in the knitted fabric of every course hose become loose in a tendency to worsen the fabric appearance unpreferably.
  • the tensile modulus of more than 40.0 g/d as in the drawn yarns obtained by drawing the slowly spun undrawn yarns at a high ratio is unpreferable in view of transparency, softness, etc. of the knitted fabric of every course hose.
  • the boil off shrinkage exceeds 15% as in the drawn yarns obtained by drawing the slowly spun undrawn yarns at a high ratio, since the shrinkage in the heat treatment processing such as dyeing is too large, the strong tightening by the polyamide yarn wound around the core yarn is liable to make the covered elastic yarn rigid, for further impairing the softness of the fabric, and the knitted loops of the fabric are liable to be deformed or stretched unpreferably when they are formed.
  • the respective values of the above mentioned initial tensile resistance, strength and elongation are obtained by drawing an elongation-load curve (S-S curve) by measuring fiber samples allowed to stand in an atmosphere of 20°C and 65% RH in free shrinking state, using a Tensilon testing machine in the condition that an initial load of 1/30 g/d, a sample length of 50 cm and a tensile speed of 50 cm/min.
  • the initial tensile resistance is obtained by drawing a tangent for the highest gradient in the rise portion of the S-S curve, and multiplying the stress value at an elongation of 10% by 100/10.
  • the polyamide fibers having a cross section of the swollen quadrilateral with said physical values can be produced by a high speed direct spinning drawing method of cooling and taking up melt-spun filaments, drawing to 3.0 times or less, heat-treating at 150°C or higher, and winding at 3500 m/min or more.
  • the polyamide fibers obtained by the above high speed direct spinning drawing method can be expressed as 1.1290 to 1.1320 g/cm 3 in density in view of fiber structure, and it is difficult to obtain the polyamide fibers having a cross section of the swollen quadrilateral with these physical values, by any other yarn production method such as low speed spinning, high speed spinning without drawing, or low speed spinning and drawing at a high ratio.
  • the thickness of the covering yarn used in the present invention is preferably 5 to 12 deniers, especially 5 to 10 deniers when used for single covering, 5 to 10 deniers when used for double covering, for obtaining higher transparency, and excellent durability and wearing feeling. If the yarn thickness is too small, practical durability is liable to be insufficient, and if too large on the contrary, the transparency is liable to be insufficient while the handling touch is liable to be coarse and hard unpreferably.
  • the yarn is a multi-filament yarn consisting of 2 to 7 filaments. If the number of filaments is one, the handling touch is liable to be coarse and hard, and the durability is liable to be insufficient. On the contrary, if the number of filaments is 8 or more, transparency and durability are liable to be insufficient unpreferably.
  • the elastic yarn to be used as the core yarn of the covered elastic yarn can be an elastic polyurethane yarn, an elastic polyamide elastomer yarn, an elastic polyester elastomer yarn, a natural rubber yarn, a synthetic rubber yarn, a butadiene yarn, etc.
  • the yarn preferable for hosiery in view of elastic property, thermal properties, durability, etc. is an elastic polyurethane yarn or an elastic polyamide elastomer yarn.
  • the elastic polyurethane yarn can be obtained by any method of dry spinning, melt spinning or wet spinning.
  • the thickness of the elastic yarn depends on the application and pretermined tightening pressure of the hosiery, but is generally about 8 to 70 deniers, preferably 10 to 40 deniers. If the thickness is less than 8 deniers, the strength of the yarn is insufficient, and such trouble as breaking of the core yarn is liable to occur during covering and knitting, and the hosiery is liable to be insufficient in stretchability and durability unpreferably. If the thickness exceeds 70 deniers, the tightening power is so strong as to give a strong pressure feeling, and the decline of transparency and the increase of coarse and hard feeling are liable to be caused unpreferably.
  • the covered elastic yarn used in the present invention can be produced by winding a covering yarn constituted of plural polyamide filaments having a cross section of the specific swollen quadrilateral, around an elastic yarn in a single layer or double layer by ordinary method.
  • the count of covering twist of the polyamide filament yarn wound around the core yarn composed of elastic yarns depends on whether the wound layer is single or double.
  • the count of covering twist is preferably 2200 to 2800 t/m for further improving the skin touch, durability, fabric appearance, etc. of the hosiery. Even if it is less than 2200 t/m (the same level as in the case of conventional single covered elastic yarn), good hosiery can be obtained, but in view of fabric appearance and the durability in the case of using a covering yarn smaller in thickness, 2200 t/m or more is preferable.
  • the count of twist of the single covered elastic yarn is more preferably 2300 to 2700 t/m.
  • the count of covering twist for the lower layer is 2200 to 2800 t/m.
  • the leg portion knitting fabric produced by knitting exclusively a covered elastic yarn can be knitted by an ordinary method of supplying only covered elastic yarns to a knitting machine with two or four yarn feeding ports.
  • a single covered elastic yarn with the covering yarn twisted in S direction and a single covered elastic yarn with the covering yarn twisted in Z direction are knitted alternately.
  • the leg portion knitting fabric is produced in this way, to make hosiery.
  • the 60% elongation recovery stress (60% BP) is preferably in a range from 180 to 350 g, more preferably 200 to 300 g.
  • the 60% BP serves as an indicator of wearing fitting property thereof, and if the value is too low, wrinkles and loosenings are liable to occur unpreferably. If too high on the contrary, the tightening pressure is too high, and tightness and stuffiness are too strong. Furthermore, the knitted fabric shrinks so much as to impair uniform appearance unpreferably.
  • the elastic polymer an ether polyurethane or an ester polyurethane, etc.
  • its spinning method melt spinning, dry spinning or wet spinning, etc.
  • the thickness of the yarn knit design (number of needles, loop size, etc.) of hosiery
  • the heat setting conditions finishing template size, temperature, etc.
  • the 60% elongation recovery stress (60% BP) can be obtained by the following method.
  • a hose sample is elongated under a load of 2 kg hooked on one end of the sample, and the elongated sample length is expressed as L1.
  • the hose sample is folded double and set in a constant elongation type tensile testing machine, Model TOM-100E (produced by Shinkoh Communication Industry Co., Ltd.), and elongated up to 75% of L1/2 and recovered, to draw a stress-strain hysteresis curve. From the hysteresis curve of recovery, the stress value at the moment when the sample is recovered to the length of 60% elongation of L1/2 is obtained as 60% BP (g).
  • leg portions of the following hosiery products were evaluated according to the following methods.
  • a hosiery product was put on a human leg model, and the soft touch, refreshing feeling and smoothing touch were relatively evaluated by five inspectors who touched the hosiery product. The following criterion was referred to.
  • the bursting strength was measured using a Mullen high-pressure testing machine according to JIS P-8131 Bursting Strength Testing Method. The following criterion was referred to.
  • the luster feeling and fabric appearance were relatively evaluated with eyes by five inspectors, and the criterion was the same as that for the above touch feeling.
  • the KES friction property was measured in the warp direction of the knitted fabric, and expressed as frictional coefficient (MIU) and frictional coefficient variation (MMD).
  • Nylon 6 having a relative viscosity in 98% sulfuric acid of 2.7 and containing no titanium oxide was melt at 270°C, delivered at a rate of 800 m/min from a spinning nozzle plate having delivery ports in the shape of cross-shaped of 0.1 mm in slit width and 0.07 mm in slit length, cooled, oiled, and respectively wound as an undrawn yarn. Subsequently, the yarn was drawn so as to have an elongation of 40 to 45%, to thereby obtain a 10-denier nylon 6 yarn of 5-filament having a cross section as shown in Fig. 3 (a) (No. 1).
  • nylon 6 was melt-spun and drawn under the similar conditions as described for No. 1, except that delivery ports in the shape of cross-shaped of 0.2 mm in slit length were used, to thereby obtain a 10-denier nylon 6 yarn of 5-filament as shown in Fig. 3 (b) (No. 2).
  • nylon 6 was melt-spun and drawn under the similar conditions as described for No. 1, except that delivery ports in the shape of Y-shaped or circular were used, to thereby obtain a 10-denier nylon 6 yarn of 5-filaments having a 3-lobed cross section or round cross section (Nos. 3 and 4).
  • nylon 6 was melt-spun and drawn under the similar conditions as described for No. 1, except that 0.35 wt% of titanium oxide was contained, to thereby obtain a 10-denier nylon 6 yarn 5-filaments having a cross section of a swollen quadrilateral (No. 5).
  • the cross section coefficients (b/a) of nylon 6 yarns of Nos. 1 and 2 were 0.91 and 0.62 respectively.
  • a section deformation degree of the nylon 6 yarn (3-lobed cross section) of No. 3 was 1.6.
  • the section deformation degree in this case refers to a value obtained by dividing the radius of the circumcircle by the radius of the inscribed circle.
  • nylon 6 yarns (12 t/m in the count of twist) were respectively used as covering yarns, to cover a 20-denier polyether based polyurethane elastic fiber (spandex) used as a core yarn, at a core yarn draft ratio of 3.1 times, at a count of covering twist of 2,300 t/m in S direction or Z direction in a single layer, to prepare S-directed single covered elastic yarns and Z-directed single covered elastic yarns respectively.
  • the single covered elastic yarns thus obtained were used for knitting panty hose.
  • An S-directed single covered elastic yarn and a Z-directed single covered elastic yarn were alternately supplied into the yarn feeding port of Super 4 knitting machine (400 needles) produced by Nagata Seiki Co., Ltd., to produce panty hose having a leg portion knitting fabric formed by knitting only the covered elastic yarns.
  • the panty hose was then dyed, finished, and set over a pattern plate to produce a panty hose product according to ordinary methods.
  • the panty hose according to the present invention (Nos. 1 and 5) were excellent in all the properties of soft touch, cool feeling, slippery feeling, luster feeling and durability.
  • the panty hose of No. 1 containing no titanium oxide was particularly high in transparency.
  • Nylon 6 having a relative viscosity in 98% sulfuric acid of 2.7 and containing no titanium oxide was melt at 270°C, delivered from a spinning nozzle plate having delivery ports in the shape of cross-shaped of 0.1 mm in slit width and 0.07 mm in slit length, cooled, oiled, taken up by a first godet roller at a rate of 2100 m/min, drawn to 1.8 times to achieve an elongation of 40 to 45%, heat-treated by a 160°C second godet roller, and wound at 4000 m/min, to obtain a 7-denier nylon 6 yarn of 5-filaments having a cross section as shown in Fig. 3 (a) (No. 6).
  • nylon 6 was melt-spun and drawn under the similar conditions as described for No. 1, except that delivery ports in the shape of Y-shaped or circular were used, to thereby obtain a 7-denier nylon 6 yarn of 5-filaments having a 3-lobed cross section or round cross section (Nos. 7 and 8).
  • nylon 6 was melt-spun and drawn under the similar conditions as described for No. 1, except that 0.35 wt% of titanium oxide was contained, to thereby obtain a 7-denier nylon 6 yarn of 5-filaments having a cross section of a swollen quadrilateral (No. 9).
  • the cross section coefficient (b/a) of nylon 6 yarns of No. 6 was 0.93 respectively.
  • a section deformation degree of the nylon 6 yarn (3-lobed cross section) of No. 8 was 1.8.
  • the section deformation degree in this case refers to a value obtained by dividing the radius of the circumcircle by the radius of the inscribed circle.
  • nylon 6 yarns (12 t/m in the count of twist) were respectively used as covering yarns, to cover a 20-denier polyether polyurethane elastic fiber (spandex) used as a core yarn, at a core yarn draft ratio of 3.1 times, at a count of covering twist of 2,300 t/m in S direction or Z direction in a single layer, to prepare S-directed single covered elastic yarns and Z-directed single covered elastic yarns respectively.
  • spandex 20-denier polyether polyurethane elastic fiber
  • the single covered elastic yarns obtained were used for knitting panty hose.
  • An S-directed single covered elastic yarn and a Z-directed single covered elastic yarn were alternately supplied into the yarn feeding port of Super 4 knitting machine (440 needles) produced by Nagata Seiki Co., Ltd., to produce panty hose having a leg portion knitting fabric formed by knitting only by the covered elastic yarns.
  • the panty hose was then dyed, finished, and set over a pattern plate to produce a panty hose product according to ordinary methods.
  • the panty hose according to the present invention (Nos. 6 and 9) were excellent in all the properties of soft touch, cool feeling, slippery feeling, luster feeling and durability. Especially, the panty hose of No. 6 containing no titanium oxide was particularly high in transparency, etc.
  • the nylon 6 yarn of No. 1 obtained in Example 1 and the nylon 6 yarns of Nos. 6, 7 and 8 obtained in Example 2 were used as covering yarns.
  • nylon 6 was melt-spun, cooled, oiled, and wound at 4500 m/min under the similar conditions as described in Example 2, except that neither drawing nor heat treatment was effected, to thereby obtain a 7-denier nylon 6 yarn of 5-filaments of 62% in elongation (No. 10).
  • the cross section coefficient (b/a) of this nylon 6 yarn was 0.92.
  • nylon 6 was spun by the high speed spinning same as above, to thereby obtain a 7-denier nylon 6 yarn of 5-filaments having a circular section and an elongation of 65% (No. 11).
  • nylon 6 yarns of Nos.1, 6, 7, 8, 10 and 11 were respectively used as covering yarns, to cover a 20-denier polyether polyurethane elastic fiber (spandex) used as a core yarn, at a core yarn draft ratio of 2.9 times, at a count of covering twist of 2,300 t/m in S direction or Z direction in a single layer, to prepare S-directed single covered elastic yarns and Z-directed single covered elastic yarns respectively.
  • spandex 20-denier polyether polyurethane elastic fiber
  • panty hose product of No. 6 corresponding to claims 5 and 6 were especially excellent in all of transparency, fabric appearance, soft touch and durability.
  • the nylon 6 yarn of No. 1 of Example 1 was used as covering yarns, to cover a 15-denier polyether polyurethane elastic fiber (spandex) used as core yarns, at a core yarn draft ratio of 2.9 times, at a count of covering twist of 1900, 2300, 2600 or 2900 t/m in a single layer, for preparing single covered elastic yarns (Nos. 12 to 15).
  • spandex 15-denier polyether polyurethane elastic fiber
  • nylon 6 having a relative viscosity in 98% sulfuric acid of 2.7, containing no titanium oxide and containing 0.5 wt% of ethylene-bis-stearylamide (EBA) and was melt-spun and then drawn under the similar conditions as described for No. 1 of Example 1, to thereby obtain a 10-denier nylon 6 yarn of 5-filaments having a cross section of a swollen quadrilateral.
  • the nylon 6 yarn was used as a covering yarn, to cover at a count of twist of 2600 t/m as described above, to thereby produce a single covered elastic yarn (No. 16).
  • panty hose using the fibers containing an acid amide compound specified in the present invention (No. 16) was especially excellent in transparency.
  • the nylon 6 yarn of No. 1 of Example 1 was used as a covering yarn, to cover a 10-, 15-, 20-, or 30-denier polyether polyurethane elastic fiber (spandex) which was used as a core yarn, at a core yarn draft ratio of 3.0, 2.8, 2.8, or 2.6 times, respectively, at a count of covering twist of 2500 t/m in a single layer, for preparing a single covered elastic yarn (Nos. 17 to 20).
  • spandex 30-denier polyether polyurethane elastic fiber
  • the nylon 6 yarn of No. 1 of Example 2 was used as a covering yarn, to cover a 15-denier polyether polyurethane elastic fiber (spandex) which was used as a core yarn, at a core yarn draft ratio of 3.0 times, at a count of covering twist of 2000 t/m in S direction for the first layer and at a count of twist of 2300 t/m in Z direction for the second layer, to thereby produce a double covered elastic yarn (No. 21).
  • spandex 15-denier polyether polyurethane elastic fiber
  • panty hose product having a leg portion knitting fabric formed by knitting only the covered elastic yarn using Super 4 knitting machine (400 needles) produced by Nagata Seiki Co., Ltd., and produced a panty hose product under similar condition as described to those in Example 1.
  • the panty hose product had excellent properties as shown below. Slippery feeling : o Luster feeling : o Soft touch : ⁇ Cool feeling : ⁇ Durability : o Fitting property : o
  • the present invention can provide hosiery with very good transparency, cool feeling, luster feeling and fabric appearance not achieved by the conventional every course hose, and excellent also in skin touch, soft handling touch, wearing comfort, fitting property and durability.
  • Thickness of core yarn (d) Core yarn draft ratio (times) Properties of the leg portion knitting fabric of hose Recovery stress 60% BP(g) Fitness Slippery feeling Midsummer wearing comfort 17 10 3.0 180 ⁇ ⁇ o 18 15 2.8 270 o o o 19 20 2.8 310 o o o 20 30 2.6 390 o o ⁇ - ⁇

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Socks And Pantyhose (AREA)
  • Knitting Of Fabric (AREA)
EP95931407A 1994-09-13 1995-09-13 Strümpfe Expired - Lifetime EP0729713B1 (de)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP21930294 1994-09-13
JP219302/94 1994-09-13
JP21930294 1994-09-13
PCT/JP1995/001825 WO1996008172A1 (fr) 1994-09-13 1995-09-13 Bas

Publications (3)

Publication Number Publication Date
EP0729713A1 true EP0729713A1 (de) 1996-09-04
EP0729713A4 EP0729713A4 (de) 1997-06-11
EP0729713B1 EP0729713B1 (de) 2001-05-09

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ID=16733369

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Application Number Title Priority Date Filing Date
EP95931407A Expired - Lifetime EP0729713B1 (de) 1994-09-13 1995-09-13 Strümpfe

Country Status (5)

Country Link
EP (1) EP0729713B1 (de)
KR (1) KR960705489A (de)
CN (1) CN1107466C (de)
DE (1) DE69520874T2 (de)
WO (1) WO1996008172A1 (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1746189A1 (de) 2005-07-19 2007-01-24 Cognon-Morin SA Coregarn zur Verwendung im Kompressionsartikel sowie Kompressionsartikel
CN100353674C (zh) * 2004-03-12 2007-12-05 东南大学 8b／10b编码的实现装置
ITRM20100289A1 (it) * 2010-05-31 2011-12-01 Marelli & Berta S A S Di Freudenbe Rg S P A Filato e relativo tessuto elastico di tipo canvas per interfodere, e procedimento per la loro preparazione .
CN104055230A (zh) * 2014-04-02 2014-09-24 浙江梦娜袜业股份有限公司 防水针织裤袜及其整理工艺

Families Citing this family (7)

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Publication number Priority date Publication date Assignee Title
DE102004024687B4 (de) * 2004-04-16 2008-03-27 Stefan Rosemann Socken
KR20140143417A (ko) * 2012-04-03 2014-12-16 도레이 카부시키가이샤 폴리아미드 흑원착사, 가연사, 커버링 탄성사 및 레그 니트
CN105586702B (zh) * 2014-10-21 2019-06-25 浙江宝娜斯袜业有限公司 一种钢丝裤袜的编织工艺
CN106120066B (zh) * 2016-07-13 2018-08-14 芦山华美包纱有限公司 一种编织均匀通透四路丝袜包覆纱的生产工艺
JP6687035B2 (ja) * 2016-07-26 2020-04-22 東レ株式会社 ポリアミドマルチフィラメントおよびそれを用いたレース編物、ストッキング
JP6809736B2 (ja) * 2019-03-01 2021-01-06 カイハラ産業株式会社 伸縮性織物、その製造方法及び製造装置
DE102019117666A1 (de) * 2019-07-01 2021-01-07 Falke Kgaa Beinbekleidungsstück

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US4801503A (en) * 1985-06-14 1989-01-31 E. I. Du Pont De Nemours And Company High tenacity polyhexamethylene adipamide yarn having ribbon cross-section filaments
DE3779807D1 (de) 1986-04-23 1992-07-23 Avl Medical Instr Ag Sensorelement zur bestimmung von stoffkonzentrationen.
JPH01207433A (ja) * 1988-02-09 1989-08-21 Teijin Ltd サポーティーストッキング用被覆弾性糸の製造方法
JPH0280635A (ja) 1988-09-13 1990-03-20 Toyobo Co Ltd 被覆弾性糸

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100353674C (zh) * 2004-03-12 2007-12-05 东南大学 8b／10b编码的实现装置
EP1746189A1 (de) 2005-07-19 2007-01-24 Cognon-Morin SA Coregarn zur Verwendung im Kompressionsartikel sowie Kompressionsartikel
ITRM20100289A1 (it) * 2010-05-31 2011-12-01 Marelli & Berta S A S Di Freudenbe Rg S P A Filato e relativo tessuto elastico di tipo canvas per interfodere, e procedimento per la loro preparazione .
WO2011151851A3 (en) * 2010-05-31 2012-07-19 Marelli & Berta S.A.S. Di Freudenberg S.P.A. Elastic cover yarn for interlinings, interlining fabric and process for manufacturing such yarn and fabric
CN104055230A (zh) * 2014-04-02 2014-09-24 浙江梦娜袜业股份有限公司 防水针织裤袜及其整理工艺

Also Published As

Publication number Publication date
WO1996008172A1 (fr) 1996-03-21
CN1135709A (zh) 1996-11-13
EP0729713A4 (de) 1997-06-11
CN1107466C (zh) 2003-05-07
EP0729713B1 (de) 2001-05-09
DE69520874T2 (de) 2001-10-11
DE69520874D1 (de) 2001-06-13
KR960705489A (ko) 1996-11-08

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