JP5748442B2 - Knitted fabrics and garments containing core-sheath conjugate fibers - Google Patents

Description

  The present invention relates to a knitted fabric that exhibits a metallic luster even if it does not contain a metal as a material, and has a high stretch elasticity.

Conventionally, the following are known as knitted fabrics having metallic luster. For example, (1) a knitted fabric using lame yarn, (2) a knitted fabric obtained by processing aluminum or stainless steel by vacuum vapor deposition or sputter vapor deposition, and (3) a resin mixed with reflector beads or aluminum foil pieces. Coated knitted fabric (Patent Document 1), (4) knitted fabric (Patent Document 2) that makes use of interference of light on the surface of the knitted fabric to develop an iridescent luster.
However, the knitted fabrics of the above (1) to (4) have a poor texture because they contain metal, and are not suitable for clothing for people with metal allergies.
On the other hand, as shown in Patent Documents 3 and 4, a fabric having a metallic luster without including a metal material has been proposed. However, the fabric described in Patent Document 3 is limited to warp knitted mesh fabric, and does not have the elasticity of stretch as that of weft knitted fabric. In addition, the fabric described in Patent Document 4 is limited to monofilaments, and is not comfortable to wear as compared to the case of using multifilaments, and has a problem of low stretch elasticity because it is a woven fabric. .

Japanese Patent Laid-Open No. 10-131033 Japanese Patent Application Laid-Open No. 07-054268 JP 11-117155 A JP 2007-146339 A

  An object of the present invention is to solve the above-mentioned problems and to provide a knitted fabric that exhibits metallic luster even if it does not contain a metal as a raw material and has high stretch elasticity.

  As a result of intensive research to solve the above problems, the present inventors have knitted the base knitting yarn and the core-sheath conjugate fiber with a spliced knitting to exhibit a metallic luster and further have high stretch elasticity. I found that a knitted fabric can be obtained.

The present invention has been completed based on such findings.
Item 1. A knitted fabric having a portion obtained by knitting a base yarn and a core-sheath conjugate fiber by a spliced yarn.
Item 2. Item 2. The knitted fabric according to item 1, wherein at least one of the four consecutive courses is knitted with a spliced yarn.
Item 3. Item 3. The knitted fabric according to Item 1 or 2, wherein the core-sheath conjugate fiber has a fineness of 20 to 120 dtex.
Item 4. Item 4. The knitted fabric according to any one of Items 1 to 3, wherein an area ratio of the core part to the sheath part in the fiber cross section of the core-sheath conjugate fiber is 95/5 to 30/70.
Item 5. Item 5. The knitted fabric according to any one of Items 1 to 4, wherein the core-sheath conjugate fiber includes polyurethane as a core component and a thermoplastic elastomer resin as a sheath component.
Item 6. Item 6. The knitted fabric according to any one of Items 1 to 5, wherein the core-sheath conjugate fiber includes a polyurethane-based elastomer as a core component.
Item 7. Item 7. The knitted fabric according to any one of Items 1 to 6, wherein the core-sheath conjugate fiber includes a polyester-based elastomer as a sheath component.
Item 8. Any one of Items 1 to 7, wherein the difference between the maximum value and the minimum value of the light reflectance measured from the wale direction or the course direction is 1 or more on the side where the core-sheath conjugate fiber of the knitted fabric is exposed. The knitted fabric described in the item.
Item 9. The clothing containing the knitted fabric of any one of claim | item 1 -8.

Hereinafter, the present invention will be described in detail.
I. Base knitting yarn The base knitting yarn used in the knitted fabric of the present invention is not particularly limited as long as it is generally used for clothing materials. However, synthetic fibers such as polyester, polypropylene, nylon, acrylic, acetate, Semi-synthetic fibers such as mixes, regenerated fibers such as rayon, polynosic, cupra and lyocell, and natural fibers such as cotton, hemp, silk and hair are used. Among these, from the viewpoint of stretch elasticity and dyeability, it is preferable to use filament twisted yarn (FTY) such as single covered yarn (SCY) or double covered yarn (DCY), wooly nylon or the like.

II. Core-sheath conjugate fiber As the core-sheath conjugate fiber used in the knitted fabric of the present invention, Japanese Patent Application Laid-Open No. 2007-077756, International Publication No. 2007/123214, Japanese Patent Application Laid-Open No. 2008-231606, Japanese Patent Application Laid-Open No. 2008-231614. And the core-sheath conjugate fiber described in the publication No ..

  That is, a conjugate fiber comprising an elastomer resin (A) having stretch elasticity and an elastomer resin (B) having stretch elasticity and having a permanent elongation of 25 to 70% and a tensile elongation of 100 to 800%, A highly sheathable core-sheath conjugate fiber comprising the elastomer resin (A) in the core part and the elastomer resin (B) in the sheath part.

  The core-sheath conjugate fiber is characterized in that a specific elastomer resin (B) is employed not only in the core part but also in the sheath part in order to increase the elastic elasticity of the fiber.

  In addition, the core-sheath conjugate fiber has (1) a composite spinning process so that the elastomer resin (A) becomes the core part and the elastomer resin (B) becomes the sheath part, and (2) the obtained fiber is heat-treated. It is characterized by being excellent in transparency, elastic elasticity, strength and elongation by being manufactured in the step of promoting crosslinking and (3) the step of subsequent stretching treatment. However, this step is not particularly limited, and may be a fiber obtained only by the step (1) or a fiber obtained by the steps (1) and (2).

  The elastomer resin (A) having stretch elasticity constituting the core portion of the core-sheath conjugate fiber used in the knitted fabric of the present invention returns to the original length even when stretched (the yield point is within the stretchable range). There is no particular limitation as long as it is a thermoplastic elastomer having the property of not possessing), that is, rubber elasticity (returning to within 10% in the hysteresis curve). Examples of the elastomer resin (A) include polyurethane and polystyrene butadiene block copolymer, and polyurethane is particularly preferable.

  The tensile strength (JIS K7311) of the elastomer resin (A) is preferably about 30 to 60 MPa, more preferably about 45 to 60 MPa. Further, the tensile elongation (JIS K7311) is about 400 to 900%, more preferably 400 to 600%. The surface hardness A (JIS K7311) is about A70 to 98, preferably about A80 to 95, and more preferably A85 to 95. When the surface hardness A is less than A70, it is difficult to ensure the strength, and when it exceeds A98, the elongation and the stretch elasticity tend to be extremely deteriorated.

  Specific examples of the elastomer resin (A) include, for example, Clamillon U (manufactured by Kuraray Co., Ltd.) 3195, 8175, and milactolan (manufactured by Nippon Polyurethane Industry Co., Ltd.) P485, P495.

  As an example of a method for producing the elastomer resin (A), a method for producing a polyurethane elastomer resin is shown below. The polyurethane elastomer resin can be produced, for example, from an aromatic polyisocyanate and a polyol using a known method such as a one-shot method or a prepolymer method.

  As the aromatic polyisocyanate as a raw material, an aromatic diisocyanate having 6 to 20 carbon atoms (excluding carbon in the NCO group, the same shall apply hereinafter), modified products of these aromatic diisocyanates (carbodiimide group, uretdione group, uretoimine group, A diisocyanate-modified product having a urea group and the like, and a mixture of two or more thereof.

  Specific examples of aromatic polyisocyanates include 1,3- and / or 1,4-phenylene diisocyanate, 2,4- and / or 2,6-tolylene diisocyanate, 2,4′- and / or 4,4. Examples include '-diphenylmethane diisocyanate (hereinafter abbreviated as MDI), 4,4'-diisocyanatobiphenyl, 3,3'-dimethyl-4,4'-diisocyanatodiphenylmethane, 1,5-naphthylene diisocyanate, and the like. . Of these, MDI is particularly preferable.

  Examples of the polyol that is a raw material include polyether-based, polyester-based, polycarbonate-based, and aliphatic-based polyols, and polyether-based or polyester-based polyols are particularly preferable.

  The number average molecular weight of the polyol is preferably 300 or more, preferably 1000 or more, more preferably 2000 or more, from the viewpoint of the soft feeling of the fiber produced from this material, and preferably 4000 or less from the viewpoint of the elasticity of the fiber. Preferably it is 3500 or less, More preferably, it is 3000 or less.

  The elastomer resin (B) constituting the sheath portion of the core-sheath conjugate fiber used in the knitted fabric of the present invention is a thermoplastic elastomer resin having stretch elasticity and a permanent elongation of 25 to 70%. Permanent elongation is defined in JIS K 6301. That is, this resin (B) has the property that when it is stretched to 100% or more, it has stretch elasticity but does not return to its original shape but returns to a stable shape after being stretched.

  This is because, in the original form of the elastomer resin (B), the hard segment and the soft segment constituting the elastomer resin (B) are in a random state. It is considered that only the segment has stretch elasticity. The conjugate fiber of the present invention skillfully utilizes this property of the elastomer resin (B) and exhibits high supportability.

  The permanent elongation (JIS K 6301) of the elastomer resin (B) is about 25 to 70%, preferably about 30 to 70%, more preferably about 40 to 60% at 100% elongation. The permanent elongation is determined by applying a tensile load to the dumbbell-shaped test piece, stretching it to a specified elongation of 100% (double), holding it for 10 minutes, then quickly removing the load and leaving it for 10 minutes. It is stipulated that the rate is obtained with respect to the original length and set as the permanent elongation rate (%). When such a value is less than 25%, high supportability as a conjugate fiber cannot be obtained. On the other hand, if it exceeds 70%, it becomes small due to the properties of the elastic body, plastic deformation becomes the main, and the properties of the elastic body, that is, the stretch elasticity is lowered.

  The tensile strength (ASTM D638) of the elastomer resin (B) is preferably about 10 to 40 MPa, more preferably about 25 to 40 MPa. Further, the tensile elongation (ASTM D638) is about 100 to 800%, more preferably 400 to 600%. If this value is less than 100%, it cannot be used for applications requiring elongation due to insufficient elongation, and if it exceeds 800%, the strength is generally low and high supportability cannot be obtained. Further, the surface hardness D (ASTM D2240) is about D30 to 70, further preferably D35 to 60, and more preferably D45 to 60. When it is less than D30, since the surface hardness becomes soft, it becomes difficult to maintain the shape after stretching, and at the same time, the touch tends to deteriorate. On the other hand, when D70 is exceeded, the shape retention (setting property) after stretching increases, but the elastomer portion decreases and the stretch elasticity tends to deteriorate.

  Specific examples of the elastomer resin (B) having the above characteristics include urethane elastomer (TPU), polyester elastomer, polyamide elastomer, styrene-butadiene elastomer and the like. Any of these elastomer resins can be produced by a known method, or a commercially available product can be used.

  Examples of the urethane elastomer include a block copolymer composed of a soft segment composed of a polyol component and a hard segment composed of an organic polyisocyanate component. Specific examples include polyester polyurethane elastomers, polycaprolactone polyurethane elastomers, polycarbonate polyurethane elastomers, polyether urethane elastomers, and the like. Examples thereof include Kuramylon manufactured by Kuraray Co., Ltd. and Pandex manufactured by DIC Bayer Polymer Co., Ltd.

  As a polyester-type elastomer, the polyether (or polyester) ester block copolymer comprised from the hard segment which consists of an aromatic polyester component, and the soft segment which consists of a polyether component or a polyester component is mentioned, for example. Examples of the hard polyester aromatic polyester component include polybutylene terephthalate (PBT). Examples of the soft segment polyether component or polyester component include polytetramethylene glycol (PTMG) and polycaprolactone (PCL). Can be mentioned. Any of these can be used in the present invention, but a polyetherester block copolymer is preferably used.

  Specifically, for example, perprene (P type, S type, etc.) manufactured by Toyobo Co., Ltd., Hytrel manufactured by Toray DuPont, etc. are exemplified. Further, for example, polyester elastomers described in JP-A-11-302519, JP-A-2000-143954 and the like can also be used.

  Examples of the polyamide-based elastomer include a block copolymer composed of a hard segment composed of a polyamide component and a soft segment composed of a polyether component, a polyester component, or both components. Examples thereof include Pevacs manufactured by Arkema Co., Ltd., and PAE series manufactured by Ube Industries.

  Examples of the styrene-butadiene elastomer include a block copolymer composed of a hard segment made of a polystyrene component and a soft segment made of a polyolefin component. Specific examples include styrene-ethylene-butylene-styrene block copolymer (SEBS).

  The core portion and the sheath portion of the core-sheath conjugate fiber of the present invention may have a configuration in which the core component is exposed on the surface in addition to the eccentric circular shape and the concentric circular shape. The occupation ratio of the core portion made of the elastomer resin (A) with respect to the fiber cross-sectional area may be about 30 to 95%, preferably about 40 to 95%, more preferably about 50 to 90%. In other words, the area ratio between the core portion made of the elastomer resin (A) and the sheath portion made of the elastomer resin (B) is about 95/5 to 30/70, preferably about 95/5 to 40/60. Preferably it is about 90 / 10-50 / 50. Within this range, when the base knitting yarn and the spliced yarn are knitted, the knitted fabric is glossy and has elastic elasticity. If the occupancy ratio of the core portion is less than 30%, the occupancy ratio of the elastomer resin (B) becomes high, so that it is difficult to obtain high elastic elasticity. It is difficult to recover.

  The diameter of the core-sheath conjugate fiber used in the knitted fabric of the present invention is not particularly limited, but is usually about 20 to 120 μm, preferably about 30 to 100 μm.

  Moreover, the core-sheath conjugate fiber used for the knitted fabric of the present invention has a feature that when it is knitted as it is, the thickness is thin and the transparency is high.

III. Production method of the core-sheath conjugate fiber The core-sheath conjugate fiber used in the knitted fabric of the present invention was obtained by melting the elastomer resin (A) and the elastomer resin (B) at temperatures suitable for spinning, respectively, and having a composite die. It can be manufactured by complex spinning with a die such that the elastomer resin (A) is the core portion and the elastomer resin (B) is the sheath portion. If such composite spinning is possible, a known spinning method, spinning apparatus, or the like can be employed. The area ratio between the core portion and the sheath portion in the fiber cross section can be appropriately adjusted by changing the discharge amount of each resin, and is preferably about 95/5 to 30/70 as described above.

  Further, in order to impart dyeability to the fiber, it is possible to modify the resin (for example, nylon, polyester, etc.) that can be dyed on the elastomer resin (B) of the sheath portion by alloying. Examples of resins that can be dyed include polyamide-based, polyester-based, acrylic-based, and vinylon-based resins. Preferred examples include polyamide-based and polyester-based resins. These blending amounts are determined according to the dyeability of the elastomer (B), but the preferred lower limit of the resin content is 1% by weight and the preferred upper limit is 30% by weight. A more preferred upper limit is 10% by weight. If it is less than 1% by weight, the color developability by dyeing is low, and if it exceeds 30% by weight, the strength and elongation of the fiber may be lowered. Further, the transparency is also lowered, and gloss cannot be imparted to the knitted fabric obtained by adding the core-sheath conjugate fiber to the knitted yarn and knitting the knitted yarn. Also, the spinnability is deteriorated.

  Moreover, as these production methods, the above resin can be mixed with the elastomer resin (B) and put into an extruder, but it is desirable to uniformly disperse in order to obtain stable physical properties. For this reason, it is more desirable to prepare the compound raw material with a twin-screw kneader and put it into the extruder.

  Further, the core-sheath conjugate fiber of the present invention can be modified by dispersing inorganic fine particles or the like on the surface of the elastomer resin (B) in the sheath part in order to improve the touch.

Examples of inorganic fine particles include, but are not limited to, calcium carbonate such as light calcium carbonate and heavy calcium carbonate; barium carbonate; magnesium carbonate such as basic magnesium carbonate; kaolin, talc, calcium sulfate, barium sulfate, titanium dioxide, oxidation titanium,
Zinc oxide, magnesium oxide, ferrite powder, zinc sulfide, zinc carbonate, satin white,
Diatomaceous earth such as calcined diatomaceous earth; silica such as calcium silicate, aluminum silicate, magnesium silicate, amorphous silica, amorphous synthetic silica, colloidal silica; colloidal alumina, pseudoboehmite, aluminum hydroxide, magnesium hydroxide, alumina, lithopone And mineral pigments such as zeolite, aluminosilicate, activated clay, bentonite and sericite. These may be used alone or in combination of two or more. Of these, titanium oxide, zinc oxide, barium sulfate, and silica are preferable.

  In addition, the shape of the inorganic fine particles is not particularly limited, and examples thereof include regular or atypical products such as a spherical shape, a needle shape, and a plate shape.

  The preferable lower limit of the average particle diameter of the inorganic fine particles is 0.2 μm, and the preferable upper limit is 3 μm. If the thickness is less than 0.2 μm, the effect of improving discomfort such as stickiness when wet may be insufficient. If the thickness exceeds 3 μm, the texture and texture may be impaired, and the strength of the fiber may be reduced. It may decrease.

  The minimum with preferable content of the said inorganic fine particle is 0.05 weight%, and a preferable upper limit is 2 weight%. A more preferred upper limit is 0.5% by weight. If it is less than 0.05% by weight, the effect of improving discomfort such as stickiness when wet may be insufficient, and if it exceeds 2% by weight, the transparency of the fiber may be lowered. Further, the transparency is lowered, and gloss cannot be imparted to the knitted fabric obtained by adding the core-sheath conjugate fiber to the knitted yarn and knitting the spliced yarn. Also, the spinnability is deteriorated.

  Moreover, as these production methods, it is possible to mix inorganic fine particles with the elastomer resin (B) and put them into an extruder. However, uniform dispersion is desirable for obtaining stable physical properties. For this reason, it is more desirable to prepare the compound raw material with a twin-screw kneader and put it into the extruder.

IV. Knitting method The knitted fabric of the present invention can be obtained by knitting a spliced yarn by adding a core-sheath conjugate fiber as a spliced yarn to the knitted yarn.

  "Split yarn knitting" is a kind of knitting method, also called plating knitting, and together with ground knitting yarn, put another yarn into the same yarn feeder while adjusting the tension, and display only each yarn on the front and back This is a knitting method.

  That is, the knitted fabric of the present invention can be obtained by knitting the core-sheath conjugate fiber together with the ground knitting yarn while adjusting the tension in the same yarn feeder. By the knitting method, a knitted fabric in which only the core-sheath conjugate fiber and the ground knitting yarn are exposed on the front and back sides is obtained. The knitted fabric obtained by the knitting method is a core-sheath conjugate in which the surface where the highly transparent core-sheath conjugate fiber is exposed becomes a highly aesthetic knitted fabric having a metallic luster and functions as an elastic yarn. Since the fibers are knitted while being aligned, a knitted fabric with high stretch elasticity is obtained.

  In the knitting of the knitted fabric of the present invention, it is desirable that the spliced yarn is knitted in at least one of the four consecutive courses. “The spliced yarn is knitted in at least one of the four consecutive courses” means, for example, in the knitting shown in the knitting organization charts of FIGS. 1 and 2, respectively (a) and (b) In this, it means that the base yarn and the core-sheath conjugate fiber are knitted by the spliced yarn. The remaining (c) and (d) may be knitted with only the core-sheath conjugate fiber or the ground yarn. Alternatively, in the knitting shown in the knitting organization chart of FIG. 3, the knitting of the ground knitting yarn and the core-sheath conjugate fiber in the knitting yarn is knitted in (a) and (c). The remaining (b) and (d) may be knitted with only the core-sheath conjugate fiber or the ground yarn.

  The fineness of the core-sheath conjugate fiber used in the knitted fabric of the present invention is preferably about 20 to 120 dtex. Particularly preferred is 30 to 100 dtex. When the fineness is smaller than 20 dtex, the effect as an elastic yarn is weakened and the strength is inferior, so that it is difficult to knit the spliced yarn. In addition, the glossiness is also faded. Moreover, when it exceeds 120 decitex, the knitted fabric obtained will become thick too much.

  The knitting structure is not particularly limited as long as it is a weft knitting, but a milling knitting or a tentacle knitting is preferable from the viewpoint of stretch elasticity and thickness.

  The knitted fabric of the present invention is a knitted fabric in which the core-sheath conjugate fiber side appears only on one side by knitting the base knitting yarn and the core-sheath conjugate fiber with a spliced yarn. The fiber side surface is a knitted fabric having a metallic luster and high aesthetics. Moreover, since the core-sheath conjugate fibers that function as elastic yarns are knitted together, a knitted fabric with high stretch elasticity can be obtained.

  The knitted fabric of the present invention has a metallic luster and is excellent in stretch elasticity. Therefore, the knitted fabric has good aesthetics and stretch elasticity, and is particularly suitable as a material for underwear such as tights, leggings, arm covers, and camisole. Used.

1 is a knitting organization chart for a two-color jacquard knitting according to the present invention, which is a kind of milling knitting. FIG. It is a knitting composition diagram for change stripe knitting of the present invention which is a kind of milling knitting. It is a knitting composition diagram for change reversible knitting of the present invention which is a kind of milling knitting. It is the graph which showed the difference of the maximum value and minimum value of the light reflectivity in each light incident angle of the Example and comparative example which are shown by Table 2. FIG.

  The present invention will be described more specifically with reference to the following examples and comparative examples. In addition, this invention is not limited to the following embodiment.

・ Knitted fabric production example 1
Thermoplastic polyurethane (pandex T-1190N manufactured by DIC Bayer Polymer Co., Ltd., 1/2 method melting temperature 214 ° C., surface hardness A92) and polyester elastomer (Perprene P-90B manufactured by Toyobo Co., Ltd., 1 / 2 method melting temperature of 197 ° C., surface hardness D52) were respectively heated and melted at a barrel temperature of 170 to 205 ° C. and 180 to 220 ° C. by a single screw extruder, weighed with each gear pump, and then heated to 225 ° C. Using a die, the composite polyurethane was concentrically spun so that the thermoplastic polyurethane became a core portion and the polyester elastomer became a sheath portion.

  The winding speed is 800 m / min, the silicon oil agent is adhered and wound up in an unstretched state, and then subjected to a heat treatment for 12 hours (in a wet heat environment of 60 ° C. and 55% RH) in a separate process. A normal temperature roller that rotates a thread fed at 100 m / min with a roller at approximately the same speed (104 m / min), then a roller that repeatedly rotates 300 m / min-0 m / min every second by a stepping motor, and further stepping A roller that repeatedly rotates at a rate of 0 m / min to 300 m / min every second by a motor, and fibers fed in order by each of these rollers were obtained. Moreover, the occupation ratio of the core part with respect to the fiber cross-sectional area of the obtained fiber was 90%.

Production Example 2
A core-sheath conjugate fiber was produced in the same manner as in Production Example 1 except that Perprene P-55B (manufactured by Toyobo Co., Ltd., surface hardness D44) was used as the polyester elastomer.

Production Example 3
A core-sheath conjugate fiber was produced in the same manner as in Production Example 1 except that Pandex T-1195N (manufactured by DIC Bayer Polymer Co., Ltd., surface hardness A95) was used as the thermoplastic polyurethane.

Production Example 4
A core-sheath conjugate fiber was produced in the same manner as in Production Example 1 except that Pandex T-1195N was used as the thermoplastic polyurethane and Perprene P-55B was used as the polyester elastomer.

Production Example 5
A core-sheath conjugate fiber was produced in the same manner as in Production Example 1 except that Pandex T-1495N (manufactured by DIC Bayer Polymer Co., Ltd., surface hardness A95) was used as the thermoplastic polyurethane.

Example 1
Base knitting yarn (Woolley nylon manufactured by Toray Industries, Ltd., fineness 40 dtex) and core-sheath conjugate fiber obtained in Production Example 1 (core component: T-1190, sheath component: P-90B, core ratio 90% , Fineness 30 decitex) and 18 gauge needle milling machine with needle selection function, put in the same yarn feeder, and in the knitting composition diagram (a) and (b) shown in Fig. 2, the ground knitting yarn and core sheath conjugate Using the fiber as a splicing yarn and using only the core-sheath conjugate fiber in (c) and (d), a knitted fabric having a changed stripe, which is a kind of milling, was obtained. After sufficiently washing and removing the fiber oil agent, only the plain knitting yarn was dyed to a general black color.

Examples 2 to 8 and 10
A knitted fabric in which a spliced yarn was knitted was obtained in the same manner as in Example 1 except that the core-sheath conjugate fibers were changed to those shown in Table 1, respectively.

Example 9
In (a) and (b) of the knitting composition diagram shown in FIG. 1, a knitting method using a knitted yarn and a core-sheath conjugate fiber as a splicing yarn and (c) and (d) using only a core-sheath conjugate fiber A knitted fabric in which a spliced yarn was knitted was obtained in the same manner as in Example 1 except for changing.

Example 11
In the knitting method shown in FIG. 3 (a) and (c), a knitting method using a plain knitting yarn and a core-sheath conjugate fiber as an attachment yarn, and (b) and (d) using only a core-sheath conjugate fiber. A knitted fabric in which a spliced yarn was knitted was obtained in the same manner as in Example 1 except for changing.

Example 12
Example 1 and Example 1 except that only the core-sheath conjugate fiber was dyed to the general color yellow, and then only the base knitting yarn was dyed to the general color black instead of dyeing only the plain knitting yarn to the general color black. Similarly, a knitted fabric knitted with a spliced yarn was obtained.

Example 13
A knitted fabric in which a spliced yarn was knitted was obtained in the same manner as in Example 1 except that only the ground knitting yarn was dyed in blue.

Example 14
A knitted fabric in which a spliced yarn was knitted was obtained in the same manner as in Example 1 except that only the ground knitting yarn was dyed in the general color red.

Comparative Example 1
An 18-gauge milling machine with a needle-selection function is attached with (a), (b), (c) and (d) in the knitting composition diagram shown in FIG. 2 using only the same wooly nylon as in Example 1. Without knitting the yarn knitting, we obtained a knitted fabric with a change stripe, which is a kind of milling knitting. After sufficiently washing and removing the fiber oil, the wooly nylon was dyed in a general black color.

Comparative Example 2
A knitted fabric was obtained in the same manner as in Comparative Example 1 except that wooly nylon was dyed in the general color yellow.

  Table 1 shows the compositions of Examples and Comparative Examples.

-Evaluation of metallic luster of knitted fabric In Examples 1 to 14 and Comparative Examples 1 and 2, the knitted fabric on the side where the core-sheath conjugate fiber is exposed (surface knitted fabric in Table 1) is a digital variable angle gloss. Using the total UVG-4D (manufactured by Suga Test Instruments Co., Ltd.), the incident angle / light receiving angle were set to 45 ° / 45 °, 60 ° / 60 °, 75 ° / 75 °, 85 ° / 85 °, respectively. As for other conditions, according to JIS L-1096, light was irradiated from the wale direction and the course direction of the knitted fabric, and the light reflectance was measured. Then, the difference between the maximum value and the minimum value of the light reflectance was obtained in the wale direction and the course direction. The results are as shown in Table 2.

  As shown in Table 2 and FIG. 4, in the knitted fabrics of Examples 1 to 14 which are the present invention products, the difference between the maximum value and the minimum value of the light reflectance in either the wale direction or the course direction is larger than 1. In Comparative Examples 1 and 2, both are 0.5 or less. When the degree of reflection of light changes greatly, it is recognized by the human eye as metallic luster (with glare), and therefore the knitted fabrics shown in Examples 1 to 14 of the present invention exhibit high metallic luster. It can be said. On the other hand, the knitted fabric shown in Comparative Example 1 has almost no reflection and has no metallic luster.

Claims (9)

A ground knitting yarns and core-sheath conjugate fibers, have a portion knitted with subscript thread knitting, a knitted fabric having a metallic luster,
Of the four consecutive courses, the core-sheath conjugate fiber is knitted in all courses,
At least one course is knitted by spliced yarn with the ground knitting yarn and the core-sheath conjugate fiber,
The ground knitting yarn is dyed, and the core-sheath conjugate fiber is dyed undyed or yellow,
On the side where the core-sheath conjugate fiber of the knitted fabric is exposed, the difference between the maximum value and the minimum value of the light reflectance measured from the wale direction or the course direction is 1 or more.
A knitted fabric characterized by that. The knitted fabric according to claim 1, wherein the ground knitting yarn is dyed black, blue or red. The knitted fabric according to claim 1 or 2, wherein two courses among four consecutive courses are knitted with a spliced yarn knitting the base knitting yarn and the core-sheath conjugate fiber. The knitted fabric according to any one of claims 1 to 3, wherein the fineness of the core-sheath conjugate fiber is 20 to 120 dtex. The knitted fabric according to any one of claims 1 to 4 , wherein an area ratio of the core portion to the sheath portion in the fiber cross section of the core-sheath conjugate fiber is 95/5 to 30/70. The knitted fabric according to any one of claims 1 to 5 , wherein the core-sheath conjugate fiber includes polyurethane as a core component and a thermoplastic elastomer resin as a sheath component. The knitted fabric according to any one of claims 1 to 6 , wherein the core-sheath conjugate fiber includes a polyurethane-based elastomer as a core component. The knitted fabric according to any one of claims 1 to 7 , wherein the core-sheath conjugate fiber includes a polyester-based elastomer as a sheath component. A garment comprising the knitted fabric according to any one of claims 1 to 8.

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