Pigmented false twist textured yarn and method of making and use thereof

Abstract

The present application discloses a kind of feather mixed false twist processing silk, the feather mixed false twist processing silk includes polyester filament A and polyester filament B, the polyester filament A and / or polyester filament B has thick and thin structure, part thick section in the thick and thin structure is cut off to form feather; the number of feather more than 2mm is below 100 / 1000m.The anti-pilling effect of the feather mixed false twist processing silk is good.At the same time, the fabric made of the false twist processing silk has different color natural mottling after dyeing, and the color mixing effect is good.

Description

TECHNICAL FIELD

[0001] The present application relates to a false twist processing yarn and a preparation method thereof, in particular, to a false twist processing yarn with fluff and natural mottling feeling with different colors after dyeing and a preparation method thereof. BACKGROUND

[0002] Cotton fiber is a natural fiber for traditional spinning, which has the advantages of loft, soft touch, soft hand feeling, and soft surface gloss. With the increasing market demand, the supply of cotton fiber is under certain pressure, and the planting of cotton is easily affected by the climate, so the supply of cotton raw materials is very unstable. Therefore, it is necessary to use chemical fibers to replace cotton fibers to produce imitation cotton fibers which have the advantages of cotton and can solve the shortcomings of cotton.

[0003] Although there are various forms of imitation cotton fiber products on the market, most of them produce fluff through forced fluffing process in fabric finishing and processing, which increases production cost and lacks softness and dryness of the imitation cotton fabric because the fluff is concentrated on the surface of the fabric. In addition, the colors of the imitation cotton products on the market are mostly single, affecting the visual effect.

[0004] Chinese patent CN110029419A discloses a polyester mixed false twist processing yarn, which contains polyester filament A and polyester filament B, and the polyester filament A and the polyester filament B both have thick and thin structure. Although the processing yarn realizes the effect of color mixing, it does not have the effect of imitation cotton, and the fabric woven has low softness and poor comfort.

[0005] Chinese patent CN108118418A discloses a fluff-like composite textured yarn and a preparation method thereof, which contains high-strength textured yarn and low-strength textured yarn, and part of the filaments of the low-strength textured yarn are cut off to form fluff on the surface of the composite textured yarn, so that the fabric obtained has a fluff feeling similar to cotton yarn. However, the length of the fluff on the surface of the composite textured yarn is difficult to control, and the number of long fluff is too large, which is easy to form a ball and affects the visual effect. SUMMARY

[0006] The purpose of the present application is to provide a false twist processing yarn with fluff equivalent to cotton yarn, which is not easy to form a ball and has a color mixing effect.

[0007] The technical solution of the present application is as follows:

[0008] The false twist processing yarn with fluff and color mixing comprises polyester filament A and polyester filament B, the polyester filament A and / or the polyester filament B have thick and thin structure, part of the thick sections in the thick and thin structure are cut off to form fluff, and the number of fluff with a length of more than 2mm is less than 100.

[0009] The number of hairs larger than 2mm is preferably less than 50.

[0010] The number of hairs larger than 1 mm in the processed filament is preferably 300 to 1500, more preferably 500 to 1000.

[0011] The polyester filaments A and B in the processed yarn have two different dyeing mechanisms.

[0012] The fineness of both polyester filament A and polyester filament B is preferably below 2.00 dtex.

[0013] This invention also discloses a method for preparing the above-mentioned woolly mixed-color false-twist processed yarn: polyester pre-oriented yarn A and polyester pre-oriented yarn B are fed into the first roller through the same spindle position, extended by a hot roller, and then enter the second roller. After being heated in the first hot box, they are introduced into a false twister for twisting, and finally pass through the third roller, a winding device, and the fourth roller to obtain the woolly mixed-color false-twist processed yarn. The ratio of untwisting tension to twisting tension (K value) is 0.30 to 1.00.

[0014] The temperature of the first hot box is preferably 150-220℃.

[0015] The ratio between the first roller and the second roller is preferably 1.050 to 1.250.

[0016] The false-twisted yarn of this invention has an excellent cotton-like feel, with few fibers larger than 2mm, and good anti-pilling effect. Furthermore, fabrics made from this false-twisted yarn, after dyeing, exhibit natural mottled patterns in different colors and have good color mixing effects. Attached Figure Description

[0017] Figure 1 This is a schematic engineering drawing of the method for preparing false-twisted processed yarn of the present invention.

[0018] In the diagram: 1. Polyester pre-oriented yarn A; 2. Polyester pre-oriented yarn B; 3. First roller; 4. Hot roller; 5. Second roller; 6. First hot box; 7. Cooling plate; 8. False twister; 9. Third roller; 10. Fourth roller.

[0019] Figure 2 This is a side view of the false twisted yarn of the present invention.

[0020] Figure 3 This is the elongation curve of the unstretched yarn. Detailed Implementation

[0021] Although there are existing technologies for processing fuzzy yarns, the fuzzy yarns produced often have drawbacks such as excessively long fuzz and the resulting fabrics being prone to pilling.

[0022] This invention limits the number of fibers larger than 2mm on the processed yarn to less than 100, resulting in a fabric with good anti-pilling properties, excellent color blending, and a superior hand feel. If the number of fibers larger than 2mm on the processed yarn exceeds 100, the anti-pilling effect of the fabric deteriorates, and as the number of fibers larger than 2mm increases, the yarn strength also decreases, and the fabric's durability fails to meet requirements. Therefore, to obtain a superior anti-pilling effect, the number of fibers larger than 2mm on the processed yarn is preferably less than 50.

[0023] To achieve a superior cotton-like feel, the processed yarn of the present invention preferably contains 300 to 1500 fibers larger than 1 mm. If the number of fibers larger than 1 mm is too small, the resulting fabric will have a stiff hand feel; if the number of fibers larger than 1 mm is too large, the resulting fabric will have poor anti-pilling properties. More preferably, the processed yarn of the present invention contains 500 to 1000 fibers larger than 1 mm.

[0024] The fineness of both polyester filament A and polyester filament B described in this invention is preferably below 2.00 dtex. If the fineness of the filament is too large, it will be difficult to generate fuzz.

[0025] During the production of false twisted yarn, uneven stretching at the hot roller creates a structure of thick and thin sections. The different crystallinity and orientation of the thick and thin sections result in differences in the dyeing rate of dyes and / or pigments during dyeing, thus enabling the hair-blend false twisted yarn of the present invention to have a color-blending effect.

[0026] To achieve superior color mixing, this invention preferably uses polyester filament A and polyester filament B with different dyeing mechanisms. Different dyeing mechanisms refer to different ways the dye binds to the polymer. For example, if polymer A is ordinary PET (intercalation dyeing), polymer B can be a non-intercalation dyeing polymer such as cationic (binding dyeing).

[0027] The present invention also discloses a method for preparing the above-mentioned hairy mixed color false twisted yarn, wherein polyester pre-oriented yarn A and polyester pre-oriented yarn B are fed into the first roller through the same spindle position, extended by the hot roller and then enter the second roller, heated by the first hot box and then introduced into the false twister for twisting, and finally passed through the third roller, the cross-linker and the fourth roller to obtain the hairy mixed color false twisted yarn.

[0028] The ratio of the tension during the untwisting process at the rear end of the false twister to the tension during the twisting process at the front end of the false twister is 0.30 to 1.00. When the ratio of the untwisting tension to the twisting tension (K value) is less than 0.30, although the number of fibers larger than 2mm is small, the number of fibers larger than 1mm is also small, resulting in a stiff hand feel that does not achieve the soft hand feel of cotton fabric. When the ratio of the untwisting tension to the twisting tension (K value) is greater than 1.00, the number of fibers on the processed yarn is too large, the strength of the processed yarn is severely reduced, affecting the fastness of the subsequent fabric, and the number of fibers larger than 2mm exceeds 100, resulting in severe pilling and poor quality of the fabric.

[0029] In order to obtain false-twisted yarn with excellent anti-pilling effect, the present invention preferably sets the temperature of the first heating box to 150-220°C. If the temperature of the first heating box is too high, the processing will be difficult, the yarn strength will be too low, and too much hair with a length of more than 2 mm will be generated, resulting in a poor anti-pilling effect of the false-twisted yarn. If the temperature of the first heating box is too low, the false twist will be insufficient and it will be difficult to form hair.

[0030] When polyester pre-oriented yarn A and polyester pre-oriented yarn B pass through the first and second rollers, uneven stretching occurs within the constant stress elongation region of the polyester, resulting in stretched and unstretched portions, i.e., fine and coarse sections. The length of the fine and coarse sections is controlled by adjusting the stretch ratio. As long as a natural and diverse patterned color blending effect can be obtained, this invention does not impose particular limitations on the length and diameter of the fine and coarse sections formed during stretching of polyester pre-oriented yarn A and polyester pre-oriented yarn B.

[0031] When the ratio between the first and second rollers is too large, the thicker sections become excessively long, resulting in an increase in fuzz exceeding 2mm, making the fabric prone to pilling and reducing its overall quality. Conversely, when the ratio between the first and second rollers is too small, the polyester pre-oriented yarns A and B are almost entirely extended, eliminating the effect of thicker and thinner sections, failing to create fuzz, and thus failing to achieve the soft hand feel of cotton fabric. In this invention, the ratio between the first and second rollers is preferably 1.050 to 1.250.

[0032] This invention involves using a special false-twist process to cut off some of the coarser sections of polyester filaments with varying thicknesses, resulting in a fuzzy, non-fuzzy yarn with the same density as cotton yarn, while maintaining high strength and a color-blending effect. Fabrics made from this fuzzy, color-blending false-twist yarn possess excellent softness, a fuzzy feel similar to cotton yarn, and a natural patterned texture.

[0033] The testing method involved in this invention is as follows:

[0034] (1) Number of hairs

[0035] The number of feathers obtained using the MODEL MFC-120(F) feather measuring instrument was determined under the following conditions.

[0036] The following parameters were achieved: the detection length of the hair fibers was set to 2 mm and 1 mm, the measurement speed was 200 m / min, the measurement time was 5 min, and the result was the average of 10 tests.

[0037] (2) Pilling

[0038] The test (for fabrics / tube knitted materials) was conducted using JIS L 1076:2012 A method, and the judgment standard was that grades below 2 were unqualified and grades above 3 were qualified.

[0039] (3) The mottled effect after dyeing the fabric

[0040] Fabrics made from false-twisted yarn were dyed with two dyes and their surfaces were observed. Uneven dyeing and obvious mixing of light and dark shades indicated a color-differentiation effect, while uniform dyeing and complete coverage indicated no color-differentiation effect. Ten experienced individuals in the field judged the appearance of the fabric. If all judged the pattern to be rich and natural, it was rated ○; if 6-9 judged the pattern to be rich and natural, it was rated △; and if less than 6 judged the pattern to be very rich and natural, it was rated ×.

[0041] (4) Determination of the cotton-like feel of the fabric

[0042] The wool blended fibers are processed into fabrics, and 10 experienced people in the field judge the feel of the fabric surface. If all 10 people think it has a cotton-like feel, it is judged as excellent; if 6 to 9 people think it has a cotton-like feel, it is judged as good; and if less than 6 people think it has a cotton-like feel, it is judged as insufficient.

[0043] Example 1

[0044] Ordinary polyester PET (SD) filament (POY) with a single filament fineness of 0.89 dtex and cationic dyeable polyester (CD) filament (CD) with a single filament fineness of 1.96 dtex were combined and fed into the first roller, then extended by hot needles with an extension ratio of 1.162, followed by the second roller, and then heated in a hot box (1HT) at 175°C. After cooling with a cooling plate, the filaments were then false-twisted in a false-twisting disc with a detwisting tension to twisting tension ratio of 0.53. Finally, the filaments were wound after being interlaced through a nozzle. The number of fibers with a hair length greater than 1 mm in the resulting blended filaments was 813 / 1000m, and the number of fibers with a hair length greater than 2 mm in the resulting blended filaments was 29 / 1000m. Fabrics made from this blended false-twisted filament exhibited rich and natural patterns, excellent cotton-like effects, and a pilling grade of 3-4 after dyeing.

[0045] Example 2

[0046] Ordinary polyester PET (SD) filament (POY) with a single filament fineness of 1.96 dtex and cationic dyeable polyester (CD) filament (CD) with a single filament fineness of 0.89 dtex are combined and fed into the first roller, then extended by hot needles with an extension ratio of 1.162, then passed through the second roller, and then heated in a hot box (1HT) at 175°C. After cooling by a cooling plate, it is then false-twisted in a false-twisting disc with a detwisting tension to twisting tension ratio of 0.53. Finally, it is wound after being interlaced through a nozzle. The number of fibers with a hair length of 1 mm or more measured in the resulting blended filaments is 900 / 1000m, and the number with a hair length of 2 mm or more measured is 35 / 1000m. Fabrics made from this blended false-twisted filament exhibit rich and natural patterns, excellent cotton-like effects, and a pilling grade of 3-4 after dyeing.

[0047] Example 3

[0048] Ordinary polyester PET (SD) filament (POY) with a single filament fineness of 0.89 dtex and cationic dyeable polyester (CD) filament (CD) with a single filament fineness of 1.96 dtex were combined and fed into the first roller, then extended by hot needles with an extension ratio of 1.162, followed by the second roller, and then heated in a hot box (1HT) at 175°C. After cooling with a cooling plate, the filaments were then false-twisted in a false-twisting disc with a detwisting tension to twisting tension ratio of 0.30. Finally, the filaments were wound after being interlaced through a nozzle. The number of fibers with a hair length greater than 1 mm in the resulting blended filaments was 350 / 1000m, and the number of fibers with a hair length greater than 2 mm in the resulting blended filaments was 15 / 1000m. Fabrics made from this blended false-twisted filament exhibited rich and natural patterns, good cotton-like effects, and a pilling grade of 4 after dyeing.

[0049] Example 4

[0050] Ordinary polyester PET (SD) filament (POY) with a single filament fineness of 0.89 dtex and cationic dyeable polyester (CD) filament (CD) with a single filament fineness of 1.96 dtex were combined and fed into the first roller, then extended by hot needles with an extension ratio of 1.162, followed by the second roller and then heating in a hot box (1HT) at 175°C. After cooling with a cooling plate, the filaments were then false-twisted in a false-twisting disc with a detwisting tension to twisting tension ratio of 1.00. Finally, the filaments were wound after interlacing through a nozzle. The number of fibers with a hair length greater than 1 mm was 1200 / 1000m, and the number of fibers with a hair length greater than 2 mm was 85 / 1000m. Fabrics made from this hairy, false-twisted filament exhibited rich and natural patterns, excellent cotton-like effects, and a pilling grade of 3 after dyeing.

[0051] Example 5

[0052] Ordinary polyester PET (SD) filament (POY) with a single filament fineness of 0.89 dtex and cationic dyeable polyester (CD) filament (CD) with a single filament fineness of 1.96 dtex were combined and fed into the first roller, then extended by hot needles with an extension ratio of 1.162, followed by the second roller, and then heated in a hot box (1HT) at 150°C. After cooling with a cooling plate, the filaments were then false-twisted in a false-twisting disc with a detwisting tension to twisting tension ratio of 0.53. Finally, the filaments were wound after being interlaced through a nozzle. The number of fibers with a hair length of 1 mm or more was 350 / 1000m, and the number of fibers with a hair length of 2 mm or more was 15 / 1000m. Fabrics made from this hairy, false-twisted filament exhibited rich and natural patterns, good cotton-like effects, and a pilling grade of 3-4 after dyeing.

[0053] Example 6

[0054] Ordinary polyester PET (SD) filament (POY) with a single filament fineness of 0.89 dtex and cationic dyeable polyester (CD) filament (CD) with a single filament fineness of 1.96 dtex were combined and fed into the first roller, then extended by hot needles with an extension ratio of 1.162, followed by the second roller, and then heated in a hot box (1HT) at 220°C. After cooling with a cooling plate, the filaments were false-twisted in a false-twisting disc with a detwisting tension to twisting tension ratio of 0.53. Finally, the filaments were wound after being interlaced through a nozzle. The number of fibers with a hair length greater than 1 mm in the resulting blended filaments was 1200 / 1000m, and the number of fibers with a hair length greater than 2 mm in the resulting blended filaments was 85 / 1000m. Fabrics made from this blended false-twisted filament exhibited rich and natural patterns, excellent cotton-like effects, and a pilling grade of 4 after dyeing.

[0055] Example 7

[0056] Ordinary polyester PET (SD) filament (POY) with a single filament fineness of 0.89 dtex and cationic dyeable polyester (CD) filament (CD) with a single filament fineness of 1.96 dtex were combined and fed into the first roller, then extended by a hot needle with an extension ratio of 1.050, followed by a second roller, and then heated in a hot box (1HT) at 175°C. After cooling with a cooling plate, the filaments were then false-twisted in a false-twisting disc with a detwisting tension to twisting tension ratio of 0.53. Finally, the filaments were wound after being interlaced through a nozzle. The number of fibers with a hair length of 1 mm or more was 900 / 1000m, and the number of fibers with a hair length of 2 mm or more was 35 / 1000m. Fabrics made from this hairy, false-twisted filament exhibited a moderate pattern effect, excellent cotton-like appearance, and a pilling grade of 3 after dyeing.

[0057] Example 8

[0058] Ordinary polyester PET (SD) filament (POY) with a single filament fineness of 0.89 dtex and cationic dyeable polyester (CD) filament (CD) with a single filament fineness of 1.96 dtex were combined and fed into the first roller, then extended by a hot needle with an extension ratio of 1.250, followed by a second roller, and then heated in a hot box (1HT) at 175°C. After cooling with a cooling plate, the filaments were then false-twisted in a false-twisting disc with a detwisting tension to twisting tension ratio of 0.53. Finally, the filaments were wound after being interlaced through a nozzle. The number of fibers with a hair length of 1 mm or more was 1350 / 1000m, and the number of fibers with a hair length of 2 mm or more was 55 / 1000m. Fabrics made from this hairy, false-twisted filament exhibited a moderate pattern effect, excellent cotton-like appearance, and a pilling grade of 3-4 after dyeing.

[0059] Example 9

[0060] Ordinary polyester PET (SD) filament (POY) with a single filament fineness of 2.13 dtex and cationic dyeable polyester (CD) filament (CD) with a single filament fineness of 1.96 dtex were combined and fed into the first roller, then extended by hot needles with an extension ratio of 1.162, followed by a second roller, and then heated in a hot box (1HT) at 175°C. After cooling with a cooling plate, the filaments were then false-twisted in a false-twisting disc with a detwisting tension to twisting tension ratio of 0.53. Finally, the filaments were wound after being interlaced through a nozzle. The number of fibers with a hair length of 1 mm or more was 220 / 1000m, and the number of fibers with a hair length of 2 mm or more was 10 / 1000m. Fabrics made from this hairy, false-twisted filament exhibited a moderate pattern effect, good cotton-like appearance, and a pilling grade of 4-5 after dyeing.

[0061] Example 10

[0062] Ordinary polyester PET (SD) filaments with a single filament fineness of 0.89 dtex and POY filaments with a single filament fineness of 1.96 dtex were combined and fed into the first roller, then extended by a hot needle with an extension ratio of 1.162, followed by a second roller, and then heated in a hot box (1HT) at 175°C. After cooling with a cooling plate, the fibers were then false-twisted in a false-twisting disc with a detwisting tension to twisting tension ratio of 0.53. Finally, the fibers were wound after passing through a nozzle for interlacing. The number of fibers with a hair length greater than 1 mm was 300 / 1000m, and the number with a hair length greater than 2 mm was 12 / 1000m. Fabrics made from these false-twisted, hairy blended fibers, after dyeing, exhibited a moderate pattern effect, good cotton-like appearance, and a pilling grade of 3-4.

[0063] Example 11

[0064] Ordinary polyester PET (SD) filament (POY) with a single filament fineness of 0.89 dtex and cationic dyeable polyester (CD) filament (CD) with a single filament fineness of 1.96 dtex were combined and fed into the first roller, then extended by hot needles with an extension ratio of 1.162, followed by the second roller, and then heated in a hot box (1HT) at 140°C. After cooling with a cooling plate, the filaments were then false-twisted in a false-twisting disc with a detwisting tension to twisting tension ratio of 0.53. Finally, the filaments were wound after being interlaced through a nozzle. The number of fibers with a hair length greater than 1 mm in the resulting blended filaments was 260 / 1000m, and the number of fibers with a hair length greater than 2 mm in the resulting blended filaments was 8 / 1000m. Fabrics made from this blended false-twisted filament exhibited rich and natural patterns after dyeing, with good cotton-like effects and a pilling grade of 3-4.

[0065] Example 12

[0066] Ordinary polyester PET (SD) filament (POY) with a single filament fineness of 0.89 dtex and cationic dyeable polyester (CD) filament (CD) with a single filament fineness of 1.96 dtex were combined and fed into the first roller, then extended by hot needles with an extension ratio of 1.162, followed by the second roller, and then heated in a hot box (1HT) at 230°C. After cooling with a cooling plate, the filaments were then false-twisted in a false-twisting disc with a detwisting tension to twisting tension ratio of 0.53. Finally, the filaments were wound after being interlaced through a nozzle. The number of fibers with a hair length greater than 1 mm was 1600 / 1000m, and the number of fibers with a hair length greater than 2 mm was 100 / 1000m. Fabrics made from this hairy, false-twisted filament exhibited rich and natural patterns and excellent cotton-like effects after dyeing, but the pilling grade was 3.

[0067] Example 13

[0068] Ordinary polyester PET (SD) filament (POY) with a single filament fineness of 0.89 dtex and cationic dyeable polyester (CD) filament (CD) with a single filament fineness of 1.96 dtex were combined and fed into the first roller, then extended by a hot needle with an extension ratio of 1.010, followed by a second roller, and then heated in a hot box (1HT) at 175°C. After cooling with a cooling plate, the filaments were then false-twisted in a false-twisting disc with a detwisting tension to twisting tension ratio of 0.53. Finally, the filaments were wound after being interlaced through a nozzle. The number of fibers with a hair length of 1 mm or more was 350 / 1000m, and the number of fibers with a hair length of 2 mm or more was 25 / 1000m. Fabrics made from this hairy, false-twisted filament exhibited a moderate pattern effect, good cotton-like appearance, and a pilling grade of 4 after dyeing.

[0069] Example 14

[0070] Ordinary polyester PET (SD) filament (POY) with a single filament fineness of 0.89 dtex and cationic dyeable polyester (CD) filament (CD) with a single filament fineness of 1.96 dtex were combined and fed into the first roller, then extended by hot needles with an extension ratio of 1.260, followed by the second roller, and then heated in a hot box (1HT) at 175°C. After cooling by a cooling plate, the filaments were then false-twisted in a false-twisting disc with a detwisting tension to twisting tension ratio of 0.53. Finally, the filaments were wound after being interlaced through a nozzle. The number of fibers with a hair length of 1 mm or more was 1400 / 1000m, and the number of fibers with a hair length of 2 mm or more was 75 / 1000m. Fabrics made from this hairy, false-twisted filament exhibited a moderate pattern effect, good cotton-like appearance, and a pilling grade of 3 after dyeing.

[0071] Example 15

[0072] Ordinary polyester PET (SD) filaments with a single filament fineness of 0.89 dtex were fed into the first roller and extended by hot needles with an extension ratio of 1.162. They then entered the second roller, where another cationic dyeable polyester (CD) filament with a single filament fineness of 1.96 dtex was directly fed. Both were then simultaneously heated in a heating chamber (1HT) at 175°C, cooled by a cooling plate, and then false-twisted in a false-twisting disc with a detwisting tension to twisting tension ratio of 0.53. After passing through a nozzle, they were wound into shape. The number of fibers with a hair length greater than 1 mm in the resulting blended filaments was 700 / 1000m, and the number with a hair length greater than 2 mm was 10 / 1000m. Fabrics made from these hairy, false-twisted blended filaments, after dyeing, exhibited a moderate pattern effect, good cotton-like appearance, and a pilling grade of 3.

[0073] Comparative Example 1

[0074] Ordinary polyester PET (SD) filament (POY) with a single filament fineness of 0.89 dtex and cationic dyeable polyester (CD) filament (CD) with a single filament fineness of 1.96 dtex were combined and fed into the first roller, then extended by hot needles with an extension ratio of 1.162, followed by a second roller, and then heated in a hot box (1HT) at 175°C. After cooling with a cooling plate, the filaments were then false-twisted in a false-twisting disc with a detwisting tension to twisting tension ratio of 0.20. Finally, the filaments were wound after interlacing through a nozzle. The number of fibers with a hair length greater than 1 mm was 150 / 1000m, and the number of fibers with a hair length greater than 2 mm was 15 / 1000m. Fabrics made from this hairy, false-twisted filament exhibited rich and natural patterns after dyeing, with a pilling grade of 3. However, because the ratio of untwisting tension to twisting tension is less than 0.3, the number of hairs on the processed yarn is small, resulting in insufficient cotton-like effect.

[0075] Comparative Example 2

[0076] Ordinary polyester PET (SD) filament (POY) with a single filament fineness of 0.89 dtex and cationic dyeable polyester (CD) filament (CD) with a single filament fineness of 1.96 dtex were combined and fed into the first roller, then extended by hot needles with an extension ratio of 1.162, followed by the second roller, and then heated in a hot box (1HT) at 175°C. After cooling with a cooling plate, the filaments were then false-twisted in a false-twisting disc with a detwisting tension to twisting tension ratio of 1.50. Finally, the filaments were wound after being interlaced through a nozzle. The number of fibers with a hair length greater than 1 mm was 1600 / 1000m, and the number of fibers with a hair length greater than 2 mm was 130 / 1000m. Fabrics made from this hairy, false-twisted filament exhibited rich and natural patterns and excellent cotton-like effects after dyeing. However, because the ratio of untwisting tension to twisting tension is greater than 1.0, the number of feathers with a length of 2mm or more exceeds 100 per 1000m, resulting in a pilling grade of 2.

[0077] Comparative Example 3

[0078] Ordinary polyester PET (SD) filament (POY) with a single filament fineness of 0.89 dtex and cationic dyeable polyester (CD) filament (CD) with a single filament fineness of 1.96 dtex were combined and fed into the first roller, then heated in a heating box (1HT) at 230°C. After cooling with a cooling plate, the filaments were then false-twisted in a false-twisting disc with a twisting tension ratio of 0.70. After passing through a nozzle, the filaments were wound into shape. The number of fibers with a hair length greater than 1 mm and the number of fibers with a hair length greater than 2 mm in the resulting blended filaments were 0 / 1000m. Fabrics made from this hairy, false-twisted blended filament, after dyeing, exhibited only a moderate pattern effect and a pilling grade of 3. However, due to the lack of stretching processing, polyester filaments A and B lacked fine and coarse detail, failing to produce hairiness during false-twisting and resulting in insufficient cotton-like texture.

[0079]

[0080]

[0081]

Claims

1. Blended, false-twisted yarn, characterized by: The hairy, mixed-color false-twisted processed yarn comprises polyester filament A and polyester filament B, wherein polyester filament A and / or polyester filament B have a coarse-fine detail structure, and some of the coarse details in the coarse-fine detail structure are cut off to form hairs; the number of hairs larger than 2mm is less than 100 per 1000m; the number of hairs larger than 1mm is 300 to 1500 per 1000m; the preparation method of the hairy, mixed-color false-twisted processed yarn involves feeding polyester pre-oriented yarn A and polyester pre-oriented yarn B into the first roller through the same spindle position, extending them by a hot roller and then entering the second roller, then heating them in the first hot box and introducing them into a false twister for twisting, and finally passing them through the third roller, a winding device, and the fourth roller to obtain the hairy, mixed-color false-twisted processed yarn; wherein the ratio of untwisting tension to twisting tension is 0.30 to 1.00; the temperature of the first hot box is 150 to 220℃, and the ratio between the first roller and the second roller is 1.050 to 1.

250.

2. The blended color false twist processed yarn according to claim 1, characterized in that: The number of hairs larger than 2mm is less than 50 per 1000m.

3. The blended color false twist processed yarn according to claim 1, characterized in that: The number of hairs larger than 1 mm is 500 to 1000 per 1000 m.

4. The blended-color false-twisted yarn according to claim 1 or 2, characterized in that: The polyester filament A and polyester filament B have different dyeing mechanisms.

5. The blended-color false-twisted yarn according to claim 1 or 2, characterized in that: The single filament fineness of both polyester filament A and polyester filament B is below 2.00 dtex.

6. The application of the wool-blend false-twist processed yarn of claim 1 in fabrics.

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