Temperature-regulating fiber blended knitting yarn as well as production method and application thereof

Abstract

The invention discloses a temperature-adjusting fiber blended knitting yarn and a production method and application thereof, and belongs to the technical field of textiles. The thermoregulation fiber blended knitting yarn is obtained by blending fine staple cotton and thermoregulation fibers, the mass ratio of the fine staple cotton is 70-80%, and the mass ratio of the thermoregulation fibers is 20-30%. In addition, the invention further provides a production method of the temperature-adjusting fiber blended knitting yarn, and the temperature-adjusting fiber blended knitting yarn is obtained through a pretreatment process, a blowing process, a cotton carding process, a drawing process, a roving process, a spinning process and a spooling process in sequence. The pretreatment process comprises the steps that temperature adjusting fibers are put into a circular truncated cone, an antistatic agent solution is sprayed on the temperature adjusting fibers, and the temperature adjusting fibers are grabbed by a bale plucker and repackaged. In addition, the invention further provides application of the temperature-adjusting fiber blended knitting yarn in manufacturing infant knitted clothes. The temperature-adjusting fiber blended knitting yarn provided by the invention is a fine high count yarn with excellent quality.

Description

Technical Field

[0001] The invention relates to the technical field of textiles, and in particular to a temperature regulating fiber blended knitting yarn and a production method and application thereof. Background Art

[0002] With the improvement of living standards, functional textiles are becoming more and more popular. Thermoregulating fiber is one of the new "intelligent" functional products. Thermoregulating fiber (also known as heat storage thermoregulating fiber) is a bidirectional temperature regulating and thermal insulation material that has the function of absorbing, storing and releasing heat in the form of latent heat. It can transform into solid and liquid states during temperature changes, thereby achieving the effect of absorbing and releasing heat. When the external environment temperature changes, it reacts accordingly on the skin, which has a buffering effect on temperature changes.

[0003] Although thermoregulating fibers have the above-mentioned bidirectional temperature regulation characteristics, they also have their own inherent shortcomings: poor spinnability, serious flower sticking and returning during the production process, large specific resistance, and easy to generate static electricity. At the same time, it is difficult to fully mix with other fibers when used as blended yarns, and the quality of the obtained blended yarns is not high, which affects its wide application. It is also because of the above-mentioned shortcomings that the existing technology usually blends with long-staple cotton to obtain fine and high-quality medium-high count yarns. How to obtain high-quality knitting yarns through thermoregulating fibers and fine-staple cotton is a technical problem that needs to be solved in the existing technology. Summary of the invention

[0004] The purpose of the present invention is to overcome the above technical deficiencies, provide a thermoregulating fiber blended knitting yarn and a production method and application thereof, and solve the technical problem of how to obtain high-quality knitting yarn through thermoregulating fibers and fine-staple cotton in the prior art.

[0005] To achieve the above technical purpose, the technical solution of the present invention provides a temperature regulating fiber blended knitting yarn, which is obtained by blending fine cotton and temperature regulating fiber, wherein the mass proportion of the fine cotton is 70-80%, and the mass proportion of the temperature regulating fiber is 20-30%.

[0006] In any embodiment, the performance standards of the temperature-regulating fiber include: specific strength 2.2-2.33CN / dtex, elongation at break 16-16.6%, linear density 2.2-2.3dtex, length 37-38mm; and / or, the performance standards of the fine-staple cotton include: specific strength 28-29.2CN / dtex, length 28-29.5mm, impurities 2.1-2.2%, 20mm short fiber rate (weight) within 29%, and foreign fibers ≤1g / ton.

[0007] In addition, the present invention also proposes a method for producing the above-mentioned temperature-regulating fiber blended knitting yarn, which is produced through a pretreatment process, a cotton cleaning process, a cotton carding process, a drawing process, a coarse yarn process, a fine yarn process and a winding process in sequence; the pretreatment process includes: putting the temperature-regulating fiber into a round table, spraying an antistatic agent solution on the temperature-regulating fiber, a cotton grabbing machine grabbing the temperature-regulating fiber, repacking it, and sealing the temperature-regulating fiber with a cover cloth.

[0008] In any embodiment, the antistatic agent solution is obtained by mixing the antistatic agent and water in a volume ratio of 1:(1-1.2).

[0009] In any embodiment, the cotton cleaning process includes: the temperature-regulated fibers are rolled separately, the beater speed of the cotton plucker is 926-936 r / min, the beater blade height is 1-1.2 mm, the beater speed of the cotton blender is 485-490 r / min, and the cotton roll weight is 11.5-12 kg.

[0010] In any embodiment, the carding process includes: a cylinder speed of 250-260r / min, a licker-in speed of 450-460r / min, a doffer speed of 15-16r / min, a cover speed of 120-125mm / min, a cylinder and licker-in gauge of 6-7 inches, a feed plate and licker-in gauge of 17-18 inches, a cylinder and doffer gauge of 3-4 inches, and a carded cotton dry weight of 22-22.5g / 5m.

[0011] In any embodiment, the humidity in the drawing process is controlled at above 66%.

[0012] In any embodiment, the drawing process includes: one pre-drawing and three drawing steps, the pre-drawing is 8 temperature-adjusting fibers, the dry weight is 18.6-19g / 5 meters, and the roller spacing is 12mm×20mm; one drawing is 5 fibers, and the drawing is distributed into 4 combed fine cotton strips and 1 temperature-adjusting pre-drawing, with a dry weight of 17.5-18g / 5 meters; two drawings are 8 fibers, the dry weight is 17.1-17.5g / 5 meters, and the mechanical draft is 8.02-8.05 times; three drawings are 8 fibers, and the dry weight is 17-17.5g / 5 meters.

[0013] In any embodiment, the coarse yarn process includes: the coarse yarn twist is 4.8-5 twists / 10cm, the roller gauge is 10mm×23mm×35mm, and the coarse yarn dry weight is 4.37-4.4g / 10 meters; and / or, the fine yarn process includes: the roller gauge is 17.5mm×37.5mm, the rear zone drafting multiple is 1.18-1.2 times, the jaw gauge is 4-4.5mm, the front roller diameter is 27-27.5mm, the front roller speed is 73-75r / min, and the twist is 113-115 twists / 10cm.

[0014] In addition, the present invention also proposes an application of the above-mentioned temperature-regulating fiber blended knitting yarn or the temperature-regulating fiber blended knitting yarn produced by the above-mentioned production method in the production of knitted clothing for infants and young children.

[0015] Compared with the prior art, the beneficial effects of the present invention include: the temperature regulating fiber blended knitting yarn proposed in the present invention is obtained by blending fine cotton and temperature regulating fiber, the mass proportion of the fine cotton is 70-80%, and the mass proportion of the temperature regulating fiber is 20-30%. According to this ratio, the temperature regulating fiber and the fine cotton are blended to obtain a finer and high-quality high-count yarn, which has the advantages of two-way temperature regulation, comfort, air permeability and moisture permeability. DETAILED DESCRIPTION

[0016] The "range" disclosed in the present application is defined in the form of a lower limit and an upper limit, and a given range is defined by selecting a lower limit and an upper limit, and the selected lower limit and upper limit define the boundaries of the particular range. The range defined in this way can be inclusive or exclusive of the end values, and can be arbitrarily combined, that is, any lower limit can be combined with any upper limit to form a range. For example, if a range of 60 to 120 and 80 to 110 is listed for a particular parameter, it is understood that a range of 60 to 110 and 80 to 120 is also expected. In addition, if the minimum range values ​​1 and 2 are listed, and if the maximum range values ​​3, 4 and 5 are listed, the following ranges can all be expected: 1 to 3, 1 to 4, 1 to 5, 2 to 3, 2 to 4 and 2 to 5. In the present application, unless otherwise specified, the numerical range "a to b" represents an abbreviation of any real number combination between a and b, where a and b are both real numbers. For example, the numerical range "0-5" means that all real numbers between "0-5" are listed in this document, and "0-5" is just an abbreviation of these numerical combinations. In addition, when a parameter is expressed as an integer ≥ 2, it is equivalent to disclosing that the parameter is, for example, an integer of 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, etc.

[0017] If there is no special explanation, the "include" and "comprising" mentioned in this application are open-ended or closed-ended. For example, the "include" and "comprising" may mean that other components not listed may also be included or only the listed components may be included or only the listed components may be included.

[0018] If not specifically stated, in this application, the term "or" is inclusive. For example, the phrase "A or B" means "A, B, or both A and B". More specifically, any of the following conditions satisfies the condition "A or B": A is true (or exists) and B is false (or does not exist); A is false (or does not exist) and B is true (or exists); or both A and B are true (or exist).

[0019] The present specific embodiment proposes a thermoregulating fiber blended knitting yarn, which is obtained by blending fine-staple cotton with thermoregulating fiber, wherein the mass proportion of the fine-staple cotton is 70-80%, and the mass proportion of the thermoregulating fiber is 20-30%; the performance standards of the thermoregulating fiber include: specific strength 2.2-2.33CN / dtex, elongation at break 16-16.6%, linear density 2.2-2.3dtex, length 37-38mm; and / or, the performance standards of the fine-staple cotton include: specific strength 28-29.2CN / dtex, length 28-29.5mm, impurities 2.1-2.2%, 20mm short fiber rate (weight) within 29%, and foreign fibers ≤1g / ton.

[0020] This specific embodiment also provides a method for producing the above-mentioned temperature-regulating fiber blended knitting yarn, which is produced through a pretreatment process, a cleaning process, a carding process, a drawing process, a roving process, a spun spinning process and a winding process in sequence;

[0021] The pretreatment process includes: putting the temperature-adjusting fiber into a round table, spraying an antistatic agent solution on the temperature-adjusting fiber, grabbing the temperature-adjusting fiber with a plucking machine, repacking, and sealing the temperature-adjusting fiber with a cover cloth; the antistatic agent solution is obtained by mixing the antistatic agent and water in a volume ratio of 1: (1-1.2), and in some embodiments, the model of the antistatic agent solution is Naturo model;

[0022] The cotton cleaning process includes: the temperature-controlled fibers are rolled separately, the beater speed of the plucker is 926-936 r / min, the beater blade height is 1-1.2 mm, the beater speed of the blender is 485-490 r / min, and the cotton roll weight is 11.5-12 kg;

[0023] The carding process includes: cylinder speed 250-260r / min, licker-in speed 450-460r / min, doffer speed 15-16r / min, cover speed 120-125mm / min, cylinder and licker-in gauge 6-7 inches, feed plate and licker-in gauge 17-18 inches, cylinder and doffer gauge 3-4 inches, carded cotton dry weight 22-22.5g / 5m;

[0024] The humidity of the drawing process is controlled at more than 66%, and the drawing process includes: after one pre-drawing and three drawing, the pre-drawing is 8 thermostatic fibers, the dry weight is 18.6-19g / 5 meters, and the roller spacing is 12mm×20mm; one drawing is 5, and the drawing is divided into 4 combed fine cotton strips and 1 thermostatic pre-drawing, the dry weight is 17.5-18g / 5 meters; two drawing is 8, the dry weight is 17.1-17.5g / 5 meters, and the mechanical draft is 8.02-8.05 times; three drawing is 8, and the dry weight is 17-17.5g / 5 meters;

[0025] The roving process includes: the roving twist is 4.8-5 twists / 10cm, the roller gauge is 10mm×23mm×35mm, and the roving dry weight is 4.37-4.4g / 10m;

[0026] The spinning process includes: roller gauge of 17.5mm×37.5mm, rear zone drafting multiple of 1.18-1.2 times, jaw gauge of 4-4.5mm, front roller diameter of 27-27.5mm, front roller speed of 73-75r / min, twist of 113-115 twists / 10cm; in some embodiments, the spinning process special parts model is: leather roller model J65, jaw 3.0mm, self-pressure rod upper pin; use bearing steel collar;

[0027] The winding process includes: electro-clearing parameters: cotton neps N: 450%, short thick S: 150%×1.5cm, long thick L: 35%×30cm, thin thin T: -35%×30cm; foreign fiber parameters FD1: 13%×0.5cm, FD2: 9%×1cm, FD3: 5%×2.5cm.

[0028] The production method provided by the present invention produces single yarn through the steps of pretreatment, cleaning, carding, drawing, roving, spinning and winding in sequence. Compared with the prior art, the steps in the production method have the following characteristics: the temperature-regulating fiber is rolled separately in the cleaning step, and is combined with the fine-staple cotton strips in the drawing step. According to the steps and specific process parameters provided by the present invention, the temperature-regulating fiber can be blended to obtain a compact yarn with a count of 60, and a blended yarn with the advantages of uniform yarn, high strength, bidirectional temperature regulation, etc. can be obtained. The yarn strength and yarn evenness indicators reach the effect of using a compact siro blended yarn of long-staple cotton and temperature-regulating fiber.

[0029] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0030] In the present invention, reference is made to “some embodiments”, “this embodiment”, examples, etc., which describe a subset of all possible embodiments, but it can be understood that “some embodiments” may be the same subset or different subsets of all possible embodiments and may be combined with each other without conflict.

[0031] If similar descriptions of "first / second" appear in the application documents, the following instructions are added. In the following description, the terms "first\second\third" are merely used to distinguish similar objects and do not represent a specific ordering of the objects. It can be understood that "first\second\third" can be interchanged in a specific order or sequence where permitted, so that the embodiments described herein can be implemented in an order other than that described herein.

[0032] In this embodiment, the term "and / or" is merely a description of the association relationship between associated objects, indicating that three relationships may exist. For example, object A and / or object B may represent three situations: object A exists alone, object A and object B exist at the same time, and object B exists alone.

[0033] Hereinafter, the embodiments of the present application will be described. The embodiments described below are exemplary and are only used to explain the present application, and should not be construed as limiting the present application. If no specific techniques or conditions are indicated in the embodiments, the techniques or conditions described in the literature in this area or the product specifications are used. If the manufacturer is not indicated in the reagents or instruments used, they are all conventional products that can be obtained commercially.

[0034] In the following examples or comparative examples, the temperature-regulating fiber is a PCM phase-change temperature-regulating fiber provided by Hangzhou Weimei Home Textile Co., Ltd.: specific strength 2.33CN / dtex, elongation at break 16.6%, linear density 2.3dtex, length 38mm;

[0035] Fine-staple cotton: specific strength 29.2CN / dtex, length 29.5mm, impurities 2.2%, 20mm short lint rate (weight) within 29%, foreign fiber ≤ 1g / ton;

[0036] Antistatic agent: Naturo type antistatic agent;

[0037] The equipment used in the production line includes: A002C automatic cotton plucking machine, A036B porcupine cotton opener, A092A double cotton box cotton feeder, A076C lap forming machine, A186 carding machine, TM13 drawing frame, FA411 roving frame, DTM129 spinning frame, 21C~S winding machine.

[0038] Example 1

[0039] This embodiment provides a thermoregulating fiber blended knitting yarn, wherein the mass proportion of the fine cotton is 75%, and the mass proportion of the thermoregulating fiber is 25%. The yarn is produced by the following process steps:

[0040] (1) Pretreatment process

[0041] Because the thermostatic fiber has a large specific resistance and is prone to static electricity, it cannot be rolled up alone. Therefore, the thermostatic fiber is pre-treated before formal production. The antistatic agent used accounts for 1.6% of the fiber content and is diluted with water. The ratio of water to antistatic agent is 1:1. The thermostatic fiber is placed on the round table. The cotton plucker grabs the thermostatic fiber and sprays the antistatic agent evenly on the thermostatic fiber. The grabbed thermostatic fiber is repacked and sealed with a cover cloth for 24 hours.

[0042] (2) Cleaning process

[0043] In order to protect the thermostatic fiber from damage as little as possible, the process should be shortened as much as possible, and the striking method should be used to reduce the striking force. The thermostatic fiber is rolled separately, the beater speed of the cotton plucker is 936r / min, the beater blade height is 1mm, the beater speed of the blender is 485r / min, the distance between the beater and the dust bar is 10mm, the cotton roll roller speed is 12r / min, and the cotton roll weight is 11.5kg;

[0044] (3) Carding process

[0045] The cylinder speed is 250r / min, the licker-in speed is 450r / min, the doffer speed is 16r / min, the flat board speed is 125mm / min, the cylinder and licker-in gauge is 7 inches, the feed board and licker-in gauge is 18 inches, the cylinder and doffer gauge is 4 inches, the cylinder and flat board 5-point gauge is 12 inches × 11 inches × 11 inches × 11 inches × 12 inches, and the carded cotton dry weight is 22g / 5m;

[0046] (5) Drawing process

[0047] After one pre-bend and three combine-bends, the pre-bend is composed of 8 temperature-adjusting fibers, with a dry weight of 18.6g / 5m and a roller spacing of 12mm×20mm; the first combine is composed of 5 fibers, which are distributed as 4 combed fine cotton strips and 1 temperature-adjusting pre-bend, with a dry weight of 17.5g / 5m, a mechanical draft of 5.21 times, and a rear-zone draft of 1.6 times; the second combine is composed of 8 fibers, with a dry weight of 17.1g / 5m, a mechanical draft of 8.02 times, and a rear-zone draft of 1.4 times; the third combine is composed of 8 fibers, with a dry weight of 17g / 5m, a mechanical draft of 7.89 times, and a rear-zone draft of 1.3 times; the drawing speed is 300m / min, and the drawing humidity is controlled at more than 66% to reduce the blockage of the bell mouth and the return of leather rollers.

[0048] (6) Roving process

[0049] The roving is produced on a FA411 roving frame, with a twist of 4.8 twists / 10cm, a twist coefficient of 103, a roller gauge of 10mm×23mm×35mm, a rear draft of 1.18 times, a jaw gauge of 6.5mm, a dry weight of 4.37g / 10m, a mechanical draft of 7.38 times, and a spindle speed of 600r / min;

[0050] (7) Spinning process

[0051] The spun yarn is produced on a DTM129 spinning frame, with a mechanical drafting multiple of 52 times, a roller gauge of 17.5mm×37.5mm, a rear drafting multiple of 1.18 times, a jaw gauge of 4mm, a front roller diameter of 27mm, a front roller speed of 73r / min, a twist of 113 twists / 10cm, and a twist coefficient of 353. The leather roller model is J65, the jaw is 3.0mm, the self-pressure rod has an upper pin, and a bearing steel collar is used;

[0052] (8) Winding process

[0053] The single yarn winding is produced on Murata's automatic winding machine in Japan, using the Uster electronic yarn clearer and empty twist knot-free technology to ensure effective removal of yarn defects. The electric clearing parameters are: cotton neps N: 450%, short thick S: 150% × 1.5cm, long thick L: 35% × 30cm, thin thin T: -35% × 30cm; foreign fiber parameters FD1: 13% × 0.5cm, FD2: 9% × 1cm, FD3: 5% × 2.5cm, and JC / temperature-adjusting 75 / 25 9.8tex tight single yarn is produced, which is the temperature-adjusting fiber blended knitting yarn.

[0054] Example 2

[0055] This embodiment provides a thermoregulating fiber blended knitting yarn, wherein the mass proportion of the fine cotton is 70%, and the mass proportion of the thermoregulating fiber is 30%. The yarn is produced by the following process steps:

[0056] (1) Pretreatment process

[0057] Because the thermostatic fiber has a large specific resistance and is prone to static electricity, it cannot be rolled up alone. Therefore, the thermostatic fiber is pre-treated before formal production. The antistatic agent used accounts for 1.6% of the fiber content. The ratio of water to antistatic agent is 1:1.1. The thermostatic fiber is placed on the round table. The cotton plucker grabs the thermostatic fiber and sprays the antistatic agent evenly on the thermostatic fiber. The grabbed thermostatic fiber is repacked and sealed with a cover cloth for 24 hours.

[0058] (2) Cleaning process

[0059] In order to protect the thermostatic fiber from damage as little as possible, the process should be shortened as much as possible, and the striking method should be used to reduce the striking force. The thermostatic fiber is rolled separately, the beater speed of the cotton plucker is 926r / min, the beater blade height is 1.2mm, the beater speed of the blender is 488r / min, the distance between the beater and the dust bar is 10mm, the cotton roll roller speed is 12r / min, and the cotton roll weight is 12kg;

[0060] (3) Carding process

[0061] The cylinder speed is 255r / min, the licker-in speed is 455r / min, the doffer speed is 15r / min, the flat board speed is 120mm / min, the cylinder and licker-in gauge is 7 inches, the feed board and licker-in gauge is 18 inches, the cylinder and doffer gauge is 4 inches, the cylinder and flat board 5-point gauge is 12 inches × 11 inches × 11 inches × 11 inches × 12 inches, and the carded cotton dry weight is 22.5g / 5m;

[0062] (5) Drawing process

[0063] After one pre-bend and three combine-bends, the pre-bend is composed of 8 temperature-adjusting fibers, with a dry weight of 18.8g / 5m and a roller spacing of 12mm×20mm; the first combine is composed of 5 fibers, which are distributed as 4 combed fine cotton strips and 1 temperature-adjusting pre-bend, with a dry weight of 17.8g / 5m, a mechanical draft of 5.21 times, and a rear-zone draft of 1.6 times; the second combine is composed of 8 fibers, with a dry weight of 17.5g / 5m, a mechanical draft of 8.05 times, and a rear-zone draft of 1.4 times; the third combine is composed of 8 fibers, with a dry weight of 17.5g / 5m, a mechanical draft of 7.89 times, and a rear-zone draft of 1.3 times; the drawing speed is 300m / min, and the drawing humidity is controlled above 66% to reduce the phenomenon of clogging the bell mouth and roller return.

[0064] (6) Roving process

[0065] The roving is produced on a FA411 roving frame, with a twist of 4.9 twists / 10cm, a twist coefficient of 103, a roller gauge of 10mm×23mm×35mm, a rear draft of 1.18 times, a jaw gauge of 6.5mm, a dry weight of 4.4g / 10m, a mechanical draft of 7.38 times, and a spindle speed of 600r / min;

[0066] (7) Spinning process

[0067] The spinning yarn is produced on a DTM129 spinning frame, with a mechanical drafting multiple of 52 times, a roller gauge of 17.5mm×37.5mm, a rear drafting multiple of 1.2 times, a jaw gauge of 4mm, a front roller diameter of 27.5mm, a front roller speed of 74r / min, a twist of 115 twists / 10cm, and a twist coefficient of 353. The top roller model is J65, the jaw is 3.0mm, the self-pressure rod has an upper pin, and a bearing steel collar is used;

[0068] (8) Winding process

[0069] The single yarn winding is produced on Murata's automatic winding machine in Japan, using the Uster electronic yarn clearer and the empty twist knot-free technology to ensure the effective removal of yarn defects. The electric clearing parameters are: cotton neps N: 450%, short thick S: 150% × 1.5cm, long thick L: 35% × 30cm, thin thin T: -35% × 30cm; foreign fiber parameters FD1: 13% × 0.5cm, FD2: 9% × 1cm, FD3: 5% × 2.5cm, and the JC / temperature-adjusted 70 / 30 9.8tex tight single yarn is produced, which is the temperature-adjusted fiber blended knitting yarn.

[0070] Example 3

[0071] This embodiment provides a thermoregulating fiber blended knitting yarn, wherein the mass proportion of the fine cotton is 80%, and the mass proportion of the thermoregulating fiber is 20%. The yarn is produced by the following process steps:

[0072] (1) Pretreatment process

[0073] Because the thermostatic fiber has a large specific resistance and is prone to static electricity, it cannot be rolled up alone. Therefore, the thermostatic fiber is pre-treated before formal production. The antistatic agent used accounts for 1.6% of the fiber content. The ratio of water to antistatic agent is 1:1.2. The thermostatic fiber is placed on the round table. The cotton plucker grabs the thermostatic fiber and sprays the antistatic agent evenly on the thermostatic fiber. The grabbed thermostatic fiber is repacked and sealed with a cover cloth for 24 hours.

[0074] (2) Cleaning process

[0075] In order to protect the thermostatic fiber from damage as little as possible, the process should be shortened as much as possible, and the striking method should be used to reduce the striking force. The thermostatic fiber is rolled separately, the beater speed of the cotton plucker is 930r / min, the beater blade height is 1.1mm, the beater speed of the blender is 486r / min, the distance between the beater and the dust bar is 10mm, the cotton roll roller speed is 12r / min, and the cotton roll weight is 11.5kg;

[0076] (3) Carding process

[0077] The cylinder speed is 260r / min, the licker-in speed is 460r / min, the doffer speed is 16r / min, the flat board speed is 122mm / min, the cylinder and licker-in gauge is 7 inches, the feed board and licker-in gauge is 18 inches, the cylinder and doffer gauge is 4 inches, the cylinder and flat board 5-point gauge is 12 inches × 11 inches × 11 inches × 11 inches × 12 inches, and the carded cotton dry weight is 22g / 5m;

[0078] (5) Drawing process

[0079] After one pre-bend and three combine-bends, the pre-bend is composed of 8 temperature-adjusting fibers, with a dry weight of 19g / 5m and a roller spacing of 12mm×20mm; the first combine is composed of 5 fibers, which are distributed as 4 combed fine cotton strips and 1 temperature-adjusting pre-bend, with a dry weight of 18g / 5m, a mechanical draft of 5.21 times, and a rear-zone draft of 1.6 times; the second combine is composed of 8 fibers, with a dry weight of 17.3g / 5m, a mechanical draft of 8.02 times, and a rear-zone draft of 1.4 times; the third combine is composed of 8 fibers, with a dry weight of 17.2g / 5m, a mechanical draft of 7.89 times, and a rear-zone draft of 1.3 times; the drawing speed is 300m / min, and the drawing humidity is controlled above 66% to reduce the blockage of the bell mouth and the return of leather rollers.

[0080] (6) Roving process

[0081] The roving is produced on a FA411 roving frame, with a twist of 5 twists / 10cm, a twist coefficient of 103, a roller gauge of 10mm×23mm×35mm, a rear draft of 1.18 times, a jaw gauge of 6.5mm, a dry weight of 4.39g / 10m, a mechanical draft of 7.38 times, and a spindle speed of 600r / min;

[0082] (7) Spinning process

[0083] The spinning yarn is produced on a DTM129 spinning frame, with a mechanical drafting multiple of 52 times, a roller gauge of 17.5mm×37.5mm, a rear zone drafting multiple of 1.19 times, a jaw gauge of 4mm, a front roller diameter of 27mm, a front roller speed of 75r / min, a twist of 114 twists / 10cm, and a twist coefficient of 353. The leather roller model is J65, the jaw is 3.0mm, the self-pressure rod has an upper pin, and a bearing steel collar is used;

[0084] (8) Winding process

[0085] The single yarn winding is produced on Murata's automatic winding machine in Japan, using the Uster electronic yarn clearer and empty twist knot-free technology to ensure effective removal of yarn defects. The electric clearing parameters are: cotton neps N: 450%, short thick S: 150% × 1.5cm, long thick L: 35% × 30cm, thin thin T: -35% × 30cm; foreign fiber parameters FD1: 13% × 0.5cm, FD2: 9% × 1cm, FD3: 5% × 2.5cm, and JC / temperature-adjusted 80 / 20 9.8tex tight single yarn is produced, which is the temperature-adjusted fiber blended knitting yarn.

[0086] Comparative Example 1

[0087] The production method of the temperature-regulating fiber blended knitting yarn proposed in this comparative example is the same as the various processes and corresponding parameters in the production method of Example 1. The difference is that the antistatic agent used is a GR-KP type antistatic agent, and the temperature-regulating fiber blended knitting yarn is obtained in the final meridian winding process.

[0088] Comparative Example 2

[0089] The production method of the temperature-regulating fiber blended knitting yarn proposed in this comparative example is the same as the production method in Example 1 in each process, except that the humidity in the drawing process is about 52%, the drawing speed is 100m / min, and the temperature-regulating fiber blended knitting yarn is obtained in the final warp winding process.

[0090] Comparative Example 3

[0091] The production method of the temperature-regulating fiber blended knitting yarn proposed in this comparative example is the same as the various processes in the production method of Example 1, except that the leather roller model 966, the jaw opening 3.0 mm, and the lengthened upper pin are used in the spinning process.

[0092] Comparative Example 4

[0093] This comparative example proposes a method for producing a thermoregulating fiber blended knitting yarn, which uses long-staple cotton and thermoregulating fiber for blending, wherein the mass proportion of the long-staple cotton is 70% and the mass proportion of the thermoregulating fiber is 30%. The specific steps are as follows:

[0094] (1) Pretreatment process

[0095] The ratio of water to antistatic agent is 2:1. Spray the antistatic agent evenly on the temperature-regulating fiber and cover the temperature-regulating fiber with a cover cloth for 24 hours.

[0096] (2) Blending process

[0097] The combed long-staple cotton and the pre-treated temperature-adjusting fiber are mechanically and evenly mixed in a weight ratio of 70:30 (or manually mixed), and then put into the cotton plucking machine for the next cleaning process;

[0098] (3) Cleaning process

[0099] The beater of the plucker descends 3mm each time, the speed is 960r / min, the speed of the rotary trolley is 2.8r / min, the blade extends 3mm from the rib, the beater speed is 800r / min, the fan speed is 950r / min, the distance between the beater and the balance roller is 12mm, the speed of the lap roller is 10.3r / min, the dry weight of the lap is 357g / m, and the length of the lap is 30.9m;

[0100] (4) Carding process

[0101] Cylinder speed 280r / min, licker-in speed 670r / min, doffer speed 16r / min, flat plate speed 140mm / min, cylinder and licker-in gauge 7 inches, feed plate and licker-in gauge 20 inches, cylinder and doffer gauge 4 inches, cylinder and flat plate 5-point gauge 8 inches × 7 inches × 7 inches × 7 inches × 8 inches, dust removal knife height and machine frame level, knife back and machine frame horizontal angle 90 degrees, carding dry weight 16.1g / m;

[0102] (5) Drawing process

[0103] One batch of 6 strands, dry weight 14g / 5m, roller gauge 10mm×18mm, mechanical draft 6.8 times, rear draft 1.6 times; Two batches of 7 strands, dry weight 13.5g / 5m, roller gauge 10mm×18mm, mechanical draft 7 times, rear draft 1.3 times;

[0104] (6) Roving process

[0105] The twist of the roving is 6.5 twists / 10cm, the roller gauge is 22.5mm×37mm, the draft in the back zone is 1.22 times, the jaw gauge is 7mm, the dry weight of the roving is 2.7g / 10m, the mechanical draft is 10.2 times, the front roller speed is 130r / min, the wet weight is 2.91g / 10m, the number of tex is 291tex, the twist coefficient is 110, the front roller diameter is 28mm, and the number of palm windings is 2 turns;

[0106] (7) Spinning process

[0107] The spun yarn is produced by compact siro spinning on the FA506 spinning frame, with a mechanical drafting multiple of 63.6 times, a roller gauge of 17mm×38mm, a rear zone drafting multiple of 1.18 times, a jaw gauge of 3mm, a front roller diameter of 27mm, a front roller speed of 104r / min, a twist of 125 twists / 10cm, a twist coefficient of 391, a steel collar model of PG1 / 2-3854, and a steel traveler model of OSS9 / 0;

[0108] (8) Winding process

[0109] Electro-clearing parameters: cotton neps N: 500%, short thick S: 160%×1.6cm, long thick L: 45%×40cm, thin thin T: -45%×40cm, producing J long / temperature regulated 70 / 30 9.8tex tight single yarn, which is a combed long-staple cotton and temperature regulated fiber high-count blended yarn.

[0110] Performance Testing

[0111] The relevant properties of the temperature-regulating fiber blended yarns produced in Example 1 and Comparative Examples 1-4 were tested according to conventional methods or national standards in the textile field. The test results are shown in Table 1 below:

[0112] Table 1

[0113]

[0114] It can be seen from the data in Table 1 above that the quality of the thermostatic fiber blended knitting yarn prepared in the above Example 1 is good, and it has the advantages of uniform yarn, high strength, and bidirectional thermostatic adjustment; the knitted fabric made of the blended yarn has the advantages of bidirectional thermostatic adjustment, comfort, breathability and moisture permeability, and can be used to make infant knitted clothing. At the same time, it can be seen from the data of Comparative Examples 1-3 that when the temperature and humidity, antistatic agent, and special parts change, the phenomenon of blocking the bell mouth and returning the flowers appears in the drawing process, and the quality of the blended yarn finally obtained is significantly reduced. Comparative Example 4 uses a compact siro-spun yarn produced by blending long-staple cotton and thermostatic fiber. It is produced by compact siro-spinning, combining the advantages of compact spinning and siro-spinning, so that the single yarn has high strength, compact structure, and good wear resistance. From the comparison of yarn indexes, the compact spun yarn produced by blending fine-staple cotton and thermostatic fiber in Example 1 achieves the same effect. The thermostatic fiber blended knitting yarn produced in Examples 2 and 3 has performance comparable to that of the thermostatic fiber blended knitting yarn in Example 1.

[0115] The specific implementation of the present invention described above does not constitute a limitation on the protection scope of the present invention. Any other corresponding changes and modifications made based on the technical concept of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A thermoregulating fiber blended knitting yarn, characterized in that: The fine-staple cotton is blended with the thermoregulating fiber, wherein the mass proportion of the fine-staple cotton is 70-80%, and the mass proportion of the thermoregulating fiber is 20-30%.

2. The temperature regulating fiber blended knitting yarn according to claim 1, characterized in that: The performance standards of the temperature-regulating fiber include: specific strength 2.2-2.33CN / dtex, elongation at break 16-16.6%, linear density 2.2-2.3dtex, length 37-38mm; and / or, the performance standards of the fine-staple cotton include: specific strength 28-29.2CN / dtex, length 28-29.5mm, impurities 2.1-2.2%, 20mm short fiber rate (weight) within 29%, and foreign fibers ≤1g / ton.

3. A method for producing the temperature regulating fiber blended knitting yarn according to any one of claims 1 to 2, characterized in that: The fiber is produced through a pretreatment process, a cotton cleaning process, a carding process, a drawing process, a roving process, a spinning process and a winding process in sequence; the pretreatment process comprises: putting the temperature-regulating fiber into a round table, spraying an antistatic agent solution on the temperature-regulating fiber, a cotton plucking machine grabbing the temperature-regulating fiber, repacking the temperature-regulating fiber, and sealing the temperature-regulating fiber with a cover cloth.

4. The method for producing temperature-regulating fiber blended knitting yarn according to claim 3, characterized in that: The antistatic agent solution is obtained by mixing the antistatic agent and water in a volume ratio of 1:(1-1.2).

5. The method for producing the temperature regulating fiber blended knitting yarn according to claim 3, characterized in that: The cotton cleaning process includes: the temperature-regulated fibers are rolled separately, the beater speed of the cotton plucker is 926-936 r / min, the beater blade height is 1-1.2 mm, the beater speed of the cotton blender is 485-490 r / min, and the cotton roll weight is 11.5-12 kg.

6. The method for producing temperature-regulating fiber blended knitting yarn according to claim 3, characterized in that: The carding process includes: cylinder speed 250-260r / min, licker-in speed 450-460r / min, doffer speed 15-16r / min, cover speed 120-125mm / min, cylinder and licker-in gauge 6-7 inches, feed plate and licker-in gauge 17-18 inches, cylinder and doffer gauge 3-4 inches, carded cotton dry weight is 22-22.5g / 5m.

7. The method for producing temperature-regulating fiber blended knitting yarn according to claim 3, characterized in that: The humidity in the drawing process is controlled at above 66%.

8. The method for producing temperature-regulating fiber blended knitting yarn according to claim 7, characterized in that: The drawing process includes: one pre-drawing and three drawing steps, the pre-drawing is 8 temperature-adjusting fibers, the dry weight is 18.6-19g / 5 meters, and the roller spacing is 12mm×20mm; one drawing is 5 fibers, and the drawing is distributed into 4 combed fine cotton strips and 1 temperature-adjusting pre-drawing, with a dry weight of 17.5-18g / 5 meters; the second drawing is 8 fibers, the dry weight is 17.1-17.5g / 5 meters, and the mechanical draft is 8.02-8.05 times; the third drawing is 8 fibers, and the dry weight is 17-17.5g / 5 meters.

9. The method for producing temperature-regulating fiber blended knitting yarn according to claim 3, characterized in that: The roving process includes: the roving twist is 4.8-5 twists / 10cm, the roller gauge is 10mm×23mm×35mm, and the roving dry weight is 4.37-4.4g / 10m; and / or, the spun yarn process includes: the roller gauge is 17.5mm×37.5mm, the rear zone drafting multiple is 1.18-1.2 times, the jaw gauge is 4-4.5mm, the front roller diameter is 27-27.5mm, the front roller speed is 73-75r / min, and the twist is 113-115 twists / 10cm.

10. Use of the temperature-regulating fiber blended knitting yarn according to any one of claims 1 to 2 or the temperature-regulating fiber blended knitting yarn produced by the production method according to any one of claims 3 to 9 in making knitted clothing for infants and young children.

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