A method for preparing crystal fiber blended yarn

Abstract

The invention relates to a preparation method of a crystalline fiber blended yarn, comprising: weighing the following raw materials according to the mass percentage of the fibers at a standard moisture regain: 50% to 70% of crystalline fiber and 30% to 50% of acrylic fiber; then pre-treating the crystalline fiber to obtain raw material 1; mixing the raw material 1 with the acrylic fiber in a small sample blending manner to obtain a mixture, then sequentially grabbing the mixture through a disc grabber, opening it through a mixed cotton opener, and combing it into strips through a carding machine, thereby obtaining raw material 2; drawing the raw material 2 to obtain raw material 3; conducting a roving process on the raw material 3 to obtain raw material 4; conducting a spun yarn process on the raw material 4 to obtain raw material 5; conducting a bobbin process on the raw material 5 to obtain raw material 6; conducting a doubling and doubling process on the raw material 6 to obtain a crystalline fiber blended yarn, wherein the prepared crystalline fiber blended yarn can be dyed at room temperature in one go, does not require high temperature and high pressure conditions, reduces costs, reduces pollution, and has good hand feel and warmth retention.

Description

Technical Field

[0001] The invention relates to the technical field of textiles, and in particular to a method for preparing a crystal fiber blended yarn. Background Art

[0002] Crystal fiber is a new research and development project of domestic polyester staple fiber production enterprises in recent years. It aims to combine the polyester fiber manufacturing process with the acrylic fiber manufacturing process, and complete the process grafting and transformation. The modified polyester is called "crystal fiber". Existing spinning products are usually made of a mixture of polyester fiber and acrylic fiber. However, due to the large difference in physical properties between polyester raw materials and acrylic raw materials, the spinning products produced require high temperature and high pressure conditions for coloring, and the coloring rate is low. In addition, the spinning products produced have problems such as low moisture regain, poor hand feel, and low warmth retention. Summary of the invention

[0003] The invention provides a method for preparing a crystal fiber blended yarn. The prepared crystal fiber blended yarn can be directly dyed without high temperature and high pressure conditions, and has good hand comfort and warmth retention.

[0004] In order to solve the above technical problems, a technical solution adopted by the present invention is: to provide a method for preparing a crystal fiber blended yarn, comprising the following steps:

[0005] Step 1: Weigh the following raw materials according to the mass percentage of the fibers at the specified moisture regain: 50% to 70% of crystal fiber and 30% to 50% of acrylic fiber;

[0006] Step 2: pre-treating the crystal fiber: adding an auxiliary agent to the crystal fiber at a ratio of 1.5% to 3%, and curing for 24 to 48 hours to obtain raw material 1;

[0007] Step 3: Mixing the raw material 1 and the acrylic fiber in a small sample blending method to obtain a mixture, and then sequentially passing the mixture through a disc cotton grabber, a mixed cotton opener, and a cotton carding machine to comb the mixture into strips, thereby obtaining raw material 2;

[0008] Step 4: Drawing the raw material 2 to obtain the raw material 3;

[0009] Step 5: Processing raw material 3 into roving to obtain raw material 4;

[0010] Step 6: Processing the raw material 4 into a spinning yarn to obtain the raw material 5;

[0011] Step 7: winding the raw material 5 to obtain the raw material 6;

[0012] Step 8: After the raw material 6 is subjected to doubling and twisting treatment, the crystal fiber blended yarn is obtained.

[0013] Furthermore, the pretreatment of the crystalline fiber includes:

[0014] The auxiliary agent is obtained by fully mixing 0.5% to 1% of an electrostatic agent, 0.5% to 1% of a penetrant, 1% to 1.5% of crude oil and 96.5% to 98% of water and letting it stand for 30 minutes.

[0015] Furthermore, the disc beater speed of the disc plucking machine is 600r / min, the combing needle beater speed of the mixed cotton opening machine is 200r / min-240r / min, and the cotton carding machine output speed is 50m / min.

[0016] Furthermore, the drawing process is carried out by a three-pass mixed drawing process, wherein the three-pass mixed drawing process is as follows: in the first pass, 8 raw materials 2 are fed into the drawing frame to make one raw material 2a; in the second pass, 8 raw materials 2a are fed into the drawing frame to make one raw material 2b; and in the third pass, 8 raw materials 2b are fed into the drawing frame to make one raw material 3.

[0017] Furthermore, the roving process is to put the raw material 3 into a roving frame for drafting, and then twisting to obtain the raw material 4.

[0018] Furthermore, the spun yarn processing is to perform secondary drafting on the raw material 4, increase the drafting multiple, and then twist it to obtain the raw material 5.

[0019] Furthermore, the winding process is to process the raw material 5 into a bobbin on a winding machine to obtain the raw material 6.

[0020] Furthermore, the doubling and two-for-one twisting process is to put at least two raw materials 6 into a doubling machine for plying, and then put the plying raw materials into a two-for-one twisting machine for twisting and bonding into ply yarns to obtain crystal fiber blended yarn.

[0021] Furthermore, the doubling speed of the doubling machine is 560-580 m / min.

[0022] The beneficial effects of the present invention are as follows: in the preparation method of the crystal fiber blended yarn of the present invention, firstly, 50% to 70% of crystal fiber and 30% to 50% of acrylic fiber are weighed according to the mass percentage of the fibers at the official moisture regain, and then the crystal fiber is pretreated to obtain raw material 1, and then the raw material 1 and the acrylic fiber are mixed in a small sample blending method to obtain a mixture, and then the mixture is sequentially grasped by a disc grasping machine, opened by a mixing and opening machine, and combed into strips by a carding machine, so as to obtain raw material 2; raw material 2 is subjected to drawing treatment, Raw material 3 is obtained; raw material 3 is processed into coarse yarn to obtain raw material 4; raw material 4 is processed into fine yarn to obtain raw material 5; raw material 5 is processed into bobbins to obtain raw material 6; finally raw material 6 is processed into parallel yarn and double twisting to obtain crystal fiber blended yarn. Through the above method, crystal fiber can be used to obtain blended yarn, which expands the application field of crystal fiber and the source of high-quality spinning raw materials. The obtained crystal fiber blended yarn can adopt acrylic fiber dyeing process under normal temperature and pressure, without high temperature and high pressure conditions, and has good hand comfort and warmth retention. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work, among which:

[0024] Figure 1 The present invention provides a synthesis process diagram of a method for preparing a crystal fiber blended yarn. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] raw material:

[0027] The raw materials used in the embodiments of the present invention are all commercially available products unless otherwise specified below.

[0028] Crystalline fiber is selected from Jiangyin Huahong Chemical Fiber Co., Ltd.

[0029] Acrylic fiber is selected from Jilin Chemical Fiber Co., Ltd.

[0030] A method for preparing a crystal fiber blended yarn comprises the following steps:

[0031] Step 1: Weigh the following raw materials according to the mass percentage of the fibers at the specified moisture regain: 50% to 70% of crystal fiber and 30% to 50% of acrylic fiber;

[0032] Step 2: Pre-treat the crystal fiber: add an auxiliary agent to the crystal fiber at a ratio of 1.5% to 3%, and infiltrate for 24 to 48 hours to obtain raw material 1. By adding the auxiliary agent and infiltrating for 24 to 48 hours, the auxiliary agent can be fully penetrated into the crystal fiber, and the raw material 1 with the best spinnability can be obtained, ensuring the spinnability and yarn quality of the subsequent process.

[0033] Step 3: Mixing the raw material 1 and the acrylic fiber in a small sample blending method to obtain a mixture, and then sequentially passing the mixture through a disc cotton grabber, a mixed cotton opener, and a cotton carding machine to comb the mixture into strips, thereby obtaining raw material 2;

[0034] Step 4: Drawing the raw material 2 to obtain the raw material 3;

[0035] Step 5: Processing raw material 3 into roving to obtain raw material 4;

[0036] Step 6: Processing the raw material 4 into a spinning yarn to obtain the raw material 5;

[0037] Step 7: winding the raw material 5 to obtain the raw material 6;

[0038] Step 8: After the raw material 6 is subjected to doubling and twisting treatment, the crystal fiber blended yarn is obtained.

[0039] Among them, in step one, by calculating the mixing ratio according to the fiber's standard weight at regain, the accuracy of the mixing ratio can be ensured.

[0040] In step 2, the auxiliary agent can be obtained by the following method: 0.5% to 1% of an electrostatic agent, 0.5% to 1% of a penetrant, 1% to 1.5% of crude oil and 96.5% to 98% of water are fully mixed and allowed to stand for 30 minutes to obtain the auxiliary agent.

[0041] Among them, the above-mentioned components of the auxiliary agent are configured according to the characteristics of the crystal fiber. The specific model and addition ratio of each component of the auxiliary agent can be fine-tuned according to seasonal temperature and humidity, raw material resuscitation, oil content, etc. Among them, by making the addition ratio of each component 0.5% to 1% of electrostatic agent, 0.5% to 1% of penetrant, 1% to 1.5% of crude oil and 96.5% to 98% of water, the raw material 1 with the best spinnability can be obtained.

[0042] Wherein, in step three, the raw material 1 and the acrylic fiber are mixed by a small sample cotton mixing method. Specifically, the raw material 1 and the acrylic fiber are placed in a container, and then the container is heated to 25°C to 30°C, and the container is left to stand for 30min to 45min at a temperature of 25°C to 30°C to obtain a mixture with uniform color. For example, the temperature of the container can be heated to 30°C, which is conducive to ensuring that the fibers are fully mixed and uniform, and avoiding the phenomenon of uneven mixing and the appearance of flower yarn. Wherein, the specific mixing amount can be, for example: a total of 10 times of mixing of raw material 1 and acrylic fiber, each time the total mixing amount of raw material 1 and acrylic fiber is 200 kg, according to the public moisture regain calculation, raw material 1 is in the range of 60 to 140 kg, acrylic fiber is in the range of 140 to 60 kg, and after 10 times of mixing, about 2000±10 kg of the mixture is obtained.

[0043] Among them, in step 3, the model of the disc plucker is FA002, the disc beater speed is 600r / min, the rib extension distance is -2mm, and the gap drop distance is 2mm. The model of the mixed cotton opening machine is FA306, and the combing needle beater speed is 200r / min-240r / min. The model of the carding machine is FA186, the sliver delivery speed is 50m / min, the raw sliver weight is 25g / 5m, the cylinder speed is 330rm, the secondary roller speed is 600pm, and the cover speed is 195mm / min.

[0044] In the step 4, the drawing process is carried out by a three-pass mixed drawing process. The three-pass mixed drawing process is specifically as follows: in the first pass, 8 raw materials 2 are fed into the drawing frame to make one raw material 2a, in the second pass, 8 raw materials 2a are fed into the drawing frame to make one raw material 2b, and in the third pass, 8 raw materials 2b are fed into the drawing frame to make one raw material 3. It should be noted that the signal of the drawing frame is FA306, wherein in the above-mentioned first process, the process parameters of the drawing frame are a fixed weight of 22.5g / 5m, a total drafting multiple of 8.9 times, a post-drafting of 1.8 times, a roller gauge of 30*57, and a strip speed of 300m / min. In the second and third processes, the process parameters of the drawing frame are a fixed weight of 22g / 5m, a total drafting multiple of 8.18 times, a post-drafting of 1.5 times, a roller gauge of 30*57, a bell mouth specification of 7F / 3.8, and a strip speed of 300m / min.

[0045] In the embodiment of the present invention, the drawing adopts three-pass drawing, which can fully ensure the mixing of fibers and avoid the phenomenon of yarn spots during dyeing due to uneven mixing. The matching of the drafting and the number of combined roots can reduce the deterioration of the yarn evenness caused by excessive drafting multiples.

[0046] Among them, in step 5, the roving process is: put the raw material 3 into the roving frame for drafting, and then twist it to obtain the raw material 4. It should be noted that the raw material 3 is put into the spindle tube in the roving frame A458 without iron cannon. The spindle tube is a device for placing the raw material 3. In order to ensure the cleanliness of the raw material 3, it is necessary to clean it once every two batches of raw material 3.

[0047] The model of the roving frame is A458, and its process parameters are: roving fixed weight 7g / 10m, twist 2.6 twists / 10cm, total draft 8.8 times, post draft 1.44 times, roller gauge 42*45, jaw gauge 6mm, and spindle speed 750rpm.

[0048] In step six, the spinning process is to perform secondary drafting on the raw material 4, increase the drafting multiple, and then twist it to obtain the raw material 5. It should be noted that the spinning machine needs to adopt a relatively large drafting gauge and a jaw process gauge for single spindle control of the spinning, which can reduce the bellows caused by the broken ends of the spinning, reduce consumption, and improve efficiency. It should be noted that the model of the spinning machine is FA516, and the process parameters are: count: 36 public counts, drafting multiple: post-drafting multiple 1.1 times, jaw gauge block 3.5mm, twist 50 twists / 10cm, roller gauge 22*40, spindle speed 10000rpm, wire ring 5#.

[0049] In step 7, the winding process is to process the raw material 5 into a bobbin on a winding machine to obtain the raw material 6. The winding machine is an automatic winding machine, and the electronic cutting defect threshold can be set according to the requirements of the sweater knitting yarn to control the shear number within 5 per 10,000 meters. The winding speed is 1300m / min, and the electronic yarn clearer channel is set to: thick section +50%, thin section -50%, cotton knot +200%.

[0050] In step eight, the doubling and two-for-one twisting process is to put at least two groups of raw materials 6 into a doubling machine for plying, and then put the plying raw materials into a two-for-one twisting machine for twisting and bonding into ply yarns to obtain crystal fiber blended yarns.

[0051] The doubling machine model is DX2310, and the doubling speed is 560-580 m / min. Due to the coarse yarn count, a higher speed doubling is adopted. The doubling adopts the increased fan speed and increased blowing and suction air volume to avoid short fibers and flying flowers from being attached to the doubling yarn. The double twisting machine model is DX321G, and the double twisting speed is 5500. The single spindle maintenance can be strengthened regularly to avoid the formation of weak twisted yarn.

[0052] In other embodiments, the yarn process in step 1 requires a yarn count of 28 metric counts, and the allowable range of the blending ratio of each fiber count is ±2%.

[0053] Example:

[0054] Example 1

[0055] A method for preparing a crystal fiber blended yarn comprises the following steps:

[0056] Step 1: Weigh 51% of crystal fiber and 49% of acrylic fiber according to the mass percentage of the fibers at the official moisture regain;

[0057] Step 2: pre-treating the crystal fiber: adding an auxiliary agent to the crystal fiber at a ratio of 1.5% to 3%, and curing for 24 to 48 hours to obtain raw material 1;

[0058] Step 3: Mixing the raw material 1 and the acrylic fiber in a small sample blending method to obtain a mixture, and then sequentially passing the mixture through a disc cotton grabber, a mixed cotton opener, and a cotton carding machine to comb the mixture into strips, thereby obtaining raw material 2;

[0059] Step 4: Drawing the raw material 2 to obtain the raw material 3;

[0060] Step 5: Processing raw material 3 into roving to obtain raw material 4;

[0061] Step 6: Processing the raw material 4 into a spinning yarn to obtain the raw material 5;

[0062] Step 7: winding the raw material 5 to obtain the raw material 6;

[0063] Step 8: After the raw material 6 is subjected to doubling and twisting treatment, the crystal fiber blended yarn is obtained.

[0064] Embodiment 2:

[0065] A method for preparing a crystal fiber blended yarn comprises the following steps:

[0066] Step 1: Weigh 70% of crystal fiber and 30% of acrylic fiber according to the mass percentage of the fibers at the specified moisture regain;

[0067] Step 2: pre-treating the crystal fiber: adding an auxiliary agent to the crystal fiber at a ratio of 1.5% to 3%, and curing for 24 to 48 hours to obtain raw material 1;

[0068] Step 3: Mixing the raw material 1 and the acrylic fiber in a small sample blending method to obtain a mixture, and then sequentially passing the mixture through a disc cotton grabber, a mixed cotton opener, and a cotton carding machine to comb the mixture into strips, thereby obtaining raw material 2;

[0069] Step 4: Drawing the raw material 2 to obtain the raw material 3;

[0070] Step 5: Processing raw material 3 into roving to obtain raw material 4;

[0071] Step 6: Processing the raw material 4 into a spinning yarn to obtain the raw material 5;

[0072] Step 7: winding the raw material 5 to obtain the raw material 6;

[0073] Step 8: After the raw material 6 is subjected to doubling and twisting treatment, the crystal fiber blended yarn is obtained.

[0074] Compared with the above-mentioned Examples 1 to 2, the difference is that the content of each component is different.

[0075] Comparative Example Raw Materials Crystalline Fiber Acrylic Fiber Example 1 51％ 49％ Example 2 70％ 30％

[0076] Performance testing: The crystal fiber blended yarns prepared in Examples 1 and 2 were subjected to touch testing by inspectors.

[0077] Sensory evaluation of experimental groups 1 and 2 blended yarns with nylon fibers:

[0078] The sensory evaluation items are hand comfort and thermal insulation performance; each item is scored from 1 to 5 points, with 1 point as the minimum scoring unit. The more comfortable the hand feel and the better the thermal insulation, the higher the score; the worse the hand feel and the poorer the thermal insulation, the lower the score;

[0079] Evaluation procedure: 10 inspectors with 5 to 10 years of experience in the textile industry are appointed as assessors. All assessors are in good health. Each assessor is provided with 1 to 2 test sample groups for tactile and thermal insulation evaluation. After each tactile and thermal insulation sample is evaluated, a corresponding score is made on the score sheet. There must be at least 15 minutes between the tactile and thermal insulation evaluations of two samples, and the hand feel must be restored to normal, and the test is measured with a thermometer.

[0080] Comparison of scaled score items Feel Keep warm Experimental Group 1 5 4 Experimental Group 2 5 5

[0081] According to the sensory evaluation results, it can be seen that under the same feel and similar warmth retention, the cost performance of crystal fiber is much higher than that of acrylic fiber. The reason is that the price difference between crystal fiber and acrylic fiber is extremely large, with a price difference of more than 40%. The scores of experimental group 2 are significantly higher than those of other experimental groups, indicating that the crystal fiber blended yarn made with the ingredients mentioned above and a suitable ratio has good feel, comfort and warmth retention when used in textiles.

[0082] In addition, the crystal fiber blended yarn produced by this scheme is compared with the existing materials as follows:

[0083] Comparative material 1: 100% acrylic yarn;

[0084] Comparative material 2: blended yarn containing 51% polyester fiber and 49% acrylic fiber.

[0085]

[0086]

[0087] According to the sensory evaluation results, it can be seen that the scoring results of experimental group 2 are no different from those of acrylic yarn in terms of hand feel and warmth retention, indicating that the crystal fiber blended yarn made with the ingredients mentioned above and a suitable ratio has a much higher cost-effectiveness than acrylic fiber under the same hand feel and similar warmth retention. The reason is that the price difference between crystal fiber and acrylic fiber is extremely large, with a price difference of more than 40%, and it has good hand comfort and warmth retention when used in crystal fiber blended yarn.

[0088] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A method for preparing a crystal fiber blended yarn, characterized in that: The following steps are involved: Step 1: Weigh the following raw materials according to the mass percentage of the fibers at the specified moisture regain: 70% crystal fiber and 30% acrylic fiber; Step 2: pretreating the crystal fiber: adding an auxiliary agent to the crystal fiber at a ratio of 1.5% to 3%, and infiltrating for 24 to 48 hours to obtain raw material 1, wherein the auxiliary agent is obtained by the following method: 0.5% to 1% of an electrostatic agent, 0.5% to 1% of a penetrant, 1% to 1.5% of crude oil and 96.5% to 98% of water are fully mixed, and allowed to stand for 30 minutes to obtain the auxiliary agent; Step 3: Mixing the raw material 1 and the acrylic fiber by a small sample blending method to obtain a mixture. The specific mixing method is to put the raw material 1 and the acrylic fiber into a container, and then heat the container to 25°C to 30°C, and let it stand for 30min to 45min at a temperature of 25°C to 30°C; then, the mixture is sequentially grasped by a disc cotton grasper, opened by a mixing cotton opener, and combed into strips by a cotton carding machine, so as to obtain raw material 2; Step 4: Drawing the raw material 2 to obtain the raw material 3; Step 5: Processing raw material 3 into roving to obtain raw material 4; Step 6: Processing the raw material 4 into a spinning yarn to obtain the raw material 5; Step 7: winding the raw material 5 to obtain the raw material 6; Step 8: After the raw material 6 is subjected to doubling and twisting treatment, a crystal fiber blended yarn is obtained; The disc beater speed of the disc plucker is 600r / min, the combing needle beater speed of the mixed cotton opening machine is 200r / min-240r / min, and the sliver output speed of the carding machine is 50m / min; The drawing process is carried out by a three-pass mixed drawing process, wherein the three-pass mixed drawing process is as follows: in the first pass, eight raw materials 2 are fed into a drawing frame to form one raw material 2a; in the second pass, eight raw materials 2a are fed into a drawing frame to form one raw material 2b; and in the third pass, eight raw materials 2b are fed into a drawing frame to form one raw material 3; The roving treatment is to put the raw material 3 into a roving frame for drafting, and then twisting to obtain the raw material 4; The spun yarn processing is to perform secondary drafting on the raw material 4, increase the drafting multiple, and then twist it to obtain the raw material 5; The winding process is to process the raw material 5 into a bobbin on a winding machine to obtain the raw material 6; The doubling and two-for-one twisting process is to put at least two groups of raw materials 6 into a doubling machine for plying, and put the plying raw materials into a two-for-one twisting machine for twisting and bonding into ply yarns to obtain a crystal fiber blended yarn; The doubling speed of the doubling machine is 560-580 m / min.

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