CN115852541A - A kind of preparation method of crystal fiber blended yarn - Google Patents

Abstract

The invention relates to a method for preparing a crystal fiber blended yarn, comprising: weighing the following raw materials according to the mass percentage of the fiber at a predetermined moisture regain: 50% to 70% crystal fiber and 30% to 50% acrylic fiber; The crystal fiber is pretreated to obtain the raw material 1; the raw material 1 and the acrylic fiber are mixed by a small sample mixing method to obtain a mixture, and then the mixture is sequentially grasped by a disc catching machine and mixed with the cotton opener Raw material 2 is obtained by opening and carding by a carding machine; raw material 2 is drawn to obtain raw material 3; raw material 3 is subjected to roving processing to obtain raw material 4; raw material 4 is spun to obtain raw material 5 Carry out winding treatment to raw material 5, obtain raw material 6; After raw material 6 is carried out doubling and two-for-one twisting treatment, obtain crystal fiber blended yarn, the prepared crystal fiber blended yarn can be dyed at room temperature at one time, without High temperature and high pressure conditions, reduce costs, reduce pollution and have good feel and warmth.

Description

A kind of preparation method of crystal fiber blended yarn

technical field

The invention relates to the technical field of textiles, in particular to a method for preparing crystal fiber blended yarn.

Background technique

Crystalline fiber is a new research and development project of domestic polyester staple fiber production enterprises in recent years. It aims to combine the manufacturing process of polyester fiber with the manufacturing process of acrylic fiber, and carry out process grafting and transformation. The modified polyester is called " Crystalline". Existing spinning products are usually made by mixing polyester fibers and acrylic fibers. However, due to the large difference in physical properties between polyester and acrylic raw materials, the obtained spinning products require high temperature and high pressure conditions for coloring, and The dyeing rate is low, and there are problems such as low moisture regain, poor hand feeling and low warmth retention property in the spun product obtained.

Contents of the invention

The invention provides a method for preparing 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 feeling and warmth retention.

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:

Step 1: Weigh the following raw materials according to the mass percentage of the fiber under the established moisture regain: 50% to 70% crystal fiber and 30% to 50% acrylic fiber;

Step 2: Pretreating the crystal fiber: adding additives to the crystal fiber at a ratio of 1.5% to 3%, curing and infiltrating for 24 to 48 hours to obtain raw material 1;

Step 3: Mix the raw material 1 and the acrylic fiber by using a small sample mixing method to obtain a mixture, and then the mixture is sequentially grabbed by a disc plucking machine, opened by a mixing opener and processed by a carding machine. Carding into strips to obtain raw material 2;

Step 4: draw the raw material 2 to obtain the raw material 3;

Step 5: Perform roving treatment on raw material 3 to obtain raw material 4;

Step 6: Carry out spun processing on raw material 4 to obtain raw material 5;

Step 7: Winding raw material 5 to obtain raw material 6;

Step 8: After doubling and two-for-one twisting on the raw material 6, a crystal fiber blended yarn is obtained.

Further, the pretreatment of the crystal fiber fiber includes:

Fully mix 0.5%-1% of electrostatic agent, 0.5%-1% of penetrating agent, 1%-1.5% of crude oil and 96.5%-98% of water, and stand for 30 minutes to obtain the auxiliary agent.

Further, the disc beating speed of the disc plucker is 600r/min, the card beating speed of the mixed opener is 200r/min-240r/min, and the sliver speed of the carding machine is 50m/min .

Further, the drawing process is carried out using three mixed drawing processes, the three mixed drawing processes are as follows: in the first pass, 8 raw materials 2 are fed into the draw frame to make a raw material 2a, and in the second pass The first way feeds 8 raw materials 2a into the draw frame to make a raw material 2b, and the third way feeds 8 raw materials 2b into the draw frame to make a raw material 3.

Further, the roving treatment includes putting the raw material 3 into a roving frame for drafting, and then twisting to obtain the raw material 4 .

Further, the spun yarn treatment is to draw the raw material 4 twice, increase the drafting ratio, and then perform twisting to obtain the raw material 5 .

Further, the winding process is to process the raw material 5 into a bobbin on a winding machine to obtain the raw material 6 .

Further, the doubling and two-for-one twisting process is to put at least two raw materials 6 into the doubling machine for plying, and put the plyed raw materials into the two-for-one twisting machine for twisting and bonding into strands to obtain a crystal fiber blend. spinning.

Further, the doubling speed of the doubling machine is 560-580 m/min.

The beneficial effects of the present invention are: in the preparation method of the crystal fiber blended yarn of the present invention, firstly weigh 50% to 70% of the crystal fiber and 30% to 50% of the acrylic fiber according to the mass percentage of the fiber at a given moisture regain. Two kinds of raw materials, and then the crystal fiber is pretreated to obtain the raw material 1, and then the raw material 1 and the acrylic fiber are mixed by a small sample mixing method to obtain a mixture, and then the mixture is sequentially grasped by a disc catching machine The raw material 2 is obtained by taking and mixing the cotton opener for opening and the carding machine for carding into slivers; drawing the raw material 2 to obtain the raw material 3; performing roving processing on the raw material 3 to obtain the raw material 4; Spun yarn processing to obtain raw material 5; winding raw material 5 to obtain raw material 6; finally, after paralleling and two-for-one twisting treatment on raw material 6, crystal fiber blended yarn is obtained. Through the above method, crystal fiber can be used Obtaining blended yarns expands the application field of crystal fiber fibers and expands the source of high-quality spinning raw materials, and the obtained crystal fiber blended yarns can be dyed with acrylic fibers under normal temperature and pressure without the need for high temperature and high pressure conditions, and Has good hand comfort and warmth.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings that need to be used in the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings without creative work, wherein:

Fig. 1 is a schematic flow chart of the preparation method of a crystal fiber blended yarn provided by the present invention.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

raw material:

The raw materials used in each embodiment of the present invention are all commercially available products except for the following special instructions.

Crystal fiber is selected from Jiangyin Huahong Chemical Fiber Co., Ltd.

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

A preparation method of crystal fiber blended yarn, which comprises the following steps:

Step 1: Weigh the following raw materials according to the mass percentage of the fiber under the established moisture regain: 50% to 70% crystal fiber and 30% to 50% acrylic fiber;

Step 2: pretreating the crystal fiber: adding additives to the crystal fiber at a ratio of 1.5% to 3%, curing and infiltrating for 24 to 48 hours to obtain the raw material 1. By adding additives and soaking for 24-48 hours, the additives can fully penetrate into the crystal fiber, and the best spinnable raw material 1 can be obtained to ensure the spinnability and yarn quality of the subsequent process.

Step 3: Mix the raw material 1 and the acrylic fiber by using a small sample mixing method to obtain a mixture, and then the mixture is sequentially grabbed by a disc plucking machine, opened by a mixing opener and processed by a carding machine. Carding into strips to obtain raw material 2;

Step 4: draw the raw material 2 to obtain the raw material 3;

Step 5: Perform roving treatment on raw material 3 to obtain raw material 4;

Step 6: Carry out spun processing on raw material 4 to obtain raw material 5;

Step 7: Winding raw material 5 to obtain raw material 6;

Step 8: After doubling and two-for-one twisting on the raw material 6, a crystal fiber blended yarn is obtained.

Wherein, in step 1, the accuracy of the mixing ratio can be ensured by calculating the proportioning ratio according to the weight under the conventional moisture regain of the fiber.

In step 2, the auxiliary agent can be obtained in the following way: 0.5% to 1% of electrostatic agent, 0.5% to 1% of penetrating agent, 1% to 1.5% of crude oil and 96.5% to 98% Mix well with water, let it stand for 30min, and get the additive.

Among them, the above-mentioned components of the auxiliary agent are configured according to the characteristics of the crystal fiber, and the specific models and addition ratios of each component of the auxiliary agent can be fine-tuned according to the seasonal temperature and humidity, raw material regain, oily state, etc., wherein, by making each group The addition ratio of 0.5% to 1% of electrostatic agent, 0.5% to 1% of penetrating agent, 1% to 1.5% of crude oil and 96.5% to 98% of water can obtain the best spinnability raw material 1.

Wherein, in step 3, the raw material 1 and the acrylic fiber are mixed by using a sample mixing method. Specifically, put raw material 1 and acrylic fibers into a container, then heat the container to 25°C-30°C, and let it stand at 25°C-30°C for 30min-45min to obtain a mixture with uniform color. For example, the temperature of the container can be heated to 30°C, which is beneficial to ensure that the fibers are fully mixed and evenly mixed, and avoid the appearance of yarns caused by uneven mixing. 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 amount of mixing of raw material 1 and acrylic fiber is 200 kg, calculated according to the public moisture regain, raw material 1 is in the range of 60 to 140 kg Inside, the acrylic fiber is 140-60 kg, and after 10 times of mixing, a mixture of 2000±10 kg is obtained.

Among them, in the three steps, the model of the disc plucking machine is FA002, the speed of the disc beater is 600r/min, the protruding rib distance is -2mm, and the gap drop distance is 2mm. The model of the mixed opener is FA306, and its combing 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 flat speed is 195mm/min.

In the fourth step, the drawing process is carried out using three mixed drawing processes. Among them, the three-pass mixed drawing frame process is as follows: in the first pass, 8 raw materials 2 are fed to the draw frame to make a raw material 2a; in the second pass, 8 raw materials 2a are fed to the draw frame to make a draw frame. Raw material 2b, the third way feeds 8 raw materials 2b into the draw frame to make a raw material 3. It should be noted that the signal of the draw frame is FA306, and in the above first process, the process parameters of the draw frame are 22.5g/5m, the total draft ratio is 8.9 times, and the post draft is 1.8 times , roller gauge 30*57, strip speed 300m/min. In the second and third processes, the process parameters of the draw frame are fixed weight 22g/5m, total draft ratio 8.18 times, post draft 1.5 times, roller gauge 30*57, bell mouth specification 7F/3.8 , Strip speed 300m/min.

In the embodiment of the present invention, the drawing is combined in three ways, which can fully ensure the fiber mixing and avoid the phenomenon of flowery yarn in the dyeing process due to uneven mixing. cause dryness to deteriorate.

Wherein, in step five, the roving treatment is as follows: put the raw material 3 into the roving frame for drafting, and then perform twisting to obtain the raw material 4 . It should be noted that the raw material 3 is put into the spindle tube of the roving frame A458 ironless cannon. The spindle tube is a device for placing the raw material 3. To ensure the cleanliness of the raw material 3, it is necessary to clean it once every two batches of raw material 3 are produced.

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

In the step 6, the spun yarn is processed as follows: the raw material 4 is drawn twice, and the drafting ratio is increased, and then twisted to obtain the raw material 5 . It should be noted that the spinning frame needs to adopt a relatively large draft gauge and jaw technology gauge spinning single-spindle control, which can reduce the bellows caused by yarn breakage, reduce consumption and improve efficiency. It should be noted that the spinning frame model is FA516, and the process parameters are: count: 36 public counts, draft ratio: rear draft ratio 1.1 times, jaw spacer 3.5mm, twist 50 twist/10cm, roller spacer The pitch is 22*40, the spindle speed is 10000rpm, and the traveler is 5#.

In the seventh step, 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, which can set the electronic cutting threshold according to the requirements of sweater knitting yarn, and control the number of cuts per 10,000 meters within 5. Among them, the winding speed is 1300m/min, and the electronic yarn clearer channel is set as: thick places +50%, fine details -50%, neps +200%.

In step eight, the doubling and two-for-one twisting process is to put at least two groups of raw materials 6 into the doubling machine for plying, and put the plyed raw materials into the two-for-one twisting machine for twisting and bonding into strands to obtain crystal fiber Fiber blended yarn.

Among them, the model of the doubling machine is DX2310, and the doubling speed of the doubling machine is 560-580 m/min. Because the yarn count is relatively thick, a higher speed doubling is adopted, and the speed of the fan is increased to increase the blowing and suction air volume. Thereby, it is possible to avoid linters and flying flowers from being attached to the doubling yarn. The model of the two-for-one twisting machine is DX321G, and the two-for-one twisting speed is 5500. The single-spindle inspection can be strengthened regularly to avoid the formation of weakly twisted yarns.

In other embodiments, the count required by the yarn process in Step 1 is 28 metric counts, and the allowable range of the blending ratio of each fiber is ±2%.

Example:

Example 1

A preparation method of crystal fiber blended yarn, comprising the following steps:

Step 1: Weigh 51% of the crystal fiber fiber and 49% of the acrylic fiber according to the mass percentage of the fiber under the established moisture regain;

Step 2: Pretreating the crystal fiber: adding additives to the crystal fiber at a ratio of 1.5% to 3%, curing and infiltrating for 24 to 48 hours to obtain raw material 1;

Step 3: Mix the raw material 1 and the acrylic fiber by using a small sample mixing method to obtain a mixture, and then the mixture is sequentially grabbed by a disc plucking machine, opened by a mixing opener and processed by a carding machine. Carding into strips to obtain raw material 2;

Step 4: draw the raw material 2 to obtain the raw material 3;

Step 5: Perform roving treatment on raw material 3 to obtain raw material 4;

Step 6: Carry out spun processing on raw material 4 to obtain raw material 5;

Step 7: Winding raw material 5 to obtain raw material 6;

Step 8: After doubling and two-for-one twisting on the raw material 6, a crystal fiber blended yarn is obtained.

Example 2:

A preparation method of crystal fiber blended yarn, comprising the following steps:

Step 1: Weigh 70% of the crystal fiber fiber and 30% of the acrylic fiber according to the mass percentage of the fiber under the established moisture regain;

Step 2: Pretreating the crystal fiber: adding additives to the crystal fiber at a ratio of 1.5% to 3%, curing and infiltrating for 24 to 48 hours to obtain raw material 1;

Step 3: Mix the raw material 1 and the acrylic fiber by using a small sample mixing method to obtain a mixture, and then the mixture is sequentially grabbed by a disc plucking machine, opened by a mixing opener and processed by a carding machine. Carding into strips to obtain raw material 2;

Step 4: draw the raw material 2 to obtain the raw material 3;

Step 5: Perform roving treatment on raw material 3 to obtain raw material 4;

Step 6: Carry out spun processing on raw material 4 to obtain raw material 5;

Step 7: Winding raw material 5 to obtain raw material 6;

Step 8: After doubling and two-for-one twisting on the raw material 6, a crystal fiber blended yarn is obtained.

Compared with the above-mentioned Examples 1-2, the difference lies in the content of each component is different.

Comparative Raw Materials Crystal fiber acrylic fiber Example 1 51% 49% Example 2 70% 30%

Performance detection test: The crystal fiber blended yarns prepared in Examples 1-2 were respectively inspected by inspectors for tactile sensation.

Sensory evaluation of crystal fiber blended yarns in experimental groups 1-2:

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

Evaluation procedure: Set up 10 inspectors who have been in the textile industry for 5 to 10 years as the evaluators. All the evaluators have no bad health conditions. Provide each evaluator with test sample groups 1 to 2 for tactile and thermal evaluation. Each tactile and After keeping a sample warm, make a corresponding score on the scoring table. There must be at least 15 minutes between the touch and warmth evaluation of the two samples, and the feel should be restored to normal state, and measured with a thermometer.

Comparative Score Items feel keep warm Experimental group 1 5 4 Experimental group 2 5 5

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 fiber is much higher than that of acrylic fiber. The scoring results of group 2 are obviously slightly higher than those of other experimental groups, which shows that the crystal fiber blended yarn prepared with the above-mentioned ingredients and a suitable ratio has good hand feeling and comfort when used in textiles. Warmth.

In addition, the crystal fiber blended yarn made by this scheme is compared with the existing materials as follows:

Comparative material 1: the content is 100% acrylic yarn;

Comparative material 2: a blended yarn with a content of 51% polyester fiber and 49% acrylic fiber.

According to the sensory evaluation results, it can be seen that there is no difference between the scoring results of the experimental group 2 and the hand feeling and warmth retention of the acrylic fiber yarn, indicating that the crystal fiber blended yarn prepared with the above-mentioned ingredients plus a suitable ratio has Under the same hand feel and similar warmth retention, the cost performance of crystal fiber is much higher than that of acrylic fiber, because the price difference between crystal fiber and acrylic fiber is very large, the price difference is more than 40%, and it is used in crystal fiber blended yarn Has good hand comfort and warmth.

The above is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process conversion made by using the description of the present invention and the contents of the accompanying drawings, or directly or indirectly used in other related technologies fields, all of which are equally included in the scope of patent protection of the present invention.

Claims (9)

1. A preparation method of a crystal fiber blended yarn is characterized by comprising the following steps:

the method comprises the following steps: weighing the following raw materials in percentage by mass of the fiber under a official moisture regain: 50 to 70 percent of crystal fiber and 30 to 50 percent of acrylic fiber;

step two: pre-treating the crystal fiber: adding an auxiliary agent into the crystal fiber according to the proportion of 1.5-3%, and performing nutrient infiltration for 24-48 hours to obtain a raw material 1;

step three: mixing the raw material 1 and acrylic fibers by adopting a small sample cotton mixing mode to obtain a mixture, and then sequentially grabbing the mixture by a disc plucker, opening by a mixed cotton opener and carding into strips by a carding machine to obtain a raw material 2;

step four: drawing the raw material 2 to obtain a raw material 3;

step five: performing roving treatment on the raw material 3 to obtain a raw material 4;

step six: carrying out spun yarn treatment on the raw material 4 to obtain a raw material 5;

step seven: performing spooling treatment on the raw material 5 to obtain a raw material 6;

step eight: and (3) carrying out doubling and double-twisting treatment on the raw material 6 to obtain the crystal fiber blended yarn.

2. The method of making a crystalline fiber yarn blend as in claim 1, wherein said adjunct is obtained by:

fully mixing 0.5-1% of electrostatic agent, 0.5-1% of penetrating agent, 1-1.5% of crude oil and 96.5-98% of water, and standing for 30min to obtain the auxiliary agent.

3. The method for preparing the crystal fiber blended yarn as claimed in claim 1, wherein the speed of a disk beater of the disk plucker is 600r/min, the speed of a card needle beater of the mixing and opening machine is 200r/min to 240r/min, and the sliver discharging speed of the carding machine is 50m/min.

4. The method for preparing a crystal fiber blended yarn according to claim 1, wherein the drawing process is performed by a three-pass mixing drawing process, wherein the three-pass mixing drawing process comprises a first pass of feeding 8 raw materials 2 into a drawing frame to prepare a raw material 2a, a second pass of feeding 8 raw materials 2a into the drawing frame to prepare a raw material 2b, and a third pass of feeding 8 raw materials 2b into the drawing frame to prepare a raw material 3.

5. The method for preparing a crystal fiber blended yarn according to claim 1, wherein the roving treatment is to draw the raw material 3 in a roving machine and then twist the drawn raw material to obtain the raw material 4.

6. The method for preparing the crystal fiber blended yarn according to claim 1, wherein the spun yarn is obtained by subjecting the raw material 4 to secondary drawing, increasing the drawing multiple, and then twisting to obtain the raw material 5.

7. The process of claim 1, wherein said spooling is performed by processing a feedstock 5 into bobbins on a winder to provide feedstock 6.

8. The preparation method of the crystal fiber blended yarn according to claim 1, wherein the doubling and double twisting process comprises the steps of putting at least 2 groups of raw materials 6 into a doubling machine for plying, adding the plied raw materials into a double twisting machine for twisting and bonding to form a folded yarn, and obtaining the crystal fiber blended yarn.

9. The method for preparing a crystalline fiber blended yarn according to claim 8, wherein the doubling speed of the doubling machine is 560 to 580 m/min.

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