A marten-like cashmere yarn and a preparation process thereof

Abstract

The present application relates to the technical field of textile manufacturing, in particular to a marten-like plush snow yarn and a preparation process thereof. The marten-like plush snow yarn comprises core yarn, plush yarn and hot melt thread. The core yarn comprises upper core yarn and lower core yarn. The plush yarn comprises plush yarn A and plush yarn B. The plush yarn A is high-shrinkage yarn, and the plush yarn B is low-shrinkage yarn. The preparation process comprises the following steps: introduction of the plush yarn, twisting and looping of the plush yarn, cutting of the plush yarn, forming, heating and bonding, printing and dyeing, and drying. The hot melt temperature, the printing and dyeing temperature and the heating and bonding temperature of the hot melt thread are set, so that the contact area and the acting force between the high-shrinkage yarn and the low-shrinkage yarn and the hot melt thread and the core yarn are enhanced after heating and bonding and printing and dyeing, and the marten-like plush snow yarn has the style of marten-like plush.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of textile manufacturing, in particular to a marten-simulated plush pile yarn and a preparation process thereof. BACKGROUND

[0002] The marten-simulated plush pile yarn is a new type of fancy yarn, which is spun by twining the pile yarn in the middle of the core yarn through twisting.

[0003] The plush fabric spun from the marten-simulated plush pile yarn is usually full of pile, soft to touch, and good in drapability, and can be used in the fields of sofa cover, carpet, wall decoration, and curtain, etc. The plush fancy yarn can be used for knitting sweaters, trousers, scarves, hats, gloves, etc. However, the pile yarn of the marten-simulated plush pile yarn is twined between the two core yarns, and the stability is poor. During use, the pile yarn is easy to fall off, resulting in insufficient durability of the plush textile. SUMMARY

[0004] In order to improve the problem of poor stability of the pile yarn of the existing plush textile, the present application provides a marten-simulated plush pile yarn and a preparation process thereof.

[0005] In the first aspect, the present application provides a marten-simulated plush pile yarn.

[0006] The marten-simulated plush pile yarn is prepared from raw materials, which include, by weight, 25-30 parts of core yarn, 70-80 parts of pile yarn, and 3-5 parts of hot melt thread. The core yarn includes upper core yarn and lower core yarn with a mass ratio of (0.8-1.2):1. The pile yarn includes pile yarn A with a boiling water shrinkage of 25-35% and pile yarn B with a boiling water shrinkage of 3-8%, with a mass ratio of (0.6-1):1.

[0007] By adopting the above technical solution, the pile yarn A and the pile yarn B with different boiling water shrinkages are arranged in the marten-simulated plush pile yarn. The fluffy pile yarn A after shrinkage makes the marten-simulated plush pile yarn warmer. The longer pile yarn B covers the pile yarn A, reducing the heat loss of the pile yarn A, and improving the warmth retention performance of the marten-simulated plush pile yarn.

[0008] The pile yarn A and the pile yarn B after shrinkage become thicker, fluffier, and more curled, increasing the friction between the core yarn and the pile yarn, so that the prepared marten-simulated plush pile yarn has more excellent friction resistance and is warmer.

[0009] Preferably, the core yarn is acrylic thread or polyester thread, the pile yarn A is one of wool yarn, viscose yarn, and acrylic yarn, and the pile yarn B is polyester yarn or aramid yarn.

[0010] By adopting the above technical solution, the pile yarn A and the pile yarn B are preferably selected to make the prepared marten-simulated plush pile yarn have more excellent friction resistance and be warmer.

[0011] Preferably, the pile yarn A is acrylic yarn with a boiling water shrinkage of 30%, and the pile yarn B is hollow polyester yarn with a boiling water shrinkage of 5%.

[0012] By adopting the above technical solution, the acrylic yarn and the hollow polyester yarn are preferred, the longer hollow polyester fiber can have a better synergistic effect with the shorter acrylic fiber, and the hollow polyester fiber can better reduce the heat loss of the acrylic fiber, so that the prepared marten-like pile snow down yarn is warmer.

[0013] Preferably, the mass ratio of the acrylic yarn to the hollow polyester yarn is 0.8:1.

[0014] By adopting the above technical solution, the mass ratio of the acrylic yarn to the hollow polyester yarn is preferred, and the appropriate amount of hollow polyester yarn can well cover the acrylic fiber, reduce the heat loss of the acrylic yarn, and weaken the force acting on the acrylic fiber, so that the prepared marten-like pile snow down yarn has better friction resistance and warmth retention performance.

[0015] In a second aspect, the application provides a preparation process of a marten-like pile snow down yarn, which adopts the following technical solution:

[0016] A preparation process of a marten-like pile snow down yarn, comprising the following preparation steps:

[0017] Introduction of the pile yarn: the pile yarn is fed in the middle of the upper core yarn and the lower core yarn in the weft direction;

[0018] Twisting and looping of the pile yarn: the pile yarn is twisted, and the twisted pile yarn is wound to form a yarn loop;

[0019] Cutting of the pile yarn: the yarn loop is cut into a short feather, the short feather is combined with the lower core yarn and the upper core yarn, and the pile yarn is clamped between the upper core yarn and the lower core yarn to enter the twisting zone;

[0020] Forming: in the twisting zone, the upper core yarn and the lower core yarn are twisted, and the twisted pile yarn is clamped between the upper core yarn and the lower core yarn to prepare a snow down embryo yarn;

[0021] Heating and bonding: the embryo yarn is heated to bond the hot melt line and the pile yarn;

[0022] Printing and dyeing: the snow down embryo yarn after heating and bonding is immersed in a printing and dyeing paste for printing and dyeing;

[0023] Drying: the snow down embryo yarn after printing and dyeing is washed and dried to prepare a marten-like pile snow down yarn;

[0024] The hot melt temperature of the hot melt line is 110-125℃,

[0025] The heating and bonding temperature is 130-140℃, and the printing and dyeing temperature is 100-110℃.

[0026] By adopting the technical scheme, the pile yarns include high-shrinkage yarns and low-shrinkage yarns, the high-shrinkage yarns and the low-shrinkage yarns are bonded on the hot melt thread after being heated and bonded, after printing and dyeing, the high-shrinkage yarns and the low-shrinkage yarns become relatively shorter and thicker yarns, the force and the contact area between the high-shrinkage yarns and the low-shrinkage yarns and the hot melt thread are increased, and then the bonding strength between the hot melt thread and the high-shrinkage yarns and the low-shrinkage yarns is enhanced, so that the marten-simulated pile yarn has excellent friction resistance.

[0027] In the application, the hot melt temperature of the hot melt thread is higher than the temperature of printing and dyeing, so as to reduce the influence of printing and dyeing on the hot melt adhesion.

[0028] Preferably, the printing and dyeing paste includes 1.5-2.5 g / L of disperse dye, 0.3-0.8 g / L of dispersant, 1.0-2.0 g / L of leveling agent, 0.8-1.2 g / L of acetic acid, 0.8-1.2 g / L of microcapsule, 0.1-0.2 g / L of polyvinyl alcohol, and the rest is glycerol and water, wherein the mass ratio of glycerol and water is (0.1-0.3):1.

[0029] The raw materials for preparing the microcapsule include stearic acid substances, higher aliphatic hydrocarbons, tetrabutyl titanate, sodium dodecyl sulfate, deionized water and ethanol.

[0030] The stearic acid substances and higher aliphatic hydrocarbons make the microcapsule have heat storage capacity, and the titanium dioxide network structure generated after the hydrolysis of tetrabutyl titanate wraps the stearic acid substances and higher aliphatic hydrocarbons, so that the microcapsule is stable.

[0031] Through the above technical scheme, the microcapsule is introduced into the pile yarn of the marten-simulated pile yarn during dyeing of the marten-simulated pile yarn, the fibers of the pile yarn after high-temperature shrinkage are more fluffy, so that the microcapsule is more easily entered between the fibers of the pile yarn; the microcapsule entered between the fibers of the pile yarn makes the pile yarn thicker, so that the pile yarn is not easy to fall off from the core yarn, and the marten-simulated pile yarn has excellent friction resistance.

[0032] Preferably, the dispersant is one of polyvinylpyrrolidone, lauryl hydroxyl sulfobetaine and alkylphenol polyoxyethylene ether; and the leveling agent is one of sodium benzyl naphthalene sulfonate, hexadecyl dimethyl tertiary amine, chelating dispersant DT-540 and sodium lignosulfonate.

[0033] Through the above technical scheme, the microcapsule is more easily entered between the fibers of the pile yarn, and the dispersant and the leveling agent are preferably selected, so as to improve the dyeing performance of the marten-simulated pile yarn.

[0034] Preferably, the preparation process of the printing and dyeing paste is as follows:

[0035] Heat the mixture of glycerol and water to 40-50℃, add leveling agent, microcapsules, dispersant, acetic acid and polyvinyl alcohol at a stirring speed of 2000-3000, and stir for 10-20 minutes; then add disperse dye and continue stirring for 20-30 minutes.

[0036] The above technical solutions enable the dye and microcapsules to be dispersed more evenly, allowing the microcapsules to better combine with the imitation mink chenille yarn and giving the dyeing paste a better coloring effect on the imitation mink chenille yarn.

[0037] Preferably, the microcapsule is prepared as follows, wherein the raw materials are in parts by weight:

[0038] A mixture of 2-3 parts stearic acid, 3-5 parts higher aliphatic hydrocarbons, and 5.0-7 parts tetrabutyl titanate is prepared. 0.5-0.7 parts sodium dodecyl sulfate, 70-75 parts deionized water, and 35-40 parts ethanol are added to the mixture. The mixture is stirred for 30-40 minutes at a temperature of 60-70℃ and a stirring speed of 5000-6000 r / min. 0.1-0.3 parts hydrochloric acid are added, and the mixture is stirred at 500-800 r / min for 24-60 hours at 60-70℃. Finally, the mixture is filtered, washed with deionized water, and dried to obtain a white powder.

[0039] The above technical solution is used to prepare microcapsules with heat storage and release properties, thereby making the imitation mink cashmere chenille yarn warmer.

[0040] Preferably, the stearic acid is n-butyl stearate or stearic acid; the higher aliphatic hydrocarbon is one of n-hexadecane, n-octadecane, and n-docosahexadecane.

[0041] Through the above technical solutions, stearic acid and higher aliphatic hydrocarbons are selected to have low thermal conductivity and good lubrication properties, thereby improving the warmth retention of the imitation mink cashmere chenille yarn; after the micro-depression capsule releases stearic acid and higher aliphatic hydrocarbons, the friction resistance of the imitation mink cashmere chenille yarn is further improved.

[0042] In summary, this application has the following beneficial effects:

[0043] 1. A mink-like chenille yarn, the raw materials of which include core yarn, pile yarn and hot-melt yarn, the core yarn including upper core yarn and lower core yarn, the pile yarn including pile yarn A and pile yarn B, pile yarn A being a high-shrinkage yarn and pile yarn B being a low-shrinkage yarn; the preparation process includes: introducing the pile yarn, twisting and looping the pile yarn, cutting the pile yarn, shaping, heating and bonding, printing and dyeing and drying; setting the hot-melt temperature, printing and dyeing temperature and heating and bonding temperature of the hot-melt yarn, so that after the high-shrinkage yarn and low-shrinkage yarn are heated, bonded and printed and dyed, the contact area and force between the pile yarn and the hot-melt yarn and the core yarn are enhanced, so that the mink-like chenille yarn has excellent abrasion resistance.

[0044] 2. By optimizing the types of yarn A and yarn B, the amount of yarn A and yarn B used, and the boiling water shrinkage rate, the abrasion resistance and warmth retention properties of the prepared imitation mink cashmere chenille yarn are further improved.

[0045] 3. Microcapsules are introduced into the pile of the imitation mink cashmere chenille yarn through the dyeing process. After high-temperature shrinkage, the fibers of the pile yarn become more fluffy. The microcapsules enter between the pile yarn fibers, making the pile yarn thicker and thus less likely to fall off from the core yarn, giving the imitation mink cashmere chenille yarn excellent abrasion resistance. The microcapsules also have heat storage and release properties, further improving the warmth retention of the prepared imitation mink cashmere chenille yarn. Detailed Implementation

[0046] Example of preparation of raw materials and / or intermediates: Raw materials: paraffin wax (molecular weight 360-540), hydrochloric acid (mass percentage concentration 37%), polyvinyl alcohol (molecular weight 70,000-80,000, degree of alcoholysis: 86-90%), polyester yarn (16s), acrylic yarn (16s), acrylic yarn (21s), acrylic yarn (21s), viscose yarn (50s), wool yarn (26s), polyester FDY yarn (10s), aramid yarn (fineness: 200D), high-strength PE yarn (fineness: 200D), hollow polyester yarn (21s).

[0047] Preparation Example

[0048] Preparation Example 1

[0049] A microcapsule, using the raw materials shown in Table 1, is prepared as follows:

[0050] Stearic acid, higher aliphatic hydrocarbons, and tetrabutyl titanate were added to a reaction vessel and mixed. Sodium dodecyl sulfate, deionized water, and ethanol were then added to the reaction vessel to form a mixture. The mixture was heated to 60°C and stirred at 6000 r / min for 30 min. Hydrochloric acid was then added, and the reaction was carried out at 60°C and 800 r / min for 24 h. Finally, the mixture was filtered, washed with deionized water, and dried to obtain a white powder.

[0051] Preparation Example 2

[0052] One type of microcapsule differs from Preparation Example 1 in that it uses different types and weights of raw materials and different preparation process parameters, as shown in Table 1.

[0053] Table 1 lists the types and weights of raw materials and the process parameters for preparing microcapsules in Examples 1-5.

[0054]

[0055]

[0056] Preparation Example 6

[0057] A printing and dyeing paste, using the raw materials shown in Table 2, is prepared as follows:

[0058] The mixture of glycerol and water was heated to 40°C, and the leveling agent, microcapsules, dispersant, acetic acid and polyvinyl alcohol were added while stirring at 2000 r / min and stirred for 20 min. Then the disperse dye was added and stirring was continued for 20 min to prepare the printing and dyeing paste.

[0059] Preparation Examples 7-11

[0060] The difference between this dyeing paste and Preparation Example 6 is that the types and weights of the raw materials used are different, and the preparation process parameters are also different, as shown in Table 2.

[0061] Table 2 lists the types and weights of raw materials and the process parameters for preparing the dyeing paste in Examples 6-11.

[0062]

[0063]

[0064] Preparation Example 12

[0065] A dyeing paste, which differs from Preparation Example 6 in that it does not use microcapsules and polyvinyl alcohol.

[0066] Preparation Example 13

[0067] A dyeing paste, which differs from Preparation Example 6 in that it does not use polyvinyl alcohol.

[0068] Preparation Example 14

[0069] A dyeing paste differs from Preparation Example 6 in that its preparation process is different. The preparation process is as follows: After heating a mixture of glycerol and water to 40°C, a leveling agent, microcapsules, dispersant, acetic acid, polyvinyl alcohol and disperse dye are added at a stirring speed of 2000 r / min. Then, the mixture is stirred for 40 min to prepare the dyeing paste.

[0070] Example

[0071] Example 1

[0072] A type of imitation mink cashmere chenille yarn, using the raw materials shown in Table 3, is prepared using the following steps:

[0073] Introduction of pile yarn: The upper core yarn and the lower core yarn are separated by a preset distance in the warp direction. Under the action of the traction roller, they are unwound from the bobbin and fed into the guide roller together; the pile yarn is fed in the weft direction between the upper core yarn and the lower core yarn.

[0074] The twisting and looping of the pile yarn: The pile yarn consists of three single yarns. The single yarns are unwound from the bobbin and twisted as the rotary head rotates at high speed. The twisted pile yarn is wound on the spacer to form a loop.

[0075] Cutting of the pile yarn: The yarn loop slides down as the roller plate rotates, and is cut into short feathers when it encounters the blade. The short feathers and the lower core yarn are fed into the control roller together, where they meet the upper core yarn and the hot melt line. The pile yarn is sandwiched between the upper core yarn, the hot melt line and the lower core yarn, and then enters the twisting zone, where the melting point of the hot melt line is 115℃.

[0076] In the forming process, the core yarn is rapidly twisted as the spindle rotates at high speed in the twisting zone. The twisted core yarn is then hinged with the feather yarn to prepare chenille yarn. The twist of the yarn is 360±10 twists / 10cm.

[0077] Heat bonding: Heat the raw yarn to bond the hot melt yarn to the pile yarn. The heat bonding conditions are 130℃ for 10 minutes.

[0078] For printing and dyeing, the chenille pre-thread and the printing and dyeing paste of Preparation Example 6 are mixed and then printed and dyed.

[0079] Drying: After dyeing and printing, the yarn is prepared by washing and drying to obtain imitation mink cashmere chenille yarn.

[0080] The dyeing process is as follows:

[0081] The prepared chenille pre-thread was immersed in dyeing paste at a liquor ratio of 1:10 and dyed using a high-temperature and high-pressure overflow dyeing machine. The dyeing process consisted of three stages: ① Pre-dyeing stage at 48℃; ② Dyeing stage: after the pre-dyeing stage, the temperature was increased to 110℃ at a rate of 1.5℃ / min and held for 45min; ③ Reduction and cleaning: after the dyeing stage, the temperature was reduced to 70℃ at a rate of 2℃ / min and reduced and cleaned for 20min.

[0082] During the reduction and cleaning stage, the imitation mink chenille yarn is cleaned with a cleaning agent, which is an aqueous solution of sodium hydroxide 1.2g / L and sodium hydrosulfite 3g / L.

[0083] Examples 2-6

[0084] A type of imitation mink cashmere chenille yarn differs from Example 1 in that it has different raw material types and weight settings, as well as different printing and dyeing temperatures and heating and bonding temperatures, as shown in Table 3.

[0085] Table 3 lists the raw material types and weights, dyeing temperatures, and heat bonding temperature settings for the imitation mink cashmere chenille yarns in Examples 1-6.

[0086]

[0087]

[0088] Examples 7-9

[0089] A chenille yarn imitating mink cashmere differs from Example 1 in that the dyeing paste used is sequentially the dyeing paste of Preparation Examples 12-14.

[0090] Example 10

[0091] A type of imitation mink cashmere chenille yarn differs from Example 1 in that yarn A is made of acrylic yarn with a boiling water shrinkage rate of 30%, while yarn B is made of hollow polyester yarn with a boiling water shrinkage rate of 5%.

[0092] Example 11

[0093] A chenille yarn imitating mink cashmere differs from Example 11 in that the mass ratio of acrylic yarn to hollow polyester yarn is 0.8:1.

[0094] Example 12

[0095] A type of imitation mink cashmere chenille yarn differs from Example 1 in that yarn A is made of polyester yarn with a boiling water shrinkage rate of 25%, while yarn B is made of acrylic yarn with a boiling water shrinkage rate of 8%.

[0096] Example 13

[0097] A type of imitation mink cashmere chenille yarn differs from Example 1 in that it uses a steaming step instead of a heating, bonding, and dyeing step. The steaming process is carried out at a temperature of 60±5℃ for 2 hours.

[0098] Example 14

[0099] A type of imitation mink cashmere chenille yarn differs from Example 1 in that the hot-melt temperature of the hot-melt yarn is set to 95°C, the dyeing temperature is set to 120°C, and the heating and bonding temperature is set to 120°C.

[0100] Comparative Example

[0101] Comparative Example 1

[0102] A type of imitation mink chenille yarn differs from Example 6 in that an equal amount of yarn B is used instead of yarn A.

[0103] Comparative Example 2

[0104] A type of imitation mink chenille yarn differs from Example 6 in that an equal amount of yarn B is used instead of yarn A, and heat-fused yarn is not used.

[0105] Comparative Example 3

[0106] A type of imitation mink chenille yarn differs from Example 6 in that an equal amount of yarn A is used instead of yarn B.

[0107] Comparative Example 4

[0108] A type of imitation mink chenille yarn differs from Example 6 in that yarn A is made of acrylic yarn with a boiling water shrinkage rate of 40%, and yarn B is made of polyester yarn with a boiling water shrinkage rate of 2%. The mass ratio of yarn A to yarn B is 0.3:1.

[0109] Performance testing

[0110] Experiment 1: Hair Removal Rate Test Method: A YG522N fabric abrasion tester was used for testing. Chenille fabric was cut into 125mm diameter circular pieces as test samples, with a hole in the middle of the sample. Three samples were set up for the test, and the average value of the test results was taken. The hair removal rate test was carried out under standard atmospheric conditions using the rotary abrasion method. The sample was rubbed 500 times, and then the hair removal rate of the test fabric was calculated according to the formula: hair removal rate = (mass before friction - mass after friction) / mass before friction × 100%.

[0111] Test 2: Heat transfer coefficient test method: The test shall be conducted in accordance with GB / T35762-2017 "Test method for heat transfer properties of textiles - plate method".

[0112] Test samples: Chenille fabrics woven from the imitation mink cashmere chenille yarns of Examples 1-14 were used as test samples, and chenille fabrics woven from the imitation mink cashmere chenille yarns of Comparative Examples 1-4 were used as control samples. The chenille fabrics were 2 / 2 right twill weave with a density of 445 threads / 10cm × 244 threads / 10cm.

[0113] Test results: The shedding rate and heat transfer coefficient of the chenille fabrics woven from the imitation mink cashmere chenille yarns of Examples 1-14 and Comparative Examples 1-4 are shown in Table 4.

[0114] Table 4 lists the test results of the shedding rate and heat transfer coefficient of chenille fabrics woven from the imitation mink chenille yarns of Examples 1-14 and Comparative Examples 1-4.

[0115] Distinguishing Depilation rate / % Heat transfer coefficient (W / (m 2 • K)) Example 1 0.63 11.8 Example 2 0.61 10.8 Example 3 0.62 11.3 Example 4 0.67 12.3 Example 5 0.68 12.8 Example 6 0.98 13.8 Example 7 1.13 14.9 Example 8 0.90 13.4 Example 9 0.83 12.5 Example 10 0.60 10.5 Example 11 0.58 10 Example 12 0.78 13.3 Example 13 0.76 11.8 Example 14 0.88 12.3 Comparative Example 1 1.22 16.8 Comparative Example 2 2.3 20 Comparative Example 3 1.42 14.5 Comparative Example 4 1.18 15.5

[0116] Combining Examples 1-14 and Comparative Examples 1-4 with Table 4, it can be seen that:

[0117] The shedding rate (0.58-1.13%) and heat transfer coefficient (10-14.9 W / (m²)) of the chenille fabrics in Examples 1-14 2 The lint rate (1.18-2.3%) and heat transfer coefficient (14.5-20 W / (m²)) of the chenille fabrics obtained from comparative examples 1-4 were significantly lower than those obtained from comparative examples 1-4. 2 The results show that by incorporating high-shrinkage and low-shrinkage yarns into the imitation mink chenille yarn, and by setting the hot-melt temperature of the hot-melt thread, the dyeing temperature, and the heating and bonding temperature, the contact area and force between the hot-melt thread and the yarn are increased after the high-shrinkage and low-shrinkage yarns are heated, bonded, and dyed. This results in the imitation mink chenille yarn having excellent abrasion resistance and warmth retention. Furthermore, by introducing microcapsules into the imitation mink chenille yarn through the dyeing process, the microcapsules penetrate between the yarn fibers, making the yarn thicker and less prone to falling off from the core yarn. This results in the prepared imitation mink chenille yarn having excellent abrasion resistance. The microcapsules also have heat storage and release properties, further enhancing the warmth retention of the prepared imitation mink chenille yarn. Finally, by optimizing the type, amount, and boiling water shrinkage rate of yarns A and B, the abrasion resistance and warmth retention of the prepared imitation mink chenille yarn are further improved.

[0118] Compared with Examples 6-8, Examples 1-5 and 9-13 showed lower hair removal rates and heat transfer coefficients than Examples 6-8. This indicates that introducing microcapsules into the imitation mink chenille yarn enhanced its abrasion resistance and warmth retention. Furthermore, the combination of microcapsules and polyvinyl alcohol further improved the abrasion resistance and warmth retention of the imitation mink chenille yarn. This may be because polyvinyl alcohol increases the number of microcapsules in the chenille fabric, enhancing the bonding force between the microcapsules and the yarn. On the other hand, the combination of polyvinyl alcohol with dispersants and leveling agents makes the yarn fluffier and denser, thereby enhancing the abrasion resistance and warmth retention of the imitation mink chenille yarn.

[0119] Compared with the experimental results of Examples 10-12, Examples 1-6 and Comparative Examples 1-4, it is shown that the preferred types of yarn A and yarn B, the amount of yarn A and yarn B used, and the boiling water shrinkage rate further improve the abrasion resistance and warmth retention of the imitation mink cashmere chenille yarn.

[0120] Compared with the experimental results of Example 1, Examples 13-14 show that, compared with the traditional steaming process, the heat bonding and dyeing processes of the pile yarn, core yarn, and hot melt yarn in this application enhance the bonding force between the pile yarn, core yarn, and hot melt yarn. Furthermore, the optimization of the hot melt temperature, dyeing temperature, and heat bonding temperature of the hot melt yarn further improves the bonding force between the pile yarn, core yarn, and hot melt yarn, resulting in the prepared imitation mink cashmere chenille yarn and fabric having excellent abrasion resistance.

[0121] This specific embodiment is merely an explanation of this application and is not intended to limit it. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they fall within the scope of the claims of this application.

Claims

1. A process for preparing imitation mink cashmere chenille yarn, characterized in that, The raw materials for the imitation mink cashmere chenille yarn, by weight, include 25-30 parts core yarn, 70-80 parts pile yarn, and 3-5 parts hot-melt yarn; the core yarn includes an upper core yarn and a lower core yarn with a mass ratio of (0.8-1.2):1; the pile yarn includes pile yarn A with a boiling water shrinkage rate of 25-35% and pile yarn B with a boiling water shrinkage rate of 3-8% with a mass ratio of (0.6-1):1; the core yarn is acrylic yarn or polyester yarn; pile yarn A is one of wool yarn, nylon, viscose yarn, and acrylic yarn; and pile yarn B is one of hollow polyester yarn, polyester FDY, and aramid yarn. The preparation process includes the following steps: Introduction of pile yarn: feed the pile yarn weft direction into the middle of the upper core yarn and the lower core yarn; Twisting and looping of yarn: The yarn is twisted and then wound to form loops. Cutting of the pile yarn: The yarn loops are cut into short feathers, which are then combined with the lower core yarn, upper core yarn, and hot melt yarn. The pile yarn is sandwiched between the upper core yarn and the lower core yarn and enters the twisting zone. Forming: In the twisting zone, the upper core yarn and the lower core yarn are twisted, and the twisted pile yarn is sandwiched between the upper core yarn and the lower core yarn to prepare chenille yarn; Heat bonding: The raw yarn is heated to bond the heat-melting yarn to the pile yarn; Printing and dyeing: The heated and bonded chenille yarn is immersed in printing and dyeing paste for printing and dyeing; Drying: The dyed chenille yarn is washed and dried to prepare imitation mink cashmere chenille yarn; The hot melt temperature of the hot melt wire is 110-125℃, the heating and bonding temperature is 130-140℃, and the printing and dyeing temperature is 100-110℃; The printing and dyeing paste comprises 1.5-2.5 parts disperse dye, 0.3-0.8 parts dispersant, 1.0-2.0 parts leveling agent, 0.8-1.2 parts acetic acid, 1-3 parts microcapsules, 0.1-0.2 parts polyvinyl alcohol, and 800-1000 parts of a mixture of glycerol and water, wherein the mass ratio of glycerol to water is (0.1-0.3):1; the raw materials for preparing the microcapsules include stearic acid substances, higher aliphatic hydrocarbons, tetrabutyl titanate, sodium dodecyl sulfate, deionized water, and ethanol.

2. The preparation process of the imitation mink cashmere chenille yarn according to claim 1, characterized in that: The yarn A is an acrylic yarn with a boiling water shrinkage rate of 30%, and the yarn B is a hollow polyester yarn with a boiling water shrinkage rate of 5%.

3. The preparation process of the imitation mink cashmere chenille yarn according to claim 2, characterized in that: The mass ratio of acrylic yarn to hollow polyester yarn is 0.8:

1.

4. The preparation process of the imitation mink cashmere chenille yarn according to claim 1, characterized in that: The dispersant is one of polyvinylpyrrolidone, lauryl hydroxysulfonate betaine, and alkylphenol polyoxyethylene ether; the leveling agent is one of sodium benzyl naphthalene sulfonate, hexadecyl dimethyl tertiary amine, chelating dispersant DT-540, and sodium lignosulfonate.

5. The preparation process of the imitation mink cashmere chenille yarn according to claim 1, characterized in that: The preparation process of the printing and dyeing paste is as follows: heat the mixture of glycerol and water to 40-50℃, add leveling agent, microcapsules, dispersant, acetic acid and polyvinyl alcohol at a stirring speed of 2000-3000r / min and stir for 10-20min; then add disperse dye and continue stirring for 20-30min.

6. The preparation process of the imitation mink cashmere chenille yarn according to claim 1, characterized in that: The preparation process of the microcapsules is as follows, wherein the raw materials are in parts by weight: 2-3 parts of stearic acid, 3-5 parts of higher aliphatic hydrocarbons, and 5-7 parts of tetrabutyl titanate are mixed and then 0.5-0.7 parts of sodium dodecyl sulfate, 70-75 parts of deionized water and 35-40 parts of ethanol are added to form a mixture. The mixture is heated to 60-70℃ and stirred for 30-40 minutes at a stirring speed of 5000-6000 r / min. Add 0.1-0.3 parts of hydrochloric acid and react at a reaction temperature of 60-70℃ and a stirring speed of 500-800 r / min for 24-60 h. Finally, filter, wash with deionized water and dry to obtain a white powder.

7. The preparation process of the imitation mink cashmere chenille yarn according to claim 6, characterized in that: The stearic acid is n-butyl stearate or stearic acid; the higher aliphatic hydrocarbon is one of n-hexadecane, n-octadecane, and n-docosahexadecane.

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