Method for manufacturing velboa warp knitted fabric using cellulosic spun yarn and its velboa warp knitted fabric

Abstract

The present invention relates to a method for manufacturing a velboa warp-knitted fabric using cellulose-based spun yarn and the velboa warp-knitted fabric, wherein the velboa warp-knitted fabric is manufactured by using a sheath-core type spun yarn produced by the MVS method to improve tensile strength and fluffiness suitable for warp knitting, with a cellulose-based fiber, which is a natural fiber, as the sheath yarn and recycled PET as the core yarn, and using the pile yarn; wherein the MVS spun yarn having a fineness of 40 or 50, with tensile strength and fluffiness improved by the MVS method, is manufactured by using a cellulose-based fiber as the sheath yarn and recycled PET as the core yarn; a warp-knitted fabric weaving step in which the spun yarn is pretreated and then warp-knitted using a warp-knitting machine to prepare a warp-knitted fabric; and a surface processing step for forming a front surface nap of the warp-knitted fabric. A method for manufacturing a velboa warp-knitted fabric using cellulose-based spun yarn, comprising a back processing step of dry setting and heat treatment to form back nap after the completion of the above-mentioned surface processing step, and a velboa warp-knitted fabric manufactured by the same are disclosed.

Description

Technology Field

[0001] The present invention relates to a method for manufacturing a velboa warp-knitted fabric using cellulose-based spun yarn, wherein a cellulose-based fiber, which is a natural fiber, is used as the sheath yarn and recycled PET is used as the core yarn, and a sheath-core type spun yarn manufactured by the MVS method to improve the tensile strength and fluffiness suitable for warp knitting is used as the pile yarn to manufacture the velboa warp-knitted fabric, and the velboa warp-knitted fabric. Background Technology

[0003] The space that has undergone the biggest changes since COVID-19 is the 'home,' and as this has become established over time, interest in the home environment is rising along with the culture of work-life balance.

[0004] Just as predictions suggest that changes in the future consumer industry will begin at home, and with the emergence of the "peace of mind" trend where consumers are willing to pay high prices for quality and safety, the scale of investment in home environments that generate new energy is also growing.

[0005] In line with this trend, the growth rate of total living stores, which encompass the entire range of products including bedding, bathroom supplies, and pet products, is surging.

[0006] As awareness of the environmental crisis rises globally, changes in national policies and proactive changes by consumers are taking place simultaneously.

[0007] As a social consensus on environmental protection has formed in this way, we have entered an era of essential environmentalism, moving beyond mere eco-friendliness.

[0008] Heimtextil, a global home textile exhibition, also emphasized a lifestyle closer to the natural environment under the theme 'Toward Utopia' for 2019 / 2020. In particular, given that modern diseases are caused by artificial rather than natural factors and that synthetic materials are cited as the main culprits behind various allergies, the exhibition significantly reinforced the application of eco-friendly materials, emphasizing that materials closest to the human body are those closest to nature.

[0009] As such, beyond eco-friendliness, "essential eco-friendliness" is now establishing itself as a trend, encompassing not only the use of naturally derived materials but also the minimization of environmental pollution through eco-friendly manufacturing methods and the upcycling of waste products.

[0010] Velboa is a total home textile material characterized by a sturdy base and a soft touch of pile, featuring a cozy feel and excellent thermal insulation. However, eco-friendly materials are unsuitable for velboa, which is a warp-knitted product.

[0011] Eco-friendly yarns are unsuitable for the wrapping and knitting processes, which are essential steps in warp-knitted velboa, because they have weak tensile strength in the form of spun yarns and contain more fibers compared to filaments.

[0012] Warp knitting involves warping the yarn as is, which results in high tension; in the case of spun yarn made by twisting staple fibers, it is disadvantageous because its tensile strength is weaker compared to filaments. Additionally, since warping accounts for 90% of knitting quality, yarns warped with a high crystal density affect the knitting process and cause problems such as yarn breakage.

[0013] Therefore, Velboa has historically faced limitations as it has been developed solely to enhance handfeel using synthetic fibers (filaments). In other words, the most critical element of a pile fabric is its touch—its tactile feel. This is a sensory experience derived from touching the fabric; while difficult to quantify, it is a vital factor in determining the fabric's value. Generally, no matter how technically superior a fabric may be, poor tactile feel is fatal. Synthetic fibers have limitations in expressing a natural touch or softness and suffer from the inconvenience of static electricity.

[0014] Velboa has evolved by gradually making the fibers finer based on synthetic fibers, from SD (Semi-dull) → DTY (Draw Textured Yarn) → 1de → microfiber to create a soft pile, but it is true that there are limits to further improving the touch sensation. Prior art literature

[0016] Republic of Korea Published Patent Application No. 10-2011-0035289 Republic of Korea Published Patent Application No. 10-2018-0054258 Republic of Korea Registered Patent Application No. 10-2677068 Republic of Korea Registered Utility Model Application No. 20-0378068 Republic of Korea Published Patent Application No. 10-2017-0108471 Republic of Korea Published Patent Application No. 10-2015-0041264 The problem to be solved

[0017] The present invention was devised to resolve the problems associated with the application of natural materials in the aforementioned conventional velboa warp-knitted fabrics. More specifically, the invention provides a method for manufacturing a velboa warp-knitted fabric using cellulose-based spun yarn, which applies a cellulose-based yarn to the sheath and regenerated PET to the core to manufacture a spun yarn using the MVS method to improve tensile strength and fluffiness suitable for warp knitting, and uses the spun yarn as a pile yarn to apply to the pile portion (3mm, 5mm) of the velboa fabric to maximize the user's natural handfeel, and provides an all-in-one velboa material that can be applied to all product lines, and provides a velboa warp-knitted fabric manufactured according to the above manufacturing method. means of solving the problem

[0019] A method for manufacturing a velboa warp-knitted fabric using a cellulose-based spun yarn according to the present invention, which solves the above-mentioned problem, comprises: a yarn preparation step of manufacturing an MVS spun yarn having a fineness of 40 or 50, in which tensile strength and fluffiness are improved by the MVS method using a cellulose-based fiber as the sheath yarn and recycled PET as the core yarn;

[0020] A warp knitting weaving step in which, after pre-treating the above-mentioned spun yarn, a warp knitting machine is used to warp knit under the following knitting conditions to prepare a warp knitted fabric;

[0021] [Reorganization Conditions]

[0022] <5MM VELBOA Knitting Conditions>

[0023] 800 RPM

[0024] L1 P / F 50 / 24 SD Tissue 23 10 Span 1900 585 strands 8 beams used - Recycle PET

[0025] L2 P / F 50 / 24 SD Tissue 10 12 Board 1550 585 strands 8 beams used - Recycle PET

[0026] L3 Tencel spun yarn, using 40 or 50 count, weave 10 1112, 5950, 583 strands, using 8 beams - MVS spun yarn

[0027] 84" X 690 G / YD Density 17.5 C / CM

[0028] Set guide clamp to 1mm, sinker position to 1.6, and lower tongue height by 1 angle.

[0029] The fabric is rolled vertically and neatly, and stacked in a # shape to prevent compression during stacking, and a double body is installed to prevent edge shaking.

[0030] <3MM VELVOA Re-knitting Conditions>

[0031] 1100 RPM

[0032] L1 P / F 50 / 24 SD Tissue 23 10 Stencil 1900 585 specimens 8-beam usage - Recycled PET

[0033] L2 P / F 50 / 24 SD Tissue 10 12 Stencil 1600 585 specimens 8-beam usage - Recycled PET

[0034] L3 Tencel spun yarn, 40 count or 50 count used, weave 10 78, 4230 583 strands, 8-beam usage - MVS spun yarn

[0035] 84” X 435 G / YD Density 14.3 C / CM

[0036] Set guide clamp to 1mm, sinker position to 1.6, and lower tongue height by 1 angle.

[0037] The fabric is rolled vertically and neatly, and stacked in a # shape to prevent compression during stacking, and a double body is installed to prevent edge shaking.

[0038] A surface processing step for forming the front surface nap of the above-mentioned warp knitted fabric;

[0039] After the above surface processing step is completed, the process includes a back processing step in which heat treatment is performed after dry setting to form back nap.

[0041] Here, the spun yarn comprises 60 to 70 parts by weight of cellulose fiber and 30 to 40 parts by weight of regenerated PET, has physical properties of yarn strength of 10 to 13 cN / tex, elongation of 6 to 9%, and uniformity of 13 to 10 U%, and is characterized in that the cellulose fiber is Modal or Tencel.

[0042] Here, the warp knitting stage consists of the processes of warping, sizing, drawing-in, and knitting of the spun yarn, wherein the warping process is performed under conditions of RPM 100~250, tension 17~25G / tweeter, and hardness 50~60, and the knitting is characterized by being performed under conditions of deep setting with guide grip 1MM and SINKER position 1.6, and TONGUE height -1 angle downward.

[0043] Here, the surface processing step comprises: a dry setting step of heat-setting the prepared warp-knitted fabric at a temperature of 80 to 100°C and a heat treatment processing speed of 12 m / min to 13 m / min; a step of forming a primary long pile nap on the front surface of the warp-knitted fabric after the heat treatment setting is completed; a processing step of completing the formation of the nap pile through a shearing process of cutting to a length of 3 to 5 mm after a polishing process at a temperature of 120°C to 140°C to improve the napping ability of the long pile yarn forming the primary long pile nap; and a dyeing step of performing a dyeing process under the following dyeing conditions after forming the nap.

[0044] [Dyeing Conditions]

[0045] 1 bath 2-stage dyeing

[0046] Ground back staining: 4 types of disperse dyes (130℃ x 40 min. + R / C) after

[0047] Pile Napping (3mm Modal, 5mm Tencel) Dyeing - 4 Types of Reactive Dyes (80℃ x 30 min.)

[0049] Here, the back surface processing step comprises: a heat treatment setting step in which, after the dyeing process is completed in the surface processing step, the dyed warp-knitted fabric is washed and then subjected to a second heat treatment process under conditions of a temperature of 80–100℃ and a heat treatment processing speed of 16 m / min–17 m / min; a step of forming a second long-pile nap on the back surface after the heat treatment setting is completed; a napping processing step in which a polishing and shearing process is continuously performed to form a nap by cutting the long-pile nap to a length of 3 to 5 mm; and a step of performing a washing process in a dye speed tumbler under conditions of a temperature of 150–160℃ and a fabric transfer speed of 18–20 m / min after the napping processing step is completed; After the washing process step is completed, the brushed fabric is characterized by including a tentering step in which the width is processed in a tenter to satisfy a fabric width of 60 to 70 inches and a fabric unit weight of 380 ± 25 g / yd to 420 ± 25 g / yd.

[0050] The present invention also provides a velboa warp-knitted fabric manufactured by the above manufacturing method, having nap of 3 to 5 mm formed on both sides. Effects of the invention

[0052] The method for manufacturing a velboa warp-knitted fabric using cellulose-based spun yarn provided according to the present invention has the following expected effects.

[0053] [Expected Effects]

[0054] 1) Scientific and technological aspects

[0055] A technological advantage can be secured by providing spun yarn suitable for warp-knitted fabrics using cellulose-based fibers and establishing warp-knitting technology using such spun yarn.

[0056] - Replacing synthetic-based warp-knitted products through the development of natural-feeling warp-knitted products using differentiated spinning technology

[0057] - Expansion into various fields, ranging from household foam textiles to clothing materials

[0058] It is possible to incorporate natural fibers into warp-knitted products, which were previously only possible with synthetic fibers (filaments).

[0059] - New product creation effect, product diversification

[0060] Increased design utilization through the establishment of technology to incorporate various designs with new fabrics

[0061] 2) Industrial and social aspects

[0062] Development of natural material-based products tailored to modern consumer needs

[0063] - Mass production enabled through production stabilization, securing the market with price and quality advantages

[0064] Diverse product development possible through the development of new materials that break away from the staleness of existing products.

[0065] - Meeting consumer needs through the shift from traditional woven and circular knitted fabrics to warp knitted fabrics

[0066] As a representative item of conscious fashion, interest in body-friendly materials is expected to continue for several years, forming a social consensus.

[0067] - Natural-feeling materials are expected to be applied in various ways, including high-end clothing materials and household goods.

[0068] The successful development of this invention secures proprietary technological capabilities and enables high profit generation through the presentation of reasonably priced products, thereby creating social value.

[0069] - Industrial advancement, creation of high-quality jobs, increase in workforce, etc.

[0070] - High profit generation and job creation possible due to the continuous growth of the market driven by emotional appeal Brief explanation of the drawing

[0072] FIG. 1 is a process diagram illustrating an example of a method for manufacturing a velboa warp-knitted fabric using cellulose-based spun yarn according to the present invention. FIG. 2 is a photograph of a 132De, 40-count spun yarn bobbin test-produced for testing according to the present invention. Specific details for implementing the invention

[0073] The present invention will be described in more detail below.

[0074] The present invention aims to provide a method for manufacturing a velboa warp-knitted fabric using cellulose-based spun yarn, wherein the velboa warp-knitted fabric is manufactured by using a sheath-core type spun yarn produced by the MVS method to improve the tensile strength and fluffiness of the cellulose-based fiber suitable for warp knitting, with a natural cellulose-based fiber as the sheath yarn and recycled PET as the core yarn, and using the pile yarn.

[0075] A method for manufacturing a velboa warp-knitted fabric using cellulose-based spun yarn according to the present invention, which achieves the above objective, will be explained in more detail with reference to FIG. 1.

[0076] A method for manufacturing a velboa warp-knitted fabric using a cellulose-based spun yarn according to the present invention comprises: a yarn preparation step of manufacturing an MVS spun yarn having a fineness of 40 or 50, in which tensile strength and fluffiness are improved using the MVS method, by using a cellulose-based fiber as the sheath yarn and recycled PET as the core yarn;

[0077] A warp knitting weaving step in which, after pre-treating the above-mentioned spun yarn, a warp knitting machine is used to warp knit under the following knitting conditions to prepare a warp knitted fabric;

[0078] [Reorganization Conditions]

[0079] <5MM VELBOA Knitting Conditions>

[0080] 800 RPM

[0081] L1 P / F 50 / 24 SD Tissue 23 10 Span 1900 585 strands 8 beams used - Recycle PET

[0082] L2 P / F 50 / 24 SD Tissue 10 12 Board 1550 585 strands 8 beams used - Recycle PET

[0083] L3 Tencel spun yarn, using 40 or 50 count, weave 10 1112, 5950, 583 strands, using 8 beams - MVS spun yarn

[0084] 84" X 690 G / YD Density 17.5 C / CM

[0085] Set guide clamp to 1mm, sinker position to 1.6, and lower tongue height by 1 angle.

[0086] The fabric is rolled vertically and neatly, and stacked in a # shape to prevent compression during stacking, and a double body is installed to prevent edge shaking.

[0087] <3MM VELVOA Re-knitting Conditions>

[0088] 1100 RPM

[0089] L1 P / F 50 / 24 SD Tissue 23 10 Stencil 1900 585 specimens 8-beam usage - Recycled PET

[0090] L2 P / F 50 / 24 SD Tissue 10 12 Stencil 1600 585 specimens 8-beam usage - Recycled PET

[0091] L3 Tencel spun yarn, 40 count or 50 count used, weave 10 78, 4230 583 strands, 8-beam usage - MVS spun yarn

[0092] 84” X 435 G / YD Density 14.3 C / CM

[0093] Set guide clamp to 1mm, sinker position to 1.6, and lower tongue height by 1 angle.

[0094] The fabric is rolled vertically and neatly, and stacked in a # shape to prevent compression during loading, and a double body is installed to prevent edge shaking.

[0095] A surface processing step for forming the front surface nap of the above-mentioned warp knitted fabric;

[0096] After the above surface processing step is completed, the process includes a back processing step in which heat treatment is performed after dry setting to form back nap.

[0098] At this time, the spun yarn is manufactured by using recycled PET yarn having a fineness of 50d / 24f and using Modal or Tencel with a fineness of 60 count for the cellulose-based fiber, and covering the recycled PET yarn with the cellulose-based fiber using the cellulose-based fiber as the sheath and the recycled PET yarn as the core to produce a spun yarn with a fineness of 40 to 50 count.

[0099] According to the present invention, the spun yarn comprises 60 to 70 parts by weight of cellulose fiber and 30 to 40 parts by weight of regenerated PET, has physical properties of yarn strength of 10 to 13 cN / tex, elongation of 6 to 9%, and uniformity of 13 to 10 U%, and the cellulose fiber is Modal or Tencel.

[0101] According to the present invention, the warp knitting step comprises the processes of warping, sizing, drawing-in, and knitting of the spun yarn, wherein the warping process is performed under conditions of RPM 100~250, tension 17~25G / tweeter, and hardness 50~60, and the knitting is performed under conditions of deep setting with guide gripping 1MM and SINKER position 1.6, and lowering the TONGUE height by -1 angle.

[0102] The above warping process is performed at an RPM between 100 and 250, with significant RPM fluctuations due to mowing or cutting (RPM decreases with more mowing or cutting, and increases with less). The tension is 17–25G / bone, varying according to the denier difference. Frequent cleaning is required due to dust generation.

[0103] In addition, the hardness is set to approximately 50-60 to ensure smooth unwinding. (If the hardness is too high or too low, unwinding becomes difficult. A phenomenon occurs where the material digs inward and does not come out (leading to breakage).)

[0104] In the aforementioned knitting process, production volume varies significantly depending on the warping conditions. Production volume increases when there is less fuzzyness and fewer broken yarns. Frequent malfunctions occur due to dust generation in the knitting elements, causing the RPM to be reduced to one-third compared to standard knitting. Since the denier is thicker and there is more fuzzyness compared to standard knitting, the guide clamping is made deeper (1mm deep clamping).

[0105] The SINKER position is set deeper from the existing 1.0 to 1.6, and the TONGUE clamp is lowered by -1 angle.

[0106] According to the present invention, the technical features of the invention include: a dry setting step in which the prepared warp-knitted fabric is heat-treated and set at a temperature of 80 to 100°C and a heat treatment processing speed of 12 m / min to 13 m / min; a step of forming a primary long pile nap on the front surface of the warp-knitted fabric after the heat treatment setting is completed; a processing step in which the formation of the nap pile is completed through a shearing process in which the long pile yarn forming the primary long pile nap is cut to a length of 3 to 5 mm after a polishing process at a temperature of 120°C to 140°C to improve napping ability; and a dyeing step in which a dyeing process is performed under the following dyeing conditions after forming the nap.

[0107] [Dyeing Conditions]

[0108] 1 bath 2-stage dyeing

[0109] Ground back staining: 4 types of disperse dyes (130℃ x 40 min. + R / C) after

[0110] Pile Napping (3mm Modal, 5mm Tencel) Dyeing - 4 Types of Reactive Dyes (80℃ x 30 min.)

[0112] According to the present invention, the back surface processing step comprises: a heat treatment setting step in which a dyed warp-knitted fabric is washed after the dyeing process is completed in the surface processing step, and then a second heat treatment process is performed under conditions of a temperature of 80 to 100°C and a heat treatment processing speed of 16 m / min to 17 m / min; a step of forming a second long-pile nap on the back surface after the heat treatment setting is completed; a napping processing step in which a nap is formed by continuously performing a polishing and shearing process to form a nap through a polishing process at a temperature of 120°C to 140°C, followed by a shearing process in which the long-pile nap is cut to a length of 3 to 5 mm to improve the napping properties of the long-pile yarn forming the long-pile nap; and a washing process in a dyeing speed tumbler under conditions of a temperature of 150 to 160°C and a fabric transfer speed of 18 to 20 m / min after the napping processing step is completed. The technical feature of the above method is that, after the completion of the washing process step, the brushed fabric is processed in a tenter to satisfy a fabric width of 60 to 70 inches and a fabric unit weight of 380 ± 25 g / yd to 420 ± 25 g / yd.

[0114] According to the above manufacturing method, the method for manufacturing a velboa warp-knitted fabric using cellulose-based spun yarn provided in the present invention can provide a velboa warp-knitted fabric having nap of 3 to 5 mm formed on both sides.

[0115] The test process performed to complete the present invention is described in more detail below. The various process conditions and other details of the test process described below are provided as preferred examples for explaining the present invention and do not limit the present invention to the various data obtained from the test process below. Rather, it should be interpreted that a person skilled in the art can make any modifications within the scope of the technical scope of the invention as described in the claims.

[0116] [Preparation of spun yarn]

[0117] We prepared recycled PET yarn with a fineness of 50d / 24f and 60-count modal.

[0118] The above recycled PET yarn was used as the core yarn, and the above modal was used as the sheath yarn, and the outside of the above recycled PET yarn was covered with the above modal to process the spun yarn.

[0119] As shown in Fig. 2, the above-mentioned spun yarn was prepared in a coiled and wound state, and the produced spun yarn was processed to have a fineness of 40 count.

[0120] The appearance and physical properties of the above-processed 40-count spun yarn were tested, and the results are shown in Tables 1 to 3 below.

[0121] Table 1 below is a photograph of the appearance analysis of spun yarn using a digital microscope, and Table 2 is a photograph of the appearance analysis of spun yarn using an SEM.

[0123]

[0124]

[0125] As a result of verifying Tables 1 and 2 above, it was confirmed that the shape of the regenerated PET covered by the modal spun yarn in the form of a cellulose-based spun yarn (Sheath-Core) was confirmed.

[0126] Table 3 below shows the results of verifying the physical properties of the prepared cellulose-based spun yarn.

[0127] The physical properties are the results of measuring the mixing ratio, denier, and tensile strength and elongation.

[0128] Test standards target result note Mixing ratio KS K 0210 (Dissolution Method, Quantitative Mixing Ratio, %) Cellulose-based 30% or more 50.8 Quantitative target Denier (fineness) General test methods, Denier 132 131.9 In terms of design Seal-shaped spirit KS K 0520: 2021, Grab method, N,%) Strength 200N or more 307.8 More than 25% of believers 47.3

[0130] [Knitting of fabric]

[0131] A warp knitted fabric was prepared using the above-mentioned prepared spun yarn.

[0132] As shown in FIG. 2, a fabric was knitted using a cellulose-based 40-count spun yarn that satisfies a natural touch and was test-produced according to the present invention, and the physical properties of the knitted fabric were verified. The appearance analysis and physical properties of the knitted fabric were also verified, and the results are shown in Tables 4 to 6 below.

[0133] The knitting conditions of the above warp knitting fabric were carried out under the following conditions.

[0134] <5MM VELBOA Knitting Conditions>

[0135] 800 RPM

[0136] L1 P / F 50 / 24 SD Tissue 23 10 Span 1900 585 strands 8 beams used - Recycle PET

[0137] L2 P / F 50 / 24 SD Tissue 10 12 Board 1550 585 strands 8 beams used - Recycle PET

[0138] L3 Tencel spun yarn, using 40 or 50 count, weave 10 1112, 5950, 583 strands, using 8 beams - MVS spun yarn

[0139] 84" X 690 G / YD Density 17.5 C / CM

[0140] Set guide clamp to 1mm, sinker position to 1.6, and lower tongue height by 1 angle.

[0141] The fabric is rolled vertically and neatly, and stacked in a # shape to prevent compression during stacking, and a double body is installed to prevent edge shaking.

[0143] Table 4 below shows the appearance analysis photos of the knitted fabric (BR-X063) using a digital microscope, and Table 5 shows the appearance analysis photos of the spun yarn using an SEM.

[0145]

[0147]

[0149] Table 6 below shows the results of verifying the physical properties of the prepared knitted fabric, such as pilling and abrasion.

[0150] Test standards target result note peeling KS K ISO 12945-2, Martindale method Grade 4 or higher 4-5 For quality control Abrasion KS K ISO 12947-2, 9kPa Over 20,000 times 20,000↑ For quality control

[0152] [Dye Test]

[0153] A dyeing test was conducted using the knitted fabric prepared above. It is necessary to perform 2-side dyeing with the blended spun yarn of PET and MODAL fibers prepared in this invention, and to verify the dyeability, dyeing was performed at different concentrations using four types of disperse dyes for PET dyeing and four types of reactive dyes for MODAL dyeing.

[0154] 1) 1-Side Dyeing - 4 types of disperse dyes for PET dyeing (Table 7)

[0155] 2) 1-Side Dyeing - 4 Reactive Dyes for Modal Dyeing (Table 8)

[0156] 3) 2-Side Dyeing - 4 types of disperse dyes for PET dyeing + 4 types of reactive dyes for MODAL dyeing (Table 9)

[0157] Table 7 below shows the dye concentration conditions and dyeing result photos according to 4 types of disperse dyes for 1-Side dyeing - PET dyeing (130℃×40min, R / C) of 1) above, Table 8 shows the dye concentration conditions and dyeing result photos according to 4 types of reactive dyes for 1-Side dyeing - MODAL dyeing (80℃×30min, 2 hot water washes), and Table 9 shows the dyeing progress result photos of 3 types of disperse dyes for 2-Side dyeing - PET dyeing + 3 types of reactive dyes for MODAL dyeing (130℃x40min, R / C => 80℃x30min 2-bath dyeing).

[0158]

[0160]

[0162]

[0164] The physical properties of the dyed materials shown in Table 9 above were evaluated, and the results and test standards are shown in Table 10 below.

[0165]

Claims

Claim 1 A yarn preparation step for manufacturing MVS spun yarn having a fineness of 40 or 50 count, with tensile strength and fluff improved using the MVS method, using cellulose-based fibers as the sheath yarn and recycled PET as the core yarn; and a warp knitting weaving step for preparing a warp knitted fabric by pre-treating the spun yarn and then warp knitting it using a warp knitting machine under the following knitting conditions; [Knitting Conditions] <5MM VELBOA Knitting Conditions> RPM 800 L1 P / F 50 / 24 SD weave 23 10 yarns 1900 585 strands using 8 beams - Recycle PET L2 P / F 50 / 24 SD weave 10 12 yarns 1550 585 strands using 8 beams - Recycle PET L3 Tencel spun yarn, 40 or 50 count used weave 10 1112 yarns 5950 583 strands Using 8 Beams - MVS spun yarn 84" X 690 G / YD, density 17.5 C / CM. Setting with guide grip 1MM and sinker position 1.6, with a tongue height of -1 square. The down-drop fabric is rolled vertically and neatly, and stacked in a # shape to prevent compression during loading. A double body is installed to prevent selvage. <3MM VELVOA Knitting Conditions> RPM 1100 L1 P / F 50 / 24 SD, weave 23 10, skeins 1900, 585 strands. Using 8 Beams - Recycle PETL2 P / F 50 / 24 SD, weave 10 12, skeins 1600, 585 strands. Using 8 Beams - Recycle PETL3 Tencel spun yarn, 40 count or 50 count. Weave 10 78, skeins 4230, 583 strands. Using 8 Beams - MVS spun yarn 84" X 435 G / YD density 14.3 C / CM guide clamp 1MM, SINKER position 1.6, TONGUE height -1 angle. The lowered fabric is rolled vertically and straight, and stacked in a # shape to prevent compression during stacking, and a double body is installed to prevent yarn shaking.A method for manufacturing a velboa warp-knitted fabric using cellulose-based spun yarn, characterized by comprising: a surface processing step for forming a front surface nap of the warp-knitted fabric; and a back processing step for performing heat treatment after dry setting to form a back nap after the completion of the surface processing step. Claim 2 A method for manufacturing a velboa warp-knitted fabric using a cellulose-based spun yarn according to claim 1, wherein the spun yarn comprises 60 to 70 parts by weight of cellulose fiber and 30 to 40 parts by weight of regenerated PET, has physical properties of yarn strength 10 to 13 cN / tex, elongation 6 to 9%, and uniformity 13 to 10 U%, and wherein the cellulose fiber is Modal or Tencel. Claim 3 A method for manufacturing a velboa warp-knitted fabric using cellulose-based spun yarn according to claim 1, wherein the warp-knitting step comprises the processes of warping, sizing, drawing-in, and knitting of the spun yarn, wherein the warping process is performed under conditions of RPM 100~250, tension 17~25G / tweeter, and hardness 50~60, and the knitting is performed under conditions of deep setting with a guide grip of 1MM and SINKER position of 1.6, and a TONGUE height of -1 angle downward. Claim 4 In claim 1, the surface processing step comprises: a dry setting step of heat-setting the prepared warp-knitted fabric at a temperature of 80 to 100°C and a heat treatment processing speed of 12 m / min to 13 m / min; a step of forming a primary long-pile nap on the front surface of the warp-knitted fabric after the heat treatment setting is completed; a processing step of completing the formation of the nap pile through a shearing process of cutting to a length of 3 to 5 mm after a polishing process at a temperature of 120°C to 140°C to improve the napping ability of the long-pile yarn forming the primary long-pile nap; and a dyeing process of performing a dyeing process under the following dyeing conditions after forming the nap. second A method for manufacturing a velboa warp-knitted fabric using cellulose-based spun yarn, characterized by including a dyeing step. [Dyeing Conditions] 1-bath 2-stage dyeing ground white cotton dyeing: 4 types of disperse dyes (130℃ x 40 min. + R / C) Thick pile napping (3mm Modal, 5mm Tencel) dyeing: 4 types of reactive dyes (80℃ x 30 min.) Claim 5 In claim 1, the back surface processing step comprises: a heat treatment setting step in which a dyed warp-knitted fabric is washed after the dyeing process is completed in the surface processing step, and then subjected to a second heat treatment process under conditions of a temperature of 80~100℃ and a heat treatment processing speed of 16m / min~17m / min; a step of forming a second long-pile nap on the back surface after the heat treatment setting is completed; a napping processing step in which a nap is formed by continuously performing a polishing and shearing process to form a nap through a shearing process that cuts the long-pile nap to a length of 3 to 5mm after a polishing process at a temperature of 120℃~140℃ to improve the napping properties of the long-pile yarn forming the long-pile nap; and a step of performing a washing process in a dye speed tumbler under conditions of a temperature of 150~160℃ and a fabric transfer speed of 18~20m / min after the napping processing step is completed; A method for manufacturing a velboa warp-knitted fabric using cellulose-based spun yarn, characterized by including a tentering step in which, after the completion of the washing process step, the brushed fabric is processed in a tenter to satisfy a fabric width of 60 to 70 inches and a fabric unit weight of 380 ± 25 g / yd to 420 ± 25 g / yd. Claim 6 A velboa warp-knitted fabric manufactured by the manufacturing method described in any one of claims 1 to 5, having 3 to 5 mm of nap formed on both sides.

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