CN116732667A - Water-soluble filament companion-spun low-twist wool yarn for knitting wool-shrinking fabric, preparation method thereof and knitting wool-shrinking fabric - Google Patents
Water-soluble filament companion-spun low-twist wool yarn for knitting wool-shrinking fabric, preparation method thereof and knitting wool-shrinking fabric Download PDFInfo
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- CN116732667A CN116732667A CN202310697133.8A CN202310697133A CN116732667A CN 116732667 A CN116732667 A CN 116732667A CN 202310697133 A CN202310697133 A CN 202310697133A CN 116732667 A CN116732667 A CN 116732667A
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- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
- D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
- D02G3/02—Yarns or threads characterised by the material or by the materials from which they are made
- D02G3/04—Blended or other yarns or threads containing components made from different materials
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- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2211/00—Protein-based fibres, e.g. animal fibres
- D10B2211/01—Natural animal fibres, e.g. keratin fibres
- D10B2211/02—Wool
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- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2321/00—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D10B2321/06—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds polymers of unsaturated alcohols, e.g. polyvinyl alcohol, or of their acetals or ketals
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Abstract
本发明属于纺织材料技术领域，提供了一种针织缩呢面料用水溶性长丝伴纺低捻毛纱及其制备方法和针织缩呢面料。本发明利用水溶性长丝的伴纺增强作用，在显著降低纱线捻度的同时仍使其保持较高的强力；通过降低细纱的捻度，可制得结构疏松的毛纱，提升缩呢的效果和质量，结合水溶性长丝的增强作用，解决了针织缩呢面料用纱存在的纺织加工强力要求与结构疏松以利缩呢的矛盾；通过控制水溶性长丝与羊毛粗纱的间距以及交捻三角形的类型，使水溶性长丝和羊毛粗纱能够形成交捻，而不形成包覆，从而在保证纱线强力的同时实现了水溶性长丝的顺利溶除。实施例的结果显示，本发明提供的水溶性长丝伴纺低捻毛纱的断裂强力为397.60cN。
The invention belongs to the technical field of textile materials and provides a knitted woolen fabric with water-soluble filament spinning low-twist wool yarn, a preparation method thereof and a knitted woolen fabric. The invention utilizes the accompanying spinning reinforcing effect of water-soluble filaments to significantly reduce the twist of the yarn while still maintaining a high strength; by reducing the twist of the spun yarn, a wool yarn with a loose structure can be produced, thereby improving the effect of shrinking and Quality, combined with the reinforcing effect of water-soluble filaments, solves the contradiction between the strong textile processing requirements and the loose structure of yarns for knitted wool fabrics; by controlling the distance between water-soluble filaments and wool rovings and the twist triangle The type enables the water-soluble filaments and wool rovings to form a twist without forming a coating, thereby ensuring the strength of the yarn while achieving the smooth removal of the water-soluble filaments. The results of the examples show that the breaking strength of the water-soluble filament companion low-twist wool yarn provided by the present invention is 397.60 cN.
Description
Technical Field
The invention relates to the technical field of textile materials, in particular to a water-soluble filament companion-spinning low-twist wool yarn for a knitting wool-shrinking fabric, a preparation method thereof and the knitting wool-shrinking fabric.
Background
The wool fiber has fulling property (felting property) due to the surface scale structure and natural curling, the fulling processing means that the wool fiber is mechanically extruded and rubbed under the damp and hot condition, the wool fiber in the fabric generates mass center movement due to the directional friction effect, and the wool fiber is mutually inserted and interweaved for felting, and the fabric is contracted to form a special compact felting structure.
The wool-shrinking effect and the suede quality are good, the wool fibers in the textile yarns are required to have smaller resistance when in penetration and movement, the structure of the yarns is required to be loose, the interaction force among the fibers is weaker, penetration and movement of the wool fibers are facilitated, and if the fibers in the yarns are tightly arranged and piled and have strong interaction, penetration and movement of the wool is difficult, and the wool-shrinking effect is poor. The structure of the yarn and the strength of the interactions between the fibers in the yarn depend on the degree of twist applied to the yarn, as determined by the spinning process. The yarn has high twist, compact structure, strong interaction among fibers and high yarn forming strength; on the contrary, the yarn twist is small, the yarn forming structure is loose, the interaction between fibers is weak, and the yarn forming strength is low. From the viewpoint of ensuring the milling effect, the structure of the yarn is required to be loose, and the twisting is preferably low. However, the yarn has small twist and low strength, and the breakage rate is increased in the spinning and weaving processes, and even the yarn cannot be normally produced.
Therefore, the contradiction between the textile processing strength requirement and the loose structure of the yarn for knitting the tweed fabric is a technical problem which needs to be solved in the field.
Disclosure of Invention
The invention aims to provide water-soluble filament spinning low-twist wool yarn for a knitting wool-milling fabric, a preparation method thereof and the knitting wool-milling fabric.
In order to achieve the above object, the present invention provides the following technical solutions:
the invention provides a water-soluble filament companion-spinning low-twist wool yarn for a knitting wool-shrinking fabric, which is prepared from the water-soluble filament and wool roving through a spinning process;
the dissolution temperature of the water-soluble filament is less than or equal to 80 ℃;
in the spinning step, the twist of spun yarn is reduced by 15-45% compared with the twist of wool yarn without water-soluble filaments; the cross-twisting triangle of the water-soluble filaments and the wool roving is an isosceles triangle; the distance between the water-soluble filament and the wool roving output from the jaw of the front roller is 2-4 mm.
Preferably, the bus density of the water-soluble filaments is less than or equal to 75D, and the number of the filaments of the water-soluble filaments is 12-48F.
Preferably, when the twist of the spun yarn is reduced by 15 to 20% compared with the twist of the wool yarn without the water-soluble filaments, the distance between the water-soluble filaments and the wool roving output from the front roller jaw is 3 to 4mm; when the twist of the spun yarn is 20-45% of the twist of the wool yarn without the water-soluble filaments, the distance between the water-soluble filaments and the wool roving output from the front roller jaw is 2-3 mm.
Preferably, the ratio of the number of water-soluble filaments to the number of wool rovings is 1:1.
preferably, the water-soluble filaments comprise water-soluble polyvinyl alcohol filaments.
Preferably, the wool roving comprises a pure or blended wool roving.
The invention provides a preparation method of water-soluble filament companion spinning low-twist wool yarn for a knitted tweed fabric, which comprises the following steps: and (3) carrying out a spinning process on the water-soluble filaments and the wool roving to obtain the water-soluble filament companion spinning low-twist wool yarn for the knitted wool-shrinking fabric.
The invention also provides a knitting fulling fabric, which is prepared from the water-soluble filament and low-twist wool yarn for knitting fulling fabric or the water-soluble filament and low-twist wool yarn for knitting fulling fabric prepared by the preparation method through weaving, dissolving the water-soluble filament, humidifying, preshrinking, dewatering and fulling.
Preferably, the time for dissolving the water-soluble filaments is 3-15 min.
The invention provides a water-soluble filament companion-spinning low-twist wool yarn for a knitting wool-shrinking fabric, which is prepared from the water-soluble filament and wool roving through a spinning process; the dissolution temperature of the water-soluble filament is less than or equal to 80 ℃; in the spinning step, the twist of spun yarn is reduced by 15-45% compared with the twist of wool yarn without water-soluble filaments; the cross-twisting triangle of the water-soluble filaments and the wool roving is an isosceles triangle; the distance between the water-soluble filament and the wool roving output from the jaw of the front roller is 2-4 mm. The invention utilizes the companion spinning enhancement effect of the water-soluble filament yarn, and can remarkably reduce the yarn twist and simultaneously keep higher strength; by reducing the twist of the spun yarn, the wool yarn with loose structure can be prepared, the subsequent milling processing is facilitated, the milling effect and quality are improved, the reinforcing effect of water-soluble filaments is combined, and the contradiction that the yarn has higher twist to endow the yarn with certain strength, the requirements of spinning and weaving processing on the yarn strength are met, the yarn has lower twist to endow the yarn with a loose structure, and the milling processing effect and quality are improved is solved; by controlling the distance between the water-soluble filaments and the wool roving output from the jaw of the front roller and the type of the cross-twisting triangle of the water-soluble filaments and the wool roving, the water-soluble filaments and the wool roving can form cross twisting without forming cladding, thereby ensuring the yarn strength and simultaneously realizing the smooth dissolution of the water-soluble filaments. The results of the examples show that the breaking strength of the water-soluble filament spun-concomitant low-twist wool yarn for the knitted tweed fabric provided by the invention is 397.60cN, the strength unevenness is 4.73CV percent, the breaking elongation is 12.83 percent, and the elongation unevenness is 4.61CV percent.
The invention has the beneficial effects that:
(1) The invention adopts the water-soluble filament yarn 'accompanied spinning', reduces the yarn twist for the knitting tweed fabric, solves the contradiction that the yarn should have higher twist to endow the yarn with certain strength, meets the requirement of spinning and weaving processing on the yarn strength, and the yarn should have lower twist to endow the yarn with a looser structure, and improves the tweed processing effect and quality.
(2) The reduction of the twist of the spun yarn can increase the spinning yield. In the spinning process, the spindle speed is unchanged, the twist is changed by changing the output speed of the front roller, and the twist = spindle speed/output speed of the front roller, so that the spinning twist is reduced, the output speed of the front roller can be increased, and the spinning yield is further increased.
(3) The incorporation of water-soluble filaments can improve yarn strength to a certain extent while reducing spinning twist, and reduce yarn strength unevenness, thereby reducing the breakage rate of spinning and weaving, improving the spinning and weaving efficiency and increasing the production benefit.
(4) The reduction of yarn twist in the fabric can improve the effect of milling, shorten the time of humidifying, preshrinking and milling processing and improve the production efficiency. The conventional humidifying and preshrinking and cleaning (water temperature is about 50 ℃) time is about 30 minutes, the aim is to relax internal stress of the fabric, so that the fabric is uniformly impregnated, the fiber in the fabric is hydroscopic and swells, and a small amount of velvet (wool fiber stretches out of the yarn body) is discharged, but the process of dissolving the water-soluble filament is partially completed, so that the processing time can be shortened by 40-50%. The conventional milling finishing time is generally 60-120 min according to different product varieties, and after the water-soluble filaments are dissolved, the fabric structure becomes loose, so that the milling finishing time of the same product can be shortened by 20-30%.
Drawings
FIG. 1 is a flow chart of a spinning process in a preparation method of a low twist wool yarn by using water-soluble filaments for concomitant spinning of a knitted tweed fabric;
fig. 2 is a schematic diagram of a process for producing a low-twist yarn by spinning water-soluble filaments and wool roving in a spinning process in a method for producing a low-twist yarn by spinning water-soluble filaments for a knitted tweed fabric according to the present invention;
FIG. 3 is a physical diagram of a water-soluble filament companion spinning low twist wool yarn for a knitted tweed fabric prepared in example 1 of the present invention;
FIG. 4 is a schematic representation of a knitted tweed fabric of the invention prior to dissolution of water-soluble filaments in application example 1;
fig. 5 is a physical view of the knitted tweed fabric in application example 1 of the present invention.
Detailed Description
The invention provides a water-soluble filament companion-spinning low-twist wool yarn for a knitting wool-shrinking fabric, which is prepared from the water-soluble filament and wool roving through a spinning process;
the dissolution temperature of the water-soluble filament is less than or equal to 80 ℃;
in the spinning step, the twist of spun yarn is reduced by 15-45% compared with the twist of wool yarn without water-soluble filaments; the cross-twisting triangle of the water-soluble filaments and the wool roving is an isosceles triangle; the distance between the water-soluble filament and the wool roving output from the jaw of the front roller is 2-4 mm.
The water-soluble filament companion spinning low-twist wool yarn for the knitted wool-shrinking fabric is prepared from the water-soluble filament and wool roving through a spinning process. The invention adopts the water-soluble filaments and the wool roving to prepare the water-soluble filament companion spinning low-twist wool yarn for the knitting wool-shrinking fabric, and the companion spinning enhancement effect of the water-soluble filaments obviously reduces the yarn twist and simultaneously keeps higher strength, so that the smooth spinning and weaving are ensured, and the contradiction that the yarn has higher twist to endow the yarn with certain strength, the requirements of spinning and weaving on the yarn strength are met, the yarn has lower twist to endow the yarn with a looser structure, and the effect and quality of the wool-shrinking processing are improved is solved. The invention adopts the water-soluble filament, has better reinforcing effect, and can still keep the structural integrity of the spun yarn after the water-soluble filament is dissolved out.
In the present invention, the dissolution temperature of the water-soluble filaments is not more than 80 ℃. The invention avoids the damage to wool property caused by high temperature in the process of dissolving the water-soluble filaments by adopting the water-soluble filaments with the dissolving temperature within the range.
In the present invention, the bus density of the water-soluble filaments is preferably 75D or less; the number of filaments of the water-soluble filaments is preferably 12 to 48F. The invention preferably adopts the water-soluble filament with the specification, which is beneficial to reducing the cost of raw materials and the treatment cost of the dissolved wastewater.
In the present invention, the water-soluble filaments preferably include water-soluble polyvinyl alcohol filaments. The source of the water-soluble polyvinyl alcohol filaments is not particularly limited in the present invention, and commercially available products known to those skilled in the art may be used.
In the present invention, the water-soluble filaments are preferably white in color.
In the present invention, the wool roving preferably includes a pure or blended wool roving. The composition and the proportion of the wool roving are not particularly limited, and the wool roving which is well known to the person skilled in the art can be adopted. In the invention, the blended wool roving is preferably a wool-polyester blended yarn; the mass ratio of wool to polyester in the wool-polyester blended yarn is preferably 60:40.
in the present invention, the number ratio of the water-soluble filaments to the wool roving is preferably 1:1.
in the spinning step of the present invention, the twist of the spun yarn is reduced by 15 to 45%, preferably 20 to 40%, compared with the twist of the yarn containing no water-soluble filaments. According to the invention, by reducing the twist of spun yarn, the wool yarn with loose structure can be prepared, the subsequent milling processing is facilitated, the milling effect and quality are improved, the reinforcing effect of water-soluble filaments is combined, and the contradiction that the yarn has higher twist to endow the yarn with certain strength, the requirements of spinning and weaving processing on the yarn strength are met, and the yarn has lower twist to endow the yarn with a loose structure, and the milling processing effect and quality are improved is solved. In addition, after the twist of the spun yarn is reduced, the hand feeling and the luster of the prepared knitted tweed fabric can be improved, and the quality competitiveness and the added value of the product can be improved. In the invention, when the twist is reduced by more than 45%, the wool roving is easy to break and cannot be spun normally, and the fabric prepared from the water-soluble filament spun with the low-twist wool yarn is soft and can not be suitable for subsequent milling processing.
In the spinning step, the cross-twisting triangle of the water-soluble filaments and the wool roving is an isosceles triangle. The invention controls the type of the cross-twisting triangle of the water-soluble filaments and the wool roving by adjusting the tension of the water-soluble filaments, and the water-soluble filaments and the drawn wool roving whisker strips at the output position of the front roller jaw form an isosceles triangle; the wool roving strand edge is short, the water-soluble filament yarn has the tendency of winding the roving strand, the reinforcing effect is reduced, and the water-soluble filament edge is short, so that the roving strand is coated with the water-soluble filament yarn, the dissolution of the water-soluble filament yarn is not facilitated, and the yarn structure can be damaged after the dissolution.
In the spinning step of the present invention, the distance between the water-soluble filaments and the wool roving fed from the nip of the front roller is 2 to 4mm. In the invention, the wool roving swings left and right under the action of self-twisting return transmission when being drawn and thinned in a drawing zone of a spinning process, so that a certain distance is needed between the drawn wool roving and the water-soluble filament in order to ensure that the drawn wool roving and the water-soluble filament can be twisted. In the invention, the distance between the water-soluble filament and the wool roving output from the jaw of the front roller (the distance between the roving and the inner edge of the water-soluble filament yarn after drafting) is required to ensure that the water-soluble filament yarn and the wool roving form cross twisting, but the water-soluble filament yarn cannot form a coating, so that the water-soluble filament yarn is favorably dissolved out, and if the water-soluble filament yarn is completely or partially coated by the drafted wool roving, the water-soluble filament yarn is not favorably dissolved out, and the structure of the residual spun yarn is damaged after the water-soluble filament yarn is dissolved out; meanwhile, the interval cannot be too large, because after the spinning twist is reduced, the twist of the drafted wool roving output from the front roller jaw is also reduced, and the drafted wool roving is easy to break under the action of the transverse component force of the tension of the water-soluble filament.
In the present invention, the distance between the water-soluble filaments and the wool roving output from the front roller nip is preferably adjusted by the lateral position of the godet wheel on the spinning frame.
In the present invention, when the twist of the spun yarn is reduced by 15 to 20% compared with the twist of the wool yarn without the water-soluble filaments, the distance between the water-soluble filaments and the wool roving output from the front roller nip is preferably 3 to 4mm; when the twist of the spun yarn is 20 to 45% higher than the twist of the wool yarn containing no water-soluble filaments, the distance between the water-soluble filaments and the wool roving output from the front roller nip is preferably 2 to 3mm.
The invention utilizes the companion spinning enhancement effect of the water-soluble filament yarn, and can remarkably reduce the yarn twist and simultaneously keep higher strength; by reducing the twist of the spun yarn, the wool yarn with loose structure can be prepared, the subsequent milling processing is facilitated, the milling effect and quality are improved, the reinforcing effect of water-soluble filaments is combined, and the contradiction that the yarn has higher twist to endow the yarn with certain strength, the requirements of spinning and weaving processing on the yarn strength are met, the yarn has lower twist to endow the yarn with a loose structure, and the milling processing effect and quality are improved is solved; by controlling the distance between the water-soluble filaments and the wool roving output from the jaw of the front roller and the type of the cross-twisting triangle of the water-soluble filaments and the wool roving, the water-soluble filaments and the wool roving can form cross twisting without forming cladding, thereby ensuring the yarn strength and simultaneously realizing the smooth dissolution of the water-soluble filaments.
The invention provides a preparation method of water-soluble filament companion spinning low-twist wool yarn for a knitted tweed fabric, which comprises the following steps: and (3) carrying out a spinning process on the water-soluble filaments and the wool roving to obtain the water-soluble filament companion spinning low-twist wool yarn for the knitted wool-shrinking fabric.
The operation of the spinning step is not particularly limited, and a spinning step known to those skilled in the art may be employed.
In the present invention, the spinning equipment is preferably a ring spinning frame.
The process flow of the spun yarn in the preparation method of the water-soluble filament companion spinning low-twist wool yarn for the knitted wool-shrinking fabric is shown in figure 1, a roving frame 2 is hung on a hanging spindle 1 of the roving frame of the spinning frame, wool roving 3 is unwound from the roving frame 2 along the radial direction, is fed into a jaw of a rear roller 10 of a drafting device through a collector 9 at the rear part of the drafting device under the guidance of a yarn guide rod 4, sequentially passes through a middle roller 11 with an upper leather collar and a lower leather collar and a front roller 12, and is output from the jaw of the front roller after being drafted by the drafting device; the water-soluble filament yarn tube 5 is arranged on a total air duct (square metal pipeline) below the creel, water-soluble filaments 6 unreeled from the water-soluble filament yarn tube are unreeled axially under the guidance of a yarn guide hook 7 positioned above the central line of the yarn tube 5, pass through a spring tension device 8, are fed into a front roller jaw from the rear part of a front upper roller of the drafting device under the guidance of a groove yarn guide wheel 13, and are output from the front roller jaw at a certain distance from the drafted wool roving; the drafted wool roving and the water-soluble filament are combined and then are twisted under the twisting action to form the water-soluble filament and low-twist wool yarn 14 for the knitting wool-shrinking fabric, the water-soluble filament and low-twist wool yarn for the knitting wool-shrinking fabric passes through the yarn guide hook 15, then passes through the steel wire ring 17 positioned on the ring 16 and is wound on the bobbin 18.
The schematic diagram of the water-soluble filament yarn and the wool roving twisted with the water-soluble filament yarn and the low-twist wool yarn in the spinning process in the preparation method of the water-soluble filament yarn and the wool roving spun with the low-twist wool yarn is shown in figure 2, the drafted wool roving and the water-soluble filament yarn are output at a certain interval from a front roller jaw and are twisted into a twisted triangle under the twisting action, and twisting turns are transmitted from a twisting point (a bead ring) to a feeding point (a front roller jaw), so that short fiber strands and filaments in the twisted triangle are respectively twisted after being respectively twisted to form the water-soluble filament yarn and the low-twist wool yarn spun with the low-twist wool yarn.
The invention also provides a knitting fulling fabric, which is prepared from the water-soluble filament and low-twist wool yarn for knitting fulling fabric or the water-soluble filament and low-twist wool yarn for knitting fulling fabric prepared by the preparation method through weaving, dissolving the water-soluble filament, humidifying, preshrinking, dewatering and fulling.
The weaving operation is not particularly limited in the present invention, and the weaving technical scheme well known to those skilled in the art may be adopted. In the present invention, the weaving means is preferably knitting; the knitted fabric weave structure is preferably a weft plain weave.
The operation of the water-soluble filaments is not particularly limited, and a method for dissolving water-soluble fibers, which is well known to those skilled in the art, may be employed. In the present invention, the method of dissolving the water-soluble filaments is preferably hot water dissolution.
In the present invention, the temperature of the hot water for dissolving the water-soluble filaments is preferably determined according to the dissolution temperature of the water-soluble filaments used.
In the present invention, the time for dissolving the water-soluble filaments is preferably 3 to 15 minutes, more preferably 3 to 10 minutes.
In the present invention, the apparatus for dissolving the water-soluble filaments is preferably a washing machine; the medium used for dissolving the water-soluble filaments is preferably clear water.
The humidifying, preshrinking, dehydrating and fulling operations are not particularly limited, and the technical schemes of humidifying, preshrinking, dehydrating and fulling which are well known to the person skilled in the art can be adopted.
The knitted tweed fabric provided by the invention has the advantages of good tweed quality, soft hand feeling and good luster.
The technical solutions of the present invention will be clearly and completely described in the following in connection with the embodiments of the present invention. It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
The water-soluble filament yarn is used for spinning low-twist wool yarns in a concomitant manner for knitting a fulling fabric, and the low-twist wool yarns are prepared from water-soluble polyvinyl alcohol filaments and wool roving through a spinning process;
the yarn count of the water-soluble filament spun low-twist wool yarn is 31.6 public count (without water-soluble polyvinyl alcohol filament part);
the specification of the water-soluble polyvinyl alcohol filament is 50D/15F, the color is white, and the dissolution temperature is 80 ℃;
the wool roving is wool 60/polyester 40 blended wool roving;
the number ratio of water-soluble polyvinyl alcohol filaments to wool roving is 1:1, a step of;
in the spinning step, the twist of the spun yarn is 452 turns/m, and the twist coefficient alpha m 80, 20% less twist than a wool yarn without water-soluble filaments; the cross-twisting triangle of the water-soluble polyvinyl alcohol filaments and the wool roving is an isosceles triangle; water-soluble polyvinyl alcohol filaments and their useThe distance between the wool roving output by the roller jaw is set to be 4mm.
FIG. 3 is a physical view showing the water-soluble filaments spun with the low twist wool yarn for the knitted denim fabric in this example. As can be seen from fig. 3, the water-soluble polyvinyl alcohol filaments are exposed at the yarn surface.
Example 2
The water-soluble filament yarn is used for spinning low-twist wool yarns in a concomitant manner for knitting a fulling fabric, and the low-twist wool yarns are prepared from water-soluble polyvinyl alcohol filaments and wool roving through a spinning process;
the yarn count of the water-soluble filament spun low-twist wool yarn is 31.6 public count (without water-soluble polyvinyl alcohol filament part);
the specification of the water-soluble polyvinyl alcohol filament is 50D/15F, the color is white, and the dissolution temperature is 70 ℃;
the wool roving is wool 60/polyester 40 blended wool roving;
the number ratio of water-soluble polyvinyl alcohol filaments to wool roving is 1:1, a step of;
in the spinning step, the twist of spun yarn is 339 twist/m, and the twist coefficient alpha m 60, 40% less twist than a wool yarn without water-soluble filaments; the cross-twisting triangle of the water-soluble polyvinyl alcohol filaments and the wool roving is an isosceles triangle; the distance between the water-soluble polyvinyl alcohol filaments and the wool roving output from the jaw of the front roller was set to 2mm.
Comparative example 1
Wool yarns without water-soluble filaments are prepared from wool roving through a spinning process;
the yarn count of the wool yarn without the water-soluble filaments is 31.6 public count;
the wool roving is wool 60/polyester 40 blended wool roving;
in the spinning process, the twist degree of the spun yarn is 565 twists/m, and the twist coefficient alpha m 100.
The tensile breaking properties of the composite yarns of examples 1 to 2 and comparative example 1 were measured according to GB/T3916-2013 measurement of breaking strength and elongation at break (CRE method) of individual yarns of textile package yarns, and the test results are shown in Table 1.
TABLE 1 tensile breaking properties of the composite yarns of examples 1-2 and comparative example 1
As can be seen from the table, although the spinning twist of the low twist yarn with the water-soluble filaments in the knitted denim fabric of example 1 and example 2 was reduced by 20% and 40% respectively compared with comparative example 1, the breaking strength of the low twist yarn with the water-soluble filaments in the knitted denim fabric was increased by 51.46% and 55.89% respectively due to the incorporation of the water-soluble polyvinyl alcohol filaments, and the strength unevenness was reduced by 66.64% and 72.67%, respectively. The improvement of the strength of the water-soluble filaments spun with the low-twist wool yarns in the knitted wool fabric is caused by the merging effect of the water-soluble filaments and the improvement of the fiber axiality in the spun yarns after the twist is reduced, and the axial component force contributing to the yarn strength is increased. The remarkable reduction of the strength unevenness mainly results from the merging effect of the water-soluble filaments, so that the strong weak rings of the water-soluble filaments with the spinning of the low-twist wool yarns for the knitted fulling fabric are remarkably reduced. The improvement of the strength of the water-soluble filaments for spinning the low-twist wool yarns and the reduction of the strength unevenness are both beneficial to the improvement of spinning and weaving efficiency (the reduction of the spinning and weaving breakage rate). The elongation at break of the water-soluble filament spun low-twist wool yarn is lower than that of the common yarn, and the residual short fiber strands can be disintegrated once the water-soluble filament breaks. The water-soluble filaments are used for spinning the low-twist wool yarns, so that the breaking elongation of the knitted wool fabric is still more than 12%, the reduction of the breaking elongation has no influence on spinning and weaving processing, and the elasticity of the fabric cannot be influenced after the water-soluble filaments are dissolved in the fabric.
Application example 1
The knitting wool-shrinking fabric in the example 1 is knitted, dissolved with water-soluble filaments, humidified, preshrinked, dehydrated and condensed in sequence by using water-soluble filaments and spinning low-twist wool yarns to obtain the knitting wool-shrinking fabric;
wherein the temperature for dissolving the water-soluble filaments is 80 ℃, the time is 3min, the equipment is a rinsing machine, and the medium is clear water; the knitted fabric weave structure is weft plain stitch.
FIG. 4 is a schematic representation of a knitted tweed fabric prior to dissolution of water-soluble filaments in application example 1. In fig. 4, white patches on the yarns and fabrics are water-soluble filaments with exposed yarn surfaces.
Fig. 5 is a physical view of the knitted tweed fabric in application example 1. As can be seen from fig. 5, the water-soluble filaments are completely dissolved.
The embodiment shows that the water-soluble filament yarn with low twist wool yarn for knitting wool-shrinking fabric provided by the invention has higher strength while remarkably reducing yarn twist, and solves the contradiction between the textile processing strength requirement and loose structure of the yarn for knitting wool-shrinking fabric to facilitate wool-shrinking. The breaking strength of the water-soluble filament companion spinning low-twist wool yarn for the knitted tweed fabric provided by the invention is 397.60cN, the strength unevenness is 4.73CV percent, the breaking elongation is 12.83 percent, and the elongation unevenness is 4.61CV percent.
The foregoing is merely a preferred embodiment of the present invention and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present invention, which are intended to be comprehended within the scope of the present invention.
Claims (9)
1. The water-soluble filament spun low-twist wool yarn is prepared from water-soluble filaments and wool roving through a spinning process;
the dissolution temperature of the water-soluble filament is less than or equal to 80 ℃;
in the spinning step, the twist of spun yarn is reduced by 15-45% compared with the twist of wool yarn without water-soluble filaments; the cross-twisting triangle of the water-soluble filaments and the wool roving is an isosceles triangle; the distance between the water-soluble filament and the wool roving output from the jaw of the front roller is 2-4 mm.
2. The water-soluble filament companion-spun low-twist wool yarn for the knitted tweed fabric according to claim 1, wherein the bus density of the water-soluble filaments is less than or equal to 75D, and the number of the water-soluble filaments is 12-48F.
3. The wool-milling fabric of claim 1, wherein when the twist of the spun yarn is reduced by 15 to 20% compared with the twist of the wool yarn without water-soluble filaments, the distance between the water-soluble filaments and the wool roving output from the front roller nip is 3 to 4mm; when the twist of the spun yarn is 20-45% of the twist of the wool yarn without the water-soluble filaments, the distance between the water-soluble filaments and the wool roving output from the front roller jaw is 2-3 mm.
4. The wool-milling knitted fabric according to claim 1, wherein the number ratio of the water-soluble filaments to the wool roving is 1:1.
5. the wool fabric according to claim 1 or 2, wherein the water-soluble filaments comprise water-soluble polyvinyl alcohol filaments.
6. The wool-milling fabric of claim 1, wherein the wool roving comprises pure or blended wool roving.
7. The method for producing a low twist wool yarn with water-soluble filaments for knitting a tweed fabric according to any one of claims 1 to 6, comprising: and (3) carrying out a spinning process on the water-soluble filaments and the wool roving to obtain the water-soluble filament companion spinning low-twist wool yarn for the knitted wool-shrinking fabric.
8. The knitted fulling fabric is prepared by weaving, dissolving water-soluble filaments, humidifying, preshrinking, dehydrating and fulling the water-soluble filaments with low-twist wool yarns for the knitted fulling fabric or the water-soluble filaments with low-twist wool yarns for the knitted fulling fabric prepared by the preparation method of claim 7 according to any one of claims 1-6.
9. The knitted tweed fabric of claim 8, wherein the time to dissolve the water soluble filaments is between 3 and 15 minutes.
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| CN202310697133.8A CN116732667B (en) | 2023-06-13 | 2023-06-13 | A method for preparing a knitted felt fabric by using water-soluble filaments to spun low-twist wool yarn and the knitted felt fabric itself. |
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| CN202310697133.8A CN116732667B (en) | 2023-06-13 | 2023-06-13 | A method for preparing a knitted felt fabric by using water-soluble filaments to spun low-twist wool yarn and the knitted felt fabric itself. |
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| CN117587562A (en) * | 2023-12-04 | 2024-02-23 | 江阴海澜科技有限公司 | A wool nylon composite yarn production device and production method |
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