CN111101236A - Self-curling elastic combined filament yarn for knitted denim and preparation method thereof - Google Patents
Self-curling elastic combined filament yarn for knitted denim and preparation method thereof Download PDFInfo
- Publication number
- CN111101236A CN111101236A CN201911350234.8A CN201911350234A CN111101236A CN 111101236 A CN111101236 A CN 111101236A CN 201911350234 A CN201911350234 A CN 201911350234A CN 111101236 A CN111101236 A CN 111101236A
- Authority
- CN
- China
- Prior art keywords
- self
- denim
- ptt
- hole
- spinneret
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F8/00—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
- D01F8/04—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers
- D01F8/14—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers with at least one polyester as constituent
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/28—Formation of filaments, threads, or the like while mixing different spinning solutions or melts during the spinning operation; Spinnerette packs therefor
- D01D5/30—Conjugate filaments; Spinnerette packs therefor
- D01D5/32—Side-by-side structure; Spinnerette packs therefor
-
- 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
- D02G1/00—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics
- D02G1/20—Combinations of two or more of the above-mentioned operations or devices; After-treatments for fixing crimp or curl
- D02G1/205—After-treatments for fixing crimp or curl
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Woven Fabrics (AREA)
- Knitting Of Fabric (AREA)
- Multicomponent Fibers (AREA)
- Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
- Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
Abstract
The invention relates to a self-curling elastic combined filament yarn for knitted denim and a preparation method thereof, wherein the self-curling elastic combined filament yarn for knitted denim is extruded on the same spinneret plate; dividing the PTT melt into two paths: one path is directly extruded after being distributed; the other path is distributed together with the PET melt according to a parallel composite spinning mode and then extruded; the number ratio of the spinneret orifices m for directly extruding flow to the spinneret orifices n for extruding flow after being distributed in the parallel composite spinning mode is 1: 5-10; preparing FDY filaments according to an FDY process after extrusion, and then carrying out relaxation heat treatment to obtain the self-curling elastic mixed filament yarn for knitting the denim; the prepared self-curling elastic mixed filament yarn for knitted denim consists of PTT monofilaments and PTT/PET parallel composite monofilaments, and the monofilaments used for the self-curling elastic mixed filament yarn for knitted denim are randomly distributed in the curling direction. The PTT/PET side-by-side type composite fiber of the invention can be better applied to knitted denim.
Description
Technical Field
The invention belongs to the technical field of polyester fibers, and relates to a self-curling elastic combined filament yarn for knitted denim and a preparation method thereof.
Background
The knitted denim is one of denim classifications, and compared with the traditional denim, the knitted denim is made by a knitting method, and has better elasticity, softer hand feeling and more comfortable wearing compared with the traditional shuttle-knitted denim. The knitted denim is a garment fabric with washing fading effect produced by adopting a knitting weft knitting weaving method and adopting bundle-shaped dyed indigo, blue and black, vulcanized black and other knitting cheese on a circular knitting machine by special processes. Its varieties mainly include small fish scale looped pile, big fish scale looped pile, thick and thin twill looped pile, raised line twill looped pile, plain jersey, etc.
Knitted denim in the prior art usually contains spandex, and has the advantages of good elasticity, comfortable wearing and body fitting, but the presence of spandex also brings some serious problems to the fabric: poor heat resistance, severe degradation after heat treatment, chlorine resistance, water washing resistance and poor dimensional stability after water washing.
The PTT/PET double-component composite fiber developed by utilizing the good compatibility and the complementary performance of the PTT (polytrimethylene terephthalate) and the PET (polyethylene terephthalate), fully exerts the excellent characteristics of the PTT and PET fibers, has softer hand feeling than the polyester textured yarn, has better elastic recovery rate than the PTT and PET fibers, and has great application value. The PTT/PET self-crimping filament is formed by side-by-side composite spinning of PTT and PET, and due to different shrinkage rates and moduli of PTT and PET component materials in the fiber under the same stretching or heat treatment condition, the composite filament can form a three-dimensional spiral crimping structure similar to wool fiber, is also commonly called as a self-crimping filament and has good ductility and rebound resilience.
The PTT/PET fiber three-dimensional spiral crimp can be straightened under the stretching action of external force, and can be well restored to the initial crimp shape when the external force action is removed, so that the PTT/PET fabric has small residual deformation and good elastic resilience when stretched for many times, the unique crimp structure of the PTT/PET fiber is combined with the high extensibility of the knitted fabric tissue, the obtained PTT/PET knitted fabric has excellent extensibility, is comfortable to wear, and can fully meet the deformation caused by body movement. In addition, the appearance, luster, surface morphology and hand feeling of the PTT/PET fiber fabric are favorable, and the bulkiness, softness and the like of the fabric are also quite excellent.
The FDY yarn of PTT/PET side-by-side fiber is widely used in woven fabrics, but very troublesome problems arise in advancing its application to knitted denim: because the PTT/PET parallel fibers form a regular spiral crimp structure during thermal shrinkage, the woven knitted denim has random strip-negative uneven surfaces, and the application of the PTT/PET fibers in the knitted denim is severely restricted by the problem.
Therefore, the research on the PTT/PET parallel fiber which can be well applied to the knitted denim and the preparation method thereof have very important significance.
Disclosure of Invention
The invention provides a self-crimping elastic combined filament yarn for knitted denim and a preparation method thereof, and aims to solve the problem that the application of PTT/PET side-by-side composite fiber on the knitted denim in the prior art is limited. The invention adopts a mode of replacing a part of PTT/PET parallel composite fibers with PTT fibers, and breaks through the problem that the woven denim made of the PTT/PET parallel composite fibers has uneven strip shade because the pure PTT/PET parallel composite fibers form neat left and right spiral shapes because the contraction modes and the shapes of the PTT fibers and the PTT/PET parallel composite fibers are different, so the PTT/PET parallel composite fibers can be better applied to the woven denim.
In order to achieve the purpose, the invention adopts the following scheme:
a method for preparing self-curling elastic combined filament yarn for knitting denim, wherein the self-curling elastic combined filament yarn for knitting the denim is extruded on the same spinneret plate;
dividing the PTT melt into two paths: one path is directly extruded after being distributed; the other path is distributed together with the PET melt according to a parallel composite spinning mode and then extruded;
the number ratio of the spinneret orifices m for directly extruding flow to the spinneret orifices n for extruding flow after being distributed in the parallel composite spinning mode is 1: 5-10;
and preparing FDY filaments according to an FDY process after extrusion, and then carrying out relaxation heat treatment to obtain the self-curling elastic mixed filament yarn for knitting the denim.
Specifically, the method adopts a mode of dividing the PTT melt into two paths, wherein one path is directly extruded after being distributed, and the other path and the PTT melt are extruded after being distributed in a parallel composite spinning mode, so that the replacement is realized, and correspondingly, the number and the position relation of the distribution holes and the guide holes are reasonably set to ensure the smooth operation of the division; the invention ensures that the replaced part occupies proper proportion of the whole by controlling the ratio of the number of the spinneret orifices m which directly extrude and flow through and the number of the spinneret orifices n which extrude and flow through after being distributed according to the parallel composite spinning mode, thereby not only effectively solving the problem of uneven strip shade, but also maintaining the excellent performance of the PTT/PET parallel composite fiber; the invention arranges the spinneret orifices m and the spinneret orifices n according to the concentric circles, and controls the spinneret orifices m to be positioned at the inner ring of the concentric circles as much as possible, thereby ensuring that PTT fibers can be fully doped into PTT/PET parallel composite fibers and playing the role of breaking pure PTT/PET parallel composite fibers to form regular left and right spiral shapes; the temperature of the spinning manifold I, the temperature of the spinning manifold II and the temperature of the spinning manifold III are reasonably set, so that the temperature of the spinning manifold I, the temperature of the spinning manifold II and the temperature of the spinning manifold III can be matched with the intrinsic viscosity (0.50-0.58 dL/g) of the PET melt and the intrinsic viscosity (0.97-1.15 dL/g) of the PTT melt, the apparent viscosity of the PET component and the apparent viscosity of the PTT component extruded from a spinneret orifice are relatively close, and the smooth spinning is ensured; the shape of the spinneret orifice is not required to be adjusted, and the common single-component spinneret orifice and the parallel composite spinneret orifice are selected; the invention selects the FDY process and reasonably sets the parameters of the FDY process, and the prepared fiber has better crimp performance, good elasticity and larger filament number, and can be better applied to weaving knitted denim.
The principle of the invention is as follows:
in the prior art, the three-dimensional spiral crimping of the PTT/PET parallel composite fiber can straighten the PTT/PET parallel composite fiber under the stretching action of external force and well return to the original crimping state when the external force action is removed. Research shows that in a bundle of PTT/PET parallel composite fibers, the appearance curling form of the PTT/PET parallel composite fibers simultaneously has relatively regular left and right spiral yarn sections and random curling yarn sections, and the length and the arrangement of each yarn section are random on the whole. Due to the difference of fiber inclination state and mechanical response behavior, when the double-component PTT/PET parallel composite fiber is used for weaving a fabric, the difference of yarn reflection effect and tension unevenness is caused, protrusions or depressions are randomly formed on the surface of the fabric, and uneven transverse stripes with randomly changed brightness and darkness are found when the appearance is observed, so that the application of the double-component PTT/PET parallel composite fiber on the knitted denim is severely restricted by the appearance of the phenomena of uneven stripe shade and uneven stripe shade;
the mixed filament yarn consists of PTT fiber and PTT/PET parallel composite fiber, the PTT/PET parallel composite fiber obtains three-dimensional curled fiber after relaxation heat treatment, the three-dimensional curled fiber has neat left and right spiral forms, and the PTT fiber does not curl after the relaxation heat treatment; in the same mixed filament bundle, the number ratio of PTT monofilaments (corresponding to the spinneret orifices m) to PTT/PET parallel composite monofilaments (corresponding to the spinneret orifices n) is 1: 5-10, the PTT monofilaments have the function of breaking and forming a neat left and right spiral form, the PTT/PET parallel composite monofilaments have the function of providing elasticity for the mixed filament bundle through self-curling, the performance of the composite filament cannot be well reflected due to too many PTT monofilaments, the effect of breaking and forming the neat left and right spiral form cannot be achieved due to too few PTT monofilaments, the PTT monofilaments and PTT/PET parallel composite monofilaments are mixed according to a specific ratio, the elasticity of the mixed filament bundle is ensured, the neat left and right spiral form formed by the PTT/PET parallel composite monofilaments is broken, the curling form of each PTT/PET parallel composite monofilament in the mixed filament bundle after relaxation heat treatment is different from other fibers, and strip shade unevenness is eliminated, improves the fiber quality and enlarges the application range.
As a preferred technical scheme:
in the above-described method for producing the self-crimping elastic mixed filament yarn for knitted denim, the mass ratio of the PTT melt passing through the spinneret n to the PET melt is 50:50, and the ratio of the equivalent diameter of the spinneret m to the equivalent diameter of the spinneret n is 1: 1.
According to the preparation method of the self-curling elastic mixed filament yarn for knitting denim, the spinneret holes m are circular, oval, triangular, Y-shaped, cross-shaped, "8" -shaped, rectangular or straight spinneret holes, and the spinneret holes n are circular, oval or 8 "-shaped spinneret holes.
According to the preparation method of the self-curling elastic mixed filament yarn for the knitted denim, all the spinneret orifices are distributed in concentric circles, the spinneret orifices on the same circle are m or n, and the spinneret orifices on the circle at the outermost circle are n, so that the PTT monofilaments are mixed in the middle of the PTT/PET parallel composite monofilaments, and the effect of breaking and forming a neat left and right spiral form is achieved; otherwise, more PTT monofilaments are distributed at the outermost turns, so that the inner PTT/PET side-by-side composite monofilaments still have neat left and right spiral shapes.
In the above method for preparing the self-curling elastic combined filament yarn for knitted denim, the parameters of the FDY process are as follows: the cooling temperature is 20-25 ℃, the network pressure is 0.20-0.30 MPa, the one-roll speed is 2000-2200 m/min, the one-roll temperature is 75-85 ℃, the two-roll speed is 3300-3600 m/min, the two-roll temperature is 135-145 ℃, and the winding speed is 3230-3510 m/min; the temperature of the relaxation heat treatment is 90-120 ℃, and the time is 20-30 min.
The method for preparing the self-curling elastic mixed filament yarn for knitted denim as described above, wherein the spinneret hole m is composed of the guide hole E, the transition hole and the capillary micro hole which are connected in sequence, the spinneret hole n is composed of the guide hole D, the transition hole and the capillary micro hole which are connected in sequence, the guide hole E is connected with the distribution hole A, and the guide hole D is simultaneously connected with the distribution hole B and the distribution hole C; the distribution hole A, the distribution hole B and the distribution hole C are positioned on a distribution plate in the spinning beam III; and the flow splitting is to convey the PTT melt to the distribution hole A and the distribution hole B through the spinning beam I, and simultaneously convey the PET melt to the distribution hole C through the spinning beam II.
In the preparation method of the self-crimping elastic mixed filament yarn for the knitted denim, the intrinsic viscosity of the PTT melt is 0.97-1.15 dL/g, the temperature of the spinning box I is 265-270 ℃, the intrinsic viscosity of the PET melt is 0.50-0.58 dL/g, the temperature of the spinning box II is 275-280 ℃, and the temperature of the spinning box III is 274-277 ℃ (the temperature of the spinning box III is the spinning temperature). In order to ensure smooth spinning, it is necessary to ensure that the two components have the same flow state when extruded from the same spinneret orifice, i.e. the apparent viscosity of the melt is close (generally, the greater the apparent viscosity, the poorer the flow property); the apparent viscosities of PET and PTT can be adjusted by temperature, the invention can be matched with the intrinsic viscosity of PET melt and the intrinsic viscosity of PTT melt by reasonably setting the temperatures of the spinning box I, the spinning box II and the spinning box III, the PET adopts high-temperature melting and low-temperature spinning, and the PTT adopts low-temperature melting and high-temperature spinning, so that the degradation of the PTT can be reduced.
The invention also provides the self-curling elastic mixed filament yarn for knitted denim, which is prepared by adopting the preparation method of the self-curling elastic mixed filament yarn for knitted denim, and consists of a plurality of PTT monofilaments and a plurality of PTT/PET side-by-side composite monofilaments; the random distribution of the crimp direction of the monofilaments in the self-crimping elastic combined filament yarn used for knitting denim is a mathematical concept that the crimp form of each fiber is different from that of other fibers, so that the resulting fabric is free from "stripe shade unevenness".
As a preferred technical scheme:
the self-curling elastic hybrid filament yarn for knitted denim as described above has a crimp contraction rate of 51 to 53%, a crimp stability of 83 to 86%, a compression elongation of 93 to 98%, and a crimp elastic recovery of 95 to 96%.
The self-curling elastic combined filament yarn for knitted denim has breaking strength of not less than 2.8cN/dtex, elongation at break of 43.0 + -3.0%, single filament fineness of 1.8-2.5 dtex, and total fineness of 70-200 dtex.
The self-curling elastic combined filament yarn for knitted denim prepared in the above way is prepared into a knitted fabric for strip-negative uneven condition test, and the test process is as follows: firstly, acquiring the knitted fabric image and converting the knitted fabric image into a gray image, then carrying out first processing and second processing on the gray image and then calculating a parameter D, and representing the uneven degree of the strip shade shape by using the parameter D, wherein the gray image comprises a strip shade area, a high gray value area of a non-strip shade area and a low gray value area of the non-strip shade area; the first processing is to change the pixel points of the high gray value area of the non-strip shadow area in the gray image into pure white points; the second processing is to change the pixel points of the low gray value area of the non-shadow area in the gray image into pure white points; the calculation formula of the parameter D is as follows: d ═ Σ B/a, where Σ B represents the number of pixels having a gray scale value of 0 in the grayscale image, and a represents the total number of pixels in the grayscale image.
If the D value is more than or equal to 3%, the strip shade unevenness can be judged to appear, and if the D value is more than or equal to 10%, the strip shade unevenness can be judged to appear seriously. The test results of the knitted fabric made of the self-crimping elastic hybrid yarn for knitted denim of the present invention were: the D value of the knitted fabric made of the self-curling elastic combined yarn for knitting the denim is less than or equal to 1.0 percent; this indicates that the self-curling elastic combined yarn for knitted denim produced by the present invention does not have the problem of "uneven stripes".
Has the advantages that:
(1) according to the preparation method of the self-curling elastic combined filament yarn for knitted denim, the combined filament yarn consisting of the PET fiber and the PTT/PET side-by-side type composite fiber is adopted, and the spiral curling state of a single fiber in the multifilament is changed after relaxation heat treatment, so that the curling form of each fiber is different from that of other fibers;
(2) according to the preparation method of the self-curling elastic combined filament yarn for knitted denim, the combined filament yarn consisting of the PET fiber and the PTT/PET parallel composite fiber cannot form regular arrangement of spiral curling, so that the problem of uneven strip shade shape formed by the PTT/PET parallel composite fiber in a knitted fabric is solved;
(3) the self-curling elastic mixed filament yarn for knitted denim has larger filament number and better comprehensive performance, and can be better applied to knitted denim.
Drawings
FIG. 1 is a schematic view of the distribution of the melt of the present invention, wherein A, B and C are independent distribution holes and D and E are independent guide holes.
Detailed Description
The invention will be further illustrated with reference to specific embodiments. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Further, it should be understood that various changes or modifications of the present invention may be made by those skilled in the art after reading the teaching of the present invention, and such equivalents may fall within the scope of the present invention as defined in the appended claims.
The crimp shrinkage and crimp stability of the invention are obtained by testing the tow in GB6506-2001 synthetic fiber textured yarn crimp performance test method;
the method for testing the shrinkage elongation (reflecting the elasticity and the crimp degree of the deformed filament, the fiber is firstly loaded under light load and then loaded under heavy load, and the ratio of the length difference value under the two loads to the crimp length) and the crimp elastic recovery rate is as follows:
firstly, cutting two fiber samples with the length of about 50cm, putting the two fiber samples into hot water with the temperature of 100 ℃ for treatment for 30min, taking out the two fiber samples, naturally drying the two fiber samples, then cutting the sample with the length of about 30cm, fixing one end of the sample, loading a load of 0.0018cN/dtex on the other end of the sample, continuing for 30s, marking the sample at the position of 20cm, and obtaining the initial length l of the sample1(ii) a Then, the load of 0.09cN/dtex is loaded for 30s, and the position of the mark point is measured, namely the length l when the sample is loaded with heavy load2(ii) a Finally, the heavy load is removed, and the sample is unloadedAfter shrinking for 2min, adding a load of 0.0018cN/dtex, continuing for 30s, and measuring the position of the mark point on the scale, namely the recovery length l3(ii) a The percent elongation at Compression (CE) and the elastic recovery from crimp (SR) are calculated as follows:
CE＝(l2-l1)/l1；
SR＝(l2-l3)/(l2-l1)。
example 1
The preparation method of the self-curling elastic combined filament yarn for knitting the denim comprises the following steps:
(1) extruding the self-curling elastic combined filament yarn for knitting the denim on the same spinneret plate; the method specifically comprises the following steps:
the PTT melt (intrinsic viscosity 1.15dL/g) was split into two paths: one path is directly extruded after being distributed; the other path is distributed and extruded together with PET melt (the intrinsic viscosity is 0.5dL/g) in a parallel composite spinning mode;
the number ratio of the circular spinneret orifices m through which the flow is directly extruded to the circular spinneret orifices n through which the flow is extruded after being distributed in the parallel composite spinning mode is 1: 10;
the mass ratio of the PTT melt passing through the spinneret orifice n to the PET melt is 50:50, and the ratio of the equivalent diameter of the spinneret orifice m to the equivalent diameter of the spinneret orifice n is 1: 1; all the spinneret orifices are distributed in concentric circles, the spinneret orifices on the same circle are m or n, and the spinneret orifices on the circle at the outermost circle are n;
as shown in fig. 1, the spinneret orifice m is composed of a guide hole E, a transition hole and a capillary micropore which are connected in sequence, the spinneret orifice n is composed of a guide hole D, a transition hole and a capillary micropore which are connected in sequence, the guide hole E is connected with the distribution hole A, and the guide hole D is simultaneously connected with the distribution hole B and the distribution hole C; the distribution hole A, the distribution hole B and the distribution hole C are positioned on a distribution plate in the spinning beam III; the flow splitting is to convey the PTT melt to the distribution hole A and the distribution hole B through the spinning box I, and convey the PET melt to the distribution hole C through the spinning box II; the temperature of the spinning manifold I is 270 ℃, the temperature of the spinning manifold II is 280 ℃, and the temperature of the spinning manifold III is 277 ℃;
(2) preparing FDY filaments according to an FDY process after extrusion, and then carrying out relaxation heat treatment to obtain the self-curling elastic mixed filament yarn for knitting the denim;
the parameters of the FDY process are as follows: the cooling temperature is 25 ℃, the network pressure is 0.2MPa, the one-roller speed is 2100m/min, the one-roller temperature is 75 ℃, the two-roller speed is 3460m/min, the two-roller temperature is 135 ℃, and the winding speed is 3410 m/min; the temperature of the relaxation heat treatment is 104 ℃, and the time is 30 min;
the prepared self-curling elastic mixed filament yarn for knitting the denim consists of PTT monofilaments and PTT/PET parallel composite monofilaments; the single silk curling directions of the self-curling elastic mixed filament yarn for knitting the denim are randomly distributed; the self-crimping elastic combined filament yarn for knitted denim has a crimp shrinkage rate of 53%, a crimp stability of 86%, a shrinkage elongation of 98%, and a crimp elastic recovery rate of 96%; the self-crimping elastic combined filament yarn for knitted denim has a breaking strength of 3.1cN/dtex, an elongation at break of 40.5%, a single filament fineness of 2dtex, and a total fineness of 130 dtex. The obtained self-crimping elastic combined filament yarn for knitted denim was formed into a knitted fabric and subjected to a stripe-shade variation test to test the D value of the fabric to be 0.96%.
Example 2
The preparation method of the self-curling elastic combined filament yarn for knitting the denim comprises the following steps:
(1) extruding the self-curling elastic combined filament yarn for knitting the denim on the same spinneret plate; the method specifically comprises the following steps:
the PTT melt (intrinsic viscosity 1.03dL/g) was split into two paths: one path is directly extruded after being distributed; the other path is distributed and extruded together with PET melt (the intrinsic viscosity is 0.56dL/g) according to a parallel composite spinning mode;
the number ratio of the oval spinneret orifices m which directly extrude and flow through to the round spinneret orifices n which extrude and flow through after being distributed in the parallel composite spinning mode is 1: 5;
the mass ratio of the PTT melt passing through the spinneret orifice n to the PET melt is 50:50, and the ratio of the equivalent diameter of the spinneret orifice m to the equivalent diameter of the spinneret orifice n is 1: 1; all the spinneret orifices are distributed in concentric circles, the spinneret orifices on the same circle are m or n, and the spinneret orifices on the circle at the outermost circle are n;
the spinneret orifice m is composed of a guide hole E, a transition hole and a capillary micropore which are connected in sequence, the spinneret orifice n is composed of a guide hole D, a transition hole and a capillary micropore which are connected in sequence, the guide hole E is connected with the distribution hole A, and the guide hole D is simultaneously connected with the distribution hole B and the distribution hole C; the distribution hole A, the distribution hole B and the distribution hole C are positioned on a distribution plate in the spinning beam III; the flow splitting is to convey the PTT melt to the distribution hole A and the distribution hole B through the spinning box I, and convey the PET melt to the distribution hole C through the spinning box II; the temperature of the spinning manifold I is 265 ℃, the temperature of the spinning manifold II is 276 ℃, and the temperature of the spinning manifold III is 274 ℃;
(2) preparing FDY filaments according to an FDY process after extrusion, and then carrying out relaxation heat treatment to obtain the self-curling elastic mixed filament yarn for knitting the denim;
the parameters of the FDY process are as follows: the cooling temperature is 20 ℃, the network pressure is 0.25MPa, the one-roll speed is 2150m/min, the one-roll temperature is 85 ℃, the two-roll speed is 3360m/min, the two-roll temperature is 145 ℃, and the winding speed is 3230 m/min; the temperature of the relaxation heat treatment is 103 ℃, and the time is 28 min;
the prepared self-curling elastic mixed filament yarn for knitting the denim consists of PTT monofilaments and PTT/PET parallel composite monofilaments; the single silk curling directions of the self-curling elastic mixed filament yarn for knitting the denim are randomly distributed; the self-crimping elastic combined filament yarn for knitted denim has a crimp shrinkage rate of 52.8%, a crimp stability of 85%, a shrinkage elongation of 95%, and a crimp elastic recovery of 95.4%; the self-crimping elastic combined filament yarn for knitted denim has a breaking strength of 3.15cN/dtex, an elongation at break of 42.5%, a single filament fineness of 1.8dtex, and a total fineness of 115 dtex. The obtained self-crimping elastic combined filament yarn for knitted denim was formed into a knitted fabric and subjected to a stripe-shade unevenness test to test the D value of the fabric to be 0.89%.
Example 3
The preparation method of the self-curling elastic combined filament yarn for knitting the denim comprises the following steps:
(1) extruding the self-curling elastic combined filament yarn for knitting the denim on the same spinneret plate; the method specifically comprises the following steps:
the PTT melt (intrinsic viscosity 1.07dL/g) was split into two paths: one path is directly extruded after being distributed; the other path is distributed and extruded together with PET melt (the intrinsic viscosity is 0.58dL/g) according to a parallel composite spinning mode;
the number ratio of the triangular spinneret orifices m which directly extrude and flow through to the circular spinneret orifices n which extrude and flow through after being distributed in the parallel composite spinning mode is 1: 8;
the mass ratio of the PTT melt passing through the spinneret orifice n to the PET melt is 50:50, and the ratio of the equivalent diameter of the spinneret orifice m to the equivalent diameter of the spinneret orifice n is 1: 1; all the spinneret orifices are distributed in concentric circles, the spinneret orifices on the same circle are m or n, and the spinneret orifices on the circle at the outermost circle are n;
the spinneret orifice m is composed of a guide hole E, a transition hole and a capillary micropore which are connected in sequence, the spinneret orifice n is composed of a guide hole D, a transition hole and a capillary micropore which are connected in sequence, the guide hole E is connected with the distribution hole A, and the guide hole D is simultaneously connected with the distribution hole B and the distribution hole C; the distribution hole A, the distribution hole B and the distribution hole C are positioned on a distribution plate in the spinning beam III; the flow splitting is to convey the PTT melt to the distribution hole A and the distribution hole B through the spinning box I, and convey the PET melt to the distribution hole C through the spinning box II; the temperature of the spinning manifold I is 266 ℃, the temperature of the spinning manifold II is 280 ℃, and the temperature of the spinning manifold III is 275 ℃;
(2) preparing FDY filaments according to an FDY process after extrusion, and then carrying out relaxation heat treatment to obtain the self-curling elastic mixed filament yarn for knitting the denim;
the parameters of the FDY process are as follows: the cooling temperature is 21 ℃, the network pressure is 0.23MPa, the one-roll speed is 2100m/min, the one-roll temperature is 76 ℃, the two-roll speed is 3400m/min, the two-roll temperature is 136 ℃, and the winding speed is 3270 m/min; the temperature of the relaxation heat treatment is 120 ℃, and the time is 29 min;
the prepared self-curling elastic mixed filament yarn for knitting the denim consists of PTT monofilaments and PTT/PET parallel composite monofilaments; the single silk curling directions of the self-curling elastic mixed filament yarn for knitting the denim are randomly distributed; the self-crimping elastic combined filament yarn for knitted denim has a crimp shrinkage rate of 52%, a crimp stability of 85.5%, a shrinkage elongation of 96%, and a crimp elastic recovery rate of 95.1%; the self-crimping elastic combined filament yarn for knitted denim has a breaking strength of 2.9cN/dtex, an elongation at break of 44.2%, a single filament fineness of 1.8dtex, and a total fineness of 125 dtex. The obtained self-crimping elastic combined filament yarn for knitted denim was formed into a knitted fabric and subjected to a stripe-shade variation test to test the D value of the fabric to be 0.78%.
Example 4
The preparation method of the self-curling elastic combined filament yarn for knitting the denim comprises the following steps:
(1) extruding the self-curling elastic combined filament yarn for knitting the denim on the same spinneret plate; the method specifically comprises the following steps:
the PTT melt (intrinsic viscosity 0.97dL/g) was split into two paths: one path is directly extruded after being distributed; the other path is distributed and extruded together with PET melt (the intrinsic viscosity is 0.53dL/g) according to a parallel composite spinning mode;
the number ratio of the Y-shaped spinneret orifices m directly extruding and flowing through to the circular spinneret orifices n extruding and flowing through after being distributed in the parallel composite spinning mode is 1: 6;
the mass ratio of the PTT melt passing through the spinneret orifice n to the PET melt is 50:50, and the ratio of the equivalent diameter of the spinneret orifice m to the equivalent diameter of the spinneret orifice n is 1: 1; all the spinneret orifices are distributed in concentric circles, the spinneret orifices on the same circle are m or n, and the spinneret orifices on the circle at the outermost circle are n;
the spinneret orifice m is composed of a guide hole E, a transition hole and a capillary micropore which are connected in sequence, the spinneret orifice n is composed of a guide hole D, a transition hole and a capillary micropore which are connected in sequence, the guide hole E is connected with the distribution hole A, and the guide hole D is simultaneously connected with the distribution hole B and the distribution hole C; the distribution hole A, the distribution hole B and the distribution hole C are positioned on a distribution plate in the spinning beam III; the flow splitting is to convey the PTT melt to the distribution hole A and the distribution hole B through the spinning box I, and convey the PET melt to the distribution hole C through the spinning box II; the temperature of the spinning manifold I is 269 ℃, the temperature of the spinning manifold II is 275 ℃, and the temperature of the spinning manifold III is 276 ℃;
(2) preparing FDY filaments according to an FDY process after extrusion, and then carrying out relaxation heat treatment to obtain the self-curling elastic mixed filament yarn for knitting the denim;
the parameters of the FDY process are as follows: the cooling temperature is 23 ℃, the network pressure is 0.24MPa, the first-roller speed is 2050m/min, the first-roller temperature is 80 ℃, the two-roller speed is 3500m/min, the two-roller temperature is 138 ℃, and the winding speed is 3370 m/min; the temperature of the relaxation heat treatment is 90 ℃ and the time is 24 min;
the prepared self-curling elastic mixed filament yarn for knitting the denim consists of PTT monofilaments and PTT/PET parallel composite monofilaments; the single silk curling directions of the self-curling elastic mixed filament yarn for knitting the denim are randomly distributed; the self-crimping elastic combined filament yarn for knitted denim has a crimp shrinkage rate of 52.5%, a crimp stability of 85.3%, a shrinkage elongation of 97.7%, and a crimp elastic recovery of 95.5%; the self-crimping elastic combined filament yarn for knitted denim has a breaking strength of 2.8cN/dtex, an elongation at break of 45%, a single filament fineness of 2.3dtex, and a total fineness of 105 dtex. The obtained self-crimping elastic combined filament yarn for knitted denim was formed into a knitted fabric and subjected to a stripe-shade variation test to test the D value of the fabric to be 0.75%.
Example 5
The preparation method of the self-curling elastic combined filament yarn for knitting the denim comprises the following steps:
(1) extruding the self-curling elastic combined filament yarn for knitting the denim on the same spinneret plate; the method specifically comprises the following steps:
the PTT melt (intrinsic viscosity 1.13dL/g) was split into two paths: one path is directly extruded after being distributed; the other path is distributed and extruded together with PET melt (the intrinsic viscosity is 0.53dL/g) according to a parallel composite spinning mode;
the number ratio of the cross spinneret orifices m for direct extrusion flowing to the oval spinneret orifices n for extrusion flowing after being distributed in the parallel composite spinning mode is 1: 7;
the mass ratio of the PTT melt passing through the spinneret orifice n to the PET melt is 50:50, and the ratio of the equivalent diameter of the spinneret orifice m to the equivalent diameter of the spinneret orifice n is 1: 1; all the spinneret orifices are distributed in concentric circles, the spinneret orifices on the same circle are m or n, and the spinneret orifices on the circle at the outermost circle are n;
the spinneret orifice m is composed of a guide hole E, a transition hole and a capillary micropore which are connected in sequence, the spinneret orifice n is composed of a guide hole D, a transition hole and a capillary micropore which are connected in sequence, the guide hole E is connected with the distribution hole A, and the guide hole D is simultaneously connected with the distribution hole B and the distribution hole C; the distribution hole A, the distribution hole B and the distribution hole C are positioned on a distribution plate in the spinning beam III; the flow splitting is to convey the PTT melt to the distribution hole A and the distribution hole B through the spinning box I, and convey the PET melt to the distribution hole C through the spinning box II; the temperature of the spinning manifold I is 270 ℃, the temperature of the spinning manifold II is 277 ℃, and the temperature of the spinning manifold III is 276 ℃;
(2) preparing FDY filaments according to an FDY process after extrusion, and then carrying out relaxation heat treatment to obtain the self-curling elastic mixed filament yarn for knitting the denim;
the parameters of the FDY process are as follows: the cooling temperature is 24 ℃, the network pressure is 0.28MPa, the first-roller speed is 2065m/min, the first-roller temperature is 77 ℃, the second-roller speed is 3430m/min, the second-roller temperature is 136 ℃, and the winding speed is 3360 m/min; the temperature of the relaxation heat treatment is 105 ℃, and the time is 25 min;
the prepared self-curling elastic mixed filament yarn for knitting the denim consists of PTT monofilaments and PTT/PET parallel composite monofilaments; the single silk curling directions of the self-curling elastic mixed filament yarn for knitting the denim are randomly distributed; the self-crimping elastic combined filament yarn for knitted denim has a crimp shrinkage rate of 51.6%, a crimp stability of 84%, a shrinkage elongation of 94%, and a crimp elastic recovery of 95.8%; the self-crimping elastic combined filament yarn for knitted denim has a breaking strength of 3.4cN/dtex, an elongation at break of 40%, a single filament fineness of 1.8dtex, and a total fineness of 70 dtex. The obtained self-crimping elastic combined filament yarn for knitted denim was formed into a knitted fabric and subjected to a stripe-shade variation test to test the D value of the fabric to be 0.38%.
Example 6
The preparation method of the self-curling elastic combined filament yarn for knitting the denim comprises the following steps:
(1) extruding the self-curling elastic combined filament yarn for knitting the denim on the same spinneret plate; the method specifically comprises the following steps:
the PTT melt (intrinsic viscosity 1.12dL/g) was split into two paths: one path is directly extruded after being distributed; the other path is distributed and extruded together with PET melt (the intrinsic viscosity is 0.54dL/g) according to a parallel composite spinning mode;
the number ratio of the 8-shaped spinneret orifices m which directly extrude and flow through to the oval spinneret orifices n which extrude and flow through after being distributed in the parallel composite spinning mode is 1: 6;
the mass ratio of the PTT melt passing through the spinneret orifice n to the PET melt is 50:50, and the ratio of the equivalent diameter of the spinneret orifice m to the equivalent diameter of the spinneret orifice n is 1: 1; all the spinneret orifices are distributed in concentric circles, the spinneret orifices on the same circle are m or n, and the spinneret orifices on the circle at the outermost circle are n;
the spinneret orifice m is composed of a guide hole E, a transition hole and a capillary micropore which are connected in sequence, the spinneret orifice n is composed of a guide hole D, a transition hole and a capillary micropore which are connected in sequence, the guide hole E is connected with the distribution hole A, and the guide hole D is simultaneously connected with the distribution hole B and the distribution hole C; the distribution hole A, the distribution hole B and the distribution hole C are positioned on a distribution plate in the spinning beam III; the flow splitting is to convey the PTT melt to the distribution hole A and the distribution hole B through the spinning box I, and convey the PET melt to the distribution hole C through the spinning box II; the temperature of the spinning manifold I is 268 ℃, the temperature of the spinning manifold II is 276 ℃, and the temperature of the spinning manifold III is 276 ℃;
(2) preparing FDY filaments according to an FDY process after extrusion, and then carrying out relaxation heat treatment to obtain the self-curling elastic mixed filament yarn for knitting the denim;
the parameters of the FDY process are as follows: the cooling temperature is 25 ℃, the network pressure is 0.3MPa, the one-roll speed is 2000m/min, the one-roll temperature is 75 ℃, the two-roll speed is 3600m/min, the two-roll temperature is 135 ℃, and the winding speed is 3510 m/min; the temperature of the relaxation heat treatment is 104 ℃, and the time is 20 min;
the prepared self-curling elastic mixed filament yarn for knitting the denim consists of PTT monofilaments and PTT/PET parallel composite monofilaments; the single silk curling directions of the self-curling elastic mixed filament yarn for knitting the denim are randomly distributed; the self-crimping elastic combined filament yarn for knitted denim has a crimp shrinkage rate of 51%, a crimp stability of 83%, a shrinkage elongation of 93%, and a crimp elastic recovery rate of 95%; the self-crimping elastic combined filament yarn for knitted denim had a breaking strength of 3.3cN/dtex, an elongation at break of 43%, a single filament fineness of 2.3dtex, and a total fineness of 105 dtex. The obtained self-crimping elastic combined filament yarn for knitted denim was formed into a knitted fabric and subjected to a stripe-shade variation test to test the D value of the fabric to be 0.64%.
Example 7
The preparation method of the self-curling elastic combined filament yarn for knitting the denim comprises the following steps:
(1) extruding the self-curling elastic combined filament yarn for knitting the denim on the same spinneret plate; the method specifically comprises the following steps:
the PTT melt (intrinsic viscosity 1.01dL/g) was split into two paths: one path is directly extruded after being distributed; the other path is distributed and extruded together with PET melt (the intrinsic viscosity is 0.5dL/g) in a parallel composite spinning mode;
the number ratio of the rectangular spinneret orifices m through which the direct extrusion flows to the 8-shaped spinneret orifices n through which the extrusion flows after being distributed in the parallel composite spinning mode is 1: 6;
the mass ratio of the PTT melt passing through the spinneret orifice n to the PET melt is 50:50, and the ratio of the equivalent diameter of the spinneret orifice m to the equivalent diameter of the spinneret orifice n is 1: 1; all the spinneret orifices are distributed in concentric circles, the spinneret orifices on the same circle are m or n, and the spinneret orifices on the circle at the outermost circle are n;
the spinneret orifice m is composed of a guide hole E, a transition hole and a capillary micropore which are connected in sequence, the spinneret orifice n is composed of a guide hole D, a transition hole and a capillary micropore which are connected in sequence, the guide hole E is connected with the distribution hole A, and the guide hole D is simultaneously connected with the distribution hole B and the distribution hole C; the distribution hole A, the distribution hole B and the distribution hole C are positioned on a distribution plate in the spinning beam III; the flow splitting is to convey the PTT melt to the distribution hole A and the distribution hole B through the spinning box I, and convey the PET melt to the distribution hole C through the spinning box II; the temperature of the spinning manifold I is 267 ℃, the temperature of the spinning manifold II is 276 ℃, and the temperature of the spinning manifold III is 275 ℃;
(2) preparing FDY filaments according to an FDY process after extrusion, and then carrying out relaxation heat treatment to obtain the self-curling elastic mixed filament yarn for knitting the denim;
the parameters of the FDY process are as follows: the cooling temperature is 24 ℃, the network pressure is 0.22MPa, the one-roll speed is 2200m/min, the one-roll temperature is 78 ℃, the two-roll speed is 3350m/min, the two-roll temperature is 138 ℃, and the winding speed is 3280 m/min; the temperature of the relaxation heat treatment is 114 ℃, and the time is 23 min;
the prepared self-curling elastic mixed filament yarn for knitting the denim consists of PTT monofilaments and PTT/PET parallel composite monofilaments; the single silk curling directions of the self-curling elastic mixed filament yarn for knitting the denim are randomly distributed; the self-crimping elastic combined filament yarn for knitted denim has a crimp shrinkage rate of 52%, a crimp stability of 85%, a shrinkage elongation of 96%, and a crimp elastic recovery rate of 95.3%; the self-crimping elastic combined filament yarn for knitted denim has a breaking strength of 2.8cN/dtex, an elongation at break of 46%, a single filament fineness of 2.2dtex, and a total fineness of 116 dtex. The obtained self-crimping elastic combined filament yarn for knitted denim was formed into a knitted fabric and subjected to a stripe-shade variation test to test the D value of the fabric to be 0.25%.
Example 8
The preparation method of the self-curling elastic combined filament yarn for knitting the denim comprises the following steps:
(1) extruding the self-curling elastic combined filament yarn for knitting the denim on the same spinneret plate; the method specifically comprises the following steps:
the PTT melt (intrinsic viscosity 1.13dL/g) was split into two paths: one path is directly extruded after being distributed; the other path is distributed and extruded together with PET melt (the intrinsic viscosity is 0.51dL/g) in a parallel composite spinning mode;
the number ratio of the linear spinneret orifices m which directly extrude and flow through to the 8-shaped spinneret orifices n which extrude and flow through after being distributed in the parallel composite spinning mode is 1: 6;
the mass ratio of the PTT melt passing through the spinneret orifice n to the PET melt is 50:50, and the ratio of the equivalent diameter of the spinneret orifice m to the equivalent diameter of the spinneret orifice n is 1: 1; all the spinneret orifices are distributed in concentric circles, the spinneret orifices on the same circle are m or n, and the spinneret orifices on the circle at the outermost circle are n;
the spinneret orifice m is composed of a guide hole E, a transition hole and a capillary micropore which are connected in sequence, the spinneret orifice n is composed of a guide hole D, a transition hole and a capillary micropore which are connected in sequence, the guide hole E is connected with the distribution hole A, and the guide hole D is simultaneously connected with the distribution hole B and the distribution hole C; the distribution hole A, the distribution hole B and the distribution hole C are positioned on a distribution plate in the spinning beam III; the flow splitting is to convey the PTT melt to the distribution hole A and the distribution hole B through the spinning box I, and convey the PET melt to the distribution hole C through the spinning box II; the temperature of the spinning manifold I is 269 ℃, the temperature of the spinning manifold II is 278 ℃, and the temperature of the spinning manifold III is 274 ℃;
(2) preparing FDY filaments according to an FDY process after extrusion, and then carrying out relaxation heat treatment to obtain the self-curling elastic mixed filament yarn for knitting the denim;
the parameters of the FDY process are as follows: the cooling temperature is 20 ℃, the network pressure is 0.27MPa, the one-roller speed is 2180m/min, the one-roller temperature is 79 ℃, the two-roller speed is 3500m/min, the two-roller temperature is 139 ℃ and the winding speed is 3390 m/min; the temperature of the relaxation heat treatment is 101 ℃, and the time is 29 min;
the prepared self-curling elastic mixed filament yarn for knitting the denim consists of PTT monofilaments and PTT/PET parallel composite monofilaments; the single silk curling directions of the self-curling elastic mixed filament yarn for knitting the denim are randomly distributed; the self-crimping elastic combined filament yarn for knitted denim has a crimp shrinkage of 52.7%, a crimp stability of 84.8%, a shrinkage elongation of 94%, and a crimp elastic recovery of 95.1%; the self-crimping elastic combined filament yarn for knitted denim has a breaking strength of 3.2cN/dtex, an elongation at break of 43.5%, a single filament fineness of 2.5dtex, and a total fineness of 200 dtex. The obtained self-crimping elastic combined filament yarn for knitted denim was formed into a knitted fabric and subjected to a stripe-shade variation test to test the D value of the fabric to be 0.67%.
Claims (10)
1. The preparation method of the self-curling elastic combined filament yarn for knitting the denim is characterized by comprising the following steps of: extruding the self-curling elastic combined filament yarn for knitting the denim on the same spinneret plate;
dividing the PTT melt into two paths: one path is directly extruded after being distributed; the other path is distributed together with the PET melt according to a parallel composite spinning mode and then extruded;
the number ratio of the spinneret orifices m for directly extruding flow to the spinneret orifices n for extruding flow after being distributed in the parallel composite spinning mode is 1: 5-10;
and preparing FDY filaments according to an FDY process after extrusion, and then carrying out relaxation heat treatment to obtain the self-curling elastic mixed filament yarn for knitting the denim.
2. The method of preparing a self-curling elastic hybrid filament for knitted denim according to claim 1, wherein the mass ratio of the PTT melt passing through the spinneret hole n to the PET melt is 50:50, and the ratio of the equivalent diameters of the spinneret hole m to the spinneret hole n is 1: 1.
3. The method of claim 1, wherein the spinneret holes m are circular, elliptical, triangular, Y-shaped, cross-shaped, "8" -shaped, rectangular or in-line spinneret holes, and the spinneret holes n are circular, elliptical or "8" -shaped spinneret holes.
4. The method of producing a self-curling elastic hybrid filament for knitted denim according to claim 1, wherein all the spinneret holes are arranged in concentric circles, the spinneret holes in the same circle are all m or all n, and the spinneret holes in the outermost circle are all n.
5. The method for preparing a self-curling elastic hybrid filament for knitted denim according to claim 1, wherein the parameters of the FDY process are: the cooling temperature is 20225 ℃, the network pressure is 0.2020.30MPa, the first roller speed is 200022200m/min, the first roller temperature is 75285 ℃, the second roller speed is 330023600m/min, the second roller temperature is 1352145 ℃, and the winding speed is 323023510 m/min; the temperature of the relaxation heat treatment was 902120 deg.C, and the time was 20230 min.
6. The method of preparing a self-curling elastic hybrid filament for knitted denim according to claim 5, wherein the spinneret hole m is composed of a pilot hole E, a transition hole and a capillary hole which are connected in series, the spinneret hole n is composed of a pilot hole D, a transition hole and a capillary hole which are connected in series, the pilot hole E is connected to the distribution hole A, and the pilot hole D is connected to both the distribution hole B and the distribution hole C; the distribution hole A, the distribution hole B and the distribution hole C are positioned on a distribution plate in the spinning beam III; and the flow splitting is to convey the PTT melt to the distribution hole A and the distribution hole B through the spinning beam I, and simultaneously convey the PET melt to the distribution hole C through the spinning beam II.
7. The method of claim 6, wherein the intrinsic viscosity of the PTT melt is 0.9721.15dL/g, the temperature of spinning beam I is 2652270 ℃, the intrinsic viscosity of the PET melt is 0.5020.58dL/g, the temperature of spinning beam II is 2752280 ℃, and the temperature of spinning beam III is 2742277 ℃.
8. A self-curling elastic hybrid filament for knitted denim manufactured by the method for manufacturing a self-curling elastic hybrid filament for knitted denim according to any one of claim 127, wherein: the composite filament consists of PTT monofilament and PTT/PET parallel composite monofilament; the self-curling elastic combined filament yarn for knitting denim has random distribution of the directions of curling monofilaments.
9. The self-curling elastic hybrid filament for knitted denim according to claim 8, wherein the self-curling elastic hybrid filament for knitted denim has a crimp contraction rate of 51253%, a crimp stability of 83286%, a contraction elongation of 93298%, and a crimp elastic recovery of 95296%.
10. The self-curling elastic hybrid filament for knitted denim according to claim 8, wherein the self-curling elastic hybrid filament for knitted denim has breaking strength of 2.8cN/dtex or more, elongation at break of 43.0 ± 3.0%, single filament fineness of 1.822.5dtex, total fineness of 702200 dtex.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911350234.8A CN111101236B (en) | 2019-12-24 | 2019-12-24 | Self-curling elastic combined filament yarn for knitted denim and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911350234.8A CN111101236B (en) | 2019-12-24 | 2019-12-24 | Self-curling elastic combined filament yarn for knitted denim and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111101236A true CN111101236A (en) | 2020-05-05 |
| CN111101236B CN111101236B (en) | 2023-01-31 |
Family
ID=70424497
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911350234.8A Active CN111101236B (en) | 2019-12-24 | 2019-12-24 | Self-curling elastic combined filament yarn for knitted denim and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111101236B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1130996A (en) * | 1966-03-19 | 1968-10-16 | Kanegafuchi Boseki Kabushki Ka | A method of manufacturing stretchable knitted goods |
| US20070254153A1 (en) * | 2004-07-16 | 2007-11-01 | Reliance Industries Limited | Self-Crimping Fully Drawn High Bulky Yarns And Method Of Producing Thereof |
-
2019
- 2019-12-24 CN CN201911350234.8A patent/CN111101236B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1130996A (en) * | 1966-03-19 | 1968-10-16 | Kanegafuchi Boseki Kabushki Ka | A method of manufacturing stretchable knitted goods |
| US20070254153A1 (en) * | 2004-07-16 | 2007-11-01 | Reliance Industries Limited | Self-Crimping Fully Drawn High Bulky Yarns And Method Of Producing Thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111101236B (en) | 2023-01-31 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| TWI725267B (en) | Eccentric core sheath composite fiber and mixed fiber yarn | |
| US6548429B2 (en) | Bicomponent effect yarns and fabrics thereof | |
| CN110983465B (en) | Method for preparing self-curling elastic combined filament yarn for knitting | |
| CN111118628B (en) | PBT/PET double-component elastic yarn and preparation method thereof | |
| CN111118617B (en) | Full-dull elastic yarn and preparation method thereof | |
| CN111041578B (en) | PET (polyethylene terephthalate) double-component elastic yarn with different viscosities and preparation method thereof | |
| JP7135469B2 (en) | Woven or knitted fabric using eccentric core-sheath composite fiber | |
| CN110983466B (en) | PTT/PET double-component elastic yarn and preparation method thereof | |
| CN111118663B (en) | PBT/PTT double-component elastic yarn and preparation method thereof | |
| CN111101236B (en) | Self-curling elastic combined filament yarn for knitted denim and preparation method thereof | |
| CN110965196B (en) | Sports knitted fabric and preparation method thereof | |
| CN112996956A (en) | Stretch yarn, fiber product, composite spinneret, and method for producing composite fiber | |
| CN111118629B (en) | Moisture-absorbing antibacterial knitted fabric and preparation method thereof | |
| CN111101237B (en) | High-low viscosity PET parallel composite self-crimping fiber and preparation method thereof | |
| CN111118665B (en) | Polyester-nylon composite yarn and preparation method thereof | |
| CN111058108B (en) | Self-curling elastic combined filament yarn for knitting and preparation method thereof | |
| CN111101235B (en) | CDP/PET double-component composite filament by one-step method and preparation method thereof | |
| CN111041577B (en) | PET/modified PET double-component elastic yarn and preparation method thereof | |
| CN111118712B (en) | Imitated silk elastic knitted underwear fabric and preparation method thereof | |
| CN111101264B (en) | Shrink-proof non-ironing wool-like fabric and preparation method thereof | |
| CN111118630B (en) | Soft polyester fiber and preparation method thereof | |
| KR102100565B1 (en) | Core-sheath type composite false-twist yarn and manufacturing method thereof | |
| CN111118627B (en) | Heat-humidity comfortable knitted fabric and preparation method thereof | |
| CN111058115B (en) | Preparation method of crescent self-crimping elastic fiber | |
| KR102479830B1 (en) | Core-sheath type composite false-twist yarn and manufacturing method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |