CN110983549B - Preparation method of breathable easy-to-tear elastic bandage cloth - Google Patents
Preparation method of breathable easy-to-tear elastic bandage cloth Download PDFInfo
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- CN110983549B CN110983549B CN201911386352.4A CN201911386352A CN110983549B CN 110983549 B CN110983549 B CN 110983549B CN 201911386352 A CN201911386352 A CN 201911386352A CN 110983549 B CN110983549 B CN 110983549B
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- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D1/00—Woven fabrics designed to make specified articles
- D03D1/0094—Belts
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- 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
- D01D5/08—Melt spinning methods
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- 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
- D01D5/22—Formation of filaments, threads, or the like with a crimped or curled structure; with a special structure to simulate wool
- D01D5/23—Formation of filaments, threads, or the like with a crimped or curled structure; with a special structure to simulate wool by asymmetrical cooling of filaments, threads, or the like, leaving the spinnerettes
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- 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
- D01D5/253—Formation of filaments, threads, or the like with a non-circular cross section; Spinnerette packs therefor
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- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
- D03D15/40—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the structure of the yarns or threads
- D03D15/44—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the structure of the yarns or threads with specific cross-section or surface shape
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- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
- D03D15/50—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the properties of the yarns or threads
- D03D15/56—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the properties of the yarns or threads elastic
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- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2331/00—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products
- D10B2331/04—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products polyesters, e.g. polyethylene terephthalate [PET]
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- D10B2401/00—Physical properties
- D10B2401/06—Load-responsive characteristics
- D10B2401/061—Load-responsive characteristics elastic
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- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
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Abstract
The invention relates to a preparation method of breathable easily-torn elastic bandage cloth, which comprises the steps of extruding a large lustrous PET melt from trilobal spinneret orifices with different widths on a spinneret plate (all the trilobal spinneret orifices are distributed in concentric circles, and the narrowest leaves of each trilobal spinneret orifice are randomly distributed in the direction), cooling by circular air blowing, preparing POY (polyester) filaments according to a POY (polyester pre-oriented yarn) process, carrying out air deformation to prepare the terylene lustrous profiled filaments, wherein the cooling speed is 2.0-2.5 m/s in the parameters of the POY process, the overfeed rate of a deformation area is 27-32% in the parameters of the air deformation, and weaving the terylene lustrous profiled filaments as warp and weft raw materials to prepare the breathable easily-torn elastic bandage cloth. The preparation method of the breathable easy-tearing elastic bandage cloth is simple and easy to implement and low in cost, and the prepared bandage cloth has good elasticity, easy-tearing performance and breathability.
Description
Technical Field
The invention belongs to the technical field of medical and health products, and relates to a preparation method of breathable easily-torn elastic bandage cloth.
Background
Bandages are materials for fixing and protecting an operation or an injured part, are necessary for a surgical operation, and mainly comprise 100% all-cotton plain, wrinkle elastic bandages, spandex elastic bandages, PBT elastic bandages, all-cotton gauze selvage bandages, and adhesive plaster bandages.
Elasticity, breathability and tearability are critical to the bandage cloth. Firstly, the bandage cloth needs certain elasticity, so that the joint part is not restricted in movement after use and does not shrink, and blood circulation is not hindered or the joint part is not displaced; secondly, because the wounded needs a certain time for rehabilitation, the supporting and fixing functions of the bandage are required to be used all the time before the wounded recovers, so that the bandage cloth needs to have good air permeability so as to reduce the reproduction of anaerobic bacteria, increase the aerobic respiration of tissues at the wound and accelerate the recovery rate; finally, the bandage cloth still needs to have better tearing performance, if the tearing performance of the bandage is not good, the bandage can only be cut by using tools, the difficulty and the flow of operation are increased, and the bandage cloth is not beneficial to the development of first aid of medical personnel and the difficulty of self operation.
Therefore, the research on the preparation method of the breathable easily-torn elastic bandage cloth is of great significance.
Disclosure of Invention
The invention provides a preparation method of breathable easy-tearing elastic bandage cloth, and aims to solve the problem that the bandage cloth in the prior art cannot have good elasticity, easy-tearing performance and breathability.
In order to achieve the purpose, the invention adopts the following scheme:
a preparation method of breathable easy-to-tear elastic bandage cloth comprises the steps of taking polyester bright profiled yarns as raw materials of warp yarns and weft yarns to be woven and woven to prepare the breathable easy-to-tear elastic bandage cloth;
all the polyester bright profiled yarns are prepared by the following steps:
extruding a big bright PET melt from trilobal spinneret orifices on a spinneret plate, cooling by adopting circular blowing, preparing POY (polyester pre-oriented yarn) according to a POY (polyester pre-oriented yarn) process, and carrying out air deformation to prepare the polyester bright profiled yarn;
the width ratio of three leaves of the same trilobal spinneret orifice is 1.0: 1.5-2.5, the three leaves are the same in length, the ratio of the length of the narrowest leaf to the width is 2.5-3.5: 1, and the included angle of the central lines of the two adjacent leaves is 120 degrees; the three leaves of different trilobal spinneret orifices have the same shape and size;
all the trilobal spinneret orifices are distributed in concentric circles, and the directions of the narrowest leaves of all the trilobal spinneret orifices are randomly distributed;
namely, a plurality of trilobal spinneret orifices are arranged on a spinneret plate, each trilobal spinneret orifice comprises a leaf I, a leaf II and a leaf III, and the leaf I in different trilobal spinneret orifices is the narrowest leaf in the three leaves; the width ratio of the leaves I, the leaves II and the leaves III in the same trilobal spinneret orifice is 1.0: 1.5-2.5, the lengths of the leaves I, the leaves II and the leaves III in the same trilobal spinneret orifice are the same, and the length-width ratio of the leaves I in the same trilobal spinneret orifice is 2.5-3.5: 1; in the same trilobal spinneret orifice, the included angle between the central lines of the blades I and II is 120 degrees, the included angle between the central lines of the blades II and III is 120 degrees, and the included angle between the central lines of the blades I and III is 120 degrees; the three leaves of different trilobal spinneret orifices have the same shape and size; the orientations of the blades I of all the trilobal spinneret orifices are randomly distributed;
among the parameters of the POY process, the cooling speed is 2.0-2.5 m/s;
in the air deformation parameters, the overfeed rate of a deformation area is 27-32%.
The principle of the invention is as follows:
the invention takes terylene bright profiled yarn as raw materials of warp yarn and weft yarn to prepare an air-permeable easy-to-tear elastic bandage, the terylene bright profiled yarn of the invention is POY yarn with trilobe cross section and unequal trilobe width, large bright PET melt is extruded from trilobe spinneret orifices with unequal trilobe width on the same spinneret plate, the direction of the narrowest leaf of the trilobe spinneret orifices is randomly distributed, meanwhile, circular blowing air is adopted for cooling, the trilobe cooling condition is seriously asymmetric and unbalanced, so that after the fiber is self-sprayed, the cooling speed of the melt at different positions on the cross section is inconsistent, and the main body is as follows: during spinning, the cooling air speed is high and is between 2.0 and 2.5m/s, the part close to the air blowing opening is cooled earlier and faster, and the part far away from the air blowing opening is cooled slower. When one of the trilobes in the trilobe spinneret orifice is facing the cooling wind, the melt of that lobe cools faster, while the rest of the trilobe cools slower. Under the tension of drafting, other parts in the trilobal shape are easier to draft and thin, and the stress is more concentrated, so that a trilobal stress asymmetric structure can appear on a fiber trefoil cross section, the fiber with asymmetric stress on the cross section can present three-dimensional curling performance in the heat treatment or stretching process, the curling is good, and the elastic recovery rate of the fiber is high; the POY yarn is subjected to air deformation treatment after being made into the POY yarn, and the overfeed rate of a deformation area is high, so that the titer of fibers subjected to air deformation is increased, and the strength is reduced.
The warp and weft raw materials used for preparing the breathable easily-torn elastic bandage cloth are polyester bright profiled yarns, and the polyester bright profiled yarns are good in curling and high in elastic recovery rate, so that the prepared bandage cloth has good elasticity; the breaking strength of the polyester bright yarn is small, so that the prepared bandage has the property of easy tearing; because the polyester bright yarns have three-dimensional curling performance and high filling power, the bandage cloth made of the polyester bright yarns greatly increases the amount of air passing through the cloth in unit area in unit time under a certain pressure condition, thereby effectively improving the air permeability.
As a preferred technical scheme:
according to the preparation method of the breathable easily-torn elastic bandage cloth, the intrinsic viscosity of the bright PET is 0.60-0.66 dL/g.
According to the preparation method of the breathable easily-torn elastic bandage cloth, other parameters of the POY process are as follows: the spinning speed is 3200-3500 m/s, the spinning temperature is 280-285 ℃, and the cooling temperature is 20-25 ℃;
other parameters of air deformation are: the pressure is 6.0-7.0 bar, and the temperature is 160-170 ℃.
According to the preparation method of the breathable easily-torn elastic bandage cloth, the mass ratio of the warp yarns to the weft yarns is 10: 5-6.
According to the preparation method of the breathable easily-torn elastic bandage cloth, the breaking strength of the polyester bright special-shaped yarns is 0.8-0.92 cN/dtex, the breaking elongation is 25.0 +/-5.0%, and the filament number is 1.0-1.5 dtex.
According to the preparation method of the breathable easy-to-tear elastic bandage cloth, the polyester bright profiled yarns have a three-dimensional curling shape, the curling shrinkage rate is 22-25%, the curling stability is 77-81%, the contraction elongation rate is 54-58%, and the contraction elastic recovery rate is 75-80%.
According to the preparation method of the breathable easy-to-tear elastic bandage cloth, the gram weight of the breathable easy-to-tear elastic bandage cloth is 105-120 g/m2(ii) a The tearing strength test result (the test method is GB/T3917.1-2009 impact pendulum method) is as follows: warp yarns are 3.4-5.8N, and weft yarns are 1.8-3.0N; elastic elongation gamma1130-135% and elastic recovery rate gamma297 to 99% (elastic elongation gamma)1And elastic recovery rate gamma2The test method of (1) is the same as the document' Nie Xiao Ling, Nie Caiyun, Liu Chi, Fabric elasticity test and classification thereof [ J ]]Guangxi textile technology, 2009,38(1):20-40. "); the flow resistance is 0.17 to 0.26 KPa.s/m (measured by a KES-F8-AP1 air permeability tester, the flow resistance (R) represents the test result, and the smaller the R value, the better the air permeability).
Has the advantages that:
(1) the preparation method of the breathable easily-torn elastic bandage cloth is simple and feasible and has low cost;
(2) according to the preparation method of the breathable easy-tearing elastic bandage cloth, warp yarns and weft yarns are made of polyester bright profiled yarns, and the prepared bandage cloth has good elasticity, easy tearing performance and breathability.
Drawings
FIG. 1 is a schematic view of the trilobal spinneret orifice of the present invention;
FIG. 2 is a schematic representation of the distribution of trilobal orifices of the present invention on a spinneret.
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, removing the heavy load, retracting the sample for 2min without load, then adding the 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)。
the trilobal spinneret orifices and the distribution of the trilobal spinneret orifices on the spinneret plate are shown in the attached drawings 1-2, the width ratio of three leaves of the same trilobal spinneret orifice is 1.0: 1.5-2.5, the three leaves have the same length, the ratio of the length to the width of the narrowest leaf is 2.5-3.5: 1, and the included angle of the central lines of two adjacent leaves is 120; the three leaves of different trilobal spinneret orifices have the same shape and size; all the trilobal spinneret orifices are distributed in concentric circles, and the directions of the narrowest leaves of all the trilobal spinneret orifices are randomly distributed. The drawings are only schematic and should not be construed as limiting the invention.
Example 1
A preparation method of breathable easy-tearing elastic bandage cloth comprises the following steps:
(1) preparing polyester bright yarns:
extruding a high-gloss PET melt with the intrinsic viscosity of 0.6dL/g from a trilobal spinneret orifice on a spinneret plate, cooling by adopting circular blowing, preparing POY (polyester pre-oriented yarn) according to a POY (polyester pre-oriented yarn) process, and carrying out air deformation to prepare the polyester bright profiled yarn;
the width ratio of the three leaves of the same trilobal spinneret orifice is 1.0:1.5:1.5, the three leaves have the same length, the ratio of the length of the narrowest leaf to the width of the narrowest leaf is 2.5:1, and the included angle of the central lines of the two adjacent leaves is 120 degrees; the three leaves of different trilobal spinneret orifices have the same shape and size; the spinneret plate is provided with a circle of 24 trilobal spinneret orifices which are distributed at equal intervals, the central axis of the narrowest leaf of one trilobal spinneret orifice is taken as a datum line, the central axes of the narrowest leaves of all other trilobal spinneret orifices form certain included angles with the datum line, and the included angles of inferior angles are 10 degrees, 60 degrees, 2 degrees, 30 degrees, 75 degrees, 15 degrees, 22 degrees, 90 degrees, 1 degree, 3 degrees, 170 degrees, 40 degrees, 45 degrees, 30 degrees, 10 degrees, 100 degrees, 106 degrees, 100 degrees, 41 degrees, 80 degrees, 65 degrees, 2 degrees and 50 degrees in sequence along the clockwise direction;
the parameters of the POY process are as follows: the spinning speed is 3200m/s, the spinning temperature is 280 ℃, the cooling temperature is 20 ℃, and the cooling speed is 2 m/s;
the parameters of air deformation are: the overfeed rate of the deformation zone is 27 percent, the pressure is 6bar and the temperature is 160 ℃;
the breaking strength of the prepared polyester bright profiled yarns is 0.8cN/dtex, the elongation at break is 30 percent, and the filament number is 1.0 dtex; has a three-dimensional crimp morphology with a crimp contraction of 22%, a crimp stability of 2.6%, a reduction elongation of 41%, and a crimp elastic recovery of 75%;
(2) weaving polyester bright profiled yarns serving as raw materials of warp yarns and weft yarns by a machine to prepare breathable easily-torn elastic bandage cloth; wherein the mass ratio of the warp yarns to the weft yarns is 10: 5;
the gram weight of the prepared breathable easily-torn elastic bandage cloth is 105g/m2(ii) a The tear strength test results were: warp yarn 3.4N, weft yarn 1.8N; elastic elongation gamma1130% of elastic recovery rate gamma2Is 97%; the flow resistance was 0.17KPa s/m.
Example 2
A preparation method of breathable easy-tearing elastic bandage cloth comprises the following steps:
(1) preparing polyester bright yarns:
extruding a high-gloss PET melt with the intrinsic viscosity of 0.62dL/g from a trilobal spinneret orifice on a spinneret plate, cooling by adopting circular blowing, preparing POY (polyester pre-oriented yarn) according to a POY (polyester pre-oriented yarn) process, and carrying out air deformation to prepare the polyester bright profiled yarn;
the width ratio of the three leaves of the same trilobal spinneret orifice is 1.0:1.5:2.5, the three leaves have the same length, the ratio of the length of the narrowest leaf to the width of the narrowest leaf is 2.5:1, and the included angle of the central lines of the two adjacent leaves is 120 degrees; the three leaves of different trilobal spinneret orifices have the same shape and size; the spinneret plate is provided with a circle of trilobal spinneret orifices which are distributed at equal intervals, the number of the trilobal spinneret orifices is 24, the central axis of the narrowest leaf of one trilobal spinneret orifice is taken as a datum line, the central axes of the narrowest leaves of all other trilobal spinneret orifices form certain included angles with the datum line, and the included angles of inferior angles are 10 degrees, 35 degrees, 2 degrees, 30 degrees, 75 degrees, 15 degrees, 22 degrees, 90 degrees, 1 degree, 3 degrees, 170 degrees, 40 degrees, 45 degrees, 30 degrees, 20 degrees, 100 degrees, 106 degrees, 100 degrees, 41 degrees, 80 degrees, 65 degrees, 2 degrees and 50 degrees in sequence along the clockwise direction;
the parameters of the POY process are as follows: the spinning speed is 3304m/s, the spinning temperature is 280 ℃, the cooling temperature is 20 ℃, and the cooling speed is 2.2 m/s;
the parameters of air deformation are: the overfeed rate of the deformation zone is 28 percent, the pressure is 6.3bar, and the temperature is 160 ℃;
the breaking strength of the prepared polyester bright profiled yarn is 0.81cN/dtex, the elongation at break is 28.3 percent, and the filament number is 1.1 dtex; has a three-dimensional crimp morphology with a crimp contraction of 22%, a crimp stability of 2.6%, a shrinkage elongation of 41.7%, and a crimp elastic recovery of 75%;
(2) weaving polyester bright profiled yarns serving as raw materials of warp yarns and weft yarns by a machine to prepare breathable easily-torn elastic bandage cloth; wherein the mass ratio of the warp yarns to the weft yarns is 10: 5;
the gram weight of the prepared breathable easily-torn elastic bandage cloth is 108g/m2(ii) a The tear strength test results were: warp yarn 3.5N, weft yarn 2.3N; elastic elongation gamma1131% elastic recovery rate γ2Is 97%; the flow resistance was 0.17KPa s/m.
Example 3
A preparation method of breathable easy-tearing elastic bandage cloth comprises the following steps:
(1) preparing polyester bright yarns:
extruding a high-gloss PET melt with the intrinsic viscosity of 0.62dL/g from a trilobal spinneret orifice on a spinneret plate, cooling by adopting circular blowing, preparing POY (polyester pre-oriented yarn) according to a POY (polyester pre-oriented yarn) process, and carrying out air deformation to prepare the polyester bright profiled yarn;
the width ratio of the three leaves of the same trilobal spinneret orifice is 1.0:1.8:1.8, the three leaves have the same length, the ratio of the length of the narrowest leaf to the width of the narrowest leaf is 2.7:1, and the included angle of the central lines of the two adjacent leaves is 120 degrees; the three leaves of different trilobal spinneret orifices have the same shape and size; the spinneret plate is provided with a circle of 24 trilobal spinneret orifices which are distributed at equal intervals, the central axis of the narrowest leaf of one trilobal spinneret orifice is taken as a datum line, the central axes of the narrowest leaves of all other trilobal spinneret orifices form certain included angles with the datum line, and the included angles of inferior angles are 12 degrees, 60 degrees, 2 degrees, 8 degrees, 75 degrees, 15 degrees, 22 degrees, 90 degrees, 1 degree, 3 degrees, 170 degrees, 40 degrees, 45 degrees, 30 degrees, 10 degrees, 100 degrees, 106 degrees, 100 degrees, 41 degrees, 80 degrees, 126 degrees, 2 degrees and 50 degrees in sequence along the clockwise direction;
the parameters of the POY process are as follows: the spinning speed is 3332m/s, the spinning temperature is 281 ℃, the cooling temperature is 21 ℃, and the cooling speed is 2.3 m/s;
the parameters of air deformation are: the overfeed rate of the deformation zone is 28 percent, the pressure is 6.5bar, and the temperature is 163 ℃;
the breaking strength of the prepared polyester bright profiled yarn is 0.84cN/dtex, the elongation at break is 25.4%, and the filament number is 1.0 dtex; has a three-dimensional crimp morphology with a crimp contraction of 22%, a crimp stability of 2.6%, a shrinkage elongation of 42.2%, and a crimp elastic recovery of 76%;
(2) weaving polyester bright profiled yarns serving as raw materials of warp yarns and weft yarns by a machine to prepare breathable easily-torn elastic bandage cloth; wherein the mass ratio of the warp yarns to the weft yarns is 10: 6;
the gram weight of the prepared breathable easily-torn elastic bandage cloth is 109g/m2(ii) a The tear strength test results were: warp 4.4N, weft 2.3N; elastic elongation gamma1132% of elastic recovery rate γ298 percent; the flow resistance was 0.19KPa s/m.
Example 4
A preparation method of breathable easy-tearing elastic bandage cloth comprises the following steps:
(1) preparing polyester bright yarns:
extruding a high-gloss PET melt with the intrinsic viscosity of 0.63dL/g from a trilobal spinneret orifice on a spinneret plate, cooling by adopting circular blowing, preparing POY (polyester pre-oriented yarn) according to a POY (polyester pre-oriented yarn) process, and carrying out air deformation to prepare the polyester bright profiled yarn;
the width ratio of the three leaves of the same trilobal spinneret orifice is 1.0:1.7:2.0, the three leaves have the same length, the ratio of the length of the narrowest leaf to the width of the narrowest leaf is 2.7:1, and the included angle of the central lines of the two adjacent leaves is 120 degrees; the three leaves of different trilobal spinneret orifices have the same shape and size; the spinneret plate is provided with a circle of 24 trilobal spinneret orifices which are distributed at equal intervals, the central axis of the narrowest leaf of one trilobal spinneret orifice is taken as a datum line, the central axes of the narrowest leaves of all other trilobal spinneret orifices form certain included angles with the datum line, and the included angles of inferior angles are 18 degrees, 56 degrees, 42 degrees, 37 degrees, 75 degrees, 15 degrees, 22 degrees, 90 degrees, 1 degree, 3 degrees, 170 degrees, 40 degrees, 47 degrees, 30 degrees, 10 degrees, 100 degrees, 106 degrees, 119 degrees, 41 degrees, 80 degrees, 65 degrees, 2 degrees and 50 degrees in sequence along the clockwise direction;
the parameters of the POY process are as follows: the spinning speed is 3390m/s, the spinning temperature is 282 ℃, the cooling temperature is 22 ℃, and the cooling speed is 2.3 m/s;
the parameters of air deformation are: the overfeed rate of the deformation zone is 28 percent, the pressure is 6.5bar, and the temperature is 165 ℃;
the breaking strength of the prepared polyester bright profiled yarns is 0.86cN/dtex, the elongation at break is 25.3 percent, and the filament number is 1.4 dtex; has a three-dimensional crimp morphology with a crimp contraction of 22%, a crimp stability of 2.8%, a shrinkage elongation of 43.1%, and a crimp elastic recovery of 79%;
(2) weaving polyester bright profiled yarns serving as raw materials of warp yarns and weft yarns by a machine to prepare breathable easily-torn elastic bandage cloth; wherein the mass ratio of the warp yarns to the weft yarns is 10: 5;
the gram weight of the prepared breathable easily-torn elastic bandage cloth is 109g/m2(ii) a The tear strength test results were: warp yarn 4.4N, weft yarn 2.8N; elastic elongation gamma1133%, elastic recovery rate γ298 percent;the flow resistance was 0.2KPa s/m.
Example 5
A preparation method of breathable easy-tearing elastic bandage cloth comprises the following steps:
(1) preparing polyester bright yarns:
extruding a high-gloss PET melt with the intrinsic viscosity of 0.61dL/g from a trilobal spinneret orifice on a spinneret plate, cooling by adopting circular blowing, preparing POY (polyester pre-oriented yarn) according to a POY (polyester pre-oriented yarn) process, and carrying out air deformation to prepare the polyester bright profiled yarn;
the width ratio of three leaves of the same trilobal spinneret orifice is 1.0:1.7:2.3, the length of the three leaves is the same, the ratio of the length of the narrowest leaf to the width of the narrowest leaf is 2.9:1, and the included angle of the central lines of two adjacent leaves is 120 degrees; the three leaves of different trilobal spinneret orifices have the same shape and size; the spinneret plate is provided with a circle of 12 trilobal spinneret orifices which are distributed at equal intervals, the central axis of the narrowest leaf of one trilobal spinneret orifice is taken as a datum line, the central axes of the narrowest leaves of all other trilobal spinneret orifices form certain included angles with the datum line, and the inferior angle included angles are 2 degrees, 22 degrees, 90 degrees, 1 degree, 3 degrees, 170 degrees, 100 degrees, 106 degrees, 100 degrees, 41 degrees and 80 degrees in sequence along the clockwise direction;
the parameters of the POY process are as follows: the spinning speed is 3428m/s, the spinning temperature is 283 ℃, the cooling temperature is 22 ℃, and the cooling speed is 2.4 m/s;
the parameters of air deformation are: the overfeed rate of the deformation zone is 29 percent, the pressure is 6.7bar, and the temperature is 166 ℃;
the breaking strength of the prepared polyester bright profiled yarn is 0.89cN/dtex, the elongation at break is 25.2%, and the filament number is 1.4 dtex; has a three-dimensional crimp shape with a crimp contraction rate of 22%, a crimp stability of 2.9%, a shrinkage elongation of 46.3%, and a crimp elastic recovery of 80%;
(2) weaving polyester bright profiled yarns serving as raw materials of warp yarns and weft yarns by a machine to prepare breathable easily-torn elastic bandage cloth; wherein the mass ratio of the warp yarns to the weft yarns is 10: 6;
the gram weight of the prepared breathable easily-torn elastic bandage cloth is 116g/m2(ii) a The tear strength test results were: warp yarn 4.7N, weft yarn 3N; elastic elongation gamma1133% elasticityRecovery rate γ298 percent; the flow resistance was 0.23KPa s/m.
Example 6
A preparation method of breathable easy-tearing elastic bandage cloth comprises the following steps:
(1) preparing polyester bright yarns:
extruding a high-gloss PET melt with the intrinsic viscosity of 0.65dL/g from a trilobal spinneret orifice on a spinneret plate, cooling by adopting circular blowing, preparing POY (polyester pre-oriented yarn) according to a POY (polyester pre-oriented yarn) process, and carrying out air deformation to prepare the polyester bright profiled yarn;
the width ratio of three leaves of the same trilobal spinneret orifice is 1.0:1.7:2.3, the three leaves have the same length, the ratio of the length of the narrowest leaf to the width of the narrowest leaf is 2.5:1, and the included angle of the central lines of the two adjacent leaves is 120 degrees; the three leaves of different trilobal spinneret orifices have the same shape and size; the spinneret plate is provided with a circle of 12 trilobal spinneret orifices which are distributed at equal intervals, the central axis of the narrowest leaf of one trilobal spinneret orifice is taken as a datum line, the central axes of the narrowest leaves of all other trilobal spinneret orifices form certain included angles with the datum line, and the inferior angle included angles are 90 degrees, 1 degree, 3 degrees, 170 degrees, 40 degrees, 45 degrees, 30 degrees, 10 degrees, 100 degrees, 106 degrees and 100 degrees in sequence along the clockwise direction;
the parameters of the POY process are as follows: the spinning speed is 3472m/s, the spinning temperature is 284 ℃, the cooling temperature is 23 ℃ and the cooling speed is 2.5 m/s;
the parameters of air deformation are: the overfeed rate of the deformation zone is 30 percent, the pressure is 7bar, and the temperature is 167 ℃;
the breaking strength of the prepared polyester bright profiled yarns is 0.89cN/dtex, the elongation at break is 24.1 percent, and the filament number is 1.2 dtex; has a three-dimensional crimp shape with a crimp contraction rate of 23%, a crimp stability of 2.9%, a shrinkage elongation of 47.7%, and a crimp elastic recovery of 80%;
(2) weaving polyester bright profiled yarns serving as raw materials of warp yarns and weft yarns by a machine to prepare breathable easily-torn elastic bandage cloth; wherein the mass ratio of the warp yarns to the weft yarns is 10: 6;
the gram weight of the prepared breathable easily-torn elastic bandage cloth is 119g/m2(ii) a The tear strength test results were: warp yarn 5.4N, weft yarn 3N; elastic elongationRate gamma1134% of the total amount of the copolymer, elastic recovery rate γ299 percent; the flow resistance was 0.23KPa s/m.
Example 7
A preparation method of breathable easy-tearing elastic bandage cloth comprises the following steps:
(1) preparing polyester bright yarns:
extruding a high-gloss PET melt with the intrinsic viscosity of 0.62dL/g from a trilobal spinneret orifice on a spinneret plate, cooling by adopting circular blowing, preparing POY (polyester pre-oriented yarn) according to a POY (polyester pre-oriented yarn) process, and carrying out air deformation to prepare the polyester bright profiled yarn;
the width ratio of three blades of the same trilobal spinneret orifice is 1.0:1.5:1.9, the length of the three blades is the same, the ratio of the length of the narrowest blade to the width of the narrowest blade is 2.7:1, and the included angle of the central lines of two adjacent blades is 120 degrees; the three leaves of different trilobal spinneret orifices have the same shape and size; the spinneret plate is provided with a circle of 24 trilobal spinneret orifices which are distributed at equal intervals, the central axis of the narrowest leaf of one trilobal spinneret orifice is taken as a datum line, the central axes of the narrowest leaves of all other trilobal spinneret orifices form certain included angles with the datum line, and the included angles of inferior angles are 50 degrees, 60 degrees, 2 degrees, 30 degrees, 75 degrees, 115 degrees, 22 degrees, 90 degrees, 21 degrees, 3 degrees, 170 degrees, 40 degrees, 45 degrees, 30 degrees, 10 degrees, 100 degrees, 106 degrees, 100 degrees, 41 degrees, 80 degrees, 65 degrees, 2 degrees and 50 degrees in sequence along the clockwise direction;
the parameters of the POY process are as follows: the spinning speed is 3483m/s, the spinning temperature is 285 ℃, the cooling temperature is 24 ℃, and the cooling speed is 2.5 m/s;
the parameters of air deformation are: the overfeed rate of the deformation zone is 32 percent, the pressure is 7bar, and the temperature is 170 ℃;
the breaking strength of the prepared polyester bright profiled yarns is 0.91cN/dtex, the elongation at break is 24 percent, and the filament number is 1.0 dtex; has a three-dimensional crimp shape with a crimp contraction rate of 25%, a crimp stability of 2.9%, a shrinkage elongation of 48.1%, and a crimp elastic recovery of 80%;
(2) weaving polyester bright profiled yarns serving as raw materials of warp yarns and weft yarns by a machine to prepare breathable easily-torn elastic bandage cloth; wherein the mass ratio of the warp yarns to the weft yarns is 10: 5;
the obtained product is easy to ventilateThe gram weight of the tearing elastic bandage cloth is 120g/m2(ii) a The tear strength test results were: warp yarn 5.8N, weft yarn 3N; elastic elongation gamma1135% of the total elastic recovery rate of gamma299 percent; the flow resistance was 0.25KPa s/m.
Example 8
A preparation method of breathable easy-tearing elastic bandage cloth comprises the following steps:
(1) preparing polyester bright yarns:
extruding a high-gloss PET melt with the intrinsic viscosity of 0.66dL/g from a trilobal spinneret orifice on a spinneret plate, cooling by adopting circular blowing, preparing POY (polyester pre-oriented yarn) according to a POY (polyester pre-oriented yarn) process, and carrying out air deformation to prepare the polyester bright profiled yarn;
the width ratio of three leaves of the same trilobal spinneret orifice is 1.0:1.7:2.3, the three leaves have the same length, the ratio of the length of the narrowest leaf to the width of the narrowest leaf is 3.5:1, and the included angle of the central lines of the two adjacent leaves is 120 degrees; the three leaves of different trilobal spinneret orifices have the same shape and size; the spinneret plate is provided with a circle of 24 trilobal spinneret orifices which are distributed at equal intervals, the central axis of the narrowest leaf of one trilobal spinneret orifice is taken as a datum line, the central axes of the narrowest leaves of all other trilobal spinneret orifices form certain included angles with the datum line, and the included angles of inferior angles are 10 degrees, 60 degrees, 42 degrees, 30 degrees, 75 degrees, 15 degrees, 22 degrees, 90 degrees, 1 degree, 13 degrees, 171 degrees, 40 degrees, 45 degrees, 30 degrees, 10 degrees, 88 degrees, 96 degrees, 100 degrees, 41 degrees, 80 degrees, 65 degrees, 2 degrees and 50 degrees in sequence along the clockwise direction;
the parameters of the POY process are as follows: the spinning speed is 3500m/s, the spinning temperature is 285 ℃, the cooling temperature is 25 ℃, and the cooling speed is 2.5 m/s;
the parameters of air deformation are: the overfeed rate of the deformation zone is 32 percent, the pressure is 7bar, and the temperature is 170 ℃;
the breaking strength of the prepared polyester bright profiled yarns is 0.92cN/dtex, the elongation at break is 20 percent, and the filament number is 1.5 dtex; has a three-dimensional crimp morphology with a crimp contraction of 25%, a crimp stability of 2.9%, a shrinkage elongation of 49%, and a crimp elastic recovery of 80%;
(2) weaving polyester bright profiled yarns serving as raw materials of warp yarns and weft yarns by a machine to prepare breathable easily-torn elastic bandage cloth; wherein the mass ratio of the warp yarns to the weft yarns is 10: 6;
the gram weight of the prepared breathable easily-torn elastic bandage cloth is 120g/m2(ii) a The tear strength test results were: warp yarn 5.8N, weft yarn 3N; elastic elongation gamma1135% of the total elastic recovery rate of gamma299 percent; the flow resistance was 0.26KPa s/m.
Claims (7)
1. A preparation method of breathable easy-tearing elastic bandage cloth is characterized by comprising the following steps: weaving polyester bright profiled yarns serving as raw materials of warp yarns and weft yarns by a machine to prepare breathable easily-torn elastic bandage cloth;
all the polyester bright profiled yarns are prepared by the following steps:
extruding a big bright PET melt from trilobal spinneret orifices on a spinneret plate, cooling by adopting circular blowing, preparing POY (polyester pre-oriented yarn) according to a POY (polyester pre-oriented yarn) process, and carrying out air deformation to prepare the polyester bright profiled yarn;
the width ratio of three leaves of the same trilobal spinneret orifice is 1.0: 1.5-2.5, the three leaves are the same in length, the ratio of the length of the narrowest leaf to the width is 2.5-3.5: 1, and the included angle of the central lines of the two adjacent leaves is 120 degrees; the three leaves of different trilobal spinneret orifices have the same shape and size;
all the trilobal spinneret orifices are distributed in concentric circles, and the directions of the narrowest leaves of all the trilobal spinneret orifices are randomly distributed;
among the parameters of the POY process, the cooling speed is 2.0-2.5 m/s;
in the air deformation parameters, the overfeeding rate of a deformation area is 27-32%;
the polyester bright profiled yarn has a three-dimensional curling form, and the breaking strength is 0.8-0.92 cN/dtex.
2. The method of making an air permeable, tearable, elastic bandage cloth of claim 1 wherein the intrinsic viscosity of the bright PET is 0.60-0.66 dL/g.
3. The method of claim 2, wherein the other parameters of the POY process are as follows: the spinning speed is 3200-3500 m/s, the spinning temperature is 280-285 ℃, and the cooling temperature is 20-25 ℃;
other parameters of air deformation are: the pressure is 6.0-7.0 bar, and the temperature is 160-170 ℃.
4. The preparation method of the breathable easily-torn elastic bandage cloth as claimed in claim 1, wherein the mass ratio of the warp yarns to the weft yarns is 10: 5-6.
5. The method for preparing the breathable easy-to-tear elastic bandage cloth as claimed in claim 1, wherein the elongation at break of the polyester bright profiled yarns is 25.0 +/-5.0%, and the filament number of the polyester bright profiled yarns is 1.0-1.5 dtex.
6. The method of claim 1, wherein the crimp shrinkage is 22-25%, the crimp stability is 77-81%, the shrinkage elongation is 54-58%, and the crimp elastic recovery is 75-80%.
7. The method for preparing an air-permeable easy-to-tear elastic bandage cloth as claimed in claim 1, wherein the grammage of the air-permeable easy-to-tear elastic bandage cloth is 105-120 g/m2(ii) a The tear strength test results were: warp yarns are 3.4-5.8N, and weft yarns are 1.8-3.0N; elastic elongation gamma1130-135% and elastic recovery rate gamma297-99%; the flow resistance is 0.17 to 0.26KPa s/m.
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| CN102260921A (en) * | 2010-05-24 | 2011-11-30 | 江苏华亚化纤有限公司 | Three-leaf special-shaped spinneret plate |
| CN102995198A (en) * | 2011-09-09 | 2013-03-27 | 中国石油化工股份有限公司 | Production method for improving brightness of dacron super bright yarn |
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