CN103981587A - Polyamide 6 POY/FDY interlaced yarn and preparation method adopting one-step process - Google Patents
Polyamide 6 POY/FDY interlaced yarn and preparation method adopting one-step process Download PDFInfo
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Abstract
The invention relates to a polyamide 6 POY/FDY interlaced yarn and a preparation method adopting a one-step process. According to the preparation method, polyamide 6 dry slices are subjected to screw rod melting and input in a spinning manifold, a spinning melt is extruded from two metering pumps, a spinning assembly and the micropores of two spinneret plate, cooled and cured to form two bundles of yarns, and one bundle of the yarns is subjected to nozzle oiling, pre-networking, stretching and heat-setting between a first stretching roll group and a second stretching roll group, and heat setting to obtain FDY; the other bundle of the yarns is subjected to nozzle oiling, a first yarn guide disc and a second yarn guide disc to obtain POY; the FDY and the POY are input in a central networking device to be networked, and input in a third yarn guide disc, a yarn guider and interlacing nozzles, and subjected to compounding and winding forming to prepare the polyamide 6 POY/FDY interlaced yarn. The yarn is plump and soft in touch feeling, good in elasticity, and good in moisture absorption breathability and wet permeability. The technical scheme provided by the invention has the features of short production procedure flow, less labour, low energy consumption, low production cost, high effect and good product quality.
Description
Technical field
The present invention relates to a kind of one-step method and prepare the method for polyamide 6 POY/FDY tangling yarn, belong to textile material technical field.
Background technology
At present, polyamide 6 POY/FDY network yarn on domestic and international market and products thereof is mainly by adopting two step method production procedure or using the yarn network composite technology route approach of entwining that special compression air nozzle (Network device) is processed into prepare, as adopt high speed spinning and spin-drawing one-step method or conventional spinning and stretching (UDY-DY) manufacturing procedure to make respectively the pre-oriented yarn (POY) of different cross section form or different performance, fullly drawn yarn (FDY) (FDY) or drafted fibre (DY), again by the raw material of different qualities by carry out the processing method of repetition and continuous combination of network or plying combination along filament length direction, obtain polyamide 6 POY/FDY network yarn.
The shortcoming that the above-mentioned technological process of production exists is self-evident, mainly: 1, processing process length and processing technology complexity; 2, speed of production is low, generally at 1000m/min～2500m/min, causes yielding poorly, and efficiency is low, and production cost is high; 3, conventional method makes product network uniformity effect is poor, it is inhomogeneous to dye, the product appearance making of processing poor, cannot production high-grade fabric and fabric; 4, the tangling yarn poor flexibility that conventional method makes, easy shrink, crease-resistant conformality and transmissibility are poor, unstable quality.
Summary of the invention
Problem to be solved by this invention is the defect that production procedure is long, quality is unstable and production cost is high in technology of preparing for existing polyamide 6 POY/FDY network yarn, a kind of new solution is provided, use a step to spin the quality of high speed spinning shortened process, raising product, and production capacity improves, comprehensive production cost is greatly reduced.
The present invention, by install the Silk Road transformation and the technique adjustment of the first draw-off godet and second spinning reel and the 3rd draw-off godet, middle Network device, thread guide and interlacing jet nozzle device additional below spinning spinneret, provides a kind of one-step method to prepare the method for polyamide 6 POY/FDY tangling yarn.
The technical scheme that realizes the object of the invention is to provide a kind of one-step preppn process of polyamide 6 POY/FDY tangling yarn, after dry sliced polyamide 6 employing screw rod melt extrusion processes heating and melting is filtered, enter spinning manifold and carry out spinning, spinning technique adopts two measuring pumps, respectively corresponding two cover filament spinning component and two blocks of spinneretss; Melt is extruded respectively from two spinnerets micropores, form two synnemas through cooling curing technique again, by a synnema wherein through nozzle oil, the HEAT SETTING that stretches between pre-network, the first drawing roller group and the second drawing-off hot-rolling group, obtain polyamide 6 FDY fullly drawn yarn (FDY); Another synnema oils, the first draw-off godet, is drawn to second spinning reel again through nozzle, obtains polyamide 6 POY pre-oriented yarn; Network device during the FDY obtaining and POY are inputted simultaneously, carries out compound interlacing through the 3rd draw-off godet, thread guide and interlacing jet nozzle, after coiling and molding, makes polyamide 6 POY/FDY tangling yarn.
In technical solution of the present invention, the dry sliced intrinsic viscosity of polyamide 6 is 2.4dl/g～2.6dl/g, and section moisture content is 300ppm～500ppm.
Preparation technology's of the present invention concrete scheme is:
Screw rod melt extrusion processes, adopts screw rod 6 to distinguish section melt extruded, and the temperature of 6 grades of screw rods is followed successively by 250 ± 2 DEG C, and 259 ± 2 DEG C, 262 ± 2 DEG C, 264 ± 2 DEG C, 266 ± 2 DEG C and 265 ± 2 DEG C; The temperature of being carried out spinning by the melt input spinning manifold of screw rod heating and melting is 260 ± 2 DEG C, and screw extruding head pressure is 155bar.
Cooling curing process using lateral blowing cooling curing, process conditions are: blast 650 ± 50Pa, wind speed 0.30m/s～0.60m/s, 19 DEG C ± 2 DEG C of wind-warm syndrome, humidity 90% ± 5%.
The process conditions of polyamide 6 FDY fullly drawn yarn (FDY), the pre-network pressure of pre-Network device is 0.75 ± 0.05bar, the first drawing roller group speed is 3000m/min～3500m/min, and the second drawing-off hot-rolling group speed is 3700m/min～4200m/min, and stretching, heat setting temperature are 130 DEG C～150 DEG C.
The process conditions of polyamide 6 POY pre-oriented yarn, the first draw-off godet speed is 3500m/min～3900m/min, second spinning reel speed is 3600m/min～4000m/min.
The process conditions of compound interlacing, the network pressure of middle Network device is 2.0bar～2.5bar, and the 3rd draw-off godet speed is 3615m/min～4015m/min, and thread guide and interlacing jet nozzle pressure are 3.0bar～4.0bar.
The process conditions of coiling and molding, winding speed is 3600m/min～4000m/min.
Technical solution of the present invention also comprises the polyamide 6 POY/FDY tangling yarn that a kind of above-mentioned preparation method obtains, and its specification is 110dtex～167dtex/48f～144f; Its fracture strength is 2.5cN/dtex～4.0cN/dtex, and elongation at break is 30%～55%, and network degree is 20～30/meter.
The present invention adopts one-step method to prepare polyamide 6 POY/FDY tangling yarn, there is the plentiful softness of sense of touch, good springiness, moisture absorption is ventilative and lead the moist premium properties such as well, its principle is: the vertical configuration state of fine three-dimensional forming by changing fibre section form and groups of fibers, form groove on the vertical surface of fiber, utilize this groove to strengthen the capillary effect in fabric, make fiber and fiber assembly there is stronger capillary wicking effect, and can carry rapidly moisture to fabric top layer from skin surface by capillary effect, and can not form refluence, and form potential moisture absorption airing function and lead wet effect, thereby the moisture absorption that has made up common polyamide 6 POY/FDY network yarn is ventilative and lead the defect of moist and poor flexibility.The present invention with adopt at present both at home and abroad two step method or network combined technology to prepare to possess compared with polyamide 6 POY/FDY network yarn that production process flow process is short, production cost is low, effect is high, superior product quality and the obvious feature of superiority of effectiveness.
Compared with existing two step method technology, technological principle of the present invention and beneficial effect are:
1, the present invention adopts one-step method to prepare polyamide 6 POY/FDY tangling yarn technology and method, use same set of spinning melting plant, by dry sliced polyamide 6 melting, melt is by after identical melt distributing pipe, inject two cover filament spinning components by two cover measuring pumps respectively, filament spinning component designs respectively according to spun description, then via identical spinning-side blowing cooling forming, to the compound interlacing that stretches of reeling.Production procedure of the present invention determines that melt uniformity is good, and production procedure is short, steady quality.
2, the prepared polyamide 6 POY/FDY of the present invention tangling yarn has the vertical configuration state of fiber different cross section groove and fine three-dimensional and stronger capillary wicking, possesses the plentiful softness of sense of touch, good springiness, moisture absorption ventilative and lead the moist premium properties such as good.
3, the present invention adopts one-step method to prepare polyamide 6 POY/FDY tangling yarn technology and method compared with traditional two step method complex technique, have that production process flow process is short, production capacity is large, recruitment is few, energy consumption is low, comprehensive production cost is low, added value is high, and meeting the trend of the suitability for industrialized production of current energy-saving and emission-reduction, is that traditional handicraft is unsurpassable.
4, the present invention adopts after above-mentioned technique, the social benefit of economic benefit of the present invention and energy-saving and emission-reduction is considerable, can estimate from following two aspect business accounting: first, the reduction of production cost, be in particular in: (1) adopts single step spining, operation reduces, can save approximately 218 yuan/t of cost of labor, (2) production procedure is simplified, water, electricity and gas consumption reduces, energy consumption is saved approximately 380 yuan/t, (3) adopt One-step production, the consumption of links declines, reduce costs approximately 80 yuan/t, (4) other fees are as maintenance, the expenses such as the fixed guarantor approximately 100 yuan/t that declines, add up to integrated cost approximately to reduce by 780 yuan/t of unit left and right.Second, cost of investment reduces, be in particular in: (1) two step method device and add spring-go network device and invest less 5,000,000 yuan, (2) factory building and land used drop into and can reduce by 1,000,000 (by 50,000 tons/year of scales), add up to original equipment and factory building to drop into conservative estimation and can reduce nearly 6,000,000 yuan.
Brief description of the drawings
Fig. 1 is a kind of one-step method polyamide 6 POY/FDY tangling yarn process chart that the embodiment of the present invention provides.
Detailed description of the invention
The invention provides a kind of one-step method and prepare polyamide 6 POY/FDY tangling yarn, below in conjunction with drawings and Examples, technical solution of the present invention is further elaborated.
Embodiment 1
The present embodiment provides a kind of 110dtex/96f(wherein: 43dtex/48f fullly drawn yarn (FDY), 67dtex/48f pre-oriented yarn) one-step method prepares the method for polyamide 6 POY/FDY tangling yarn, and its technological process is referring to accompanying drawing 1.Production technology is as follows:
By dry sliced the polyamide 6 that reaches spinning technique index request input screw rod, after filtering, heating and melting enters spinning manifold, spinning melt is by extruding in two measuring pumps, filament spinning component and two spinnerets micropores, cooling curing forms two synnemas, wherein a synnema through nozzle oil, stretch between pre-network, the first drawing roller group and the second drawing-off hot-rolling group, HEAT SETTING, obtain polyamide 6 fullly drawn yarn (FDY) (FDY); Another synnema oils, the first draw-off godet, is drawn to second spinning reel again through nozzle, obtains polyamide 6 pre-oriented yarn (POY); During FDY and POY are inputted simultaneously, Network device network, the 3rd draw-off godet, thread guide and interlacing jet nozzle carry out compoundly, and coiling and molding, makes polyamide 6 POY/FDY tangling yarn.Relevant 110dtex/96f one-step method polyamide 6 POY/FDY tangling yarn technological parameter is referring to table 1, and performance indications are referring to table 2.
Table 1 110dtex/96f one-step method polyamide 6 POY/FDY tangling yarn technological parameter
Table 2 110dtex/96f polyamide 6 POY/FDY tangling yarn performance indications
| Sequence number | Project | Unit | Tangling yarn |
| 1 | Fiber number specification | dtex/f | 110/96 |
| 2 | Line density | dtex | 110 |
| 3 | Fracture strength | cN/dex | 3.11 |
| 4 | Elongation at break | % | 35.3 |
| 5 | Network degree | Individual/rice | 20 |
Embodiment 2
The present embodiment provides a kind of 136dtex/108f(wherein: 43dtex/36f fullly drawn yarn (FDY), 93dtex/72f pre-oriented yarn) one-step method prepares the method for polyamide 6 POY/FDY tangling yarn, and its technological process is referring to accompanying drawing 1.Production technology is as follows:
By dry sliced the polyamide 6 that reaches spinning technique index request input screw rod, after filtering, heating and melting enters spinning manifold, spinning melt is by extruding in two measuring pumps, filament spinning component and two spinnerets micropores, cooling curing forms two synnemas, wherein a synnema through nozzle oil, stretch between pre-network, the first drawing roller group and the second drawing-off hot-rolling group, HEAT SETTING, obtain polyamide 6 fullly drawn yarn (FDY) (FDY); Another synnema oils, the first draw-off godet, is drawn to second spinning reel again through nozzle, obtains polyamide 6 pre-oriented yarn (POY); During FDY and POY are inputted simultaneously, Network device network, the 3rd draw-off godet, thread guide and interlacing jet nozzle carry out compoundly, and coiling and molding, makes polyamide 6 POY/FDY tangling yarn.Relevant 136dtex/108f one-step method polyamide 6 POY/FDY tangling yarn technological parameter is referring to table 3, and performance indications are referring to table 4.
Table 3 136dtex/108f one-step method polyamide 6 POY/FDY tangling yarn technological parameter
Table 4 136dtex/108f polyamide 6 POY/FDY tangling yarn performance indications
| Sequence number | Project | Unit | Tangling yarn |
| 1 | Fiber number specification | dtex/f | 136/108 |
| 2 | Line density | dtex | 136 |
| 3 | Fracture strength | cN/dex | 3.15 |
| 4 | Elongation at break | % | 36.6 |
| 5 | Network degree | Individual/rice | 20 |
Claims (10)
1. the one-step preppn process of a polyamide 6 POY/FDY tangling yarn, after dry sliced polyamide 6 employing screw rod melt extrusion processes heating and melting is filtered, enter spinning manifold and carry out spinning, it is characterized in that: spinning technique adopts two measuring pumps, respectively corresponding two cover filament spinning component and two blocks of spinneretss; Melt is extruded respectively from two spinnerets micropores, form two synnemas through cooling curing technique again, by a synnema wherein through nozzle oil, the HEAT SETTING that stretches between pre-network, the first drawing roller group and the second drawing-off hot-rolling group, obtain polyamide 6 FDY fullly drawn yarn (FDY); Another synnema oils, the first draw-off godet, is drawn to second spinning reel again through nozzle, obtains polyamide 6 POY pre-oriented yarn; Network device during the FDY obtaining and POY are inputted simultaneously, carries out compound interlacing through the 3rd draw-off godet, thread guide and interlacing jet nozzle, after coiling and molding, makes polyamide 6 POY/FDY tangling yarn.
2. the one-step preppn process of a kind of polyamide 6 POY/FDY tangling yarn according to claim 1, is characterized in that: the dry sliced intrinsic viscosity of polyamide 6 is 2.4dl/g～2.6dl/g, and section moisture content is 300ppm～500ppm.
3. the one-step preppn process of a kind of polyamide 6 POY/FDY tangling yarn according to claim 1, it is characterized in that: screw rod melt extrusion processes, adopt screw rod 6 to distinguish section melt extruded, the temperature of 6 grades of screw rods is followed successively by 250 ± 2 DEG C, 259 ± 2 DEG C, 262 ± 2 DEG C, 264 ± 2 DEG C, 266 ± 2 DEG C and 265 ± 2 DEG C; The temperature of being carried out spinning by the melt input spinning manifold of screw rod heating and melting is 260 ± 2 DEG C, and screw extruding head pressure is 155bar.
4. the one-step preppn process of a kind of polyamide 6 POY/FDY tangling yarn according to claim 1, it is characterized in that: cooling curing process using lateral blowing cooling curing, process conditions are: blast 650 ± 50Pa, wind speed 0.30m/s～0.60m/s, 19 DEG C ± 2 DEG C of wind-warm syndrome, humidity 90% ± 5%.
5. the one-step preppn process of a kind of polyamide 6 POY/FDY tangling yarn according to claim 1, it is characterized in that: the process conditions of polyamide 6 FDY fullly drawn yarn (FDY), the pre-network pressure of pre-Network device is 0.75 ± 0.05bar, the first drawing roller group speed is 3000m/min～3500m/min, the second drawing-off hot-rolling group speed is 3700m/min～4200m/min, and stretching, heat setting temperature are 130 DEG C～150 DEG C.
6. the one-step preppn process of a kind of polyamide 6 POY/FDY tangling yarn according to claim 1, it is characterized in that: the process conditions of polyamide 6 POY pre-oriented yarn, the first draw-off godet speed is 3500m/min～3900m/min, and second spinning reel speed is 3600m/min～4000m/min.
7. the one-step preppn process of a kind of polyamide 6 POY/FDY tangling yarn according to claim 1, it is characterized in that: the process conditions of compound interlacing, the network pressure of middle Network device is 2.0bar～2.5bar, the 3rd draw-off godet speed is 3615m/min～4015m/min, and thread guide and interlacing jet nozzle pressure are 3.0bar～4.0bar.
8. the one-step preppn process of a kind of polyamide 6 POY/FDY tangling yarn according to claim 1, is characterized in that: the process conditions of coiling and molding, winding speed is 3600m/min～4000m/min.
9. the polyamide 6 POY/FDY tangling yarn obtaining by claim 1 preparation method.
10. a kind of polyamide 6 POY/FDY tangling yarn according to claim 9, its specification is 110dtex～167dtex/48f～144f; Its fracture strength is 2.5cN/dtex～4.0cN/dtex, and elongation at break is 30%～55%, and network degree is 20～30/meter.
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| CN111636104A (en) * | 2020-05-27 | 2020-09-08 | 浙江恒优化纤有限公司 | Composite spinning equipment and composite spinning process |
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