CN105369376A - High-strength industrial HLMS terylene thread and processing equipment thereof - Google Patents
High-strength industrial HLMS terylene thread and processing equipment thereof Download PDFInfo
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- CN105369376A CN105369376A CN201510881715.7A CN201510881715A CN105369376A CN 105369376 A CN105369376 A CN 105369376A CN 201510881715 A CN201510881715 A CN 201510881715A CN 105369376 A CN105369376 A CN 105369376A
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Abstract
The invention relates to a high-strength industrial HLMS terylene thread and processing equipment thereof, and belongs to the special fiber technical field; the industrial HLMS terylene thread is the fiber formed by the following steps: spinning melt body, cooling, oiling, drawing-off heat setting, and coiling; the formed thread has breaking tenacity >=7.5N/dtex, fracture percentage elongation of 12+-2%, hot air shrinkage of 3+-1.0%, and oil content of 0.4+-0.2wt%. The high-strength industrial HLMS terylene thread is stable in spinning conditions, low in cooling energy consumption, high in yarn evenness, high in intensity, and stable in mechanical property.
Description
Technical field
The present invention relates to a kind of high-strength industrial HLMS terylene thread and process equipment thereof, belong to fibre processing technologies field.
Background technology
Industrial HLMS terylene thread is a kind of industrial yarn that modulus is high, shrinkage factor is low, and the key affecting its strength and extension property is spinning moulding, drawing and setting stage, namely gets off the stage to coiling and molding from spinning manifold.Tradition industrial HLMS terylene thread is in process, and its cooling adopts ring blowing, completes in the cooling forming of the fiber fixed space mainly between ring blowing and spinning shaft.Physical property standard about High Modulus And Low Shrinkage in GBT16604-2008 polyester industrial filament yarn is defined as: fracture strength >=6.6cN/dtex, Dimensional Stability Index (continuous rating elongation rate during load 4.0cN/dtex and 177 DEG C, dry-hot shrinkage sum under 0.05g/D, 10min condition)≤10.Compared with nylon industry filament, polyester industrial fiber has the features such as cost is low, initial modulus is high, chemical stability is good, weatherability, creep-resistant property are excellent, therefore, the industrial HLMS terylene thread that the high-strength that processability is excellent, Dimensional Stability Index are good, can expand the purposes of polyester material.
Based on this, make subject application.
Summary of the invention
In order to improve the fracture strength of existing industrial HLMS terylene thread, modulus and dimensional stability, increase the flexibility of High Modulus And Low Shrinkage spinning equipment simultaneously, to obtain the more stable polyester fiber of molecular structure, first the present invention there is provided the high-strength industrial HLMS terylene thread that a kind of intensity is high, dimensional stability is good.
For achieving the above object, the technical scheme taked of the present invention is as follows:
High-strength industrial HLMS terylene thread, this industrial HLMS terylene thread be melt through spinning, cool, oil, fiber that drawing and heat-setting and winding are formed, this fibrous fracture intensity >=7.2cN/dtex, elongation at break is 12 ± 2%, dry-hot shrinkage (test condition: 177 DEG C, 10 minutes, 0.05g/D) be 3 ± 1.0%, oil content is 0.4 ± 0.2wt%.
Further, as preferably:
The continuous rating elongation rate (4.0cN/dtex) of described high-strength industrial HLMS terylene thread is 5.5 ± 0.8%, Dimensional Stability Index≤8.5.
Internet pricing (EPM, the needle point method) >=4/m of described high-strength industrial HLMS terylene thread.
Another object of the application is to provide a kind of process equipment with above-mentioned feature high-strength industrial HLMS terylene thread simultaneously, comprise spinning manifold, post-heater, spinning shaft, oil-adding mechanism, drawing and heat-setting mechanism and winding mechanism, described post-heater is installed on hoistable platform, spinning shaft is positioned at below post-heater, fall into bottom hoistable platform driving post-heater or stretch out spinning shaft, to change spacing between the two, this spacing forms calm cooling zone.
Further, as preferably:
Described hoistable platform is provided with cylinder, and the expansion link of cylinder is connected with post-heater bottom, and air cylinder driven post-heater moves up and down.
Described calm cooling zone height is 10-30cm.More preferred, the height of described calm cooling zone is 10-20cm.
Be connected with waveform airduct under described spinning shaft, this waveform airduct and spinning shaft are integral type structure, and this waveform airduct and expansion link are fixed.
Described oil-adding mechanism is oil tanker or oiling roller.
Described drawing-off heat determines organization establishes six pair rollers, and the first pair roller is cold roller; Second pair roller is middle temperature roller, and its temperature is 95-110 DEG C; 3rd pair roller, the 4th pair roller and the 5th pair roller are high-temperature roller, and the temperature of the 3rd pair roller, the 4th pair roller and the 5th pair roller is 245-260 DEG C, and the 6th pair roller is time high-temperature roller, and temperature is between the second pair roller and the 3rd pair roller.
In described winding mechanism, its winding angle fluctuates between 6.5-7.2 °, and first increases and subtract afterwards.
Operation principle of the present invention is as follows:
Said method of the present invention is adopted to carry out the processing of high-strength industrial HLMS terylene thread, melt carries out spinning successively, rear heating, without air cooling, ring quenching, oil, drawing and heat-setting and winding: melt enters spinning manifold through the main import of melt, under biphenyl casing and post-heater insulation, send into after spinning head formation strand through measuring pump, calm cooling is naturally carried out in one section of calm wind area first between post-heater and spinning shaft, and then enter spinning shaft and carry out ring quenching, to be cooled half-formed after, oil tanker evenly oils to it, the complete strand that oils delivers to drawing and heat-setting place, first deliver to the second pair roller through the first pair roller, after second pair roller place carries out middle temperature preheating, deliver to the 3rd pair roller, 4th pair roller and the 5th pair roller, after completing high temperature drawing and heat-setting, deliver to the 6th pair roller again, after after pre-network processes, deliver to winding portion through winding head and complete the shaping of high-strength industrial HLMS terylene thread.
Beneficial effect of the present invention is as follows:
1) process equipment of the application is placed between rear heating and ring quenching by primarily innovating center of gravity, in process, Distance Shortened between not only rear heating and ring being dried, and add one section of calm cooling naturally, tow hardens gradually under natural windless condition, can ensure that good bar does uniformity.Then enter in ring quenching environment, strand internal structure tends towards stability, and there will not be skin-core structure again, causes the lousiness in posterior drawing process even to break end.Fracture strength >=the 7.2cN/dtex of its industrial HLMS terylene thread obtained, elongation at break is 12 ± 2%, dry-hot shrinkage is 3 ± 1.0%, oil content is 0.4 ± 0.2wt%, when it being carried out again the process such as follow-up drawing and heat-setting, because the dry shaping of its bar in early stage is good, fundamentally ensure that the uniformity of tensile deformation, physical and mechanical property is stablized.
2) the second innovative point of the present invention is that the calm natural cooled region height cool region that can ease up carries out adjustment of freely arranging in pairs or groups, to adapt to different operation atmosphere.In the application, the distance between rear heating and ring quenching is adjustable, and the zone length guaranteed without air cooling is in and can adjusts state flexibly, therefore, can according to the production status of reality, the distance after adjustment between heating and ring quenching, adjusts the degree without air cooling.
3) realize the processing of high strength type industrial HLMS terylene thread, be conducive to widening its Application Areas, increase the service life.Realization high-strength in the application is mainly realized by the cooperation of three aspects: spinning phase, control pressure before and after measuring pump, cooperatively interact without air cooling and ring quenching, melt extrusion is hardened gradually at calm cooling stage, then in the ring quenching stage, because bar does uniformity better, therefore, the wind regime in this stage can adjust in very large amplitude range, to meet the optimum Match of production capacity and fiber quality.In the application, oil and adopt oil tanker Cargo Oil roller to oil, after waiting to oil, through godet roller out article to do again in the second pair roller between warm preliminary draft and the 3rd pair roller to the 5th pair roller etc. high temperature predecessor focus shape and can realize the processing of high-strength industrial HLMS terylene thread, the relatively conventional industrial HLMS terylene thread of its intensity, can improve 10%.
The application is applied to the processing of high-strength industrial HLMS terylene thread, not only meets the best compatibility of stretching property by force, make intensity reach more than 7.2cN/dtex, can be applied and expand to band tyre cord fabric thread from the light-duty riding warp of routine.
Accompanying drawing explanation
Fig. 1 is the rearview of equipment overall structure of the present invention;
Fig. 2 is the side structure schematic diagram of equipment overall structure of the present invention.
Number in the figure: 1. main import; 2. measuring pump; 3. spinning manifold; 4. post-heater; 41. cylinders; 42. expansion links; 5. spinning shaft; 51. waveform airducts; 6. hoistable platform; 7. oil-adding mechanism; 8. drawing and heat-setting mechanism; 9. winding mechanism.
Detailed description of the invention embodiment 1: the processing of 1110dtex/320f high-strength industrial HLMS terylene thread is spun in section
The process equipment of the present embodiment high-strength industrial HLMS terylene thread, composition graphs 1 and Fig. 2, take section as raw material, intrinsic viscosity 1.06dl/g, its work flow is: spinning → rear heating → without the air cooling → ring quenching → → drawing and heat-setting that oils (middle temperature stretch → wait drawing by high temperature) → network → winding in advance.
(1) spinning phase:
1 district's temperature: 315 DEG C
2 district's temperature: 320 DEG C
3 district's temperature: 315 DEG C
4 district's temperature: 288.1 DEG C
5 district's temperature: 287.9 DEG C
6 district's temperature: 287.9 DEG C
Extruder gage outfit pressure: 149.6bar
Melt temperature: 294
Spinning body temperature: 299 DEG C
Measuring pump rotating speed: 10.2rpm
Discharge-amount: 591g/100ms
Filament spinning component: screen pack precision 20 μm, spinnerets 1mm*3mm/320f
Rear heating: 330 DEG C
(2) calm cooling stage: room temperature, calm; Zone length 10cm.
(3) the ring quenching stage:
Cooling adopts ring blowing: wind-warm syndrome 60 DEG C, relative humidity 55%, blast 1000Pa.
(4) fatliquoring stage:
Oil finish model: GXM-100; Finishing oil pump rotating speed 28rpm.
(5) stretching phase:
(6) winding portion:
Wherein, winding angle is specifically arranged see table 1.
Table 1 winding angle design parameter is arranged
| Start | 6.5° |
| Scope 1 | 6.7° |
| Scope 2 | 6.9° |
| Scope 3 | 7.0° |
| Scope 4 | 7.1° |
| Scope 5 | 7.0° |
| Scope 6 | 6.9° |
| Scope 7 | 6.7° |
| Scope 8 | 6.5° |
| Switch |
Draw ratio summary sheet in table 2 drawing-off winding process
| Middle temperature draw ratio | 3/4 roller: 1/2 roller | 1.35 |
| Etc. high-temperature hot draw ratio | 5/6 roller: 3/4 roller | 1.36 |
| Lax ratio | 11/12 roller: winding head | 1.49％ |
| Total drawing ratio | 9/10 roller: 1/2 roller | 1.83 |
Wherein, the first pair roller after 1/2 roller and drawing roller, 3/4 roller is the second pair roller, and 5/6 roller is the 3rd pair roller, and 11/12 roller is the 6th pair roller; Above-mentioned ratio is velocity ratio.
In above-mentioned process, melt enters spinning manifold 3 through the main import 1 of melt, under biphenyl casing and post-heater 4 are incubated, send into after spinning head formation strand through measuring pump 2, carry out in one section of calm wind area first between post-heater 4 and spinning shaft 5 calmly naturally cooling, and then enter spinning shaft 5 and carry out ring quenching, to be cooled half-formed after, oil-adding mechanism 7 (the present embodiment employing oil tanker) evenly oils to it, the complete strand that oils is delivered to place of drawing and heat-setting mechanism 8 and is carried out drawing and heat-setting, first deliver to the second pair roller through the first pair roller, after second pair roller place carries out middle temperature preheating, deliver to the 3rd pair roller, 4th pair roller and the 5th pair roller, after completing high temperature drawing and heat-setting, deliver to the 6th pair roller again, after after pre-network processes, through winding mechanism 9, place carries out winding portion, complete the shaping of high-strength industrial HLMS terylene thread.
Wherein, post-heater 4 lower end is connected with the expansion link 42 of cylinder 41, this cylinder 41 is fixed on hoistable platform 6 with expansion link 42, waveform airduct 51 is connected with below spinning shaft 5, and spinning shaft 5 and waveform airduct 51 are integrally fixed on expansion link 42, expansion link 42 drives bottom post-heater 4 to being lowered in spinning shaft 5, the length of calm cooling stage can be changed, thus the proportioning changed without air cooling and ring quenching, in this process, Distance Shortened between not only rear heating and ring being dried, and add one section of calm cooling naturally, this is for the direct melt extruded from spinning manifold, suitable avoids quenching without air cooling, the dry Surface hardened layer of the bar that rapid wet environment causes, melt hardens gradually under natural windless condition, be beneficial to the bar improving fiber and do uniformity, then enter again in ring quenching, enter the dry internal and external equilibrium of bar of ring quenching, now receive in ring quenching, just be easy to form the high strand of the uniformity, strand internal structure tends towards stability, avoid the formation of skin-core structure, fracture strength >=the 7.2cN/dtex of its industrial HLMS terylene thread obtained, elongation at break is 12 ± 2%, dry-hot shrinkage is 3 ± 1.0%, oil content is 0.4 ± 0.2wt%, when it being carried out again the process such as follow-up drawing and heat-setting, because the dry shaping of its bar in early stage is good, be conducive to posterior drawing type-approval process, physical and mechanical property is stablized.
Simultaneously, by the expansion link 41 of hoistable platform 6 with cylinder, distance between rear heating and ring quenching can be adjusted, the zone length guaranteed without air cooling is in and can adjusts state flexibly, therefore, can according to the production status of reality, the distance after adjustment between heating and ring quenching, adjusts the degree without air cooling.
Spinning phase, control pressure before and after measuring pump, cooperatively interact without air cooling and ring quenching, make melt extrusion in the internal tension of calm cooling stage and surface tension release as far as possible, then in the ring quenching stage, because bar does uniformity better, therefore, the wind regime in this stage can adjust in very large amplitude range, to meet the optimum Match of production capacity and fiber quality; Oil after to be cooled, finish is non-emulsified liquid, based on the filament spinning component characteristic that out bar is dry, must guarantee to oil evenly, in the application, oil and adopt oil tanker to oil, after waiting to oil, through godet roller out article to do again in the second pair roller between warm preliminary draft and the 3rd pair roller to the 5th pair roller etc. high temperature drawing and heat-setting can realize the processing of high-strength industrial HLMS terylene thread, the relatively conventional industrial HLMS terylene thread of its intensity, can improve 30-40%.
The product physical index of high-strength industrial HLMS terylene thread adopting the present embodiment to prepare can be joined and is shown in Table 3.
Table 3 the present embodiment product physical index summary sheet
| Fiber number (dtex) | 1115±17 |
| Fracture strength (cN/dtex) | 7.2±0.4 |
| Elongation at break (%) | 12.5±2 |
| Dry-hot shrinkage (%; 177 DEG C, 10min, 0.5g/D) | 3.0±1 |
| Oil content (wt%) | 0.4±0.2 |
| Internet pricing (needle point method, individual/m) | 4 |
The application is applied to the processing of high-strength industrial HLMS terylene thread, not only meets the best compatibility of stretching property by force, make intensity reach more than 7.2cN/dtex.Embodiment 2: the processing of 1670dtex/360f high-strength industrial HLMS terylene thread is spun in section
The present embodiment is identical with operation principle with the setting of embodiment 1, difference is: to cut into slices as raw material, intrinsic viscosity 1.06dl/g, its work flow is: spinning → rear heating → without the air cooling → ring quenching → → drawing and heat-setting that oils (middle temperature stretch → wait drawing by high temperature) → network → winding in advance.
(1) spinning phase:
1 district's temperature: 315 DEG C
2 district's temperature: 320 DEG C
3 district's temperature: 315 DEG C
4 district's temperature: 288.1 DEG C
5 district's temperature: 287.9 DEG C
6 district's temperature: 287.9 DEG C
Extruder gage outfit pressure: 135bar
Melt temperature: 294
Spinning body temperature: 299 DEG C
Measuring pump rotating speed: 15rpm
Discharge-amount: 650g/100ms
Filament spinning component: screen pack precision 25 μm, spinnerets 1*3/360
Rear heating: 300 DEG C
(2) calm cooling stage: room temperature, calm; Zone length 15cm.
(3) the ring quenching stage:
Cooling adopts ring blowing: wind-warm syndrome 50 DEG C, relative humidity 45%, blast 900Pa.
(4) fatliquoring stage:
Oil finish model: GXM-100; Finishing oil pump rotating speed 40rpm.
(5) stretching phase:
(6) winding portion:
Wherein, winding angle is specifically arranged see table 4.
Table 4 winding angle design parameter is arranged
| Start | 6.5° |
| Scope 1 | 6.8° |
| Scope 2 | 7.0° |
| Scope 3 | 7.2° |
| Scope 4 | 7.4° |
| Scope 5 | 7.3° |
| Scope 6 | 7.1° |
| Scope 7 | 6.7° |
| Scope 8 | 6.5° |
| Switch |
Draw ratio summary sheet in table 5 drawing-off winding process
| Middle temperature draw ratio | 3/4 roller: 1/2 roller | 1.35 |
| Etc. high-temperature hot draw ratio | 5/6 roller: 3/4 roller | 1.36 |
| Lax ratio | 11/12 roller: winding head | 1.49％ |
| Total drawing ratio | 9/10 roller: 1/2 roller | 1.83 |
Wherein, the first pair roller after 1/2 roller and drawing roller, 3/4 roller is the second pair roller, and 5/6 roller is the 3rd pair roller, and 11/12 roller is the 6th pair roller.
The product physical index of high-strength industrial HLMS terylene thread adopting the present embodiment to prepare can be joined and is shown in Table 6.
Table 6 the present embodiment product physical index summary sheet
| Fiber number (dtex) | 1670±25 |
| Fracture strength (cN/dtex) | 7.3±0.3 |
| Elongation at break (%) | 12.5±2 |
| Dry-hot shrinkage (%; 177 DEG C, 10min, 0.5g/D) | 2.5±1 |
| Oil content (wt%) | 0.4±0.2 |
| Internet pricing (needle point method, individual/m) | 4 |
The fracture strength of the high-strength industrial HLMS terylene thread prepared by the present embodiment increases, and dry-hot shrinkage can be reduced to about 2.5%.
Embodiment 3: the processing of 1440/480 high-strength industrial HLMS terylene thread is spun in section
The present embodiment is identical with operation principle with the setting of embodiment 1, difference is: to cut into slices as raw material, intrinsic viscosity 1.06dl/g, its work flow is: spinning → rear heating → without the air cooling → ring quenching → → drawing and heat-setting that oils (middle temperature stretch → wait drawing by high temperature) → network → winding in advance.
(1) spinning phase:
1 district's temperature: 315 DEG C
2 district's temperature: 320 DEG C
3 district's temperature: 315 DEG C
4 district's temperature: 288.1 DEG C
5 district's temperature: 287.9 DEG C
6 district's temperature: 287.9 DEG C
Extruder gage outfit pressure: 160bar
Melt temperature: 294
Spinning body temperature: 299 DEG C
Measuring pump rotating speed: 8rpm
Discharge-amount: 550g/100ms
Filament spinning component: screen pack precision 25 μm, spinnerets 1mm*3mm/480f
Rear heating: 350 DEG C
(2) calm cooling stage: room temperature, calm; Zone length 20cm.
(3) the ring quenching stage:
Cooling adopts ring blowing: wind-warm syndrome 75 DEG C, relative humidity 70%, blast 1500Pa.
(4) fatliquoring stage:
Oil finish model: GXM-100; Finishing oil pump rotating speed 25rpm.
(5) stretching phase:
(6) winding portion:
Wherein, winding angle is specifically arranged see table 7.
Table 7 winding angle design parameter is arranged
| Start | 7.0° |
| Scope 1 | 7.1° |
| Scope 2 | 7.2° |
| Scope 3 | 7.4° |
| Scope 4 | 7.5° |
| Scope 5 | 7.3° |
| Scope 6 | 7.2° |
| Scope 7 | 7.1° |
| Scope 8 | 7.0° |
| Switch |
Draw ratio summary sheet in table 8 drawing-off winding process
| Middle temperature draw ratio | 3/4 roller: 1/2 roller | 1.35 |
| Etc. high-temperature hot draw ratio | 5/6 roller: 3/4 roller | 1.36 |
| Lax ratio | 11/12 roller: winding head | 1.49％ |
| Total drawing ratio | 9/10 roller: 1/2 roller | 1.83 |
Wherein, the first pair roller after 1/2 roller and drawing roller, 3/4 roller is the second pair roller, and 5/6 roller is the 3rd pair roller, and 11/12 roller is the 6th pair roller.
The product physical index of high-strength industrial HLMS terylene thread adopting the present embodiment to prepare can be joined and is shown in Table 9.
Table 9 the present embodiment product physical index summary sheet
| Fiber number (dtex) | 1450±22 |
| Fracture strength (cN/dtex) | 7.5±0.4 |
| Elongation at break (%) | 12.5±2 |
| Dry-hot shrinkage (%; 177 DEG C, 10min, 0.5g/D) | 3.0±1 |
| Oil content (wt%) | 0.4±0.2 |
| Internet pricing (needle point method, individual/m) | 4 |
The wind regime of the high-strength industrial HLMS terylene thread prepared by the present embodiment is comparatively remarkable, and its ultimate strength can significantly improve and all can significantly improve with fracture strength.
Claims (10)
1. high-strength industrial HLMS terylene thread, it is characterized in that: this high-strength industrial HLMS terylene thread be melt through spinning, cool, oil, fiber that drawing and heat-setting and winding are formed, this fibrous fracture intensity >=7.2N/dtex, elongation at break is 12 ± 2%, dry-hot shrinkage is 3 ± 1.0%, and oil content is 0.4 ± 0.2wt%.
2. high-strength industrial HLMS terylene thread as claimed in claim 1, is characterized in that: the continuous rating elongation rate of described high-strength industrial HLMS terylene thread is 5.5 ± 0.8%.
3. high-strength industrial HLMS terylene thread as claimed in claim 1, is characterized in that: internet pricing >=4 of described high-strength industrial HLMS terylene thread/m.
4. high-strength industrial HLMS terylene thread as claimed in claim 1, it is characterized in that: the Dimensional Stability Index of described high-strength industrial HLMS terylene thread (continuous rating elongation rate during load 4.0cN/dtex and 177 DEG C, dry-hot shrinkage sum under 0.05g/D, 10min condition)≤8.5.
5. the process equipment of high-strength industrial HLMS terylene thread as claimed in claim 1, it is characterized in that: comprise spinning manifold, post-heater, spinning shaft, oil-adding mechanism, drawing and heat-setting mechanism and winding mechanism, described post-heater is installed on hoistable platform, spinning shaft is positioned at below post-heater, fall into bottom hoistable platform driving post-heater or stretch out spinning shaft, to change spacing between the two, this spacing forms calm cooling zone, and calm cooling zone height is 10-30cm.
6. the process equipment of high-strength industrial HLMS terylene thread as claimed in claim 5, it is characterized in that: described hoistable platform is provided with cylinder, the expansion link of cylinder is connected with post-heater bottom, and air cylinder driven post-heater moves up and down.
7. the process equipment of industrial HLMS terylene thread as claimed in claim 5, it is characterized in that: be connected with waveform airduct under described spinning shaft, this waveform airduct and spinning shaft are integral type structure, and this waveform airduct and expansion link are fixed.
8. the process equipment of high-strength industrial HLMS terylene thread as claimed in claim 5, is characterized in that: described oil-adding mechanism is oil tanker or oiling roller.
9. the process equipment of high-strength industrial HLMS terylene thread as claimed in claim 5, is characterized in that: described drawing-off heat determines organization establishes six pair rollers, and the first pair roller is cold roller; Second pair roller is middle temperature roller, and its temperature is 95-110 DEG C; 3rd pair roller, the 4th pair roller and the 5th pair roller are high-temperature roller, and the temperature of the 3rd pair roller, the 4th pair roller and the 5th pair roller is 245-260 DEG C, and the 6th pair roller is time high-temperature roller, and temperature is between the second pair roller and the 3rd pair roller.
10. the process equipment of high-strength industrial HLMS terylene thread as claimed in claim 5, it is characterized in that: in described winding mechanism, its winding angle fluctuates between 6.5-7.2 °, and first increases and subtract afterwards.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117512790A (en) * | 2024-01-08 | 2024-02-06 | 江苏恒力化纤股份有限公司 | Spinning method for reducing skin-core structure of polyester industrial yarn |
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| CN102797054A (en) * | 2012-09-03 | 2012-11-28 | 江苏恒力化纤股份有限公司 | Manufacturing method of high-strength, high-modulus and low-shrinkage polyester industrial yarn |
| CN102797055A (en) * | 2012-09-03 | 2012-11-28 | 江苏恒力化纤股份有限公司 | Manufacturing method for low-shrinkage high-strength PET industrial yarn |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117512790A (en) * | 2024-01-08 | 2024-02-06 | 江苏恒力化纤股份有限公司 | Spinning method for reducing skin-core structure of polyester industrial yarn |
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| CN105369376B (en) | 2018-03-13 |
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Effective date of registration: 20180605 Address after: 312000 2 Wang Hai Road, Doumen Town, Doumen, Shaoxing, Zhejiang Patentee after: ZHEJIANG GUQIANDAO GREEN FIBER CO., LTD. Address before: 312000 2 Yue Dong Road, Shaoxing, Zhejiang Province Co-patentee before: ZHEJIANG GUQIANDAO GREEN FIBER CO., LTD. Patentee before: Zhejiang Guxiandao Industrial Fiber Co., Ltd. |