CN104032390A - High-hollowness Dacron FDY (fully drawn yarn) filament and manufacturing method thereof - Google Patents
High-hollowness Dacron FDY (fully drawn yarn) filament and manufacturing method thereof Download PDFInfo
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- CN104032390A CN104032390A CN201410262044.1A CN201410262044A CN104032390A CN 104032390 A CN104032390 A CN 104032390A CN 201410262044 A CN201410262044 A CN 201410262044A CN 104032390 A CN104032390 A CN 104032390A
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Abstract
The invention discloses a high-hollowness Dacron FDY (fully drawn yarn) filament and a manufacturing method thereof. The manufacturing method includes metering PET (polyester) melt, then extruding through a spinneret plate, cooling, applying oil, drafting and winding. The spinneret plate is composed of six arc narrow slits which are identical and concentric and uniformly distributed circumferentially, and 12-48 holes are uniformly distributed in a single ring. The hollowness of the high-hollowness Dacron FDY filament is larger than or equal to 35%, the degree of hollowness and completeness and uniformity of a hollow section can be kept to the greatest extent, and post processing performance of fibers are taken into account. The high-hollowness Dacron DFY filament is mainly used as a carrier for physiotherapy medicine in the prior art, that is by the aid of high-hollowness filler, the function of physiotherapy and disease-prevention health care is realized on fabric.
Description
Technical field
The invention belongs to Direct-spinning of PET Fiber technical field, particularly a kind of high hollow polyester FDY long filament and preparation method thereof.
Background technology
Along with the high speed development of market economy and improving constantly of people's living standard, people are to the requirement of dress and personal adornment except having function warming, attractive in appearance, and comfortable and health is more and more concerned.How can not destroy on the basis of polyster fibre premium properties, develop, produce high degree of hollowness, there is again the polyester filament of high-quality stability simultaneously, meet to a certain extent the requirement of people to high-grade fabric, decoration materials and auxiliary material and togs fabric, be the direction that polyester filament is paid close attention to always.
PET Hollow fiber is from Development and Production success, the up till now history of existing more than 20 year.Conventionally doughnut product be mainly used in that family is spun, cold-proof underwear, gum sprayed cotton, without industries such as collodion, Fake Furs, sofa, toys.The degree of hollowness of this class doughnut is many in 25% left and right.Along with the day by day emphasis of people to health care product, PET Hollow fiber, also from the role of " filler ", changes the carrier of filler into, becomes the role of " being filled ".So the degree of hollowness to doughnut and quality stability have just proposed high request, it is 30% even higher that degree of hollowness is greater than, and just can satisfy the demand.Therefore, market is in the urgent need to releasing the polyester filament of high degree of hollowness, and this has also filled up the blank of China's PET industry at high hollow product.
Summary of the invention
Due to the problems referred to above of prior art existence, the object of the invention is to propose a kind of high hollow polyester FDY long filament and preparation method thereof, a kind of polyester FDY long filament of degree of hollowness >=35% and the preparation method of one-step method are particularly provided, to promote the added value of polyster fibre, meet the market demand of hollow polyester filament as filling carrier.
For achieving the above object, the present invention is achieved by the following technical programs:
A preparation method for high hollow polyester FDY long filament, comprise after polyester fondant metering through spinnerets extrude, cooling, oil, drawing-off and coiling step be made, the inherent viscosity of described polyester fondant is 0.635～0.649, spinning temperature is 286～292 DEG C; The spinneret orifice of described spinnerets, is made up of six sections of circumference uniform distribution identical and concentric circular arc narrow slits, and takes monocycle 12～48 holes to be uniformly distributed arrangement; Degree of hollowness >=35% of obtained high hollow polyester FDY long filament.
Further, circular arc slit width of the present invention is 0.06～0.10mm, and the spacing of adjacent circular arc narrow slit is 0.1 ± 0.01mm; Described cooling employing ring blowing, blast 35～55Pa, 18.5～20.5 ° of C of wind-warm syndrome, rheumatism 70～90%; The drafting multiple of described drawing-off is 2.6～2.9 times; The precision of described circular arc slit width is ± 0.01mm that the Hole Wall Roughness of described circular arc narrow slit is Rz0.8.
The present invention also proposes the high hollow polyester FDY of the one long filament making by above method, its degree of hollowness >=35%; The specification of high hollow polyester FDY long filament is 30～150D/12～48f, fracture strength > 3.8cN/dtex.
Owing to adopting above technical scheme, the polyester FDY long filament of preparing by preparation method of the present invention, has and is greater than 35% degree of hollowness and higher quality stability, has filled up the blank of China's PET industry at high hollow product; And preparation method of the present invention is uniform and stable as basis taking polyester fondant quality, ring quenching condition is prerequisite uniformly, in keeping the high degree of hollowness of fiber and low cross section fraction defective, ensure the good physical property such as fracture strength, extension at break of fiber.
Brief description of the drawings
Fig. 1 is spinneret orifice enlarged diagram of the present invention
Fig. 2 is that spinneret orifice of the present invention is arranged schematic diagram
Detailed description of the invention
Below in conjunction with detailed description of the invention, further set forth the present invention.Should be understood that these embodiment are only not used in and limit the scope of the invention for the present invention is described.In addition should be understood that those skilled in the art can make various changes or modifications the present invention after having read the content of the present invention's instruction, these equivalent form of values fall within the application's appended claims limited range equally.
The preparation method of a kind of high hollow polyester FDY long filament of the present invention, comprise after polyester (PET) melt-stoichiometry through spinnerets extrude, cooling, oil, the step such as drawing-off and coiling, the inherent viscosity of melt is 0.635～0.649, and spinning temperature is 286～292 DEG C; As shown in Figure 1, 2, the spinneret orifice of spinnerets, is made up of six sections of circumference uniform distribution identical and concentric circular arc narrow slits, and takes monocycle 12～48 holes to be uniformly distributed arrangement, circular arc slit width is 0.06～0.10mm, and the spacing of adjacent circular arc narrow slit is 0.1 ± 0.01mm.
For obtaining the doughnut of high-quality and high degree of hollowness, spinnerets is critical component very, for example: design, the arrangement etc. in hole, spinnerets is the key of producing satisfactory doughnut, in the middle of prior art generally adopts, be solid, two " semicircles " or " C " type hole, after when spinning, the polyester fondant high pressure of high viscosity is extruded, in the process of formation as-spun fibre, the expanded fibre wall that makes of melt bonds mutually, and rapidly cooling curing forms hollow, make and take doughnut through drawing-off and HEAT SETTING, be designed at most 3 " C ".The present invention, in the design of spinneret orifice, has adopted 6 " C " (six sections of identical and concentric circular arc narrow slits of circumference uniform distribution form), takes monocycle 12～48 holes to be uniformly distributed.Such design is mated, and greatly considers the mobility of melt, and strand is extruded the uniformity of cooler environment, has ensured the maximum degree of hollowness of fiber and inhomogeneity realization.
The production of hollow polyester fiber requires very strict to the control of melt temperature, the height of spinning temperature directly affects rheological property and the relative molecular mass of melt, has determined mobile performance and the surface tension of melt.Spinning temperature is high, and melt viscosity is little, and after melt goes out spinneret orifice, expanded phenomenon reduces greatly, and melt thread produces surperficial atrophy, and cavity part is diminished, and the degree of hollowness of fiber reduces; Spinning temperature is low, and melt viscosity is large, and melt-forming resistance and surface tension are large, is conducive to the formation of hollow.But spinning temperature is too low, melt viscosity is relatively large, and melt is in the closure difficulty of spinneret orifice opening part, be difficult to form hollow, and producing hardhead silk, filament, spinning temperature is controlled at 286～292 DEG C by the present invention, can make well behaved high hollow polyester FDY long filament.
In the present invention, described cooling employing ring blowing, blast 35～55Pa, 18.5～20.5 DEG C of wind-warm syndrome, rheumatism 70～90%, the process conditions of cooling forming, for the rheological behavior of spinning melt thread in journey, as the physical parameters such as elongational flow viscosity, tensile stress have a significant impact, after as-spun fibre hollow forms, fast cooling shaping need be in blowing window, carried out, higher degree of hollowness and roundness could be kept.
The as-spun fibre of harsh one-tenth, because fibrous inside has hole, its fibre wall is thin, in drawing process, easily break and rupture, cause broken end and lousiness, draw ratio is too low, drawing-off deficiency, easily cause undrafting wire and stiff silk, the intensity of fiber is low, and residual elongation is excessive, and boiling water shrinkage is high, uneven dyeing, product is without serviceability.Drafting multiple is too high, easily makes as-spun fibre and breaks and rupture, and causes broken end and lousiness, causes production to carry out.Experimental results show that: drafting multiple was at 2.6～2.9 o'clock, and the machining property of doughnut meets user's needs completely.
And in the present invention, the precision of circular arc slit width is ± 0.01mm that the Hole Wall Roughness of circular arc narrow slit is Rz0.8.
The high hollow polyester FDY of the one long filament making by above method, its degree of hollowness >=35%; The specification of high hollow polyester FDY long filament is 30～150D/12～48f, fracture strength > 3.8cN/dtex.
Embodiment 1
A preparation method for high hollow polyester FDY long filament, comprise after polyester fondant metering through spinnerets extrude, cooling, oil, drawing-off and coiling step be made, the inherent viscosity of polyester fondant is 0.641, spinning temperature is 286 DEG C; The spinneret orifice of spinnerets, is made up of six sections of circumference uniform distribution identical and concentric circular arc narrow slits, and takes monocycle 24 holes to be uniformly distributed arrangement.
In the present embodiment, circular arc slit width is 0.06mm, and the spacing of adjacent circular arc narrow slit is 0.09mm; Cooling employing ring blowing, blast 40Pa, 20.2 DEG C of wind-warm syndrome, rheumatism 79.1%; The drafting multiple of drawing-off is 2.6 times; The precision of circular arc slit width is ± 0.01mm that the Hole Wall Roughness of circular arc narrow slit is Rz0.8.
The high hollow polyester FDY of the one long filament making by above method, its degree of hollowness 35.3%; The specification of high hollow polyester FDY long filament is 144dtex/48f, and fracture strength is 4.09cN/dtex.
Embodiment 2
A preparation method for high hollow polyester FDY long filament, comprise after polyester fondant metering through spinnerets extrude, cooling, oil, drawing-off and coiling step be made, the inherent viscosity of described polyester fondant is 0.640, spinning temperature is 290 DEG C; The spinneret orifice of spinnerets, is made up of six sections of circumference uniform distribution identical and concentric circular arc narrow slits, and takes monocycle 24 holes to be uniformly distributed arrangement.
Further, circular arc slit width of the present invention is 0.08mm, and the spacing of adjacent circular arc narrow slit is 0.11mm; Cooling employing ring blowing, blast 38Pa, 19.5 DEG C of wind-warm syndrome, rheumatism 80%; The drafting multiple of drawing-off is 2.8 times; The precision of circular arc slit width is ± 0.01mm that the Hole Wall Roughness of described circular arc narrow slit is Rz0.8.
The high hollow polyester FDY of the one long filament making by above method, its degree of hollowness 36.8%; The specification of high hollow polyester FDY long filament is 111dtex/24f, and fracture strength is 4.2cN/dtex.
Claims (9)
1. the preparation method of one kind high hollow polyester FDY long filament, comprise after polyester fondant metering through spinnerets extrude, cooling, oil, drawing-off and coiling step be made, it is characterized in that: the inherent viscosity of described polyester fondant is 0.635～0.649, spinning temperature is 286～292 DEG C; The spinneret orifice of described spinnerets, is made up of six sections of circumference uniform distribution identical and concentric circular arc narrow slits, and takes monocycle 12～48 holes to be uniformly distributed arrangement; Degree of hollowness >=35% of obtained high hollow polyester FDY long filament.
2. preparation method according to claim 1, is characterized in that: described circular arc slit width is 0.06～0.10mm, and the spacing of adjacent circular arc narrow slit is 0.1 ± 0.01mm.
3. preparation method according to claim 1, is characterized in that: described cooling employing ring blowing, blast 35～55Pa, 18.5～20.5 DEG C of wind-warm syndrome, rheumatism 70～90%.
4. preparation method according to claim 1, is characterized in that: the drafting multiple of described drawing-off is 2.6～2.9 times.
5. preparation method according to claim 1, is characterized in that: the precision of described circular arc slit width is ± 0.01mm.
6. preparation method according to claim 1, is characterized in that: the Hole Wall Roughness of described circular arc narrow slit is Rz0.8.
7. the high hollow polyester FDY of the one long filament making according to any one in above claim 1-6.
8. high hollow polyester FDY long filament according to claim 7, is characterized in that: degree of hollowness >=35% of described high hollow polyester FDY long filament.
9. high hollow polyester FDY long filament according to claim 8, is characterized in that: the specification of described high hollow polyester FDY long filament is 30～150D/12～48f, fracture strength > 3.8cN/dtex.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410262044.1A CN104032390A (en) | 2014-06-13 | 2014-06-13 | High-hollowness Dacron FDY (fully drawn yarn) filament and manufacturing method thereof |
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| CN201410262044.1A CN104032390A (en) | 2014-06-13 | 2014-06-13 | High-hollowness Dacron FDY (fully drawn yarn) filament and manufacturing method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105220251A (en) * | 2015-09-30 | 2016-01-06 | 江苏江南高纤股份有限公司 | The production method of thin dawn hollow core staple fibers |
| CN108998843A (en) * | 2018-09-18 | 2018-12-14 | 江苏德力化纤有限公司 | A kind of hollow polyester FDY preparation methods |
| CN111647966A (en) * | 2020-06-11 | 2020-09-11 | 太仓逸枫化纤有限公司 | High-hollowness polyester filament fiber and preparation method thereof |
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| CN2642795Y (en) * | 2003-08-29 | 2004-09-22 | 上海第十化学纤维厂 | Fine-denier round hollow polyester staple fiber |
| CN1743515A (en) * | 2005-09-19 | 2006-03-08 | 上海联吉合纤有限公司 | Dacron thin-denier high-hollow short fiber and its production method |
| CN101418475A (en) * | 2008-12-08 | 2009-04-29 | 周峰亭 | Production method of colored hollow flame-retardant polyester staple fiber |
| CN202809029U (en) * | 2012-05-23 | 2013-03-20 | 上海德福伦化纤有限公司 | Spinneret plate with three-C-shaped spinneret hole |
| CN202881466U (en) * | 2012-10-31 | 2013-04-17 | 宁波大发化纤有限公司 | High-viscosity melt spinning spinneret plate |
| CN103668613A (en) * | 2012-09-12 | 2014-03-26 | 东丽纤维研究所（中国）有限公司 | Hollow false-twisting processed yarn, production method and woven fabric |
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Patent Citations (6)
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| CN2642795Y (en) * | 2003-08-29 | 2004-09-22 | 上海第十化学纤维厂 | Fine-denier round hollow polyester staple fiber |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105220251A (en) * | 2015-09-30 | 2016-01-06 | 江苏江南高纤股份有限公司 | The production method of thin dawn hollow core staple fibers |
| CN105220251B (en) * | 2015-09-30 | 2017-10-13 | 江苏江南高纤股份有限公司 | The production method of fine-denier hollow core staple fibers |
| CN108998843A (en) * | 2018-09-18 | 2018-12-14 | 江苏德力化纤有限公司 | A kind of hollow polyester FDY preparation methods |
| CN111647966A (en) * | 2020-06-11 | 2020-09-11 | 太仓逸枫化纤有限公司 | High-hollowness polyester filament fiber and preparation method thereof |
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Application publication date: 20140910 |
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