CN102505177B - Method for preparing mixed regenerated polyester fibers special for non-woven material - Google Patents
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- CN102505177B CN102505177B CN201110353587.0A CN201110353587A CN102505177B CN 102505177 B CN102505177 B CN 102505177B CN 201110353587 A CN201110353587 A CN 201110353587A CN 102505177 B CN102505177 B CN 102505177B
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- 239000000835 fiber Substances 0.000 title claims abstract description 100
- 239000000463 material Substances 0.000 title claims abstract description 63
- 229920000728 polyester Polymers 0.000 title claims abstract description 24
- 238000000034 method Methods 0.000 title abstract description 20
- 238000009987 spinning Methods 0.000 claims abstract description 74
- 238000002074 melt spinning Methods 0.000 claims abstract description 21
- 239000000126 substance Substances 0.000 claims abstract description 10
- 238000001035 drying Methods 0.000 claims abstract description 9
- 239000002783 friction material Substances 0.000 claims abstract description 9
- 238000009998 heat setting Methods 0.000 claims abstract description 9
- 238000002156 mixing Methods 0.000 claims abstract description 8
- 238000002360 preparation method Methods 0.000 claims description 17
- 239000003795 chemical substances by application Substances 0.000 claims description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 239000006261 foam material Substances 0.000 claims description 8
- 239000000654 additive Substances 0.000 claims description 5
- 230000000996 additive effect Effects 0.000 claims description 5
- 239000006081 fluorescent whitening agent Substances 0.000 claims description 5
- 239000013502 plastic waste Substances 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 10
- 239000002994 raw material Substances 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 3
- CNGYZEMWVAWWOB-VAWYXSNFSA-N 5-[[4-anilino-6-[bis(2-hydroxyethyl)amino]-1,3,5-triazin-2-yl]amino]-2-[(e)-2-[4-[[4-anilino-6-[bis(2-hydroxyethyl)amino]-1,3,5-triazin-2-yl]amino]-2-sulfophenyl]ethenyl]benzenesulfonic acid Chemical compound N=1C(NC=2C=C(C(\C=C\C=3C(=CC(NC=4N=C(N=C(NC=5C=CC=CC=5)N=4)N(CCO)CCO)=CC=3)S(O)(=O)=O)=CC=2)S(O)(=O)=O)=NC(N(CCO)CCO)=NC=1NC1=CC=CC=C1 CNGYZEMWVAWWOB-VAWYXSNFSA-N 0.000 abstract 1
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- 239000005020 polyethylene terephthalate Substances 0.000 description 11
- 229920000139 polyethylene terephthalate Polymers 0.000 description 8
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- 239000000203 mixture Substances 0.000 description 6
- 229920000742 Cotton Polymers 0.000 description 3
- 229920004933 Terylene® Polymers 0.000 description 3
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- 229920000297 Rayon Polymers 0.000 description 1
- 238000007380 fibre production Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 239000012943 hotmelt Substances 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
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Abstract
The invention discloses a method for preparing mixed regenerated polyester fibers special for a non-woven material. The method comprises the following steps of: mixing spinning raw materials such as bottle flakes, a chemical fiber friction material, a bubble material and a fluorescent brightener, drying by using a vacuum drum dryer, and performing melt spinning to obtain as-spun fibers with two or more kinds of fineness through two or more spinning box bodies of melt spinning equipment; winding, doffing and bundling the as-spun fibers in turn; drawing in an oil bath, drawing in steam, and reeling; and performing heat setting to prepare the mixed regenerated polyester fibers special for the non-woven material. Compared with the prior art, the method has the advantages that: the fibers produced by the method have two or more kinds of fineness, the raw materials are stably proportioned and uniformly mixed, the non-woven material can have good opening and mixing effects, and the technical index of the non-woven material can be effectively improved. The mixed fibers can be used for producing different styles of non-woven materials, work efficiency is improved, and production cost is reduced.
Description
[technical field]
The present invention relates to non-woven field, be specifically related to the preparation method of mixed regenerated polyester fibers special for non-woven material.
[background technology]
Nonwoven material is different from traditional textile, and it is the fiber assembly directly consisting of fibrous raw material.But not in the fibrous raw material that Weaving Industry is used, the proportion of chemical fibre is increasing, has accounted for approximately 90%, mainly comprises terylene, polypropylene fibre, polyamide fibre, viscose glue, hot-melt fiber etc.According to the use function of nonwoven material, select different fiber numbers, different length, different crimpness, different cross section shape, the fiber matched combined of different surfaces proterties, mutual supplement with each other's advantages, can play beyond thought effect.The method of often using is to adopt the collocation of different fibrous raw materials to use, or the material matching use of the different fiber numbers of fiber of the same race, to promote performance, quality and the price of nonwoven material.The nearly all product of current non-woven industry is all to adopt the production of arranging in pairs or groups of above two kinds of modes.The development of composite fibre and technical development, greatly promoted the product up-gradation of nonwoven material, patent ZL96193989.3 discloses a kind of conjugate fiber nonwoven fabric and uses thereof, patent ZL95117161.5 discloses the manufacture method of composite fibre nonwoven cloth, and United States Patent (USP) 20100191207 discloses numerous patents about nonwoven material manufacture method such as a kind of nonwoven material and manufacture method thereof, and all to adopt composite fibre be raw material.But the mixed material of the different fiber numbers of fiber of the same race is used less, be mainly used in polymer and directly become net method nonwoven material, United States Patent (USP) 20100086745 discloses a kind of Comoposite spunbonded nonwoven material, patent 200880106893.0 discloses a kind of blended fiber and supatex fabric prepared therefrom, be all to adopt the spinning of many casings, mix method into the net.Yet, be applied to the rare exploitation of blended fiber of production dry method, wet method nonwoven material, feed cotton process employing and manually weigh and mix, improved on the one hand hand labor intensity, on the other hand manual mixed cotton's lack of homogeneity.In blended fiber preparation process, owing to being the fiber of two kinds of fineness of mixing by a certain percentage, compare common terylene production technology and spinnerets specification, two spun precursor of casing cannot obtain abundant drawing-off, cause the fibre strength at relatively thick dawn low large with elongation, technical indicator does not reach regenerated polyester fiber industry standard.
[summary of the invention]
The object of the present invention is to provide a kind of preparation method of mixed regenerated polyester fibers special for non-woven material, it can improve the uniformity that non-woven raw fiber proportioning is mixed, and improves product quality.
For achieving the above object, the present invention adopts following technical scheme:
A preparation method for mixed regenerated polyester fibers special for non-woven material, spinning material adopts 79.98wt%-99.98wt% bottle sheet, 0wt%-20wt% chemical fibre friction material, 0wt%-20wt% foam material and 200ppm fluorescent whitening agent; After this spinning material mixing is dried by vacuum drum drier, feed again the screw extruder of apparatus for melt spinning, carry out melt spinning, through the spinning manifold of two or more apparatus for melt spinning, obtain the as-spun fibre of two kinds or two or more fiber numbers, again this as-spun fibre is reeled successively, is fallen silk, boundling, through oil bath drawing-off, steam drafting and curling, finally carry out HEAT SETTING again, make mixed regenerated polyester fibers special for non-woven material.
Described bottle sheet is technics of reclaim of plastic waste material, and its intrinsic viscosity is 0.60-0.80dl/g, and fusing point is 255-260 ℃, PVC content < 0.04wt%.
Described chemical fibre friction material and foam material are technics of reclaim of plastic waste material, and its intrinsic viscosity is 0.50-0.65dl/g, and fusing point is 250-265 ℃, PVC content < 0.04wt%.
The baking temperature of described vacuum drum drier is about 150 ℃, and steam pressure is about 5.5kg, be about-0.098Mpa of vacuum, and dry 9-11h left and right, to described spinning material moisture < 150PPM.
The speed of described melt spinning is 1200-1300m/min, spinning temperature is controlled at 260-285 ℃, the measuring pump rotating speed of apparatus for melt spinning and spinnerets model need to be adjusted according to the fiber number of blended fiber and mixed proportion, make the cold drawing-off multiplying power of as-spun fibre of different fiber numbers consistent.
Described coiling, oil formula used is 2000 kilograms, 3-5 kilograms of 3-5 kilograms of tow smooth agents, softener and water, silk, boundling then fall.
The drafting multiple of described oil bath drawing-off is 3.3-3.6, and temperature is 70-75 ℃, and oil formula used is 18-20kg tow smooth agent, 50-80kg softener, 15-25kg antistatic additive, 8-12kg hydrophilizing agent and 2000 kg of water; The drafting multiple of described steam drafting is 1.12-1.14, and temperature is 100-110 ℃.
Described HEAT SETTING is undertaken by relaxation heat setting baking oven, and relaxation heat setting baking oven divides 5 thermals treatment zone, and temperature is controlled and is 105-180 ℃, and be 40-50min drying time.
Adopt after such scheme, a kind of non-woven special-purpose preparation method who mixes terylene regeneration fiber of the present invention, its advantage is:
1, the fiber of producing by the inventive method is two or more fiber number, and proportioning is stable and mix, and makes with this procedure of fibre production nonwoven material shredding, mixed effect out splendidly, has effectively improved the technical indicator of nonwoven material.
2, prepared fiber can be produced the nonwoven material of different-style as requested, is that single Denier fiber is beyond one's reach.
3, due to the characteristic of nonwoven material, it produces the plurality of specifications fibers that adopt more, and method adopts the mixed cotton of manually weighing, and the fiber that uses the inventive method to make can save above production link, increases work efficiency, and reduces production costs.
[accompanying drawing explanation]
Fig. 1 is the process chart of one embodiment of the invention;
Fig. 2 is the process chart of another embodiment of the present invention.
[specific embodiment]
Below in conjunction with embodiment, the preparation method of a kind of mixed regenerated polyester fibers special for non-woven material of the present invention is elaborated:
Embodiment mono-:
As shown in Figure 1, the preparation method of a kind of mixed regenerated polyester fibers special for non-woven material of the present invention, realizes as follows:
1, spinning material is selected 2399.52 kilograms of waste PET bottle sheets and 0.48 kilogram of fluorescent whitening agent; Wherein waste PET bottle sheet fusing point is 256 ℃, and viscosity is 0.65dl/g, and PVC content is 0.034%.
2, will after above-mentioned spinning material blend evenly, join in rotary-drum vacuum machine and be dried, by be made as-0.098Mpa of the vacuum of rotary-drum vacuum machine, steam pressure is made as 5.4kg, and baking temperature is made as 150 ℃, dry 10h, the moisture that makes waste PET bottle sheet is 132ppm.
3, by above-mentioned dried spinning material, the screw extruder of feeding apparatus for melt spinning, the spinning manifold by apparatus for melt spinning carries out melt spinning.In the present embodiment, adopt two spinning manifolds (1# spinning manifold and 2# spinning manifold) to carry out spinning, 1# spinning manifold spinnerets specification is 2400 holes; 2# spinning manifold spinnerets specification is 1800 holes.Described 1# spinning manifold screw extruder seven district's temperature are made as respectively 262 ℃, 268 ℃, 285 ℃, 280 ℃, 280 ℃, 270 ℃, 270 ℃, and drop temperature is made as 275 ℃; 2# spinning manifold screw extruder seven district's temperature are made as respectively 265 ℃, 270 ℃, 275 ℃, 280 ℃, 280 ℃, 275 ℃, 270 ℃, and drop temperature is made as 270 ℃.High temperature makes the solid-state spinning material mixing become melt, and the filament spinning component through spinning manifold, is spun into as-spun fibre.Wherein, 1# spinning manifold measuring pump rotating speed is made as 28r/min, and spinning speed is made as 1300m/min; 2# spinning manifold measuring pump rotating speed is made as 27.5r/min, and spinning speed is made as 1300m/min.
4, the as-spun fibre of step 3 gained is reeled, coiling oil supply is 2000 kilograms, 4 kilograms of tow smooth agents, 4 kilograms of softeners and water, and silk, boundling then fall.
5, again the as-spun fibre of processing through step 4 is carried out to drawing-off, a drawing-off is oil bath drawing-off, drafting multiple is made as 3.32, and temperature is made as 73 ℃, and finish is 20kg tow smooth agent, 60kg softener, 20kg antistatic additive, 10kg hydrophilizing agent and 2000 kg of water; Secondary drawing-off is steam drafting, and drafting multiple is made as 1.13, and temperature is made as 108 ℃.
6, the fiber after step 5 drawing-off is processed is batched and drying and shaping, 5 thermals treatment zone, it is 105 ℃, 115 ℃, 145 ℃, 145 ℃, 120 ℃ that temperature is controlled successively, is about 45min drying time.Dried fiber is again through cutting off, pack processing.
The mixed regenerated polyester fibers special for non-woven material that the present embodiment is produced comprises 2D, 3D fiber, and mixed proportion is 3:2.
Embodiment bis-:
As shown in Figure 1, the preparation method of a kind of mixed regenerated polyester fibers special for non-woven material of the present invention, realizes as follows:
1, spinning material is selected 1919.52 kilograms of waste PET bottle sheets, 240 kilograms of chemical fibre friction material, 240 kilograms of foam materials and 0.48 kilogram of fluorescent whitening agent.Wherein waste PET bottle sheet fusing point is 256 ℃, and viscosity is 0.68dl/g, and PVC content is 0.035%; Chemical fibre friction material fusing point is 250 ℃, and intrinsic viscosity is 0.55dl/g, and PVC content is 0.034%; Foam material fusing point is 255 ℃, and intrinsic viscosity is 0.62dl/g, and PVC content is 0.036%;
2, above-mentioned spinning material blend is evenly joined in rotary-drum vacuum machine and is dried, vacuum is made as-0.098Mpa, steam pressure is made as 5.5kg, and baking temperature is made as 150 ℃, dry 10.5h, and making waste PET bottle sheet moisture is 125ppm.
3, by above-mentioned dried spinning material, the screw extruder of feeding apparatus for melt spinning, the spinning manifold by apparatus for melt spinning carries out melt spinning.In the present embodiment, adopt two spinning manifolds (1# spinning manifold and 2# spinning manifold) to carry out spinning, 1# spinning manifold spinnerets specification is 2400 holes; 2# spinning manifold spinnerets specification is 960 holes.1# spinning manifold screw extruder seven district's temperature are set to respectively 265 ℃, 269 ℃, 275 ℃, 280 ℃, 280 ℃, 275 ℃, 275 ℃, and drop temperature is set to 265 ℃; 2# spinning manifold screw extruder seven district's temperature are set to respectively 265 ℃, 270 ℃, 275 ℃, 285 ℃, 285 ℃, 275 ℃, 275 ℃, and drop temperature is set to 270 ℃.High temperature makes the solid-state spinning material mixing become melt, and the filament spinning component through spinning manifold, is spun into as-spun fibre.Wherein, 1# spinning manifold measuring pump rotating speed is made as 28r/min, and spinning speed is made as 1250m/min; 2# spinning manifold measuring pump rotating speed is made as 26r/min, and spinning speed is made as 1250m/min.
4, the as-spun fibre of step 3 gained is reeled, coiling oil supply is 2000 kilograms, 4.2 kilograms of tow smooth agents, 3.8 kilograms of softeners and water, and silk, boundling then fall.
5, again the as-spun fibre of processing through step 4 is carried out to drawing-off, a drawing-off is oil bath drawing-off, and drafting multiple is made as 3.54, and temperature is made as 75 ℃, and finish is 18kg tow smooth agent, 64kg softener, 18kg antistatic additive, 9kg hydrophilizing agent and 2000 kg of water; Secondary drawing-off is steam drafting, and drafting multiple is made as 1.12, and temperature is made as 106 ℃.
6, the fiber through drawing-off is batched and drying and shaping, 5 thermals treatment zone, it is 105 ℃, 125 ℃, 165 ℃, 150 ℃, 120 ℃ that temperature is controlled successively, be 42min drying time.Dried fiber is again through cutting off, pack processing.
The mixed regenerated polyester fibers special for non-woven material that the present embodiment is produced comprises 2.5D, 6D fiber, and mixed proportion is 7:3.
Embodiment tri-:
As shown in Figure 2, the preparation method of a kind of mixed regenerated polyester fibers special for non-woven material of the present invention, realizes as follows:
1, spinning material is selected 1919.52 kilograms of waste PET bottle sheets, 480 kilograms of chemical fibres friction material or foam material and 0.48 kilogram of fluorescent whitening agent; Wherein waste PET bottle sheet fusing point is 254 ℃, and viscosity is 0.66dl/g, and PVC content is 0.032%; Chemical fibre friction material fusing point is 250 ℃, and intrinsic viscosity is 0.55dl/g, and PVC content is 0.034%; Foam material fusing point is 255 ℃, and intrinsic viscosity is 0.62dl/g, and PVC content is 0.036%.
2, above-mentioned spinning material blend is evenly joined in rotary-drum vacuum machine and is dried, vacuum is made as-0.098Mpa, steam pressure is made as 5.6kg, and baking temperature is made as 150 ℃, dry 10.2h, and bottle sheet moisture is 108ppm.
3, by above-mentioned dried spinning material, the screw extruder of feeding apparatus for melt spinning, the spinning manifold by apparatus for melt spinning carries out melt spinning.In the present embodiment, adopt three spinning manifolds (1# spinning manifold, 2# spinning manifold and 3# spinning manifold) to carry out spinning, 1# spinning manifold spinnerets specification is 3024 holes; 2# spinning manifold spinnerets specification is 2400 holes; 3# spinning manifold spinnerets specification is 1800 holes.1# spinning manifold screw extruder seven district's temperature are made as respectively 260 ℃, 275 ℃, 272 ℃, 278 ℃, 280 ℃, 280 ℃, 275 ℃, and drop temperature is made as 270 ℃; 2# spinning manifold screw extruder seven district's temperature are made as respectively 265 ℃, 268 ℃, 275 ℃, 285 ℃, 280 ℃, 280 ℃, 275 ℃, and drop temperature is made as 275 ℃; 3# spinning manifold screw extruder seven district's temperature are made as respectively 260 ℃, 270 ℃, 275 ℃, 280 ℃, 280 ℃, 275 ℃, 270 ℃, and drop temperature is made as 270 ℃.High temperature makes the solid-state spinning material mixing become melt, and the filament spinning component through spinning manifold, is spun into as-spun fibre.Wherein, 1# spinning manifold measuring pump rotating speed is made as 28r/min, and spinning speed is made as 1300m/min; 2# spinning manifold measuring pump rotating speed is made as 27r/min, and spinning speed is made as 1300m/min.3# spinning manifold measuring pump rotating speed is made as 28r/min, and spinning speed is made as 1300m/min.
4, the as-spun fibre of step 3 gained is reeled, the oil formula used of reeling is 2000 kilograms, 4.2 kilograms of tow smooth agents, 3.8 kilograms of softeners and water, and silk, boundling then fall.
5, again the as-spun fibre of processing through step 4 is carried out to drawing-off, a drawing-off is oil bath drawing-off, drafting multiple is made as 3.50, and temperature is made as 72 ℃, and oil bath oil formula used is 21kg tow smooth agent, 56kg softener, 24kg antistatic additive, 8kg hydrophilizing agent and 2000 kg of water; Secondary drawing-off is steam drafting, and drafting multiple is made as 1.12, and temperature is made as 105 ℃.
6, the fiber through drawing-off is batched and drying and shaping, 5 thermals treatment zone, it is 108 ℃, 120 ℃, 145 ℃, 145 ℃, 115 ℃ that temperature is controlled successively, is about 46min drying time.Dried fiber is again through cutting off, pack processing.
The mixed regenerated polyester fibers special for non-woven material that the present embodiment is produced comprises 1.5D, 2.5D, 3.5D fiber, and mixed proportion is 1:1:1.
The present invention just sets forth the production method with the blended fiber of the different fiber numbers of component, and the application principle of the invention is prepared the blended fiber of the different fiber numbers of different component also in protection scope of the present invention.
Claims (7)
1. a preparation method for mixed regenerated polyester fibers special for non-woven material, is characterized in that: spinning material adopts 79.98wt%-99.98wt% bottle sheet, 0wt%-20wt% chemical fibre friction material, 0wt%-20wt% foam material and 200ppm fluorescent whitening agent; After this spinning material mixing is dried by vacuum drum drier, feed again the screw extruder of apparatus for melt spinning, carry out melt spinning, through the spinning manifold of two or more apparatus for melt spinning, obtain the as-spun fibre of two kinds or two or more fiber numbers, again this as-spun fibre is reeled successively, is fallen silk, boundling, through oil bath drawing-off, steam drafting and curling, finally carry out HEAT SETTING again, make mixed regenerated polyester fibers special for non-woven material.
2. the preparation method of a kind of mixed regenerated polyester fibers special for non-woven material according to claim 1, it is characterized in that: described bottle sheet is technics of reclaim of plastic waste material, its intrinsic viscosity is 0.60-0.80dl/g, and fusing point is 255-260 ℃, PVC content < 0.04wt%.
3. the preparation method of a kind of mixed regenerated polyester fibers special for non-woven material according to claim 1, it is characterized in that: described chemical fibre friction material and foam material are technics of reclaim of plastic waste material, its intrinsic viscosity is 0.50-0.65dl/g, fusing point is 250-265 ℃, PVC content < 0.04wt%.
4. the preparation method of a kind of mixed regenerated polyester fibers special for non-woven material according to claim 1, it is characterized in that: the speed of described melt spinning is 1200-1300m/min, spinning temperature is controlled at 260-285 ℃, the measuring pump rotating speed of apparatus for melt spinning and spinnerets model need to be adjusted according to the fiber number of blended fiber and mixed proportion, make the cold drawing-off multiplying power of as-spun fibre of different fiber numbers consistent.
5. the preparation method of a kind of mixed regenerated polyester fibers special for non-woven material according to claim 1, it is characterized in that: described coiling, oil formula used is 2000 kilograms, 3-5 kilograms of 3-5 kilograms of tow smooth agents, softener and water, and silk, boundling then fall.
6. the preparation method of a kind of mixed regenerated polyester fibers special for non-woven material according to claim 1, it is characterized in that: the drafting multiple of described oil bath drawing-off is 3.3-3.6, temperature is 70-75 ℃, and oil formula used is 18-20kg tow smooth agent, 50-80kg softener, 15-25kg antistatic additive, 8-12kg hydrophilizing agent and 2000 kg of water; The drafting multiple of described steam drafting is 1.12-1.14, and temperature is 100-110 ℃.
7. the preparation method of a kind of mixed regenerated polyester fibers special for non-woven material according to claim 1, it is characterized in that: described HEAT SETTING is undertaken by relaxation heat setting baking oven, relaxation heat setting baking oven divides 5 thermals treatment zone, and temperature is controlled and is 105-180 ℃, and be 40-50min drying time.
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| CN102850732B (en) * | 2012-09-27 | 2015-01-28 | 安徽南澳地毯有限公司 | Toner adding process |
| CN104358030A (en) * | 2014-12-09 | 2015-02-18 | 湖南中核无纺有限公司 | Coarse-denier high-strength spun-bonded non-woven fabrics and preparation method thereof |
| CN104389036B (en) * | 2014-12-16 | 2017-01-11 | 江苏省科学技术情报研究所 | Preparation method of six-leaf porous hollow staple fibers spun from renewable polyester bottle flakes |
| CN104911748A (en) * | 2015-06-02 | 2015-09-16 | 龙福环能科技股份有限公司 | Method for industrial production of polyester filament yarn by using polyester waste yarn |
| CN105297498A (en) * | 2015-10-29 | 2016-02-03 | 安徽省腾越铝塑有限公司 | High-toughness mooring rope for steamship |
| CN105442081A (en) * | 2015-12-28 | 2016-03-30 | 常熟市翔鹰特纤有限公司 | Production process of regenerable anti-static polyester staple fiber |
| CN105463617A (en) * | 2015-12-28 | 2016-04-06 | 常熟市翔鹰特纤有限公司 | Regenerated anti-static polyester fiber |
| CN105525375A (en) * | 2016-02-22 | 2016-04-27 | 苏州金泉新材料股份有限公司 | Method for preparing polyester staple fibers from waste polyester fibers |
| CN105887232A (en) * | 2016-06-27 | 2016-08-24 | 福建鑫华股份有限公司 | Method for preparing special black polyester short fiber for wire harness material |
| CN106283231B (en) * | 2016-08-15 | 2019-08-13 | 宁波大发化纤有限公司 | A kind of method for shaping of core-sheath low-melting fiber |
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| CN101054732A (en) * | 2007-06-08 | 2007-10-17 | 陈泉锋 | Method for producing high-strength low-extension type short fiber by reclaimed polyester bottle slice |
| CN101328636B (en) * | 2008-07-25 | 2011-06-22 | 上海太平洋纺织机械成套设备有限公司 | Polyester staple fiber postprocessing process of flexible production process |
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