CN1296531C - Extruding fusion method for low-fusing point polyester and preparing method for low-fusing point polyester composite fibre - Google Patents
Extruding fusion method for low-fusing point polyester and preparing method for low-fusing point polyester composite fibre Download PDFInfo
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- CN1296531C CN1296531C CNB03112237XA CN03112237A CN1296531C CN 1296531 C CN1296531 C CN 1296531C CN B03112237X A CNB03112237X A CN B03112237XA CN 03112237 A CN03112237 A CN 03112237A CN 1296531 C CN1296531 C CN 1296531C
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- point polyester
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Abstract
The present invention discloses a extrusive melting method for polyester with low melting point, and a method for manufacturing polyester composite fibers with low melting point on the basis of the extrusive melting method. A polyester wet chip (LMPET) is not under crystallizing and drying and is directly blown into a hopper, vacuum is pumped to the hopper by a vacuum pumping system, the chip is sent to a screw extruder of the polyester with low melting point to heat and melt, and water molecule and other impurities are discharged from a vacuum suction system when the chip is melted. The polyester fusant with low melting point, which is extruded by the extruder, and conventional terylene polyester (PET) fusant extruded by a screw extruder of conventional terylene polyester are respectively induced into composite spinning assemblies through equilong distributing pipelines, and the two kinds of fusant with different components are mixed in the assemblies according to a certain proportion under accurate measurement by a metering pump and supercharging. Inner core phases (PET) are evenly coated in skin phases and are sprayed out from a spinneret plate to form the polyester composite fibers with low melting point. The present invention is a technology for manufacturing polyester composite fibers with low melting point by an extruder attached with a vacuum pumping device, and greatly improves the traditional fiber spinning technology.
Description
Technical field
The invention belongs to chemical fibre terylene processing technique field, particularly a kind of extrusion molten method of low-melting point polyester and the manufacture method of composite fibre thereof.
Background technology
Low melting point polyester fiber is a main raw material of producing nonwoven fabric fabrics such as no collodion, spinning cotton, and it possesses excellent physical and mechanical properties and environmental protection effectiveness are arranged, and does not domesticly still have a matured product in present stage, almost all depends on import.The production method of the low-melting point polyester composite fibre of prior art is direct melt direct spinning with low-melting point polyester, but these direct fabrics are unfavorable for changing product category according to market demand, and production capacity must reach a certain amount ofly, under the changeable situation in market, can not adapt to the elastic demand in market; Can't use slice spinning at low-melting point polyester in the past,, can't be dried with traditional method for crystallising, therefore all adopt Direct Spinning in the past to moisture 30ppm because the low melting point polyester chip crystallization rate is slow.
Summary of the invention
The objective of the invention is to overcome the deficiency of prior art, provide viscosity after a kind of extrusion molten method of low-melting point polyester and the low melting point polyester chip fusion to fall manufacture method at the low-melting point polyester composite fibre of 0.002-0.006dl/g scope.
The technical solution adopted for the present invention to solve the technical problems is: a kind of extrusion molten method of low-melting point polyester, it is the low-melting point polyester screw extruder directly to be sent in the wet section of the low-melting point polyester under the vacuum state (LMPET) carry out heating and melting, section fusion the time by impurity such as vacuum pick-up system discharge water molecules, melt after the extruding is by temperature measurer monitoring display melt temperature, guarantee that temperature at 140-190 ℃, is pressurized to 80～140kg/cm through booster pump
2
The extrusion molten method of aforesaid a kind of low-melting point polyester, wherein said screw extruder are divided into five thermals treatment zone, and temperature is made as 140-190 ℃.
The extrusion molten method of aforesaid a kind of low-melting point polyester, wherein under the vacuum state the wet section of polyester (LMPET) in low-melting point polyester screw extruder extrusion molten by impurity such as vacuum pick-up system discharge water molecules, the vacuum of melting zone is 2-15mbar in the screw rod, and the vacuum in the wet section of polyester (LMPET) hopper is 0.5-5.0mbar.
The extrusion molten method of aforesaid a kind of low-melting point polyester, wherein the melting range of the wet section of polyester (LMPET) is 105～130 ℃, viscosity decline 0.002-0.006dl/g after the screw extruder extrusion molten vacuumizes.
A kind of manufacture method of the low-melting point polyester composite fibre based on aforementioned low-melting point polyester extrusion molten method, be to make the low-melting point polyester composite fibre with the extruder of attached vacuum extractor, it is that low-melting point polyester and conventional polyester polyester are extruded by extruder separately, enter composite spining module by isometric distribution duct respectively, under the accurate measurement and pressurization of measuring pump, the melt of two kinds of components mixes with certain proportion in assembly, inner core phase (PET) evenly is coated in skin-deep (LMPET), and sprays from spinnerets.
The manufacture method of aforesaid a kind of low-melting point polyester composite fibre, wherein said low-melting point polyester melt need be pressurized to 80～140kg/cm through booster pump earlier when the low-melting point polyester extruder is extruded
2, filter the back by filter then and be assigned in 6 composite spining modules in the casing by 6 isometric low-melting point polyester melt distributing pipes.
The manufacture method of aforesaid a kind of low-melting point polyester composite fibre, wherein said low-melting point polyester melt and conventional polyester polyester fondant are respectively under the accurate measurement and pressurization of measuring pump separately, the melt of two kinds of components mixes with certain proportion in assembly, inner core phase (PET) evenly is coated in skin-deep (LMPET), and sprays from spinnerets.
The manufacture method of aforesaid a kind of low-melting point polyester composite fibre, wherein, low-melting point polyester measuring pump pump is for amount 300-400g/min, its rotating speed 20～30r/min.
The manufacture method of aforesaid a kind of low-melting point polyester composite fibre, wherein, the fusing point of low-melting point polyester is 105-130 ℃, and the fusing point of dacron polyester is 256～261 ℃, and the extrusion capability of low melting point screw extruder is 35kg/h-1.5T/h.
In actual process, the equipment that is adopted comprises: hopper, low-melting point polyester screw extruder, hopper vacuum aspirator, screw rod vacuum aspirator, booster pump, filter, low-melting point polyester melt distributing pipe, conventional polyester polyester screw extruder, conventional polyester polyester fondant distributing pipe, casing, low-melting point polyester measuring pump, conventional polyester polyester measuring pump, assembly etc.
Its process is, the wet section of polyester (LMPET) is blown into hopper, the attached pumped vacuum systems of hopper, low-melting point polyester screw extruder heating and melting is directly sent in section under the vacuum state, screw rod is divided into five thermals treatment zone, temperature is 140-190 ℃, low melting point screw rod extrusion capability is 35kg/h-1.5T/h, section fusion the time by impurity such as vacuum pick-up system discharge water molecules, its vacuum pressure is 2-15mbar, melt after the extruding guarantees that by temperature measurer monitoring display melt temperature temperature at 140-190 ℃, is pressurized to 80～140kg/cm through booster pump
2, filtering the back by filter and be assigned in 6 composite spining modules in the casing by 6 isometric low-melting point polyester melt distributing pipes, extra large sand 0.5-1kg packs in the composite spining module; Simultaneously dry good polyester slice (PET) enters conventional polyester polyester screw extruder heating and melting, screw rod is divided into five thermals treatment zone, temperature is 270～300 ℃, melt after the extruding is by temperature measurer monitoring display melt temperature, guarantee temperature at 270～300 ℃, filter the back by filter and be assigned in 6 composite spining modules in the casing by 6 isometric conventional polyester polyester fondant distributing pipes; Two kinds of components are respectively under the accurate measurement and pressurization of low-melting point polyester measuring pump and conventional polyester polyester measuring pump, in assembly, mix with certain proportion, inner core phase (PET) evenly is coated in skin-deep (LMPET), and from spinnerets, spray, low-melting point polyester measuring pump pump is for amount 300～400g/min, conventional polyester polyester measuring pump pump is for amount 700-900g/min, rotating speed 20～30r/min.
The invention has the beneficial effects as follows, owing to adopted and the low-melting point polyester screw extruder is directly sent in the wet section of the polyester of vacuum state (LMPET) carried out heating and melting, the section fusion in by impurity such as vacuum pick-up system discharge water molecules, melt after the extruding is by temperature measurer monitoring display melt temperature, guarantee that temperature at 140-190 ℃, is pressurized to 80～140kg/cm through booster pump
2Make the wet section of polyester (LMPET) need not through the crystallizing and drying machine, directly by the screw extruder spinning, spinning process is serialization production, the automaticity height, equipment flowsheet is short, floor space is little, overcome that reach about 40-50 hour drying time in the traditional crystallization drying process of wet section (LMPET), and the dry mass instability, influenced the shortcoming of normal spinning; The present invention is the technology that a kind of extruder with attached vacuum extractor is made the low-melting point polyester composite fibre, is the major improvement to traditional spinning technique.
Description of drawings
Below in conjunction with drawings and Examples the present invention is described in further detail, but the manufacture method of the extrusion molten method of a kind of low-melting point polyester of the present invention and low-melting point polyester composite fibre is not limited to embodiment.
Fig. 1 is the extrusion molten method of low-melting point polyester and the manufacture method of low-melting point polyester composite fibre.
Symbol description among the figure: 1 hopper; 2 hopper vacuum aspirators; 3 screw rod vacuum aspirators; 4 low-melting point polyester screw extruders; 5 booster pumps; 6 filters; 7 low-melting point polyester melt distributing pipes; 8 casings; 9 conventional polyester polyester screw extruders; 10 conventional polyester polyester fondant distributing pipes; 11 low-melting point polyester measuring pumps; 12 conventional polyester polyester measuring pumps; 13 assemblies.
The specific embodiment
Introduce the extrusion molten method of low-melting point polyester below in conjunction with test data
Describe the manufacture method of low-melting point polyester composite fibre in detail below in conjunction with Fig. 1;
The equipment that is adopted comprises: hopper 1, hopper vacuum aspirator 2, screw rod vacuum aspirator 3, low-melting point polyester screw extruder 4, booster pump 5, filter 6, low-melting point polyester melt distributing pipe 7, casing 8, conventional polyester polyester screw extruder 9, conventional polyester polyester fondant distributing pipe 10, low-melting point polyester measuring pump 11, conventional polyester polyester measuring pump 12, assembly 13 etc.
Its process is: earlier the wet section of polyester (LMPET) is blown into hopper 1, the attached vacuum aspirator 2 of hopper, low-melting point polyester screw extruder 4 heating and meltings are directly sent in the wet section (LMPET) of vacuum state (0.5-5mbar), the screw rod of low-melting point polyester screw extruder 4 is divided into five thermals treatment zone, temperature is 140-190 ℃, low melting point screw rod extrusion capability is 35kg/h-1.5T/h, section fusion the time by impurity such as screw rod vacuum aspirator 3 discharge water molecules, its vacuum pressure is 2-15mbar, melt after the extruding is by temperature measurer monitoring display melt temperature, guarantee that temperature is at 140-190 ℃, viscosity is reduced to 0.002-0.006dl/g, is pressurized to 80～140kg/cm through booster pump 5
2, filtering the back by filter 6 and be assigned in 6 composite spining modules 13 in the casing 8 by 6 isometric low-melting point polyester melt distributing pipes 7, extra large sand 0.5-1kg packs in the composite spining module 13; Simultaneously dry good polyester slice (PET) enters conventional polyester polyester screw extruder 9 heating and meltings, the screw rod of conventional polyester polyester screw extruder 9 is divided into five thermals treatment zone, temperature is 270～300 ℃, melt after the extruding is by temperature measurer monitoring display melt temperature, guarantee temperature at 270～300 ℃, filter the back by filter 6 and be assigned in 6 composite spining modules 13 in the casing 8 by 6 isometric conventional polyester polyester fondant distributing pipes 10; Two kinds of melts are respectively under the accurate measurement and pressurization of measuring pump 11,12, in assembly 13, mix with certain proportion, inner core phase (PET) evenly is coated in skin-deep (LMPET), and from spinnerets, spray, conventional polyester polyester measuring pump 12 pumps are for amount 700～900g/min, low-melting point polyester measuring pump 11 pumps are for amount 300-400g/min, rotating speed 20～30r/min.
Claims (4)
1. the extrusion molten method of a low-melting point polyester, it is characterized in that: the wet section of polyester (LMPET) is sucked hopper with the hopper vacuum aspirator, the low-melting point polyester screw extruder is directly sent in the wet section of polyester (LMPET) of vacuum state carried out heating and melting, section fusion the time by impurity such as vacuum pick-up system discharge water molecules, melt after the extruding is by temperature measurer monitoring display melt temperature, guarantee that temperature at 140-190 ℃, is pressurized to 80～140kg/cm through booster pump
2Vacuum is 2-15mbar in the described screw rod, and hopper vacuum is 0.5-5mbar; 105～130 ℃ of the melting ranges of the wet section of described polyester (LMPET), the viscosity depreciation is 0.002-0.006dl/g after screw rod machine extrusion molten vacuumizes.
2. the manufacture method of the composite fibre of the extrusion molten method of a low-melting point polyester as claimed in claim 1, it is characterized in that: be to make the low-melting point polyester composite fibre with the extruder of attached vacuum extractor, it is that low-melting point polyester and conventional polyester polyester are extruded by extruder separately, enter composite spining module by isometric distribution duct respectively, under the accurate measurement and pressurization of measuring pump, the melt of two kinds of components mixes with certain proportion in assembly, inner core phase (PET) evenly is coated in skin-deep (LMPET), and sprays from spinnerets.
3. the manufacture method of composite fibre according to claim 2 is characterized in that: described low-melting point polyester melt needs be pressurized to 80～140kg/cm through booster pump earlier when the low-melting point polyester extruder is extruded
2, filter the back by filter then and be assigned in 6 composite spining modules in the casing by 6 isometric low-melting point polyester melt distributing pipes.
4. the manufacture method of low-melting point polyester composite fibre according to claim 2, it is characterized in that: the fusing point of low-melting point polyester is 105-130 ℃, the fusing point of dacron polyester is 256～261 ℃, and the extrusion capability of low melting point screw extruder is 35kg/h-1.5T/h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB03112237XA CN1296531C (en) | 2003-05-30 | 2003-05-30 | Extruding fusion method for low-fusing point polyester and preparing method for low-fusing point polyester composite fibre |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB03112237XA CN1296531C (en) | 2003-05-30 | 2003-05-30 | Extruding fusion method for low-fusing point polyester and preparing method for low-fusing point polyester composite fibre |
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| Publication Number | Publication Date |
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| CN1552961A CN1552961A (en) | 2004-12-08 |
| CN1296531C true CN1296531C (en) | 2007-01-24 |
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| CNB03112237XA Expired - Lifetime CN1296531C (en) | 2003-05-30 | 2003-05-30 | Extruding fusion method for low-fusing point polyester and preparing method for low-fusing point polyester composite fibre |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1962716B (en) * | 2005-11-11 | 2010-05-12 | 厦门翔鹭化纤股份有限公司 | Low-melting point polyester synthesis method |
| CN101856874B (en) * | 2010-06-03 | 2013-01-02 | 浙江富源再生资源有限公司 | Method for producing fiber grade polyester chip with waste pure polyester garments |
| CN101928997B (en) * | 2010-07-08 | 2012-06-06 | 张家港欣阳化纤有限公司 | Method for preparing double-row circular blowing fine denier lustrous special polyester drawn yarns |
| CN102453966B (en) * | 2011-05-23 | 2012-11-07 | 殷晃德 | Process for spinning low-melting-point heat bonding polyester filaments |
| CN104073894A (en) * | 2014-07-01 | 2014-10-01 | 武汉纺织大学 | Efficient and short-process multi-component melt spinning device |
| CN106435767B (en) * | 2014-08-26 | 2018-08-21 | 诸暨市新丝维纤维有限公司 | A kind of Multi-function chemical product preparation process |
| CN107988633B (en) * | 2017-12-26 | 2020-08-07 | 普宁鑫盛印刷包装有限公司 | Fiber manufacturing device and process |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02139412A (en) * | 1988-11-16 | 1990-05-29 | Toray Ind Inc | Adhesive polyester conjugate fiber for sewing thread |
| JPH11181254A (en) * | 1997-12-24 | 1999-07-06 | Mitsubishi Kagaku Polyester Film Kk | Production of polyester composition |
| CN1344820A (en) * | 2001-11-19 | 2002-04-17 | 慈溪市大成经营公司 | Production process of polyester/polyester composite hot-melt short fiber |
| CN1382844A (en) * | 2002-06-05 | 2002-12-04 | 赵军 | Technology for spinning superfine islands-in-sea bicomponent fibre |
| CN1384227A (en) * | 2002-05-20 | 2002-12-11 | 辽阳天利海岛纤维有限公司 | Drying process for Haidao superfine composite fiber slice |
| CN1399012A (en) * | 2002-06-07 | 2003-02-26 | 辽阳天利海岛纤维有限公司 | Production process of superfine composite fiber |
| CN2540269Y (en) * | 2002-05-20 | 2003-03-19 | 辽阳天利海岛纤维有限公司 | Low melting point polyester slice pre-crystallization device |
-
2003
- 2003-05-30 CN CNB03112237XA patent/CN1296531C/en not_active Expired - Lifetime
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02139412A (en) * | 1988-11-16 | 1990-05-29 | Toray Ind Inc | Adhesive polyester conjugate fiber for sewing thread |
| JPH11181254A (en) * | 1997-12-24 | 1999-07-06 | Mitsubishi Kagaku Polyester Film Kk | Production of polyester composition |
| CN1344820A (en) * | 2001-11-19 | 2002-04-17 | 慈溪市大成经营公司 | Production process of polyester/polyester composite hot-melt short fiber |
| CN1384227A (en) * | 2002-05-20 | 2002-12-11 | 辽阳天利海岛纤维有限公司 | Drying process for Haidao superfine composite fiber slice |
| CN2540269Y (en) * | 2002-05-20 | 2003-03-19 | 辽阳天利海岛纤维有限公司 | Low melting point polyester slice pre-crystallization device |
| CN1382844A (en) * | 2002-06-05 | 2002-12-04 | 赵军 | Technology for spinning superfine islands-in-sea bicomponent fibre |
| CN1399012A (en) * | 2002-06-07 | 2003-02-26 | 辽阳天利海岛纤维有限公司 | Production process of superfine composite fiber |
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| CN1552961A (en) | 2004-12-08 |
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