CN1644771A - Production for of melting point polyester short staple - Google Patents
Production for of melting point polyester short staple Download PDFInfo
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- CN1644771A CN1644771A CN 200410072878 CN200410072878A CN1644771A CN 1644771 A CN1644771 A CN 1644771A CN 200410072878 CN200410072878 CN 200410072878 CN 200410072878 A CN200410072878 A CN 200410072878A CN 1644771 A CN1644771 A CN 1644771A
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- melting point
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- point polyester
- temperature
- production method
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Abstract
A process for preparing the polyster staple fibres with low fusing point (120-130 deg.C) includes such steps as low-temp vacuum drying of polyester chips, fusing, spinning, winding, bundling, drafting three times, hot tension-setting curling, hot shrink-setting, cutting and opening.
Description
Technical field
The present invention relates to a kind of production method of low-melting point polyester staple fiber, particularly relate to the production method that a kind of fusing point is 120-130 ℃ a low-melting point polyester staple fiber.
Background technology
The production non-weaving cloth that appears as of low-melting fiber (also being called hot sticky and fiber) provides a method easily, the method that non-weaving cloth and heat-bondable fiber is bonding has replaced the disagreeableness water accack of environment, the nonwoven fabric bonding with heat-bondable fiber, its production cost is low, and the method for making the goods with uniqueness or premium properties is provided.
Polyolefin once was widely used in the heat-bondable fiber of non-weaving cloth because its fusing point is low.Because fiber fusing point low excessively (as polyethylene), dry cleaning resistance is poor, and bonding not enough with other fiber, thereby its Application Areas is restricted, and most polyolefin are used for manufacturing and do not reclaim product.
Polypropylene fibre is low owing to cost, light weight, and the intensity height, corrosion-resistant, the wear-resisting main raw material that waits premium properties to become the hot rolling non-weaving cloth, but normal polypropylene heat bonding temperature height (common 180 ℃), not easy dyeing, and feel hardens, and is not too welcome.
What hot sticky in recent years and fiber applications was wider is bi-component or multicomponent fibre, world developed country the seventies just begins the bi-component composite spinning is studied, a Krona company is taken by the eighties such as Denmark, Japan Chisso Corporation (JP) 6-32, Nakanoshima 3-chome, Kitaku, Osaka, Japan adopts high density polyethylene (HDPE) respectively, linear low density polyethylene (LLDPE) and polypropylene composite bicomponent synthetic continuous fibre and PP/PE bi-component composite short fiber, be applied to hygienic absorption non-weaving cloth and cotton for wadding binding material, domestic at the nineties initial stage, it is compound to develop PA/PET by the Shanghai Synthetic Fibre Inst, PA6/PA66, compound production improved low-melting point composite fibre such as PP/PE.It is mainly used in caking property non-weaving cloth and flocculus field.
In the known technology, application number: 94112010.4 " manufacture methods of improved low-melting point composite fibre ", disclosed is the method for designing of low melting point high polymer, has given the high polymer better spinnability; Fiber fracture morphology to eccentric structure designs; Be that cortex adds the proportioning of polyethylene, butadiene and styrene blend; The spinning moulding condition; The adjustment of composite spinning equipment spinneret component etc.
Also has application number: 89103050.6 " long-fiber of thermal bonding two-component synthesis and produce the method for absorbent material with this fiber ".Disclosed is that core segment adopts polyolefin or polyester, and outer skin portion is a polyolefin, and the fusing point of core segment is higher than outer skin portion, and the outer skin portion adding surfactant at this fiber makes it to have permanent hydrophilic.
The present invention compares with above-mentioned prior art, the novelty of its technology and technology, creativeness, practicality, be to be different from low-melting fiber production composite algorithm production technology commonly used, raw materials for production are single low melting point modified poly ester, need not do any change to existing spinning equipment, can on conventional polyester staple fiber spinning equipment, produce.In addition, because raw material is single, effectively hot sticky and composition effective hot sticky and composition in the core-skin type composite low melting point staple fibre in the low melting point staple fibre of explained hereafter of the present invention, the product consumption is few, and is sticking and effective, production method of the present invention operates steadily, excellent product quality, the low-melting point polyester staple fiber of production can be used for producing non-weaving cloth, weaving/industrial yarn and fabric, composite etc., of many uses.
Summary of the invention
The production method that the purpose of this invention is to provide a kind of low-melting point polyester staple fiber because raw material of the present invention is fusing point 120-130 ℃ a low-melting point polyester, so has three places obviously to be different from the conventional polyester spinning technique in the technological design.At first chip drying will adopt the long-time technology of vacuum drum low temperature; Corresponding reduction is wanted in the setting that screw rod was respectively distinguished temperature when next melt extruded; Drawing temperature and heat setting temperature will be controlled meticulously in the last spinning after-processing technology, prevent the fiber softening adhesion.To be described in detail the present invention by specific embodiment below.
The specific embodiment
By raw material drying, preceding spin part and after spin part and narrate respectively:
(1) chip drying part:
Fusing point is that 120-130 ℃ low melting point polyester chip needs through the vacuum drum drying, and baking temperature is 60-65 ℃, and the time is 24 hours, and vacuum is-0.1Mpa.
(2) the preceding part of spinning:
1. the pre-crystallizer temperature of drying system is 70 ℃, 30 ℃ of filling drying machine temperature, the machine that blows in circulation.
2. spinnerets adopts 1453 (0.3*0.6), fills out the extra large sand of 800 grams in the assembly, 250 ℃ of preheat temperatures, 20 hours time.Pump spins fast 970m/min for amount 1010g/min position, 24 ℃ of ring blowings, 480Pa.
3. screw rod is respectively distinguished temperature: 195 ℃ in a district, 235 ℃ in two districts, 250 ℃ in three districts, 275 ℃ in four districts, 275 ℃ in five districts, 265 ℃ of heads, 248 ℃ of casings.
(3) spin part after:
1. preceding spin semi-finished product silk 20-30 bucket and enter the boundling tension bracket, 600,000 dawn of total denier.
2. the boundling silk at first passes through the drawing-off groove, is II drawing machine and III drawing machine then, and drawing temperature is respectively: 55 ℃/60 ℃/65 ℃.Because boundling silk fusing point is low, be prone to the roll banding phenomenon, so tow do not go up nervous roller, only pass through between the upper and lower roll, nervous roller steam pressure drops to 0.1/0.2Mpa, and roll surface temperature is 105 ℃.
3. the tow through nervous roller curls, and curling number is 10-15/25mm, and the back heat-setting time that curls is 10-15 minute, and heat setting temperature is 60 ℃ in a district, 55 ℃ in two districts, 55 ℃ in three districts.Tow after the typing advances cutting machine to cut off, and shearing length is 51mm, and fiber number is 2.2dtex, and intensity is 3.47CN/dtex, and elongation is 40%.
4. spinning the drawing-off multiplying power after is 1.01*3.55*1.08, and draft speed is 100m/min.
Claims (6)
1. the production method of a low-melting point polyester staple fiber, it is characterized in that, fusing point is after 120-130 ℃ low melting point polyester chip passes through the cryogenic vacuum drum dried, enter screw rod through the filling drying tower, section enters filament spinning component after the fusion, through coiling and molding, boundling, the preheating of drawing-off groove, secondary drawing-off, three drawing-offs, nervous HEAT SETTING, curl, relaxation heat setting, cut-out, opening flow process be to finished product.
2. low-melting point polyester staple fiber production method according to claim 1 is characterized in that, polyester slice needs through the vacuum drum drying, and baking temperature is 60-65 ℃, and the time is 24 hours, and vacuum is-0.1Mpa.
3. low-melting point polyester staple fiber production method according to claim 1 and 2 is characterized in that, dried low melting point polyester chip drying system enters screw rod, and mould temperature is 70 ℃, and the drying tower temperature is 30 ℃.195 ℃ in screw rod one district, 235 ℃ in two districts, 250 ℃ in three districts, 275 ℃ in four districts, 275 ℃ in five districts, 248 ℃ of casings.
4. low-melting point polyester staple fiber production method according to claim 3 is characterized in that, the preceding semi-finished product boundling filament drafting temperature of spinning is: 55 ℃ of drawing-off grooves, 60 ℃ of II drawing machines, 65 ℃ of III drawing machines.Nervous setting roller surface keeps 105 ℃ of temperature, and tow is only from nervous roller surface process.60 ℃ of the temperature of curling, the relaxation heat setting temperature is 60/55/55 ℃.
5. low-melting point polyester staple fiber production method according to claim 1 is characterized in that, the preceding speed of spinning is for 970m/min, after spin speed and be 100m/min, the drawing-off multiplying power is 1.01*3.55*1.08.
6. low-melting point polyester staple fiber production method according to claim 1 is characterized in that the tow after the typing cuts off, and its length is 51mm, and fiber number is 2.2dtex, and intensity is 3.47CN/dtex, and elongation is 40%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410072878 CN1294304C (en) | 2004-11-25 | 2004-11-25 | Production for of melting point polyester short staple |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410072878 CN1294304C (en) | 2004-11-25 | 2004-11-25 | Production for of melting point polyester short staple |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1644771A true CN1644771A (en) | 2005-07-27 |
| CN1294304C CN1294304C (en) | 2007-01-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410072878 Expired - Fee Related CN1294304C (en) | 2004-11-25 | 2004-11-25 | Production for of melting point polyester short staple |
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| CN (1) | CN1294304C (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102453966A (en) * | 2011-05-23 | 2012-05-16 | 殷晃德 | Process for spinning low-melting-point heat bonding polyester filaments |
| CN103451826A (en) * | 2013-05-30 | 2013-12-18 | 徐云友 | Novel towel capable of replacing cleaning balls and wash towels and method for manufacturing novel towel |
| CN103643370A (en) * | 2013-11-20 | 2014-03-19 | 苏州工业园区友顺制衣厂 | Making process of elastic cotton cloth |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
-
2004
- 2004-11-25 CN CN 200410072878 patent/CN1294304C/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102453966A (en) * | 2011-05-23 | 2012-05-16 | 殷晃德 | Process for spinning low-melting-point heat bonding polyester filaments |
| CN102453966B (en) * | 2011-05-23 | 2012-11-07 | 殷晃德 | Process for spinning low-melting-point heat bonding polyester filaments |
| CN103451826A (en) * | 2013-05-30 | 2013-12-18 | 徐云友 | Novel towel capable of replacing cleaning balls and wash towels and method for manufacturing novel towel |
| CN103451826B (en) * | 2013-05-30 | 2014-12-24 | 徐云友 | Novel towel capable of replacing cleaning balls and wash towels and method for manufacturing novel towel |
| CN103643370A (en) * | 2013-11-20 | 2014-03-19 | 苏州工业园区友顺制衣厂 | Making process of elastic cotton cloth |
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| Publication number | Publication date |
|---|---|
| CN1294304C (en) | 2007-01-10 |
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| PB01 | Publication | ||
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Granted publication date: 20070110 Termination date: 20201125 |