CN102899736B - Low-temperature spinning process - Google Patents
Low-temperature spinning process Download PDFInfo
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- CN102899736B CN102899736B CN201210392311.8A CN201210392311A CN102899736B CN 102899736 B CN102899736 B CN 102899736B CN 201210392311 A CN201210392311 A CN 201210392311A CN 102899736 B CN102899736 B CN 102899736B
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Abstract
The invention discloses a low-temperature spinning process. Equipment comprises a chip storage bin body with spinning chips inside. A feed inlet is arranged at the top of the chip storage bin body. The bottom of the chip storage bin body is connected with a discharge pipe. The discharge pipe is used for conveying the spinning chips into a spinning manifold. After the spinning manifold is heated by a boiler to fuse the spinning chips, spinning chip fusant is conveyed to a spinneret plate through an extruder and yarns are sprayed by spinning jets. A gas inlet bin which is communicated with a gas inlet pipe is arranged in the chip storage bin body relative to at the end part of the discharge pipe. Nitrogen is filled into the gas inlet pipe. The spinning chips comprise the following components in percent by weight: 70-80 percent of nylon 6, 10-20 percent of biphenyl ether, 2-5 percent of methylnaphthalene and 3-5 percent of biphenyl. By adopting the low-temperature spinning process, on the basis that the purity of the spinning chips is improved through the nitrogen, the methylnaphthalene is added and used as heat-carrying agent to control spinning temperature in the spinning manifold and prevent the mechanical property of the nylon 6 from being damaged, and the yarn quality is improved.
Description
Technical field
The present invention relates to a kind of spinning technique, relate in particular to a kind of low-temp spinning technique.
Background technology
In the spinning technique of chemical fiber yarn, for the boiling temperature of spinning chips, all there is strict control at present.Existing spinning chips is mostly nylon 6 and the mixture of biphenyl, Biphenyl Ether, and biphenyl, Biphenyl Ether, as thermophore control spinning temperature, prevent hot-spot.Because the boiling point of biphenyl, Biphenyl Ether is respectively 257 ℃, 262 ℃, to cause thus spinning temperature to be generally 260 ℃ be a kind of high temperature spinning, and high temperature spinning has often destroyed the mechanical property of nylon 6 to a certain extent, has affected the quality of silk thread.
The Chinese invention patent patent No. 201010127325.8 discloses a kind of fire-retardant, uvioresistant polyester section, adopt the technique progressively heating up to carry out vacuumize, application polyester fiber production technology, spinning temperature is 255 ℃～285 ℃, drafting multiple is 3.5～4.5 times.This kind of slice spinning technique is exactly a kind of high temperature spinning process.
Summary of the invention
The invention provides the low-temp spinning technique that a kind of technique is simple, silk thread quality is good, energy consumption is low.
A kind of low-temp spinning technique, comprise the chip bunker body of built-in spinning chips, chip bunker bodies top is provided with charging aperture, bottom is connected with discharge nozzle, and discharge nozzle is delivered to spinning chips in spinning manifold, and spinning manifold is after boiler heat fused spinning chips, by extruder, spinning chips melt is inputted to spinnerets, by shower nozzle ejection silk thread, in described chip bunker body, discharge nozzle end is provided with the air inlet storehouse that is communicated with air inlet pipe relatively, nitrogen injection in air inlet pipe; Described spinning chips comprises by weight percentage: 70-80% nylon 6,10-20% Biphenyl Ether, 2-5% methyl naphthalene, 3-5% biphenyl.This kind of low-temp spinning technique first to the chip bunker body perfusion inert gas in built-in air inlet storehouse to discharge the air being present between spinning chips, the degree of purity that improves spinning chips prevents that air from mixing and affect spinning quality.The composition of spinning chips is that the warm Biphenyl Ether of low boiling thermophore, the biphenyl of 248 ℃ makes spinning temperature be controlled at 253 ℃ owing to having added this boiling point of methyl naphthalene, for a kind of low-temp spinning technique has guaranteed the good mechanical property of nylon 6.
Described air inlet storehouse comprises a conical Cang Ding, top, storehouse downside is connected with by first connecting rod the cylindrical shape warehouse that external diameter is less than storehouse top/bottom part external diameter, cylindrical bin body sidewall is communicated with air inlet pipe, cylindrical shape warehouse bottom connects chip bunker body by second connecting rod, between cylindrical shape warehouse and Cang Ding, chip bunker body, all there is gap, nitrogen is overflowed by the gap between cylindrical shape warehouse and Cang Ding, chip bunker body by air inlet pipe, and discharges the air being present between spinning chips.
The spinning temperature of described spinning chips in spinning manifold is 253 ℃, prevents from destroying the mechanical property of nylon 6.
It is the mechanical property that spinning temperature in thermophore control spinning manifold prevents from destroying nylon 6 that the present invention adds methyl naphthalene on nitrogen improves the basis of spinning chips purity, has improved silk thread quality.
Accompanying drawing explanation
Fig. 1 is low-temp spinning process structure schematic diagram of the present invention.
The specific embodiment
A kind of low-temp spinning technique as shown in Figure 1, comprise the chip bunker body 1 of built-in spinning chips, chip bunker body 1 top is provided with charging aperture 5, bottom is connected with discharge nozzle 3, discharge nozzle 3 is delivered to spinning chips in spinning manifold 7, spinning manifold 7 is after boiler 8 heat fused spinning chips, by extruder, spinning chips melt is inputted to spinnerets, by shower nozzle ejection silk thread, the interior relative discharge nozzle of chip bunker body 13 ends are provided with the air inlet storehouse 2 that is communicated with air inlet pipe 4, air inlet storehouse 2 comprises a conical Cang Ding, top, storehouse downside is connected with by first connecting rod the cylindrical shape warehouse that external diameter is less than storehouse top/bottom part external diameter, cylindrical bin body sidewall is communicated with air inlet pipe 4, cylindrical shape warehouse bottom connects chip bunker body 1 by second connecting rod, cylindrical shape warehouse and Cang Ding, between chip bunker body 1, all there is gap, the interior nitrogen injection of air inlet pipe 4, nitrogen is by cylindrical shape warehouse and Cang Ding, the cleanliness of the air raising spinning chips being present between spinning chips is overflowed and then is discharged in gap between chip bunker body 1,
Spinning chips comprises by weight percentage: 70-80% nylon 6,10-20% Biphenyl Ether, 2-5% methyl naphthalene, 3-5% biphenyl.The spinning temperature of spinning chips in spinning manifold 7 is 253 ℃.
Under other constant prerequisites, the percentage by weight of spinning chips is as following table:
Claims (2)
1. a low-temp spinning technique, comprise the chip bunker body (1) of built-in spinning chips, chip bunker body (1) top is provided with charging aperture (5), bottom is connected with discharge nozzle (3), discharge nozzle (3) is delivered to spinning chips in spinning manifold (7), spinning manifold (7) is after boiler (8) heat fused spinning chips, by extruder, spinning chips melt is inputted to spinnerets, by shower nozzle ejection silk thread, it is characterized in that: in described chip bunker body (1), discharge nozzle (3) end is provided with the air inlet storehouse (2) that is communicated with air inlet pipe (4) relatively, the interior nitrogen injection of air inlet pipe (4), described spinning chips comprises by weight percentage: 70-80% nylon 6,10-20% Biphenyl Ether, 2-5% methyl naphthalene, 3-5% biphenyl, described air inlet storehouse (2) comprises a conical Cang Ding, top, storehouse downside is connected with by first connecting rod the cylindrical shape warehouse that external diameter is less than storehouse top/bottom part external diameter, cylindrical bin body sidewall is communicated with air inlet pipe (4), cylindrical shape warehouse bottom connects chip bunker body (1) by second connecting rod, and cylindrical shape warehouse and Cang Ding, chip bunker body all exist gap between (1).
2. low-temp spinning technique as claimed in claim 1, is characterized in that: the spinning temperature of described spinning chips in spinning manifold (7) is 253 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210392311.8A CN102899736B (en) | 2012-09-30 | 2012-09-30 | Low-temperature spinning process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210392311.8A CN102899736B (en) | 2012-09-30 | 2012-09-30 | Low-temperature spinning process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102899736A CN102899736A (en) | 2013-01-30 |
| CN102899736B true CN102899736B (en) | 2014-04-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210392311.8A Expired - Fee Related CN102899736B (en) | 2012-09-30 | 2012-09-30 | Low-temperature spinning process |
Country Status (1)
| Country | Link |
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| CN (1) | CN102899736B (en) |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03104910A (en) * | 1989-09-18 | 1991-05-01 | Teijin Ltd | Apparatus for melt spinning |
| CN100473765C (en) * | 2006-09-04 | 2009-04-01 | 杨福兴 | Method of fusion spinning fire resistant special type elastic spandex fiber and producing device thereof |
| CN100580159C (en) * | 2007-05-21 | 2010-01-13 | 北京大学 | Process for producing nylon fibre under low temperature |
| JP2011208291A (en) * | 2010-03-29 | 2011-10-20 | Toray Ind Inc | Method for producing polyamide fiber |
| CN101885842B (en) * | 2010-07-09 | 2012-03-21 | 北京三联虹普新合纤技术服务股份有限公司 | Continuous polymerization production technology for polyamide fibre 6 |
| CN102199285A (en) * | 2011-04-22 | 2011-09-28 | 威海市华旺锦纶化工有限公司 | Nylon 6 slices for superfine sea-island fibers and manufacturing method thereof |
| CN102304780B (en) * | 2011-07-27 | 2014-02-26 | 东华大学 | Spinning machine special for gas shield |
| CN102433602A (en) * | 2011-08-30 | 2012-05-02 | 广东新会美达锦纶股份有限公司 | Production method of durable anti-ultraviolet chinlon 6 fiber |
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2012
- 2012-09-30 CN CN201210392311.8A patent/CN102899736B/en not_active Expired - Fee Related
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