Process for producing porous poly(ethylene terephthalate) fine denier filament by using single plate

A polyethylene terephthalate and veneer technology, which is applied in the technical field of veneer production of 250-300-hole polyethylene terephthalate fine denier filaments, can solve the problem of high use cost and unsatisfactory use Requirements, uneven cooling of inner and outer layers of tow, etc.

Inactive Publication Date: 2006-10-11
SHENGHONG GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The manufacturing and use cost of the device used for ring blowing cooling is very high, so it is rarely used at present; the side blowing device is widely used because of its low cost and convenient maintenance, but the side blowing cooling method is only suitable for the production of single boards with less than 192 holes.

Method used

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  • Process for producing porous poly(ethylene terephthalate) fine denier filament by using single plate
  • Process for producing porous poly(ethylene terephthalate) fine denier filament by using single plate
  • Process for producing porous poly(ethylene terephthalate) fine denier filament by using single plate

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0033] Example 1: Production of POY (pre-oriented yarn) with 150 denier / 288 strands (final denier of textured yarn). The diameter of the spinneret is 100 mm, distributed in a diamond shape, regardless of filaments; component selection: the filter material is metal sand, the component pressure is 150 kg / cm2, each spinning position has 10 components, and the component center distance is 127 mm ; Spinning temperature: 293°C; Side blowing window: 1.2 meters high, with honeycomb panels inside, so that the wind is in a uniform laminar flow state; an arc-shaped plate 5 is installed outside the side blowing window, and the arc-shaped plate 5 consists of 10 pieces Composed of semi-circular stainless steel sheets with a radius of 63.5 mm (refer to attached Figure 4 shown); oil content: 0.4-0.45%; winding speed: 2800 m / min. Implementation effect: production is unstable, evenness CV value (the coefficient of variation of the calculated silk thickness change) is greater than 1.6%, the fu...

example 2

[0034] Example 2: Production of POY (pre-oriented yarn) with 150 denier / 288 strands (final denier of textured yarn). The diameter of the spinneret is 100 mm, and the spinneret holes are distributed in a diamond shape; component selection: the filter material is metal sand, the component pressure is 150 kg / cm2, each spinning position has 10 components, and the center distance of the components is 127 mm; Wire temperature: 293°C; side blower window: 1.2 meters high, with honeycomb panels inside, so that the wind is in a uniform laminar flow state; an arc-shaped plate 5 for wind protection is installed on the outside of the side blower window, and the arc-shaped plate 5 is 10 It consists of a semicircular stainless steel sheet with a radius of 63.5 mm (refer to the attached Figure 4shown); the silk extruded from the spinneret is divided into two parts, the double oil nozzles are oiled, and they are jointed before the godet; oil content: 0.4-0.45%; winding speed: 2800 m / min. Imp...

example 3

[0035] Example 3: POY (pre-oriented yarn) of 200 denier / 288 strands (final denier of textured yarn) was produced. The diameter of the spinneret is 100 mm, and it is distributed in a diamond shape; component selection: the filter material is metal sand, and the component pressure is 150 kg / cm2; each spinning position has 10 components, and the component center distance is 127 mm; spinning temperature: 292°C; side blower window: 1.2 meters high, with honeycomb panels inside, so that the wind is in a uniform laminar flow state; an arc-shaped windshield is installed on the outside of the side blower window, and the windshield is made of 10 semicircular stainless steel Composed of sheets, with a radius of 63.5 mm; the filaments extruded from the spinneret are divided into two, double oil nozzles are oiled, and jointed before the godet; oil content: 0.42%; winding speed: 2850 m / min. Implementation effect: stable production, evenness CV value is less than 1.35%, full roll rate is gre...

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Abstract

This invention relates to a single-sheet producing multi-holes ethylene terephthalate elongated silk technology, which mainly includes melting body transfer, filtering melting body and extruding silk, cooling separately, oiling and joining and wrapping the tow. This invention uses silk-separating compound cooling method that is using side blowing device to cool the inner face of the tow, adding arc deep bead at the outer side of the side blowing device to make part of side blowing wind rebound by arc deep bead, which makes the tow have well cooling effect.

Description

technical field [0001] The invention relates to a process for producing porous polyethylene terephthalate fine-denier filaments from a single plate, in particular to a process for producing 250-300-hole polyethylene terephthalate fine-denier filaments from a single plate. Background technique [0002] In the prior art, many companies adopt continuous polycondensation method to directly spin polyethylene terephthalate melt to produce POY (pre-oriented yarn) and FDY (full drawn yarn) products, or use continuous polycondensation method to produce poly After ethylene terephthalate is sliced, it is then melt-spun. [0003] The spinning process is as follows: the polyethylene terephthalate melt from the polyester unit is passed through the melt booster pump to increase the pressure, then cooled by the melt cooler, and distributed to each spinning line ; Or the polyethylene terephthalate chips are dried and melted under pressure by a screw extruder, and th...

Claims

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Application Information

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IPC IPC(8): D01D5/08D01F6/62
Inventor 梅锋朱军营张建国
Owner SHENGHONG GRP CO LTD
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