Production technology of chemical fiber color silk

A production process and technology for colored yarns, which are used in fiber treatment, filament forming treatment, and spinning solution degassing, etc., can solve the problem of unsatisfactory water removal effect of polyester chips, increase the manufacturing cost of chemical fiber yarn, and reduce the firmness of chemical fiber yarn. and other problems, so as to avoid the unsatisfactory water removal effect, improve the water removal efficiency, and reduce the spinning waste gas.

Inactive Publication Date: 2018-06-19

浙江联颖科技有限公司

9 Cites 0 Cited by

AI-Extracted Technical Summary

Problems solved by technology

There are many raw materials of polyester chips in the manufacture of chemical fiber yarns, and the drying efficiency of polyester chips is low by heating and drying polyester chips by means of electric heating; and the effect of removing water from polyester chips piled up in the midd...

Method used

Visible embodiment 1, embodiment 2 and embodiment 3 by table 4 add diluted sulfuric acid in oil and can remove the wool that forms when passing through spinneret fine hole, and make chemical fiber silk feel soft.

Visible embodiment 1, embodiment 2 and its breaking strength value of the chemical fiber silk of embodiment 3 are all greater than its breaking strength value of the chemical fiber silk of contrast sample by table 1; The breaking strength value is higher, and the fastness of chemical fiber silk is higher , not prone to decapitation. It can be seen that the present invention uses quicklime and molecular sieve desiccant to stir and mix the polyester chips to remove water, which can fully remove the water in the polyester chips, and its water removal effect is better than that of electric heating.

Visible side blowing humidity is lower than 30% by table 3, and chemical fiber thread elongation at break is too low, and chemic...

Abstract

The invention discloses a production technology of chemical fiber color silk. The technology comprises the following steps of (1) slicing and dewatering, wherein polyester chips, color masterbatch, quicklime and molecular sieve desiccant are evenly mixed in a stirring barrel and stirred, moisture in the polyester chips is removed, the quicklime and the molecular sieve desiccant are filtered, and the dried polyester chips are obtained; (2) extrusion through a screw, wherein the dried polyester chips pass through a screw extruder and are heated in the screw extruder and fused, and high-temperature melt which is extruded from an outlet end of the screw extruder enters a spinning box; (3) cooling and spinning, wherein the high-temperature melt which enters the spinning box is extruded out fromfine holes of a spinneret plate, and an extruded melt fine flow is cooled into silk strips through lateral blowing wind; (4) bundling and oiling, wherein the cooled silk strips are bundled and oiledand prepared into the chemical fiber silk. The production technology has the advantages that the polyester chips are stirred, mixed and dewatered through the quicklime and the molecular sieve desiccant, the dewatering effect of the polyester chips is effectively improved, the firmness of the chemical fiber silk is improved, and the end breaking phenomenon of the chemical fiber silk is reduced.

Application Domain

Spinning solution de-aeratingSpinnerette packs +1

Technology Topic

PolyesterChemistry +6

Image

Examples

Experimental program(3)

Example Embodiment

[0033] Example 1

[0034] A production process of chemical fiber colored yarn, including the following steps:

[0035] (1) Dewatering of slices: Mix polyester slices, masterbatch, quicklime and molecular sieve desiccant in a mixing tank and stir for 2 to 3 hours. After the mixing is completed, the polyester chips after the moisture removal are filtered and separated from the quicklime and molecular sieve desiccant through the filter. Since the particle diameter of the polyester chips is larger than the particle diameter of the quicklime and molecular sieve desiccant, so collect the moisture-removed poly on the filter. Ester slices are sufficient.

[0036] The mass ratio of polyester chips, quicklime and molecular sieve desiccant is 7:2:4.

[0037] (2) Screw extrusion: The dried polyester chips are passed through a screw extruder, heated and melted in the screw extruder, and the high-temperature melt extruded from the outlet of the screw extruder enters the spinning box. The temperature at the outlet end of the screw extruder is 265°C, and the melt pressure at the outlet end is 12 MPa.

[0038] A detachable filter screen is installed in the screw extruder, and the detachable filter screen can filter the dry polyester chips.

[0039] (3) Cooling spinning: extruding the high-temperature melt that enters the spinning box from the pores of the spinneret, and the extruded melt flows through the side air blower and cooled into filaments. The side air blower adopts air-conditioning air, which is cooled by the cooling tower, and the cooling water in the cooling tower is used in circulation. The side blowing temperature is 20°C, the humidity is 70%, and the wind speed is 0.4m/s.

[0040] An electric heating plate is installed on the spinneret.

[0041] An atomizing nozzle is installed under the spinneret, and the water sprayed from the atomizing nozzle can be sprayed to the thread after cooling by side blowing.

[0042] (4) Bundling and oiling: the cooled filaments are bundled and oiled to make chemical fiber filaments.

[0043] The oil sprayed on the cooling wire is composed of the following components by mass percentage:

[0044]

Example Embodiment

[0045] Example 2

[0046] A production process of chemical fiber colored yarn, including the following steps:

[0047] (1) Dewatering of slices: Mix polyester slices, masterbatch, quicklime and molecular sieve desiccant in a mixing tank and stir for 2 to 3 hours. After the mixing is completed, the polyester chips after the moisture removal are filtered and separated from the quicklime and molecular sieve desiccant through the filter. Since the particle diameter of the polyester chips is larger than the particle diameter of the quicklime and molecular sieve desiccant, so collect the moisture-removed poly on the filter. Ester slices are sufficient.

[0048] The mass ratio of polyester chips, quicklime and molecular sieve desiccant is 5:1:2.

[0049] (2) Screw extrusion: The dried polyester chips are passed through a screw extruder, heated and melted in the screw extruder, and the high-temperature melt extruded from the outlet of the screw extruder enters the spinning box. The temperature at the outlet end of the screw extruder is 255°C, and the melt pressure at the outlet end is 13MPa.

[0050] A detachable filter screen is installed in the screw extruder, and the detachable filter screen can filter the dry polyester chips.

[0051] (3) Cooling spinning: extruding the high-temperature melt that enters the spinning box from the pores of the spinneret, and the extruded melt flows through the side air blower and cooled into filaments. The side blowing temperature is 17°C, the humidity is 65%, and the wind speed is 0.5m/s.

[0052] An electric heating plate is installed on the spinneret.

[0053] An atomizing nozzle is installed under the spinneret, and the water sprayed from the atomizing nozzle can be sprayed to the thread after cooling by side blowing.

[0054] (4) Bundling and oiling: the cooled filaments are bundled and oiled to make chemical fiber filaments.

[0055] The oil sprayed on the cooling wire is composed of the following components by mass percentage:

[0056]

Example Embodiment

[0057] Example 3

[0058] A production process of chemical fiber colored yarn, including the following steps:

[0059] (1) Dewatering of slices: Mix polyester slices, masterbatch, quicklime and molecular sieve desiccant in a mixing tank and stir for 2 to 3 hours. After the mixing is completed, the polyester chips after the moisture removal are filtered and separated from the quicklime and molecular sieve desiccant through the filter. Since the particle diameter of the polyester chips is larger than the particle diameter of the quicklime and molecular sieve desiccant, so collect the moisture-removed poly on the filter. Ester slices are sufficient.

[0060] The mass ratio of polyester chips, quicklime and molecular sieve desiccant is 9:3:6.

[0061] (2) Screw extrusion: The dried polyester chips are passed through a screw extruder, heated and melted in the screw extruder, and the high-temperature melt extruded from the outlet of the screw extruder enters the spinning box. The temperature at the outlet end of the screw extruder is 275°C, and the melt pressure at the outlet end is 11 MPa.

[0062] A detachable filter screen is installed in the screw extruder, and the detachable filter screen can filter the dry polyester chips.

[0063] (3) Cooling spinning: extruding the high-temperature melt that enters the spinning box from the pores of the spinneret, and the extruded melt flows through the side air blower and cooled into filaments. The side blowing temperature is 22°C, the humidity is 75%, and the wind speed is 0.3m/s.

[0064] An electric heating plate is installed on the spinneret.

[0065] An atomizing nozzle is installed under the spinneret, and the water sprayed from the atomizing nozzle can be sprayed to the thread after cooling by side blowing.

[0066] (4) Bundling and oiling: the cooled filaments are bundled and oiled to make chemical fiber filaments.

[0067] The oil sprayed on the cooling wire is composed of the following components by mass percentage:

[0068]

[0069] (1) Comparison table of breaking strength test of chemical fiber yarn:

[0070] Table 1:

[0071]

[0072] The comparison sample is to make chemical fiber yarn by heating the polyester chip to remove water by electric heating;

[0073] The blank sample is the polyester chip without water removal, and the polyester chip without water removal is made into chemical fiber;

[0074] It can be seen from Table 1 that the breaking strength values of the chemical fiber filaments of Example 1, Example 2 and Example 3 are all greater than the breaking strength value of the comparative chemical fiber yarn; the higher the breaking strength value, the higher the firmness of the chemical fiber yarn, and it is not easy to appear Broken head phenomenon. It can be seen that the invention adopts quicklime and molecular sieve desiccant to stir and mix polyester chips to remove water, which can fully remove the water in the polyester chips, and its water removal effect is better than that of electric heating.

[0075] (2) Test comparison table of elongation at break of chemical fiber yarn:

[0076] Table 2:

[0077]

[0078] It can be seen from Table 2 that when the side blowing temperature is lower than 17℃, the elongation at break of the chemical fiber is too low, and the chemical fiber is easy to be broken; the side blowing temperature is higher than 22℃, the elongation at break of the chemical fiber will drop, and the chemical fiber is also easy to break. . It can be seen that the present invention sets the side blowing temperature between 17°C and 22°C, which can ensure the elongation at break of the chemical fiber, thereby improving the stretchability of the chemical fiber.

[0079] table 3:

[0080]

[0081]

[0082] From Table 3, it can be seen that the side blowing humidity is less than 30%, the elongation of chemical fiber is too low, and the chemical fiber is easy to break; the side blowing humidity is higher than 75%, the elongation at break of the chemical fiber will fall, and the chemical fiber is also easy to break. . It can be seen that the present invention sets the humidity of the side blowing between 65% and 75%, which can ensure the elongation at break of the chemical fiber, thereby improving the stretchability of the chemical fiber.

[0083] (3) Comparison table of chemical fiber silk feel and hair removal test:

[0084] Table 4:

[0085]

[0086] The blank sample is that no sulfuric acid is added to the sprayed oil;

[0087] It can be seen from Table 4 that adding diluted sulfuric acid in the oil of Examples 1, 2 and 3 can remove the wool formed when passing through the pores of the spinneret, and make the chemical fiber silk feel soft.

PUM

Description & Claims & Application Information

We can also present the details of the Description, Claims and Application information to help users get a comprehensive understanding of the technical details of the patent, such as background art, summary of invention, brief description of drawings, description of embodiments, and other original content. On the other hand, users can also determine the specific scope of protection of the technology through the list of claims; as well as understand the changes in the life cycle of the technology with the presentation of the patent timeline. Login to view more.

Classification and recommendation of technical efficacy words

Improve water removal efficiency
prevent backflow

Production technology of chemical fiber color silk

AI-Extracted Technical Summary

Problems solved by technology

Method used

Abstract

Image

Examples

Example Embodiment

Example Embodiment

Example Embodiment

PUM

Description & Claims & Application Information

Similar technology patents

Four-way reversing valve, air conditioning system and control method of four-way reversing valve

Hydraulic oil filter of return pipeline of four-column oil press

Adjusting valve with self-sealing function

Electric vehicle wheel assembly capable of recycling road surface excitation energy

Water level adjusting system and method of heat exchanger

Classification and recommendation of technical efficacy words

Cabin water removal trolley

Trash can rotary water removing device

Umbrella water removal device for shopping mall

Device for preventing backflow in a cooling system

Engine control apparatus

Electric shaver

Drainage bag

Pulsed plasma thruster using vapor and method of making