Preparation process of low-melting-point special-shaped polyester filament yarn

Abstract

The invention relates to the technical field of low-melting-point special-shaped polyester filament yarn preparation, and discloses a low-melting-point special-shaped polyester filament yarn preparation technology which comprises the steps that chemical fiber liquid stored in a chemical fiber liquid pool is injected into a spinneret plate through a metering pump and a flow pipeline; chemical fiber liquid passes through micropores of the spinneret plate under the pressurization action of the metering pump and then is subjected to jet forming, then the chemical fiber liquid enters the solidification liquid tank, a spinning pipe is fixedly arranged in the solidification liquid tank, spinning pipe holes are annularly formed in the spinning pipe at intervals, and solidification liquid in the solidification liquid tank enters the spinning pipe; chemical fiber liquid sprayed by the spinneret plate enters the spinning pipe and then is quickly solidified under the action of solidification liquid. The process effect can be rapidly changed by adjusting the positions of the separation sliding sleeve and the separation plate, so that the curing forming time of the polyester filament yarn is changed, and the drafting elongation of the low-melting-point special-shaped polyester filament yarn is changed.

Description

Technical Field

[0001] The invention relates to the technical field of low-melting-point special-shaped polyester filament preparation, in particular to a low-melting-point special-shaped polyester filament preparation process. Background Art

[0002] As the application of smart textiles becomes more and more widespread, color-changing fiber technology has also developed rapidly. However, the wearability of color-changing fibers is not high, the cost is huge, and they cannot be mass-produced. Therefore, they are not perfect in practical application, which greatly limits the industrial development of color-changing fibers. Therefore, it is of great scientific research value to produce continuous smart color-changing fibers with excellent performance through low-cost processes. Summary of the invention

[0003] The technical problem to be solved by the present invention is: in order to overcome the above problems, a process for preparing low-melting-point special-shaped polyester filaments is provided, which solves the above problems.

[0004] The present invention solves the technical problem by adopting the following technical solutions:

[0005] A process for preparing low-melting-point special-shaped polyester filaments, comprising injecting a chemical fiber liquid stored in a chemical fiber liquid pool into a spinneret through a metering pump via a flow pipe, the chemical fiber liquid passes through the micropores of the spinneret under the pressurized action of the metering pump and is sprayed into shape, and then enters a coagulation liquid tank, wherein a spinning tube is fixedly arranged in the coagulation liquid tank, and spinning tube holes are arranged at annular intervals on the spinning tube to allow the coagulation liquid in the coagulation liquid tank to enter the spinning tube, the chemical fiber liquid sprayed from the spinneret enters the spinning tube and is rapidly coagulated under the action of the coagulation liquid, and then is twisted and rolled into the oil guide wheel, and is wound onto the winding drum after passing through the oil guide wheel;

[0006] In addition, a coagulation bath circulation tank is provided below the coagulation liquid tank for collecting the coagulation liquid flowing out of the textile nozzle at the lower end of the spinning tube, and then refluxes into the coagulation liquid tank through a reflux pipe connected to the coagulation bath circulation tank under the action of a circulation pump; in addition, a partition sleeve is provided outside the spinning tube, a partition plate is fixedly provided on the outside of the partition sleeve, the outer wall of the partition plate is sealed with the inner wall of the coagulation liquid tank, and a ground sleeve is fixedly provided at the bottom of the coagulation liquid tank, an elastic sleeve is connected between the ground sleeve and the partition sleeve, and the elastic sleeve is waterproof and elastic.

[0007] In one embodiment, a heating module is further provided in the coagulation bath liquid circulation tank for heating the coagulation liquid at a constant temperature.

[0008] In one embodiment, the heating module is a water bath heating module, and its heating range is between 40 degrees Celsius and 65 degrees Celsius.

[0009] In one embodiment, the holes of the spinneret are triangular in structure and can eject polyester filaments with isosceles triangle cross-sections.

[0010] In one embodiment, a filter is serially connected to the reflux pipe, and the filter is used to filter the refluxed coagulation liquid to avoid clogging.

[0011] In one embodiment, the filter is located below the circulation pump.

[0012] In one embodiment, the inner diameter of the spinning tube is half the diameter of the spinneret.

[0013] In one embodiment, the mesh diameter of the spinning tube holes is five to ten times the diameter of the prepared low-melting-point special-shaped polyester filaments, and the mesh diameter of the spinning tube holes is a regular polygonal structure.

[0014] In one embodiment, the working flow rate of the circulation pump is consistent with the discharge flow rate at the textile nozzle.

[0015] The advantages and positive effects of the present invention are: by adjusting the positions of the separation sleeve and the separation plate, the process effect can be quickly changed so that the solidification molding time of the polyester filament is changed and then the drafting elongation of the low-melting-point special-shaped polyester filament is changed;

[0016] The solidifying liquid is circulated by the cooperation of the circulation pump and the solidifying bath liquid circulation tank, which can effectively avoid the solidifying liquid from settling and improve the utilization rate of the solidifying liquid.

[0017] The design of the elastic sleeve can form a cavity completely free of solidifying liquid under the partition plate, thereby saving the use of solidifying liquid. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0019] Figure 1 It is a structural schematic diagram of the present invention. DETAILED DESCRIPTION

[0020] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0021] The embodiments of the present invention are further described in detail below with reference to the accompanying drawings:

[0022] like Figure 1As shown, a process for preparing low-melting-point special-shaped polyester filaments of the present invention comprises injecting the chemical fiber liquid stored in the chemical fiber liquid pool 10 into the spinneret 13 through the flow pipe 12 by the metering pump 11, and the chemical fiber liquid is sprayed and formed after passing through the micropores of the spinneret 13 under the pressurized action of the metering pump 11, and then enters the coagulation liquid tank 18, wherein the coagulation liquid tank 18 is fixedly provided with a spinning tube 15, and the spinning tube 15 is provided with spinning tube holes 16 at annular intervals for allowing the coagulation liquid in the coagulation liquid tank 18 to enter the spinning tube 15, and the chemical fiber liquid sprayed from the spinneret 13 enters the spinning tube 15 and is rapidly coagulated under the action of the coagulation liquid, and then is twisted and rolled into the oil guide wheel 22, and is wound onto the winding drum 21 after passing through the oil guide wheel 22;

[0023] In addition, a coagulation bath circulation groove 20 is provided below the coagulation liquid tank 18 for collecting the coagulation liquid flowing out of the textile nozzle 23 at the lower end of the spinning tube 15, and then refluxes to the coagulation liquid tank 18 through a reflux pipe 17 connected to the coagulation bath circulation groove 20 under the action of a circulation pump 19. In addition, a partition sleeve 25 is also provided outside the spinning tube 15, and a partition plate 24 is fixedly provided on the outside of the partition sleeve 25, and the outer wall of the partition plate 24 is sealed with the inner wall of the coagulation liquid tank 18, and a ground sleeve 26 is fixedly provided at the bottom of the coagulation liquid tank 18, and an elastic sleeve 27 is connected between the ground sleeve 26 and the partition sleeve 25, and the elastic sleeve 27 is waterproof and elastic.

[0024] In one embodiment, a heating module is further provided in the coagulation bath liquid circulation tank 20 for heating the coagulation liquid at a constant temperature.

[0025] In one embodiment, the heating module is a water bath heating module, and its heating range is between 40 degrees Celsius and 65 degrees Celsius.

[0026] In one embodiment, the holes of the spinneret 13 are triangular in structure and can eject polyester filaments with isosceles triangle cross-sections.

[0027] In one embodiment, a filter 29 is connected in series to the reflux pipe 17 , and the filter 29 is used to filter the refluxed coagulation liquid to avoid clogging.

[0028] In one embodiment, the filter 29 is located below the circulation pump 19 .

[0029] In one embodiment, the inner diameter of the spinning tube 15 is half the diameter of the spinneret 13 .

[0030] In one embodiment, the mesh diameter of the spinning tube hole 16 is five to ten times the diameter of the prepared low-melting-point special-shaped polyester filament, and the mesh of the spinning tube hole 16 is a regular polygonal structure.

[0031] In one embodiment, the working flow rate of the circulation pump 19 is consistent with the discharge flow rate at the textile nozzle 23.

[0032] It should be emphasized that the embodiments described in the present invention are illustrative rather than restrictive, and therefore the present invention is not limited to the embodiments described in the specific implementation manners. Any other implementation manners derived by those skilled in the art based on the technical solutions of the present invention also fall within the scope of protection of the present invention.

Claims

1. A process for preparing low-melting-point shaped polyester filaments, characterized in that: The invention comprises injecting the chemical fiber liquid stored in the chemical fiber liquid pool (10) into the spinneret (13) through the metering pump (11) and the flow pipe (12); the chemical fiber liquid passes through the micropores of the spinneret (13) under the pressure of the metering pump (11) and is sprayed into shape, and then enters the coagulation liquid tank (18); wherein a spinning tube (15) is fixedly arranged in the coagulation liquid tank (18); spinning tube holes (16) are arranged at annular intervals on the spinning tube (15) for allowing the coagulation liquid in the coagulation liquid tank (18) to enter the spinning tube (15); after the chemical fiber liquid sprayed from the spinneret (13) enters the spinning tube (15), it is rapidly coagulated under the action of the coagulation liquid, and then is twisted and rolled into the oil guide wheel (22); and after passing through the oil guide wheel (22), it is wound onto the winding drum (21); In addition, a coagulation bath circulation groove (20) is provided below the coagulation liquid groove (18) for collecting the coagulation liquid flowing out from the spinning nozzle (23) at the lower end of the spinning tube (15), and then refluxes into the coagulation liquid groove (18) through a reflux pipe (17) connected to the coagulation bath circulation groove (20) under the action of a circulation pump (19). In addition, a partition sleeve (25) is provided outside the spinning tube (15), a partition plate (24) is fixedly provided outside the partition sleeve (25), the outer side wall of the partition plate (24) is sealed with the inner wall of the coagulation liquid groove (18), and a ground sleeve (26) is fixedly provided at the bottom of the coagulation liquid groove (18), and an elastic sleeve (27) is connected between the ground sleeve (26) and the partition sleeve (25), and the elastic sleeve (27) is waterproof and elastic.

2. The process for preparing low-melting-point shaped polyester filament according to claim 1, characterized in that: A heating module is also provided in the coagulation bath liquid circulation tank (20) for heating the coagulation liquid at a constant temperature.

3. The process for preparing low-melting-point shaped polyester filament according to claim 2, characterized in that: The heating module is a water bath heating module, and its heating range is between 40 degrees Celsius and 65 degrees Celsius.

4. A process for preparing low-melting-point shaped polyester filament according to claim 3, characterized in that: The holes of the spinneret (13) are triangular in structure and can eject polyester filaments with isosceles triangle cross-sections.

5. A process for preparing low-melting-point shaped polyester filament according to claim 4, characterized in that: A filter (29) is connected in series to the reflux pipe (17), and the filter (29) is used to filter the refluxed coagulation liquid to avoid clogging.

6. A process for preparing low-melting-point shaped polyester filament according to claim 5, characterized in that: The filter (29) is located below the circulation pump (19).

7. A process for preparing low melting point special-shaped polyester filaments according to claim 6, characterized in that: The inner diameter of the spinning tube (15) is half the diameter of the spinneret (13).

8. A process for preparing low-melting-point shaped polyester filament according to claim 7, characterized in that: The mesh diameter of the spinning tube hole (16) is five to ten times the diameter of the prepared low-melting-point special-shaped polyester filament, and the mesh of the spinning tube hole (16) is a regular polygonal structure.

9. A process for preparing low-melting-point shaped polyester filament according to claim 8, characterized in that: The working flow rate of the circulation pump (19) is consistent with the discharge flow rate at the textile nozzle (23).

Images