Flexible ES fiber preparation process and device thereof

Abstract

The invention discloses a flexible ES fiber preparation process and device, the upper end of an extruder is provided with an extruder feed hopper, the left side of the extruder is provided with a driving motor, the driving motor drives a screw in the extruder to extrude materials, the extruder further comprises a heating unit, and the heating unit is connected with the extruder feed hopper. According to the flexible ES fiber preparation technology and device, the defect that in the prior art, in the actual using process, single-component ES fibers are insufficient in flexibility or supporting performance is overcome, the mode that two or more kinds of fibers are combined is adopted, fabric can have the soft hand feeling and have the supporting performance at the same time, and the product quality is improved.

Description

Technical Field

[0001] The invention relates to the technical field of fiber production, and in particular to a flexible ES fiber preparation process and a device thereof. Background Art

[0002] ES fiber is the abbreviation of "Ethylene-Propylene Side By Side" in English. It is a kind of polyolefin fiber developed by Chisso Corporation of Japan. As a new type of thermal bonding composite fiber, ES fiber has received high praise in the world.

[0003] ES fiber is a two-component composite fiber with a core-skin structure. The skin layer has a low melting point and good softness, while the core layer has a high melting point and high strength. After heat treatment, part of the skin layer melts and acts as a bond, while the rest remains in a fiber state and has the characteristic of low thermal shrinkage. This fiber is particularly suitable for the production of sanitary materials, thermal insulation filling materials, filter materials and other products using hot air penetration technology;

[0004] According to the different raw materials, the ES fibers on the market are mainly divided into PE / PP and PE / PET, and the product specifications are mainly 1.5-6D. After the ES fibers are heat-treated, the fibers are bonded to each other to form a non-woven fabric without adhesive. Different heat treatment methods can be selected to obtain non-woven fabrics with different effects. For example: hot air bonding type - fluffy non-woven fabric, hot rolling bonding type - high-strength non-woven fabric;

[0005] Single-component ES fibers are not flexible enough or do not provide enough support. Combining two or more fibers can make the fabric soft and more supportive. Summary of the invention

[0006] Therefore, in response to the above problems, the present invention proposes a flexible ES fiber preparation process and device, which solves the technical problem that the single-component ES fiber of the prior art is still insufficient in flexibility or support during actual use. The combination of two or more fibers can make the fabric have a soft feel and be more supportive.

[0007] To achieve the above object, the present invention adopts the following technical solution: a flexible ES fiber preparation process, the steps of which include:

[0008] 1) Pre-treating particles of two or more materials;

[0009] 2) The pretreated particles are fed into different screw extruders for extrusion, and the surface layer melt and the core layer melt are respectively supplied to the spinning head assembly by corresponding metering pumps according to the spinning ratio requirements to form fiber filaments with a core-sheath structure;

[0010] 3) Sent into a water-cooled or air-cooled box for cooling;

[0011] 4) Use winding equipment to rewind and package.

[0012] Furthermore, the pretreatment includes inputting large particles into a crusher to be crushed into small particles with a diameter not greater than 4 mm, and then sending them into a drying chamber for heating and drying, the drying temperature is 120-140 degrees Celsius, and the drying time is 8-10 hours.

[0013] Furthermore, the mass ratio of the surface layer molten liquid to the core layer molten liquid is 1:1; the temperature is 190° C., the molten liquid is melted for 40 minutes, and the co-extruded.

[0014] Further, in step 3, cooling is performed in the following manner:

[0015] Normal temperature air mixed with atomized water is sent into the air-cooling chamber for rapid cooling for 3-5 minutes, so that it is quickly cooled from 190 degrees Celsius in the heat treatment chamber to room temperature. Furthermore, its structure includes an extruder, an extruder feed hopper, a drive motor, an extrusion port, a melt pipe, a metering pump, a spinning assembly, and a spinneret. The extruder feed hopper is arranged at the upper end of the extruder, and the drive motor is arranged on the left side of the extruder. The drive motor drives the screw inside the extruder to extrude the material. The extruder also includes a heating unit, and the extrusion port is arranged at the right end of the extruder. The extrusion port is connected to the spinning assembly through a melt pipe, a metering pump is arranged on the melt pipe, and an insulation layer is arranged on the outside of the melt pipe. A replaceable spinneret is arranged at the output end of the spinning assembly, and the spinneret is fixedly connected to the spinning assembly by bolts.

[0016] Furthermore, the extruder, extruder feed hopper, drive motor, extrusion port, melting pipeline and metering pump are provided in at least 2 sets.

[0017] Furthermore, the spinning assembly also includes a filter and a distribution plate, the filter is arranged at the front end of the distribution plate, and the distribution plate is connected to the spinneret.

[0018] Furthermore, the filter is a stainless steel mesh structure.

[0019] Furthermore, a pressure detector is also provided at the front end of the metering pump.

[0020] Furthermore, a flow meter is also arranged at the front end of the metering pump.

[0021] By adopting the aforementioned technical scheme, the beneficial effects of the present invention are as follows: the flexible ES fiber preparation process and the device thereof improve the existing technology in which the single-component ES fiber still has insufficient flexibility or insufficient support during actual use. The combination of two or more fibers can make the fabric have a soft feel and greater support, thereby improving product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the structure of the present invention;

[0023] In the figure: 1. extruder; 2. extruder feed hopper; 3. drive motor; 4. extrusion port; 5. melt pipe; 6. metering pump; 7. spinning assembly; 8. spinneret. DETAILED DESCRIPTION

[0024] The present invention will now be further described with reference to the accompanying drawings and specific implementation methods.

[0025] refer to Figure 1 - Figure, this embodiment provides a flexible ES fiber preparation process and device, the steps of which include:

[0026] 1. Pre-treat particles of two or more materials;

[0027] 2. The pretreated particles are fed into different screw extruders for extrusion, and the surface layer melt and the core layer melt are respectively supplied to the spinning head assembly by corresponding metering pumps 6 according to the spinning ratio requirements to form fiber filaments with a core-sheath structure;

[0028] 3. Send it into water-cooling or air-cooling box for cooling;

[0029] 4 Use winding equipment to rewind and pack.

[0030] The pretreatment includes inputting large particles into a crusher to be crushed into small particles with a diameter not greater than 4 mm, and then sending them into a drying chamber for heating and drying. The drying temperature is 120-140 degrees Celsius and the drying time is 8-10 hours.

[0031] The mass ratio of the surface layer molten liquid to the core layer molten liquid is 1:1; the molten liquid is melted for 40 minutes at a temperature of 190° C. and co-extruded.

[0032] In step 3, cooling is performed in the following manner:

[0033] The room temperature air mixed with atomized water is sent into the air cooling room for rapid cooling for 3-5 minutes, so that the temperature is quickly reduced from 190 degrees Celsius in the heat treatment room to room temperature;

[0034] Its structure includes an extruder 1, an extruder feed hopper 2, a drive motor 3, an extrusion port 4, a molten pipe 5, a metering pump 6, a spinning assembly 7, and a spinneret 8. The extruder feed hopper 2 is arranged at the upper end of the extruder 1, and the drive motor 3 is arranged on the left side of the extruder 1. The drive motor 3 drives the screw inside the extruder 1 to extrude the material. The extruder 1 also includes a heating unit. The extrusion port 4 is arranged at the right end of the extruder 1. The extrusion port 4 is connected to the spinning assembly 7 through the molten pipe 5. The metering pump 6 is arranged on the molten pipe 5. The outer side of the molten pipe 5 is arranged with an insulation layer. The output end of the spinning assembly 7 is provided with a replaceable spinneret 8, and the spinneret 8 is fixedly connected to the spinning assembly 7 by bolts.

[0035] The extruder 1, the extruder feed hopper 2, the drive motor 3, the extrusion port 4, the melting pipe 5, and the metering pump 6 are provided in at least two sets.

[0036] The spinning assembly 7 further comprises a filter and a distribution plate. The filter is arranged at the front end of the distribution plate, and the distribution plate is connected to the spinneret 8 .

[0037] The filter is a stainless steel mesh structure.

[0038] A pressure detector is also provided at the front end of the metering pump 6 .

[0039] A flow meter is also provided at the front end of the metering pump 6 .

[0040] The flexible ES fiber preparation process and device thereof improve the existing technology in which the single-component ES fiber still has insufficient flexibility or insufficient support during actual use. The combination of two or more fibers can make the fabric have a soft feel and greater support, thereby improving product quality.

[0041] The sheath-core composite fiber of the present invention has the following physical properties:

[0042]

[0043]

[0044] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the attached claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0045] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A flexible ES fiber preparation process, characterized in that: The steps include: 1) Pre-treating particles of two or more materials; 2) The pretreated particles are fed into different screw extruders for extrusion, and the surface layer melt and the core layer melt are respectively supplied to the spinning head assembly by corresponding metering pumps according to the spinning ratio requirements to form fiber filaments with a core-sheath structure; 3) Sent into a water-cooled or air-cooled box for cooling; 4) Use winding equipment to rewind and package.

2. A flexible ES fiber preparation process according to claim 1, characterized in that: The pretreatment includes inputting large particles into a crusher to be crushed into small particles with a diameter not greater than 4 mm, and then sending them into a drying chamber for heating and drying. The drying temperature is 120-140 degrees Celsius and the drying time is 8-10 hours.

3. A flexible ES fiber preparation process according to claim 1, characterized in that: The mass ratio of the surface layer molten liquid to the core layer molten liquid is 1:1; the molten liquid is melted for 40 minutes at a temperature of 190° C. and co-extruded.

4. A process for preparing a flexible ES fiber according to claim 1, characterized in that: In step 3, cooling is performed in the following manner: Normal temperature air mixed with atomized water is sent into the air cooling chamber for rapid cooling for 3-5 minutes, so that the temperature is quickly reduced from 190 degrees Celsius in the heat treatment chamber to room temperature.

5. A flexible ES fiber preparation device according to claim 1, characterized in that: Its structure includes an extruder, an extruder feed hopper, a driving motor, an extrusion port, a molten pipe, a metering pump, a spinning assembly, and a spinneret. The extruder feed hopper is arranged at the upper end of the extruder, and the driving motor is arranged on the left side of the extruder. The driving motor drives the screw inside the extruder to extrude the material. The extruder also includes a heating unit. The extrusion port is arranged at the right end of the extruder, and the extrusion port is connected to the spinning assembly through a molten pipe. The metering pump is arranged on the molten pipe, and an insulation layer is arranged on the outer side of the molten pipe. A replaceable spinneret is arranged at the output end of the spinning assembly, and the spinneret is fixedly connected to the spinning assembly through bolts.

6. A flexible ES fiber preparation process and device according to claim 5, characterized in that: The extruder, the extruder feed hopper, the drive motor, the extrusion port, the melting pipeline and the metering pump are provided with at least two sets.

7. A flexible ES fiber preparation process and device according to claim 5, characterized in that: The spinning assembly further comprises a filter and a distribution plate, wherein the filter is arranged at the front end of the distribution plate, and the distribution plate is connected to the spinneret.

8. A flexible ES fiber preparation process and device according to claim 5, characterized in that: The filter is a stainless steel mesh structure.

9. A flexible ES fiber preparation process and device according to claim 5, characterized in that: A pressure detector is also arranged at the front end of the metering pump.

10. A flexible ES fiber preparation process and device according to claim 5, characterized in that: A flow meter is also arranged at the front end of the metering pump.

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