Profiled fiber

Abstract

The utility model relates to a profiled fiber, and relates to the technical field of fibers. The profiled fiber comprises a flat sheet type fiber, and the profiled fiber is prepared from a high polymer melt with high viscosity. According to the profiled fiber, the cross section shape of the fiber is changed, and the specific surface area of the fiber is greatly increased, so that the profiled fiber has a relatively strong cool feeling effect.

Description

Technical Field

[0001] The utility model relates to the technical field of fibers, in particular to a special-shaped fiber. Background Art

[0002] As demand for clothing comfort continues to rise, fiber materials with a cooling effect are gaining widespread attention. Coolmax, a type of cooling fiber currently available on the market, is primarily engineered by modifying the fiber's cross-section to create a flat or caterpillar-shaped cross-section. Compared to traditional round-cross-section fibers, these specially shaped fibers significantly increase their surface area, enhancing the capillary effect and improving the fabric's moisture transport, resulting in a cool and comfortable feel for the wearer.

[0003] However, existing approaches to increasing specific surface area by modifying fiber cross-sectional shape still have limitations. Especially in extremely hot environments, existing cooling fibers still offer insufficient moisture conduction and heat dissipation. Therefore, there is an urgent need for new, shaped fibers that can further increase the specific surface area and cooling effect. Utility Model Content

[0004] In order to solve the above problems, the present invention provides a special-shaped fiber, which has a strong cooling effect by significantly increasing the specific surface area of ​​the fiber by changing the cross-sectional shape of the fiber.

[0005] In order to achieve the above object, the present invention provides a special-shaped fiber, which includes a flat sheet fiber and is made of a high-viscosity polymer melt.

[0006] The use of high viscosity polymer melt can give the fiber good strength and wear resistance.

[0007] In one embodiment, the shaped fiber includes a plurality of blades, which are composed of the flat fiber. The blades are connected to each other at the axis of the shaped fiber, and the blades extend outward from the axis of the shaped fiber to form a radial structure.

[0008] In one embodiment, the shaped fiber includes at least two lobes.

[0009] In one embodiment, the blade comprises at least two flat sheet-type fibers, and the flat sheet-type fibers of a single blade are connected to each other.

[0010] The design of the interconnected flat-sheet fibers within a single blade enables the profiled fiber to not only have a relatively large specific surface area, which endows the fabric with a good cooling sensation, but also, due to the staggered connection of the single fibers in the blade, forms a staggered structure at the end of the single fiber away from the axis. When different profiled fibers are stacked together, they are not easily interlocked, reducing the probability of compressive deformation between single fibers and the probability of the blades being bent and interlocked.

[0011] In one embodiment, the flat-sheet fiber is in an unfolded state.

[0012] In one embodiment, the cross-section of the flat-sheet fiber includes at least one of an arc shape and a "one" shape.

[0013] In one embodiment, the cross-section of the flat-sheet fiber includes an arc shape and a "one" shape. In a single blade, the connection points of the interconnected fibers are located between the two ends of the arc.

[0014] In one embodiment, the flat-sheet fibers with a cross-section of "one" shape are interconnected to the axis of the profiled fiber, and the flat-sheet fibers with a cross-section of arc shape extend outward from the axis of the profiled fiber.

[0015] In one embodiment, the cross-section of the flat-sheet fiber includes a "one" shape. In a single blade, the connection points of the interconnected fibers are located between the two ends of the "one" shape.

[0016] In one embodiment, the cross-section of the blade is in the shape of a hammer, the handle of the hammer is connected to the axis, and the head of the hammer extends outward.

[0017] Compared with the prior art, the present utility model has the following beneficial effects:

[0018] A profiled fiber of the present utility model changes the cross-sectional shape of the fiber, greatly increasing the specific surface area of the fiber, thereby having a strong cooling effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 FIG. is a schematic cross-sectional view of the profiled fiber prepared by an open square-shaped spinneret hole in the embodiment;

[0020] Figure 2 FIG. is a schematic cross-sectional view of the profiled fiber prepared by three interconnected "anchor"-shaped spinneret holes in the embodiment;

[0021] Figure 3 FIG. is a schematic cross-sectional view of the profiled fiber prepared by two interconnected "anchor"-shaped spinneret holes in the embodiment;

[0022] Figure 4In the embodiment, the cross section of the shaped fiber is prepared by an open field-shaped spinneret;

[0023] Figure 5 In the embodiment, the cross section of the shaped fiber is prepared by an open field-shaped spinneret;

[0024] Among them, 1 is the axis, 2 is the first flat sheet-type fiber, 3 is the second flat sheet-type fiber, and 4 is the connection point. DETAILED DESCRIPTION

[0025] To facilitate understanding of the present invention, a more comprehensive description of the present invention will be provided below with reference to the accompanying drawings. The drawings illustrate preferred embodiments of the present invention. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to facilitate a more thorough and comprehensive understanding of the disclosure of the present invention.

[0026] It should be noted that when an element is referred to as being “fixed to” another element, it may be directly on the other element or there may be an intermediate element. When an element is referred to as being “connected to” another element, it may be directly connected to the other element or there may be an intermediate element at the same time.

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0028] definition:

[0029] In the present invention, high viscosity refers to a viscosity of 2.6-3.0.

[0030] source:

[0031] Unless otherwise specified, the reagents, materials, and equipment used in this example are all commercially available; and the experimental methods, unless otherwise specified, are all conventional experimental methods in the art.

[0032] Example

[0033] 1. Choose nylon 6 as raw material.

[0034] 2. The cross-sectional shape of the spinneret hole is specifically designed to be an open field shape or an open triangular prism shape, or a shape in which several "anchor" shapes are connected.

[0035] 3. Spinning process: The spinning temperature is controlled at 250-260℃, the spinning speed is 3500 m / min, and the cooling air temperature is 20℃.

[0036] 4. Fiber treatment: After spinning, the fiber is stretched twice with a stretching ratio of 3 times, and then heat-set at 180°C.

[0037] The cross-sectional view of the shaped fiber prepared by the open field-shaped spinneret is shown in FIG. Figure 1 The cross-sectional view of the shaped fiber prepared by three interconnected "anchor" shaped spinnerets is shown in FIG. Figure 2 The cross-sectional view of the shaped fiber prepared by two interconnected "anchor" shaped spinnerets is shown in FIG. Figure 3 shown.

[0038] The shaped fiber is prepared by an open field-shaped spinneret, and the shaped fiber has four blades, each blade is composed of two flat-type fibers (a first flat-type fiber 2 and a second flat-type fiber 3). These two flat-type fibers are connected to each other so that the cross-section of the blade is hammer-shaped. The connection point 4 is located between the two ends of the first flat-type fiber 2. The hammer handles of each blade are connected to the axis 1 of the shaped fiber, and the hammer heads of each blade extend outward to form a radial structure.

[0039] The shaped fiber is prepared from three interconnected "anchor"-shaped spinnerets. The shaped fiber has three blades, each of which is composed of two flat-type fibers (a first flat-type fiber 2 and a second flat-type fiber 3). The cross-section of the first flat-type fiber 2 is arc-shaped, and the cross-section of the second flat-type fiber 3 is "I"-shaped. These two flat-type fibers are interconnected to make the cross-section of the blade "anchor"-shaped. The connection point is located between the two ends of the first flat-type fiber 2. The anchor handles of each blade are interconnected to the axis 1 of the shaped fiber, and the anchor heads of each blade extend outward to form a radial structure.

[0040] The shaped fiber is prepared by two interconnected "anchor"-shaped spinnerets. The shaped fiber has two blades, each of which is composed of two flat-type fibers (a first flat-type fiber 2 and a second flat-type fiber 3). The cross-section of the first flat-type fiber 2 is arc-shaped, and the cross-section of the second flat-type fiber 3 is "I"-shaped. These two flat-type fibers are interconnected to make the cross-section of the blade "anchor"-shaped. The connection point is located between the two ends of the first flat-type fiber 2. The anchor handles of each blade are interconnected to the axis 1 of the shaped fiber, and the anchor heads of each blade extend outward to form a radial structure.

[0041] 5. Two parallel experiments were conducted using the specific preparation method of this embodiment, wherein the cross section of the special-shaped fiber obtained from the open field-shaped spinneret is as follows: Figure 4 、 Figure 5 shown.

[0042] Experimental example

[0043] The special-shaped fibers of the embodiment were used to prepare fabrics, and their cooling effects were tested.

[0044] 1. Testing method for cooling effect: The cooling effect of the fabric is tested according to the cooling test standard GB / T35263-2017, and the testing instrument is KES-QM.

[0045] 2. Test results: The test results show that the specific surface area of ​​the nylon fiber is 2.5 times that of ordinary round fibers, and the contact cooling coefficient is 0.290J / (m 2 ·s), with a significant cooling effect.

[0046] By modifying the cross-sectional shape of nylon fibers to create an open pore structure, the present invention significantly increases the fiber's specific surface area, thereby significantly enhancing the cooling effect of the fabric. This method is simple and suitable for large-scale industrial production, and is expected to be widely used in clothing, home textiles, and other fields.

[0047] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0048] The above-described embodiments merely represent several implementations of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present utility model patent shall be determined by the appended claims.

Claims

1. A special-shaped fiber, characterized in that: The special-shaped fiber comprises a flat sheet fiber, and the special-shaped fiber is made of a high-viscosity polymer melt; The shaped fiber includes at least two blades, the blades are composed of the flat sheet-type fibers, the blades are connected to each other at the axis of the shaped fiber, and the blades extend outward from the axis of the shaped fiber to form a radial structure; The blade comprises at least two flat sheet-type fibers, and the flat sheet-type fibers of a single blade are connected to each other, so that the end of the blade away from the axis is a staggered structure.

2. The shaped fiber according to claim 1, characterized in that The flat sheet-type fibers are in an unfolded shape.

3. The shaped fiber according to claim 2, characterized in that The cross section of the flat sheet fiber includes at least one of an arc shape and a straight line shape.

4. The shaped fiber according to claim 3, characterized in that The cross-section of the flat sheet fiber includes an arc shape and an I-shape. In a single blade, the interconnected connection point is located between the two ends of the arc.

5. The shaped fiber according to claim 4, characterized in that The flat sheet-type fibers with a "I"-shaped cross section are connected to each other at the axis of the shaped fibers, and the flat sheet-type fibers with an arc-shaped cross section extend outward from the axis of the shaped fibers.

6. The shaped fiber according to claim 3, characterized in that The cross section of the flat sheet fiber includes an I shape, and in a single blade, the interconnected connection point is located between the two ends of the I shape.

7. The shaped fiber according to claim 6, characterized in that The cross section of the blade is hammer-shaped, the hammer handle of the hammer is connected to the axis, and the hammer head of the hammer extends outward.

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