Heating polyester yarn and production process thereof
By installing a chamber on the wire strip of the yarn and filling it with external functional powder, the problem of reducing the heating effect after yarn is worn is solved, and the efficient warmth and heating performance of the yarn is improved.
Patent Information
- Application Number
- CN202510079876.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-18
- Publication Date
- 2025-03-28
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
After the yarn is worn, some of the fibers are worn, exposing the inner core of the fibers, and the attached heating particles are removed, reducing the heating effect.
By providing a chamber on the wire strip of the yarn and filling the chamber on the surface of the outer layer with the polymer covered with the polymer, the inner functional powder is distributed inside the polymer and the surface, and the outer functional powder is distributed inside the attachment and the surface, ensuring that the outer functional powder is embedded inside the polymer after the wear, reducing losses and maintaining function.
The loss of external functional powder is reduced, the coverage on the yarn surface is ensured, and the heating performance of the yarn is enhanced, especially in parts with higher bristling.
Smart Images
Figure CN119711007A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of yarn production, and more specifically, to a heating polyester yarn and a production process thereof. Background Art
[0002] Polyester yarn refers to yarn spun from polyester fiber as raw material. Polyester fiber refers to a type of polymer with an ester group in the main chain, which is made by spinning. It mostly refers to fibers produced with ethylene phthalate as raw material. Polyester yarn is one of the most common chemical fibers and is used in many fields including clothing, home textiles, and engineering fabrics. Heat-generating polyester yarn is a specialized polyester yarn commonly found in clothing and home textiles. It is generally processed by attaching heat-generating particles to the polyester yarn, and generates heat through hygroscopic heat generation, far-infrared heat generation, and other methods.
[0003] There are many different steps in the production and post-processing of yarns, which can make the yarns present different structures and properties. The sanding process can form a fluff structure on the surface of the yarn, slowing down the air flow on the yarn side, thereby improving the warmth effect of the yarn after it is woven into the fabric. Therefore, the heating polyester yarn is sanded and then woven, so that it can rotate and generate heat while passively keeping warm. However, in the actual production and processing process, after sanding, part of the fibers on the surface of the yarn are worn, exposing the inner core of the fiber, and causing the particles attached to the fiber surface to fall off, reducing the coverage of the heating particles on the yarn surface and affecting the heating effect of the yarn.
[0004] Therefore, a new solution needs to be proposed to solve this problem. Summary of the invention
[0005] In view of the shortcomings of the prior art, the object of the present invention is to provide a heating polyester yarn and a production process thereof.
[0006] The above technical objectives of the present invention are achieved through the following technical solutions: a heating polyester yarn, comprising a plurality of strands of filaments and an outer layer wrapped around the filaments, the filaments comprising a polymer and an inner functional powder, the outer layer comprising an attachment and an outer functional powder, the surface of the polymer being provided with a plurality of cavities, the outer layer covering the surface of the polymer and filling the cavities, the inner functional powder being distributed inside and on the surface of the polymer, the outer functional powder being distributed inside and on the surface of the attachment, the polymer comprising sodium polyacrylate, and the thickness of the outer layer being less than the radius of the filaments.
[0007] The present invention is further configured as follows: the polymer further includes polyethylene terephthalate, and the official moisture regain of the polymer is not less than 1.2%.
[0008] The present invention is further configured as follows: the internal functional powder is a light-colored tourmaline-heat-generating ceramic powder compound, the zinc content in the filament is not less than 1000 ppm, and the germanium content in the filament is not less than 20 ppm.
[0009] The present invention is further configured as follows: a plurality of cavities are provided inside the polymer, and the internal functional powder is also distributed on the inner surface of the cavity.
[0010] The present invention is further configured such that the average volume of the external functional powder is greater than the average volume of the internal functional particles.
[0011] A production process of a heating polyester yarn, used to produce the above-mentioned heating polyester yarn, comprises the following steps: S1, melting the masterbatch and adding the internal functional powder to obtain a molten raw material; S2, passing the molten raw material through an extrusion plate to form a filament; S3, passing the silk strips through the network device to form DTY network silk; S4. Plasma treatment is performed on the DTY network yarn to improve the normal moisture regain and adhesion of the DTY network yarn; S5, dipping the DTY network yarn to attach attachments and external functional powder to the surface of the yarn; S6, high temperature curing of the DTY network yarn; S7, clean the DTY network wire three times with deionized water; S8, putting the DTY network wire into an electric heating blast drying oven for drying; Among them, in the above S5, the ultrasonic vibrator vibrates the immersion liquid and the network wires in the immersion liquid to keep the wires loose and ensure the contact area between the wires and the immersion liquid.
[0012] The present invention is further configured as follows: in S2, before the molten raw material is extruded, the molten raw material is first pressurized and maintained, and then the pressure is quickly released to generate tiny bubbles in the molten raw material, and then the molten raw material is extruded to form chambers and cavities on the filaments.
[0013] The present invention is further configured as follows: in said S2, the fineness of the extruded filaments is less than 1.05 dpf.
[0014] The present invention is further configured as follows: in S2, after the rapid pressure relief, the molten raw material is continuously stirred during the extrusion process to break up the bubbles and reduce the volume of the bubbles.
[0015] In summary, the present invention has the following beneficial effects: after the grinding process, the external functional powder in the cavity is embedded in the interior of the polymer, reducing the loss of the external functional powder and ensuring the coverage rate of the external functional powder on the yarn surface, and the cavity is connected with the outside world, so that the external functional powder can maintain the expected function, and at the same time, in some parts with a higher degree of grinding, the outer layer falls off, and the internal functional particles on the surface and inside of the silk strip are exposed, thereby ensuring the heating performance of the yarn, and part of the cavity is connected with the outside world, so that the internal functional powder exposed on the inner wall of the cavity is in contact with the outside world, which increases the surface area of the yarn while increasing the contact area between the internal functional powder and the outside world, further increasing the heating performance of the yarn. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a schematic diagram of the structure of the silk strip in the present invention.
[0017] In the figure: 1, filament; 2, outer layer; 3, polymer; 4, inner functional powder; 5, attachment; 6, outer functional powder; 7, chamber; 8, cavity. DETAILED DESCRIPTION
[0018] The present invention is described in detail below in conjunction with the accompanying drawings and embodiments.
[0019] Embodiment 1: A heating polyester yarn, such as Figure 1 As shown, it includes several strands of filaments 1 and an outer layer 2 coated on the outside of the filaments 1, the filaments 1 include a polymer 3 and an inner functional powder 4, the outer layer 2 includes an attachment 5 and an outer functional powder 6, a plurality of cavities 7 are provided on the surface of the polymer 3, the outer layer 2 covers the surface of the polymer 3 and fills the cavities 7, the inner functional powder 4 is distributed in the polymer 3 and on the surface of the polymer 3, the outer functional powder 6 is distributed in the attachment 5 and on the surface of the attachment 5, the polymer 3 includes sodium polyacrylate, the thickness of the outer layer 2 is smaller than the radius of the filament 1, and the average volume of the outer functional powder is larger than the average volume of the inner functional particles.
[0020] Specifically, the filaments 1 are intertwined with each other to form entanglement points, and the structure of the network yarn increases the plush feel of the yarn after grinding. The outer layer 2 is coated on the outside of the filament 1. Sodium polyacrylate is more viscous after absorbing moisture. The polymer 3 increases the proportion of sodium polyacrylate to make its content not less than 0.7%, thereby increasing the connection strength of the filament 1 to the attachment 5 and the external functional particles after immersion, and at the same time increasing the size of the external functional powder 6, further increasing the probability of the polymer 3 capturing and fixing the external functional powder 6, and the external functional powder 6 can also be more prominent on the yarn relative to the attachment 5 for its fixing effect. The surface of the thread, when being sanded, the attachment 5 is composed of polyester acid and phosphate, and the attachment 5 entrains the external functional powder 6 to adhere to the surface of the polymer 3. After the sanding process, the external functional powder 6 in the chamber 7 is embedded in the interior of the polymer 3, reducing the loss of the external functional powder 6, ensuring the coverage rate of the external functional powder 6 on the yarn surface, and the chamber 7 is connected with the outside world, so that the external functional powder 6 can maintain the expected function. At the same time, in some parts with a higher degree of sanding, the outer layer 2 falls off, and the internal functional particles on the surface and inside of the silk thread 1 are exposed, ensuring the heating performance of the yarn.
[0021] like Figure 1 As shown, polymer 3 also includes polyethylene terephthalate, and the official moisture regain of polymer 3 is not less than 1.2%. The internal functional powder 4 adopts a light-colored tourmaline-heat-generating ceramic powder compound. The zinc content in the filament 1 is not less than 1000ppm, and the germanium content in the filament 1 is not less than 20ppm. Specifically, polyethylene terephthalate has good heat resistance, which reduces the melting generated during the sanding process, and is combined with sodium polyacrylate to make the official moisture regain of polymer 3 not less than 1.2%, that is, by improving the hydrophilicity of the yarn so that the yarn can maintain good antistatic properties, the light-colored tourmaline-heat-generating ceramic powder compound is used. The ceramic powder compound can emit infrared rays with a wavelength of 4-14 microns, thereby showing a heating effect. The internal functional powder 4 and the external functional powder 6 both contain silicon, aluminum, calcium, titanium, zinc, and germanium. The zinc element is antibacterial in the form of zinc oxide. When zinc oxide is excited by photons, it will produce many strong oxidizing substances. These substances will undergo a series of redox reactions with bacteria to kill the bacteria. The germanium element will destroy the molecular protein structure of the bacteria by producing negative ions, which will make the negative ions come into contact with the bacteria, causing structural changes or energy transfer, thereby killing the bacteria. That is, the antibacterial effect is achieved through the zinc and germanium elements.
[0022] like Figure 1As shown, a plurality of cavities 8 are provided inside the polymer 3, and the internal functional powder 4 is also distributed on the inner surface of the cavity 8. Specifically, during grinding, part of the cavity 8 is connected with the outside world, so that the internal functional powder 4 exposed on the inner wall of the cavity 8 is in contact with the outside world, which increases the surface area of the yarn and the contact area between the internal functional powder 4 and the outside world, further increasing the heating performance of the yarn.
[0023] Embodiment 2: A production process of a heating polyester yarn, used to produce the above-mentioned heating polyester yarn, comprises the following steps: S1, melting the masterbatch and adding the internal functional powder 4 to obtain a molten raw material; S2, passing the molten raw material through an extrusion plate to form a filament 1; S3, passing the yarn 1 through a network device to form a DTY network yarn; S4. Plasma treatment is performed on the DTY network yarn to improve the normal moisture regain and adhesion of the DTY network yarn; S5, dipping the DTY network yarn so that the surface of the yarn 1 is attached with attachments 5 and external functional powder 6; S6, high temperature curing of the DTY network yarn; S7, washing the DTY network wire three times with deionized water; S8, putting the DTY network wire into an electric heating blast drying oven for drying; In S5, the ultrasonic vibrator vibrates the immersion liquid and the network wires in the immersion liquid to keep the wire strips 1 loose, thereby ensuring the contact area between the wire strips 1 and the immersion liquid.
[0024] Specifically, the internal functional powder 4 is added when the raw material is in a molten state, and the internal functional powder 4 is dispersed in the molten raw material by stirring and other means, and then the raw material is extruded from the spinneret to obtain the filaments 1. When the filaments 1 pass through the network device, the airflow causes the filaments 1 to move relative to each other, and the filaments 1 are intertwined with each other to finally form DTY network yarns. After plasma treatment, the surface adhesion of the DTY network yarn is improved, and the standard moisture regain of the yarn is further improved. The impregnation solution includes the attachment 5 and the external functional powder 6. During the impregnation process, because the surface adhesion of the DTY network yarn is improved, and the vibration generated by the ultrasonic vibrator, the multiple filaments 1 that are in contact with each other can fully contact with the impregnation solution, thereby increasing the amount of the external functional powder 6 attached to the surface of the filament 1. Then, the impregnated DTY network yarn is preliminarily dried and solidified, and then the reaction precursors on the surface of the DTY network yarn are removed by deionized water to reduce impurities. Finally, a secondary drying and solidification is performed to reduce the shedding of the external functional powder 6 during subsequent use.
[0025] In S2, before the molten raw material is extruded, the molten raw material is first pressurized and maintained, and then the pressure is quickly released to generate tiny bubbles in the molten raw material. The molten raw material is then extruded to form chambers 7 and cavities 8 on the filament 1. Specifically, bubbles are generated in the molten raw material by pressurizing, maintaining the pressure, and quickly releasing the pressure. During extrusion, the molten raw material carries the bubbles through the spinneret. When the filament 1 is cooled, the bubbles form chambers 7 and cavities 8 on the filament 1.
[0026] In S2, the fineness of the extruded filament 1 is less than 1.05dpf. In S2, after rapid pressure relief, the molten raw material is continuously stirred during the extrusion process to break up the bubbles and reduce the volume of the bubbles. Specifically, the shear force and turbulence generated by the stirring help to destroy the aggregation stability of the bubbles, disperse them, and make the individual bubbles smaller and more evenly distributed. While increasing the uniformity of the distribution of cavities 8 and chambers 7 on the yarn, it avoids excessive bubbles causing excessive decreases in the strength of the yarn. Because the size of the bubbles is reduced, the fineness of the filament 1 can also be reduced accordingly. The ideal fineness is 0.69dpf, and the qualified range is below 1.05dpf. The fluff produced by the fine filament 1 during sanding is more delicate, which increases the hand feel.
[0027] The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.
Claims
1. A heating polyester yarn, characterized in that: The invention comprises a plurality of strands of filaments (1) and an outer layer (2) coated on the outside of the filaments (1), wherein the filaments (1) comprise a polymer (3) and an inner functional powder (4), the outer layer (2) comprises an attachment (5) and an outer functional powder (6), a plurality of cavities (7) are provided on the surface of the polymer (3), the outer layer (2) covers the surface of the polymer (3) and fills the cavities (7), the inner functional powder (4) is distributed in the polymer (3) and on the surface of the polymer (3), the outer functional powder (6) is distributed in the attachment (5) and on the surface of the attachment (5), the polymer (3) comprises sodium polyacrylate, and the thickness of the outer layer (2) is less than the radius of the filaments (1).
2. The heating polyester yarn according to claim 1, characterized in that: The polymer (3) further comprises polyethylene terephthalate, and the official moisture regain of the polymer (3) is not less than 1.2%.
3. The heating polyester yarn according to claim 1, characterized in that: The internal functional powder (4) is a light-colored tourmaline-heat-generating ceramic powder compound, the zinc content in the filament (1) is not less than 1000 ppm, and the germanium content in the filament (1) is not less than 20 ppm.
4. The heating polyester yarn according to claim 1, characterized in that: A plurality of cavities (8) are provided inside the polymer (3), and the internal functional powder (4) is also distributed on the inner surface of the cavity (8).
5. The heating polyester yarn according to claim 1, characterized in that: The average volume of the outer functional powder is greater than the average volume of the inner functional particles.
6. A production process of a heating polyester yarn, used to produce the heating polyester yarn as claimed in any one of claims 1 to 5, characterized in that: The following steps are involved: S1, melting the masterbatch and adding the internal functional powder (4) to obtain a molten raw material; S2, allowing the molten raw material to pass through an extrusion plate to form a filament (1); S3, passing the yarn (1) through a network device to form a DTY network yarn; S4. Plasma treatment is performed on the DTY network yarn to improve the normal moisture regain and adhesion of the DTY network yarn; S5, dipping the DTY network yarn so that the surface of the yarn (1) is attached with attachments (5) and external functional powder (6); S6, high temperature curing of the DTY network yarn; S7, clean the DTY network wire three times with deionized water; S8, putting the DTY network wire into an electric heating blast drying oven for drying; In S5, the ultrasonic vibrator vibrates the impregnation liquid and the network wires in the impregnation liquid, so that the wire strips (1) remain loose, thereby ensuring the contact area between the wire strips (1) and the impregnation liquid.
7. The production process of the heating polyester yarn according to claim 6, characterized in that: In S2, before the molten raw material is extruded, the molten raw material is first pressurized and maintained, and then the pressure is quickly released to generate tiny bubbles in the molten raw material. The molten raw material is then extruded to form a cavity (7) and a cavity (8) on the filament (1).
8. The production process of the heating polyester yarn according to claim 7, characterized in that: In said S2, the extruded filaments (1) have a fineness of less than 1.05 dpf.
9. The production process of the heating polyester yarn according to claim 8, characterized in that: In S2, after the pressure is quickly released, the molten raw material is continuously stirred during the extrusion process to break up the bubbles and reduce the volume of the bubbles.