Antibacterial polyester-viscose woven gray fabric and gray fabric manufacturing method

Abstract

The invention relates to the technical field of fabrics, in particular to antibacterial polyester-viscose woven grey cloth which comprises simple-substance threads and composite threads, the simple-substance threads and the composite threads are in one-to-one correspondence with warps and wefts, the simple-substance threads are polyester threads with antibacterial agents added inside, and the composite threads are formed by twisting polyester fibers with the antibacterial agents added inside and viscose fibers. Due to the fact that the hygroscopicity of the polyester is relatively low, external liquid does not easily pass through the polyester, the loss amount of the antibacterial agent in the repeated cleaning process of clothes made of the gray fabric is reduced, and the antibacterial effect effectiveness of the clothes made of the gray fabric is better kept.

Description

Technical Field

[0001] The present application relates to the field of fabric technology, and in particular to an antibacterial polyester-viscose woven grey fabric and a method for manufacturing the grey fabric. Background Art

[0002] Grey cloth refers to fabric that has been woven into shape but not yet dyed. Woven grey cloth is made of warp and weft yarns interlaced. At the same time, woven grey cloth is a blend of polyester and viscose fibers to obtain polyester-viscosity woven grey cloth, which makes the cloth durable and comfortable.

[0003] Since polyester-viscose grey fabrics have good hygroscopicity, the inside of clothes made of them are easily affected by moisture in the rainy season and breed bacteria. For this reason, the polyester-viscose grey fabrics need to have certain antibacterial properties. For example, an antibacterial and mildew-proof polyester-viscose woven grey fabric with announcement number CN214927771U has a corresponding antibacterial and anticorrosive layer arranged in the grey fabric. However, during the long-term wearing of the clothes, the antibacterial layer is easily worn and fallen off, which greatly reduces the antibacterial performance of the clothes.

[0004] For this reason, during the manufacturing process of some grey cloths, antibacterial agents are added at the initial stage of spinning so that the antibacterial agents are present inside and outside the yarn. For example, a viscose fiber containing a natural antibacterial agent and a preparation method thereof with publication number CN102926013A obtains the viscose stock solution at the initial stage of wet spinning, mixes the antibacterial agent and the viscose stock solution, and then performs spinning.

[0005] Regarding the above-mentioned related technologies, due to the excellent hygroscopicity of viscose fiber itself, liquid can easily flow from the inside of the viscose fiber, so that under the influence of multiple washing of clothes, sweat stains, etc., even the antibacterial agent inside the viscose fiber can easily be lost, causing the antibacterial effect of the clothes to decline rapidly or even become ineffective. Summary of the invention

[0006] In order to prolong the effective duration of the antibacterial effect as much as possible, the present application provides an antibacterial polyester-viscose woven grey fabric and a method for manufacturing the grey fabric.

[0007] In a first aspect, the present application provides an antibacterial polyester-viscose woven fabric adopts the following technical solution.

[0008] The invention discloses an antibacterial polyester-viscose woven grey cloth, comprising a single thread and a composite thread which correspond to warp and weft in a one-to-one manner. The single thread is a polyester yarn with an antibacterial agent added therein, and the composite thread is formed by twisting polyester fiber with an antibacterial agent added therein and viscose fiber.

[0009] By adopting the above technical solution, the antibacterial agent is added to the inside of the polyester. The hygroscopicity of polyester is weaker than that of viscose fiber, so that the antibacterial agent in the polyester is not easy to be lost, thereby ensuring the durability of the antibacterial effect, and the polyester fiber with the antibacterial agent and the viscose fiber are twisted into a yarn, so that the viscose fiber that is easily diluted is not easy to produce pathogens, ensuring that the clothes made of the grey cloth of the present application have better antibacterial properties as a whole.

[0010] In a second aspect, the present application provides a method for manufacturing grey cloth adopts the following technical solution.

[0011] A method for manufacturing grey cloth, for manufacturing the above-mentioned antibacterial polyester-viscose woven grey cloth, specifically comprises the following steps.

[0012] Step 1, melting the polyester chips to obtain a polyester melt; Step 2, adding an antibacterial agent composed of zinc oxide and titanium dioxide nanoparticles into the polyester melt and stirring; Step 3, sequentially spinning, cooling, stretching and winding the stirred polyester melt to obtain polyester fiber; Step 4, obtaining viscose fiber by wet spinning; Step 5, twisting the polyester fiber and the viscose fiber to obtain a composite thread, and spinning the polyester fiber into a single-quality thread; Step 6: Weave the composite yarn and the single-quality yarn into a grey fabric product by warp and weft.

[0013] By adopting the above technical solution, a powdered granular antibacterial agent is added to the polyester melt to produce polyester fibers containing the antibacterial agent, so that the antibacterial properties of clothing made from the obtained grey cloth product are maintained longer.

[0014] Optionally, in step 2, the polyester melt is first divided into several small portions using a split stirring device, and the antibacterial agent is also divided into several small portions, each small portion of the antibacterial agent is added to a corresponding small portion of the polyester melt, and each small portion of the polyester melt is stirred synchronously. After each small portion of the polyester melt is combined after stirring, step 3 is performed.

[0015] By adopting the above technical solution, the polyester melt and the antibacterial agent in powdered granules can be fully mixed at a faster speed, so that polyester fibers with uniform distribution of the antibacterial agent can be obtained with higher efficiency.

[0016] Optionally, the split stirring equipment includes an upper main tank for the polyester melt to enter, several sub-gear pumps connected to the upper main tank, several sub-tanks connected to each gear pump one by one, a main gear pump connected to all the sub-tanks, a lower main tank connected to the main gear pump, a pneumatic conveying pump connected to the sub-tank for adding an antibacterial agent, and a sub-agitator arranged in the sub-tank to stir each small portion of the polyester melt.

[0017] By adopting the above technical solution, multiple gear pumps and multiple pneumatic conveying pumps are used to more accurately control the amount of polyester melt and antimicrobial agent in each sub-tank, so that the amount of antimicrobial agent distributed in the polyester melt sent from each sub-tank to the lower main tank is relatively consistent, and there is no need to stir and mix the polyester melt collected in the lower main tank for a long time.

[0018] Optionally, melt heat conduction pipes are provided in the wall thickness of the upper main tank, the sub-tanks and the lower main tank, and heat conduction oil is circulated and transported in the melt heat conduction pipes.

[0019] By adopting the above technical solution, the temperature of the polyester melt is maintained, the fluidity of the polyester melt is ensured not to be too poor, and the stirring efficiency is effectively improved.

[0020] Optionally, both the upper main tank and the lower main tank are provided with a main agitator for stirring.

[0021] By adopting the above technical solution, the temperature of each part of the polyester melt is made relatively consistent, so as to ensure that the fluidity of each part of the polyester melt is good.

[0022] Optionally, all the pneumatic conveying pump feed ports are connected to the same particle mixing tank, which is connected to two particle adding tubes for conveying zinc oxide nanoparticles and titanium dioxide nanoparticles in a one-to-one correspondence. The two particle adding tubes are located in the particle mixing tank at one end, close to each other and facing each other. The particle mixing tank is provided with a particle stirring portion for stirring and mixing the zinc oxide and titanium dioxide nanoparticles.

[0023] By adopting the above technical solution, the two granulation tubes will offset the corresponding two antimicrobial agent powder particles when they are initially fed into the granulation tank, so that the two antimicrobial agent particles can be preliminarily mixed, and then the particle stirring part will stir for a certain period of time to finally obtain a fully mixed antimicrobial agent, and then the antimicrobial agent will be added to the polyester melt to speed up the mixing speed between the polyester melt and the two antimicrobial agent powder particles.

[0024] Optionally, the particle stirring part includes a rotating shaft rotatably connected to the inner wall of the mixing tank and away from the axis of the mixing tank, a mixing ring gear located inside the mixing tank and capable of rotating, a shaft gear coaxially fixedly connected to the rotating shaft and meshing with the mixing ring gear, a gear sleeve through which the rotating shaft passes and surrounds the shaft gear and the mixing ring gear, a rotating shaft motor driving the rotating shaft to rotate, and a stirring blade passing through the bottom of the gear sleeve and fixedly connected to the bottom surface of the mixing ring gear, and the axis of the mixing tank is located at the center between the two particle adding tubes.

[0025] By adopting the above technical solution, the rotating shaft will not pass through between the two particle adding tubes, so as to reduce the obstruction caused by the rotating shaft to the zinc oxide nanoparticles and the titanium dioxide nanoparticles during the counter-mixing process.

[0026] Optionally, a particle heat conduction pipe capable of transmitting heat conduction oil is provided in the inner wall thickness of the particle mixing tank, the heating temperature of the particle heat conduction pipe is higher than the melting point of the polyester chips, and a dehumidification pipe is connected to the upper part of the particle mixing tank.

[0027] By adopting the above technical scheme, the temperature of the sterilizer particles can be raised to a temperature close to that of the polyester melt to dry the sterilizer particles, and the temperature drop of the polyester melt caused by adding the sterilizer particles to the polyester melt can be reduced, so that the polyester melt maintains good fluidity, so that the polyester melt and the sterilizer can be quickly and fully mixed.

[0028] Optionally, the inner top surface of the sub-tank is rotatably connected to a particle ring, the inner part of the sub-tank is fixedly connected to an inner tube connected to the discharge port of a pneumatic conveying pump, the particle ring is provided with a ring channel opposite to the inner tube, the bottom surface of the ring channel is provided with several openings passing through the axis of the particle ring, the sub-agitator is coaxially fixedly connected to a middle gear, the middle gear is meshed with a side gear rotatably connected to the sub-tank, and the side gear is meshed with a sub-tank ring gear coaxially fixedly connected to the inner ring of the particle ring.

[0029] By adopting the above technical solution, the sterilizer particles are evenly distributed into the polyester melt through several passages, and the rotation directions of the particle ring and the sub-agitation device are opposite. Compared with the particle ring and the sub-agitation device rotating in the same direction, the sterilizer particles can be more evenly delivered to the polyester melt, thereby accelerating the thorough mixing between the polyester melt and the sterilizer particles.

[0030] In summary, the present application includes at least the following beneficial effects: The antibacterial agent is added to the polyester, and the hygroscopicity of polyester is weaker than that of viscose fiber, so that the antibacterial agent in the polyester is not easily lost, thereby ensuring the durability of the antibacterial effect, and the polyester fiber with the antibacterial agent and the viscose fiber are twisted into a yarn, so that the viscose fiber that is easily diluted is not easy to produce pathogens, ensuring that the clothing made of the grey cloth of the present application has better antibacterial properties as a whole. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a flowchart of the steps of a method for manufacturing grey cloth of the present application; Figure 2 This is a system diagram of a split stirring device in a method for manufacturing grey cloth in the present application; Figure 3 It is a schematic diagram of the structure of the granule mixing tank in cross section; Figure 4 It is a schematic diagram of the structure with the tank cut away.

[0032] Explanation of the reference numerals in the accompanying drawings: 1. upper main tank; 2. gear pump; 3. sub-tank; 31. channel; 32. middle gear; 33. side gear; 34. sub-tank ring gear; 35. blade mouth; 4. main gear pump; 41. gear sleeve; 42. shaft motor; 43. stirring blade; 44. particle heat transfer pipe; 45. dehumidification pipe; 46. main agitator; 47. particle ring; 48. inner tube; 49. annular channel; 5. lower main tank; 51. pneumatic conveying pump; 52. sub-agitator; 53. melt heat transfer pipe; 54. particle mixing tank; 55. particle adding pipe; 56. particle stirring part; 57. shaft; 58. particle mixing ring gear; 59. shaft gear. DETAILED DESCRIPTION

[0033] The present application is further described in detail below in conjunction with the accompanying drawings.

[0034] The embodiment of the present application discloses an antibacterial polyester-viscose woven fabric, comprising a single-quality thread as a warp and a composite thread as a weft. The single-quality thread is a polyester yarn with an antibacterial agent added inside. The antibacterial agent may be zinc oxide and titanium dioxide nanoparticles. The composite thread is formed by twisting polyester fibers and viscose fibers with an antibacterial agent added inside.

[0035] The implementation principle of an antibacterial polyester-viscose woven fabric in an embodiment of the present application is as follows: an antibacterial agent is added to the inside of the polyester yarn so that the antibacterial agent is not easily lost excessively after the clothes made of the fabric of the present application are washed multiple times, and the viscose fiber and the polyester fiber are twisted together so that bacteria are not easily bred in the water-absorbent viscose fiber.

[0036] The present application also discloses a method for manufacturing a grey cloth. Figure 1 , specifically including the following steps.

[0037] Step 1, melting the polyester chips to obtain a polyester melt; Step 2, first use a split stirring device to divide the polyester melt into several small portions, and also divide the antibacterial agent composed of zinc oxide and titanium dioxide nanoparticles into several small portions, each small portion of the antibacterial agent is added to a corresponding small portion of the polyester melt, and each small portion of the polyester melt is stirred synchronously, and each small portion of the polyester melt after stirring is merged; Step 3, sequentially spinning, cooling, stretching and winding the stirred polyester melt to obtain polyester fiber; Step 4, obtaining viscose fiber by wet spinning; Step 5, twisting the polyester fiber and the viscose fiber to obtain a composite thread, and spinning the polyester fiber into a single-quality thread; Step 6: Weave the composite yarn and the single-quality yarn into a grey fabric product by warp and weft.

[0038] Reference Figure 2, wherein the split stirring device includes an upper main tank 1 for the polyester melt to enter, and the bottom of the upper main tank 1 is connected to several sub-gear pumps 2, and the discharge port of each sub-gear pump 2 is connected to a sub-tank 3, so that an equal amount of polyester melt is fed into each sub-tank 3. Each sub-tank 3 is connected to a pneumatic conveying pump 51 for adding an equal amount of antibacterial agent, and each sub-tank 3 is also equipped with a sub-agitator 52 for mixing the polyester melt and the antibacterial agent. Each sub-tank 3 is connected to the same main gear pump 4, and the discharge port of the main gear pump 4 is connected to the lower main tank 5, so that each portion of the fully mixed polyester melt can be merged for subsequent spinning treatment.

[0039] Reference Figure 2 The upper main tank 1, the sub-tank 3 and the lower main tank 5 are all provided with melt heat conduction pipes 53 in the wall thickness. The melt heat conduction pipes 53 are continuously transmitted with heat conduction oil of a certain temperature through the external heat conduction oil heater and the heat conduction oil circulation pump, so that the upper main tank 1, the sub-tank 3 and the lower main tank 5 are maintained at a suitable temperature, so that the polyester melt maintains good fluidity. In addition, the upper main tank 1 and the lower main tank 5 are both equipped with a main agitator 46, so that the temperature inside and outside of the polyester melt is not easy to have a large difference.

[0040] Reference Figure 2 and Figure 3 , each pneumatic conveying pump 51 is connected to a mixing tank 54 at the feed port, and each mixing tank 54 is fixedly connected and connected to a group of two adding tubes 55 at the top, and the two adding tubes 55 in the same group are arranged opposite to each other, and the axis of the mixing tank 54 is located in the middle of the two adding tubes 55, and the two adding tubes 55 in the same group pneumatically convey the zinc oxide nanoparticles and the titanium dioxide nanoparticles one by one, so that the zinc oxide and titanium dioxide nanoparticles fed into the mixing tank 54 through the adding tubes 55 are preliminarily mixed. Each mixing tank 54 is equipped with a particle stirring part 56 for stirring and mixing the zinc oxide and titanium dioxide nanoparticles. In addition, a particle heat conduction pipe 44 is arranged around the wall thickness of each mixing tank 54, and the particle heat conduction pipe 44 and the melt heat conduction pipe 53 are consistent with each other to circulate the heat transfer oil, so that the antibacterial agent particles are heated to a temperature close to that of the polyester melt. The upper part of the mixing tank 54 is connected to a dehumidification pipe 45 for discharging water vapor in time.

[0041] Reference Figure 3The particle stirring part 56 includes a rotating shaft 57 rotatably connected to the periphery of the top surface of the particle mixing tank 54. The rotating shaft 57 is vertical. The upper part of the particle mixing tank 54 is detachably connected to a rotating shaft motor 42 whose output shaft is coaxially detachably connected to the rotating shaft 57. The inner wall of the circumference of the particle mixing tank 54 is fixedly connected to a gear sleeve 41. The bottom end of the rotating shaft 57 located in the particle mixing tank 54 is coaxially detachably connected to a shaft gear 59. The rotating shaft 57 is penetrated through the gear sleeve 41 so that the shaft gear 59 is located in the gear sleeve 41. A particle mixing ring gear 58 is coaxially rotatably connected in the gear sleeve 41. The shaft gear 59 is meshed with the particle mixing ring gear 58. The bottom surface of the gear sleeve 41 is coaxially formed with an annular blade opening 35. The bottom surface of the particle mixing ring gear 58 is coaxially detachably connected to a plurality of stirring blades 43 around its own axis, so as to fully mix the antibacterial agent particles in the particle mixing tank 54.

[0042] Reference Figure 4 , the top surface of each sub-tank 3 is coaxially connected to a particle ring 47, the bottom surface of the particle ring 47 is higher than the height of the opening position connected to the sub-gear pump 2 in the sub-tank 3, and the circumferential outer wall of the particle ring 47 is in contact with the circumferential inner wall of the sub-tank 3. An L-shaped inner tube 48 is fixedly connected to the inside of the sub-tank 3, and a ring channel 49 is coaxially opened on the horizontal upper surface of the particle ring 47. The bottom end of the vertical section of the inner tube 48 is located in the upper part of the ring channel 49. The inner bottom surface of the ring channel 49 is opened with several vertical openings 31 around its own axis, and each opening 31 runs through the bottom surface of the particle ring 47. The stirring shaft of each sub-agitator 52 is coaxially fixedly connected with a middle gear 32, and the middle gear 32 is meshed with a side gear 33 that is rotatably connected to the top surface of the inner part of the sub-tank 3. The inner circumferential inner wall of the particle ring 47 is coaxially fixedly connected with a sub-tank ring gear 34 that is meshed with the side gear 33, so that the sub-agitator 52 and the particle ring 47 rotate synchronously in the opposite direction, so as to evenly put the antibacterial agent particles into the upper part of the polyester melt in the sub-tank 3, so that the polyester melt and the antibacterial agent are mixed more evenly. In addition, the inner circumferential inner wall of the bottom of the particle ring 47 is attached to the stirring shaft of the sub-agitator 52 to reduce the possibility of contamination of the polyester melt below.

[0043] The implementation principle of a grey cloth manufacturing method of an embodiment of the present application is: first, the polyester melt in the upper main tank 1 is evenly divided into several small portions, and then an equal amount of antibacterial agent is added to the small portions of polyester melt to allow the polyester melt and the antibacterial agent to mix more quickly, and then each small portion of the mixed polyester melt is collected in the lower main tank 5 to be transported for subsequent spinning treatment.

[0044] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An antibacterial polyester-viscose woven fabric, characterized in that: The invention comprises a single-quality thread and a composite thread which are warp threads and weft threads in one-to-one correspondence. The single-quality thread is a polyester yarn with an antibacterial agent added inside, and the composite thread is formed by twisting the polyester fiber with an antibacterial agent added inside and the viscose fiber.

2. A method for manufacturing grey fabric, for manufacturing the antibacterial polyester-viscose woven grey fabric according to claim 1, characterized in that: The specific steps include: Step 1, melting the polyester chips to obtain a polyester melt; Step 2, adding an antibacterial agent composed of zinc oxide and titanium dioxide nanoparticles into the polyester melt and stirring; Step 3, sequentially spinning, cooling, stretching and winding the stirred polyester melt to obtain polyester fiber; Step 4, obtaining viscose fiber by wet spinning; Step 5, twisting the polyester fiber and the viscose fiber to obtain a composite thread, and spinning the polyester fiber into a single-quality thread; Step 6: Weave the composite yarn and the single-quality yarn into a grey fabric product by warp and weft.

3. A method for manufacturing grey cloth according to claim 2, characterized in that: In step 2, the polyester melt is first divided into several small portions using a split stirring device, and the antibacterial agent is also divided into several small portions. Each small portion of the antibacterial agent is added to a corresponding small portion of the polyester melt, and each small portion of the polyester melt is stirred synchronously. After each small portion of the polyester melt is combined after stirring, step 3 is performed.

4. A method for manufacturing grey cloth according to claim 3, characterized in that: The split stirring device comprises an upper main tank (1) for polyester melt to enter, a plurality of sub-gear pumps (2) connected to the upper main tank (1), a plurality of sub-tanks (3) connected to each gear pump (2) in a one-to-one correspondence, a main gear pump (4) connected to all the sub-tanks (3), a lower main tank (5) connected to the main gear pump (4), a pneumatic conveying pump (51) connected to the sub-tanks (3) for adding an antibacterial agent, and a sub-stirrer (52) provided in the sub-tanks (3) for stirring each small portion of the polyester melt.

5. A method for manufacturing grey cloth according to claim 4, characterized in that: The upper main tank (1), the sub-tanks (3) and the lower main tank (5) are all provided with melt heat conduction pipes (53) in the wall thickness, and heat conduction oil is circulated and transported in the melt heat conduction pipes (53).

6. A method for manufacturing grey cloth according to claim 5, characterized in that: The upper main tank (1) and the lower main tank (5) are both provided with a main agitator (46) for agitation.

7. A method for manufacturing grey cloth according to claim 4, characterized in that: The feed ports of all the pneumatic conveying pumps (51) are connected to the same particle mixing tank (54), and the particle mixing tank (54) is connected to two particle adding tubes (55) for conveying zinc oxide nanoparticles and titanium dioxide nanoparticles in a one-to-one correspondence. The two particle adding tubes (55) are located in the particle mixing tank (54) at one end and are arranged close to each other and facing each other. The particle mixing tank (54) is provided with a particle stirring portion (56) for stirring and mixing the zinc oxide and titanium dioxide nanoparticles.

8. A method for manufacturing grey cloth according to claim 7, characterized in that: The particle stirring portion (56) comprises a rotating shaft (57) rotatably connected to the inner wall of the particle mixing tank (54) and away from the axis of the particle mixing tank (54), a particle mixing ring gear (58) located inside the particle mixing tank (54) and rotatable, a shaft gear (59) coaxially fixedly connected to the rotating shaft (57) and meshing with the particle mixing ring gear (58), a gear sleeve (41) through which the rotating shaft (57) passes and which surrounds the shaft gear (59) and the particle mixing ring gear (58), a rotating shaft motor (42) for driving the rotating shaft (57) to rotate, and a stirring blade (43) passing through the bottom of the gear sleeve (41) and fixedly connected to the bottom surface of the particle mixing ring gear (58). The axis of the particle mixing tank (54) is located at the center between the two particle adding tubes (55).

9. A method for manufacturing grey cloth according to claim 7, characterized in that: A particle heat conduction pipe (44) capable of transmitting heat conduction oil is provided in the inner wall thickness of the particle mixing tank (54). The heating temperature of the particle heat conduction pipe (44) is higher than the melting point of the polyester chips. The upper part of the particle mixing tank (54) is connected to a moisture removal pipe (45).

10. A method for manufacturing grey cloth according to claim 4, characterized in that: The top surface of the inner part of the sub-tank (3) is rotatably connected to a particle ring (47); the inner part of the sub-tank (3) is fixedly connected to an inner tube (48) connected to a discharge port of a pneumatic conveying pump (51); the particle ring (47) is provided with a ring channel (49) directly opposite to the inner tube (48); the bottom surface of the ring channel (49) is provided with a plurality of openings (31) extending through the axis of the particle ring (47); the sub-agitation device (52) is coaxially fixedly connected to a middle gear (32); the middle gear (32) is meshed with a side gear (33) rotatably connected to the sub-tank (3); the side gear (33) is meshed with a sub-tank ring gear (34) coaxially fixedly connected to the inner ring of the particle ring (47).

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