High-decontamination antibacterial cleaning cloth

Abstract

The invention discloses high-decontamination antibacterial cleaning cloth and a manufacturing process thereof, and belongs to the technical field of cleaning cloth. According to the cleaning cloth, tows composed of single 10-50 D triangular chemical fiber antibacterial filaments serve as raw materials, the cleaning cloth is produced through weaving, non-textured tows are adopted as warp yarns used for weaving, and textured tows are adopted as weft yarns used for weaving. The product provided by the invention has the characteristics of good detergency, relative softness and good hand feeling, can avoid the situation that the strength of a steel wire of a steel wire cleaning product is too strong, and also eliminates the problem that common fiber cleaning cloth is too soft and insufficient in detergency. By the adoption of the technical scheme, the decontamination capacity of the cleaning cloth can be improved, the friction force of the surface of the cleaning cloth can be enhanced, the effect of improving the decontamination performance of the cleaning cloth is achieved, the cleaning cloth has the antibacterial performance, and the practicability and effectiveness of the cleaning cloth can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of cleaning cloths, and in particular to a highly decontaminating and antibacterial cleaning cloth and its manufacturing process. Background Art

[0002] A cleaning cloth refers to a fabric specifically used for cleaning. Dishcloths, dishwashing cloths, back scrubbers, scouring pads, etc. in daily life are all cleaning cloths. Compared with ordinary fabrics, cleaning cloths have better water absorption, decontamination and dirt storage properties, and can remove and carry away the stains on the cleaning part.

[0003] Existing cleaning cloths are relatively soft, with slender and dense cleaning coil fluff. They have poor cleaning ability for stubborn stains. When wiping water stains, due to the high density of the coil fluff, it is difficult for water to be absorbed by the inner coil fluff, and the fluff fibers are prone to breakage and hair loss, affecting the cleaning effect. To improve, Chinese Patent CN118147813A discloses a high-low loop warp knitted cleaning cloth and its preparation process, and a warp knitted cleaning cloth fabric is produced at high speed by a warp knitting machine.

[0004] Currently used cleaning supplies include wire-like products with stainless steel toughness, such as stainless steel cleaning balls; scouring pads, which are fiber-fluffy cloths with emery coated on the surface; these have good effects on cleaning hardened dirt, but there are also disadvantages, such as the tough steel wire is easy to hurt hands and is easy to damage the cleaning surface.

[0005] There are also natural filamentous aggregates, such as loofahs; bath towels are made of relatively soft fibers and show different twist degrees in the warp and weft directions during weaving, such as star bath towel cloths; cleaning cloths also have the defect of being prone to bacterial growth. Summary of the Invention

[0006] The purpose of the present invention is to solve the above technical problems and provide a highly decontaminating and antibacterial cleaning cloth and its manufacturing process. The cleaning cloth has good decontamination and dirt storage performance, is not easy to shed hair, and is easy to clean the stains adsorbed on the cleaning cloth, with high practicability.

[0007] In order to achieve the above technical purpose and meet the above technical requirements, the technical solution adopted by the present invention is: a highly decontaminating and antibacterial cleaning cloth is composed of the following substances in parts by weight: 95 - 99.8 parts of fiber-grade polymer pellets, 0.2 - 5 parts of antibacterial agent; the antibacterial agent is a water-insoluble hydrophobic guanidine-based antibacterial agent; The cleaning cloth is a woven fabric, including warp yarns and weft yarns that are intertwined. The warp yarns and the weft yarns adopt a yarn bundle composed of single 10 - 50D antibacterial profiled filaments, and the number of yarn bundle roots is 12 - 24f; the warp yarns do not use texturized yarn bundles, and the weft yarns use texturized yarn bundles. The crimp number of the texturized yarn bundles of the weft yarns is 500 - 1500 per meter; several folds are formed on the surface of the cleaning cloth, and the cloth surface is in an intermittent convex shape; The high-decontamination antibacterial cleaning cloth is prepared by the following method: (1) Preparation of fiber-forming polymer antibacterial masterbatch: Mix the fiber-forming polymer powder and the hydrophobic guanidine antibacterial agent in a high-speed mixer at a ratio of 10-20% of the antibacterial agent; add the mixture to the feed hopper of the screw extruder, start the machine equipment, and carry out melt extrusion, cooling, and pelletizing to obtain the fiber-forming polymer antibacterial masterbatch; the melting temperature is set 20-50°C higher than the melting point of the fiber-forming polymer; (2) Preparation of profiled antibacterial filament bundle: Chip mixing and drying: Weigh the fiber-forming polymer antibacterial masterbatch chips prepared in step (1) and the fiber-forming polymer chips of the same type according to the weight ratio after conversion, mix them to obtain mixed chips; dry them in a chip drying system to make the moisture content of the mixed chips meet the spinning requirements; Spinning: The dried mixed chips are extruded into a melt through a screw extruder, and the spinning assembly uses a profiled spinneret to spin a fully drawn filament bundle with a specification of 120-600D / 12f and a profiled fiber cross-section; (3) Texturing: Use a split-filament textured yarn machine to perform non-draft texturing to obtain a profiled antibacterial textured yarn bundle, and the crimp number of the yarn bundle is 500-1500 per meter; (4) Machine weaving: Use a machine weaving process to process the high-decontamination antibacterial cleaning cloth, and the warp yarn uses a profiled antibacterial filament bundle, and the weft yarn uses a profiled antibacterial textured yarn bundle; (5) Elastic recovery treatment: Heat and recover the woven cloth obtained to obtain a cleaning cloth with several wrinkles formed on the surface and intermittent protrusions on the cloth surface.

[0008] Preferably: The fiber-grade polymer granule is 97-99.8 parts, and the antibacterial agent is 0.2-3 parts.

[0009] Preferably: The profiled antibacterial filament bundle is a triangular antibacterial filament bundle.

[0010] Preferably: The fiber-grade polymer granule is polyester, polyamide or polypropylene.

[0011] Preferably: The fiber-grade polymer granule is hydrophilic cationic polyester chip (ECDP).

[0012] The fiber-grade polymer (fiber-forming polymer) pellets described in the present invention are of the types and grades conventionally used in chemical fiber spinning, such as polyethylene terephthalate chips (PET); polyamide 6 (PA6) and polyamide 66 (PA66) chips, cationic dyeable polyester chips (ECDP) polymerized by adding a third or fourth component, and polypropylene chips (PP chips) commonly used in spinning, etc. The antibacterial agent is a commercially available water-insoluble hydrophobic guanidine antibacterial agent, which has good heat resistance characteristics and can be used in the chemical fiber spinning process. Its function is to inhibit the attachment and reproduction of typical bacteria such as Escherichia coli and Staphylococcus aureus on the cleaning cloth.

[0013] When using ECDP to spin and prepare the raw silk for the cleaning cloth, the ECDP melt has a large apparent viscosity and a relatively complex macromolecular structure. It is necessary to appropriately increase the spinning temperature; reduce the pump supply rate, reduce the spinning speed, reduce the side blowing temperature and air pressure, and increase the breaking elongation of the raw silk. After taking these measures, the service life of the filter and the spinneret pack can be increased, and these requirements are reflected in the specific embodiments to better demonstrate the practicality of the manufacturing process of the present invention.

[0014] The highly decontaminating and antibacterial cleaning cloth provided by the present invention uses a triangular fiber cross-section, which on the one hand improves the decontamination ability, and on the other hand increases the voids between the fibers, improving the dirt storage capacity of the cleaning cloth. At the same time, compared with the cleaning cloth with post-treatment antibacterial, the antibacterial agent is added during spinning in the present invention, having a permanent antibacterial effect.

[0015] The production process of the product of the present invention can utilize the existing equipment for producing split-filament master yarns, as long as the corresponding profiled spinneret components are replaced; since there is no need for splitting filaments, the distribution of the filaments on the spinneret plate does not need to be considered during spinning production, and the number of filament bundles can also be adjusted according to the flexibility requirements of the fibers and the cleaning cloth, which can improve production efficiency. The texturing process also utilizes the existing master yarn texturing equipment without the need to build a new production line.

[0016] Compared with the traditional structure, the beneficial effects of the present invention are as follows: 1. The fabric of the present invention has obvious intermittent protrusions, large friction, strong astringency, good decontamination ability and good decontamination effect.

[0017] 2. By adding a high-temperature resistant antibacterial agent during spinning, the cleaning cloth has a permanent antibacterial effect.

[0018] 3. The fineness of the single filament can be adjusted during spinning to change the flexibility and rigidity of the cleaning cloth, making it relatively soft and good in hand feeling, suitable for a variety of application scenarios, and can replace various uses of products with strong rigidity such as steel wire cleaning balls and products with flexibility requirements such as bath towels.

[0019] 4. The highly detergency and antibacterial cleaning cloth prepared by the present invention also has excellent antibacterial effects against common representative bacteria such as Escherichia coli and Staphylococcus aureus. When the addition amount of the antibacterial agent is above 0.3%, the antibacterial rates against the above two kinds of bacteria both reach above 99.9%.

[0020] 5. The cleaning cloth manufactured by using a fiber bundle with a triangular fiber cross-section and a single fiber fineness of 10 - 30 D provided by the present invention combines high detergency and antibacterial properties, which helps to improve the practicability and effectiveness of the cleaning cloth. Except for the technical solution of the present invention, no other similar reports have been found. Detailed implementation manners

[0021] The present invention will be further described below.

[0022] 1. Preparation of ECDP antibacterial masterbatch Weigh 20 kg of ECDP powder (cationic dyeable polyester chips produced by the polyester plant of Shanghai Petrochemical Co., Ltd., crushed to 20 - 60 meshes with a slicing crusher) and 4 kg of hydrophobic guanidine antibacterial agent, and mix them in a 75L high-speed mixer for 20 minutes. Add the mixed material into the feed hopper of the screw extruder, start the machine equipment, and conduct melt extrusion, cooling, and pelletizing to obtain an ECDP antibacterial masterbatch with an antibacterial agent content of 20%. The temperature settings of the screw extruder are as follows: zone 1: 220 °C, zone 2: 265 °C, zones 3 - 8: 275 °C, extrusion head: 270 °C, rotation speed: 280 rpm, screw current: 15 A, production speed: 20 kg / hour.

[0023] 2. Preparation of triangular antibacterial fiber bundle Weigh 1000 kg of ECDP chips and 50 kg of ECDP antibacterial masterbatch in batches, mix them in batches in a 500L rotary drum, and pre-crystallize at 120 °C for 1 h to obtain pre-crystallized mixed chips. Add them into a continuous drying system for chips with a drying capacity of 40 kg / hour, dry at 160 °C for 8 - 12 h, and the moisture content < 30 ppm.

[0024] Spinning: The dried mixed chips are extruded into a melt through a screw extruder. The spinning pack uses a Y-shaped spinneret to spin a fully drawn yarn bundle with a specification of 120 / 12f (single filament 10 D) and a triangular cross-section.

[0025] Spinning process flow: mixed chip bin - continuous drying system - screw extruder - pre-filter - metering pump - pack - side blow cooling - oiling on the oil nozzle - first hot roll (GR1) - second hot roll (GR2) - winding - inspection - packaging. The spinning process parameters are shown in Table 1: Table 1 Spinning process parameter table

[0026] The virgin fibers are successively subjected to side blowing cooling, oiling, and hot roll drawing to obtain a triangular cross-section tow. Among them, the temperature of GR1 is 60 - 75°C, the speed is 2500 m / min, the temperature of GR2 is 150°C, and the winding speed is 4200 m / min. The fiber breaking strength is 3.0 cN / dtex, and the breaking elongation is 35%.

[0027] 3. Texturing: Using a fiber splitting master yarn texturing machine for non-drawing texturing, the hot box temperature is 195°C, the production speed is 110 m / min, the small rotor speed is 18000 rpm, to obtain a triangular antibacterial textured tow, and the tow crimp number is 1000 - 1250 per meter.

[0028] 4. Machine weaving: Using a 2-strand 120 / 12f specification (monofilament 10D), fully drawn tow with a triangular cross-section, that is, a 240 / 24f tow as raw material, and processing it by machine weaving technology to obtain a high-decontamination antibacterial cleaning cloth. The warp yarn uses a triangular antibacterial tow, and the weft yarn uses a triangular antibacterial textured tow.

[0029] 5. Elastic recovery treatment: The obtained woven cloth is heated and recovered for 15 minutes to obtain a cationic high-decontamination antibacterial cleaning cloth with several wrinkles formed on the surface and local protrusions on the cloth surface.

[0030] 1. Preparation of PA antibacterial masterbatch Weigh 20 kg of PA powder (crushed to 20 - 60 mesh with a slicing crusher) and 2 kg of hydrophobic guanidine antibacterial agent, and mix them in a 75L high-speed mixer for 20 minutes. Add the mixed material to the feed hopper of the screw extruder, start the machine equipment, and perform melt extrusion, cooling, and pelletizing to obtain a PA antibacterial masterbatch with an antibacterial agent content of 10%. The temperature settings of the screw extruder are: zone 1 at 180°C, zone 2 at 220°C, zones 3 - 8 at 250°C, the extrusion head at 245°C, the rotation speed at 280 rpm, the screw current at 12 A, and the production speed at 20 kg / hour.

[0031] 2. Preparation of triangular PA antibacterial tow Batch weigh 1000 kg of PA chips and 50 kg of PA antibacterial masterbatch, batch mix them in a 500L rotary drum, and dry to a moisture content of 300 ppm.

[0032] Spinning: The dried and mixed chips enter the screw extruder through a closed bin to extrude the melt. The spinning pack uses a Y-shaped spinneret to spin a fully drawn tow with a specification of 240D / 12f (monofilament 20D) and a triangular cross-section (antibacterial agent content 0.5%).

[0033] Spinning process flow: Dried and mixed chips - Closed bin - Screw extruder - Metering pump - Spinning pack - Side blowing cooling - Oiling nozzle - First hot roll (GR1) - Second hot roll (GR2) - Winding - Inspection - Packaging.

[0034] The virgin fibers are successively subjected to side blowing cooling, oiling, and hot roll drawing to obtain a triangular cross-section tow. Among them, the temperature of GR1 is 75 °C, the speed is 2500 m / min, the temperature of GR2 is 150 °C, and the winding speed is 4000 m / min. The fiber breaking strength is 3.5 cN / dtex, and the breaking elongation is 35%.

[0035] 3. Texturing: The fiber is texturized without drawing using a fiber splitting master yarn texturing machine. The hot box temperature is 175 °C, the production speed is 100 m / min, and the small rotor speed is 18000 rpm to obtain a triangular antibacterial textured tow. The number of curls of the tow is 1050 - 1250 curls / meter.

[0036] 4. Machine weaving: Using a fully drawn tow with a specification of 240D / 12f (monofilament 20D) and a triangular cross-section, a high-decontamination antibacterial cleaning cloth is processed by machine weaving technology. The warp yarn uses a PA triangular fully drawn antibacterial tow, and the weft yarn uses a PA triangular antibacterial textured tow.

[0037] 5. Elastic recovery treatment: The obtained woven fabric is heated and subjected to recovery treatment for 15 minutes to obtain a cationic high-decontamination antibacterial cleaning cloth with several wrinkles formed on the surface and local protrusions on the cloth surface.

[0038] Machine weaving: Using an interlacing machine method, the warp yarn uses a 240D / 12f PA triangular fully drawn antibacterial tow, and the weft yarn uses a 240D / 24f ECDP triangular antibacterial textured tow.

[0039] Elastic recovery treatment: The obtained woven fabric is heated and subjected to recovery treatment for 15 minutes to obtain a polyester-polyamide high-decontamination antibacterial cleaning cloth with several wrinkles formed on the surface and local protrusions on the cloth surface.

[0040] Testing of the antibacterial ability of the high-decontamination antibacterial cleaning cloth of the present invention.

[0041] The detection method is carried out according to the "Hygiene Requirements for the Safety of Antibacterial Textiles" (GB / T 31713 - 2015). The results are shown in Table 2: Table 2 Antibacterial test results of Examples 1 - 3

[0042] The results show that after adding the antibacterial agent described in the present invention, the antibacterial rate of the prepared antibacterial cleaning cloth against Escherichia coli and Staphylococcus aureus is as high as 99.9%, showing excellent antibacterial effects.

[0043] The above embodiments of the present invention are merely examples clearly illustrating the present invention and are not used to limit the protection scope of the present invention. All equivalent technical solutions also belong to the scope of the present invention. The patent protection scope of the present invention shall be defined by each claim.

Claims

1. A highly decontaminating and antibacterial cleaning cloth, characterized in that: It consists of the following substances in parts by weight: 95 - 99.8 parts of fiber - grade polymer pellets and 0.2 - 5 parts of antibacterial agent; the antibacterial agent is a water - insoluble hydrophobic guanidine - type antibacterial agent. The cleaning cloth is a woven fabric, including warp and weft yarns that interlace with each other. The warp and weft yarns adopt a tow composed of single - root antibacterial profiled filaments with a size of 10 - 50D, and the number of tows is 12 - 24f. The warp tow is an inelastic tow, and the weft tow is an elastic tow. The number of curls of the elastic tow of the weft is 500 - 1500 curls per meter. Several folds are formed on the surface of the cleaning cloth, and the cloth surface is in a discontinuous convex shape. The highly decontaminating antibacterial cleaning cloth is prepared by the following method: (1)Preparation of the fiber - forming polymer antibacterial masterbatch: Mix the fiber - forming polymer powder and the hydrophobic guanidine antibacterial agent in a high - speed mixer in a proportion of 10 - 20% of the antibacterial agent. Add the mixture to the feed hopper of the screw extruder, start the machine equipment, and carry out melt extrusion, cooling, and pelletizing to obtain the fiber - forming polymer antibacterial masterbatch. The melting temperature is set 20 - 50℃ higher than the melting point of the fiber - forming polymer. (2)Preparation of the profiled antibacterial tow: Chip mixing and drying: After conversion according to the weight - part ratio, respectively weigh the fiber - forming polymer antibacterial masterbatch chips prepared in step (1) and the same - type fiber - forming polymer chips, mix them to obtain mixed chips. Dry them in the chip drying system to make the moisture content of the mixed chips meet the spinning requirements. Spinning: The dried mixed chips are extruded into a melt through a screw extruder, and the spinning assembly uses a profiled spinneret to spin a fully - drawn tow with a specification of 120 - 600D / 12f and a profiled fiber cross - section. (3)Texturing: Use a split - fiber master - yarn texturing machine to perform non - drawing texturing to obtain a profiled antibacterial textured tow with the number of curls of the tow being 500 - 1500 curls per meter. (4)Woven fabric production: Use a weaving process to process the highly decontaminating antibacterial cleaning cloth. The warp uses a profiled antibacterial tow, and the weft uses a profiled antibacterial textured tow. (5)Elastic recovery treatment: Heat - treat the obtained woven fabric to obtain a cleaning cloth with several folds formed on the surface and a discontinuous convex cloth surface.

2. The highly decontaminating and antibacterial cleaning cloth according to claim 1, wherein: The fiber - grade polymer pellets are 97 - 99.8 parts, and the antibacterial agent is 0.2 - 3 parts.

3. The high-decontamination antibacterial cleaning cloth according to claim 1, characterized in that: The profiled antibacterial tow is a triangular antibacterial tow.

4. The high-decontamination antibacterial cleaning cloth according to claim 1 or 2, characterized in that: The fiber - grade polymer pellets are polyester, polyamide, or polypropylene.

5. The highly decontaminating and antibacterial cleaning cloth according to claim 4, wherein: The fiber - grade polymer pellets are hydrophilic cationic polyester chips (ECDP).

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