CN114182362A - Component homogenizing method and equipment for melt-blown non-woven fabric production - Google Patents
Component homogenizing method and equipment for melt-blown non-woven fabric production Download PDFInfo
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
- Y02P70/62—Manufacturing or production processes characterised by the final manufactured product related technologies for production or treatment of textile or flexible materials or products thereof, including footwear
Abstract
The invention belongs to the technical field of industrial textiles, and particularly relates to a component homogenizing method and equipment for producing non-woven fabrics by a melt-blowing method. The invention designs and manufactures the melt-blown raw material component uniform system which is convenient and rapid, has high utilization rate of the auxiliary agent and stable product quality, and the mechanical transmission and electrical control system thereof, and solves the problem that the mixed components of the powder auxiliary agent and the granular polymer material used in the existing melt-blown line production are seriously non-uniform.
Description
Technical Field
The invention relates to the technical field of industrial textiles, in particular to a component uniform method and equipment for producing non-woven fabrics by a melt-blowing method.
Background
The main raw material for producing the non-woven melt-blown fabric is a high molecular material, namely high melt index polypropylene, and powder auxiliaries, reclaimed materials and the like are added in the melt-blown fabric production to form a multi-component raw material. The powder auxiliary agent has complex chemical components and unstable chemical properties, is powdery, and is mixed with granular polymer materials by a non-professional common mixing method such as stirring or manual mixing when being mixed with the granular polymer materials, so that the components are difficult to be uniform. If the raw materials are mixed and stirred uniformly below an operation table by a common method and are sucked to a feed inlet of a JWM90 high-temperature (300 ℃) screw extruder above a production operation table by a fan, most powder auxiliaries are easily and instantly and intensively adsorbed and fed, and the high polymer granular materials are relatively lagged, so that the uneven feeding components are directly caused, and the quality and the stability of a melt-blown fabric product are directly influenced.
Therefore, a method for homogenizing components of a high polymer material produced by a melt-blown non-woven fabric and equipment thereof are developed, which are used for solving the technical defect that powder auxiliaries and high polymer granular raw materials are seriously non-uniform in the prior art, and the problem to be solved by engineering technicians in the field is urgently solved.
Disclosure of Invention
In view of the above, the invention designs and manufactures the melt-blown raw material component uniform system which is convenient and rapid, has high utilization rate of the auxiliary agent and stable product quality, and the mechanical transmission and electrical control system thereof.
The invention provides a high polymer material component homogenizer for melt-blown non-woven fabric production. The powder auxiliary agent (the components are tourmaline, barium titanate, SiO2, magnesium fatty acid (150 g-800g of powder auxiliary agent is added per 100Kg of raw material)) and the polymer granular raw material are added into a component homogenizer, the inclination angle of the component homogenizer is 18-23 degrees, the optimal inclination angle is 20 degrees, the inner wall is smooth, the component homogenizer rotates at a constant speed, the setting value adjustment range of the constant speed rotation is 10-20r/min, and the uniform action time is 30-50 min.
The component homogenizer of the invention has the functions of improving the filtration efficiency and precision of the melt-blown cloth, and efficiently preventing viruses, so that the functional quality of the melt-blown cloth reaches the high-end professional level. The powder auxiliary agent is added to improve the storage effect of electric charge after corona electrification of the melt-blown cloth and slow down the attenuation of the electric charge, the mixing uniformity degree of the powder auxiliary agent directly influences various indexes and performances of the melt-blown cloth, and if the powder auxiliary agent is not uniformly mixed, the problems of longitudinal and transverse bidirectional gram weight fluctuation, reduction of electric charge amount, deterioration of uniformity of the electric charge and the like of the melt-blown cloth can be caused.
Ideal uniform component effect: the inclination angle of the component homogenizer is 18-23 degrees, the optimal inclination angle is 20 degrees, the volume utilization rate is 66 percent, and the lower the viscosity of the component is, the lower the moisture content is, the better the homogenizing effect is. The larger the deviation of the parameter fluctuation value, the worse the uniformity effect, and the longer the action time is required.
Under the condition of a certain inclination angle, the uniform rotating speed is adjusted according to the volume utilization rate and the load. High volume utilization rate, low rotation speed when load is large and long acting time. According to the scheme of the invention, the inclination angle of the component homogenizer is 18-23 degrees, the corresponding rotating speed and rotating time are matched according to the inclination angle, the rotating speed adjusting range is 10-20r/min, and the homogenizing action time is 30-50 min. The optimal inclination angle is 20 degrees, the optimal rotating speed is 15r/min, and the optimal acting time is 40 min. When the homogenizer inclination is greater than 23 degrees, because the homogenizer inclination is great, the center is skew, and the focus is unstable, and centrifugal force is big when rotating, and vibrations are great, and volume utilization ratio reduces simultaneously, need reduce the rotational speed during the compounding, extension mixing time, and the compounding effect is relatively poor. When the inclination angle of the homogenizer is less than 18 degrees, the powder auxiliary agent is mainly gathered near the inner wall of the homogenizer, the material body is difficult to turn over during rotation, the rotating speed can be improved, the mixing time is prolonged, and the mixing effect is poor.
Therefore, the inclination angle, the rotating speed and the acting time of the homogenizer are not in a single linear relationship but in a complex composite relationship, and the selection of the parameters plays a crucial role in the homogenizing effect of the homogenizer.
The invention provides a component uniform method and equipment for producing non-woven fabrics by a melt-blowing method. Which comprises the following steps: the device comprises a component homogenizer, a homogenizer inlet, a homogenizer outlet, a homogenizer sliding guide rail, a rolling bearing, a screw extruder inlet, a screw extruder, a transmission chain wheel, a transmission chain, a speed reducer, a main transmission chain wheel and a component homogenizing system frame. The component homogenizer top is provided with the homogenizer entry, and the below is provided with the homogenizer export, and component homogenizer both ends are provided with the bearing, the bearing outside is provided with drive sprocket, drive sprocket passes through drive chain and is connected with main drive sprocket, main drive sprocket is connected with the speed reducer, be equipped with homogenizer sliding guide below the bearing, the screw extruder entry is aimed at to the below of homogenizer export, screw extruder entry and extruder internal connection, the aforesaid is equipped and is fixed in the component homogeneous system frame.
Furthermore, the volume of the component homogenizer is 1.5-1.6 times of the total volume of the required components, the end sockets at two ends of the component homogenizer are standard parts, the material of the end sockets and the material of the cylinder are both stainless steel 316, and the wall thickness is 4 mm. The transmission shafts at both ends are made of stainless steel 316. The core parts with uniform components are designed according to the melt-blown fabric production process technology and the technical requirements on the uniformity of raw material components, and the specific design parameters are preferably length-diameter ratio of 1.5 and volume of 0.35m318-23 degrees of inclination angle and 350kg of load. The material is stainless steel 316, which ensures rigidity not to deform, and is anticorrosive, antirust and anti-pollution.
Furthermore, the power of the power source motor is 0.75kw, the allowable output torque of the manual stepless speed change machine is 152 + 300N · m, the transmission mode is chain transmission, the number of chain wheel teeth Z1= 10-20, Z2= 15-25, the pitch P =19.05 or 15.875, the transmission ratio I = 1.5-1.25 and the transmission center distance of the chain wheel is 600-700 mm.
And designing the number of teeth of a chain wheel, the speed ratio of the speed reducer and the transmission center distance according to the total weight of the high polymer material needing to be uniformly composed, the volume and the weight of the uniform material, the uniform speed of the components and the action time, and determining the torque, the rotational inertia, the number of teeth of the chain wheel, the speed ratio, the transmission center distance and the motor power of the speed reducer. On the basis of ensuring the uniform effect, the reliability, the stability and the safety of the design are considered. The optimal design parameters of the chain wheel are as follows: tooth number Z1=15, Z2=20, pitch P =19.05, transmission ratio I =1.33, sprocket drive center distance 650 mm.
Pitch P15.875 sprocket Z1 and Z2 different tooth number speed ratio effectFruit comparison
| Z1 |
| 10 | 15 | 20 | |
| Z2 | 15 | 20 | 25 |
| Comparison of effects | Poor reliability, stability and safety | Stability of reliability safety in general | Stability of reliability safety in general |
Comparison of the effects of the different tooth ratios of the P19.05 sprocket Z1 and Z2
| Z1 | 10 | 15 | 20 |
| Z2 | 15 | 20 | 25 |
| Comparison of effects | Stability of reliability safety in general | Reliability, stability and safety are excellent | Reliability, stability and safety are too high |
Further, the inner wall of the homogenizer is polished, and the surface roughness Ra of the inner wall is 0.32-0.63 um.
The powder in the auxiliary agent is fine, and the average grain diameter of the powder is about 0.08 mu m. If the inner wall surface of the homogenizer is microscopically uneven, the concave part can adsorb powder or form a layer of powder ash on the inner wall surface, so that the powder cannot intervene in a high polymer material, and the proportioning is unbalanced. The surface roughness Ra of the conventional inner wall is 3.2-6.3um, the surface is rough and cannot meet the requirement of uniform mixing, the surface roughness Ra of the polished inner wall of the homogenizer is 0.32-0.63 mu m, and the polished surface of the homogenizer can prevent the auxiliary powder from being adsorbed on the inner wall to a greater extent in consideration of the agglomeration phenomenon of the auxiliary powder, thereby playing an important role in uniform mixing of high polymer material components.
Furthermore, the rack material of the component homogenizing system is No. 10 channel steel, a welding and bolt connecting structure is adopted, the height and the position are designed by taking the inlet height of the screw extruder as a reference, and the outlet of the component homogenizing device is aligned to the inlet of the extruder. And designing a component uniform system and equipment thereof according to the structural size, position and the like of production process equipment. The design plays roles of positioning, limiting and supporting, and ensures the structural strength and rigidity.
When the equipment works, firstly, the outlet of the component homogenizer is closed, the inlet of the component homogenizer is opened, the powder auxiliary agent and the granular polymer material are sucked into the homogenizer through the fan, the inlet of the homogenizer is closed, the speed reducer is started, the component homogenizer rotates at a constant speed under the driving of the transmission chain, the adjustment range of the set value of the constant speed rotation is 10-20r/min, the homogenizing action time is 30-50min, the speed reducer is closed after the components of the raw materials are homogenized, the inlet of the screw extruder is opened, the outlet of the component homogenizer is opened, and the polymer raw materials with uniform components are conveyed into the screw extruder through the inlet of the screw extruder.
When the equipment is stopped for cleaning and maintenance, the component homogenizer can transversely move through the bearing and the sliding guide rail arranged below, so that the component homogenizer leaves the inlet of the screw extruder, and the equipment is convenient to maintain and clean.
Compared with the prior art, the invention has the following beneficial effects:
1. the invention discloses a component uniform method and equipment for melt-blown non-woven fabric production, which effectively solve the problem that the components of powder auxiliary agents and granular polymer raw materials used in the existing melt-blown line production are seriously non-uniform. Through the design of component homogenizer inclination, rotational speed, rotation time, make macromolecular material and auxiliary agent material misce bene, design through sprocket parameter guarantees the stability and the security of equipment operation, raw materials after the component homogenizer mixes carry screw extruder, spout the silk after the melt-mixing, the corona stays the electricity, obtain the melt-blown non-woven material of high filtration efficiency, because the evenly distributed of auxiliary agent material, the electric charge volume and the electric charge stability of product have been improved, the quality and the function of product have been improved.
2. The bearing and the sliding guide rail thereof are arranged below the component homogenizer, so that the outlet of the component homogenizer and the inlet of the screw extruder can be moved away through the bearing and the sliding guide rail when the equipment is maintained and cleaned, and the maintenance and the cleaning of the component homogenizing system equipment are facilitated.
The invention will be further described with reference to the accompanying drawings.
Drawings
FIG. 1 is a front view of a system for homogenizing a composition according to the present invention.
FIG. 2 is a side view of the compositional homogenization system of the present invention.
FIG. 3 is a top view of the component uniformity system of the present invention.
Detailed Description
The present invention is further explained and illustrated by the following embodiments, which should be understood to make the technical solution of the present invention clearer and easier to understand, and not to limit the scope of the claims.
As shown in fig. 1, fig. 2 and fig. 3, the method for homogenizing the components of the high polymer material produced by the melt-blown non-woven fabric and the equipment thereof comprise: a component homogenizer 1, a homogenizer inlet 2, a rolling bearing 3, a homogenizer outlet 4, a screw extruder inlet 5, a screw extruder 6, a homogenizer drive sprocket 7, a drive chain 8, a speed reducer 9, a main drive sprocket 10, a component homogenizing system frame 11 and a homogenizer sliding guide rail 12, a homogenizer inlet 2 is arranged above the component homogenizer 1, a homogenizer outlet 4 is arranged below the component homogenizer 1, bearings 3 are arranged at two ends of the homogenizer, a homogenizer transmission chain wheel 7 is arranged outside the bearing 3, the transmission chain wheel 7 is connected with a main transmission chain wheel 10 through a transmission chain 8, the main transmission chain wheel 10 is connected with a speed reducer 9, a homogenizer sliding guide rail 12 is arranged below the bearing 3, the lower part of the homogenizer outlet 4 is aligned with the inlet 5 of the screw extruder, the inlet 5 of the screw extruder is connected with the screw extruder 6, and the equipment is fixed on the component homogenizing system frame 11.
Example 1
150kg (volume about 0.23 m) of polymer material with uniform components is produced according to a melt-blown line3) The volume of the component homogenizer is 0.35m3. The inclination angle of the homogenizer is 20 degrees, the end sockets at two ends adopt standard parts, the end sockets and the cylinder body are made of stainless steel 316, and the wall thickness is 4 mm. The transmission shafts at the two ends are made of stainless steel 316. The power of a power supply motor is 0.75kw, the allowable output torque of a speed reducer is 152- & ltN.m & gt, the setting range of constant speed rotation speed regulation is 10-20r/min, the transmission mode is single-row chain transmission, the number of teeth of a chain wheel Z1=20, the number of teeth of a chain wheel Z2=25, the pitch P =15.875 and the transmission ratio I =1.25, and the transmission center distance is 700 mm. The material of the rack of the component homogenizing system is No. 10 channel steel, a welding and bolt connecting structure is adopted, the height and the position of the design are based on the height of an inlet of a screw extruder, and an outlet of the component homogenizing device is aligned to the inlet of the screw extruder.
The operation method comprises the following steps: firstly, the outlet of the component homogenizer is closed, the inlet of the component homogenizer is opened, the powder auxiliary agent (275 g of tourmaline and 50g of barium titanate) and the high molecular granular raw material (150 kg of polypropylene master batch) are sucked into the component homogenizer by a fan, then the inlet of the component homogenizer is closed, the speed reducer is started, the component homogenizer rotates under the drive of a transmission chain, the set value is rotated at a constant speed for 20r/min, and the uniform action time is 30 min.
After the components are uniform, the speed reducer is closed, the inlet of the screw extruder is opened, the outlet of the component homogenizer is opened, and the polymer raw materials with uniform components are conveyed into the screw extruder through the inlet of the screw extruder. The heating temperature of the screw extruder is 180 ℃, 210 ℃, 230 ℃, 260 ℃ and 260 ℃ in the first zone to the fifth zone respectively, the obtained molten mixture is conveyed to a metering pump and then quantitatively conveyed to a spinning die head, the temperature of the spinning die head is 250 ℃ and 260 ℃, the molten mixture is extruded by the spinning die head and then is drafted by hot air to obtain a melt-blown non-woven material, and the melt-blown non-woven material is subjected to corona standing treatment (the corona voltage is 2.5 ten thousand volts) to obtain a product 1.
Example 2
65kg (about 0.1 m in volume) of polymer material with uniform composition per time was produced in accordance with the melt-blowing line3) The volume of the component homogenizer is 0.15m3. The angle of inclination of the homogenizer is 18 degrees, the end sockets at two ends adopt standard parts, the end sockets and the cylinder body are made of stainless steel 316, and the wall thickness is 4 mm. The transmission shafts at the two ends are made of stainless steel 316. The power of a power supply motor is 0.75kw, the allowable output torque of a speed reducer is 152- & ltN.m & gt, the setting range of constant speed rotation speed regulation is 10-20r/min, the transmission mode is single-row chain transmission, the number of teeth of a chain wheel Z1=15, Z2=20, the pitch P =19.05 and the transmission ratio I =1.33 are designed, and the transmission center distance is 650 mm. The material of the rack of the component homogenizing system is No. 10 channel steel, a welding and bolt connecting structure is adopted, the height and the position of the design are based on the height of an inlet of a screw extruder, and an outlet of the component homogenizing device is aligned to the inlet of the screw extruder.
The operation method comprises the following steps: firstly, the outlet of the component homogenizer is closed, the inlet of the component homogenizer is opened, the powder auxiliary agent (450 g of silicon dioxide and 30g of magnesium fatty acid) and the high molecular granular raw material (65 kg of polylactic acid master batch) are pumped into the component homogenizer by a fan, then the inlet of the component homogenizer is closed, a speed reducer is started, the component homogenizer rotates under the drive of a transmission chain, the set value is rotated at a constant speed of 15r/min, and the homogenizing action time is 40 min.
After the components are uniform, the speed reducer is closed, the inlet of the screw extruder is opened, the outlet of the component homogenizer is opened, and the polymer raw materials with uniform components are conveyed into the screw extruder through the inlet of the screw extruder. The heating temperature of the screw extruder is 150 ℃, 160 ℃, 180 ℃ and 200 ℃ in the first zone to the fifth zone respectively, the obtained molten mixture is conveyed to a metering pump and then quantitatively conveyed to a spinning die head, the temperature of the spinning die head is 210 ℃ and 220 ℃, the molten mixture is extruded by the spinning die head and then is subjected to hot air drafting to obtain a melt-blown non-woven material, and the melt-blown non-woven material is subjected to corona standing treatment (the corona voltage is 2.5 ten thousand volts) to obtain a product 2.
Comparative example 1
65kg (about 0.1 m in volume) of polymer material with uniform composition per time was produced in accordance with the melt-blowing line3) The volume of the component homogenizer is 0.15m3The inclination angle of the homogenizer is 30 degrees, and the two endsThe seal head adopts a standard part, the seal head and the cylinder body are made of stainless steel 316, and the wall thickness is 4 mm. The transmission shafts at the two ends are made of stainless steel 316. The power of a power supply motor is 0.75kw, the allowable output torque of a speed reducer is 152- & ltN.m & gt, the setting range of constant speed rotation speed regulation is 5-10r/min, the transmission mode is single-row chain transmission, the number of teeth of a chain wheel Z1=20, the number of teeth of a chain wheel Z2=25, the pitch P =19.05, the transmission ratio I =1.25 and the transmission center distance is 650 mm. The material of the rack of the component homogenizing system is No. 10 channel steel, a welding and bolt connecting structure is adopted, the height and the position of the design are based on the height of an inlet of a screw extruder, and an outlet of the component homogenizing device is aligned to the inlet of the screw extruder.
The operation method comprises the following steps: firstly, the outlet of the component homogenizer is closed, the inlet of the component homogenizer is opened, the powder auxiliary agent (119 g of tourmaline and 21g of barium titanate) and the high polymer granular raw material (65 kg of polypropylene master batch) are sucked into the component homogenizer by a fan, then the inlet of the component homogenizer is closed, the speed reducer is started, the component homogenizer rotates under the drive of a transmission chain, the set value is rotated at a constant speed of 5r/min, and the uniform action time is 20 min. Because the equalizer inclination is great, the center is skew, and the focus is unstable, even the slew velocity adjusts to minimumly, still because centrifugal force is big when rotating, causes vibrations great, and sprocket design parameter selection stability security is higher than the condition of conventional standard, still can't solve the vibrations problem that the rotation process brought, and simultaneously, the raw materials mixes insufficiently inhomogeneous, and the factor of safety of equipment is low.
After the components are uniform, the speed reducer is closed, the inlet of the screw extruder is opened, the outlet of the component homogenizer is opened, and the polymer raw materials with uniform components are conveyed into the screw extruder through the inlet of the screw extruder. The heating temperature of the screw extruder is 180 ℃, 210 ℃, 230 ℃, 260 ℃ and 260 ℃ in the first zone to the fifth zone respectively, the obtained molten mixture is conveyed to a metering pump and then quantitatively conveyed to a spinning die head, the temperature of the spinning die head is 250 ℃ and 260 ℃, the molten mixture is extruded by the spinning die head and then is drafted by hot air to obtain a melt-blown non-woven material, and the melt-blown non-woven material is subjected to corona standing treatment (the corona voltage is 2.5 ten thousand volts) to obtain a product 3.
Comparative example 2
Producing the high polymer material with uniform components every time according to a melt-blown line65kg (volume about 0.1 m)3) The volume of the component homogenizer is 0.15m3The inclination angle of the homogenizer is 10 degrees, the end sockets at two ends adopt standard parts, the end sockets and the cylinder body are made of stainless steel 316, and the wall thickness is 4 mm. The transmission shafts at the two ends are made of stainless steel 316. The power of a power supply motor is 0.75kw, the allowable output torque of a speed reducer is 152- & ltN.m & gt, the setting range of constant speed rotation speed regulation is 20-50r/min, the transmission mode is single-row chain transmission, the number of teeth of a chain wheel Z1=10, the number of teeth of a chain wheel Z2=15, the pitch P =15.875 and the transmission ratio I =1.5, and the transmission center distance is 650 mm. The material of the rack of the component homogenizing system is No. 10 channel steel, a welding and bolt connecting structure is adopted, the height and the position of the design are based on the height of an inlet of a screw extruder, and an outlet of the component homogenizing device is aligned to the inlet of the screw extruder.
The operation method comprises the following steps: firstly, the outlet of the component homogenizer is closed, the inlet of the component homogenizer is opened, the powder auxiliary agent (119 g of tourmaline and 21g of barium titanate) and the high polymer granular raw material (65 kg of polypropylene master batch) are sucked into the component homogenizer by a fan, then the inlet of the component homogenizer is closed, the speed reducer is started, the component homogenizer rotates under the drive of a transmission chain, the set value is rotated at a constant speed of 50r/min, and the uniform action time is 40 min. The homogenizer inclination is less, and the main gathering of powder auxiliary agent is near the homogenizer inner wall, adjusts very high numerical value with slew velocity, and the upset effect of the material body is still not obvious during the rotation, and powder auxiliary agent and the granular raw materials of polymer mix inadequately, and in addition, sprocket design parameter is not good, and under the high-speed rotation condition, easily cause slew velocity's unstability, equipment factor of safety low.
After the components are uniform, the speed reducer is closed, the inlet of the screw extruder is opened, the outlet of the component homogenizer is opened, and the polymer raw materials with uniform components are conveyed into the screw extruder through the inlet of the screw extruder. The heating temperature of the screw extruder is 180 ℃, 210 ℃, 230 ℃, 260 ℃ and 260 ℃ in the first zone to the fifth zone respectively, the obtained molten mixture is conveyed to a metering pump and then quantitatively conveyed to a spinning die head, the temperature of the spinning die head is 250 ℃ and 260 ℃, the molten mixture is extruded by the spinning die head and then is drafted by hot air to obtain a melt-blown non-woven material, and the melt-blown non-woven material is subjected to corona standing treatment (the corona voltage is 2.5 ten thousand volts) to obtain a product 4.
Verification example 1
The products prepared in examples 1-2 and comparative examples 1-2 were subjected to index tests, and the results are shown in the following table.
CV value: i.e., the coefficient of variation, is the ratio of the standard deviation to the average in grammage, expressed as a percentage.
And (3) testing the filtration performance: according to the standard of a YY0469-2011 medical surgical mask, the test is carried out under the NaCl aerosol flow of 28.3L/min, and the test instrument is a TSI 8130 filtration efficiency detector.
The result of the detection
According to the detection results, the CV value of the product in the comparative example 1, namely the gram weight fluctuation is large, the filtration efficiency is reduced, the fracture strength is reduced, because the inclination angle of the component homogenizer is too high, under the conditions of 5r/min of rotation speed and 20min of uniform action time, because the inclination angle of the homogenizer is large, the center is deviated, the center of gravity is unstable, even if the rotation speed is adjusted to be the lowest, the vibration is large because of large centrifugal force during rotation, the stability of the selection of the design parameters of the chain wheel is higher than the conventional standard, the vibration problem caused by the rotation process can not be solved, meanwhile, the raw material mixing is not sufficient and uniform, the safety coefficient of equipment is low, the melt flowability is influenced in the melt spinning process due to the uneven distribution of the powder auxiliary agent in the high molecular component material, the spun filament is unstable, and the fluctuation of the gram weight is large, the filtration efficiency is reduced and the strength is reduced.
The CV value of the product of comparative example 2, that is, the gram weight fluctuates, the filtration efficiency, the breaking strength is better than that of the product of comparative example 1, but the product use requirement is still not met, because the inclination angle of the component homogenizer is too low, the powder auxiliary agent is mainly gathered near the inner wall of the homogenizer, the rotating speed is adjusted to 50r/min, the overturning effect of the material body is still not obvious during the rotation, the time of the homogenizing effect is prolonged to 40min, the powder auxiliary agent is still not fully mixed with the high-molecular granular raw material, in addition, the design parameters of the chain wheel are not good, the instability of the rotating speed is easy to cause under the high-speed rotation condition, and the equipment safety coefficient is low. Compared with comparative example 1, the higher rotation speed and the prolonged time of the uniform action have certain help to the mixing effect, but the problem of uneven mixing of the raw materials cannot be solved by simply adjusting the rotation speed and the time of the uniform action.
In conclusion, the invention provides the high polymer material component homogenizer for producing the non-woven fabric by the melt-blown method, and the melt-blown raw material component homogenizing system which is convenient and rapid, has high auxiliary agent utilization rate and stable product quality is obtained by designing and optimizing parameters such as the inclination angle of the homogenizer, equipment materials, a power supply, a speed reducer, a transmission mode, a connection structure and the like, so that the problem that the components of powder auxiliary agents and granular high polymer raw materials used in the existing melt-blown line production are seriously uneven is effectively solved, the filtering efficiency and the stability of products are further improved, and the quality of the products is improved.
While the present invention has been described by way of examples, and not by way of limitation, other variations of the disclosed embodiments, as would be readily apparent to one of skill in the art, are intended to be within the scope of the present invention, as defined by the claims.
Claims (10)
1. A method for homogenizing the components of a high molecular material for the production of a melt-blown nonwoven fabric, characterized in that: adding the powder auxiliary agent and the granular polymer material into a homogenizer (1), wherein the inclination angle of the homogenizer (1) is 18-23 degrees, the homogenizer (1) rotates at a constant speed, the rotating speed range is 10r/min-20r/min, and the homogenizing action time is 30-50 min.
2. The method of homogenizing a polymeric material composition for meltblown nonwoven production according to claim 1, wherein:
the inclination angle of the homogenizer (1) is 18-20 degrees.
3. The method of homogenizing a polymeric material composition for meltblown nonwoven production according to claim 1, wherein:
the rotating speed of the homogenizer (1) is 10-15 r/min.
4. The method of homogenizing a polymeric material composition for meltblown nonwoven production according to claim 1, wherein:
the uniform action time is 30-40 min.
5. A equipment that is used for even component of macromolecular material of melt-blown process non-woven production, its characterized in that:
including frame (11), evener (1) rotationally connected with frame (11) and set up in frame (11) and with evener (1) along upper and lower direction with the mode complex extruder (6) that the business turn over material is continued, wherein be equipped with evener entry (2) and evener export (4) on evener (1), be provided with extruder entry (5) that are located evener export (4) below on extruder (6), evener (1) is the evener that can rotate, rotate time at least 30min in rotational speed 10r/min-20r/min within range, just evener (1) becomes 18-23 slope settings along the horizontal direction.
6. The apparatus for melt-blown nonwoven production of uniform polymeric material composition of claim 5, wherein:
the volume ratio of the homogenizer (1) to the used raw materials is 1.5-1.6.
7. The apparatus for melt-blown nonwoven production of uniform polymeric material composition of claim 5, wherein:
the device also comprises a rotary power device and a transmission unit which are arranged in sequence, the transmission unit is connected with the homogenizer (1),
the transmission unit comprises a first transmission chain wheel (10) and a second transmission chain wheel (7) which are matched with each other, and the design parameters of the chain wheels are that the number of chain wheel teeth Z1=10~20, Z2=15~25, the pitch P =19.05 or 15.875, the transmission ratio I =1.5~1.25, and the transmission center distance of the chain wheels is 600~700 mm.
8. The apparatus for melt-blown nonwoven production of uniform polymeric material composition of claim 5, wherein:
the homogenizer (1) is connected with the frame (11) in a sliding way through a sliding guide rail (12) arranged along the horizontal direction.
9. The apparatus for melt-blown nonwoven production of uniform polymeric material composition of claim 5, wherein:
the homogenizer (1) is connected with the frame (11) through a rolling bearing (3),
the rolling bearings (3) are arranged at two ends of the homogenizer (1) body along the direction deviating from the axis.
10. The apparatus for melt-blown nonwoven production of uniform polymeric material composition of claim 5, wherein:
the inner wall of the homogenizer is polished, and the surface roughness Ra of the inner wall is 0.32-0.63 um.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1386571A (en) * | 2001-04-05 | 2002-12-25 | 梅田工业株式会社 | Stirring mixer |
| JP2003041474A (en) * | 2001-07-24 | 2003-02-13 | Japan Vilene Co Ltd | Method and apparatus for producing melt-blown nonwoven fabric formed into electret |
| JP2014198926A (en) * | 2013-03-30 | 2014-10-23 | Ｋｂセーレン株式会社 | Melt-blown polyurethane nonwoven fabric and method for producing the same |
| CN207941466U (en) * | 2017-11-04 | 2018-10-09 | 湖南斯莱克景达实验动物有限公司 | A kind of uniform deployment device of experimental animal feeding feed |
| CN112442747A (en) * | 2020-11-18 | 2021-03-05 | 颍上鑫鸿纺织科技有限公司 | Method for manufacturing regenerated fiber by using waste textile and regenerated fiber |
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2021
- 2021-12-14 CN CN202111529799.XA patent/CN114182362B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1386571A (en) * | 2001-04-05 | 2002-12-25 | 梅田工业株式会社 | Stirring mixer |
| JP2003041474A (en) * | 2001-07-24 | 2003-02-13 | Japan Vilene Co Ltd | Method and apparatus for producing melt-blown nonwoven fabric formed into electret |
| JP2014198926A (en) * | 2013-03-30 | 2014-10-23 | Ｋｂセーレン株式会社 | Melt-blown polyurethane nonwoven fabric and method for producing the same |
| CN207941466U (en) * | 2017-11-04 | 2018-10-09 | 湖南斯莱克景达实验动物有限公司 | A kind of uniform deployment device of experimental animal feeding feed |
| CN112442747A (en) * | 2020-11-18 | 2021-03-05 | 颍上鑫鸿纺织科技有限公司 | Method for manufacturing regenerated fiber by using waste textile and regenerated fiber |
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| CN114182362B (en) | 2023-09-08 |
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