35results about How to "Maintain quality" patented technology

The utility model discloses a flat plate type chassis of an agricultural unmanned trolley, which belongs to the technical field of agricultural vehicle parts, aims at solving the problem that the loss rate of crops is increased due to the fact that the agricultural vehicle generates large vibration in the driving process, and comprises a chassis frame, and two front wheels are rotatably arranged at the bottom of the chassis frame close to the front end. Two rear wheels are rotatably mounted at the positions, close to the rear end, of the bottom of the chassis frame, the cushioning mechanisms, the transverse cushioning springs and the longitudinal cushioning springs are matched, under the action of the pipe sleeves and the damping rods, vibration borne by the box body can be buffered, the situation that the vibration is transmitted into the storage box from the chassis can be effectively reduced, and the storage box is convenient to use. By means of the technical scheme, the vehicle can run more stably, the stability and safety of crops in the transportation process are improved, the crops can be prevented from being excessively squeezed, collided and damaged in the transportation process, and especially for easily-damaged fruits and vegetables, the shape and quality of the fruits and the vegetables can be kept, and the loss rate is reduced.

The utility model relates to the technical field of cosmetic packaging, in particular to a serum protein active water film vacuum fresh-keeping glass bottle packaging device. The device comprises a storage assembly and a pumping assembly, the pumping assembly is connected with the storage assembly and extracts objects stored in the storage assembly outwards, the pumping assembly is externally connected with a smearing assembly, sealing assemblies are installed on the storage assembly and the smearing assembly, and the sealing assemblies control opening and closing installation. The storage assembly is designed to be in vacuum sealing, contact between oxygen in air and a serum protein active water film is remarkably reduced, the oxidation risk is reduced, the shelf life of the product is prolonged, the pumping assembly can accurately control the dosage extracted each time, waste is avoided, meanwhile, it is ensured that the dosage used each time is consistent, and the service life of the product is prolonged. The pumping mechanism reduces the opportunity that fingers of a user make direct contact with the product, pollution risks are reduced, product sanitation is guaranteed, the external smearing assembly is designed to be suitable for direct use, intermediate operation steps are reduced, and the user can smear the product easily.

The utility model discloses a leather cutting machine partition adsorption structure which comprises a rack, a cutting panel is arranged at the top of the rack, a plurality of adsorption holes are formed in the cutting panel, an air pipe is arranged below the cutting panel, the air pipe is externally connected with a vacuum pump, and the air pipe corresponding to the adsorption holes is connected with the bottom face of the cutting panel through a branch air pipe. An air cylinder is arranged corresponding to each branch air pipe, the output end of each air cylinder is connected with a partition plate, and the partition plates can stretch into the ends of the branch air pipes to open or close the branch air pipes. The vacuum adsorption mode is adopted for fixing the dermis, damage to the dermis is small, obvious traces or tensile deformation cannot be left on the surface of the dermis, the original state and quality of the dermis can be well kept, the vacuum adsorption type dermis fixing device can adapt to dermis of various shapes and sizes, and regular rectangles or irregular shapes can be effectively fixed.

The utility model discloses a fresh cut flower peony transportation damping flower stand, which relates to the technical field of fresh cut flower transportation equipment, and comprises a base, upright posts, a top plate, a damping component and a peony fixing device, the stand column is vertically arranged at the top end of the base, and the top plate is arranged at the top end of the stand column. A plurality of supporting plates are arranged between the base and the top plate, and the four corners of each supporting plate are fixed to the stand columns respectively. The damping assembly is arranged at the top end of the supporting plate. According to the Chinese herbaceous peony fixing device, the placing plate is provided with the placing groove, Chinese herbaceous peony can be preliminarily fixed, the elastic fixing pieces can be flexibly adjusted according to the number and size of the Chinese herbaceous peony, the Chinese herbaceous peony is firmly fixed on the placing plate through connection of the hook-and-loop fasteners on the first elastic strip and the second elastic strip, the Chinese herbaceous peony is prevented from shaking and shifting in the transportation process, and flowers are further protected.

The invention relates to the technical field of high polymer material processing, and discloses a supercritical CO2 assisted devolatilization and microcellular foaming integrated method for preparing optical-grade PMMA (polymethyl methacrylate), which comprises the following steps: conveying a PMMA prepolymer containing a residual methyl methacrylate monomer into a high-pressure reaction kettle to be in contact with supercritical CO2 and saturated; then, the saturated melt is subjected to rapid pressure reduction, CO2 dissolved in the melt is separated out to form a micropore structure, and residual monomers are synchronously brought out; and cooling and shaping to obtain the optical-grade PMMA material. By adopting the method disclosed by the invention, integrated preparation of efficient removal of PMMA residual monomers and micropore lightweight forming can be realized at a lower processing temperature, and the obtained material has lower residual monomer content, lower density, higher light transmittance and lower haze.

This application relates to the field of electronic component cleaning technology, specifically disclosing an electronic component cleaning device with batch processing capability. The device includes a drying chamber with an open front end for the adsorption assembly to enter and exit. The top of the drying chamber has several ventilation holes to allow effective evaporation of cleaning agent vapor. An air outlet is located on the left side of the drying chamber, connected to a blower via a pipe. The blower removes dust and excess cleaning agent from the electronic components. Two sliding rails are located on the bottom of the drying chamber, slidably connecting to an electric telescopic frame. An adsorption assembly is fixedly connected above the electric telescopic frame. A vacuum assembly is fixedly connected to the front end of the adsorption assembly for vacuum adsorption of the components, and a low-temperature heating assembly is fixedly connected to the rear end of the adsorption assembly for rapid evaporation of the cleaning agent. Sliding grooves are located on the left and right sides of the adsorption assembly, slidably connecting to cleaning components for cleaning them. This invention has the function of cleaning and timely drying electronic components in batches.

The utility model relates to fishing supplies technical field, propose a kind of bait box, including box, box both ends have opening, further include for being arranged in the end cover of box both ends, end cover is used to open or close opening, box interior has first baffle and second baffle, first baffle and second baffle form installation gap, and several illuminating lamps are installed and arranged in installation gap, and first baffle and second baffle are all light-transmitting material, first baffle and an end cover form first storage cavity, second baffle and another end cover form second storage cavity. Solve the insufficient light in the prior art bait box, angler is difficult to quickly and accurately find the required bait, this not only waste time, also can miss the best fishing opportunity problem.

The application discloses a cloud artemisia fruit forest undergrowth breeding device and relates to the technical field of seed seedling cultivation. The cloud artemisia fruit forest undergrowth breeding device comprises a breeding frame, a closed curtain and a glass window. The breeding frame comprises an integral outer frame. The closed curtain is fixedly connected to the front face and the back face of the integral outer frame. The glass window is fixedly connected to the left side and the right side of the integral outer frame. The breeding frame is fixedly connected with fruit drop collecting mechanisms on the left side and the right side. An electrical box is fixedly connected to the left face of the fruit drop collecting mechanism on the left side. The fruit drop collecting mechanisms are communicated with fermentation trapping mechanisms on the back face. The breeding frame is fixedly connected with isolation and repelling nets on the left side and the right side. The cloud artemisia fruit forest undergrowth breeding device actively repels and traps the pests breeding inside and outside the device by means of the fruit drop collecting mechanisms, the external trapping openings and the isolation and repelling nets, and the generation quality and yield of the cloud artemisia are improved.

The utility model discloses a novel corn quick freezer, including main part, bulk material mechanism, transport mechanism and freezing mechanism, bulk material mechanism includes the distribution board and vibrator, transport mechanism includes first motor and conveyer belt, freezing mechanism includes fan and freezer, under the mutual cooperation of above -mentioned mechanism, the device prevents corn kernel stacking and can avoid mutual extrusion between corn kernels, reduces the damage, keeps the integrity and appearance quality of corn kernel, in addition, the device is evenly distributed and is helpful to cold air more effectively penetrate corn kernel layer, reduces the freezing time.

The invention discloses a DDR5 temperature-voltage collaborative adaptive gate drive regulation and control method and device and a medium, and relates to the technical field of gate drive regulation and control, and the method comprises the steps: obtaining the current working temperature and current working voltage of a memory chip in real time; the current working temperature and the current working voltage serve as joint input key values, a predefined driving strength lookup table is inquired, a corresponding driving strength configuration value is obtained through mapping, and the driving strength lookup table records the mapping relation between different temperature-voltage combinations and the optimal driving strength configuration value; and generating a driving intensity control signal according to the driving intensity configuration value, and dynamically adjusting the driving intensity of a data output driver in the memory chip based on the driving intensity control signal. According to the method, the driving intensity of the data output driver is dynamically adjusted based on the predefined mapping relation by cooperatively sensing the working temperature and the power supply voltage of the memory chip in real time, so that the defect that a static configuration method cannot adapt to the dynamic change of the environment is effectively overcome.

The utility model discloses a bamboo leaf blanching device, and relates to the technical field of bamboo leaf blanching. The bamboo leaf blanching device comprises supports, a moving assembly and a placing assembly, the two supports are symmetrically distributed, a high-temperature box and a cooling box are arranged between the two supports, the placing assembly is arranged on the supports and comprises a placing frame, a pressing plate and a connecting frame, the pressing plate is installed on the placing frame in a clamped mode, and the connecting frame is fixedly installed on the front side of the placing frame. According to the bamboo leaf blanching device, the placing assembly is arranged, the pressing plate evenly presses bamboo leaves, it can be guaranteed that the bamboo leaves are subjected to even pressure in the blanching process, the even pressure is beneficial for the bamboo leaves to be heated more evenly in the blanching process, and the problem that partial bamboo leaves are excessively blanched locally or are not fully treated due to uneven pressing is solved; and meanwhile, the bamboo leaves are fixed in the placing frame and pressed, so that the phenomena of rolling, overlapping or irregular placement of the bamboo leaves in the blanching process can be reduced, and the regularity of the bamboo leaves is ensured.

This invention provides an automatic SAR target detection method and apparatus based on adaptive feature focusing, belonging to the field of SAR image detection. The method includes: constructing a lightweight EOD-Net; after the backbone network extracts multi-scale features, the latent target perception branch PTBranch outputs a mask to coarsely locate the target region; and using a no-overlap feature map cropping NOFC to iteratively remove overlapping blocks, retaining only non-overlapping target feature blocks for the detection head to regress. During the training phase, a Gaussian-binary hybrid mask supervises PTBranch, and the focus loss and DICE loss are jointly optimized. This invention outperforms comparable methods such as YOLOv11 and Faster RCNN, achieving high-precision and efficient SAR image detection.

The utility model belongs to the technical field of vehicle part manufacturing equipment, and discloses a rolling line continuous rolling die for automobile parts, which comprises a platform, the platform is connected with a supporting column, the platform is rotatably connected with two groups of rotating shafts I, the rotating shafts I are connected with a die body, the platform is connected with a supporting plate, and the supporting plate is connected with a plurality of groups of telescopic rods. The telescopic ends of the telescopic rods are jointly connected with a supporting frame, the telescopic rods are sleeved with springs, the two ends of the springs are connected with the supporting plate and the supporting frame respectively, the supporting frame is rotationally connected with a second rotating shaft, the supporting frame is connected with a first motor, the output end of the first motor is connected with the second rotating shaft, the second rotating shaft is connected with a transmission cylinder, and the first rotating shaft is connected with a driving device. According to the utility model, power can be provided for materials while the positions of the materials are limited, so that an operator does not need to watch a station for a long time for manual feeding, material deviation is monitored at any time, and repeated physical labor is liberated.

The utility model relates to gas compression recovery technical field discloses a kind of self-adapting energy-saving industrial gas compression recovery systems, including filter, the inner wall of filter rotatably connected with impeller one, the inner wall of impeller one is fixedly connected with fixed link, the outer wall of fixed link rotatably connected with filter sheet, the outer wall of filter sheet is fixedly connected in the inner wall of filter, the outer wall of fixed link is fixedly connected with fixed gear, the outer wall of filter screen is fixedly connected in the outer wall of filter sheet, the outer wall of telescopic scraper is slidably connected in the outer wall of filter screen, the outer wall of filter is detachably installed with collection box, the outer wall of filter is provided with compression component. In the utility model, by gas drive impeller one rotation, make it drive fixed link rotate in the inner wall of filter sheet, set telescopic scraper can reciprocatingly clean filter screen, reach the effect of maintaining filtering efficiency, keeping the purity and quality of final recovery gas.

The utility model discloses a discharging device for nodular cast iron pipe production, and relates to the technical field of nodular cast iron pipes, the discharging device comprises a shell, a cutting mechanism is arranged in the shell, an adjusting mechanism is arranged in the shell, and the cutting mechanism comprises a fixing body. A first belt pulley drives a second belt pulley to rotate through a belt, then the second belt pulley drives a threaded rod to rotate, then rotation of the threaded rod enables a moving plate to move towards the iron pipe, then the moving plate drives a push plate to move together, and the first belt pulley is driven to rotate through a bidirectional threaded rod; and then a first belt pulley drives a push plate to move in the direction of the iron pipe through transmission, then the push plate pushes the iron pipe through springback of a spring, and the effects that the iron pipe can be automatically discharged after being cut, the accuracy of the discharging amount, the discharging speed and the discharging direction can be ensured, and the consistency and the quality of products can be easily kept are achieved.

The utility model relates to the technical field of tea oil storage, especially to a tea oil light-proof storage tank with ultraviolet rays prevention. The utility model provides a tea oil light-proof storage tank with ultraviolet rays prevention: including tank body, tank cover, support leg, oil injection valve, oil taking valve, light-proof layer, inner bag etc. The tank cover is fixedly installed on the upper end of the tank body through bolts, a certain number of support legs are fixedly connected to the bottom of the tank body, the oil injection valve is fixedly arranged on the right side of the upper end of the tank cover, the light-proof layer is fixedly arranged on the circumferential side of the tank body, the inner bag is fixedly arranged in the light-proof layer, and the oil taking valve is fixedly arranged on the right part of the lower side of the tank body. The light-proof layer made of aluminum foil or black polyethylene material and sprayed with ultraviolet rays prevention coating is arranged on the circumferential side of the tank body, which effectively blocks the penetration of external light, especially ultraviolet rays, prevents the photo-oxidation reaction of tea oil, and maintains the nutritional ingredients and quality of tea oil.

The invention discloses a donkey-hide gelatin cubilose with high water absorption rate and a preparation method thereof, and the preparation method of the donkey-hide gelatin cubilose comprises the following steps: carrying out steaming pretreatment on cubilose, and then carrying out freeze thawing treatment; soaking the treated cubilose in water until the cubilose is fully puffed; adding water into donkey-hide gelatin, heating and dissolving to form a donkey-hide gelatin solution And then adding the soaked cubilose into the donkey-hide gelatin solution for stewing, and immediately exhausting steam and cooling after heating is completed to obtain the donkey-hide gelatin cubilose product. By introducing a pretreatment process combining steaming and freeze thawing and matching with a reasonable stewing and cooling mode, the water absorption rate of the cubilose is effectively improved under the condition that the donkey-hide gelatin is added, and the problem of insufficient water absorption of a compounded product is improved; the obtained donkey-hide gelatin cubilose has the advantages of stable structure, full puffing, uniform texture, high nutrition compound degree and the like, and is suitable for industrial production, popularization and application of food.

This invention discloses an intelligent control device for adjusting battery withstand voltage, comprising a battery, battery cells, a battery management system, and at least one booster cell. The booster cell is mounted on the system power supply rail, and at least one crystal control switch controls the series connection state between the booster cell and the battery cell in a one-to-one manner. When the charging voltage rises and causes the battery cell's withstand voltage to be insufficient, the battery management system controls the disconnection of the main crystal control switch and the connection of one of the crystal control switches to connect at least one booster cell in series with the original battery cell, thereby dynamically increasing the total withstand voltage value. This prevents power outages or surges due to overvoltage protection and can dynamically adapt to voltage changes in generators or charging equipment, ensuring battery life and power supply stability.

This utility model relates to the field of fire-fighting equipment technology, specifically a vehicle-mounted integrated hose reeling and cleaning machine. It includes a vehicle body, a fixed bracket, a hose reeling / unwinding device, and a guiding and cleaning device. The fixed bracket is mounted on the vehicle body, and the hose reeling / unwinding device and the guiding and cleaning device are respectively located on both sides of the fixed bracket. The hose reeling / unwinding device is used to reel in and unwind empty hoses. During reeling, the guiding and cleaning device guides the empty hoses towards the hose reeling / unwinding device. The guiding and cleaning device includes an adjustment component, a guiding component, and a cleaning component. The adjustment component is mounted on the fixed bracket. This utility model achieves integrated hose reeling / unwinding and cleaning operations, significantly improving work efficiency, reducing labor costs, and providing strong technical support for fire-fighting operations.

The application relates to the technical field of roll production line control, and discloses a high-speed roll changing control method and system based on tension prediction, wherein the method comprises the following steps: initializing control parameters; collecting the roll diameter of a main roll shaft and material tension in real time, and predicting a roll changing trigger time based on a roll diameter change rate; generating a prepared roll shaft acceleration curve based on an electronic cam algorithm, and calculating a tension feedforward compensation amount according to the moment of inertia and angular acceleration; outputting a speed error feedback item, a tension error feedback item and a feedforward compensation item to a servo driver after superposition; triggering a cutter and a compression roller in sequence to complete roll changing after determining a speed synchronization condition; and completing smooth transfer of tension control rights through a coordination gradual change strategy.

The embodiment of the invention provides a film removing method for coated glass, and relates to the technical field of film removing, the film removing method comprises the following steps: providing coated glass, the coated glass comprises a first surface and a second surface which are oppositely arranged, the first surface is provided with a coating layer, and the second surface is provided with an ink layer; printing ink removal treatment and first heat treatment are conducted on the coated glass, and the first heat treatment is used for changing the stress state of the coated glass so that the coated glass can be bent in the direction away from the second face; carrying out polishing treatment on the first surface of the coated glass subjected to the first heat treatment so as to remove the coating layer; the coated glass with the coating layer removed is subjected to second heat treatment, the coated glass with the coating layer removed is obtained, and the second heat treatment is used for adjusting the stress state of the coated glass with the coating layer removed, so that the surface of the coated glass with the coating layer removed recovers to be flat.

The invention relates to an application of allicin in food preservation, belongs to the technical field of food preservation, and discloses a pH response type microcapsule for applying allicin to food preservation, and the microcapsule has a core-shell structure; wherein the inner core comprises allicin; the shell layer is a pH-sensitive polymer shell layer and is configured to be stable when the pH value is lower than 6.0, and the shell layer starts to dissolve and release allicin of the inner core when the pH value is higher than 6.0; a key and measurable chemical signal-surface pH value increase in the decay process of perishable food is used as a triggering condition, limited preservatives are intensively used for inhibiting the most serious decay period, the preservation efficiency is maximized, the situation that excessive allicin covers and interferes with the food flavor in the initial preservation period is avoided, the allicin is only released when necessary, and the food flavor is not influenced. And the sensory acceptance is better.

This utility model discloses a drying device for paper product processing, including a drying chamber. The collecting mechanism includes a water collection hood fixed to the top of the drying chamber. The outer wall of the water collection hood is inclined around its perimeter. Condensation pipes are installed around the inner wall of the water collection hood. Inverted V-shaped water guide grooves are fixed to the top two sides of the inner wall of the water collection hood. Positive V-shaped water guide grooves are fixed to the top two ends of the inner wall of the drying chamber, with the inverted V-shaped water guide grooves positioned above the positive V-shaped water guide grooves. Water collection boxes are fixed to the top of both ends of the drying chamber. The bottoms of the two positive V-shaped water guide grooves are connected to communicating conveying pipes. The other ends of the two conveying pipes are respectively connected to the top of one end of each of the two water collection boxes. This utility model achieves the collection of water vapor, preventing it from dripping onto the surface of the paper products and causing rewetting, thus helping to maintain the dryness and quality of the paper products and improving the drying quality of the paper products.

A polymerizable composition for optical material including two or more different monomers for optical material and a polymerization catalyst, in which the content of the polymerization catalyst relative to the total amount of the monomers for optical material is from 0.1150 to 0.2000 parts by mass, the viscosity of the polymerizable composition for optical material is from 10 mPa·s to 1000 mPa·s as measured with a B-type viscometer at 20°C and 60 rpm, and at least one of the two or more different monomers for optical material is an episulfide compound.

The present application relates to the technical field of fresh-keeping packaging, and specifically provides a packaging method and system for fresh-keeping storage, which comprises the following steps: obtaining the number of bacteria on the surface of the to-be-packaged article, determining whether to perform ultraviolet sterilization; when performing micro-freezing treatment, placing the to-be-packaged article into ice water, adding salt into the ice water according to the amount of ice water; the refrigerator performs refrigeration at an initial power, obtaining the real-time temperature of the to-be-packaged article, and determining whether to adjust the initial power; obtaining the bacterial content in the ice water, and determining whether to start the water changing device; segmenting the to-be-packaged article; collecting the volume after segmentation, completing the vacuumizing operation at the air extraction rate S0 and performing sealing; collecting image data, obtaining the bubble volume V0 in the to-be-packaged article after sealing, and determining whether the packaging is qualified. The method combines ultraviolet sterilization, micro-freezing treatment and vacuum sealing to realize the safety, freshness and quality of the to-be-packaged article during long-term storage, and improves the utilization efficiency of resources.

This utility model discloses an easy-to-clean antibacterial groove structure for a tofu box, belonging to the technical field of tofu box technology. Key technical features include an easy-to-clean box assembly with a cooling component at the bottom. The design of the horizontal and vertical grooves reduces hard-to-reach areas, making it easier to wipe all parts of the tofu box during cleaning, preventing dirt residue and facilitating cleaning of the inside of the box. It also effectively inhibits bacterial growth, maintaining hygiene inside the tofu box and helping to extend the shelf life of the tofu. The cooling component allows ice to be placed inside the mounting frame, lowering the temperature of the tofu box through heat transfer, providing a low-temperature storage environment for the tofu, further extending its shelf life and maintaining its quality and taste. It also facilitates placing or removing a pull-out box containing ice from the mounting frame for easy ice replacement, making operation simple and convenient.

The utility model belongs to the technical field of cigarette packaging boxes, and particularly relates to a paper strip box and a cigarette packaging system. The cover and the box body are each of a rectangular box body structure at least provided with a reinforcing structure in a corner area, and each box body component is provided with a closed bottom and a circumferential side wall. An annular boss extending downwards is arranged in the closed end of the cover in the circumferential direction, and an annular stepped retreating table matched with the annular boss is arranged on the outer wall of the open end of the box body in the circumferential direction. When covering is conducted, radial interference fit is formed between the inner side wall of the annular boss and the outer side wall of the annular stepped retreat table, full-circumferential axial plane sealing contact is formed between the bottom end face of the annular boss and the bearing face of the annular stepped retreat table, and the radial interference fit and the axial plane sealing contact jointly form a double-sealing structure. The cover and the box body are integrally formed by paper pulp molding, so that structural gaps and manual splicing errors are avoided, and the production efficiency and the forming precision are greatly improved.

The utility model discloses a kind of tea blending equipment, including drum blender, lifting conveying device and two or more than vibration feeder, along the conveying direction of the lifting conveying device, the vibration feeder is sequentially arranged in the conveying path side of the lifting conveying device, the end of the lifting conveying device is arranged in the feed inlet of the drum blender;The tea to be blended is sequentially placed to the vibration feeder and falls into the lifting conveying device by vibration mode sequentially covers and is conveyed and falls into the feed inlet of the drum blender, the drum blender is output finished tea leaf from discharge port after tumbling mixing. The equipment can realize more uniform mixing, improve the quality of tea blending.

This invention discloses a strain of *Lactobacillus delbrueckii* with muscle-protecting function during fat loss, its products, and applications, belonging to the field of microbial technology. The invention discloses *Lactobacillus delbrueckii* subspecies Turb8, with accession number CGMCC No. 35627. This strain or its preparations can effectively prevent or improve muscle loss and functional decline during the use of fat-loss drugs such as GLP-1 receptor agonists (e.g., liraglutide, smegglutide), achieving the effect of "fat loss without muscle loss." While maintaining the original weight-loss effect of fat-loss drugs, the strain of this invention can significantly increase the user's lean body mass percentage, increase lower limb muscle mass, increase muscle fiber cross-sectional area, and improve muscle function indicators such as limb strength and suspension endurance. This invention also relates to bacterial agents containing this strain, various preparations, and their application in the preparation of products for improving (especially drug-induced) muscle loss.

This invention belongs to the field of towel manufacturing technology, specifically a finishing process for long-staple cotton towels, including yarn treatment, fabric weaving, and dyeing. In this invention, after the long-staple cotton is produced into yarn, the yarn undergoes a preliminary dyeing process. The purpose of this is to create a clear color difference between the knotted areas and the normal areas. During subsequent weaving, when visually inspecting the fabric, the significant color difference allows for more accurate identification of the knotted areas. This enables precise napping treatment of the knotted areas in subsequent processing, improving the quality of the napping process. This reduces the impact of the knotted area on the quality of the finished towel, and can even prevent the appearance of white spots, ensuring the quality and comfort of the towel.