Twin screw compounding lines are the core production equipment for plastic modification, filler blending, fiber reinforcement, plastic alloy blending, and waste plastic recycling industries. Different from main throat feeding, side feeding systems are specially designed for adding heat-sensitive materials, high-filler powders, glass fibers, and low-bulk-density additives in the middle and later stages of extrusion. This segmented feeding method avoids material decomposition, fiber breakage, and uneven mixing caused by high-temperature and long-time shear in the early barrel section, ensuring high-quality compounding effects for modified plastics.
Side feeder bridging is one of the most common and disruptive operational faults in twin screw compounding production. Bridging refers to the phenomenon where powdery, granular, or fibrous materials form a stable arch structure inside the side feeder hopper and feeding barrel. The material accumulates and locks in place without free falling into the twin screw barrel, resulting in intermittent feeding, material cutoff, and unstable formula ratio. Minor bridging causes fluctuating product density, uneven filler dispersion, and inconsistent batch quality. Severe continuous bridging leads to frequent production shutdowns, increased material waste, and substantial losses in production efficiency and product yield.
Most processing enterprises frequently encounter recurring side feeder bridging problems in high-filler compounding, talc filling, calcium carbonate modification, glass fiber reinforcement, and recycled plastic blending production. Without systematic cause analysis and targeted solutions, enterprises can only rely on manual vibration and poking for temporary relief, which fails to fundamentally eliminate hidden dangers and brings long-term unstable factors to production. WANPLAS, as a professional manufacturer of high-stability twin screw compounding extrusion lines and supporting side feeding systems, has accumulated rich practical experience in solving feeding bridging failures. This article comprehensively sorts out the core causes of side feeder bridging, analyzes production losses brought by different bridging degrees, summarizes standardized elimination solutions and long-term prevention strategies, and recommends WANPLAS optimized compounding line configurations to help enterprises completely solve feeding bridging problems and stabilize continuous production.
1. Basic Overview of Twin Screw Side Feeding System and Bridging Mechanism
1.1 Core Functions of Side Feeder in Compounding Production
The side feeding system is an indispensable auxiliary feeding device for high-end twin screw compounding lines, independently installed on the middle and rear barrel sections of the twin screw extruder. Its core function is to realize staged and segmented feeding of different raw materials according to the thermal processing characteristics of plastic formulas. In traditional single main feeding mode, all raw materials enter the barrel at the front end and undergo long-term high-temperature melting and strong shear mixing.
For heat-sensitive additives, low-melting-point powders, glass fibers, and high-content inorganic fillers, early feeding will cause thermal decomposition, fiber pulverization, and excessive shear degradation, seriously affecting the mechanical properties and appearance quality of modified plastics. The side feeder accurately sends functional fillers and reinforcing materials into the low-temperature and low-shear stage of the extrusion process, ensuring that each component material completes melting, blending, and compounding in the most suitable processing environment, greatly improving formula uniformity and product qualification rate.
Side feeders are widely used in PP/PE talc filling, ABS flame retardant modification, PA glass fiber reinforcement, biodegradable plastic compounding, and recycled plastic homogenization production. The stable operation of the side feeding system directly determines the formula accuracy, mixing uniformity, and continuous production capacity of the entire compounding line.
1.2 Structural Composition of Standard Side Feeder Equipment
A complete industrial twin screw side feeding system consists of a storage hopper, material level monitoring sensor, quantitative screw feeding mechanism, variable frequency drive motor, feeding barrel, exhaust device, and flange connection base. The storage hopper is responsible for material buffer storage, equipped with upper and lower material level sensors to prevent material shortage and overflow. The core quantitative screw adopts customized pitch and tooth shape according to different material characteristics to realize stable and fixed-proportion conveying.
The variable frequency motor accurately adjusts the feeding speed to match the main extruder operating speed, ensuring consistent formula proportion. The feeding barrel is connected to the twin screw barrel through a sealed flange, and the built-in exhaust structure eliminates internal negative pressure and air accumulation, avoiding material floating and accumulation. All structural parts jointly form a closed and stable quantitative feeding system, and any structural abnormality or parameter mismatch will induce bridging failures.
1.3 Formation Mechanism of Side Feeder Bridging
Material bridging is essentially a mechanical arching phenomenon of bulk materials under the action of gravity, friction, and internal pressure. When powdery, flaky, or fibrous materials are stored in the side feeder hopper, friction exists between material particles and between materials and the hopper wall. When the material stacking angle, friction coefficient, and material moisture reach critical conditions, the local material layer forms a self-supporting arch structure.
This arch structure can bear the weight of the upper material, resulting in the separation of the upper and lower materials. The lower feeding screw idles without material supply, while the upper material cannot fall down, forming empty feeding and material cutoff. In twin screw compounding production, continuous screw operation causes negative pressure inside the feeding barrel, which further tightens the material arch and makes bridging more stable and difficult to eliminate.
Different from occasional blocking, bridging is a periodic and repetitive failure. Once the material arch is formed, it will continue to exist until external vibration or manual intervention destroys the balance, which seriously interferes with the automatic continuous production rhythm of the compounding line.
2. Classification and Specific Manifestations of Side Feeder Bridging Failures
2.1 Light Intermittent Bridging
Light bridging is the most common low-level failure in daily compounding production, manifested as intermittent material cutoff and unstable feeding volume. The equipment can feed normally for a period of time, then suddenly experience short-term material interruption, and resume feeding automatically after a few seconds. This type of bridging will not cause equipment shutdown, but leads to fluctuating material proportion, unstable melt pressure, and inconsistent product tensile strength and impact resistance.
In batch production, light intermittent bridging will cause uneven dispersion of fillers and additives, resulting in color difference and performance difference between front and rear batches of products, increasing the difficulty of quality inspection and product classification. This failure is easy to be ignored by operators, but it is the main cause of low pass rate of modified plastic finished products.
2.2 Medium Continuous Bridging
Medium bridging refers to continuous and stable material arching in the side feeder, with long-term material cutoff and no automatic recovery. The feeding screw idles continuously, and the feeding volume drops to zero. The main extruder is still operating normally, resulting in serious imbalance of the plastic formula, insufficient filler content, and serious fluctuation of melt viscosity.
At this stage, the extruded product has obvious quality defects such as uneven texture, poor surface flatness, and unqualified mechanical properties, and can only be treated as waste. Operators need frequent manual poking and vibration to break the material arch, which seriously affects production continuity, increases labor intensity, and causes a large amount of material waste and time loss.
2.3 Severe Hard Bridging and Caking Blockage
Severe bridging is accompanied by material moisture absorption, agglomeration, and wall adhesion, forming hard material arches and fixed blockages. Powdery materials absorb moisture in the humid workshop environment, and fine particles adhere to each other to form large agglomerates. Long-term extrusion heat conduction makes the local material thermally bonded and hardened, forming a fixed hard arch structure that cannot be broken by ordinary vibration.
Severe hard bridging will completely block the side feeder channel, resulting in long-term production shutdown. It requires professional disassembly, cleaning, and manual chiseling to remove hardened materials. Long-term blockage will cause overheating of the feeding screw motor, equipment overload alarm, and even burn out electrical components, bringing greater maintenance costs and production losses.
3. In-Depth Analysis of Root Causes for Side Feeder Bridging
3.1 Material Physical Characteristic Causes (Core Inducement)
Material characteristics are the primary factor leading to side feeder bridging. Low-bulk-density fine powders such as talc powder, calcium carbonate powder, flame retardant powder, and carbon black powder have small particle size, light weight, and large specific surface area. The friction and adsorption force between particles is strong, and materials are easy to stack and arch under gravity, with extremely poor fluidity.
Fibrous materials such as glass fiber and carbon fiber have slender strip structures. Materials are easy to interlock and wind with each other during stacking, forming a stable three-dimensional grid structure, which directly leads to material arching and inability to fall. Flaky fillers such as mica powder also have poor fluidity and are prone to layered stacking and bridging.
Material moisture absorption is another key inducement. Fine powder materials are highly hygroscopic. When the workshop air humidity is high, materials absorb moisture and form tiny liquid bridges between particles, increasing adhesion and cohesion. The materials change from loose powder to agglomerated blocks, which greatly improves the stability of the material arch and makes bridging more frequent and difficult to solve.
3.2 Structural Design and Equipment Matching Causes
Unreasonable structural design of the side feeder itself is the fundamental reason for recurring bridging. The hopper of ordinary side feeders adopts a single straight cone structure with a too-small cone angle, resulting in material extrusion and stacking at the outlet. The inner wall of the hopper is rough, and materials are easy to adhere to the wall to form fixed material layers, narrowing the feeding channel and inducing arching.
The mismatch between feeding screw model and material characteristics is also a common problem. The standard screw pitch cannot adapt to low-fluidity powder and fibrous materials. The screw conveying speed does not match the material falling speed, resulting in material hollowing and arching above the screw. In addition, the lack of effective exhaust structure inside the feeding barrel leads to air accumulation and negative pressure, which tightly adsorbs materials on the wall and aggravates bridging.
Aging and deformation of equipment accessories will also induce failures. Long-term friction causes scratches and roughness on the inner wall of the hopper, and the aging of the vibration device leads to insufficient vibration force, unable to break the material arch in time.
3.3 Production Environment and Climate Causes
Workshop temperature and humidity changes have a significant impact on material fluidity and bridging frequency. In high-temperature and high-humidity seasons, the moisture content of powdery materials increases significantly, particle adhesion increases, and bridging probability rises sharply. In dry and low-temperature environments, static electricity is easily generated between fine powder particles, causing electrostatic adsorption and material agglomeration, also leading to bridging failures.
Unclean workshop environment and floating dust will mix into raw materials, changing the particle gradation of materials. Mixed impurities will destroy the fluidity of uniform materials and form stable arch structures. Poor material storage conditions lead to long-term stacking and compaction of raw materials, increasing material bulk density and cohesion, making it difficult for materials to fall freely during feeding.
3.4 Operational Parameter and Manual Operation Causes
Unreasonable setting of production parameters is an important human factor leading to bridging. Excessively fast side feeding speed makes the material falling speed unable to keep up with the screw conveying speed, resulting in material hollowing and arching. Too fast main engine speed increases the negative pressure inside the extrusion barrel, pulling the side feeder materials to form unstable gaps and induce bridging.
Irregular material feeding operation is also a common cause. One-time large-scale material pouring causes excessive instantaneous stacking pressure in the hopper, compacting the bottom materials and forming a hard material layer. Long-term non-cleaning of residual materials in the hopper leads to material deterioration and agglomeration, which blocks the feeding channel. In addition, frequent start-stop of the side feeder will cause material vibration and layering, accelerating the formation of material arches.
4. Comprehensive Production Losses and Cost Risks Caused by Bridging Failures
4.1 Direct Product Quality Losses
Side feeder bridging directly causes unstable formula proportion of modified plastic products. Intermittent material cutoff leads to insufficient filler and additive content, making the product fail to reach the standard in hardness, toughness, flame retardancy, and weather resistance. For high-precision modified plastics used in automobiles, electronics, and electrical appliances, slight formula deviation will lead to unqualified product testing indicators, resulting in batch waste.
Unstable feeding will cause uneven mixing of materials, with local filler agglomeration and poor dispersion, resulting in defective product appearance such as material particles and surface bulges. The defective rate caused by bridging failures in ordinary compounding production can reach 3% to 8%, and the defective rate of high-filler formula production is as high as 10% to 15%, bringing huge direct quality losses to enterprises.
4.2 Production Efficiency and Time Cost Losses
Bridging failures force frequent production shutdowns and manual intervention. For medium-sized twin screw compounding lines, each bridging troubleshooting and material arch breaking takes 10 to 20 minutes. Frequent failures will reduce the effective operating time of the equipment by 1.5 to 3 hours every day, directly reducing the daily output by 8% to 15%.
Long-term repeated failures will disrupt the continuous production plan, delay order delivery cycles, reduce enterprise production capacity, and affect customer order cooperation confidence. The time cost loss caused by production stagnation far exceeds the direct material waste loss, becoming an important factor restricting enterprise profit improvement.
4.3 Labor and Maintenance Cost Increase
Recurring side feeder bridging requires special operators to monitor and intervene in real time, increasing enterprise labor input. Manual arch breaking, material sorting, and equipment cleaning increase daily labor intensity and labor cost expenditure. Calculated based on industrial average labor costs, the annual additional labor cost loss caused by bridging failures for a single production line is 800 to 1500 US dollars.
Long-term unstable feeding will cause alternating load impact on the side feeder motor and transmission structure, accelerating the wear of gears, bearings, and screws. Frequent startup and shutdown will also cause electrical component aging, increasing the frequency of equipment maintenance and accessory replacement. The annual additional maintenance cost brought by bridging failures is about 500 to 1000 US dollars per production line.
4.4 Potential Safety and Equipment Hidden Dangers
Manual poking and arch breaking during equipment operation has great safety hazards. Improper operation may contact the rotating screw, causing mechanical injury accidents. Residual high-temperature materials in the extrusion barrel may overflow during material cutoff and restart, causing scald risks.
Long-term idling and overload operation of the side feeder will cause motor overheating and current fluctuation, which may trigger circuit failure and equipment alarm in serious cases, affecting the overall service life of the twin screw compounding line. Unstable feeding pressure will also cause abnormal vibration of the main engine, accelerating the wear of core components such as screws and barrels.
5. Targeted Solutions for Different Grades of Side Feeder Bridging
5.1 Emergency Elimination Methods for Light Intermittent Bridging
For occasional light intermittent bridging in daily production, simple and efficient emergency solutions can be adopted without stopping production. Turn on the automatic vibration device of the side feeder at low frequency, and use mild vibration to destroy the unstable material arch structure. Appropriately reduce the side feeding speed by 5% to 10% to reduce the pressure of material stacking, improve material fluidity, and avoid arching caused by rapid feeding.
Check the material level inside the hopper in real time to avoid excessive material stacking. Keep the material stacking height within the standard range to reduce the compression force of upper materials on the bottom materials. Strengthen workshop ventilation and dehumidification to reduce material moisture absorption, improve particle fluidity, and effectively inhibit intermittent bridging recurrence.
5.2 Rapid Resolution Measures for Medium Continuous Bridging
When medium continuous bridging occurs, stop feeding appropriately without stopping the main engine to avoid continuous generation of defective products. Start the high-frequency vibration mode of the side feeder, and assist in breaking the material arch through uniform external vibration. For materials with serious wall adhesion, use professional soft tools to clean the adhered material layer on the inner wall of the hopper to smooth the feeding channel.
Detect the material moisture content in real time, remove damp and agglomerated materials, and replace with dry and loose raw materials. Appropriately adjust the matching ratio of main engine speed and side feeding speed to balance the feeding negative pressure, eliminate the hollowing phenomenon inside the materials, and restore stable feeding. After troubleshooting, conduct low-load trial production for 30 minutes to confirm no bridging recurrence before resuming formal production.
5.3 Complete Disassembly and Repair Scheme for Severe Hard Bridging
For severe hard bridging and hard blockage, formal shutdown maintenance is required. Cut off the equipment power, disassemble the side feeder hopper and feeding barrel completely, and manually remove hardened materials and fixed agglomerates inside the equipment. Polish and smooth the rough inner wall of the hopper to eliminate residual material attachment points and reduce particle adhesion.
Check the aging and damage of vibration devices, sensors, and sealing accessories, replace failed accessories in time, and calibrate feeding parameters. Dry and dehumidify the raw materials in batches, screen out large agglomerates and impurities, and ensure the purity and dryness of feeding materials. After reassembly, conduct full-load pressure test operation to completely eliminate hidden dangers of hard bridging.
6. Long-Term Prevention and Optimization Strategies to Avoid Recurrent Bridging
6.1 Raw Material Pretreatment and Storage Optimization
Establish standardized raw material pretreatment procedures for modified compounding production. Carry out drying and dehumidification treatment for powdery and fibrous materials before feeding to control the material moisture content within 0.2% to 0.5%, effectively reducing particle adhesion and agglomeration. Use professional screening equipment to screen raw materials to remove large particles, impurities, and agglomerated blocks, ensuring uniform material particle size and good fluidity.
Optimize material storage conditions, adopt closed moisture-proof storage equipment, avoid long-term exposure of raw materials in humid air, and prevent moisture absorption and compaction. Implement the principle of first-in first-out for raw materials to avoid long-term stacking and deterioration of materials, fundamentally reducing the probability of bridging caused by material problems.
6.2 Equipment Structural Upgrade and Accessory Optimization
Upgrade the traditional single straight cone hopper structure to a multi-stage variable-diameter hopper with optimized cone angle, which can effectively reduce material stacking pressure and avoid outlet extrusion arching. Paste high-temperature wear-resistant smooth lining on the inner wall of the hopper to reduce material friction and wall adhesion, improving material sliding fluidity.
Replace the ordinary fixed-pitch feeding screw with a customized variable-pitch screw according to material characteristics, realizing stable conveying of powder, fiber, and flaky materials. Install a high-sensitivity automatic exhaust device on the feeding barrel to eliminate internal negative pressure and air accumulation, avoiding material hollowing and bridging caused by negative pressure adsorption.
Upgrade the intelligent vibration system, equipped with adjustable frequency and amplitude vibration devices, which can automatically start vibration according to material level and feeding status to prevent material arching in real time, realizing unmanned automatic anti-bridging operation.
6.3 Scientific Production Parameter Matching and Adjustment
Formulate targeted parameter matching schemes for different formula materials. For low-fluidity powder fillers, appropriately reduce side feeding speed and match low-speed and stable main engine operation parameters to ensure synchronous material falling and conveying. For fibrous reinforced materials, optimize screw rotating speed to avoid material winding and stacking.
Establish parameter file management for different production formulas, record the optimal matching parameters of main engine speed, side feeding speed, and vibration frequency, and realize one-click parameter calling during batch production to avoid parameter mismatch induced bridging failures. Regularly calibrate feeding accuracy and sensor data to ensure stable and accurate feeding volume.
6.4 Standardized Daily Operation and Maintenance Management
Formulate standardized daily operation specifications for side feeders. Prohibit one-time large-scale material pouring, adopt uniform and quantitative feeding methods to avoid excessive material stacking pressure. Clean the hopper inner wall and feeding channel thoroughly after daily production to remove residual materials and avoid long-term agglomeration and hardening.
Implement daily inspection, weekly maintenance, and monthly overhaul system. Check the sensitivity of vibration devices, the smoothness of feeding screws, and the accuracy of material level sensors every day. Fasten loose bolts and clean residual impurities weekly. Disassemble and inspect the whole side feeder monthly to replace aging accessories and eliminate potential failures in advance.
7. WANPLAS High-Stability Twin Screw Compounding Line and Side Feeding System Recommendation
WANPLAS has long been committed to the R&D and manufacturing of high-performance twin screw compounding extrusion lines, focusing on solving common pain points such as unstable feeding, material bridging, and uneven mixing in modified plastic production. All WANPLAS twin screw compounding lines are equipped with self-developed optimized anti-bridging side feeding systems, which fundamentally solve the problem of recurring side feeder bridging in traditional equipment, ensuring long-term stable continuous production of compounding lines.
7.1 WANPLAS High-Performance Twin Screw Compounding Extrusion Line
WANPLAS twin screw compounding line adopts optimized screw and barrel modular design, with accurate shear and temperature control performance, suitable for various complex formula production such as high-filler modification, glass fiber reinforcement, flame retardant blending, and recycled plastic compounding. The whole line is equipped with an intelligent linkage control system, realizing synchronous matching of main engine operation and side feeding speed, avoiding feeding fluctuation and negative pressure abnormality caused by parameter mismatch.
The equipment has stable operation, low failure rate, and strong material compatibility. It can adapt to the production of various low-fluidity powder and fibrous materials, effectively reducing the occurrence of feeding bridging failures. The intelligent monitoring system can real-time monitor feeding volume, material level, and operating status, automatically early warn abnormal feeding, and help operators eliminate hidden dangers in advance.
7.2 WANPLAS Optimized Anti-Bridging Side Feeding System
The supporting customized side feeding system of WANPLAS compounding line adopts multi-stage variable-diameter anti-arching hopper structure, which scientifically optimizes the material stacking angle and falling trajectory, fundamentally destroying the formation conditions of material arches. The inner wall is pasted with imported ultra-smooth anti-adhesive lining to completely solve material wall adhesion and accumulation problems.
Equipped with an intelligent frequency-conversion vibration anti-bridging device, it can automatically adjust vibration frequency and amplitude according to different material characteristics and feeding status, realizing real-time anti-bridging without affecting feeding accuracy. The independent negative pressure exhaust system eliminates air accumulation in the feeding barrel, ensures smooth material falling, and completely avoids hollowing and bridging failures.
The customized variable-pitch feeding screw is specially designed for powder, fiber, and flaky materials, with stable conveying and strong anti-blocking ability. It can maintain accurate quantitative feeding under long-term high-load operation, ensuring formula stability and product consistency.
7.3 WANPLAS Customized Feeding Solution for Special Working Conditions
For special working conditions such as ultra-high filler content modification, ultrafine powder blending, and long-term continuous recycled plastic production, WANPLAS provides personalized customized feeding system solutions. According to material fluidity, particle size, and production output requirements, customize hopper structure, screw parameters, and anti-bridging configuration to solve bridging problems under extreme working conditions.
8. Equipment Upgrade and Operation Cost-Benefit Analysis
8.1 2026 Side Feeder Optimization and Upgrade Price Estimation
The overall upgrade cost of transforming ordinary traditional side feeders into WANPLAS anti-bridging optimized side feeding systems ranges from 2,800 to 4,200 US dollars per set. The basic vibration and lining optimization upgrade is priced at 2,800 to 3,300 US dollars, suitable for conventional powder material production. The full intelligent anti-bridging upgrade including customized screw and intelligent linkage system is priced at 3,300 to 4,200 US dollars, suitable for high-filler and fibrous material complex production conditions.
The matching cost of purchasing a complete WANPLAS twin screw compounding line with original anti-bridging side feeder configuration is 6% to 8% higher than that of ordinary compounding lines, but it has inherent stable feeding performance and no need for later repeated transformation and maintenance.
8.2 Daily Operation and Maintenance Cost Comparison
Ordinary traditional side feeders have frequent bridging failures, requiring daily manual intervention and regular accessory replacement, with an annual comprehensive maintenance and labor cost of 1,300 to 2,500 US dollars per set. WANPLAS optimized anti-bridging side feeding system has a failure rate reduced by more than 85%, no need for frequent manual intervention, and the annual maintenance and labor cost is only 300 to 500 US dollars, saving a large amount of long-term operating costs for enterprises.
The optimized equipment has stable feeding accuracy, greatly reducing the defective rate and material waste loss. The annual material and quality loss saving of a single production line can reach 3,000 to 6,000 US dollars, with extremely prominent cost advantages.
8.3 Investment Return Cycle Analysis
For enterprises adopting old equipment transformation and upgrading, the total annual cost saving of labor, maintenance, material waste, and defective product loss is about 4,000 to 8,000 US dollars. The one-time upgrade investment can be fully recovered within 6 to 12 months, and stable profit benefits can be formed in the later stage. For enterprises purchasing new WANPLAS compounding lines, the comprehensive cost difference can be recovered within 1 to 1.5 years, and the long-term stable production efficiency and product quality advantages can bring continuous economic benefits.
9. Common Troubleshooting and Quick Solution Guide
9.1 Vibration Normal but Still Bridging
This fault is mainly caused by unreasonable vibration frequency, excessive material stacking, or hopper wall adhesion. The solution is to adjust the vibration frequency and amplitude to match material characteristics, reduce the material stacking height in the hopper, clean the adhered material layer on the inner wall, and smooth the feeding channel to restore normal material falling.
9.2 Feeding Unstable after Long-Term Operation
Long-term operation leads to screw wear, lining aging, and sensor deviation, resulting in unstable feeding and intermittent bridging. It is necessary to check the screw wear degree, replace aging anti-adhesive lining, calibrate sensor data, and optimize operating parameters to restore feeding stability.
9.3 Bridging Occurs Frequently in Humid Environment
Humid environment leads to material moisture absorption and increased particle adhesion. It is necessary to strengthen workshop dehumidification and raw material drying pretreatment, increase the frequency of material inspection, timely remove damp agglomerated materials, and upgrade the closed moisture-proof feeding structure to adapt to high-humidity production environments.
10. Conclusion
Side feeder bridging is a key bottleneck restricting the stable production of twin screw compounding lines, which will cause a series of problems such as unstable product quality, reduced production efficiency, increased operating costs, and potential safety hazards. The root causes of bridging failures cover material characteristics, equipment structure, production environment, and operational standards. Enterprises need to adopt targeted solutions according to different bridging degrees, combined with raw material pretreatment, equipment optimization and upgrading, standardized operation and maintenance, to completely eliminate recurring bridging problems.
Adopting WANPLAS high-performance twin screw compounding lines and optimized anti-bridging side feeding systems can fundamentally solve the pain points of side feeder bridging in modified plastic compounding production. The intelligent anti-bridging structure and stable parameter matching performance ensure long-term accurate and stable feeding of various complex materials, reduce enterprise comprehensive operating costs, improve product qualification rate and production efficiency, and help plastic modification processing enterprises achieve high-efficiency, high-quality, and low-cost continuous production.
