Author: 工集君

Nanjing Kerke Extrusion Equipment Co.,Ltd. has successfully completed full-process factory testing of its customized KTE65+SE150 two-stage extrusion and pelletizing production line. The equipment is set to be shipped to Russia to support a local customer’s mass production project for black masterbatch.
This production line was specifically customized for black masterbatch applications with high carbon black content and employs a classic two-stage series process: the first-stage KTE65 co-rotating twin-screw extruder is responsible for thoroughly mixing and dispersing the carbon black and carrier resin, independently completing the wetting and deflocculation of the powder;The second-stage SE150 single-screw extruder maintains melt pressure and stabilizes the delivery of material to the die head. Separating the mixing and pressure-building processes effectively addresses industry pain points associated with high-filler carbon black processing—such as localized overheating, material degradation, and frequent screen clogging—ensuring uniform and stable blackness.
The production line is equipped with a water-ring hot-cutting system that produces spherical particles with a uniform appearance. A complementary loss-in-weight automatic feeding and batching system ensures precise metering of carbon black, resin, and additives, reduces dust generation, and guarantees formulation consistency.The entire equipment set is equipped with a PLC control system that supports a Russian-language operating interface. Electrical and lubrication components are optimized for the low-temperature workshop environments in Russia, ensuring compatibility with local operating conditions.The equipment has a stable production capacity of 300–500 kg/h, with a maximum carbon black loading of 50%. It is suitable for black masterbatches based on PE and PP carriers and is widely used in pipe manufacturing, film blowing, and injection molding.
The successful implementation of this project represents a significant step in Kerke Rubber & Plastic Modification Equipment’s ongoing commitment to the Russian market. The company will simultaneously provide Russian-language operating manuals, on-site commissioning services overseas, and long-term remote technical support to ensure stable production for its international clients.In the future, Kerke will continue to optimize its two-stage mixing and pelletizing technology to provide comprehensive extrusion solutions for masterbatch and new materials customers worldwide.

The PET waste recycling and granulation production line has completed assembly and commissioning in the workshop. The production line is designed with a capacity of 1 t/h and is specifically designed for the resource recycling of waste PET materials such as PET bottle sheets and PET films. Its core equipment is an underwater granulation system and a wire-free melt filter.
The entire production line achieves continuous production integrating automatic feeding, extrusion plasticization, melt filtration, underwater granulation, dehydration and cooling. The meshless filter supports online continuous slag discharge, eliminating the need for frequent downtime and filter replacement, reducing downtime losses, effectively improving the continuity of PET recycling production, and reducing manual maintenance costs.
The underwater granulation process completes granulation and cooling in a water environment, inhibiting the high-temperature degradation of PET, resulting in round and uniform granules and stable quality of finished recycled materials, which can be supplied to downstream industries such as chemical fibers and packaging.
With the continued development of the global plastics circular economy, this equipment is suitable for waste PET recycling projects, helping recycling companies improve production capacity and product stability, and meeting the production needs of sustainable recycled materials both domestically and internationally.

Cork Extrusion Equipment completed the assembly and in-plant joint commissioning of a small medical polymer granulator unit. The equipment is designed with a capacity of 315kg/h and is suitable for the formulation research and development, small-scale trials and small-batch production of medical biodegradable materials and pharmaceutical excipients. It is compatible with two cooling processes: air-cooled strip drawing and water-cooled strip drawing, and can be flexibly switched according to the material characteristics.
The whole production line is equipped with a high-speed mixer, a co-directional twin-screw extruder, a cooling and conveying unit, and a pulling and pelletizing machine. The equipment can quickly switch cooling schemes: when using air cooling mode, the water tank is eliminated, and the entire process is dry cooled to avoid water absorption and hydrolysis of materials and water impurity pollution. No drying process is required, and it is suitable for easily hydrolyzed and sensitive medical polymers such as PLGA, PLA, and medical TPU. When switching to water cooling mode, the water tank is connected for cooling, which has higher cooling efficiency and is suitable for the processing and trial production of water-resistant medical modified polymers and general modified materials.
The main unit adopts a building block twin-screw structure. The barrel and screws can be mirror-polished and anti-corrosion treated, making disassembly, assembly and cleaning convenient and reducing the residue of high-value medical materials. The segmented, independent, precise temperature control system, combined with a vacuum devolatilization system, effectively removes monomers and low-molecular-weight volatiles, reduces the thermal degradation of polymers, and ensures the purity of the output material. The cooling and conveying section supports variable frequency speed regulation, and the wind speed and traction speed can be adjusted to ensure stable material strip forming; The particle length of the particle cutting mechanism is adjustable, and the particle size is uniform.
This model mainly serves pharmaceutical company R&D centers and university new materials laboratories, taking into account formula prototyping and small-batch trial production, and reducing the testing losses of expensive medical raw materials. The entire machine can be customized according to cleanliness requirements and adapted to medical material process verification scenarios. The equipment itself does not represent GMP certification; the workshop cleanliness conditions and a complete set of verification documents must be provided by the customer.
The iteration of new medical polymer materials is accelerating, and different materials have significantly different requirements for cooling processes. One set of equipment is compatible with both air-cooling and water-cooling processes, which can cover more R&D sample needs. Kerke continues to optimize extrusion equipment solutions and provide extrusion solutions to address the pain points of specialty polymers and medical materials. After completing factory testing, the unit will be shipped to the customer’s site for use.

Nanjing Kerke Extrusion Equipment Co.,Ltd. has confirmed its participation in the 2026 HighlyFunctional Plastic Expo in Tokyo, Japan. The exhibition will be held from September 30 to October 2, 2026 at the MAKUHARI MESSE in Chiba, Japan. Kork’s booth number is Hall2Plastic, 1139.
This Japan High-Performance Plastics and Composites Exhibition is a highly influential professional industry event in the fields of polymers, modified plastics, and composites in the Asia-Pacific region. It brings together upstream and downstream companies from home and abroad in modified granulation, elastomers, and new polymer materials, focusing on cutting-edge technologies and complete sets of equipment for high-performance material processing, modified mixing, and recycling.
Nanjing Kerke focuses on the research and development and manufacturing of complete production lines for twin-screw extruders, and its products are widely used in fields such as TPE/TPU elastomers, plastic modification, filling and blending, and PET recycling and granulation. During this exhibition in Japan, the company will showcase its domestically produced complete sets of mixing and extrusion equipment solutions to the Japanese and surrounding East Asian markets, conduct technical exchanges with local material manufacturers and trade buyers, and explore cooperation possibilities such as equipment customization, project support, and localized supporting services.
“The Japanese new materials market has high requirements for equipment stability and process compatibility, and it is also one of the overseas markets that Cork is focusing on cultivating. We hope to use this exhibition platform to directly address the needs of end customers, export extrusion and granulation equipment adapted to East Asian operating conditions, and expand our B-end overseas channels.” A company representative stated.
During the exhibition, industry colleagues are welcome to visit HALL2PLASTIC, booth 1139, to discuss and explore the development opportunities of polymer material processing equipment.

Cork will be exhibiting at the 2026 Vietnam International Plastics and Rubber Industry Exhibition (VietnamPlas) in Ho Chi Minh City, Vietnam. The exhibition will grandly open on September 12, 2026 at the Saigon International Convention and Exhibition Centre (SECC). Cork’s booth number is B207.
VietnamPlas is a highly influential professional exhibition for the rubber and plastics industry in Southeast Asia, bringing together companies related to rubber and plastics equipment, new materials, and recycling and granulation from around the world. It is an important platform for connecting with the Vietnamese and Southeast Asian markets, for industry technology exchanges, and for business negotiations. With the rapid development of the plastics processing and recycling pelletizing industry in Southeast Asia, the local demand for high-performance twin-screw extrusion, densification pelletization, recycling and modification complete sets of equipment continues to rise.
Nanjing Kerke has been deeply involved in the extrusion equipment field for many years, focusing on complete solutions for twin-screw extruders, internal mixers, underwater pelletizing systems, and plastic recycling, modification, and granulation. Its products are widely used in many fields such as TPE/TPR/TPU modification, filling and blending, PET recycling and regeneration, and degradable materials. Its products are exported to many overseas regions such as Southeast Asia and Latin America, providing stable and reliable domestically produced complete sets of equipment for many rubber and plastic enterprises.
At this exhibition, Kerke will showcase mature equipment and technical solutions in the fields of modified granulation and recycling to rubber and plastics customers in Southeast Asia. On-site, it will exchange process pain points with visiting customers, discuss customized equipment solutions, and help local enterprises reduce costs and increase efficiency.
Exhibition Information
Exhibition Name: 2026 Vietnam Ho Chi Minh International Plastics and Rubber Industry Exhibition
Launch date: September 9-12, 2026
Booth: B207
Venue Address: Sai Kung International Convention and Exhibition Centre
Nanjing Kerke sincerely invites new and old customers and industry colleagues from home and abroad to visit and exchange ideas at booth B207, face-to-face negotiations and cooperation, and jointly explore new business opportunities in the Southeast Asian rubber and plastics market.

The special co-parallel twin-screw extrusion granulator with high filling independently developed and manufactured by Nanjing Kerke Extrusion Equipment Co., Ltd. completed the final assembly and commissioning at the company’s production base and officially rolled off the assembly line. The unit is specially optimized for the filling and granulation conditions, with a stable production capacity covering 200-500kg/h, which marks the further improvement of Kerke’s technical strength in the field of high-filling powder modification equipment.
Special optimization to adapt to high filling conditions
This off-line unit adopts Kerke’s classic parallel twin-screw design with co-directional building blocks, and has made special configuration upgrades for the processing characteristics of high-filling systems such as calcium carbonate, talc, titanium dioxide and glass fiber:
High-torque drive system: High-power variable frequency main motor with high-torque reduction box, strong load-bearing capacity, can stably cope with the continuous mixing and extrusion of high viscosity and high filling materials;
Segmented alloy cylinder: It adopts segmented structure, accurate temperature control, wear and corrosion resistance, and adapts to the process adjustment requirements under different filling ratios;
• Forced side feeding system: Equipped with independent frequency conversion forced side feeding unit to ensure the uniform addition of powder filler, avoid bridging and feeding fluctuation, and ensure the consistency of finished particle filling degree;
• Integrated thickened base: The whole machine adopts an integrated thickened steel structure base, which runs smoothly and has little vibration, which is suitable for long-term continuous industrial production.
Wide Applications, Empowering Modified Material Manufacturing
The unit can be widely used in filling and modification granulation of general and engineering plastics such as PP, PE, ABS, PA, etc., and is suitable for filling masterbatch, high-filling composite materials, cable materials, modified plastics for automobiles and other fields. The output particles are uniform and dispersible, which can meet the requirements of raw material quality in downstream injection molding, extrusion and other processes.
Deep cultivation of extrusion equipment and continuous technological innovation
Nanjing Kerke Extrusion Equipment Co., Ltd. is a high-tech enterprise specializing in R&D and manufacturing of co-directional parallel twin-screw extrusion granulator. Its products cover a full range of models from laboratory test to industrial mass production, and more than 2,000 production lines have been put into production, which are exported to more than 70 countries and regions around the world. Driven by technological innovation, the company continues to provide high-performance equipment solutions for the fields of plastic modification, masterbatch, engineering plastics, biodegradable materials and waste plastic recycling.

Kerke KTE 36B twin-screw underwater cutting and granulating unit has completed the debugging of the whole machine, and the whole production line is running in a stable state. It is specially customized for TPU, TPE, TPR, SBS and other elastomer materials, with an hourly production capacity of 60 100kg, which is suitable for the processing needs of small batches and multi-category elastomer masterbatch.
Equipment Core Configuration and Process Advantages
1. The exclusive process of underwater pelletization is equipped with a complete set of underwater pelletization system. The elastomer melt is cooled and pelletized immediately after entering the water, and the particles are round and free of adhesion, which perfectly avoids the pain points of broken strips, sticking strips and agglomeration of TPU and TPE soft materials, eliminates the subsequent strip cutting and air drying processes, and makes the production process more streamlined.
2. Excellent screw mixing performance. The twin-screw cavity structure has uniform shear, which can complete the full blending of elastomer substrate, auxiliary agent and plasticizer, evenly dispersed materials, stable physical properties of finished particles, and is suitable for various formulation processes of modification, filling and blending.
3. The standard production capacity of the wide capacity adaptation interval equipment is 60 100kg per hour, and the output can be flexibly controlled according to the proportion of formula filler and material viscosity, which is very suitable for sample research and development and mass production of small and medium-sized elastomer factories.
Adaptation of processing materials
The equipment is optimized for soft elastomer materials, and can produce TPU polyurethane elastomer, TPE thermoplastic elastomer, TPR thermoplastic rubber, SBS styrene elastomer and various elastomer modified masterbatches.
Composition of whole machine and whole production line
Weightless feeding main machine, twin-screw extrusion main machine, melt conveying assembly, underwater pelletizer head, water circulation cooling system, centrifugal dehydrator, screening device and electronic control cabinet, realize the whole process automation operation from raw material dosing to finished granule discharge.
Relying on the mature research and development experience of elastomer granulation equipment, Kerke can customize the aspect ratio, screw component combination and temperature control scheme according to the customer’s formula, providing a one-stop extrusion granulation overall solution for rubber and plastic modification manufacturers.

The dual-purpose twin-screw granulation production line of water ring pull bar customized by overseas customers in Bangladesh successfully completed the raw material test and acceptance in the company’s production workshop. The production capacity and process indicators of the equipment have reached the standards, and it will be delivered to sea soon.
This customized production line is specially built for the recycling granulation of PE polyethylene materials, and the hourly stable production capacity of the equipment can reach 300-400kg/h. The biggest highlight of the unit is the free switching of dual processes. One set of main engines can be compatible with two sets of mature granulation modes of water ring hot cutting and water-cooled pulling strip, which can meet the diversified raw material production needs of customers.
In the test stage of water ring hot cutting condition, after PE raw materials are fully plasticized and kneaded by twin screw main machine, the die discharge material is immediately completed by underwater cutting assembly for hot cutting granulation; The particles are quickly cooled and formed in the water circulation cavity, and the spherical finished particles are round and compact, which can efficiently adapt to the processing and production of PE film soft recycled materials, and have the advantages of fast discharge speed, difficult particle adhesion and outstanding production efficiency.
In the water-cooled drawing mode, a plurality of regular material strips are extruded from the molten material, which are fully cooled and hardened by an extended water-cooled water tank and then transported to a pelletizing equipment to obtain standard cylindrical particles by cutting. The process has stable operation and low debugging threshold, and is suitable for processing hard materials such as PE modified raw materials and filling masterbatch. Customers can switch auxiliary components at any time according to raw material categories, flexibly switch between two sets of production processes, and one production line takes into account various PE particle processing businesses, greatly improving the comprehensive utilization rate of equipment.
The whole extrusion unit is equipped with a co-directional parallel twin-screw host, which has excellent plasticizing and mixing performance, and can be used in various production scenarios such as PE recycling, modified blending, filling masterbatch processing, etc. The water cooling circulation system of the whole machine is optimized for local working conditions, and the cooling performance is stable for long-term operation, ensuring the continuous production capacity output of 300-400kg per hour. The modular fuselage structure is also convenient for disassembly, installation and post-maintenance of overseas sites, laying a solid foundation for Bangladesh customers to put into operation in the later stage.
In recent years, the company has continued to deepen the overseas plastic recycling equipment market, relying on customized equipment solutions, and exported complete sets of high-performance extrusion granulation equipment to many countries in Southeast Asia. The successful trial of this dual-purpose model once again confirms the recognition of multifunctional composite plastic machinery and equipment in overseas markets. Subsequent enterprises will continue to polish the technical strength of extrusion equipment and broaden the overseas market track.

Recently, our customized ECM250S continuous mixer unit has completed the whole process of factory inspection and online acceptance by customers. All the operating parameters and process performance of the equipment have reached the standard, and the complete assembly is waiting to be shipped to the Brazilian production base.
Accurately match customer working conditions, adapt to multi-masterbatch production conditions, and have strong process coverage
This continuous internal mixing system with an output of 200 kg per hour is extremely versatile, and can be widely adapted to the production of mainstream rubber-plastic modified products such as high-filled calcium carbonate masterbatch, talc powder filling masterbatch, carbon black conductive masterbatch and color functional color masterbatch, and accurately match the mass production demand of EVA high carbon black filler of Brazilian customers. The whole set of equipment realizes the continuous operation of the whole process of feeding, internal mixing, extrusion and discharge, and the staying time of materials in the cavity is accurate and controllable. It is equipped with a vacuum negative pressure exhaust system, which can efficiently remove the water vapor and low molecular volatiles inside the materials, improve the density and appearance quality of masterbatch finished products from the source, and adapt to the normalized continuous production operation of large-batch and fixed formula in the factory.
Compared with traditional batch internal mixing, the production advantage is outstanding
1. Higher production efficiency: Abandoning the intermittent operation mode of intermittent feeding and waiting for discharge, the whole production line can stably maintain 200kg/h discharge operation for a long time, and it is suitable for the automatic extrusion granulation line, and the utilization rate of unit capacity is greatly improved.
2. The shear working condition is milder: the controllable mixing shear strength can not only ensure the uniform dispersion of powder filler, but also not cause excessive shear degradation of polymer matrix, thus stably ensuring the mechanical properties of materials;
3. High process consistency: real-time closed-loop adjustment of various parameters of temperature, pressure and speed, minimal fluctuation of color difference and dispersion of different batches of products, and the quality stability of finished products is far better than that of intermittent production mode;
4. Lower operation and maintenance cost: the continuous structure has balanced heating, and the global water cooling + zoned precision heating system has more advantages in equipment loss and energy consumption control.
Hard-core customized configuration to build the bottom line of overseas delivery quality
The model of this Brazilian project adopts wear-resistant and corrosion-resistant core components such as double-alloy chrome-plated rotor and nitrided screw, and multi-section zoned temperature control, servo discharge and vacuum exhaust system are integrated and controlled. The equipment has gone through multi-layer quality inspection and audit of assembly and debugging, no-load trial operation and simulation calibration with materials, and successfully completed the acceptance with stable and reliable performance of the whole machine.
This equipment acceptance has further consolidated the company’s cooperation foundation in the South American rubber and plastic masterbatch equipment market. Kerke will continue to provide stable and efficient continuous production equipment support for rubber and plastic modification enterprises at home and abroad with customized complete sets of mixing and extrusion schemes.

Type 65 twin-screw granulating unit of Kerke  Extrusion Equipment Co., Ltd., which supports the PET recycling project in Korea, was successfully delivered to the customer’s factory area. The company sent a professional technical team to the site to complete the whole process delivery of equipment in-place assembly, online debugging of the whole machine and on-site practical training. The designed capacity of this machine can reach 300KG/h, the operation parameters of the equipment have passed the calibration, the operation conditions are stable, and the mass production conditions of PET waste recycling granulation are officially met.
Site Implementation Details
The equipment delivered this time is specially customized and developed for the customer’s PET plastic recycling and recycling process. The 65 twin-screw host is equipped with intelligent touch operating system, accurate weight loss feeding system, multi-section zoned temperature control cylinder and independent supporting electric control cabinet. Our engineers successively completed pipeline connection, circuit verification, temperature calibration, transmission no-load test, and trial production debugging with materials, and strictly optimized the process parameters according to the 300KG/h rated capacity standard to ensure the stable and controllable quality of PET material plasticization, extrusion and granulation.
During the commissioning period, special technical training was carried out simultaneously, and the start-up and shutdown process of the unit, the allocation of PET processing technology parameters, the daily inspection specifications, the maintenance and replacement of wear parts, the emergency treatment of common faults, the regular maintenance plan of equipment, etc. were explained to the Korean production operators. Combined with the demonstration operation teaching of real machines, it was ensured that the partner personnel could independently complete the safe operation and basic maintenance of the whole PET recycling and granulation production line.
OVERVIEW OF CORPORATE
The successful delivery of PET recycling project equipment in South Korea is another achievement of Kerke  in the field of overseas waste plastics recycling. The company is deeply involved in the R&D and manufacturing of twin-screw extrusion granulation equipment, and has launched models with corresponding specifications for subdivided scenarios such as PET bottle chip recycling, plastic modification and new material granulation. At the same time, it is equipped with an integrated service system of door-to-door installation, on-site commissioning, face-to-face technical teaching and long-term after-sales support, providing complete sets of stable extrusion equipment solutions for renewable resources enterprises at home and abroad.
In the follow-up, Kerke  will continue to iterate the performance of recycling and granulation equipment, optimize the delivery service system of overseas projects, continuously expand the international cooperation territory, and empower the development of global new material processing industry with excellent product quality and professional technical services.