Cowin has the original R&D team of under water pelletizing system in China. We focus on the latest technology innovation which helps our UW series to be high quality and more competitive.

1. Full automatic pneumatic knife feeding system to guarantee stable and continuous production. Cutting blade which contacts the die head can be adjusted automatically after abrasion, thus to guarantee the precise contact between cutter and die head. With PLC controlling system to meet manual/automatic operation, touch screen makes the operation and maintenance easily.

2. Super anti-wear hard alloy cutting blade with constant pneumatic cutting adjusting system to guarantee a longer life span.

3.Modular Designed Tempered Water Circulating System to meet different requirement from customers. Every part can be installed independently which makes it easier and faster to replace.

4. Based on requirements of customers as well as the characteristic of raw materials. COWIN EXTRUSION super anti-wear hard alloy die plate, cutting blades, high efficient and low energy consumption heading system make the cutting result more perfect.


Typical application areas are:

Thermoplastic elastomers: TPS, TPO, TPV (PP/EPDM ), TPU, TPE, TPA

Hot Melt Adhesive

Other areas: masterbatch, filling modification, polymer blending, fiber reinforcement

When the preferred pellet shape is more spherical than cylindrical, the best alternative is an underwater hot-face cutter. With a capacity range from about 20 lb/hr to several tons/hr, this system is applicable to all materials with thermoplastic behavior. In operation, the polymer melt is divided into a ring of strands that flow through an annular die into a cutting chamber flooded with process water. A rotating cutting head in the water stream cuts the polymer strands into pellets, which are immediately conveyed out of the cutting chamber. The pellets are transported as a slurry to the centrifugal dryer, where they are separated from water by the impact of rotating paddles. The dry pellets are discharged and delivered for subsequent processing. The water is filtered, tempered, and recirculated back to the process.

The main components of the system-cutting head with cutting chamber, die plate, and start-up valve, all on a common supporting frame-are one major assembly. All the other system components, such as process-water circuit with bypass, cutting chamber discharge, sight glass, centrifugal dryer, belt filter, water pump, heat exchanger, and transport system can be selected from a comprehensive range of accessories and combined into a job-specific system.

In every underwater pelletizing system, a fragile temperature equilibrium exists within the cutting chamber and die plate. The die plate is both continuously cooled by the process water and heated by die-head heaters and the hot melt flow. Reducing the energy loss from the die plate to the process water results in a much more stable processing condition and increased product quality. In order to reduce this heat loss, the processor may choose a thermally insulating die plate and/or switch to a fluid-heated die.

COWIN EXTRUSION was founded in 2012 in NANJING, Jiangsu Province. There are more than 50 people working in the company of which 5 engineers,15 people for mechanical processing and management, 20 assembling workers and 5 people for after-sales service.

COWIN EXTRUSION always focuses on R&D of new technology & products, equipment process and manufacturing, and turnkey project of high polymer related processing equipments.

COWIN products are mainly composed:1. twin screw extruders 2. single screw extruders 3. two stage extruders 4. plastic machinery parts 5. plastic granulators 6. ancilliary

Our team has more than 20 years experience in extruder industry. We always focus on innovation during the development and we supply best quality products to customers of both China domestic and overseas.

We follow "win-win" model to support our overseas customers in Taiwan, Viet Nam, Malaysia, Indonesia, Singapore, India, Russia, Turkey, Latvia, French, South Africa, Canada, Mexico, and Brasil etc.

Pre-sales service:

1.Introducing in detail features and application of the products to customer

2.Selecting economical and practical machine & equipment for customer

3.Providing operation data of the related machine & equipment

4.Providing means of trial performance for customer


Sales service:

1.Recommending engineering conditions required for installation of the machine & equipment

2.Communicating in time the manufacturing progress of the machine with user

3.Providing assistance in technical conditions, screw combination and barrel disposition needed for product


After-service:

1.Providing on the spot technical assistance in installation, commissioning and training

2.Filing in detail customer's information

3.Providing long-term maintenance service and spare parts

4.Giving technical support to customer for developing new product

5.Providing free maintenance for a year

Packing:

The whole machine line can be divided into 4-8 wooden boxes. After applying the rust preventive oil, it is placed in a packaging film or a bubble film. Finally, Putting the machine in a wooden box and fix it with steel wire or nails.

Delivery:

10-30 days after confirming order,detail delivery date should be decided according to production season and order quantity.

1. Q: Are you a factory or trading company,How is you factory extrusion experience?

A: We are a factory. 7 years experience on extrusion.Leading supplier in Nanjing city.

2.Q: How long is your machine's guarantee time?

A: 1 year, Main parts is made of high tool steel by special quenching treatment, with high corrosion resistance and wear resistance.

3. Q:What can you provide for after sale service?

A: We provide on the spot technical assistance in installation, commissioning and training if you need.

4. Q:If we have very special request for the production line,could you help me to do the design?

A:We provide experienced mechanical designer customized-design.

5. Q: If we have samples of new products, can you help to analysis and design the machine?

A:Yes, our technical department can help you analyze, design and test the new products you offer.