The devolatilization process can be a major factor in the production of high-quality polymers. Small to large amounts of volatiles must be removed from the polymer melt solution or the solid polymer pellets to produce these high-quality polymers. With over 70 years of proven twin-screw polymer devolatilization technology, NFM / Welding Engineers continues to  pursue new advancements in residuals minimization, contained and recoverable waste streams, and broadening the field of devolatilized thermoplastic and rubber polymers.

Utilizing our on-site pilot facility, NFM is 100% committed to the continual development of new polymer devolatilization equipment and creating advancements in devolitization processes.

NFM/WE Devolatilization Technology Includes:

  • Patented multi-stage venting
  • Rear venting
  • Counter-current and co-current stripping
  • Streamlined pre-concentration systems
  • Large-scale processing techniques for extrusion drying of elastomer solutions

Advantages of NFM/WE’s Polymer Devolatilization Technology:

  • Capable of handling many viscosity levels
  • Contained and recoverable waste systems
  • Short residence time
  • Fast changeovers
  • Minimal thermal history
  • Efficient heat transfer
  • Narrow residence time distribution
  • Efficient surface renewal

Common Devolatilized Polymers 

Styrenic Materials

SAN | ABS | SMA | PS | SB-Copolymers
SIS, SEBS, &  SBS Block Copolymer

Engineering Thermoplastics

Polyacrylate | PEI

Synthetic Rubber

SBR | SSBR | EPDM | PBd | Silicones
BR | NiBR | MdBR | PI

Other Polymers

PMMA | PE | PP | Expoxies
Metallocenes

WE Series Extruder Capacities

Process Development & Pilot Facilities

NFM/WE has taken a comprehensive approach to the devolatilization process in order to assure performance in each stage of the process from the reactor to the finished pellet or crumb. NFM/WE has in-house expertise in concentration systems, twin-screw extruders, and specialty pelletizing systems for elastomers.

NFM/WE’s Class 1 Div 2 pilot plant enables us to demonstrate the solution devolatilization of polymers with feed concentrations between 6% and 70%. Feeding rates of up to 400 kg/hr have been demonstrated from 25% solids.

The Pilot Plant has been continuously upgraded since its opening in 2004 and includes capabilities which are truly unique in North America. Equipment in the Pilot Plant is of sufficient size to ensure that at the conclusion of a trial, the process is ready for scale up.

Examples of Major Process Development Projects:

Isolation of:Solvent:
Solids Content
BRMethylene Chloride
25%
Elastomer (Proprietary)Acetone
20%
EPDMHexane
7-15%
Metallocene Polymer Heptane
25%
NdBRHexane
8.50%
NiBRHexane
15%
Olefin Polymer (Proprietary)Isopentane
10%
PolyisopreneHexane or Pentane
10-15%
Polypropylene CarbonateEthyl Acetate
15-25%
Polystyrene (Halogenated)Halogenated Solvent
60%
SBS Block CopolymerCyclohexane
12-20%
SIS Block CopolymerCyclohexane
14-30%
SSBRCyclohexane
10%

LEARN MORE ABOUT THE WE SERIES

COUNTER-ROTATING NON-INTERMESHING TWIN SCREW EXTRUDERS

TEST YOUR APPLICATION WITH
NFM’S PROCESS DEVELOPMENT LAB

OUR INNOVATIVE EXTRUSION TEST PILOT PLANT ALLOWS OUR CUSTOMERS TO PERFORM LAB-SCALE DEVELOPMENT AND SMALL PRODUCTION RUNS TO SIMULATE ACTUAL FIELD PRODUCTION CONDITIONS.
FOR MORE INFORMATION, CALL US AT 330-837-3868 OR FOR INFORMATION REGARDING A SPECIFIC PRODUCT OR APPLICATION CLICK HERE.

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NFM /  Welding Engineers, Inc. is a leading global OEM for rubber and plastics extrusion systems. NFM offers full turnkey extrusion systems featuring custom-integrated controls and the highest level of extrusion technology and performance. As the leader in extrusion system design, manufacturing, support and service, NFM is your best resource for reliable extrusion performance.

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NFM Locations

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Thank you for your interest in NFM. Please contact us using the information below. For information regarding a specific product or application, click here.

  •  577 Oberlin Road, Massillon, OH 44647-7899
  •  1.330.837.3868

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