With stiffening environmental regulations, pressure-sensitive adhesive users are switching from solvent-based to hot-melt systems. NFM’s twin-screw hot-melt extrusion technology makes it possible to save up to one-third the cost of the adhesive by compounding in-house. Our twin-screw mixing process, offers a higher melt quality and better process control than can be achieved in a single-screw process.

NFM offers proven solutions for hot-melt extrusion of both solid (pellet/flake) resins via traditional loss-in-weight feeders, as well as molten resins through our advanced molten resin feeding systems.

Typical Polymers & Applications

  • SIS Based Hot Melt Adhesives
  • EVA Based Hot Melt Adhesives
  • Acrylic Adhesives

Flake Resin Compounding

Molten Resin Compounding

Compounding Flexibility
  • NFM’s TEM Series co-rotating, intermeshing twin screw extruders offer ideal shear and mixing properties to hot-melt adhesive compounds.
  • NFM’s WE Series counter-rotating, tangential screw design provides thorough mixing of resins with a wide range of viscosities and melting temperatures, designed to generates high shear without high temperature to protect heat sensitive resins.
Multi-Stage Feed
  • Eliminates the need for pre-blending then high-melt viscosity polymers are introduced first and extruded into a uniform state by the twin-screw action.
  • Low-viscosity materials, which can be pre-melted if desired, are added downstream.
  • Oil can be injected into the barrel of the compounder in a final stage.
  • Continuous compounding action of the twin-screw mixing process improves quality control and produces a uniform hot-melt adhesive.
Short Resident Time
  • Twin-screw mixing virtually eliminates the cross linking of polymers that occurs during batch processing when high temperatures are maintained over extended periods. Residence time is often no longer than 15 seconds.
Low Operating Cost
  • NFM’s hot-melt adhesive compounding extruders are not labor intensive and utilize adiabatic extrusion for minimum energy cost per pound of product.
 
Diameter
Nominal Capacity
Drive
mm
Lbs/hr
(kg/hr)
hp
Laboratory
26
65
(30)
20
Pilot
41
240
(110)
75
Semi-Works
48
375
(170)
125
Commercial Scale
58
640
(290)
150
75
1,320
(600)
300
93
2,420
(1,100)
600
104
3,315
(1,500)
900
136
7,050
(3,200)
2,000

Learn more about the TEM Series

Co-Rotating Intermeshing Twin Screw Extruders

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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Locations

NFM Locations

Contact Us

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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