Continuous Filament Winding

Constant cross-section and tapered epoxy tubing for lightweight, stiff poles with maximum durability

Continuous filament winding produces constant cross-section and tapered epoxy tubing by combining the principles of filament winding with pultrusion. This process provides customers with lightweight, stiff poles for maximum durability. Unlike conventional filament wound or pultruded tubing, reinforcements are precisely oriented to optimize the stiffness-to-weight ratio. Axial fibers (0 degrees) provide excellent tensile, compressive and flexural properties while biaxial (85 degree) fibers contribute burst, crush and transverse strengths. Tubes also provide excellent electrical insulation for construction applications.

Our continuous filament winding process capabilities can help you:

  • Produce tubing with alternating longitudinal (axial) and circumferential (biaxial) structural fibers using a continuous process to wind a mandrel through multiple winding stations
  • Provide flexural and tensile strength with the axial reinforcement, and crush and burst resistance, with the biaxial reinforcement
  • Manufacture continuously, at a much higher rate than standard filament winding
  • Formulate a resin matrix and fiber loading to meet the desired properties
  • Manufacture standard size tubing or customized tubing to the desired diameter and length

Thin wall tubes can be manufactured with diameters ranging from 0.20”—1.125”. The fabrication process allows for a unique axial and biaxial fiber orientation, as well as consistent and tapered cross-sections. PolyOne engineers work with customers to develop a specific resin matrix and fiber loading to meet the compressive, flexural, and tensile strengths required.

Example Profiles

Outer Diameter INner Diameter Wall THickness Resin Type
0.298 in. 0.250 in. 0.024 in. Epoxy
0.333 in. 0.266 in. 0.034 in. Epoxy
0.352 in. 0.296 in. 0.028 in. Epoxy
0.375 in. 0.254 in. 0.061 in. Epoxy
0.414 in. 0.337 in. 0.039 in. Epoxy
0.505 in. 0.417 in. 0.044 in. Epoxy
0.524 in. 0.417 in. 0.054 in. Epoxy
0.602 in. 0.500 in. 0.051 in. Epoxy
0.745 in. 0.670 in. 0.038 in. Epoxy
0.840 in. 0.670 in. 0.085 in. Epoxy
1.065 in. 0.872 in. 0.097 in. Epoxy
1.170 in. 1.070 in. 0.050 in. Epoxy

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