How do you calculate pultrusion pull speed?

Divide the linear footage pulled by the running time in minutes. With 1,200 ft over 8 hours (480 minutes) the average pull speed is 2.5 ft/min, and at 90% uptime the line was pulling about 2.78 ft/min while actually running - squarely in the typical pultrusion range.

What is a good pull speed for pultrusion?

It depends on the resin system and wall thickness. Polyester and vinyl ester profiles commonly run 1 to 5 ft/min for solid sections, while thin fiberglass rod can exceed 10 ft/min. Epoxy and thick structural shapes run slower because the exotherm and cure need more dwell in the die.

Why is the while-pulling speed higher than the average?

The average spreads the footage across every running minute, including die stops, resin bath top-offs, and cure holds. While actually pulling, the line must run faster to produce the same footage - here about 2.78 ft/min against the 2.5 ft/min average at 90% uptime.

What limits how fast you can pull a pultruded profile?

Cure kinetics in the die are the ceiling. Pull faster than the resin can gel and cross-link and the part exits soft or blisters. Die temperature zones, resin catalyst level, and part cross-section all set the maximum safe speed.

Should I quote customers using raw or effective pull speed?

Quote from the average speed. It already contains the stops and holds every real run experiences, so a quote built on the 2.5 ft/min average survives contact with the shop floor, where one built on the higher while-pulling pace does not.

How does efficiency affect daily output?

Linearly. A line pulling 2.78 ft/min while running makes 1,333 ft over a perfect 8-hour shift, but at 90% uptime it nets about 1,200 ft. On this line every point of uptime is worth roughly 13 ft of profile per shift.

Pultrusion & Continuous Composite Profiles calculator

Pull Speed Calculator

Pull speed is the linear rate at which a pultrusion machine draws impregnated reinforcement through the heated forming die, and it governs everything downstream: cure state, surface finish, and output. Process engineers and line operators tune it against resin gel time and die temperature so the profile exits fully cured but not scorched. This calculator converts a shift's completed footage and running hours into the average pull speed in true feet per minute, and also shows the slightly higher speed the line held while actually pulling, once gel and cure holds are stripped out. That average number is what belongs in a capacity model or a customer quote.

What this calculator does

Pull speed is the linear rate at which a pultrusion machine draws impregnated reinforcement through the heated forming die, and it governs everything downstream: cure state, surface finish, and output.
Use it when pull speed in pultrusion and continuous composite profiles is being committed and you need a throughput number you can defend.
It converts the footage pulled in a shift and the machine's running hours into the average pull speed in ft/min, and divides by uptime to show the pace held while actually pulling.

Formula used

Average pull speed = footage pulled ÷ (running hours × 60)
Speed while pulling = average speed ÷ (uptime ÷ 100)

Inputs explained

Linear feet of profile pulled per shift:
Machine running hours in the shift:
Line efficiency (uptime after gel/cure holds):

How to use the result

Use it when validating a new profile's line rate, sizing a production order against available shift hours, or comparing planned versus actual output on a running die.
It reports an average rate over the shift and cannot capture in-cycle slowdowns for resin change, die cleaning, or off-spec sections that were pulled but scrapped.

Current U.S. benchmarks

The producer price index for plastic resins and materials stands at 292.875 (BLS, Jul 2026), up 10.7% from a year earlier. Quotes priced off last quarter's material cost miss this move.

Common questions

How do you calculate pultrusion pull speed? Divide the linear footage pulled by the running time in minutes. With 1,200 ft over 8 hours (480 minutes) the average pull speed is 2.5 ft/min, and at 90% uptime the line was pulling about 2.78 ft/min while actually running - squarely in the typical pultrusion range.
What is a good pull speed for pultrusion? It depends on the resin system and wall thickness. Polyester and vinyl ester profiles commonly run 1 to 5 ft/min for solid sections, while thin fiberglass rod can exceed 10 ft/min. Epoxy and thick structural shapes run slower because the exotherm and cure need more dwell in the die.
Why is the while-pulling speed higher than the average? The average spreads the footage across every running minute, including die stops, resin bath top-offs, and cure holds. While actually pulling, the line must run faster to produce the same footage - here about 2.78 ft/min against the 2.5 ft/min average at 90% uptime.
What limits how fast you can pull a pultruded profile? Cure kinetics in the die are the ceiling. Pull faster than the resin can gel and cross-link and the part exits soft or blisters. Die temperature zones, resin catalyst level, and part cross-section all set the maximum safe speed.
Should I quote customers using raw or effective pull speed? Quote from the average speed. It already contains the stops and holds every real run experiences, so a quote built on the 2.5 ft/min average survives contact with the shop floor, where one built on the higher while-pulling pace does not.

Last reviewed 2026-08-11.