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Quick answer:
Stretch film machine output is calculated by multiplying the extruder's hourly extrusion capacity (in kg/h) by daily operating hours, then subtracting waste and changeover losses. A typical industrial line produces 8 to 18 tons per day, depending on extruder size, film thickness, and line speed.
If you're planning to invest in a stretch film machine, one question matters more than almost any other: how much film can it actually produce in a day? Output directly shapes your revenue, your delivery timelines, and your return on investment. Yet many buyers struggle to translate technical specs—like extrusion capacity and line speed—into a real-world daily tonnage figure.
This guide breaks down the math in plain terms. You'll learn the formula for stretch film machine output, the factors that raise or lower your daily production capacity, and how to estimate how many tons per day a stretch film machine can deliver. Whether you're comparing a 1000mm line to a 2000mm jumbo roll system, these calculations will help you choose the right equipment for your demand.
Table of Contents
Stretch film machine output depends on four main variables: extruder capacity, line speed, film thickness, and daily run time. Each plays a distinct role.
Extrusion capacity (kg/h): This is the maximum weight of molten plastic the extruder can process per hour. It's the single biggest driver of output. Larger screw diameters and multi-extruder configurations push this number higher.
Line speed (m/min): How fast the film travels through the winder. Higher speeds mean more film produced per minute—but only if the extruder can keep up.
Film thickness (microns): Thinner film uses less material per square meter, so a machine running 8-micron film covers far more area than one running 35-micron silage film at the same weight.
Daily operating hours: Most calculations assume 20 to 24 hours of continuous running, since stretch film lines are built for round-the-clock operation.
For reference, XHD Machinery's Fully Automatic Cast PP Film Extruder lists a maximum extrusion capacity of 600 kg/h, while their automatic winding stretch film line reaches a maximum output of up to 18 tons per day.
The core formula for stretch film machine output is straightforward:
Daily output (tons) = Extrusion capacity (kg/h) × Operating hours ÷ 1,000 × Efficiency rate
Let's walk through a real example. Say your extruder runs at 500 kg/h and operates 22 hours a day, with a 95% efficiency rate to account for startup, changeovers, and minor waste.
500 kg/h × 22 hours = 11,000 kg
11,000 kg × 0.95 = 10,450 kg
10,450 kg ÷ 1,000 = 10.45 tons per day
That efficiency rate matters. No line runs at 100% because every shift includes roll changes, core loading, and quality checks. A well-automated machine—one with automatic paper core loading and unloading, for example—keeps efficiency closer to 95% by reducing manual stops.
A stretch film machine produces between 8 and 18 tons per day in most commercial setups, though the exact figure scales with machine width and configuration. Here's how XHD Machinery's range maps to daily output:
1000mm lines (e.g., XHD-55/75-1250): Suited for small to medium operations, these compact machines handle hand-use rolls and machine-use rolls efficiently for steady daily volumes.
1500mm lines (e.g., XHD-65/90/65-1850): A popular mid-range choice, with the automatic four-shaft center winding line reaching up to 18 tons per day.
2000mm jumbo roll lines (e.g., XHD-80/120/80-2400): Built for high-volume producers, these systems run three- or five-layer co-extrusion and produce jumbo rolls up to 60 kg at 500mm film width.
Real-world data backs this up. XHD's customer VVR Poly in Vapi, India, runs four stretch film machines with a combined daily capacity of 35 tons—roughly 8 to 9 tons per machine.
Film thickness affects how you should read output figures, because tonnage and coverage area are two different things. Two machines can produce identical tonnage while delivering very different amounts of usable film.
Thinner film stretches your raw material further. An 8-micron film yields far more square meters per kilogram than a 35-micron silage film. So if your market wants thin hand-wrap rolls, your machine's tonnage translates into a much larger surface area—and more sellable rolls. When comparing machines, always check both the maximum kg/h and the thickness range the line can handle reliably.
Choose your machine based on target daily tonnage and product mix, not just headline specs.
Choose a 1000mm line if you're a newer producer or serve a regional market with moderate demand. Lower upfront cost matters more than maximum throughput here.
Choose a 1500mm line if you want the best balance of output and investment. These mid-range machines suit growing manufacturers aiming for 10 to 18 tons per day.
Choose a 2000mm jumbo roll line if you supply large distributors or export markets and need maximum tonnage with jumbo roll capability.
If your demand fluctuates between packaging film and agricultural silage film, a dual-function line lets you produce both on a single system—a smarter use of capital than two separate machines.stretch film production capacity
Calculating stretch film machine output isn't just academic—it's the foundation of a sound investment decision. Start with your target daily tonnage, work backward through the formula, and factor in a realistic efficiency rate. Then match that number to a machine width and configuration that fits both your demand today and your growth tomorrow.
With over 19 years of manufacturing experience and 8,000+ machines shipped to 100+ countries, XHD Machinery can help you model the right output for your operation. To get a tailored capacity estimate for your production goals, reach out to the XHD team and request a quote.
A 1500mm stretch film machine, such as XHD's automatic four-shaft center winding line, produces up to 18 tons per day at maximum output. Actual figures depend on film thickness, line speed, and operating hours.
Most well-automated stretch film lines run at 90% to 95% efficiency. The remaining time covers roll changes, core loading, startup, and quality checks. Machines with automatic core loading and unloading sit at the higher end of this range.
Film thickness does not change the machine's kg/h output, but it changes how much surface area that tonnage covers. Thinner film (e.g., 8 microns) yields more square meters per kilogram than thicker silage film (e.g., 35 microns).
Extrusion capacity is the hourly weight (kg/h) the extruder can process. Daily output is that figure multiplied by operating hours and an efficiency rate, then converted to tons. Extrusion capacity is the starting point for any daily output calculation.
For co-extrusion lines, add the combined extrusion capacity of all extruders to find total kg/h, then apply the same daily output formula. Five-layer lines on 2000mm machines reach the highest tonnage in this way.