Common Applications
1. Producing standard HDPE bag film for small-to-mid volume packaging needs
2. Manufacturing HDPE+LLDPE blend film for buyers testing resin combinations before scaling up
3. Supplying film for converters running smaller, more frequent production batches rather than continuous long runs
4. Fitting into facilities with limited floor space or power capacity compared to wide-format extrusion lines
5. Serving as a starting point for buyers moving from outsourced film purchasing to in-house production

Working Process

The extrusion side runs on a single φ50 screw, built from combined metal with a 38CrMoAlA barrel, driven at speeds up to 100r/min — a straightforward single-screw setup rather than the multi-extruder configurations found on co-extrusion machines.

Winding uses a double-break system paired with an envelope knife, three middle cut knives, and two side cut knives, which together manage roll changes and edge trimming without needing a more elaborate multi-station winder. A stainless steel heating ring handles barrel temperature, working alongside a stainless steel die head heater to keep the extrusion process stable.

Traction runs off a length-adjustable shaft (700mm), and the winding motor is rated at 1.5kw, with maximum winding diameter reaching 500mm — dimensions that reflect this machine's role as a compact, single-operator-friendly setup rather than an industrial-scale line.

Film thickness on the Model 900 Low Pressure Blown Film Machine ranges from 0.01mm to 0.25mm, giving buyers reasonable flexibility across lighter and slightly heavier bag film without needing to switch equipment.

Problems This Machine Solves

Buyers new to film production often can't justify the cost or footprint of a large extrusion line before they've proven out demand for their own film product. The Model 900 Low Pressure Blown Film Machine gives them a way to start producing real film at a manageable scale first.

Smaller converters running frequent, shorter production batches don't benefit from equipment built for continuous, high-volume runs — that kind of machine sits underused between batches. This model's smaller output range and simpler winding setup match how smaller operations actually work day to day.

Voltage runs on standard AC 380V three-phase power, film width reaches up to 600mm for HDPE, and the combined output range of 25-40kg/hr rounds out the core specifications buyers typically check first when comparing entry-level extrusion equipment.

FAQ

Q1: How does "low pressure" affect the finished film compared to other machines?
It refers to the die head and cooling setup, which suits standard HDPE and HDPE+LLDPE bag film rather than more demanding film types that need higher-pressure processing.

Q2: How does winding and edge trimming work on this Model 900 Low Pressure Blown Film Machine?
Through a double-break winding system with an envelope knife, three middle cut knives, and two side cut knives.

Q3: How does this model compare to larger machines in the same product line?
It offers a lower output range and narrower film width, making it a lower-cost entry point rather than a high-volume production line.