Specific Applications
1. Producing wide-format HDPE/LLDPE packaging film for high-volume retail and industrial supply
2. Manufacturing multi-layer film where resin blending across layers reduces material cost
3. Running continuous production for converters supplying downstream bag-making operations
4. Supplying wide-width film rolls (up to 2500mm) for large-format packaging and wrapping needs

Core Functions

The upper rotary die head is the defining mechanical feature of this 2500 Type Three-Layer Upper Rotary Film Blowing Machine — the rotating component sits above the extrusion point, which is the structural difference from downward-rotary machines and affects how the equipment integrates into a plant's existing maintenance access and layout.

Three extruders with a combined screw configuration (Φ75/Φ85/Φ75) feed the ABC three-layer die head, with main motor power at 37kw, 55kw, and 37kw across the three units, using Siemens Bede motors for consistent drive performance.

Output capacity reaches up to 260kg/hr, with film width up to 2500mm — both higher than the smaller-format machines in the same product series, making this model suited to buyers who need more volume per production run.

A double-lip wind ring (1200mm diameter) with labyrinth entrance manages cooling airflow, while the winding system runs fully automatic reel changes under computer control, keeping production moving without manual stops between rolls.

Film thickness is adjustable from 0.01mm to 0.10mm, giving one machine the range to cover lighter packaging film through to heavier industrial-grade applications.

Procurement Motivations

Launching in-house film production under a private label — packaging companies that currently outsource film extrusion use a line like this to bring production in-house, gaining direct control over resin blend and film width specifications.

Scaling wholesale film supply — converters supplying multiple downstream bag-making or laminating customers benefit from the higher output ceiling on this machine, since 260kg/hr supports sustained volume commitments that smaller extrusion lines can't match.

Managing raw material cost through layer blending — a three-layer structure allows a lower-cost resin in the middle layer while keeping stronger material on the outer layers, which lowers the average material cost per kilogram without giving up film performance.

Solutions for Challenges

Converters running narrower extrusion lines often hit a ceiling on order volume they can fulfill without adding a second machine. The wider 2500mm film width and 260kg/hr output on this 2500 Type Three-Layer Upper Rotary Film Blowing Machine gives buyers more headroom before that becomes a problem.

Facilities already standardized on upper-rotary die head equipment face compatibility and training issues when introducing a downward-rotary machine into the same plant. This model avoids that mismatch by keeping the same rotary configuration buyers may already be maintaining elsewhere on their floor.

Balancing film strength against material cost is a recurring challenge for converters buying single-layer resin. The three-layer ABC structure on this machine addresses that directly, letting buyers combine resin types in one film rather than compromising on either cost or performance.