Specific Applications
1. Producing standard PE film for general packaging and industrial wrap
2. Manufacturing two narrower film rolls simultaneously instead of one wide roll requiring a slitting step
3. Supplying converters who need matched, simultaneous roll pairs for downstream bag-making lines
4. Running production for buyers scaling from single-line output without adding a second full extruder

Core Functions

The single-screw extrusion system runs on a φ65 screw with a 30:1 length-to-diameter ratio, driven by an 18.5kw frequency-controlled motor — that one extrusion stage is what feeds both film heads downstream.

Two independent haul-off and winding sections handle the split output separately. Each side uses backrest-type friction winding with its own 250mm rewinding roller and a 1100mm roll length, so the two lines run without interfering with each other during production.

The die head uses an internal spiral, center-feed rotating structure, with a 50mm mold caliber on each head — the rotating design helps even out film thickness as it's blown, a detail that matters directly for consistent roll quality across both outputs.

Cooling runs through dedicated blowers (1.5kw per head) with intelligent double-digital-display temperature control, keeping each film line's cooling independent of the other.

Traction speed on the haul-off section runs 0-80m/min, adjustable through a frequency converter, giving the Double Head High Speed Blown Film Machine flexibility to match line speed to the film thickness or resin being processed.

OEM/ODM Support

Wenzhou Chaoshun Machinery can adjust configuration on the Double Head High Speed Blown Film Machine, including film width per head, winding roller length, and traction speed range, based on a buyer's specific output targets. 

This is useful for buyers who need the two output lines matched to a particular downstream bag-making width or roll specification before the machine is built.

Solving Common Buyer Pain Points

Buyers needing two rolls of film per run often end up either running two separate machines or slitting one wide roll into two — both approaches add cost or an extra processing step. This machine solves that directly by producing two independent rolls from a single extrusion stage, without a slitting step afterward.

Investing in a full second extruder just to double output isn't always practical for mid-scale converters. The Double Head High Speed Blown Film Machine addresses that by keeping extrusion centralized on one screw while duplicating only the downstream haul-off and winding hardware.

Matching roll specifications across two separate machines can introduce inconsistency between batches. Because both film lines here share the same extrusion source, the two rolls produced in one run start from identical resin conditions, reducing that batch-to-batch mismatch risk.