Dual Pressure Blown Film Die Head

Low pressure die head blow moulding machine head Blowing film machine, head can be customised outside diameter 200MM

Specific Applications

Where Dual Pressure Blown Film Die Head tends to get used, in order of how often it comes up:

1. Plants running more than one output setting — some blown film lines don't operate at a fixed pressure all the time; this die head is built to handle that variability without needing a swap
2. Courier bag and mailer film production — a common end use across this die head category, where film strength and consistency matter for shipping durability
3. Aquatic bag manufacturing — used for bags that pack and transport seafood or aquatic products
4. Rubbish bag and trash liner film — supports the film gauge and strength needed for waste bags
5. Recycled resin blending — recycled material can go into production without a separate die head, which matters for plants running a mix of virgin and recycled feedstock
6. Lines matching a specific extruder unit — since diameter starts at 200mm and scales up to 1000mm, it fits a wide span of extruder and die head combinations

Core Functions
1. Works across both pressure ranges — runs properly whether the line is set to higher or lower operating pressure, without needing a different die head for each
2. Stable, even extrusion — keeps material flow consistent, avoiding the flow-line marks and streaking that come from uneven internal pressure
3. Strong finished film — supported by the forging, turning, polishing, and chrome-plating steps that go into building the runner section
4. No-seam construction — a continuous internal structure that helps keep production steady over long runs
5. Compatible with three polyethylene types in one setup — HDPE, LDPE, and LLDPE, plus the ability to change the mixing ratio between them, without switching the die head

Purchasing Motivation

Most plants sourcing a die head already know their extruder's pressure range and buy accordingly. But not every line runs at one fixed setting — some plants deliberately shift between higher and lower pressure depending on the film gauge, the resin mix, or the specific order they're filling that week. That's the gap this Dual Pressure Blown Film Die Head is built for: instead of stocking a high-pressure die head for one type of run and a separate low-pressure one for another, a plant can standardize on this single unit and adjust operating pressure as needed.

There's also a practical sourcing angle. Since the outside diameter is customizable starting at 200mm and the full range runs to 1000mm, buyers aren't limited to a narrow set of fixed sizes — the Dual Pressure Blown Film Die Head can be matched fairly closely to an existing extruder without forcing a bigger equipment change. And because it already supports HDPE, LDPE, and LLDPE with the option to blend them, plants that switch resin types between orders don't need to plan around a die head swap every time the material changes. It comes with a one-year warranty.