One Layer Twin Head Blown Film Machine

Bag Production. Double the Efficiency.
Monolayer Blown Film Machine

Normally when producing film rolls for T-shirt bag conversion which ranges from 300~700mm in width, it is difficult to achieve higher output by using a bigger extruder for such a small film width unless the blown film extruder is equipped with an internal bubble cooling. The twin-head blown film machine offers an economic alternative and has a much faster return on investment compared to a blown film machine installed with an internal bubble cooling system (IBC). In the twin-head blown film machines, 1 die head can reach much higher output with a bigger extruder (such as 65mm or 75mm in diameter) even when producing smaller width film. It is especially effective for T-shirt bag makers who are looking for a machine with higher output but lower cost. Compared to extruders with a single die head, the twin die extruders can achieve higher production capacity when producing film rolls that are small in width, as the high extrusion output is dispersed into two separate channels of the die heads instead of one.

POLYSTAR designs and customizes this type of twin-head blown film machine with different screw diameters and roller widths depending on the customers’ requirements. Available in screw diameters of 55mm, 60mm, 65mm, and 75mm and film width from 400mm up to 1000mm on each winder. The double-head blown film machine also allows producers to switch between HDPE and LDPE production as well as produce different film widths on the same machine on each winder simultaneously. A special screw design is used to provide good mixing and stable output for both HDPE and LDPE materials. Bimetallic treatment is applied to process a higher percentage of recycled material and CaCO3 compound. POLYSTAR uses Siemens/ABB energy-saving motors for the extruders which can reduce energy consumption by up to 5%. POLYSTAR has installed more than 200 sets of double-head blown film machines in Latin American in more than 15 countries throughout Central and South America.

Higher production for thin film and small-sized bags

Designed for HDPE and LDPE Bag Producers 

The twin-head blown film extruder is designed for bag producers to cover a wide range of products including shopping bags, fruit and vegetable bags, perforated bags, flat bags, bottom-sealed bags, bag-on-roll, die-cut (gift) bags, ice bags, kitchen bags, live seafood bags, T-shirt bags (both hot and cold cutting type), dog poop bags and many others.

Productive for All sizes.Flexible in production.

The unique design of the twin-head extruder allows producers to achieve higher production, especially for film ranging from 150 mm to 750 mm in width, which covers the most common bag sizes in the market. The machine is highly productive for both thin HDPE film (10 microns) and thick LDPE film (100 microns). 
The ability to produce different film widths and thicknesses on each winder at the same time also adds flexibility to the production.

Works with Different Materials. Recycled, Virgin, CaCO3, Biodegradable.

The screw design has been optimized to work with different types of materials to provide the maximum flexibility for bag producers. The screw gives very good mixing to recycled materials, color masterbatches, additives, calcium carbonate and fillers.