Brampton Engineering ships 11-layer blown film line

Brampton, Ont.-based equipment manufacturer Brampton Engineering has announced that it has shipped the “world’s first” 11-layer blown film line from its plant.

The company noted that it presented a paper outlining the advantages of an 11-layer line in 1995, providing the theoretical justification for the possibility that the market would request an 11-layer blown film line.

The company’s SCD multilayer streamlined coextrusion die became the world’s first successful commercial 7-layer die, and paved the way for 8, 9, 10 and 11 layer blown film lines. Brampton Engineering noted that it has shipped 77 7-11 layer SCD systems, more than any other manufacturer in the world.

BE’s engineering group knew that arranging 11 extruders radially around the SCD die would require longer adaptors and result in a very crowded hot section. To accommodate the 11 extruders on the 11-layer SCD die 9, the company designed piggybacked extruders — two extruders with one mounted on top of another. The configuration of the 11-layer line became two piggybacked extruders with seven normal extruders, creating a radial extruder configuration similar to a 9-layer line but with two extruders as doubles.

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