Milan, Italy -- Italian polyurethane machinery specialist Cannon says its new JL (Jet-Less) high-pressure L-shaped mixheads have now been industrially tested with rigid and flexible foam for more than a year and with frequent shots (up to 60 000 per month).
According to Cannon -- which is the biggest supplier of PU equipment globally - "several European manufacturers of insulating panels, domestic refrigerators, cold stores and refrigerated displays are currently using it with full satisfaction."
Cannon says the JL provides "significant advantages to the foaming process," and its first year of industrial use has "confirmed - and sometimes even exceeded - the promised expectations."
This mixing system -- the result of constant and continuous efforts in research, development and testing -- is not simply an evolution of existing models, claims Cannon: "it introduces true and innovative technological concepts."
Its main technical feature is the elimination of the injectors: mixing is performed by the combination of two co-axial chambers: in the first one the chemical components are just metered, and in the second one mixing takes place.
Manufacturers of domestic refrigerators, insulation panels, refrigerated trucks and cold stores "obtained significant advantages in terms of reduced consumption of chemicals, better foam quality, more regular distribution of densities within their products," with this new device, according to the manufacturer.
Cannon says it will continue developing this innovation, and aims to assess using the mixhead with a wider range of blowing agents (specifically low-boiling hydrocarbons) and applications.
PIC: Cannon launched the JL mixhead at the UTECH North America 2007/CPI meeting in Florida with a paper by Maurizio Corti.