Krimelte received lot of interesting and innovative ideas from our last challenge, which is the reason why they have decided to do it again. This time they need you to design a foam heater that matches their standard aerosol gun. Good luck everybody!
The content of OCF (One Component Foam) aerosol can consists of a mixture of polyurethane prepolymer and liquefied gases. As it escapes the aerosol can, the prepolymer reacts with air moisture and instantly appears as a foam.
The foaming process can be problematic at the cold temperatures as gases lack the power to expand and the chemical reaction become slower. This is the reason why aerosol cans work better in warmer environments, but this is not always possible.
Thus, Krimelte needs your help in developing an innovative heater that can be mounted on their OCF gun nozzle that helps to heat up the foam that already is out from aerosol can.
Heater could be either on the gun or between the aerosol can and gun
Uses 220V AC as energy source
Material heat capacity approx 1700 J/(kg•K)
Heater needs to be constructed from standard electrical parts available on the market with a reference to the supplier or manufacturer on the model description
Must heat up the mixture from 0°C to 20°C and should not overheat
Normal foaming speeds 200-400 g/min
Must be safe for the user
Easy access to cleaning with chemicals (e.g. acetone)
Winning design will be chosen based on the design and functionality
The competition is open to everyone
Team entries are welcome
You can submit several designs
Only models uploaded to GrabCAD library will participate in the competition
Tag your model with “foamheater”
Privately uploaded models need to be made public after the competition deadline
Models can be done in any CAD software as long as STEP or IGES files are uploaded
Competition winner will be announced during 4 weeks after the end of competition but still asap
Cash prizes of $2100
The winner will be selected by a joint jury of Krimelte and GrabCAD and announced on the GrabCAD blog.
Krimelte OÜ is a production company, based on Estonian capital, that is specialized in joint sealants and insulating foams. The company was founded in 1994 and the production in Estonia started in 1998.
Krimelte OÜ had made a quick progress from a retailer to one of the leading European producers. By today, our market involves over 40 countries from the EU up to Japan.