Project no. 308
J. F. Blekastad1, T. Bogevik1, A. Engebakken2, and C. Wilhelmsen2
1NTNU’s School of Entrepreneurship, NTNU, Norway
2Mechanical Engineering, NTNU, Norway
Large amounts of paper towels are spent in public and commercial restrooms every year.
Waste bins must be emptied up to two times a day, including inspection. This implies
considerably large amounts of plastic bags consumed. There are large costs associated with
cleaning management due to low operational efficiency. In addition, many restrooms
experience waste overflow. Summarized, these factors cause a; practical, economic,
hygienic and environmental problem.
COMPAX will enhance the cleaning experience in restrooms by introducing smart waste
compactors, fitting up to 10 times more paper towels in a single plastic bag using vacuum
technology (Figure 1) The waste compactor will make restroom waste management more
efficient, cost-saving and more environmentally friendly. By significantly reducing the volume
of paper towel waste, while at the same time collecting valuable information from a smart
system, COMPAX’s product will improve both the utilization of volume in the plastic bags
and the working experience for the cleaning staff.
The core team has performed initial tests of the underlying technology that constitutes the
waste compactor to get a proof of concept (POC). The tests are positive and shows great
potential. Furthermore, the core team has initiated activities related to building a prototype
which will be tested together with NTNU during June and July 2018. Results and feedback
from these tests will taking into consideration when developing the final design, and smallscale
production is expected to start in mid-2019.
Figure 1: Waste compactor before, under, and after compression process