Update on Project No Drip. Jacqueline Greene Michelle Dufalla Tania Chan February 22, 2007. Initial Design Schematic. H2O container. cork. Clamp with attached rubber plug. Inside container. Container wall. Tap Design Considerations.
February 22, 2007
Clamp with attached rubber plug
Gravity Driven System
Water Swelling Grommets
½” - $0.52/foot
¼” - $0.76/foot
* 6 Gauge Brass Wire ~ $1 /foot
Self-Expanding - $78.26/ 1”x36”x24”
Pure Gum - $57.64/ 1”x36”x12”
Closed Cell Neoprene Blend- $183.90/ 1”x70”x 42”
PVC Pipe – 2 inches of ½” diameter ~ $0.09
-or- 2 inches of ¼” diameter ~$0.13
Closed Cell Neoprene Blend – 4 sq. in. ~ $0.25
-or- Pure Gum Rubber – 4 sq. in. ~ $0.54
-or- Expanding Cork – 4 sq. in. ~ $0.37
Clamp - 1 - $1.10
TOTAL ~ $1.44-1.77
Joint Service Pollution Prevention Opportunity handbook, US Navy
“Though there is no decisive research on the environmental impacts of recycling plastic, relating the economic cost of disposal to recycling shows that the cost to recycle plastic is $360 per ton while normal disposal cost is $250 per ton. “
1. Inspection Workers inspect the plastic trash for contaminants like rock and glass, and for plastics that the plant cannot recycle.
2. Chopping and Washing The plastic is washed and chopped into flakes.
3. Flotation Tank If mixed plastics are being recycled, they are sorted in a flotation tank, where some types of plastic sink and others float.
4. Drying The plastic flakes are dried in a tumble dryer.
5. Melting The dried flakes are fed into an extruder, where heat and pressure melt the plastic. Different types of plastics melt at different temperatures.
6. Filtering The molten plastic is forced through a fine screen to remove any contaminants that slipped through the washing process. The molten plastic is then formed into strands.
7. Pelletizing The strands are cooled in water, then chopped into uniform pellets. Manufacturing companies buy the plastic pellets from recyclers to make new products. Recycled plastics also can be made into flowerpots, lumber, and carpeting.