What are zip-top bags made of?
Zip-top bags take polyethylene directly. Trace them back and you pass 4 made things on the way to 3 raw materials.
How zip-top bags are made See it on the map
What goes straight in
From the ground: 3 raw materials
- Natural gas through polyethylene, ethylene
- Water through polyethylene, ethylene
- Crude oil through polyethylene, ethylene, naphtha
Made along the way: 3 things
Chemicals and fuels 3
What it is packed in
On the line, but left out of everything above, because it holds the finished thing rather than goes into it.