JAMES KING-HOLMES / SCIENCE PHOTO LIBRARY JAMES KING-HOLMES / SCIENCE PHOTO LIBRARY
Polythene tubing manufacture. The machine at right blows air into molten plastic to form a polythene tube. When cool, the plastic is rolled into sheets by the machine at left. This is building grade polythene made from recycled plastic. It is coloured yellow to indicate that it is impermeable to carbon dioxide.
Model release available. Property release not required.