LAYERS
9, 11, 13, 15 17 Du Pont began producing super-strong "Mylar" in 1954. It takes a force of 25,000 lbs. per square inch to pull apart a sheet of "Mylar" only one one-thousandth of an inch thick. It is used as the base material in videotape, for packaging such items as poultry and frozen "boil-in-the-bag" foods, and as electric motor insulation. In the space suit, five layers of aluminum-coated "Mylar" help to block off radiant heat from the sun, and hold body heat in to protect against the cold of space. Taken from a 1970s DuPont poster. |
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