Related Documents. 1  A/68/878âS/2014/339 14 May 2014. Report of the Secretary-General on children and armed conflict. 2  A/67/845-S/2013/245 15 May 2013. Report of the Secretary-General. 3  S/AC.51/2011/3 03 May 2011. Conclusions on children and armed conflict in Afghanistan. 4  S/2011/55 11 Feb 2011.
Hot-wire foam cutter. simple styrofoam cutter. A hot-wire foam cutter is a tool used to cut polystyrene foam and similar materials. The device consists of a thin, taut metal wire, often made of nichrome or stainless steel, or a thicker wire preformed into a desired shape, which is heated via electrical resistance to approximately 200Â°C.
Styrofoam Â® is a Dow Chemical Co. trademarked form of polystyrene foam insulation, introduced in the U.S. in 1954. StyrofoamÂ® is a trademarked name, the real name of the product is foamed polystyrene. Ray McIntire invented Styrofoam for the Dow Chemical Co.. McIntire said his invention of foamed polystyrene was accidental. His invention came as he was trying to find a flexible electrical insulator around the time of World War II. Polystyrene, which already had been invented, was a good insulator but too brittle. McIntire tried to make a new rubber-like polymer by combining styrene with isobutylene, a volatile liquid, under pressure. The result was a foam polystyrene with bubble, 30 times lighter than regular polystyrene.