Vulcanized fibre is made by soaking the original sheets of
wood fibre or cotton in a zinc chloride solution. The sheets
are then rinsed in water to remove the zinc chloride solution,
and then dried and pressed into the finished product. The
original fibre is thus transformed into an industrial use
material which is chemically neutral and strong, while at
the same time delicate.
H fibre (UL-94HB)
uses original wood fibre sheets as its raw material. The available
colors are red, white, gray, and black. It is a commonplace
material which can be used widely for electrical appliances,
boxes, sporting equipment, and fibre crafts.