Categories Starting with 'F' (Page #3)

Fume hoods are laboratory workspaces employed to absorb and eliminate air of objectionable organic vapors, which can be irritating or hazardous to workforce exposed to them. The hood can be either a ducted or re-circulating type. The principle involved in either type, however, is similar - air is drawn in via a fan, and is either ejected from the workplace, or is purified by filtration and re-fed into the room. Though made of timber earlier, the modern hoods are made of epoxy-coated mild steel. These hoods are available in customized sizes to suit different laboratories and workstations.

A foil is a slender metal sheet, conventionally fabricated by hammering, or winding, a piece of metal into a roll. Malleable metals such as gold, copper, aluminum and tin, which exhibit the tendency to bend under their own body weight, are most commonly used for foil fabrication. The higher the metal malleability, the higher is the thinness of the foil. Generally referred to as metal leaf, they are marketed in myriad shades with some leaves resembling a gold leaf, though in actuality, they do not constitute the expensive metal. They are immensely applicable as decorative and confectionary wrappers.

Film adhesives include synthetic resin, epoxies, phenolics, isocyanate and polyurethane, in easy to handle film form often on fabric or metal foil. Films are designed to cure at varying temperatures with degrees of permanent adhesion based upon application. Flexible applications range from adhesives for surface finishing, high temperature, circuit boards and rapid bonding for mass production.

Abrasive flaps are bonded and centered on a wheel. The spinning flaps constantly expose new abrasive making the flap disc very durable and effective. This design allows great flexibility with various abrasives employed depending on the type of application. Flap discs are used extensively in deburring and finishing applications.