Ads
related to: black buttons 1 2 inch acrylic sheets free samples
Search results
Results from the WOW.Com Content Network
(Top left button shows crazing resulting from button having been heated during washing.) Chemical reaction of two proteins (top) with formaldehyde (H 2 CO) – schematic presentation. Comb made from Galalith resembling ivory. Galalith (Erinoid in the United Kingdom) is a synthetic plastic material manufactured by the interaction of casein and ...
Please see external links for images of buttons (front & back) made from the material(s) in question. ("NBS name" refers to labelling used by the National Button Society, USA.) ("NBS name" refers to labelling used by the National Button Society, USA.)
Celluloids are a class of materials produced by mixing nitrocellulose and camphor, often with added dyes and other agents.Once much more common for its use as photographic film before the advent of safer methods, celluloid's common present-day uses are for manufacturing table tennis balls, musical instruments, combs, office equipment, fountain pen bodies, and guitar picks.
Compression molding is a method of molding in which the molding material, generally preheated, is first placed in an open, heated mold cavity. The mold is closed with a top force or plug member, pressure is applied to force the material into contact with all mold areas, while heat and pressure are maintained until the molding material has cured; this process is known as compression molding ...
Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!
Catalin is a brand name for a thermosetting polymer developed and trademarked in 1927 by the American Catalin Corporation of New York City, when the patent on Bakelite expired that year. [1] A phenol formaldehyde resin , it can be worked with files, grinders, and cutters, and polished to a fine sheen.
Ads
related to: black buttons 1 2 inch acrylic sheets free samples