Components of apparatus for film making and method for manufacturing the same
AssigneeNihon Sinku Gijutsu Kabusiki Kaisha
InventorsNobuyuki Saso, Tsutomu Hasegawa, Kano Kosaki, Hidenori Suwa
Life of this patent
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Abstract
Components of apparatus for film making and method for manufacturing the same include components made from aluminum alloy or aluminum without or with uneven surface of unevenness size of up to several mm, which are immersed in any one of sulfuric acid, phosphoric acid, oxalic acid, and chromic acid, and then washed and dried. Such components prevent the deposit of film forming materials on the components form peeling off during film making operation.
Claims8
A method for manufacturing components of apparatus for film making comprising the steps of (A) forming an uneven surface having grooves of a size of up to several mm on base metal made from aluminum alloy or aluminum;
- and, (B) immersing said base metal in any one of sulfuric acid, phosphoric acid, oxalic acid, and chromic acid to treat the surface of said base metal, and then washing and drying thereby producing a surface such that the deposits on the surface made during the film making do not peel during film making.
Dependencies are inferred from the claim text.