Sand wasing i yusim sampela alkaline na oksidaising oksiliari long wokim ol klos i gat wanpela kain samting i wok long pinis na olpela filings bihain long em i wasim. Sapos em i gat ston grinding, pes bilong laplap bai gat wanpela sof frosty waitpela fluff, na bihain putim sampela softener. Em inap mekim ol i wasim laplap i kamap malumalum na malumalum, olsem na em i skruim laip bilong ol klos bilong laplap i kamap malumalum i malumalum na i malumalum.
Man bilong wasim wesan
a) Ekstruding ejen: Folem kaen fiber, strakja mo taet blong kaliko, ekspansen ejen mo konsentresen, ol kondisen blong ekspansen olsem tempereja mo taem oli jusum. Taem koten klos i sand, i save ekspandem tru long yusum wan alkaline ekspansen ejen olsem soda ash. .
b) Sand washing agent: After the clothes are puffed, the fibers are loose, and then the special sand washing is used to rub, so that the loose surface fibers produce full and soft hair. To make the suede full, it is necessary to use different shapes and different hardnesses. Sand powder, such as diamond sand (to make loose fibers to produce fluff), polygonal sand (to make the velvet stand), round sand (long mekim flaf i pulap).
c) Softener: Softener bilong wasim wesan bilong wasim wesan. Em i mas i gat wok bilong mekim wanpela soft bending samting, olsem na laplap i ken i go antap na i gat gutpela samting bilong drap i kamap gutpela moa. Olsem na, softener i gat longpela kabon sen na em i ken kisim gutpela samting long en long laplap bilong winim hevi bilong en i go antap.} .