{"id":734,"date":"2013-12-22T00:21:32","date_gmt":"2013-12-21T23:21:32","guid":{"rendered":"http:\/\/www.proof.de\/?post_type=encyclopedia&p=734"},"modified":"2022-03-15T12:03:37","modified_gmt":"2022-03-15T11:03:37","slug":"optiskt-vitmedel","status":"publish","type":"encyclopedia","link":"https:\/\/www.proof.de\/sv\/lexikon\/optische-aufheller\/","title":{"rendered":"Optiska vitmedel"},"content":{"rendered":"
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\n Betygs\u00e4tt nu<\/span>\n <\/div>\n <\/div>\n

Optisk Uppv\u00e4rmningsmedel<\/a> \u00e4r tillsatser som anv\u00e4nds av papperstillverkare f\u00f6r att f\u00e5 ett papper att se vitare och ljusare ut.<\/p>\n

F\u00f6r att f\u00e5 ett papper att se vitare ut \u00e4r det viktigt att tills\u00e4tta \u00e4mnen i papperet som f\u00f6rskjuter det osynliga ultravioletta spektrumet<\/a> mellan 320 och 400 nanometer till det synliga omr\u00e5det \u00f6ver 400 nanometer. P\u00e5 s\u00e5 s\u00e4tt blir papperet bl\u00e5are eller fluorescerar i omr\u00e5den som bara \u00e4r synliga f\u00f6r det m\u00e4nskliga \u00f6gat. V\u00e5ra \u00f6gon uppfattar detta som en ljusare, bl\u00e5aktig vit f\u00e4rg, men en f\u00e4rgm\u00e4tare<\/a> ser bara en annan bl\u00e5 f\u00e4rg. f\u00e4rgm\u00e4tning<\/a> f\u00f6rvr\u00e4ngs d\u00e4rf\u00f6r n\u00e5got av optiska vitmedel, t.ex. kan profiler som skapas vara gulaktiga n\u00e4r m\u00e4tinstrumentet f\u00f6rs\u00f6ker korrigera den bl\u00e5aktiga f\u00e4rgen p\u00e5 papperet.<\/p>\n

M\u00e5nga \"vita\" papper inneh\u00e5ller optiska vitmedel. I vissa fall f\u00f6rsvagas den ljusare effekten under en relativt kort period p\u00e5 flera \u00e5r, s\u00e5 att papperets visdom avtar.<\/p>","protected":false},"excerpt":{"rendered":"

Optiska vitmedel \u00e4r tillsatser som anv\u00e4nds av papperstillverkare f\u00f6r att f\u00e5 ett papper att se vitare och ljusare ut. <\/p>","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","template":"","meta":{"inline_featured_image":false,"footnotes":""},"class_list":["post-734","encyclopedia","type-encyclopedia","status-publish","hentry","no-featured-image-padding"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\n\t\n\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t