Ugu horreyntii, waa inaad ogaataa sifooyinka waraaqaha dahaarka leh, ka dibna waxaad sii baran kartaa xirfadaheeda.
Tilmaamaha warqadda dahaarka leh:
Sifooyinka waraaqaha la daboolay ayaa ah in dusha sare ee warqaddu ay tahay mid aad u siman oo siman, oo leh jilicsanaan sare iyo dhalaal wanaagsan. Sababtoo ah cadaanka dahaarka ee la isticmaalo ayaa ka badan 90%, iyo qaybo aad u fiican, oo waxaa lagu dhejiyaa caleenta super, jilicsanaanta warqadda daboolan guud ahaan waa 600-1000s. Isla mar ahaantaana, rinjiga ayaa si siman loogu qaybiyaa warqadda wuxuuna u muuqdaa mid cad oo faraxsan. Shuruudaha waraaqaha la daboolay ayaa ah in dahaarka uu yahay mid dhuuban oo isku mid ah, iyada oo aan xumbo lahayn, iyo qadarka xabagta ee daboolka ayaa ku habboon si looga hortago in warqaddu ka soo baxdo budada iyo qulqulka inta lagu jiro habka daabacaadda. Intaa waxaa dheer, warqadda dahaarka leh waa inay lahaataa nuugista ku habboon ee xylene.Sanduuqa cuntada
Codsiga warqadda dahaaran:
Waraaqaha dahaarka leh waa mid ka mid ah waraaqaha ugu muhiimsan ee loo isticmaalo warshadaha daabacaadda. Warqadda dahaarka leh waxaa caadi ahaan loo yaqaan warqad daabacan oo dahaaran. Waxaa si weyn loo isticmaalaa nolosha dhabta ah. Tusaale ahaan, sanduuqyada baakadaha cuntada, jadwalka quruxda badan, buugaagta daboolka, sawirada, albums sawirada, daabacaadda alaabta gacanta ee qalabka elektarooniga ah ee warshadaha, ku dhawaad dhammaan waxay isticmaalaan warqad dahaarka ah, baakadaha si fiican loo qurxiyey, boorsooyinka waraaqaha, calaamadaha, calaamadaha ganacsiga, iwm. sidoo kale loo isticmaalo tiro badan. Waraaqaha dahaarka ah ee sida caadiga ah loo isticmaalo waxaa loo qaybiyaa tilmaamo dhumuc kala duwan laga bilaabo 70 garaam halkii mitir labajibbaaran ilaa 350 garaam mitirkii laba jibbaaran. sanduuqa Sushi
Kala soocida warqadda dahaaran:
Warqadaha dahaarka leh waxaa loo qaybin karaa warqad hal dhinac ah, warqad labajibbaaran, warqad matte ah iyo warqad maro ah. Marka loo eego tayada waxa loo qaybiyaa A, B, C saddex darajo. Alaabta ceeriin ee ugu weyn ee warqadda dahaadhka ah waa warqad salka dahaarka leh iyo rinjiga. Shuruudaha loogu talagalay warqadda saldhigga ah waa dhumuc isku mid ah, dabacsanaan yar, xoog sare iyo caabbinta biyaha wanaagsan. Waa inaysan jirin dhibco, laalaab, godadka iyo cilladaha kale ee warqadaha ee dusha sare ee warqadda. Dahaarka loo isticmaalo dahaadhka wuxuu ka kooban yahay midabyo cadcad oo tayo sare leh (sida kaolin, barium sulfate, iwm.), xabagyada (sida alkolada polyvinyl, casein, iwm.) iyo wax lagu daro. ee
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Halabuurka warqadda dahaaran:
Warqadda dahaarka leh waxay leedahay warqad siman iyo warqad duuban. Waraaqda saldhigeedu daboolan waxaa laga sameeyaa saxarka alwaax kiimiko ah oo la wamiiray ama qayb ka mid ah saxarka caws kiimikaad oo la wamiiray oo saaran mishiinka warqadda. Iyada oo warqad saldhig u tahay saldhigga warqadda, midabada cad (sidoo kale loo yaqaan dhoobo, sida kaolin, talc, calcium carbonate, titanium dioxide, iwm.), dhejisyada (alkolada polyvinyl, casein, istaarijka la beddelay, cinjirka synthetic, iwm.), iyo agabka kale ee caawiya (sida wakiilada dhalaalaysa, qallafiyeyaasha, balaastikada, kala firdhiya, wakiilada qoynta, wakiilada opalescent, iftiimaya indhaha, toners, iwm), si siman dahaarka leh mishiinka daahan, oo la qalajiyey oo super calended sameeyey. Tayada warqadu waa labis oo adag, caddaanku waa sarreeyaa (ka sarreeya 85%), dusha warqaddu waa siman yihiin oo dhalaalaya, dahaarkana waa mid adag oo joogto ah.Sanduuqa keega
Waqtiga boostada: Seb-22-2022