Beeraha Isugeyntooda oo dhan {{5} illaa 1960-yadii, wadamada tikniyoolajiyadda horseedku sida Mareykanka ay ka qaateen habka lagu buufiyo dhirta, geedaha yar yar ee beeraha ah ee beeraha ah ee beeraha . ah paraffin . paraffin badiyaa loo isticmaalaa:
(1) Beeritaanka saplings . ka hor beero geedaha geed ee duurjoogta ah, waxaa lagu dhex geliyay paraffin, saplings-ka si weyn u kordhay ee uumiga ee caleemaha si weyn u kordhay ee biyuhu hoos udhaca dusha sare ee caleemaha {{5}
(2) Beeritaanka xanaanada beerta . inta lagu gudajiro goosashada ama ku-tallaalidda, heerka badbaadada ayaa si weyn loo wanaajin karaa paraffin . haddii tiro badan oo ku-meel-dhac ah ay ka dhigto paraffin-ka, waxay xaqiijineysaa ku-tallaalidda emulsion {{4}
(3) iska caabinida abaarta iyo ilaalinta {{1} kadib markii saplings iyo jirrid lagu buufiyo paraffin, waxay u horseedi karaan paraffin, ka dibna lagu daaweyn karo paraffin, oo nolosha ubaxa ayaa si weyn u dheerayn kara {{4}
Warshadaha waraaqaha: Inta badan waraaqda ku jirta nidaamka xulashada warqadda ayaa gudaha ka buuxsamay caag gudaha ah, kaas oo ka dhigaya filimka caadiga ah ee kafaalata . ee ku daraya parafsin parafsin ah oo ay yareyn karto hygroscopicion ee warqadda oo kor u qaadida qaybinta labbiska Cirrid qaab dhismeedka warqadda {{4}) Faa'iidada kale ee loo yaqaan 'paraffin' ee resin ayaa la wanaajinayaa oo lagu hagaajin karaa xarunta dusha sare ee {{5} ee la soo bandhigi karo isku-darka dusha sare ee . noocyo kala duwan oo noocyo ah oo emulsif ah ayaa hadda la soo saaray Iyada oo ah wakiilka hydrophobic ee soosaarka warqad daabacaadda fasalka sare .