Investigation into the friction and roughness properties of prints using conventional and UV inks/UV ir iprastais dazais spausdintu atspaudu siurkstumo ir trinties savybiu tyrimas

The article experimentally investigates the properties of offset print friction and determines static and kinetic coefficients of friction. Conventional and UV inks have been found to increase the static friction coefficient and reduce the kinetic friction coefficient between paper and print. The roughness properties of two different types of paper and prints using conventional and UV inks have been examined and compared thus determining that conventional inks strongly increase the roughness of print surface and that the influence of UV inks depend on the type of paper. Keywords: conventional inks, friction, paper, prints, roughness, UV inks. Nagrinejamos popieriaus ofsetiniu atspaudu trinties savybes ir nustatyti statinis bei kinetinis trinties koeficientai. Nustatyta, kad iprastiniai ir UV dazai didina atspaudo i popieriu statitinio trinties koeficiento dydi ir mazina kinetinio koeficiento dydi. Atliktas dvieju rusiu popieriaus su iprastais ir UV dazais siurkstumo palyginamasis tyrimas ir nustatyta, kad iprasti dazai atspaudu pavirsiaus siukstuma stipriai didina, o UV dazu poveikis priklauso nuo popieriaus rusies. Reiksminiai Zodziai: atspaudai, iprasti dazai, popierius, siurkstumas, trintis, UV dazai.