PURPOSE
Printing of newspapers and other publications by offset and other printing methods
Technical conditions
(TC BY 790282162.018-2018)
| Paper weight with an area of 1sq.m., g | 48,8±2,0 50,0±2,0 52,0±2,0 |
48,8±2,5 50,0±2,5 52,0±2,5 |
48,8±3,0 50,0±3,0 52,0±3,0 |
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| Density, g/cm | ||||||
| Breaking length in the machine direction, m | ||||||
| Absolute tear resistance in the transverse direction, mN | ||||||
| Smoothness on each side, s | ||||||
| Whiteness, % | ||||||
| Non-transparency, % | ||||||
| Degree of impurity- the number of specks per area of 1sq.m.: – from 0.5 to 1.5 sq.m.; – from 1,5 to 2,0 sq.m.; – more than 2,0 sq.m. |
⩽75 ⩽8 0 |
⩽50 0 0 |
– ⩽20 0 |
⩽60 ⩽1 0 |
– – ⩽20 |
⩽80 ⩽2 0 |
| Humidity, % | ||||||
Additional information
On the surface of paper O, B grades no folds, wrinkles, glossy stripes, transparent spots and holes that are visible to the naked eye are allowed On the surface of U grade paper holes visible to the naked eye are not allowed. Subtle folds, wrinkles, glossy stripes, transparent spots and holes that can not be detected in the manufacturing process, are allowed if the index of these intra-roll defects does not exceed for O grade paper grade -2.0%, for B grade paper -2.5%, for U grade paper -5%. It is possible to produce newsprint paper according to State Standard GOST 6445-74