Paper bag M64, M70, M78 GOST brands 2228-81
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Description
| Name of an indicator | M-64A | M-70A | M-78A | M-90A |
| Mass of paper of 1 sq.m, gram | 62-67 | 67-74 | 75-80 | 87-94 |
| Razgushayushchy effort in the cross direction, N (kgf), not less | 31 (3,2) | 42 (4,3) | 45 (4,6) | 57(5,8) |
| Relative lengthening at stretching in the cross direction, %, not less | 2,9 | 3,9 | 3,9 | 3,9 |
| Adsolyutny resistance to a tear in the machine direction, mn (Gs), not less | 700 (70) | 730 (76) | 820 (84) | 960 (98) |
| Air permeability of cm ³ / mines, not less | 200 | 200 | 200 | 200 |
| Superficial absorbency of water at unilateral wetting of the net party (Kobb60), g/m2, no more | 27 | 27 | 27 | 27 |
| Humidity, % | 7-11 | 7-11 | 7-11 | 7-11 |
Quality corresponds to GOST 2228-81
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Paper bag M64, M70, M78 GOST brands 2228-81