Sack Kraft Paper NSM
Natural unbleached sack Kraft paper is a brown unglazed grade with two rough matte sides.
It is ultra resistant and used especially for the manufacture of medium and large size sacks. It can also be used as a base for all types of coatings, laminating and packaging.
Its exclusive mechanical strength means that natural brown sack Kraft paper is adaptable to a wide range of industrial, packaging and processing applications.
For all relevant uses, natural Kraft papers are certified suitable for food contact, thanks to their pure virgin fibres.
This range is available in various qualities, all with high mechanical strength thanks to the pure pulp made from unbleached virgin fibres. The range offers an array of options to meet our customers’ demands.
Papers offered exclusively on rolls.
SACK KRAFT PAPERS NSM
Available in weights of 70 & 78 to 90 & 110 g/m², the Sack Kraft papers range offers high mechanical strength and meets all food contact requirements.
The mechanical characteristics of the NSM grade make it especially suitable for medium and large size sacks. It is also frequently used with coating, laminating, spiral-wound products, packaging and wrapping.
Technical Specification of – Standard Brown Sack Kraft Paper NSM
| No. | Property | Unit | Standart of test | Typical values 70 gsm | |
| 1 | Basic weight, 1m², g | g/m2 | GOST 13199 | 67-74 | |
| 2 | Tensile Strength, MD, kN/m, not less than | MD | kN/m | ISO 1924-3:2005 | 5,0 |
| 3 | Tensile Strength, SD, kN/m, not less than | CD | kN/m | 2,3 | |
| 4 | Absolute tearing strength, MD, mN, not less | MD | mN | GOST 13525.3 | 730 |
| 5 | Absolute tearing strength, SD, mN, not less | CD | mN | 760 | |
| 6 | Tear index, MD, mNm²/g, not less than | MD | mNm²/g | ISO 1924-3:2005 | 8,2 |
| 7 | Tear index, SD, mNm²/g, not less than | CD | mNm²/g | 9,5 | |
| 8 | Air permeability, cm³/min, not less | cm³/min | GOST 12525.14 | 200 | |
| 9 | Tensile strength, MD, N (kgs), not less than | MD | kgs | ISO 1924-3:2005 | 9,6 |
| 10 | Tensile strength, SD, N (kgs), not less than | CD | kgs | 4,3 | |
| 11 | Elongation, MD, % not less than | MD | % | ISO 1924-3:2005 | 1,5 |
| 12 | Elongation, SD, % not less than | CD | % | 3,9 | |
| 13 | TEA, MD, J/m², not less than | MD | J/m² | ISO 1924-3:2005 | 30 |
| 14 | TEA, SD, J/m², not less than | CD | J/m² | 55 | |
| 15 | TEA index, MD, J/kg, not less | MD | J/kg | ISO 1924-3:2005 | 0,5 |
| 16 | TEA index, SD, J/kg, not less | CD | J/kg | 0,8 | |
| 17 | Cobb test 60, Mesh side, g, no more | g | GOST 12605 | 27 | |
| 18 | Moisture % | % | GOST ISO 287 | 7,0-11,0 |
| Paper colour conforms the colour of natural fibre | Approvals: Produced in compliance with DfR and FDA food packaking norms | ||
| Test conditions according ISO 554 (23±1) 0C / (50±2)% | |||
| MD=Machine Direction, CD=Cross Direction | Certification: Voluntary forest certification FSC | ||