Brown Sack Kraft Paper

In order to give our brown paper grades the best possible strength properties, they are made out of virgin fibre from slow-growing pine and spruce. With efficient converting in mind, our paper is the ideal choice for a wide range of applications, such as sacks for cement & building materials, food and animal feed.

Advantage Speed is a brown extensible sack kraft paper combining high tensile energy absorption (TEA), excellent runnability and high porosity. We especially recommend its use without perforation for the quick filling of valve sacks with powdered substances in particular. This significantly reduces dust during filling and handling of the sacks, and has been shown to increase slip resistance.

Benefits of our Sack Kraft Papers

  • Strength
    Both our brown and our white sack kraft paper grades offer excellent strength properties. Our strongest grades have a TEA index of up to 3.8 J/g. These grades are ideal for 1-ply and 2-ply industrial bags with a filling weight up to 50 kg.
  • Porosity
    For fast and dust-free filling of cement or other powdered goods we offer papers with a perfect combination of strength and porosity. These papers are porous enough to allow efficient de-aeration of bags during filling so that perforation is not needed. Yet they are strong enough to withstand the tough demands of filling and handling.
  • Printability
    Our white sack kraft paper grades in particular offer excellent print characteristics. A smooth paper surface and uniform paper formation achieve a high-quality print result that enhances your bag`s point-of-purchase appearance.
  • Runnability
    In the bag converting plant, paper features such as strength, stiffness and surface smoothness must be stable to ensure effective operation of the high-speed machinery.

End-uses

  • Cement & Building Materials
  • Chemicals
  • Food
  • Animal Feed
  • Pet Food

 

Specification

Properties

 

Method

 

Typical values (please select the 2-10 most common grammages)

Basis Weight

g/m²

ISO 536

 

70

80

90

Tensile strength

kN/m

ISO 1924-3

md

cd

5.7

4.2

6.6

4.8

7.4

5.4

Tensile Index

Nm/g

ISO 1924-3

md

cd

82

60

82

60

82

60

Stretch at break

%

ISO 1924-3

md

cd

5.8

8.5

5.8

8.5

5.8

8.5

Tensile Energy Absorption (TEA)

J/m²

ISO 1924-3

md

cd

190

230

215

260

245

295

TEA Index

J/g

ISO 1924-3

md

cd

2.7

3.3

2.7

3.3

2.7

3.3

Tear Index

mN.m²/g

ISO 1974

md

cd

12.0

14.0

12.5

14.5

13.0

15.0

Air Resistance (Gurley)

s

ISO 5636-5

 

5

5

5

Cobb60

g/m²

ISO 535

 

32

32

32

The table above shows typical values for certain basis weights

Issued from 01.01.2021
Test conditions: ISO 187 : 1990 (23°C ± 1 C/RH 50% ±2)

MD = Machine Direction
CD = Cross Direction

Downloads