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 High Strength Plus is recommended to be used for particularly demanding applications.

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

 

Specifications

Properties

 

Method

 

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

Basis Weight

g/m²

ISO 536

 

70

80

85

90

Tensile strength

kN/m

ISO 1924-3

md

cd

6.0

4.8

6.8

5.4

7.2

5.8

7.7

6.1

Tensile Index

Nm/g

ISO 1924-3

md

cd

85

68

85

68

85

68

85

68

Stretch at break

%

ISO 1924-3

md

cd

8.0

8.5

8.0

8.5

8.0

8.5

8.0

8.5

Tensile Energy Absorption (TEA)

J/m²

ISO 1924-3

md

cd

265

265

300

300

325

320

345

330

TEA Index

J/g

ISO 1924-3

md

cd

3.8

3.8

3.8

3.8

3.8

3.8

3.8

3.7

Tear Index

mN.m²/g

ISO 1974

md

cd

13.0

13.0

13.0

14.0

14.0

14.0

14.0

14.5

Air Resistance (Gurley)

s

ISO 5636-5

 

15

15

15

15

Cobb60

g/m²

ISO 535

 

32

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  

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Related products

Advantage High Strength

Advantage High Strength is a brown, highly extensible sack kraft paper combining excellent runnability and extremely high tensile energy absorption (TEA).