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Inverform + Bio E

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Formable Solid Bleached Board

Inverform is a multi-layered product (solid bleached board, SBB), entirely based on fresh fibres. Specific fibre compositions are used for the various layers in the construction to optimise performance. The outer layers are dominated by hardwood fibres to promote smoothness and printability. The middle layer consists of softwood fibres for strength, flexibility and formability.

Product description

Inverform with a Bio E coating has been specially developed for ready-made food packaging. Bio E offers an option that relies less on fossil-based resources than conventional barriers. It is commonly used for pressed and folded food trays as well as for cups and containers.

Bio E is made from 75 per cent renewable raw materials and is approved for industrial composting. The material is suitable for applications where biodegradability is desired. The bio-based coating is both liquid and grease-resistant and fulfils requirements for food contact. The polymer is heat-sealable. It conforms to the European Standard regarding compostability, EN 13432, and also works well in most recycling systems.

Application areas

This product is suitable for the following applications:

Holmen Iggesund end use microwaving

Microwaving

Holmen Iggesund end use deep freezing

Deep freezing

Holmen Iggesund end use vapour

Vapour

Holmen Iggesund end use oxygen

Oxygen

Holmen Iggesund end use heat sealing

Heat sealing

Invercote/Inverform
Certifications & Standards

Product related

Possible to order as:

  

100% PEFC certified (PEFC/05-33-105)

FSC® Mix Credit 
(FSC®-C020071)

Food safety

Archiving

Toy safety

Certificate no:
TUEV-PEFC-COC-117551

Certificate no:
  TUEV-COC-002398

EC 1935/2004

EC 2023/2006

FDA 21 CFR

German BfR XXXVI

Acid free

EN 71 Part 3

EN 71 Part 9
All fibres from sustainable and controlled sources in compliance with the EU Timber Regulation EC 995/2010.
EcoVadis Platinum Medal awarded in 2024 (top 1% of all companies assessed).
 

Mill related

ISO 9001

ISO 14001

ISO 45001

ISO 50001

FSSC 22000

For more detailed information about our certificates, visit holmen.com/boardandpaper/certifications.

Common properties

Tolerances Methods/Remarks
Grammage (g/m²) 220-380 +/-6% ISO 536
ISO Brightness R457 - PS (%) 85 - ISO 2470-1
Moisture content (%) 8.0 +/-1.5 ISO 287
Cobb - PS (g/m²) 30 - ISO 535
Ply bond (J/m²) 160 ≥110 Tappi 569

Grammage dependent properties

Tolerances Methods/Remarks
Grammage (g/m²) 220 290 330 380 +/-6% ISO 536
Thickness (µm) 295 400 440 530 +/-6% ISO 534
Caliper (pt) 11.6 15.7 17.3 20.9 - ISO 534
Bending resistance L&W 15° - MD (mN) 180 400 570 800 -25% ISO 2493-1
Bending resistance L&W 15° - CD (mN) 80 160 210 320 -25% ISO 2493-1
Surface roughness Bendtsen - PS (ml/min) 400 400 400 700 - ISO 8791-2
Surface roughness Bendtsen - RS (ml/min) 500 600 600 800 - ISO 8791-2

Bio E properties

Tolerances Methods/Remarks
Added grammage (g/m²) 25-35 +/- 5% ISO 536
Added thickness (µm) 20-24 - Calculated value
Surface smoothness (µm) 5.0 - ISO 8791
Surface tensions (dynes/cm) ≥ 42 - ISO 8296
Adhesion 5 ≥ 4 Internal
Pin holes (no/m²) 0 - PTN 8-70 (modified)

The surface tension level can be affected after delivery by conditions beyond our control. Regarding Adhesion, the scale ranges from 1 to 6 (6 = the best possible adhesion on the concerned surface).

Holmen recommends a maximum 1 (one) year time limit, from delivery, for board in storage. For paperboard with barriers or foil lamination, the recommended storage time is no longer than 6 (six) months due to the declining effect of any surface treatments.

The above recommendations are only valid if the product is stored in its original wrapping.

Test methods

All properties are measured in test climate 23°C/50% RH at Iggesund Mill. Tolerances and max/min levels, when stated, are based upon a 95% confidence interval within each production run. Read more about testing methods in our General Technical Information.

 

Latest version

Access the latest version of this spec sheet on:
holmen.com/boardandpaper/inverform-bio-e

Related information

Products

Explore our range of innovative paper products and premium paperboards for graphical and packaging applications.

Applications

Our paper and paperboard products are widely used in luxury packaging, book publishing, direct marketing and more.

Sustainability

At Holmen, we are committed to using renewable materials and managing our resources in a sustainable way.