holmen_iggesund_red

Inverform

Choose preferred language.

Want to download this page as a PDF?

Select your document references and get your own copy of product specification of Inverform.

Formable Solid Bleached Board

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 is specially developed for ready-made food packaging. It has exceptional formability, product consistency and unique stretch properties that make it ideal for the deep drawing and thermo forming technology used to shape trays and other packaging. Inverform is an uncoated substrate that can be coated, extruded or laminated using all available extruded barriers. It is made from pure cellulose fibres sourced from sustainably managed forests and complies with FDA and other food hygiene packaging regulations.

End use

The specific properties of the product allow it to be used in the following areas.

cutlery

Cutlery

trays

Trays

plates

Plates

food container

Food container

Invercote/Inverform
Certifications & Standards

Product related

PEFC
credit
material

FSC® Mix

Food safety

Archiving

Toy safety

2778 PEFC

TUEV-COC-000232

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 2023 (top 1% of all companies assessed).
 

Mill related

ISO 9001

ISO 14001

ISO 45001

ISO 50001

FSC®

FSSC 22000

For more detailed information about our certificates, visit iggesund.com/certificates.

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 - -
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

Test method

All properties are measured in test climate 23°C/50% RH at Iggesund mill. Tolerances and max/min levels, when stated, are based upon 95% confidence interval within each production run.

Read more about testing methods in our section about General Technical Information.

Online version

Access the online version of this spec sheet on:
iggesund.com/inverform

Holmen Iggesund QR Code