Invercote T CNTC

Invercote T2

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InvercoteT_layers

Solid Bleached Board

Invercote 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 and flexibility.

Product description

Invercote T is designed for packaging and manufactured without the addition of fluorescent whitening agents (FWA). Whiteness is achieved only through the coating and the pure white fibre in the baseboard. Thanks to its composition of solid bleached primary fibres, Invercote T has superior strength and smoothness along with ideal structural and embossing characteristics, offering several advantages related to design, packaging operations and usage. The board has a Crease Recovery Resistance (CRR) adapted to high speed packaging lines, allowing great runnability and providing excellent box geometry. The printing side is fully coated and finished to a matt level which gives Invercote T a smooth surface. The smooth surface allows for demanding printing as well as uniform ink absorption and the solvent retention after gravure printing is particularly low, allowing for shorter storage time after printing.

End use areas

This product is suitable for the following end use areas.

Holmen Iggesund end use box

Packaging

Invercote/Inverform
Certifications & Standards

Product related

Possible to order as:

  

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

FSC® Mix Credit 
(FSC-C110018)

Food safety

Archiving

Toy safety

Certificate no:
TUEV-PEFC-COC-117551

Certificate no:
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 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 iggesund.com/certificates.

Properties - Print side

Tolerances Methods/Remarks
Grammage (g/m²) 220-280 +/-5% ISO 536
Colour L* - PS 96.1 - ISO 5631-2
Colour a* - PS -0.3 - ISO 5631-2
Colour b* - PS 3.5 +/-1.0 ISO 5631-2
Whiteness - PS 75 - ISO 11475
ISO Brightness R457 - PS (%) 86 +/-2.0 ISO 2470
Surface roughness PPS - PS (µm) 1.1 +0.3/-0.4 ISO 8791-4
Board gloss 75° - PS (%) 40 +/-10 ISO 8254-1
Ink Absorption - PS (%) 35 - -
Surface strength IGT blister - PS (m/s) 1.1 ≥0.5 ISO 3783
Surface strength IGT pick - PS (m/s) 1.4 ≥0.8 ISO 3783
Cobb - PS (g/m²) 35 +10/-20 ISO 535

04 Sep 2023

Properties - Reverse side

Tolerances Methods/Remarks
Grammage (g/m²) 220-280 +/-5% ISO 536
Colour L* - RS 95.8 - ISO 5631-2
Colour a* - RS -0.4 - ISO 5631-2
Colour b* - RS 4.5 - ISO 5631-2
Whiteness - RS 69 - ISO 11475
ISO Brightness R457 - RS (%) 84 +/-2.5 ISO 2470
Cobb - RS (g/m²) 35 +10/-20 ISO 535

04 Sep 2023

Common properties

Tolerances Methods/Remarks
Grammage (g/m²) 220-280 +/-5% ISO 536
Moisture content (%) 5.5 +/-1.0 ISO 287
Ply bond (J/m²) 120 ≥100 Tappi 569
Robinson taint <0.6 - EN 1230-2
Direct emission CO2 (kg CO2/ton) 39 - CEPI Framework
Indirect emission CO2 (kg CO2/ton) 1 - CEPI Framework
Carbon footprint (kg CO2/ton) 184 - CEPI Framework

04 Sep 2023

Grammage dependent properties

Tolerances Methods/Remarks
Grammage (g/m²) 220 240 280 +/-3% ISO 536
Thickness (µm) 275 305 365 +/-4% ISO 534
Bending stiffness L&W 5° - MD (mNm) 12.9 17.0 28.6 - ISO 5628
Bending stiffness L&W 5° - CD (mNm) 6.5 8.6 14.2 - ISO 5628
Bending resistance L&W 15° - MD (mN) 148 197 312 -15% ISO 2493-1
Bending resistance L&W 15° - CD (mN) 74 98 156 -15% ISO 2493-1
Bending moment Taber 15° - MD (mNm) 7.1 9.5 15.1 - ISO 2493-2
Bending moment Taber 15° - CD (mNm) 3.6 4.7 7.5 - ISO 2493-2
Tensile strength - MD (kN/m) 13.5 14.5 16.5 - ISO 1924-2
Tensile strength - CD (kN/m) 9.0 9.5 10.0 - ISO 1924-2
Tearing resistance - MD (mN) 2600 2900 3600 - ISO 1974
Tearing resistance - CD (mN) 2900 3100 4100 - ISO 1974

Last updated 01 Oct 2023

Bending Moment Taber is a calculated value based on a correlation factor of 20.7.