Invercote G

Invercote G

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InvercoteG 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 layers consists of softwood fibres for strength and flexibility.

Product description

Invercote G is designed for prestige packaging applications and high-end graphical designs where an exceptional aesthetic effect is desired. Invercote G has an ultra-smooth surface with a triple-coated print side that are tailored to reproduce print images and meet the high demands of foil and film lamination, the reverse side is single-coated. It has a matt finish on both sides, excellent whiteness and a patented coating formula that provides outstanding lightfastness, giving the end products a longer life. Invercote G is suitable for aroma and flavour sensitive products as well.

The 180 and 200 g/m² grammage versions are produced without reverse side coating. Invercote G is also available as linen embossed sheets in all grammages. Invercote G in the grammages 260-380 g/m² are certified as industrially biodegradable and compostable in compliance with the demands in the Directive EN 13432:2000.

End use areas

This product is suitable for the following end use areas.

Holmen Iggesund end use box

Packaging

Holmen Iggesund end use graphics

Graphics

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.

Properties - Print side

Tolerances Methods/Remarks
Grammage (g/m²) 180-380 +/-4% ISO 536
Colour L* - PS 96.7 +/-0.8 ISO 5631-2
Colour a* - PS 2.3 +/-0.6 ISO 5631-2
Colour b* - PS -7.9 +/-1.1 ISO 5631-2
Whiteness - PS (%) 129 +/-5 ISO 11475
ISO Brightness R457 - PS (%) 94 +/-2 ISO 2470
Surface roughness PPS - PS (µm) 0.9 ≤1.4 ISO 8791-4
Board gloss 75° - PS (%) 40 +/-10 ISO 8254-1
Surface strength IGT blister - PS (m/s) 0.7 ≥0.5 ISO 3783
Surface strength IGT pick - PS (m/s) 1.3 ≥0.8 ISO 3783
Cobb - PS (g/m²) 30 ≤40 ISO 535

Properties - Reverse side

Tolerances Tolerances Methods/Remarks
Grammage (g/m²) 180-200 +/-4% 220-380 +/-4% ISO 536
Colour L* - RS 96.4 - 96.5 - ISO 5631-2
Colour a* - RS 2.0 - 1.6 - ISO 5631-2
Colour b* - RS -5.0 - -7.0 +/-1.1 ISO 5631-2
Whiteness - RS (%) 110 - 122 - ISO 11475
ISO Brightness R457 - RS (%) 90 - 94 - ISO 2470
Surface roughness PPS - RS (µm) - - 5.0 ≤7.0 ISO 8791-4
Cobb - RS (g/m²) 30 ≤40 30 ≤40 ISO 535

Common properties

Tolerances Methods/Remarks
Grammage (g/m²) 180-380 +/-4% ISO 536
Moisture content (%) 6.0 +/-1.0 ISO 287
Ply bond (J/m²) 160 ≥120 Tappi 569
Robinson taint <0.6 - EN 1230, DIN 10955

Robinson taint value is below the detection limit of 0.6.  

Grammage dependent properties

Tolerances Methods/Remarks
Grammage (g/m²) 180 200 220 240 260 280 300 330 350 380 +/-4% ISO 536
Thickness (µm) 205 235 260 300 330 360 395 435 465 505 +/-4% ISO 534
Caliper (pt) 8.1 9.3 10.2 11.8 13.0 14.2 15.6 17.1 18.3 19.9 - -
Opacity (%) 94.0 95.6 97.0 97.6 98.0 98.4 98.6 98.8 99.0 99.2 - ISO 2471
Bending stiffness L&W 5° - MD (mNm) 5.5 8.2 11.9 16.2 20.8 29.9 38.5 50.8 61.8 77.9 - ISO 5628
Bending stiffness L&W 5° - CD (mNm) 2.5 3.7 5.4 7.5 9.7 12.5 16.0 21.0 25.0 31.0 - ISO 5628
Bending resistance L&W 15° - MD (mN) 65 95 140 190 245 315 405 550 650 820 -15% ISO 2493-1
Bending resistance L&W 15° - CD (mN) 30 45 64 83 107 137 180 230 275 345 -15% ISO 2493-1
Bending moment Taber 15° - MD (mNm) 3.1 4.6 6.8 9.2 11.8 15.2 19.6 26.5 31.4 39.6 - -
Bending moment Taber 15° - CD (mNm) 1.4 2.2 3.1 4.0 5.2 6.6 8.7 11.1 13.3 16.7 - -
Tensile strength - MD (kN/m) 17.0 18.5 20.0 21.5 23.0 24.0 25.5 28.0 29.5 31.0 - ISO 1924-2
Tensile strength - CD (kN/m) 9.5 10.0 10.5 11.0 11.5 12.0 12.5 13.5 14.0 14.5 - ISO 1924-2
Tearing resistance - MD (mN) 2000 2300 2700 3100 3300 3700 4300 4700 5200 6400 - ISO 1974
Tearing resistance - CD (mN) 2000 2350 2800 3300 3600 4000 4600 5100 5600 6400 - ISO 1974

Last updated 30 Nov 2022

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

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 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/invercote-G

Holmen Iggesund QR code