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Invercote G

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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 consist 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 200 g/m² grammage version is 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 is certified as industrially biodegradable and compostable in compliance with the demands in the Directive EN 13432:2000.

Application areas

This product is suitable for the following applications:

packaging

包装

graphics

グラフィックス

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).
Recyclable according to CEPI Recyclability Test Method - Standard Paper Mill Version 2.
 

Mill related

ISO 9001

ISO 14001

ISO 45001

ISO 50001

FSSC 22000

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

Properties - Print side

許容値 許容値 方式/備考
米坪 (g/m²) 200 +/-4% 220-380 +/-4% ISO 536
色 L* - 印刷面 96.7 +/-0.8 96.7 +/-0.8 ISO 5631-2
色 a*- 印刷面 2.3 +/-0.6 2.3 +/-0.6 ISO 5631-2
色 b*- 印刷面 -7.9 +/-1.1 -7.9 +/-1.1 ISO 5631-2
白色度 - 印刷面 129 +/-5 129 +/-5 ISO 11475
ISOに基づく明るさ R457 - 印刷面 (%) 94 +/-2 94 +/-2 ISO 2470
表面の粗さ - 印刷面 (µm) 0.9 ≤1.4 0.9 ≤1.4 ISO 8791-4
グロス度75°- 印刷面 (%) 40 +/-10 40 +/-10 ISO 8254-1
表面強度 IGT ブリスター - 印刷面 (m/s) 0.7 ≥0.5 0.7 ≥0.5 ISO 3783
表面強度 IGT 紙むけ - 印刷面 (m/s) 1.3 ≥0.8 1.3 ≥0.8 ISO 3783
Cobbテスト - 印刷面 (g/m²) 30 ≤40 30 ≤40 ISO 535

Properties - Reverse side

許容値 許容値 方式/備考
米坪 (g/m²) 200 +/-4% 220-380 +/-4% ISO 536
色 L*- 裏面 96.4 - 96.5 - ISO 5631-2
色 a*- 裏面 2.0 - 1.6 - ISO 5631-2
色 b* - 裏面 -4.3 - -7.0 +/-1.1 ISO 5631-2
白色度 - 裏面 110 - 122 - ISO 11475
ISOに基づく明るさ R457 - 裏面 (%) 90 - 94 - ISO 2470
表面の粗さ - 裏面 (µm) - - 5.0 ≤7.0 ISO 8791-4
Cobbテスト - 裏面 (g/m²) 30 ≤40 30 ≤40 ISO 535

Common properties

許容値 許容値 方式/備考
米坪 (g/m²) 200 +/-4% 220-380 +/-4% ISO 536
含水率 (%) 6.0 +/-1.0 6.0 +/-1.0 ISO 287
層間強度 (J/m²) 160 ≥120 160 ≥120 Tappi 569
ロビンソン臭気汚染テスト <0.6 - <0.6 - EN 1230-2

Robinson taint value is below the detection limit of 0.6.  

Grammage dependent properties

許容値 方式/備考
米坪 (g/m²) 200 220 240 260 280 300 330 350 380 +/-4% ISO 536
厚さ (µm) 235 260 300 330 360 395 435 465 505 +/-4% ISO 534
キャリパー 嵩 (pt) 9.3 10.2 11.8 13.0 14.2 15.6 17.1 18.3 19.9 - ISO 534
不透明度 (%) 95.6 97.0 97.6 98.0 98.4 98.6 98.8 99.0 99.2 - ISO 2471
曲げ剛性 L&W 5° - MD (mNm) 8.2 11.9 16.2 20.8 29.9 38.5 50.8 61.8 77.9 - ISO 5628
曲げ剛性 L&W 5° - CD (mNm) 3.7 5.4 7.5 9.7 12.5 16.0 21.0 25.0 31.0 - ISO 5628
耐折強度L&W 15° - MD (mN) 95 140 190 245 315 405 550 650 820 -15% ISO 2493-1
耐折強度L&W 15° - CD (mN) 45 64 83 107 137 180 230 275 345 -15% ISO 2493-1
曲げモーメントTaber 15° - MD (mNm) 4.6 6.8 9.2 11.8 15.2 19.6 26.5 31.4 39.6 - ISO 2493-2
曲げモーメントTaber 15° - CD (mNm) 2.2 3.1 4.0 5.2 6.6 8.7 11.1 13.3 16.7 - ISO 2493-2
引っ張り強度 - MD (kN/m) 18.5 20.0 21.5 23.0 24.0 25.5 28.0 29.5 31.0 - ISO 1924-2
引っ張り強度 - CD (kN/m) 10.0 10.5 11.0 11.5 12.0 12.5 13.5 14.0 14.5 - ISO 1924-2
引裂強度 - MD (mN) 2300 2700 3100 3300 3700 4300 4700 5200 6400 - ISO 1974
引裂強度 - CD (mN) 2350 2800 3300 3600 4000 4600 5100 5600 6400 - ISO 1974

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 a 95% confidence interval within each production run. Read more about testing methods in our General Technical Information.

 

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