Invercote G

Solid Bleached Board, GZ


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Product description

Invercote G is designed for graphical products and prestige packaging where an exceptional aesthetic result is desired. Invercote G has a smooth surface that is tailored to faithfully reproduce the most sophisticated printed images and the high demands of flawless foil and film lamination. This surface, combined with Invercote G’s excellent structural, design and embossing characteristics make it ideal for the most demanding printing applications. Invercote G is recommended for high-end graphical applications and packaging, also for aroma and flavour sensitive products.

The printing side is triple coated and the reverse side is single coated, both sides are finished to a matt level. The 180 and 200 g/m² grammage versions are produced without reverse side coating. Thanks to its composition of solid bleached primary fibres, Invercote G has a superior strength and toughness compared to board grades that contain mechanical or recycled fibres or single-ply bleached primary fibre board. This strength gives several advantages in carton designing and processing, in packaging operations and in the use of the package itself.

A patented coating formula provides outstanding lightfastness, giving the end products a longer life. In addition to traditional printing techniques, Invercote is qualified and certified for most digital printing presses on the market today and suitable for digital finishing technology. Invercote G is also available as linen embossed sheets in all grammages.

 

Grammage (g/m²)180200220240260280300330350380
Thickness (µm) 205 235 260 300 330 360 395 435 465 505
Caliper (pt) 8.1 9.3 10.2 11.8 13.0 14.2 15.6 17.1 18.3 19.9
Tolerances:
Grammage ± 4% (ISO 536)
Thickness ± 4% (ISO 534)

 

The range is further extended by Invercote Duo, available in grammages 370 - 770 g/m². 

 

Certification      
Product related EFC PEFC credit
material
FSC® Mix Food Contact Toy safety Archiving
  2778 PEFC 44 751 117551 EC 1935/2004,
EC 2023/20061),
American FDA,
German BfR
EN 71 Part 3,
ISO 8124-3:2010.
ISO 9706
All fibres from sustainable and controlled sources in compliance with the EU Timber Regulation EC 995/2010.
Mill related ISO 14001 ISO 9001 FSC® C. o. C. PEFC C. o. C    
1) the GMP regulation, extended with CEPI GMP

 

More information, application examples as well as environmental declarations and other certificates can be found at www.iggesund.com.

 

Product properties

Properties       
  Printing side Reverse side
  Tolerances   Tolerances   Tolerances Methods/Remarks¹)
Grammage (g/m²) 180-380   180-200²)   220-380 ±4% ISO 536
Colour              
L* (%) 96.7 ±0.8 96.4 - 96.5 - ISO 5631-2
a* 2.3 ±0.6 2.0 - 1.6 - ISO 5631-2
b* -7.9 ±1.1 -5.0 - -7.0 ±1.1 ISO 5631-2
Whiteness (%) 129 ±5 113 - 122 - ISO 11475
ISO brightness (%) 94 ±2 94 - 94 - ISO 2470
Surface roughness (µm) 0.9 ≤ 1.4 - - 5.0 - ISO 8791-4
Board gloss 75° (%) 40 ±10 - - - - IS0 8254-1
Surface strength IGT (m/s)              
blister 0.7 ≥ 0.5 - - - - ISO 3783
pick 1.3 ≥ 0.8 - - - - ISO 3783
Cobb (g/m² 60 s) 30 ≤ 40 30 ≤ 40 30 ≤ 40 ISO 535
    Tolerances Methods/Remarks¹)
Ply Bond (J/m²) 160 ≤ 120 TAPPI 569
Moisture content (%) 6.0 ±1.0 ISO 287
Robinson taint Below the detection limit of 0.6   EN 1230, DIN 10955

1) See section General Technical Information
2) The 180 and 200 g/m² are produced without reverse side coating, thus other optical properties

 

Grammage dependent propertiesTolerancesMethods/Remarks¹)
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
Opacity 94.5 95.0 97.0 97.3 97.7 98.1 98.6 98.8 99.1 99.2 - ISO 2471
Bending stiffness3) L&W 5° (mNm)                        
MD 5.5 8.2 11.9 16.2 20.8 29.9 38.5 50.8 61.8 77.9 - ISO 5628
CD 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° (mN)                        
MD 65 95 140 190 245 315 405 550 650 820 -15% ISO 2493
CD 30 45 64 83 107 137 180 230 275 345 -15% ISO 2493
Bending moment Taber 15° (mNm)                        
MD 3.1 4.6 6.8 9.2 11.8 15.2 19.6 26.5 31.4 39.6 -15% ISO 2493
CD 1.4 2.2 3.1 4.0 5.2 6.6 8.7 11.1 13.3 16.7 -15% ISO 2493
Tensile strength (kN/m)                        
MD 17.0 18.5 20.0 21.5 23.0 24.0 25.5 28.0 29.5 31.0 - ISO 1924-2
CD 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 (mN)                        
MD 2000 2300 2700 3100 3300 3700 4300 4700 5200 6400 - ISO 1974
CD 2000 2350 2800 3300 3600 4000 4600 5100 5600 6400 - ISO 1974


1) See section General Technical Information
3) Stiffness ratings are reduced by 30% for embossed versions

 

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.

Carton of the year

The packaging for ambuja, a natural skin care collection from Legart Forschungsatelier, was the big winner at the 2015 ProCarton ECMA Awards when it was voted Carton of the Year.

The winning packaging is made of Invercote G 200 g/m2 from Iggesund Paperboard and has an exciting opening and closure mechanism that makes excellent use of Invercote’s structural properties.

The rebirth of a legend

One board, two different surfaces and countless possibilities. See for yourself what benefits Invercote can bring to your business!

Contact

Iggesund Paperboard
825 80 Iggesund
Sweden

+46 650 - 280 00
info@iggesund.com

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