TECHNICAL SERVICES DOCUMENT

TARGET SECTOR

Corrugated Packaging

MANUFACTURED IN GREAT BRITAIN

Corrugating Papers

FLUTED DESIGNS FOR A STRONG AND LIGHTWEIGHT SOLUTION

Packaging not only makes the product easy to identify on the shelf, it uses design and colour to reinforce the brand identity.

James Cropper’s high quality corrugating materials enhance the image of some of the world’s leading premium branded products. Fluted designs are both lightweight and have inherent physical strength to offer extra protection to the product.

Our corrugating papers are supplied to the packaging industry for conversion into corrugated board.

A standard sheet of corrugated board is made from 3 components of an outer liner paper and an inner liner paper, with a fluting paper in the middle.

All of our products are made from sustainable fibres and 100% recyclable.

Every corrugating paper we make is engineered to withstand the rigours and tight constraints on the corrugating machine and in the final box.

This basic diagram shows the profile of a corrugated board with fluting and liners.

Do we have to buy a different grade for liners and flutes?

Many fresh fibre corrugated grades are strong enough to cope with the rigour of both the liner and the fluting part of the corrugating process. In the case of fresh fibre grades one quality will do both jobs.

100% recycled grades are a little different – while strong enough for the liner application, a special treatment is required for the flute application. The special treatment has a tendency to cause streaking on the surface of the paper. Such streaking is not visible on the fluted application, but would be on the liner application. It is for this reason that James Cropper recommends different liner and flute grades for recycled corrugating qualities.

Can I use corrugated grades for food contact applications?

James Cropper offers one deep black corrugating grade with Food Contact Certification. It is possible to develop other colours for such food contact applications.

Such new product developments require an agreed investment and a timescale of c. 4 months.

Are corrugated grades suitable for archival applications?

Yes, James Cropper does indeed manufacture corrugating liners which conform to ISO9706 permanence requirements. Further information is available on demand.

Can CupCyclingTM fibres be used in corrugating grades?

Yes, it is possible to incorporate 20% CupCyclingTM fibres into corrugating grades in agreement with customers on the qualities in question.

APPLICATION SUITABILITY

• Gift packaging

• Retail packaging

• Cosmetic packaging

• Candle packaging

• Fragrance box liners (or inserts)

• Portable electronic packaging

• Premium protective carriers

PRINT SUITABILITY

• Litho lamination

• Silkscreen

• Flexography

• Relief Processes

• Inkjet

• Die Cutting

• Laser Cutting

• Foil Blocking *

• Drilling & Punching

NOTE: *Black carbon-free suitable for metallic foiling

Can I have a unique colour?

Yes, James Cropper will develop new colours for corrugating on a regular basis.

We simply need to know substance, width and volumes required to understand the nature of the demand of the new colour required.

Corrugating Papers

CORRUGATING QUALITITES AVAILABLE

Recycled Black Corrugating Liner - manufactured from 100% recovered fibres this black paper is suitable for both top and bottom liner applications of the corrugating process. It offers consistency in shade and appearance.

Recycled Black Corrugating Flute - manufactured from 100% recovered fibres and specially treated to add surface strength. Developed over decades this specially treated grade is strong enough to stand up to all types of fluting.

Premium Black Corrugating Flute & Liner - a deep black, carbon-free paper which can be used for both liner and flute applications. For corrugators who want one multi-purpose grade to perform through all aspects of the corrugating process.

Food Contact Corrugating Flute & Liner - a fresh fibre deep black carbon-free corrugating quality, developed to perform through both liner and flute applications. Certified for food contact applications.

Coloured liners and flutes + Archival liners and flutes both available on request.

TECHNICAL DATA

Recycled Liner Recycled Flute Premium Black Food Contact Tolerance Standard

Grammage g/m2 : 100 120 110 100 ± 5% ISO 530

Thickness μm : 135 170 125 120 ± 7.5% ISO 534

Burst kPa : 220 240 330 300 Minimum ISO 2758

Cobb (1 min) g/m2 : 25 25 25 25 Target ISO 535

Bendtsen Smoothness ml/min: 700 1400 200 250 Target ISO 2494

Wax Pick / Clear: 12 12 12 14 Minimum Dennison

Relative Humidity: 50 50 50 50 ± 10

Moisture % : 7.5% 7.5% 7.5% 7.5% Nominal ISO 287

JAMESCROPPER.COM | +44(0) 1539 818240 | BURNESIDE MILLS, KENDAL, CUMBRIA. LA9 6PZ. GB

CUSTOMERSERVICE@CROPPER.COM CORRUGATING

ENVIRONMENTAL CREDENTIALS MILL CERTIFICATIONS

REACH Compliant

(EC No 1272/2008)

Controlled Wood Sources

CONEG Compliant

Fully Recyclable

Elemental Chlorine Free

94/62/CE & EN71-3 Compliant

CHP Recycling Energy

ISO 14001 cert. no. EMS 57536

ISO 9001-2000 cert. no. FM 10048

ISO 50001:2011 cert. no. ENMS 623280

OHSAS 18001 cert. no. OHS 93474

FSC® STD-40-004 cert. no. TT-COC002177

PEFC/ 16-44-002 cert. no. BMT-PEFC-0252

Manufactured in Great Britain