Corrugated Board

Description

Corrugated board made from ageing-resistant material, overall thickness 1.65mm, natural white in colour.

Top ply made from grey-blue archival board, 190gsm, surface specially treated, dirt-resistant, erasable and rub-proof (dry wiping).

Base paper

• 100% bleached cellulose
• without the usage of recycling fibres
• free of wooden fibres
• weight 560 gsm
• Kappa level < 5 = lignin-free
• pH 7.5 – 10.0 = acid-free (in accordance with ISO 6588-1:2020)
• alkaline buffer > 2% natural calcium carbonate (GCC)
• sizing: neutral/synthetic (without alum additive)
• top surface sizing: Cobb60 in accordance with ISO 535 < 25
• without optical brightening agents
• light-fastness approx. 7 – 8 (= extremely good) in accordance with the wool scale (EN ISO 105-B02)
• no bleeding in accordance with DIN ISO 16245:2012
• high abrasion resistance in accordance with DIN 53109:2008
• special surface strengthening (dirt-resistant and erasable)
• Photographic Activity Test (PAT) passed in accordance with ISO 18916:2007

Glue used for the corrugated board

• starch-based adhesive
• pH 7.0 – 8.0
• moisture-proof gumming

 

This quality corresponds to the technological basis of the following standards:

DIN EN ISO 9706                 Information and documentation – Paper for documents – Requirements for permanence

DIN ISO 16245 – type A       Information and documentation – Boxes, file covers and other enclosures, made from cellulosic materials, for storage of paper and parchment documents.

NF Z 40-014                           Requirements and criteria for selecting paper and cardboard for conserving paper and parchment documents

ANSI/ NISO Z.39.48           American National Standard for Permanence of Paper for Publications and Documents in Libraries and Archives

DIN 6738:2007                    Highest level of permanency LDK 24-85