Page 47 - Bresciani Paper Conservation

Corrugated board
BRESCIANI
Materiali ed Attrezzature
per il Restauro e la Conservazione
K021 –MW 1.6 mm
Corrugated board made from ageing resistant material, total thickness 1.6 mm, natural white in colour. Top ply printed light grey. The individual board plies are glued moisture-proof and the board is ageing resistant in accordance with ISO 9706. This corrugated board quality is the base material used for making archival boxes, files, folders and is also suitable for conservation quality picture framing.
Base paper
• 100 % bleached cellulose
• Without the usage of recycling fibres
• Free of wooden fibres
• Kappa level 1 - 2 = lignin-free
• pH 7.5 - 10.0 = acid-free (in accordance with ISO 6588-1:2005)
• 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 (OBA-free)
• Lightfastness 8 (= excellent) in accordance with the wool scale (ISO 12040:1998)
• No bleeding in accordance with DIN ISO 16245:2012
• High abrasion resistance in accordance with DIN 53109:2008
• Photographic Activity Test (PAT) passed in accordance with ISO 18916:2007
Glue used for the corrugated board
• Starch-based adhesive • pH > 8.0
• Moisture-proof gumming
DIN EN ISO 9706:2010 Information and documentation - Paper for documents - Requirements for permanence
DIN ISO 16245:2012 Information and documentation - Boxes, file covers and other enclosures, made from cellulosic materials, for storage of paper and parchment documents.
ANSI/ NISO Z.39.48:1992 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
Corrugated board MW 1.6 mm – long grain "LG"
Items K021-104 and K021-105 Top ply light grey ; base natural white "Dimension A" defines the flute length (A = 100/110 cm)
"Dimension B" defines the cut-off length (B = 172 cm)
Syntax A x B cm = 100 x 172 cm and 110 x 172 cm
The syntax is also applicable for the paper grain direction. All the three plies of paper are cut long grain.
190 gsm light grey 135 gsm natural white 190 gsm natural white
BRESCIANI s.r.l. - via Breda 142 - 20126 Milano - tel. 02.27002121 r.a. - fax 02.2576184 www.brescianisrl.it - e-mail: info@brescianisrl.it Pag.46/97