Aktuelle Messwerte 02.09.2010

pH-Wert: 8,53
alkalische Reserve: 1,8% CaCo3/kg
Verfestigung: 30%
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BCP – the only mechanical single-sheet process which not only deacidifies the paper, but also simultaneously consolidates the paper and sustainably safeguards it from deterioration.


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Bückeburg (BCP) process

  • Fixation of writing materials with Rewin® and Mesitol®
  • Deacidification with magnesium hydroxide carbonate
  • Consolidation of paper with methyl cellulose
Results *
  • pH value increase from 4.19 to 8.52
  • Alkaline reserve of 1.8 % CaCo3/kg
  • Up to 30 % consolidation

* Test conducted by the Papiertechnische Stiftung München (PTS – Paper Technology Foundation)

Zeitungsbestände dauerhaft sichern

For the conservation of single sheets we offer modular systems with a throughput of approximately 300 to 550 DIN A4 sheets per hour. This performance data is based on the figures achieved in our own production runs, and depend on the respective paper qualities and conditions at each site.

The Bückeburg conservation process further developed by GSK guarantees long-term deacidification, alkaline buffering and consolidation of paper.


The compact treatment unit of the CM series

Needed facility circuit:

  • Operation area from 7.0 x 3.00 to 10.50 x 3.00 metres
  • Fresh water supply
  • Sink (100 mm) close to the middle of the machine
  • Air condition (recommended) to keep the relative humidity at approx. 60-70 %
  • Dark and dry storage room for conservation liquid
  • Tiled floor
  • Illumination in the working room around 1000 lux (recommended)

The construction is based upon recent findings in the field of gentle automatic transportation of archival documents. The compact treatment unit comes in versions with paper return (to be operated by one person) and without return (two operators). For conservation of especially sensitive or large-format materials such as newspapers, we recommend a unit without return.

Depending on workloads and technical requirements you can choose from various basic modules and load capacities for the compact treatment unit. GSK Machinery and local distributors are happy to advise you and will prepare an individual offer matching your specific requirements.


Characteristics of GSK conservation units for single sheets using the example of the CM series:

  • Made in Germany
  • Modular construction – production capacity can be increased in stages
  • Adaptable to customer requirements and local conditions regarding size and performance (the machines comply with technical specifications applicable in the country used and other requirements necessary for their operation)
  • Primarily standardised components, spare parts available worldwide at short notice
  • Gentle paper transport on a single level
  • Physical transport, treatment of the papers and the chemical behaviour of the active ingredient solution form an optimally coordinated system
  • Easy cleaning
  • Easy to repair and service

Additional information on sales and scope of supply


Overview of models for the CM compact treatment unit for single-sheet conservation

Machine Design Output sheets/h Max. paper format Pers. Length in mm Width in mm Height in mm Working height mm Required space
mm x mm
Special features
cm3000  without return 350 DIN A1 2 6000 1060 1420 1000 - 1100 9000 x 3060 Recommended for highly damaged or large-format material such as newspapers
cm3000R with return 350 DIN A2 1 4000 1060     5500 x 3060 Recommended for cramped
space conditions
cm4000 without return 480 DIN A1 2 7500 1060 1420   10500 x 3060 Recommended for highly damaged or large-format material such as newspapers
cm4000R with return 480 DIN A2 1 5000 1060     6500 x 3060 Recommended for cramped
space conditions