Pressgum™ 3550 is a water-soluble polymer derived from cellulose. It carries an anionic charge, possesses a low molecular weight, and exhibits a high degree of substitution. The functional benefits of Pressgum 3550 include the ability to formulate plate and fountain solutions with high solid concentrations. This maximizes densensitizing levels while minimizing water usage. Additionally, Pressgum 3550 is functional over a wide pH range, making it suitable for use in both neutral and acidic fountain solutions.

End Uses: Anodized Aluminum Plates, Bimetal Plates, Fountain Solutions, Pre-Sensitized Aluminum Plates

Applicable Processes: Lithographic Gumming, Metal Manufacturing

Technical Data Sheet

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Enhanced TDS

Identification & Functionality

Features & Benefits

Product Benefits
  • Plate and fountain solutions prepared with Pressgum 3550 can be made with high solids concentrations.
  • This maximizes densensitizing levels with minimal water use.
  • Pressgum 3550 is functional over a wide pH range.
  • This allows its use in both neutral and acid fountain solutions.
  • Images remain sharp due to Pressgum 3550's film forming and adhesion properties.
  • Filtration steps can be avoided because solutions made with Pressgum 3550 are free of foreign mater and are residue free.

Applications & Uses

  • Fountain Solutions/Concentrates.
  • Gumming for Storage.
  • Pre-sensitized aluminum plates.
  • Plate Finishing.
  • Anodized aluminum plates.


Physical Form
Creamy - yellow granular powder
ValueUnitsTest Method / Conditions
Molecular Weight35,000 - 50,000Dalton-
Viscosity (12% w/w, at 25°C)300 - 500mPa.s-
Degree of Substitution1.15 - 1.45--
pH5.5 - 7.0--

Packaging & Availability

Packaging Type
Regional Availability
  • Global
Packaging Information

Pressgum™ 3550 is packaged in 55.115 lb (25 kg) bags with 40 bags per pallet.