TRAMACO launches adhesion promoter for screen printing

Last update on Mar 14, 2025
TRAMACO Launches Adhesion Promoter Screen Printing is launching , a newly developed adhesion promoter specially designed for use in printing inks, especially in screen printing. The chlorinated polypropylene impresses with its ECHA-compliant stabilizer and opens up a wide range of application and processing options in plastic coating and solvent-based adhesives.

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Key features


Product features and advantages:


  • High compatibility and very good pigment wetting capacity: TRAPYLEN® 189 S ensures excellent adhesion and at the same time a high gloss level and good weather resistance.
  • Versatile areas of application: In addition to its use as a binder for printing inks (especially screen printing), TRAPYLEN® 189 S can also be used as an adhesion promoter in plastic coatings and solvent-based adhesives (including NR/SBR and polychloroprenebased adhesives).
  • Proven adhesion to polypropylene, PP/EPDM and thermoplastic rubbers: Limited adhesion to polyethylene is also possible.
  • Grease and oil resistance: For higher requirements, TRAPYLEN® 189 S can be combined with other TRAPYLEN® grades with a lower chlorine content.

Processing and application:


  • Protection from moisture and sunlight
    To ensure the quality of the product, direct sunlight and humidity should be avoided. TRAPYLEN® 189 S is also available in pre-dissolved form if required
  • Solubility and solution recommendation
    - Soluble in aromatics, ethyl acetate and ketones
    - Insoluble in aliphatics and alcohols
    - Preparation of the solution: First place the solvent in a suitable container. Then add TRAPYLEN® 189 S while stirring (dissolver). The resin dissolves by shearing. The temperature should rise to approx. 60°C and be maintained for approx. 3 hours. The solids content is then adjusted to the desired concentration with additional solvent and filtered.
  • Additional quantity and further processing
    The necessary amount to be added to the main matrix must be determined for each application by appropriate tests.
    - Screen printing varnish: Usual application quantity is 3-4 g/m², drying time approx. 30 seconds at 80°C.

Technical data:


  • Product name: TRAPYLEN® 189 S
  • Chemical character: Chlorinated polypropylene
  • Texture: Brittle, slightly yellow and transparent granules
  • Chlorine content [%]: 36
  • Viscosity (dyn.) (50% in ethyl acetate) [mPas]: 400

Source: TRAMACO
Source
TRAMACO