These are the sales outlets of Knuchel Farben AG throughout Switzerland. Here you can find out more about the range of services and opening hours.
Subsidiary specialized in high quality painting and coating systems for industry, steel and hydraulic engineering as well as in many special fields.
Knuchel Farben AG's well-known brand for building protection products. Serves as a secondary brand, where an independent appearance should be possible.

Frequent or possible causes when handling paints

During processing

Difficulty of spreadability
  • The consistency of the paint material is too high and has to be thinned again by means of dilution.
  • Addition of unsuitable, e.g. too volatile solvents
  • Too warm substrate (too fast drying of the paint)
Poor wetting of the substrate
  • Fat and wax residues or silicone-containing substrate (remove by grinding or cleaning with solvents)
  • Moisture on the substrate
  • Too greasy substrate (grind or wash off with ammonia water)
Insufficient coverage
  • Too thin application of the ink material (ink too thin)
  • Struck out too much
  • Insufficient stirring of the paint material
  • The colour of the substrate is so different that it cannot be covered with a single coat of paint
Struck out too much
  • Paint that dries too quickly (e.g. thinner that is too volatile) for large-area coatings
  • Addition of unsuitable, e.g. too volatile diluent
  • Processing at too high temperatures
  • Too thick or too thin application
Untidy looking surfaces
  • Conspicuous dust on lying paint (unsuitable, dusty environment)
  • Unclean substrate (grinding dust not removed)
  • Dirty paint (stirred in skin)
  • Mixture of incompatible paints or addition of incompatible thinners
  • Dirty bristles or new brush
Poor drying out
  • Too rich order, e.g. due to difficult spreadability
  • Insufficiently dried primer coat
  • Surface drying too quickly due to excessive heat or sunlight. Prevents healthy drying from bottom to top
  • Addition of slowly evaporating solvent

After processing

Loss of gloss
  • Exposure of fresh paint to moisture (fog, dew, rain)
  • Highly absorbent substrate
  • Too much thinner and poorly filling substrate
  • Badly stirred paint
Poor adhesion
  • Missing or unsuitable primer
  • Dirt, dust, wax and grease layers on the substrate
  • No pretreatment on old coating
  • Too thick application and poor drying
  • Surface drying too fast
  • Insufficient connection to the substrate due to layers of grease or wax
Bubble formation / silicone dots
  • Damp underground
  • Material containing silicone in the working area (transfer by rag or air)
  • Spray gun insufficiently cleaned (use hammer finish paint) or condensation water from compressor
  • Porous substrate (ascending air bubbles in fresh paint)
  • Fog or dew in the fresh coat of paint