Cardboard Filters :: Filtertechnic.eu

Cardboard Filters

Product description

Cardboard filters are used to clean the air in industrial spray guns. Initially, cardboard filters are used in conjunction with nonwoven filtration components of the Paint-Stop variety, found in the interior of varnish walls. Cyclone-type filters, also known as cardboard harmonicas, possess a series of desirable features, such as:

  • Highly effective filtration – depending on the type of contamination – from 91% - when the dust is filtered from a glue with two components, to 98.1% for pulverulent contamination in a solid state
  • High Dust Absorptivity
  • The lack of the phenomenon of dust migration from the upper layers of the filter to the lower ones, as occurs when using fiberglass filters
  • Long Service Life
  • The permanent static resistance – this static resistance increases quite slowly in relation to the number of particles filtered out
  • This results in two very desirable phenomena – an airflow in the vicinity of the varnished elements is homogeneous, and the sprayer works in a clean atmosphere the whole time
  • The high degree of stiffness and durability – these filters are constructed from 240g/m2 pleated, stiffened, corrugated cardboard which is produced from recycled materials. This process assures the necessary stiffness and resistance to any sucking effect.

MECHANISM OF ACTION

A cardboard filter works on the principal of a cyclone or labyrinth.

A stream of air loaded with, for example, particles of paint, after reaching the internal parts of the filter, radically change their direction, which initiates a segregation of the paint fragments from the stream of air and placing them in a specially designed compartment. The design of the filter’s operation is shown in the drawing. Cardboard filters are offered in many different sizes.

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