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Path-dependent Airless marking and Line width stabiliser – our pumps stay calm, no matter what the situation

Line width stabilizer keeps variation in line width during path-dependent Airless spraying method (AMAKOS®) automatically in minimum ranges. 

Available application techniques
  • Cold paints
  • Sprayable 2 component cold-plastics

HOFMANN pumps for Airless spraying permit variation of marking speed over a large range at a constant paint quantity per metre of line length (AMAKOS®). The paint quantity pumped by the pump is thus proportional to the speed of travel of the machine. 

Hence, as the speed increases, so too does the quantity of paint that is pressed through the spraying nozzle per unit of time, accompanied by an increase of pressure in the paint pipe to the nozzle. It is well-known that an increase in the spraying pressure results in an enlargement of the spraying angle. With an unchanged distance between the gun and the road surface this results in an enlargement of the line width. This effect is dependent on the nozzle and the paint used. However, due to the pressure influence variator line width variation can be kept within minimum ranges in a large speed area.

Available application techniques
  • Cold paints
  • Sprayable 2 component cold-plastics

The function principle is shown by the following illustration:

Functional principle of line width stabilizer with low speed
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Functional principle of line width stabilizer with low speed

Functional principle of line width stabilizer with high speed
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Functional principle of line width stabilizer with high speed

The component marked by an R in the illustration is a frame that always moves parallel to the road surface. The pistol holder with the spray gun fastened to it is connected to the frame via articulated arms. An electrical adjustment cylinder is attached between the frame R and the upper articulated arm and the operation of the same moves the spray gun upwards or downwards. 

A pressure sensor P continuously records the actual spraying pressure of the paint and is transmitting the values to a control unit, which calculate the height of the spray gun in such a way that the line width almost remains constant even in case the spraying angle varies. 

With increasing marking speed, i.e. with increasing paint pressure, the spray gun is pushed further and further downwards as a result of which the effect of the enlargement of the spraying angle on the spraying width is compensated.

  • HOFMANN Info 382 [08/2013]

    HOFMANN Info 382 [08/2013]


    Line Width Stablilizer

  • Line width stabilizer - H33-3 - 2-component sprayable cold plastics - Airless (pump) - 98:2 [E12E]

    Line width stabilizer - H33-3 - 2-component sprayable cold plastics - Airless... more

  • Line width stabilizer - low marking speed - low paint pressure - pointer (spray gun) at the top
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    Line width stabilizer - low marking speed - low paint pressure - pointer (spray... more

  • Line width stabilizer - high marking speed – high paint pressure - pointer (spray gun) down
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    Line width stabilizer - high marking speed – high paint pressure - pointer... more

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