Knowledge · Polyurea

Krypton ProLine AB 70A Plus: Flexible Polyurea Coating for Foam and Design

Krypton ProLine AB 70A Plus is a low-viscosity, highly elastic polyurea system, hot-sprayed with plural-component equipment at 1:1 by volume and designed for industrial products – a flexible polyurea coating for foam, design parts and floors.

01 · Uses

Uses of a flexible polyurea coating for foam

  • Coating of foam furniture and cut 3D foam shapes.
  • Industrial design.
  • Flexible polyurea floors.
  • Flexible protective coating; an aliphatic polyurethane topcoat can be added for UV and colour stability.

For coated EPS and foam shapes, see ProLine on outdoor EPS figures.

Faceted teal EPS sculpture in woodland, glossy ProLine 60 shell reflecting the forest

02 · Application

Application of Krypton ProLine AB 70A Plus

Mix ratio is A=1 : B=1.1 by weight (1:1 by volume). Gel time is 12 s at 25 °C and the surface is tack-free in 20 s.

Spray at 1–2 kg/m², with component A at 70 °C, component B at 75 °C and the hose at 70 °C, at 150 bar. More than 90% of the final properties are reached after one day.

03 · Technical data

Krypton ProLine AB 70A Plus technical data (TDS values)

Elongation at break

900%

Tensile strength

9 MPa

Shore hardness

67A

Gel time at 25 °C

12 s

Technical data

  • Hardness (Shore): 67A (ISO 868)
  • Elongation at break: 900%
  • Tensile strength: 9 MPa (UNE EN ISO 527-1/3)
  • Shore A build-up: 53A after 45 min, 56A after 3 h, 67A after 1 day

04 · Performance

Krypton ProLine AB 70A Plus performance

Hardness is 67A (ISO 868), elongation at break 900% and tensile strength 9 MPa (UNE EN ISO 527-1/3). It forms a continuous, flexible membrane with high abrasion resistance and mechanical strength.

Application data

  • Mix ratio: A=1, B=1.1 by weight; A=1, B=1 by volume
  • Gel time (A+B, 20 g): 12 s at 25 °C; tack-free in 20 s; handling and stacking after 3 h
  • Recommended temperatures: component A 70 °C, component B 75 °C, hose 70 °C
  • Pressure: 150 bar
  • Spray rate: 1–2 kg/m²
  • Air temperature: 10–40 °C, relative humidity below 70%

05 · FAQ

Krypton ProLine AB 70A Plus: frequently asked questions

Coating foam furniture and cut 3D foam shapes, industrial design parts and flexible polyurea floors.

Elongation at break is 900% with a final hardness of 67A.

It is tack-free in 20 seconds and can be handled and stacked after 3 hours.

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