Water-based PU release agent for flexible foams: high performance and low VOC content

Release agent 8670/31 is an emulsion release agent (wax and oil-based) intended for demolding flexible and rigid PUR foams, particularly in the manufacture of automotive seats, headrests, armrests, and technical flexible foam components.
Its hybrid formulation contains approximately 10% solvents (VOCs), combining:
Effective mold/foam separation
Process stability
Significant reduction in solvent load compared to traditional release agents
Ready to use, it can be easily integrated into automated spraying systems compatible with high-speed production lines.

In the automotive sector, polyurethane foam processors are looking for:

• Clean demolding without tearing or surface defects
• Consistent visual quality of the foam
• Controlled consumption
• Perfect compatibility with automation

The 8670/31 ensures reliable release with a dry feel (“dry grip”), reducing the risk of secondary sticking or aesthetic defects.

The recommended parameters (material pressure 0.3-0.5 bar / process pressure 2-3 bar) allow for controlled and repeatable application, which is essential in automotive production.

Used on molds at 50-60°C, it guarantees effective separation while preserving the integrity of the polyurethane surface.

The predominantly water-based release agent 8670/31 (≈79.8% water), is part of Keck Chimie’s water-based industrial chemistry strategy.
Objectives:

• Reduce emissions in the workshop
• Improve working conditions
• Support the transition to lower-impact formulations.
• Reserved for professional use, it meets industrial standards while complying with regulatory requirements.

Keck Chimie’s teams will assist you in evaluating and optimizing your polyurethane foam release process.

Contact us to test 8670/31 on your molds and injection lines: contact a manufacturer of polyurethane release agents.