The salt bath is used to heat and vulcanize sealing profiles made of compact, microporous and mainly peroxide-cured rubber compounds with and without metal carrier. Single and multiple profiles can be produced.

All functional groups are of completely modular design. This allows a line equipped with a controlled profile haul-off to be structured specifically for the customer's need or the process requirement at low cost. Because of the adjustable and tiltable infeed conveyor, it is possible to change the extrusion dies uninterrupted and to thread the profiles over the entire length of the line with the pneumatic opening of the lower door segments.

In case of combined spray/immersion lines the profile surfaces and profile lips are sprayed thoroughly with salt already at the beginning of the treatment section. This ensures that the vulcanization process begins evenly at the sensitive sections. The immersion roller sections are divided into two or more section with separate drives guarantee a safe transportation of the profiles and to compensate for profile elongation.

Knock rollers and hot-air nozzles ensure that the salt is withheld at the end of the immersion section. They thoroughly pre-clean the profiles and keep the salt discharge to a minimum. The remaining salt is removed in the washing station that follows. The washing water containing the salt is returned via a salt recovery system. This combined device for washing, cooling and recycling makes production environmentally friendly in the fullest sense.

TROESTER salt bath systems meet the general demands for economical and environmentally friendly operation in special ways: The use of natural gas for heating the salt melt and the optimization of the thermal economy keep the energy costs low. Integrated salt recovery systems as well as re-cooling systems largely avoid the discharge of salt during the washing and cooling processes. 

• all function groups have completely modular design;
• divided hinge segments and flexible seals reduce heat loss;
• controlled profile haul-off and uninterrupted exchange of the extrusion dies with adjustable and tiltable infeed conveyor;
• uninterrupted profile threading over the entire length of the line through pneumatic opening of the lower door segments;
• even vulcanization of the profile surfaces and profile lips through thorough salt spraying at the beginning of the treatment section;
• knock rollers and hot-air nozzles thoroughly pre-clean the profiles and keep salt retention to a minimum.