Industry News

Covestro Presents New PUD for Enhanced Wet Bonding Properties at FEICA 2019

Published on 2019-09-12. Author : SpecialChem

FEICA-PUD-covestro-WB Dr Christoph Thiebes, Senior Manager, from Covestro is presenting at FEICA 2019, about the polyurethane dispersions and setting new standards in heat activation and wet bonding.

PUD for Waterborne Adhesives in Industrial Applications

Polyurethane dispersions (PUD) have established their position as a raw material for waterborne adhesives in industrial applications. Due to their semi-crystalline polymer structure with sharp melting behavior they enable heat activation bonding in efficient industrial manufacturing processes with high adhesive performance on a broad variety of substrates.

In this presentation a new type of PUD allowing even better durability especially in hot and humid climate conditions is presented. This opens the path into new sustainable solutions for demanding bonding applications, e.g. automotive interior trim lamination or 3D lamination for kitchen and bathrooms cabinets.

New PUD for Immediate Wet Tack

Although solvent-borne adhesives are still widely used in the mattress and soft furniture industry, there is a growing demand for waterborne solutions due to changing legal requirements and workplace hygiene considerations. Furthermore, some eco-labels are focusing their attention on organochlorine, pushing the industry to look for alternative solutions.

Covestro presents a new polyurethane dispersion that allows the creation of adhesives with excellent wet bonding properties, which is usually a domain of other types of polymers, such as polychloroprene. For foam-to-foam (e.g. mattresses) and foam-to-wood (e.g. upholstery furniture) adhesives the new PUD provides immediate wet tack, early wet strength and a long open time in common spray coagulation application, combined with good heat-resistance and a non-yellowing bondline.

Source: FEICA 2019
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