Bonding Agents are key additives in the production of high-quality PVC-coated textiles used in numerous applications, such as truck tarpaulins, tents & awnings, textile architecture, billboards & screens, conveyer belts, various inflatables, protective clothing and many others.
As opposed to many natural fibers, synthetic fibers such as polyester or polyamide are difficult substrates to achieve adequate adhesion levels with PVC-based coatings.
Added to PVC plastisol in the last mixing step shortly before processing, our liquid isocyanate-reactive Bonding Agents significantly improve adhesion of the PVC coatings to polyester- and polyamide-based fabrics, thus enabling the production of a durable coated textile in the first place.
Our product range includes both classic solvent- and phthalate-based as well as non-phthalate liquid carriers well-known to the PVC industry.
Bonding Agents are essential to achieve required adhesion levels!
PVC-coated textiles are used in various industries & applications
Frequently Asked Questions
Here we answer the most frequently asked question regarding bonding agents. For more detailed inquiries, please contact our technical representatives (contact details below)Bonding agents are used to improve bond strength / adhesion of a material to a substrate when its native adhesion is too low.
They can be stand-alone (e. g. adhesive, glue or a primer) or be of an additive type as in case of LANXESS bonding agents which are designed to be applied as part of a liquid PVC plastisol.
LANXESS bonding agents are designed to be used with PVC plastisol coatings applied to technical textiles made of synthetic fibers, such as polyester or polyamide.
As opposed to many natural fibers such as cotton, synthetic fibers typically have a less open structure which makes diffusion of plastisol more difficult and thus mechanical bonding between these two materials much less pronounced.
LANXESS bonding agents improve the bond strength by chemically bonding to the functional groups available on the surface of synthetic fabrics while their polymeric nature provide the mechanical connection to the cured PVC layer.
LANXESS bonding agents are typically mixed with PVC plastisol and applied only in the first (bond) layer at room or close to room temperature by doctor blade coating or similar processes. After thermal pre-gelation a further (top) plastisol layer without a bonding agent is typically applied on top of the non-fully cured bond layer, followed by the final gelation in an oven.
LANXESS bonding agents are typically NOT compatible with standard extrusion processes.
As from 24 August 2023 adequate training is required in European Union before industrial or professional use according to Commission Regulation (EU) 2020/1149 of 3 August 2020 amending Annex XVII to Regulation (EC) No 1907/2006 of the European Parliament and of the Council concerning the Registration, Evaluation, Authorisation and Restriction of Chemicals (REACH) as regards diisocyanates.
Consult safeusediisocyanates.eu for information on the training and certification process.