Submit
Processing technology

Hot-melt adhesive systems with rapid bond strength

Hot-melt adhesives (non-reactive or reactive) are solid at room temperature and liquefy when heated. They are applied at high temperatures and during the cooling process they solidify and crystallize to produce an adhesive bond which rapidly develops a considerable bond strength. In the case of reactive polyurethane hot-melt adhesives, chemical bonds are additionally formed.
Contact expert

Featured Brands

Baycoll®
Polyols for high-performance 2K solventborne adhesives
Desmodur®
Polyisocyanates for a wide range of PU foams, coatings and adhesives
Desmomelt® U
Desmomelt® U aliphatic polyurethane powders for new adhesive raw materials
Desmophen®
A wide range of polyols for high-performance polyurethane applications
Non-reactive polyurethane hot melts based on the Desmomelt® range can be processed as a fleece, a foil or in powder form. They are primarily used in the footwear and textile industries. Reactive polyurethane hot melts are produced by reacting polyols with isocyanates (predominantly monomeric MDI), leading to NCO prepolymers with a typical residual NCO content of 2–5%. After hot application in the molten stage, initial bond strength is created by solidification and crystallization. The free NCO groups then start to crosslink with moisture from ambient air, which results in an excellent heat and chemical resistance of the bond line.

Get in touch with our experts!

Get in touch
Common raw materials for reactive polyurethane hot melts are Desmodur® monomer MDI grades, Baycoll® polyesters, Desmophen® polyesters and Desmophen® polyethers.  
Typical applications include adhesives for wood and furniture, automotive and transportation solutions, bookbinding, textiles, footwear and electronics.

Contact us

How can we contact you?

{"FieldName":"","Endpoint":"https://covestro-prod-ffm.apimanagement.eu2.hana.ondemand.com/hybrispcm/products_typeahead?identKey=GB6LiyNSG0YYxXXEpmO8EyoUdFLN0Roi&max=5&lang=en&extended=true","Language":"fr","PermissionQuery":"","BrandLabel":"Brand","ProductLabel":"Product","NoResultLabel":"No results for","MaxItem":10}
Request a sample
formVersion
{"FieldName":"productName","Endpoint":"https://covestro-prod-ffm.apimanagement.eu2.hana.ondemand.com/hybrispcm/products_typeahead?identKey=GB6LiyNSG0YYxXXEpmO8EyoUdFLN0Roi&max=5&lang=en&extended=true","Language":"fr","PermissionQuery":"","BrandLabel":"Brand","ProductLabel":"Product","NoResultLabel":"No results for","MaxItem":10}

Request a sample

Hello! Thanks for reaching out to us.
We have received your request and one of our experts will be in touch with you as soon as possible.
In the meantime, feel free to discover our innovative material solutions!

Speak to you soon,
Your Covestro Team

Request a quote
formVersion
{"FieldName":"productName","Endpoint":"https://covestro-prod-ffm.apimanagement.eu2.hana.ondemand.com/hybrispcm/products_typeahead?identKey=GB6LiyNSG0YYxXXEpmO8EyoUdFLN0Roi&max=5&lang=en&extended=true","Language":"fr","PermissionQuery":"","BrandLabel":"Brand","ProductLabel":"Product","NoResultLabel":"No results for","MaxItem":10}

Request a quote

Hello! Thanks for reaching out to us.
We have received your request and one of our experts will be in touch with you as soon as possible.
In the meantime, feel free to discover our innovative material solutions!

Speak to you soon,
Your Covestro Team

Compare