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Jowat Unveils PUR Hot Melt Adhesive for Window Profile Wrapping

Published on 2016-10-13. Author : SpecialChem

Detmold – Jowat has developed Jowatherm-Reaktant® 604.25, a new PUR hot melt adhesive. The product shows superior bonding results in window profile wrapping, and provides reliable processes and high initial strength in combination with new primers from Jowat.


Jowatherm-Reaktant® 604.25
Jowatherm-Reaktant® 604.25
New high-performance PUR hot melt adhesive for window profile wrapping: Jowatherm-Reaktant® 604.25

For many years, the tried and proven adhesive systems from Jowat consisting of powerful PUR hot melts and primers have met the high demands in window profile wrapping.

Development of Jowatherm-Reaktant® 604.25



Outstanding wetting properties combined with high initial strength and a fast crosslinking of the adhesive facilitate shorter process cycles and increase efficiency. The growing variety of substrates and decor materials as well as bigger variations in the surface tension of the foils required a new adhesive. Characterized by a superior range of adhesion, Jowatherm-Reaktant® 604.25 is the logical development of this product group.

The significantly higher initial strength due to a considerably shorter open time of the new PUR hot melt ensures reliable processes and a high quality of the end product – even at higher line speeds and with rigid foils.

Applications of Jowatherm-Reaktant® 604.25


It plays a major role in maximizing the efficiency of laminating processes.
In addition, the adhesive can be molten and processed at lower a temperature, which reduces the thermal stress on the adhesive as well as on the thermoplastic foil, and facilitates more reliable processes of a higher quality.
Jowatherm-Reaktant® 604.25 is certified according to RAL-GZ 716 for the use in combination with conventional as well as VOC-reduced, NEP-free primers.

Additional benefits



When processed together with the latest generation of Jowat primers, the new high-performance adhesive provides additional benefits: The interaction between the primer and the adhesive ensures an accelerated crosslinking of the PUR adhesive during the laminating process of the PVC window profile. Jowatherm-Reaktant® 604.25 is therefore the optimal adhesive to be used in combination with these non-hazardous, modern VOC-reduced, NEP-free primers.

About Jowat

Headquarters in Detmold, Jowat is one of the leading suppliers of industrial adhesives mainly used in woodworking and furniture manufacture, in the paper and packaging industry, for graphic arts, in the textile, automotive as well as in the electrical industry. The company was founded in 1919 and has manufacturing sites in Germany in Detmold and Elsteraue, plus four other producing subsidiaries, Jowat Corporation in the USA, Jowat Swiss AG, Jowat Manufacturing in Malaysia, and the Jowat Universal Adhesives Australia Pty. Ltd. in Australia.

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Source: Jowat
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