Application Description

The new generation of PO hot melts for the assembly of core packages

Core assembly adhesives have to meet very complex requirements. They need to provide a long open time, a fast build-up of cohesion (handling strength), high heat resistance, and excellent process reliability. More and more frequently, core packages are assembled with thermoplastic polyolefin (PO) hot melts. Compared to standard polyamide (PA) hot melts which have been the standard product for this application for many years, PO hot melt adhesives are characterised by significantly better oxidation stability. This leads to substantially reduced production downtimes due to maintenance and cleaning work or malfunctions, and increases the reliability of processes.

Product Information


Base Viscosity [mPas] /
Temperature [°C]
Temperature [°C]
Open Time [s] /
Temperature [°C] /
mm Bead
Application Download
data sheet (PDF)
Jowat-Toptherm® 230.70 PO Hot Melt Adhesive 1520 ± 430 / 190 180 - 200 12 ± 3 / 190 / 2 Assembly bonding of sand cores in casting operations. de en fr
Jowat-Toptherm® 238.97 PO Hot Melt Adhesive 1100 ± 300 / 200 180 - 200 15 ± 2 / 190 / 2 Assembly bonding of sand cores in casting operations. de en fr

The products listed only represent a limited selection of the available product portfolio. Product availability might differ by region. The technical data, characteristics and field of application provided in the table outline the differences between the individual adhesives of the product portfolio. Our Application Technology Department and our Sales Representatives are on hand to provide advice and support you finding the best adhesive for your particular application.

Note: The information on this page is based on test results from our laboratories as well as on experience gained in the field, and does in no way constitute any guarantee of properties. Due to the wide range of different applications, substrates, and processing methods beyond our control, no liability may be derived from these indications nor from the information provided by our free technical advisory service. Customer trials under everyday conditions, testing for suitability at normal processing conditions, and appropriate fit-for-purpose testing are absolutely necessary. For the specifications as well as further information, please refer to the latest technical data sheets.


Jowatherm® PO 238.97.PDF