unwanted reaction. If a reactive PUR hot melt adhesive has been processed, the system should be cleaned before downtimes. Jowat supplies a range of flushing agents [...] to use a sufficient amount of flushing agent. Effect of viscosity on the purging process ©Jowat SE Apart from the flow velocity, viscosity also plays a role in [...] thermoplastic hot melt adhesives are processed, a mechanical cleaning is usually enough. If the adhesive processed is a PUR hot melt, the roller pan should be emptied
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