Hot tack is a term relating to the ability of hot melt adhesives (HMA) to hold substrates together prior to solidification or set.
…Most adhesive formulators must perform lots of trial and error evaluations in order to qualitatively determine the strength of hot tack of HMAs on specific substrates. The test result is greatly temperature, speed, and substrate dependent. The reported test result is normally subjective but not accurate. To precisely compare hot tack performances of different HMAs, it may be more effective to carry out rheological evaluations based on a temperature or time scan for an adhesive from molten stage to solid stage. Read Article >>
Hot tack of hot melt adhesives (HMA) - by Pierce Covert, Glue Machinery Corporation
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