ASTM D1146 Standard Test Method for Blocking Point of Potentially Adhesive Layers
Some potentially sticky materials are both thermoplastic and hygroscopic, ASTM D1146 test method allows for the estimation of both thermoplastic and hygroscopic blocking on the same material. Because certain restrictions are more strict than others, there are 2 varying degrees of blocking: (i) first degree and (ii) second degree blocking. (1) Cohesive blocking and (2) Adhesive blocking are the two types of blocking methods. Using the adhesive blocking test method, we are able to estimate potential adhesive layer properties.
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