In adhesive processes, what term refers to the usable period before hardening starts?

• A. Pot life
• B. Open time
• C. Working time
• D. Cure time

Answer: (C)

In adhesive processes, the usable period before hardening starts is pot life. This is the time after the components are mixed during which the adhesive remains workable enough to mix, apply, and position parts. Once it reaches a specified viscosity or gel point, it can no longer be manipulated effectively, marking the end of pot life. Open time is the window after placement during which bonding can still be achieved before the surface skins over. Cure time is the total period required for the adhesive to reach full strength after application. Working time is sometimes used interchangeably with pot life, but pot life is the standard term for the usable mixing period before curing begins.