Modelling of hot pressing of paper

A component with an unlock mechanism is unlockably locked with respect to another component by a resilient snap tooth engaging in a hole defined in the other component. To unlock the components from each other, the unlock mechanism is pulled between the components to force the snap tooth out of the hole against its resiliency. The unlock mechanism has a slant surface that slides against a slant surface of the snap tooth to displace the snap tooth out of the hole in response to the movement of the unlock mechanism.