Putty clay model
The putty clay model (German: Kitt -Lehm-Modell) is a model of production theory . It assumes that when planning production systems (factory, assembly line, individual machine), there are great choices in terms of their design, but not after they have been completed. Then the production possibilities are either fixed or can only be changed to a comparatively small extent. This is illustrated by the comparison that production systems in the planning phase behave like putty, namely soft and malleable. After that, once the production system has been set up, it behaves more like (baked) clay / loam.
The putty clay model connects various other production models. The engineering production functions only consider the planning phase of production systems and analyze various substitution options , while the activity analysis and the Gutenberg production function, on the other hand, are based on an already existing production system in which production processes can only be partially substituted.