Ricardo, estou partindo do pressuposto que ocorreu um typo, e que o certo seria "curl level".

English term (edited): curl level

Curl. Film curl is defined as the departure from flatness of photographic film (Figure 12). Curl toward the emulsion is called positive while curl away from the emulsion is termed negative. Although the curl level is established during manufacture, it is influenced by the relative humidity during use or storage, processing and drying temperatures, and the winding configuration.

At low relative humidities, the emulsion layer contracts more than the base, generally producing positive curl. As the relative humidity increases, the emulsion layer expands relative to the support, producing negative curl.

Film wound in rolls tends to assume the lengthwise curl conforming to the curve of the roll.


c) Abaulamento

O abaulamento é a condição na qual é impossível o filme manter-se reto pelo fato de algumas partes haverem encolhido mais do que outras. As duas formas de abaulamento são:

- em arco, quando as bordas encolheram mais do que o meio; e

- em ondas, quando o meio encolheu mais do que as bordas.