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TRIZ 40 Principles
Creative tools > TRIZ Contradiction Analysis > Principles
30. Flexible film or thin membranes
Thin films have a number of useful properties, such as low cost, low space, flexibility and usage. They can be used to separate, isolate and protect, such as the ‘cling film’ that is used to wrap food. The film can be bought in a roll, but it can also be created in situ (paint is just such a useful thin film).