| 摘要 |
Document file which can be folded flat and has an adjustable volume, characterized in that it comprises a pair of flat elements, separated from each other, designed to make up an internal component (2) and an external component (3) of the file (1), the said elements having respective flaps (6-6' and 7-7') which, once they have been folded at right angles, form a first internal half-shell and a second external half-shell, or a male and female part respectively, which can be inserted one inside the other to form a boxlike containing structure which can be closed on itself; the flaps (6-6' and 7-7') which are provided on at least three sides of the internal and external components having complementary engagement elements (9, 10) positioned so as to adjust the connection of the flaps (6-6' and 7-7'), for example in a stepped or similar manner, in order to define correspondingly adjustable volumes of the file (1) in its assembled and ready-to-use state. Furthermore, the female external half-shell (3) is fitted with identification accessories (16). In order to be able to fold the file flat, so that it can be packed, stored and transported easily and conveniently, the flaps (7-7') forming the side opposite the opening include releasable closure elements (12, 13).
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