(57) The container comprises an envelope (7) of cardboard, corrugated cardboard, plastic
or other material of a shape similar to that of a loose-leaf binder but without mechanical
elements for holding the sheets. The envelope can be extended in a plane in the form
of a rectangular sheet or plate exhibiting a pair of holes (9, 9′ - 10, 10′) at standardized
reciprocal distance, close to each smaller side of the rectangle (AB-CD), a pair of
holes that are coincident, when the container has been folded, to receive known plastic
closing fastener, used with U-shaped metal handle also known, to perform the removal
in block of sheets from the loose-leaf binder and transfer it to the container, closing
the latter.
An upper extension of one face of the container is provided which can be folded like
a cover to protect the contents from dust and an extractable strip is provided, covered
with a hygroscopic substance that absorbs moisture with indication of the degree of
moisture reached and able to be heated to restore its efficiency.
|
|
