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Folio with three-part stiffener and viewing pockets
Folio with three-part stiffener and viewing pockets
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机译:带有三件式加固件和观察袋的作品集
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摘要
A folder or loose leaf type binder has a novel spine construction using a rigid sheet with a pair of spaced apart creases to form a spine stiffener with adjacent cover stiffeners. Since the cover stiffeners extend only partially into the cover portions of the folder, a natural break occurs in each of the two covers which, in turn, makes the folder easier to handle, prevents the covers from closing inadvertently, and allows the pages of the folder to lay at a preferred attitude and angle.
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