| 摘要 |
An adjustable book cover ( 10 ) consisting of a unitary hexagonal sheet of stretchable fabric ( 16 ) that is preferably coated with an elastomeric polyurethane resin ( 15 ). Interstices ( 19 ) of the fabric ( 16 ) are filled with at least a single layer of polyurethane resin ( 15 ), creating an impermeable waterproof barrier while maintaining the elastic functionality of the book cover ( 10 ). The hexagonal sheet has flap portions defined by fold lines ( 44,46,48 ) that delineate a laterally formed rectangle within the fabric polygon. Extended edges of the upper and lower shaped flap portions are each bisected by a slot ( 41 ) of predetermined depth, thus forming an access aperture ( 21 ) for the covers of a book when selected flap portions of the hexagon are secured together.
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