Cassette album with channel-form hinges and method

A book-style cassette album comprising, front and rear covers connected by a spine, said album including a stiff, self-supporting thermoformed tray sheet extending the height and breadth of both the front and rear covers and across the spine area, a pair of parallel vertically disposed laterally spaced apart channel-form hinges within the tray sheet, one such hinge at each edge of the spine and extending proximate to the top and bottom edges of the tray sheet to define fold lines between the spine and each of the covers, each of said channel-form hinges being uncompressed such that the tray sheet is of substantially uniform thickness throughout and each channel has substantially the same thickness as the surrounding material of the tray sheet, a cover sheet formed from a soft, supple nonself-supporting sheet of plastic material sealed to at least some of the edges of the tray sheet and being unsealed to the tray sheet along the channel-form hinges, the supple cover stock conforming to the underlying hinges which act as a stiff framework over which the cover sheet extends when the album is closed to present an attractive tailored appearance along each hinge, the tray sheet has a second pocket, the first pocket is in the front cover and the second such pocket is in the rear cover, said pockets having first and second inwardly deflected side walls, respectively, the first side wall has finger-access recesses therein and the second side wall has outwardly projecting tabs that extend into the recesses in said first side wall when the album is closed to strengthen the album against buckling when the covers of the album are pressed toward one another.

A book-style cassette album comprising, front and rear covers connected by a spine, said album including a stiff, self-supporting thermoformed tray sheet extending the height and breadth of both the front and rear covers and across the spine area, both of the covers including a tray comprising a portion of the tray sheet having inwardly deflected first and second side walls at least in part surrounding first and second pockets adapted to receive a cassette to be held in the album, a pair of parallel vertically disposed laterally spaced apart channel-form hinges within the tray sheet, one such hinge at each edge of the spine and extending proximate to the top and bottom edges of the tray sheet to define fold lines between the spine and each of the covers, each of said channel-form hinges being uncompressed such that the tray sheet is of substantially uniform thickness throughout and each channel has substantially the same thickness as the surrounding material of the tray sheet, said tray sheet having an elevated plateau defining a rectangular frame located in a spine portion of the tray sheet to assist in keeping the spine flat, a cover sheet formed from a soft, supple nonself-supporting sheet of plastic material sealed to at least some of the edges of the tray sheet and being unsealed to the tray sheet along the channel-form hinges, the supple cover stock conforming to the underlying hinges which act as a stiff framework over which the cover sheet extends when the album is closed to present an attractive tailored appearance along each hinge, the first side wall has finger-access recesses therein and the second side wall has outwardly projecting tabs that extend into the recesses in said first side wall when the album is in a closed position to strengthen the album against buckling when the covers of the album are pressed toward one another.

A book-style cassette album comprising, front and rear covers connected by a spine, said album including a stiff, self-supporting thermoformed tray sheet extending the height and breadth of both the front and rear covers and across the spine area, at least one of the covers including a tray comprising a portion of the tray sheet having an inwardly deflected wall at least in part surrounding a central pocket adapted to receive a cassette to be held in the album, a pair of parallel vertically disposed laterally spaced apart channel-form hinges within the tray sheet, one such hinge at each edge of the spine and extending proximate to the top and bottom edges of the tray sheet to define fold lines between the spine and each of the covers, each of said channel-form hinges being uncompressed such that the tray sheet is of substantially uniform thickness throughout and each channel has substantially the same thickness as the surrounding material of the tray sheet, said tray sheet having an elevated plateau defining an upwardly deflected, downwardly opening rectangular frame located in a spine portion of the tray sheet including four intersecting side walls to assist in keeping the spine flat, a cover sheet formed from a soft, supple nonself-supporting sheet of plastic material sealed to at least some of the edges of the tray sheet and being unsealed to the tray sheet along the channel-form hinges, the supple cover stock conforming to the underlying hinges which act as a stiff framework over which the cover sheet extends when the album is closed to present an attractive tailored appearance along each hinge, the cover sheet is sealed to the tray sheet by means of a peripheral seal along at least one end of the spine including a tapering feather seal aligned with the spine area between the hinges and the beaded seal on each side of the hinges in the area of the front and rear covers to improve the crack resistance of the album at the adjacent ends of the hinges.