초록 ▼

The invention provides a vacuum formed cassette album having front and rear covers connected by a spine. The covers and spine are formed from 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 soft cover sh

The invention provides a vacuum formed cassette album having front and rear covers connected by a spine. The covers and spine are formed from 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 soft cover sheet, formed for example from supple plastic, is sealed to the tray sheet along its edges. At least a pair of parallel, vertically disposed, laterally spaced apart vacuum formed channels are provided in the tray sheet at the edges of the spine and extending to the top and bottom edges of the tray sheet to define fold lines between the spine and the covers. The channel-form hinges are substantially uncompressed. They are of uniform thickness throughout and of the same thickness as the surrounding material of the tray sheet so that when the album is closed the soft cover stock is drawn onto the hinges to provide a smooth contour around the outside edge of the adjacent channel-form hinges which are covered and enclosed by the smoothly contoured cover stock material to present a neat, tailored appearance.

대표청구항 ▼

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 comprisi

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 or similar article to be held in the album, at least 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 the channel-form hinge and each channel has substantially the same thickness as the surrounding material of the tray sheet, the hinge at each edge of the spine comprises at least a pair of parallel adjacent channels, a cover sheet formed from a soft, supple non-self-supporting sheet of plastic material sealed to at least some of the edges of the tray sheet and being unsealed to the tray sheet at 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 also having a uniform thickness throughout the hinge area.