| 摘要 |
A record sleeve is provided with spines on at least the closed edges of the sleeve adjacent the open edge and a closure for closing the open sleeve edge, wherein the closure is formed by a flap folded on itself to provide a double thickness spine for spanning the open sleeve edge, a double thickness closure flap for underlying the other panel when the closure is in closed position and a marginal flap overlying the inner surface of the one panel adjacent the fourth edge thereof, the two thicknesses of the closure flap being adhered together and the two thicknesses of the spine and the marginal flap being relatively movable.
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