Invention Grant
US3790062A Carton construction 失效
纸箱结构

Carton construction
Abstract:
A carton is provided wherein the cover thereof is connected to the tray by an elongated hinge panel. One elongated edge of the panel is connected to the tray and forms a first hinge-line and the opposite elongated edge of the panel is connected to the cover and forms a second hinge-line. The first hinge-line has greater flexibility than the second hinge-line. Complemental means are formed on said tray and hinge panel whereby, upon closing of the carton, the cover and hinge panel initially move as a unit about the first hinge-line as an axis through a predetermined arc and then the cover moves relative to the hinge panel about the second hinge-line as an axis through a further predetermined arc into an overlying closed position with respect to the tray.
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