| 摘要 |
A package opening and closing device for a brick-type package is fastened thereon near an opening region defining a pouring region for the product contained in the package. The opening region is provided with prescoring to allow the package to be opened during the first use. The device includes a peripheral ring fastened to the package near the perimeter of the opening region, a lid to seal off the opening region reversibly and being fixed to the peripheral ring, and a lever hinged by a hinge pin in the horizontal plane containing the device to rupture the pouring region along the prescoring. The lever has a first part intended first of all, by the lever effect, to break some of the prescoring to allow effective opening of the package, and then to be held in place inside the package thus opened and a second part, constituting the lever arm acting on the first part, intended, after having acted cooperatively with the first part, to be folded back into its initial position to be parallel and in the plane containing the peripheral ring.
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