Hinged closure moulded in closed position

Abstract

The invention is directed to a closure moulded in closed position. The closure comprises a body and a lid, which are separated by a circumferential gap. A snap hinged comprising two trapezoid elements, which are connected each by film hinges to the body and the lid, causes a snap action while opening or closing the closure. The closure offers opening angles in the range of 220°.

Description

FIELD OF THE INVENTION [0001] The present invention is directed to a hinged closure moulded in closed position and a container suitable to be used with the hinged closure according to the preamble of the independent claim. BACKGROUND OF THE INVENTION [0002] From the state of the art screw caps e.g. drinking bottles made of polyethylene (PET) and bottles made of glass are know. One disadvantage of these closures is that a lot of physical strength is necessary to open and to close them. Besides this, the known screw cap closures are in general difficult to mould due to the thread on the inside which often causes problems in demoulding. A further disadvantage is that the screw caps can not be operated single handed and after opening the cap has to be held separately. [0003] From EP 1 147 054 a hinged closure with a hinge moulded in closed position is known. Although is this closure shows significant improvements over the closures known from the state of the art, due to the arrangement ...

AI Technical Summary

Benefits of technology

[0019] At presence no hinged closures are available for drinking bottles for carbonized beverages subjected to increased internal pressure. Specific embodiments of the herein disclosed invention offer the opportunity to provide a closure which is sealed at increased pressure and which is provided with a latching mechanism offering the opportunity to lock the closure repeatedly pressure tight The latching mechanism is preferably equipped with a temper evidence mean to prevent unforeseen and indicate initial opening of the packaging. A preferred temper evidence mean is a at least one thin moulded bridge connecting the lid and the body directly or indirectly. This bridge is made such that it is destroyed while first opening

Problems solved by technology

This aspect has to be considered in mould design, because closures having a cylindrical side wall often have undercuts which are difficult to demould.

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