Gaplast Gmbh

Frank Janssen

Roland Kneer

A stopper which engages a neck of a container. The stopper includes a circular bottom section and a head section which rises above the container and encompasses a slide. The rim of the head section has a maximum diameter that does not exceed the external diameter of the opening of the container. The slide can be pushed against the force of a spring device in one direction and, when released, returns to its retracted initial position as a result of the spring force. Opposing sides of the slide each end in circumferential sections. A first one of the circumferential sections forming an outer surface for receiving a first applied force for advancing the slide and causing the second one of the circumferential sections to protrude from the stopper. The second one of the circumferential sections receiving a second different applied force to remove the stopper from the container.

Stopper for a container

A one-way valve for the recontamination-protected repeated discharge of a flowable material from a container of a preferably reducible volume contains a valve seat which consists of a rigid plastic material and which is arranged in the container neck and comprises a base body which rests on the inner wall of the container neck and contains at least one through hole, and a projection which extends in axial direction of the container neck towards the exit opening. The valve seat has arranged thereabove an elastic seal which comprises an annular section covering the at least one through hole, and a sleeve-like section which surrounds the projection at a radial distance with the exception of its end section which in the closed state of the one-way valve rests in the exit opening on the end section of the projection. A sterilization element of silver or of another metal having an oligodynamic action may be arranged in the intermediate space between the projection of the valve seat and the elastic seal. The application of pressure to the contents of the container has the effect that the annular section of the seal releases the at least one through hole of the valve seat, the end section of the sleeve-like part of the seal exiting from the exit opening and releasing the same. The seal will then return into the initial state. The contents of the container is safely sealed against the ingress of contaminants.

One-way valve for delivering a free-flowing material

The stopper () engages with a ring-shaped neck in a press fit in a container () and has a circular bottom section which seals the container opening, and a head section which rises above the container and encompasses a slide () that extends through the center of the head section, the rim of the head section having a maximum diameter that does not exceed the external diameter of the container opening. The stopper is characterized in that the slide can be pushed against the force of a spring device in one direction over the rim of the container and, when released, returns to its retracted initial position as a result of the spring resistance. The stopper cannot be removed from the container by small children and is therefore considered childproof.

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Bad Bayersoien, Germany

Frank Janssen