Tetra Pak Developpement Sa

Rolf L Ignell

The invention relates to a method for manufacturing a packing container from a seamless tubular blank of plastic material having a wall thickness greater than the wall thickness of the packing container to be produced therefrom. One end of the tubular blank is sealed and an annular edge ferrule is joined to the other end. The tube is heated until softened and then caused to expand in a mold to a predetermined shape.

Method of manufacturing packing containers

The closing of packing containers, e.g. bottles for beer or refreshing beverages, is achieved by means of metal or plastic caps. A cap which is easy to handle and which is reclosable is disclosed. A substantially conventional cap body of flexible plastic material is provided with locking devices in the form of integrated lever arms, which can be maneuvered by means of a ring surrounding the cap body. The locking devices in closed position rest against a bulge located around the neck of the bottle and can be maneuvered with the help of the ring to an open position in which they permit the unhindered removal or replacement of the cap.

Closing arrangement for packing containers

A packing container with an expanded tubular member is disclosed. The member has a central cylindrical portion and dished end portions. A first of said end portions includes an end wall and a second of said end portions includes an edge ferrule.

Packing container

An improved tear-up closing device for a container intended for containing a pressurized liquid (e.g., beer), and intended to form a seal over the opening of the container. The novel closing device comprises two parts, viz., (1) an outer part consisting essentially of a tubular body functioning as a gas-tight closure of the opening of the container, and (2) an inner part which defines a pouring opening of the container, this latter consisting essentially of a sealing body. Said outer and inner parts are joined together along a thin, relatively easily breakable wall.

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Grilly, France

Rolf L Ignell