Abstract: A container assembly comprising a container of plastic material adapted for receiving a liquid and including a bottom of convex shape in the central portion of which the material is thicker and less oriented than in the outer portion and the side wall. A stabilizing foot supports the container and for this purposes is welded to the container in the central portion of the bottom thereof whereat the material is less oriented. The foot includes an annular projection extending downwardly from the portion welded to the container. The projection is hollow and forms an annular support foot including a rim which extends upwardly from the projection into smooth peripheral sliding engagement with the bottom of the container. The support foot is welded to the container while the middle portion of the projection is held against the middle portion of the bottom of the container.

Abstract: A method of producing a container of plastic material from a blank comprising a plurality of layers in tubular form in which the inner layer consists of new material and the adjacent layer consists of previously used plastic material which has been recycled for re-use. One end of the blank is created and closed on a bowl-shaped support and thereat the inner layer penetrates to the outer surface of the blank to form a region which consists completely of new and not previously used material. The blank is then blow-molded to form the container.

Abstract: A metal can top rests on a tool seat for the purpose of riveting a pull-up ring to the metal can top. Riveting takes place with the aid of a dolly which moves back and forth relative to the tool seat. Transmitters are arranged in the tool seat to check that no foreign objects are present in it. Transmitters sense the movement of the dolly past a reference level as it moves towards the tool seat. In the riveting position the dolly presses the metal can top and associated pull-up ring against the tool seat, whereby the pull-up ring actuates a sensing pin and moves it to an indicating position which is sensed by a transmitter. The signals from the respective transmitters are received by a delay and control device.

Abstract: A method of manufacturing a container with a lid comprising folding a blank of material to form an inner lid element having a flat bottom and a frame along at least two sides of said bottom, placing the inner lid element into an open end of a filled container with the bottom of the inner lid element facing into the container, placing a blank of material for an outer lid element against the frame of the lid element and joining the outer lid element to the inner lid element.

Abstract: A packing comprising an outer cover constituted by a relatively rigid material and an inner container of relatively flexible material placed within the outer cover. A perimetral rim portion is formed on the outer cover at one end with a central opening within the rim. A plate is disposed within the rim to define a narrow gap therewith extending around the periphery of the plate. The plate is constituted of the same material as the outer cover and is affixed at its inner surface to the outer surface of the inner container by glue or other suitable expedient. The cover can be removed by cutting the inner container at the gap to expose the contents in the inner container.

Abstract: An openable and closable lid is formed at the open end of a container which has a peripheral flange extending inwardly within the container in a plane beneath the open end. The lid comprises a first lid element removably fitted within the open end of the container above the peripheral flange and a second lid element secured to the first lid element as a unit. The first lid element can be formed as an open box with a frame and the second lid element has flaps which are secured to the side walls of the container. By separating one of the flaps from the container, a hinged connection can be formed for the lid unit to the container.

Abstract: A process of producing a reinforced container of thermoplastic material in which a blank is pre-heated from an amorphous structure and finished in a subsequent blowing process with biaxial stretching, wherein it is provided simultaneously with internal reinforcing ribs.

Abstract: A conveyor for transport of bags of refuse comprising a feed tube in which bags of refuse are introduced and transported from one end to the other and a feed screw in the tube for driving the bags of refuse through the tube. The feed screw is constructed as a helix forming successive spaced flanges and the pitch of the helix is such that the space between successive flanges will accommodate a bag of refuse of predetermined maximum overall size. The feed screw is eccentrically journaled in the feed tube and is in tangential contact at the bottom thereof. A charging device for introducing the bags of refuse into the feed tube comprises a vertical tube with an inlet unit which limits the size of the bag of refuse which can be introduced to that which can be accommodated between the flanges of the helix.

Abstract: A container assembly comprising a container of plastic material adapted for receiving a liquid and including a bottom of convex shape in the central portion of which the material is highly oriented. A stabilizing foot supports the container and for this purposes is welded to the container in the central portion of the bottom thereof whereat the material is highly oriented. The foot includes an annular projection extending downwardly from the portion welded to the container. The projection is hollow and forms an annular support foot including a rim which extends upwardly from the projection into smooth peripheral sliding engagement with the bottom of the container. The support foot is welded to the container while the middle portion of the projection is held against the middle portion of the bottom of the container.

Abstract: A packing comprising an outer cover constituted by a relatively rigid material and an inner container of relatively flexible material placed within the outer cover. A perimetral rim portion is formed on the outer cover at one end with a central opening within the rim. A disc is disposed within the rim to define a narrow gap therewith extending around the periphery of the disc. The disc is constituted of the same material as the outer cover and is affixed at its inner surface to the outer surface of the inner container by glue or other suitable expedient. The cover can be removed by cutting the inner container at the gap to expose the contents in the inner container or a tear-off tape can be provided on the inner container at the gap so that when the tear-off tape is removed the cover and the portion of the inner container affixed thereto are removable.

Abstract: A container assembly comprising a container of plastic material adapted for receiving a liquid and including a bottom of convex shape in the central portion of which the material is highly oriented. A stabilizing foot supports the container and for this purpose is welded to the container in the central portion of the bottom thereof whereat the material is highly oriented. The foot includes an annular projection extending downwardly from the portion welded to the container. The projection is hollow and forms an annular support foot including a rim which extends upwardly from the projection into smooth peripheral sliding engagement with the bottom of the container. The support foot is welded to the container while the middle portion of the projection is held against the middle portion of the bottom of the container.