Koninklijke Emballage Industrie Van Leer B.v.

Koninklijke Emballage Industrie Van Leer N.v.

Gerrit J Van Keimpema

Edward J Farrington

Cornelis A Ten Bruggencate

David O Loe

Bernard J DeLoos

Andreas N Montijn

Peter Van Gerve

Barrel with flanged body

Container

The invention deals with the butt-welded connection between the endwall and the body of a thermoplastic container. Contrary to the known connection the invention provides the endwall with an axially extending edge, which may form part of a gripping edge and which overlaps the weld, so that the weld beads are hidden, while further the area of transition between the endwall and its edge above the weld has an axial thickness which is in essence the same as the thickness of the endwall and the radial thickness of the axially extending edge of the endwall, so that the material flow of the plastic during molding of the endwall is more even.

Thermoplastic container having end wall butt-welded to body

The invention relates to a container (1) of the type which can be stacked which container has a top surface with a pouring orifice (6) adjacent one edge of the top surface (2) and a handle (9,10) which forms an integral part with the bottom of a recessed portion (8) of the top surface (2,4) and which in its initial or normal starting position extends at a sharp angle with respect to the vertical axis of the container and in a plane which is perpendicular to the plane of symmetry through the vertical axis of the container and the vertical axis of the pouring orifice, which handle may resiliently be bent into an upright gripping position or a downwardly folded storage position in which position it is completely inside the recessed portion.

Container with integral foldable handle

In a device for the extrusion of a tube the extruded tube (2) is guided by a piston (20) placed inside said tube (2) at a distance from the extrusion head (1) the cooling of the extruded tube (2) is improved by means of nozzles (13) which spray water (5) at an angle against the inside of the tube (2) and away from the extrusion head (1), the said water sprays further kept away from the extrusion head by a fan (17) which blows air through the tube (2) away from the head (1) means (14-22) being provided for the supply and discharge of water and air respectively.

Device for the production of a tubular object

Process and device for connecting together an extruded plastic cylindrical vessel body (2) with a plastic lid (1) by means of butt-welding of edges (4,5) heated with a heated plate (12) the said lid being deformed elastically to a larger diameter prior to butt-welding, the device for expanding the lid (1) having a conical expansion element (9), a supporting ring (10) and locking elements (11) holding the expanded lid at a diameter corresponding to the edge diameter of the body (2).

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Woerden, Netherlands

Gerrit J Van Keimpema