Abstract: A device for heating plastic plates using contact heat and hot gases which are supplied to the plastic plate to be heated by carrier plates is provided. Therein, two carrier plates are movable relative to each other vertically with respect to their common contact surface. Gas distribution conduits also open in the contact surface. In order that the plastic plates which are to be heated can be removed properly from the carrier plates, so that damage to the heating device is avoided, each contact surface of both carrier plates is surrounded by a frame-like, closed outer edge without mouth openings for the gas distributions conduits.

Abstract: Flexible, creased material in sheet or web form for use in the manufacture of liquid-tight packing containers of good dimensional rigidity includes one or more base layers laminated to one another. The base layer is a mineral-filled thermoplastics material comprising between 50 and 80% calculated on the total weight of the mixture, of an inorganic, particulate mineral filler. The thermoplastic material is chosen among propylene-based polymers with a melt index of between 0.5 and 5 according to ASTM (2.16 kg, 230.degree. C.) and the base layer or base layers are provided with a pattern of crease lines which have been formed by plastic deformation in connection with or immediately after the extrusion of the base layer or base layers.

Abstract: A packing container is disclosed in which an end wall of the packing container has an opening formed therein for emptying the contents of the container. The opening in the end wall is covered by a cover strip which is detachably secured to the end wall. The cover strip and the end wall are formed of a plastic coated metallic material and the cover strip is secured to the end wall along a sealing joint that surrounds the opening. The cover strip is secured to the end wall by surface fusion.

Abstract: Described is a pouring device of plastic material for fitting to the hole of a flowing medium pack, wherein the pouring device (10) has a portion (20) which is openable by means of a tearing line (25). So that packs of widely different configurations and consisting of a wide range of different materials can be produced in such a way as to be sealed and easily openable, the pouring device (10) has at least a bottom portion (20) and a closure portion (21) which are pivotally movably connected together by way of a hinge (22), wherein the tearing line (25) is disposed in the bottom portion (20).The process for the production of such a pouring device is characterised in that a series of blanks which are arranged in succession in a flat condition and which are in line-wise contact with each other are formed from an endless web of plastic material which can be subjected to deep drawing, and rolled up to form a coil, and the blanks are separated off prior to fitting to the hole in the pack.

Abstract: In an opening device for tetrahedral-shaped or parallel piped-shaped packaging containers, a strip of packaging material is provided with tear perforation lines substantially parallel to the longitudinal direction of the strip of material. The tear perforation lines intersecting a transverse seam on the packaging material are located relative to one another such that they converge at a point in a finished packaging container.

Abstract: A method and an apparatus for marshalling objects from one ingoing conveyor to two outgoing conveyors is disclosed. Counting gaps are created by a belt brake operating at a slower speed than the ingoing conveyor. The counting gaps are registered by a pair of photocells, and two gates are maneuvered by a control unit. The gate downstream of the ingoing conveyor is of the single type, and the gate downstream of both of the outgoing conveyors is of the double type. The gates are mechanically interconnected and rotate towards one another in order to marshall the objects onto one or the other of the outgoing conveyors.

Abstract: An apparatus for folding an edge (11) of a continuous web (10) is disclosed, wherein the continuous web (10) is held against a belt (1) which is twisted through substantially 180.degree. between two wheels (2, 3) to fold over the edge (11) during the twisting action. The belt (1), which is endless, runs over two other wheels (4, 5) in order to return to the wheels (2, 3).

Abstract: A regulator cone of substantially cylindrical form is disclosed with four generally V-shaped grooves on its outer circumferential surface. Two of the grooves define primary grooves that extend along the entire active length of the regulator cone. The other two grooves define secondary grooves that extend along the portion of the active length of the regulator cone where the primary grooves have their largest cross-sectional area.

Abstract: Forming devices in packaging machines of the type which reforms tubular packaging material of substantially circular cross-sectional configuration into individual package containers of quadrilateral cross-sectional configuration normally consist of pairwise cooperating forming flaps which are of U-shaped cross-section. In order to prevent the packaging material from being pinched between the shank surfaces of the flaps when the flaps are caused to surround the packaging material tube, the shank surfaces are designed to be undulatory, i.e. alternatingly with projections and recesses which fit in one another and guide the packaging material tube into the U-shaped recesses of the flaps without pinching the packaging material tube.

Abstract: Packaging container of a material containing a skeletal layer of plastic and filler mixed into the plastic in a quality of between 50 and 80% of the total weight of the skeletal layer. In order to facilitate the opening of the container the container is provided with a tearing mark incorporated in the packaging material, along which the material in the container must be torn to expose a container opening through which the contents of the container are made accessible. The tearing mark consists of an unbroken recess in the skeletal layer or a similar linear recess weakening the material with a depth of penetration of approximately 10-30% of the total thickness of the skeletal layer.

Abstract: A heating apparatus for heating thermoplastic packaging materials to allow the materials to be heat-sealed, formed, or reformed includes two nozzles which supply heated air to the packaging materials, a suction box which sucks the heated air away from the packaging materials after the air has heated the materials, and a recirculation duct which recirculates the heated air from the suction box back to an intake of the nozzles.