Abstract:
An irrigation pipe (12) with holes is provided. The pipe is, at least in the area of each hole, multilayered. At least top (152a) and bottom (152b) layers of the pipe (12) are made of a water-repellant material, and an inner layer (154) of the pipe (12) is made of a porous material. The hole is defined by a cut surface of the pipe wall. The cut surface comprises a seal, which covers at least the inner layer (154). Each layer (152a, 152b, 154) may be bonded to adjacent layers.
Abstract:
Die Ausgiesser (1) werden ab einer Gleitbahn (70) von einer Handlingvorrichtung (50) mit einer Drehachse (51) und an deren Ende zwei Y-förmig abstehenden Greiferästen (53,54) mit endseitig angeordneten Greifern (63,64) ergriffen. Die Drehachse (51) wird taktweise um einen Drehbereich von 180° hin und zurück gedreht. In jeder Endposition der Drehung ergreift der eine Greifer (64) einen Ausgiesser von einer Gleitbahn (70), während der andere (63) einen zuvor ergriffenen Ausgiesser (1) auf einem taktweise zugeführten Lochband (2) positioniert und während der Verschweissung mittels einer Schweisseinrichtung (80) hält und dann freigibt. Die Vorrichtung besteht vorzugsweise aus zwei Bearbeitungsstationen mit je einer Gleitbahn (70) für die heranzubringenden und zu vereinzelnden Ausgiesser (1), sowie eine zugehörige Handlingvorrichtung (50) für das Ergreifen, Positionieren und Halten der Ausgiesser (1) für deren Verschweissen und einer Schweisseinrichtung (80). Jede Handlingvorrichtung (5) weist eine motorisch drehbare Drehachse (51) und an deren einem Ende zwei Y-förmig abstehende Greiferäste (53,54) mit endseitig angeordneten Greifern (63,64). Während des Ergreifens eines Ausgiessers (1) positioniert der jeweils andere Greifer (63) einen Ausgiesser (1) auf dem Lochband (2).
Abstract:
An apparatus for attaching a tube segment to a bag by fusing them together in an aseptic form, fill and seal operation is provided. The apparatus includes a sterile processing chamber in which a sterilized tube segment and a pair of opposing wall portions of a flexible bag are to be located. The sterilized tube segment has an open end which is to be placed in communication with an interior space of the bag. A tube inserter is at least partially located within the processing chamber and arranged to grip the tube segment and place the tube segment between the wall portions of the bag. At least one member is provided for fusing the tube segment between the wall portions of the bag so that the open end of the tube segment is in communication with the interior space in the bag. A bag formed using the apparatus and a method of forming the fused tube-on-bag are also provided.
Abstract:
By the welding of plastic material, said plastic material is placed between a welding electrode (9) of a profile and pattern mating the welding to be performed, and a counter electrode (10) comprising one or several pulse heating wires (22). Together the pulse heating wires cover the pattern of the welding electrode (9) and project preferably a short distance beyond said welding electrode. The pulse heating wires are furthermore mutually and outwardly electrically insulated. A separating tape of a higher melting point than the plastic material has been inserted between the pulse heating wires (22) and the plastic material. The used welding press comprises a welding plane with the welding electrode (9) and a fixing plane (32) for the counter electrode (10). The temperature of the welding electrode (9) can be kept constant and within a temperature range of approximately 20 DEG C to approximately 250 DEG C. The fixing plane (32) is non-heated. The pulse heating wires (22) are secured to the fixing plane and are mutually and outwardly electrically insulated. Each pulse heating wire (22) communicates with a current source and an electronic regulator capable of setting and regulating the temperature and heating period of each pulse heating wire (22) very accurately.
Abstract:
Methods and apparatus for manufacturing solar heating devices of a type having bonded together sheets of thermoplastic material forming a flexible wall container for fluid to be heated. The methods and apparatus involve advancing first and second elongate indeterminate lengths of sheet material longitudinally along respective paths while heating, bonding and sealing the sheets. Specific arrangements and steps for heating, bonding, and sealing are described.
Abstract:
Die Erfindung betrifft eine Verbundfolie (100) für Verpackungsbehälter, insbesondere für Schlauchbeutelpackungen (1), mit einem aus mehreren Packstoffschichten (101 bis 105) bestehenden Folienverbund, wobei eine innere Packstoffschicht (105) als heißsiegelfähige Schicht ausbildet und auf eine äußere Packstoffschicht (101) eine Öffnungseinrichtung (10) befestigbar ist, insbesondere durch Aufsiegeln auf die äußere Packstoffschicht (101), und wobei die Packstoffschichten (101 bis 105) im Bereich der Öffnungseinrichtung (10) einen Schwächungsbereich aufweisen. Erfindungsgemäß ist es vorgesehen, dass der Schwächungsbereich als wenigstens ein teilkreisförmiger Schnitt (20) ausgebildet ist, dessen Durchmesser (d) der Anordnung von Schneiden (13) angepasst ist, die als Bestandteil der Öffnungseinrichtung (10) auf einem Teilkreisdurchmesser (t) der Öffnungseinrichtung (10) angeordnet sind, und dass der wenigstens eine Schnitt (20) auf der äußeren Packstoffschicht (101) ausgebildet ist.
Abstract:
A container (51) for storage and dispensing of fluids, comprising collapsible front (54) and rear walls (56) defining a chamber, having a gland (50) defining a fluid passage for allowing the passage of fluids into the chamber carried on the front wall (54) of the container (51). The gland (50) includes a sealing land (59) within the container for sealingly engaging a heat sealable membrane (61) along a continuous seal upon the application of heat through the rear wall (56) of the container. The sealing land (59) in a pre-sealed condition, includes at least one thermo-deformable projection (64) having a raised profile providing an initial melt zone of reduced area relative to the area of the sealing land.
Abstract:
A reclosable bag that can be hermetically sealed. The bag comprises a pair of zipper strips that are joined in respective zones without substantial deformation of the longitudinal profiled closure elements. These zones of zipper strip joinder assist in providing a leakproof transition from the openable section of the zipper to the corner seals, where the longitudinal profiled closure elements are either substantially deformed (e.g., crushed) or absent. The method of manufacture involves the steps of ultrasonically welding a wide area and then thermally crushing a narrower area overlapping the wide welded area to form leakproof zipper joints. This method can be applied to string (flangeless) zippers as well as flanged zippers.
Abstract:
An apparatus for attaching a tube segment (24, 124, 224) to a bag (10, 140, 240) by fusing them together in an aseptic form, fill and seal operation is provided. The apparatus includes a sterile processing chamber in which a sterilized tube segment and a pair of opposing wall portions (28, 30) of a flexible bag are to be located. The sterilized tube section has an open end which is to be placed in communication with an interior space of the bag. A tuber inserter is at least partially located within the processing chamber and arranged to grip the tube segment and place the tube segment between the wall portions of the bag. At least one member is provided for fusing the tube segment between the wall portions of the bas so that the open end of the tube segment is in communication with the interior space in the bag. A bag formed using the apparatus and a method of forming the fused tube-on-bag are also provided.
Abstract:
A standup bags made of a flexible material and methods of producing these standup bags. In particular, the standup bags have at least one substantially flat surface which is free of seams and folds. When the bag is filled with a flowable substance, the pressure exerted by the fluid upon the flat surfaces allows the bag to be self-standing. Additionally, the standup includes at least one contour structure that defines the geometry of the bag and also contributes to the standup bag's ability to be self-standing when even partially filled with a flowable substance.