摘要:
The invention relates to a welding device (1) for producing tubular bodies by the edge-side welding of two substrate edges (2, 3), in particular two laminate edges, said welding device having a continuous, circulating first contact belt (5) for coming into contact with the substrate (4), and an energy source (12, 13) for providing welding energy. According to the invention, the first contact belt (5) has a seamless polyimide contact surface (35) for coming into contact with the substrate (4).
摘要:
A preferably air-tight and liquid-tight collapsible container comprises a container body (5) formed of a sheet material, said sheet material having two thermoplastic surfaces (2, 3), said sheet material comprising a preferably fluid-tight carrier foil (1) provided at least on and preferably on both sides (2, 3), with a thermoplastic semi-rigid or rigid layer material, preferably a polyester based material said sheet material being folded to a container-like body and sealed in the overlapping edge regions (6, 7) to form a container-like body, said container-like body being coated with a sheathing (9) of elastomeric thermoplastic material of the same kind or type as the foil material to form a container body (5), said container body (5) being provided at one open end (5a) with a container head formed from thermoplastic material of the same kind or type as the foil material.
摘要:
Tube head that is capable of being connected to a skirt so as to form an internal volume of the tube, said tube head comprising a body, said body comprising a neck and a shoulder connected to the neck, said tube head further comprising an insert arranged so as to be in contact with said shoulder so as to form a barrier between the body and the product contained in the internal volume, said insert closing the neck, characterised in that said insert comprises a means for positioning in the tube head.
摘要:
The present disclosure provides a barrier structure comprising: an outer polyethylene layer containing a pigment; a core aluminum layer between two acid copolymer layers; and an inner polyethylene layer; wherein the pigment is with a polyethylene resin in an amount in the range of 50% to 75% w/w ratio with the polyethylene carrier resin.The present disclosure also provides a barrier structure, wherein said barrier structure is an internal barrier liner.The present disclosure further provides a barrier structure wherein said barrier structure is a barrier laminate.
摘要:
A description is given of a semifinished product (20) for producing plastic tubes comprising a substantially cylindrical body (1), the one longitudinal end of which goes over into a head part (2) with a closable squeezing-out opening and the other longitudinal end (5) of which is formed in an open manner. The semifinished product (20) is produced in an extrusion blow-moulding process, in which an extruded parison of plastic comprising one or more layers is inflated in a blow mould in conformity with the cavity of the blow mould. The squeezing-out opening provided in the head part (2) is provided with a one-way closure (27), which has been created during the inflation process within the blow mould. A plastic tube comprising an elongated body (1) which is sealed by a pinch/weld portion (6) is also disclosed.
摘要:
A plant for manufacturing and packaging tubes feeds the tubes via a conveyor belt to a packaging station, where they are packaged to form larger units. The foil strip is a dual or multiple-strip, cut by at least one partitioning blade into individual webs respectively welded in parallel planes to form endless tubes and cut by transverse cutters. The tubular bodies are assembled into a larger transfer group and jointly transferred to a turn table including a corresponding number of mandrels. The turn table conveys them jointly and stepwise to stations for fitting the shoulder portion with a threaded neck and the closure cap. The finished tubes are deposited on a discharge belt and fed to control regions for checking. Flawless tubes are received by the discharge belt and fed continuously to a tray.
摘要:
A flexible tube comprising a skirt and a distribution head, resistant to cracking under stress and forming a barrier to water. The wall of the tube is made from at least one first polymer from the group of polypropylenes, with, at the mid-point from the end of the skirt furthest from the head to the end of the neck forming the distribution hole of the tube, a thickness of between 0.30 mm and 1.00 mm, with a section modulus of between 700 MPa and 80 MPa, the section moduli of the components of the wall being chosen to follow a law of maximum dispersion. The tube finds application in the storage of all products, in particular pasty bodies in cosmetics and pharmaceuticals.
摘要:
Apparatus for manufacturing flexible tubes comprising a skirt and a head provided with a neck and a shoulder linking the neck to the skirt, the apparatus having a first zone devoted to manufacturing the skirts, a second zone devoted to manufacturing the flexible tubes, a third zone devoted to finishing the flexible tubes thus produced, a first transfer device transferring the skirts in continuous motion from the first zone to the second zone, and a second transfer device transferring, in continuous motion synchronized with the former, the tubes from the second zone to the third zone. The second zone has a third transfer device for transferring the punches in continuous motion synchronized with that of the first transfer device and with that of the second transfer device, loading device for loading the skirts on the punches associated with the synchronized movement of said first and third transfer devices, and unloading devices for freeing the punches from the tubes covering them for associated with the synchronized movement of the second and third transfer devices.
摘要:
The invention relates to a method for producing a two-chamber tube with a dividing wall (9) that extends into the tube head. This method comprises the following steps: a) inserting a dividing wall (9) into the gap (8) of an auxiliary mandrel (6); b) sliding a prefabricated tube pipe body (11) onto said auxiliary mandrel (6), which has been fitted with the dividing wall (9); c) axially transferring the blank (12) produced in step b) from the auxiliary mandrel (6) onto a pressing mandrel (2); d) adding a molten portion of a plastic material in a female mold (3); e) conveying the pressing mandrel (2) with the blank (12) into the female mold (3) with the portion of a plastic material in an axial position, in order to mold a tube head onto the blank (12); f) pressing the material portion between the pressing mandrel 92) and the female mold (3) in order to form a tube head, at the same time producing a solid connection with the pipe body (11) and with the section of the dividing wall (9) that is located in the area of the tube head by closing the mold; g) opening the mold, removing the pressing mandrel (2) and withdrawing the finished two-chamber tube. The invention also relates to a device for carrying out the method.
摘要:
A novel fabricated tube construction includes a sleeve formed from a stock material and a plastic neck member which includes a shoulder. The sleeve has overlapping edges which are joined together to form an lap seam. The neck member shoulder includes a mounting portion which has at least one raised, plastic weld rib thereon. An end portion of the sleeve initially overlays the shoulder such that the lap seam of the sleeve overlays the raised weld rib on the mounting portion. As a result, a small void is formed between the lap seam and the mounting portion. When the sleeve and the shoulder are joined together, the raised, plastic weld rib on the mounting portion melts and flows into the void to fill and seal the void. A portion of the mounting portion also melts to form a seal between the shoulder and the sleeve. When the shoulder and the sleeve are joined together in this manner, a leak-proof seal or joint is formed around the entire periphery of the shoulder between the shoulder and the sleeve.