EP0627982A1 - Verfharen zur herstellung von rohrkörpern für verpackungstuben - Google Patents
Verfharen zur herstellung von rohrkörpern für verpackungstubenInfo
- Publication number
- EP0627982A1 EP0627982A1 EP93917517A EP93917517A EP0627982A1 EP 0627982 A1 EP0627982 A1 EP 0627982A1 EP 93917517 A EP93917517 A EP 93917517A EP 93917517 A EP93917517 A EP 93917517A EP 0627982 A1 EP0627982 A1 EP 0627982A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- edges
- film
- belt
- tube
- mandrel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
- B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
- B29C53/36—Bending and joining, e.g. for making hollow articles
- B29C53/38—Bending and joining, e.g. for making hollow articles by bending sheets or strips at right angles to the longitudinal axis of the article being formed and joining the edges
- B29C53/48—Bending and joining, e.g. for making hollow articles by bending sheets or strips at right angles to the longitudinal axis of the article being formed and joining the edges for articles of indefinite length, i.e. bending a strip progressively
- B29C53/50—Bending and joining, e.g. for making hollow articles by bending sheets or strips at right angles to the longitudinal axis of the article being formed and joining the edges for articles of indefinite length, i.e. bending a strip progressively using internal forming surfaces, e.g. mandrels
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/01—General aspects dealing with the joint area or with the area to be joined
- B29C66/03—After-treatments in the joint area
- B29C66/034—Thermal after-treatments
- B29C66/0342—Cooling, e.g. transporting through welding and cooling zone
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/01—General aspects dealing with the joint area or with the area to be joined
- B29C66/05—Particular design of joint configurations
- B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
- B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
- B29C66/114—Single butt joints
- B29C66/1142—Single butt to butt joints
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
- B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
- B29C66/43—Joining a relatively small portion of the surface of said articles
- B29C66/432—Joining a relatively small portion of the surface of said articles for making tubular articles or closed loops, e.g. by joining several sheets ; for making hollow articles or hollow preforms
- B29C66/4322—Joining a relatively small portion of the surface of said articles for making tubular articles or closed loops, e.g. by joining several sheets ; for making hollow articles or hollow preforms by joining a single sheet to itself
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
- B29C66/49—Internally supporting the, e.g. tubular, article during joining
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/80—General aspects of machine operations or constructions and parts thereof
- B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
- B29C66/816—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the mounting of the pressing elements, e.g. of the welding jaws or clamps
- B29C66/8161—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the mounting of the pressing elements, e.g. of the welding jaws or clamps said pressing elements being supported or backed-up by springs or by resilient material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/80—General aspects of machine operations or constructions and parts thereof
- B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
- B29C66/818—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the cooling constructional aspects, or by the thermal or electrical insulating or conducting constructional aspects of the welding jaws or of the clamps ; comprising means for compensating for the thermal expansion of the welding jaws or of the clamps
- B29C66/8181—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the cooling constructional aspects, or by the thermal or electrical insulating or conducting constructional aspects of the welding jaws or of the clamps ; comprising means for compensating for the thermal expansion of the welding jaws or of the clamps characterised by the cooling constructional aspects
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/80—General aspects of machine operations or constructions and parts thereof
- B29C66/82—Pressure application arrangements, e.g. transmission or actuating mechanisms for joining tools or clamps
- B29C66/824—Actuating mechanisms
- B29C66/8242—Pneumatic or hydraulic drives
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/80—General aspects of machine operations or constructions and parts thereof
- B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
- B29C66/834—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools moving with the parts to be joined
- B29C66/8341—Roller, cylinder or drum types; Band or belt types; Ball types
- B29C66/83421—Roller, cylinder or drum types; Band or belt types; Ball types band or belt types
- B29C66/83423—Roller, cylinder or drum types; Band or belt types; Ball types band or belt types cooperating bands or belts
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
- B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
- B29C65/24—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools characterised by the means for heating the tool
- B29C65/30—Electrical means
- B29C65/32—Induction
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
- B29C66/72—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined
- B29C66/723—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being multi-layered
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
- B29C66/72—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined
- B29C66/723—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being multi-layered
- B29C66/7232—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being multi-layered comprising a non-plastics layer
- B29C66/72321—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being multi-layered comprising a non-plastics layer consisting of metals or their alloys
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2023/00—Tubular articles
- B29L2023/20—Flexible squeeze tubes, e.g. for cosmetics
Definitions
- the invention relates to a method according to the preamble of claim 1.
- Tubular bodies in particular tube tubes for the production of packaging tubes, are produced by two known processes.
- film tubes and extrusion tubes are distinguished as tube bodies produced by these methods.
- foil tubes are welded by overlapping overlapping edges of the formed foil web, the so-called longitudinal seam welding, extrusion tube, without side seam, by means of extrusion, i.e. formed by extruding plasticized extrusion tools.
- Foil and extrusion tubes have individual advantages and disadvantages that keep their use focused on certain packaging materials.
- film tubes can be adapted relatively easily by appropriate multilayer construction of the film used, while for the same purpose, ie the diffusion inhibition in the extrusion tube, individual tube bodies are to be pushed into one another.
- the advantage of the simple adaptability of the packaged goods Compared to the extrusion tube, the importance of foil tubes is reduced by the visible longitudinal weld seam, in that they do not adversely affect the aesthetic appearance of a tube tube. Due to the welding, all-round printing of a film tube - in contrast to the extrusion tube without a weld seam - is not possible.
- an extrusion tube is printed from a tube emerging from an extruder by being picked up on a mandrel and being unwound in relation to one or more rotating pressure rollers.
- This type of printing clearly limits the achievable print quality, since the sharpness of image reproductions does not satisfy all parts.
- Halftone qualities also have visible quality limits. These restrictions do not apply to the film tubes, since films are printed in a flat position before they are formed and welded to the edges.
- the extrusion tube is inferior to the film tube in terms of technical adaptation to the packaged goods and print quality, the extrusion tube is preferred by the cosmetic industry for packaging high-quality cosmetic products because of the lack of longitudinal seams and, albeit unsatisfactory all-round printing qualities. It is therefore aesthetic tube properties that ensure the preferred use of the extrusion tube for products of the type mentioned in the cosmetic industry.
- the object of the invention is achieved by means of a film tube with a novel edge welding solution. It is known to weld the edges together in an overlapping position by at least partially flowing into one another during the welding process. This type of welding places a relatively high vertical pressure on the peripheral surface of the edges, i.e. the inner and outer edge or edge section of the film strip made of meltable plastics after the pipe body has been formed, so that visible deformations by pressure tools - in the form of the weld seam - remain on the outer surface of the film pipe. This type of welding leads to secure seams with mechanical-technological properties equal to or better than those of the foils used. This is the reason that until now only the way of overlapping welding has been followed in the technology of film tube production.
- weld seams of the same safety ie with mechanical-technological properties of the same size or with a comparable magnitude as those of the overlapping weld. It has also been shown that, in comparison to the known welding method for carrying out the method according to the invention, less energy for melting and connecting the cut surfaces into the weld region, formed in each case by an edge section adjoining a vertical cut surface, has to be entered.
- the lower energy input as an advantage is supplemented by the fact that, in the method according to the invention, film surfaces made of meltable materials, for example meltable plastics, experience less impairments (destruction), so that a seam produced according to the invention has a smooth surface with the same gloss as the material of the film tube, so that the seam retreats in its appearance.
- the lower energy input means that printing inks on the film are not visibly impaired or destroyed as in the known method. This enables printing up to the edge, ie the edges of the film, so that after tube formation the impression of an all-round tube is created.
- FIG. 2 shows a tube formation area of the device on a larger scale compared to FIG. 1;
- Fig. 3 shows a shaped element in a section line A-A in Fig. 1;
- Fig. 4 in magnification positioning and pressing a plastic film on a mandrel.
- the device shown in FIG. 1 for carrying out the method according to the invention for producing tubular bodies consists of a base plate 10, on which a support plate 11 is articulated in a vertical direction.
- the movable linkage takes place via actuators 12, which are arranged between the base plate 10 and the support plate.
- Each actuator 12 is fastened at its upper end 13 to the base plate 10 and at its lower end 14 to the support plate 11, so that by means of the actuators 12 the position of the support plate 11 can be vertically positioned and fixed.
- the schematically represented actuators 12 are preferably pneumatically activatable actuators, the upper end 13, the piston housing, of which is attached to the base plate 10, while the lower end 14, the free end of the piston rods, is in engagement with the support plate 11.
- the support plate 11 carries at its front, lower ends 17 a freely rotatable roller 16 and at a distance above it an equally designed roller 15, the axial positions of which cannot be changed.
- a drive roller 19 is arranged on the base plate 10, the diameter of which corresponds to the center distance of the rollers 15 and 16 plus the sum of half the diameter of the rollers 15 and 16.
- the distances between the upper roller 15 and lower roller 16 from the support plate 11 and the distance between the drive roller 19 and the base plate 10 are such that the conveyor belt 20 moves at a uniform distance from and in front of the surface of the support plate 11, with the front surface the surface of the support plate 11 is designated, which lies opposite the surface of the support plate 11 which supports the articulations of the lower free ends 14 of the actuators 12.
- a heating device 23, a pressure device 24 and a cooling device 25 are arranged in succession on the support plate 11 in the direction of movement of the conveyor belt 20 after the lower roll 16.
- the heating device 23, the printing device 24 and the cooling device 25 are rail-shaped and are mounted on the support plate in such a way that they can be moved in the vertical direction.
- the heating device 23 is equipped with an actuator 26, e.g. connected in the form of a pneumatic cylinder with piston rod.
- the pneumatic cylinder housing is connected to the support plate 11 and the free end of the piston rod with the heating device 23, so that with appropriate activation of the actuator 26 a vertically directed lifting or lowering movement of the heating device 23 can take place.
- the heating device 23 preferably includes an inductive high-frequency heating system running in its longitudinal direction, which generates heat in the operating state and transmits it to the lower belt run 22 of the conveyor belt 20 and to the upper belt run 34 of the metallic conveyor belt 33.
- an inductive high-frequency heating system running in its longitudinal direction, which generates heat in the operating state and transmits it to the lower belt run 22 of the conveyor belt 20 and to the upper belt run 34 of the metallic conveyor belt 33.
- the heating device 23 not only to adjust, for example, its contact pressure on the inside of the lower belt run 22 vertically but also in motion direction of the lower belt run 22, for example to its center line, aligned or rectified is adjustable, which can be effected by changing the longitudinal position of the heating device 23 to the support plate 11.
- the pressure device 24, like the heating device 23, is adjustably mounted in the vertical direction via an actuator 27 in the form of, for example, a pneumatic cylinder with a piston rod on the support plate 11, so that the pressure device 24 can be pressed against the interior of the lower belt run 22 so as to be variable, regardless of the contact pressure of the heating device 23 to exert influence on the flow behavior of different plastics.
- an actuator 27 in the form of, for example, a pneumatic cylinder with a piston rod on the support plate 11, so that the pressure device 24 can be pressed against the interior of the lower belt run 22 so as to be variable, regardless of the contact pressure of the heating device 23 to exert influence on the flow behavior of different plastics.
- the vertical adjustability of the heating device 23 and printing device 24 serves a total of three purposes. Firstly, the device can be set to process foils of different thicknesses. Furthermore, material-specific values of the plastics can be set via the contact pressure and the temperature and the pressing pressure. The vertical adjustability also serves to compensate for fluctuations in the thickness of the plastic films. For the latter purpose, sensors (not shown) are provided, which sense the corresponding values and pass them on for adjusting the actuators.
- the cooling device 25 consists of three cooling blocks 25a, which are in a common holder the support plate 11 are mounted to be movable to a limited extent in the vertical direction.
- Compression springs 28 are provided between the holder and the respective side of each cooling block 25a opposite the inside of the lower belt run 22, which exert a pressing force in the direction of the interior of the lower belt run 22, so that for the purpose of uniform heat transfer from the lower belt run 22 to the cooling device 25 a secure contact is guaranteed.
- the cooling blocks of the cooling device 25 are cooled with a heat-absorbing fluid, preferably by means of a water flow or air conducted through the cooling blocks.
- a heat-absorbing fluid preferably by means of a water flow or air conducted through the cooling blocks.
- the heat absorption capacity or the heat withdrawal can be adjusted according to requirements specific to the weld metal.
- the plastic undergoes pre-solidification (the degree of pre-solidification depends on the material) and the pressure device 24 is also cooled in an adjustable manner in the manner of the cooling device 25, so that the pressing and entry into the cooling device 25 can take place during operation at a constant temperature which, like the degree of pre-solidification, is material-specific.
- one or more cooling rails 29 are arranged on the support plate 11, which cooperate with the inside of the upper belt run 21.
- the cooling rails 29 are cooled by water and cool the upper belt run 21 to such an extent that it runs into the heating device as a lower belt run at a constantly uniform temperature after it has been deflected around the rollers 15 and 16.
- the adjusting rollers 30, 31 and 32 serve the purpose, when the vertical axial position "H" of the roller 16 changes to make the position of the upper belt run 34 of the endless steel belt 33, the parallel running of the upper belt run 21 on the cooling blocks 29 and the lower belt run 22 on the heating device 23, the printing device 24 and the cooling device 25 adjustable.
- the adjusting rollers 31 and 32 serve to adjust and keep the tension of the conveyor belt 20 constant.
- the adjusting rollers 30 and 31 are at the same distance from the base plate 10 by means of roller holders 36 and 38 as the rollers 15 , 16 movably supported by the base plate 10.
- Each roll holder 36, 37 carries a roll at one free end, while at its other end it is attached to an anchor 38, 39 fixed to the base plate 10.
- the roller holders 36, 37 are adjustable and pivotable relative to the anchors 38, 39, so that the distance between the anchors 38, 39 and the axis of the adjusting rollers 30, 31 changes and the adjusting rollers 30, 31 can be moved at a radially variable distance around the anchors are.
- the adjusting roller 32 is fastened to the base plate 10 by means of a toggle lever consisting of two legs 40, 41.
- the legs 40, 41 have a fixed opening angle to one another and are rotatably mounted at their intersection about a fixed anchor 42.
- the leg 40 carries the adjusting roller 32 at its free end, while the free end of the leg 41 is connected to a pneumatic or hydraulic actuator 43, so that when the actuator 43 is actuated, the adjusting roller 32 can be moved around the anchor 42 to adjust the tension of the conveyor belt 20.
- a sensor 44 is used to keep the belt tension constant, which senses the tension of the belt and / or its temperature and triggers corresponding movements of the actuator 43 to keep it constant.
- the part of the device which forms a tubular body comprises a mandrel 45, a circumferentially driven shaping belt 46 which carries a plastic film strip 48 on its side facing the mandrel 45, and a plurality of shaping elements 47 which are arranged at a distance from one another in the longitudinal direction of the mandrel 45 and which form the Deform the belt 46 and the film strip 48 around the circumference of the mandrel 45.
- the mandrel 45 which is round in cross section, is fixedly arranged on the base plate 10. 2, it extends in the same direction and at a distance from the heating device 23, pressure device 24 and cooling device 25.
- the groove 64 is ver on the bottom with insulation 65 to prevent the dissipation of the heat generated in the upper belt run 34 see.
- a gap is formed in which the abutting edges of the film 48 are melted, smoothed and then cooled, initially held together under pressure, to form a weld seam running in the longitudinal direction .
- the conveyor belt 33 runs around a drive roller 50 fixedly arranged on the base plate 10, and a freely rotatable adjusting roller arranged on its inside
- the deflection roller 49 ensures horizontal synchronization with the bottom of the guide groove, a deflection roller 49 that is not adjustable in its axial position and an adjusting roller 53.
- the adjusting rollers 51, 52 and 53 are articulated on the base plate 10, the adjusting roller 51 also keeping the strap tension constant via a sensor 54 and actuator 55 which records temperature and / or strap tension.
- a sensor 54 and actuator 55 which records temperature and / or strap tension.
- This makes it possible, when using different mandrel diameters, to set the distance "J" between the longitudinal axis of the mandrel and the lower belt run 22 while maintaining the parallel movement of the lower belt run 22 to the upper belt run 34 and lower belt run 35 to the upper belt run 34.
- a resistance heater 56 is preferably provided in the form of a high-frequency coil before the setting roller 1 e 52.
- the shaped element 47 shows a shaped element 47 with a section 45 of the mandrel 45 mounted inside the shaped element 47 and the heating device 23 arranged above the mandrel 45.
- the shaped element 47 consists of a support block 57 which is fastened to the base plate 10 on its side 58.
- the form element 47 carries three freely rotatable form rollers 59, 60 and 61.
- the form roller 59 arranged below the mandrel 45 rotates about a horizontal axis, while the form rollers 60 and 61 arranged laterally to the mandrel 45 rotate about vertical axes which are eccentric for the fine adjustment of the
- the size of the contact pressure of the mutually abutting vertical cut surfaces or film edges, hereinafter also referred to as edges 75, can be adjusted.
- the distances between the horizontal and vertical axes of rotation decrease towards the center of the mandrel 45, so that the convexly shaped ones Deflect the treads of the shaping rollers 59, 60, 61 in the longitudinal direction around the mandrel 45 with the overlying foil 48 running between the rollers 59, 60, 61 and mandrel 45.
- the width of the forming belt is smaller than that of the Fuljen track.
- edge regions or edge sections 76 of the edges 75 which are melted in the heating device 23 and abut against one another are torn off from the respectively non-melted material of the tube wall, which prevents one constant density and at its outer edges crack-free weld seam guaranteed.
- the center distances of the form rollers 59, 60, 61 of the form elements 47 arranged one behind the other increase again from the center of the mandrel 45, so that the form belt 46 opens and the form belt with tube follows Release of the tube from the lower band run 22 and upper band run 31 can run from the mandrel 45 substantially in the longitudinal direction to the mandrel 15.
- the endless form belt 46 which is preferably made of easily deformable fiber-reinforced plastic, is driven by a drive roller 62, guided by a belt tensioning device 63 and around further deflection rollers.
- the drive roller 62, the belt tensioning device 63 and the deflection rollers are arranged at such a spacing on the base plate 10 that the center line of the forming belt 46 coincides with the vertical center line of the mandrel 45, so that the edges 46a of the forming belt 46 pass through the shaped elements 47, optionally supported by an eccentric and swivel adjustment of the form rollers 60, 61 always lie opposite one another in a substantially horizontal plane, as a result of which a perfect contact of the film edges 75 with one another with a predetermined contact pressure is ensured.
- the edges 75 are each shown as a smooth, perpendicular cutting edge. It is also within the scope of the invention to cut the edges 75 at an angle, so that the abutting line would not run vertically when the edges 75 formed in this way, as shown in FIG. 4, but at an angle. Good strengths have been found with bevels of 20 to 60 degrees, preferably 40 to 45 degrees. It is also possible according to the invention to design the edges 75 in a step-like manner and to bring the steps into engagement with one another when the tubular body is formed.
- a tubular body is produced, for example, from a multilayer plastic film by means of the device described for carrying out the method as follows.
- the film 48 runs flat on the conveyor belt 46, which also runs flat, and is carried lying flat by the forming belt 46 to the forming elements 47.
- the mandrel 45 is located above the film 48
- Shaped elements 47, the shaped belt 46 with the film 48 lying thereon are shaped in a substantially circular manner with a decreasing diameter around the mandrel 45 via the shaping rollers 59, 60, 61 until the edges 75 of the film 48 abut one another under a predetermined contact pressure.
- the width of the conveyor belt 46 is dimensioned such that, after the edges have come into contact, the opposite edges of the conveyor belt 46 do not cover the contact area of the edges 75 for subsequent processing, but instead form a gap between them in the longitudinal direction of the tube tube, in which the contact area is exposed .
- the shaping rollers 60 and 61 can be adjusted by means of their eccentric adjustment and swivel adjustability.
- the pressure on the edges 75 for example in the tangential direction to the tubular body in the abutment area of the edges 75 of the film 48, is exerted via the forming belt 46, i.e. developed by means of the friction between the belt 46 and film 48 and the curvature of the belt 46.
- the film 48 and the shaping belt 46 are shaped such that only the abutment area rests on the upper belt run 34, but otherwise there is no contact between the film 48 and the mandrel 45 to avoid friction between the stationary mandrel 15 and the transported film 48.
- the mandrel 45 is provided with a channel 69 arranged in its interior, through which a cooling medium flows.
- an air conduction device is arranged in the interior, which consists of a bore 67 running in the longitudinal direction of the mandrel 45, from which in the region of the pressure device 24 towards the deflection roller 49 to the end of the mandrel 45 radially extending holes 68, which extend on the circumference of the Open mandrel 15 and, if necessary, convey air for cooling purposes, reduction of friction and for calibration of the tube diameter into the space between the mandrel surface and the inner wall of the tube.
- the conveyor belts 20, 33 After formation of the abutment area formed from two edge areas 76, 77, the latter runs in between the conveyor belts 20, 33, the contact pressure preferably being maintained, the conveyor belts also being used for the purposes mentioned (positioning) of the edges, shaping i.e. Smoothing the weld seam, good heat transfer from conveyor belts to the system area) can exert pressure on the abutment area in the vertical direction.
- the inside of the lower belt run 22 is in contact with the heating device 23, which in the case of metallic conveyor belts 20 and 33 heats the latter by high-frequency induction to a temperature sufficient to bring the plastic to a temperature necessary for welding under pressure.
- the heating device 23 which in the case of metallic conveyor belts 20 and 33 heats the latter by high-frequency induction to a temperature sufficient to bring the plastic to a temperature necessary for welding under pressure.
- the melted abutment area passes under a pressure device 24, which acts on the inside of the lower belt run 22 and allows the edges of the abutment area to run into one another under pressure and at the same time smoothes and cools so that its design pre-solidifies into the adjoining cooling device .
- the cooling device 25 the residual heat necessary for its mechanical strength is removed from the abutment area via the lower belt run 22.
- the shaping belt 46 opens in that the center distances of the shaping rollers 59, 60, 61 of the shaping devices 47 increase from the circumference of the mandrel 45, so that the welded tube is free of the mandrel 45 for further processing, for example, can run for separation.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Fluid Mechanics (AREA)
- Shaping Of Tube Ends By Bending Or Straightening (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH02641/92A CH686665A5 (de) | 1992-08-26 | 1992-08-26 | Verfahren zur Herstellung von Rohrkoerper fuer Verpackungstuben. |
CH2641/92 | 1992-08-26 | ||
PCT/CH1993/000211 WO1994004343A1 (de) | 1992-08-26 | 1993-08-25 | Verfharen zur herstellung von rohrkörpern für verpackungstuben |
Publications (1)
Publication Number | Publication Date |
---|---|
EP0627982A1 true EP0627982A1 (de) | 1994-12-14 |
Family
ID=4238330
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP93917517A Withdrawn EP0627982A1 (de) | 1992-08-26 | 1993-08-25 | Verfharen zur herstellung von rohrkörpern für verpackungstuben |
Country Status (11)
Country | Link |
---|---|
US (1) | US5569144A (de) |
EP (1) | EP0627982A1 (de) |
JP (1) | JPH07502947A (de) |
KR (1) | KR100312611B1 (de) |
CN (1) | CN1090526A (de) |
AU (1) | AU672219B2 (de) |
CH (1) | CH686665A5 (de) |
MX (1) | MX9305147A (de) |
PH (1) | PH31034A (de) |
WO (1) | WO1994004343A1 (de) |
ZA (1) | ZA935993B (de) |
Families Citing this family (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8906187B2 (en) * | 2008-06-25 | 2014-12-09 | Colgate-Palmolive Company | Method of making shoulder/nozzles with film barrier liners |
DE102011008068A1 (de) * | 2011-01-07 | 2012-07-12 | Packsys Global (Switzerland) Ltd. | Vorrichtung und Verfahren zur Herstellung von Tubenrohren für Verpackungstuben |
EP2502725B1 (de) * | 2011-03-24 | 2015-01-07 | PackSys Global (Switzerland) Ltd. | Vorrichtung und Verfahren zum Herstellen von Tubenkörpern |
DE102011051111A1 (de) | 2011-06-16 | 2012-12-20 | Packsys Global (Switzerland) Ltd. | Verfahren zum Herstellen von Rohrkörpern für Verpackungstuben |
DE102011051109A1 (de) | 2011-06-16 | 2012-12-20 | Packsys Global (Switzerland) Ltd. | Verfahren zum Herstellen von Rohrkörpern für Verpackungstuben sowie Verpackungstube mit Rohrkörper |
DE102011051108A1 (de) | 2011-06-16 | 2012-12-20 | Packsys Global (Switzerland) Ltd. | Verfahren zum Herstellen von Rohrkörpern für Verpackungstuben sowie Verpackungstube mit Rohrkörper |
DE102011051110B4 (de) | 2011-06-16 | 2014-04-30 | Packsys Global (Switzerland) Ltd. | Verfahren zum Herstellen von Rohrkörpern für Verpackungstuben |
DE102012102374A1 (de) * | 2012-03-21 | 2013-09-26 | Linhardt Gmbh & Co. Kg | Verfahren zum Herstellen von Tubenverpackungen oder Tuben sowie Tubenverpackung oder Tube |
EP2829381A1 (de) * | 2013-07-25 | 2015-01-28 | PackSys Global (Switzerland) Ltd. | Schweißvorrichtung zum Herstellen von Tubenkörpern |
CN106256697A (zh) * | 2015-06-19 | 2016-12-28 | 迪博泰有限公司 | 具有旋转台保持的裁切机的包装机器 |
JP6682924B2 (ja) * | 2016-03-09 | 2020-04-15 | コニカミノルタ株式会社 | 画像形成装置 |
CN106826131B (zh) * | 2017-02-28 | 2019-10-01 | 云南昆钢新型复合材料开发有限公司 | 一种不锈钢复合材料内复合直缝管的制管设备及其方法 |
JP2022540754A (ja) * | 2019-07-19 | 2022-09-20 | アイサパック ホールディング エスエー | 低減摩擦駆動装置 |
KR20210149510A (ko) | 2020-06-02 | 2021-12-09 | 김재찬 | 포장용 튜브의 원단 |
EP4082757A1 (de) | 2021-04-26 | 2022-11-02 | Aisapack Holding SA | Verpackung, bei der die verschweissung im aufdruck verborgen ist, und entsprechendes herstellungsverfahren |
EP4364928A1 (de) * | 2022-11-04 | 2024-05-08 | PackSys Global AG | Vorrichtung zum herstellen von tubenkörpern mit verbesserter kühlung einer schweissnaht |
Family Cites Families (17)
Publication number | Priority date | Publication date | Assignee | Title |
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US2214624A (en) * | 1938-06-09 | 1940-09-10 | Western Electric Co | Forming apparatus |
US2256263A (en) * | 1940-10-10 | 1941-09-16 | Continental Can Co | Method of and apparatus for forming paper container bodies |
US2451728A (en) * | 1945-04-17 | 1948-10-19 | Breslee Mfg Company | Heat-sealing apparatus |
US2741296A (en) * | 1953-04-20 | 1956-04-10 | William F Stahl | Apparatus for heat-sealing overlapping surfaces of plastic material |
US3207651A (en) * | 1961-07-13 | 1965-09-21 | Procter & Gamble | Apparatus for making tubing from a continuous web |
US3133390A (en) * | 1961-09-26 | 1964-05-19 | William C Leasure | Apparatus for sealing strip material |
US3388017A (en) * | 1963-12-18 | 1968-06-11 | American Can Co | Tube making method and apparatus |
DE1652765A1 (de) * | 1968-01-29 | 1969-10-30 | Majer Christian Kg | Vorrichtung zum Ziehen von Rohren aus Folienstreifen |
US3575769A (en) * | 1968-03-27 | 1971-04-20 | American Can Co | Tube side seaming method and apparatus |
US4266201A (en) * | 1979-03-23 | 1981-05-05 | Harris Corporation | Method and apparatus using first and second parallel channels, one of which includes an inverter, for producing an electrical signal with an improved on/off ratio |
FR2477962A1 (fr) * | 1980-03-11 | 1981-09-18 | Sireix Georges | Procede de formage de profiles notamment de profiles tubulaires |
IT1184200B (it) * | 1984-03-26 | 1987-10-22 | Vercon Inc | Procedimento per la produzione di contenitori tubolari termoplastici con strato di barriera |
SE445031B (sv) * | 1984-10-02 | 1986-05-26 | Akerlund & Rausing Ab | Forpackningstub samt forfarande och anordning for tillverkning derav |
DE3810611A1 (de) * | 1988-03-29 | 1989-10-19 | Krupp Gmbh | Verfahren zum herstellen von dosenzargen und vorrichtung zum durchfuehren des verfahrens |
JP2820528B2 (ja) * | 1988-11-14 | 1998-11-05 | デラウエア キヤピタル フオーメーシヨン インコーポレイテツド | 高速コンタクトシーラー |
EP0409021B1 (de) * | 1989-07-21 | 1997-02-19 | Kmk Lizence Ltd. | Vorrichtung und Verfahren zur Herstellung von Rohrkörpern |
CH680714A5 (de) * | 1989-08-22 | 1992-10-30 | Elpatronic Ag |
-
1992
- 1992-08-26 CH CH02641/92A patent/CH686665A5/de not_active IP Right Cessation
-
1993
- 1993-08-17 ZA ZA935993A patent/ZA935993B/xx unknown
- 1993-08-18 PH PH46709A patent/PH31034A/en unknown
- 1993-08-25 KR KR1019940701382A patent/KR100312611B1/ko not_active IP Right Cessation
- 1993-08-25 AU AU46970/93A patent/AU672219B2/en not_active Ceased
- 1993-08-25 MX MX9305147A patent/MX9305147A/es unknown
- 1993-08-25 JP JP6505731A patent/JPH07502947A/ja active Pending
- 1993-08-25 WO PCT/CH1993/000211 patent/WO1994004343A1/de not_active Application Discontinuation
- 1993-08-25 US US08/232,044 patent/US5569144A/en not_active Expired - Fee Related
- 1993-08-25 EP EP93917517A patent/EP0627982A1/de not_active Withdrawn
- 1993-08-26 CN CN93118324A patent/CN1090526A/zh active Pending
Non-Patent Citations (1)
Title |
---|
See references of WO9404343A1 * |
Also Published As
Publication number | Publication date |
---|---|
CN1090526A (zh) | 1994-08-10 |
AU672219B2 (en) | 1996-09-26 |
KR100312611B1 (ko) | 2002-02-19 |
JPH07502947A (ja) | 1995-03-30 |
CH686665A5 (de) | 1996-05-31 |
ZA935993B (en) | 1994-03-14 |
MX9305147A (es) | 1994-05-31 |
AU4697093A (en) | 1994-03-15 |
US5569144A (en) | 1996-10-29 |
WO1994004343A1 (de) | 1994-03-03 |
PH31034A (en) | 1997-12-29 |
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