SE201625C1

SE201625C1 -

Info

Publication number: SE201625C1
Authority: SE
Publication date: 1965-01-01

Description

Uppfinnare: F Reifenhauser Prioritet begtird fra'n den december 1956 (Forbundsrepubliken Tysklcmd) Uppfinningen enligt patentanspraken avser ett satt och •en anordning for kontinuerlig framstallning av pa insidan med termoplast kascherade ror resp. slangar av papp, papper eller annat for fOrpackning av flytande, pulverformigt eller kornigt gods, sarskilt livsmedel, lampat material. Inventor: F Reifenhauser Priority applied from December 1956 (Federal Republic of Germany) The invention according to the patent claims relates to a set and a device for continuous production of thermoplastic tubes laminated on the inside resp. hoses of cardboard, paper or other for the packaging of liquid, powdered or granular goods, special food, lamped material.

Uppfinningen bestar dari, att till den ringformiga springan i spruthuvudet av en sprutmaskin for termoplastiska massor kontinuerligt tilifores ett till en cylindrisk, ihalig kropp sammanbockat band av papper, papp eller liknande, varvid den cylindriska kroppen omgiver en ur den ringformiga springan utkommande slang av termoplast och kascheras av denna slang pa insidan. Vid detta satt att framstalla en fOrpackning maste i avvikelse fran det annars vanliga arbetssattet utgas fran ett band, av vilket det forst kort fore tillf5rseln till munstycket bildas en cylinderformig, at sidan oppen, ihalig kropp, emedan vid tillfOrsel av en sluten kropp icke foreligger nagon mojlighet for fastsattning av sprutanordningen. The invention consists in continuously supplying to the annular gap in the syringe head of a spraying machine for thermoplastic masses a strip of paper, cardboard or the like bent into a cylindrical, hollow body, the cylindrical body surrounding a tube of thermoplastic emerging from the annular gap and is concealed by this hose on the inside. In this case, in order to produce a package, in deviation from the otherwise usual mode of operation, it must be disassembled from a belt, of which a cylindrical one is formed shortly before the supply to the nozzle, so that the side is open, hollow body, because no possibility for fixing the spray device.

Bildandet av denna ihaliga kropp kan exempelvis ske pa sa satt, att den ihaliga cylinderns kanter stOta stumt samman. Hopklistringen av kanterna sker da genom att pa den ihaliga .cylindern kaschera slangen av termoplast. En vasentligt fastare ,forbindning uppnas, da bandet enligt en vidareutformning av sattet enligt uppfinningen sammanbockas sh langt till en cylindrisk, ihalig kropp, att sidokanterna overlappa varandra mer eller mindre. Mellan dessa iiverlappningar infores fortlopande en trad av termoplast fore den Dupl. kl. 81 a: 1; 89 a2: 19/02 ihaliga kroppens intrade i den ringformiga springan, och genom anvandande av varme och tryck hopsvetsas derma trad med Overlappningarna fOr bildande av en sluten cylinder eller slang. Uppvarmningen av traden kan harvid ske pa i och for sig kant salt medelst en upphettningskropp, langs vilken traden loper, eller genom stralupphettning eller dylikt. Traden sjalv tillfores fran en forradsrulle Over en. ledrulle pa sa satt, att den vid mitten av overlappningsomradet frammatas med samma hastighet som den cylindriska, ihaliga kroppen resp. den utsprutade plastslangen. Vid delta arbetssatt är Aven den ihaliga kroppen redan tillsluten at sidan, innan den inkommer i det ringformiga munstycket fOr kaschering. The formation of this hollow body can, for example, take place in such a way that the edges of the hollow cylinder collide silently. The edges are then glued together by lashing the thermoplastic hose onto the hollow cylinder. A substantially firmer connection is obtained when the strip according to a further design of the set according to the invention is bent together so far into a cylindrical, hollow body that the side edges overlap each other more or less. Between these overlaps, a thread of thermoplastic for the Dupl is continuously inserted. at 81 a: 1; 89 a2: 19/02 the entrained body enters the annular gap, and by using heat and pressure this thread is welded together with the overlaps to form a closed cylinder or hose. The heating of the wire can then take place on a per se edge of salt by means of a heating body, along which the wire runs, or by jet heating or the like. The thread itself is fed from a supply roll over one. guide roller in such a way that at the center of the overlapping area it is advanced at the same speed as the cylindrical, hollow body resp. the sprayed plastic hose. When working, the hollow body is also already closed at the side, before it enters the annular nozzle for lashing.

En lamplig anordning fOr genomforande av sattet bestar av ett spruthuvud av vanligt slag, vid vilket dock den centrala tillfOrselkanalen mynnar pa lampligt avstand fore den ringformiga springan Over radiellt genom spruthuvudsmanteln ga.ende kanaler i en i denna mantel anbragt, i sidled at ytan Oppen, ringformig springa, Mom vars omrade ar koncentriskt anordnad en for uppstodning och styrning av den ihaliga kroppen avsedd, yttre, ringformig kropp pa sâ satt, att den melIan spruthuvudsmanteln begransar en mot tjockleken av den ihaliga kroppen plus tjockleken av plastslangen svarande, cylindrisk springa, fran vilken den fardiga, kascherade rorformiga kroppen uttrader i spruthuvudaxelns riktning. A suitable device for carrying out the set consists of a spray head of the usual type, in which, however, the central supply channel opens at a suitable distance for the annular gap. Over channels passing through the spray head jacket in channels arranged in this jacket, laterally to the surface open, annular gap, Mom whose area is concentrically arranged an outer, annular body intended for the formation and control of the hollow body in such a way that the intermediate mantle head defines a cylindrical gap corresponding to the thickness of the hollow body plus the thickness of the plastic hose. which the finished, laminated tubular body exits in the direction of the spray head axis.

I stalIet for en sarskild svetstrdd av plast, vilken tract tages fran en forradsrulle, kan vid 2201 6 en modifikation av uppfinningen anordningen lampligen aven vara sa utford, att mom omradet for oyerlappningarna och ovanf8r ringmunstycket i spruthuvudets mantel är anordnad en genom denna utat ford, at sidan bockad •forgrening av ringkanalen med tra.ngt sprutmunstycke, genom vilket en liten del ay sprutgodsmassan sasora tuna trail uttrader och inkonamer mellan de varandra 8verlappande ytorna ay den ihaliga kroppen, varvid mellan denim trads uttradesstalle och halkroppens intradesstalle i ringmunstycket aro anordnade tva tryekrullar, mellan vilka hopsvetsningen av den pa lampligt salt upphettade traden och sidokanterna av den ihaliga kroppen sker. I detta fall anvandes salunda for svetsningen samma material som det for inkascherade slangen anvanda darigenom, att en lamplig trad avgrenas at sidan ur sprathuvudet. In the case of a special welding wire made of plastic, which tract is taken from a supply roll, in a modification of the invention the device may also be so challenging that the area for the eye patches and above the annular nozzle in the spray head casing is provided by this. on the side bent • branching of the annular channel with a narrow spray nozzle, through which a small part of the spray mass sasora tuna trail exits and inconsistencies between the 8 overlapping surfaces ay the hollow body, whereby between the denim wire's exit stall and the hollow body's intradesar stall in the ring nozzle , between which the welding of the wire heated on the suitable salt and the side edges of the hollow body takes place. In this case, the same material was used for the welding as for the cased hose, in that a suitable wire is branched to the side from the spray head.

Anordningen enligt uppfinningen lampar sig for en kontinuerlig fOrpackning under lufttat tillslutning, varvid spruthuvudets dorn innehaller en central kanal for kontinuerlig tillforsel ay forpackningsgodset. Detta forpackningsgods kommer da i beroring endast med denna kanal, ur vilken godset inkommer direkt och eventuellt kontinuerligt i fOrpackningshOljet. Sasom material for kascheringen lampar sig sarskilt polyeten eller andra kanda termoplaster med samma egenskaper. The device according to the invention is suitable for a continuous packaging under aerated closure, the mandrel of the spray head containing a central channel for continuous supply of the packaging goods. This packaging material then comes into contact only with this channel, from which the goods enter directly and possibly continuously into the packaging oil. As the material for the laminating, polyethylene or other known thermoplastics with the same properties are particularly suitable.

Uppfinningen skall beskrivas narmare i det foljande under hanyisning till bifogade ritningar, som visa nagra utfiiringsexempel pa uppfiningen. Fig. 1 visar en axialsektion genom ett spruthuvuds mynningsdel. Fig. 2 vi- sar en sektion langs linjeni fig. 1. Fig. 3 visar framifran •ett till en rorformig kropp samrnanbockat band fore intradet i sprutmunstycket. Fig. 4 visar en tvarsektion genom den oppna, ihaliga kroppen enligt fig. 3 med en styrrulle for en svetstrad. Pig. 5 visar i sektion den ihaliga kroppen enligt fig. 3 i slutet tillstand med tryckrullar. Fig. 6 visar en sektion genom den ihaliga kroppen enligt fig. 3. Fig. 7 visar en axialsektion genom den undre delen av ett sprutmunstycke riled en sidoavgrening ay sprutkanalen for tradbildning. Fig. 8 visar •en tvaysektion langs linjenfig. 7. Fig. 9 visar en tvarsektion langs linjeni fig. 7. The invention will be described in more detail in the following with reference to the accompanying drawings, which show some embodiments of the invention. Fig. 1 shows an axial section through the orifice part of a spray head. Fig. 2 shows a section along the line in Fig. 1. Fig. 3 shows from the front • a band bent together into a tubular body before entering the spray nozzle. Fig. 4 shows a cross section through the open, hollow body according to Fig. 3 with a guide roller for a welding wire. Pig. Fig. 5 shows in section the hollow body according to Fig. 3 in the closed state with pressure rollers. Fig. 6 shows a section through the hollow body according to Fig. 3. Fig. 7 shows an axial section through the lower part of a spray nozzle riled a side branch ay the spray channel for wire formation. Fig. 8 shows a two-section along the line fig. Fig. 9 shows a cross section along the line in Fig. 7.

Spruthuvudet (se fig. 1) bestar av en karna 1 och en cylindrisk mantel 2, som tillsammans med karnan begransar en ringformig kanal 3 fOr tillforsel av sprutmassan. Pa det stalle, day sprutkanalen mynnar i den yttre mantelytan av spruthuvudet, är den inre karnan inom den undre delen 4 utvidgad till ytterdiametern av manteln 2 minus vaggtjock leken for den utsprutade plastslangen 5. Vid denna utvidgade del, som begransas av en svagt konisk yta, är den undre delen 6 av manteln 2 likaledes koniskt utformad pa sA satt, att det bildas ett lampligt for trangt, ringformigt sprutmunstycke 7, frau vilket termoplasten inkommer i sidled i den cylindriska kanal 7a, som begransas a ena sidan av de-lens 4 mantelyta och a adra sidan ay det av popper, papp, plast eller annat lampligt material framstallda, egentliga forpackningsroret resp. forpackningsholjet 8. Pa detta satt lagger sig den ursprutade plasten vid uttradet ur kanalen 7a i annu varmt tillstand mot haljet 8, varvid detta kascheras pa insidan med denna plast. Eftersom haryid hylsan 8 maste upptaga ett icke oansenligt tryck, stOdes hylsan Mom omradet far ringspringan 7a av en omslutande stalring 9. Efter lamnande av ringen 9 har plastkascheringen pa insidan av holjet 8 hardnat sa mycket, att fOrpackningsgodset redan kan ifyllas. Denna ifyllning sker Over en central borrning HI i spruthuvudets karna 1. The spray head (see Fig. 1) consists of a bead 1 and a cylindrical jacket 2, which together with the bead defines an annular channel 3 for supplying the spray mass. At the point where the spray channel opens into the outer jacket surface of the spray head, the inner core within the lower part 4 is extended to the outer diameter of the jacket 2 minus the rock-thick play of the sprayed plastic hose 5. At this extended part, which is bounded by a slightly conical surface , the lower part 6 of the jacket 2 is likewise conically shaped in such a way that a suitable too narrow, annular spray nozzle 7 is formed, from which the thermoplastic enters laterally in the cylindrical channel 7a, which is delimited on one side by the part 4 mantle surface and on the other hand ay the actual packaging tube made of poplar, cardboard, plastic or other suitable material resp. the packaging casing 8. In this way, the protruding plastic lies at the exit from the channel 7a in another warm state against the casing 8, this being cached on the inside with this plastic. Since the sleeve 8 must absorb a not insignificant pressure, the sleeve Mom was placed in the area of the ring gap 7a by an enclosing steel ring 9. After leaving the ring 9, the plastic laminating on the inside of the sleeve 8 has hardened so much that the packaging can already be filled. This filling takes place via a central bore HI in the cores of the spray head 1.

Med hansyn till den nOdvandiga, ntekaniska uppstodningen av detta till en sprutmaskin anslutna spruthuvud kan forpackningsholjet 8 icke tillforas sasom en sluten, ihalig kropp, utan i stallet bojes ett fran en mile avlopande band av fOrpackningsmaterialet med lamplig bredd till ett rot- kring spruthuvudet, vilket rors innerdiameter motsvarar ytterdiametern av den utvidgade delen 6 av manteln 2, sa att utsidan av delen 6 kan tjanstgora sasom styrning for hylsan. In view of the necessary mechanical engineering of this spray head connected to a spraying machine, the packaging casing 8 can not be supplied as a closed, hollow body, but instead a band of the packaging material extending from one mile with a suitable width is bent to a root around the spray head, The inner diameter of the tube corresponds to the outer diameter of the widened part 6 of the jacket 2, so that the outside of the part 6 can serve as a guide for the sleeve.

Eftersom dock en tillslutning av forpackningsholj et fore intradet i sprutmunstycket är Onskvard at hallfasthetssynpunkt, fOreslas en modifikation av anordningen i enlighet med fig. 3, vid vilken bandet har en sadan bredd, att sidokanterna 11 av den av bandet bildade hylsan 12 oyerlappa varandra. I rummet mellan dessa Oyerlappande bandpartier infores en trail 13 ay svetsbar termoplast Over en styrrulle 14 och fastsvetsas efter foregaende upphettning medelst en upphettningskropp 15 (fig. 6) mellan tryckrullarna 16 oeh. 17 vid sidokanterna ay holjet (fig. 4-6). However, since a closure of the packaging casing inserted into the spray nozzle is unobtrusive in terms of hall strength, a modification of the device according to Fig. 3 is proposed, in which the strip has such a width that the side edges 11 of the sleeve 12 formed by the strip overlap. In the space between these overlapping strip portions, a trail 13 of weldable thermoplastic is inserted over a guide roller 14 and welded after previous heating by means of a heating body 15 (Fig. 6) between the pressure rollers 16 and the like. 17 at the side edges of the housing (Figs. 4-6).

I stallet ,for att tillfora en teen utifran kan man aven begagna en anordning enligt fig. 7-9, vid vilken den av den borrade karnan 18 och manteln 19 bildade, ringformiga sprutkanalen 20 har en sidoriktad, i horisontell riktning bockad forgrening 21 med ett trangt munstycke 22, fran vilket standigt utsprutas sprutgodsmassa i form ay en trad, som inkommer i omradet mellan hOljets 27 hada Overlappningar 24, varvid laget ay denna aygreningskanal pa spruthuvudsmanteln och bockningen ay grekanalen aro sa valda, att traden 201 63 23 infores vid mitten av de ytor 24, som skola hopsvetsas. Svetsningen sker sedan medelst tryckrullarna 25, 26 efter foregaende upphettning ay denna trad till svetstemperatur. Eventuellt racker det emellertid 'amen med att uppyarma dessa rullar till lamplig svetstemperatur. Eftersom denna svetsanordning ãr anbragt ovanfor sprutkanalen, ankommer sa.- lunda den fardigfOrslutna hylsan 27 till det av stalringen 28 och spruthuvudsdelarna 29 och 30 begransade ringmunstycket 33. I Oyrigt ar konstruktionen lika med den i fig. 1 beskrivna. Pa samma salt tillfores amen over borrningen 31 i delen 18 forpackningsgodset till den fardigkascherade slangen 32. Forpackningsholjet kan i tvarsektion -vara .cirkulart, ovalt, prismatiskt eller hava annan kimplig tvarsektion. In the stable, in order to supply a tea from the outside, one can also use a device according to Figs. 7-9, in which the annular spray channel 20 formed by the drilled core 18 and the jacket 19 has a lateral, horizontally bent branch 21 with a narrow nozzle 22, from which spray mass is constantly sprayed in the form of a wire, which enters the area between the holes 27 had overlaps 24, the layer in this branching channel on the spray head jacket and the bend in the Greek channel being so selected that the wire in the surfaces 24 which are to be welded together. The welding then takes place by means of the pressure rollers 25, 26 after previous heating of this thread to a welding temperature. It may, however, suffice 'amen to heat these rollers to a suitable welding temperature. Since this welding device is arranged above the spray channel, the pre-sealed sleeve 27 thus arrives at the annular nozzle 33 defined by the steel ring 28 and the spray head parts 29 and 30. In other respects the construction is the same as that described in Fig. 1. The same salt is supplied over the bore 31 in the part 18 to the packing material to the pre-laminated hose 32. In the cross-section, the packing casing can be circular, oval, prismatic or have another curved cross-section.

Claims

Patent application:

A method of continuously producing a thermoplastic laminated tube on the inside or a hose of paper for packaging liquid, powdered or granular goods, in particular food, the paper being fed to the tube or hose in a continuous form to a rounding tool and there to form the tube or hose with each other Overlapping longitudinal edges, which are connected to marandra, can be drawn valley. "that the paper tape is fed to the annulus in a spray head of a thermoplastic extruder and that at the same time Midas in the same annulus continuously on edge salt a thermoplastic hose of this kind, that the hose is surrounded in close contact with the paper tube or hose.

2. A kit according to claim 1, characterized in that a thread of preferably the same thermoplastic as that of the hose emerging from the nozzle annular ring is inserted continuously between the overlapping edges of the paper bundle and that the edges are welded together by this thread before the entry in the annular slot on edge set by using heat and pressure to form ay, it with longitudinal joint challenge the pipe or hose.

3. Device for conducting ay set according to patent claim 1, characterized in that the central supply channel in the spray head opens onto a suitably positioned guide ring. Over the spray head jacket radially penetrating channels in a circumferential ring slot arranged in this jacket, in March the hollow body serving outer ring body is arranged, which between the syringe head sheath delimits an annular gap corresponding to the thickness of the hollow body and the thickness of the plastic hose, from which the finished, laminated, tubular body extends in the direction of the syringe head axis.

Device according to patent claim 3, characterized in that pa. a .good.thick stifle Mom the area for the overlap and above- In the mantle of the spray head arranged a branch through this outwardly, at the side bent branch of the annular channel, through which branch enters an appropriately small part of the spray mass as a thin thread between the overlapping the surfaces of the hollow body, and that between the exit stall of this hollow and the intra-stall of the hollow body in the annular nozzle and the spray head are arranged two pressure rollers, which effect welding together of the salt-heated wire and the side edges of the hollow body.

Device according to claim 3 or 4, characterized in that the spray head mandrel contains a central channel for continuous supply of the packaging goods. Request Publications: U.S. Patent Nos. 2,592,658, 2,730,762, 2,767,431.