SE192796C1

SE192796C1 -

Info

Publication number: SE192796C1
Authority: SE
Publication date: 1964-01-01

Description

Uppfinnare: H Senior och J L Holden Prioritet begard frdn den 19 november 1959 och den 17 augusti 1960 (Storbritan- nien) Foreliggande uppfinning hanfor sag till ett forfarande for framstalining av forpackning- ar for vatskor, exempelvis mjolk, fruktsafter, oljor osv., degliknande eller andra halvfasta amnen, exempelvis glass, saint pulver °eh andra kornformiga material. Inventors: H Senior and JL Holden Priority requested from 19 November 1959 and 17 August 1960 (Great Britain). or other semi-solid substances, for example ice cream, saint powder and other granular materials.

Manga olika raetoder resulterande i olika produktsformer ha hittills framkommit vid sOkande efter bilHga vatskebehAllare for engangsanvandning. Ett valkant exempel aro vaxade behallare Mr mjalk. Dessa tidigare forsok ha emellertid 1 allmanhet icke vunnit nagon storre framgang pa grund av kostnaderna. Enligt uppfinningen astadkorames pa ett en:kelt salt en !praktisk och billig forpackRing av- ett termoplastiskt r8r darigenom, att yoret frammatas !stegvis varje gang med en for den fardiga forpackningen tillracklig langd over en avskarningsanordning och avskares i denna langd, varvid roret varje gang forses med en tvarforslutning, som forsluter varje forpaelmingsamne vid dess ena ande, varpa forpackningsamnet frdn den oppna An-den under fasthalining av derma aride och mottryck pa den slutna anden uppblases till den ofyllda fardiga forpackningen. Many different methods resulting in different product forms have so far emerged in the search for inexpensive disposable water containers. An optional example aro waxed container Mr milk. However, these previous attempts have generally not gained much success due to the costs. According to the invention, in a simple salt, a practical and inexpensive packaging of a thermoplastic tube is provided by advancing the tube stepwise each time with a length sufficient for the finished package over a cutting device and cutting it at this length, the tube each time provided with a transverse closure which closes each prepackage blank at its one end, the packing blank is thrown from the open end while retaining this arid and back pressure on the closed spirit is inflated to the unfilled finished package.

Anvandningen av ett material, som medgiver varmeforslutning av fOrpackningen, Ar givetvis fordelaktig ur framstallningssynpunkt, och lampligen anyandes lagtryckspolyeten eller polyeten ailed rak kolkedja, som giver stabila och formbestandiga forpackningar, sarat har den extra egenskapen, att etrt mycket vitt omrade av am.nen kan forpackas dari under lang lid utan lackage eller f8rorening. Materialen kan motstd relativt hoga och laga temperaturer, vilket gör detsamma lampligt for forpackning av saval varma som mycket kalla amnen samt exempelvis for lagring under djupfrysning. The use of a material which allows heat sealing of the package is of course advantageous from the point of view of manufacture, and suitably any other low pressure polyethylene or polyethylene ailed straight chain, which gives stable and dimensionally stable packages, has the additional property that a very wide area of the package can packaged in it for a long time without leakage or contamination. The materials can withstand relatively high and low temperatures, which makes the same suitable for packaging of hot as well as very cold items and for example for storage during deep freezing.

Dupl. hi. 81 c: 13; 81 c: 15; 81 c: 22 Ut8ver delta lampar sig Mr manga varor termoplaster av olika slag i killer eller ark, exempelvis polyeten, polypropylen, polykarbamater eller nylon, samt s. k. terinoplastlegeringar (dvs. blandningar av termoplaster), laminerade teranoplastarksmaterial eller andra arkmaterial, sasom metallfolier, papper, papp, regenererad cellofan, Overdragen med eft teranoplastmaterial. Dupl. hi. 81 c: 13; 81 c: 15; 81 c: 22 In addition to delta lamps, many products include thermoplastics of various kinds in killer or sheets, for example polyethylene, polypropylene, polycarbamates or nylon, as well as so-called terinoplast alloys (ie mixtures of thermoplastics), laminated teranoplastic sheet materials or other sheet materials, such as metal foils, paper , cardboard, regenerated cellophane, Coated with after teranoplastic material.

Vidare kunna kemiskt verksamma inne- hAildet material, som skall an- andas. Vid mineraloljor kan !exempelvis an- andas halvfast polyvinylklorid, som dr indifferent mot kemiskt angrepp av sadana 01j or. Furthermore, chemically active be able to contain material that must be breathed. In the case of mineral oils, for example, semi-solid polyvinyl chloride can be used, which is indifferent to chemical attack by such oils.

ROren for de individuella forpackningarna kunna ha olika utgangsform. Salunda kunna de vara tillplattade och exempelvis ha Mugsgaende veck eller vara utformade genom hopsvetsning av de langsgaende kanterna pa en rOrlig bana av skivformig termoplast. Utgangsrorat kan i tillplattad form vara upprullat pa en haspel eller kan framstallas konthruerligt, allteftersom forpackningsfabrika-Konen fortgar, exempelvis genom lindning av en termoplastbana kring en dorn och svetsning av den lindade banan till ett ror eller genom direkt strangpressning. The tubes for the individual packages can have different starting shapes. Thus, they can be flattened and, for example, have mug-like folds or be formed by welding the longitudinal edges together on a movable web of sheet-shaped thermoplastic. The starting tube may be flattened on a reel or flattened in a flattened manner as the packaging plant continues, for example by winding a thermoplastic web around a mandrel and welding the wound web to a tube or by direct extrusion.

Forpackningens botten begransas lampligen, sarskilt vid ror med tva inatriktade veck, av en enda tvargaende soul. Denna kan applaceras genom hopklamning av r5ret anellan uppvarmda backar, genom att fora roret melIan elektrodplattorna i en hogfrekvenssvets- anordning Coin materialets di-elektricitets- konstant gOr detta anojligt), genom hopklamning av roret mellan pressbackar och small- ning av anaterialet med en laza, eller pa annat sat. Bildningen av denna bottensiim kan genomforas vasentligen samtidigt aired eller 2— — fore eller efter avskiljningen av forpackningsAmnet fran forrhdet av rorformigt utgangsmaterial. The bottom of the package is aptly bordered, especially on rows with two unfolded folds, by a single transverse soul. This can be applied by clamping the tube to the heated jaws, by passing the tube between the electrode plates in a high frequency welding device (the constant electrification of the material (this makes this possible), by clamping the tube between press jaws and narrowing the material with a laza, or otherwise. The formation of this bottom seam can be carried out substantially simultaneously aired or 2 - before or after the separation of the packaging blank from the supply of tubular starting material.

Principen att utvidga med gas kan med for-del kombineras med en lure gasbehandling av forpackningen, exempelvis genom anfandning av en steriliserande gas eller en neutral gas, exempelvis kvave, sasom inblasningsmedium. The principle of expanding with gas can advantageously be combined with a tricky gas treatment of the package, for example by using a sterilizing gas or a neutral gas, for example nitrogen, as a blowing medium.

Pet torde inses, att det stadium under framstallningen av fOrpaekningen, vid vilket den ovre Anden tilislutes, beror pa den metod som anyandes for pafyllning av forpackningen. Sdlunda kan forpackningen efter att ha (Or-setts med med sin. bottenforslutningssdm fyllas genom sin oppna overdel och den senare dArefter forslutas, eller kan sedan overdelen fiirst forslutits pafyllning ske genom en lippning, som astadkommits genom perforering eller slitsning i en vagg pd. forpackningen. It will be appreciated that the stage during the preparation of the package at which the upper spirit is connected depends on the method of any other for filling the package. Thus, after having been sealed with its bottom closure sdm, the package can be filled through its open top and the latter subsequently closed, or after the top has been first sealed, filling can be effected by a lip, which is achieved by perforation or slitting in a cradle on the package. .

Fyllning av fOrpackningen genom den Oppna overdelen kan med fordel utforas omedelhart efter utbredningen av bottnen, och forpackningen Mlles lampligen ph samma satt och medelst samma anordningar under bhda dessa operationssteg. Filling of the package through the open upper part can advantageously be carried out immediately after the spread of the bottom, and the package is suitably filled in the same way and by means of the same devices during both of these operating steps.

En avrivningstunga eller liknande kan anbringas Over en oppning eller en forsvagning, som tidigare utformats i den Ovre delen av forpackningen eller forpackningsamnet och som kan genombrytas (Or att medgiva till-trade till det inre av forpackningen, ndr avrivningstungan avlagsnats av anvandaren. SdWilda kan exempelvis en forsvagning ay halveirkular V- eller Worm inpressas i vaggen pA forpackningen i ett stadium fore fyllningen av densamma. A tear-off tongue or the like can be applied over an opening or weakening previously formed in the upper part of the package or package blank and which can be pierced (or to allow trade to the inside of the package when the tear-off tongue has been removed by the user. a weakening of the semicircular V or Worm is pressed into the cradle on the package at one stage before filling it.

Enligt ett alternativ kan. forslutningen dstadkommas medelst en avrivningsremsa, som anbringas Over den Ovre Anden av det rorformiga forpackningsdmnet. Detta arrangemang dr sarskilt anvd.ndbart dd. en stor oppning erfordras, sasom n5.r forpackningen anvandes for glass. According to an alternative can. the closure is provided by means of a tear-off strip, which is applied over the upper end of the tubular packaging blank. This arrangement is particularly useful. a large opening is required, as when the packaging is used for glass.

Vidare torde inses, att den ovre och undre Anden ay forpackningsamnet kunna sammansvetsas mid andra stadier under tillverkningen An som ovan angivits. Furthermore, it will be appreciated that the upper and lower spirits of the packaging blank may be welded together at other stages during the manufacture of An as indicated above.

Det torde aven inses att behandlingar utOver de heskri-vna, exempelvis tryckning, kunna utforas ph utgangsmaterialet, ph forpackningsamnena eller pd forpackningarna. It should also be understood that treatments in addition to those described, for example printing, can be carried out on the starting material, on the packaging blanks or on the packaging.

Ett faredraget utforingsexempel pa forfarandet enligt uppfinningen samt typiska slutprodukter, som erhallas ddrigenom, askddliggoras pd. bifogade ritningar. A hazardous embodiment of the process according to the invention as well as typical end products obtained thereby are asymptomatic. attached drawings.

Fig. 1 dr en vy i perspektiv av ett fiirsta stadium yid avskiljandet ay ett individuellt forpackningsamne frail ett sammanhangande stycke av utgangsmaterial. Fig. 2 askadliggor tvh efterfoljande steg I framstallningen av forpackningen. Fig. 3 Askhdliggor en senare procedur, namligen en bottenutbredningsprocedur. Fig. 4 askadliggor det stadium, vari forpackningen fylles med sitt avsedda inne hall. Fig. 5 askadliggor det generella utseendet av en typ av forpackning enligt foreliggande uppfinning. Fig. 6 -visa" den Ovre delen av en modifierad fOrpackning. Fig. 1 is a perspective view of a first stage in the separation of an individual packaging blank from a continuous piece of starting material. Fig. 2 shows ash ashes following subsequent steps in the production of the package. Fig. 3 Asks a later procedure, namely a bottom spreading procedure. Fig. 4 shows the stage at which the package is filled with its intended indoor hall. Fig. 5 shows the general appearance of a type of package according to the present invention. Fig. 6 - show the upper part of a modified package.

Vid den metod, som nu kommer att beskrivas, bildas amnena for de individuella forpackningarna genom successiv avklipp- ning av stycken av ett tillplattat veckat ror 1 av halvfast polyeten. Vid genomforande av 'derma operation frammatas riiret 1 intermit- tent med erforderlig dmneslangd genom en avklippningsanordning 2 till en rorstodanord- ning innefattande ett bord 3. Itoret 1 fares genom en slits 4 i anordningen 2 och den aktuella avskiljningen utfdres av en kniv 5, vars avklippningsslag Ar tidsinstallt i forhal- lande till rdrets rorelse. Stodanordningen innefattar vidare en gripanordning, som visas i fig. 1 i forenklad form, bestaende ay en stodpiatta 6 samt ett par gripklor eller backar 7, vilka ingripa i langsgaende meek 8 i rOret 1 och rora sig mot den framre kanten pd. plattan 6 far att pressa den bakre sidoytan hos amnet 9 mot pin tan. I detta Idge avklippes stycket 9 1 sjalva verket i delvis utvecklat tillstand. In the method which will now be described, the blanks for the individual packages are formed by successively cutting off pieces of a flattened pleated tube 1 of semi-solid polyethylene. In carrying out this operation, the tube 1 is fed intermittently with the required tube length through a cutting device 2 to a rudder device comprising a table 3. The tube 1 is passed through a slot 4 in the device 2 and the actual separation is performed by a knife 5, the clipping type Is timed in relation to the movement of the council. The support device further comprises a gripping device, shown in Fig. 1 in simplified form, consisting of a support pawl 6 and a pair of gripping claws or jaws 7, which engage in longitudinal meek 8 in the tube 1 and move towards the front edge pd. the plate 6 is allowed to press the rear side surface of the blank 9 against the pin tan. In this Idge, paragraph 9 1 is cut off itself in a partially developed state.

Stddanordningarna bringa darefter det aysikurna amnet 9 i det angivna tillstandet ldge for en vdrmeforseglingsanordning, soul framstaller en tvarghende sOm tvars Over hela bredden pd. den undre Anden av amulet, dvs. den avsedda bottnen ph den fArdiga fOrpackningen, och fOrenar ddrigenom vecken samt ,framre och bakre vaggen av rorstycket. Detta askadliggiires i fig. 2, van i antages att gripanordningen 6, 7 har overfort styeket 9 till ett Idge, i vilket ett par uppvarmda backar 10 rdra sig inat for att hstadkomma ovannamnda tvarghende Fig. 2 hska'dliggor Avon ndsta stadium i proceduren, marl ett stOd i form av en skena 11 infores genom den oppna, Ovre Anden av Am-net 9 och bildar stdd fOr ett stansverktyg 12, Isom pressas mot den Ovre delen av den frdm- re rorv5.ggen med en kraft, som Ar tillracklig f5r att eggen 13 pa verktyget skall kunna astadkomma en halvcirkular forsvagningslinje 14 men joke en verklig perforering i vaggen. The support devices then bring the aysikurna blank 9 in the specified condition ldge for a heat sealing device, soul produces a transverse sOm transversely across the entire width of pd. the lower Spirit of the amulet, viz. the intended bottom of the finished package, thereby removing the folds and the front and rear cradles of the pipe piece. This is illustrated in Fig. 2, it is assumed that the gripping device 6, 7 has transferred the support 9 to an Idge, in which a pair of heated jaws 10 move inwards to achieve the above-mentioned transverse hand. But a support in the form of a rail 11 is inserted through the open, upper spirit of the Amnet 9 and forms a support for a punching tool 12, which is pressed against the upper part of the former rudder 5 with a force which is sufficient. for the edge 13 of the tool to be able to achieve a semicircular weakening line 14 but joke a real perforation in the cradle.

I nasta stadium (fig. 3) infores ett blasror 15 i den opmna hdlften ay den ovre Anden av farpackningsamnet 9, och ett klamblock 16 Ores mot framsidan av denna Ovre anddel for att tillsluta densamma kring roret 15. In the next stage (Fig. 3) a blower 15 is inserted into the raised half of the upper end of the packing blank 9, and a staple block 16 is inserted towards the front of this upper part to close it around the tube 15.

Den ovre delen ay det veckade forpackningsamnet kvarhalles i detta stadium ay gripan- ordningen 6, 7. Luft eller en inert gas under tryck biases genom roret in i Amnet 9 under utvidgande av detsamma och oppnande ay vecken 8. Ett mottryck anvandes for att understodja denna operation genom forflyttning av en sparrplatta 17 mot den undre Auden av forpackningen, som nu ar tillsluten genom sonunen 18, som utforts mellan bacicarna 10. — —3 Platt= 17 sakerstaller att bottenthornen pa forpackningen bildas pa riktigt satt och tja- nar samtidigt till att pressa upp varje utskjutande kant, sasam 19, som kan stracka sig nedat fran sommen 18. The upper part of the pleated packaging blank is retained at this stage in the gripping device 6, 7. Air or an inert gas under pressure is biased through the tube into the blank 9 while expanding the same and opening the folds 8. A back pressure was used to support this operation by moving a ratchet plate 17 towards the lower Auden of the package, which is now closed by the sonun 18, which is carried out between the bases 10. - —3 Plate = 17 ensures that the bottom corners of the package are formed properly and at the same time serve to push up any protruding edge, sasam 19, which may extend downward from the seam 18.

Behallaren är nu iordningstalld for palyllning toch i nasta steg (fig. 4) infores ett rot- i den halvt Oppaa, -vre anden av forpackningsamnet 9, som fortfarande kvarhalles av gripanordningen 6, 7, och forpackningens framre vagg klammes mot detta ror 20 av en skena 21. The container is now ready for filling and in the next step (Fig. 4) a root is inserted into the half Oppaa, upper spirit of the packaging blank 9, which is still retained by the gripping device 6, 7, and the front cradle of the package is clamped against this tube 20 by a rail 21.

Nar tforpackningen fyllts aned det avsedda innehallet och roret 20 avlagsnats, slutes for- packningen i foreliggande fall medelst upp- varinda backar 22 (fig. 5), satin astadkomma en svetssom, tvars over den ovre forpack- ningskanten, dvs. forenar den framre och bakre vaggen med varandra och angransande veck. When the packaging has been filled with the intended contents and the tube 20 has been deposited, the packaging is closed in the present case by means of heated jaws 22 (Fig. 5), satin to provide a weld, across the upper packaging edge, ie. unites the front and rear cradles with each other and adjacent folds.

FOr detta anclamal kunna griporganen 7 svangas At sidan, ,sa att de kunna passera fram om den framre forpackningsvaggen och darefter ater svangas tillbaka for att draga den framre vaggen bakat under forslutningen me-deist forslutningsbackarna 22. For this purpose, the gripping means 7 can be pivoted to the side, so that they can pass forward about the front packing cradle and then swung back again to pull the front cradle backwards during closing with the closing jaws 22.

I nasta steg fastes den nedre delen av en tunga 23, exempelvis av metallfolie overtackt med polyetentermoplast, vid forpackningen Over forsvagningslinjen 14, varvid den ovre delen air denna tunga star ut, sa att densam- ma med latthet tkan gripas av anvandaren och avrivas for att medgiva atkomst till den avsedda oppningen i den forslutna behallarem Pet underflirstas aft de beskrivna stegen 1 forfarandet kunna utforas i automatisk foljd i en maskin, marl ett flertal forpackningar kunna behandlas i fOljd. In the next step, the lower part of a tongue 23, for example of metal foil covered with polyethylene thermoplastic, is attached to the package. allow access to the intended opening in the closed container strap.

Del underfOrstas Oven att modifikationer av uppfinningen Oro mojliga. Exempelvis skulle utvidgningen ay bottendelen av behal- laren under den beskrivna operationsfoljden vissa fall 'canna astadkommas enbart ay pftfyllningsmaterialet, nar materialet i forpack- ningen, tatheten hos pfifyllningsanaterialet och del tryck, vid vilket detsamma infOres, tillater delta. It is also understood that modifications of the invention are possible. For example, the expansion of the bottom part of the container during the described sequence of operations could in some cases be achieved only in the filling material, when the material in the package, the tightness of the filling material and some pressure, at which the same is introduced, allow to participate.

I stallet for att astadkomma en slutlig forslutning genom en tvargaende som sasom beskrivits, kan denna fOrslutning istffllet ha formen ay en ramsa, sona. fakes Over de narbelagna ovre kanterna hos forpackningen. Ett exempel harpa. visas i fig. 6, mart forpackningen antages vara fylld med ett material, exempelvis glass, for vilket det Or onskvart aft ha en stor Oppning, nar forpackningen anvandes. Ay delta skill utelanantas steget att forsegla den Ovre anden am behallaren, vilket gjorts i foregaende utforingsform, och en remsa 24 a-v lampligt material, exempelvits av metallfolie eller styvt papper, a.nbringas Over lagren av fOrpackningsmatenial mid den ovre anden av forpackningen. Denna remsa kan vara anordnad att avrivas for atkomst till det hire av fOrpackningen. Instead of providing a final closure through a transverse end as described, this closure may instead have the shape of a rhyme, zone. fakes Over the scarred upper edges of the package. An example harp. is shown in Fig. 6, but the package is assumed to be filled with a material, for example glass, for which it is desirable to have a large opening when the package is used. In this case, the step of sealing the upper spirit container, as done in the previous embodiment, and a strip 24 of suitable material, for example of metal foil or rigid paper, is applied over the layers of packaging material in the upper spirit of the package. This strip can be arranged to be torn off for access to the rental of the package.

Claims

Patent claim:

Procedure For forming a package into a fermoplastic tube, characterized in that the tube (1) is advanced stepwise each time with a sufficient length for the finished package over a cutting device (2) and is cut to this length. , each time the tube is provided with a transverse closure, which closes each packing rune (9) yid its one end, warping the packing object from the open spirit while holding on to this spirit and inflating the closed spirit to the ofyilda finished packaging.

2. A method according to claim 1, characterized in that the internal pressure is applied by blowing in a purge gas.

A method according to claim 1 or 2, characterized in that the package is formed of a tube-like packaging blank (9) with two aligned longitudinal meek (8), the packaging blank first having a pair of clamping jaws (6, 7), which: intervene I sift meek and grasp the cover on the side of the folds covered with the packing blank, while in the packing blank between its free part and the folds first a Tor (15) is inserted to blow in an expanding medium and drop a tube (20) for filling in the liquid or the fixed contents of the expanding package, after which the clamping jaws are installed to close the folds (8).

Method according to claim 3, characterized in that while the packaging blank (9) is held by the engagement of the clamping jaws (6, 7) in the folds (8) and with the part of the packaging blank coated on the said one side of the folds, a stand (11) is inserted into The package between the folds and the said free part, in which by means of a punching tool (12) a line (14) is pressed or perforated, which delimits an access tongue and which is finally thanked by means of a tear-off tongue (23) or the like. Cited publications: Patents Iran S-Sweden 146 782; France 966 324; United Kingdom 757691; Germany 607192; USA 2,307,902, 2,562,389.