SE190161C1

SE190161C1 -

Info

Publication number: SE190161C1
Authority: SE
Publication date: 1964-01-01

Description

Uppfinnare: D VanDike Benfer, R B Gardner och H 0 Woolley Jr Prioritet begard fra'n den 19 augusti och 18 september 1958 (USA) Problemet att tillsluta exempelvis plastslangar och plastpasar, tillverkade av t. ex. polyvinyl- eller polyetenplast, sá att man erhailer oppningsbara forseglingar, som aro saval vatske- som lufttata, har visat sig vara svarlOst, vilket dr en av anledningarna till att dylika material icke kommit till mera vidstrackt anyandning mom exempelvis livsmedelforpackningsindustrin. Syftet med foreliggande uppfinning har varit att astadkomma en oppningsbar forseglingsanordning for forpackningar o. d. icke endast av dessa material, utan av bojligt, mjukt material overhuvudtaget, ehuru uppfinningen i forsta hand avser en dylik forseglingsanordning for pasar, hylsor eller slangar av plastfolie jamte ett forfarande for framstdllning av densamma. Inventors: D VanDike Benfer, R B Gardner and H 0 Woolley Jr Priority requested from 19 August and 18 September 1958 (USA) The problem of closing, for example, plastic hoses and plastic passes, made of e.g. polyvinyl or polyethylene plastics, so as to obtain openable seals, which are both liquid and airtight, have been found to be unresponsive, which is one of the reasons why such materials have not become more widely used in, for example, the food packaging industry. The object of the present invention has been to provide an openable sealing device for packages or not only of these materials, but of flexible, soft material in general, although the invention primarily relates to such a sealing device for fits, sleeves or hoses of plastic foil as well as a process for manufacturing of the same.

Den oppningsbara forseglingsanordningen enligt uppfinningen är av den forut kanda typ, som innefattar en tillslutningsdetalj i form av en hylsa sluten platremsa, som med inbordes Overlappande kantpartier omsluter fOrpackningsmaterialet mellan planparallella vaggdelar, varvid varje plan vaggdel iir uppdelad i tva. partier genom en list (vulst) eller ett spar, som strdcker sig i tvarled Over tillslutningsdetalj en, on denna forseglingsanordning utmarkes enligt uppfinningen sdrskilt darav, att ett oppet andparti av forpackningsmaterialet inuti tillslutningsdetaljen iir sammantaget till en kompakt massa mellan minst tva par parvis i huvudsak kongruenta, mitt-for varandra belagna, planparallella vaggpartier, som stracka sig kontinuerligt Over tillslutningsdetalj ens hela bredd, och att namnda list (vulst) eller spar utgores av ett krokt vaggparti, som med oforondrad hajd resp. djup stracker sig kontinuerligt Over tillslutningsdetalj ens hela bredd. FOrseglingsanordningen enligt uppfinningen kan utf8ras manga olika former, men dessa kunna i stort sett indelas i tva kategorier, namligen sadana, dar de hada plana vaggytorna pa samma sida om det omslutna forpackningsmaterialet ligga i huvudsak i ett och samma plan, och sadana, dar de plana vaggytorna pa en och samma sida om det omslutna forpackningsmaterialet icke ligga 1 ett och samma plan. I sistnamnda fall kanneteeknas anordningen foretradesvis av att tillslutningsdetaljen bildar tre par parvis i huvudsak kongruenta och parallella, plana partier, varvid de tre pa samma sida om foremalet belagna plana partierna aro fOrenade tva och tva genom tva kriikta partier pa sadant salt, att tillslutningsdetalj en (hylsan) uppvisar i huvudsak Z-formig langdsnittsprofil. The openable sealing device according to the invention is of the prior art, which comprises a closing detail in the form of a sleeve closed plate strip, which with inboard overlapping edge portions encloses the packaging material between plane-parallel cradle parts, each flat cradle part being divided into two. portions through a strip (bead) or a groove extending transversely. Over closure member one, this sealing device is defined according to the invention separately from the fact that an open end portion of the packaging material inside the closure member is in total a compact mass between at least two pairs in pairs substantially congruent, mutually spaced, plane-parallel cradle portions, which extend continuously over the entire width of the closing detail, and that the said strip (bead) or spar is formed by a curved cradle portion, which with unaltered shear resp. depth extends continuously Over closing detail even the entire width. The sealing device according to the invention can be embodied in many different forms, but these can be broadly divided into two categories, namely those where they had flat cradle surfaces on the same side of the enclosed packaging material lying substantially in one and the same plane, and such where the planes the cradle surfaces on one and the same side if the enclosed packaging material does not lie in one and the same plane. In the latter case, the device may preferably be characterized in that the closing member forms three pairs in pairs of substantially congruent and parallel, flat portions, the three flat portions coated on the same side of the object being united two and two by two correct portions on such salt, that closing member one ( sleeve) has a substantially Z-shaped longitudinal sectional profile.

De krokta partierna kunna ha inbordes samma eller inbordes motsatta krokningsriktningar: I forra fallet bilda de hada motsvarande krokta partierna en korrugering, som loper tvarsover tillslutningsdetaljen, och i senare fallet bilda de en vulst tvarsover denna details samtliga sidor. Ett forfarande for framstallning av en forseglingsanordning av den fOrstnamnda typen kdnnetecknas av att en tillslutningsdetalj i form av en platremsa lagges runt det sammantagna fOrpackningsmaterialet, sa att detta thorn tillslutningsdetaljen sammantryckes till en kompakt massa och sa all tillslutningsdetalj ens motande kantpartier overlappa varandra, att tillslutningsdetaljen jdinte det av densamma omslutna materialet tillplattas till en kompakt enhet, som begrdnsas av minst tva i huvudsak parallella, plana vdggdelar av tillslutningsdetaljen, och att en dubbelsidig korrugering darefter utformas tvarsover den hylsformigt slutna tillslutningsdetalj en. Enligt en modifierad form av detta forfarande for framstallning av en forseglingsanordning av den andra typen lagges en tillslutningsdetalj i form av 2— platremsa med en i remsans lfingdriktning forlapande, vulstformig forstarkningslist runt det sammantagna farpackningsmaterialet, sa att detta inora tillslutningsdetalj en sammantryckes till en kompakt massa och sit att till- slutningsdetalj ens matande kantpartier over- lappa varandra, och att tillslutningsdetaljen jamte det av denna omslutna materialet hoptryckes till en kompakt enhet, som i tvfirsnitt dr i huvudsak rektangulfir med forstarkningslisten lapande kring den hylsformigt slutna tillslutningsdetalj ens utsida. The curved portions may have the same inboard or opposite inward curving directions: in the former case the had corresponding curved portions form a corrugation which runs across the closing part, and in the latter case they form a bead across all sides of this detail. A method of manufacturing a sealing device of the former type is characterized in that a closure member in the form of a plate strip is placed around the entire packaging material, so that this thorn closure member is compressed into a compact mass and so all closure member even opposite edge portions overlap the material enclosed therefrom is flattened into a compact unit bounded by at least two substantially parallel, planar wall portions of the closure member, and a double-sided corrugation is then formed across the sleeve-shaped closure member. According to a modified form of this method for manufacturing a sealing device of the second type, a closure member in the form of a 2-plate strip with a bead-shaped reinforcing strip extending in the direction of the strip is laid around the overall packing material, so that this inner closure member is compressed into a compact. and sit that the closing part of the feeding part overlaps each other, and that the closing part together with the material of this enclosed material is compressed into a compact unit, which in two sections is mainly rectangular in shape with the reinforcing strip lapping around the sleeve-shaped closed closing part.

Nagra som exempel valda utforingsformer av uppfinningen skola i det faljande nfirmare beskrivas i anslutning till bifogade ritning, varvid: Fig. 1 1 perspektiv visar en platbygel, som anvandes sum tillslutningsdetalj enligt en utforingsform av uppfinningen; fig. 2 visar platbygeln enligt fig. 1 i andvy och i ffird med att anbringas kring hopveckat, bajligt material; fig. 3 dr en sidovy med vissa delar i snitt och askadliggor utformningen av en tvarkorrugering i en platbygel, sedan den anbragts I enlighet med fig. 2; fig. 4 visar i perspektiv en tillslutningsdetalj, sedan den av platbygeln enligt fig. 1 framstfillts och deformerats genom de i fig. 2 och 3 ask adliggjorda operationerna; fig. 5 ãr en sidovy, som askadliggara den .samtidiga utformningen av tva tvarkorrugeringar i en tillslutningsdetalj, sedan den omlagts i enlighet med fig. 2; fig. 6 ãr en perspektivbild av en tillslutningsdetalj efter utformningen av tvarkorrugeringarna eller veckningarna enligt fig. 5; fig. 7 visar i perspektiv en annan typ av platbygel, som anvandes som tillslutningsdetalj enligt en annan utforingsform av uppfinningen; fig. 8 visar i perspektiv ett par klambackar, bildande ett verktyg for utformning av en tillslutningsdetalj och utforande av en forsegling med hjalp av platbygeln enligt fig. 7; fig. 9 visar i tvarsnitt en farsegling, utford med tillslutningsdetaljen enligt fig. 7 och med hjalp av det i fig. 8 visade verktyget, och fig. 10 visar i perspektiv en annan f8rsegling, utford med tillslutningsdetaljen enligt 'fig. 7. Some exemplary embodiments of the invention will be described in the following description in connection with the accompanying drawing, in which: Fig. 1 1 perspective shows a plate bracket, which used a total closing detail according to an embodiment of the invention; Fig. 2 shows the plate bracket according to Fig. 1 in front view and in the process of being applied around folded, flexible material; Fig. 3 is a side view with certain parts in section and ash-forming the design of a cross-corrugation in a plate bracket, after it has been applied in accordance with Fig. 2; Fig. 4 shows in perspective a closing detail, after it has been produced and deformed by the plate bracket according to Fig. 1 by the operations illustrated in Figs. 2 and 3; Fig. 5 is a side view showing the simultaneous configuration of two transverse corrugations in a closure member after it has been rearranged in accordance with Fig. 2; Fig. 6 is a perspective view of a closure detail after the design of the cross-corrugations or folds according to Fig. 5; Fig. 7 is a perspective view of another type of plate bracket used as a closure member according to another embodiment of the invention; Fig. 8 is a perspective view of a pair of clamping jaws forming a tool for forming a closure member and performing a seal by means of the plate bracket of Fig. 7; Fig. 9 shows in cross section a sealing, challenge with the closure part according to Fig. 7 and with the aid of the tool shown in Fig. 8, and Fig. 10 shows in perspective another seal, challenge with the closure part according to Figs. 7.

Den i fig. 1 visade tillslutningsdetaljen utgores av en olikskanklig platbygel med en batten 2, en bredare sida 4 och en smalare, latt inatbajd sida 6. Vid sin ena dude är platbygeln utformad med en utkragning 8, som bildar en trattliknande mynning vid forseglingens ena ande. Bygeln fir f6rsedd med ett invandigt boiler 10, som tacker dess hela insida och fir bundet vid denna. Detta foder kan besta av vilket som heist material, som utan svarighet bringas till kallflytning under tryck och foretradesvis bestar av ett termoplastmaterial; bland andra anvandbara material markas gummi, mjukmetall, exempelvis bly, samt isolerband. The closing part shown in Fig. 1 consists of a non-shank plate bracket with a batten 2, a wider side 4 and a narrower, slightly inwardly bent side 6. At one dude the plate bracket is formed with a cantilever 8, which forms a funnel-like mouth at one of the seals. Spirit. The jumper is fitted with an internal boiler 10, which attaches to its entire inside and is attached to it. This liner may consist of any hot material which is irresponsibly brought to cold flow under pressure and preferably consists of a thermoplastic material; Among other useful materials are rubber, soft metal, for example lead, and insulating tape.

Da platbygeln skall lindas om ett bajligt material, hoptages detta lost och placeras i bygeln, sasom visas i fig. 2. Bygeln och det bojliga materialet plattas darefter till, sasom visas i fig. 2, varvid den bredare bygelsidan 4 infores under den smalare sidan 6, sa att by- gelns ytterkantspartier 8verlappa varandra. When the plate bracket is to be wrapped around a flexible material, this loss is collected and placed in the bracket, as shown in Fig. 2. The bracket and the flexible material are then flattened, as shown in Fig. 2, the wider bracket side 4 being inserted under the narrower side 6, so that the outer edge portions of the yoke 8 overlap.

Fodret 10 tjanstgor som ett slitskydd mellan det omfattande materialet och platen och bi- drar till att bilda en kompakt massa inuti by- geln. Fodrets gods tenderar °ash att genom trycket pressas ut utanfor bygelns andar och In i farseglingsfogen mellan bygeln och det omslutna materialet, sa att det sistnfimnda skyddas fran beraring med eventuellt skarpa platkanter; till denna skyddsverkan bidrar ocksa bygelns utkragning 8. The lining 10 serves as a wear protection between the extensive material and the plate and helps to form a compact mass inside the stirrup. The goods of the lining tend to be pressed out of the spirits of the yoke and into the sealing joint between the yoke and the enclosed material by the pressure, so that the latter is protected from contact with any sharp plate edges; the cantilever cantilever 8 also contributes to this protective effect.

Sedan bygeln och det omslutna materialet ha plattats ut till en kompakt massa, kunna de, sasom visas i fig. 3, deformeras mellan ett par klambackar 24 och 26. Backen 24 uppvivisar ett par tryckytor 28 och 30, skilda at genom ett halrum 32. Den andra klambacken 26 uppvisar en tryckyta 34, som iir belfigen mittfor halrummet 32. Tryckytorna 38, 30 och 31 firo rundade far att icke skada platbygeln under deformeringsforloppet. P0. klambacken 26 finnas ett par rundade motlagerytor 36 och 38. Vid deformeringen av den tillplattade by- geln jdmte det omslutna materialet bildas en. korrugering eller ett veck, som stracker sig tvarsover tillslutningsdetalj ens hada flatsidor. After the bracket and the enclosed material have been flattened into a compact mass, they can, as shown in Fig. 3, be deformed between a pair of clamping jaws 24 and 26. The jaw 24 has a pair of pressure surfaces 28 and 30, separated by a cavity 32. The second clamping jaw 26 has a pressure surface 34 which is located in the bellows opposite the cavity 32. The pressure surfaces 38, 30 and 31 are rounded so as not to damage the plate bracket during the deformation process. P0. the clamping jaw 26 is a pair of rounded counter bearing surfaces 36 and 38. Upon deformation of the flattened bracket with the enclosed material, one is formed. corrugation or a crease, which extends across the closing detail even had flat sides.

Det omslutna materialet (se fig. 4) ãr i bygeln inneslutet mellan tva par i huvudsak kongruenta, parallella och mittfOr varandra belfigna plana platpartier 12, 14 resp. 16, 18. De plana platpartierna 12, 16 och 14, 18 pa amse sidor am det inlagda materialet aro for- enade genom i huvudsak lika, parallella, krokta partier 20 och 22, som stracka sig tvarsover tillslutningsdetaljen. Partiet 12 ligger i huvudsak i sanuna plan som partiet 16, varjamte partiet 14 ligger i huvudsak i samma plan som partiet 18. The enclosed material (see Fig. 4) is enclosed in the stirrup between two pairs of substantially congruent, parallel and mutually resilient flat plate portions 12, 14 and 14, respectively. 16, 18. The flat plate portions 12, 16 and 14, 18 on either side of the inlaid material are joined by substantially equal, parallel, curved portions 20 and 22, which extend across the closure member. The portion 12 lies substantially in the same plane as the portion 16, while the portion 14 lies substantially in the same plane as the portion 18.

Sasom visas i fig. 5 och 6, kan man ocksa bibringa fOrseglingen en dubbel korrugering efter att bygeln har plattats till. Harvid erhallas tre par inbordes parallella, plana ytor, och den erhallna forseglingen far i huvudsak Zformig lfingdsnittsprofil. As shown in Figs. 5 and 6, the seal can also be given a double corrugation after the yoke has been flattened. In this case, three pairs of inboard parallel, flat surfaces are obtained, and the resulting seal has a substantially Z-shaped living section profile.

Den i fig. 7 askadliggjorda platbygeln har en flat batten 40, en smalare uppstaende sida 42 och en bredare uppstaende sida 44. Bygelsidan 44 uppvisar ett nagot inatbockat kantparti 46. En list 48 loper pa bygelns utsida fran ytterkanten pa sidan 42 nedat runt bottnen 40 och upp Over sidan 44 till nfirheten av dennas kant men icke Over det avvinklade kantpartiet 46. Denna platbygel har, liksom bygeln enligt fig. 1, invandigt ett foder 50 av ett mera elastiskt material (t. ex. ett termoplastmaterial). Bygelns ena ande fir forsedd — —3 med en utkragning 51, som i den slutna hylsan bildar en trattformig mynning. The plate shackle damaged in Fig. 7 has a flat butt 40, a narrower upright side 42 and a wider upright side 44. The shackle side 44 has a slightly bent-in edge portion 46. A strip 48 runs on the outside of the shackle from the outer edge on the side 42 down around the bottom 40. and up Over side 44 to the vicinity of its edge but not Over the angled edge portion 46. This plate brace, like the brace of Fig. 1, internally has a liner 50 of a more elastic material (e.g. a thermoplastic material). One end of the stirrup is provided - —3 with a cantilever 51, which in the closed sleeve forms a funnel-shaped mouth.

Ovre delen av en plastpase hoptages och placeras i den bygelformiga tillslutningsdetaljen, vilken darefter slutes till en hylsa i det I fig. 8 visade verktyget. Dena bestar av en konvex klamback 52, forsedd med tva tryckytor 54 och 54' och ett mellan dessa befintliga urtag 56, samt en konkav klamback 58 med motsvarande tryckytor 60, 60', atskilda av ett urtag 62. Tillslutningsdetaljen jamte det omslutna pasmaterialet placeras i verktyget pa sadant Ott, att listen 48 pa bygelns botten 40 vilar i urtaget 56. Da den konkava klambacken 58 sammanfores med den konvexa 52, komma listerna 48 pa bygelsidorna 42 och 44 forst att infalla i urtaget 62. Under den fortsatta slutningsrorelsen slutes bygeln. kring pasmaterialet, sa att det avvinklade bygelpartiet infores under ytterkanten p. bygelsidan 42 och bygeln jamte pasmaterialet tryckes samman till en kompakt massa. Den darvid erhallna forseglingen liar i huvudsak rektangulart tvarsnitt, sasom visas i fig. 9, varvid listen 48 bildar en periferiell forstyvningsvulst runt den salunda bildade tillslutningshylsan. I foreliggande fall aro de bfida paren av plana ytpartier forenade inbordes genom vagformiga partier med inb8rdes motsatta krOkningsriktningar. The upper part of a plastic pass is picked up and placed in the stirrup-shaped closing part, which is then closed to a sleeve in the tool shown in Fig. 8. It consists of a convex clamping jaw 52, provided with two pressure surfaces 54 and 54 'and one between these existing recesses 56, and a concave clamping jaw 58 with corresponding pressure surfaces 60, 60', separated by a recess 62. The closing part and the enclosed fitting material are placed in the tool so that the strip 48 on the bottom 40 of the bracket rests in the recess 56. When the concave clamping jaw 58 is joined to the convex 52, the strips 48 on the bracket sides 42 and 44 first fall into the recess 62. During the continued closing movement the bracket closes. around the fitting material, so that the angled jumper portion is inserted under the outer edge on the jumper side 42 and the jumper and the fitting material are compressed into a compact mass. The resulting seal has a substantially rectangular cross-section, as shown in Fig. 9, with the strip 48 forming a peripheral stiffening bead around the thus formed closure sleeve. In the present case, the two pairs of planar surface portions are joined together by vaginal portions with mutually opposite directions of curvature.

Sasom framgar av fig. 9, är fOrseglingens Oversida i huvudsak plan. Enligt den i fig. 10 visade varianten ar bygelsidan 44 icke awinklad vid 46 som enligt fig. 7, varjamte den konkava klambackens botten fir utvidgad for upptagande av den vid slutningen awinklade delen av bygelsidan. 42. As can be seen from Fig. 9, the upper side of the seal is substantially flat. According to the variant shown in Fig. 10, the stirrup side 44 is not angled at 46 as in Fig. 7, and the bottom of the concave clamping jaw is widened to receive the part of the stirrup side which is angled at the end. 42.

Det ar lampligast att pa visat satt utforma listen 48 i forvag och pa sadant sfitt, att den fir likformig till hela sin langd; om listen eller vulsten 48 skulle utformas fOrst i klamverktyget, skulle den bli hoptryckt i bygelhOrnen och darfor icke forstarka eller forstyva tillslutningsdetaljen I lika hog grad. It is most expedient to design the strip 48 in the manner shown in advance and in such a way that it is uniform in its entire length; if the strip or bead 48 were to be formed first in the clamping tool, it would be compressed in the bracket corners and therefore not strengthen or stiffen the closure part to the same degree.

Claims

Attention:

Openable sealing device for packaging etc. of thin, soft material, e.g. plastic foil sleeves, sleeves or hoses, comprising a closing part in the form of a plate strip closed to a sleeve, which with inboard overlapping edge portions encloses the packaging material between plane-parallel cradle parts, each flat cradle part being divided into two parts by a strip, bead or a spar, extending transversely to the closure member, characterized in that an open portion of the packaging material within the closure member is assembled into a compact mass between at least two pairs in pairs of substantially congruent, until & mutually coated planar parallel rocker portions (12, 14 and 16, respectively), 18), which extend at least approximately continuously over the entire width of the closing detail, and that the said strip (bead) (20) or spar (22) consists of a curved rock portion, which with at least substantially unchanged height resp. depth stacks continuously Over closing detail even the entire width.

Device according to claim 1, characterized in that the two flat portions (12, 16 and 14, 18, respectively, Fig. 4; Fig. 9) on the same side if the total packaging material lie in one and the same plane.

Device according to claim 1 or 2, characterized in that the curved portions (20, 22, Fig. 4) have the same direction of curvature.

Device according to claim 1 or 3, characterized in that the closing part forms three pairs in pairs of substantially congruent, plane-parallel portions (Fig. 6), the three flat portions coated on the same side of the packaging material being united two and two through two curved portions on such that the closure member (sleeve) has a substantially Z-shaped longitudinal sectional profile.

Device according to claim 1, characterized in that the curved portions (Figs. 9, 10) have inboard opposite inclination directions.

Device according to claim 5, characterized in that it is substantially rectangular in an arbitrary cross-sectional plane through the closing part (sleeve) (Fig. 9).

Device according to claim 5 or 6, characterized in that the flat portions on the same side of the packaging material lie in one and the same plane.

Device according to any one of the preceding patent claims, characterized in that the closing part is provided with an inner lining (10; 50) of a material which can be brought to cold flow under pressure, preferably a thermoplastic material. Request publications: Patents Iran Sweden 159,960; France 1,050,117; USA 1 948 71

9.