DK161584B

DK161584B - CLOSING INSTALLATION, EX. FOR CLOSING BAGS

Info

Publication number: DK161584B
Application number: DK128785A
Authority: DK
Inventors: Haakan Pettersson
Original assignee: Trioplast Ab
Priority date: 1984-03-22
Filing date: 1985-03-21
Publication date: 1991-07-22
Also published as: FI77625C; FI77625B; DK128785A; SE442739B; DK161584C; SE8401601L; NO851079L; NO165065B; DK128785D0; FI851126L; SE8401601D0; FI851126A0

Description

DK 161584 BDK 161584 B

Opfindelsen angår en 1ukkeindretning til lukning af emballager af ark- eller foliemateriale, f.eks. sække af plastfolie, og af den art der er anført i krav l's indledning.The invention relates to a sealing device for closing sheets of sheet or foil material, e.g. sacks of plastic wrap and of the kind specified in the preamble of claim 1.

5 Forskellige produkter indpakkes i stigende grad i emballager af engangstypen. I mange tilfælde er det hensigtsmæssigt og bekvemt at benytte sække eller en anden af ark- eller foliemateriale, f.eks. plastfolie, fremstillet emballage. For at den af ark- eller foliemateriale fremstillede emballage kan op-10 fylde sin funktion på tilfredsstillende måde, kræves hensigtsmæssige lukkeindretninger. Disse må være i stand til at samvirke med foliematerialet på en sådan måde, at dette sikkert kan sammenklemmes uden at blive beskadiget. Da foliematerialer normalt har lav rivestyrke, kan disse krav være vanskelige at 15 tilgodese. De 1ukkeindretni nger, som i øjeblikket hyppigst anvendes, udgøres af snor eller snoet bindetråd, som trækkes sammen omkring en sammenklemt del af foliematerialet. Snoren eller tråden skærer imidlertid let ind i foliematerialet, som derved rives i stykker, og emballagen bliver ødelagt.5 Various products are increasingly being packaged in disposable packaging. In many cases it is convenient and convenient to use sacks or another of sheet or foil material, e.g. plastic wrap, manufactured packaging. In order for the packaging made of sheet or foil material to fulfill its function satisfactorily, appropriate closure devices are required. These must be able to interact with the foil material in such a way that it can be safely clamped without being damaged. Since foil materials usually have low tear strength, these requirements can be difficult to meet. The closure devices most commonly used today are constituted by string or twisted binder which is pulled together around a clamped portion of the foil material. However, the cord or thread easily cuts into the foil material, which thereby tears, and the packaging is destroyed.

2020

Et område, hvor anvendelsen af emballage er kraftigt øget, er landbruget. F.eks. er man begyndt at anvende sække af plastfolie til ensilering af dyrefoder. Dette gør høstarbejdet lettere og giver et bedre foderprodukt. I denne forbindelse 25 er det imidlertid især problematisk at fremskaffe hensigtsmæssige og effektive lukkeindretninger. Der arbejdes nemlig med store emballager, som, i og med de er store og tunge, besværliggør selve lukkeoperationen og øger risikoen for, at lukningen bliver uoålidelig. Lukkeindretninger i form af 30 snor eller tråd er især i denne sammenhæng uhensigtsmæssige, idet de skærer sig ind i emballagen. Anvendelsen af snor og tråd i forbindelse med emballage til dyrefoder er yderligere uhensigtsmæssig ud fra det synspunkt, at der er en vis risiko for, at snoren eller tråden, når emballagen åbnes, vil havne 35 i foderet og blive spist af dyret, som derved kan få alvorlige skader.One area where the use of packaging has increased significantly is agriculture. Eg. we have started using plastic wrap bags for silage of animal feed. This makes harvesting easier and provides a better feed product. In this connection, however, it is particularly problematic to provide suitable and effective closure devices. They work with large packages, which, as they are large and heavy, make the closing operation very difficult and increase the risk of the closure becoming unreliable. In this context, closure devices in the form of cord or wire are particularly inappropriate in that they cut into the packaging. The use of cord and wire in connection with packaging for animal feed is further disadvantageous from the viewpoint that there is a certain risk that when the package is opened the cord or wire will end up in the feed and be eaten by the animal, which may get serious injuries.

22

DK 161584 BDK 161584 B

! i j! i j

Til afhjælpning af disse ulemper er det kendt at benytte lukkeindretninger, som består af to i forhold til hinanden drejeligt forbundne parter, som har hver sin af to mod hinanden vendende overflader, som tilsammen afgrænser en åbning, som er 5 indrettet til at optage en del af emballagens ark- eller fo-1iemateriale. Disse kendte lukkeindretninger er imidlertid ikke egnede til brug ved den type store emballager, til hvilke 1ukkei ndretni ngen ifølge foreliggende opfi ndel se først og fremmest er beregnet, nemlig ensilagesække til dyrefoder. Til 10 disse benyttes relativt tykt ark- eller foliemateriale, og kendte lukkeindretninger kan ikke tilvejebringe den nødvendige sammenpresning af materialet.To remedy these drawbacks, it is known to use closures which consist of two mutually rotatably connected parts, each having two facing surfaces, which together define an aperture adapted to accommodate a portion. of the sheet or foil material of the packaging. However, these known closure devices are not suitable for use in the type of large packages to which the closure according to the present invention is primarily intended, namely silage bags for animal feed. For these, relatively thick sheet or foil material is used, and known closure devices cannot provide the necessary compression of the material.

iin

Formålet med opfindelsen er at anvise en lukkeindretning til | 15 lukning af emballage af ark- eller foliemateriale, f.eks.The object of the invention is to provide a closure device for | Closure of packaging of sheet or foil material, e.g.

sække af plastfolie, og som afhjælper de nævnte ulemper ved hidtil kendte lukkeindretninger.sacks of plastic wrap which alleviate the aforesaid disadvantages of previously known closure devices.

Til opnåelse af dette formål er lukkeindretningen ifølge op-20 findelsen ejendommelig ved, at parternes mod hinanden vendende overflader, der afgrænser åbningen til optagelse af delen af emballagens ark- eller foliemateriale er udformet således, at delen af emballagens ark- eller foliemateriale ved den formindskelse af åbningens størrelse, der følger af drejningen af 25 de to parter mod hinanden, bevæges mod og sammenpresses nær ved hængselsleddet mellem parterne.To achieve this purpose, the closure device according to the invention is characterized in that the facing surfaces of the parties defining the opening for receiving the part of the sheet or film material of the packaging are formed such that the part of the sheet or film material of the packaging in that reduction of the aperture size resulting from the rotation of the two parties towards each other is moved toward and compressed near the hinge joint between the parties.

Ved lukkeindretningen ifølge opfindelsen bevæges ark- eller foliematerialet således efterhånden som sammenpresningen for-30 øges og modstanden mod sammenpresningen derved bliver større lidt efter lidt i retningen mod hængselsleddet, så at sammenpresningskraften tilvejebringes ved en successiv længere trækarm.Thus, in the closing device according to the invention, the sheet or foil material is moved as the compression increases and the resistance to the compression thereby gradually increases in the direction of the hinge joint, so that the compressive force is provided by a successively longer pulling arm.

35 En ifølge opfindelsen udformet lukkeindretning til emballager af ark- eller foliemateriale tilgodeser de krav, som stilles til en lukkeindretning af denne art og er således enkel at anvende samtidig med, at den har en effektiv og sikker funktion.A closure device designed according to the invention for packaging of sheet or film material meets the requirements of a closure device of this kind and is thus easy to use while having an efficient and safe function.

33

DK 161584 BDK 161584 B

Opfindelsen forklares nærmere under henvisning til tegningen, hvor 5 fig. 1 i perspektiv viser en lukkeindretning ifølge opfindelsen i åben position og fig. 2a-c lukkeindretningen i fig. 1 i forskellige lukkepositioner.The invention is further explained with reference to the drawing, in which: FIG. 1 is a perspective view of a closure device according to the invention in an open position; and FIG. 2a-c the closure device of FIG. 1 in different closing positions.

1010

Lukkeindretningen ifølge opfindelsen har form som en klemme, der består af to parter 2 og 4. Disse er ved hjælp af en hængseltap 6 svingbart forbundet med hinanden. Parten 2 består af to ligedannede hoveddele 8, som mellem sig danner en gennem-15 gående slids 10. Denne slids 10 er således dimensioneret i forhold til tykkelsen af parten 4, at parten 4 kan føres ind 1 slidsen 10 ved drejning af parterne 2 og 4 i forhold til hinanden omkring haengseltappen 6.The closure device according to the invention takes the form of a clamp consisting of two parts 2 and 4. These are pivotally connected to one another by means of a hinge pin 6. The portion 2 consists of two similarly shaped main portions 8 which form between them a continuous slot 10. This slot 10 is dimensioned relative to the thickness of the portion 4, that the portion 4 can be inserted into the slot 10 by turning the parts 2 and 4 relative to each other around the hinge pin 6.

2Q Ved sammenføring af parterne 2 og 4 via en drejning omkring hængseltappen 6 danner parterne en åbning, som begrænses af parternes 2 og 4 indre kantflader 12 og 14. Hver af kantfladerne 12 og 14 har en i hovedsagen lige del 16 og en i hovedsagen halvcirkulær del 18.2Q When joining the parts 2 and 4 via a pivot around the hinge pin 6, the parties form an aperture which is limited by the inner edge faces 12 and 14. Of the parts 2 and 4, each of the edge faces 12 and 14 has a substantially straight portion 16 and a substantially semicircular one. part 18.

2525

Ved partens 4 ydre kantflade 20 er der tildannet tænder 22. Kantfladen 20 har form som en cirkelbue med hængseltappen 6 som centrum.At the outer edge surface 20 of the part 4, teeth 22 are formed. The edge surface 20 is in the form of a circular arc with the hinge pin 6 as the center.

Tænderne 22 er indrettet til ved sammenføring af parterne 3 0 2 og 4 at indgribe i komplementære tænder 24, som er tildannet på kantfladen af en pal 28, som er drejeligt forbundet med en hængseltap 26, som er anbragt ved den i forhold til 35 4The teeth 22 are arranged to engage, by joining the parts 302 and 4, into complementary teeth 24 formed on the edge surface of a pawl 28 which is pivotally connected to a hinge pin 26 which is disposed at it relative to 35 4.

DK 161584 BDK 161584 B

OISLAND

hængseltappen 6 modsatte ende af parten 2. Palens 28 drejning i retning mod uret begrænses, som det fremgår i fig. 1, dels på grund af indgreb med et stoporgan 30 og dels på. grund af formen på palens kantflade.the pivot pin 6 opposite end of the portion 2. The rotation of the pawl 28 in a counterclockwise direction is restricted as shown in FIG. 1, partly due to engagement with a stop means 30 and partly on. because of the shape of the edge surface of the palace.

55

Oven over lukkeindretningen er der i fig. 1 vist en øvre del 32 af en af foliemateriale fremstillet emballage, som skal i lukkes ved hjælp af lukkeindretningen ifølge opfindelsen.Above the closure device, FIG. 1, an upper portion 32 of a foil material packaging is to be closed by means of the closure device according to the invention.

Emballagen kan være en plastsæk til indpakning af ensilage. , 10 Ved lukning af emballagen føres lukkeindretningén ifølge opfindelsen fra siden ind over delen 32, hvorefter parterne 2 og 4 føres sammen med henblik på at danne en åbning, som omslutter delen 32.The packaging can be a plastic bag for wrapping silage. 10 Upon closing the package, the closure device according to the invention is laterally inserted over the portion 32, after which the portions 2 and 4 are brought together to form an opening which encloses the portion 32.

15 I begyndelsen af sammenføringen indtager lukkeindretningen den i fig. 2a viste stilling, hvor den af parternes 2 og 4 indre kantflader 12 og 14 begrænsede åbning i hovedsagen er hjerteformet. Ved fortsat sammenføring af lukkeindretningens parter 2 og 4, som gennemføret for at mindske åbningens størrelse 20 og derved opnå en ønsket sammenpresning af delen 32, bliver delen 32 af foliematerialet forskudt hen mod den del af åbningen, som dannes af kantfladernes 12 og 14 halvcirkelformede dele 18. Denne forskydning fremmes af kantfladernes lige dele 16.15 At the beginning of the assembly, the closure device occupies the one shown in FIG. 2a, wherein the opening defined by the inner edge surfaces 12 and 14 of the parts 2 and 4 is substantially heart-shaped. By continuing to engage the parts 2 and 4 of the closure device, as performed to reduce the size 20 of the aperture and thereby obtain a desired compression of the portion 32, the portion 32 of the foil material is displaced toward the portion of the aperture formed by the semicircular portions of the edge faces 12 and 14. 18. This displacement is promoted by the equal parts 16 of the edge surfaces.

25 I den i fig. 2b viste position er parterne 2 og 4 ført så meget sammen, at åbningen til optagelse af delen 32 dannes af kantfladernes 12 og 14 halvcirkelformede del 18, således at åbningen i denne position får en i hovedsagen cirkulær 30 form. Hvis delen 32 i denne position ikke er blevet sammenpresset tilstrækkeligt til at lukke emballagen på en tilfredsstillende måde, kan sammenføringen af parterne 2 og 4 fortsættes indtil den i fig. 2c viste position, hvor åbningen, som optager delen 32, i hovedsagen er linseformet. I sidstnævnte 35 position forhindres en fortsat sammenføring af parterne 2 og 4 ved, at parten 4 har et fremspring 34, som i positionen, hvor parterne er ført maksimalt sammen, indgriber med stop-In the embodiment of FIG. 2b, the portions 2 and 4 are brought together so much that the opening for receiving the portion 32 is formed by the semicircular portion 18 of the edge surfaces 12 and 14, so that the opening in this position takes on a substantially circular 30 shape. If the portion 32 in this position has not been compressed sufficiently to seal the package satisfactorily, the joining of the portions 2 and 4 may be continued until in FIG. 2c, wherein the aperture which receives the portion 32 is substantially lens-shaped. In the latter 35 position, a continued joining of the parties 2 and 4 is prevented by the party 4 having a projection 34 which, in the position where the parties are maximally brought together, engages with the stop.

DK 161584 BDK 161584 B

OISLAND

5 organet 30. Fremspringet 34 medfører endvidere, at parterne 2 og 4 i forhold til hængseltappen 6 får lige store trækarme ved sammenføring af parterne 2 og 4. Fremspringet 34 kan endvidere som vist punkteret have et udløserorgan 35, som ved en 5 fuldstændig sammenføring af parterne 2 og 4 indbriber med palen 28 og svinger denne ud af indgreb med tænderne 22, således at lukkeindretningen kan åbnes.5, means 30. The projection 34 furthermore gives the parties 2 and 4 relative to the hinge pin 6 equal arms when joined by the parties 2 and 4. The projection 34 may furthermore, as shown punctured, have a trigger member 35 which, upon a complete joining of the parts 2 and 4 engage the pawl 28 and swing it out of engagement with the teeth 22 so that the closure device can be opened.

Uafhængigt af, hvilken position parterne 2 og 4 indtager i 10 forhold til hinanden, og dermed uafhængigt af formen på åbningen, i hvilken delen 32 er optaget, er parterne 2 og 4 forhindret i at blive ført fra hinanden på grund af indgrebet mellem palens 28 tænder og tænderne 22 på partens 4 ydre kantflade 20. Under sammenføringsbevægelsen føres tænderne 24 ud af 15 indgreb med tænderne 22, ved at palen 28 svinger væk, medens indgrebet ved forsøg på at føre parterne i modsat retning opretholdes på grund af, at palen indgriber med stoporganet 30, og på grund af den nævnte form på palens kantflade.Regardless of the position of the parties 2 and 4 in relation to each other, and thus, regardless of the shape of the opening in which the portion 32 is occupied, the parties 2 and 4 are prevented from being separated from each other due to the engagement of the pallet 28 the teeth and the teeth 22 on the outer edge surface of the party 4, during the joining movement, the teeth 24 are moved out of 15 with the teeth 22, by the pawl 28 pivoting away, while the engagement by attempting to move the parties in the opposite direction is maintained due to the pawl engaging with the stop means 30, and because of said shape on the edge surface of the pallet.

20 Med henblik på at forhindre, at kantfladernes 12 og 14 kanter ved sammenføringsbevægelsen samvirker således, at der opstår skader på foliematerialet, kan det være hensigtsmæssigt at forsyne kanterne med affasninger eller kraftige udsparinger.20 In order to prevent the edges of the edge surfaces 12 and 14 from cooperating so as to cause damage to the foil material, it may be appropriate to provide the edges with bevels or sharp recesses.

25 Ved en i forhold til den på tegningerne viste udførelsesform for lukkeindretningen ændret udførelsesform kan palen 28 være således fjederbelastet, at den fjedrende holdes i indgreb med stoporganet 30. F.eks. kan der direkte i plastmaterialet udformes fjedrende flige, som står i indgreb med palen.In an embodiment altered in relation to the embodiment of the closure device shown in the drawings, the pawl 28 may be spring loaded so that the spring is held in engagement with the stop means 30. For example. For example, resilient tabs can be formed directly in the plastic material which engage the pile.

3030

Som det fremgår, er lukkeindretningen simpel og nem at anvende, ligesom den giver en sikker lukning af emballager af foliemateriale. Lukkeindretningen ifølge opfindelsen beskadiger ikke foliematerialet, hvilket er særligt vigtigt, idet dette ofte har lav rivestyrke, og at selv en mindre beskadigelse af materialet kan medføre, at emballagen rives i stykker og bliver helt ødelagt. Endvidere kan størrelsen af den åbning, somAs can be seen, the closure device is simple and easy to use, as well as providing a secure closure of foil packaging. The sealing device according to the invention does not damage the foil material, which is particularly important, since it often has low tear strength and that even a minor damage to the material can cause the packaging to tear and be completely damaged. Furthermore, the size of the aperture which

Claims

1. Closing device for closing packings of sheet or foil material, e.g. sacks of plastic foil by compression of a portion (32) of the sheet or foil material of the packaging and comprising two pivotally hinged links (6) relative to each other.parts (2, 4) having each of two against each other facing surfaces (16, 18), which together define a ten, one receptacle of the portion (32) of the aperture of the packaging sheet or foil material, which has a decreasing and rotating relationship with the desired by rotation of the two parts towards each other 20, compression of the sheet or foil material adapted size, which parties can be locked in the desired position relative to each other, characterized in that the faces (16, 18) of the parties (2, 4) defining the opening for receiving the part ( 32) of the sheet or foil material of the packaging 25 is designed so that the portion (32) of the sheet or foil material of the packaging, by the reduction in the size of the opening resulting from the rotation of the two parts towards each other, is moved towards and the same is pressed close to the hinge (6) between the parties. 3 0

Closure device according to claim 1, characterized in that the faces (2, 4) of the parts (2) which define the opening for receiving the part (32) of the sheet or foil material of the packaging each have a curved part (18) and a 35 main part (16). 7 DK 161584 B

A closure device according to claim 2, characterized in that the arcuate portion (18) of the parties' surfaces is located at the hinge joint (6), wherein the opening at the beginning of the joining motion of the parties is essentially of a heart shape, then substantially assumes circular shape and eventually assume lens shape.

Closing device according to one or more of the preceding claims, characterized in that one part (4) is inserted during a joining movement into a central slot (10) in the other part (2).

Closing device according to one or more of the preceding claims, characterized in that the parties (2, 4) have locking teeth (22, 24) which cooperate with each other in order to: 5 lock the parties in the desired mutual position.

Closure device according to claim 5, characterized in that the locking teeth (22, 24) are arranged on an edge surface of one part (4) and on a pawl (28) pivotally connected to the other part (2).

A closure device according to one or more of the preceding claims, characterized in that the portions (2, 4) facing each other, defining the opening for receiving the part (32) of the sheet or film material of the packaging, are chamfered to avoid cutting the sheet or foil material. 3C 35