DK171586B1

DK171586B1 - film dispenser

Info

Publication number: DK171586B1
Application number: DK21490A
Authority: DK
Inventors: Peter James Johnstone; Kerry Neil Good
Original assignee: First Green Park Pty Ltd
Priority date: 1987-07-29
Filing date: 1990-01-26
Publication date: 1997-02-10
Also published as: NZ225572A; DE3851632D1; GB2248601B; FI95685B; FI95685C; GB2248601A; GB9001390D0; JPH02504381A; EP0378550A1; AU2134588A; KR920010516B1; CA1335584C; DE3851632T2; ATE111867T1; AU605345B2; CH677479A5; NO900376L; RU2070858C1; CN1018068B; EP0378550A4

Abstract

A film dispenser comprises a holder for a roll (11) of packaging material. The holder is carried by a support (10) which includes a handle (12). A brake roller (13) is carried by the support (10) and engages the peripheral surface of the roll (11). Biasing springs (14) bias the roll (11) and brake roller (13) together whereby a braking force is established on the roll (11) restricting rotation thereof and facilitating stretching of the packaging material when it is withdrawn from the roll (11) and around the brake rollers (13).

Description

i DK 171586 B1in DK 171586 B1

Opfindelsen vedrører emballering, især en indretning til at lette emballering af artikler med omslags- eller omviklingsmaterialer af plast.The invention relates to packaging, in particular a device for facilitating the packaging of articles with plastic wrapping or wrapping materials.

Såkaldte "strækfolier" - sædvanligvis et plast-5 materiale såsom lineær polyethylen, der i sig selv har den egenskab at det "hæfter ved" eller "klæber" - er blevet benyttet til omvikling eller indpakning af mange typer af artikler, såsom pelleterede artikler omfattende mursten, glasbeholdere, emballerede drikkevarer så-10 som øl, og af voluminøse og/eller tunge produkter såsom store ruller med avispapir, kraftpapir og lignende. Strækfilmen binder artiklerne sammen som en enkelt enhed for at lette deres håndtering og transport. Der er blevet udviklet specialmaskiner til at omvikle sådanne 15 grupper af artikler med strækfilm.So-called "stretch films" - usually a plastic material such as linear polyethylene, which in itself has the "adhesive" or "adhesive" properties - have been used for wrapping or wrapping many types of articles such as pelleted articles comprising bricks, glass containers, packaged beverages such as beer, and of bulky and / or heavy products such as large rolls of newsprint, kraft paper and the like. The stretch film ties the articles together as a single unit to facilitate their handling and transportation. Special machines have been developed to wrap such 15 groups of stretch film articles.

I mange tilfælde kan det være ønskeligt, f.eks. af hensyn til afsendelse eller marketing, at sammenpakke flere ens eller forskellige artikler, enten med eller uden en palle. F.eks. inden for sådanne områder som 20 levnedsmiddeldistribution, isenkramforsyning, etc. kan det være ønskeligt at sammenpakke flere artikler, der skal sælges sammen som en enhed.In many cases it may be desirable, e.g. for the sake of shipping or marketing, to package several identical or different items, either with or without a pallet. Eg. in such areas as 20 food distribution, hardware supply, etc., it may be desirable to package several articles to be sold together as a unit.

Hidtil kunne i sådanne anvendelser, flere artikler, som kunne være adskilte eller være pakket hver for 25 sig i kartoner eller kasser, være pakket sammen med cellulose tape, bånd, snore, surringer, metal eller plaststropper eller lignende omviklingsmateriale.Heretofore, in such applications, several articles which could be separated or packed separately in cartons or boxes could be packed with cellulose tape, ribbons, cords, lashings, metal or plastic straps or similar wrapping material.

Sådanne pakkemetoder er tidsrøvende og arbejds-kraftforbrugende og er derfor forholdsvis dyre.Such packing methods are time consuming and labor consuming and are therefore relatively expensive.

30 Der er blevet foreslået adskillige maskiner for at hjælpe med ved omvikling af artikler med en strækfilm. I AU patentskrift nr. 511.642 beskrives en automatisk omviklingsmaskine til omvikling af lag af en filmbane om en last. I denne maskine holder et dreje-35 bord lasten i stilling og bordet drejer i forhold til en understøttet rulle med strækfilm. Der anvendes en DK 171586 B1 2 bremse i forbindelse med rullen for at sætte filmbanen under træk, således at banen strækkes når den påføres den roterende last.30 Several machines have been proposed to assist in wrapping articles with a stretch film. AU Patent No. 511,642 discloses an automatic wrapping machine for wrapping layers of a film web about a load. In this machine, a pivot table holds the load in position and the table rotates relative to a supported roll of stretch film. A DK 171586 B1 2 brake is used in conjunction with the roller to tighten the film web so that the web is stretched when applied to the rotating load.

Denne maskine er konstrueret for forholdsvis 5 store laster og er som følge af dette forholdsvis dyr at fremstille.This machine is designed for a relatively large 5 loads and as a result is relatively expensive to manufacture.

I AU patentskrift nr. 519.456 beskrives en fremgangsmåde i hvilken der anvendes en lignende type af omviklingsmaskine, medens AU patentskrift nr. 505.121 10 beskriver en anden form for apparat til omvikling af flere laster til en enhedslast. På lignende måde beskrives i US patentskrift nr. 4.050.221, 4.271.657 og 4.432.185 andre former for stræk-omviklingsmaskiner til omvikling af flere pakker til en enhed eller til omvik-15 ling af pelleterede laster.AU Patent No. 519,456 discloses a method in which a similar type of wrapping machine is used, while AU Patent No. 505,121 describes another type of apparatus for wrapping multiple loads into a single load. Similarly, U.S. Patent Nos. 4,050,221, 4,271,657, and 4,432,185 disclose other types of stretch wrapping machines for wrapping multiple packages into one unit or for wrapping pelleted loads.

Fra GB patentskrift nr. 1.581.674, der ækvivalent med DE patent nr. 2.724.100, kendes en automatisk omviklingsmaskine, hvori friktionsvalser af gummi i forbindelse med bremseorganer indgriber med overfladen 2 0 af en rulle af en film for at bibringe denne en spænding.From GB patent specification 1,581,674, equivalent to DE patent 2,724,100, an automatic winding machine is known in which rubber friction rolls in connection with braking means engage with the surface 20 of a roll of a film to give it a tension. .

Anvendelse af sådanne maskiner kræver at lasterne transporteres til maskinen, lastes ind i denne, fastspændes eller bæres på en eller anden måde, medens 25 maskinen omvikler strækfilmen om lasten. I US patentskrift nr. 4.102.513 beskrives en transportabel, bærbar dispenser til at vikle en plast-strækfilm fra en rulle om en genstand. Dispenseren har et spoleaggregat på hvilket der er monteret en rulle af strækfilm. Der er 30 forbundet to håndtag til spoleaggregatet til understøtning af dette, under brug. Understøtningsaggregatet omfatter en bæreaksel, der er fastgjort til en grundplade og bærer et par af over for hinanden beliggende, drejelige endeunderstøtninger monteret drejeligt på akslen.The use of such machines requires that the loads be transported to the machine, loaded into it, clamped or carried in some way, while the machine wraps the stretch film about the load. U.S. Patent No. 4,102,513 discloses a portable portable dispenser for wrapping a plastic stretch film from a roll about an article. The dispenser has a coil assembly on which a roll of stretch film is mounted. Two handles are connected to the coil assembly to support this, in use. The support assembly comprises a support shaft attached to a base plate and carries a pair of opposite, rotatable end supports mounted pivotally on the shaft.

35 Understøtningerne griber ind i enderne af en rulle af strækfilm af plast. I det mindste én af understøtnin- DK 171586 B1 3 gerne har et friktionsbremseelement, der kan virke som en bremse og begrænse rotationen af rullen af strækfilm på bære-akslen. Et af håndgrebene samvirker med de drejelige endeunderstøtninger for at forøge eller formind-5 ske modstanden på rullen og derved variere spændingen i filmen under omviklingen. Denne dispenser kræver imidlertid at begge hænder skal benyttes til anvendelsen af denne, og at bremsningen i filmrullen styres af operatøren under anvendelsen.35 The supports engage the ends of a roll of plastic stretch film. At least one of the supports preferably has a friction brake element which can act as a brake and limit the rotation of the roll of stretch film on the support shaft. One of the handles cooperates with the rotatable end supports to increase or decrease the resistance of the roll, thereby varying the tension in the film during the winding. However, this dispenser requires that both hands be used for its use and that the braking in the film roll is controlled by the operator during use.

10 I EP patentsskrift nr. 0.081.328 beskrives en anden form for filmdispenser i hvilken filmen passerer rundt om et valsepar, der er monteret svingbart i forhold til filmrullen. Spændingen, der påføres filmen, bevirker at én af valserne presses mod overfladen af 15 filmrullen, og valserne er indbyrdes forbundet med tandhjul, således at den ene valse roterer med en større hastighed end den anden for derved at strække filmen i længderetningen mellem valserne. Dispenseren har en grundplade, der er forsynet med hjul, så den kan bevæ-20 ges omkring en palleteret last. Selvom denne dispenser er transportabel er det nødvendigt, at den kører på et gulv omkring en palleteret last, og der er placeret et håndtag ved den øverste ende for at lette en sådan bevægelse. Yderligere styres trækket i filmen ved hjælp 25 af forskellen mellem periferihastighederne af de to valser. Såsnart spændingen i filmen formindskes, formindskes også de kræfter, der holder den ene af valserne mod overfladen af filmrullen, hvilket tillader rullen ubegrænset bevægelse og formindsker strækningen 30 mellem valserne.In EP Patent Specification No. 0.081,328, another form of film dispenser is disclosed in which the film passes around a pair of rollers mounted pivotally with respect to the film roll. The tension applied to the film causes one of the rollers to be pressed against the surface of the film roll and the rollers are interconnected with cogs so that one roller rotates at a greater speed than the other, thereby stretching the film longitudinally between the rollers. The dispenser has a base plate which is provided with wheels so that it can be moved around a palletized load. Although this dispenser is transportable, it must be run on a floor around a palletized load and a handle is located at the upper end to facilitate such movement. Further, the feature of the film is controlled by the difference between the peripheral speeds of the two rollers. As the tension in the film decreases, the forces holding one of the rollers towards the surface of the film roll are also reduced, which allows the roll to have unrestricted movement and reduces the stretch 30 between the rollers.

Fra US patentskrift nr. 3.477.656 kendes en vægmonteret papirrulledispenser omfattende en bæreramme, en spindel, der strækker sig fra rammen og bærer en rulle af papir, og en trykarm, der er fjederforspændt 35 til indgreb med papirrullen for at tilvejebringe en t rækspænd ingsv i rkning.US Patent No. 3,477,656 discloses a wall mounted paper roll dispenser comprising a support frame, a spindle extending from the frame and carrying a roll of paper, and a pressure lever spring biased 35 to engage the paper roll to provide a tensile tension in bill.

DK 171586 B1 4DK 171586 B1 4

Det er således ønskværdigt at tilvejebringe en forbedret indretning til emballering af genstande og som undgår i det mindste nogle af de ovenfor beskrevne problemer ved emballeringen.Thus, it is desirable to provide an improved device for packaging articles and which avoids at least some of the problems described above in packaging.

5 Det er også ønskeligt, at der tilvejebringes en emballeringsindretning som letter anvendelsen af en plastfilm, fortrinsvis en lineær, lav densitets poly-ethylenfilm som et emballagemateriale.It is also desirable to provide a packaging device which facilitates the use of a plastic film, preferably a linear, low density polyethylene film as a packaging material.

Det er hensigten med opfindelsen at tilvejebrin-10 ge en transportabel filmdispenser, i hvilken trækket i filmen, der påføres en artikel, kan styres som ønsket, og som kan benyttes med én hånd og tillader brugeren at omvikle en artikel eller en gruppe af artikler med en strækfilm.It is an object of the invention to provide a portable film dispenser in which the feature of the film applied to an article can be controlled as desired and can be used with one hand and allows the user to wrap an article or group of articles with a stretch film.

15 En yderligere hensigt med opfindelsen er at til vejebringe en filmdispenser, som er af forholdsvis simpel konstruktion med forholdsvis få bevægelige dele og som er forholdsvis let at anvende.A further object of the invention is to provide a film dispenser which is of relatively simple construction with relatively few moving parts and which is relatively easy to use.

Opfindelsen vedrører således en dispenser til en 20 rulle af emballagemateriale, omfattende et hus til at bære rullen af emballagemateriale, et håndtag på huset, en bremsevalse, der er anbragt drejeligt på huset, forspændingsorganer, der spænder bremsevalsen og rullen mod hinanden, således at bremsevalsen ligger an mod 25 overfladen af rullen af emballagematerialet med en kraft, der er proportional med forspændingskraften. Den tilsigtede virkning opnås ved, at huset har modstående baner eller ledekanaler til at optage og drejeligt bære modstående ender af et bæreorgan, der bærer rullen af 30 emballagematerialet, hvilket forspændingsorgan spænder rullen mod bremsevalsen, og huset har en dispense-ringsåbning, gennem hvilken emballagematerialet dispenseres, hvor åbningen er indrettet til at tillade emballagematerialet i brug at passere gabet mellem rullen og 35 bremsevalsen og at indgribe med og passere omkring en del af overfladen af bremsevalsen med henblik på at DK 171586 B1 5 blive dispenseret, med bremsevalsen virkende til at holde igen mod udtrækning af emballagematerialet fra rullen af materialet.The invention thus relates to a dispenser for a roll of packaging material, comprising a housing for supporting the roll of packaging material, a handle on the housing, a brake roller pivotally mounted on the housing, biasing means which tension the brake roll and the roller against each other, so that the brake roll abuts the surface of the roll of the packaging material with a force proportional to the biasing force. The intended effect is achieved by the housing having opposing paths or guide channels for receiving and pivotally supporting opposite ends of a carrier carrying the roll of the packaging material, said biasing means clamping the roller against the brake roller, and the housing having a dispensing opening through which the packaging material is dispensed where the opening is arranged to allow the packaging material in use to pass the gap between the roller and the brake roller and to engage with and pass around a portion of the surface of the brake roller in order to dispense, with the brake roller acting to hold again toward extracting the packaging material from the roll of the material.

Det foretrækkes, at ledekanalerne i huset har 5 over for hinanden beliggende kanaler, der er udformet på over for hinanden beliggende sider af huset og strækker sig fra én ende til en bageste ende af huset, hvor kanalerne optager enderne af bæreorganet, så rullen af emballagemateriale bæres drejeligt, medens der 10 samtidig muliggøres en bevægelse af rullen af emballagematerialet hen til den ene ende under indflydelse af forspændingsorganet.It is preferred that the guide ducts in the housing have 5 opposite channels formed on opposite sides of the housing and extend from one end to a rear end of the housing where the channels occupy the ends of the carrier so that the roll of packaging material is rotatably carried while at the same time allowing movement of the roll of the packaging material to one end under the influence of the biasing means.

Bæreorganet kan fortrinsvis være enten en dorn eller et spolerør, der bærer rullen af emballagemate-15 riale.The carrier may preferably be either a mandrel or a coil tube carrying the roll of packaging material.

Bremsevalsen kan omfatte et integreret bremseor-gan, der begrænser den frie rotation af bremsevalsen.The brake roller may comprise an integrated brake member which restricts the free rotation of the brake roller.

I en udførelsesform kan bremseorganet være indstilleligt, og det foretrækkes, at det omfatter en en-20 def lange, som er i friktions indgreb med en ende af bremsevalsen, og bremseforspændingsorganer, der spænder flangen mod nævnte ende. Herved opnås, at når plastmaterialet strækkes af rullen, vil bremsevalsen begrænse rotationen af rullen, hvilket forårsager, at materialet 25 sættes under trækspænding og derfor strækkes. Den grad af trækspænding og dermed stræk, som opnås, kan indstilles ved at indstille forspændingsorganet, fortrinsvis ved hjælp af en fjederspænding.In one embodiment, the braking means may be adjustable and it is preferred that it comprise a one-def length frictional engagement with one end of the brake roller and brake biasing means which span the flange toward said end. As a result, when the plastic material is stretched by the roller, the brake roller will restrict the rotation of the roller, causing the material 25 to be pulled under tension and therefore stretched. The degree of tensile stress and thus tensile obtained can be adjusted by adjusting the biasing means, preferably by means of a spring tension.

Ved anvendelse af indretningen ifølge opfindel-30 sen anbringes en ende af strækfilmen af plastmateriale på rullen, der er monteret så den kan dreje sig på holdeorganet, på de artikler, der skal omvikles, og den holdes på plads, medens indretningen og artiklerne bevæges fra hinanden. Bevægelsen bevirker, at plastmate-35 rialet strækkes samtidig med at det vikles om artiklen.Using the device of the invention, one end of the plastic film stretch film is placed on the roller mounted so that it can rotate on the retaining member on the articles to be wrapped and held in place while the device and articles are moved from each other. The movement causes the plastic material to be stretched while wrapping around the article.

Når spændingen i filmen når et forudbestemt minimum, DK 171586 B1 6 udøves tilstrækkelig kraft til at strække filmen og samtidig at overvinde virkningen af bremseorganet, så filmen kan trækkes ud fra rullen.When the tension in the film reaches a predetermined minimum, sufficient force is exerted to stretch the film and at the same time overcome the action of the braking means so that the film can be pulled out from the roll.

En lineær polyethylen film kan strækkes til fle-5 re gange sin orginale længde, afhængig af anvendelsen.A linear polyethylene film can be stretched to several times its original length, depending on the application.

Som følge af den elasticitet nogle filmtyper er i besiddelse af, kan en strakt film have tilbøjelighed til at vende tilbage til sin ustrakte størrelse eller tilstand, hvorved den udøver et tryk på de varer eller ar-10 tikler, der er omviklet af filmen, hvorved varerne holdes solidt sammen.Due to the elasticity some film types possess, a stretched film may tend to return to its unstretched size or condition, thereby exerting pressure on the articles or articles wrapped by the film, thereby the goods are held firmly together.

Hvis det ønskes kan dispenseren konstrueres som en vægmonteret strækfilmdispenser med samme træk som angivet ovenfor.If desired, the dispenser can be constructed as a wall mounted stretch film dispenser with the same feature as indicated above.

15 Opfindelsen vil nu blive nærmere forklaret ved hjælp af nogle udførelsesformer og med henvisning til tegningen, på hvilken fig. 1 er et perspektivbillede af en første udførelsesform af opfindelsen set fra siden, 20 fig. 2 en foretrukken udførelse af en dorn, fig. 3 et planbillede af en anden udførelsesform, fig. 4 et snit i en anden udførelsesform set fra oven, 25 fig. 5 et perspektivbillede, der viser en yder ligere udførelsesform af opfindelsen, fig. 6 et planbillede i delvis snit af dispenseren i fig. 5, fig. 7 et snit langs linien 7-7 i fig. 6, og 30 fig. 8 en modificeret konstruktion af en bremse- valse.The invention will now be explained in more detail by means of some embodiments and with reference to the drawing, in which fig. 1 is a side view of a first embodiment of the invention, FIG. 2 shows a preferred embodiment of a mandrel; FIG. 3 is a plan view of another embodiment; FIG. 4 is a top view of another embodiment; FIG. 5 is a perspective view showing a further embodiment of the invention; FIG. 6 is a partial sectional view of the dispenser of FIG. 5, FIG. 7 is a sectional view taken along line 7-7 of FIG. 6, and FIG. 8 shows a modified construction of a brake roller.

Fig. 1 viser en strækfilmdispenser, der kan betjenes med én hånd. Indretningen omfatter i denne udførelsesform en dorn 8 - der senere vil blive beskrevet 35 med henvisning til fig. 2 - som er lejret drejeligt i en ramme 10. Dornen er udført således, at den kan føres gennem den hule kerne i en rulle 11 af strækfilm.FIG. 1 shows a one-hand operated stretch film dispenser. The device in this embodiment comprises a mandrel 8 - which will be described later with reference to FIG. 2 - which is pivotally mounted in a frame 10. The mandrel is designed so that it can be passed through the hollow core in a roll 11 of stretch film.

DK 171586 B1 7 ved den ende af rammen 10 som ligger fjernest fra rullen 11 og dornen 8 er der et håndtag eller et håndgreb 12. Dispenseren har en bremsevalse 13, der fortrinsvis er en gummivalse med ru overflade, bå-5 ret af en ramme 6, og med spindelender 16, der kan glide i slidser 7. Valsen 13 påvirkes på en sådan måde af fjedre 14, at den kan opretholde en stort set konstant bremsende kraft på rullen 11. Denne bremsende kraft er tilstrækkelig stor til at tillade, at der 10 kan opnås en tilstrækkelig grad af strækning af filmen på rullen 11, når indretningen anvendes. Den ene ende af hver af fjedrene 14 er fastgjort i huller 15 i siderne af rammen 10, medens den anden ende er fastgjort til spindlen 16 på bremsevalsen 13. Som et al-15 ternativ kunne der være benyttet trykfjedre til at sikre den krævede grad af fjederpåvirkning af bremsevalsen mod rullen med strækfilm. Der er tilvejebragt justeringsorganer til hensigtsmæssig justering af fjedrene i de forskellige udførelsesformer af opfindelsen såsom 20 huller 15.DK 171586 B1 7 at the end of the frame 10 which is farthest from the roller 11 and the mandrel 8 there is a handle or a handle 12. The dispenser has a brake roller 13, which is preferably a rough surface rubber roller, supported by a frame 6, and with spindle ends 16 which can slide into slots 7. The roller 13 is actuated by springs 14 such that it can maintain a substantially constant braking force on the roller 11. This braking force is sufficiently large to allow a sufficient degree of stretching of the film can be obtained on the roll 11 when the device is used. One end of each of the springs 14 is fixed in holes 15 on the sides of the frame 10, while the other end is attached to the spindle 16 on the brake roller 13. As an alternative, pressure springs could be used to ensure the required degree of spring action of the brake roller against the roll of stretch film. Adjusting means are provided for conveniently adjusting the springs in the various embodiments of the invention such as 20 holes 15.

Fig. 2 viser en dorn 8, der er opbygget teleskopisk. Inde i en tromle 17 er optaget et indre element 18 med et hoved 19 med en diameter, der er lig med tromlen 17's diameter. Ligeledes inde i tromlen 17, 25 ved den ende der er fjernest fra hovedet 19, er der en ikke-vist trykfjeder til at påvirke fremspring 20 til samvirke med holdere i rammen 10. En tap eller et anslag 21 glider i en slids 22 i tromlen 17, hvorved den forhindrer det indre element 18 i at falde ud 30 af tromlen 17. I brug fjernes tromlen 8 på let måde fra huset 10 ved relativ bevægelse mellem tromlen 17 og det indre element 18, så fremspringene 20 trækkes ud fra holderne i rammen 10. Alternativt kan håndtaget 12 omfatte i hinanden indgribende holdere og 35 fremspring, der tillader at håndtaget aftages, hvorved der fås adgang til dornen 8.FIG. 2 shows a mandrel 8 which is constructed telescopically. Inside an drum 17, an inner member 18 is provided with a head 19 having a diameter equal to the diameter of the drum 17. Also inside the drum 17, 25 at the end which is farthest from the head 19, there is a not shown compression spring to actuate projections 20 for cooperating with holders in the frame 10. A pin or stop 21 slides into a slot 22 in the drum 17, thereby preventing the inner element 18 from falling out of the drum 17. In use, the drum 8 is easily removed from the housing 10 by relative movement between the drum 17 and the inner element 18, so that the projections 20 are pulled out from the holders in the frame. 10. Alternatively, the handle 12 may comprise interlocking holders and projections allowing the handle to be detached, thereby providing access to the mandrel 8.

DK 171586 B1 8DK 171586 B1 8

Fig. 3 er et planbillede af en anden udførelsesform af opfindelsen. I denne udførelsesform passerer en dorn, som kan svare til den, der er vist i fig. 2 eller som kan være fast placeret i en ramme 23, gennem den 5 hule kerne i en rulle 11 med strækfilm 24.FIG. 3 is a plan view of another embodiment of the invention. In this embodiment, a mandrel which is similar to that shown in FIG. 2 or which may be firmly positioned in a frame 23, through the hollow core of a roll 11 with stretch film 24.

Rammen 23 har et håndtag 25 og dispenseren har en fjederpåvirket bremsevalse 26. Bremsevalsen 26 bæres af en trådramme 35, som fastholdes til rammen 23 ved hjælp af to øjer 28. En torsionsfjeder 10 27, som er ud i ét med rammen 35, påfører fjederkraf ten på bremsevalsen 26.The frame 23 has a handle 25 and the dispenser has a spring-actuated brake roller 26. The brake roller 26 is carried by a wire frame 35 which is held to the frame 23 by two eyes 28. A torsion spring 10 27 integral with the frame 35 applies spring force the brake roller 26.

Fig. 4 viser en yderligere udføreslesform af en dispenser 31 til at holde i hånden og som kan dispensere plastfilm fra en rulle 32, som er viklet på en 15 spolekerne 30 af pap eller andet materiale. Kernen 30 bæres på tappe 33 og 34, der er ud i ét med rammesideelementer, henholdsvis 36 og 37. Rammesideelementet 36 er ud i ét med et håndtag 38, som strækker sig stort set koaksialt med tappene 33 og 34.FIG. 4 shows a further embodiment of a hand-held dispenser 31 capable of dispensing plastic film from a roll 32 wound on a cardboard spool core 30 of cardboard or other material. The core 30 is supported on pins 33 and 34 which integrate with frame side members 36 and 37, respectively. Frame side member 36 integrates with a handle 38 which extends substantially coaxially with pins 33 and 34.

20 Håndtaget 38 har på sin frie ende en fortykkelse i form af vulst 39, som kan snappe ind i en sokkel 41 udformet i sideelementet 37 for at holde rammedelene sammen.The handle 38 has at its free end a thickening in the form of bead 39 which can snap into a base 41 formed in the side member 37 to hold the frame members together.

En valse 42, der fortrinsvis er udført af en 25 gummiblanding bæres ved hjælp af fjedre 43 og 44, så den indgriber med overfladen af filmrullen 32. Fjedrene 43 og 44 er fastgjort til spændingsindstillingselementer henholdsvis 46 og 47, fastgjort inde i rammesideelementerne 36 og 37. Hvert justeringsele-30 ment har en finger 48, 49, der kan indgribe med en af flere anlæg 51, placeret i en sidevæg i en slids 52 udformet i hver af rammesideelementerne 36 og 37.A roller 42, preferably formed of a rubber compound, is carried by springs 43 and 44 to engage with the surface of film roll 32. Springs 43 and 44 are attached to tension adjusting elements 46 and 47, respectively, secured within frame side members 36 and 37. Each adjustment element has a finger 48, 49 which can engage one of a plurality of systems 51 located in a side wall of a slot 52 formed in each of the frame side members 36 and 37.

På rammesideelementet 36 er fastgjort et knivsblad 53, der er beskyttet med en skærm 54, som 35 vil tillade filmen at kontakte bladet 53, samtidig med at en bruger hindres i utilsigtet kontakt med dette .Attached to the frame side member 36 is a knife blade 53 protected by a screen 54 which will allow the film to contact the blade 53 while preventing a user from inadvertent contact therewith.

DK 171586 B1 9DK 171586 B1 9

Filmen af plastmateriale kan dannes til et bånd, en strop eller en "snor" med henblik på visse anvendelser. Til dette formål har dispenseren 31 et lille øje 56, der bæres af en af tråd udformet bæring 57 eller 5 lignende, således at det er indbyrdes adskilt fra valsen 42. Når plastfilmen ledes gennem øjet 56 bevirker indsnøringen i øjet sammen med den på filmen påførte spænding og filmens indbyggede "klæbe"-egenskab at filmen indtager en form som en snor, der er yderst 10 stærk.The film of plastic material can be formed into a ribbon, a strap or a "string" for certain applications. For this purpose, the dispenser 31 has a small eye 56 supported by a wire-shaped carrier 57 or the like, so that it is spaced apart from the roller 42. When the plastic film is passed through the eye 56, the lacing of the eye coincides with that applied to the film. suspense and the film's built-in "adhesive" property that the film takes the form of a string that is extremely 10 strong.

Som vist i fig. 5-8 omfatter dispenseren i denne udførelsesform et hus 62, der er støbt af et plastmateriale og som har en frontsektion 63 og en bages te sektion 64, hvilke sektioner er sammenhængslet om en 15 akse 66. En clips 67 holder de to hussektioner i arbejdsstillingen som vist i fig. 5.As shown in FIG. 5-8, the dispenser in this embodiment comprises a housing 62 molded of a plastic material having a front section 63 and a baking tea section 64 which are interconnected about an axis 66. A clip 67 holds the two housing sections in the working position as shown in FIG. 5th

Huset har på modstående sider et par ledebaner 68 som kan optage enderne af en filmrullekerne eller en rørformet spolekerne 69, således at denne kan bevæ-20 ges langs banerne 68 samtidig med at der tillades rotation af rullen 11 af filmmaterialet.The housing has on opposite sides a pair of guide paths 68 which can receive the ends of a film reel core or tubular coil core 69 so that it can move along the paths 68 while allowing rotation of the reel 11 of the film material.

Den bageste hussektion er ud i ét med et håndtag 71, medens den forreste hussektion 63 bærer en brem-sevalse 72. Bremsevalsen 72 omfatter en spindel 25 73, der er monteret i frontsektionen 63, lejebøsnin ger 54 monteret på hver ende af spindelen 73 og en i det væsentlige stiv PVC rulle 76, der er monteret drejeligt på lejebøsningerne 74.The rear housing section is integral with a handle 71, while the front housing section 63 carries a brake roller 72. The brake roller 72 comprises a spindle 25 73 mounted in the front section 63, bearing bushes 54 mounted on each end of the spindle 73 and a substantially rigid PVC roller 76 rotatably mounted on the bearing bushes 74.

To fjedre 78 er monteret på en søle 79 koak-30 sialt med svingakslen 66. Det ene ben 81 i hver fjeder 78 bæres af en stang 82 i den bageste hussektion 64, medens det andet ben 83 i hver fjeder 78 hviler imod spolerøret 69, der bæres i banerne 68. Fjedrene 78 påvirker således spolerøret 69 og 35 dermed rullen 11 mod bremsevalsen 72. I brug passerer filmmaterialet fra rullen 11 mellem gabet skabtTwo springs 78 are mounted on a column 79 coaxially with the pivot shaft 66. One leg 81 of each spring 78 is supported by a rod 82 in the rear housing section 64, while the other leg 83 of each spring 78 rests against the coil tube 69. carried in the webs 68. The springs 78 thus affect the reel tube 69 and 35 thereby the roller 11 against the brake roller 72. In use, the film material from the roller 11 passes between the gap created

Claims

A dispenser for a packing material roller (11), comprising a housing (62) for supporting the packing material roll (11), a handle (71) on the housing (62), a brake roller (72) which is pivotably mounted on the housing, biasing means (78) which tension the brake roller (72) and roller (11) against each other such that the brake roller (72) abuts the surface of the roller (11) of the packaging material with a force which is proportional to DK 171586 B1 11 the biasing force, characterized in that the housing (62) has opposing webs or guide channels (68) for receiving and pivotally supporting opposite ends of a carrier (69) carrying the roller (11) of the packaging material. said biasing means (78) clamping the roller (11) against the brake roller (72) and the housing (72) having a dispensing opening through which the packaging material is dispensed, the opening being adapted to allow the packaging material in use to pass the gap between the roller 10 (11) and the brake roller (72) and to engage and passing around a portion of the surface of the brake roller (72) for dispensing, with the brake roller (72) acting to hold back against the withdrawal of the packaging material from the roll (11) of the material. 15

Dispenser according to claim 1, characterized in that the carrier (69) is a mandrel pivotally supported by the guide channels (68) in the housing.

Dispenser according to claim 1, characterized in that the carrier (69) is a relatively rigid coil tube carrying the packaging material and the ends of the coil tube are pivotally supported by the guide channels (68).

Dispenser according to claims 1-3, characterized in that the brake roller (72) comprises an integrated brake means (86-89, 91) which restricts the free rotation of the brake roller.

Dispenser according to claim 4, characterized in that it has two bias springs (78) 30 which are designed to engage with projecting end portions of the carrier (69) carrying the roller to clamp the roller against the brake roller.

Dispenser according to claim 5, characterized in that the biasing springs (78) comprise a 35 pairs of spring elements carried by the housing, each spring elements having a pair of legs, one leg (81) of each pair being carried by the housing, while the second leg (83) is arranged to engage with one end of the carrier to clamp the roller against the brake roller.

Dispenser according to claims 4-6, characterized in that the braking means is adjustable.

Dispenser according to claims 4-7, characterized in that the braking means comprises an end flange (86,87) which is frictionally engaged with an end of the brake roller (72) and brake prestressing means (88,89,91) 10 which clamp the flange towards said end.

Dispenser according to claim 8, characterized in that a pair of flanges (86,87) engage with opposite ends of the brake roller.

Dispenser according to claims 1-9, characterized in that the guide channels (68) in the housing have opposite channels formed on opposite sides of the housing and extend from one end to a rear end. of the housing where the channels occupy the ends of the carrier (69) so that the roll (11) 20 of the packaging material is pivotally supported while at the same time allowing a movement of the roll of the packaging material to one end under the influence of the biasing means.

Dispenser according to claims 1-10, characterized in that the housing is formed of two sections which are hinged together and movable between an open position in which the roll of packaging material is available and a closed position.

Dispenser according to claims 1-11, characterized in that the packaging material is a stretchable plastic film.