DK147465B - Container having a closure formed with a guarantee strip of a heat-deformable material and method of fastening the closure to the container - Google Patents

Container having a closure formed with a guarantee strip of a heat-deformable material and method of fastening the closure to the container Download PDF

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Publication number
DK147465B
DK147465B DK44679A DK44679A DK147465B DK 147465 B DK147465 B DK 147465B DK 44679 A DK44679 A DK 44679A DK 44679 A DK44679 A DK 44679A DK 147465 B DK147465 B DK 147465B
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Denmark
Prior art keywords
container
closure
heat
band
guarantee
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Application number
DK44679A
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Danish (da)
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DK147465C (en
DK44679A (en
Inventor
Dietmar Aichinger
Original Assignee
Obrist Ag Albert
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CH1121874A external-priority patent/CH589543A5/en
Priority claimed from CH1521774A external-priority patent/CH582099A5/en
Priority claimed from DK372275AA external-priority patent/DK147175B/en
Application filed by Obrist Ag Albert filed Critical Obrist Ag Albert
Priority to DK44679A priority Critical patent/DK147465C/en
Publication of DK44679A publication Critical patent/DK44679A/en
Publication of DK147465B publication Critical patent/DK147465B/en
Application granted granted Critical
Publication of DK147465C publication Critical patent/DK147465C/en

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Description

147465147465

Opfindelsen angår et beholderlukke af den i krav l’s indledning angivne art.The invention relates to a container closure of the kind specified in the preamble of claim 1.

Ved påsætning af et sådant lukke på en beholder gøres garantibåndet plastisk ved opvarmning og presses derpå ind 5 til indgreb med beholderhalsens fremspring. Denne opvarm ning medfører risiko for beskadigelse af forbindelsen mellem garantibåndet og kappen ved afrivningszonen, hvor materialet er tyndt og derfor let bliver udsat for overopvarmning .By applying such a closure to a container, the warranty band is made plastic by heating and then pressed in 5 to engage the projections of the container neck. This heating results in a risk of damage to the connection between the warranty band and the jacket at the tear zone, where the material is thin and therefore easily exposed to overheating.

Fra U.S.A. patentskrift nr. 3 673 761 kendes en fremgangs-10 måde til påsætning af en kapsel med garantibånd af et termoplastisk materiale på en beholder under varmedeformering af garantibåndet, og ved hvilken det tilsigtes.at undgå den nævnte risiko for beskadigelse af afrivningszonen. Ifølge denne kendte fremgangsmåde ligger den del af garantibåndet, hvori 15 afrivningszonen findes, ikke an mod beholderen, og for under indpresningen af garantibåndet under varmepåvirkning mod beholderen at bortlede varmen fra dette kritiske område, er garantibåndet udformet med en udvidet del, der tjener som varmeafleder og derved hindrer, at afrivningszonen 20 bliver beskadiget som følge af overopvarmning. Denne udformning af garantibåndet med en udvidet del komplicerer fremstillingen og medfører et øget materialeforbrug. Endvidere bevirker udformningen, at der til fremstillingen af lukket ikke kan anvendes en form, der åbnes aksialt, 25 således at man er henvist til at anvende en form, der åbnes radialt, og som arbejder langsommere, er dyrere og er mere omstændelig at anvende.From usa. U.S. Patent No. 3,673,761 discloses a method of attaching a capsule with a warranty band of a thermoplastic material to a container during heat propagation of the warranty band, and in which it is intended to avoid said risk of damage to the tear zone. According to this known method, the part of the guarantee band in which the tear zone is located does not abut the container, and in order to discharge the heat from the critical area during the heat exertion against the container, the guarantee band is formed with an extended part which serves as heat dissipator. thereby preventing tearing zone 20 from being damaged as a result of overheating. This design of the warranty band with an extended part complicates the manufacture and results in increased material consumption. Furthermore, the design means that in the manufacture of the closure, a mold which cannot be opened axially can be used, so that it is referred to use a mold which opens radially and which operates more slowly, is more expensive and more cumbersome to use.

Det er opfindelsens formål at anvise en beholder med et lukke af den anførte art, der er således udformet, at man undgår de foran nævnte mangler, og dette opnås ifølge op-30 findelsen ved de foranstaltninger, der er anført i krav l's kendetegnende del.It is an object of the invention to provide a container with a closure of the kind specified so as to avoid the aforementioned shortcomings, and this is achieved according to the invention by the measures set out in the characterizing part of claim 1.

Ved denne udformning af beholderlukket opnås, at den del u 147465 2 af "beholderen, som området omkring afrivnings zonen ligger an mod, virker som en varmeaftager for dette område, således at det beskyttes mod overopvarmning, medens garantibåndets nederste del, som skal deformeres, er omsluttet af 5 luft og derfor vil holde på den tilførte varme.In this design of the container lid, it is achieved that the portion u of the container against which the area around the tear zone touches acts as a heat exchanger for this area, so that it is protected from overheating, while the lower part of the guarantee band which is to be deformed, is enclosed by 5 air and will therefore retain the heat supplied.

Opfindelsen angår endvidere en fremgangsmåde ved fastgørelse af det angivne lukke på en beholder, og det ejendommelige ved fremgangsmåden ifølge opfindelsen er angivet i krav 2. Den fordelagtige virkning heraf er en særlig 10 hurtig opvarmning af den del af garantibåndet, som skal bukkes ind under beholdervulsten.The invention further relates to a method of attaching said closure to a container, and the characteristic of the method according to the invention is given in claim 2. The advantageous effect of this is a particularly rapid heating of the part of the guarantee band which is to be folded under the container bead. .

Opfindelsen forklares nærmere i det følgende under henvisning til tegningen, hvor fig. 1 er et lodret billede, der delvis i snit viser en udførelsesform for lukket ifølge 15 opfindelsen anbragt på en beholderhals før garantibåndets deformation samt redskaber til opvarmning og lukning af båndet, fig. 2 viser lukket efter garantibåndets indbukning mod beholderhalsen, set fra siden, fig. 3 lukket, efter at det er taget af beholderen, og fig. 4 et lodret snit gennem en anden udførelsesform for 20 lukket ifølge opfindelsen anbragt på en beholderhals samt redskaber til deformation af garantibåndet.The invention will be explained in more detail below with reference to the drawing, in which fig. 1 is a vertical sectional view, partly in section, of an embodiment of the closure according to the invention arranged on a container neck prior to the deformation of the guarantee belt as well as tools for heating and closing the belt; FIG. 2 is a side view of the closure of the guarantee strap against the container neck; FIG. 3 is closed after it is removed from the container; and FIG. 4 is a vertical section through a second embodiment of the closure according to the invention arranged on a container neck and tools for deformation of the guarantee band.

I fig. 1 er vist en skruekappe 3 anbragt på en beholderhals 1. Skruekappen 3 og beholderhalsen 1 er forsynet med et gevind henholdsvis 2a og 2b. Et i tværsnit i hoved-25 sagen kileformet garantibånd 5 er fremstillet ud i ét med skruekappen 3 af et termoplastisk materiale, og forbundet dermed langs en afrivningszone 6, som er beliggende nær underkanten af skruekappen 3. Det indvendige vægparti af garantibåndet 5 er kileformet og udvider sig nedad.In FIG. 1, a screw cap 3 is shown mounted on a container neck 1. The screw cap 3 and the container neck 1 are provided with a thread 2a and 2b, respectively. A generally sectional wedge-shaped guarantee band 5 is made integrally with the screw sheath 3 of a thermoplastic material, and is thus connected along a tear zone 6 located near the lower edge of the screw sheath 3. The inner wall portion of the warranty band 5 is wedge-shaped and expands downward.

3 1474653 147465

Stigningsvinklen CL er mindre end 30° således, at kappen 3 sammen med garantibåndet 5 uden vanskelighed kan fremstilles ud i ét i en sprøjtestøbeform uden åbningsbakker.The pitch angle CL is less than 30 ° so that the sheath 3 together with the guarantee band 5 can easily be manufactured in one in an injection mold without opening trays.

Dimensioneringen af vinklen ft er af særlig betydning derved, 5 at der langs afrivningszonen 6 kan findes perforeringer, der ved udstødning af kappen 3 fra sprøjtestøbeformen ikke tillader sådanne store kraftpåvirkninger på garantibåndet 5, som kunne forekomme ved kraftige underskæringer.The dimensioning of the angle ft is of particular importance in that 5 along the tear zone 6 can be found perforations which, when ejecting the sheath 3 from the injection mold, do not allow such large force effects on the guarantee band 5 that could occur in heavy cuts.

Garantibåndet 5 ligger fast an mod en vulst 4 på beholderens 10 halsparti 1, således at man ved anvendelse af et opvarmet medium, f.eks. en varmluftstråle, under et passende tryk fra en dyse 11 i retning af pilen 11a imod den nedre del af garantibåndet 5 opnår en gunstig varmefordeling således, at båndets nedre del plastificeres og trykkes ind mod og 15 under vulsten 4, mens varmen i området omkring afrivnings zonen 6 afledes via beholderhalsen 1 fra garantibåndet 5-The guarantee band 5 is firmly attached to a bead 4 on the neck portion 1 of the container 10, so that when using a heated medium, e.g. a hot air jet, under a suitable pressure from a nozzle 11 in the direction of the arrow 11a against the lower part of the guarantee band 5, obtains a favorable heat distribution such that the lower part of the belt is plasticized and pressed against and 15 under the bead 4, while the heat in the area around the tear zone 6 is diverted via container neck 1 from the guarantee belt 5-

Til deformation af garantibåndet 5 kan strålen fra det opvarmede medium fra dysen 11 imidlertid også rettes mod spalten mellem beholderhalsen 1 og båndet 5> hvorefter man 20 ved hjælp af et skematisk vist værktøj 13, der f.eks. kan bestå af en trykrulle, presser garantibåndet 5 imod beholderhalsen 1 og derved varigt deformerer dette bånd. Det opvarmede medium kan f.eks. være varm luft eller en gasflamme; der kan også anvendes en laserstråle til opvarmning af båndet.However, for deformation of the guarantee band 5, the jet from the heated medium from the nozzle 11 can also be directed to the gap between the container neck 1 and the belt 5>, whereby 20 is provided by means of a schematically shown tool 13, e.g. may comprise a pressure roller, the guarantee belt 5 presses against the container neck 1, thereby permanently deforming this belt. The heated medium can e.g. be hot air or a gas flame; a laser beam can also be used to heat the tape.

25 Den nødvendige varmemængde og temperatur af det fra dysen 11 udstrømmende medium bestemmes under hensyntagen til det specielt anvendte termoplastiske materiale og dettes reaktion på varme og tryk. Også tilpasningen af højden af garantibåndet 5 under hensyntagen til de forhåndenværende 30 dimensioner og tolerancer er let gennemførlig· 4 14 7 Λ 6 5 I stedet for en dyse 11, der kræver drejning af skruekappen 3 således, at varm luft kan føres til garantibåndet 5 over hele dettes omkreds, er det naturligvis muligt at anvende flere dyser 11 eller at anvende en slids-5 formet dyse beliggende langs omkredsen af skruekappen 3> eller der kan anvendes slidsformede dyser over en del af omkredsen.25 The amount of heat and temperature of the medium flowing from the nozzle 11 is determined taking into account the thermoplastic material used and its reaction to heat and pressure. Also, adjusting the height of the warranty band 5 taking into account the 30 dimensions and tolerances already available is easily feasible · 4 14 7 Λ 6 5 Instead of a nozzle 11 requiring rotation of the screw cap 3 so that hot air can be transferred to the warranty belt 5 over of its entire circumference, it is of course possible to use multiple nozzles 11 or to use a slit-5 nozzle located along the circumference of the screw cap 3 or slotted nozzles may be used over a portion of the circumference.

Af fig. 2 ses, hvorledes garantibåndet 5 er deformeret ind under vulsten 4 og derved umuliggør aftagelse af lukket uden beskadigelse af garantibåndet. Til etablering 10 af en fast forbindelse mellem garantibåndet 5 og kappen 3 findes en strop 7, der også efter adskillelse af kappen fra beholderhalsen 1 forbinder båndet 5 med kappen 3 og således forhindrer, at båndet 5 efter åbningen skal tages af beholderhalsen 1 for sig, når beholderen skal anvendes igen.In FIG. 2 shows how the guarantee belt 5 is deformed under the bead 4, thus making it impossible to remove the closure without damaging the warranty belt. For establishing a fixed connection between the guarantee band 5 and the sheath 3, there is a strap 7 which, even after separating the sheath from the container neck 1, links the band 5 with the sheath 3 and thus prevents the band 5 from being taken off the container neck 1 after opening, when to use the container again.

15 Garantibåndet 5 er yderligere forsynet med en lodret afrivningszone 8, der letter bristningen af båndet 5 og dermed åbningen af beholderen.The warranty belt 5 is further provided with a vertical tear zone 8 which facilitates the rupture of the belt 5 and thus the opening of the container.

I den i fig. 4 viste udførelsesform for lukket ifølge opfindelsen er der i stedet for en fremstående vulst en ringformet fordybning 9 i den øvre del af beholder- 20 halsen 10. Det øvre kantparti 4a af fordybningen 9 virker imidlertid i forhold til garantibåndet 5 på samme måde som vulsten 4 ved den i fig. 1 viste konstruktion.In the embodiment shown in FIG. 4 of the embodiment of the closure according to the invention, instead of a protruding bead there is an annular recess 9 in the upper part of the container neck 10. However, the upper edge portion 4a of the recess 9 acts in relation to the guarantee band 5 in the same way as the bead 4. in the embodiment of FIG. 1.

Til anbringelse af kappen 3 på beholderen 10 bliver denne, som skematisk antydet, sat i en drejende bevæ-25 gelse om sin akse, og på samme tid bliver der via dysen II rettet en stråle af varm luft eller en gasflamme imod garantibåndet 5 skråt nedefra således, at dette udsættes for opvarmning først og fremmest på indersiden, 5 147465 men også i noget mindre grad på ydersiden. På denne måde opnås en hurtig opvarmning af garantibåndet 5 og en gunstig varmefordeling således, at båndet efter opvarmningen kan indpresses ved hjælp af en trykrulle 13, som foretager en blivende deformation.To place the sheath 3 on the container 10, as is schematically indicated, it is set in a rotating motion about its axis, and at the same time a jet of hot air or a gas flame is directed at the guarantee band 5 obliquely from below. so that this is subjected to heating primarily on the inside, but also to a somewhat lesser extent on the outside. In this way, a rapid heating of the guarantee belt 5 and a favorable heat distribution is obtained so that the belt can, after the heating, be compressed by means of a pressure roller 13 which causes a permanent deformation.

5 Ved dette udførelseseksempel er garantibåndet 5 forbun det med kappen 3 uden perforering. Derved sikres, at lukket 3 efter båndet 5's indpresning i fordybningen 9 i beholderhalsen 10 etablerer en tæt lukning af beholderen, så at der ikke kan trænge forureninger ind i denne.5 In this embodiment, the guarantee band 5 is connected to the sheath 3 without perforation. This ensures that the closure 3, after pressing the band 5 into the recess 9 in the container neck 10, establishes a tight closure of the container so that no contaminants can enter it.

10 Da denne afrivningslinie, der udelukkende er dannet ved en materialeindsnævring, yderligere er i stand til at modstå store belastninger, kan den vinkel, hvorunder garantibåndet 5 tiltager i tykkelse nedad fra af rivnings zonen. 6a, være ca. 45° > uden at der opstår 15 fare for, at garantibåndet 5 af ri ves fra kappen 3 imder udstødningen fra sprøjtestøbeformen.10 Since this tear line, formed solely by a material constriction, is further capable of withstanding high loads, the angle at which the guarantee band 5 increases in thickness decreases downward from the tearing zone. 6a, be approx. 45 °> without there being a danger of the guarantee band 5 being torn from the sheath 3 during the ejection from the injection mold.

I stedet for trykrullen 13 kan der også anvendes klembakker, trykkelister eller andre mekaniske hjælpemidler til at deformere garantibåndet 5. Det er også 20 muligt at anvende vana luft eller et andet opvarmet medium, som under stort tryk rettes mod garantibåndet.Instead of the pressure roll 13, clamping trays, pressure strips or other mechanical aids can also be used to deform the warranty belt 5. It is also possible to use vana air or other heated medium which is directed to the warranty belt under high pressure.

Ved at varmekilden rettes skråt nedefra imod garantibåndet sikres, at dette opvarmes stærkere ved indersiden end ved ydersiden, hvorved en beskadigelse af over-25 fladen af garantibåndet under deformationen undgås. Yderligere udsættes herved den nedre kant af garantibåndet, som indsnævres mod afrivningslinien, for en større varmetilførsel end det tyndere område i nærheden af afrivnings zonen. Dermed opnås på enkel måde en gunstig varme-30 fordeling og en jævn og hurtig opvarmning til deformationstemperaturen.By directing the heat source obliquely from below to the guarantee band, this ensures that it is heated more strongly on the inside than on the outside, thereby avoiding damage to the surface of the warranty band during deformation. In addition, the lower edge of the guarantee band, which narrows towards the tear line, is exposed to a larger heat supply than the thinner area near the tear zone. Thus, a favorable heat distribution and a smooth and rapid heating to the deformation temperature are obtained in a simple manner.

DK44679A 1974-08-19 1979-02-02 CONTAINER WITH A GUARANTEE BAND OF A HEAT FORMATABLE MATERIAL DESIGNED CLOSE AND PROCEDURE FOR CLOSING THE CLOSER ON THE CONTAINER DK147465C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DK44679A DK147465C (en) 1974-08-19 1979-02-02 CONTAINER WITH A GUARANTEE BAND OF A HEAT FORMATABLE MATERIAL DESIGNED CLOSE AND PROCEDURE FOR CLOSING THE CLOSER ON THE CONTAINER

Applications Claiming Priority (8)

Application Number Priority Date Filing Date Title
CH1121874 1974-08-19
CH1121874A CH589543A5 (en) 1974-08-19 1974-08-19 Plastic sealing cap for a bottle - has tear-off ring increasing in thickness downwards from tear-off line
CH1521774A CH582099A5 (en) 1974-11-09 1974-11-09 Plastic sealing cap for a bottle - has tear-off ring increasing in thickness downwards from tear-off line
CH1521774 1974-11-09
DK372275AA DK147175B (en) 1974-08-19 1975-08-18 CONTAINER LID WITH A COVER AND A HEAT DEFORMABLE, THERMOPLASTIC GUARANTEE BAND
DK372275 1975-08-18
DK44679 1979-02-02
DK44679A DK147465C (en) 1974-08-19 1979-02-02 CONTAINER WITH A GUARANTEE BAND OF A HEAT FORMATABLE MATERIAL DESIGNED CLOSE AND PROCEDURE FOR CLOSING THE CLOSER ON THE CONTAINER

Publications (3)

Publication Number Publication Date
DK44679A DK44679A (en) 1979-02-02
DK147465B true DK147465B (en) 1984-08-20
DK147465C DK147465C (en) 1985-03-11

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DK44679A DK147465C (en) 1974-08-19 1979-02-02 CONTAINER WITH A GUARANTEE BAND OF A HEAT FORMATABLE MATERIAL DESIGNED CLOSE AND PROCEDURE FOR CLOSING THE CLOSER ON THE CONTAINER

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DK147465C (en) 1985-03-11
DK44679A (en) 1979-02-02

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