DE2113922A1 - Hermetic closure for container - Google Patents

Description

3569

DR.-ING. R. DÖRING DIPL.-PHYS. DR. J. FRICKE

BRAUNSCHWEIG MUNICH

Continental Can Company, Inc.

633, Third Avenue

New York 17, N.Y. /UNITED STATES

"Hermetic closure for containers"

The invention relates to a hermetic closure for containers, in particular for those which are in the closed state have a lower than atmospheric pressure inside, consisting of a closure cap with an annular Sealing strips of noticeable thickness in the outer edge area of the cap mirror and one adjoining it Apron section, as well as a container neck with a cooperating with the sealing strip upper edge and a the circumferential section supporting the skirt section.

Such hermetic closures are known, the cap being attached to the container neck by a simple pressing process lets put on. The required holding force of the cap on the container neck is essentially by maintain a negative pressure in the head space of the interior of the container.

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2113S22

With such closures there is often the risk that the opening edge when the closure cap is pressed on of the container severing the annular sealing strip inside the cap, taking into account that at the elevated temperatures at which the container is closed, the mass of the sealing strip is much more easily injured.

It is the object of the invention to develop a hermetic closure of the type specified in more detail in such a way that the risk of severing the sealing strip is excluded and a forgery-proof by negative pressure is more effective and a non-reusable closure is obtained which has only a very low oxygen permeability.

This object is achieved in that the Apron section at a predetermined axial distance from the cap mirror receiving the sealing strip Has stop section, the axial pressing on the closure cap comes to rest against a stop surface of the container neck, the distance of which from the container edge by a predetermined amount, which is smaller than the thickness of the sealing strip, is less than said distance.

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2113322

In one embodiment, the stop portion
and the stop surface be mutually corresponding frustoconical annular surfaces of the same inclination. Due to these inclined surfaces which meet upon pressing, the extent to which a closure cap can be pressed onto the container is very precisely limited. The closure caps and the cooperating sealing surfaces of the container are, as indicated, dimensioned so that a
a predetermined distance remains between the sealing edge of the container shark and the cover surface receiving the sealing strip, in which distance the sealing strip is correspondingly compressed to produce the desired seal. The remaining distance ensures with sufficient certainty that the sealing strip is prevented from being severed when the caps are pressed on.

Here, the skirt portion may be advantageously made of a semi-rigid material%, so that the frustoconical surfaces can adapt precisely to one another very particularly in non-circular output form of the closure cap.

Advantageously, the closure cap can be made
Consist of aluminum.

109884/1025

jüei another embodiment form the stop., - section a bead of the apron section of the cap be while the d arc it sus & mmeni.irkende ansenla il area a Behal L'shoulder is. This becomes the same precise limitation of the press before the cap aiii "den Container neck guaranteed,

In the case of hermetic closures for those under vacuum Container consisting of a cap with a light strip on the one hand, the opening of the Closing cap to facilitate and without foreign tools on the other hand to ensure that an unauthorized opening of the container is easily identifiable at any time, the invention is particularly useful when the asror is closed Art before that a ventilation opening that can be broken open by hand is provided in the mirror of the cap.

As a result, closures are obtained that do not remain firmly on the neck of the container without destroying the / akuums, but can easily be dissolved when in use by the vacuum is released.

With the measures according to the invention are hermetic Closures of the type in question are obtained that are relatively

109884/1025

MlIi- are of great value in packaging _f ; of food r, oesitr, en, since the closure caps can be applied at high speed. he kept the vacuum generated extremely firmly and safely due to α es ±: i the head space of the container in the event of condensation of a vapor atmosphere in the sealed position.

uie üriiidting is illustrated below using schematic drawings explained in more detail using several exemplary embodiments.

I ¹ Jε lines:

i "i._. 1 --iue Gout on top of an occlusion called the Urfin-

± 'i_. 'J coi ·; c in enlarged Ma'3ntnb in vertical section ^ i non Toil of the hei metiseheη closure according to Pig. 1, v / o bo i der üchnint along the section line 2-2 of i''i>".1" is efiUirt.

-L ¹ '. ^. The closure after i ¹ '! ^. 1 in a Si.ui: right section on a smaller scale along section line 3-3.

i'ig. 4 illustrates a modified embodiment do;; new fastener in the representation similar to that according to ϊί ^ .3.

10988A / 1025

BATH ORIGINAL

In the exemplary embodiment na - ": IiPi_. Ϊ ei ;: ', 1.Λ- e. \ Ne closure cap 5 is provided, which has an ocivlemfor-ai ^ en body with a flat upper mirror 6 in which ;: an nT ch externally rising ring-shaped ITu ü 7 η-he represent. iiarri of the lid surface is provided, v ^ -hrend from the; i opie ^^ l an apron section 8 protrudes ^ iuminiuri-Dlech, "./ tinplate or other. _suitable material can be produced in the known manner. The 7th chiv .. '. <Shell i: ann in the appropriate' ..eisenpainted or πΐτ ai ai whose coating on the inside and on the outside may be lost, v.Ocei it is Lim protective or decorative lacquers or coatings, which are well started here for these purposes.

■ ^ he annular channel 7 Mile. Tand-the: le;> Deckelnr.iegels serves to Au ^ nPhme a by flowing a; ebrachten seal strip 10, of a ⁿ ^ as plr tisol consist> ftr n New York Convention in a known V / eire on site and S parts can have been produced by flowing in the ^ sealing compound, v / ie this is explained in more detail in US Pat. No. 2,841,304. I.ormfilerv, ei .-; e the seal 10 has a vertical height or iJicice approximately equal to the depth of the channel 7, v.as also corresponds to the vertical dimension or height of the circumferential shoulder 11, which the inner delimiting wall dus Kt- nals 7 forms.

109884/1025

miZ * dO to ' BAD ORIGINAL

Ir, Figs. 2 and 3 is: the cap 5 in the pressed-on state _t , 'osei.; T, in * elci: .em you your a vacuum in £ ibdi honoring üin ^ riff with · the neck 12 of the 13 indicated container öt2ht. IXr lielJ-l '^ r lip.yr of sheet metal, or of glass or Ii ⁿ tik bc-f-te ^ .an. 'Hex Behaltorhols 12 of the container 13 is r.ic an inwardly trolled j / r.lst 14 on the upper edge, the Behrilv röiTnun.-v provided, which forms one of your; iu ;; ichtun ;; 3 part, which in the DiCiItUn ₁ -. IC abiii a small piece of v; ice a .. can rub.

^ uI oc: -ürzenabsc}:> ii it ti the versclilui.-ucappe ^ ends at the bottom ii. an il ^ ohen '., ilst 115. Above the V / uMes the ic'-ürstHixe.section 8 is inclined outward in the shape of a cone, v. ie uei 1c rjx-; is interpreted. This A ¹ Oschnitt sits firmly on a correspondingly inclined au ^ s ke _e elstumpfförmigen Abs-hnitt 17 aes 3Eh: ilterhnlses 12. It should be noted there.? the remaining! of having eil ochürsenabschnixtes 8 a 'i ^l orm other than the kegelstumpfi'ömige i'eil sixteenth The section ic and the band-shaped area 17 are precisely shaped to have the same hot angle su, the inside diameter of the section 16 coinciding with the outside diameter of the section 17. Due to the mutual engagement of the inclined portions 16 and 17, the ncoh downward movement of the closure cap 5 on the container neck 12 is limited so that the edge of the

109884/1025

BATH

2113S22 -S-

Sealing bead 14 on the container neck 12 cannot more closely approximate the horizontal section of the channel 7, ala this is shown in FIGS. 2 and 3 ^ e. through this, eir. Direct contact between the VmIst 14 and the ίί-anal 7 and thus a severing of the seal 10 is prevented. A severing occurs "very easily in the case of closure caps of the type described in IPrε _or εrjöenden, if they are subjected to a high level of permeability in order to obtain the conditions necessary for the sterilization of leoer, means. Plastisole and others Sealing materials become less compared to penetration at such elevated temperatures. It is also evident that if the seal sometimes burns through, the seal does not work ion of a closure cap essentially vcrloron. eh'o, so it's scrap *

The closure cap 5 has in its upper cover surface 6 an easy-to-open ventilation opening which is irr. The example shown is designed as an integrally molded x.lex 20. A handle part 21 with a handle section 22 is attached to a rivet-shaped section 20. During manufacture, the closure caps 5 are designed in such a way that the grip tab 21 and the grip section 22 rest flat on the top of the mirror 6. The cover material is weakened around the rivet, so that when the

109884/1025

Griffabsclinittos 22 the Nie tabschni t; t tears open and in the in Ji ¹ It-. 3 can be lifted off in the manner shown. When this occurs, the lid surface has a ventilation opening .'i. The rough tear of the opening 23 protrudes in the process. This achieves ur _i ir.2 interaction nii-j the small size of the ventilation

ö 'IiIiUi-; 2 ~ y a person, especially a child, without grefe: r {oir.-ir Verletsun, - the inside of the cap 5 with the tongue vci. Mihiiftandem can free container contents. The edge 24 ν i: α:; ^ierb: -i covered by the üriffanschnitt 21st

The \ x 3 x 5 ochluirkappen könr: en easily with high velocity> e ^": t- ρ.ιχϊ Yorjefüilte container through which is available commercially Ve:.. ■ ScIII .iiiffiasciiiiion aiu _c are eLracIit The air OAER at- spzihxe in the narrow copies that remain in the filled containers is displaced by steam during the sealing process corresponding vacuum, which hold the caps firmly in place on the container neck.

In the relationship between the veil cap and the container in the embodiment of FIGS. 2 and 3 it is

109884/1025.

OR (GiNAL

2113S22 - λο -

extremely difficult, such a cap h> to remove, as long as the vacuum is "self v / hen a Veisuch is emacht fc to the cap ^l j by imprints OAOR Ablieben means of a tool to remove aas unxor the flat! '"' alzrand 15 the apron section Ö is attached, vira this flange edge is damaged to such an extent that the opening book can easily be determined.

On the other hand, the cap can easily be removed be that one lifts the Hing 22 and uie one-piece Connection between rivet 20 and the reads des Lid mirror / 6 interrupts. The small ventilation opening 23 ensures that the vacuum is released, whereupon the Cap can be easily lifted off without further deformation. This ensures that an if he son find out in a self-service shop without further ado can whether someone can create a cap 5 has made and whether the ventilation has been ripped open is because then the ring 22 is at least slightly opposite the lid surface is praised and the closure cap sits loosely on the container neck.

In Fig. 4 a modified embodiment is shown, in which the underside of the flat beaded edge 15 'on the Top of a shoulder 19 comes to rest in the

10988A / 102S

BAD ORKStNAL

Container neck shown at 13 'is integrally formed. In this embodiment, the inclined sections on the skirt 8 'of the cap 5' and on the container neck 12 'do not need to cooperate with one another, since there is no gap between the underside of the bead 15' and the shoulder 19 so that a knife edge or the like can be applied another v / eric tool is not possible dIE ■ is also closure is tamper-free, the closure cap can be easily removed by the user but after d breaking the vent.

Instead of a single piece of ei'ormten ^ Hieΐes in Deckelfi '; _{ie: i-:} .el may be provided as rupturable by manual ventilation slot one small preformed opening, which tt with a anheftendem by adhesive closure tape mi L Grif fribsclmi is sealed. The fastener tape should be correspondingly resistant to aas

liurchdxinjcn of oxygen and air. Such ver ^ schliiübänaer are in the Hanuel.

109884/1025

Claims (2)

- 12 claims Hermetic closure for containers, especially for those that are locked inside have a lower than atmospheric pressure, consisting of a closure cap with an annular Sealing strips of noticeable thickness in the outer edge area of the cap mirror and one adjoining it Apron section, and a container neck with an upper cooperating with the sealing strip Edge and a peripheral section supporting the skirt section, characterized in that that the skirt section (b) at a predetermined axial distance from the sealing strip (10) receiving cap mirror (6) a Has stop section (16 or 15 ') which, when the closure cap (5, 5') is pressed on axially, to the plant on a stop surface (17 or 19) of the container neck (12, 12 ') reaches the distance from the container edge by a predetermined amount, which is itself smaller than the thickness of the sealing strip (10), less than is the said distance. 2. Closure according to claim 1, characterized in that the stop section 109884 / 102S 2113S22 (i ■ ".-} and ·;.: 1- · .i _; :; uul · ·! 'lache (17) einr-üder eii ?' ■ -. · , · :: ·. ο Λ-: · 5 _: ,: - 1 -,:; ιιπ \. -: \ ,: 'ör;. ". I;" e Längf lache-.. .1 · -: icli ν: /, ... 1 ichüi. JAiiCaae ^ ers sine ;. 2, el r α η r ο Ii ;; :. ζ .- ■ i ^ s, äL -... · I =: jC.iii:,;:;: ύ, j ".itt x: - ..: xu.J up cn claim Ί, α;> durc λ _Cr e ο ii π seic Ii ii eu, ctr./3 eier Axir.CV ₁ Ia. ao ^ c ^ ad ".. t ii ..: ·:" ϊ.ϊΜϊν ·! \ 1?. "ί. Cl ¹ : ') de? Soiiür-onabsclinittes luic ·. die ■ ·:".:. ""-. i "l - ;, chj -j type container he schul zex (19) cind. Ii. ιΛ .. .'-} .. .oh-r Front. · Ju;.; fvr uriü ^ x Vaicuiim a ^ eh:. "-. L." ..., be: Uih-iiu ;;. u :; jjiier before _; unlui31iappe with Uicut- -. /f..:'ii; il i ::; Ka .υ- iiGpie .ti and one den Behal "Gbrhals .:. ι tiirc 'jii''i'.. ..- ii üc.'Äir aena.büoiini υ u, iihsbta fiaere by ... · .luoa 1 iii. ^'; 4, dad α χ chge ic ο η η ■ : ü .. ο ti u ο "t, üai> im La ρ ρ en so ie .re J. (b) ei re rait- ," X., riarid breakable d-blut'tun ^ BÖJ'i'nun, ; (L '; 3) vox ^ e- ■ "<·.'.> -. ■ ·. I: jt _t / or r; '! »! Lub according to Arifjp mäh 'j, d ad urchyeke η η:'<: .ι ο α net, dato in deru caps up ie ^ el (b) ο Ln 10988A / 1025 BAD O "" O! NAL 2113322 rlacli au:;. 10988A / 1025 SAD