CN1777546A

CN1777546A - Can comprising a foil seal

Info

Publication number: CN1777546A
Application number: CNA2004800109437A
Authority: CN
Inventors: 沃纳·格雷伯
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-03-18
Filing date: 2004-03-12
Publication date: 2006-05-24
Anticipated expiration: 2024-03-12
Also published as: ZA200508349B; CN100393589C; EP1608564B1; EP1608564A1; US20090014448A1; DE502004012126D1; WO2004083066A1; NZ543034A; ATE495984T1

Abstract

The invention relates to a can comprising a membrane seal (5), which has a continuous bead (3) in the can casing (1), said bead facing inwards in the vicinity of the can edge (8), preferably at a distance of between 1 and 10 mm from said edge. The bead is connected in a sealed manner to a sealing membrane (5), for example a foil membrane, in particular a tear-open foil. The upper part (3a) of said bead facing the can edge and the lower part (3b) of the bead facing the interior of the can, viewed when the can is upright, extend inwards either horizontally or obliquely in a uniform or alternating manner. The bead (3) can have an approximately semi-circular or triangular cross-section and preferably has an oblique lower part (3b) in order to completely empty the can. In one embodiment, a lid (7) engages in a positive fit with the bead (3) by means of an edge thickening (6).

Description

The jar bucket that comprises foil seal

Technical field

The present invention relates to a kind of jar bucket that comprises membrane seal, wherein diaphragm seal is sealed on the flange (bead), this flange is continuous fully in the top area of jar barrel shell, thereby is offsetting the peeling force that produces on the mating surfaces of described film and jar barrel shell under the situation of the inner generation of jar bucket excessive pressure effectively.

Background technology

Some jars bucket can seal once more by closure member after opening, however other jar bucket, especially discarded jar bucket becomes sky they are opened after, and according to making the used material of these jars bucket with it as waste disposal.The jar bucket is made by cardboard, plastics or sheet metal material usually.

Often adopt diaphragm paper tinsel (constituting by paper or by aluminium usually) as jar leakproofing material of bucket.The known solution that much is used for this purposes is arranged, only enumerated a few types wherein here.Usually, sealable tank bucket opening and the diaphragm paper tinsel that is disc format with convex hole are sealed on jar inwall of bucket by this ring in jar bucket open area.Therefore, for example, EP 0 700 838 discloses a kind of jar bucket with conical jar of barrel shell, this jar barrel shell in top area, a little upwards open and thereon a diaphragm seal be sealed in the inboard.The purpose of EP 0 700 838 at first is to replace traditional sheet metal lid by diaphragm, and next is to avoid fully vertically to be sealed in film on jar inwall of bucket and to avoid using and jar corresponding technology difficulty of the U-shaped prefabricated membrane that the tolerance associated diameters deviation of bucket is relevant.

When on film, exerting pressure internally, for example during the jar bucket is filled or during air transport, can act on peeling force at diaphragm paper tinsel and flange junction.Therefore, this connecting portion must be firm relatively can offsetting this peeling force, yet this makes conversely and is difficult to tear off this paillon foil more.

Although under the situation of band draw ring sheet metal lid, use the flange in jar barrel shell to prevent injury usually at present, but prior art only discloses some has the jar bucket of the flange that is used for other purpose, yet these are different with the present invention by having other purpose and other measure.Therefore, for example FR 917 018 attempts to guarantee the fixed position of membranaceous disk, and has therefore used flange conduct during sealing to be used for the retainer of membranaceous ring.GB 532 834 attempts again to come the sealable tank bucket by membranaceous disk.The jar barrel edge that inwardly curls remains on the horizontal flanges part disk border.

The another kind of jar bucket that has flange and have membrane seal has been described in document CH-A5-643.502.Under the situation of this known arrangement, the opening of jar bucket is covered by film, and this film phonograph seal is on the continuous flange that forms by pressing jar barrel shell material.Such flange has the therefore actual at all actually use of a lot of shortcomings: this flange is difficult to make, and in fact only can just can make by multi-pass operation; It is owing to sharp-pointed bending has weakened a jar barrel shell material; It has hindered the noresidue of jar bucket to empty; It is surrendered in elastomeric mode when film seals thereon.In one embodiment, provide additional flange, this flange is used for guaranteeing that jar bung is firmly held in jar staving at the off position of described jar of bung, and this embodiment is for producing even complicated more and need more material.Required additional materials is seems insignificant under the situation of single jar bucket, but under situation about producing in enormous quantities for such jar bucket required material just quite important.For the keen competition in this field, each additional demand is even little by little, also be the shortcoming that avoid as far as possible.

Summary of the invention

Therefore, the objective of the invention is to eliminate the described shortcoming that has known prior art under the situation of membrane seal at the jar bucket.According to the present invention, by being provided especially, a kind of jar of bucket realize above-mentioned purpose, this jar bucket is under top area, jar barrel edge, preferably 1mm has the flange of inside sensing to the distance that is no more than 10mm below the jar barrel edge, and this flange is sealed on the top of this flange along the periphery extension and the diaphragm seal of whole jar of bucket.

In this article, term " top " is construed as the side of described flange surface to the jar barrel edge." bottom " of flange is construed as this flange surface to jar bucket in-to-in one side.

Further improvement of the present invention example and favourable improvement example are described in the feature clause of appended claims.

Flange according to the present invention has fully and extends axially, and selectively makes by (in self known mode) crimping in single operation.And flange does not almost have elasticity when sealing thereon when diaphragm seal (for example, diaphragm paper tinsel).This makes the diaphragm paper tinsel of sealable tank bucket more stable with being connected of jar barrel shell, and however, also can not make and tear diaphragm difficulty more.Owing to formed according to flange of the present invention, as Fig. 1,2 and 3b shown in, so in fact this jar bucket can be turned and can not stayed residue, and can make the reduction degree minimum of jar barrel shell.Because therefore flange can maximally utilise jar internal capacity of bucket under the jar barrel edge or the structure below tight.

The present invention relates to a kind of jar of bucket, this jar bucket comprises: membrane seal, it is at the jar barrel shell, in the zone of jar bucket opening, preferably have a flange in the distance apart from the 1mm to 10mm of jar barrel edge, this flange extends around whole jar of bucket periphery, and (for example by diaphragm seal, the diaphragm paper tinsel), especially peelable foil seal, the top surface of this flange is to jar bucket opening or towards the jar barrel edge, the bottom faces of flange is to jar bucket inside, consider jar that bucket is vertical, consistent or level or the inclination alternately of therefore described flange extends internally.In principle, any combination of the top of level and/or inclined flange and bottom all within the scope of the invention.Yet preferably, at least a portion of described flange bottom is a bevelled, so that the emptying of jar bucket.Tight seal between closing membrane and jar bucket flange can pass through adequate measures, and for example adhesive agent bonding or heat seal obtain.

The invention enables also and can diaphragm paper tinsel (it preferably includes paper or aluminium) and this part be sealed, perhaps make described diaphragm paper tinsel seal by means of being applied to the heat sealing layer on this diaphragm by means of the adhesive agent on inclination that is applied to described flange or the horizontal top (at it after the initial or cooling thereupon by heating).Yet this also guarantees to keep the diaphragm paper tinsel better, thereby has prevented that paillon foil flange accident internally from removing (peeling off), because only the endogenetic process that is directed upwards towards of a part is making on the direction of bonding surface lifting.

Description of drawings

The explanation in further detail with reference to the accompanying drawings of further feature of the present invention, advantage and details.In the accompanying drawing:

Fig. 1 represents first embodiment, comprises the vertical component that this diaphragm paper tinsel is fastened to semicircular flanges and jar bucket inwall by the ring part of diaphragm paper tinsel;

Fig. 2 represents second embodiment, and comprising not to have the diaphragm paper tinsel of ring part to be fastened on the triangular flanges, and this flange arrangement is under last jar of barrel edge; And

Fig. 3 a and 3b represent the additional embodiments according to flange of the present invention.

The specific embodiment

As shown in Figure 1, a jar barrel shell 1 has crimping 4 at upper can barrel edge 8 places.Below the summary of upper can barrel edge 8, that is, preferably, be formed with towards in-to-in semicircular flanges 3 in distance apart from jar barrel edge 1 to 10mm.On a side 3a of upper can barrel edge 8, diaphragm paper tinsel 5 is sealed in Reference numeral 2 places in self known mode at flange 3, and this diaphragm paper tinsel can have unshowned self known draw ring (tab) of tearing.Yet according to the present invention, described diaphragm paper tinsel is to the top of small part sealing flange, and preferably sealed is at the flange top place and adjacent, the linear segment of jar bucket inwall.

According to second embodiment as shown in Figure 2, a jar bucket main body 1 is provided with triangular flanges 3, yet, itself and the border of jar barrel shell or transition portion circle preferably.Diaphragm paper tinsel 5 is at the 2 part 3a places that are sealed to flange 3, and part 3a points to upper can barrel edge 8.Because this part tilts, thus act on the internal force that produces by jar bucket pressure on the diaphragm paper tinsel 5 only part as peeling force.Therefore, metallic paper 5 can provide relatively large opposing accident and the ability of not expecting of peeling off.In addition, a jar barrel shell 1 can be closed by lid 7, and this lid 7 is engaged on jar barrel edge 8 by it and to small part and flange 3, preferably engages with rim lip 6 and remains on the upper can barrel edge 8 in the mode of interlocking.

Under situation according to the flange of Fig. 3 a and 3b embodiment, owing to jar internal pressure of bucket act on the diaphragm seal peeling force in addition than littler under situation according to the flange shape of Fig. 1 and Fig. 2, thereby the ability that the opposing diaphragm is peeled off even stronger.

In addition, have tilting bottom 3b, thereby but make thoroughly emptying jars bucket contents of noresidue ground according to the flange 3 of the embodiment of Fig. 3 b.The sweep of the flange between horizontal linearity top 3a (under the vertical situation of jar bucket) and tilting bottom 3b can for the angle arranged or sphering.For tilting bottom 3b, both can be linear, also can be crooked, and the angle of the horizontal linearity part 3a of opposing flanges 3 (under the vertical situation of jar bucket) is unimportant, and under any circumstance, any skew of bottom 3b and horizontal route all helps thorough emptying jars bucket.Can have 50% of its radial depth for example according to flange of the present invention, about alternatively inside of 100 to 150% (axially) highly.Yet this flange also can have less internal height, especially under the situation according to the horizontal top 3a of the flange 3 of Fig. 3 and Fig. 3 b (under the vertical situation of jar bucket).

According to the present invention, the resistivity to peeling force that also guaranteeing to connect the place provides increases, and needn't apply bigger power to be used to tear this junction.Therefore, the optimization of the solution of the technical requirements that two parts are conflicted is provided.

According to the present invention, needn't form and use second flange that under the situation of the type jar bucket, needs in addition.As a result, the quantitative change of number of flanges minimizing has become the measure of qualitative change: use single flange to realize two various objectives.

It should be understood that according to measure of the present invention not only provides simple and economic solution, and helps to eliminate tolerance issues and needn't use upgrade kit.

Claims

1, jar bucket, it comprises a jar barrel shell (1), jar barrel edge (8) and membrane seal (5), it is characterized in that, this jar bucket is near described jar of barrel edge, preferably apart from the distance of this jar barrel edge 1mm to 10mm have in the jar barrel shell continuously, towards in-to-in flange (3), this flange is connected on diaphragm seal (5), for example diaphragm paper tinsel, the especially peelable paillon foil by a sealing member, towards the top of jar barrel edge (3a) and flange towards jar bucket in-to-in bottom (3b) under the vertical situation of jar bucket consistent or level or extend internally obliquely alternately.

2, according to claim 1 jar of bucket is characterized in that, described flange has roughly semicircle or leg-of-mutton cross section.

3, bucket according to claim 1 jar is characterized in that, described flange has horizontal top and inclination or curved bottom under the vertical situation of jar bucket.

4, according to each described jar of bucket in the claim 1 to 3, it is characterized in that described inclined-plane is about 45 °.

According to each described jar bucket in the claim 1 to 4, it is characterized in that 5, described diaphragm seal is connected on the adjacent part (1a) in the top of jar barrel shell and described flange by a sealing member in addition.

6, according to each described jar bucket in the claim 1 to 5, it is characterized in that described diaphragm seal links to each other with described flange, and use a sealing member to be connected with the adjacent part (1a) of jar barrel shell (1) alternatively by adhesive agent bonding or heat seal.

7, according to each described jar bucket in the claim 1 to 6, it is characterized in that, also comprise jar bung (7) that is engaged on the described jar of barrel edge, described jar of bung is by rim lip (6) and described flange (3) partial engagement at least.