DE1782111A1 - Easy-to-open can lid with a single pre-cut line and pull tab - Google Patents

Description

DipL-ing. R. Beetz et al.
D \ pl- jng. Lamprecht

503-I3.715P I7.5.I97O

! • easy-to-open doeendeokel with a · umpteen pre-cut line and a tear

lasohe

The invention concerns "ion on a slightly sy Λβη Soeendeckel bit of a single pre-sited Xdmi * and a tear-off soht"

lot known »that easily au # £ ίη * Ά <ί * cans anii

"Earth" the in the Sähe eeiats Bani «·« Xa§

vo-contained geeehloaeen "? geeohnitt" na line (Sdlllrt & jiliiiie} aufiteiet "along which aer cover slightly torn k mu ßlee * Xdnie has Torxugaweise in a bsr ^ lei ,," the $

Cover irexid has a minimal curvature radius * * Bulge within which an uprising «· b £ s.

l & suhe activated lot, which with an inatee edge · is "which eioh in its 7o" adapts to the bulge of the msn line.

New documents

209810/0079

To open the Doee you only need the tab pull up or lift up, so that your in-out edge is in the metal of the lid penetrates and an egg length dsr Bulge seen. If you then continue on the flap draws »the one within the pre-cut line is * finoliohe part of the lid torn open or torn off

The tab is attached in any known manner by riveting, soldering or welding or gluing · Sin la Deokelmetall seibat is special advantageous because the fastening can then be achieved conveniently and automatically with a fast-working tool and complete tightness is guaranteed

Regardless of the type of fastening used, however, the decorative metal is thereby In the vicinity of the fastening part « stiffened or hardened and it often happens when pulling up the flap along a straight line tangent to the fastening point breaks

The aim of the invention is therefore one with a single pre-cut line and a tear-open area easy-to-open can end »with which there is no danger there is "that the deodorant metal along the fastening point" the Lasohe breaks

The object is achieved according to the invention, that the lid in the baht of the tear-open fastening, namely the Aufroiß- bsw. Binateohkant «the laeche against

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Above this, next to this fortification atelle, an "incision" or «has a notch, the or the deformation when the Aufreißlaaohe eu the beginning of the opening process des Deckela borrowed and thus enables its perforation.

In the following the invention is based on the not «in * Described in more detail in the attached drawings j en ownI

1 shows a top view of a first example of a Lid according to the invention

Pig. 2 and 3 two variants »where only the area of the lid is shown "in which the tab is attached"

fig. 4 a more supple constraint on a second example for a lid according to the invention} and

Fig. 5, 6 and 7 three more supple variants, where again only the area of the lid is stuck in each case is «in which the flap is fixed ·

In these figures the same · element · each also have the same Beeugaeelohen

Flg. 1 shows a first example of one according to the invention Cover with a predbarea or by falling «u fastening hand 1 eur fastening on the dos ·. Parallel in addition and at a short distance from the sound of this volume 1 b «sits Cover a pre-geocimed line 2 «There, where the DeokelranA

has a minimal radius of curvature, dl · line forms one

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Bulge 21 Kit with a small »curvature radius.

Inside this bulge there is a tear-open tab 3, which is attached to the adhesive by some known saddle such as riveting, welding or soldering. The special type of fastening by means of a rivet formed in the decorative metal itself is shown in the drawing! The rivet bears the reference oak 11. On its front edge, the tab has a perforating knee or knee 3 ₉ which adapts to the shape of the bulge 21 of the pre-cut line 2.

Opening such a can with a deodorant as described Art takes place in swci phases »First, pull the tab on its opposite to the piercing or« tear-off edge 31 End 32 high, as a result of which the pre-cut line is separated along the bulge 21. The ban is drawn on at the tear-open flap, among other things to tear off the cover along the pre-cut line 2

In the formation of the reed dents 11, however, the metal of the lid is greatly hardened in the entire adjacent area or "veraprüdet _f so that it often happened" that the metal 12 tangential to Hiet to the pre-cut line out in the first phase of the üffnungsYorgange "along a line does not break ι nan crreioht therefore, as desired _v a bsw · tearing off the entire lid, but only its part l wieohen

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the break line 12 and the bulge 21 including dea Rivet 11.

This tangle also occurs when the tab is duroh soldering or · weld is attached · in the case of gluing the stiffening comes from the strength or the extent of the bonded surface, which is more considerable than the red soldered surface or welded surface or that of the Hieta

To remedy these deficiencies, the lid according to the invention in the vicinity of the pull tab attachment 11 with a further "incision" or notch 4 provided "which or" which facilitates a deformation of the deodorant metal during the pulling of the tab at the beginning of the opening process and one Break along the line 12 prevents · The cut · lies deep in the region of 60 to 70 ^ of the material thickness and the incision is completely or partially protected by the pull tab «

This additional arranged next to the fastening point Incision 4 can be relatively short and straight (not shown) or simply convex towards the fastening point 11 (Pig. 1) or concave (Fig. 2) curved · A soloh simply curved Incision can consist of two small final (opposite running) evolutions are completed, as in fig. 3 is shown here is a fastening part incision 41 curved towards concave («le In Pig. 2)

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rolled by swel small end lines 42 and igt.

When the end 32 of the tear-open area 3 leans up, enable the notches bsw »notches 4» 41 or 41 ♦ 42 a deformation of the · Deokelaetalls · Der Hie * 11 is thereby brought into an inclined position and the slit end 31 of the tab presses against the bulge the pre-cut line is «· the intended separation line» which then tears bsw · breaks · Van then needs to be removed biw » Separation of the · delimited by the pre-cut line Rope the lid only the tab 3 in the vertical direction to the top eu elehen · It comes gate »that the lid ** long during the first phase of the opening process the notch breaks, but nothing Pike parts get old «because the bite ends at the ends of the incision ·· 4 ·

However, the Deokel 1st rectangular} ee shown in the figure it is clear that the invention also is applicable to all other Deokelforaen _f as rectangular to circular "oral" and orwm nit rounded bands provided Deckelf.

It is important that the arrangement of the lashing the smallest KrUBmingaradiudee hurries near the zone Hands · not required. This precautionary measure is permitted ledlgUoh an open over the greatest possible distance of the lid.

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The flap 3 can have an "internal opening 33" which is a deformation of the Dcokels in the form of a bulge dew. a "hump" adapts in this way exact positioning of the lesobe guaranteed

Another example of an inventive designer is sacked in the Pig 4 tola 7

This lid also has one by pressing or Falsen pourable band 1 and a parallel one pre-cut sharks moved nominal dividing line at a small distance from this edge, which is marked old 2 · This line runs in the Gogensats su the according to Example 1 with a bulge provided line over the entire length parallel to the hand 1

Within the area where the pre-cut Line 2 has its smallest Krttnaungsradlue is an AufreiBlasohe 9 »which by some known means "" le is attached to the lid by riveting, TerlOten be · fused or glued »In the figure, a rivet 11 formed within the cover metal itself is swayed · The tab has a notch «- bsw · Eineteohkante 51, the shape of which is calibrated closely to the rope 22 of the neighboring pre-cut zones Line 2 adapts, and a gripping end la Fora a Kingaohlaufe 54 »

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In the vicinity of the Aufreißlasohenbefestigung 11 and dea The slit edge 31 of the tab is seen from this attachment opposite and next to this attachment point If the cover has an incision with a notch ▼ see their cutting depth, for example in the area from 60 to 709t the material deoke of the lid is «

This long incision goes well beyond that the fastening atelle 11 affected part of the lid, thanks to this considerable incision, the perforation the zone 22 by simply pulling up the gripping end of the flap enters the relatively large radius of curvature of the zone 22 and although the pre-cut line is about its Total length including zone 22 the same incision depth, i.e. for example 60 to 7C # the thickness of the Has Deokels. The incision 4 thus has the same as a cutting depth like the pre-cut line 2 »but it is of course, that he knows how to go beyond that. The specific choice is a question of the manufacturing possibilities

The incision 4 can have one of the shapes described with reference to Belspie 1. So flg. 4 a SIn-Gohnitt alt a middle but fastening point 1 to connect the concave Sereiofa ₉ facing towards the eich cwel ends 41 and with the opposite curvature.

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This blessing can also show other yoraen, as inclined in Pig · 5 to 7, for example nerden

Gsmäö Pig. 5 the incision includes a smock statue 43 the essential in Fora eini circular arc, within the * » sen aioh the fastening 11 for the bracket is located and the line 2 on both sides through swel to the Yorgesehnitten parallel straight end segment 44 is extended "

The incision according to Pig 6 has an analogous shape, however, the UittelstUok 45 is a smaller arc (or a smaller arc & afi), so that the straight extensions 46 a greater distance from the have line 2

Finally, according to fig. 7 is a aittleres piece 47 nlt el & ta but lasohenbefe st FINISH 11 toward convex proceeds is zn two rare duroh each a straight line segment 48 in Fora of tangents to the Vlertelkrela 47 extended · The geeaste incision or the notch proceeds to say parallel to the corresponding part of the pre-cut line 2 »

The overall cover can be made by any known means be reinforced or stiffened like s «B« duroh a boiled-up tea or · soldered or glued on metal tape

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or by a reinforcement rib 12 never shown in FIG will"

The recovery. Binsteohkante 51 of the flap can be more or less broad eelni ede can oleo a τοη of In the shown figures take different forms and with * apieleweiee have a slight ripple, where the Slnatechbereioh can be made roughly punctiform

Sa · The deodorant is opened by lifting it · Booh-Blehen of the gripping end 34 of the Laeohe · The metal is brioht xunäehet de «Deokels length de · Incision 4 · Then ge« The Laeohe ensures the perforation of zone 22 of the precut Line · Basically becomes by pulling on the flap the abbsw «tearing open the deocel by a complete one Durohardening e.g. tearing along the pre-cut line 2 achieved

In this way the can is easy and complete open · As the cutting depth of the pre-cut line is constant and the (sueätsliohe) notch is essentially one has or can have the same Sinsohnittlef the necessary sales equipment simply · Finally, the (euetttsliohe) notch facilitates the beginning of the The precautionary process prevents you from opening the door Breach of page 11 on its Baal ”as well as any pretense of liquid from the container during the perforation of the

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pre-cut line as the bruoh dee metals along the Notch the formation of an overprint inside the can prevents »

The attached figures show Reohteoklge container lids However, the same arrangements apply to each other shape, such as for round "oral" triangular or similar decorative foraen "

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Claims (1)

Claim 1 * Easy-to-open can lid with a few pre-cut lines and a tear-open area, known without an incision or notch (4) in the fastening (33) of the tear-open flap (3) on which the opening or piercing edge (31) the side of the fastening opposite to the flap, which, when lifting bcv · pulling up the flap (3) at the beginning of the opening process, deforms the lid and thus enables its · perforation · 2 · Lid according to claim 1 «characterized» that the Depth of the incision (4) lies in the region of 60 to 70 lbs. 3. Lid according to at least one of claims 1 and Z _9, characterized * that the incision bsrt, the notch (4) is noticeably longer than the area of the lid affected by the fastening of the Xaeche (3) and the precut line (2) exactly runs parallel to the edge of the lid 4 · Lid according to at least one of claims 1 to 3, characterized marked »that the incision bsw. the notch (4) relatively short and straight or eur la3chenbefeotigung (11) is curved in a simple, concave or convex manner 209810/0079 UnterlaQön! Art. / ä I Aba, 2 No. 1 sentence 3 the amendment. v. 4. 9.19 «. . Dock! according to claim 4, characterized daduroh, dad
incision bsw «the incision with a simple curvature (41) is completed by two small (opposite) curved ends (42). 6 · Lid according to claim 4, characterized in that the incision baw · the · notch (43 * 45) «for the laser mount (11) runs in and sideways from this concave or also convex (47) and through straight» to the pre-cut
Line (2) parallel sections (44, 46, 48) is extended. 7 · Lid according to claim 1 »characterized in that the Cover within the pre-cut line (2) by any known means such as welded, soldered or glued-on metal tape or a reinforcing rib (12) is connected » 209810/0079 Blank page