DE3048310C2 - Cap-shaped lid provided with a sealing insert for closing glass containers shaped like a drinking cup - Google Patents

Abstract

1. Cap-shaped cover (1) provided with an annular sealing insert (14) and made from relatively soft sheet metal, but which has a certain elasticity and which is used for the mechanical first time sealing of a glass container (2) in the form of a drinking cup, which has a small opening edge bead (22), which is unavoidable from the manufacturing standpoint, or a conically tapering outer wall in the vicinity of the opening edge, the closure being brought about by applying the cover in the sloping position to the container opening, drawing along the cover by the moved past containers beneath it and tilting the cover into the closed position on the container opening, and whose cover side wall (12) is bounded by a flanging (13) of its free edge and projects inwards for engaging behind the opening edge bead (22) or the outer wall of the glass container, can be tapered in the vicinity of the opening edge, the internal diameter of the cover side wall at the projecting points being somewhat smaller than the external diameter of the opening edge of the glass container which is to be engaged behind, characterized in that the inwardly projecting cover sidewall (12) has an uninterrupted, all-round corrugation (15) with the cross-sectional shape of an angular means whose apex is directed inwards and having straight sides (16, 17) and the elastic sealing insert (14) extends on all sides over the inner corner between the cover bottom (11) and the cover side wall (12) to part of the upper side (16) of the cross-sectional shape of the corrugation (15), whose other side (17) is adjacent to the edge flanging (13).

Description

Edge of limited side wall consists in which to about half height a radially inwardly projecting annular bead with a semicircular profile is arranged, its connection is formed with the cylindrical parts of the cover side wall by rounded pressure fillets. In order to bring this cover into the closed position, it is necessary to exert a strong axial force in order to the restoring force of the radially inwardly convex bead part of the lid side wall and its rounded one To overcome fillets and the adjoining cylindrical side wall parts. Even To open this known cover, which is to be done with the aid of a tool, a great deal of force is required required even if there is no vacuum in the closed container. Because of this need for strength but they are also suitable because of the different configuration of their cover cross-section known lid not for closing shaped like a drinking cup glass container, which only one small, for manufacturing reasons, mouth bulges of different sizes (blown glasses) or only a weak conical taper in the direction of the container bottom in the immediate vicinity of the bead-free mouth edge (Pressed glass) have.

The invention is based on the object of providing a cover of the type mentioned at the beginning to create a simple design that has neither axial ribs in its cover side wall nor in places a requires permanent deformation when it is applied to the container, and which can be achieved without a closing head with less Application of force in a manner similar to that known from DE-OS 15 32 411 on the cover to be closed Apply the container and repeat it to gradually consume the product open and reseal with sufficient hold.

This object is achieved in that the cross-sectional profile of the in the side wall of the prefabricated cap-shaped cover provided bead the shape of an inwardly directed angle with straight flanks. To close the glass containers, these Deekel like those after the DE-OS 15 32411 from the side in an inclined position up to brought in via the mouth of the container and fastened by slight axial pressure, the The bead first engages behind the edge of the container mouth on one side, while the lid takes effect the axial pressure exerted on it is tilted into the closed position. It is thereby achieved that the inside dimension of the angles. ”icke kept extremely small can be without the bead undergoes permanent expansion when the cover is pressed on, and is ensured is that the lid after reclosing, even with different mouth widths and Out-of-roundness of the glass, has enough grip.

One possibility for the advantageous further embodiment of such a cover is that the Sealing insert covering part of the inside of the lid base is sandwiched on all sides over the inside corner see the cover base and cover side wall on the upper flank of the cross-sectional profile of the bead in the cover side wall extends. This ensures that the inclined position of the cover during placement first the elastic sealing insert at one point & ■> is temporarily blocked by the rigid container mouth edge touching it, whereupon it, if the lid has been tipped into its fastening position to relax and return to its old shape seeks, whereby the lid experiences a centering of its position on the container. The clear while the bead in the lid wall only needs to be a little smaller than the outer diameter of the Container rim bead, and the necessary to press the lid into its final closed position Strength is very little. Also for repeated opening and closing of the lid during the little by little If the filling material is consumed, only small forces are required.

The invention is explained in more detail below with reference to the drawing, for example. Show it

F i g. 1 shows a vertical section through a closed with a lid according to the invention according to Art a glass container shaped like a drinking cup,

F i g. 2 the vertical section through one? the same container during the first phase of lid fastening, in the inclined position, the lid initially rests against the container rim at one point, which is into the ring-shaped sealing insert, whatever the inside corner covered between the bottom of the container and the side wall of the lid, nestling

Glass containers shaped like a drinking cup, as mentioned above, consist of relatively thin-walled glass. If it is a question of blown glasses, they either have a small one, in the case of the Manufacture necessarily resulting mouth rim bead or instead, if they are made of pressed glass exist, a conical taper in the immediate vicinity of their mouth. According to experience occur with all glass containers of the type in question here inevitably deviations from the circular shape of the mouth edge with diameter fluctuations up to 1 mm.

In the drawing, 1 is the circular lid, 2 is the preferably shaped like a drinking cup Glass container. Only the upper part of the container 2 is shown. The container wall shown here as a hollow cylinder 21 has an unpolished mouth edge, which for technical reasons has a small one Has edge bead 22. The cover 1 consists of the cover base 11 and the cover side wall 12, which is limited by a flanged edge bead 13. On the inside of the lid base is an annular one Sealing insert 14 attached. It covers an annular zone on the inside of the lid base and extends on all sides over the inner corner of the cover base 11 and cover side wall 12, which has a circumferential, has inwardly projecting angular bead 15, the diameter of which is slightly smaller than the outer diameter of the mouth edge 22 to be reached behind by the bead 15 when the dachshund 1 is in the closed position of the container 2.

The cross-sectional profile of the bead has the shape of an inwardly directed angle with straight flanks 16, 17. The bead can be produced in a simple manner with the aid of a correspondingly profiled rolling tool. Of this different cross-sectional profile shapes of the bead are also possible.

The edge of the cover side wall has a bead here 17 to the outside. But it can also be beaded inwards.

Furthermore, the z.i closing container can instead of a Cup shape with cylindrical wall also have any other shape, the mouth of the bead 15 on the cover can be engaged so z. B. a curved shape in the manner of a barrel or the

Shape of a truncated cone. The container mouth need not have a bead when the container wall starts from the container mouth to Container bottom or at least tapering conically over a certain distance of the container wall.

The lid according to the invention is particularly suitable for filling goods to be filled cold that have only a small amount of Require a vacuum between the filling level and the lid, as mentioned above, with the help of a short-term Steam jet can be produced immediately before sealing. The vacuum can be checked at any time after the closure, since the lid base 11 is at proper vacuum has a flat curvature inward, which would disappear in the case of a subsequent ventilation, which is easy to determine.

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Claims (2)

1 2 a lid held in an inclined position and in each case one to patent claims: closing container below it leads past, so that it with its upper edge the inclined 1. iCap-shaped, with a sealing insert, pulls the lid off its holder and accidentally, to close a glass container 5 drags The attachment of the lid is done through Serving cover from relatively soft, light pressure in the axial direction. A locking company A certain amount of elasticity having sheet metal, tool (sealing head) is not required. And eat Side wall by flanging its edge immediately before the cover is pressed onto the bed is limited and a single, without sub-container, can by steaming the surface of the product with circumferential, inwardly protruding bead 10 has a brief steam jet from a nozzle for sticks, whose inner diameter is slightly smaller, rilität is ensured and a vacuum can be created than the outer diameter of the need only be relatively small in the closed position of the lid from the bead to be reached from behind. edge of the container mouth, which means that large manufacturing tolerances are to be expected, shows that the cross-sectional profile of the in FIG Side wall of the prefabricated cap-shaped type in question here without difficulty a lid provided bead (15) close the shape of a wall-free. The well-known Deknach mentioned inwardly directed angles with straight flanks have been widely used for many years (16,17) has turns ^ 2. KappÄnförmiger lid according to claim 1, da- 20 It is also known, with cap-shaped sheet metal cover characterized that the one 1 eii of the interior none of the genus mentioned above, the one with a side of the lid base (11) covering the sealing sealing tool (sealing head) onto the insert (14) can be applied on all sides over the inside corner of the two-eared containers, during the see cover base (11) and cover side wall (12) the closing process by means of the closing head on the upper flank (16) of the cross-sectional profile of the 25 circumferential, inwardly projecting bead to be created (15) in the cover side wall extends gene, the inner diameter of which is slightly smaller than that Outside diameter of when the cover is in the closed position from the bead to the container mouth edge reaching behind (FR-PS 14 38 479). Let such closures “But only with the help of a locking tool The invention relates to a cap-shaped, and with the application of considerable forces on the Behälmit with a sealing insert, apply to the sealer. Ben of a glass container serve open lid from behaving- It is also a for canning container with out- nism moderately soft, but a certain elasticity on the projecting edge bead of certain cap-forming sheet, the side wall of which is limited by a flanging 35-miger sheet metal lid with a sealing insert and beading edge and a single, known without sub-division of the free edge of the lid side wall, circumferential break inwardly protruding bead in the circumferential direction has bead-like, the inside diameter of which is slightly smaller than from the lid side wall to ^: nnen protruding the outside diameter of the in the closed position of the Dek segments with interruptions in the form between ihkeis from the bead to be reached behind the container undeformed wall parts provided ^you are ^"g ff" ^d f ·. . _K,. . ,. . . ^{in the closed position} from below against the edge bead It is known to be concerned in the food industry (US-PS 23 28 365). When applying the Dek container with corresponding lids as packs, it is necessary to use mayonnaise and the like by applying even pressure in a vertical direction against the lid, especially for so-called cold products such as mustard. _{45 5Ο} ΐ | _εη the segments while passing the container • -A A '™ «? ^ter f! ^{Such Packun} S ^en terwulstes as a result of the elasticity of the material vorüberist.η DE-OS 1532411 described. In this case, the lid is stretched so that the lid is familiar with the lid on the circumference of the lid side, snapping into its closed position on the container garment at regular intervals on the lid base Embossings 50 internally protruding segments should enable their elastic in the form of axial ribs with an approximately circular arc-like yielding, because it is assumed that the profile is intended. The ribs jump inwards so that an uninterrupted circumferential V-shaped NEN up over the outer circumference of the embossing of the lid side wall to be closed would be too stiff to allow a container in front and are in only a slight, preferential elastic yield under the action of the axially up wise there are five total numbers. The ribs 55 the closing force acting on the lid as well as its instruction to allow such an inner protrusion over the edge fit to any fluctuations in the diameter of the bead that it allows when the lid is applied to the edge of the container. Another, in which its final closing position, a permanent deformation, is the undeformed wall parts between the inwardly projecting segments of the bulge of the container in the area of their intersection with the edge in the form of a function ascribed to the cover side wall Edge bulge shape relatively small bulge in it to form stiffening ribs that experience a collapse to the outside, while the rib ends fold under the lid side wall under the action of half of the intersection due to their dimensional stiffness and closing force on the lid remain deformed during the closing process. should prevent. The putting on of lids, which are in question here, is also used for containers with a strong radial movement The type of convex rim protruding on the outside of the container provided with the filling can be adapted mechanically by automatically moving the tcr closure known (DE-OS 17 61 438) .der from one Cover made from the ropes. It is each lid with a cylindrical, flanged by their