JPH06509045A - fully open can lid - Google Patents

Abstract

A can end closure comprises (i) a panel formed with a rim portion (2) and (ii) a central panel (4) substantially fully severed from the rim portion (2) and having a peripheral free edge portion (5). The rim portion is formed with spaced parallel folded portions (F1 and F2) defining a groove G within which the peripheral free edge portion (5) of the central panel (4) is positioned. Sealant (8) hermetically seals the central panel (4) to the rim portion (2). A push-in closure C in the central panel (4) comprises a closure tab (10) severed from the panel (4) along line (11) except for a hinge portion (12) and has a peripheral free edge portion (14) in overlapping underlying relationship with an edge portion (15) of the central panel (4). A latch means (17) formed in the edge portion (14) and engaging the free edge of the edge portion (15) prevents unintended inward movement of the tab (10). Sealant (18) hermetically seals the push-in closure C. An inwardly direct abutment (19) formed in the central panel (4) adjacent the closure C opposite the hinge portion (12) comprises a substantially vertical wall portion that defines an anchor point for the tip of the bowl of a spoon inserted in the opening formed in the central panel (4) by inward displacement of the closure C and prevents withdrawal of the spoon as the spoon is levered against the rim portion (2) to deform the central panel (4) and remove it from the rim portion (2). The position of the peripheral free edge portion (5) between the folded portions (F1 and F2) facilitates easier removal of the central panel (4) from the rim portion (2) with a less variable removal force than was required with prior art constructions.

Description

[Detailed description of the invention] fully open can lid Technical field The present invention relates to a lid for a container, and more particularly, when the lid is opened, substantially all of the end panel Concerning a fully open type lid that can be cut out.

Background technology Most open ends in use today are adjacent to the rim of the end seamed to the body of the can. having an end panel that is notched or weakened along an abutting line; Ru. The use of notched end panels has at least two major drawbacks. Ru. First, the scoring operation prevents leakage of contents from between or air inside the can. Capacity for end removal while preventing perforation of end panels to avoid leakage. It cannot be controlled as precisely as necessary to obtain easy breakage. Inside the can Air leakage can have serious consequences in the case of food products, and It will be recognized that it has the potential to spoil other canned products.

Second, the notched end panels of the type described above are This leaves sharp edges on the edges of the cut and cut discs. this The sharp edges of the This poses a risk of cutting someone's fingers.

The latter problem can be solved by using a panel that helps protect the untouched edges after opening. reduced by forming complex multiple folds within the edge structure. However, this increases manufacturing and material costs, and this It is not directed to addressing the first drawback mentioned above. A typical fully open lid of the type described above Examples can be found in the patent literature. This type of lid has an initial notch line. Requires a holding-type lever mechanism by which rupture is accomplished, and this lever mechanism , the opening disc can thereby be removed from the end panel. Note that it typically has a finger opening that can be opened. Such an opening device Often extremely difficult to manipulate, resulting in early breakage of the score line requires a considerable amount of force to be applied. Such operations are particularly important for women It is often difficult for children and children to perform.

The patent literature describes the use of spoons, levers, etc. to assist in opening the end panels. Limited examples of fully opening lids that utilize readily available household tools (e.g., U.S. Patent No. 4,003,495 and European Patent EP 0377788A). . In the first of the above examples, the removable termination panel includes a bayonet end cap. In order to break the tear line that defines the formed and removable panel A spoon is inserted through the end cap to pry the end panel upward. can be done. In this example, the tear line is formed by shearing the convex surface of the can end. r-coining) or swaging. It is stipulated as follows. To the best of the applicant's knowledge, this process is Not commercially adopted by. The steps involved in forming the tear line are: Consistently avoids lid rupture under the high pressure food cans are subjected to during processing of canned food products. It is considered that it is difficult to achieve consistently in practice, such as ensuring a strong opening force. It will be done.

The second of the examples above utilizes a weakened line in the form of a 7-character notch. Ru. The spoon is used to break the notch and lever the panel from the edge. It is described as engaging an outer groove formed within the end. Before the invention The experiments conducted showed that the spoon could be used as a lever, especially if the end was formed of steel. On the basis that it is too difficult to break the score line using Applicant was forced to abandon the use of textured panels. In any case, this structure , the same problem as mentioned above, namely that the opening force changes and due to the notch line. and end panel penetration problems. If the opening force is too high, use the above structure. structure, the tip of the spoon tends to slip out of the groove during an attempt to break the score line. You will find that you will be faced with certain problems. Again, the applicant knows To the extent this structure has not been used in commercial production.

Disclosure and purpose of the invention It is an object of the present invention to solve the above-mentioned problems by improving a fully open lid for container parts such as the ends of cans. The aim is to at least improve the problem.

Therefore, in the present invention, in the lid of a container member such as the end of a can, the lid is connected to a rim portion. a center panel at least substantially cut from the rim portion; A core panel is at least substantially completely separated from the rim portion and has a free circumference. a first bent portion forming a free inner edge; and a first bent portion forming a free inner edge; and a second bent portion in the opposite direction forming an edge extending substantially parallel to and spaced apart from the portion. , the free peripheral edge of the center panel is connected to the free inner edge and the edge parallel thereto; are placed one on top of the other between the central panel and the central panel during machining or processing. of the central panel is prevented from moving outward or inward of said rim. sealing means for sealing the free peripheral portion to the rim portion; and a sealing means assembled to the center panel. to enable deformation of the center panel, and overlap the center panel with the rim portion. and a means for detaching the lid from the mated state and removing it from the rim portion. provided.

the center panel being at least substantially completely cut away from the rim; The cut free edges of the center panel and the A rim portion can be formed. The free edge formed by cutting is substantially It is possible to control the cutting operation so that there are no burrs or sharp edges; This eliminates the second problem associated with score structures. The center panel is connected to the center panel. Since the leakage problem mentioned above is eliminated or the manufacturing Easily detected in the process.

Because the center panel overlaps the rim, this lid is suitable for canned food processing. During the cooking/sterilization process commonly used in the industry, canned food is It can withstand the pressure it is subjected to.

In a preferred form of the invention, which will be explained in detail below, the second bend in the opposite direction is the free inner edge of the central panel is disposed below the free inner edge; overlapping the lower side of the edge and overlapping the upper side of the parallel edge will be placed. The advantage of this construction is that the free edge of the parallel edges is below said free inner edge. Concealed to the side, the sealing means is applied to the concealed inner surface of the container member.

The practical purpose of ensuring that the center panel is sealed against the rim is In terms of materiality, the free periphery of said center panel is at least said parallel edges. and said free periphery so that a gap is provided to facilitate insertion of the sealing means. is located at

Most preferably, the lid connects the free peripheral edge to the free inner edge and the first and second edges. and the spaced apart and generally parallel edges formed by the bent portions of Constructed to be placed in the mind. In a preferred form of the invention, the central panel A portion projecting upward and downward is formed in the free peripheral portion, and the portion protrudes upwardly and downwardly. engaging the free inner edge and the spaced apart parallel edges to bring the free circumferential edge between them. Generally centered between the edges. A convenient way to obtain this structure The method is to form recesses in opposite directions in the free periphery of said central panel.

Preferably, the center panel is completely cut away from the rim portion of the container member; Fold the center panel around the neck, leaving a narrow neck in the center panel. You may need to bend the lid to open it. Additionally, during metal forming operations The center panel is connected to the rim by a plurality of narrow metal bridges that are easily broken. You can leave them together. The above metal bridge can be changed by lever-like operation using a tool. It is broken during shaping.

The means cooperating with said central panel comprises a ring pull device.

The device applies an opening force to the center panel. Manufacturing purpose and environment For the above purpose, said means are preferably formed in said central panel and said rim receiving a lever-opening tool that engages and levers the center panel. It is formed so that it can be deformed and released from the rim portion to be opened.

The lid means formed on said center panel is preferably any form of push-fit lid, the lid being a notched push-fit lid or a US Patent Publication No. Completely disclosed in Nos. 3759206, 3931909, and 4155480 It has a lid that can be cut off. This type of fully cut-off lid is preferred However, scored lids suffer from the first problem mentioned above. The problem is this This can be overcome by applying a sealant to the scored area.

If a cut-off push-fit lid is used, the lid should be placed on the underside of said center panel. a free edge that overlaps with the lid, and a non-stick part that forms a hinge part that bends when the push-in lid is opened. a separable lid tab having a separation portion and sealing the lid tab to the center panel; and sealing means. said push-fit lid tabs and/or openings; The edges of said central panel surrounding the or act to form the overlap by operations well known in the art. You can also let

When said lid is used on a container for a product that generates a vacuum within the container, The push-in lid is disclosed in co-pending International Application No. PCT/AU9010O10. No. 8 (U.S. Patent Application No. 768,739), Prevents the lid from being pushed to the open position by air pressure and ensures that the lid is opened Alternatively, it may be made clear that it has been tampered with.

The push-in lid member is preferably of the type used when opening the container. Configured to receive suitable tools. For containers for bed food, or For other food containers, the most convenient utensil is a spoon. and said lid The member is shaped to be most suitable for receiving the dish of the spoon. The above steps The poon levers the rim of the container to deform the center panel and Pull it out from its underside against the rim.

Furthermore, in a preferred form of the invention, an abutment or a recess received inwardly at said end is provided. part is formed. The corresponding contact portion or recess is opposite to the center of the lid or the hinge. located adjacent to the edge surrounding the opening. The recess is inserted into the opening. the tip of the spoon or other utensil being held against the rim. Preferably, the tool is prevented from dislodging from said opening when levered. properly formed. In this way, the spoon or the utensil can be reliably levered. act to remove the center panel from the rim.

Brief description of the drawing In order that the present invention may be more easily understood, preferred embodiments of the present invention are illustrated in the accompanying drawings. Described below with reference and in the accompanying drawings, FIG. 1 shows a diagram of a can embodying the invention. 2 is a plan view of the end of the can; FIG. 2 is a partial section of the end of the can taken along line 2-2 of FIG. 1; It is a front view, 3 is a partially enlarged sectional view of the lid forming body shown in FIG. 2, and FIG. 4 is a partially enlarged sectional view of the lid forming body shown in FIG. shows one way to open the end of a can, 5A-5G relate to one method for forming the end of a can embodying the present invention. 2 is a partial cross-sectional view of a modifiable lid structure embodying the present invention, illustrating the steps of It is.

BEST MODE FOR CARRYING OUT THE INVENTION Referring initially to FIGS. 1 and 2 of the drawings, a can end l embodying the present invention is shown in FIG. a rim part 2 with a side facing or free inner edge 3 and completely cut away from the rim part 2; and is arranged in an overlapping and lower horizontal relationship with the free edge 3 of the rim portion 2. A central panel 4 having a peripheral edge 5 is provided.

The free inner edge 3 of the inner rim part 2 is formed by a first fold F1 and spaced apart. The parallel second bent portions F are arranged horizontally below the first bent portion F1. forming a continuous groove portion G in which the free edge 5 of the central panel 4 is received. It terminates at an edge E located outside the edge 3 as shown in FIG.

In a particularly preferred form of the invention, as shown most clearly in Figure 1 of the drawings, , the free peripheral edge 5 of the center panel 4 includes a plurality of grooves spaced equidistantly around the circumference of the free edge 5. 6 and 7, forming opposing pairs of small recesses 6 and 7. Figure 2 of the drawing 3, the recesses 6 and 7 are located around the free circumference of the center panel 4. The edge 5 is positioned substantially centrally between the folds F1 and F. this The sealant 8 supplied to the overlapping area of the center panel 4 and the rim portion 2 is , to ensure that a favorable hermetic seal is formed (see Figure 3). It can enter the area between the peripheral edge 5 and at least the bend F.

Furthermore, it is ensured that a preferred volume of sealant 8 is retained in the overlapping area. In order to accommodate the When the can end l is fed by a suitable method, it is sealed toward the center of the center panel 4. Continuously downward to create a barrier or reservoir that prevents movement of material 8. Extending ribs 9 are formed.

The center panel 4 is provided with a strip of the panel 4 along line 11 to remove the hinge portion 12. It has a lower dish-shaped lid tab 10 that can be completely cut off from the bottom, and The lower part overlaps with the edge 15 surrounding the opening I6 created by opening the opening I6. an easily pushed-in opening lid C having a free edge 14 arranged in a lying relationship; is formed.

As best seen in the enlarged cross-sectional view of FIG. 3, the open lid C includes a lid tab lO. At the free edge 14, the tab lO is restrained from moving inside the panel 4, and the bracket/ or friction on the edge 11 of the edge 15 to provide an opening or prying mark. A means 17 is formed of spaced hooks that engage with each other. The sealing material 18 is , overlap of the edges 14 and 15 to airtightly seal the lid C of the center panel 4. supplied to the appropriate area.

The lid tab 10 is dish-shaped as shown, and the opening 16 has a shape as shown in FIG. It is shaped to receive the tip of the dish portion B of the spoon S. In the design of lid C The shape of the opening 16 is such that the lid is attached to the can and the food product packed in the can is cooked or not. The can end 1 is subjected to the internal pressure that occurs when it is processed for sterilization and/or sterilization. When configured to mitigate points of vulnerability.

As fully shown in Figure 4 of the drawings, during the opening operation, the dish portion B of the spoon S is dish-shaped. The hook passes through the entire means 17 to open the tab IO and remove the sealing material. 18 and bend the tab 10 at the hinge 12.

The work using the lever action necessary to remove the center panel 4 from the rim part 2 In the meantime, the dish part B of the spoon S or other similar utensil is maintained in the opening 16. In order to ensure that the center panel 4 is centered on the lid C opposite the hinge 12, An inwardly facing bracket formed in the panel 4, adjacent to the edge 11 surrounding the opening 16 of the lid C. It is provided with an abutment portion or recess 19 for contact. As shown in FIG. 4, the recess 19 is It has a shape that provides the right rear wall 20, and has a size that can be received at the tip of the dish part B. 4 of the drawings, the vertical rear wall 20 is located at the end of the panel 4, as clearly shown in Figure 4 of the drawings. is deformed, and the panel 4 is inserted from the free edge 5 horizontally disposed below the free edge 3 of the rim part 2. When levered on the rim part 2 to remove the free edge 5 , forming a suitable anchorage point for the tip of the dish B inserted into the opening 16. recess The fixation point provided by 19 is such that the spoon S is levered on the rim part This prevents the dish portion B of the spoon S from being retracted from the opening 10 when It works as if it were moving.

Without the recess 19, the spoon S makes it easy to remove the panel 4 from the rim portion 2. on the underside of the center panel 4 without properly forming the center panel 4 so as to It is understood that there is a tendency to slide against the surface. A similar trend is seen in previous U.S. Patent No. 4 Present in the case of the structure described in No. 003495, in which the spoon plate is The rim of the lid 28 creates an extremely narrow frictional contact point between the dish and the panel 16. It engages a portion 32 extending around the enclosure. In this embodiment, the recess 19 is located in the center panel. 4 is preferably configured to be removable from the rim portion 2. In order to suppress relative sliding between the spoon S and the center panel 4, operate.

As mentioned above, both the center panel 4 and the lid tab lO are described in US Pat. No. 4,102,30 No. 4, U.S. Pat. No. 4,151,314, U.S. Pat. No. 4,842,469 A suitable plastisol provided by any suitable method known in the art, such as by a type of device. The rim portion 2 and the edges are sealed by means of a sealant 12 and a sealant 18 such as a sealant. 15, hermetically sealed.

The lids described above may be fabricated by suitable metalworking operations well known to those skilled in the art, such as in FIGS. 58 to 5E. is formed as shown in . Figure 5A shows a typical can end shell; The metalworking operations necessary to form the lid described above are performed on the end shell. figure 5B, such that the end shell has a substantially vertically extending rim wall. modified, and a rib 9 retaining the sealant is formed along the contour of the central panel; This allows expansion due to internal pressure during processing of the canned food. Ma In addition, it is preferable to form recesses 6 and 7 in the processed end shell; are changeable so that they can be changed in subsequent operations prior to the next step. The vine is made.

The next step is shown in FIG. 5C, which involves removing the central panel 4 from the rim section 2. consists of leaving. The left side of Figure 50 shows the removal during the downward stroke of the punching operation. 50, whereas the right side of Figure 50 shows the position of the It shows the position in the journey. As mentioned above, the removal operation inherently This is done to create a smooth or non-sharp edge, thereby creating a notch. Questions about sharp or jagged edges, such as those formed when cutting I try to avoid the issue.

As mentioned above, the side wall of the rim 2, which extends substantially vertically, has an inwardly directed bend. A bent portion is formed, and this bent portion constitutes the starting portion of the folded portion F1. vent part F, is already partially removed by vents in the panel at the bottom of the vertical side walls. It is formed as follows. If desired, the side walls of the end shell may be The beginning part of the first vent part F may be formed in advance. The rolling operation is carried out during the shaping of the rolled edge of edge 2, for example as part of the starting tailwheel rolling operation. Or done immediately after molding. This pre-forming operation is performed to form the vent portion described above. to assist.

In FIG. 5D, the dimensions of the center panel are such that the free edge 5 and the remainder of the center panel 4 are The bending portion F1 is increased by decreasing the angle between the bent portions. It is further formed by crushing the side walls of the surrounding rim 2.

In FIG. 5E, the double bent part F+SFs holds the free peripheral part 5. Flattened to its final shape. In FIG. 5F, the lid tab lO is shown along line 11. cut out and latching means 17 are formed on the free edge 16 of the tab lO, and A recess 19 is formed which engages the spoon. In the final machining operation in Figure 5G, the automatic The free edge 14 overlaps the free edge 15 and is located below the free edge 15. The tab 10 is arranged such that the latching means 17 frictionally engages the edge of the aperture 11. Coining is processed. A sealant is then applied to the ends at 8.18 and Any necessary repair lacquer is applied to the exposed working area of the end l.

In the embodiment shown in FIGS. 1 to 5, the base of the rim 2 is located below the free edge 3. However, in a modified example consisting of vent portions F, , F, as shown in FIG. The toe portions F, , F, may be arranged above the free edge 3. like this In this arrangement, the illustrated seal protects the removed end of the rim portion 2 from corrosion. , and even if the free edge is exposed, its unsharp shape may cause injury to the user. Any danger of doing so is prevented.

Furthermore, the central panel 4 is further arranged such that the panel projects upwardly in its relevant state. It may also be formed into a dome shape. In this way, loss of vacuum or Or, more precisely, the leakage of air into the can can be visually detected.

In the embodiment described above, the sealant 511m is applied to the outside after it is fully formed. However, by applying the sealant to the rim 2, the free tightening portion 5 of the center panel 4 is covered with the sealant. to be gripped between coated surfaces, thereby forming a hermetic seal. 711 with a sealant applied as described above or with a T6 sole. It will be understood that seven rules can be used for ninety-nine seconds.

In the embodiment described above, the lid 10 is dish-shaped, but alternatively the lid 10 can be shaped like a free edge 14. The formation of the latch 17 is essentially flat with an upright vent around the periphery. so as to assist and provide an engagement point for the spoon S during the opening movement. Good too.

１　Xノ A, 6 6-ゝ　′ 16 [ ~ 6,2 20 International Search Report rLLI-FIIIm+appli+□14aPCrZAM7 F-PCTITSA/210Leeyptmaajmelera-+211+I oly　If21mt□International Search Report　-e-Ipp-〇Na Femtcrnskr210 l--11□-Wj+ily 11-International search Report □1"-1゜ ■Go/AUηI month 7 Continuation of front page (81) Designated countries EP (AT, BE, CH, DE.

DK, ES, PR, GB, GR, IT, LU, MC, NL, SE), 0A (BF , BJ, CF, CG, CI, CM, GA, GN, ML, MR, SN, TD, TG. ), AT, AU, BB, BG, BR, CA, CH, C3, DE.

DK, ES, FI, GB, HU, JP, KP, KR, LK, LU , MG, MN, MW, NL, NO, PL, RO, RU, SD, S E, U.S.

Claims (21)

[Claims] 1. In a lid for a container member such as an end of a can, the lid includes a rim portion and a small distance from the lid rim portion. a center panel that is at least substantially removable; the center panel is at least substantially completely separated from the rim portion; and with a free periphery; The rim portion includes a first bent portion forming a free inner edge portion, and a first bent portion forming a free inner edge portion, and a first bent portion forming a free inner edge portion. a second bent portion in an opposite direction forming a spaced apart extending edge; The free peripheral edge of the center panel is connected to the free inner edge and the edge parallel thereto. The central panel is placed on top of each other during processing or processing. is prevented from moving to the outside or inside of the rim portion, sealing means for sealing the free peripheral edge of the center panel against the rim; incorporated into said central panel to enable deformation of said central panel; A hand for detaching from the overlapping state with the rim portion and removing it from the rim portion. A lid comprising a step. 2. a second bend in the opposite direction is located below the free inner edge, and the center panel The free peripheral edge of is disposed overlappingly below the free inner edge, and the free peripheral edge of 2. A lid according to claim 1, wherein the lid is arranged overlappingly above the parallel edges. 3. The overlapping portion of the rim portion and the free peripheral edge portion is formed by the front parallel edge portion and the overlapping portion of the free peripheral edge portion. said free periphery so that a gap is provided between it to facilitate insertion of the sealing means. The lid according to claim 1 or 2, having a structure for positioning the free peripheral edge. 4. The overlapping portion of the rim portion and the free peripheral edge portion overlaps with the free inner edge portion. a structure for positioning the free peripheral edge substantially centrally between the parallel edges; The lid according to claim 3. 5. The positioning of the free periphery includes the parallel edges and the free periphery. and a protrusion extending from at least one of said free inner edges. The lid according to claim 3 or 4. 6. comprising a plurality of sets of protrusions extending from both sides of the free peripheral portion, the plurality of sets of protrusions; are spaced apart about the circumference of the free periphery so that the free periphery is 6. The lid of claim 5, wherein the lid is positioned substantially centrally between the curved portions. 7. incorporated into the center panel, the overlapping portion of the rim portion and the free peripheral portion; Any of claims 1 to 6, further comprising means for retaining a sealing means in the area of the folded portion. The lid described in item 1. 8. Said means for retaining the sealing means is arranged adjacent to and inside said free periphery. a downwardly extending peripheral rib formed in the center panel, the rib extending from the parallel The lid according to claim 7, wherein the lid extends to a position below the edge. 9. Means incorporated into said center panel is arranged adjacent said rim portion to said center panel. a lid portion formed in the shape of the lid portion, the lid portion being configured to receive and be opened by the opening tool; and the opening tool leverably engages the rim portion to deform the center panel. Any one of claims 1 to 8, wherein the center panel is easily detached from the rim portion. The lid described in item 1. 10. The lid portion of the center panel receives the opening tool on the lower side of the center panel. 9. The lid according to claim 8, comprising a push-in lid having a shape. 11. The push-in lid has a free edge that overlaps the underside of the center panel and a push-in lid. A separable lid tab with a non-separable portion that forms a hinge that bends when the lid is opened. and sealing means for sealing the lid tab to the center panel. The lid described in 0. 12. formed on the free edge of the lid tab and frictionally engages the center panel to secure the lid. Claim 11 further comprising latching means for preventing unexpected opening movement of the lid tab. Lid as described in. 13. The push-in lid has a shape that receives the dish portion of the spoon, and the lid spoon The center panel is deformed by levering the rim portion and removed from the rim portion. 13. The lid according to claim 10, wherein the lid is detachable. 14. an inwardly facing abutment portion formed on the center panel adjacent to the push-in lid; Further, the contact portion is shaped and arranged to act as an engagement point for the saucer portion of the spoon. to prevent the spoon from disengaging from the center panel during the lever action. 14. The lid according to claim 13, which prevents. 15. the abutting portion is formed on the center panel directly adjacent to the push-in lid; Consisting of an inward facing recess, the lid recess has a substantially vertical rear wall, and is similar to the dish of a spoon. The tip of the spoon engages with the rear wall to prevent the spoon from detaching from the push-in lid. The lid according to claim 14. 16. In a method of forming a lid on a container member such as an end of a can, the lid includes a rim portion and a lid. , a center panel configured to be at least substantially removed from the rim portion; the method further comprising the step of substantially cutting the center panel from the rim portion; and a first fold in said rim portion to form a free inner edge; and a free end of said inner ring. a second fold in the opposite direction to form an edge extending generally parallel to and spaced from the forming an eye; and aligning a free peripheral edge of said central panel with said free inner edge; The center panel is widened in order to be placed overlappingly between the parallel edges. step and the area of the overlap to seal the free periphery to the rim; applying a sealant to the area. 17. Further, a gap is maintained between the free peripheral edge and at least the parallel edge. claim 16, further comprising the step of: facilitating insertion of a sealing means into the gap; The method described in. 18. extending from at least one side of the free peripheral edge to form the gap; 18. The method of claim 17, further comprising the step of forming circumferentially spaced abutments. Method. 19. The free peripheral edge is arranged approximately at the center of the free inner edge and the parallel edge. In order to 18. The method of claim 17, comprising: 20. Further, a step that is pressed into the center panel adjacent to the rim portion and forms a lid is provided. 20. A method according to any one of claims 16 to 19, comprising a step. 21. Further, a step adjacent to the push-in lid forms an inwardly directed abutment. including The spoon inserted through the push-in lid is separated from the rim portion and inserted into the center. When the core panel is deformed and removed from the rim portion, the abutting portion Claim 20, wherein the ring is arranged and formed so as to be engaged with the tip of the dish part of the horn. How to put it on.