KR100712313B1 - Can end with improved openability and drinkability - Google Patents

Abstract

According to the present invention, a predetermined area of the upper surface is divided into a preliminary preliminary opening by the score, and the main body and the rivet are joined by the main body, and one end acts as a holding part around the rivet and the other end presses the preliminary preliminary opening. A can lid comprising a tab that acts as a pressing portion, wherein the center of the opening preliminary portion is provided with a central score having a center extending in the same direction as the extending direction of the tab, and at one end of the rivet side of the central score. A first boundary score is formed that extends laterally symmetrically from the score, and the other end opposite to the rivet of the central score forms a drinking extension portion that extends laterally symmetrically from the central score and at both ends of the first boundary score. Forming an extension that extends downward to near each end of the Thereby, a second boundary score for dividing the opening preliminary part from the upper surface of the body together with the first boundary score is provided, wherein at least an area between the first boundary score and the second boundary score serves as a stay portion. It discloses a can lid which greatly improves the openability and drinkability.

Can lid, score, tab, easy opening

Description

Can lid with improved openability and drinkability {CAN END WITH IMPROVED OPENABILITY AND DRINKABILITY}

1A is a perspective view of a metal can according to the prior art.

1B is a plan view of the can lid shown in FIG. 1.

1C is a cross-sectional view of the can lid in the opened state, taken along the line A-A of FIG.

2 is a plan view of a can lid according to an embodiment of the present invention.

Figure 3a is a view showing a process of opening the can lid shown in FIG.

FIG. 3B is a cross-sectional view of the can lid in the opened state, taken along line B-B of FIG. 3A (c).

4-8 are top views of each can lid according to other embodiments of the invention.

** Explanation of symbols for main parts of drawings **

1: can lid 10: body

20: concave bottom portion 21: gap projection

30: Preliminary Government 30a, 30b: Fragment of Preliminary Government

31: central score 31a, 31b: central score end (connection node)

32: first boundary score 32a: end of first boundary score

32d: Extension Extension 33: Second Boundary Score

33a: end of second boundary score

33c: drinking extension 33d, 33d´: extension

34: machining buffer score 35: Stay part

37: embossed irregularities 50: tap

51: grip portion 52: pressurizing portion

70: rivet

The present invention relates to a can lid provided with a tab for score breaking, and more particularly, to a can lid having improved openability and drinkability due to a design change to the score in a preliminary opening.

FIG. 1A is a perspective view of a conventional metal can, and FIG. 1B is a plan view of a can lid having a score break tab of FIG. 1. As a can lid 100 made of aluminum or steel, which has been developed for the purpose of easy opening, a predetermined portion of the upper surface of the can lid is opened by a generally continuous continuous score (gold). Opening means such as a so-called stay-on-tab 500 is a means for pressing the opening preliminary opening portion 300 from the upward direction by dividing the predetermined portion 300 into the lid body 100. The so-called push-open type can lid 100 of the form in which the rivet 700 is fastened adjacent to the opening preliminary section 300 on the upper surface is known. The periphery of the can lid 100 is mechanically coupled to the end of the can body 200 is coupled.

On the other hand, since the conventional can is composed of a pressure-resistant can and a pressure-reduced can, in the can-open type can lid used for such a can, the contents of the can lid are increased due to the water hammer phenomenon that the contents rise from the inside of the can and push the can lid. In order to prevent the constituent scores from being accidentally broken and suddenly opened, it is common to require a score of more than a certain thickness to stably withstand pressure changes in and out of the can. Therefore, a certain amount of external force is required to physically break the score for the purpose of opening the can, and this external force depends on the force transmitted by the pressing portion of the tab.

In order to open the conventional can lid 100, the other end of the tab 500 by the lever principle as the one end of the tab 500 which functions as the holding part 510 is lifted upward. The pressing unit 520 pressurizes the center of the opening preliminary unit 300 and at the same time, the main body portion to which the rivet 700 is fastened is lifted relatively, so that breakage is initiated in the score 310 near the rivet 700. Propagates along the remaining score 310 in the circumferential direction. When the grip portion 510 of the tab 500 is sufficiently lifted, the opening preliminary section 300 is further lowered into the can, and the fracture propagated clockwise along the annular score 310 is scored 300. After reaching the end), it is stopped by the stay unit 350, which is a score unprocessed area, and the opening is completed. The lowered opening preliminary part 300 is inclined obliquely downward to the stay part 350 and is positioned inside the can.

However, in the can lid 100 of the related art, since the score 310 has a generally annular shape around the opening preliminary stage 300, the press portion 520 of the tab 500 is located at the center of the opening preliminary stage. Part of the transmitted external force is dispersed to cause breakage at the beginning of the SCOA 300 or more external force is required for the delivery of the break, which makes it difficult for the elderly, child or patient who has no strength to open, and also excessive force is required. When applied, the tab 500 member or the connection rivet 700 is damaged, so there is a problem that opening itself is impossible at all unless a separate tool such as a cutter is used.

Furthermore, as shown in FIG. 1C, after opening, the opening preliminary unit 300 is biased toward one side of the opening and is kept inclined downward into the can, thereby preventing the flow of contents in the process of drinking or withdrawing the contents of the can. There was also this accidental pouring problem.

An object of the present invention devised to solve the problems of the prior art as described above, a can lid that can be easily opened with a small force and can be stably drawn out without opening the contents of the can after opening. To provide.

In order to achieve the above object, the present invention, the predetermined area of the upper surface is divided into preliminary opening by the core, combined by the main body and the rivets, one end of the rivets and acts as a gripping portion and the other end opposite The can lid including a tab that acts as a pressing unit for pressing the opening preliminary, wherein the center of the opening prepreg is provided with a central score extending in the same direction as the extension direction of the tab, At one end of the rivet side, there is provided a first boundary score extending continuously laterally from the central score, and at the other end opposite to the rivet of the central score, a drinking extension part continuously extending laterally from the central score is formed and both ends thereof. Downward to near each end of the first boundary score. By forming an extended extension portion, a second boundary score for dividing the opening preliminary part from the upper surface of the body together with the first boundary score is provided, and at least an area between the first boundary score and the second boundary score stays. Provided is a can lid, which functions as a negative.

The central score is preferably formed in a straight shape so that the fracture can easily proceed.

The extension part of the second boundary score may be formed in a straight line shape, in which case, after the opening operation is completed, the opening preliminary part is kept in a state of being bent into the can without separating from the upper surface of the can lid body in the expansion extension part. Therefore, it can serve to guide the contents extracted out of the can.

Optionally, the extension part of the second boundary score can be formed in a curved shape. In this case, after the opening operation is completed, the opening preliminary part can be completely separated from the upper surface of the can lid body in the expansion extension part to expand the size of the opening. Can be.

The length of the drinking extension of the second boundary score can be longer than the horizontal extension length of the first boundary score, in which case the amount of the contents is withdrawn after opening is completed.

Optionally, the withdrawal amount of the contents is reduced when the length of the drinking extension of the second boundary score is shorter than the transverse extension length of the first boundary score.

By forming the stay portion between the first boundary score and the second boundary score in the middle region of the opening preliminary opening, it is possible to reduce the force required for the opening operation and to open the package quickly.

In the opening preliminary part, it is preferable to form an embossed concave-convex part adjacent to the point where the pressing part of the tab is in contact without interrupting the breaking path of the central score. The opening pressure delivered from the press section of the tab can be effectively delivered.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

2 is a plan view of a can lid 1 according to the invention. The can lid 1 generally consists of a plate-shaped body 10 and a tab 50 fixed to the center portion of the body 10. Tab 50 is shown in dashed lines in the figure. Hereinafter, the extending direction of the tab 50 will be described as the longitudinal direction or the longitudinal direction, and the direction perpendicular thereto will be described as the horizontal direction or the horizontal direction.

The predetermined area | region of the main body 10 is divided and divided as the opening preliminary | preparation part 30 from the other area | region of the upper surface of a can lid by the score 31,32,33. The concave bottom portion 20 which is engraved in a long oval shape around the area where the opening preliminary section 30 and the tab 50 are installed accommodates the tab 50 and at the same time gives rigidity to the main body 10 in the opening process. Done.

The tab 50 is fixed to the main body 10 by the rivet 70, one end of the tab 50 on the basis of the rivet 70 in the opening process as the grip portion 51 to be held by the user finger, the other end Are each functioning as a pressing unit 52 for pressing the central portion of the opening preliminary section 30. In this case, the end portion of the pressing portion 52 extends to press a point of approximately 2/5 to 3/5 based on the longitudinal length of the opening preliminary opening portion 30 from the rivet 70, which is required for opening. It is advantageous because the external force can be made small. On the upper surface of the concave bottom portion 20 in which the grip portion 51 of the tab 50 is located, a plurality of gap protrusions 21 are formed to support the grip portion 51 to form a space.

One of the characteristic features of the present invention is to optimize the processing of the scores 31, 32, 33 provided in the opening preliminary section 30 so that the loss of external force required for opening can be minimized. These scores 31, 32, and 33 divide the opening preliminary section 30 from other areas of the main body 10, and as described below, it should be scheduled to be broken or bent in the opening process, so that it is press-molded using a mold or the like. Being a kind of indentation.

First, a central score 31 extending in the longitudinal direction is provided at the center of the opening preliminary section 30. The central score 31 has one end 31a starting near the rivet 70 and the other end 31b adjacent to the concave bottom 20. The shape of the central score 31 is preferably formed in a straight shape as in the embodiment of FIG. 2 so that the fracture can be easily developed during the opening process.

At one end 31a of the rivet 70 side of the central score 31, a first boundary score 32 is formed which extends laterally laterally and symmetrically from the central score 31. The first boundary score 32 constitutes a part of the periphery of the preliminary opening 30, and in the process of opening, as the upper surface of the main body 10 around the rivet 70 is lifted, the first boundary score 32 acts as a site where the opening is started. do.

Preferably, the first boundary score 32 is formed in a gentle curved shape around the rivet 70 near the node 31a that intersects with the central score 31. Accordingly, when the upper surface of the main body of the periphery of the rivet 70 is lifted during the opening process, the tensile force necessary for breaking is effectively transmitted to the first boundary score 32 so that the breaking can be easily started.

In this embodiment, the end 32a of the first boundary score 32 extends substantially horizontally and terminates, and at each end 32a, the processing buffer score 34 to be described later is inside the first boundary score 32. Along the side is formed extending.

On the other hand, the other end 31b of the central score 31 opposite to the rivet 70 extends symmetrically in succession from the center score 31 and both ends 33a of the drinking extension 33a are formed in the first end 31b. A second boundary score 33 is formed, which is formed of an extension portion 33d extending downwardly to the vicinity of each end 32a of the boundary score 32, and the second boundary score 33 is described above. Together with the first boundary score 32, the opening preliminary section 30 is divided into other regions on the upper surface of the main body 10 to be partitioned.

Between the end 32a of the first boundary score 32 and the end 33a, 33a of the second boundary score 33, a stay 35 is provided as a score unprocessed area. The stay part 35 prevents the opening preliminary part 30 separated from the upper surface of the can lid 1 from being dropped into the can after the opening to the can lid 1 is completed.

Like the concave bottom portion 20, the drinking extension portion 33c extends in the transverse direction in a smooth streamline shape, substantially coinciding with the shape of the periphery of the annular can lid body 10, the center of which is the center score ( And intersect with node 31b of 31. In the embodiment of FIG. 2, the lateral extension lengths of the drinking extension portion 33c of the second boundary score 33 and the first boundary score 32 are substantially the same.

In the present embodiment, the extension portion 33d is formed in a straight shape and has a shape rapidly extending downward from the drinking extension portion 33c. In the case of the linear extension part 33d, an angle θ formed between the extension direction D _33c of the drinking extension part 33c and the extension direction D _33d of the extension extension part becomes large during the breaking process. The progression of the fracture traveling along the extending direction D _33c of the extension part 33c is limited. Therefore, in the straight extension part 33d, the extension part 33d is extended even if the holding part 51 of the tab 50 is sufficiently lifted in the opening process so that the pressing part 52 is lowered to the inside of the can as much as possible. It remains bent without breaking. In this embodiment, since the lateral extension lengths of the drinking extension portion 33c and the first boundary score 32 of the second boundary score 33 are substantially the same, the linear central score 31 and the first extension score are therefore the same. The extension part 33d of the two boundary scores 33 is also substantially parallel.

On the other hand, the inner side of the first boundary score 32, the left and right sides of the central score 31 and the inside of the second boundary score 33 is provided with a machining buffer score 34 formed in parallel with them. The machining buffer score 34 extends along the first boundary score 32, the central score 31 and the second boundary score 33, starting from the end 32 a of the first boundary score 32. It is provided in the form of terminating at the end 33a of the two boundary score 32. This machining buffered score 34 absorbs the amount of movement of material in the can lid 1 main body 10 during the grooving of the first boundary score 32, the central score 31 and the second boundary score 33. This is to minimize the sudden temper change. In addition, since the processing buffer buffer score 34 does not plan to break or bend during opening, the processing depth is shallower than that of the first boundary score 32, the central score 31, and the second boundary score 33. It is preferable.

Next, the opening process of the can lid 1 comprised as mentioned above with reference to FIG. 3A is demonstrated. In order to open the can, when the holding part 51 of the tab 50 is lifted so that the pressing part 52 descends, the pressing part 52 presses the center of the opening preliminary part 30 and simultaneously. A portion of the upper surface of the can lid body 10 adjacent to the rivet 70 is raised to apply a tensile force generally perpendicular to the first boundary score 32. When the tensile force exceeds a predetermined limit, breakage is initiated in the vicinity of the connecting node 31a of the first boundary score 32 and the central score 31 (see Fig. 3 (a)). If the pressing portion 52 is further lowered as the holding portion 51 is raised, the breaking is developed along the central score 31, and then the node 31b opposite the rivet 70 of the central score 31 is opened. After that, it progresses laterally along the drinking extension 33c (see FIG. 3 (b)). Accordingly, the opening preliminary section 30 is separated into two fragments 33a and 33b symmetrically with respect to the central score 31. In the last step of the opening process, the tab 50 is aligned almost perpendicular to the top surface of the can lid 1, whereby the straight extension 33d is bent and referred to the central score 31. The two fragments 33a and 33b of the opening preliminary section 30 separated by FIG. 3 are pushed into the can by the side end of the pressing portion 52 of the tab 50 (see FIG. 3A (c)). The two fragments 33a and 33b of the opening preliminary opening 30 are thus acted as sidewalls in the process of drinking or withdrawing the contents to guide the contents to flow smoothly to the center of the opening (see FIG. 3B). .

As mentioned above, although one preferred embodiment of the present invention has been described, the scope of the present invention is not limited to the above embodiment, and various modifications are possible without departing from the nature and characteristic configuration of the present invention.

For example, the central score 31 may be configured in a straight line shape, or may be configured in a curved shape as shown in FIG. 4 in consideration of an aesthetic appearance before and after breaking of the opening preliminary section 30. . In this case, however, it is preferable that the radius of curvature of the curve is appropriately adjusted in a range that does not prevent the development of fracture.

In addition, the shape of the extension part 33d of the second boundary score 33 can be configured in a curved shape instead of the linear shape in FIG. 2. In the case of forming the extension part 33d 'in a curved shape as in the embodiment of Fig. 5, the extension direction D _33c of the drinking extension part 33c and the extension direction D of the extension extension part 33d' are shown. _{As the} angle θ _′ formed by _{33d ′} decreases, the fracture that has progressed along the extending direction D _33c of the drinking extension _33c is completely made up to the extended extension 33d ′, and then the first boundary. It stops at the stay portion 35 provided between the score 32 and the second boundary score 33. When the opening is completed, the first boundary score 32 except for the vicinity of the stay 35 is completely broken in the second boundary score 33, and the two fragments 33a and 33b of the separated opening preliminary section 30 are separated. ) Is supported by the stay unit 35 while being biased toward the rivet 70 side and is bent into the can. As a result, the flow rate of the fluid drawn out through the opening is not restricted, and thus the extraction speed of the contents can be increased.

Further, in the present invention, the transverse extension length of the drinking extension portion 33c of the first boundary score 32 and / or the second boundary score 33 may be appropriately adjusted according to the withdrawal speed of the desired contents. That is, when the extension length of the drinking extension 33c is larger than the horizontal extension length of the first boundary score 32 as shown in FIG. 6A, the withdrawal amount and withdrawal speed of the contents after opening may be increased. If it is reversed as shown in 6b, the amount of the withdrawal of the contents may be reduced after opening so that the elderly, children, patients, etc. may be suitable for drinking.

In addition, the stay part 35 may be formed in the middle region of the opening preliminary section 30. In this case, as shown in FIG. 7, the first boundary score 32 may be formed in addition to the horizontal extension part 32c. An extension part 32d of the first boundary score 32 extending upwardly toward the ends 33a and 33a of the second boundary score 33 may be further provided. In the embodiment of FIG. 2, the time taken for opening is relatively long depending entirely on the time taken for the progress of the break in the second boundary score 33, while the second boundary score is as shown in the embodiment of FIG. 7. By relatively shortening the length of the extension part 33d of (33), the time required for the progress of the breakage is also shortened. In this case, the shape of the extended extension portion 32d of the first boundary score 32 is the same as the shape and the presence or failure of the extended extension portion 33d of the second boundary score 33 in FIG. 2. Can be controlled.

On the other hand, in order to easily break or deformation in the score (31, 32, 33) in the opening process, the external force transmitted through the pressing portion 52 of the tab 50 is not lost, the score (31, 32, 33) Must be effectively communicated with). In this regard, the opening preliminary section 30 includes two pieces 33a, 33b of the opening preliminary section 30 around the pressing point so that deformation can be prevented by resisting the vertical force from the pressing section 52. It is preferable to provide the furnace rigid reinforcement embossing uneven part 37 (refer FIG. 8). In this case, the embossed convex portion 37 is formed so as not to interfere with the break path of the central score 31.

Therefore, the above-described embodiments in the present specification are exemplary and not intended to have a limiting meaning, and the scope of the present invention includes the matters described in the appended claims and all modifications that may be understood therefrom. It must be understood.

Can lid according to the present invention can be easily opened with a small force and after opening the contents inside the can can be stably drawn without interrupting the flow can provide convenience in use.

Claims (8)

A predetermined area of the upper surface is divided into the opening preliminary section by the score, and the main body and the rivet are joined by the main body and the rivet, and one end acts as a gripping portion and the other end is a pressing section for pressing the opening preliminary section. A can lid comprising a operative tab, The center of the opening preliminary part is provided with a central score whose center extends in the same direction as the extending direction of the tab, and at one end of the rivet side of the central score, a first boundary score is formed which extends laterally symmetrically from the central score. And at the other end opposite to the rivet of the central score, a drinking extension part continuously extending from the central score to the left and right sides is formed, and at the same time, both ends thereof extend downwardly to the vicinity of each end of the first boundary score. Thereby, a second boundary score for dividing the opening preliminary part from the upper surface of the body together with the first boundary score is provided. At least a region between the first and second boundary scores acts as a stay. The can lid of claim 1, wherein the central score is formed in a straight line shape. The can lid of claim 1 wherein the extension of said second boundary score is straight. The can lid of claim 1 wherein the extension of said second boundary score is curved. The can lid of claim 1 wherein the length of the drinking extension of the second boundary score is greater than the transverse extension length of the first boundary score. The can lid of claim 1 wherein the length of the drinking extension of the second boundary score is shorter than the transverse extension length of the first boundary score. The can lid according to claim 1, wherein a stay portion between the first boundary score and the second boundary score is formed in an intermediate region of the opening preliminary stage. The can lid of claim 1, wherein the opening preliminary part is formed with an embossed concave-convex portion adjacent to a point where the pressing portion of the tab is in contact with each other without disturbing the breaking path of the central score.

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