JPH0245161Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to an easy-open container that is opened by breaking the score line.

(Prior Art) Conventionally, in this type of container, a score line is provided on the peripheral wall part which is connected to the opening of the container body in a hanging state along the entire periphery of the panel part, and a tab to break this score line is provided. It is known to have a sealed metal container lid that is connected to the lower edge of the peripheral wall.

However, with this configuration, there is a problem in that a thick container lid must be used to prevent the score line of the container lid from being accidentally broken due to vibrations during transportation.

Therefore, instead of a thick container lid, the container lid is made of a thin metal foil and a thermoplastic resin layer coated on the outer surface of the metal foil, and the inner surface of the peripheral wall of the container lid is used as the opening of the container body. It is conceivable to fit and adhere the score line to the thermoplastic resin layer of the peripheral wall of the bonded area to prevent the score line from being accidentally broken.

However, when using such a configuration, the inner surface of the peripheral wall where the score line is provided is also glued to the opening of the container body, so when the tab is pulled to open the container, the peripheral wall of the container lid will be attached to the score line. As a result, only the lower part of the peripheral wall extending from the score line to the lower edge of the tab can be separated from the container body, but the upper part of the peripheral wall extending from above the score line to the panel can be separated from the container body. Since it remains attached to the container body without being pulled off, other means are required to completely open the container lid.

(Problems to be Solved by the Invention) The present invention solves these conventional problems, provides stable unsealability without directly providing a score line on the metal foil of the container lid that seals the opening of the container body, and To provide an easy-open container that can be opened without leaving a container lid on the container body.

(Means for Solving the Problems) The present invention was made to solve the above problems, and includes an opening tab on the lower edge of the peripheral wall that hangs down and is connected to the entire periphery of the panel. , in a container in which the peripheral wall of the container lid, which is connected to one side edge of the tab and is provided with a score line along the entire circumference of the peripheral wall, is fitted and adhered to the container body, the container lid is made of metal foil and A thermoplastic resin layer is formed by coating the outer surface of the metal foil, and the score line is formed by removing only the thermoplastic resin layer of the peripheral wall at the upper edge position of the bonded area between the peripheral wall of the container lid and the container body. It is characterized by having the following.

(Example) The present invention will be explained below with reference to the drawings.

1 and 2 show an example of the implementation of the present invention.

In the drawings, reference numeral 1 indicates a container lid, and the container lid 1 is made of a metal foil 2 made of stain-free steel, aluminum, etc., as shown in the second diagram, and the outer surface of the metal foil 2 is coated with a material such as polypropylene, polyethylene, etc. The panel portion 4 of the container lid 1 is coated with a thermoplastic resin layer 3, and a cylindrical peripheral wall portion 5 is formed in a hanging shape on the entire periphery of the panel portion 4 of the container lid 1, and as shown in FIG. An opening tab 6 is formed integrally with the peripheral wall 5 so as to be continuous with the lower end. The peripheral wall 5 of the container lid 1 has a tab 6 connected to the lower edge of the peripheral wall 5 as shown in FIG.
A diagonal score line 7a extending diagonally from one side edge 6a, and a peripheral wall portion 5 connected to the diagonal score line 7a.
A horizontal score line 7b surrounding the peripheral wall portion 5 is provided at a position below the upper edge of the horizontal score line 7b. Both score lines 7a, 7b
As shown in FIG. 2, the score line 7 was formed by removing only the thermoplastic resin layer 3 coated on the outer surface of the metal foil 2 by, for example, bringing a heated blade into contact with the resin layer 3.

Incidentally, in forming the score line 7, only a part of the resin layer 3 may be excluded.

In the drawings, reference numeral 8 denotes a heat-adhesive resin coating made of polyolefin, polyamide, polyester, etc., which is applied to the inner surface of the container lid 1.

Further, 10 indicates a container body, and the container body 10 is the first
As shown in Figures 1 and 2, can coating is applied to the inner and outer surfaces of a cylindrical body 11 of a so-called two-piece can made of aluminum or tinplate, or a so-called three-piece can made of tinplate or stain-free steel, which has an opening 13. A film 12 is applied thereto.

In the illustrated embodiment, the opening 13 of the container body 10 is provided with a neck-in portion 15 having a smaller diameter than the body 11 of the container body 10, and the opening 13 is made of a thermoadhesive resin material and has an approximately ∩-shaped cross section. Part 13
A reinforcing member 14 of the cylindrical body covering the entire circumference is coated and bonded, and the inner surface 17 of the peripheral wall portion 5 of the container lid 1 having the above structure is attached to the outer surface 16 side of the upper opening 13 of the container body 10 via the reinforcing member 14. The reinforcing member 14 and the thermoadhesive resin coating 8 applied to the inner surface of the container lid 1 from the inner surface of the peripheral wall portion 5 corresponding to the position where the score line 7 is provided to the lower edge. were adhesively fixed to form an adhesive portion 18 between the peripheral wall portion 5 of the container lid 1 and the container body 10.

As mentioned above, in the container of the present invention, the score line 7 is connected to the adhesive part 1 between the peripheral wall 5 of the container lid 1 and the container body 10.
8, only the thermoplastic resin layer 3 of the peripheral wall portion 5 was removed and provided at the upper edge 18a position. Therefore, by pulling the tab 6 upward (in the direction of the arrow shown in the first figure), the metal foil 2 is broken along the score line 7, and the peripheral wall portion extending from the score line 7 continuous to the tab 6 to the lower edge is broken. 5 is pulled away from the container body 10, and since the peripheral wall portion 5 extending from above the score line 7 to the entire periphery of the panel portion 4 is not adhered to the container body 10, it is possible to remove the container lid 1 without leaving it behind. You can do it and open it.

In the illustrated embodiment, the score line 7 provided on the container lid 1 was configured as a continuous linear score line by excluding only the thermoplastic resin layer 3 coated on the outer surface of the metal foil 2. It may also be constructed of stitched score lines formed by removing only layer 3 at regular intervals.

Further, the score line 7 may be provided above the upper edge 18a of the adhesive portion 18 between the peripheral wall 5 of the container lid 1 and the container body 10, or may be provided slightly at the upper edge 18a of the adhesive portion 18. It may also be provided so that it spans .

Furthermore, the formation of the score line 7 is also performed using the resin layer 3 of the peripheral wall portion 5.
Since only the resin layer 3 is removed by bringing a heated blade into contact with the resin layer 3, the score line 7 can be easily formed to a predetermined depth. Therefore, by pulling the tab 6 upward, the metal foil 2 is broken along the score line 7, and stable unsealability can be obtained.

In addition, in the above embodiment, a metal container body was used as the container body 10, but a cylindrical body mainly made of paper with a heat-adhesive resin coating applied to the inner and outer surfaces may be used. You can.

In this way, in the case of a composite can in which the container body 10 is made of paper, the container lid 1 is attached to the container body 1.
Since it can be incinerated together with 0, there are no disposal problems.

(Effect of the invention) According to the invention, the container lid is formed of metal foil and a thermoplastic resin layer coated on the outer surface of the metal foil, and the peripheral wall of the container lid and the container body are bonded together. Since the score line was provided at the upper edge position of the portion by removing only the thermoplastic resin layer of the peripheral wall, the inner surface of the peripheral wall of the container lid extends from the position where the score line was provided to the lower edge of the container body. It is fitted onto the outer surface of the opening and fixed with adhesive. Therefore, since the peripheral wall of the container lid that extends from above the score line to the entire periphery of the panel section is not bonded to the container body, the metal foil can be broken along the score line by pulling the tab upward when opening the package. By doing this, the peripheral wall part extending from the score line to the lower edge connected to the tab is separated from the container body, and the container lid is removed without leaving the peripheral wall part extending from above the score line to the entire periphery of the panel part on the container body. It is easy to open, and since the score line is provided only on the thermoplastic resin layer on the peripheral wall of the container lid, the thickness of the metal foil that does not form the score line can be made thinner, making it possible to reduce the weight of the entire container. In addition, since the score line is provided by excluding only the thermoplastic resin layer, it is possible to easily and reliably form the score line at a predetermined depth, thereby providing an easy-open container with stable unsealability.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway side view showing an example of the implementation of the present invention, and FIG. 2 is an enlarged view of portion A in FIG. 1. DESCRIPTION OF SYMBOLS 1... Container lid, 2... Metal foil, 3... Thermoplastic resin layer, 4... Panel part, 5... Peripheral wall part, 6...
Tab, 7... Score line, 10... Container body, 18...
...Adhesive part, 18a... Upper edge of the adhesive part.

Claims (1)

[Scope of utility model registration request] A container lid in which an opening tab is provided on the lower edge of a peripheral wall that hangs down and is connected to the entire periphery of the panel, and a score line is provided on one side edge of this tab and extends all the way around the peripheral wall. In a container whose peripheral wall portion is fitted and bonded to the container body, the container lid is formed of a metal foil and a thermoplastic resin layer covering the outer surface of the metal foil,
An easy-open container characterized in that the score line is provided at an upper edge position of the bonded portion between the peripheral wall of the container lid and the container body by removing only the thermoplastic resin layer of the peripheral wall.