JPS6030213Y2 - Container lid that can be easily opened - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a container lid provided with an opening that can be easily opened.

BACKGROUND ART Can lids with an opening that can be easily opened, called a pull-top type, have been widely known for some time.

On the other hand, paper containers or synthetic resin containers having a cup shape are also widely used.

And the lids of these paper containers or plastic containers are
Generally referred to as a seal lid, the lid is usually made of aluminum film, and a polyethylene film or other thermoplastic synthetic resin film is laminated on the back side of the lid, and in some cases, a hot melt type adhesive layer is also provided.

This sealing lid is then heat-bonded to the flange of a paper container or plastic container to seal the container.

For containers with heat-bonded seal lids as described above,
Because the sealing lid is relatively strongly adhered to the container flange and when the sealing lid is opened, the container must be gripped relatively strongly because the sealing lid is peeled away from an outer position of the sealing lid. Ta.

As a result, not only the container may become deformed, but also the liquid content may leak due to shaking of the container when the seal lid is peeled off.

Therefore, in the past, the strength of the container had to be increased so that it would not be deformed even if the container was gripped relatively strongly, which also resulted in increased costs.

In view of the above points, the inventor developed a container lid that can be easily opened without peeling the entire seal lid from the container, similar to the pull-top method for cans, even if the seal lid is made of an aluminum film or the like as an engraft. was researching to develop.

In other words, the main purpose of the present invention is to provide a new container lid that can be easily opened without peeling the entire lid from the container. It is also an object of the present invention to provide a new container lid that makes it possible to reduce the cost of the container without increasing the strength of the container, and also allows for easy drinking after opening.

For this reason, in the present invention, the container lid has a slight rising part on the periphery of the lid, and an overhanging edge that projects outward from the top of this rising part, and the container lid has an attached body such as aluminum film or paper. It is composed of a thermoplastic synthetic resin film such as polyethylene laminated over the entire back surface, and one end is positioned near the lower end of the rising edge of the lid to form an opening only for the adherent body.The edge along this opening At the same time, a printed layer is provided on the surface of the adherent body, leaving a print layer on the surface of the adherent body, and a sealing piece is provided with a synthetic resin adhesive layer such as acrylic-ethylene copolymer on the back side of the sealing piece mainly made of aluminum film, etc., to cover the opening. The gist is that a seal is placed on the surface of the adherent, and the seal piece located in the opening is adhered to a thermoplastic synthetic resin film on the back side of the adherent.

The present invention will be explained in detail below with reference to embodiments shown in the drawings.

B in the figure is a known cup-shaped paper container with polyethylene film laminated on its inner and outer surfaces, and a container lid A of the present invention is applied to this container B (as shown in the first figure).

This lid A, like the known sealing lid, has a slight rising portion 1 at its periphery, and has an overhanging edge 2 projecting outward from the top of this rising portion 1.

This lid A, like the known sealing lid, is composed of an adherent 3 made of aluminum film or paper, and a thermoplastic synthetic resin film 4 such as polyethylene laminated over the entire back surface of the adherent 3.

In the figure, reference numeral 5 denotes an opening formed only in the attaching body 3, one end of which is located near the lower end of the rising portion 1 (lower end position in the illustrated embodiment), and the other end is approximately 1n of the diameter of the lid. It is located at the position of .

That is, without forming an opening in the thermoplastic synthetic resin film 4, the synthetic resin film 4 closes the opening 5 of the adherent body 3 from the back side thereof.

Further, the surface of the adherent body 3 has a printed layer 6, and this printed layer 6 is formed by leaving an edge 7 along the opening 5.

That is, the edge 7 constitutes a portion without printing.

Furthermore, 8 in the figure is a seal piece that closes the opening 5 from its surface, and this is a seal piece main body 9 made of aluminum film or the like.
A synthetic resin adhesive layer 10 made of acrylic-ethylene copolymer or the like is provided on the back side of the substrate.

Then, cover the opening 5 with this seal piece 8 and attach it to the attached body 3.
The sealing piece 8 located in the opening 5 is adhered to the thermoplastic synthetic resin film 4 on the back surface of the attaching body 3 (as shown in FIGS. 3 and 4).

Up to this point, the adhesive state of the seal piece 8 to the adherent body 3 is that the seal piece 8 is adhered to the unprinted edge 7 at the periphery of the seal piece 8 and the printed area outside of the edge 7, but the adhesive is strong at the unprinted edge 7. is,
The outer printed portions are relatively loosely bonded.

The inner end 11 of the seal piece 8 is not attached to the adherent body 3, but is used as a knob piece.

A more preferred embodiment is shown in FIG.

That is, in this embodiment, a pair of notches 12 and 12 are formed on an extension of the unprinted edges 7 located on both sides of the opening 5, and when the inner edge 11 is pinched and the seal piece 8 is peeled off, The notch 12. is removed without the entire seal piece 7 being peeled off.
A cut is made from 12, and both sides of the seal piece 7 are attached to the engraft 3.
Even if the seal piece 8 is once peeled off and then closed again, it is clearly seen that the opening 5 has been opened, and the poisonous substance remains on the surface of the opening 5 once the opening 5 is opened. Even if the seal piece 8 is closed again after injecting the liquid, it becomes obvious and is effective in preventing danger.

The container lid of the present invention having the above-mentioned structure is obtained by punching an opening 5 in a planar engraving body 3 that does not form a rising portion 1, then laminating a thermoplastic synthetic resin film 4 on the back surface of the opening 5, and then attaching the engraving body 3 A sealing piece 8 is sealed on the surface of the adhesive body 3 by covering the opening 5, and the part located in the opening 5 is adhered to the thermoplastic synthetic resin lime 4 on the back surface of the adherent body 3.
Thereafter, the rising portion 1 and the overhanging edge 2 may be formed by pressing.

When opening the container B fitted with the lid A of the present invention, the inner end 11 of the seal piece 8 located approximately at the center of the lid A is picked up and pulled upwards to peel off the seal piece 8.
The portion of the thermoplastic synthetic resin film 4 adhered to is cut along the edge of the opening 5 and pulled up together with the sealing piece 8 to open the opening 5.

Therefore, it is possible to drink the contents from the opening 5.

As described above, according to the lid of the present invention, the opening can be opened by simply peeling off the seal piece without peeling the entire lid from the container. As a result of peeling and opening toward the surface, the opening has the advantage of being simple and extremely easy to perform.

Because of the ease with which the seal piece can be opened, there is no need to increase the strength of the container itself, and it has a great practical effect in that it can sufficiently reduce the cost of the container.

In addition, in the present invention, one end of the opening is located near the lower end of the rising portion of the lid, making it easy to drink after opening, and has many practical effects.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention. Figure 1 is a perspective view showing the lid of the invention applied to a container, Figure 2 is a plan view of the lid of the container of the invention, and Figure 3 is the top view of Figure 2. ■An enlarged cross-sectional view of the main part taken along the line IV--M, FIG. 4 is an enlarged cross-sectional view taken along the IV-IV line in FIG. 2, and FIG. FIG. 3 is a partially cutaway plan view. 1... Rising part, 2... Overhanging edge,
3...Adhesive body, 4...Thermoplastic synthetic resin film, 5...Opening, 6...Printed layer, 7... Edge, 8...Seal piece,
9...Seal piece main body, 10...Synthetic resin adhesive layer.

Claims (1)

[Scope of utility model registration request] There is a slight rising part 1 on the periphery of the lid A, and this rising part 1
It is a container lid having an overhanging edge 2 extending outward from the top of the container, and is composed of an adherent body 3 such as an aluminum film or paper, and a thermoplastic synthetic resin film 4 such as polyethylene laminated on the entire back surface thereof, One end is positioned near the lower end of the rising edge of the lid A, and an opening 5 is formed only in the engraft 3, and a printed layer is formed on the surface of the engraft 3, leaving an edge 7 along the opening 5. At the same time, a sealing piece 8 having a synthetic resin adhesive layer 10 such as acrylic-ethylene copolymer on the back side of a sealing piece main body 9 made of aluminum film or the like is provided to cover the opening 5 and seal the surface of the adherent body. A container lid that can be easily opened is made by adhering a sealing piece 8 located at the opening 5 and a thermoplastic synthetic resin film 4 on the back surface of the adherent body 3.