JPH0333637Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an easy-to-open lid in which aluminum foil is heat-sealed to the opening of the aluminum lid.

[Prior art] Today, an aluminum lid is provided with an opening for taking out the contents, and the opening is covered with aluminum foil with a thermoplastic resin layer having heat adhesive properties on the back side for easy opening. Lids have come to be used more and more.

As shown in FIG. 5, this easy-to-open lid is provided with an appropriately shaped opening 12 in the top plate 11 of a lid 10, which is called an aluminum lid and has an outer shape corresponding to the shape of the container opening. The top plate portion 1 is sealed by heat sealing or the like as an unsealing piece 21 of aluminum foil large enough to cover it.
1. Then, in order to peel off the aluminum foil that is the opening piece 21 and form a knob 22 to facilitate opening of the opening 12, a part of the aluminum foil is not adhered to the top plate 11. A knob 22 is formed, and an adhesive part 25 is formed around the opening 12 so as to seal the opening 12.

By the way, this aluminum foil is generally extremely thin.
If the knob 22 comes into close contact with the lid top plate 11, it may be difficult to grasp the knob 22 when peeling off the opening piece 21.

For this reason, as shown in FIG. 6, by forming an upwardly protruding part 14 on a part of the top plate part 11 and lifting a part of the aluminum foil from the top plate part 11, the knob part 22 can be extended from the top plate part 11. Avoid coming into close contact with people (for example,
60-106922).

Further, as shown in FIG. 7, a recess 1 having a slightly larger area than the knob 22 is formed in a part of the top plate 11.
5 is provided to create a gap below the knob 22.

[Problems to be solved by the invention] As mentioned above, by providing an upward protrusion to make the knob stand out, or by forming a concave part to create a gap below the knob, the fingertips can be It is easy to insert the knob under the knob, and it is easy to grasp the knob when pulling up the opening piece. After the body was attached to the container, when the container was handled, the knob was likely to come into contact with foreign objects, and there was a risk of damage to the knob.

In addition, a lid with a recess formed in the top plate has little risk of damaging the knob when handled, but when the opening piece is glued to the top plate, the heat may damage the knob that has entered the recess. There is a risk of it adhering, and if it is pressed from above when opening, there is a risk that the knob will be pushed into the recess and stick to the bottom of the recess, making it extremely difficult to pull it out. Ta.

[Means for Solving the Problem] The present invention provides a heat-sealable easy-opening lid in which an opening piece such as aluminum foil is adhered to the lid body of the aluminum lid by heat sealing or the like, and a knob is formed on a part of the opening piece. , a concave portion slightly larger than the knob is provided in the top plate of the lid at a position below the knob;
A plurality of protrusions made of ridge-like or hemispherical protrusions are formed in the recess, and the height of the protrusions is made approximately equal to the height of the top plate.

[Function] In the present invention, a concave portion is provided below the knob and a gap is formed below the knob, so it is easy to grasp the knob, and a protrusion is formed in the concave portion below the knob. Therefore, there is no risk that the knob is pushed into the recess and comes into close contact with the bottom of the recess, thereby eliminating the gap below the knob, and the height of the protrusion provided in the recess is small. Since the height is approximately equal to the height of the top plate, the entire opening piece including the knob is approximately the same height.
It is possible to prevent the knob from being damaged by hitting a foreign object when handling the lid.

[Embodiment] As shown in FIG. 1, the embodiment of the present invention is an aluminum lid having, for example, a circular outer circumferential shape, and the top plate portion 11 has an appropriate size and shape for taking out the contents. An opening 12 is formed, and an aluminum foil opening piece 21 covering the opening 12 is attached to the top plate 11.
is glued to.

This opening piece 21 is punched out to an appropriate size from a laminated film of aluminum foil whose back surface is coated with a thermoplastic resin having heat adhesive properties.
An adhesive portion 25 is formed on the periphery of the lid 10 to seal the opening 12.

A part of the unsealing piece 21 is a knob 22 that is not bonded to the top plate 11, and the knob 22 is provided in the top plate 11 so that a gap is formed below most of the part including the tip. The opening piece 21 is adhered so that the knob 22 is located in the recess 15.

Further, a large number of hemispherical protrusions 16 are provided in the recess 15 formed in the top plate 11, and the height of the protrusions 16 is approximately equal to the height of the top plate 11.
As shown in the figure, a knob 2 is attached to the top of this protrusion 16.
2 are brought into contact with each other, thereby maintaining the opening piece 21 in the shape of a horizontal flat plate.

Further, as shown in FIG. 3, in another embodiment, the protrusion formed in the recess 15 of the top plate part 11 is replaced with the hemispherical protrusion 16, and the protrusion in the direction perpendicular to the center line of the opening piece 21 is replaced with the hemispherical protrusion 16. A linear protrusion 17 whose axial direction is
A plurality of linear protrusions 17 are provided in parallel to form a ridge-like protrusion in the recess 15.

Note that the ridge-shaped protrusion is not limited to the case where it is provided in a direction perpendicular to the center line of the opening piece 21 as shown in FIG. 3, but may be provided parallel to the center line of the opening piece 21.

Furthermore, as shown in FIG. 4, a linear protrusion 17
It is also possible to have a shape that extends to the end of the recess 15 and substantially forms a plurality of linear recesses 19 .

As described above, in the embodiment of the present invention, the recess 15 is provided below the knob 22 of the unsealing piece 21 to form a gap, and the protrusion is formed in the recess 15 so that the knob 22
The height of the protruding part is made approximately the same as that of the top plate part 11, and the knob is placed at the top of the protruding part. The unsealing piece 21 is maintained in a horizontal flat plate shape by bringing the parts 22 into contact with each other.

In the above embodiment, the knob 22 is brought into contact with the apex of the protrusion, but it is also possible to bond the knob 22 to the apex of the protrusion.

When the knob 22 is bonded to the apex of the protruding part in this way, foreign matter may be removed from the knob 22 while the lid body 10 is being handled.
Since the knob 22 is prevented from being lifted up even if it comes into contact with a 22, and since the adhesive is in the form of dots or lines, the adhesive strength is weak. This means that it can be triggered.

[Effects of the invention] As mentioned above, in the present invention, since a gap can be reliably secured below the knob, the raising of the knob,
Furthermore, the opening piece can be easily peeled off, and since the entire opening piece is maintained in a flat plate shape while supporting the knob at the top of the protruding part, there is no risk of the knob getting caught inadvertently and damaging the knob. has advantages.

[Brief explanation of the drawing]

Fig. 1 is a plan view of the lid according to the present invention, Fig. 2 is a vertical sectional view of the main part of the lid shown in Fig. 1, and Figs. 3 and 4 show other embodiments according to the present invention. FIG. 5 is a plan view of a conventional lid, FIG. 6 is a sectional view of a main part of the conventional lid, and FIG. 7 is a plan view of another conventional example. 10=lid body, 11=top plate part, 12=opening part, 1
5 = recess, 16 = protrusion, 17 = linear protrusion, 1
9 = linear recess, 21 = opening piece, 22 = knob.

Claims (1)

[Scope of utility model registration request] An opening piece with a thermoplastic resin having thermal adhesive properties on the back is attached to the top plate of the lid so as to cover the opening provided in the lid, and the opening is sealed with the opening piece. In addition, in the easy-to-open lid in which a knob is formed in a part of the opening piece, a recess is provided in the top plate at a position corresponding to the lower part of the knob, and a plurality of protrusions are formed in the recess, and a plurality of protrusions are formed in the recess. A heat-sealable, easy-to-open lid characterized by having a height that is approximately the same as the height of the top plate.