JP2787165B2 - Perforated lid material and method of manufacturing the same - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a perforated lid for a container for filling a beverage such as juice and a method for producing the same.

(Prior Art) Conventionally, a paper or plastic cylindrical container is filled with a beverage such as juice, and an opening thereof is sealed with a sheet-like lid material. As such a container, the one in which the lid is peeled off at the time of drinking so as to open the entire opening and the drinking is made from the opening is common. However,
When the entire opening of the container is opened in this way, it is difficult to drink if the area of the opening is large,
In particular, there is a disadvantage that the contents are spilled when drinking in a vibrating vehicle, even for an infant or an adult.

Therefore, in order to eliminate such inconvenience, a fluid outlet is provided in advance in the base material layer of the lid material of the container, and the coating layer is superimposed on the surface of the base material layer using an adhesive that is easily peeled. There has been proposed a lid material for a container in which a fluid outlet is exposed on the surface by peeling the coating layer (Japanese Utility Model Laid-Open No. 61-12726). In addition, a hole is previously made in the intermediate strip of the lid material of the container, and a coating is attached to each of the upper and lower surfaces of the hole, and the coating on the upper surface is easily peeled off from the intermediate strip. The coating on the upper surface and the intermediate strip are peeled off by peeling off the coating, and the coating on the lower surface of the hole is lifted and torn to open the hole (Japanese Patent Publication No. 62-1987). No. 12099).

(Problems to be Solved by the Invention) In the technique described in Japanese Utility Model Application Laid-Open No. 61-12726, the base material layer provided with the fluid outlet is located at a position in contact with the contents inside the container. There is a problem that the liquid in the container permeates from the fluid outlet. On the other hand, in the above-mentioned Japanese Patent Publication No. 62-12099, since the coating is applied to the lower surface of the intermediate strip, it is possible to prevent liquid from penetrating into the holes, but a laminating step for closing the holes is required. There is a problem that the process becomes more complicated because of the increase.

The present invention has been made in view of the above-described problems, and in a container that is easy to drink by providing a hole in a part of the lid material, a laminating step for closing the hole is not required, and It is an object of the present invention to obtain an effective lid material in which contents do not penetrate into the hole and a method for producing the same.

(Means for Solving the Problems) In order to achieve the above object, a perforated lid material according to the present invention is provided with a sealant layer on the back surface of a base material layer and a partial temporary adhesion layer with holes left on the surface, A cut was made along the hole from the partial temporary adhesion layer to the back surface of the base material layer to leave the sealant layer, and the entire surface was covered with the overlay layer.

On the other hand, the method for producing a perforated lid material according to the present invention comprises, after providing a sealant layer on the back surface of the base material layer, providing a partial temporary adhesion layer with a hole left on the surface, and then forming the portion along the hole. A cut was made from the temporary adhesion layer to the back surface of the base material layer to leave the sealant layer, and then the entire surface was covered with the overlay layer.

 The cut can be provided by a laser.

Further, the cut may be provided by mechanical half-blanking.

(Effect) When the user pulls the pull tab portion of the lid material toward the center of the lid material by pulling the finger toward the center of the lid material, the portion of the overlay layer in contact with the temporary adhesion layer, that is, the portion outside the cutout, has both of these. Peeling is performed on the contact surface, but in the part inside the cut, the base material layer and the sealant layer adhere to the overlay layer and are lifted,
The sealant layer is cut using the notch as a mirror. Therefore, the cut portion becomes a hole, and this hole can be used as a drinking spout.

(Example) Hereinafter, an example is described based on drawings.

FIG. 1 is an explanatory view showing a manufacturing process of a laminated sheet of a perforated lid according to one embodiment of the present invention, and FIG. 2 is a perspective view showing a container provided with the perforated lid in a state where the lid is being opened. .

In this embodiment, a laminated sheet 1 of a lid material is provided with a polyethylene (PE) layer 4 as a sealant layer on the back surface of a polyester (PET) layer 2 as a base material layer via an adhesive 3a. 2, a pattern ink layer 5 and a temporary ink layer 6 are partially provided on the surface, and a cut 7 is provided in the temporary ink layer 6, the pattern ink layer 5 and the polyester layer 2, and the surface is overlaid with an adhesive 3b. It is formed by covering with a polyester layer 8 which is as follows.

The manufacturing process of the laminated sheet 1 as described above is as follows.

First, a polyethylene layer 4 is adhered to the back surface of the polyester layer 2 by dry lamination (FIG. 1 (a)). Then, in a printing step, a pattern ink is printed on the entire surface of the polyester layer 2 to form a pattern ink layer. 5 is formed, and a temporary ink is printed on the surface thereof while leaving holes 9 to form a temporary ink layer 6. The hole 9 is set to be slightly smaller than a hole 13 formed at the time of opening the lid 11, which will be described later (FIG. 1 (b)). Then, at a position slightly outside the hole 9, a cut 7 is made by a laser over the temporary ink layer 6, the pattern ink layer 5 and the polyester layer 2 (FIG. 1 (c)). Then, finally, the polyester sheet 8 is attached to the entire surface by dry lamination to form the laminated sheet 1 (FIG. 1 (d)).

Such a laminated sheet 1 has a tension tab on a part of a circle.
An inverted frustoconical container body 12 containing contents as shown in FIG.
It is used by being joined to the upper opening.

In use, when the portion of the pull tab 10 is pinched with a finger and pulled toward the center of the lid member 11, the portion of the adhesive 3 b in contact with the surface of the temporary ink layer 6, that is, the outside of the cut 7 is formed. In the portion, the peeling is performed at the contact surface between the two, but in the portion inside the cut 7, since each layer is lifted integrally with the polyester layer 8 on the surface, the polyethylene layer 4 Cut as a boundary. Therefore, the cut portion becomes the hole 13, and the hole 13 can be used as a drinking spout.

In the above embodiment, the cut 7 is provided by a laser, but may be provided by mechanical half-blanking. And this notch 7 is laminated sheet 1
Although it is provided so as to reach the back surface of the polyester layer 2 from the front surface side, it may be provided up to a position where it partially cuts into the polyethylene layer 4. Further, as the adhesives 3a and 3b, polyethylene sand lamination may be used instead of the above dry laminating.

The invention is capable of other various embodiments.

(Effect of the Invention) Since the present invention is configured as described above, in a container which is easy to drink by providing a hole in a part of the lid material,
There is no need for a laminating step for closing the inside of the hole, and the content does not penetrate into the hole.

[Brief description of the drawings]

FIG. 1 is an explanatory view showing a manufacturing process of a laminated sheet of a perforated lid according to one embodiment of the present invention, and FIG. 2 is a perspective view showing a container provided with the perforated lid in a state where the lid is being opened. . 1: laminated sheet, 2,8: polyester layer, 4: polyethylene layer, 6: temporary ink layer, 7: cut, 9: hole, 11: lid, 1
3: Hole.

Claims (4)

(57) [Claims] 1. A method according to claim 1, further comprising: providing a sealant layer on the back surface of the base material layer and providing a partial temporary adhesion layer having a hole on the surface, and extending from the partial temporary adhesion layer to the back surface of the base material layer along the hole. A perforated lid material, wherein a cut is made to leave the sealant layer, and the entire surface is covered with an overlay layer. 2. After providing a sealant layer on the back surface of the base material layer,
Provide a partial temporary adhesion layer leaving a hole on the surface, and then provide a cut along the hole from the partial temporary adhesion layer to the back surface of the base material layer and leave the sealant layer, and then the entire surface is A method for manufacturing a perforated lid material, wherein the lid material is covered with an overlay layer. 3. The method according to claim 2, wherein the cuts are provided by a laser. 4. The method for manufacturing a perforated lid material according to claim 2, wherein said cut is provided by mechanical half-blanking.