JPH08289Y2 - Lid material - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a lid material for a container filled with a beverage such as juice.

(Prior Art) Conventionally, it is known that a cylindrical container made of paper or plastic is filled with a beverage such as juice and the opening thereof is sealed with a sheet-shaped lid member. As such a container, it is general that the lid is peeled off at the time of drinking so that the opening is entirely opened so that the container can be drunk from the opening. However, when the opening of the container is opened in this way,
If the area of the opening is large, it becomes difficult to drink, and in particular, even an infant or an adult has a disadvantage of spilling contents when drinking in a vibrating vehicle.

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 superposed on the surface of the base material layer by using an adhesive that is easily peeled off. A lid material for a container has been proposed in which a fluid outlet is exposed on the surface by peeling off the coating layer (Japanese Utility Model Publication No. 61-12726). In addition, holes are made in advance in the intermediate strip of the lid material of the container, and coatings are adhered to the upper and lower surfaces of the holes, respectively, and the coating on the upper surface is easily peeled off from the intermediate strip. It has also been proposed that 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 at the hole portion is lifted and torn to open the hole (Japanese Patent Publication No. 62-62- 12099 publication).

(Problems to be Solved by the Invention) In all of the above-mentioned publications, holes are preliminarily provided in a part of the laminated material forming the lid material of the container, and therefore the steps for drilling are However, there is a problem in that the manufacturing process becomes complicated accordingly.

The present invention has been made in order to solve the above-mentioned problems, and in a container in which an opening is provided in a part of a lid member to make it easy to drink, a hole is previously formed in a laminated material forming the lid member. It is an object of the present invention to obtain a lid material that does not need to be provided and can keep the mouth hygienic.

(Means for Solving the Problems) The lid material according to the present invention comprises a laminated sheet in which an overlay layer, a characteristic direction easy tear film layer, and a sealant layer are sequentially laminated, and one end in the stretching direction of the specific direction easy tear film layer is used. A lid member having a pull tab for forming an opening formed therein, which is opened in a band shape by tearing in the extending direction with the pull tab, wherein a notch is provided at the base portion of the pull tab, and an easy tear in a specific direction with the overlay layer. The film layer and the width of the pulling tab are directly laminated at a portion that becomes a strip-shaped opening formed with a width substantially equal to that of the pulling tab, and is laminated via a temporary adhesion layer except for the portion that becomes the strip-shaped opening. It is a thing.

Here, the specific direction easily tearable film layer can be constituted by a uniaxially stretched film.

(Function) When the pull tab portion of the lid material is pinched with a finger and torn toward the center of the lid material, the temporary attachment is performed in the portion where the overlay layer and the easy-tear film layer are laminated via the temporary attachment layer. Peeling occurs between the layer and the easily tearable film layer, and the easily tearable film layer and the sealant layer are lifted up together with the overlay layer in a portion where the overlay layer and the easily tearable film layer are directly laminated without a temporary adhesion layer. The easily tearable film layer and the sealant layer are cut at the boundary between the portion where the temporary adhesion layer is provided and the portion where the temporary adhesion layer is not provided, and are torn in the stretching direction. Then, the cut and torn portion serves as a strip-shaped opening, and this strip-shaped opening can serve as a drinking mouth.

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

FIG. 1 is a configuration diagram of a laminated sheet 1 as a lid material according to an embodiment of the present invention, FIG. 2 is a perspective view showing a container provided with the lid material in a state in which the lid material is being opened, and FIG. FIG. 3 is a plan view of the same container.

In this embodiment, the laminated sheet 1 of the lid material includes the unstretched nylon (CN) layer 4 on the back surface of the uniaxially stretched polyethylene (OPE) layer 2 via the adhesive 3a so as to form the unidirectionally tearable film layer. Further, on the back surface thereof, a polyethylene layer 5 constituting a sealant layer is provided via an adhesive 3b, while on the front surface of the uniaxially stretched polyethylene layer 2, a temporary ink layer 6 is partially provided via an adhesive 3c. A pattern ink layer 7 and a polyester (PET) layer 8 are provided on the surface to form an entire overlay layer. The temporary-adhesion ink layer 6 is formed by printing the temporary-adhesion ink while leaving the strip portion 9 parallel to the stretching direction. In addition, this strip 9
The width of is set to be slightly smaller than the width of the opening 15 formed when the lid material 11 described later is opened.

The laminated sheet 1 having such a structure is cut out into a shape of the drawing shown in FIG. 3 in which the pulling tab 10 is projected in a circular shape to form the lid material 11. At this time, the uniaxially stretched polyethylene layer 2 is formed.
Are arranged so that the stretching direction of the same coincides with the tearing direction when the pull tab 10 is pulled. And such a lid material 11
Is provided with notches 13 at both roots of the pulling tab 10 and is joined to an upper edge portion 14 of an inverted frustoconical container body 12 containing contents such as juice as shown in FIG. used. In use, when the pull tab 10 is pinched with a finger and pulled toward the center of the lid material 11, the notch 13 serves as a trigger for peeling at the contact surface between the back surface of the temporary ink layer 6 and the adhesive 3c. However, in the portion where the temporary ink layer 6 is not provided, the uniaxially stretched polyethylene layer 2, the unstretched nylon layer 4 and the polyethylene layer 5 form a pattern ink layer 7 and a polyester layer 8 which form an overall overlay layer. It can be lifted up while being bonded.
The alternate long and short dash line in FIG. 1 indicates the surface on which such peeling or cutting is performed. Therefore, the lid material 11
Is a strip-shaped opening 15 that is torn into the shape shown in FIG.
Thus, the opening 15 can be used as a drinking mouth. The unstretched nylon layer 4 is a lid material.
It is provided for the purpose of cutting 11 straight. In the above examples, the specific direction easy tear film was constructed by providing the unstretched nylon layer 4 on the back surface of the uniaxially stretched polyethylene layer 2, but stretched nylon (ON) may be used instead of this unstretched nylon. Good. Also, as a sealant layer, instead of polyethylene, an ionomer (Io
n: trade name, Surlyn) and ethylene-vinyl acetate copolymer (EVA) can be used. As the adhesives 3a to 3c, either dry laminating (DL) or polyethylene sand laminating may be used.

In addition, the notch provided at both roots of the pull tab 10
If 13 is provided only on the inner layer without leaving the entire layer of the laminated sheet 1 and leaving the polyester layer 8 or the like as the surface layer, the strip-shaped opening 15 is more reliable. Can be formed.

The present invention can be embodied in various forms.

(Effects of the Invention) Since the present invention is configured as described above, it is necessary to make a hole in the laminated material constituting the lid material in advance in a container in which an opening is provided in a part of the lid material to facilitate drinking. There is no need for a hole-drilling process, and the mouth is the release surface of the overlay film, which is hygienic.
This has the effect that the tab piece for opening can be manufactured at a lower cost than a separate piece.

[Brief description of drawings]

FIG. 1 is a configuration diagram of a laminated sheet 1 as a lid material according to an embodiment of the present invention, FIG. 2 is a perspective view showing a container provided with the lid material in a state in which the lid material is being opened, and FIG. FIG. 3 is a plan view of the same container. 1: laminated sheet, 2: uniaxially stretched polyethylene layer, 4: unstretched nylon layer, 5: polyethylene layer, 6: temporary ink layer, 7: pattern ink layer, 8: polyester layer, 9: belt-like portion, 10: tension Tab, 11: cover material, 13: notch, 15: opening.

Claims (2)

[Scope of utility model registration request] 1. A laminated sheet in which an overlay layer, a specific direction easy tear film layer, and a sealant layer are sequentially laminated,
An opening forming tension tab is formed at one end in the stretching direction of the specific direction easily tearable film layer, and the lid member is opened in a strip shape by tearing in the stretching direction with the tension tab, and a base of the tension tab. A notch is provided in a portion, and the overlay layer and the specific direction easy tear film layer are directly laminated in a portion that becomes a band-shaped opening formed with a width substantially the same as the width of the pulling tab, A lid material, which is laminated via a temporary adhesion layer except for a portion which becomes an opening. 2. The lid material according to claim 1, wherein the easily tearable film layer in a specific direction is composed of a uniaxially stretched film.