JPS5841179Y2 - packaging container - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a packaging container in which the lid of the airtight container can be easily opened with a fingertip without the use of an auxiliary tool.

Conventional methods for opening airtight containers include attaching a pull top and removing the container with a knife, but all of these methods require an auxiliary tool for opening.

A known packaging container that can be opened without an auxiliary tool is disclosed in Japanese Utility Model Publication No. 17198/1983, but it is not sufficient as an easy-to-open container in terms of airtightness and opening performance.

The inventors of the present invention have studied a packaging container that eliminates the drawbacks of these conventional packaging containers and has excellent sealing and opening properties, and have completed the present invention.

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

The container body 1 shown in FIG. 1 may be made of paper, a composite paper container made of paper coated with plastic resin, or a composite paper container made of paper laminated with a plastic film or sheet, and its shape may be cylindrical or square. It may be in the form of

The bottom 4 of the container body 1 may be made of the same material as the container body, or may be made of plastic or metal.

The outer lid 2 may be made of paper, plastic, or metal, and a product name, explanatory text, etc. may be printed on the outer lid to enhance the display effect, and also to protect the lid 3 and facilitate display.

The lid 3 is a lid that provides airtightness to the container body 1, and may be made of plastic alone, but in order to provide better airtightness and further rigidity as a lid, it is made of plastic as shown in Figure 4. Aluminum foil etc. on material 9 10
You can also laminate it.

The size of the aluminum foil, etc. 10 to be laminated is slightly larger than the notched guideline 8, but this is to provide airtightness as a lid and to give it elasticity as a lid when opening and closing.

The lid 3 and the container body 1 are sealed by a sealing method such as heat sealing, impulse sealing, ultrasonic sealing, high-frequency sealing, etc. at the sealing part 5 inside the container body so as to have sufficient airtightness as a hermetically sealed container. .

In some cases, the end portion 1' of the container body 1 is bent inward using a special jig, but this is not necessary when the lid 3' is set and sealed as shown in FIG.

Figure 6 shows the lid and container body combined, with 5 being the sealing part, 6 being the auxiliary opening and being connected to the container body, 7 being the opening and being removed when opening, 8
An opening guideline is provided with a notch in advance to facilitate opening, and this guideline notch 11 is attached along the guideline to the front or back surface of the plastic lid material, as shown in FIG.

Further, the guideline 8 may have an arbitrary shape as shown in FIGS. 10 and 11.

The method of opening the packaging container according to the present invention is as shown in FIG. 8, when the auxiliary opening 6 is pushed down, the container is torn along the notched guideline 8, and the auxiliary opening 6 remains on the container body side.

The opening 7 is then torn along the guideline by pulling upward with a finger and completely removed, and the container body 1
The packaged object can now be taken out.

The position of the auxiliary opening 6 should be as close as possible to the container body and the sealing part 5 of the lid, as shown in Fig. 6, and its size should be no larger than the radius a of the opening 7, as shown in Fig. 9. It is desirable that there be.

This is because the auxiliary opening portion 6 becomes in a kind of cantilevered state when opening the opening, making it easier to open the opening.

Incidentally, if the auxiliary opening 6 is attached to the center of the opening (lid), a considerable amount of force is required, and the container cannot be called an easy-to-open container.

As described above, the packaging container according to the present invention has the container body and lid sealed with a heat sealer, high-frequency sealer, etc., so it has excellent airtightness, that is, moisture resistance, and product protection. Since the opening can be easily opened with a fingertip without the need for an opening aid such as a jig or a knife, it is not only very advantageous in terms of cost, but also safe as there is no risk of injury to fingers.

Further, since the opening portion is opened along a notched guideline, any shape can be selected, and the opening area can be changed depending on the object to be packaged, so there is an effect that the type of object to be packaged is not restricted.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, and FIG. 1 is a partially cutaway front view of a packaging container according to the present invention, FIG. 2 is a partially cutaway partial view showing the container body and the sealing part of the lid, and FIG. Figure 4 is a partially cutaway front view of the outer lid, Figure 5 is a partially cutaway front view of the lid.
The figure is an example of a cross-sectional view of the set part of the container body and lid.
7 is a sectional view of the notched lid, FIG. 8 is a sectional view of the opening, FIG. 9 is a plan view of the opening showing the state of the auxiliary opening, and FIG. FIG. 10 is a plan view showing an example of the opening, and FIG. 11 is a plan view of the container excluding the outer lid.

Claims (1)

[Scope of utility model registration request] In a packaging container in which a container body 1 mainly made of paper and a lid 3 are sealed to provide airtightness, the lid 3 is made of a composite sheet of a plastic sheet 9 and a smaller aluminum foil etc. 10, and the plastic sheet is used as an auxiliary sheet. Insert an opening notch 1 inside the aluminum foil, etc. with an opening 6.
1 along the opening guideline 8 on the front or back side of the sheet, and the auxiliary opening 6 is located between the container body 1 and the lid 3.
The packaging container is located close to the sealing part 5 of the container, and the opening part 7 is surrounded by an opening guideline 8, so that the packaging container can be easily opened while having a sealing property.