JP4672414B2 - Container with lid attached - Google Patents

Description

  The present invention relates to an opening mechanism of a container, particularly a container having a lid attached and sealed.

It has been practiced to sterilize at high temperatures such as retort sterilization after storing contents such as beverages and food in a container body and sealed with a lid member. There is a pressure difference between the internal pressure of the container and the atmosphere, and the internal pressure is shipped as it is at a pressure different from that of the atmosphere. Sometimes it was raised.
Moreover, depending on the contents of dairy products, the internal pressure may be increased by fermentation or the like.
Therefore, when opening and closing the lid member of the container in eating and drinking, there arises a problem that the contents may be scattered due to a pressure difference.

  In order to solve this problem, in a packaging container in which a lid is bonded to the flange at the top of the container body, a cut is made in the center of the knob of the lid, and the part protruding from the flange is near the center of the lid. To the opening position, rough surface processing is performed to form an easy tear part, and when opening, the lid material is peeled left and right with both sides of the knob, first, an air flow passage is formed, and the pressure difference inside and outside is eliminated, 2. Description of the Related Art Conventionally, a packaging container that prevents the contents from scattering and tears the lid material so as to easily open the lid is known (for example, see Patent Document 1).

  In addition, cuts are provided on both sides of the opening tab, and the auxiliary adhesive portion is positioned on both sides.When opening the tab, the air enters first to eliminate the pressure difference between the inside and outside. A cup-type container that is prevented from scattering is also conventionally known (for example, see Patent Document 2).

Also, a protrusion is provided on the knob of the lid, and when opening, the knob is bent and a small hole is opened in the lid with the protrusion, or a small hole is opened in the lid member and a seal is attached. A cup-shaped container is also conventionally known in which the internal and external pressures are first equalized and the contents are prevented from scattering when the lid is opened by opening the lid (see, for example, Patent Document 3).
JP 2001-48221 A JP 2001-139061 A JP-A-10-236532

In the container described in Patent Document 1, there is a problem in that holding the container body itself becomes unstable because the left and right knobs must be grasped with both fingers when opening the container.
Further, since the adhesion of the lid member itself is strong, there is a problem that the lid member is not easily peeled off.

  The container described in Patent Document 2 has a problem that it is difficult to peel the cover body entirely when the adhesive strength of the adhesive portion is strong.

  In the container described in Patent Document 3, since the protrusion is provided with the protrusion, there is a problem that the finger may be damaged by the protrusion. There was a problem that it took an extra effort.

  An object of the present invention is to solve the above-mentioned problems, and firmly hold the container body with one finger and pull the knob part around with one finger to bond the lid seal member that becomes the lid. Remove the lid sealing member from the container body by separating the adhesive surface part of the flange so that the lid can be opened easily, and the internal and external pressures are equalized at the beginning of opening to prevent the contents from scattering An object of the present invention is to provide a sealed container with the lid attached thereto.

In order to solve the above-mentioned problems, the present invention is a container comprising a container body provided with a flange at the upper end as a container and a lid bonded to the flange. Provided with a tearing groove for cutting the flange that is engraved at a certain distance from the opening and an opening cutting groove that reaches the tearing groove from the outer periphery of the flange, and protrudes from the outer peripheral edge of the flange in contact with the opening cutting groove The outer surface of the tear groove is provided with an adhesive surface on the flange surface, and a lid is bonded to the flange surface, and a predetermined width portion that is not bonded is provided on the inner side of the tear groove. The structure characterized by this is adopted.

In addition to the above configuration, a configuration in which a notch directed in the radial direction of the flange is provided in a corresponding portion of the opening cutting groove on the outer periphery of the flange is adopted.

  As an example of the container main body, the container main body is a circular cup-shaped container, the knob piece extends in the circumferential direction along the outer periphery of the flange, and can be cut between the distal end portion of the knob piece and the peripheral edge of the flange. The structure characterized by the piece being constructed is adopted.

  On the back of the flange provided at the upper end of the container body, a tearing groove for dividing the flange and a cutting groove for opening from the outer periphery of the flange to the tearing groove are provided, and an adhesive surface is provided on the flange surface on the outside of the tearing groove. Since the lid is attached and the lid is attached, when opening the tearing groove, an air flow passage is formed, the pressure inside and outside can be equalized, and the contents can be prevented from scattering. .

  Further, by pulling the outer side of the tearing groove while pulling outward, the adhesive surface portion of the lid body is separated from the container main body together with the outer peripheral portion of the flange, so that the lid can be opened easily.

  Next, embodiments of the container of the present invention will be described with reference to the drawings.

The first embodiment relates to a cup-shaped container. In FIG. 1, A is a container body, and B is a lid.
The container body A may be formed by injection molding or thermoforming using PP, PET, or other heat-resistant resin as a material, and may be laminated or blended.
When using a resin, it is molded by thermoforming.

  The lid B is composed of a single-layer sheet such as PET, other synthetic resin films, an aluminum sheet, or a laminated sheet formed by laminating them, and uses an aluminum sheet because it is easy to cut. It is preferable.

As shown in FIGS. 1-3, the container main body A is provided with the trunk | drum peripheral wall 1 and the bottom wall 2, the trunk | drum peripheral wall 1 is formed in cone shape, and the upper part is provided with the enlarged diameter part 4 which protruded the flange 3. It has become.
At a predetermined position of the flange 3, a knob 5 that protrudes in an oblique direction from the flange 3, forms a gap between the outer peripheral edge of the flange, and extends in the circumferential direction is continuously provided.

The knob 5 has an inclined side 6 and a circular outer peripheral edge, a tip 7 is provided with a severable connecting piece 8 connected to the flange 3, and a non-slip 9 is engraved on the surface side. Yes.
As shown in FIG. 3, a circular tearing groove 10 for dividing the flange 3 extending over the entire circumference is formed on the rear surface of the flange 3 in the center of the radial width of the flange 3. A straight opening cutting groove 11 which is parallel to the inclined side 6 from the portion and reaches the tearing groove 10 is engraved, and is directed to the flange 3 outer periphery corresponding part of the opening cutting groove 11 in the radial direction of the flange 3. A notch 12 is formed.

As shown in FIG. 2, the sheet 13 of the lid B is punched into the same circle as the outer periphery of the flange 3.
After the contents 13 are filled, the sheet 13 is adhered to the flange by heat welding of an adhesive or the like with the adhesive surface 14 extending from the outer side to the outer peripheral edge of the tearing groove 10 of the flange 3.

Next, the usage mode and operational effects of the cup-shaped container of the present invention will be described.
The container body A is filled with contents such as beverages and food, and a lid B is adhered and sealed.

When opening the container, as shown in FIG. 4, holding the container body A and lifting the picking piece 5 upward with the other finger, the connecting piece 8 is cut, and then the opening cutting groove 11 is torn. A gap is formed between the inner side of the adhesive surface 14 and the tearing groove 10 by the cut portion of the opening cutting groove 11, and the outside air flows in from the gap, so that the internal pressure and the external pressure become equal.
Therefore, when opening the seal, first, the internal and external pressure differences are eliminated, so that even if the tear groove 10 is subsequently torn and the opening range is expanded, the contents can be prevented from moving up and down or scattered due to the pressure difference. it can.

  When the knob 5 is further pulled around, the tearing groove 10 is torn, and the flange 3 is divided into two inward and outward.

Since the adhesive surface 14 of the lid B is outside the tearing groove 10, the sheet 13 is torn together with the tearing groove 10 according to the division of the flange 3, and peels off from the container main body A. When it is torn over the circumference, the remaining sheet 13 of the lid B is also completely separated from the container main body A and opened.
Therefore, the lid opening is performed by a simple operation of pulling the knob 5.

  As described above, in the container of the present embodiment, when opening the container, air is first introduced to eliminate the pressure difference between the inside and the outside, so that scattering due to fluctuations in the pressure of the contents is prevented and the lid can be opened very easily. Became.

Further, in the container of the present embodiment, since the adhesive portion with the lid is removed together with the fracture of the flange, it is no longer necessary to pull up the lid and peel off the adhesive portion between the container and the lid as in the prior art. .
For this reason, the adhesive strength between the container and the lid can be sufficiently increased, and the lid does not peel off from the container at the time of distribution or the like, and there is no possibility of leaking the contents.

Next, an embodiment relating to a rectangular container will be described.
Although the circular cup-shaped container has been described in the above embodiment, the present invention can also be adopted in a rectangular container.

5 and 6, Aa is a rectangular container body having an arcuate corner, and Ba is a lid.
The container main body Aa includes a trunk peripheral wall 20 and a bottom wall 21 having a square cross section, and the trunk peripheral wall 20 includes a widened portion 23 having a fixed width flange 22 projecting from the outer periphery of the upper end.
On the back surface of the flange 22, a tearing groove 24 for dividing the flange is formed at a constant distance from the outer periphery of the flange 22, and the corner 25 of the flange 22 is used for opening to reach the tearing groove 24. A cutting groove 26 is formed.

  The lid Ba has an outer periphery having the same shape as the outer periphery of the flange 22, and, similarly to the first embodiment, an adhesive surface 27 is formed outside the tearing groove 24 for dividing the flange, Bonded to the surface.

  When opening the lid Ba, if one side of the opening cutting groove 26 of the flange 22 is lifted, the opening cutting groove 26 is torn, and when the tearing groove 24 is reached, the opening cutting groove 26 and the tearing groove 24 An air flow passage is formed between them, and the internal and external pressures are substantially equal, and the contents can be prevented from scattering due to pressure fluctuations.

Next, when the outer side of the flange 22 is lifted up with the outer side of the tearing groove 24 of the flange 22 and the tearing groove 24 is torn, the flange 22 is divided into an inner part and an outer part. The lid Ba separated and bonded to the bonding surface 27 is peeled off from the container main body Aa and opened.
Therefore, the second embodiment can obtain the same operation and effect as the first embodiment.

  In each of the above embodiments, the cross-sectional shape of the container is a circle or a quadrangle with rounded corners, but the cross-sectional shape may be an ellipse, a pentagon, or other polygons, including a flange, There is no particular limitation on the shape of the container as long as it is provided with a tearing groove for separation located in the middle part, an adhesive surface on the outside, and a cutting groove for opening that can cut to the tear line.

  Further, in the second embodiment, the knob piece was not attached, but a circular piece protruding from the periphery of the flange or other appropriate shape of the knob piece may be provided, and the shape is also disclosed in the first embodiment. The shape is not limited, and a circular shape may be used.

  By cutting the opening cutting groove and dividing the flange of the container body, the present invention eliminates the pressure difference between the inside and outside at the time of opening, suppresses vertical fluctuation of the contents, and prevents scattering. Even if the object is a liquid, a viscous material, or a powder, it can be widely used.

It is a partial cross section elevation of the cup-shaped container of 1st Example of this invention. It is the top view which fractured | ruptured a part of lid body of a cup-shaped container. It is a bottom view of a cup-shaped container. It is a perspective view explaining the open state of a lid. It is a cross-sectional elevation view of the container of the second embodiment. It is a bottom view of a container.

Explanation of symbols

A, Aa Container body B, Ba Lid 1, 20 Trunk wall 2, 21 Bottom wall 3, 22 Flange 4 Diameter enlarged portion 5 Knob piece 6 Inclined side 7 Tip portion 8 Connection piece 9 Non-slip 10, 24 Tear groove 11 , 26 Opening cutting groove 12 Notch 13 Sheet 14, 27 Adhesive surface 23 Widened portion 25 Corner portion

Claims (3)

A container comprising a container body provided with a flange at the upper end, and a lid bonded to the flange;
Provided on the rear surface of the flange with a tearing groove for dividing the flange that is engraved at a position keeping a certain distance from the periphery along the outer periphery of the flange, and an opening cutting groove that reaches the tearing groove from the outer periphery of the flange. Comprising a knob extending outwardly so as to protrude from the outer peripheral edge of the flange in contact with the cutting groove;
A container characterized in that an adhesive surface is provided on an outer surface of the tearing groove on the flange surface to adhere a lid, and a portion having a predetermined width that is not adhered to the inner side of the tearing groove is provided . The container according to claim 1, wherein a notch directed in the radial direction of the flange is provided in a corresponding portion of the cutting groove for opening on the outer periphery of the flange . The container body is a circular cup-shaped container,
The knob is extended in the circumferential direction along the outer periphery of the flange,
The container according to claim 1 or 2, wherein a connecting piece that can be cut between the peripheral edge of the flange is provided at the tip of the knob piece .

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