JP2807050B2 - Sealing lid - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial application field) The present invention relates to a lid for sealing a container, and particularly to a lid for sealing made of a synthetic resin. The container provided with the lid is a container for storing powders and granules such as sugar, flour, salt, seasoning, detergent and the like.

2. Description of the Related Art For example, a composite container proposed in Japanese Utility Model Application No. 62-200813 in which a paper trunk and a synthetic resin portion are integrally adhered is used with a lid provided on an upper opening thereof. In practice, the lid is attached with a tack label or covered with a shrink film so that it cannot be opened by mischief.

However, all of these methods increase the number of processing steps and cause an increase in cost.

For example, Japanese Patent Application No. 63-79733 has been proposed as a device that cannot be easily opened by mischief and that can be produced at low cost.

However, all of these conventional sealing lids are troublesome because they are removed from the main body each time the contents are used, and the lids may be lost in some cases.

(Problems to be Solved by the Invention) As described above, the conventional sealing lid is of a type that is detached from the main body at the time of use.

In such a case, if the lid can be freely bent in a hinged manner, it is possible to avoid troublesome use and to prevent the lid from being lost, which is convenient.

The present invention has been made in view of such a point, and an object of the present invention is to provide a sealing lid which is excellent in sealing performance and can be freely hinged.

[Configuration of the invention]

(Means for Solving the Problems) The present invention relates to a sealing lid applied to a container having an upper opening peripheral edge, wherein a top plate portion and a peripheral top portion which is in close contact with the top of the upper opening peripheral edge portion of the container are provided. A peripheral skirt portion that is integral with the peripheral top portion and extends downward along the outer surface of the upper opening peripheral edge of the container; and A peripheral descending wall connected to the top plate, wherein the linear top plate and the peripheral top on the lid are formed in a continuous thin plate shape as a hinge, and a connecting portion on the hinge is provided. And a notch portion formed in a peripheral descending wall, and a peripheral skirt portion on the hinge portion can be cut freely.

(Operation) The peripheral skirt on the hinge is cut in advance, and then one side of the lid is lifted upward, so that the lid on the lifting side is bent upward at the hinge.

(Example) Hereinafter, an example of the present invention is described with reference to drawings.

1 to 6 are views showing an embodiment of a sealing lid according to the present invention.

In FIG. 1, R indicates a composite container, and C indicates a lid of the present invention applied to the composite container. This composite container R can be used, for example, for storing a household laundry powder detergent, but can of course be used for storing other things.

The main body of the composite container R is constituted by a blank plate 2 shown in FIG. The blank plate 2 has a flat plate shape at first, and the flat plate is wound or bent so that both side edges 2a and 2b are opposed to each other to form a cylindrical shape, thereby forming a body of the composite container. In the illustrated example, the body has a substantially square tubular shape, but may be a square tubular shape other than a square tubular shape, a cylinder, a long cylinder, or the like.

As shown in FIG. 6, a blank plate 2 bent into the shape of the body of the composite container by a guide mold (not shown) or the like has a gap 3 between both side edges 2a and 2b and a bottom portion opened downward. The synthetic resin portions 5a, 5b, and 5c are integrally molded so as to fill the space 4 and cover the peripheral edge of the blank plate upper opening 2c. The state of the composite container R in which the synthetic resin portions 5a, 5b, 5c are integrally formed is as shown in FIG.

In order to produce the composite container R in the state shown in FIG. 1, the blank plate 2 formed in the state shown in FIG. 6 is set in a cavity of a molding die (not shown). The shape of the cavity is the same as the shape of the composite container of FIG. Then, after setting the blank plate 2 in the cavity, the synthetic resin is injected into the cavity, and the injected synthetic resin is integrally attached to the blank plate 2 so as to form the portions 5a, 5b, 5c. The injection molding ends.

Among the synthetic resin portions, the synthetic resin portion 5b is integrally attached to the bottom edge of the blank plate 2 and its inner surface so as to completely cover the bottom opening of the blank plate 2. And the first
There is no gap corresponding to the gap 3 at the center of the side wall of the blank plate opposite to the synthetic resin portion 5a (the portion that fills the gap 3) shown in the figure. Synthetic resin portions 5d of approximately the same width are vertically attached in a strip shape by injection. Inside the synthetic resin portions 5a and 5d, reinforcing and stacking ribs 6a in the vertical direction are integrally formed at the time of injection.

The outer peripheral surface of the blank plate 2 is made of synthetic resin portions 5a, 5b, 5c, 5d.
After the injection molding, the exposed state is maintained as shown in the figure. If necessary, the outer peripheral surface of the blank plate may be partially covered with a synthetic resin portion, or an appropriate coating may be applied to the outer peripheral surface of the blank plate.

As shown in FIG. 1, projections 8a and 8d are integrally formed on the outer surface of the side surface of the synthetic resin portion 5c on the short side of the container by injection molding. The projections 8a and 8d have enlarged heads at their ends. These projections 8a and 8d are for engaging holes at both ends of a flexible resin band-shaped handle 9, and
Is a composite container R as a rotatable handle as shown in FIG.
It is used when holding by hand. The synthetic resin portions 5a and 5d are formed to have a wide width at the protrusions so that the protrusions 8a and 8d can be easily formed. Therefore, the gap 3 is 3a (FIG. 6) at the portion corresponding to the protrusion 8a. It is enlarged as shown.
In the example shown in the figure, the outer surfaces of the synthetic resin portions 5a and 5d at portions where the projections 8a and 8d are present are protruded as shown by reference numeral 11 in FIG. 1, and as much as that shown by 12 in FIG. The inner surface is recessed.

As shown in FIG. 1 and FIG. 6, an upper synthetic resin portion 5c is formed so as to reach above the upper edge 2c of the blank plate 2. The synthetic resin portion 5c forms the upper opening peripheral edge 14 of the composite container R. On the outer surface of the synthetic resin portion 5C, a ridge 15 is integrally formed over substantially the entire circumference. The ridge 15 forms a part of the means for airtight engagement with the lid C. The details will be described later.

By the way, the blank plate 2 can be constituted by a laminated sheet of, for example, a main body made of paper and a synthetic resin layer coated on the inner surface thereof. The synthetic resin layer can be, for example, a polyethylene resin layer. Also, synthetic resin part
5a is made of the same polyethylene resin as the synthetic resin layer.
As a result, the synthetic resin portion 5a adheres well to the blank plate 2 via the synthetic resin layer during injection molding. Synthetic resin part 5
The same applies to the cases of b, 5c, and 5d. Preferably, the outer surface of the synthetic resin portion 5a is flush with the outer surface of the blank plate 2.

The blank plate 2 can be composed of a laminated sheet other than the above. An example of the lamination is, for example, polyethylene (15 μ) / paper (300 g / m ² ) / polyethylene (15 μ) / polystyrene (40 μ).

As shown in FIGS. 1 and 6, a ruled line 19 is formed in the bent or curved portion of the blank plate 2 of the composite container R in the direction of the ridgeline.

By forming the ruled line 19 in this manner, the bending or bending of the blank plate 2 becomes easy and accurate, and the blank plate 2 is bent without generating wrinkles, distortions, etc., and is correctly positioned at a proper position in the molding die. Can be set.

The reinforcing and stacking ribs 6a increase the buckling strength of the composite container including the blank plate, and the bottom resin portion 5b
And to facilitate stacking of containers.

The protrusions 8a and 8d are preferable because they enable the band-shaped handle 9 to be easily attached as described above. Conventionally, as a method of attaching a handle to a paper box, both ends of a handle made of paper tape are attached by bonding, but recently, a method of attaching a handle of plastic tape by riveting has also been used. However, this method also has a complicated manufacturing process, and has problems in price and design. On the other hand, the integral injection molding of the projections 8a and 8d is simple, has high productivity, is excellent in design, and is inexpensive.

Note that the blank plate 2 can be made of the following laminated material. The next order is from front to back.

1. Biaxially oriented polypropylene film (20μ) 2. Polyethylene (15μ) 3. Printing layer 4. Paperboard (450g / m ² ) 5. Polyethylene (20μ) 6. Non-oriented polypropylene film (40μ) In this case, synthetic resin part It is preferable to use polypropylene.

Next, the details of the lid C of the present invention will be described with reference to FIGS.
This will be described with reference to the drawings.

2 is a plan view of the lid C, FIG. 3 is a sectional view taken along the line III-III of FIG. 2, FIG. 4 is a sectional view taken along the line IV-IV of FIG. 2, and FIG. FIG. 5 is a view taken in the direction of the arrow V.

As shown in FIG. 2 to FIG. 5, the lid C is provided on the top plate 21 covering the upper opening of the container R and on the top of the upper opening peripheral edge 14 of the container R which is arranged on the periphery of the top plate 21. Contact top edge
22.

As shown in FIG. 3, the container R
A peripheral skirt portion 25 extending downward along the outer surface of the upper opening peripheral edge 14 is provided integrally with the peripheral top portion 22. Further, a peripheral descending wall 24 extending downward along the inner surface of the upper opening peripheral edge 14 of the container R is provided integrally with the peripheral top part 22, and a lower end of the peripheral descending wall 24 is inclined. It is integrally connected to the top plate 21 via a part 29. The upper opening peripheral edge 14 of the container R is sandwiched between the peripheral descending portion 24 and the peripheral skirt portion 25, and the hermeticity of the container R is maintained.

As shown in FIG. 3, a concave groove 28 is formed on the inner surface of the peripheral skirt portion 25 by a projection 28a, and the protruding ridge 15 of the upper opening peripheral edge 14 enters into the concave groove 28, whereby the container R
The sealability of the horn is further improved. Further, the peripheral skirt portion 25 is provided with a peripheral thin portion 33 on a surface opposite to the concave groove 28, and this portion is particularly easily broken.

In the illustrated embodiment, the peripheral skirt portion 25 is cut off at the center of the short side of the lid C as shown by reference numeral 35 (first embodiment).
Figure). The notch 35 is formed only in a portion below the peripheral thin portion 33, and a pair of tear tabs 36 are provided on both sides of the notch 35 so as to protrude. In addition, a knob 37 is integrally protruded above the notch 35.

In addition, at the four corners of the top plate 21, containers R with lids C
A rib 42 for positioning when stacking is mounted.

That is, on the hinge portion 40, the hinge portion 29 is interrupted by the peripheral edge descending wall 24 and the connecting portion 29, and the top plate portion 21 and the peripheral edge top portion 22 are formed in a continuous thin plate shape. Further, a cutting line 25a connected to the peripheral thin portion 33 is provided on the peripheral skirt portion 25 on the hinge portion 40 as shown in FIG. 5, and the peripheral skirt portion 25 is cut along the peripheral thin portion 33. In this case, the peripheral skirt portion 25 is further continuously cut from the peripheral thin portion 33 along the cutting line 25a.

Next, the operation of the present embodiment having such a configuration will be described.

In order to apply the lid C to the container R, since both are made of an elastic hard synthetic resin, the lid C is pushed down on the container R so as to be in the state shown in FIGS. Resiliently. Thereby, the container R and the lid C come into contact in a sealed state. Further, in this case, the top portion of the upper opening peripheral edge 14 comes into close contact with the peripheral top portion.

When opening the lid C, the pair of tear tabs 36 are pinched by hand and pulled outward. Thereby, the peripheral thin portion 33
The lower peripheral skirt portion 25 has a band shape and is cut from the other portion of the lid C. Then, the peripheral skirt portion 25 cut along the peripheral thin portion 33 is further cut along the cutting line 25a at the hinge portion 40, and then completely cut off from the other portion of the lid at the cutting end 34.

For this reason, in FIG. 2, the peripheral skirt portion 25 on the left side of the cutting end 34 remains completely, and the peripheral skirt 25 on the right side (knob 37 side) of the cutting end 34 is smaller than the peripheral thin portion 33. The lower part will be cut off.

Thus, the peripheral skirt portion 25 below the peripheral thin portion 33
Even when is cut off, the sealing performance is ensured by clamping the upper opening edge 14 of the container R between the peripheral projection 24 of the lid C and the peripheral skirt 25.

Subsequently, the user lifts the lid C by grasping the knob 37, and the right side of the lid C shown in FIG.

As described above, according to this embodiment, the contents can be easily and easily taken out of the container R by bending the lid C upward from the hinge portion 40. As described above, since it is not necessary to remove the lid C from the container R at the time of use, complications at the time of use can be avoided, and loss of the lid can be reliably prevented.

In the above-described embodiment, the example in which the hinge portion 40 is provided on a straight line connecting the opposed long sides of the lid C has been described. However, the present invention is not limited to this. The hinge portion 40 may be provided on a straight line connecting the portions.

〔The invention's effect〕

As described above, according to the present invention, the contents can be easily and easily taken out of the container R by bending the lid upward from the hinge portion. For this reason, since it is not necessary to remove the lid each time it is used, it is possible to avoid complications during use, and it is possible to reliably prevent the lid from being lost.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a composite container together with a lid of the present invention.
FIG. 3 is a plan view showing the lid of the present invention, and FIG. 3 is FIG.
FIG. 4 is a sectional view taken along the line IV-IV in FIG. 2, FIG. 5 is a view taken in the direction of the arrow V in FIG. 2, and FIG. 6 is a perspective view showing a blank plate. R: composite container, C: lid, 14: peripheral edge of upper opening, 15:
... Ridge, 21 ... Top plate part, 22 ... Peripheral top part, 24 ... Peripheral descending wall, 25 ... Peripheral skirt part, 25a ... Cutting line, 28 ...
Groove, 36 ... Tear tab, 40 ... Hinge.

Continued on the front page (72) Inventor Yukio Yoshikawa 17-11 Fujikubo, Miyoshi-cho, Iruma-gun, Saitama (72) Inventor Kyosuke Suzuki 1-1-1, Ichigaya-Kaga-cho, Shinjuku-ku, Tokyo Dai Nippon Printing Co., Ltd. (56 References JP-A-1-254563 (JP, A) JP-A-58-159251 (JP, U) JP-A-56-81853 (JP, U) JP-A-58-159256 (JP, U) (58) Field surveyed (Int. Cl. ⁶ , DB name) B65D 35/00-55/16

Claims (1)

(57) [Claims] 1. A sealing lid provided on a container having an upper opening peripheral edge, wherein a top plate portion, a peripheral top portion in close contact with a top of the upper opening peripheral portion of the container, and an integral with the peripheral top portion are provided. A peripheral skirt portion extending downward along the outer surface of the upper opening peripheral edge of the container, and a peripheral edge formed integrally with the peripheral top portion and extending downward along the inner surface of the upper opening peripheral edge of the container and connected to the top plate portion via a connecting portion; A descending wall, and a top plate portion and a peripheral top portion on an arbitrary straight line on the lid are formed in a continuous thin plate shape as a hinge portion, and a notch portion is formed in the connecting portion on the hinge portion and the peripheral descending wall. A lid for sealing, wherein the lid is formed and a peripheral skirt on the hinge is cuttable.