JP2820449B2 - 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 is applied to a container having an upper opening peripheral edge, a top plate portion, a peripheral portion provided on a peripheral edge of the top plate portion, and an upper portion of the container from a lower surface of the peripheral portion. A sealing lid comprising: a peripheral projecting wall protruding downward along an inner surface of an opening peripheral edge; and a peripheral skirt portion extending downward from an outer edge of the peripheral edge along an outer surface of an upper opening peripheral edge of the container. A hinge portion is provided on the straight line of, and a thin portion is provided on the top plate portion on the hinge portion,
A thin flat portion is formed in the peripheral portion, and a notch or a thin portion is formed in the peripheral protruding wall on the hinge portion, and the peripheral thin portion passes through the hinge portion along the peripheral edge of the peripheral skirt portion. A sealing portion having a thin portion formed on at least an upper portion of the peripheral skirt portion on the hinge portion.

(Operation) According to the present invention, the lower part of the peripheral skirt is cut off from the upper part along the peripheral thin part. Next, by lifting one end of the lid, the thin part of the upper part of the peripheral skirt part on the hinge part and the thin part of the peripheral protruding wall are broken, and one end side of the lid is bent upward from the hinge part.

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

1 to 8 show one embodiment of the 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 is initially formed on a flat plate, and this 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. 8, 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. 8 is set in the 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 5b, vertical reinforcing and stacking ribs 6a 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,
Also, an appropriate coating can be applied to the outer peripheral surface of the blank plate.

As shown in FIG. 1, protrusions 8a and 8d are integrally formed on the outer surface of the synthetic resin portion 5c on the side of the short side of the container by injection molding, and have an enlarged head at the tip. The projections 8a and 8d are for engaging the holes 10 at both ends of the flexible resin band-shaped handle 9 shown in FIG. 9, and the handle 9 can be rotated as shown in FIG. It is used when holding the composite container R by hand as a simple handle. The synthetic resin portions 5a and 5d are formed to be wide at the projections so that the projections 8a and 8d can be easily formed. Therefore, the gap 3 is 3a (FIG. 8) at the portion corresponding to the projection 8a. It is enlarged as shown. In the example shown in the drawing, 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. 8, 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 8, 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 plastic tape handle 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. 6 is a sectional view taken along the line VV, FIG.
FIG. 7 is a sectional view taken along the line VII in FIG.

As shown in FIGS. 2 to 7, the lid C includes a top plate portion 21 that covers the upper opening of the container R, and a peripheral portion 22 (third portion) provided on the periphery of the top plate portion 21 and curved upward. (Fig. 1) and are integrally formed of a synthetic resin.

As shown in FIG. 3, a peripheral projecting wall 24 projecting downward along the inner surface of the upper opening peripheral edge 14 of the container R is provided on the lower surface of the peripheral edge 22. A peripheral skirt portion 25 extending downward along the outer surface of the upper opening peripheral edge 14 of the R is provided. The upper opening peripheral edge 14 of the container R is sandwiched between the peripheral protruding wall 24 and the peripheral skirt portion 25 to maintain the hermeticity of the container.

A plurality of reinforcing ribs 41 for reinforcing the peripheral protruding wall 24 are provided inside the peripheral protruding wall 24 at predetermined intervals in the peripheral direction. Further, on the outer side of the peripheral protruding wall 24, a plurality of positioning ribs 42 which are in contact with the upper end of the upper opening peripheral edge 14 and position the container R and the lid C at predetermined intervals in the peripheral direction (the same number as the reinforcing ribs 41). ) Is provided.

On the other hand, an inward protruding edge 27 is formed on the inner surface of the peripheral skirt portion 25, and a concave groove 28 is formed above the protruding edge 27. In the state shown in FIG. 3 in which the lid C is fitted to the container R, the positioning rib 42 is in close contact with the top of the peripheral edge 14 of the upper opening of the container, and projects inward from the lower surface of the ridge 15 of the container. The rim 27 is pressed tightly. Further, the ridge 15 enters the inside of the concave groove 28. By performing the sealing operation in this manner, the internal space of the container R is completely sealed from the outside.

As shown in FIG. 3, a thin peripheral portion 33 is provided above the inwardly protruding edge 27, and this portion is particularly easily broken. In this embodiment, the thin portion is provided in the groove 28.

In the embodiment shown, 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 as shown in FIG. 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.

As shown in FIG. 1 and FIG. 2, a hinge portion 40 that allows the lid C to freely bend is provided on a direct connection between the opposing long sides of the lid C.

As shown in FIG. 5, in the hinge portion 40, the top plate portion
A thin part 21a is formed on the part 21. Next, the peripheral portion 22 of the hinge portion 40 will be described with reference to FIGS.

As shown in FIG. 4 and FIG. 6, flat portions 22a and 22b having thin portions are provided at the hinge portion 40 on the peripheral edge portion 22. The lid C is bent at the boundary between the thin portion 21a of the top plate portion 21 and the flat portions 22a and 22b of the peripheral portion 22.

In addition, as shown in FIG. 4, in one flat portion 22a of the hinge portion 40, a notch reaching the flat portion 22a is provided in advance in the peripheral edge protruding wall 24, and in a portion above the peripheral skirt portion 25,
A thin portion 25a is formed in the vertical direction. This thin part 25a
Can be easily torn by hand. Further, a curved (R-shaped) thin portion 43 (FIG. 7) is formed below the thin portion 25a of the peripheral skirt portion 25.

Further, as shown in FIG. 6, in the other flat portion 22b of the hinge portion 40, the peripheral projecting wall 24 has a thin portion 2 in the vertical direction.
4a is formed, and a thin portion 25b is similarly formed in the upper part of the peripheral skirt portion 25 in the vertical direction. The thin portion 24a of the peripheral protruding wall and the thin portion 2 of the peripheral skirt portion 25
All 5b can be easily torn by hand. In addition, the thin portion 25b of the peripheral skirt portion 25
In a lower portion, a thin portion 44 extending in the vertical direction is formed. In addition, as shown in FIG. 2, the peripheral portion 22 includes flat portions 22a and 22b and flat portions 22c and 2b from the viewpoint of aesthetic appearance.
2d is formed.

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 that the state shown in FIG. Fitting. Thereby, the inwardly projecting edge 27 of the lid is engaged with the lower side of the ridge 15 of the container, and the lid does not come off the container,
Further, the container R and the lid C come into contact with each other in a sealed state.
Further, in this case, the upper end of the upper opening peripheral edge 14 abuts on the positioning rib 42 to position the container R and the lid C.

Such a sealed state is maintained during normal handling because the inwardly projecting edge 27 has sufficient strength. However, if the lid C is forcibly removed, the peripheral thin portion 33
Will be cut off first, so it will be immediately apparent that the lid has been opened due to mischief.

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 cut peripheral skirt portion 25 is curved and separated by the curved thin portion 43 at one flat portion 22a of the hinge portion 40, and the other flat portion 22a is bent.
At b, it is cut off in the vertical direction by a thin portion 44 extending in the vertical direction.

Accordingly, in FIG. 2, the peripheral skirt portion 25 on the left side of the hinge portion 40 completely remains, and is lower than the peripheral thin portion 33 of the peripheral skirt portion 25 on the right side (the knob 37 side) of the hinge portion 40. The side part will be cut off from the upper part.

Even when the peripheral skirt portion 25 is cut off in this manner, the sealing performance is ensured by clamping the upper opening edge 14 of the container R between the peripheral ridge portion 24 of the lid C and the peripheral skirt portion 25. .

Subsequently, the thin portion 25a of the peripheral skirt portion 25 is torn at one flat portion 22a shown in FIG. 4 by holding the knob 37 and lifting the lid C upward. At the same time, at the other flat portion 22b shown in FIG.
The thin portion 25b of 5 and the thin portion 24a of the peripheral projecting portion 24 are torn. Then, as shown in FIG.
The right part is bent upward by the knob 37 from the boundary.

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, by lifting one end of the lid, the thin part of the upper part of the peripheral skirt part on the hinge part and the thin part of the peripheral protruding wall are broken, and one end side of the lid is upward with the hinge part as a boundary. Bend. When the lid is bent in this manner, only the upper part of the peripheral skirt portion needs to be broken through the thin portion, so that the operation of breaking the peripheral skirt portion is facilitated.

[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.
4 is a sectional view taken along the line IV-IV in FIG. 2, FIG. 5 is a sectional view taken along the line VV in FIG. 2, FIG. 6 is a sectional view taken along the line VI-VI in FIG.
FIG. 7 is a view taken in the direction of the arrow VII in FIG. 2, FIG. 8 is a perspective view showing the blank plate, and FIG. 9 is a perspective view of the handle. R ... composite container, C ... lid, 2 ... blank plate, 2c ...
Blank plate top opening, 3 ... gap, 4 ... bottom, 5a, 5b,
5c, 5d: Synthetic resin part, 6a: Reinforcement and stacking rib, 8a, 8b: Protrusion, 9: Band-shaped handle, 14: Upper opening periphery, 15: Ridge, 19: Ruled line, 21 ...... Top plate part, 21a
...... Thin part, 22 ... Peripheral part, 22a, 22b, 22c, 22d ... Flat part, 24 ... Peripheral protruding wall, 24a ... Thin part, 25 ... Peripheral skirt part, 25a, 25b ... Thin Part, 27 …… Inward protruding edge, 2
8 ... groove, 36 ... tear tab, 40 ... hinge, 43
…… A curved thin part, 44 …… A vertical thin part.

──────────────────────────────────────────────────続 き 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-Kagacho, Shinjuku-ku, Tokyo Dai Nippon Printing Co., Ltd. (56) References JP-A-1-254563 (JP, A) JP-A-3-15359 (JP, U) JP-A-51-10101 (JP, U) (58) Fields investigated (Int. Cl. ⁶ , DB name) B65D 39/00-55/16

Claims (1)

(57) [Claims] The present invention is applied to a container having an upper opening peripheral edge, a top plate portion, a peripheral portion provided on a peripheral edge of the top plate portion, and a lower surface of the peripheral portion extending downward along the inner surface of the upper opening peripheral edge of the container. In a sealing lid having a projecting peripheral projecting wall and a peripheral skirt extending downward from an outer edge of the peripheral portion along an outer surface of an upper opening peripheral edge of a container, a hinge portion is provided on an arbitrary straight line on the lid. A thin portion on the top plate portion on the hinge portion,
A thin flat portion is formed in the peripheral portion, and a notch or a thin portion is formed in the peripheral protruding wall on the hinge portion, and the peripheral thin portion passes through the hinge portion along the peripheral edge of the peripheral skirt portion. A sealing portion having a thin portion formed on at least an upper portion of the peripheral skirt portion on the hinge portion.