JP2807051B2 - 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 provides a sealing lid applied to a container having an upper opening peripheral edge, a top plate portion, and a U-shaped cross-section provided to protrude upward from the peripheral edge of the top plate portion. A peripheral skirt portion extending downward along the outer surface of the upper opening peripheral edge of the container, and forming a peripheral thin portion substantially at the center of the peripheral skirt portion; A hinge portion is provided on an arbitrary straight line above, a thin portion is formed on the top plate portion on the hinge portion, and the peripheral portion above the peripheral thin portion of the peripheral skirt portion is cut on the hinge portion. Notch, at least one of the notched surfaces facing the peripheral portion is an inclined notch surface descending toward the other, and a vertical thin portion is formed on the hinge portion below the peripheral thin portion of the peripheral skirt portion. It is a lid for sealing characterized by the above.

(Operation) The peripheral skirt portion below the peripheral thin portion is separated from the vertical thin portion on the hinge portion, and then one side of the lid is lifted, so that one of the inclined cutout surfaces is separated from the other by the hinge portion. The lifting-side lid bends upward until it contacts the notch.

(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 the ends, and these projections 8a and 8d are for engaging the holes 10 at both ends of the band-like handle 9 made of a flexible resin. The handle 9 is used when holding the composite container R by hand as a rotatable handle as shown in FIG. The synthetic resin portions 5a and 5d are formed wide at the protrusions so that the protrusions 8a and 8d can be easily formed. Therefore, at the portion corresponding to the protrusion 8a, the gap 3 is 3a (FIG. 6). 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. 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.

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 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. 5 is a view taken in the direction of the arrow V.

As shown in FIGS. 2 to 5, the lid C has a top plate portion 21 covering the upper opening of the container R, and a peripheral portion having a U-shaped cross section provided on the periphery of the top plate portion 21 so as to protrude upward. 22 (FIG. 3) are integrally formed of a synthetic resin.

As shown in FIG. 3, the peripheral portion 22 is formed along a peripheral top portion 23 in close contact with the top of the upper opening peripheral portion 14 of the container R, and along an inner surface of the upper opening peripheral portion 14 of the container R from inside the peripheral top portion 23. A peripheral skirt portion 25 extending downward from the outside of the peripheral portion 23 along the outer surface of the upper opening peripheral edge 14 of the container R. The upper opening peripheral edge 14 of the container R is sandwiched between the inner peripheral edge 24 and the peripheral edge skirt portion 25, thereby maintaining the hermeticity of the container. A peripheral rib 42 is provided on the surface of the peripheral top 23. In addition, a concave groove 28 is formed on the inner surface of the peripheral skirt portion 25 by a projection 28a,
When the deep ridge 15 of the upper opening peripheral edge 14 enters the concave groove 28, the sealing performance of the container R is improved.

As shown in FIG. 3, a peripheral thin portion 33 is provided substantially at the center of the peripheral skirt portion 25, and this portion is particularly easily broken.

In the embodiment shown, the peripheral skirt 25 is cut off at the center of the short side of the lid C as shown at 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 FIGS. 1 and 2, a hinge portion 40 that allows the lid C to bend freely is provided on a straight line connecting the long sides of the lid C facing each other.

As shown in FIG. 4, in the hinge portion 40, the top plate portion
A thin part 21a is formed on the part 21. In the peripheral skirt portion 25 on the hinge portion 40, a vertical thin portion 43 is formed below the peripheral thin portion 33. Further thin peripheral part 33
The upper peripheral portion 22 is notched at the hinge portion 40,
Of these, one notch surface 47a (the surface on the side of the knob 37) is an inclined notch surface descending toward the other notch surface 47b (FIG. 5). The other cutout surface 47b extends in the vertical direction.

Outside the one inclined cutout surface 47a, there is provided a shielding plate 45 connected to the peripheral skirt portion 25 to hide the cutout surface 47a from the outside. Further, a groove 48 is formed on the inner surface of the shielding plate 45. This groove 48
It engages with a projection 46 provided on the outer surface of the peripheral skirt portion 25 on the other cutout surface 47b side.

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 of the upper opening peripheral edge 14 comes into close contact with the peripheral top portion 23.

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, it is cut along the peripheral thin portion 33, and is completely separated from other portions of the lid.

For this reason, in FIG. 2, the peripheral skirt portion 25 on the left side of the hinge portion 40 is completely left, and the peripheral skirt portion 25 on the right side of the hinge portion 40 (the portion on the side of the knob 37) 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 inner wall 24 of the lid C and the peripheral skirt portion 25.

Subsequently, the user lifts the lid C by gripping the knob 37, whereby the right part of the lid C shown in FIG.

In this case, since one notch surface 47a of the peripheral edge portion 22 is an inclined notch surface descending toward the other notch surface 47b, the one notch 47a is formed on the other notch surface 47b extending in the vertical direction. The lid c can be bent upward until it abuts. When one notch surface 47a contacts the other notch surface 47b,
The projection 46 engages with the groove 48 of the shielding plate 45, whereby the lid c is bent upward and locked in a state.

As described above, according to the present 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.
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, 21:
… Top plate part, 21a …… Thin part, 22 …… Peripheral part, 23 …… Peripheral top part, 24 …… Peripheral inner wall, 25 …… Peripheral skirt part, 33 ……
Peripheral thin part, 36 ... Tear tab, 40 ... Hinge, 43
…… Vertical thin part, 45 …… Shield plate, 47a …… One cutout face, 47b …… The other cutout face.

──────────────────────────────────────────────────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, Ichigaga-cho, Shinjuku-ku, Tokyo Dai Nippon Printing Co., Ltd. (56) References JP-A-1-254563 (JP, A) JP-A-2-138151 (JP, U) JP-A-56-81853 (JP, U) (58) Fields investigated (Int. ⁶ , DB name) B65D 35/00-55/16

Claims (1)

(57) [Claims] 1. A sealing lid provided on a container having a peripheral edge of an upper opening, comprising a top plate portion, and a peripheral portion having a U-shaped cross section provided to protrude upward from a peripheral edge of the top plate portion, The peripheral portion has a peripheral skirt portion extending downward along the outer surface of the upper opening peripheral edge of the container, forming a peripheral thin portion substantially at the center of the peripheral skirt portion, and hinges on an arbitrary straight line on the lid. A thin portion is formed on the top plate portion on the hinge portion, and the peripheral portion above the peripheral thin portion of the peripheral skirt portion is cut out on the hinge portion, and the peripheral portion is opposed to the peripheral portion. A sealing lid, characterized in that at least one of the cutout surfaces is an inclined cutout surface facing down to the other, and a vertical thin portion is formed below the peripheral thin portion of the peripheral skirt portion on the hinge portion.