JP4915964B2 - Container lid - Google Patents

Description

  The present invention relates to a lid for a packaging container, a food storage container, or the like, and particularly to a lid that uses two different kinds of materials in an integrated manner.

A container lid that combines a relatively soft material that is in close contact with the container mouth to ensure the sealing performance of the container and a relatively hard material that maintains the strength of the lid or enhances the appearance is known. ing.
Such a lid is desirably discarded after separating the soft material and the hard material from the viewpoint of recycling of resources.
The lid shown in the following Patent Document 1 forms a weakened groove in a hard material portion, and when discarded, the hard portion is destroyed and separated.
In the lid shown in Patent Document 2, the hard member and the soft member are bonded and integrated with a water-soluble adhesive, and when discarded, the lid is immersed in water to dissolve the adhesive, and the hard member and the soft member are separated. Is.
JP-A-2005-298070 JP 2000-142773 A

Since the lid of Patent Document 1 breaks and separates hard portions, a special instrument for breaking is necessary, and there is a risk of damaging a finger when breaking.
The lid of the above-mentioned Patent Document 2 is a method in which the lid is immersed in water to dissolve the water-soluble adhesive, and the hard member and the soft member are separated. Therefore, the lid cannot be washed with water, and the lid is covered with water. There was a risk that the lid would separate in preparation.
This invention makes it a subject to develop the container lid which can isolate | separate a hard part and a soft part easily, without using an instrument and not attaching to water.

[Claim 1]
In the present invention, a substrate portion that abuts on the top surface of the container mouth portion, an annular fitting wall having a fitting protrusion on an outer peripheral surface standing on the upper surface of the substrate portion, and a downward projection from the lower surface of the substrate portion A soft part having an annular fitting wall to be fitted to the container mouth part and a hard part having a dome shape or a cylindrical shape whose upper part is closed and having a fitting ridge on the inner surface of the peripheral wall, both of the fittings The protrusions are fitted and integrated, and a recess is formed at the lower end of the outer surface of the peripheral wall of the hard part, and the upper surface of the substrate part is exposed in the recess, and the fitting is performed on the inner surface of the recess The container lid is characterized in that no protrusion is formed and a fall-preventing wall that contacts the inner peripheral surface of the fitting wall protrudes downward from the back surface of the hard portion .

  Since the fitting protrusion is not formed on the inner surface of the hollow part, the soft part can be easily removed from the hard part by placing a finger on the edge of the board part exposed in the hollow part and pushing down the edge of the board part downward. Can be detached. Moreover, after separating the soft part and the hard part, it can be easily integrated again.

The material of the soft part is desirably a relatively soft plastic such as polyethylene so as to be in close contact with the container mouth part.
The hard part is made of a material harder than the soft part, and may be a hard plastic such as polypropylene or a metal such as aluminum.

The fitting wall does not need to be completely annular, and may be intermittently formed with a cut.
The portion where the fitting protrusion on the inner surface of the depression is not formed is not necessarily in the whole depression, and for example, the fitting protrusion may be formed inside the left and right ends of the depression. The size (width) of the part where the fitting protrusions are not formed takes into account the ease with which the soft part and the hard part are separated and the required fitting strength between the soft part and the hard part in use. Can be determined.

  By providing the fall-preventing wall, the fitting wall is deformed and inclined inward, the fitting between the hard part and the soft part becomes weak, and the hard part and the soft part can be prevented from being carelessly separated.

[Claim 2 ]
Moreover, this invention is a container lid of Claim 1 by which the part in which the said mounting wall of the said board | substrate part is formed contacts with a part of said hard part, and the deformation | transformation to the upper part of the said part is controlled. is there.

By restricting the upward deformation of the portion of the board portion where the fitting wall is formed, when the lid is attached to the container, the fitting wall is sufficiently fitted to the container mouth, and the lid is not attached. Insufficient sealing can prevent the sealing performance from being impaired.
A specific mode of contact between the portion of the board portion where the fitting wall is formed and the hard portion may be brought into contact with, for example, claims 4 to 5 described later.

[Claim 3 ]
Further, the present invention is the container lid according to claim 2 , wherein a restriction wall protrudes downward from the back surface of the hard part, and a lower end of the restriction wall is brought into contact with the upper surface of the substrate part.

[Claim 4 ]
Further, the present invention is the container lid according to claim 2 , wherein a restriction wall is erected on the upper surface of the substrate part, and an upper end of the restriction wall is brought into contact with the back surface of the hard part.

[Claim 5 ]
The present invention is the container lid according to claim 2 , wherein a restriction wall protrudes downward from the back surface of the hard part, a restriction wall is erected on the upper surface of the substrate, and both restriction walls are in contact with each other.

[Claim 6 ]
The present invention, the substrate peripheral portion of the inner side than HamaSokabe of the substrate portion is formed in a convex downward, one of the container closure of claim 1 to 5 which is deformable upwardly convex It is.

[Claim 7 ]
Further, the present invention is the container lid according to claim 6 , wherein a weakening groove in the circumferential direction is formed at least near the outer peripheral edge of the inner peripheral portion of the substrate so as to facilitate the deformation.

  If the inner peripheral part of the substrate is convex downward and this can be deformed upward, the inner peripheral part of the substrate becomes convex upward when the lid is attached to the container. It can prevent by deform | transforming and can prevent that a lid | cover is pushed back upwards.

According to the present invention, since the hard portion and the soft portion can be easily separated without using a special instrument, members of different materials can be separated and discarded, thereby contributing to recycling.
Further, since no water-soluble adhesive is used, it is easy to integrate the hard part and the soft part once separated again.

Hereinafter, the present invention will be described in detail with reference to the drawings showing examples and reference examples . Figure 1 is a side view of the container closure 1 of the reference example, a substantially vertical section of FIG. 2 is a sectional view along line A-A in FIG. 1, FIG. 3 is a bottom view of the rigid portion 3, the container closure 1 of FIG. 4 embodiment ' FIG. In FIG. 4, the right half of the container lid is omitted.

  A container lid 1 shown in FIGS. 1 to 3 is a lid for a champagne bottle, and is protected so that the lid is not removed from the container by an overcap or a wire (not shown) during distribution. The container lid 1 includes a soft part 2 and a hard part 3. The soft part 2 is made of soft polyethylene resin, and the hard part 3 is made of polypropylene resin harder than the soft part.

The soft part 2 has a substrate part 5, a fitting wall 6, a fitting wall 8, and a regulating wall 11, which are integrally formed.
The substrate portion 5 is a plate-like body having a donut shape in plan view, and its lower surface abuts on the top of the mouth of the container 20 as shown in FIG. Therefore, the outer peripheral shape of the substrate portion in plan view is a shape (circular shape) that substantially matches the outer peripheral shape of the container in plan view.
The fitting wall 6 is erected on the upper surface of the substrate portion 5 in a ring shape along the peripheral edge, slightly inside the peripheral edge. A fitting protrusion 9 is formed on the outer peripheral surface of the fitting wall 6 over the entire circumference.
The fitting wall 8 is annularly projected downward from the lower surface of the substrate portion 5, and a bottom plate 8a is provided at the lower end. Moreover, since the board | substrate part 5 does not exist in the inner side of the fitting wall 8, and has a hole, the internal space of the fitting wall 8 can be utilized as a secondary storage space. The fitting wall 8 is fitted into the mouth of the container 20 as shown in FIG.
The regulation wall 11 is erected in an annular shape from the upper surface of the portion where the mounting wall 8 of the substrate portion 5 is formed.

The hard part 3 has a substantially dome shape, and its plan view outline is substantially the same as the plan view outline of the soft part 2. The size of the hard part 3 in plan view is desirably the same as or slightly smaller than that of the soft part (preferably about 0 to 3 mm).
One recessed portion 4 is formed at the lower end of the outer surface of the peripheral wall of the hard portion 3. The size (width) of the indented portion 4 is suitably about 1 to 2 cm so that the thumb can enter. Although the fitting protrusion 9 is formed in the lower end part of the internal peripheral surface of a surrounding wall, the inner side in which the hollow part 4 was formed becomes the part 10 in which the fitting protrusion is not formed.
A regulating wall 12 is formed so as to protrude downward from the back surface of the hard portion 3. A downward stepped portion 12 a is formed on the outer peripheral portion of the restriction wall 12.

The soft part 2 and the hard part 3 are integrated as shown in FIG. Regarding the integration, the positioning of the soft portion 2 and the hard portion 3 is not necessary, and the soft portion 2 and the hard portion 3 may be integrated at any relative angle. This is because the fitting protrusion 9 is not formed on the inner surface of the recess 4, so that there is no problem in separation regardless of the positional relationship between the soft portion 2 and the hard portion 3.
The container lid of the present invention opens and closes the container mouth by attaching and detaching to and from the container in such an integrated state.
In the integrated state, the fitting ridge 7 of the soft part 2 and the fitting ridge 9 of the hard part 3 are fitted to each other, and the soft part 2 and the hard part 3 are not separated during normal use. .
In the dent part 4, the upper surface of the end part of the substrate part 5 is exposed.
Further, since the restriction wall 12 of the hard part 3 is fitted into the restriction wall 11 of the soft part 2 and the stepped part 12 a is in contact with the upper surface of the restriction wall 11, the container lid 11 is pushed into the mouth of the container 20. When mounting, the upward deformation of the portion of the board portion 5 where the mounting wall 8 is formed is restricted, and the mounting wall is sufficiently fitted into the container mouth portion to ensure sealing performance.

  In order to separate the soft part 2 and the hard part 3, the user holds the hard part 3 in his / her hand, puts his / her finger on the upper surface of the end of the substrate part 5 exposed in the recessed part 4, and pushes it down. Since the fitting protrusion 9 is not formed in the portion, the soft portion 2 and the hard portion 3 begin to separate from this portion, and then the fitting protrusions 7 and 9 are gradually disengaged, finally The soft part 2 and the hard part 3 can be completely separated.

  A container lid 1 ′ shown in FIG. 4 is also a lid for a champagne bottle and includes a soft portion 2 and a hard portion 3. The soft part 2 is made of soft polyethylene resin, and the hard part 3 is made of polypropylene resin harder than the soft part.

The soft part 2 has a substrate part 5, a fitting wall 6 and a fitting wall 8, which are integrally formed.
The substrate unit 5 has a disk shape, and the lower surface thereof abuts on the top surface of the mouth of the container 20.
The fitting wall 6 has the same configuration as that of the above-described reference example (container lid 1).
The fitting wall 8 is annularly projected downward from the lower surface of the substrate portion 5, and the lower end is in an open state.

The hard portion 3 has a substantially dome shape, and the outer shape in plan view is substantially the same circular shape as the outer shape in plan view of the soft portion 2.
The recessed portion 4, the fitting protrusion 9, and the portion 10 where the fitting protrusion is not formed have the same configuration as that of the above-described reference example (container lid 1).
A regulating wall 12 is formed so as to protrude downward from the back surface of the hard portion 3. In the integrated state, the lower end of the restriction wall 12 contacts the upper surface of the portion of the board portion 5 where the fitting wall 8 is formed, and the upward deformation of the portion is restricted. Note that the lower end of the regulation wall 12 and the substrate portion 5 do not need to be in complete contact with each other, and even if there is a slight gap (for example, 0.3 mm or less), the substrate portion 5 is in a state of being slightly deformed upward. Any further deformation may be prevented.
Further, a fall-preventing wall 13 is formed so as to protrude downward from the back surface of the hard portion 3. In the integrated state, the outer peripheral surface of the fall-preventing wall 13 is in contact with the inner peripheral surface of the fitting wall 6. Thereby, it can prevent that the fitting wall 6 inclines inside, and can prevent that a hard part and a soft part separate carelessly.

  When the substrate inner peripheral portion 5b, which is a portion inside the fitting wall 8 of the substrate portion 5, is formed to protrude downward and the internal pressure in the container increases, as shown by a two-dot chain line in FIG. The peripheral part 5b is deformed upward. Since the circumferential weakening groove 14 is formed in the vicinity of the outer peripheral edge of the substrate inner peripheral portion 5b, when the internal pressure of the container rises, the substrate inner peripheral portion 5b easily deforms upwardly, and the container internal pressure Absorbs and eases the rise.

The container in the present invention may be made of any material such as glass, ceramic, metal, and the use of the container is not limited to carbonated beverage bottles, and may be of any use.
The planar shape of the container mouth portion and the container lid is not limited to the circular shape in the embodiment, and may be a quadrilateral shape.

3 is a side view of the container lid 1. FIG. It is the sectional view on the AA line in FIG. 3 is a bottom view of a hard part 3. FIG. It is a schematic longitudinal cross-sectional view of the container lid 1 '.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Container lid 2 Soft part 3 Hard part 4 Recessed part 5 Substrate part 5b Board inner peripheral part 6 Fitting wall 7 Fitting protrusion 8 Fitting wall 9 Fitting protrusion 10 Part in which the fitting protrusion is not formed 11 Restriction wall 12 Restriction wall 13 Fall wall 14 Weakening groove

Claims (7)

A substrate part that contacts the top surface of the container mouth part, an annular fitting wall having a fitting protrusion on the outer peripheral surface standing on the upper surface of the substrate part, and a container mouth part projecting downward from the bottom surface of the substrate part A soft part having an annular fitting wall to be fitted;
A dome shape or a cylindrical shape whose upper part is closed, and a hard part having a fitting protrusion on the inner surface of the peripheral wall,
Both the fitting protrusions are fitted together and integrated,
A recess is formed at the lower end of the outer peripheral surface of the hard portion, and the upper surface of the substrate portion is exposed in the recess,
The fitting protrusion is not formed on the inner surface of the recess ,
A container lid , wherein a fall-preventing wall that comes into contact with the inner peripheral surface of the fitting wall protrudes downward from the back surface of the hard portion . The container lid according to claim 1, wherein a portion of the base plate portion on which the fitting wall is formed contacts a part of the hard portion, whereby the upward deformation of the portion is restricted. The container lid according to claim 2 , wherein a restriction wall protrudes downward from the back surface of the hard part, and a lower end of the restriction wall is brought into contact with the upper surface of the substrate part. The container lid according to claim 2 , wherein a restriction wall is erected on an upper surface of the substrate part, and an upper end of the restriction wall is brought into contact with a back surface of the hard part. The container lid according to claim 2 , wherein a regulation wall protrudes downward from the back surface of the hard part, a regulation wall is erected on the upper surface of the substrate, and both regulation walls are in contact with each other. The container lid according to any one of claims 1 to 5 , wherein an inner peripheral portion of the substrate on the inner side of the mounting wall of the substrate portion is formed so as to protrude downward, and this can be deformed to protrude upward. The container lid according to claim 6 , wherein a circumferential weakening groove is formed at least near the outer peripheral edge of the inner peripheral portion of the substrate so as to facilitate the deformation.

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