JP2021054430A - Cap for bottle mouth - Google Patents

Abstract

To create a cap for a bottle mouth that can suppress odor transfer with a simple configuration and improves the design property of the appearance.SOLUTION: A cap 1 for a bottle mouth has an outer lid body A comprising an upper lid portion 2 in which a seal cylinder portion 2C is connected to an inner edge of a through hole 2B formed on a top wall 2A and a sealing cylinder portion 3 separably provided with respect to an outer peripheral wall 5 that is hung on an outer peripheral edge of the upper lid portion 2, and an inner lid body B comprising a top surface portion 15 that closes the through hole 2B and an inner plug portion 16 that is hung on the top surface portion 15 and inserted into the seal cylinder portion 2C. The inner lid body B is made of PET resin. A seal portion 13 which is tightly fitted to an inner peripheral surface of an upper end of a bottle mouth portion 21 is formed on an outer peripheral surface of the seal cylinder portion 2C. A gap 18 is arranged below the seal portion 13 and at a portion where an outer peripheral surface of the inner plug portion 16 and an inner peripheral surface of the bottle mouth portion 21 face each other.SELECTED DRAWING: Figure 3

Description

The present invention relates to a bottle mouth cap attached to a bottle mouth portion of a bottle body.

As prior art related to the bottle mouth cap, the following Patent Document 1 describes a bottle stopper provided with an inner stopper attached to the bottle mouth portion and a side portion covering the bottle mouth portion.
The bottle stopper described in Patent Document 1 is provided from a notch 21 provided in the side portion 20 upward from the lower end portion, an orbiting portion 23a that orbits along the outer periphery of the side portion 20, and the orbiting portion 23a. A thin-walled portion 23 in which inclined portions 23b formed upward are alternately and continuously formed, and a separated thin-walled portion 15 that circulates along the outer periphery of the side portion 20 at the boundary between the head portion 12 and the side portion 20. , An engaging portion 24 provided on the inner side surface of the side portion 20 and locked to the annular engaging portion A2 of the bottle A, and a gap portion provided in the engaging portion 24 corresponding to the position where the thin-walled portion 23 is provided. The outer shape of the edge portion 14 of the head portion 12 is formed to be larger than the outer shape of the bottle mouth portion A1. Then, an engaging portion 24 projecting in the inner diameter direction is integrally projected on the inner side surface above the side portion 20, and when the inner plug 10 is attached to the bottle mouth portion A1 after filling the bottle A with the content liquid. Since the engaging portion 24 engages with the annular engaging portion A2 provided on the outer peripheral surface of the bottle mouth portion A1, the bottle A can be closed.
Further, when opening the bottle stopper, the picking piece 22 is picked with a finger and pulled up in the circumferential direction, and the thin-walled portion 23 and the separated thin-walled portion 15 continuously formed from the cut portion 21 are broken, and the inner stopper 10 is opened. Since the inner plug 10 is exposed by separating the inner plug 10 and the side portion 20, and only the inner plug 10 is attached to the bottle A, the inner plug 10 can be easily opened and re-closed (recapped). Is possible.
The inner plug 10 has a structure in which the bottle mouth portion A1 is sealed by fitting the stopper body 11 to the bottle mouth portion A1, and the stopper body 11 is molded from a synthetic resin such as low-density polypropylene.

Japanese Unexamined Patent Publication No. 2017-197196

Generally, the stopper fitted to the mouth of the bottle may come into direct contact with the content liquid such as sake contained in the bottle, so that the odor of the content liquid (alcohol odor, etc.) is emitted from the stopper. It is difficult to suppress the transfer of odor. In this regard, the bottle mouth cap described in Patent Document 1 has a configuration in which the lower portion of the stopper 11 is wrapped with aluminum foil or the like, and by adopting this configuration, it is possible to suppress odor transfer. It has become.
However, in order to wrap the lower part of the stopper body with aluminum foil or the like, it is necessary to perform it in a separate process after molding the bottle mouth cap, so that it is difficult to simplify the manufacturing process and reduce the cost associated therewith. There is.
Further, in recent years, there has been a demand for the development of a cap for a bottle mouth having an excellent design that gives a luxurious appearance.

An object of the present invention is to create a bottle mouth cap that enables suppression of odor transfer with a simple configuration and improves the appearance design in order to solve the above-mentioned problems in the prior art. ..

Among the means for solving the above problems, the main means of the present invention is
An outer lid having an upper lid portion in which a seal cylinder portion is continuously provided on the inner edge of a through hole formed in the top wall and a sealing cylinder portion provided separably from the outer peripheral wall suspended on the outer peripheral edge of the upper lid portion. With the body
A bottle mouth cap composed of a top surface portion that closes the through hole and an inner lid body having an inner plug portion that is hung on the top surface portion and inserted into the seal cylinder portion.
The inner lid is made of PET resin,
On the outer peripheral surface of the seal cylinder portion, a seal portion that is tightly fitted to the inner peripheral surface of the upper end of the bottle mouth portion is formed, and below the seal portion, the outer peripheral surface of the inner plug portion and the inner peripheral surface of the bottle mouth portion are formed. It is characterized in that a gap is arranged in the facing portion.
The main means of the present invention has a simple structure of two parts, an outer lid body and an inner lid body made of PET resin, and the seal portion provided on the seal cylinder portion on the outer lid body side is the upper end of the bottle mouth portion. Since it is tightly fitted to the inner peripheral surface and the inner plug on the inner lid side is separated from the inner peripheral surface of the bottle mouth to maintain a non-contact state, for example, the contents such as alcohol odor and vinegar odor. It can be achieved to suppress the odor transfer of the liquid odor directly to the inner plug portion.

Further, another means of the present invention is obtained by adding a means that the outer lid body is made of a synthetic resin material softer than the inner lid body in addition to the above-mentioned main means.
In the above means, the seal portion sandwiched between the outer peripheral surface of the inner plug portion and the inner peripheral surface of the bottle mouth portion can be firmly pressed against the inner peripheral surface of the bottle mouth portion. An improvement in the degree of sealing can be achieved.

Further, in another means of the present invention, the above means is provided with a design in which the inner lid is transparent and the outer lid and the inner lid face each other and are in contact with each other with characters, figures, symbols or colors or a combination thereof. It is the addition of the means that it has been done.
In the above means, one or both of the lower surface of the top surface portion and the upper surface of the top wall, or one or both of the outer peripheral surface of the inner plug portion (outer peripheral surface of the recess) and the inner peripheral surface of the seal cylinder portion, or the radial outer side of the top surface portion. By designing one or both of the end face of the inner wall and the inner peripheral wall located on the radial outer side of the top wall facing the end face, the design can be visually recognized through the top surface of the inner lid. Therefore, it is possible to achieve an improvement in the appearance of the design.

Further, another means of the present invention is obtained by adding a means that the inner lid body is used as an insert material of the outer lid body to any of the above means.
The above means can be easily manufactured at low cost.

In the present invention, it is possible to suppress the transfer of the odor of the content liquid such as sake to the inner plug portion constituting the inner lid body.
In addition, it has an excellent appearance design and can be used as a high-class bottle mouth cap.

As an embodiment of the present invention, it is a front view of a bottle mouth cap showing a state before the locked portion is folded back. It is a front view of the bottle mouth cap which shows the state after the locked part is folded back. It is a half cross-sectional view of the bottle mouth cap which shows the state attached to the bottle mouth part.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
The bottle mouth cap 1 of the present invention includes, for example, a 1-square bottle (1800 ml bottle) or a No. 4 bottle (720 ml bottle) containing sake such as sake, shochu or wine, and other content liquids (for example, soy sauce, vinegar, etc.). It is attached to the bottle mouth portion 21 of the glass bottle body 20 and is for sealing and sealing the inside of the bottle body 20. The bottle body 20 is not limited to glass, and may be made of ceramic, metal, or the like.
In the following description, the vertical direction along the container axis O of the bottle body 20 is the axial direction, the direction orthogonal to the container axis O is the radial direction, and the direction of orbiting around the container axis O is the circumferential direction.

As an embodiment of the present invention, FIG. 1 is a front view of a bottle mouth cap showing a state before the locked portion is folded back, and FIG. 2 is a front view of the bottle mouth cap showing a state after the locked portion is folded back. FIG. 3 is a half cross-sectional view of a bottle mouth cap showing a state of being attached to the bottle mouth portion.

The bottle mouth cap 1 of the present invention can be roughly classified into an outer lid body A having an upper lid portion 2 and a sealing cylinder portion 3 connected to the upper lid portion 2 and a through hole 2B provided in the upper lid portion 2. It is formed by having an inner lid body B including an inner plug portion 16 to be inserted into.
As shown in FIG. 3, in the upper lid portion 2 forming a part of the outer lid body A, the top wall 2A is recessed, and a through hole 2B penetrating in the axial direction is formed in the center thereof. At the inner edge of the through hole 2B, a seal cylinder portion 2C extending downward in the axial direction and formed in a cylindrical shape is continuously provided. A plurality of vertical ribs 2a are arranged on the outer outer peripheral surface of the seal cylinder portion 2C in the radial direction with a predetermined interval in the circumferential direction. The axial length dimension of the vertical rib 2a is shorter than the axial length dimension of the seal cylinder portion 2C, and the lower end of the vertical rib 2a can come into contact with the upper end of the bottle mouth portion 21. The portion of the seal cylinder portion 2C located below the lower end of the vertical rib 2a is formed to have a size slightly larger than the inner peripheral surface of the bottle mouth portion 21, and is formed on the upper inner peripheral surface of the bottle mouth portion 21. It functions as a sealing portion 13 that seals by tightly fitting to.

Further, an outer peripheral wall 5 is provided on the outer peripheral edge of the top wall 2A, and the outer peripheral wall 5 is composed of a plurality of vertical grooves, and a knurl 5a that exerts a non-slip effect in the circumferential direction is formed.
Below the outer peripheral wall 5 constituting the upper lid portion 2, a sealing cylinder portion 3 formed by forming a side wall portion 6 in a cylindrical shape is continuously provided. Between the outer peripheral wall 5 on the upper lid portion 2 side and the side wall portion 6 on the sealing cylinder portion 3 side, a horizontally weakened portion 11 formed so as to be breakable via a thin wall portion 11a is provided around the circumference. By breaking the horizontal weakening portion 11, the sealing cylinder portion 3 can be separated from the upper lid portion 2.

As shown in FIGS. 1 and 2, the sealing cylinder portion 3 constituting the other part of the outer lid body A is provided with a window hole 7 penetrating in the radial direction at a central position in the axial direction. .. The window holes 7 have a horizontal band shape (rectangular shape having long sides in the circumferential direction), and a plurality of window holes 7 are formed at predetermined intervals in the circumferential direction.
An inclination weakening portion 12 is formed in the sealing cylinder portion 3. The inclination weakening portion 12 is a first inclination weakening portion 7 arranged in an inclined manner between a corner portion on one end side of the upper edge portion 7a in the circumferential direction and the horizontal weakening portion 11 of any one window hole 7. The second inclined weakening portion 12b is arranged in an inclined manner between the portion 12a and the corner portion on one end side of the lower edge portion 7b in the circumferential direction and the notch portion 10 formed at the lower end of the sealing cylinder portion 3. It is composed of and. Both the first inclination weakening portion 12a and the second inclination weakening portion 12b are formed so as to be fractureable through the thin-walled portion, and both are inclined in the same direction (in the directions of rising to the right in FIGS. 1 and 2). It is set. A knob portion 6a formed in a convex curved shape is provided at a portion of the lower end of the side wall portion 6 at a lower position of the second inclination weakening portion 12b and continuous from the notch portion 10.

Further, in the upper edge portion 7a of each window hole 7, a locked portion 8 projecting in a convex curved surface shape toward the outside in the radial direction is continuously provided via a connecting portion 9 formed so as to be elastically deformable, and is sealed. It is arranged so as to be folded back toward the inner peripheral surface of the side wall portion 6 forming the tubular portion 3. As shown in FIG. 3, the locked portion 8 is folded back toward the inner peripheral surface of the sealing cylinder portion 3, and in this state, the locking portion 22 is provided around the outer peripheral surface of the bottle mouth portion 21 in a concave curved shape. By being locked to the bottle mouth portion 21, the movement of the bottle mouth cap 1 with respect to the bottle mouth portion 21 in the axial direction is restricted. The convex curved surface-shaped locked portion 8 and the concave curved surface-shaped locking portion 22 are formed with the same radius of curvature.

As shown by the alternate long and short dash line in FIG. 3, the inner peripheral surface of the locked portion 8 facing inward in the radial direction before folding back is the inner peripheral surface of the side wall portion 6 in a state of facing inward in the radial direction after folding back. Close to the surface. Then, the end portion 8a of the locked portion 8 which was located axially lower than the connecting portion 9 before folding back is located at a position axially above the connecting portion 9 after folding back, and is located on the side wall portion 6. Of these, it is possible to contact the stepped portion 6b provided on the inner peripheral surface near the lower end of the horizontal weakened portion 11, and further upward movement in the axial direction is restricted.

The inner lid body B is, for example, a transparent member injection-molded using PET (Polyethylene terephthalate) resin, and is placed on the top wall 2A on the upper lid portion 2 side to close the through hole 2B. It has a surface portion 15 and a cylindrical inner plug portion 16 that is hung on the lower surface of the top surface portion 15 and has a cavity formed therein, and is integrally formed. At the upper position of the outer peripheral surface on the outer side in the radial direction of the inner plug portion 16, a recess 17 in which the inner peripheral surface on the inner side in the radial direction of the seal cylinder portion 2C on the upper lid portion 2 side is fitted is provided around. Further, the outer peripheral surface of the inner plug portion 16 in the radial direction is formed in a reduced diameter shape in which the diameter dimension gradually decreases from the lower end of the recess 17 toward the lower end of the inner plug portion 16.

The upper lid portion 2 and the sealing cylinder portion 3 constituting the outer lid body A are injection-molded using a synthetic resin material such as low-density polypropylene, and at that time, the inner lid portion B made of PET resin is inserted as an insert material. The bottle mouth cap 1 in which the upper lid portion 2 of the outer lid body A and the inner lid body B are integrated is formed by insert molding. Alternatively, the outer lid A made of synthetic resin such as low-density polypropylene (upper lid 2 and the sealing cylinder 3) and the inner lid B made of PET resin are separately injection-molded, and the upper lid on the outer lid A side is formed. The bottle mouth cap 1 may be integrated by inserting and assembling the inner plug portion 16 on the inner lid body B side into the through hole 2B of the portion 2.

As shown in FIG. 3, when the inner lid B is attached to the upper lid 2 on the outer lid A side, the lower end of the recess 17 formed in the inner plug 16 engages with the lower end of the seal cylinder 2C. Since it is in the fitted state, the recess 17 has a function of preventing the inner plug portion 16 from coming off from the through hole 2B.

In order to attach the bottle mouth cap 1 having the above configuration to the bottle mouth portion 21, first, the locked portion 8 and the sealing cylinder portion 3 are configured while elastically deforming the connecting portion 9 using a jig or the like. Push back toward the inside of the side wall portion 6. As a result, the locked portion 8 is set to face inward in the radial direction, and the end portion 8a is set to be located above the connecting portion 9 (see FIG. 3).

Next, the bottle mouth cap 1 is stoppered, and the inner lid body B is fitted into the bottle mouth portion 21. At this time, since the lower end of the vertical rib 2a on the upper lid portion 2 side abuts on the upper end of the bottle mouth portion 21, the further downward movement of the bottle mouth cap 1 with respect to the bottle mouth portion 21 is restricted. At the same time, the locked portion 8 invades the locking portion 22 while sliding on the outer peripheral surface of the bottle mouth portion 21, and the locking is completed, and the bottle mouth cap 1 moves upward with respect to the bottle mouth portion 21. Is regulated. At this time, the seal portion 13 which is the lower end of the seal cylinder portion 2C of the upper lid portion 2 is tightly fitted in the bottle mouth portion 21 to seal the bottle mouth portion 21. The work of attaching the bottle mouth cap 1 to the bottle mouth portion 21 is performed using a stoppering machine (not shown).

Here, the inner lid portion B made of a synthetic resin material such as PET resin and the glass bottle mouth portion 21 are both formed of a soft synthetic resin material (for example, low-density polypropylene or the like). It is harder than. Therefore, the lower end (seal portion 13) of the seal cylinder portion 2C made of a soft synthetic resin material is sandwiched between the outer peripheral surface of the inner plug portion 16 and the inner peripheral surface of the bottle mouth portion 21 in the radial direction. Since it becomes easy to elastically deform toward the outside and the seal portion 13 can be firmly pressed against the inner peripheral surface of the bottle mouth portion 21, it is possible to improve the degree of sealing by tightly fitting the seal portion 13. Is.

Further, the PET resin has a function of suppressing odor transfer, but since the outer peripheral surface of the lower end of the inner plug portion 16 made of PET resin is formed in a reduced diameter shape, the inner plug portion 16 is inserted into the bottle mouth portion 21. In the closed state, a gap 18 is formed in a portion where the outer peripheral surface of the inner plug portion 16 located below the recess 17 and the inner peripheral surface of the bottle mouth portion 21 face each other. In this gap 18, the outer peripheral surface of the inner plug portion 16 made of hard PET resin does not come into contact with the inner peripheral surface of the bottle mouth portion 21 made of harder glass. It is possible to prevent damage to the inner lid body B having the inner plug portion 16 when the mouth cap 1 is tapped, and in the radial direction of the lower end of the seal cylinder portion 2C of the upper lid portion 2 constituting the seal portion 13. Since the elastic deformation of the seal portion 13 is not limited, it is possible to eliminate the possibility of affecting the sealing property such as the sealing property of the sealing portion 13 being weakened.

Further, by forming the inner lid body B to be attached to the bottle mouth portion 21 with PET resin, a step of wrapping the lower portion of the stopper body with aluminum foil or other film after molding the stopper body as in the conventional case is performed. Since it can be made unnecessary, the manufacturing process can be simplified and the cost associated therewith can be reduced.

Further, since the inner lid body B made of PET resin is transparent, it comes into contact with the upper surface of the top wall 2A of the upper lid portion 2 provided on the lower surface thereof and the inner peripheral surface of the seal cylinder portion 2C via the top surface portion 15. The outer peripheral surface of the inner plug portion 16 (the outer peripheral surface of the recess 17) can be visually recognized from the outside. Therefore, the portion where the outer lid body A and the inner lid body B face each other, that is, one or both of the lower surface of the top surface portion 15 and the upper surface of the top wall 2A, or the outer peripheral surface of the inner plug portion 16 (the outer peripheral surface of the recess 17). ) And one or both of the inner peripheral surfaces of the seal cylinder 2C, or one or both of the radial outer end faces 15a of the top surface 15 and the inner peripheral wall 2b located on the radial outer side of the top wall 2A facing the same. By applying a design consisting of figures, symbols or colors or a combination thereof, the design can be visually recognized through the top surface portion 15, so that the bottle mouth cap 1 is given a high-class feeling. As a result, the bottle mouth cap 1 can be used to improve the appearance design.

Next, a method of opening the bottle mouth cap 1 having the above configuration from the bottle mouth portion will be described.
First, in the outer lid body A, the second inclined weakening portion 12b is broken by pulling up while pinching the knob portion 6a provided at the lower end of the side wall portion 6. Then, the breakage of the second inclination weakening portion 12b reaches the lower edge portion 7b of the window hole 7, and by continuously pulling up, the first inclination weakening portion 12a is broken through the upper edge portion 7a of the window hole 7, and the first inclination weakening portion 12a is broken. The break reaches the horizontal weakening portion 11.

Subsequently, the finger holding the picking portion 6a is pulled around the sealing cylinder portion 3 while rotating in one direction in the circumferential direction. Then, since the horizontal weakening portion 11 breaks over the entire circumference, the entire sealing cylinder portion 3 provided with the locked portion 8 can be separated from the upper lid portion 2.
After separation, the upper lid portion 2 and the inner lid body B are in an integrated state, and the seal portion 13 on the upper lid portion 2 side is tightly fitted and sealed in the bottle mouth portion 21, and the upper lid portion 2 is sealed. It is in an exposed state on the bottle mouth portion 21. Therefore, by opening the bottle by pulling it out while grasping the outer peripheral wall 5 of the upper lid portion 2, the content liquid in the bottle body 20 can be poured out through the bottle mouth portion 21.

In the bottle mouth cap 1 having the above configuration, even after opening the cap, the inner plug portion 16 of the inner lid body B is inserted into the bottle mouth portion 21 and fitted with the seal portion 13 of the upper lid portion 2 to be re-fitted. It is possible to close (recap).
Since the same closing state is set even after re-closing, it is possible to suppress the transfer of odor to the inner plug portion 16 constituting the inner lid body B.

Although the configuration of the present invention and its action and effect have been described above with reference to Examples, the embodiments of the present invention are not limited to the above Examples.
For example, in the above embodiment, a plurality of window holes 7 are provided in the side wall portion 6 of the sealing cylinder portion 3, and the first inclination weakening portion 12a and the second inclination weakening portion 12b are continuously provided above and below the window hole 7. However, the present invention is not limited to this, and the tilt weakening portion 12 having no window hole 7 and in which the first tilt weakening portion 12a and the second tilt weakening portion 12b are continuously arranged. It may be.

Further, in the above embodiment, the configuration in which the locked portion 8 is continuously provided to the upper edge portion 7a of the window hole 7 via the connecting portion 9 has been described, but the present invention is not limited to this. For example, a member having a substantially C-shape in a plan view including a locking portion may be separately arranged inside the sealing cylinder portion 3.

The present invention can be used in a wider range of applications in the field of bottle mouth caps.

1: Bottle mouth cap 2: Top lid 2A: Top wall 2B: Through hole 2C: Seal tube 2a: Vertical rib 2b: Inner peripheral wall 3: Sealing tube 5: Outer wall 5a: Laurette 6: Side wall 6a: Picking Part 6b: Step portion 7: Window hole 7a: Upper edge portion of the window hole 7b: Lower edge portion of the window hole 8: Locked portion 8a: End of the locked portion 9: Connecting portion 10: Notch portion 11 : Horizontal weakening portion 11a: Thin-walled portion 12: Tilt weakening portion 12a: First inclination weakening portion 12b: Second inclination weakening portion 13: Seal portion 15: Top surface portion 15a: Top surface portion end surface 16: Inner plug portion 17: Recess 18 : Gap 20: Bottle body 21: Bottle mouth part 22: Locking part A: Outer lid body B: Inner lid body

Claims (4)

An upper lid portion (2) in which a seal cylinder portion (2C) is continuously provided on the inner edge of a through hole (2B) formed in the top wall (2A), and an outer peripheral wall suspended from the outer peripheral edge of the upper lid portion (2). An outer lid body (A) having a sealing tube portion (3) separately provided with respect to (5), and an outer lid body (A).
An inner lid (B) including a top surface portion (15) that closes the through hole (2B) and an inner plug portion (16) that is hung from the top surface portion (15) and inserted into the seal cylinder portion (2C). ), And a bottle mouth cap (1) composed of
The inner lid (B) is made of PET resin, and the inner lid (B) is made of PET resin.
A seal portion (13) that is tightly fitted to the inner peripheral surface of the upper end of the bottle mouth portion (21) is formed on the outer peripheral surface of the seal cylinder portion (2C), and is below the seal portion (13) and described above. A bottle mouth cap characterized in that a gap (18) is arranged in a portion where the outer peripheral surface of the inner plug portion (16) and the inner peripheral surface of the bottle mouth portion (21) face each other. The bottle mouth cap according to claim 1, wherein the outer lid body (A) is made of a synthetic resin material softer than the inner lid body (B). A claim in which the inner lid (B) is transparent, and the portion where the outer lid (A) and the inner lid (B) are in contact with each other is designed with letters, figures, symbols or colors, or a combination thereof. Item 2. The bottle mouth cap according to item 1 or 2. The bottle mouth cap according to any one of claims 1 to 3, wherein the inner lid body (B) is used as an insert material for the outer lid body (A).

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