JP2019182510A - Bottle plug - Google Patents

Abstract

To provide a bottle plug which can maintain sealing of a bottle mouth excellently when water heating sterilization is made to a drinking object.SOLUTION: A bottle plug comprises a plug body 1 and a connection member 2. The plug body 1 includes a first resin as a main constituent, and has a hollow portion 11 and a cylindrical peripheral wall 12 that surrounds the hollow portion 11. When the plug body 1 is fitted in a bottle mouth 20, the peripheral wall 12 comes in contact with the bottle mouth 20, and the bottle mouth 20 is sealed. The connection member 2 is arranged in the hollow portion 11 of the plug body 1. Further, the connection member 2 comes in contact with the peripheral wall 12, and heat resistance thereof is higher than that of the peripheral wall 12.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a bottle stopper, and more particularly to a bottle stopper that seals a bottle mouth of a sake bottle.

  As a bottle stopper that seals the bottle mouth of a sake bottle, Patent Document 1 describes a bottle stopper including a cup-shaped stopper having a hollow portion and an upper lid attached to the upper part of the stopper. In the bottle stopper described in Patent Document 1, the stopper is made of a resin, and the stopper is sealed by pressing the stopper into the stopper.

Japanese Unexamined Patent Publication No. 2016-49999

  However, in the bottle stopper described in Patent Document 1, when the burning is performed by bottle sterilization, the sealing of the bottle mouth may not be maintained well. For example, the sake is heated in order to prevent the sake from being denatured by, for example, the action of lactic acid bacteria or from being excessively matured by the action of an enzyme. As for burning, a method of heating sake before bottling is common, but in recent years, jar sterilization in which sake is heated after bottling has attracted attention.

  Bottle sterilization is performed in such a manner that sake is put into a sake bottle, capped, and then heated, for example, with warm water to 60-65 ° C. together with the sake. According to bottle sterilization, the taste and aroma of sake can be prevented from being impaired, and a good flavor can be maintained.

  As described above, in jar sterilization, sake is poured into a sake bottle and the sake is heated after plugging. As the plug material, generally, soft polyethylene is used from the viewpoints of openability and food hygiene. Therefore, when a conventional general stopper is used for jar sterilization, the stopper is thermally deformed at the time of firing, a gap is formed between the bottle mouth and the stopper, and the contents may leak from the bottle mouth. possible. In addition, in order to avoid thermal deformation of the plug body, even when a hard material is used as the material of the plug body, especially when the gap between the bottle mouth and the plug body is generated or the bottle bowl is not sterilized, the plug body Is too hard to cause the bottleneck to be easily opened.

  This invention is made | formed in view of the said subject, The objective is to provide the bottle stopper which can maintain the airtightness of a bottle mouth favorably also when sterilizing a bottle candy to drink.

  The bottle stopper disclosed in the present application includes a stopper and an abutting member. The plug includes a first resin as a main component, and has a hollow portion and a cylindrical peripheral wall surrounding the hollow portion. Further, when the stopper is press-fitted into the bottle mouth, the peripheral wall comes into contact with the bottle mouth and seals the bottle mouth. The contact member is disposed in the hollow portion of the plug. Moreover, the said contact member contact | abuts to the said surrounding wall, and heat resistance is higher than the said surrounding wall.

  In the bottle cap disclosed in the present application, the contact member includes an inorganic compound as a main component.

  In the bottle cap disclosed in the present application, the contact member includes the second resin as a main component. The thermal deformation temperature of the second resin is higher than the thermal deformation temperature of the first resin.

  In the bottle cap disclosed in the present application, the peripheral wall includes a large diameter portion, a small diameter portion, and a plurality of ribs. The plurality of ribs protrude from an inner peripheral surface of the peripheral wall so as to extend from the large diameter portion to the small diameter portion. The contact member has a cylindrical main body. The main body abuts on the plurality of ribs.

  In the bottle cap disclosed in the present application, the main body has a plurality of recesses. The plurality of recesses fit into the plurality of ribs.

  According to the bottle cap of the present invention, the plug body has a hollow portion and a cylindrical peripheral wall surrounding the hollow portion, and the contact member is disposed in the hollow portion of the plug body and contacts the peripheral wall. Higher heat resistance than Therefore, even when the bottled food is sterilized, the sealing property of the bottle mouth can be maintained well.

(A) is a side view which shows the bottle stopper which concerns on Embodiment 1 of this invention. (B) is sectional drawing which shows the bottle stopper which concerns on Embodiment 1 of this invention. It is sectional drawing which shows the internal structure of the stopper which concerns on Embodiment 1 of this invention. It is sectional drawing which shows the bottle stopper which concerns on Embodiment 2 of this invention.

  DESCRIPTION OF EMBODIMENTS Embodiments relating to a bottle cap according to the present invention will be described below in detail with reference to the accompanying drawings. Each embodiment described below is a preferred specific example for carrying out the present invention, and thus various technical limitations are made. However, the present invention particularly limits the invention in the following description. Unless otherwise specified, the present invention is not limited to this form. In the following description, “upper” indicates the upper direction in FIGS. 1 to 3, and “lower” indicates the opposite direction.

[Embodiment 1]
Hereinafter, Embodiment 1 of the present invention will be described with reference to FIGS. 1 and 2. Fig.1 (a) is a side view which shows the bottle stopper which concerns on Embodiment 1 of this invention. FIG.1 (b) is sectional drawing which shows the bottle stopper which concerns on Embodiment 1 of this invention. FIG. 2 is a cross-sectional view showing the internal structure of the plug according to Embodiment 1 of the present invention.

  As shown in FIGS. 1 and 2, the bottle stopper according to the embodiment includes a stopper 1 that closes the bottle opening 20 and a contact member 2. The bottle cap according to the embodiment includes the upper lid 3 and the film 16.

  The plug 1 includes a first resin as a main component, and includes a hollow portion 11 and a cylindrical peripheral wall 12 that surrounds the hollow portion 11. That is, the most contained component among the components contained in the plug 1 is the first resin. When the stopper 1 is press-fitted into the bottle opening 20, the peripheral wall 12 comes into contact with the bottle opening 20 and seals the bottle opening 20. The first resin is, for example, polyethylene. The contact member 2 is disposed in the hollow portion 11 as shown in FIG. The contact member 2 is in contact with the peripheral wall 12 and has higher heat resistance than the peripheral wall 12. As for the heat resistance, the higher the temperature at which the properties such as the shape change in various tests in which heat such as heat distortion temperature, glass transition temperature and softening point is applied, the higher the heat resistance.

  As shown in FIG. 2, the plug body 1 is cup-shaped, and includes a peripheral wall 12, a step portion 13 provided continuously with the upper end of the peripheral wall 12, a flange portion 14 provided continuously with the upper end of the step portion 13, And a bottom cover portion 15 provided continuously to the lower end of the peripheral wall 12. In the embodiment, the peripheral wall 12 is cylindrical. When the stopper 1 is press-fitted into the bottle mouth 20, the outer peripheral portion of the peripheral wall 12 is in close contact with the inner peripheral surface of the bottle mouth 20, and the bottle mouth 20 is sealed.

  As shown in FIG. 1, protrusions 18 can be provided on the outer peripheral surface of the peripheral wall 12 in order to improve the sealing performance of the bottle mouth 20. The protrusion 18 is annular, and is formed on the outer peripheral surface of the peripheral wall 12 so as to extend in the circumferential direction of the peripheral wall 12. Further, only one protrusion 18 can be provided on the outer peripheral surface of the peripheral wall 12, or a plurality of protrusions 18 can be provided in order to seal the bottle opening 20 more stably.

  The step portion 13 has a ring shape larger in diameter than the peripheral wall 12. The inner peripheral surface of the step portion 13 is continuous with the inner peripheral surface 17 of the peripheral wall 12. When the stopper 1 is press-fitted into the bottle mouth 20, the lower end portion 13 a of the stepped portion 13 comes into contact with the upper end portion of the bottle mouth 20. An annular ridge can be provided on the lower end portion 13 a of the stepped portion 13 so as to extend in the circumferential direction in order to improve the sealing property between the upper end portion of the bottle mouth 20.

  The flange portion 14 has a ring shape larger in diameter than the step portion 13. The inner diameter of the flange portion 14 is larger than the inner diameter of the step portion 13. The outer diameter of the flange portion 14 is larger than the outer diameter of the step portion 13. As described above, the step portion 13 is disposed between the peripheral wall 12 and the flange portion 14. By arranging the step portion 13 between the peripheral wall 12 and the flange portion 14, a gap is formed between the flange portion 14 and the upper end portion of the bottle mouth 20 as shown in FIG. Therefore, when removing the bottle cap from the bottle mouth 20, it is possible to insert a fingertip into the gap, and it becomes easy to remove the bottle stopper from the bottle mouth 20. Moreover, the bottom cover part 15 has the dish shape which the center part raised, and has block | closed the hollow part 11 from the lower side.

  As shown in FIG. 1B, the upper lid 3 is attached to the flange portion 14 so as to cover the upper opening of the plug body 1. The upper lid 3 has a top plate portion 31, a side plate portion 32, and a lower plate portion 33. The top plate portion 31 has a circular fitting plate portion 31a and a peripheral edge portion 31b. The fitting plate portion 31 a is fitted into the upper opening of the plug body 1. The peripheral edge portion 31 b covers the upper end surface of the flange portion 14. The side plate portion 32 has a cylindrical shape and covers the outer peripheral surface of the flange portion 14. A plurality of groove portions 32a can be formed on the outer surface of the side plate portion 32 to prevent slippage. The lower plate portion 33 is formed by caulking inward a cylindrical plate material that extends downward from the lower end of the side plate portion 32. The lower plate portion 33 contacts the lower end portion of the flange portion 14. The film 16 is formed from, for example, an aluminum foil laminated with a resin. The film 16 prevents odors from being transferred from the stopper 1 to the drink during sterilization of bottles. In an embodiment, the drink is sake.

[Surrounding wall 12]
Next, the peripheral wall 12 will be described in more detail with reference to FIG. As shown in FIG. 2, the peripheral wall 12 includes a large diameter portion 12 a and a small diameter portion 12 b, and a plurality of ribs 40. The small diameter portion 12b is disposed below the large diameter portion 12a. As for the stopper 1, the large diameter part 12a is mainly closely_contact | adhered to the bottle opening 20, and the bottle opening 20 is sealed.

  Moreover, the surrounding wall 12 has the connection part 12c which connects the large diameter part 12a and the small diameter part 12b. The connecting portion 12c increases in diameter from the bottom to the top. Corresponding to the peripheral wall 12 being divided into a large diameter portion 12a, a small diameter portion 12b, and a connecting portion 12c, the inner peripheral surface 17 of the peripheral wall 12 is divided into an upper portion 17a, a lower portion 17b, and an intermediate portion 17c. Is done.

  As shown in FIG. 2, the plurality of ribs 40 project from the inner peripheral surface 17 of the peripheral wall 12 so as to extend from the large diameter portion 12a to the small diameter portion 12b. The plurality of ribs 40 protrude from the inner peripheral surface 17 with a certain interval in the circumferential direction. The length of the plurality of ribs 40 protruding inward in the radial direction in the upper portion 17a of the inner peripheral surface 17 is the length in which the plurality of ribs 40 protrudes inward in the radial direction in the lower side portion 17b of the inner peripheral surface 17. Longer than that. Moreover, in the intermediate part 17c of the inner peripheral surface 17, the length in which the plurality of ribs 40 protrude radially inward increases from the bottom to the top. In the embodiment, the plurality of ribs 40 extend upward from the upper portion 17 a of the inner peripheral surface 17 to the inner peripheral surface of the stepped portion 13.

[Abutting member 2]
Next, the contact member 2 will be described in more detail with reference to FIG. The contact member 2 contains an inorganic compound as a main component. That is, the most contained component among the components contained in the contact member 2 is an inorganic compound. For this reason, the contact member 2 is less likely to be thermally deformed than the first resin of the plug 1 and has high heat resistance. As the inorganic compound forming the contact member 2, a metal such as aluminum or an aluminum alloy, a metal oxide such as silicon oxide, aluminum oxide, zirconium oxide, or barium titanate can be used. Further, the contact member 2 has a cylindrical main body 21. The main body 21 abuts on the plurality of ribs 40. In the embodiment, the contact member 2 is cup-shaped and includes a cylindrical main body portion 21, a bottom portion 22, and an edge plate portion 23. The contact member 2 has a cup shape in the present embodiment, but may have various shapes such as a cylindrical shape, a column shape, and a spherical shape in other embodiments.

  Further, the main body 21 has a plurality of recesses 24. The plurality of recesses 24 are recessed toward the inside in the radial direction. The plurality of recesses 24 are in close contact with the plurality of ribs 40 of the plug body 1. The positions where the plurality of recesses 24 are formed correspond to the positions of the plurality of ribs 40, and the plurality of ribs 40 abut on the main body 21 at the bottoms of the plurality of recesses 24. The main body 21 of the contact member 2 does not have a plurality of recesses 24 in advance, and the plurality of recesses 24 are cylindrical when the contact member 2 is pushed into the hollow portion 11 of the plug body 1. The main body 21 is deformed and formed in the main body 21. Further, the plurality of recesses 24 can be formed in the main body portion 21 in advance so as to face the rib 40 before the contact member 2 is pushed into the hollow portion 11 of the plug body 1.

  The bottom 22 is connected to the lower end of the main body 21. The edge plate portion 23 is an annular plate material, and is continuously provided so as to protrude radially outward from the upper end portion of the main body portion 21. The lower surface of the edge plate portion 23 contacts the upper end surface of the step portion 13. The abutting member 2 is pushed into the hollow portion 11 from the upper end opening of the plug body 1 until the bottom portion 22 faces down and the lower surface of the edge plate portion 23 abuts on the upper end surface of the stepped portion 13.

[Bottle sterilization]
When the drink is sake, burning by jar sterilization is performed by the following first to fourth steps. By burning by jar sterilization, the taste and aroma of sake can be prevented from being impaired, and a good flavor can be maintained.

  In the first step, sake is poured into a sake bottle (for example, a bottle of sake). In the second step, the stopper 1 is press-fitted into the bottle mouth 20 until the stepped portion 13 contacts the bottle mouth 20, and the bottle mouth 20 is sealed. The first step and the second step are repeated a predetermined number of times to prepare a predetermined number of sake bottles in which sake is injected and the bottle mouth 20 is sealed. In the third step, a predetermined number of sake bottles are placed on a conveyor and moved so as to pass through a shower space in which hot water of 60 to 65 ° C. pours down, and sake is heated to 60 to 65 ° C. continuously. In the fourth step, the sake is cooled. In the third step, a predetermined number of sake bottles can be heated in a batch manner by hot water bathing.

  As described above with reference to FIGS. 1 and 2, according to the present embodiment, the contact member 2 is disposed in the hollow portion 11 of the plug body 1, and the contact member 2 is a peripheral wall. 12 is higher in heat resistance than the peripheral wall 12. Accordingly, the stopper 1 is formed of a resin having relatively low heat resistance, such as soft polyethylene, and the bottle mouth 20 has a good sealing property even when sterilizing bottled sake such as sake. Can be maintained. More specifically, when the bottle stopper is pulled out from the bottle mouth 20, the bottle stopper is not easily pulled out or the bottle stopper is not too loose, and a good opening feeling can be obtained.

  In order to prevent the problem that the plug body 1 cannot be sealed due to thermal deformation, it is possible to obtain a good opening feeling only by using a harder resin that is hard to be thermally deformed as the material of the plug body 1. Have difficulty. Bottle candy sterilization is performed under conditions of various heating temperatures and heating times, and it is difficult to obtain a good opening feeling under all conditions. Even if a hard resin is used as the material of the plug body 1, if the material is denatured due to the thermal history, the sealing with the bottle mouth 20 cannot be sufficiently maintained. On the other hand, particularly when the bottle jar is not sterilized, the stopper 1 may be too hard to be pulled out. In the present embodiment, the material of the plug 1 is not changed to a hard resin, but the contact member 2 prevents a problem that the plug 1 cannot be sealed due to thermal deformation. Therefore, it is possible to achieve a good opening feeling against the bottle sterilization performed under various conditions. Further, it is possible to prevent the plug body 1 from being too hard and difficult to remove.

  Further, as described with reference to FIGS. 1 and 2, according to the present embodiment, the plurality of ribs 40 are formed on the inner peripheral surface 17 at a constant interval in the circumferential direction, and the contact member 2. Abuts against the plurality of ribs 40. Therefore, the inner peripheral surface 17 of the peripheral wall 12 does not contact the contact member 2 over the entire surface, and it is possible to ensure the tolerance for the elastic deformation of the plug body 1 and the plug body 1 is too hard to be easily removed. Can be prevented.

  Further, as described with reference to FIG. 2, according to the present embodiment, the small diameter portion 12 b is disposed below the large diameter portion 12 a in the plug body 1, as shown in FIG. As described above, a gap is secured between the lower portion of the stopper 1 and the bottle mouth 20. Therefore, when the bottle stopper is pulled out from the bottle mouth 20, the axis of the stopper 1 can be inclined with respect to the axis of the bottle mouth 20, and the bottle stopper can be easily pulled out from the bottle mouth 20. That is, when the fingertip is inserted between the flange portion 14 and the bottle opening 20, the bottle stopper can be largely inclined, and the bottle stopper can be easily pulled out from the bottle opening 20.

  Further, since the small-diameter portion 12b is disposed at the lower part of the stopper 1, the stopper 1 can be easily inserted into the stopper 20 when the stopper 1 is press-fitted into the stopper 20 so that the stopper It becomes easy to attach to the bottle opening 20.

[Embodiment 2]
Next, Embodiment 2 of the present invention will be described with reference to FIG. FIG. 3 is a cross-sectional view showing a bottle cap according to Embodiment 2 of the present invention. Hereinafter, the points of the second embodiment different from the first embodiment will be mainly described.

  In the second embodiment, the plug body 1 </ b> A includes a peripheral wall 12, a stepped portion 13, a flange portion 14 </ b> A, and a bottom lid portion 15. The flange portion 14 </ b> A has an annular convex portion 19. The upper lid 3A includes a top plate portion 31A, a side plate portion 32, and a lower plate portion 33. The top plate portion 31A includes a circular portion 31c, an inclined portion 31d, and a peripheral edge portion 31b.

  The circular portion 31 c has a diameter equal to the outer diameter of the annular convex portion 19 and is disposed on the annular convex portion 19. The inclined portion 31d is disposed between the circular portion 31c and the peripheral portion 31b, and connects the circular portion 31c and the peripheral portion 31b. As described above, in the second embodiment, the flange portion 14 </ b> A has the annular convex portion 19. Therefore, the design different from the bottle stopper of Embodiment 1 can be imparted to the bottle stopper.

  The embodiment of the present invention has been described above with reference to the drawings (FIGS. 1 to 3). However, the present invention is not limited to the above-described embodiment, and can be implemented in various modes without departing from the gist thereof (for example, (1) shown below).

(1) In the above-described embodiment, the contact member 2 includes an inorganic compound as a main component. However, the present invention is not limited to this, and the contact member 2 may include a second resin as a main component. However, regarding the heat deformation temperature (which can be measured by a test indicated by the load deflection temperature in JIS 7191-2: 2007), which is one of the indices indicating heat resistance, the heat deformation temperature of the second resin is It is higher than the thermal deformation temperature of one resin. From the viewpoint of productivity, the contact member 2 preferably contains an inorganic compound as a main component. However, when polyethylene is used as the first resin of the plug 1, the material of the contact member 2 is polypropylene or the like. Even when a resin having a high heat distortion temperature is used, the same effect as that of the above embodiment can be achieved. Further, the contact member can be formed of cork.

DESCRIPTION OF SYMBOLS 1, 1A ... Plug body 11 ... Hollow part 12 ... Peripheral wall 12a ... Large diameter part 12b ... Small diameter part 17 ... Inner peripheral surface 2 ... Contact member 20 ... Bottle mouth 21 ... Main body part 40 ... Rib

Claims (5)

The first resin is included as a main component, and has a hollow part and a cylindrical peripheral wall surrounding the hollow part. A plug body to
A bottle stopper comprising: an abutting member disposed in the hollow portion of the stopper, abutting on the peripheral wall and having higher heat resistance than the peripheral wall.   The bottle stopper according to claim 1, wherein the contact member includes an inorganic compound as a main component. The contact member includes a second resin as a main component,
The bottle cap according to claim 1, wherein the second resin has a heat deformation temperature higher than a heat deformation temperature of the first resin. The peripheral wall includes a large-diameter portion and a small-diameter portion, and a plurality of ribs that project from an inner peripheral surface of the peripheral wall so as to extend from the large-diameter portion to the small-diameter portion,
The bottle stopper according to any one of claims 1 to 3, wherein the abutting member has a cylindrical main body that abuts the plurality of ribs.   The bottle cap according to claim 4, wherein the main body has a plurality of recesses that fit into the plurality of ribs.

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