JP3723485B2 - Caps and carbonated beverage bottles - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a cap used for sealing a so-called ramune bottle and a ramune bottle equipped with the cap.
[0002]
[Prior art]
Shown in Japanese Utility Model Publication Nos. Sho 62-171441, 62-171443, 62-171444, Hikari Hei 1-47697, 2-8742, 2-16754, 3-97050, 4-118342, 5-51752, etc. The cap body has a generally dome shape, has a protrusion that engages with an annular protrusion on the outer periphery of the bottle mouth portion on the inner peripheral surface, and has a spout at the center of the top, and is disposed inside the cap body. A packing member that has a generally cylindrical shape, has an outer periphery that contacts the inner peripheral surface of the bottle mouth portion to maintain airtightness, and that maintains airtightness by contact with a sealing ball that is held by the inner peripheral portion, and this packing A cap of a carbonated beverage bottle made of a sealing ball held on the inner peripheral portion of a member is known.
[0003]
This type of cap is known as a cap that can seal the ramune bottle very easily, assembling and integrating the cap body, packing member and sealing ball in advance and plugging them into the bottle mouth. Yes. Usually, the cap body is made of a relatively hard material such as polypropylene so that the cap body can be firmly engaged with the bottle mouth, and the packing member is kept in contact with the inner surface of the bottle mouth and the outer surface of the sealing ball so that airtightness is maintained. A relatively soft material such as polyethylene is used.
[0004]
In recent years, it has been demanded that the cap can be easily removed from the bottle, the bottle and the cap are separated and easily recycled, and resources are effectively used. Japanese Patent Laid-Open No. 2001-146253 provides a weakening groove in the radial direction in this type of cap body, and after drinking, the cap body is destroyed from the weakening groove by pushing out the spout with a special instrument. Techniques have been disclosed that allow the cap to be removed from the bottle.
[0005]
[Problems to be solved by the invention]
In this type of conventional cap, the cap is plugged into the bottle mouth part at once with a stopper, and the cap formed by engaging the protrusion formed inside the cap body with the annular protrusion on the outer periphery of the bottle mouth part. Attached to the bottle mouth. If the cap body is provided with a radial weakening groove, when the cap is plugged into the bottle mouth with a plugging machine, the diameter of the cap body is expanded, and the weakening groove is broken by the impact of the stopper and the cap. May be damaged and become defective. An object of the present invention is to prevent the cap from being damaged when a cap that can be easily removed from the bottle after drinking is attached to the bottle mouth portion.
[0006]
[Means for Solving the Problems]
The present invention has a cap body having a dome shape, a ridge (7) that engages with a ridge (21) on the outer periphery of the bottle mouth portion on the inner peripheral surface, and a spout (5) in the center of the top. 2) and the cap body (2) are arranged inside, have a generally cylindrical shape, and the outer peripheral surface is in contact with the inner peripheral surface of the bottle (20) to maintain airtightness, and is held by the inner peripheral portion. Cap of carbonated beverage bottle comprising packing member (3) that maintains airtightness by contact with sealing ball (4) and sealing ball (4) that is held by the inner peripheral portion of packing member (3) The cap body (2) has a radial weakening groove (6), and a plurality of convex portions (13) are formed on the top of the cap body (2). (4) Press down to open the bottle, and after you finish drinking the contents, push the spout (5) forward In the cap of the carbonated beverage bottle that Ru can be removed the cap from weakening groove (6) by breaking the cap body (2) from the bottle, the weakening groove (6) is formed with a plurality, the convex portion (13) It is a cap of a carbonated beverage bottle characterized by being formed in the center between weakening grooves .
Further, the present invention is a cap body having a substantially dome shape, having a ridge (7) that engages with a ridge (21) on the outer periphery of the bottle mouth on the inner peripheral surface, and a spout (5) in the center of the top. (2) is disposed inside the cap body (2), has a substantially cylindrical shape, the outer peripheral surface is in contact with the inner peripheral surface of the bottle (20), maintains airtightness, and is wrapped by the inner peripheral portion. A carbonated beverage bottle comprising a packing member (3) that retains hermeticity by contact with a sealing ball (4) that is held, and a sealing ball (4) that is held by the inner peripheral portion of the packing member (3) The cap body (2) is formed with a radial weakening groove (6), and a plurality of protrusions (13) are formed on the top of the cap body (2), Open the ball (4) by pushing it down, and after having finished drinking the liquid, push the spout (5) wide. In the cap of a carbonated beverage bottle in which the cap body (2) can be destroyed from the weakened groove (6) and the cap can be removed from the bottle, the convex portion (13) is a convex strip formed in the radial direction. It is a cap of the carbonated drink bottle characterized.
Moreover, this invention is a carbonated drink bottle characterized by mounting these caps on the mouth.
[0007]
Since the cap of the present invention has the above-described configuration, when the stopper is plugged into the bottle mouth, the head of the stopper hits the convex part and does not directly contact the weakened groove. The impact acting on the weakening groove is alleviated, and the risk of the weakening groove breaking and damaging the cap at the time of plugging is reduced.
[0008]
It is desirable that the convex portion be formed as far as possible from the weakening groove. Therefore, when a plurality of weakening grooves are formed, the convex portion is preferably formed at the center between the weakening grooves.
[0009]
As for the shape of a convex part, it is desirable that it is the elongate convex strip formed in the radial direction. The force received from the head of the stopper is easily transmitted downward from the side wall of the cap, the excessive force acting on the weakening groove is reduced, and the possibility that the weakening groove is broken and the cap is damaged is further reduced.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described in detail with reference to the drawings showing examples. 1 is a top view of the cap 1 of the embodiment, FIG. 2 is a cross-sectional view taken along the line AA in FIG. 1, and FIG.
[0011]
A cap 1 shown in the figure includes a cap body 2, a packing member 3, and a sealing ball 4. The cap body 2 is made of polypropylene and has an overall dome shape. The cap body 2 has a ridge 7 threadedly engaged with an annular ridge 21 on the outer periphery of the bottle 20 mouth portion on the inner peripheral surface, and a spout at the center of the top portion. 5 The periphery of the spout 5 is a peripheral wall 8 formed downward from the top, and a projection 9 for connecting the packing member 3 is formed at the lower end thereof. Three V-shaped weakening grooves 6 are provided on the inner surface of the cap body 2 at equal intervals (120 ° intervals) in the radial direction. The weakening groove may be provided on the outer surface of the cap body, or may be provided on both the inner surface and the outer surface. In addition, three convex portions 13 are formed on the outer surface including the top portion of the cap body 2. The protrusion 13 is an elongated protrusion formed in the radial direction, and is formed at the middle position between the weakening grooves 6, that is, at a position of 60 ° from the weakening groove.
[0012]
The packing member 3 is made of polyethylene and has a substantially cylindrical shape, and the outer peripheral surface is in contact with the inner peripheral surface of the mouth portion of the bottle 20 to maintain airtightness. A flange portion 11 is formed on the outer peripheral surface, and the lower surface thereof is in contact with the upper surface of the bottle mouth portion. A circumferential groove 12 is provided at the proximal end of the flange portion 11, whereby the outer peripheral surface is elastically pressed against the inner peripheral surface of the bottle mouth. A glass sealing ball 4 is held in the inner peripheral portion. The inner peripheral portion of the packing member 3 and the outer surface of the sealing ball 4 are elastically contacted by the inner peripheral portion being pressed by the sealing ball, and airtightness is maintained. A protrusion 10 is formed inside the upper portion of the packing member 3, and the packing member 3 is coupled to the cap body 2 by engaging the protrusion 10 with the protrusion 9 of the cap body.
[0013]
As shown in FIG. 3, the cap 1 is pressed and attached to the bottle mouth portion by the head 30 of the plugging machine. At this time, the head 30 of the plugging machine comes into contact with the convex portion 13, and the weakening groove portion is formed. Since it is not in direct contact, the impact acting on the weakening groove during the plugging is mitigated, and the possibility that the weakening groove is broken and the cap is damaged during the plugging is reduced. Since the shape of the convex portion is a long and narrow ridge formed in the radial direction, the force received from the head 30 of the stopper is easily transmitted downward from the side wall of the cap, and the excessive force acting on the weakening groove is reduced. In addition, the possibility that the weakened groove is broken and the cap is damaged is further reduced.
[0014]
After drinking the content liquid, push out the spout with a special instrument and destroy the cap body from the weakened groove. After that, the packing member 3 is removed from the bottle opening. If the packing member is removed, the sealing ball 4 can also be taken out from the bottle opening. In this way, the bottle and the cap can be easily separated.
[0015]
【The invention's effect】
Since the cap of the present invention can be easily removed from the bottle by breaking the cap body, the bottle and the cap can be easily separated and recycled, which contributes to effective use of resources. In addition, since the cap is rarely damaged when the cap is attached to the bottle, the occurrence of defective products is reduced.
[Brief description of the drawings]
FIG. 1 is a top view of a cap 1 of an embodiment.
FIG. 2 is a cross-sectional view taken along line AA in FIG.
FIG. 3 is an explanatory view at the time of stoppering.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Cap 2 Cap main body 3 Packing member 4 Sealing ball 5 Outlet 6 Weakening groove 7 Projection 8 Perimeter wall 9 Projection 10 Projection 11 Flange part 12 Circumferential groove 13 Protrusion 20 Bottle 21 Projection 30 Head

Claims (4)

A cap body (2) having a generally dome shape, having a ridge (7) engaged with a ridge (21) on the outer periphery of the bottle mouth portion on the inner peripheral surface, and having a spout (5) in the center of the top; A sealing ball (inside of the cap body (2), which has a generally cylindrical shape, whose outer peripheral surface is in contact with the inner peripheral surface of the bottle (20), maintains airtightness, and is held by the inner peripheral portion) 4) A carbonated beverage bottle cap comprising a packing member (3) that maintains hermeticity in contact with 4) and a sealing ball (4) that is held by the inner peripheral portion of the packing member (3), A radial weakening groove (6) is formed in the cap body (2), and a plurality of protrusions (13) are formed on the top of the cap body (2), and the sealing ball (4) is Open the plug by pushing down, and after drinking the content liquid, push the spout (5) and open the weakening groove ( In the cap of the carbonated beverage bottle may be) from destroying the cap body (2) removing the cap from the bottle, the weakening groove (6) is formed with a plurality, the center between the projections (13) of the weakening groove Cap of carbonated drink bottle characterized by being formed in A cap body (2) having a generally dome shape, having a ridge (7) engaged with a ridge (21) on the outer periphery of the bottle mouth portion on the inner peripheral surface, and having a spout (5) in the center of the top; A sealing ball (inside of the cap body (2), which has a generally cylindrical shape, whose outer peripheral surface is in contact with the inner peripheral surface of the bottle (20), maintains airtightness, and is held by the inner peripheral portion) 4) A carbonated beverage bottle cap comprising a packing member (3) that maintains hermeticity in contact with 4) and a sealing ball (4) that is held by the inner peripheral portion of the packing member (3), A radial weakening groove (6) is formed in the cap body (2), and a plurality of protrusions (13) are formed on the top of the cap body (2), and the sealing ball (4) is Open the plug by pushing down, and after drinking the content liquid, push the spout (5) and open the weakening groove ( In caps of carbonated beverage bottles that can be) from destroying cap body (2) removing the cap from the bottle, carbonated drinks, characterized in that the projection (13) is a convex formed radially Bottle cap 2. The cap of carbonated beverage bottle according to claim 1 , wherein the convex portion (13) is a ridge formed in a radial direction.   A carbonated beverage bottle, wherein the cap of claim 1, 2 or 3 is attached to the mouth.

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