JP3290532B2 - Cap seal with inner stopper - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cap seal having an inner cap integrally formed with a cap seal by covering a bottle head of a milk bottle or the like so as to hygienically seal a drinking opening and omitting a paper cover. It is about.

[0002]

2. Description of the Related Art In general, a bottle containing a drink such as milk or juice is provided with a paper lid to seal the inside of the bottle. Is directly
Because it comes into contact with the mouth, this part is sold with a cap seal so as not to get dirty.

As a conventional cap seal, for example, FIG.
As shown in FIG. 12, after the beverage is put into the beverage bottle 2, the paper lid 5 is fitted into the drinking mouth portion 6 and sealed, and then a heat-shrinkable film 1 such as vinyl chloride is put on the bottle head 3 of the beverage bottle 2. In some cases, the cap seal 4 is formed by heat shrinkage. However, in this structure, since the cap seal 4 spreads and comes out of the bottle head 3 as it is, the paper cover 5 is removed and foreign matter is mixed in. Even if the seal 4 was put on the bottle head 3 as it was, there was a problem that it was not apparent from the appearance that the seal 4 was opened at all.

[0004] Because of these problems, in recent years,
13 are often used. In this method, a perforation 10 is formed in an annular shape on the upper side surface of a cylindrical heat-shrinkable film 9 whose upper surface is closed and the upper surface 8 is used as the top surface, and a U-shaped notch is provided here to make a knob portion.
11 is formed. As shown in FIG. 14, the cap seal 7 with the top is fitted with the paper lid 5 in the mouth opening 6 of the beverage bottle 2 containing the beverage, and then the cap 3 with the top is put on the bottle head 3. And heat-shrinks it to fix it.

When a drink is to be taken, the user pulls the knob 11 provided on the side of the cap seal 7 with the top face upward with his finger, and the force is distributed from the knob 11 to the perforation 10 and the perforation 10 is released. 10 is torn, and in one step, the upper part on the top surface 8 side can be removed as shown by a virtual line to expose the drinking part 6. Therefore, there is an advantage that once the top-side cap seal 7 is opened, it is broken and cannot be closed again.

However, in this structure, the perforations 10 are formed in an annular shape on the upper side surface of the cylindrical heat-shrinkable film 9 and the perforations 10 are expanded by the heat shrinkage. There is a problem that dirty water or the like invades and adheres to the drinking part 6 which the mouth directly touches, which is unsanitary. Also, when separated, the top surface 8 side above the perforation 10 is removed, but the heat-shrinkable film 9 below the perforation 10 remains on the bottle head 3 and The jagged portion of the perforation 10 is exposed. For this reason, when drinking the beverage, the lips may be cut by the jagged portion, which is dangerous.

[0007] In addition, the conventional beverage bottle 2 is sealed by fitting the paper lid 5 into the mouth opening 6 after the beverage is put in.
May be turned upside down, or the beverage inside may ooze out of the gap in the paper lid 5 due to vibration during transportation. In addition, since the knob portion 11 of the cap seal 7 with the top surface is small and the knob 5a formed on the paper lid 5 is also small, it is difficult for an elderly person to pick it up with his finger, and it is necessary to pick it up twice before drinking, which takes time. there were. In the process at the factory, paper cover 5
And a sealing process using a cap seal 7 with a top surface, which requires two sealing steps, resulting in poor workability and high cost.

[0008]

DISCLOSURE OF THE INVENTION The present invention eliminates the above-mentioned drawbacks, securely seals the beverage inside, and reliably prevents invasion of various bacteria, garbage, water, etc. into the drinking mouth, thereby achieving a sanitary condition. In addition, the inside stopper that seals the drinking part and the cap seal that covers the bottle head are integrally formed and can be opened simultaneously with one touch, and after opening, they are completely removed and safe and the manufacturing cost is low. A cap seal with a stopper is provided.

[0009]

SUMMARY OF THE INVENTION The present invention relates to a cap seal for heat shrinking over a bottle head and fixing the same, the upper edge bent portion of a cylindrical heat shrinkable film having an upper edge bent inward. A disk-shaped top surface is bonded to the inner surface, and an inner plug formed into a hollow cylinder made of soft plastic and filled with air is bonded below the top surface, and a space is provided on a side surface of the cylindrical heat-shrinkable film. At the same time, two grooves are formed in the vertical direction, and the lower end between the grooves is extended downward, or a slit is provided on the lower side of the groove to form a knob, and the groove is formed. A circular groove is formed at an upper edge bent portion surrounding the top surface so as to be continuous with an upper portion.

[0010]

The cap seal with the inner plug of the present invention is placed on the bottle head of the bottle containing the beverage and the like, and then the inner plug is pushed into the bottle mouth from above and fitted to seal the bottle. After this, when hot air is applied to the cap seal with the inside stopper that has been put on the bottle head,
The cylindrical heat-shrinkable film shrinks and is fixed. For this reason, the balloon-shaped inner plug in which air is sealed is pushed into the bottle mouth portion having a smaller diameter, so that the inner pressure of the inner plug increases and the inner stopper comes into close contact with the bottle mouth portion to securely seal the bottle. be able to.

When opening the bottle, the user grips the knob formed under the cap seal with the inside stopper with his finger and pulls it upward to form a vertically concave groove on the side surfaces of the heat-shrinkable film on both sides. This groove will tear upward. Furthermore, when the knob is pulled up, the force concentrates on the circular groove formed in the upper edge bent part that is continuous with the vertical groove, and at the same time the groove tears left and right toward both sides from here, The inside plug fitted into the bottle mouth comes out upward. For this reason, when the circular groove is torn more than half and the inner plug comes out, both sides of the already split groove are opened, and the whole can be removed together with the inner plug from the bottle head with one touch. Also, once the knob is pulled, the cap seal with the inner plug is broken and comes off, so that it cannot be closed again.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below in detail with reference to FIGS. Fig. 8 shows a cap seal with a plug
The top surface 8 is bonded to a cylindrical heat-shrinkable film 13 having an upper edge bent inward, and a top surface 8 is joined to the upper edge bent portion 13a. The inner plug 14 is formed into a hollow cylindrical shape and has air sealed therein. The diameter of the hollow cylindrical inner plug 14 is formed slightly larger than the inner diameter of the drinking opening 6 of the beverage bottle 2.

Further, two concave grooves 15, 15 are formed in the longitudinal direction at intervals on the side surface of the heat-shrinkable film 13, and
The space between these grooves 15 and 15 is extended downward and
11 is assumed. In addition, the upper edge bent portion 13 is formed continuously with the upper portions of the concave grooves 15, 15 so as to surround the disc-shaped top surface 8.
a is formed with a circular groove 16. As the heat-shrinkable film 13, for example, a polystyrene film (OP
When using S) or the like and having a thickness of, for example, about 80 microns, the depth of the concave grooves 15 and 16 is preferably about 40 microns.

First, as shown in FIG. 1, for example, as shown in FIG. 1, two concave grooves are formed along inner sides of both ends of a sheet 19 of a polystyrene film. After forming the sheets 15 and 15, the sheet 17 is bent into a cylindrical shape, and the overlapped portion 17a is bonded by heat-sealing or an adhesive, and the cylindrical body is cut laterally at predetermined intervals along the longitudinal direction. Then, the overlapped portion 17a, which has been heat-sealed or bonded, is cut into an L-shape to form a cylindrical heat-shrinkable film 13 having the knob portion 11 as the portion. A continuous heat-shrinkable film as shown in FIG.
13, between the knob 11 extending below the overlapping portion 17a and the cutout 18 from which the knob 11 of the adjacent cylindrical heat-shrinkable film 13 has come off. Two concave grooves 15, 15 are formed in parallel along both sides.

Separately from this, a soft plastic film such as a polystyrene film (OPS) having a thickness of about 100 μm is vacuum-formed to open an upper portion as shown in FIG. A hollow cylindrical inner plug 14 provided with 14a is prepared in advance. In addition, the inner plug 14 is set in a circular groove 19a provided on the upper part of the molding die 19 having an upper side formed with a step having a small outer diameter. After this, the flange
The adhesive 20 is applied to the upper surface of 14a in a ring shape. Next, FIG.
As shown in the figure, a cylindrical heat-shrinkable film 13 is
Put on the top of and make the upper part project slightly. Next, when hot air is sent to shrink the cylindrical heat-shrinkable film 13, it shrinks along the mold 19 as shown in FIG. 5 to form an upper edge bent portion 13a having an upper edge bent inward. The inner plug 14 is integrally joined under the upper edge bent portion 13a.

Next, after the adhesive 20 is applied in a ring shape on the upper surface of the upper edge bent portion 13a, as shown in FIG.
Place and glue. Next, a heater is built in and the top surface is 8
When the upper die 22 provided with a partially cutout annular projection 21 having a larger diameter is pressed onto the molding die 19, the top surface 8 is surrounded by the surface of the upper edge bent portion 13a as shown in FIG. Circular groove 16
A groove 16 is formed in the cylindrical heat-shrinkable film 13.
It becomes a continuous groove with the two grooves 15, 15 formed in the vertical direction.

As shown in FIG. 8, the cap seal 12 with the inner plug is placed on the bottle head 3 of the beverage bottle 2 containing the beverage, and then the inner plug 14 is pushed into the mouthpiece 6 from above. When fitted, the beverage bottle 2 is sealed. Thereafter, when hot air is applied to the cap seal 12 with an inner plug placed over the bottle head 3, the cylindrical heat-shrinkable film 13 contracts and is fixed as shown in FIG. For this reason, a balloon-shaped plug with air enclosed inside
Since the bottle 14 is pushed into the mouth portion 6 having a smaller diameter, the internal pressure of the inner plug 14 is increased, and the inside bottle 14 comes into close contact with the mouth portion 6 so that the beverage bottle 2 can be securely sealed. In addition, the bottle head 3 is completely covered with a cap seal 12 with an inner stopper and has excellent sealing properties, and there is no perforation 10 as in the prior art. It is sanitary without water intrusion.

When drinking beverages, a cap seal with an inner stopper
When the knob 11 extending downward from the pinch 12 is grasped with a finger and pulled upward, two longitudinal grooves 15 are formed on the side surfaces of the heat-shrinkable film 13 on both sides. The strength is low, and during this time, the overlapping portion 17a is formed and the strength is high, so that the concave grooves 15, 15 are torn upward. Further knob
When the 11 is pulled up, as shown in FIG. 10, the circular groove 16 formed in the upper edge bent portion 13a which is continuous with the grooves 15, 15 is thin and heat-cured, so that the force is concentrated here. From here, the concave groove 16 is torn toward the left and right sides, and at the same time, the inner plug 14 fitted to the drinking part 6 is pulled out upward.

Therefore, when the circular groove 16 is torn more than half and the inner plug 14 comes out, both sides of the already split grooves 15, 15 are opened, and the whole together with the inner plug 14 is one-touch from the bottle head 3. Can be removed with For this reason, the lower portion does not remain like the conventional cap seal 7 with a top surface having the perforation 10 shown in FIG. Further, once the knob portion 11 is pulled, the cap seal 12 with the inner plug is broken and cannot be closed again.

FIG. 11 shows another embodiment of the present invention.
Two concave grooves 15, 15 are formed in the longitudinal direction at intervals on the side surface of the cylindrical heat-shrinkable film 13, and these concave grooves 15, 15 are formed.
Slits 23 and 23 are provided on the lower side of 15, and the gap between them is used as the knob 11. When this is put on the bottle head 3 and heat-shrinked, the knob portion 11 jumps up to make it easier to pick.

As the heat-shrinkable film 13, for example, if a polystyrene film is used, no chlorine gas is generated unlike vinyl chloride, and there is no problem of pollution. However, another heat-shrinkable film may be used. In the present invention, the groove
15 and the concave groove 16 are not limited to the method of forming by hot pressing,
A method using a cutter may be used. The cap seal with an inner plug according to the present invention is not limited to a bottle for a beverage, and can be applied to a seal for a bottle filled with volatile oil or the like.

[0022]

As described above, according to the cap seal with the inner plug according to the present invention, since the inner cap is integrally formed with the cap seal with the top surface, the manufacturing cost is low, and there is no paper lid and the bottle opening is not provided. Since the sealing of the bottle and the sealing of the bottle head can be performed simultaneously, the workability is excellent, and moreover, the balloon-shaped inner plug filled with air is pushed into the bottle mouth and sealed, so that it can be securely sealed with high internal pressure. . Furthermore, since the cap seal has no perforation and the inside is sealed, it is sanitary by preventing bacteria, dirt, water and the like from entering the bottle head. In addition, the cap seal can be opened simultaneously with the inner stopper with one touch, and after opening, it is completely removed from the bottle head, so it can not be sealed again and is safe, and it is integrated with the side of the cylindrical heat-shrinkable film Since the knob portion is formed, it can be easily removed.

[Brief description of the drawings]

FIG. 1 is a plan view showing a state in which a heat-shrinkable film of the present invention is cut.

FIG. 2 is a perspective view showing a cylindrical heat-shrinkable film.

FIG. 3 is a cross-sectional view showing a molding die in which an inner plug is set.

FIG. 4 is a front view showing a molding die equipped with a cylindrical heat-shrinkable film.

FIG. 5 is a cross-sectional view showing a molding die to which a cylindrical heat-shrinkable film having an upper edge bent portion formed by heat-shrinking is mounted.

FIG. 6 is a cross-sectional view showing a state in which a top surface is adhered to an upper edge bent portion and a circular groove is formed outside the top surface.

FIG. 7 is a plan view showing a cap seal with an inner plug according to the present invention.

8 is a perspective view showing a state in which the cap seal with the inner plug of FIG. 7 is put on the bottle head.

FIG. 9 is a cross-sectional view showing a beverage bottle in which a cap seal with an inner stopper is thermally contracted.

FIG. 10 is a perspective view showing a state in which a cap seal with a middle plug is removed.

FIG. 11 is a perspective view showing a cap seal with an inner plug according to another embodiment of the present invention.

FIG. 12 is a front view showing a bottle head to which a conventional cap seal is attached.

FIG. 13 is a perspective view showing a conventional cap seal with a top surface.

14 is a front view showing a bottle head to which the conventional cap seal with a top surface shown in FIG. 13 is attached.

[Description of sign]

 DESCRIPTION OF SYMBOLS 1 Heat-shrinkable film 2 Beverage bottle 3 Bottle head 4 Cap seal 5 Paper lid 6 Drinking mouth 7 Cap seal with top surface 8 Top surface 9 Cylindrical heat-shrinkable film 10 Perforation 11 Knob 12 Cap with inner stopper Seal 13 Cylindrical heat-shrinkable film 13a Bend of upper edge 14 Inner plug 15 Groove 16 Circular groove 19 Mold 20 Adhesive 23 Slit

Continuation of the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) B65D 41/62 B65D 51/18 B65D 77/20

Claims (1)

(57) [Claims] 1. A cap seal which is fixed to a bottle head by heat-shrinking and fixing, wherein a disk-shaped top surface is provided on an upper edge bent portion of a cylindrical heat-shrinkable film having an upper edge bent inward. Under the top surface, an inner plug formed of a soft plastic in a hollow cylindrical shape and filled with air is joined, and two concave grooves are provided on the side surface of the cylindrical heat-shrinkable film at an interval. Are formed in the longitudinal direction, and the lower end between the grooves is extended downward, or a slit is provided on the lower side of the groove to form a knob, and the top is continuously formed above the groove. A cap seal with an inner plug, wherein a circular groove is formed in an upper edge bent portion surrounding a surface.