JPH07187209A - Cap seal with roof piece - Google Patents

Abstract

PURPOSE:To provide a cap seal with a roof piece which is hygienic and safe to use and can be manufactured at low cost, more particularly, one which prevents ingress of germs, dust, water, etc., and which can be opened at a touch and can be removed completely from the bottle top. CONSTITUTION:The subject relates to a cap seal 12 having a roof piece, designed to be put on a bottle top 3 and fixed thereto by shrinking under heat. A roof piece 8 and a cylindrical, heat-shrinkable film 14 whose upper edge is bent inward are joined at the bent upper edge 14a of the latter. In the side of the cylindrical heat-shrinkable film 14 two grooves 15, 15 are formed vertically with a space therebetween and the space between the grooves 15, 15 is elongated downward so that its lower end forms a pull tab 11. Along the bent upper edge 14a enclosing the roof piece 8 a circular groove 16 is formed above and in continuation of the grooves 15.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a cap seal with a top surface which covers a bottle head such as a milk bottle and hermetically seals a drinking mouth.

[0002]

2. Description of the Related Art Generally, a paper lid is attached to the mouth of a bottle containing a drink such as milk or juice to seal the inside. Is directly
It comes in contact with the mouth, so it is sold with a cap seal on it to keep it clean.

For example, a conventional cap seal is shown in FIG.
As shown in 19, heat shrinkable film 1 such as vinyl chloride
Is placed on the bottle head 3 of the beverage bottle 2 and heat-shrinked to form the cap seal 4. However, in this structure, since the cap seal 4 spreads and is pulled out from the bottle head 3 as it is, the paper lid 5 is removed, foreign matter is mixed, and the paper lid 5 is fitted into the drinking mouth portion 6 again. 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 was opened.

Due to such a problem, in recent years
A cap seal 7 with a top surface as shown in 20 is often used. This is formed by forming a perforation 10 in an annular shape on the upper side surface of a cylindrical heat-shrinkable film 9 whose upper surface is closed and whose top surface is 8 and which is provided with a U-shaped notch and is provided with a knob.
Formed 11. As shown in FIG. 21, the cap seal 7 with the top face is fitted with the paper lid 5 on the mouth part 6 of the beverage bottle 2 containing the beverage, and then the cap head 7 with the top face is put on the bottle head 3. It is fixed by applying heat to cause heat shrinkage.

When a drink is to be drunk, the knob 11 provided on the side surface of the cap seal 7 with the top surface is picked up with fingers and pulled up, and the force from the knob 11 is distributed to the perforations 10 where the perforations are made. The tearing of 10 causes the upper portion on the top surface 8 side to be removed as shown by the phantom line in one step to expose the drinking portion 6. Therefore, once the top-faced cap seal 7 is opened, it breaks and has the advantage that it cannot be closed again.

However, in this structure, the perforations 10 are formed in a ring shape on the upper side surface of the cylindrical heat-shrinkable film 9, and the perforations 10 expand due to the heat shrinkage. It was unsanitary because there was a problem that dirty water or the like entered and adhered to the drinking portion 6 where the mouth directly touched. Further, when separated, the top surface 8 side above the perforations 10 is removed, but the heat-shrinkable film 9 below the perforations 10 remains on the bottle head 3 and remains on the periphery of the drinking portion 6. The notched portion of the perforation 10 is exposed. For this reason, it is dangerous because when the beverage is drunk, it may hit the jagged portion and the lips may be cut off.

[0007]

DISCLOSURE OF THE INVENTION The present invention eliminates the above-mentioned drawbacks, prevents entry of bacteria, dust, water, etc., and is hygienic, and it can be opened with one touch. To provide a cap seal with a ceiling that is completely removed from the product, is safe, and is inexpensive to manufacture.

[0008]

DISCLOSURE OF THE INVENTION The present invention relates to a cap seal with a top surface for covering a bottle head with heat shrinkage and fixing, and the upper edge of a cylindrical heat-shrinkable film having an upper edge bent inward. A disc-shaped top surface is joined to the bent portion, two concave grooves are formed in the longitudinal direction at intervals on the side surface of the cylindrical heat-shrinkable film, and a lower end between the concave grooves is formed. A knob is formed by extending downward or by providing a slit on the lower side of the concave groove, and a circular concave groove is formed continuously on the upper part of the concave groove in the upper edge bent portion surrounding the top surface. It is characterized by that.

[0009]

In the cap seal with the top surface of the present invention, when the bottle head of the bottle is covered with hot air, the cylindrical heat-shrinkable film shrinks and is fixed. Therefore, the bottle head is completely covered with the cap seal with the top surface and the hermeticity is maintained. When opening the bottle, pull the knob formed on the bottom of the cap seal with the top surface with your fingers and pull it upwards.Since there are vertical grooves on both sides of this, this groove will tear up. go. When the knob portion is further pulled up, the force concentrates on the circular concave groove formed in the upper edge bent portion that is continuous with the vertical concave groove, and the concave groove tears toward both sides from here. Therefore, when the circular groove is torn in half or more, both sides of the groove which has already been torn are opened, and the whole can be removed from the bottle head with one touch.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to FIGS. Figures 13 to 15 show cap seals with top surface
The upper surface of the heat-shrinkable film 14 is bent inward, and the top surface 8 is joined to the upper edge bending portion 14a of the cylindrical heat-shrinkable film 14 and the space is provided on the side surface of the heat-shrinkable film 14. And two concave grooves 15 and 15 are formed in the vertical direction, and the concave grooves 15 and 15 are formed.
The space between them is extended downward to form a knob portion 11.
In addition, a circular groove is formed in the upper edge bent portion 14a so as to surround the disc-shaped top surface 8 continuously with the upper portions of the groove 15 in the vertical direction.
16 is formed. As the heat-shrinkable film 14, for example, a polystyrene film (OPS) or the like is used, and when the thickness thereof is, for example, about 80 μm, it is desirable that the depth of the groove 15 and the groove 16 is about 40 μm.

In the process of manufacturing the cap seal 12 with the top face having the above structure, first, as shown in FIGS. 1 and 2, a hollow cylindrical body made of aluminum is formed into a stepped shape having a small outer diameter. Prepare mold 17.

Separately from this, as shown in FIG. 3, for example, a sheet of polystyrene film is bent into a cylindrical shape and the overlapping portions are heat-sealed, and the cylindrical body is transversely arranged at predetermined intervals along its longitudinal direction. Then, the side opposite to the heat-sealed portion is cut into an L-shape to form a cylindrical heat-shrinkable film 14 having the knob portion 11 as the knob portion 11. As shown in FIG. 4, the heat-shrinkable film 14 having a cylindrical shape is continuously cut in this manner.
Between the knob portion 11 extending to the lower portion and the cutout portion 13 from which the knob portion 11 of the adjacent cylindrical heat-shrinkable film 14 is removed, and two pieces are provided along both sides of the knob portion 11. The concave grooves 15, 15 are formed in parallel.

Next, as shown in FIG. 5, a cylindrical heat-shrinkable film 14 is inserted into the upper part of the molding die 17 and the upper part is slightly projected. Next, hot air is sent to the heat-shrinkable cylindrical film 14
When contracted, it contracts along the mold 17 as shown in FIGS. 6 and 7, and an upper edge bent portion 14a having an upper edge bent inward is formed.

Next, as shown in FIG. 9, a ring-shaped felt is attached to the bottom surface, and the adhesive 19 is impregnated into the coating apparatus.
When 18 is pressed from above the molding die 17 and applied to the heat-shrinkable upper edge bent portion 14a of the cylindrical heat-shrinkable film 14,
As shown in FIG. 8, the adhesive 19 is applied in a ring shape on the upper surface of the upper edge bent portion 14a. Thereafter, as shown in FIGS. 10 and 11, the disk-shaped top surface 8 is bonded onto the upper edge bent portion 14a with an adhesive 19.

Thereafter, as shown in FIG. 12, when an upper die 21 having a heater built therein and an annular protrusion 20 having a diameter larger than that of the top surface 8 is formed on the bottom surface, the upper die 21 is pressed onto the forming die 17, as shown in FIG. As shown in FIGS. 13 to 15, a circular groove 16 surrounding the top surface 8 is formed on the surface of the upper edge bent portion 14a, and the groove 16 is formed in the cylindrical heat-shrinkable film 14 in the longitudinal direction. Two recessed grooves
It becomes a concave groove continuous with 15, 15.

The cap seal 12 with the top face having the above structure is shown in FIG.
As shown in 16, when the paper lid 5 is fitted into the drinking mouth portion 6 of the beverage bottle 2 containing the beverage, the bottle head portion 3 is covered with hot air,
The cylindrical heat-shrinkable film 14 shrinks and is fixed. For this reason, the bottle head 3 is completely covered with the cap seal 12 with the top surface and has excellent sealing performance. Since there is no perforation 10 as in the conventional case, various germs, fine dust, dirty water, etc. can enter inside. Without hygiene.

When drinking beverage, cap seal with top surface
When the knob portion 11 extending downward from 12 is picked up by fingers and pulled up, two vertical grooves 15 are formed on the side surfaces of the heat-shrinkable film 14 on both sides. Is weak, and the grooves 15, 15 tear upward. When the knob portion 11 is further pulled up, the upper edge bent portion 14 which is continuous with the concave grooves 15 and 15
Since the circular concave groove 16 formed in a is thin and hardened by heat, the force concentrates here and the concave groove 16 extends from here to the left and right sides.
Is torn.

For this reason, when the half or more of the circular groove 16 is torn, it can be opened to both sides of the already torn groove 15, 15 as shown in FIG. 17, and the whole can be removed from the bottle head 3 with one touch. . For this reason, unlike the conventional cap seal 7 with the top face having the perforations 10 shown in FIG. 21, the lower portion does not remain, and it is safe even if the mouth is directly contacted with the drinking portion 6 and the lips are not damaged. Further, once the knob portion 11 is pulled, the cap seal 12 with the top surface is broken and cannot be closed again.

FIG. 18 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 14, and the concave groove 15,
Slits 22 and 22 are provided on the lower side of 15 and a tab 11 is provided between them. When this is put on the bottle head 3 and heat-shrinked, the knob portion 11 jumps up to facilitate the knob.

If a polystyrene film is used as the heat-shrinkable film 14, chlorine gas is not generated unlike vinyl chloride, and there is no problem in terms of pollution, but another heat-shrinkable film may be used. In the present invention, the groove
15 and the groove 16 are not limited to the method of forming by hot pressing,
It may be formed by a cutter. Further, the cap seal with the top surface of the present invention can be applied not only to a beverage bottle but also to a bottle filled with volatile oil or the like.

[0021]

As described above, according to the cap seal with the top surface according to the present invention, since the inside is hermetically sealed without perforations, it is sanitary by preventing invasion of germs, dust, water and the like. At the same time, it can be opened with one touch, and after opening it is completely removed from the bottle head, so it is not possible to reseal and it is safe, and the knob part is integrally formed on the side surface of the cylindrical heat-shrinkable film. Therefore, it can be manufactured at low cost.

[Brief description of drawings]

FIG. 1 is a plan view showing a molding die for producing a cap seal with a top surface of the present invention.

FIG. 2 is a front view showing the forming die of FIG.

FIG. 3 is a plan view showing a state where a cylindrical heat-shrinkable film is being cut.

FIG. 4 is a perspective view showing a cylindrical heat-shrinkable film.

FIG. 5 is a front view showing a molding die on which a cylindrical heat-shrinkable film is mounted.

FIG. 6 is a plan view showing a molding die on which a cylindrical heat-shrinkable film having an upper edge bent portion is mounted.

FIG. 7 is a front view showing the molding die shown in FIG.

FIG. 8 is a plan view showing a state in which an adhesive is circularly applied to an upper edge bent portion of a cylindrical heat-shrinkable film.

FIG. 9 is a front view showing a state in which an adhesive is applied to an upper edge bent portion of a cylindrical heat-shrinkable film.

FIG. 10 is a plan view showing a state in which the top surface is bonded to the upper edge bent portion.

11 is a front view showing the cylindrical heat-shrinkable film of FIG. 10.

FIG. 12 is a front view showing a state where a circular groove is formed in an upper edge bent portion.

FIG. 13 is a plan view showing a cap seal with a top surface of the present invention.

FIG. 14 is a front view of the cap seal with the top surface shown in FIG. 13.

FIG. 15 is a perspective view of the cap seal with the top surface shown in FIG. 13.

16 is a perspective view showing a beverage bottle to which the cap seal with the top surface of FIG. 15 is attached.

17 is a perspective view showing a state where the cap seal with the top surface of FIG. 16 is removed.

FIG. 18 is a perspective view of a cap seal with a top surface according to another embodiment of the present invention.

FIG. 19 is a front view showing a bottle head part to which a conventional cap seal is attached.

FIG. 20 is a perspective view showing a conventional cap seal with a top surface.

21 is a front view showing a bottle head to which the conventional cap seal with a top surface shown in FIG. 20 is attached.

[Explanation of sign]

 1 Heat-shrinkable film 2 Beverage bottle 3 Bottle head 4 Cap seal 5 Paper lid 6 Drinking area 7 Cap seal with top surface 8 Top surface 9 Cylindrical heat-shrinkable film 10 Perforation 11 Knob part 12 Cap with top surface Seal 13 Cutout 14 Cylindrical heat-shrinkable film 14a Upper edge bent part 15 Recessed groove 16 Circular recessed groove 17 Mold 18 Coating device 19 Adhesive 20 Protrusion 21 Upper mold 22 Slit

Claims (1)

[Claims] 1. A cap seal with a ceiling surface for covering a bottle head to be heat-shrinked and fixed, wherein a disc-shaped cap is formed at the upper edge bent portion of a cylindrical heat-shrinkable film having an upper edge bent inward. The top surface is joined to form two recessed grooves in the longitudinal direction at intervals on the side surface of the cylindrical heat-shrinkable film, and the lower end between the recessed grooves is extended downward or recessed. A slit is provided on the lower side of the groove to form a knob, and a circular groove is formed continuously on the upper part of the groove, and a circular groove is formed in the upper edge bent part surrounding the top surface. Cap seal.