JPH07172450A - Cap seal with top cover - Google Patents

Abstract

PURPOSE:To provide a safe and hygienic cap seal with the top cover which prevents bacteria, dusts, water, etc., from penetrating and can be opened by one-touch and completely removed from the bottle head after opening. CONSTITUTION:In a cap seal with the top cover thermocontracting and fitting on a bottle head 3, the upper end of a tear-tape 13 bent at the upper end is stuck to the periphery of a circular disk-form top face 8 and the top face 8 is connected to the under-side of the folded part 14a at the upper edge of a cylindrical thermocontracting film 14 bent inward at the upper edge and the lower end of tear-tape 13 is extended down from the lower part of the inside of the thermocontracting film 14. And vertical recessed grooves 15 are formed on the thermocontracting film 14 along both side edges of the taer-tape 13. In this way, a circular recessed groove 16 is formed at the folded part 14a of the upper edge surrounding the top face 8, subsequently to the upper part of recessed 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 18, 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 is removed 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 it was put on the bottle head 3 as it was, there was a problem in that it was not apparent from the appearance that it was opened.

Due to such a problem, in recent years
A cap seal 7 with a top surface as shown in 19 is often used. This is one in which 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 whose upper surface is the top surface 8, and a U-shaped cut portion 11 is formed therein. As shown in FIG. 20, 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, when the notch 11 provided on the side surface of the cap seal 7 with the top surface is pinched with a finger and pulled up, the force is dispersed from the notch 11 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. It provides a safe top cap seal that is completely removed from the.

[0008]

According to the present invention, in a cap seal with a top surface for covering a bottle head by heat shrinking and fixing, the upper end of a tear tape having an upper end bent at the peripheral edge of a disk-shaped top surface. The top surface of the heat-shrinkable film is bonded below the upper edge of the cylindrical heat-shrinkable film with the upper edge bent inward, and the lower end of the tear tape is placed below the inner lower part of the heat-shrinkable film. The heat-shrinkable film is extended to form a vertical concave groove along both side edges of the tear tape, and a circular concave groove is formed continuously in the upper part of the concave groove on the upper edge bent portion surrounding the top surface. It is characterized in that a groove is formed.

[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, hold the bottom end of the tear tape that extends below the cap seal with the top surface with your fingers and pull it upwards, because the heat-shrinkable film on both sides has vertical grooves on the sides. , This groove tears upward.
When the tear tape is further pulled up, the force concentrates on the circular concave groove formed in the upper edge bent portion which 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. FIG. 15 shows a cap seal 12 with a top surface, which has a cylindrical shape in which the upper end of a tear tape 13 whose upper end is bent is adhered to the peripheral edge of a disk-shaped top surface 8 and the upper edge is bent inward. The top surface 8 is joined under the upper edge bent portion 14a of the heat-shrinkable film 14 so that the lower end of the tear tape 13 extends downward from the inner lower part of the heat-shrinkable film 14.
The heat-shrinkable film 14 is formed with two vertical recessed grooves 15, 15 along both side edges of the upper edge bent portion 14a continuously surrounding the top surface 8 of the recessed grooves 15. A circular concave groove 16 is formed in the. As the heat-shrinkable film 14, for example, polystyrene film (OPS) or the like is used, and when the thickness thereof is, for example, about 80 μm, the groove
The depth of the groove 15 and the groove 16 is preferably about 40 microns.

In the process of manufacturing the cap seal 12 with the top surface having the above structure, first, as shown in FIGS. 1 and 2, the upper side of the hollow cylindrical body 18 made of aluminum is formed into a step with a small outer diameter. , A plurality of vacuum holes 19 are opened on the upper surface, a vacuum hole 19 is also opened vertically on the upper side surface, and a positioning groove 20 is vertically formed on the lower side surface having a large outer diameter below Prepare mold 21. The mold 21 is connected to a suction pump (not shown).

Next, as shown in FIG. 2, the Tare tape 13 having the surface coated with hot melt is aligned with the positioning groove 20 of the molding die 21 with the hot melt side facing outward, and the upper part is slightly protruded to be attached. The holes 19 ... In this case, the tear tape 13 is made of a plastic tape which does not shrink by heat. Next, as shown in FIGS. 3 and 4, the upper end of the tear tape 13 is bent and sucked by the vacuum hole 19 formed on the upper surface of the mold 21. Thereafter, as shown in FIGS. 5 and 6, when the disk-shaped top surface 8 is placed on the upper surface of the molding die 21, the vacuum holes 19 are sucked by the vacuum holes 19.

Next, as shown in FIGS. 7 and 8, a cylindrical heat-shrinkable film 14 is mounted on the upper side of the mold 21. This heat-shrinkable film 14 is formed by bending a single sheet into a cylindrical shape, heat-sealing the overlapped portions, and two concave grooves 15 having the width of the tear tape 13 on the side facing the heat-sealed portion, 15 are formed in parallel. The cylindrical heat-shrinkable film 14 is attached to the molding die 21 with its side on which the concave grooves 15, 15 are formed aligned with the tear tape 13 and with its upper part slightly projected. Thereafter, when hot air is sent to shrink the cylindrical heat-shrinkable film 14, it shrinks along the mold 21 as shown in FIG. 9 and FIG. 10, and the upper edge is bent inward. 14a is formed.

Thereafter, as shown in FIG. 12, when an upper die 23 having a built-in heater and an annular protrusion 22 having a diameter larger than that of the top surface 8 is formed on the bottom surface, the upper die 23 is pressed onto the forming die 21. As shown in FIG. 11, a circular concave groove 16 surrounding the top surface 8 is formed on the surface of the upper edge bent portion 14a, and the concave groove 16 has two concave grooves formed in the cylindrical heat-shrinkable film 14. The grooves 15 and 15 intersect to form a continuous concave groove. At the same time, the tear tape 13 and the top surface 8 are bonded together by hot melt, and the top surface 8 and the upper edge bent portion 14a on the top surface 8 are integrally heat-sealed to each other so that the top surface cap seal 12 shown in FIGS. Is formed.

The cap seal 12 with the top surface 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 lower end of the tear tape 13 extending downward of 12 is pinched with fingers and pulled up, two longitudinal grooves 15, 15 are formed on the side surfaces of the heat shrinkable film 14 on both sides. The strength here is weak, and the grooves 15, 15 tear upward. When the tear tape 13 is further pulled up, the circular concave groove 16 formed in the upper edge bent portion 14a which is continuous with the concave grooves 15 and 15 is thin and heat-cured, so that the force concentrates here and the left and right sides from here. The concave groove 16 tears toward.

Therefore, when the circular recessed groove 16 is torn in half or more, both sides of the already torn recessed grooves 15, 15 are opened 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 surface having the perforations 10 shown in FIG. 20, 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 tear tape 13 is pulled, the cap seal 12 with the top surface is broken and cannot be closed again.

If a polystyrene film is used as the heat-shrinkable film 14, chlorine gas is not generated,
Other heat-shrinkable films may be used without any pollution problem. In the present invention, the concave groove 15 and the concave groove 16 are not limited to the method of forming by hot pressing, but 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.

[0019]

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 safe because it cannot be sealed again.

[Brief description of drawings]

FIG. 1 is a plan view showing a molding die to which a tear tape according to an embodiment of the present invention is attached.

FIG. 2 is a front view showing the molding die shown in FIG.

FIG. 3 is a plan view showing a molding die in which an upper end of a tear tape is bent and attached.

FIG. 4 is a front view showing the forming die shown in FIG.

FIG. 5 is a plan view showing a molding die in which a top surface is superposed on the upper surface.

FIG. 6 is a front view showing the molding die of FIG.

FIG. 7 is a plan view showing a molding die to which a cylindrical heat-shrinkable film is attached.

8 is a front view showing the molding die of FIG. 7. FIG.

FIG. 9 is a plan view showing a molding die on which a cylindrical heat-shrinkable film having an upper edge bent portion is mounted.

10 is a front view showing the molding die shown in FIG. 9.

FIG. 11 is a plan view showing a molding die in which a heat-shrinkable film having a circular groove formed in an upper edge bent portion is mounted.

FIG. 12 is a front view showing the forming die shown in FIG. 11 and an upper die having a circular recessed groove formed in an upper edge bent portion of the heat-shrinkable film attached thereto.

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

FIG. 19 is a perspective view showing a conventional cap seal with a top surface.

20 is a front view showing a bottle head to which the conventional cap seal with a top surface shown in FIG. 19 is attached.

[Explanation of sign]

 1 Heat-shrinkable film 2 Beverage bottle 3 Bottle head 4 Cap seal 5 Paper lid 6 Drinking part 7 Cap seal with top surface 8 Top surface 9 Cylindrical heat-shrinkable film 10 Perforations 11 Notch 12 Cap with top surface Seal 13 Tear tape 14 Cylindrical heat-shrinkable film 14a Upper edge bent portion 15 Recessed groove 16 Circular recessed groove 17 Hollow cylindrical body 19 Vacuum hole 20 Positioning groove 21 Mold

Claims (1)

[Claims] 1. In a cap seal with a top surface for covering a bottle head with heat shrinkage and fixing, the upper edge of a tear tape whose upper end is bent is adhered to the peripheral portion of the disk-shaped top surface, and the upper edge is placed inside. The top surface is joined under the bent portion of the upper edge of the cylindrical heat-shrinkable film that is bent into a shape, and the lower end of the tear tape is extended below the inner lower part of the heat-shrinkable film, The heat-shrinkable film is formed with a vertical groove along the groove, and a circular groove is formed continuously at the upper part of the groove at the upper edge bent portion surrounding the top surface. Cap seal with top surface