JPH10297657A - Plug-type sealing lid having illegal unsealing preventive means - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sealable lid capable of being easily unsealed at a low cost by providing a sealed cylindrical part in which a laminate covered with the synthetic resin on each surface of an aluminum foil is formed in cylindrical sleeve shape on an outer circumferential surface of a flange part of a plug body, and forming a tearing knob piece on its lower end part. SOLUTION: A plug body part 3 and a top lid part 4 are formed by injection molding of the synthetic resin, and closely joined with each other to form a plug body. A cylindrical sleeve piece is formed by a laminate covered with the synthetic resin on each surface of an aluminum foil, and a tearing knob piece for unsealing is provided on a lower cylindrical wall surface. The formed sealed cylinder 5 is closely attached to a flange part of the plug body, and joined with its outer circumferential part to form a sealed lid body, and fitted to a neck part 6 of a container, and a cut part 5f is sealed and reduced for sealing. In unsealing the cylinder, the sealed cylinder 5 is torn along the cutting line by diagonally pulling the tearing knob piece to separate the lower part from the cutting part 5f.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plug-shaped hermetic lid which is pushed into a cylindrical mouth and neck of a bottle-shaped hollow container to be fitted therewith and hermetically closed, and more particularly to an aluminum foil. A plug-shaped seal is formed by fitting a tube-shaped laminated body made of a synthetic resin layer onto the outer peripheral surface of the flange of the plug in a skirt shape and welding to form a tamper-evident prevention piece. It relates to a closed lid that has been made.

[0002]

2. Description of the Related Art Crown caps and cork stoppers have conventionally been used as sealing lids for sealing the mouth and neck of glass bottles containing liquid beverages such as alcoholic beverages, cider and juice, seasonings and other liquids. To open these lids, special tools such as bottle openers are required, and once opened, use up the entire amount, transfer the remaining one to another container, or use a special stopper. It had to be stored by means of sealing, which was inconvenient. However, in recent years, not only glass bottles but also various containers made of synthetic resin have been used as hollow containers for storing liquids, and a sealing lid for preventing opening of these containers has been prevented. Various types of closed lids other than crowns have been invented and used.

[0003] As a conventional lid for fitting and sealing the mouth and neck of such a bottle-shaped hollow container, a thin metal plate such as aluminum is formed in a cup shape or a hat shape.
A closed body formed by forming an incision groove or cutting line on the trunk surface,
The container is sealed over the mouth and neck of the sealed container by wrapping or tapping, and when opening the container, the container is twisted off, or as shown in FIG. 8 described in JP-A-54-100887. An aluminum-covered tubular body 13 is fitted to the synthetic resin bottle stopper main body 12 from above the flange portion 12a to form a cover body 11, and the tubular wall 13 has an opening knob 1 for opening.
The container is prevented from being opened improperly by plugging the closed lid body provided with 3a, the breaking line 13b and the cutting line 13c into the mouth and neck of the container and then winding the cylindrical portion. In general, a sealing lid having a function of performing the function is widely used.

[0004] However, all of these lids are subjected to deep drawing of a thin metal plate of aluminum or the like or complicated cutting lines or perforations on the body wall in the manufacturing process. Since many work steps such as application are required, the cost increases. In addition, such a lid can be opened by tearing with a fingertip without using a special tool when opening, but on the other hand, a cut surface of the torn metal may be inadvertently touched with a fingertip or the like. It may cut,
There is a problem that consumers may be troubled.

In order to solve such a problem, Japanese Unexamined Patent Publication (Kokai) No. 60-13656 discloses a skirt-shaped envelope formed from a metal plate in the above-mentioned closure. Instead of using a synthetic resin, the plug body and the skirt-shaped envelope section are integrally formed using a synthetic resin, and the outer surface from the canopy of the plug body to the sealing / shrinking position of the envelope is covered with a metal plate, There is a sealing lid in which a canopy and a sealing squeezing ring are separated from each other, and a cutting line is engraved from the lower end of the sealing cylinder to a position for tightening. Further, as shown in Japanese Patent Application Laid-Open No. 4-114872, a synthetic resin plug is fitted to the mouth and neck of a glass container, and a synthetic resin and an aluminum foil, which are adhesive to glass, are placed on the plug. There is a sealing lid in which the laminated body is covered with a cap formed according to the shape of the mouth and neck of the container, and the cap is heat-sealed and sealed on a glass surface.

[0006] The lid thus constructed can be easily opened without the need for a dedicated opening device, none of which cuts the fingertip or the like, and the opened plug is used again. However, the former sealing lid must be tightly wound so as to separate the metal plate into a canopy and a sealing draw ring,
Since the breaking line must be formed so that the sealing ring is broken when the sealing tube is cut, there is a problem that the processing of the metal plate is complicated and costly. In addition, the latter lid is a heat-sealed cap made of a laminated body of aluminum foil.If the cap is peeled off once and opened, the plug is refitted and sealed, the sealing performance is safely maintained. It is impossible to keep.

[0007]

An object of the present invention is to provide a skirt-shaped envelope made of a laminate of synthetic resin and aluminum foil and a plug body made of synthetic resin without using a metal plate such as aluminum. Combining them together to form a lid,
It can be easily opened, can be safely and reliably opened without cutting the fingertips, etc., and can be easily resealed, and can maintain the sealing performance. A sealing lid is provided.

[0008]

Means for Solving the Problems A laminate formed by covering both sides of an aluminum foil with a synthetic resin is provided on the outer peripheral surface of a flange portion of a synthetic resin plug body which can be removably fitted into an opening of a hollow container. A sealing lid body is formed in a structure in which the sealing sleeve portion formed into a cylindrical sleeve shape is tightly joined by squeezing or high-frequency welding or the like, and a tearing knob piece for opening is formed at the lower end of the sealing sleeve. In some cases, the envelope portion is formed so as to be easily removed by a squeezing process or a high-frequency welding portion by pulling up the tearing knob piece. In addition, if necessary,
A structure in which a perforation or a break line is provided spirally or obliquely from the knob to the tightly joined portion of the envelope portion so that the envelope can be easily cut.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A plug body 3 which is formed by injection molding synthetic resin and a canopy part 4 are tightly joined to form a plug body 2 which can be fitted into an opening of a hollow container. Then, a cylindrical sleeve piece 5A is formed from a laminate 5c in which both surfaces of an aluminum foil 5a are coated with a synthetic resin 5b, and a tear-off knob piece 5d for opening is formed on the lower cylindrical wall surface of the sleeve piece 5A. If necessary, a spiral or oblique perforation or a break line 5e is formed in the sealing body 5 so as to be continuous therewith to form the sealing body 5 and the sealing body 3a is connected to the plug flange 3a.
And a canopy flange 4a which is joined to the flange 2a of the plug body 2 which is tightly fitted to the flange 2a to form a sealing tubular portion 5 which is joined to the outer peripheral surface of the plug body flange 2a by high frequency welding or the like. Lid 1 Then, after the sealing lid 1 is fitted to the mouth and neck 6 of the hollow container containing the liquid, the sealing cylinder 5
The cut portion 5f of the upper cylindrical wall is sealed by drawing. The hollow container sealed in this manner, the tearing knob piece 5d is pinched with a fingertip and pulled up in an oblique direction, whereby the sealing tube portion 5 is torn along the breaking line 5e, and the cut portion shrunk. It is cut off in the circumferential direction and the sealing and squeezing part 5
The lower part is separated from f and the sealing lid 1 is opened from the mouth and neck 6 of the container.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A lid according to the present invention will be described below based on a specific embodiment with reference to the drawings. In the present invention, the plug body 3 and the canopy part 4 constituting the plug main body 2 of the sealing lid 1 as shown in FIGS. 1 and 2 are formed by injection molding of a thermoplastic synthetic resin, respectively. The stopper portion 3 has a flange portion 3 at the peripheral edge of the upper end formed in a cup shape.
a, an engaging protrusion 3b and an engaging concave groove 3c are formed. Similarly, on the canopy part 4, a flange 4a and an engaging protrusion 4b and an engaging concave groove 4c Is formed,
The two members formed in the structure as shown in FIG. 3 are easily brought into close contact with each other by fitting the respective engaging projections into the engaging concave grooves to form the plug main body 2. It is joined and formed on the flange 2a of the plug body 2.

Next, using a laminate 5c in which a synthetic resin layer 5b is formed on both surfaces of an aluminum foil 5a, which is one of the features of the present invention, is fitted to the flange of the plug body 2 as shown in FIG. 1 and 7, a tear-off knob 5d as shown in FIGS. 1 and 7 is formed on the lower wall surface of the sleeve 5A.
A spiral or oblique perforation formed continuously or a breaking line 5e for cutting is provided at the end of d to form the sealing cylinder 5. Then, as shown in FIG. 4, after setting the stopper body 2 on the receiving stand 8b of the welding jig, the cylindrical sleeve forming the sealing cylinder 5 is fitted to the outer peripheral surface of the flange of the stopper body 2. After being tightened and fixed, the inner surface of the sealing cylinder 5 is welded to the outer peripheral surface of the flange 2a of the plug body 2 by pressing with the high frequency generating jig 8a, and the flange 2a of the plug body 2 is also attached to the canopy edge 4a. A sealing lid 1 suitable for being sealed by being welded to a high frequency to form a sealing tubular portion and fit into the mouth and neck of the hollow container for sealing.
To form

The lid 1 of the above-described embodiment has a cylindrical sleeve 5A formed by laminating a synthetic resin layer 5b on an aluminum foil 5a, and a high-frequency jig on the outer peripheral surface of the flange of the plug body 2. Although welding was performed using the above, it is also possible to perform caulking joining using a roller instead of such high frequency welding. That is, as shown in FIG. 5, after setting the plug body 2 in the receiving jig 9 for caulking, the sealing cylinder 5 made of the cylindrical sleeve 5A is provided on the outer peripheral surface of the flange of the plug body 2.
Are fitted and fixed, and a sealing cylinder 5 is pressed by a caulking roller 7a to a joining portion 2b of the stopper body portion 3 and the canopy portion 4 of the stopper body 2 to be joined by caulking and sealing. It can be formed in the lid 1 having the cylindrical portion 5. When the caulking process is performed by the roller 7a or the like as described above, the plug main body 2 is formed so that a slight concave groove is formed in the joint surface between the plug body portion 3 and the canopy portion 4, H
It is preferable to form a rigid cylindrical sleeve 5A using a somewhat thick aluminum foil 5a or a resin layer such as an AT tube from the viewpoint of increasing the joining force of the sealing tube portion 5.

In order to form the cylindrical sleeve body 5A used in the above-mentioned embodiment by the laminate 5c in which the aluminum foil 5a is covered with the synthetic resin layer 5b, the Japanese Patent Publication No. 47-4199 is used.
No. 8 and JP-B 1-332109,
A laminated sheet material in which the surface of a sheet-like aluminum foil is coated with a soft thermoplastic resin such as polyethylene was joined at both ends by rounding according to the outer diameter of the flange of the plug body so that the resin layer was on the inside. Heat welding in the state and forming it into a tubular body,
The outer surface of the tubular body is extruded and coated with a thermoplastic resin to form a laminated aluminum cylinder. The cylindrical aluminum laminate formed in this manner is cut into an appropriate length in accordance with the size of the sealing tube portion to form a cylindrical sleeve.

The thermoplastic resin layer, which is laminated on the surface of the sheet-like aluminum foil and forms the inner layer of the cylindrical body, has excellent fusion-bonding properties with the flange surface of the plug body 2 of the sealing lid 1. It is important to laminate using a soft synthetic resin, and to coat the outer layer of the cylindrical body with a synthetic resin having good label sticking properties and printability. By laminating aluminum foil using such a synthetic resin, the cylindrical sleeve 5A is formed.
It is possible to strongly maintain the adhesive force between the cap and the plug body 2 and to apply various patterns and prints to the surface of the sealed lid 1 and to attach a trademark or a precautionary note. Becomes

Thus, as shown in FIG. 1 or FIG. 2, the sealing lid 1 of the present invention formed as described above, as shown in FIG. 6
After the plug is fitted and fitted, sealing and squeezing processing is performed at the position of the cut portion 5f of the upper cylindrical wall of the sealing cylinder portion 5 by the caulking roller 7b, and the container is sealed and fixed. In order to open the thus-sealed hollow container using the sealing lid 1 of the present invention, as shown in FIG. 7A, the tearing knob 5d is picked up with a fingertip and pulled upward. As a result, the sealing tube portion 5 is torn from the notch portion to the cutting portion, or the lower portion of the sealing tube portion 5 is cut along the breaking line 5e as shown in FIG. Since the lower part is removed from the cut and contracted cut part 5f,
The closure 1 is easily opened from the mouth and neck 6 of the container.

The sealing body 1 of the present invention having the above-described structure is a composite laminate 5c in which a thermoplastic synthetic resin is laminated on aluminum instead of the conventional sealing body 13 made of a thin metal plate.
A sealing sleeve portion 5 formed of a cylindrical sleeve body 5A made of is formed by tightly bonding to a plug body 2 formed of a thermoplastic synthetic resin, and a tearing tab is provided at a lower end of the sealing sleeve portion 5. 5d, the sealing cover 1 sealed with the mouth and neck 6 of the hollow container can be easily opened by grasping the tear-off knob 5d and pulling it up. The sealing section 5 can be completely peeled off from the flange 2a of the plug body 2 without cutting the fingertip or the like.

As described above, when the aluminum synthetic resin composite laminate 5c is laminated with a synthetic resin layer which can be easily torn, even if the break line 5e is not continuously provided, the tearing is performed. It can be easily opened by grasping the knob piece 5d and pulling it up. However, if the knob piece 5d is provided with a continuous perforation or a break line 5e, the fingertip or the like may be cut further. It can be easily opened without any need.

Since the closure body of the present invention is made of a synthetic resin, the stopper body is easily deformed elastically at the time of plugging. Therefore, it is not limited to a glass bottle, and the opening of a synthetic resin or other hollow container may be used. In addition, the inner solution can also be used as a sealing lid for detergents, cosmetics, and the like, in addition to beverages such as alcoholic beverages and juices. Further, according to the present invention, the opened lid 1 can be fitted into the opening again, and the sealed lid 1 can be sealed and stored in the same manner as before opening. Furthermore, the closure of the present invention is compared with a conventional one formed by drawing and processing a metal plate as described above, or a combination of an aluminum foil and a synthetic resin, or a molding using an adhesive. It can be manufactured at low cost.

[0019]

As described above, the container sealed by using the sealing body of the present invention does not require the use of an opening tool, and the tearing knob piece provided at the lower end of the sealing tube portion. By simply grabbing and pulling up, you can easily cut off the envelope and open it, eliminating the risk of cutting your fingertips, etc. Not even.

Since the lid of the present invention can be fitted to the rear portion of the original container again after being opened and can be safely sealed and stored, the internal solution can be transferred to another container. No need to worry about relocating or wasting. In addition, since the sealing portion of the sealing body of the present invention is formed by laminating a synthetic resin layer on an aluminum foil, when a transparent resin layer is provided, it looks beautiful and shines with reflection, and the resin layer is printed. And labels can be attached, so that various decorations can be applied.

[Brief description of the drawings]

FIG. 1 (a) is a side view showing a first embodiment of a lid according to the present invention.

FIG. 1 (b) is a side view of the sealing body of FIG. 1 (a) in which a cutting line is provided.

FIG. 2 is a longitudinal sectional view of the sealing lid shown in FIG. 1 (a).

FIG. 3 is a vertical sectional view showing components of the lid of the present invention.

FIG. 4 is an explanatory view in which a sealing cylinder is joined to a plug body by high-frequency welding.

FIG. 5 is an explanatory view in which a sealing cylinder is joined to a stopper main body by a caulking roller.

FIG. 6 is a cross-sectional view in which the lid of the present invention is sealed at the mouth and neck of a container.

FIG. 7 (a) is an explanatory view of opening the sealing lid shown in FIG. 1 (a).

FIG. 7 (b) is an explanatory view of opening the sealing lid shown in FIG. 1 (b).

FIG. 8 is a view showing a conventional aluminum lid.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Sealing body 2 Plug body 3 Plug body part 4 Canopy part 5 Sealing cylinder part 5A Cylindrical sleeve 5c Aluminum laminated body 6 Container mouth neck part 7a Roller 8a High frequency welding receiving jig 9 Roller caulking jig 11 Lid body 12 Plug main body 12a flange 13 cylindrical body 13a knob 13b cutting line 13c scribe line

Claims (7)

[Claims] 1. A sealing body made of a laminate of an aluminum foil and a synthetic resin is tightly joined in a skirt shape to the outer peripheral surface of a flange portion of a synthetic resin plug body which fits and seals into an opening of a hollow container and is sealed. A plug-shaped hermetic lid with tamper-evident prevention, wherein a lid is formed, and a tear-off knob for opening is provided at a lower end portion of the envelope to be easily broken. 2. A sealing tube made of a laminate of an aluminum foil and a synthetic resin is tightly joined in a skirt shape to the outer peripheral surface of a flange portion of a plug body made of a synthetic resin which fits and seals into an opening of a hollow container. A lid is formed, and a tear-off knob for opening is provided at the lower end of the envelope, and a perforation or break line is spirally formed from the end of the knob to the sealing and contracting portion. And a tamper-evident plug-shaped hermetic lid formed so as to be easily breakable. 3. The plug body has an engagement protrusion and an engagement groove provided on a peripheral edge of a cup-shaped plug body, and an engagement groove and an engagement protrusion provided on a peripheral edge of a canopy portion. 3. A flange is formed by engaging and fitting with each other.
Plug-type closed lid with tamper-proof as described in (1). 4. The plug body according to claim 1, wherein the stopper body is formed by high-frequency welding a flange portion in which a canopy portion formed in a disk is fitted and joined to a stopper body formed in a cup shape. Plug-type closed lid with tamper-proof to be described. 5. The sealed cylinder is characterized in that the inner layer is formed of a synthetic resin layer that can be welded to the plug body and an inner layer portion is provided with an aluminum foil to form a sandwich-structured synthetic resin laminated cylindrical body. The plug-type hermetic lid with tamper-proof according to any one of claims 1 to 4. 6. The plug-type hermetic lid with tamper-proof according to claim 1, wherein the envelope is joined to the outer peripheral surface of a flange portion of the plug body by high frequency welding. 7. The plug-type closed lid with tamper-proof according to claim 1, wherein the sealing tube is fixed by caulking to an outer peripheral surface of a flange portion of the plug body.