JP2001031129A - Sealed packaging body of glass container, and sealing method and apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To firmly seal an opening of a glass container and to easily unseal the opening, without using a cap of the caulking type made of aluminum or alloy thereof. SOLUTION: A thermoplastic layer 3 is formed on the end surface of an opening of a glass container 1 storing therein liquid contents 2. A sheet-shaped inner cover 4 and a cap-shaped thermoplastic outer cover 5 are successively attached onto the end surface of the opening of the container 1. The cover 4 is formed from a main body made of an aluminum foil or an aluminum alloy foil, a heat-sealed layer on the underside of the main body, and an adhesive layer on the upper surface of the main body. And, for example, a heat sealing operation for the heat-sealed layer and the thermoplastic resin layer 3, and an adhesion operation for the adhesive layer and the cover 5 are simultaneously carried out in one step.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hermetically sealed package, a method and an apparatus for sealing a glass container, and more particularly to a hermetically sealed glass container capable of obtaining excellent sealing properties even for liquid contents over a long period of time. The present invention relates to a body, a sealing method and a device.

[0002]

2. Description of the Related Art Conventionally, liquor sold at, for example, a store at a station is housed in a bottomed cylindrical glass container, and the opening of the glass container is fixed by squeezing a cap made of aluminum or its alloy. Sealing method is adopted.

[0003]

In the conventional squeezing-type sealing device, when opening, the tongue for opening provided on the cap made of aluminum or its alloy is pulled and the squeezed portion of the cap is opened. A method is used in which cutting is performed in the direction of opening.However, a large force is required to cut the crimped portion, and the edge of the cut portion is shaped like a sharp blade. Etc. may be damaged. For this reason, some shops at stations
In some cases, the clerk performs the opening work and hands the glass container to the customer with the cap removed.
In the case of this method, the burden on the clerk becomes extremely large, and it has been considered to stop selling alcoholic beverages in a glass container using a squeezing type sealing device.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and it is possible to securely seal the opening of a glass container without crimping and fixing a cap made of aluminum or its alloy, and it is easy to open and easy to open. To provide a sealed package of a glass container, a sealing method, and a device, in which there is no possibility of damaging a finger or the like at all, and there is no possibility that a part of an inner lid remains at an open end of the opened glass container. Aim.

Another object of the present invention is to improve the hermeticity of a glass container.

It is another object of the present invention to simplify the work of mounting and fixing the inner lid and the outer lid to the glass container.

Another object of the present invention is to prevent the inner lid from falling off the outer lid even when the work of mounting and fixing the inner lid and the outer lid to the glass container is performed by an automatic machine. It is in.

Another object of the present invention is to make it possible to easily and reliably perform heat sealing between the inner lid and the glass container and to bond the two lids to each other, and to prevent the glass container from being damaged during the operation. It is to make.

Another object of the present invention is to make it possible to easily visually confirm the fact that once opened, even if the outer lid is again adhered to the opening end of the glass container after opening. It is to make.

Another object of the present invention is to make it possible to easily open the outer lid and the inner lid with a small force.

Another object of the present invention is to make it easier to open both lids after the inner lid has begun to peel off from the glass container.

Still another object of the present invention is to make it possible to reduce the external force required to be applied at the beginning of peeling when the inner lid is peeled from the glass container.

[0013]

In order to achieve the above object, the present invention provides a glass container having a glass container having a thermoplastic resin layer formed on an open end face, an inner lid base material, and a heat seal layer on the lower surface thereof. An inner lid arranged on the open end of the container, and an outer lid made of a thermoplastic resin arranged on the glass container from the upper surface side of the inner lid in a cap shape, wherein the inner lid is a glass container. It is characterized in that the lids are heat-sealed and the lids are connected to each other with an adhesive force exceeding the adhesive force by the heat seal. This makes it possible to securely seal the opening of the glass container without squeezing and fixing the cap made of aluminum or its alloy, and at the time of opening, the inner lid and the outer lid can be opened in a single opening operation. It can be opened.

The present invention also provides a glass container having a thermoplastic resin layer formed on the open end surface, an inner cover base material and a heat seal layer on the lower surface thereof, the inner cover being disposed on the open end of the glass container. And an outer lid made of a thermoplastic resin disposed on the glass container from the upper side of the inner lid in the form of a cap, and the inner lid is heat-sealed to the glass container, and the lids are heated. It is characterized in that they are bonded to each other with an adhesive force exceeding the adhesive force of the seal. This makes it possible to securely seal the opening of the glass container without crimping and fixing the cap made of aluminum or its alloy, and it is easy to open and there is no risk of damaging a finger or the like at the time of opening. In addition, since the glass container and the inner lid are heat-sealed, there is no problem that a part of the inner lid remains at the opening end of the glass container at the time of opening, unlike the case of bonding using glue or the like.

[0015] The present invention also provides a glass container having an open end face,
A silane coupling agent layer is formed prior to the thermoplastic resin layer, or the silane coupling agent is contained in the thermoplastic resin layer formed on the opening end surface of the glass container. . Thus, the sealing strength between the glass container and the inner lid is increased, and the sealing performance of the glass container can be further improved.

According to the present invention, the inner lid and the outer lid are arranged on the glass container so as to be separable from each other, so that the inner lid and the glass container are heat-sealed and the two lids are simultaneously bonded to each other. It is characterized by the following. And this gives
The heat sealing of the inner lid and the glass container and the mutual bonding of both lids can be performed in one operation, and the operation can be simplified.

According to the present invention, the outer lid is disposed on the glass container while the inner lid is temporarily fixed in the outer lid, so that the inner lid and the glass container are heat-sealed and the two lids are simultaneously bonded to each other. It is characterized by having done. Thus, even when the work of attaching and fixing the inner lid and the outer lid to the glass container is performed by an automatic machine, there is no problem that the inner lid is detached from the outer lid to cause poor sealing.

In the present invention, the inner lid is adhered to the outer lid, and the outer lid is mounted on the glass container, and the inner lid and the glass container are heat-sealed from the outer surface of the outer lid. It is characterized by the following. Then, since the two lids are bonded in a step different from the heat sealing, the required bonding strength can be easily obtained.

According to the present invention, at least a part of the inner lid base material is formed of an inductive material, and the inner lid and the glass container are heat-sealed and the two lids are bonded to each other by using induction heating. It is characterized by having done. Thus, heat sealing between the inner lid and the glass container and bonding of the two lids to each other can be easily and reliably performed, and there is no possibility that the glass container may be damaged during the operation.

The present invention is also characterized in that the inner lid and the outer lid are integrated during the in-mold molding of the outer lid. And this makes production easy,
It is possible to stabilize the adhesive force between the inner lid and the outer lid.

The present invention also provides a thermoplastic resin layer formed on the opening end face of the glass container; an inner lid which is heat-sealed to the glass container via a heat seal layer formed on the lower surface of the inner lid substrate; An outer lid made of a thermoplastic resin, which is disposed on the glass container from the upper surface side of the inner lid and is fixed to the glass container by bonding to the inner lid; and an adhesive force between the two lids, It is characterized in that it is set to a value exceeding the adhesive force by heat sealing. This makes it possible to securely seal the opening of the glass container without using a crimping type cap made of aluminum or its alloy, and it is easy to open and there is no possibility of damaging a finger or the like at the time of opening. . Further, unlike the case of bonding using glue or the like, there is no problem that a part of the inner lid remains at the opening end of the glass container at the time of opening.

The present invention also provides a silane coupling agent layer between the thermoplastic resin layer and the opening end face of the glass container, or a method of forming a thermoplastic resin layer containing a silane coupling agent on a glass container. Is formed on the end face of the opening. Thus, the sealing strength between the glass container and the inner lid is increased, and the sealing performance of the glass container can be further improved.

According to the present invention, the inner lid substrate is constituted by a main body formed of an inductive material and an adhesive layer laminated on the upper surface of the main body, wherein the adhesive layer is the same as or similar to the outer lid. It is characterized by being formed of a thermoplastic resin. As a result, heat sealing between the inner lid and the glass container and bonding of the two lids to each other can be performed easily and reliably using induction heating, and there is no possibility that the glass container will be damaged during operation. In addition, since the adhesive layer is formed of a thermoplastic resin of the same or similar material as the outer lid, the adhesive strength between the two lids is stabilized, and only the outer lid comes off when opening, and the inner lid is placed on the glass container. There is no defect such as being left at all.

According to the present invention, the outer lid includes a main body having a planar shape following the outer shape of the opening end of the glass container, and a short cylindrical hakama hanging down from a peripheral edge of the main body. In the department,
It is characterized in that a thin portion where a crack is generated by an external force applied to the hakama portion at the time of opening is provided. Then, if the opening operation is performed, a crack will be generated in the thin portion. Therefore, even if the outer lid is adhered to the opening end of the glass container again after the provisional opening, the fact that the opening has been once performed is recognized as the outside. Can be easily visually confirmed. Further, if a crack is formed in the thin portion, the cap-shaped outer lid can be formed in a flat plate shape at least in the unsealing portion, so that the unsealing becomes easy.

According to the present invention, the thin portion is provided at two places at intervals in the circumferential direction, and the thin fold portion is provided on a line connecting the thin portions of the main body with a straight line. It is characterized by. Thus, if the portion between the thin portions of the hakama portion is gripped and opened, the hakama portion functions as a gripping piece for opening, and the opening operation is facilitated. Also, at this time, the main body is bent at the fold portion, so that the opening operation becomes easier.

The present invention is further characterized in that two thin opening guides are provided at the center between the thin portions of the skirt. By this, the fold portion is brought closer to the center side of the main body portion, so that even if the circumferential interval between the two thin portions is increased, the space between the two opening guide portions functions as an opening gripping piece. And the opening operation can be made easier.

According to the present invention, a groove-shaped non-adhesive portion is provided on the inner peripheral edge between the thin portions of the main body, and the non-adhesive portion is provided at the center in the circumferential direction from the inner surface to the outer surface. And an opening projection projecting in a tapered shape is provided. And, by this, the portion corresponding to the non-adhesive portion in the shape of the groove becomes non-adhesive with the glass container,
In this non-adhered region, only the portion corresponding to the unsealing protrusion that protrudes toward the outer diameter side is bonded to the glass container. For this reason, when an opening operation is performed while gripping the portion between the thin portions of the hakama portion, the adhesive portion of the inner lid with the glass container starts to peel off from the front end side of the portion corresponding to the opening projection. Become. Then, when a part of the adhesive portion is peeled off, the inner lid can be peeled off from the glass container with a small force thereafter, so that it is possible to open with a small force.

According to the present invention, a portion sandwiched between the two opening guides of the skirt is formed by folding an inner base portion and a tongue bent to the outer surface side of the base portion via a connection portion at a lower edge. It is characterized in that it is constituted by one part. Thus, the opening can be easily performed by grasping the tongue piece and performing the opening operation.

The present invention is also characterized in that the upper end edge of the tongue piece is formed in a mountain shape having a vertex at the center in the circumferential direction. And by this, when grasping the tongue piece, the tip of the fingernail is hooked on the chevron,
The tongue piece can be easily tilted in a direction away from the base, and the tongue piece can be easily gripped.

According to the present invention, a notch is formed at the center in the circumferential direction of the connecting portion between the base and the tongue to form an opening when the tongue is tilted away from the base. It is characterized by the following. Thus, when performing the opening operation by gripping the tongue piece, a finger can be inserted into the opening, and the opening can be performed more easily.

The present invention is also characterized in that the tip of the tongue piece is bent along the upper surface of the main body to provide an opening at the tip. Thus, even when the upper and lower dimensions of the skirt portion are short, a long tongue piece portion is obtained, and the opening operation is extremely facilitated in combination with the provision of the opening at the tip. It becomes possible.

In the present invention, the portion sandwiched between the two opening guide portions of the skirt portion is formed into an inner base portion and a vertical envelope shape of a flat envelope located on the outer surface side of the base portion. It is characterized in that it is constituted by a finger hook portion, and only the circumferential central portion of the finger hook portion is connected to the base portion. Thus, when performing the opening operation, it is possible to insert the finger into the finger hook portion and perform the opening operation easily.

[0033] The present invention is also characterized in that the upper edge of the outer portion of the finger rest is formed as a downwardly curved surface. Thus, a step is formed between the inner portion and the outer portion at the upper edge of the finger hook portion, and it becomes easy to insert a finger into the finger hook portion.

According to the present invention, a portion sandwiched between the two opening guide portions of the skirt portion is located at a position outside the base portion, the base portion being connected to the main body only at the center in the circumferential direction of the upper end edge. And an outer portion forming a finger-hook portion having a flat envelope-like vertical tubular shape together with the base portion. This makes it possible to reduce the size of the portion provided with the finger hook portion that protrudes toward the outer diameter side, thereby preventing the finger hook portion from being caught by another during transportation.

According to the present invention, the outer lid comprises a main body having a planar shape following the outer shape of the opening end of the glass container, and a short cylindrical hakama hanging down from a peripheral edge of the main body. Department
It is connected to the main body through a connection part formed in a part in the circumferential direction and a discontinuous connection part formed in the remaining part, and the discontinuous connection part is cut by an external force applied to the skirt part at the time of opening. It is characterized by doing so. Thus, when the opening operation is performed, if the discontinuous connection portion is cut, the entire hakama portion becomes a large ring-shaped handle portion, and opening becomes extremely easy.

According to the present invention, the outer lid further comprises a main body in the shape of a donut plate having a flat shape following the outer shape of the opening end of the glass container, and a short cylindrical hakama hanging down from the periphery of the main body. The main body portion is provided with an opening piece extending toward the center from the inner peripheral edge thereof and having an opening at a tip, and a thin portion or notch extending from the inner peripheral edge toward the hakama portion is provided at both sides of the opening piece. It is characterized in that it is provided. And, by this, it becomes possible to obtain a long opening piece without providing a protruding portion protruding to the outer diameter side in the hakama portion,
Also, the opening operation is easy.

[0037]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings. FIG. 1 shows a sealing device for a glass container according to a first embodiment of the present invention. In the drawing, reference numeral 1 denotes a glass container having a bottomed cylindrical shape.
For example, a liquid content 2 such as sake is accommodated, and a thermoplastic resin layer 3 is formed on the open end surface of the glass container 1. The open end face of the glass container 1 is sealed by the inner lid 4 and the outer lid 5.

A metal oxide film such as a tin compound, a titanium compound or a zirconium compound may be formed on the surface of the glass container 1, particularly on the open end face, in a thickness of about 100 to 2000 °, but it is not necessarily required. It is not necessary. The metal oxide film is formed by spraying a vapor of the metal oxide at about 300 to 600 ° C. Then, the opening end face of the glass container 1 with or without the metal oxide film is provided with:
As shown in FIG. 2, the thermoplastic resin layer 3 is formed via a silane-based coupling agent layer 6 for improving adhesiveness, or a thermoplastic resin layer containing a silane-based coupling agent is formed. It is supposed to be.

The thermoplastic resin layer 3 is made of polyvinyl butyral, ionomer, ethylene-vinyl acetate copolymer (EVA), saponified EVA, carboxylated EVA, saponified carboxylated EVA, ethylene-acrylic acid copolymer (EAA), It is formed of a thermoplastic resin such as ethylene-ethyl acrylate copolymer (EEA), polyacrylate, polyamide, polyester, or vinyl chloride-vinyl acetate copolymer. 2 to 400μ in consideration of variation etc.
m, preferably about 3 to 10 μm. Then, the thermoplastic resin layer 3 is baked at a temperature suitable for each thermoplastic resin, for example, about 80 to 250 ° C. for about 5 seconds to 10 minutes, preferably about 100 to 200 ° C. for about 10 seconds to 5 minutes. It is formed by this.

The silane coupling agent layer 6
Is γ-chloropropyltrimethoxysilane, vinyltrichlorosilane, vinyltriethoxysilane, vinyl-
Tris-β-methoxyethoxysilane, γ-methacryloxypropyltrimethoxysilane, β-3,4-epoxycyclohexylethyltrimethoxysilane, γ-glycidoxypropyltrimethoxysilane, vinyltriacetoxysilane, γ-mercaptopropyltri Methoxysilane, γ-aminopropyltriethoxysilane, N-β
-Aminoethoxy-γ-aminopropyltrimethoxysilane or the like, and is formed with a layer thickness of about 0.1 to 1.0 μm. The silane-based coupling agent layer 6 is formed by applying a solution of about 5 to 10% of the silane-based coupling agent and, if necessary, performing a drying treatment at about 100 to 200 ° C. for about 5 to 60 seconds. It has become. In the present invention, in addition to the method of forming a silane-based coupling agent layer on the opening end surface of the glass container 1 before the thermoplastic resin layer as described above, a silane-based coupling agent is There is also a method of forming a thermoplastic resin layer containing the same. In this case, the same as described above can be used for the thermoplastic resin and the silane coupling agent, and the silane coupling agent is contained in the thermoplastic resin in an amount of about 0.1 to 20% by weight (both are solid contents). Added. Incidentally, the film thickness in this case is also the same as in the case of the thermoplastic resin alone 2 to 400.
μm, preferably 3 to 10 μm.

On the other hand, as shown in FIG.
A main body 7a made of a metal foil such as aluminum or an alloy thereof and an adhesive layer 7 laminated on the upper surface side of the main body 7a
b, and an inner lid substrate 7 comprising
Is formed with a heat seal layer 8 on the lower surface side. The inner lid 4 is heat-sealed to the thermoplastic resin layer 3 of the glass container 1 via the heat seal layer 8 and is bonded to the outer lid 5 described later in detail via the adhesive layer 7b. Has become. When aluminum or its alloy foil is used as the main body 7a, a foil having a thickness of 20 to 100 μm is usually used.

The heat seal layer 8 is formed of a thermoplastic resin such as polyvinyl butyral or polyamide, for example.
By heating at 0 to 180 ° C. for 1 to 3 seconds under a pressure of about 3 kg / cm ² , the thermoplastic resin layer 3 is heat-sealed.

The adhesive layer 7b is formed of the same or different thermoplastic resin as that of the outer lid 5 described in detail later. For example, low-density polyethylene (LDPE), linear low-density polyethylene (LLDPE), Density polyethylene (HDPE), ethylene vinyl acetate copolymer (EV
Resins such as A), polypropylene (PP), polyester or a blend of these with other resins can be used. The adhesive layer 7b is bonded to the outer lid 5 by heating under the same conditions as the heat seal layer 8. The adhesive strength at that time exceeds the adhesive strength of the heat seal layer 8 and the thermoplastic resin layer 3 due to the heat sealing, so that the lids 4 and 5 can be opened at the time of opening. The glass container 1 can be peeled and removed integrally.

As shown in FIGS. 1, 4 to 6, the outer lid 5 has a disk-shaped main body 5a having a planar shape following the outer shape of the open end of the glass container 1, and a main body 5a. A short cylindrical hakama portion 5b hanging from the peripheral edge portion is formed into a cap shape having a short cylindrical shape as a whole.
Are low density polyethylene (LDPE), linear low density polyethylene (LLDPE), high density polyethylene (HDP)
E), polypropylene (PP) or a resin such as a blend of these with other resins.

As shown in FIG. 4 to FIG. 6, two thin portions having an opening angle of about 120 degrees in the circumferential direction and forming a vertical groove are formed on the inner peripheral surface of the skirt portion 5b. 9 are formed, and each of the thin portions 9 is designed to be cracked by an external force applied to the skirt portion 5b at the time of opening, as will be described in detail later. The crack makes it possible to easily visually confirm the fact of opening from the outside.

As shown in FIG. 4 to FIG. 6, on the lower surface of the main body 5a, a groove-shaped thin fold portion 10 is formed on a line connecting the thin portions 9 with a straight line. The main body 5a can be easily folded in two from the fold 10 by applying an external force to the skirt 5b at the time of opening. This will be described later in detail.

As shown in FIGS. 4 to 6, on the inner peripheral surface of the skirt portion 5b, a central position between the thin portions 9 is provided.
Two opening guide portions 11 each having an opening angle of about 40 degrees in the circumferential direction and forming a vertical groove shape are formed, and a portion E sandwiched between both opening guide portions 11 of the hakama portion 5b.
By performing the opening operation while gripping the opening portion, a crack is generated in both the opening guide portions 11, and the portion E sandwiched between the opening guide portions 11 becomes flat with respect to the main body portion 5a. It can be made to function as a holding piece.

As shown in FIGS. 5 and 6, on the lower surface of the main body 5a, a peripheral edge connecting the thin portions 9 is provided.
An arcuate groove-shaped non-adhesive portion 12 is formed, and at the circumferential center of the non-adhesive portion 12, an unsealing protrusion 13 protrudes radially in a triangular shape from the inner surface to the outer surface. Is formed. Then, by holding the portion E sandwiched between the opening guide portions 11 of the hakama portion 5b and performing the opening operation, the bonding portion between the inner lid 4 and the glass container 1 is attached to the tip of the opening protrusion 13. Peeling is started from the corresponding portion, whereby the inner lid 4 and the glass container 1 can be peeled with a small force. This will be described later in detail.

On the other hand, at the periphery of the upper surface of the main body 5a,
As shown in FIGS. 4 and 5, a ring-shaped stopper projection 14 is formed.
When the glass containers 1 are stacked on the upper surface side of the outer lid 5, the lower end portion of the glass container 1 is supported from the outer peripheral side, so that the positional displacement of the glass container 1 on the upper surface side can be prevented.

Next, the operation of the present embodiment will be described. When sealing the glass container 1, first, at the opening end face,
Prepare a glass container 1 in which a silane-based coupling agent layer 6 and a thermoplastic resin layer 3 are sequentially formed in advance, or prepare a glass container 1 in which a thermoplastic resin layer containing a coupling agent is formed on an open end surface. prepare. Then, a liquid content 2 such as sake is stored in the glass container 1.

Next, the inner lid 4 is inserted into the outer lid 5 and the outer lid 5 is attached to the open end of the glass container 1. At this time, it is preferable that the outer diameter of the inner cover 4 is set to a value slightly larger than the inner diameter of the skirt portion 5b of the outer cover 5 so that the inner cover 4 does not fall out of the outer cover 5.

In this manner, the outer lid 5 in which the inner lid 4 is inserted
Is attached to the opening end of the glass container 1, while the outer lid 5 is pressed from the upper surface side at a pressure of about 3 kg / cm ² ,
The inner lid 4 is heated by a high frequency induction heating method. Then
The temperature of the main body 7a of the inner lid base material 7 instantaneously rises, and by this temperature rise, the heat seal layer 8 is heat-sealed to the thermoplastic resin layer 3 and the adhesive layer 7b is adhered to the outer lid 5.
That is, by one bonding operation, the inner lid 4 and the glass container 1 are bonded simultaneously, and the inner lid 4 and the outer lid 5 are simultaneously bonded, and the open end of the glass container 1 is sealed by the two lids 4 and 5. Is done.

Incidentally, the heat seal layer 8 of the inner lid 4 is
Although the thermoplastic resin layer 3 is heat-sealed to the thermoplastic resin layer 3 of the glass container 1, since the thermoplastic resin layer 3 is formed on the opening end surface of the glass container 1, as shown by reference numeral H in FIG. Only the periphery of the seal layer 8 is heat-sealed in a ring shape. Moreover, the non-adhesive portion 1 of the outer lid 5
In the portion A corresponding to 2, except for the portion B corresponding to the opening projection 13, even when pressure is applied from the upper surface side of the outer lid 5, the heat seal layer 8 is not pressed against the thermoplastic resin layer 3. Therefore, the heat seal layer 8 is not heat-sealed to the thermoplastic resin layer 3. The adhesive layer 7b of the inner cover 4 is also bonded to the outer cover 5 only at the portion corresponding to the symbol H of the heat seal layer 8.

When the lids 4 and 5 are opened in the above-mentioned sealed state, a finger is first placed on a portion E of the skirt portion 5b of the outer lid 5 which is sandwiched between the opening guide portions 11, and this portion E is held at the upper end thereof. Lift upward with the part as a fulcrum. Then, a crack occurs in both the opening guide portions 11 and both opening guide portions 1 of the skirt portion 5b.
As shown in FIG. 8, the portion E sandwiched by
Becomes flat. For this reason, this part E can function as an opening gripping piece.

When this portion E is gripped and the outer lid 5 is lifted obliquely upward, the opening protrusion 13 is located at the center thereof, and the lifting force is applied to the opening protrusion of the heat seal layer 8. 13 is applied to the tip of the portion B (see FIG. 7), and the peeling is started from the tip of the portion B.

Incidentally, the heat seal portion H shown in FIG.
When peeling is attempted from a portion other than the portion B corresponding to the opening projection 13 in a state where no peeling has occurred, the force is dispersed over a wide range of the heat seal portion H, and at the time of starting peeling. It will take a lot of power.

However, when the separation is to be performed from the portion B corresponding to the opening projection 13, the force is concentrated on the tip portion, and the force required at the start of the separation can be reduced. Then, when a part of the heat-sealed portion H is peeled off, the lids 4 and 5 can be peeled off from the thermoplastic resin layer 3 by a relatively small force.

When the lids 4 and 5 are peeled off from the thermoplastic resin layer 3 in this manner, cracks occur in the thin portions 9 of the skirt portion 5b of the outer lid 5, and as shown in FIG. Lid 5 is folded part 1
It is folded in two from the 0 position, and the peeling up to this position is completed. When a part of the main body 5a is peeled off, the remaining main body 5a can be held even if the part E sandwiched between the opening guides 11 is gripped or the peeled main body 5a is gripped. Can be easily peeled off.

Here, since the inner lid 4 has its heat seal layer 8 heat-sealed to the thermoplastic resin layer 3 and the adhesive layer 7b adhered to the outer lid 5, It is conceivable that at the time of opening, the peeling does not occur at the heat sealing portion between the heat seal layer 8 and the thermoplastic resin layer 3 but at the bonding portion between the adhesive layer 7b and the outer lid 5; As described above, since the adhesive strength between the adhesive layer 7b and the outer lid 5 is set to a value exceeding the adhesive strength by heat sealing between the heat seal layer 8 and the thermoplastic resin layer 3, the heat seal layer 8 And the thermoplastic resin layer 3 are always peeled off, and there is no problem that only the inner lid 4 remains on the glass container 1 at the time of opening.

Thus, the opening of the glass container 1 can be securely sealed without using a crimping type cap made of aluminum or its alloy, and there is no risk of damaging a finger or the like at the time of opening. In addition, the inner lid 4 and the glass container 1
Since the bonding with the heat sealing layer 8 and the thermoplastic resin layer 3 is heat sealing, unlike the case of bonding using glue or the like, a part of the inner lid 4 is attached to the opening end of the glass container 1 at the time of opening. There is no problem that it remains. Further, since the inner lid 4 and the outer lid 5 are sealed by the two lids, the safety is high, and the sealing operation is easy because the sealing operation is fixed to the glass container 1 by one sealing operation.

FIG. 10 shows a second embodiment of the present invention, in which the inner lid 4 is temporarily fixed in the outer lid 5 before the glass container 1 is sealed.

That is, as shown in FIG. 10, the inner lid 4 is inserted and arranged in the outer lid 5 and is temporarily fixed to the outer lid 5 by, for example, three spot weldings 20.
In this state, it is mounted on the glass container 1 (see FIG. 1), and the open end thereof is sealed. In other respects, the configuration is the same as that of the first embodiment, and the operation is the same.

However, since the inner lid 4 is temporarily fixed in the outer lid 5 in advance, when the opening of the glass container 1 is sealed using an automatic machine, when the outer lid 5 receives an impact. However, there is no problem that the inner lid 4 falls off the outer lid 5.

FIG. 11 shows a third embodiment of the present invention. Prior to heat sealing between the inner lid 4 and the glass container 1, the inner lid 4 and the outer lid 5 are completely bonded in advance. It is something to keep.

That is, as shown in FIG. 11, the inner lid 4 is inserted and arranged in the outer lid 5 and almost the entire surface is bonded to the outer lid 5 in advance. The outer lid 5 is then mounted on the glass container 1 so that the inner lid 4 and the glass container 1 are heat-sealed. In other respects, the configuration is the same as that of the first embodiment, and the operation is the same.

However, since the inner lid 4 and the outer lid 5 are bonded in advance, there are cases where the bonding conditions between the inner lid 4 and the outer lid 5 are different from the heat sealing conditions between the inner lid 4 and the glass container 1. However, it can be dealt with sufficiently.

FIG. 12 shows a fourth embodiment of the present invention, which can be opened under almost the same conditions regardless of the position of the outer lid 5 from any position on the peripheral surface.

That is, on the inner peripheral surface of the skirt portion 5b of the outer lid 5,
As shown in FIG. 12, for example, six thin portions 9 are formed at equal intervals in the circumferential direction, and a non-adhesion portion 12 in the form of a ring groove is formed at the peripheral edge of the lower surface of the main body 5a of the outer lid 5. Have been. At the center position between the two thin portions 9 adjacent to the non-adhesion portion 12, six opening protrusions 13 projecting radially from the inner surface to the outer surface in a triangular shape are provided. Is provided. In other respects, the configuration is the same as that of the first embodiment, and the operation is the same.

In the present embodiment, however, since the thin portions 9 are provided evenly in the circumferential direction of the outer lid 5, the same conditions can be obtained regardless of the position on the outer peripheral surface of the outer lid 5 from which the seal is opened. Can be opened with.

FIGS. 13 to 17 show a fifth embodiment of the present invention, in which the structure of a portion E sandwiched between both opening guide portions 11 in the first embodiment is changed. And it can be more easily opened.

That is, both opening guide portions 11 of the hakama portion 5b
As shown in FIGS. 13 to 17, a portion E sandwiched between the base portion 21 and the tongue piece portion 22 is formed on the inside, and the base portion 21 forms a part of the skirt portion 5b. And the tongue piece 22 is disposed on the outer side thereof so as to protrude from the skirt portion 5b to the outer diameter side, and the connecting portion 23 at the lower end edge thereof is provided.
Through the base 21. The tongue piece 22 functions as a gripping piece at the time of unsealing by tilting the connecting part 23 in a direction away from the base 21 with the fulcrum as a fulcrum, thereby facilitating the unsealing operation. I have.

As shown in FIG. 16, the upper end edge of the tongue piece portion 22 has a mountain shape having a vertex at the center in the circumferential direction, and the tip of a fingernail is hooked on this mountain shape portion. The tongue piece 22 can be easily turned down. In other respects, the configuration is the same as that of the first embodiment, and the operation is the same.

Since the tongue piece 22 is provided at the portion E sandwiched between the unsealing guides 11, it is easy to grip the hakama portion 5b of the outer lid 5 when performing the unsealing operation. Opening operation is easy.

FIGS. 18 to 22 show a sixth embodiment of the present invention. In the connection part 23 of the base part 21 and the tongue piece part 22 in the fifth embodiment, the center in the circumferential direction is shown. A notch 30 cut in, for example, a semicircular shape is provided in the upper portion, and the notch 30 forms, for example, a circular opening 31 when the tongue piece 22 is tilted away from the base 21. It is made to be done. In other respects, the configuration is the same as that of the first embodiment, and the operation is the same.

Thus, the base portion 21 is formed by the notch 30.
An opening 31 is formed in the center of the connecting portion 23 between the tongue 22 and the tongue piece 22. By inserting a finger into this opening 31, the opening operation can be performed extremely easily, and the force of the finger is reduced. Even weak people can easily open.

FIGS. 23 to 27 show a seventh embodiment of the present invention, in which a finger hook 40 is used in place of the tongue piece 22 in the fifth embodiment. .

That is, as shown in FIG. 23 to FIG. 27, the finger hook portion 40 is formed in the shape of a flat envelope in the vertical direction and is arranged on the outer surface side of the base portion 21. The base 21 is connected only at the center in the circumferential direction. Thus, when a finger is inserted into the finger hook 40 and opened, as shown in FIG. 27, the finger hook 40 can be easily opened in a ring shape.

The finger hook 40 is shown in FIGS.
As shown in FIG. 5, the upper end edge of the outer portion is a curved surface that is convex downward, so that a finger can be easily inserted into the finger hook 40. In other respects, the configuration is the same as that of the fifth embodiment, and the operation is the same.

Thus, since the opening operation can be performed by putting a finger into the finger hook portion 40, the opening can be easily performed.

FIGS. 28 to 32 show an eighth embodiment of the present invention. Instead of the base 21 and the tongue 22 in the fifth embodiment, a base 51 and an outer part 52 are shown. Is used.

That is, as shown in FIG. 28 to FIG. 32, only the central portion of the upper edge of the hakama portion 5b sandwiched between the two opening guide portions 11 is thickened by the thick portion 51a. A base portion 51 connected to the base portion 5a; and an outer portion 52 that is located outside the base portion 51 and forms a finger-hook portion 50 that forms a flat envelope-like vertical tubular shape together with the base portion 51. The two opening guide portions 11 are cut from the base portion 51 when a finger is inserted into the finger hook portion 50 as shown in FIG.

The upper edge of the outer portion 52 is
As shown in FIG. 31 and FIG. 31, a downwardly convex curved surface is provided, so that a finger can be easily inserted into the finger hook portion 50. In other respects, the configuration is the same as that of the fifth embodiment, and the operation is the same.

Since the finger hook 50 is partially constituted by the base 51, the amount of protrusion of the finger hook 50 toward the outer diameter side can be reduced.
Is continuous with the skirt portion 5b via the two unsealing guide portions 11, so that the finger hook portion 50 is not likely to be hooked on another member.

FIGS. 33 and 34 show a ninth embodiment of the present invention, in which a tongue piece 62 is used instead of the tongue piece 22 in the fifth embodiment. is there.

That is, as shown in FIG. 33 and FIG. 34, the tongue piece 62 rises along the outer surface of the base 21 and its tip is bent at a right angle to extend along the upper surface of the main body 5a. An opening 63 for inserting a finger at the time of opening is provided at a distal end portion which extends and extends along the upper surface of the main body portion 5a. In other respects, the configuration is the same as that of the fifth embodiment, and the operation is the same.

However, the use of the tongue piece 62 results in a long-sized tongue piece, so that the opening operation becomes extremely easy.

FIGS. 35 and 36 show a tenth embodiment of the present invention, in which an outer lid 75 is used in place of the outer lid 5 in the first embodiment.

That is, as shown in FIGS. 35 and 36, the outer lid 75 is provided with a main body portion 75a having a flat donut disk shape following the outer diameter of the opening end of the glass container 1 (see FIG. 1). And a short cylindrical hakama portion 75b hanging down from the peripheral portion of the main body portion 75a.
An opening piece 76 extending toward the center is provided integrally with the inner peripheral edge of a, and an opening 77 for inserting a finger at the time of opening is provided at the tip end.

As shown in FIG. 36, the main body 75a is located at both sides of the opening 75 of the main body 75a.
A groove-shaped thin portion 78 extending from the inner peripheral edge of a to the hakama portion 75b is provided, and both of the thin portions 78 lift the opening piece 76 upward as shown by a chain line in FIG. This causes cracks to occur. In other respects, the configuration is the same as that of the first embodiment, and the operation is the same.

By using the outer lid 75, a long-sized unsealing piece 76 can be formed without causing a part of the skirt portion 75b to protrude toward the outer diameter side.

In the tenth embodiment, both sides of the main body 75a are opened through the unsealing pieces 76.
Although the case where the thin portions 78 are provided has been described,
A slit may be used in place of the thin portion 78.

FIGS. 37 to 41 show an eleventh embodiment of the present invention, in which an outer lid 85 is used in place of the outer lid 5 in the first embodiment.

That is, as shown in FIGS. 37 to 41, the outer lid 85 has a main body 85a in the form of a flat cap following the outer shape of the opening end of the glass container 1, and a lower peripheral edge of the main body 85a. Short sleeve-shaped hakama part 85 hanging down from the part
The outer lid 85 and the inner lid 4 are integrated when the outer lid 85 is formed by in-mold molding.

As shown in FIGS. 37 to 41, the hakama portion 85b is set to have an outer diameter slightly larger than the outer diameter of the main body portion 85a. A handle portion 86 protruding to the side is provided. And
The skirt portion 85b and the main body portion 85a are connected to each other via a connecting portion 87 formed at a part in the circumferential direction and a discontinuous connecting portion 88 formed at the remaining portion.

That is, as shown in FIGS. 37 to 39, the connecting portion 87 is provided at a position radially opposed to the handle portion 86 at an angle of, for example, about 30 to 60 degrees. The discontinuous connection portion 88 is, for example, 5 to 4
It is constituted by providing a plurality of partial connecting pieces 88a at intervals of about 5 degrees.

As shown in FIG. 40, each of these partial connecting pieces 88a has a small connecting area with the skirt portion 85b.
The side shape is formed in the shape of a trapezoidal thin rod, whereby each partial connecting piece 88a can be easily cut with a small force when a hand is applied to the handle portion 86 at the time of opening and an external force is applied to the hakama portion 85b. It has become. As a result, as shown by a chain line in FIG. 41, the hakama portion 85b can be caused to be vertically raised while being connected to the main body portion 85a via only the connecting portion 87. 8
By putting a hand in 5b and pulling it, it can be easily opened. In other respects, the configuration is the same as that of the first embodiment, and the operation is the same.

By using the outer lid 85, a large ring-shaped handle can be obtained, and the opening operation can be easily performed. The outer lid 85 and the inner lid 4 are
Since the outer lid 85 is integrated at the time of in-mold molding, the integral strength can be stabilized and the sealing operation can be easily performed.

In each of the above embodiments, the case has been described where the main body 7a of the inner lid base material 7 is formed of a metal foil such as aluminum or an alloy thereof. No need.

In each of the above embodiments, the lids 4 and 5 and the lids 4 and 75 are bonded by a high-frequency induction heating method, or the lids 4 and 4 are formed by in-mold molding.
Although the case of integrally connecting the 85 has been described, the bonding may be performed using an ultrasonic tool horn. In this case, when a vertical vibration tool horn is used, the glass container 1 may be damaged. Therefore, it is preferable to use a horizontal vibration tool horn or a torsional vibration tool horn.

[0100]

As described above, the present invention comprises a glass container having a thermoplastic resin layer formed on the opening end surface, an inner lid base material, and a heat seal layer on the lower surface thereof. Provided with an inner lid, and an outer lid made of a thermoplastic resin disposed on the glass container from the upper surface side of the inner lid in a cap shape, the inner lid is heat-sealed to the glass container, and Since the lids are connected to each other with an adhesive force exceeding the adhesive force of the heat seal, the opening of the glass container is securely sealed without crimping and fixing the cap made of aluminum or its alloy. Also, at the time of opening, the inner lid can be opened together with the outer lid by a single opening operation.

The present invention also provides a glass container having a thermoplastic resin layer formed on the opening end face, an inner lid base material, and a heat seal layer on the lower surface thereof, the inner lid being disposed on the opening end of the glass container. And an outer lid made of a thermoplastic resin disposed on the glass container from the upper side of the inner lid in the form of a cap, and the inner lid is heat-sealed to the glass container, and the lids are heated. Since they are bonded to each other with an adhesive force exceeding the adhesive force of the seal, the opening of the glass container can be reliably sealed without crimping and fixing a cap made of aluminum or its alloy. In addition, opening is easy and there is no danger of damaging a finger or the like at the time of opening.
Also, since the glass container and the inner lid are heat sealed,
Unlike the case of bonding using glue or the like, there is no problem that a part of the inner lid remains at the opening end of the glass container at the time of opening.

[0102] The present invention also relates to a method for manufacturing a glass container, comprising the steps of:
The silane-based coupling agent layer is formed prior to the thermoplastic resin layer, or the silane-based coupling agent is contained in the thermoplastic resin layer formed on the opening end surface of the glass container. The sealing strength between the glass container and the inner lid is increased, and the sealing performance of the glass container can be further improved.

The present invention also provides an inner lid and an outer lid which are arranged on a glass container so as to be separable from each other, so that the inner lid and the glass container are heat-sealed and the two lids are simultaneously bonded to each other. Therefore, heat sealing between the inner lid and the glass container and bonding of the two lids to each other can be performed in a single operation, and the operation can be simplified.

The present invention also provides an outer lid placed on a glass container while the inner lid is temporarily fixed in the outer lid, so that the inner lid and the glass container are heat-sealed and the two lids are simultaneously bonded to each other. Therefore, even when the work of attaching and fixing the inner lid and the outer lid to the glass container is performed by an automatic machine, there is no problem that the inner lid falls off the outer lid and sealing failure occurs.

According to the present invention, the inner lid is bonded to the outer lid, the outer lid is mounted on the glass container, and the inner lid and the glass container are heat-sealed from the outer surface of the outer lid. Therefore, the two lids are bonded in a step different from the heat sealing, and the required bonding strength can be easily obtained.

The present invention also provides that at least a part of the inner lid base material is formed of an inductive material, and the inner lid and the glass container are heat-sealed and the two lids are bonded to each other by using induction heating. As a result, heat sealing between the inner lid and the glass container and bonding of the two lids to each other can be easily and reliably performed, and there is no possibility that the glass container is damaged during the operation.

According to the present invention, the inner lid and the outer lid are integrated during the in-mold molding of the outer lid, so that the production is easy and the adhesive strength between the inner lid and the outer lid is stabilized. Can be done.

The present invention also provides a thermoplastic resin layer formed on the opening end surface of the glass container; an inner lid heat-sealed to the glass container via a heat seal layer formed on the lower surface of the inner lid base; An outer lid made of a thermoplastic resin, which is disposed on the glass container from the upper surface side of the inner lid and is fixed to the glass container by bonding to the inner lid; and an adhesive force between the two lids, Since the value is set to a value exceeding the adhesive strength by heat sealing, the opening of the glass container can be securely sealed without using a cap made of aluminum or an alloy thereof and of a squeezing method, and the opening can be carried out. It is easy and there is no risk of damaging a finger or the like when opening. Further, unlike the case of bonding using glue or the like, there is no problem that a part of the inner lid remains at the opening end of the glass container at the time of opening.

The present invention also provides a silane coupling agent layer between the thermoplastic resin layer and the opening end face of the glass container, or a method in which a thermoplastic resin layer containing a silane coupling agent is used. Because it is made of resin, the sealing strength between the glass container and the inner lid is further increased,
It is possible to further improve the sealing property of the glass container.

In the present invention, the inner lid base material is composed of a main body formed of an inductive material and an adhesive layer laminated on the upper surface of the main body, and the adhesive layer can be thermally bonded to the outer lid. Since it is made of a suitable thermoplastic resin, heat sealing between the inner lid and the glass container and bonding of the two lids to each other can be performed easily and reliably by utilizing induction heating, and the glass container can be used during operation. There is no risk of damage.
In addition, since the adhesive layer is formed of a thermoplastic resin that can be thermally bonded to the outer lid, the adhesive strength between the two lids is stabilized, and only the outer lid is detached when opening, and the inner lid is placed on the glass container. There is no defect such as remaining.

According to the present invention, the outer lid includes a main body having a planar shape following the outer shape of the opening end of the glass container, and a short cylindrical hakama hanging down from the periphery of the main body. In the department,
Since a thin portion where a crack is generated by external force applied to the hakama portion at the time of opening is provided, if the opening operation is performed, a crack will occur in the thin portion, and after the provisional opening, the outer lid is again closed with the glass container. Even if it is adhered to the opening end of the, the fact that it has been opened once can be easily visually confirmed from the outside. Further, if a crack is formed in the thin portion, the cap-shaped outer lid can be formed in a flat plate shape at least in the unsealing portion, so that the unsealing becomes easy.

According to the present invention, the thin portions are provided at two places at intervals in the circumferential direction, and the thin fold portions are provided on a line connecting the thin portions of the main body with straight lines. If the portion between the thin portions of the hakama portion is gripped and opened, the hakama portion functions as an opening gripping piece, and the opening operation is facilitated. Also, at this time, the main body is bent at the fold portion, so that the opening operation becomes easier.

In the present invention, two thin opening guides are provided at the center between the thin portions of the hakama portion, so that the fold portion is moved toward the center of the main body. Even when the circumferential distance between the two thin portions is increased, the space between the two unsealing guides can be made to function as a gripping piece for unsealing, thereby making the unsealing operation easier.

According to the present invention, a groove-shaped non-adhesive portion is provided on the inner peripheral edge between the thin portions of the main body, and the non-adhesive portion is provided at the center in the circumferential direction from the inner surface to the outer surface. In this case, the inner lid has a portion corresponding to the groove-shaped non-adhesive portion, which is not adhered to the glass container. Only the portion corresponding to the unsealing projection projecting in a tapered shape toward the radial side is bonded to the glass container. For this reason, when an opening operation is performed while gripping the portion between the thin portions of the hakama portion, the adhesive portion of the inner lid with the glass container starts to peel off from the front end side of the portion corresponding to the opening projection. Become. Then, if a part of the adhesive portion is peeled off, the inner lid can be peeled off from the glass container with a small force thereafter, and as a result, it can be opened with a small force.

According to the present invention, the portion between the two opening guide portions of the skirt portion is provided with an inner base portion and a tongue bent on the outer surface side of the base portion via a connecting portion at the lower edge. Since it is constituted by one piece, it can be easily opened by grasping the tongue piece and performing the opening operation.

In the present invention, since the upper end edge of the tongue piece is formed in a mountain shape having the vertex at the center in the circumferential direction, the tip of the fingernail is gripped when the tongue piece is gripped. If the tongue is hooked on the chevron, the tongue can be easily tilted away from the base, and the tongue can be easily gripped.

According to the present invention, a notch is formed at the center in the circumferential direction of the connecting portion between the base and the tongue to form an opening when the tongue is tilted away from the base. Therefore, when performing the opening operation while holding the tongue piece, a finger can be inserted into the opening, and the opening can be performed more easily.

In the present invention, since the tip of the tongue piece is bent along the upper surface of the main body and an opening is provided at the tip, even when the vertical dimension of the hakama portion is short. ,
A long tongue piece can be obtained, and the opening operation can be made extremely easy in combination with the fact that the opening is provided at the tip.

According to the present invention, the portion between the two opening guides of the hakama portion is formed into an inner base portion and a vertical envelope of a flat envelope shape located on the outer surface side of the base portion. It is configured with a finger hook, and only the center in the circumferential direction of the finger hook is connected to the base, so when performing the opening operation,
It can be performed by inserting a finger into the finger hook, and can be opened with a large force.

According to the present invention, the upper edge of the outer portion of the finger hook is formed to have a downwardly curved surface, so that a step is formed between the inner portion and the outer portion at the upper edge of the finger hook. It is formed, and it becomes easy to insert a finger into the finger hook.

According to the present invention, a portion sandwiched between the two opening guide portions of the skirt portion is provided at a position outside the base portion between the base portion where only the circumferential center of the upper end edge is connected to the main body portion. And the outer portion forming a finger-hook portion in the form of a flat envelope in the vertical direction together with the base portion, so that the dimension of the portion where the finger-hook portion is provided on the outer diameter side is reduced. It is possible to prevent other things from being hooked on the finger hook portion during transportation.

According to the present invention, the outer lid includes a main body having a planar shape following the outer shape of the opening end of the glass container, and a short cylindrical hakama hanging down from the periphery of the main body. Department
It is connected to the main body through a connection part formed in a part in the circumferential direction and a discontinuous connection part formed in the remaining part, and the discontinuous connection part is cut by an external force applied to the skirt part at the time of opening. Therefore, when the opening operation is performed, if the discontinuous connection portion is cut, the entire skirt portion becomes a large ring-shaped handle portion, and the opening is extremely easy.

Further, in the present invention, the outer lid is constituted by a main body in the form of a donut plate having a flat shape following the outer shape of the opening end of the glass container, and a short cylindrical hakama hanging down from the peripheral edge of the main body. The main body portion is provided with an opening piece extending toward the center from the inner peripheral edge thereof and having an opening at a tip, and a thin portion or notch extending from the inner peripheral edge toward the hakama portion is provided at both sides of the opening piece. Since it is provided, a long opening piece can be obtained without providing a protruding portion projecting to the outer diameter side in the skirt portion, and the opening operation is easy.

[Brief description of the drawings]

FIG. 1 is a sectional view showing a sealing device for a glass container according to a first embodiment of the present invention.

FIG. 2 is a detailed sectional view showing a state of an open end of the glass container.

FIG. 3 is a cross-sectional view illustrating a configuration of an inner lid.

FIG. 4 is a perspective view showing an external configuration of an outer lid.

FIG. 5 is a sectional view of FIG. 4;

FIG. 6 is a configuration diagram of the outer lid of FIG. 4 as viewed from a lower surface side.

FIG. 7 is an explanatory diagram showing a state of a heat sealing portion of the inner lid with a glass container.

FIG. 8 is an explanatory diagram showing an initial state of opening the outer lid.

FIG. 9 is an explanatory diagram showing a state in which the outer lid is opened to the fold portion position.

FIG. 10 is an explanatory diagram showing a second embodiment of the present invention.

FIG. 11 is an explanatory diagram showing a third embodiment of the present invention.

FIG. 12 is an explanatory diagram showing a fourth embodiment of the present invention.

FIG. 13 is a sectional view of an outer lid showing a fifth embodiment of the present invention.

FIG. 14 is a bottom view of FIG.

FIG. 15 is a plan view of FIG.

FIG. 16 is a left side view of FIG.

FIG. 17 is a view corresponding to FIG. 13 showing a state in which the tongue piece is tilted in a direction away from the base.

FIG. 18 is a cross-sectional view of an outer lid showing a sixth embodiment of the present invention.

FIG. 19 is a bottom view of FIG. 18;

FIG. 20 is a plan view of FIG. 18;

FIG. 21 is a left side view of FIG. 18.

FIG. 22 is a diagram corresponding to FIG. 21, showing a state in which the tongue piece is tilted away from the base.

FIG. 23 is a cross-sectional view of an outer lid showing a seventh embodiment of the present invention.

FIG. 24 is a bottom view of FIG. 23.

FIG. 25 is a plan view of FIG. 23;

FIG. 26 is a partial sectional view of FIG. 23 as viewed from the left.

FIG. 27 is an explanatory view showing a state in which the finger hook is expanded in a ring shape.

FIG. 28 is a sectional view of an outer lid showing an eighth embodiment of the present invention.

FIG. 29 is a bottom view of FIG. 28.

FIG. 30 is a plan view of FIG. 28;

FIG. 31 is a partial sectional view of FIG. 28 as viewed from the left.

FIG. 32 is an explanatory diagram showing a state before and after the finger hook is expanded in a ring shape.

FIG. 33 is a sectional view of an outer lid showing a ninth embodiment of the present invention.

FIG. 34 is a plan view of FIG. 33.

FIG. 35 is a sectional view of an outer lid showing a tenth embodiment of the present invention.

FIG. 36 is a plan view of FIG. 35;

FIG. 37 is a sectional view showing an eleventh embodiment of the present invention.

FIG. 38 is a plan view of the outer lid of FIG. 37.

FIG. 39 is a bottom view of the outer lid of FIG. 37.

FIG. 40 is an enlarged view of a main part of the outer lid of FIG. 37.

FIG. 41 is an explanatory view showing a method of performing opening by using the skirt portion of FIG. 37 as a handle portion.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Glass container 2 Liquid content 3 Thermoplastic resin layer 4 Inner lid 5,75,85 Outer lid 5a, 75a, 85a Main part 5b, 75b, 85b Hakama part 6 Silane-based coupling agent layer 7 Inner lid base material 7a Main body 7b Adhesive layer 8 Heat seal layer 9, 78 Thin part 10 Folded part 11 Unsealing guide part 12 Non-adhesive part 13 Unsealing projection 14 Slip prevention projection 20 Spot welding 21, 51 Base part 22, 62 Tongue piece 23, 87 Connecting part 30 Notch 31, 63, 77 Opening 40, 50 Finger part 51a Thick part 52 Outer part 76 Opening piece 86 Hand part 88 Discontinuous connecting part 88a Partial connecting piece

 ────────────────────────────────────────────────── ─── Continuation of the front page (71) Applicant 591113297 JR East Japan Co., Ltd. 2-2-2 Yoyogi, Shibuya-ku, Tokyo (72) Inventor Rikiyoshi Shirato 2-67 Motomoto Asakusa, Taito-ku, Tokyo Japan Matai Co., Ltd. (72) Inventor Yoichiro Shiya 3-6-8 Kutarocho, Chuo-ku, Osaka-shi, Osaka Toyo Aluminum Co., Ltd. (72) Inventor Yuichiro Hashimoto 1-17-19 Marunouchi, Naka-ku, Nagoya-shi, Aichi Prefecture No. Nihon Yamamura Glass Co., Ltd. Nagoya Branch (72) Inventor Akira Koyanagi 2-2-2 Yoyogi, Shibuya-ku, Tokyo F-term in JR East Corporation (reference) 3E084 AA02 AA12 AA32 AB02 BA02 BA03 BA06 BA08 BA09 CA01 CC04 CC05 DA01 DB01 DC04 DC05 FA09 FD13 GB08 KB01 LA01 LA17

Claims (24)

[Claims] 1. A glass container having a thermoplastic resin layer formed on an open end surface, an inner lid having an inner lid base material and a heat seal layer on a lower surface thereof, disposed on an open end of the glass container, and a cap. An outer lid made of a thermoplastic resin arranged on the glass container from the upper surface side of the inner lid, wherein the inner lid is heat-sealed to the glass container, and the both lids are bonded by heat sealing. A hermetically sealed package of glass containers, wherein the hermetically sealed package is interconnected with a contact force exceeding the force. 2. A glass container having a thermoplastic resin layer formed on an open end surface, an inner lid having an inner lid base material and a heat seal layer on a lower surface thereof, disposed on an open end of the glass container, and a cap. An outer lid made of a thermoplastic resin disposed on the glass container from the upper surface side of the inner lid, and the inner lid is heat-sealed to the glass container, and the two lids are bonded by heat sealing. A method for sealing a glass container, wherein the glass container is adhered to each other with an adhesive force exceeding a force. 3. A method of forming a silane-based coupling agent layer on an open end surface of a glass container prior to a thermoplastic resin layer,
3. The method according to claim 2, wherein the thermoplastic resin layer contains a silane coupling agent. 4. An inner lid and an outer lid are arranged on a glass container so as to be separable from each other, and heat sealing of the inner lid and the glass container and bonding of both lids are simultaneously performed. Item 4. The method for sealing a glass container according to item 2 or 3. 5. The method according to claim 1, wherein the outer lid is disposed on the glass container while the inner lid is temporarily fixed in the outer lid, and heat sealing between the inner lid and the glass container and bonding of the two lids are simultaneously performed. The method for sealing a glass container according to claim 2. 6. The method according to claim 1, further comprising bonding the inner lid to the outer lid, mounting the outer lid on a glass container, and performing heat sealing between the inner lid and the glass container from the outer surface side of the outer lid. Item 4. The method for sealing a glass container according to item 2 or 3. 7. At least a part of the inner lid base material is formed of an inductive material, and heat sealing between the inner lid and the glass container and bonding of the two lids to each other are performed using induction heating. The method for sealing a glass container according to claim 2, 3, 4, 5, or 6. 8. The inner lid and the outer lid are integrated at the time of in-mold molding of the outer lid.
The method for sealing a glass container according to the above. 9. A thermoplastic resin layer formed on the open end surface of the glass container; an inner lid heat-sealed to the glass container via a heat seal layer formed on the lower surface of the inner lid substrate; And an outer lid made of a thermoplastic resin, which is disposed on the glass container from the upper surface side of the inner lid and is fixed to the glass container by bonding to the inner lid. A sealing device for a glass container, wherein the sealing device is set to a value exceeding an adhesive force. 10. The thermoplastic resin layer has a silane coupling agent layer between itself and the opening end face of the glass container, or is formed of a thermoplastic resin containing a silane coupling agent. The sealing device for a glass container according to claim 9, characterized in that: 11. The inner lid base material includes a main body formed of an inductive material, and an adhesive layer laminated on an upper surface of the main body, wherein the adhesive layer is a thermoplastic resin that can be thermally bonded to the outer lid. 11. The method according to claim 9, wherein
A sealing device for a glass container according to the above. 12. The outer lid includes a main body having a planar shape following the outer shape of the opening end of the glass container, and a short cylindrical hakama hanging down from a peripheral edge of the main body. The sealing device for a glass container according to claim 9, wherein the sealing device has a thin portion in which a crack is generated by an external force sometimes applied to the skirt portion. 13. The thin portion is provided at two places spaced apart in the circumferential direction, and the main body portion has a thin fold on a line connecting the two thin portions with a straight line. The sealing device for a glass container according to claim 12, wherein 14. The sealing device for a glass container according to claim 13, wherein the hakama portion has two thin opening guides in the center between the thin portions. 15. The main body portion has a groove-shaped non-adhesive portion on the inner peripheral edge between the thin portions, and the non-adhesive portion is tapered from the inner surface to the outer surface at the center in the circumferential direction. The sealing device for a glass container according to claim 13, further comprising an unsealing projection projecting from the glass container. 16. A portion of the hakama portion sandwiched between the two opening guide portions includes an inner base portion and a tongue piece bent to the outer surface side of the base portion via a lower end connecting portion. The sealing device for a glass container according to claim 14, further comprising: 17. The device according to claim 1, wherein an upper end edge of the tongue piece has a mountain shape having an apex at a central portion in a circumferential direction.
7. The sealing device for a glass container according to 6. 18. The base portion and the tongue piece have a notch at the center in the circumferential direction of the connecting portion, the notch forming an opening when the tongue piece is tilted away from the base portion. The sealing device for a glass container according to claim 16, wherein 19. The sealing device for a glass container according to claim 16, wherein the tip of the tongue piece is bent along the upper surface of the main body, and an opening is provided at the tip. 20. A portion sandwiched between the two opening guide portions of the hakama portion includes an inner base portion and a finger-holding portion which is a vertical envelope-shaped cylindrical member located on the outer surface side of the base portion. With
The sealing device for a glass container according to claim 14, wherein the finger hook portion is connected to the base portion only at a central portion in the circumferential direction. 21. The finger hook portion according to claim 20, wherein the upper edge of the outer portion has a curved surface that is convex downward.
A sealing device for a glass container according to the above. 22. A portion of the hakama portion sandwiched between the two opening guide portions, a base portion having only a central portion in the circumferential direction of the upper end edge connected to the main body portion, and a base portion located outside the base portion and located outside the base portion. 15. The sealing device for a glass container according to claim 14, further comprising an outer portion forming a finger-hook portion having a flat envelope shape and a vertical cylindrical shape. 23. The outer lid includes a main body having a planar shape following the outer shape of the opening end of the glass container, and a short cylindrical hakama hanging down from a peripheral edge of the main body. It is connected to the main body through a connection part formed in a part of the direction and a discontinuous connection part formed in the remaining part, and the discontinuous connection part is cut by an external force applied to the skirt part at the time of opening. The sealing device for a glass container according to claim 9, 10 or 11, wherein: 24. The outer lid includes a main body in the shape of a donut plate having a flat shape following the outer shape of the opening end of the glass container, and a short cylindrical hakama hanging down from the periphery of the main body. The portion has an opening piece extending toward the center from the inner peripheral edge thereof and having an opening at the tip, and a thin portion or notch extending from the inner peripheral edge toward the skirt portion is provided at both sides of the opening piece through the opening piece. The sealing device for a glass container according to claim 9, 10 or 11, wherein: