JP2002362611A - Bottle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve some technical problems such as fixing of a seal piece to an upper end segment of an inner layer laminated on an upper end surface of a port and entry of the inner layer having its volume decreased and its shape deformed into the port, and to enable a seal opening of the seal piece and a discharging of stored liquid to be carried out smoothly and positively. SOLUTION: This bottle comprises a bottle body 2 and an inner plug 11. The bottle body 2 is constituted by an outer layer 3 made of synthetic resin for forming an outer bag of definite shape and an inner layer 4 made of flexible synthetic resin removably stacked on the outer layer 3 and forming an inner bag, and an upper end portion 10 of the inner layer 4 is laminated on an upper end surface of a cylindrical port 6 raised and cooperatively arranged at an upper end of a barrel. An upper end portion of an outer circumferential surface of a cylindrical wall 12 closely fitted to the port 6 is provided with an outer flange 13 in its circumference for use in holding and fixing an upper end portion 10 of the inner layer 4 between it and an upper end surface of a port part 7 of the outer layer 3, and a crossing plate 14 is protruded and arranged in a lower end part of the cylindrical wall 12. A close sealing seal piece 15 is adhered to an upper end surface of the cylindrical wall 12 of the inner plug 11 to realize a high sealing characteristic required in a food container.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an outer layer forming a fixed outer shell, and an inner layer forming a deformable inner bag is formed so as to be releasably laminated on the outer layer forming the outer shell. TECHNICAL FIELD The present invention relates to a synthetic resin blow-molded bottle that allows the content liquid to be poured out without using it.

[0002]

2. Description of the Related Art An inner layer forming a deformable inner bag is releasably laminated on an outer layer forming a fixed outer shell.
A blow molding bottle made of synthetic resin in which an anaerobic content liquid is stored in the inner layer is known.

[0003] In this bottle, usually, the upper end portion of the inner layer is overlapped with the upper end surface of the mouth portion of the outer layer, and packing mounted in a cap with a pump screwed into the mouth portion, and the upper end surface of the mouth portion of the outer layer. By holding the upper end portion of the inner layer, the upper end portion of the inner layer is fixed to the outer layer.

When such a bottle is used as a food container, after filling the bottle with the liquid content, the peripheral edge of the sealing piece is adhered to the upper end surface of the mouth with a high-frequency seal or the like to form a bottle. It is necessary to seal the part.

[0005]

However, in the above-mentioned bottle, since the upper end portion of the inner layer is located on the upper end surface of the mouth portion, the sealing piece is adhered to the upper end portion of the inner layer. When the mouth is sealed, the upper end portion of the inner layer is separated from the upper end surface of the outer layer together with the seal piece when the sealing piece is peeled off from the mouth when opening, so that the upper end of the inner layer is laminated on the outer layer. There is a problem that the state is easily damaged and the peeling and removal of the seal pieces cannot be performed smoothly.

In addition, a part of the inner layer, which has been reduced in volume (crushed) and deformed in accordance with use of the content liquid, enters the mouth and closes the passage of the content liquid, thereby facilitating the discharge of the content liquid. There was a problem that it could not be performed.

SUMMARY OF THE INVENTION Accordingly, the present invention has been made to solve the above-mentioned problems in the prior art, and avoids the attachment of the sealing piece to the upper end portion of the inner layer laminated on the upper end surface of the mouth and reduces the volume. It is an object of the present invention to prevent a deformed inner layer from intruding into a mouth, and to smoothly and reliably open a seal piece and pour out a liquid content.

[0008]

Means for Solving the Problems Among the present invention for solving the above technical problems, the means according to the first aspect of the present invention comprises an outer layer made of a synthetic resin for forming a fixed outer shell by blow molding;
The inner layer made of a flexible synthetic resin, which is releasably laminated on the outer layer and forms an inner bag, is provided on the upper end surface of a cylindrical mouth portion erected at the upper end of the body portion. The bottle body having an upper end portion laminated thereon, an outer portion for holding and fixing the upper end portion of the inner layer between the upper end portion of the outer portion of the outer wall and the upper end portion of the outer peripheral surface of the cylindrical wall closely fitted to the mouth portion of the bottle body. A seal member for sealing, which is provided with a flange around the inner wall and a crossover plate provided in the lower end portion of the cylindrical wall and which is peelably adhered to the upper end surface of the cylindrical wall of the inner plug. Having.

For sealing after filling the content liquid, the lower peripheral edge of the sealing piece is peelably adhered to the upper end surface of the inner wall of the inner plug body, which is separate from the bottle body having the two-layer structure, using a high frequency seal or the like. It does by doing.

Since the opening is performed by peeling and removing the sealing piece from the upper end face of the inner wall of the inner plug, the opening can be smoothly and reliably achieved, and the laminated state of the upper end of the inner layer at the mouth of the bottle body. There is no risk of adversely affecting

Since the cross plate is provided at the lower end of the cylindrical wall of the inner plug, a part of the inner layer reduced in volume due to the use of the content liquid may enter the cylindrical wall, that is, into the mouth. Can be prevented, so that a passage for the content liquid is always ensured.

A second aspect of the present invention is the same as the first aspect of the invention, except that the lower portion of the cross plate of the inner plug extends to near the bottom of the bottle body.

According to the second aspect of the present invention, even if the inner layer is flattened and deformed due to the use of the content liquid, the content liquid passage is secured around the cross plate, so that the content liquid can be removed. Dispensing to the end can be achieved smoothly and reliably.

According to a third aspect of the present invention, in addition to the configuration of the first aspect of the present invention, a seal having a high gas barrier property is used as a seal piece.

According to the third aspect of the present invention, it is possible to prevent the penetration of oxygen through the seal piece and the generation of the scattering of volatile components contained in the content liquid. Demonstrates the excellent hermeticity of the liquid contents.

[0016]

Embodiments of the present invention will be described below with reference to the drawings. FIGS. 1 to 4 show a first embodiment, in which a bottle 1 forms a fixed outer shell and has a polyethylene outer layer 3 having a squeezing property and a high gas barrier property. An inner layer 4 forming a deformable inner bag having a laminated structure mainly composed of nylon and a pair of adhesive bands 5 made of an adhesive resin (see FIG. 4) are formed into a laminated cylindrical shape by co-extrusion molding means. It comprises a bottle body 2 blow-molded from an extruded parison, and an inner plug 11 closely fitted into the mouth 6 of the bottle body 2.

A thread 8 for screwing and attaching a pouring cap 20 is formed on the outer peripheral surface of the mouth portion 7 of the outer layer 3 constituting the mouth 6 of the bottle body 2. At a position avoiding the lower adhesive band 5, an air inlet 9 for allowing outside air to enter between the outer layer 3 and the inner layer 4 is opened. Are laminated.

A pair of adhesive bands 5 for bonding and fixing a part of the outer layer 3 and the inner layer 4 are formed relatively wide over the entire height range at symmetrical positions of the bottle main body 2.
Can be progressed in a substantially constant form that flatly collapses, and a passage 16 for the content liquid is secured inside each adhesive band 5 (see FIG. 4).

The inner plug 11 is a cylindrical wall 1 that fits tightly into the mouth 6.
At the upper end of the outer peripheral surface of the outer layer 2, an outer flange 13 whose lower surface is in contact with the upper end of the mouth 6, and which clamps and fixes the upper end 10 of the inner layer 4 to the upper end of the outer layer 3, is provided. Wall 12
A cross-shaped cross plate 14 (refer to FIG. 3) is provided in the lower end portion of the base plate with its lower portion protruding downward.

After filling with the liquid content, the lower peripheral edge of a circular sealing piece 15 mainly made of aluminum foil is adhered to the upper end face of the cylindrical wall 12 by a high frequency seal or the like so as to be peelable. Seal.

The spout cap 20 has a spout 31 and is attached to the mouth 6 of the bottle body 2, a seal body 35 provided inside the cap body 21, and a spout 31.
And an upper cap 44 that opens and closes.

The cap body 21 is provided with the mouth portion 7 of the outer layer 3.
A thread 23 screwed into the thread 8 is engraved on the inner peripheral surface, and a seal thread 24 closely contacting with the outer layer 3 is protruded at the lower end of the inner peripheral surface. A screw tube 26 having a thread 27 engraved on the outer peripheral surface is erected through the top wall 25, and a plurality of ventilation holes 29 are opened inside the screw tube 26 via a flange wall 28 at the upper end. A pouring tube 30 is continuously provided, and a pouring outlet 31 is formed inside the pouring tube 30, and a ventilation path 34 is formed between the pouring tube 30 and the outer screw tube 26.

The lower end of the outer peripheral surface of the injection cylinder 30 is reduced in diameter through a step, and an injection valve 32 is disposed in the lower end via a connecting portion 33.

The opening 3 opened and closed by the injection valve 32
The seal body 35 having the opening 6 at the center has an engaging groove 37 in which the lower end portion of the pouring cylinder 30 is fitted on the upper surface, and an inner cylindrical piece 38 is erected outside the upper surface. A sealing ridge 39 closely contacting the upper end surface of the cylindrical wall 12 of the inner plug body 11 is provided around, and a fitting cylindrical piece 40 externally fitted to the upper end of the cylindrical wall 12 is provided outside the sealing ridge 39. An outer cylinder piece 41 which is in close contact with the inner surfaces of the assembled cylinder 22 and the top wall 25 and has a plurality of ventilation holes 42 is continuously provided on the periphery.

Above the seal body 35, the base end is fixedly held by the upper end surface of the inner cylinder piece 38 and the step of the pouring cylinder 30, and the upper surface of the distal end is in close contact with the lower surface of the top wall 25. A ring-shaped intake valve 43 that opens and closes the ventilation path 34 is provided.

The upper cap 44 has a thread 45 screwed into the thread 27 of the cap body 21 formed on the inner peripheral surface of the peripheral wall. The plug barrel piece 46 to be fitted and the seal barrel piece 47 to be tightly fitted are each provided by hanging down.

The function of the pouring cap 20 will now be described. In pouring out the contents liquid, the upper cap 44 is removed, the bottle 1 is tilted, and the body is pressed. Is opened and the content liquid is poured out from the spout 31. Then, when the pressure of the body is released, the squeezable outer layer 3 attempts to return to its original shape. During which a negative pressure is generated.

Since the intake valve 43 is opened by the negative pressure, the outside air flows from the ventilation port 29 to the ventilation path 34 in the cap body 21.
To the intake valve 43 and the vent hole 42 of the seal body 35.
Through the space between the outer layer 3 and the inner layer 4 from the air inlet 9 through the space between the screw 23 of the assembled cylinder 22 and the screw 8 of the mouth 6, so that the outer layer 3 has Return is achieved smoothly and quickly.

As the pouring cap 20, a conventional cap with a pump is used, and the outer layer 3 of the main body 2 is used.
May be configured as a non-squeezing hard material.

In the second embodiment shown in FIGS. 5 and 6, the lower part of the crossing plate 14 of the inner plug 11 is extended to the vicinity of the bottom in the bottle body 2, whereby the inner layer is formed. Even if the plate 4 is flattened and deformed, the content liquid passage 16
As a result, a good suction passage for the content liquid is reliably formed in the center of the bottle 1 over the entire height range of the bottle 1 without being affected by the wilt deformation of the inner layer 4. (See FIG. 6).

[0031]

Since the present invention has the above-described structure, the following effects can be obtained. After filling the contents,
This is performed by attaching a sealing piece to the upper end surface of the inner wall of the inner plug body, which is separate from the bottle body having the two-layer structure. Opening is performed by peeling and removing the sealing piece from the upper end surface of the inner wall of the inner plug body. , The opening can be achieved smoothly and reliably, and there is no possibility of adversely affecting the state of lamination of the upper end portion of the inner layer at the mouth of the bottle main body. Can be suitably used.

Since the crossing plate is erected at the lower end of the cylindrical wall of the inner plug, a part of the inner layer reduced in volume by pouring and using the content liquid enters the cylindrical wall, that is, into the mouth. Thus, the passage of the content liquid is always secured, and the pouring can be smoothly and reliably achieved.

[Brief description of the drawings]

FIG. 1 is an overall front view showing a main part in a half cross section, showing an embodiment of the present invention.

FIG. 2 is an enlarged semi-longitudinal sectional view of a main part of the embodiment shown in FIG. 1;

FIG. 3 is a plan view of the inner plug in the embodiment shown in FIG. 1;

FIG. 4 is a sectional view taken along line AA in FIG.

FIG. 5 is an overall front view showing a main part in a half section, showing a second embodiment.

FIG. 6 is a sectional view taken along line BB in FIG. 5;

[Explanation of symbols]

 1; Bottle 2; Bottle main body 3; Outer layer 4; Inner layer 5; Adhesive band 6; Mouth 7; Mouth portion 8; Screw 9; Inlet 10; Top end portion 11; Outer flange 14; Crossing plate 15; Sealing piece 16; Passage 20; Outlet cap 21; Cap body 22; Assembled cylinder 23; Screw 24; Seal strip 25; Top wall 26; Screw cylinder 27; Wall 29; Vent 30; Outlet tube 31; Outlet 32; Outlet valve 33; Connecting portion 34; Vent 35; Seal body 36; Opening 37; Engagement groove 38; Inner tube 39; 40; fitting cylinder piece 41; outer cylinder piece 42; vent hole 43; intake valve 44; upper cap 45: screw thread 46; stopper cylinder piece 47;

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) B65D 51/24 B65D 51/24 Z F-term (Reference) 3E061 AA24 AB11 DA02 DA12 DB11 3E084 AA04 AA12 AA24 AB01 BA03 BA09 CA01 CB02 CC03 DA01 DB12 DC03 EA04 EB02 EC03 FB02 FD13 GA04 GB04 GB08 HA01 HC08 HD01 KA05 LA01 LA17 LD12

Claims (3)

[Claims] 1. An outer layer (3) made of synthetic resin forming a fixed outer shell by blow molding, and a flexible synthetic resin layer formed on the outer layer (3) so as to be releasable and forming an inner bag. A cylindrical mouth that is composed of the inner layer (4) and is erected at the upper end of the trunk.
The bottle body (2) in which the upper end portion (10) of the inner layer (4) is laminated on the upper end surface of (6), and the upper end portion of the outer peripheral surface of the cylindrical wall (12) closely fitted to the mouth (6) An outer flange (13) for sandwiching and fixing an upper end portion (10) of the inner layer (4) is provided between the outer wall (7) and an upper end surface of the outer layer (3). An inner plug (11) having a cross plate (14) installed in the lower end of the inner plug (11), and a cylindrical wall (1) of the inner plug (11).
2) Seal piece for sealing (15), which is detachably adhered to the upper end surface
And a bottle consisting of 2. The bottle body according to claim 1, wherein the lower part of the cross plate (14) of the inner plug body (11) extends to near the bottom of the bottle body (2). 3. The bottle according to claim 1, wherein a seal having a high gas barrier property is used as the seal piece (15).