JP2003012011A - Extraction cap - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an extraction cap to be well fitted with a bottle with a double-layered structure comprising an outer layer which forms a regular outer shell and is squeezable and an inner layer forming a deformable inner bag. SOLUTION: The extraction cap comprises a cap body 21 having a threaded tube 26 standing inside an upper end of an assembling tube 22 to be threaded with a mouth 6 of a bottle body 1 and an extraction tube 30 connected inside the threaded tube 26, which is formed with an extraction port 31 inside the extraction tube 30 and a vent line 34 between the body 21 and the tube 26, respectively. The extraction cap also comprises a seal body 35 provided in the cap body 21 and has an opening 36 at the center and a vent hole 42 on a periphery respectively opened, an extraction valve 32 provided at an upper end of the opening 36, an intake valve 43 provided at a lower end of the vent line 34 and an upper cap 44 mounted on the threaded tube 26 for opening/closing the extraction tube 30. Squeezability of an outer layer 3 of the bottle body 1 is utilized to extract a content liquid, while attaining contractive deformation of an inner layer 4 and restoration to an original shape of the outer layer 3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mouth part of a synthetic resin bottle body, which is formed by releasably laminating an inner layer forming a deformable inner bag inside an outer layer forming a regular outer shell. The present invention relates to a pouring cap used with the cap.

[0002]

2. Description of the Related Art An inner layer forming a deformable inner bag is removably laminated inside an outer layer forming a regular outer shell,
There is known a synthetic resin blow-molded bottle body that stores an anaerobic content liquid in such a manner that outside air does not enter the inner layer.

A cap with a pump is usually attached to the mouth of this bottle as a pouring cap, and by pushing the pump, the liquid content in the inner layer is poured out and the volume of the inner layer is reduced. It is configured to be deformed.

[0004]

By the way, recently, it has been considered that a bottle of this type having a two-layer structure is formed into a squeeze container to be used as a food container.
Since the pouring of the content liquid is not the pump operation of the cap with the pump but the squeeze operation of the bottle body,
New spout caps are needed to replace traditional pump caps.

Therefore, the present invention was devised in view of the above problems, and is composed of an outer layer forming a regular outer shell and having a squeeze property, and an inner layer forming a deformable inner bag. It is an object of the present invention to provide a pouring cap that fits well to a bottle having a two-layer structure.

[0006]

[Means for Solving the Problems] [Means for Solving the Problems] Among the present invention for solving the above technical problems, the means for carrying out the invention according to claim 1 is to form an outer shell of a fixed shape and an outer layer made of a synthetic resin having a squeeze property. , A flexible synthetic resin inner layer that is peelably laminated on the outer layer and forms an inner bag, and is an outer layer of a cylindrical mouth portion standing upright on the upper end of the body and an outer layer of the mouth portion. It is a spout cap that is attached to the mouth of the bottle that has an intake port that allows the outside air to enter between the inner layer and the inner layer. Around the surface,
Inside the upper end of the assembled cylinder that is screwed onto the outer periphery of the mouth, a screw cylinder is erected upright via the top wall, and inside this screw cylinder, the flange wall of the upper end that opens a vent is inserted. And a cap body in which a spout is formed inside the spout and an air passage is formed between the spout and the outer screw.
The cap body is closely attached to the lower end of the spouting cylinder of the cap body and the upper end of the inner peripheral surface of the assembling cylinder, and has a seal body having an opening at the center and a ventilation hole at the periphery. Having a check valve which is a check valve arranged at the upper end of the opening of the cap body, and having an intake valve which is a check valve arranged at the lower end of the air passage of the cap body.
It has an upper cap that is screwed to the outer periphery of the screw cylinder of the cap body and that opens and closes the spout.

When the spout cap is attached to the bottle mouth portion, the inside of the assembling cylinder is sealed by the intake valve, the seal body and the seal strip, and communicates between the outer layer and the inner layer through the air inlet.

When the content liquid is poured out, the upper cap is removed, the bottle is tilted, and the body is pressed, the liquid pressure of the content liquid opens the pouring valve, and the content liquid is poured out from the pouring outlet. When the pressure on the body is released, the squeeze outer layer tries to return to its original shape, so that a negative pressure is generated between the outer layer and the volume-deformed inner layer.

Since the intake valve opens due to this negative pressure, outside air enters the ventilation passage in the cap body from the ventilation hole, passes through the ventilation hole of the seal body from the intake valve, and further the screw and the mouth portion of the assembling cylinder. Since it penetrates between the outer layer and the inner layer from the intake port through the gap between the outer layer and the inner thread, the outer layer and the inner layer are separated from each other, and the outer layer is smoothly and quickly restored to its original shape. .

According to a second aspect of the present invention, in the structure of the first aspect of the invention, an inner plug body, in which an upper end opening is adhered and sealed with an easily peelable seal piece, is tightly fitted into the mouth of the bottle. In the assembled structure, a seal ridge that closely contacts the upper end surface of the inner plug is provided around the lower surface of the seal body facing the upper end surface of the inner plug.

According to the second aspect of the present invention, it is possible to firmly and reliably achieve the hermetically-sealing of the bottle body by the spouting cap after the peeling and removal of the seal piece also serving as the virgin seal.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below with reference to the drawings. Pouring cap 2 according to the present invention
The bottle 1 to which 0 is assembled is a polyethylene outer layer 3 that forms a regular outer shell and has squeeze properties, a nylon inner layer 4 that forms a deformable inner bag, and a pair of adhesive resin. The adhesive band 5 (see FIG. 4) is blow-molded from a parison extruded into a laminated cylindrical shape by coextrusion molding means, and the mouth portion 6 of the bottle body 2 is tightly fitted and assembled. The inner plug body 11 and

On the outer layer mouth portion 7 which constitutes the mouth portion 6 of the bottle body 2, a screw thread 8 for screwing and assembling the spout cap 20 is engraved on the outer peripheral surface, and below An intake port 9 for allowing outside air to enter is provided between the outer layer 3 and the inner layer 4 at a position avoiding the adhesive band 5, and the upper end surface of the stepped portion has an upper end portion of the inner layer 4. 10 are stacked.

A pair of adhesive bands 5 for adhesively fixing a part of the outer layer 3 and the inner layer 4 are formed at relatively symmetrical positions of the bottle body 2 over the entire height range, whereby the inner layer 4 is formed.
The volume-reducing deformation can be progressed in a substantially constant shape that flatly collapses, and the passage 16 for the content liquid is secured inward and inward of each adhesive band 5 (see FIG. 4).

The inner plug 11 made of soft polyethylene resin is
The lower surface abuts the upper end surface of the mouth portion 6 at the upper end portion of the outer peripheral surface of the cylindrical wall 12 that is tightly fitted in the mouth portion 6, and firmly clamps and fixes the upper end portion 10 of the inner layer 4 with the upper end surface of the outer layer 3. Outer flange 1
3 is provided around, and a cross-shaped cross plate 14 (see FIG. 3) is erected in the lower end of the cylindrical wall 12 with its lower portion protruding downward.

After filling the content liquid with the upper end surface of the cylindrical wall 12, a peripheral edge of the lower surface of a circular seal piece 15 mainly made of aluminum foil is releasably adhered by a high-frequency seal or the like, and the bottle body 1 Seal.

By providing the crossing plate 14, it is possible to prevent a part of the inner layer 4 which has undergone volume reduction and deformation due to the use of the content liquid from pouring out from entering the cylindrical wall 12, that is, the mouth portion 6, Therefore, the cylindrical wall 12 is not blocked by the inner layer 4, and the passage for the content liquid is always secured.

The spout cap 20 according to the present invention has a spout 31 and is attached to the mouth portion 6 of the bottle main body 21.
And a seal body 35 installed in the cap body 21.
And an upper cap 44 that opens and closes the spout 31.

The cap body 21 is provided with a screw thread 23 which is screwed into the screw thread 8 of the outer layer mouth portion 7 on the inner peripheral surface, and the outer layer 3
A sealing strip 24 that is closely attached to the inside of the upper end of the assembling cylinder 22 that projects around the lower end of the inner circumferential surface, and a threaded strip 27 is engraved on the outer circumferential surface through an inner collar-shaped top wall 25. A pipe 26 is erected, and a spout pipe 30 is continuously provided inside the screw pipe 26 via a flange wall 28 at the upper end where a plurality of vent holes 29 are opened. And a vent passage 34 is formed between the spout 31 and the outer screw cylinder 26.

The lower end portion of the outer peripheral surface of the spout cylinder 30 of the cap body 21 is reduced in diameter through a step portion, and a spout valve 32 is arranged in the lower end portion through a connecting portion 33. .

The seal body 35 having an opening 36 opened and closed by the spout valve 32 of the cap body 21 at the center has an engaging groove 37 around which the lower end of the spout barrel 30 fits and is provided on the upper surface. , The inner cylinder piece 38 is erected on the outside thereof, and the lower surface is
A sealing ridge 39 closely contacting the upper end surface of the cylindrical wall 12 of the inner plug 11 is provided around the sealing ridge 39, and a fitting cylindrical piece 40 externally fitted to the upper end portion of the cylindrical wall 12 is hung outside thereof. Further, 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 peripheral edge.

Above the seal body 35, the base end portion is clamped and fixed by the upper end surface of the inner cylinder piece 38 and the stepped portion of the spout cylinder 30, and the upper surface of the distal end portion 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 threadedly engaged with the thread 27 of the cap body 21 on the inner peripheral surface of the peripheral wall, and has a seal on the lower surface of the top wall at the upper end of the spout cylinder 30. A plug cylinder piece 46 to be fitted and a seal cylinder piece 47 to be tightly fitted are respectively hung down.

Until the consumer purchases the bottle body 1, the bottle cap 2 is kept in a sealed state with the seal piece 15.
0 is assembled. In this configuration, the seal piece 15 effectively exhibits excellent sealing performance, and the seal piece 15 having mechanical strength is never sufficient.
The dispensing cap 20 protects.

After peeling and removing the seal piece 15, the seal ridge 39 of the seal body 35 is brought into close contact with the upper end surface of the inner plug body 11 to secure the close assembly of the cap body 21 to the bottle body 1. Therefore, the opening and closing of the bottle body 1 can be achieved without trouble by attaching and detaching the upper cap 44 to and from the cap body 21.

[0026]

Since the present invention has the above-mentioned structure, it has the following effects. According to the invention of claim 1, by using this type of two-layer structure and by assembling to a squeeze bottle, the content liquid is poured out by the squeeze operation of this bottle, and thereafter, The restoration of the outer layer to the original shape can be achieved smoothly and surely, so that a good use condition can be obtained.

According to the second aspect of the present invention, by providing the seal piece, the bottle body is secured to be sealed before opening, and the bottle body is stably sealed even after peeling and removing the seal piece. It is possible to obtain a safe bottle usage condition.

[Brief description of drawings]

FIG. 1 is a semi-longitudinal front view showing an embodiment of the present invention assembled in a bottle.

FIG. 2 is an enlarged semi-longitudinal sectional view of an essential part of the embodiment shown in FIG.

FIG. 3 is a plan view of an inner plug body in the embodiment shown in FIG.

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

[Explanation of symbols]

1; Bottle 2; Bottle body 3; Outer layer 4; Inner layer 5; Adhesive band 6; Mouth 7; Outer layer mouth part 8; Thread 9; Intake port 10; Top part 11; Inner plug 12; Tube wall 13; Outer flange 14; Crossing board 15; Seal piece 16; passage 20; Dispensing cap 21; Cap body 22; Tube with assembly 23; Thread 24; Seal strip 25; Top wall 26; screw cylinder 27; Thread 28; Flange wall 29; Vent 30; Discharge cylinder 31; outlet 32; Discharge valve 33; Connection part 34; Ventilation path 35; Seal body 36; opening 37; Engagement groove 38; Inner tube piece 39; Seal ridge 40; Fitting cylinder piece 41; External cylinder piece 42; Vent 43; Intake valve 44; Top cap 45: Thread 46; Stopper piece 47; Seal tube piece

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁷ Identification code FI theme code (reference) B65D 47/06 B65D 47/06 H 47/20 47/20 W 51/20 51/20 F term (reference) 3E061 AA24 AB09 DA02 DA08 DA11 DB06 3E062 AA09 AB02 AC02 JA07 JB12 JC02 3E084 AA04 AA12 AA25 AA35 AB01 BA02 BA06 CA01 CC03 DA01 DB12 DC03 EA02 EB02 EC03 FA09 LB01 HC01 HD14 KA01 HC02 HD04 KA01 HC02 HD04 KA01

Claims (2)

[Claims] 1. An outer layer (3) made of synthetic resin having a squeezing property and forming a regular outer shell, and a flexible synthetic resin which is releasably laminated on the outer layer (3) to form an inner bag. Inner lining (4)
And a cylindrical mouth that stands upright on the upper end of the body
In the outer layer mouth portion (7) of (6), the mouth portion (6) of the bottle body (1) in which an intake port (9) for allowing outside air to enter is provided between the outer layer (3) and the inner layer (4). ), The sealing strip (2) that is in close contact with the lower layer of the outer layer (3) below the air inlet (9).
4) is projectingly provided on the inner peripheral surface, and inside the upper end of the assembling cylinder (22) that is screwed onto the outer periphery of the mouth (6), the screw cylinder (26) via the top wall (25).
And the inside of the screw cylinder (26), the spout cylinder (30) is continuously provided through the flange wall (28) at the upper end where the vent hole (29) is opened, A cap body (21) in which a spout (31) is formed inside the tube (30), and a vent passage (34) is formed between the screw tube (26) and the spout tube (30). ) Lower end and assembled tube (2
A seal body (35) in which the cap body (21) is closely attached to the upper end of the inner peripheral surface of 2), the opening (36) is formed in the center, and the ventilation hole (42) is formed in the peripheral portion. A pouring valve (32), which is a check valve disposed at the upper end of the opening (36), and the vent passage (3
An intake valve (43), which is a check valve disposed at the lower end of 4), and an upper cap (44) that is screwed and assembled to the outer periphery of the screw cylinder (26) to open and close the spout (31). And a pouring cap. 2. A structure in which an inner plug body (11) whose upper end opening is adhered and sealed with an easily peelable seal piece (15) is tightly fitted and assembled to the mouth portion (6) of the bottle body (1). In, in the lower surface portion of the seal body (35) facing the upper end surface of the inner plug body (11), the inner plug body (11)
The spout cap according to claim 1, further comprising a seal ridge (39) which is in close contact with the upper end surface of the ridge.