JP2000016442A - Synthetic resin tube container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a synthetic resin tube container in which oxidization of items stored therein can be prevented. SOLUTION: A head member 5 having a first neck part 4 raised therefrom is connected to the upper end of a laminated barrel 2 having an aluminum layer. A synthetic resin shoulder pad 11 through which oxygen is hardly permeated is fitted into the upper part of a tube container main body 1 where an outer circumference of a resilient valve plate 6 fitted into the upper end of the first opening neck and an inner surface of the upper end of the first opening neck are connected by a few connecting elements. A feeding-out hole formed by an inward flange at the upper end of the second opening neck 13 of the shoulder pad is covered by the resilient valve plate 6 to make a discharging valve 17.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a synthetic resin tube container.

[0002]

2. Description of the Related Art Tube containers made of synthetic resin are widely used in the past. However, since the trunk of the container has elasticity, after the contents are poured out by pressing the trunk, the trunk is released when the trunk is released. The part recovers elasticity and sucks outside air into the trunk. Normally, the outside air can be entered. However, depending on the stored items, oxidation due to the inflow of outside air is not preferable. In such a case, a check valve is provided at the outlet for discharging the stored items as shown in Japanese Utility Model Laid-Open No. 1-100753. It is also known that the body is made of a laminated tube containing an aluminum layer in order to prevent oxygen in the outside air from entering the body through the body.

[0003]

The synthetic resin tube container is usually formed by connecting the upper end of the body to the upper end of the shoulder, and the lower end of the outer periphery of the shoulder of the head member erecting the mouth and neck from the upper end of the shoulder.
It is technically difficult to form a laminate containing an aluminum layer at the shoulder and the mouth and neck.

[0004] Therefore, even if the body is laminated with an aluminum layer to prevent oxygen permeation from the body, oxygen permeation from the shoulder and the mouth and neck cannot be prevented. By making the mouth and neck thick, the oxygen permeation is prevented.

According to the present invention, the oxidation of the contents in the container is formed by a pad made of a synthetic resin fitted into the upper part of the container, a mouth of the pad, and a mouth at the upper end of the neck of the container. The check valve is provided so as to be able to be used.

[0006]

As a first means, the first upper portion of the first shoulder portion 3 is moved from the upper end of the first shoulder portion 3 to the upper end of the laminated body 2 containing the aluminum layer 2b.
The outer periphery of the lower end of the first shoulder of the head member 5 that stands up the mouth and neck 4 is connected, and the inner periphery of the upper end of the first mouth and neck and the outer periphery of the elastic valve plate 6 fitted into the upper end are substantially equal. The synthetic resin tube container body 1 connected integrally via several connectors 7 at intervals, and the second mouth and neck portion 13 standing from the upper end of the second shoulder portion 12 and from the outer periphery of the lower end of the second shoulder portion Hang the short tube part 14,
Further, a shoulder pad 11 made of a synthetic resin made of a material that is hardly permeable to oxygen, which is provided with an inward flange 15 at the upper end of the second mouth and neck, is fitted with the shoulder pad into the upper portion of the tube container body.
The second mouth-and-neck portion is brought into close contact with the inner surface of the first mouth-and-neck portion, the second shoulder portion 12 is brought into close contact with the first shoulder inner surface, and the short tube portion 14 is brought into close contact with the upper end portion inside surface of the body portion 2. 15 Elastic valve plate 6
The outer periphery is placed and the discharge hole 16 formed by the flange hole of the flange is sealed with the elastic valve plate 6, and the valve plate portion between the connectors 7 is elastically deformed due to the outflow of the fluid in the body by pressing the laminated body 2. As a result, the discharge valve 17 formed by the upper surface of the inward flange 15 and the elastic valve plate is formed so as to be openable.

[0007] As a second means, the outer periphery of the lower end of the first shoulder portion of the head member 5 erecting the first mouth and neck portion 4 from the upper end of the first shoulder portion 3 is connected to the upper end of the laminated body containing the aluminum layer. 1
The upper end inner surface of the mouth and neck and the outer periphery of the valve plate 22 fitted into the upper end were integrally connected via elastic pieces 21 of the same length projecting in the same circumferential direction from a small number of places at substantially equal intervals. The tube container body 1 made of synthetic resin and the second shoulder 12
The mouth and neck 13 is erected, and the short cylindrical portion 14 is hung from the outer periphery of the lower end of the second shoulder.
And a synthetic resin shoulder pad 11 made of a material that is difficult to transmit oxygen. The shoulder pad is fitted into the upper portion of the tube container body, and the second mouth and neck is attached to the inner surface of the first mouth and neck. The second shoulder to the inner surface of one shoulder, the short cylindrical portion 14 to the inner surface of the upper end of the trunk 2,
The valve plate 22 is placed close to the inward flange 15 and the outer periphery of the valve plate 22 is placed on the inward flange 15. The discharge hole 16 formed by the flange hole of the flange is sealed with the valve plate 22, and the flow in the trunk by pressing the laminated trunk is compressed. The valve plate 22 was pushed up against the elasticity of the elastic piece 21 due to the outflow of the body, and the discharge valve formed by the upper surface of the inward flange and the valve plate 22 was formed to be openable.

[0008]

BRIEF DESCRIPTION OF THE DRAWINGS FIG.
Is a container body made of synthetic resin, and the container body is a cylindrical laminated body 2 containing an aluminum layer 2b formed in advance as shown in FIG.
The outer periphery of the lower end of the first shoulder portion of the head member 5 formed by erecting the first mouth / neck portion 4 from the upper end of the tapered first shoulder portion 3 having the upper small diameter is connected to the upper end. In the illustrated example, the body is formed of four layers: an inner layer 2a, an aluminum layer 2b, a pattern printing layer 2c, and an outer layer 2d, and all layers other than the aluminum layer are made of synthetic resin. The head member 5 is integrally formed of a synthetic resin material. A male screw for cap screwing is provided on the outer surface of the first mouth and neck, and the upper end of the first mouth and neck is above it via an inward bent portion. The portion has a small outside diameter and a small inside diameter. An elastic valve plate 6 is fitted into the upper end of the first mouth and neck,
The outer periphery of the valve plate and the inner surface of the upper end of the first neck portion are integrally connected at left, right, front and rear by two connectors 7,7.

Reference numeral 11 stands up from the upper end of the second shoulder portion 12 to the second mouth and neck portion 13 and hangs the short cylindrical portion 14 from the outer periphery of the lower end of the second shoulder portion. The flange hole formed by the inward flange of the shoulder pad made of a synthetic resin and provided with is provided as the pouring hole 16. The second mouth and neck 13
The upper part is formed as a small outer diameter part via an upward step, and the upward step is engaged with the downward step on the inner surface of the first mouth and neck described above,
A small outer diameter portion is tightly fitted to the upper inner surface of the first mouth and neck so that the second mouth and neck 13 does not move upward with respect to the first mouth and neck 4. The second shoulder is provided on the inner surface of the first shoulder, and the short tube portion 14 is provided on the inner surface of the upper portion of the body 2 in close contact with each other.

The inward flange 16 at the upper end of the second neck 13 is
The discharge valve 17 is formed by the elastic valve plate 6 described above. The discharge hole 16 is sealed by the elastic valve plate 6, and the outer periphery of the elastic valve plate 6 is placed on the upper surface of the inward flange 15.

The shoulder pad 11 is integrally formed of a synthetic resin which is hardly permeable to oxygen, for example, polyacetal.

In the tube container, a shoulder pad 11 is fitted into the upper portion of the tube container body before closing the lower end of the body portion.
Next, after the fluid is filled into the body from the lower end opening, the lower end opening of the body is sandwiched and sealed in a plate shape.

In the case of the above-described embodiment, the body is squeezed as shown in FIG.
As shown in the figure, the left and right sides of the elastic valve plate 6 between the front and rear connectors 7, 7 are pushed up by the fluid extruded from the pouring hole 16 to open the discharge valve. The elastic valve plate elastically returns, and closes the discharge valve 17.

In the embodiment described above, the connectors 7, 7 of the elastic valve plate are provided at the front and rear two places on the inner surface of the upper end of the first mouth and neck 4, but as shown in FIG. May be provided at substantially equal intervals at three locations, and the connector may be replaced with two or three elastic pieces 21 as shown in FIGS. 6B and 6C.

In the case of the elastic piece, the inner surface of the upper end of the first neck portion 4 and the outer periphery of the valve plate 22 are passed through a plurality of elastic pieces 21 of the same length which project in the same circumferential direction from a small number of places at substantially equal intervals. And connect them together. In this case, the elastic pieces are elastically deformed upward against the elasticity due to the rise of the valve plate 22 due to the outflow of the fluid, and the elastic pieces are elastically restored by stopping the outflow of the effluent, thereby closing the pouring hole 16. Therefore, the valve plate 22 does not need to be elastically deformed.

[0016]

According to the present invention, the body of the container is a laminated body containing the aluminum layer 2b, and the upper part of the container body is provided with a second mouth and neck from the upper end of the second shoulder 12. The synthetic resin shoulder pad 11 made of a material which is hardly permeable to oxygen, and which hangs the short cylindrical portion 14 from the outer periphery of the second shoulder portion, is inserted into the first neck portion 4 of the container body. Since the second shoulder 13 is fitted to the inner surface of the first shoulder and the short cylindrical portion 14 is fitted to the inner surface of the upper end of the body 2, the body, the shoulder, and the It is possible to prevent oxygen in the outside air from entering the container through the mouth and neck.

In addition, the spout hole 16 of the inward flange 15 of the shoulder pad is connected to the container mouth by several connectors 7 at substantially equal intervals into the upper end of the first mouth and neck of the tube container body. The discharge valve 17 is formed by being closed by the elastic valve plate 6 provided in this manner. Therefore, even if outside air tries to flow into the container through the above-mentioned discharge hole after the fluid is poured out of the container, the outside air is blocked by the discharge valve. Does not flow in, so that oxidation of the contents in the container can be prevented.

The upper end inner surface of the first mouth and neck portion 4 and the outer periphery of the valve plate 22 fitted into the upper end portion are provided with elastic pieces 21 of the same length protruding in the same circumferential direction from a small number of places at substantially equal intervals. And the valve plate 22 closes the pouring hole 17 of the inward flange 15 at the upper end of the shoulder pad second mouth and neck which is made of a material which is difficult to transmit oxygen and which is fitted into the upper part of the container body by the valve plate 22. In this case, the plurality of elastic pieces 21 are pushed up against the elasticity, and the valve plate 22 opens and closes the pouring hole 17 by being elastically restored, so that in this case, the valve plate 22 can be elastically deformed. Since the elastic piece can be formed relatively long, the stress at the time of elastic deformation can be dispersed, so that the elastic fatigue of the elastic piece can be reduced and the durability can be increased.

[Brief description of the drawings]

FIG. 1 is a half sectional view of the container of the present invention.

FIG. 2 is an enlarged sectional view of a main part of FIG.

FIG. 3 is a plan view of the container in FIG. 1;

FIG. 4 is an exploded perspective view of the container in FIG. 1;

FIG. 5 is a cross-sectional view of a main part, showing a deformed state of the elastic valve plate at the time of discharging contents stored in the container.

FIGS. 6A, 6B, and 6C are plan views each showing a modified example of the valve plate. 2 ... Body 2b ... Aluminum layer 5 ...
Head member 6 ... Elastic valve plate 7 ... Connector 11 ... Shoulder pad 16 ... Pouring hole 21 ... Elastic piece 22 ... Valve plate

Claims (2)

[Claims] 1. A head member (5) that erects a first mouth and neck (4) from an upper end of a first shoulder (3) to an upper end of a laminated body (2) containing an aluminum layer (2b).
The outer periphery of the lower end of the first shoulder portion is connected to the inner periphery of the upper end of the first neck portion and the outer periphery of the elastic valve plate 6 fitted into the upper end through several connectors 7 at substantially equal intervals. And a tube body 1 made of synthetic resin integrally connected to the second shoulder portion 12. The second neck portion 13 is erected from the upper end of the second shoulder portion 12, and the short cylindrical portion 14 is suspended from the outer periphery of the lower end of the second shoulder portion. The shoulder pad 11 is made of a synthetic resin made of a material that is hardly permeable to oxygen and has an inward flange 15 attached to the upper end of the neck portion of the mouth and neck.
The second mouth and neck to the inside of the mouth and neck, and the second shoulder 12 to the inside of the first shoulder
The short cylindrical portion 14 is brought into close contact with the inner surface of the upper end portion of the body portion 2, and the outer periphery of the elastic valve plate 6 is placed on the inward flange 15, and a spout hole 16 is formed by the flange hole of the flange. Is sealed by an elastic valve plate 6, and the valve plate portion between the connectors 7 is elastically deformed and pushed up by the outflow of the fluid in the body by pressing the laminated body 2, whereby the inward flange 15 is pressed.
A synthetic resin tube container, wherein a discharge valve 17 formed by an upper surface and an elastic valve plate is formed to be openable. 2. An outer periphery of a lower end of a first shoulder portion of a head member 5 for erecting a first mouth and neck portion 4 from an upper end of a first shoulder portion 3 is connected to an upper end of a laminated body portion containing an aluminum layer. Synthetic resin in which the inner surface of the upper end of the portion and the outer periphery of the valve plate 22 fitted into the upper end are integrally connected via elastic pieces 21 of the same length protruding in the same circumferential direction from a small number of locations at substantially equal intervals. And a second neck portion 13 standing from the upper end of the second shoulder portion 12, a short tube portion 14 hanging down from the outer periphery of the lower end of the second shoulder portion, and further into the upper end of the second neck portion. A synthetic resin shoulder pad 11 made of a material that is hardly permeable to oxygen and provided with an orientation flange 15.
The second neck and neck are attached to the inside of the mouth and neck, the second shoulder is attached to the inside of the first shoulder, and the short cylinder 14 is attached to the inside of the upper end of the body 2. The outer periphery of the valve plate 22 is placed, and the spout hole 16 formed by the flange hole of the flange is sealed with the valve plate 22. A synthetic resin tube container characterized in that it is pushed up against elasticity and a discharge valve formed by an upper surface of an inward flange and a valve plate 22 is openable.