JPH11292049A - Hollow container having spout, and its forming method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a liquid sealing container of double lid structure which is simple in sealing structure, tamper proof, easy in opening/closing the lid, easy in pouring the liquid content, and excellent in breaking the liquid at an opening part in pouring the liquid. SOLUTION: A body part 15 of a container and a mouth and neck part 12 are integrated with each other by blow-forming a preform in which a thermoplastic synthetic resin is formed in the specified shape, the body part 15 of the container is formed into a thin-walled hollow container 11, and forms a notched spout at a spout part 13 at a tip of the mouth and neck part 12, a flat part 12b capable of adhering a sealing piece 16 to the inner side of the spout is formed, and a cap-like outer lid 17 is formed in a fitting manner to an outer circumferential part of the spout 13, and after the desired liquid is stored in the hollow container 11, a film-like sealing piece 16 is peelably adhered to the flat part 12b, and the cap-like outer lid 17 is fitted and fixed to the outer circumferential part of the spout 13, and sealed in a double sealed condition.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hollow container in which a film material sealing an opening of a container is easily removably adhered to prevent unauthorized opening, and in particular, is poured into a mouth and neck of the container. The present invention relates to a hollow container in which a mouth is provided for facilitating pouring, and a cap for protecting a film that seals an opening and is easy to peel off is attached to a mouth and neck.

[0002]

2. Description of the Related Art In a hollow container made of a thermoplastic synthetic resin, a typical example of a container having a double sealed structure for preventing unauthorized opening is disclosed in Japanese Patent Laid-Open Publication No. Hei.
BACKGROUND ART Hollow containers provided with a spout as described in JP-A-1 and JP-A-7-9751 are generally known. These containers contain contents such as soy sauce, mirin, and edible oil inside, and are completely sealed by a mouth and neck member having a sealing portion provided with an opening piece capable of cutting off the opening of the container. As shown in FIGS. 5 and 6, a spout cylinder 32b is formed at the open end 31a of the container body 31 at the upper part inside the fitting cylinder 32a having the fitting groove. Along with
A spout 32 formed by forming a sealing top plate provided with a releasable opening piece 32d inside the spout cylinder is fitted and integrally sealed, and an outer lid such as a screw cap is attached to the spout. It is a sealed hollow container having a double lid structure to which the body 33 is fitted.

[0003] In the hollow container having the above-described structure, the liquid contained in the container can be poured out by opening the outer lid 33 and then using the removably provided inner lid. The structure is such that the contents liquid cannot be poured out unless the unsealing piece 32d provided on a certain sealing top plate portion is removed by removing it together with the knob 32c. And
Once the opening 32d is removed and the content liquid is poured out, it is impossible to replenish the content liquid again and restore the original state.

[0004] In order to form a hollow container having a spout having the above-described structure, the container has a shape that can be fitted into the opening of the container body and has an easily removable piece. A spout body provided with a sealed top plate is formed by injection molding, and the spout body integrated by fitting the spout body into an opening of the container body blow-molded separately from this. After molding into a hollow container having, it must be subjected to a heat treatment operation to impart heat resistance and mechanical strength to the hollow container, complicating the manufacturing process, and also forming such a spout. Injection molds require complex structures and battle precision. Further, the outer lid and the like that are screwed and sealed to the spout portion have a drawback that the manufacturing cost of the container is increased due to various factors such as the necessity of separate molding.

[0005] In view of the above, a hollow container having a double hermetically closed structure having a simple structure and an inner lid for preventing unauthorized opening has been provided at the opening of the container, eliminating the above-mentioned various drawbacks. Housed in a hollow container blow-molded with a resin, such as mayonnaise and ketchup, the opening end of the mouth and neck of the container is heat-sealed with an inner lid made of a sealing material made of a synthetic resin film or other thin sheet material, It is widely known that after sealing by an adhesive means such as an adhesive, an outer lid such as a screw lid is screwed or fitted to the mouth and neck portion to seal in a double structure.

However, the double-sealed hollow container having the above-mentioned structure takes a little time to peel off the inner lid if the adhesive strength of the sealing material is too strong. Also, such a container may be mayonnaise or ketchup. It is suitable for storing viscous contents such as squeezed contents and squeezing the contents, but has a slight viscosity such as shampoo, rinse, liquid detergent or edible oil. Therefore, it is not suitable for accommodating contents that require caution in running out of liquid at the opening during pouring.

[0007] A sealed hollow container made of a thermoplastic synthetic resin having an inner lid made of a seal material which can be easily peeled off and having a structure for preventing tamper-evident sealing is disclosed in JP-A-6-35156. The applicant of the present application has proposed a container as described in Japanese Patent Publication No. This container is shown in FIG.
As shown in FIGS. 8 and 9, a cylindrical inner plug 42 forming a spout is fixed to the mouth and neck 41a of the container body 41,
A spout 43 is formed in the center of the top wall of the stopper, and a sealing material 44 having a knob piece 44a is adhered to the top wall so as to be peelable, and the spout 42 is hermetically sealed. The outer lid 45 is screwed into the mouth-and-neck portion 41a, and the outer lid 45 is sealed in a double structure.

In the above container, the circular base of the sealing material 44 is formed slightly smaller than the top wall portion of the inner plug, and the knob piece 44a projects into the step of the top wall of the inner plug and fits inside the outer lid 45. The sealing material is easily peeled along the breaking line by pulling the knob when opening. However, in order to use this container, the outer lid must be opened by twisting, and for containers that frequently use shampoo or liquid detergent, it is preferable that the lid that closes the opening can be easily opened and closed. It is.

[0009]

SUMMARY OF THE INVENTION In comparison with a conventional container,
A container for storing viscous liquid with a simple structure, preventing unauthorized opening, and having a double lid structure.The lid can be easily opened and closed, and the content liquid can be easily poured out. Provide a hollow container made of a thermoplastic synthetic resin that can be manufactured at a low cost with a container having good drainage at an opening and that uses as little material as possible and is also suitable for the global environment. The purpose is to:

[0010]

A preform formed by molding a thermoplastic synthetic resin into a predetermined shape is blow-molded into a hollow container, whereby the body and the mouth and neck of the hollow container are integrally formed. The body is formed to be thin, and a cutout-shaped spout is formed at the spout at the tip of the mouth and neck, and a film-like sealing piece is adhered to the inside of the spout so as to be peelable and sealed. Further, a cap-shaped outer lid is fitted to the outer periphery of the spout, fixed and hermetically sealed to form a double sealed state, thereby protecting the sealing piece and allowing dust and the like to enter the spout. And a hollow container with a spout that prevents the occurrence of the spout.

In addition, a preform made of a thermoplastic synthetic resin is blow-molded into a hollow container to integrally mold the body and the mouth and neck of the hollow container, and a cutout is formed in a spout at the tip of the mouth and neck. An annular spout is formed, and an annular protruding step surface is formed on the inner surface of the mouth and neck to seal and seal a film-like sealing piece in a releasable manner. An engaging projection and a neck ring are formed on the side surface to engage with the cap-shaped outer lid fitted to the spout to seal and secure the sealing piece with the fitted outer lid. Prevents dust from entering the air.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A thermoplastic synthetic resin is formed into a preform having a predetermined shape by injection molding to form a spout at a spout of a mouth and neck, and a sealing body is formed on an inner surface of the mouth and neck. The preform in which the step to be bonded is formed on the outer surface of the mouth and neck with a projection for locking the cap-shaped protective lid is heated to a temperature suitable for stretch blow molding, and then supplied to the blow molding apparatus. To perform a stretch blow molding operation to form a hollow container.

Then, after a proper amount of the contents is accommodated in the hollow container, a film-like sealing body is peelably adhered to the step on the inner surface of the mouth and neck portion so as to be peelable, and the spout is formed. A cap-shaped protective lid is fitted to the projection and locked to the projection to form a sealed hollow container containing a liquid with good pourability that prevents unauthorized opening.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the sealed hollow container of the present invention will be described.
A description will be given based on a preferred embodiment with reference to the drawings.
As shown in FIG. 1, a polyethylene terephthalate (PET) resin is formed by an injection molding apparatus, comprising a spout 3 forming a mouth-neck portion 2 of a container, a neck ring 4, and a main body portion 5 forming a body portion of the container. At the same time as the preform 1 is molded, a notch-shaped spout 3a is locked at the end of the spout 3 of the preform, and a cap-shaped outer lid is fixed to the outer peripheral surface of the mouth and neck 2. A locking projection 2a is provided on the inner peripheral surface of the mouth and neck 2 with a projection wall 2b for bonding a film-like sealing body.
Is formed into a preform 1 having a predetermined shape.

Subsequently, the preform 1 is transferred and supplied to a stretch blow molding apparatus, and is heated to a temperature suitable for blow molding in a heating process section. And hold it in a blow mold, and then blow compressed air into the preform to
Axial stretch blow molding is performed, if necessary, subjected to a process such as heat setting, cooled, and discharged out of the molding die,
2. A free-standing hollow container 11 in the form of a bottle as shown in FIG.
Is molded.

The hollow container 11 thus formed is
The mouth-and-neck portion 12 is formed to be slightly thick to have strength, and the hollow torso portion 15 is formed to be slightly thin, and can be easily deformed by pressing, and has a self-supporting shape. The spout 13 provided at the tip of the mouth and neck 12 has
As shown in FIG. 4, a spout 13 a having a shape in which a part of the cylindrical wall is cut out is formed, and a sealing piece 16 is peelably adhered to the inner peripheral surface of the mouth and neck 12. The protruding flat portion 12b has an engaging protrusion 12a for locking the outer lid 17 and a neck ring 14 formed on the outer peripheral surface.

Next, when the hollow container 11 is filled with the contents by an appropriate predetermined amount, a sealing piece 16 made of a film or the like is removably adhered to the protruding surface inside the mouth and neck portion 12. After the opening is sealed, the cap-shaped outer lid 17 formed separately by injection molding or the like is placed on the outer periphery of the mouth and neck portion 12 so as to completely cover the spout portion 13a formed at the spout. By sealing the concave groove formed on the inner surface of the outer lid 17 with the locking projection 12a of the mouth and neck by covering the surface, the sealing piece as the inner lid provided in the mouth and neck is provided. At the same time, it is possible to prevent dust and dirt from entering the mouth and neck. As shown in FIG.
If 6a is provided so as to protrude, it becomes very easy to open the package.

In addition, the size of the inner diameter of the mouth and neck is restricted due to the size and design of the container, and as described above, the projecting portion for bonding the peelable sealing piece to the inside of the mouth and neck is used. When it is difficult to provide the flat portion 12b, as shown in FIG. 3, a spout 23 having a large diameter in a stepwise shape near the tip of the mouth and neck portion 22 is formed. The sealing piece 26 is formed so as to be releasably adhered to the flat surface portion 22b formed so as to form a spout having a shape in which a part of a wall surface of the spout 23 is cut off, and is formed on the outer surface of the mouth and neck portion 22. By providing the locking projection 22a for locking the lid 27, the hollow container 21 hermetically sealed by the double lid can be formed.

As described above, the spout provided in the notch at the spout of the mouth and neck is cut into various shapes such as a semicircle, a square, and a trapezoid as shown in FIG. According to conditions such as the shape and size of the container, the viscosity of the liquid contained in the container,
You can choose freely. In general, it is sufficient to provide only one spout at an appropriate portion of the mouth and neck, but if two spouts are provided so as to be symmetrical, the content liquid can be provided. Is particularly convenient when the spout is opened and closed, particularly when the outer lid is rotated to open instead of opening and closing the outer lid when opening and closing the spout.

[0020]

As described above, the invention of the present application is
The sealing structure of the inner lid can be made simpler and easier to peel than the conventional one, and the outer lid can be easily opened and closed, so that when the content liquid is poured out, the drainage is good. Furthermore, it uses less synthetic resin material, is inexpensive, can be easily manufactured, protects the sealing piece as the inner lid, and can prevent dust and the like from entering the spout.

[Brief description of the drawings]

FIG. 1 (a) is a perspective view showing a preform for producing the container of the present invention.

FIG. 1 (b) is a longitudinal sectional view of the preform shown in FIG. 1 (a).

FIG. 2 is a longitudinal sectional view showing the container of the present invention.

FIG. 3 is a longitudinal sectional view showing another example of the container of the present invention.

FIG. 4 is a perspective view showing various shapes of a spout of the container of the present invention, wherein (a) is a semicircle, (b) is a square,
(C) is the perspective view which notched each in trapezoid shape.

FIG. 5 is a longitudinal sectional view showing an example of a conventional sealed container.

6 is a perspective view of the sealed container shown in FIG.

FIG. 7 is a longitudinal sectional view showing a prior art example of the present invention.

8 is a perspective view of the sealed container shown in FIG.

[Explanation of symbols]

 1. Preform 2. Mouth and neck 3. Outlet 3a. Spout 4. Neck ring 5. Container main body 11. Hollow container 12. Mouth and neck of container 12b. Flat part 13. Container spout 13a. 13. spout of container 14. Neck ring of container 15. Body of container Sealing piece 17. Outer lid 22. Mouth and neck of container 22b. Flat part 23. Outlet

Continued on the front page (51) Int.Cl. ⁶ Identification code FI // B29L 22:00

Claims (11)

[Claims] 1. A double-sealable hollow container formed by blow-molding a thermoplastic synthetic resin, wherein a spout is formed at a spout at the tip of the mouth and neck of the container. A surface is formed on the inside of the mouth and neck so that the sealing piece can be peeled off, and an engagement projection for locking an outer lid that fits and seals the spout on the outer peripheral surface of the mouth and neck. A hollow container with a spout characterized by being formed. 2. A surface on which the sealing piece is releasably adhered,
The hollow container with a spout according to claim 1, wherein the hollow container is formed in a planar shape protruding annularly below the bottom of the spout. 3. The hollow container with a spout according to claim 1, wherein the engaging projection is formed to project annularly below the bottom of the spout. 4. The hollow container with a spout according to claim 1, wherein the spout is formed by cutting off a part of a cylindrical wall of the spout. 5. The hollow with a spout according to claim 1, wherein the spout is formed by cutting out a part of a symmetrical portion of a cylindrical wall of the spout. container. 6. The hollow container with a spout according to claim 4, wherein the spout is formed by cutting out a part of a cylindrical wall of a spout in a semicircular shape. 7. The hollow container with a spout according to claim 4, wherein the spout is formed by cutting a part of a cylindrical wall of a spout into a square shape. 8. The hollow container with a spout according to claim 4, wherein the spout is formed by notching a part of a cylindrical wall of a spout in a trapezoidal shape. 9. The hollow container with a spout according to claim 1, wherein a part of a side wall of a cap-shaped outer lid which fits into the mouth and neck of the container and seals the spout. A hollow container with a spout, wherein an opening corresponding to the spout is formed. 10. The hollow container with a spout according to claim 9, wherein the outer lid fitted to the mouth and neck is rotatably locked to an engagement projection of the mouth and neck. . 11. A thermoplastic synthetic resin is injection-molded into a preform having a predetermined shape including a mouth and neck portion forming a spout of a hollow container and a body portion forming a body portion, and said spout is Form a preform with a notch, a protruding surface inside the mouth and neck, and a protrusion on the outer peripheral surface of the mouth and neck, at a temperature suitable for blow molding the preform. When heated, the preform is biaxially stretched and blow-molded by a blow-molding apparatus to form a slightly thicker and stronger neck and neck, followed by a slightly thinner body which can be pressed and deformed. A notch-shaped spout is formed in the spout, and a protruded flat portion to which a sealing piece is releasably adhered is formed on the inner surface of the mouth and neck portion. Engagement projection and neck to lock outer lid on the surface A method of forming a hollow container with a spout, wherein a ring is formed.