JP2000281092A - Spout - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a spout which is hygienic and excellent in ease of use. SOLUTION: A spout 5 is cylindrical as a whole, and is attached to a bag body 1 by welding the pedestal of its lower portion to the opening of the bag body 1. The spout 5 has a cylindrical tubular body part 8 and its inside is a hollow part. The lower end of the hollow part communicates with the inside of the bag body 1 while passing through the middle of the pedestal used for welding. On the other hand, the upper end of the hollow part is closed. The lower part of the flange 10 of the tubular body part 8 is a thin part 11, which is thinner than a synthetic resin material from which the whole of other parts of the tubular body part 8 is made. To discharge filled stuff in the bag 1 through the spout 5, the upper part of the tubular body part 8 is cut off along the thin part 11 of the lower part of the flange 110. That is, stress is applied to the thin part 11 by pressing the upper part of the tubular part 8 and inclining it, so that the upper part from the portion can easily be cut off. Consequently, at the upper end on the cut-off side of the tubular body part 8, the opening of the hollow part communicating with the inside of the bag body 1 is exposed and from the portion the filled stuff in the bag body 1 can be discharged out.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a spout which is hermetically attached to an opening of a bag made of synthetic resin, and is used for taking in and out beverages, foods, medicines, etc. filled in the bag. About.

[0002]

2. Description of the Related Art The applicant of the present invention has disclosed in
Japanese Patent No. 267849 proposes a packaging container provided with a non-open type spout. This spout is formed such that its base is hermetically attached to the opening formed in the container, and a cylindrical tubular part having a hollow inside is erected at the upper center of the base. . The tubular portion and the base are integrally formed of synthetic resin, and the hollow portion in the tubular portion has an upper end closed and communicates with the inside of the container attached with the lower end penetrating the base. Structure. The cylindrical portion is formed to have a tapered tip, and a cut is formed at an intermediate height position in the vertical direction of the cylindrical portion so as to reduce the thickness of the synthetic resin material constituting the cylindrical portion at that portion. Is done.

[0003] In the spout thus formed, for example, when the filling material to be filled in the container is a soft drink, the tip of the tubular portion of the spout is closed at the time of shipping, so that the beverage inside the spout flows out. It does not have a structure. When the inside beverage flows out, the distal end of the cylindrical portion is folded at a thin cut, whereby a hollow portion is exposed and the inside beverage can be poured out from the opening.

[0004] Furthermore, the opening which is exposed when the tip of the tubular portion is folded is closed by inserting the tapered portion of the tip of the folded tubular portion, thereby preventing the beverage from being poured out of the container. It becomes possible. In this proposal, the front end of the tubular portion to be folded and the base portion of the tubular portion are connected by a string-like synthetic resin material, so that the folded tip portion is always integrally engaged with the container.

[0005]

By the way, the present applicant has recently opened the opening of a thin-walled bag made of a synthetic resin, called a retort pack, with the filling of the beverage filled therein. We are currently developing a spout with a cap at the opening when heat sealing the part. A spout with a cap is disclosed in, for example,
As shown in Japanese Patent Application No. 0-120001, the periphery of the base is heat-sealed to the inner surface of the opening of the bag filled with the filling material. It is a structure in which a cylindrical portion provided with is erected. That is, the cylindrical portion is formed in a hollow shape penetrating in the up-down direction, and the filler inside the bag body is discharged from the spout to the outside by this portion. A female screw portion is screwed on the inner periphery of the cap, while a male screw portion screwed with the female screw portion is screwed on the outer periphery above the cylindrical portion, and the spout is formed by screwing the female screw portion with the male screw portion. Can be closed.

However, according to the spout having a structure in which a spout is provided above and closed by a cap, the bag (retort pack) is housed in a heater called a so-called retort pot, and the filling (filling) inside the bag is carried out. In the process of sterilizing beverages such as juices and liquid foods), a gap may be created between the cap and the cylindrical part that have different thermal expansion states, and the filler may leak to the outside from that part. There is also a risk that bacteria will flow in and contaminate the contents in the bag.

For this reason, the applicant has planned to apply the non-open type spout proposed by the above-mentioned applicant in Japanese Patent Application Laid-Open No. 9-267849 to this kind of retort pack.
Since this spout has a structure in which the tip of the tapered cylindrical portion is folded and the portion is inserted into the exposed opening, it is not easy to use, and there is a problem in hygiene, and a cap can be used. We are planning to develop this type of non-open type spout, that is, a spout that can sterilize the retort pack together with the bag.

[0008] The present invention has been made under the above-mentioned project, and is intended to be used by being welded to a bag such as a retort pack, and to provide a spout which is hygienic and excellent in usability. It is.

[0009]

In order to achieve the above-mentioned object, the present invention is applied to an opening of a bag made of synthetic resin, and the lower peripheral portion is closed by welding when the opening is sealed. A welding base part, which is provided on the bottom side and hermetically sealed to the inner surface of the opening of the bag body and which can be welded to the synthetic resin spout which is hermetically welded to the inner surface of the bag; It is formed integrally with the base and has a cylindrical shape extending upward from the center of the upper surface of the welding base. The interior is a hollow part, and the upper end of the hollow part is closed. A tubular body that penetrates the center and is capable of communicating the hollow portion with the inside of the bag when the peripheral portion of the welding base is welded to the inner surface of the opening of the bag; Is arranged along the circumferential direction at a substantially intermediate height position in the vertical direction of the portion, and constitutes the cylindrical body portion A thin portion in which the thickness of the fat material is thinner in that portion than other portions, and a temporary support portion provided above the thin portion in the cylindrical body portion for temporarily attaching a spout cap; An upper portion of the body portion is cut off at the thin portion, and a spout formed at an upper end portion below the cylinder body on the side to be cut off and temporarily attached to the temporary support portion with an opening communicating with the inside of the bag body. A spout that is closed by a cap and has a main support portion disposed on an outer peripheral portion below a thin portion of the cylindrical body portion in order to permanently attach a spout cap below the cylindrical body portion. .

[0010]

1 to 6 relate to one embodiment of the present invention. The container shown in FIG. 4 is a bag 1 formed of a film sheet made of synthetic resin as a whole, and is formed by welding a laminated film sheet of polyethylene or the like in a bag shape. That is, as shown in FIG. 3, the bag body 1 is formed by laminating two sheet materials 2A and 2B and one bent bottom sheet material 3 and heat-welding the peripheral portion of the superimposed portion to form a bag. Formed. That is, of the superposed portions, the portion to be thermally welded is the hatched portion in FIG. 5, and the entire periphery is welded except for the opening 4 at the upper shoulder.

From the portion of the opening 4 which is not welded,
A liquid filler such as a juice or a soft drink is to be filled in the bag 1 and the opening 4
Is also thermally welded. At this time, the synthetic resin spout 5 according to the present embodiment is attached to the opening 4.

The spout 5 has a cylindrical shape as shown in FIG. 3, and is formed entirely of a synthetic resin material such as polypropylene. The spout 5 includes a welding base 6 at the bottom. The welding base 6 has a flat circular or boat-shaped outer shape, and has a height corresponding to the thermal welding width of the bag 1. The outer peripheral edge is provided with a plurality of ridges 7 in the height direction (see FIG. 5), and the bag 1 filled with the filler from the opening 4 opens the outer peripheral edge of the welding base 6. By heat-welding to the inner surface of the portion 4, it is possible to seal the opening 4 and attach the spout 5 to the opening 4 (see FIG. 4).

At the center of the upper surface of the welding base 6 of the spout 5, an upwardly extending cylindrical body 8 extending integrally with the welding base 6 is provided. As shown in FIG. 6 (A), the cylindrical body 8 is provided with a hollow portion 9 having the same cylindrical shape at the center, and this hollow portion 9 penetrates the lower end side through the center of the welding base 6. In this state, it is communicated with the inside of the bag 1. On the other hand, the upper end of the hollow portion 9 is closed (see FIG. 6A).

A flange portion 10 having a diameter larger than the outer diameter of the cylindrical body 8 is projected from an intermediate height position of the cylindrical body 8 in the vertical direction, and is formed integrally with the cylindrical body 8. This brim part 1
The lower part of 0 is a thin part 11 which is thinner than the thickness of the synthetic resin material constituting the entire other cylindrical body part 8 (FIG. 6).
(A)).

An upper male screw portion 12 is screwed on the outer peripheral portion of the cylindrical body portion 8 above the flange portion 10. In this part,
As shown in FIG. 1 or FIG. 4, the spout cap 13 is temporarily attached. That is, as shown in FIG.
2, a spout cap 13 is screwed into the spout cap 13, and the spout cap 13 is temporarily attached above the cylinder body 8 by screwing the upper male screw 12 and the female screw 14.

Since the upper end of the cylindrical body 8 to which the cap 13 is temporarily attached is closed, the bag 1 to which the spout 5 is attached in this manner is placed in, for example, a retort pot and heat sterilized. In this case, the filler inside the bag 1 is not leaked.

When the internal filling of the bag 1 is to be poured out of the spout 5, the upper part of the cylindrical body 8 is placed at the lower part of the flange 10 as shown in FIG. 1 or FIG. Resection at 11. That is, the cylindrical part 8 presses the upper part with a finger,
By applying the one-sided orientation, stress is applied to the thin portion 11, and it is possible to easily cut off the portion above the portion. As a result,
An opening of a hollow portion 9 communicating with the inside of the bag body 1 is exposed at an upper end portion of the tubular body portion 8 on the side to be cut off, and the filler inside the bag body 1 can be poured out from that portion. Becomes

With the upper part of the cylinder body 8 cut off in this way, the spout cap 13 temporarily attached above is removed. Cap 1 removed
3 is a lower male screw portion 15 and a cap 1 which are also screwed on the outer peripheral portion of the cylindrical body portion 8 below the thin portion 11.
3 is screwed together with a female thread portion 14 formed on the inner peripheral portion of the spout 5 and attached to the cut portion side of the cylindrical body portion 8 of the spout 5. That is, as shown in FIG. 2 or FIG. 4, the cap 13 closes an opening exposed by cutting off the cylinder body 8 with the thin wall section 11, and is permanently attached below the cylinder body 8. It will be. As a result, even when the internal filling of the bag 1 is stored, the cap 13 can be permanently attached to the spout 5 and sealed. In addition, in the state before pouring, the thin portion 11 is not cut off, the sealing property is high, the preservability of the filling material is enhanced, and it is extremely sanitary. Furthermore, even if such a bag 1 is placed in a retort pot as it is and subjected to heat sterilization, there is no fear that the filler leaks.

[0019]

FIG. 7 relates to an embodiment of the present invention and relates to a modification of the spout according to the above embodiment. This spout 5A
Has a fitting concave portion 16 on the inner peripheral portion of the cap 13, an upper fitting convex portion 17 on the upper outer periphery of the collar portion 10 of the cylindrical body portion 8, and a lower fitting convex portion 18 on the lower outer periphery of the collar portion 10. Be prepared for each. The cap 13 is temporarily attached to the upper side of the cylindrical body 8 in a state where the fitting concave portion 16 and the upper fitting convex portion 17 are fitted before the upper side of the cylindrical body portion 8 is cut off. .

Further, after the upper side of the cylinder body 8 is cut off, the fitting recess 16 is permanently attached to the upper side of the cylinder body 8 in a state of being fitted to the lower fitting projection 18. Becomes Other configurations and operations are the same as those of the above embodiment.

Further, instead of the above-described embodiment, a fitting projection is formed on the inner peripheral side of the cap 13 and, correspondingly, an upper fitting recess and a lower fitting recess are formed on the cylinder body side. It may be.

The provisional attachment and the actual attachment of the cap to the cylinder body are not limited to such screw or concave and convex fittings. In short, any method can be used as long as it can be attached in a close contact state. Good.

In the above embodiments and examples, the spout is attached to the opening 4 (the corner of the bag 1 in FIG. 5) where the sheets constituting the bag 1 are not bonded. However, the spout according to the present invention can be attached not only to such a portion but also to, for example, an opening provided in a flat portion of the bag body.

[0024]

As described above, according to the present invention, there is an effect that a spout which is hygienic and excellent in usability can be provided.

[Brief description of the drawings]

FIG. 1 is a side view showing a state in which a distal end of a cylindrical body provided with a spout cap is cut off according to an embodiment of the present invention.

FIG. 2 is a side view showing a state in which a spout cap is attached to a main support portion of the spout.

FIG. 3 is a perspective view showing a state in which a spout is attached to a bag.

FIG. 4 is a perspective view showing a bag body to which a spout is welded.

FIG. 5 is an explanatory view showing a heat-sealed portion of the bag.

FIG. 6 is a sectional view of the spout, in which (A) shows a state before the distal end of the cylindrical body is cut off, and (B) shows a state in which the end is cut off. .

FIG. 7 is a cross-sectional view of a spout according to one embodiment of the present invention before a distal end of a cylindrical body is cut off.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Bag body 2A, 2B sheet material 3 Bottom sheet material 4 Opening 5, 5A Spout 6 Welding stand part 7 Convex ridge 8 Cylindrical material 9 Hollow part 10 Collar part 11 Thin part 12 Upper male screw part 13 Spout cap 14 Female screw part 15 Lower male screw part 16 Fitting concave part 17 Upper fitting convex part 18 Lower fitting convex part

 ──────────────────────────────────────────────────続 き Continued from the front page F term (reference) 3E064 AA01 BA22 BC18 EA30 HN65 HS04 3E067 AA03 AB01 AB26 AB81 AB96 BA12A BB14A BC07A EA06 EB32 EE48 GC02 3E084 AA06 AB01 BA01 CA01 DA01 FA01 FB01 GB01 LA01 LA15 LB02

Claims (4)

[Claims] 1. A synthetic resin bag is attached to an opening of a bag,
In a state where the opening is sealed by welding, the lower peripheral portion is sealed to the inner surface of the opening, and the synthetic resin spout is welded to the inner surface of the opening. A welding base part which is hermetically sealed and weldable, and a cylindrical shape integrally formed with the welding base part and extending above the center of the upper surface of the welding base part. While closing the portion, the lower end of the hollow portion penetrates the center of the welding base, and in a state where the peripheral edge of the welding base is welded to the inner surface of the opening of the bag body, the hollow portion is removed. A cylinder body that can communicate with the inside of the bag body, and is disposed along the circumferential direction at a substantially intermediate height position in the vertical direction of the cylinder body,
A thin portion in which the thickness of the synthetic resin material forming the cylindrical body is thinner in that portion than in the other portion, and a thin portion provided in the cylindrical body above the thin portion to temporarily attach a spout cap. The temporary support portion and the upper portion of the cylinder body are cut off at the thin portion, and the opening formed at the upper end portion below the cylinder body on the side to be cut off and communicated with the inside of the bag body has the temporary support portion. A main support portion disposed at an outer peripheral portion below a thin portion of the cylindrical body portion to close the spout cap below the cylindrical body portion and permanently attach the spout cap below the cylindrical body portion. Spout becomes. 2. A spout cap having a female thread portion on an inner peripheral portion thereof, while a temporary support portion for temporarily attaching the spout cap is provided on an upper outer peripheral portion of a cylindrical body, and a spout cap is provided. An upper female screw portion that can be screwed with the female screw portion of the cap, and a main support portion for further attaching the spout cap are provided on an outer peripheral portion below the thin portion of the cylinder body,
The spout according to claim 1, wherein the spout is a lower male screw portion that can be screwed with the female screw portion of the spout cap. 3. The spout cap is provided with a ridge or a ridge on an inner peripheral portion thereof, while a temporary support portion for temporarily attaching the spout cap is provided on an upper outer peripheral portion of the cylinder body. The spout cap has a concave shape that can be fitted to the convex shape, or a convex shape that can be fitted to the concave shape of the spout cap. Further, the main support portion for permanently attaching the spout cap is a cylindrical body. Is provided on the outer peripheral part below the thin part of the part,
The spout according to claim 1, wherein the spout is a concave strip that can be fitted to the convex strip of the spout cap, or a convex strip that can be fitted to the concave strip of the spout cap. 4. The spout according to claim 1, further comprising a collar portion that projects outward from the cylindrical body at an upper portion of the thin portion.