JP2021079977A - Spout unit for bag-shaped container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an injection / outlet unit of a bag-shaped container capable of ensuring sufficient sealing property without thermal deformation even if heat sterilization treatment by retort boil treatment is performed without impairing excellent gas barrier properties. do. SOLUTION: A spout in which a dispensing cylinder and a flange are integrated, a main body portion which can be fitted to the dispensing cylinder and is below the top surface portion and the top surface portion, and a tamper evidence mechanism portion below the top surface portion. It is a spout unit provided with a plug-type cap, and by separating the tamper evidence mechanism from the cap, the cap can be plugged and fitted to the spout, and after the cap sealing material is peeled off, the inside of the spout cylinder is used. A spout unit for a bag-shaped container that is fitted and sealed by the inner ring of the shrimp. [Selection diagram] Fig. 1

Description

The present invention relates to an inlet / outlet unit of a bag-shaped container composed of a spout and a cap thereof, which is projected from the top of a bag-shaped container used for foods and non-foods.

Bag-shaped containers made of plastic film, aluminum foil, etc. (hereinafter referred to as pouches) have been used for various purposes since ancient times. Conventionally, such a pouch is often configured to form an opening by tearing the end of the bag and to take out the contents through the opening. Recently, however, such pouches have come to be provided with a plastic dispenser called a spout.

In Patent Document 1, the spout is composed of a tubular body having openings at both ends, the inside of the peripheral wall of the tubular body is closed, and a thin-walled fragile line is provided around the closed portion, and a support is provided in the cut portion. Mouth plugs with connected tension rings are commonly used in terms of virgin function and ease of opening. When using, put your finger in the pull ring and pull it upward, tear the thin fragile line around the cut part, cut the cut part from the inside of the peripheral wall, open the spout, and the contents are poured out. .. Further, a composite film in which synthetic resin layers are laminated on both sides of a metal foil is heat-sealed at the lower part of the spout to block oxygen permeation from thin-walled fragile lines and the like.

In addition, if a removable cap is provided at the opening, it is possible to reseal even after the spout with the tension ring is peeled off. Therefore, medical treatment containing food containers, various chemicals, infusions, etc. It can also be used as a container.

However, retort pouch foods and hot foods for general use, nursing care, emergency food, etc., for example, breakfast substitute foods, nursing foods, high-calorie foods for energy consumption such as exercise, nutritional supplements, etc. Since baby foods generally belong to neutral foods, it is indispensable to perform pressure heat sterilization by retort pouch treatment, but there is a big problem in the case of spouts having the above structure.

That is, after filling food from the top, side, bottom, etc. of the pouch, the spout is attached and the pouch is sealed and sealed, but in order to perform the retort boil treatment, it is necessary to put a cap on the spout. At this time, a space is created between the spout body and the cap, and the cap and the spout body expand and contract due to the heat of the retort boil treatment, and the cap is loosened due to deformation, and the contents leak. Problems such as taking out and sucking sterilized water occur.

Japanese Unexamined Patent Publication No. 2001-114324

The present invention has been made by paying attention to the above points, and does not impair the excellent gas barrier property, and even if heat sterilization treatment by retort boil treatment is performed, there is no thermal deformation and sufficient sealing performance is ensured. It is an object of the present invention to provide an outlet unit for a bag-shaped container.

The invention according to claim 1 is a spout in which a spout in which a dispenser tube serving as an inflow / outflow path for a container and a flange attached to a bag-shaped container body are integrated and can be fitted to the dispenser tube. A spout unit including a top surface portion that covers the spout port, a main body portion below the top surface portion, and a plug-type cap consisting of a tamper evidence mechanism portion below the top surface portion.
The spout seals the spout with a cap sealing material, and the cap is connected to the main body portion and the tamper evidence mechanism portion at the lower end via a thin-walled portion that is easily broken, and the inner peripheral surface is formed. It has a tubular wall that forms an undercut shape into which the spout pouring tubes can be fitted concentrically.
The back surface of the top surface of the cap has an inner ring that fits into the spout's spout.
By disconnecting the tamper evidence mechanism, the cap body descends along the spout, so that the cap is capped and fitted to the spout, and after the cap sealing material is peeled off, the inner inside the dispensing cylinder is used. A bag-shaped container spout / outlet unit characterized in that it is fitted by a ring.

Further, in the invention according to claim 2, the spout has a laminated structure in which a gas barrier layer and a sealant layer are provided on one or both sides of the gas barrier layer, and the sealant layer is a polyethylene resin. The gas barrier layer contains one or more resins selected from the group consisting of polypropylene-based resins, polyethylene terephthalates, cycloolefin polymer resins, cyclic olefin copolymer resins, and ethylene-vinyl alcohol copolymers, and the gas barrier layer has an ethylene-vinyl alcohol copolymer weight. The pouring / discharging unit for a bag-shaped container according to claim 1, wherein the bag-shaped container is made of a coalescence.

The invention according to claim 3 is the outlet unit for a bag-shaped container according to claim 1 or 2, wherein the cap sealing material for sealing the outlet of the spout has gas barrier properties and retort resistance.

The invention according to claim 4 is any one of claims 1 to 3, wherein the outer peripheral surface of the dispenser of the spout has an undercut shape in which the outer diameter becomes smaller as it goes downward. It is an injection / outlet unit of the bag-shaped container described in 1.

The invention according to claim 5 has an undercut shape in which the outer diameter of the cap main body and the inner peripheral surface of the tamper evidence mechanism are reduced as they go downward. It is an inlet / outlet unit of the bag-shaped container according to any one of.

In the invention according to claim 6, the flange portion of the spout has a structure in which the outer edge thereof is folded back by 180 degrees, and ribs are provided on the surface of the folded flange. The pouring / discharging unit for the bag-shaped container according to any one of 5.

The invention according to claim 7, wherein the top surface portion of the cap is provided with the inner ring that fits into the dispensing cylinder on the back surface portion of the top surface portion, according to any one of claims 1 to 6. It is a pouring port unit for a bag-shaped container.

The invention according to claim 8 is the invention according to any one of claims 1 to 7, wherein the cap main body portion and the tamper evidence mechanism portion have the thin-walled portion connected by half-cutting or sewing. It is a spout unit for bag-shaped containers.

The invention according to claim 9, wherein the bag-shaped container pouring port unit according to any one of claims 1 to 8 is provided with a convex protrusion for cutting on the outer surface of the tamper evidence mechanism portion. Is.

According to the present invention, it is provided to provide a bag-shaped container pouring unit capable of ensuring sufficient sealing property without thermal deformation even if heat sterilization treatment by retort boil treatment is performed without impairing excellent gas barrier properties. Is possible.

Top view and side sectional view of the state where the spout unit of the present invention is attached to the pouch. A perspective view, a side view and a cross-sectional view of the spout of the spout unit. A perspective view and a side sectional view of the cap of the spout unit. The perspective view explaining the fitting of the spout unit before and after opening.

An embodiment of the present invention will be described below with reference to the drawings.

1 (a) is a top view of the pouring unit of the present invention attached to a pouch, FIG. 1 (b) is a side sectional view thereof, and FIG. 2 (a) is a perspective view of a spout of the spout unit. (B) is a side view thereof, (c) is a sectional view showing the laminated structure, FIG. 3 (a) is a perspective view of the cap of the spout unit, and (b) is a side sectional view thereof, FIG. 4 (b). a) is a perspective view for explaining the fitting of the spout unit before the tamper-evidence mechanism is separated, and (b) is a perspective view for explaining the fitting of the spout unit after the tamper-evidence mechanism is separated. It is a perspective view.

<Outlet unit>
The spout unit 2 of the present invention is attached to the pouch 1, and as an example, a form in which the contents are applied to a pouch containing an oral drug solution will be described.
As shown in FIG. 1, the spout unit 2 of the present invention is attached to the opening 1a of the pouch 1 and used to discharge the contents of the container, and heat is applied to the opening 1a of the pouch 1 by heat sealing. It is composed of a spout 3 to be welded and a cap 10 fitted to the spout 3. The spout 3 and the cap 10 are formed by molding a sheet-shaped multilayer structure by a known molding method such as vacuum forming, injection molding, or extrusion blow molding.

<Spout>
FIG. 2A shows a perspective view of the spout 3, and FIG. 2B shows a side view thereof. As can be seen from FIG. 2B, the spout 3 outlet 4 is provided with a flange portion 8 that is curled toward the outer edge, and the outer peripheral surface 5a of the spout 3 spout cylinder 5 is provided with a flange portion 8 that is curled toward the outer edge. It has a slightly tapered surface and has an undercut shape in which the outer diameter becomes smaller as it goes downward. Before opening, the inner peripheral surface 10b of the tamper evidence mechanism portion 13 at the lower end of the cap 10 also has an undercut shape (see FIG. 3), so that it is in contact with the outer peripheral surface 5a of the spout tube 5 of the spout 3. It is fitted and fixed to the spout 3. Then, after opening, when resealing, the inner peripheral surface 10a of the cap main body 12 comes into contact with the outer peripheral surface 5a of the dispensing cylinder 5 of the spout 3 and is fitted and fixed to the spout 3.

Further, as can be seen from FIGS. 2A and 2B, the dispensing cylinder 5 of the spout 3 and the flange portion 6 attached to the pouch 1 are integrated, and the flange portion 6 is integrated. The outer edge has a structure folded 180 degrees, and ribs 7 are provided on the folded flange surface. The rib 7 is provided to facilitate heat welding by the pouch 1 and the heat seal.

The spout 3 needs to have a gas barrier property and to withstand conditions such as retort treatment or boiling treatment. Specifically, a laminated material such as a barrier layer / sealant layer or a sealant layer / barrier layer / sealant layer can be used. The structure of the laminated material of the present invention is shown in FIG. 2 (c). The sealant layer contains one or more resins selected from the group consisting of polyethylene, polypropylene, polyethylene terephthalate, cycloolefin polymer resin, cyclic olefin copolymer resin, and ethylene-vinyl alcohol copolymer, and the gas barrier layer is ethylene. -A vinyl alcohol copolymer or the like is used. The above-mentioned laminated material may be laminated by a known laminating method such as a coextrusion method or a dry lamination method.

As one aspect of the spout of the present embodiment, the spout 3 heats and softens the sheet-shaped laminated material, then draws air between the sheet and the mold in a vacuum to bring the sheet into close contact with the mold to form a three-dimensional shape. It is molded by the tsukuru molding method (vacuum forming). According to the vacuum forming method, the tubular molded portion and the flange portion of the spout 3 are integrally molded, and then the spout 4 is formed through a cutting process. Further, after the cutting process, the spout tip portion is curled toward the outer edge to form the flange 8. The flange portion 6 of the spout 3 is folded back 180 degrees by post-processing after vacuum forming, and a rib 7 is provided on the surface of the folded flange portion 6 to facilitate heat welding with other members.

Further, before the spout unit 2 is opened, the cap sealing material 9 is sealed at the spout 4 above the spout cylinder 5 of the spout 3. Like the spout 3, the cap sealing material 9 needs to have a gas barrier property and to withstand conditions such as retort treatment or boil treatment. Specifically, a laminated material such as a base material / barrier layer / sealant layer can be used. The base material is a plastic film such as PET or ONy, and the barrier layer is a plastic film such as OPP, PET or ONy coated with a barrier material, or OPP, PET and ONy coated with a thin film barrier material such as Al or silicon oxide. Plastic film, Al foil, etc. are used. As the sealant layer, the same resin as the spout 3 is used.

Further, sealing the spout 3 with the cap sealing material 9 having a gas barrier property not only completely shields the contents from the outside world, but also enables sterilization and long-term storage of the contents. , It is possible to prevent hot water, steam, etc. from entering the contents during boil treatment or retort treatment. Therefore, problems such as leakage of the contents and suction of sterilized water are solved.

The cap sealing material 9 can be sealed to the spout 4 by a known heat sealing method such as bar sealing or ultrasonic sealing. The seal may be sealed after filling when the content is filled from the pouring port 4, or in advance when filling from the bottom or side of the container.

<Cap>
The details of the cap 10 will be described with reference to FIGS. 3 (a) and 3 (b). The cap 10 can be fitted to the pouring cylinder 5 of the spout 3, and has a flat top surface portion 11 that covers the pouring outlet 4 above the pouring cylinder 5, a main body portion 12 below the top surface portion 11, and below the flat top surface portion 11. A stopper-type cap in which a tamper-evidence mechanism portion 13 is integrally molded, and the main body portion 12 and the tamper-evidence mechanism portion 13 at the lower end are connected via a fragile thin-walled portion 14. , The inner peripheral surfaces 10a and 10b of the main body portion 12 and the tamper evidence mechanism portion 13 have a tubular wall forming an undercut shape into which the ejection cylinder 5 of the spout 3 can be concentrically fitted. On the back surface of the top surface portion 11 of the cap 10, an inner ring 16 that fits into the spout 4 of the spout 3 is provided.

<Tamper evidence mechanism>
At the time of opening, the tamper evidence mechanism portion 13 is pulled toward the outside of the pouch by holding the convex protrusion 15 provided on the outer surface of the tamper evidence mechanism portion 13.
Since the thin-walled portion 14 is broken and the cap main body portion 12 descends along the pouring cylinder 5 of the spout 3, it is possible to determine whether or not the product has been illegally opened. Then, when the thin-walled portion 14 is broken, the cap main body portion 12 can be removed from the pouring cylinder 5 of the spout 3. Next, if the cap sealing material 9 is peeled off from the injection port 4 above the injection cylinder 5, the contents in the pouch 1 can be taken out. After opening, when resealing, the outer peripheral surface of the spout tube 5 and the inner peripheral surface 10a of the cap body 12 are undercut and fitted, and the inner ring 16 on the back surface of the top surface 11 and the inner ring 16 Leakage of the contents can be prevented by tightly fitting the inner peripheral surface of the spout 4 above the spout pouring cylinder 5.

As the material for forming the cap 10, one or more resins selected from the group consisting of polyethylene, polypropylene, polyethylene terephthalate, and polystyrene can be used.

<Thin wall>
A thin-walled portion 14 that is easily broken is provided between the outer periphery of the cap main body portion 12 and the upper side of the tamper evidence mechanism portion 13. The thin portion 14 is half-cut or perforated at the time of molding to be locally and linearly formed.

<Undercut shape>
The inner peripheral surfaces of the main body portion 12 and the tamper evidence mechanism portion 13 have a tubular wall forming a concave undercut shape, and the outer peripheral surface of the spout tube 5 of the spout 3 has a convex undercut shape. And these are designed to form a good undercut fit. Before opening, the inner peripheral surface of the tamper evidence mechanism 13 and the outer peripheral surface of the spout tube 5 of the spout 3 are fitted. At this time, a space is created between the top surface portion 11 of the cap main body portion 12 and the spout outlet 4 above the spout injection cylinder 5. After the tamper evidence mechanism portion 13 is separated, the cap sealing material 9 is peeled off and opened, the cap main body portion 12 descends to fill the space, and the inner peripheral surface of the cap main body portion 12 and the spout cylinder 5 The outer peripheral surface of the is fitted.

<Inner ring>
An inner ring 16 is provided on the back surface of the top surface portion 11 of the cap 10, and after the cap 10 is opened, the inner peripheral surface of the cap main body portion 12 and the outer peripheral surface of the spout tube 5 are fitted. After peeling off the cap sealing material 9 sealed to the spout 4, the inner ring 16 on the back surface of the top surface 11 and the inner peripheral surface of the spout 4 above the spout pouring cylinder 5 are further fitted. It is completely sealed.

<Pouch>
An example of the manufacturing method of the pouch 1 with the spout unit 2 of the present invention is shown. The spout 3 and the cap 10 were formed by vacuum forming a multi-layer structure having a sheet-like structure similar to that of the above embodiment, and the lower part of the spout was extended to the periphery to form the spout fringe portion 6. After sealing the spout spout 4 with the cap sealing material 9, the spout 3 and the cap 10 are set by tapping. As a result, the spout 3 and the cap 10 are combined to complete the spout unit 2.

Next, for example, the pouch body 1 is filled with the contents in a state where the bag-shaped pouch body 1 as shown in FIG. 1 has an opening provided with a through-round hole, and then the pouring port unit 2 is filled. In order to attach to the pouch 1, the spout unit 2 is inserted into the through round hole of the pouch 1 from the inside, the spout fringe portion 6 is heat-welded to the inner wall of the pouch, and the spout unit 2 is built in the pouch 1 and has contents. A pouch with a spout unit filled with is manufactured. Then, for example, a packaged product is completed by performing a retort treatment of high-temperature heat sterilization.

As a result of manufacturing the pouch 1 of the present embodiment and performing the above retort treatment, the contents may leak due to the pressure difference between the inside and outside of the pouch 1 with the spout unit 2 during the retort treatment, or the spout 3 and the cap 10 may shrink. It was also confirmed that it was possible to prevent the contents from leaking and the gas barrier property from deteriorating due to insufficient closure of the mouth due to the difference in expansion coefficient.

Therefore, according to the present invention, there is provided an injection / outlet unit for a bag-shaped container, which can sufficiently secure the sealing property without thermal deformation even if heat sterilization treatment by retort boil treatment is performed without impairing the excellent gas barrier property. It is possible to do.

1 ・ ・ ・ Pouch 2 ・ ・ ・ Spout unit 3 ・ ・ ・ Spout 4 ・ ・ ・ Spout spout 5 ・ ・ ・ Spout spouting cylinder 5a ・ ・ ・ Spout spouting cylinder outer peripheral surface 6 ・ ・ ・ Spout fringe part 7 ... Rib 8 ... Fringe part of spout spout 9 ... Cap seal material 10 ... Cap 10a ... Inner peripheral surface of cap body 10b ... Inside cap tamper evidence mechanism Peripheral surface 11 ... Cap top surface 12 ... Cap body 13 ... Cap tamper evidence mechanism 14 ... Thin wall 15 ... Inner ring

Claims (9)

A spout with an integrated spout that serves as an inflow / outflow path for the container and a flange attached to the bag-shaped container body, and a top surface and a top that can be fitted to the dispenser and cover the spout of the dispenser. A spout unit having a main body portion below the surface portion and a plug-type cap composed of a tamper evidence mechanism portion below the surface portion.
The spout seals the spout with a cap sealing material, and the cap is connected to the main body portion and the tamper evidence mechanism portion at the lower end via a thin-walled portion that is easily broken, and the inner peripheral surface is formed. It has a tubular wall that forms an undercut shape into which the spout pouring tubes can be fitted concentrically.
The back surface of the top surface of the cap has an inner ring that fits into the spout's spout.
By disconnecting the tamper evidence mechanism, the cap body descends along the spout, so that the cap is capped and fitted to the spout, and after the cap sealing material is peeled off, the inner inside the dispensing cylinder is used. A bag-shaped container spout unit, characterized in that it is fitted by a ring. The spout has a laminated structure in which a gas barrier layer and a sealant layer are provided on one or both sides of the gas barrier layer, and the sealant layer is a polyethylene resin, a polypropylene resin, a polyethylene terephthalate, or a cycloolefin polymer resin. , A cyclic olefin copolymer resin, and an ethylene-vinyl alcohol copolymer, which comprises one or more resins selected from the group, wherein the gas barrier layer is made of an ethylene-vinyl alcohol copolymer. The pouring / discharging unit for the bag-shaped container according to 1. The spout unit for a bag-shaped container according to claim 1 or 2, wherein the cap sealing material for sealing the spout of the spout has gas barrier properties and retort resistance. The pouring / discharging unit for a bag-shaped container according to any one of claims 1 to 3, wherein the outer peripheral surface of the pouring cylinder of the spout has an undercut shape in which the outer diameter becomes smaller as it goes downward. Note to the bag-shaped container according to any one of claims 1 to 4, wherein the cap main body and the inner peripheral surface of the tamper evidence mechanism have an undercut shape in which the outer diameter becomes smaller as the outer diameter goes downward. Exit unit. The bag-shaped container according to any one of claims 1 to 5, wherein the flange portion of the spout has a structure in which the outer edge thereof is folded 180 degrees, and ribs are provided on the surface of the folded flange. Spout unit. The pouring / exit unit for a bag-shaped container according to any one of claims 1 to 6, wherein the top surface portion of the cap is provided with the inner ring that fits into the pouring cylinder on the back surface portion of the top surface portion. The pouring / discharging unit for a bag-shaped container according to any one of claims 1 to 7, wherein the cap main body portion and the tamper evidence mechanism portion have the thin-walled portion connected by half-cutting or sewing. The pouring / discharging unit for a bag-shaped container according to any one of claims 1 to 8, further comprising a convex protrusion for cutting on the outer surface of the tamper evidence mechanism portion.

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