JP3627314B2 - Double container for drinking or seasoning liquid - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a double container suitable for filling drinking or seasoning liquid heated before filling among liquors, miso, drinking oil, noodle soup, fresh dressing and the like.
[0002]
[Prior art]
The applicant previously invented a method for filling drinking or seasoning liquids and a double container for these liquids, and filed as Japanese Patent Application No. 7-38954.
[0003]
[Problems to be solved by the invention]
In this invention, when a cap or cap is applied to a thin-walled inner container blown from a bottomed parison, the temperature of the liquid is 0 ° C. or lower or 35 ° C. or higher. In some cases, the temperature is adjusted to 0 ° C or more and 35 ° C or less by heat exchange, and the filling and mounting of the cap on the thin inner container are performed in a clean room, the liquid is filled, and the thin inner container with the cap mounted is a clean room. The double container used for it is made out of a bottomed parison of polyethylene terephthalate resin, and the minimum thickness of the portion excluding the bottom and shoulders is 0.05 mm. This is a double container in which the thin inner container blow-molded so that the maximum thickness is within 0.5 mm is housed in the outer container made of paper.
[0004]
In this filling method, a thin-walled inner container blown as a bottomed parison material is used, and when the temperature of the liquid to be filled is 0 ° C. or lower, or 35 ° C. or higher, heat exchange is performed and 0 ° C. or higher is obtained. Fill the container after adjusting it to 35 ° C or less, and fill the cap and attach the cap to the thin-walled container in the clean room. Fill the liquid, and the thin-walled container with the cap mounted is made of paper outside the clean room. Although it is housed in an outer container, heat exchange and clean room work complicate the filling process and increase costs, so the present invention does not perform heat exchange, and in the clean room. An object of the present invention is to provide a double container that can be satisfactorily filled without any work, and that is sufficiently reliable for heat exchange after filling.
[0005]
[Means for Solving the Problems]
In order to achieve the above-described object, the present invention uses a polyethylene terephthalate resin bottomed parison 1 as a raw material, the minimum thickness of the portion excluding the bottom 8 and the shoulder 9 is 0.05 mm or more, and the maximum thickness is within 0.5 mm. As shown, the thin-walled inner container 2 that has been biaxially stretched and blow-molded is housed in the outer paper-made container 7, and the outer wall surface 10 of the thin-walled inner container 2 and the inner-wall surface 13 of the outer-paper-made container 7 are in contact. The bottom outer periphery 11 of the thin inner container 2 and the bottom 14 of the outer paper container 7 are in contact with each other, but the bottom central portion 12 of the thin inner container 2 and the bottom 14 of the outer paper container 7 are at least one. A double container separated by 5 mm or more.
[0006]
In the double container according to the present invention, the liquid pouring inlet 5 of the thin inner container 2 and the cap 6 attached thereto are provided at the upper end of the thin inner container 2, and the thin contents are provided from the upper end of the paper outer container. The cap 6 attached to the liquid outlet 5 of the vessel 2 protrudes.
[0007]
The liquid filled in the double container according to the present invention is a liquid, seasoning liquid such as sake, synthetic sake, shochu, miso, noodle soup, etc., which is heat-treated before filling and is at least 35 ° C. Any type of liquid that needs to be cooled after filling is suitable, but other liquids may be used.
[0008]
After the double container according to the present invention is used, it is usually discarded. At this time, the thin inner container and the paper outer container can be easily separated and disposed of in accordance with each.
[0009]
The thin inner container of the double container according to the present invention is made of a polyethylene terephthalate resin bottomed parison, the minimum thickness of the portion excluding the bottom and shoulders is 0.05 mm or more and the maximum thickness is within 0.5 mm It is a thin-walled container that is biaxially stretched and blow-molded as shown above, but it is strong and has a stable strength by itself, and since it is housed in a paper outer container, it bursts during handling. However, it is preferable that the size of one double container is about 2 liters or less.
[0010]
[Operation]
In the double container according to the present invention, a thin inner container formed by biaxial stretching blow molding using a bottomed parison is filled with a liquid at 35 ° C. or more, and this is cooled. Even if the treatment is performed, the reliability is not impaired in terms of strength.
The thin inner container is made of polyethylene terephthalate resin bottomed parison and is biaxially stretch blow molded so that the minimum thickness is 0.05mm or more and the maximum thickness is 0.5mm or less except the bottom and shoulders. Therefore, the thickness of each part of the container is homogenized and the strength is improved, and the outer wall surface of the thin inner container and the inner wall surface of the paper outer container are in contact with each other. The outer periphery of the bottom of the container and the bottom of the outer container made of paper are in contact with each other, but the center of the bottom of the thin inner container and the bottom of the outer container made of paper are separated by at least 1.5 mm or more. Even if it is accidentally dropped, damage to the inner container due to impact when dropped is avoided.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 is a process diagram showing an example of filling a double container according to the present invention, a side view showing an example of implementation of the double container, and FIG. 2 is a longitudinal side view showing the main part of the double container. .
[0012]
1 is a bottomed parison made of, for example, polyethylene terephthalate resin. A liquid filling place such as a sake brewery is supplied from a synthetic resin processing plant for producing this bottomed parison 1, and a biaxial shaft is used during the filling process. A stretch blow molding process is provided, and the supplied bottomed parison 1 may be biaxially stretch blow molded to form a thin-walled inner container 2, or a brewery creates the bottomed parison 1 and other thin-walled inner containers 2. May be.
The thin inner container 2 has a minimum thickness of 0.05 mm or more and a maximum thickness within 0.5 mm except for the bottom 8 and the shoulder 9, and the liquid outlet 5 is provided at the upper end.
[0013]
The thin-walled inner container 2 is subjected to a heat treatment called “fired” like, for example, sake from the filling port 4, and a liquid set to 35 ° C. or more is injected and filled from the liquid outlet 5.
[0014]
In the thin inner container 2 filled with the liquid, the cap 6 is attached to the liquid outlet 5 at the next position.
[0015]
The thin-walled inner container 2 fitted with the cap 6 is cooled at the following position. For this cooling, cold water is jetted from the cold water jet pipe 3 or is cooled, or although not shown, It is applied by any means such as passing.
[0016]
The cooled thin inner container 2 is stored in the paper outer container 7 at the next position.
At this time, the cap 6 of the thin inner container 2 is exposed from the paper outer container 7, and the upper end of the lid of the paper outer container 7 is preferably slightly higher than the upper end of the cap 6.
[0017]
The thin inner container 2 and the outer paper container 7 in the double container are configured as follows. That is, as shown in FIG. 2, the outer wall surface 10 of the thin inner container 2 and the inner wall surface 13 of the paper outer container 7 are in contact with each other. 11 and the bottom 14 of the paper outer container 7 are in contact with each other, but the bottom central portion 12 of the thin inner container 2 and the bottom 14 of the paper outer container 7 are not in contact with each other. 5 mm or more away.
[0018]
The paper outer container 7 of the double container according to the present invention does not need to be waterproof in principle, but when the consumer accommodates it in the refrigerator to cool the liquid, the container absorbs moisture from the surface and softens the container. In consideration of the fact that condensation occurs on the surface of the paper outer container when left out of a cold place and left to stand, it is preferable to provide moisture resistance to the surface.
[0019]
【The invention's effect】
The double container according to the present invention uses a thin-walled container that is biaxially stretched and blown from a bottomed parison, so that the thickness of each part of the container is homogenized and the strength is improved. Even if a liquid of 35 ° C. or higher is filled and a cooling process is performed only with the filled thin inner container, the reliability is not impaired at all in terms of strength.
[0020]
The thin inner container constituting the double container is made of a polyethylene terephthalate resin bottomed parison, and the minimum thickness of the portion excluding the bottom and shoulders is 0.05 mm or more and the maximum thickness is 0.5 mm or less. Despite being extremely thin-walled due to the axial stretch blow molding, the thickness of each part of the container has been homogenized and improved in strength, and the outer wall of the thin-walled inner container The surface and the inner wall surface of the paper outer container are in contact with each other, and the outer periphery of the bottom of the thin inner container and the bottom of the paper outer container are in contact, but the center of the bottom of the thin inner container and the bottom of the paper outer container By disposing at least 1.5 mm or more, even if the double container is accidentally dropped, damage to the inner container due to impact at the time of dropping can be avoided. In addition, since the liquid inlet and cap of the thin inner container are provided with the upper end of the thin inner container, the remaining amount when the contents are poured out becomes zero, and the top of the cap of the thin inner container is also removed. By making the top surface of the lid of the paper outer container higher than the surface, a load resistance against the stacking of the double containers can be obtained.
[0021]
In addition, the double container consists of a thin-walled inner container made of a small amount of resin and a paper-made outer container. It is easy to separate and collect paper, and the paper and polyethylene film or aluminum foil, etc., which are multi-layered like existing containers, increase the cost due to multi-layering, and collect and recycle used paper And incineration, there is no difficulty such as difficult separation of paper and film.
[Brief description of the drawings]
FIG. 1 is a process diagram showing an example of filling a double container according to the present invention, and a side view showing an example of implementation of the double container according to the present invention.
FIG. 2 is a longitudinal side view showing a main part of an example of an embodiment of a double container according to the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Bottomed parison 2 Thin inner container 3 Cold water jet pipe 4 Filling port 5 Liquid pouring inlet 6 Cap 7 Paper outer container 8 The bottom part of the thin inner container 9 The shoulder part of the thin inner container 10 The outer wall surface 11 of the thin inner container Thin content The outer periphery 12 of the bottom of the vessel The center of the bottom 13 of the thin inner container 13 The surface 14 of the inner wall of the outer container 14 The bottom of the outer container

Claims (1)

Using the bottomed parison (1) of polyethylene terephthalate resin as the raw material, the minimum thickness of the portion excluding the bottom (8) and shoulder (9) is 0.05 mm or more and the maximum thickness is within 0.5 mm. The thin inner container (2) biaxially stretched and blow-molded is accommodated in the outer paper container (7), and the outer wall surface (10) of the thin inner container (2) and the outer paper container (7) The inner wall surface (13) is in contact with the bottom outer periphery (11) of the thin inner container (2) and the bottom (14) of the paper outer container (7), but the thin inner container (2 ) And the bottom (14) of the outer paper container (7) are separated from each other by at least 1.5 mm or more.

Images