JP2001122332A - Container having lid welded for fluid food, and its manufacturing method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a container for which a lid welded to an opening thereof can be unsealed without allowing a fluid food housed therein to stain hands or clothes and especially without allowing the fluid food to spill out, even though being used in a space such as a cabin of a passenger plane flying at a cruising altitude where the air pressure is set at a level lower than the earth- side atmospheric pressure. SOLUTION: The container is constructed of a container main body 1, a fluid food 9 filled in the container main body, a welded lid 5 for hermetically closing the container main body 1 with a film-like lid member 6 covering the opening of the container main body welded 7 along a rim 2 of the opening, and an air layer 8 provided at the inside of the container main body 1, being in the state of negative pressure under the atmospheric pressure at a normal temperature, and the air pressure in the air layer 8 is set so as to become the same as or lower than the air pressure in a cabin of a passenger plane flying at a cruising altitude.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hermetically sealed container with a liquid food-containing welding lid, which is capable of opening a film-like lid welded to an opening without soiling hands and the like with the liquid food inside, and a method for producing the same. More particularly, the present invention relates to a container with a liquid food-containing welding lid capable of preventing the contents from scattering when opened and used in an atmosphere at a pressure lower than the atmospheric pressure on the ground, and a method for producing the same.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG.
Is packed in a resin squeezing container 21 or the like, the opening 22 is covered with a film-like lid member 23, and the edge of the opening is sealed by heat welding 24 or the like, and stored. When used, the film-like lid is used. In some cases, 25 is peeled off to open. This pack of fluid foods is easy and hygienic, so milk, syrup, dressing,
It is often used in foods such as yogurt, especially in liquid form or in which water is easily formed. These are mostly containers 21
An air space 26 is formed between the upper portion and the lid 25, which is welded around the opening and hermetically sealed. In many cases, the liquid food 20 such as milk adheres along the joining line between the lid and the edge of the opening.

[0003]

When the liquid food pack is picked up by pulling a part of the film-like lid 25 away from the container 21, the welded portion is peeled off and easily opened, so that it can be easily opened anywhere. Can be used for However, in such a conventional liquid food pack,
Since the air layer 26 is manufactured under the atmospheric pressure on the ground, the air layer 26 also has the same pressure as the atmospheric pressure on the ground. If the inside of the passenger cabin of the air conditioner is in a reduced pressure state above the air pressure on the ground, the air layer in the pack has a higher air pressure, so that as soon as the lid 25 is slightly peeled off, the joining line between the lid and the edge of the opening is formed. There is a problem that the liquid food 20 adhering along is slightly exposed to the air inside and jumps out vigorously, and it gets caught on clothes, hands and the like, and becomes dirty. In addition, milk-coffee-added foods using vegetable oils as liquid foods can be stored at room temperature.However, depending on the temperature of the storage location, the air layer or the food may expand, and such In such a case, if the lid is opened, there is a problem that the liquid food jumps out even under the atmospheric pressure on the ground and stains hands and the like.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems. It is an object of the present invention to cover a film-like lid welded to an opening with a liquid food inside. Welding with liquid food that can be opened without being soiled and that prevents liquid food inside from jumping out even when used in places where the cruise altitude is lower than the atmospheric pressure, such as in passenger cabin during flight. An object of the present invention is to provide a container with a lid and a method for manufacturing the same.

[0005]

According to a first aspect of the present invention, there is provided a container with a welding lid containing a fluid food according to the present invention. A food, a welding lid for sealing the container body by thermally welding a film-like lid material covering the opening of the container body along an edge of the opening, and a room temperature, large temperature And an air layer that is in a negative pressure state under atmospheric pressure.

According to a second aspect of the present invention, there is provided a container with a welding lid containing a liquid food, wherein the pressure of the air layer is set at a cruising altitude. The air blown from the air layer when the lid of the container is opened in the room is set to a pressure lower than the pressure at which the inside food can be blown out.

According to a third aspect of the present invention, there is provided a method of manufacturing a container with a liquid food containing lid according to claim 1 or 2, wherein the liquid food is provided with a liquid lid. It is characterized in that the opening of the injected container body is covered with a film-like lid material, and the periphery of the opening is heat-sealed and sealed under reduced pressure.

According to a fourth aspect of the present invention, there is provided a method of manufacturing a container with a liquid food containing a welding lid according to the first or second aspect, wherein When the heated liquid food is poured and the inside of the container body is in a high temperature state, the opening is covered with a film-like lid material, and the periphery of the opening is sealed by heat welding.

[0009]

According to the method for producing a container with a welding lid containing a liquid food according to the first aspect and the method for producing a container with a welding lid with a liquid food according to the third and fourth aspects, heat welding is performed along the opening edge of the container body. Even if the welding lid is opened under atmospheric pressure on the ground, the action of sucking outside air into the container main body occurs because the air layer of the container main body is at a negative pressure with respect to the atmospheric pressure. Even if it adheres between the welding lid and the edge of the opening,
The liquid food does not fly out. In this case, the atmospheric pressure is an average atmospheric pressure on the ground side where the container with the welding lid containing the liquid food is manufactured.

According to a second aspect of the present invention, there is provided a container with a liquid food containing a welding lid when the passenger cabin during flight at a cruising altitude is reduced in pressure from the ground pressure. Even when opened in the flight cabin, since the air layer of the container body is at a negative pressure with respect to the air pressure in the cabin, an action of sucking outside air into the container body occurs. Even if it adheres to the edge, the liquid food does not fly out.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a cross-sectional view showing a container with a welding lid containing a liquid food according to the present embodiment, wherein (a) shows a state of storage in an atmospheric pressure atmosphere above the ground, and (b) shows a state of use in a passenger aircraft cabin. Is shown. In the figure, reference numeral 1 denotes a container body formed by squeezing a resin film.
Is provided around. Reference numeral 4 denotes a folded portion that is pinched by a finger when the lid is opened. Reference numeral 5 denotes a welding lid, which seals the container body 1 by thermally welding a film-like lid member 6 covering the opening of the container body 1 along the opening edge 2.

Reference numeral 8 denotes an air layer, which is formed by injecting a liquid food into about 70% of the total volume of the container body 1, and the pressure of which is adjusted during production. In the process of filling the container body 1 with the milk to be added to coffee, that is, the milk-like food 9 composed of liquid vegetable oils and fats as a liquid food, the air layer 8 fills the milk-like food 9 in the decompression chamber and closes the lid. By performing the welding, the air layer is reduced in pressure with respect to the atmospheric pressure on the ground. 33000-35000
Although the cabin of a passenger aircraft that flies about a foot is preloaded, the air pressure in the air layer 8 in this embodiment may be reduced to a level above the ground because the decompression state may be equivalent to the atmospheric pressure around 10,000 to 15000 feet. Atmospheric pressure (approximately 760 mm
Hg). still,
The air layer 8 does not necessarily need to be based on the air pressure in the cabin that has been reduced to the maximum so far. It is air layer 8
This is because even if the air in the air layer 8 comes out of the opening from the opening slightly more than the air pressure in the cabin when the lid is opened, it does not necessarily have the force to blow the food 9 out of the container.

Next, the operation and effect of this embodiment will be described. When the welding lid 5 is opened to put the milk-like food 9 into the coffee served in the cabin having a pressure lower than the atmospheric pressure on the ground, the pressure of the air lid 8 is lower than the pressure in the cabin when the welding lid 5 is opened. At the moment when the end is gripped and opened small, the air in the passenger compartment flows into the air layer 8 side at the opening, so that the milk-like food 9 adhered between the welding lid 5 and the opening edge 2. Does not fly out and can be used without soiling hands and clothing.

Although the embodiment of the present invention has been described above, the specific configuration of the present invention is not limited to this embodiment. For example, the container with a welding lid containing a liquid food has been described as a milk-like food 9 made of a liquid vegetable oil as the liquid food. However, the present invention is not limited to this, and a syrup, a dressing, a yogurt that easily produces moisture, or the like may be used. In addition, the air layer 8 having a pressure lower than the atmospheric pressure is formed by welding a lid in a decompression chamber. Alternatively, a reduced pressure state may be formed by sealing in the overheated state and then cooling. As shown in FIG. 2, a slack portion 11 which is thinner than the peripheral wall 10 of the container body and is easily bent may be provided at the bottom. Irregular depression of the peripheral wall 10 due to the reduced pressure of the air layer 8 can be prevented.

[0015]

As described above, the first aspect of the present invention is as follows.
5. A container with a welding lid containing a liquid food according to claim 3.
In the method for manufacturing a container with a welding lid containing a liquid food according to the above, since the above-mentioned configuration, even if the welding lid thermally welded along the opening edge of the container body is opened under atmospheric pressure on the ground, the container body Since the air layer has a negative pressure with respect to the atmospheric pressure, an action of sucking outside air into the container body occurs, even if the fluid food adheres between the welding lid and the opening edge, The effect is obtained that the liquid food does not fly out and the hands and the like are not stained.

According to the second aspect of the present invention, in the container with a liquid lid containing a liquid food, the liquid food is supplied when the passenger cabin in flight at a cruising altitude is lower than the atmospheric pressure on the ground. Even if the container with the welding lid is opened in the passenger cabin, the air layer of the container body is negative pressure with respect to the cabin air pressure, so that the outside air is sucked into the container body. Even if is adhered between the welding lid and the edge of the opening, an effect is obtained that the liquid food does not fly out and the clothes and hands are not stained.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing a container with a welding lid containing a liquid food product according to an embodiment of the present invention, wherein (a) is a cross-sectional view showing a state of storage on the ground side at atmospheric pressure, and (b) is a cross-sectional view in a passenger aircraft cabin. It is sectional drawing which shows the time of use.

FIG. 2 is a cross-sectional view showing a container with a welding lid containing a liquid food according to another embodiment.

FIG. 3 is a cross-sectional view showing a conventional container with a welding lid containing a liquid food.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Container main body 2 Opening edge of container main body 3 Flange of opening edge 5 Welding lid 6 Film-shaped lid material 7 Heat welding 8 Air layer 9 Milky food (liquid food)

Claims (4)

[Claims] 1. A container body by thermally welding a container body, a flowable food injected into the container body, and a film-like lid covering an opening of the container body along an edge of the opening. A container with a liquid food-containing welding lid, comprising: a welding lid in which the container is sealed; and an air layer provided in the container body and in a negative pressure state at normal temperature and atmospheric pressure on the ground. 2. The container with a liquid lid containing liquid food according to claim 1, wherein the air pressure of the air layer is such that air blown out from the air layer when the lid of the container is opened in a passenger cabin of a passenger aircraft flying at a cruising altitude. A container with a welding lid containing a liquid food, wherein the pressure is set lower than the pressure at which the internal food can be blown out. 3. The method for producing a container with a liquid food-containing welding lid according to claim 1 or 2, wherein the opening of the container main body into which the liquid food is poured is covered with a film-like lid material and the periphery of the opening. A method for producing a container with a welding lid containing a liquid food, wherein the step of heat-sealing and sealing the container is performed under reduced pressure. 4. The method for producing a container with a welding lid containing a liquid food according to claim 1 or 2, wherein the heated liquid food is poured into the container main body and the container is opened when the container main body is in a high temperature state. A method for producing a container with a welding lid containing a fluid food, wherein the portion is covered with a film-like lid material and the periphery of the opening is sealed by heat welding.