JP2001340040A - Carbon dioxide gas absorbing tool for plastic bag type transportation of live fish and method for plastic bag type transportation of live fish - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a carbon dioxide gas absorbing tool for a plastic bag type transportation of live fish capable of surely absorbing a carbon dioxide gas produced in a bag for transportation by respiration of fish and preventing a reduction in activity and death of fish by a rise in a carbon dioxide gas concentration in the plastic bag for transportation and to provide a method for a plastic bag type transportation of live fish. SOLUTION: This carbon dioxide gas absorbing tool for a plastic bag type transportation for live fish comprises a container main body which is formed from a lightweight material impermeable to water and a gas, has an opening part on the top and can float on the surface of the water, a carbon dioxide gas absorbent composed of an alkaline earth metal oxide stored in such an amount as to form an upper part space in the container main body, an air-permeable press part formed in a middle cover state not to move the carbon dioxide gas absorbent to the upper part space side and a sealing member which is arranged so as to cover the opening part of the container main body and is made of a material permeable to gas but impermeable to water under normal pressure. The carbon dioxide gas absorbing tool for a plastic bag type transportation for live fish has a center of gravity at a position to restore the sealing part always locating on the top side by buoyancy even if the tool falls or is overturned on the surface of the water. This method for transportation comprises using the carbon dioxide gas absorbing tool.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a carbon dioxide absorbing device for transporting live fish in a plastic bag, and a method of transporting live fish in a plastic bag using the carbon dioxide absorbing device to prevent the vitality of the live fish from dropping or dying.

[0002]

2. Description of the Related Art A plastic bag-type transport method is one of the methods for transporting live fish for transporting edible natural fish, cultured fish, ornamental fish, and the like alive. This method is a method in which water and live fish are put in a plastic film bag, sealed with a head space, and then transported in a cardboard box or the like, which is used for small-scale and short-time transportation.

[0003] The plastic bag-type transport method is a simple and low-cost method, and is therefore widely used for transporting various cultured fish, natural fish, and ornamental fish. However, the plastic bag-type transport method cannot control the water temperature, dissolved oxygen concentration, and water quality during transport, so that there is a problem that even during transport within 24 hours, the vitality of the transported fish and the death of the fish during transport are likely to occur. Therefore, in the conventional plastic bag type transport method, in order to prevent the vitality and death of fish during transportation, various methods such as lowering the temperature of the water sealed with the fish, enclosing oxygen gas in the head space part, and stopping feed are Ingenuity is given.

[0004] However, even with these means, it is difficult to prevent the vitality of live fish from dropping or death due to an increase in the concentration of carbon dioxide in the plastic bag for transport due to the respiration of fish. In the case of transportation to a distant place that requires 24 hours or more, there is a problem that a large number of fish whose vitality is reduced or die is generated, and the commercial value of the live fish is lost.

[0005] In order to cope with such a problem of the plastic bag-type transport method for live fish, an alkaline earth metal hydroxide is packaged with a plastic gas-permeable material that is impermeable to water at normal pressure. A plastic bag-type transport method for live fish in which a carbon dioxide absorbent is sealed in a plastic bag for transporting live fish and a carbon dioxide absorbent for that purpose have been proposed (Japanese Patent Laid-Open No. 10-286457). The carbon dioxide gas absorbent and the method of transporting live fish in a plastic bag using the carbon dioxide gas absorbent can effectively prevent a decrease in the vitality and death of the fish, and exhibit an excellent effect.

However, when the carbon dioxide absorbent is sealed in the plastic bag for transportation, as a means for securely holding the carbon dioxide absorbent so as to be located in the head space of the plastic bag for transportation. There is no suitable one.For example, the means of attaching a carbon dioxide absorbent to the inner wall surface of the head space of a plastic bag for transportation is not only time-consuming, but even if it is attached, the plastic bag for transportation is placed in a cardboard box or the like. When packed, the position of the head space portion is changed due to the inclination or bending of the transporting plastic bag, and the carbon dioxide absorbent may be immersed in water, and the carbon dioxide absorption may be insufficient.

[0007]

SUMMARY OF THE INVENTION The present invention solves the above-mentioned drawbacks of the simple plastic bag type transportation method and effectively utilizes the advantages of the plastic bag type transportation method using a carbon dioxide gas absorbent. An object of the present invention is to provide a carbon dioxide absorbing device for plastic bag type transport of live fish and a plastic bag type transport method for live fish using the carbon dioxide absorbing device.

[0008]

According to the first aspect of the present invention, there is provided a carbon dioxide absorbing device for transporting live fish in a plastic bag type, which is formed of a lightweight material that does not allow water and gas to pass therethrough, and has an opening at an upper end. A container main body having a floatable surface, a carbon dioxide absorbent comprising an alkaline earth metal hydroxide contained in an amount such that an upper space is formed in the container main body, A gas-permeable pressing member provided in an inner lid shape so as to prevent the carbon dioxide gas absorbent from moving to the upper space side, and a gas that is disposed so as to cover the opening of the container body and does not allow water to pass at normal pressure It is composed of a sealing member made of a permeable material, characterized in that it has a center of gravity at a position where the seal part is always restored to be located on the upper surface side due to buoyancy even if it falls over and overturns in a floating state on the water surface I do.

According to a second aspect of the present invention, the lightweight material that does not allow water and gas to permeate is a plastic material. According to a third aspect of the present invention, the pressing member is formed of a gas permeable material having a lower specific gravity than the carbon dioxide gas absorbent.

According to a fourth aspect of the present invention, the gas permeable material having a lower specific gravity than the carbon dioxide gas absorbent is a sponge-like material. In the fifth aspect,
The container body has a cup shape with a flange portion, and a seal member is attached to the flange portion. According to a sixth aspect of the present invention, the container body has an inverted truncated cone shape or an inverted polygonal pyramid shape with a flange portion.

According to the method for transporting live fish in a plastic bag type of the present invention, the carbon dioxide absorbing device for plastic bag type transport of live fish according to any one of claims 1 to 6 is floated on the water surface in the plastic bag for transport. It is characterized by.

In the method of transporting live fish in a plastic bag type, water, fish, and usually oxygen gas are further charged into a plastic film bag, and a carbon dioxide gas absorbing device is charged and sealed.
The injected carbon dioxide absorbent is contained by the carbon dioxide absorbent on the bottom side of the container body and is held by a holding member so as not to move to the upper space side of the container body, and the center of gravity is always the container body. Since it is located on the bottom side, the upper end opening of the container body always floats on the water surface in a posture facing upward and does not overturn. Also, even if the vehicle falls down or overturns, it is restored to a spilled state. The plastic bag for transportation sealed by charging the carbon dioxide absorber is packed in a cardboard box and transported.

Since the carbon dioxide absorbent in the container body can be ventilated to the head space portion of the plastic bag for transportation via the holding member and the seal member, the carbon dioxide gas stored in the head space portion of the plastic bag for transportation by breathing of fish is provided. Can be prevented, and a decrease in the vitality and death of fish due to an increase in the concentration of carbon dioxide in the plastic bag for transportation can be prevented.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a carbon dioxide absorbing device for transporting live fish in a plastic bag and a method for transporting live fish in a plastic bag using the carbon dioxide absorbing device according to the present invention will be described with reference to FIGS. explain.

FIG. 1 is a cross-sectional view showing an example of a plastic bag type carbon dioxide absorbing device for transporting live fish. The carbon dioxide absorbing device 10 is made of a lightweight material such as a plastic material and a material which does not allow water or gas to pass therethrough. A container body 1 which is formed and has an opening 2 at the upper end and can be floated on the water surface, and an alkaline earth metal hydroxide contained in such an amount that an upper space 3 is formed in the container body 1. Carbon dioxide absorbent such as material 4
A pressing member 5 provided in an inner lid shape so as to prevent the carbon dioxide absorbent 4 from moving to the upper space 3 side; and a cover member 5 arranged to cover the opening 2 of the container body 1. And a sealing member 6 made of a gas-permeable material that does not pass through. The pressing member 5 may be a porous partition wall, but when it is configured as a padding, a material having a lower specific gravity and a higher air permeability than the carbon dioxide gas absorbent 4, for example, a sponge-like material used in the embodiment. And the like are preferred.

The container body 1 is made of a plastic material or the like.
It is formed into a cup shape by injection molding or drawing molding from a lightweight material that does not allow water or gas to permeate, and a flange portion 1a is provided at the opening edge. Due to the presence of the flange portion 1a, the container body 1 floats more stably on the water surface and serves as a sticking portion for the sealing member 6. Here, the phrase "does not allow gas to permeate" does not mean that gas is not completely permeated. For example, the oxygen permeability is 3000 ml / m ² · a.
tm · 24h or less. Further, “cup-shaped” means an inverted truncated cone or an inverted polygonal truncated pyramid, in which the ratio of the diameter of the top to the diameter of the bottom is 1.1 to 1.3 times, and the ratio of the top to the height is The ratio of diameters is 1.10 to 1.85
The ratio is preferably 1.24 to 1.70 times.
However, the bottom surface does not necessarily need to be a flat surface, and may have some swelling. The carbon dioxide absorbent 4 is made of an alkaline earth hydroxide, and calcium hydroxide or magnesium hydroxide is used. Calcium hydroxide or magnesium hydroxide is in the form of powder or granules to secure the absorption rate of carbon dioxide gas.

The carbon dioxide absorbent 4 is filled in the container body 1, and is filled to such an extent that the upper space 3 is formed so as to lower the center of gravity. The upper space is 5 height of the container body.
% Is preferable. This is to allow the container body to stably float on the water surface without overturning. However, in a state where the upper space 3 is formed, the carbon dioxide absorbent 4 moves to the upper space 3 side when the container main body 1 is tilted or capsized, and floats in a state where the carbon dioxide gas absorbent 4 is tilted or capsized. So, this carbon dioxide absorbent 4
The pressing member 5 is arranged so that the member does not move to the upper space 3 side. When the holding member 5 is configured as a padding, it is necessary that the holding member 5 is made of a material having air permeability and a specific gravity smaller than that of the carbon dioxide absorbent 4, and in the embodiment, a material in which a sponge body is formed in a disk shape is used. Using.

After the holding member 5 is inserted as described above, the opening 2 is sealed. The sealing member 6 is made of a gas-permeable material that does not allow water to pass at normal pressure. The material of the sealing member 6 is disclosed in
The gas permeable material made of plastic in the carbon dioxide gas absorbent disclosed in Japanese Patent Application Laid-Open Publication No. H11-15064 can be used as it is.

In the carbon dioxide gas absorbent disclosed in JP-A-10-286457, a plastic gas permeable material is used as a packaging bag, and a Gurley-type gas permeable material is used as the plastic gas permeable material. (JIS P8
117) is 0.1 to 3000 seconds / 100 ml of air, preferably 1 to 1000 seconds / 100 ml of air, and a gas permeable material using a microporous film or a nonwoven fabric that is impermeable to water at normal pressure is used. . The microporous film is a polyolefin film having fine pores of 0.01 to 50 μm, and is manufactured by a method such as stretching of a film containing foreign matter or irradiation of the film with an electron beam. In addition, the nonwoven fabric is obtained by joining long fibers thereof by hot pressing after cross-dispersion of a bundle of polyolefin fibers. As the microporous film or the nonwoven fabric, a material laminated with another film or a material coated with a heat-adhesive melt agent is used as it is or for reinforcing or providing sealing properties. Examples of the plastic gas-permeable material include “NF sheet” (manufactured by Tokuyama), “FP-2” (manufactured by Mitsubishi Chemical), and “NOP”
(Nippon Petrochemical), "Selboa NWO1" (Sekisui Chemical), "Tyvek" (Dupont), "Elves" (Unitika), "Luxer" (Asahi Kasei) and the like.

The sealing member 6 made of the above-mentioned material is attached to the flange 1a of the container body 1 to complete the carbon dioxide absorbing device 10 for transporting live fish in a plastic bag type as shown in FIG.

As a method of transporting live fish in a plastic bag,
As shown in FIG. 2, water W and fish F and usually oxygen gas are further added so that a head space 12 is formed in the plastic film bag 11, and the carbon dioxide gas absorber 10 is charged and sealed 13. In this state, it is packed and transported in a cardboard box or the like. The injected carbon dioxide absorber 10 always floats on the surface of the water, and the container body 1 is kept even if the transport plastic bag is tilted or bent when the box is packed. The opening 2 side (sealing member 6 side) is always upward and does not overturn.

[0022]

According to the carbon dioxide absorbing device for transporting live fish of the present invention in a plastic bag type, water and fish are put in a plastic film bag, and the carbon dioxide absorbing device is charged and sealed.
The supplied carbon dioxide absorbent contains a carbon dioxide absorbent at the bottom side in the container body and is held by a holding member so that the carbon dioxide absorbent does not move to the upper space side of the container body. Is always on the bottom side of the container body, so that the upper end opening of the container body always floats on the water surface in a posture facing upward and does not overturn.

Since the carbon dioxide absorbent in the container body can be ventilated to the head space portion of the plastic bag for transportation through the holding member and the sealing member, it absorbs the carbon dioxide gas generated in the plastic bag for transportation by breathing fish, It is possible to prevent a decrease in the vitality and death of the fish due to an increase in the concentration of carbon dioxide in the plastic bag for transportation.

According to the method for transporting live fish in a plastic bag type of the present invention, it is possible to prevent a decrease in the vitality of the live fish by simply putting water and fish in a plastic film bag and putting in a carbon dioxide gas absorber. When the plastic bag for transportation is inclined or bent and the state of the head space part is changed when packing the plastic bag for transportation, the upper surface side of the carbon dioxide absorber is always transported without the trouble of attaching the agent. It can be made to face upward in the head space portion of the plastic bag for transportation, and the transportation and packing operation can be performed easily and quickly.

[Brief description of the drawings]

FIG. 1 is a sectional view showing an embodiment of a carbon dioxide absorbing device for transporting live fish in a plastic bag type according to the present invention.

FIG. 2 is a cross-sectional view of a main part schematically showing a state in which a carbon dioxide absorbing device is put into a plastic bag for transportation, showing an embodiment of a plastic bag-type transportation method for live fish according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Container main body 1a Flange part 2 Opening part 3 Upper space 4 Carbon dioxide absorbent 5 Pressing member 6 Seal member 10 Carbon dioxide absorber 11 Plastic film bag 12 Headspace part 13 Sealing W Water F Fish

 ────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Hirokazu Tanaka 3-6-1 Kanda Surugadai, Chiyoda-ku, Tokyo Ageless Service Center Co., Ltd. F-term (reference) 2B104 CA09 CB35 CB42 EF03

Claims (7)

[Claims] 1. A container body formed of a lightweight material that does not allow water and gas to permeate, having an opening at an upper end and capable of floating on a water surface, and a container body having an upper space formed in the container body. A carbon dioxide absorbent made of an alkaline earth metal hydroxide contained in an amount, and a breathable holding member provided in a middle lid shape so that the carbon dioxide absorbent does not move to the upper space side, A sealing member made of a gas-permeable material that is arranged to cover the opening of the container body and does not allow water to pass at normal pressure, and falls over in a floating state on the water surface,
A carbon bag absorber for transporting live fish in a plastic bag, characterized in that it has a center of gravity at a position where the seal portion is always restored to the upper surface side due to buoyancy even when capsized. 2. The carbon dioxide absorbing device for transporting live fish in a plastic bag type according to claim 1, wherein the lightweight material that does not allow water and gas to pass therethrough is a plastic material. 3. The carbon dioxide absorbing device according to claim 1, wherein the holding member is formed of a gas-permeable material having a lower specific gravity than the carbon dioxide absorbent. 4. The carbon dioxide absorbent for transporting live fish in a plastic bag type according to claim 3, wherein the gas permeable material having a lower specific gravity than the carbon dioxide gas absorbent is a sponge-like material. 5. The carbon dioxide absorbing device for transporting live fish in a plastic bag type according to claim 1, wherein the container body has a cup shape with a flange portion, and a seal member is attached to the flange portion. 6. The container body with a flange portion, wherein the ratio of the diameter of the upper portion to the diameter of the bottom portion is 1.1 to 1.3 times, and the ratio of the upper diameter to the height is 1.10 to 1. The carbon dioxide absorbing device for transporting live fish in a plastic bag type according to claim 5, wherein the device is in the shape of an inverted truncated cone or an inverted truncated pyramid, which is 85 times. . 7. A plastic bag type transport of live fish, wherein the carbon dioxide absorbing device for plastic bag type transport of live fish according to any one of claims 1 to 6 is floated on the water surface in the plastic bag for transport. Method.