JPH01182272A - Basket for receiving fishes and shellfishes - Google Patents

Abstract

PURPOSE:To maintain the vital power of fishes and shellfishes for an extended period of time and thus improve the survival rate thereof, by receiving caught or cultivated fishes and shellfishes in a container provided with the function of far-infrared radiation. CONSTITUTION:A container 1 is provided with a layer or film 2 consisting of a substance 2a radiating far-infrared rays at ordinary temperature on at least inner surface thereof, i.e. the inner surfaces of side wall 10 and bottom 11 thereof. In order to enhance the radiation effect of far-infrared ray, the outer surface of the bottom 11 and/or the outer surface of side wall near a rib 13 for setting the container engagement force is coated with a layer or film 2' consisting of the aforesaid substance. The container receives fishes and shellfishes with water supplied therein by pouring through water feed means arranged longitudinally or vertically in an appropriate number of rows. During this time, since the far-infrared rays are radiated from the inner surfaces of the container to the fish and shellfish receiving portions, they effect a direct resonance absorption of the far-infrared rays and, in addition, the water absorbing the same act on them, resulting in the considerable improvement of their survival rate and the control of their quality degradation.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to cages for storing seafood.

[Problems to be solved by conventional technology and inventions] In recent years, as the population has become more concentrated in cities, the gap between the areas where seafood is produced (for example, where it is cultivated and where it is consumed) has become wider. There is a growing desire to enjoy fresh, live seafood.

As a countermeasure for this, various methods of transportation have been devised, such as injecting oxygen into water storage bags containing live seafood, such as eels, and transporting the fish in refrigerated trucks after sealing it. There is. However, in the actual distribution process, the product is farmed for a specified number of days at the production area or arrival area until the required quantity is collected, and then transported to the consumption area using the method described above, where it is also farmed for a certain number of days. Therefore, it is extremely important to optimize the yield, or survival rate, and prevention of quality deterioration not only during transportation but also during farming, from the perspective of producers' profits.

By the way, as a means of storing or cultivating the seafood brought to the shrine by the Shinto priests, it has conventionally been common to use basket-like or zaru-shaped plastic containers with slit-shaped water holes (for unagijun, they are called ``tatezaru''). ) are used.

These plastic containers are usually stacked in multiple tiers with seafood stored in them, and water is continuously poured into the top tier to pass water through the water holes to the bottom tier. It is something that can be taken.

However, such prior art merely accommodates fish and shellfish and supplies the water necessary for survival through the presence of water holes, but does not provide any support for actively maintaining or promoting the vitality of fish and shellfish. They were ineffective, and as a result, their physical strength weakened due to stress caused by environmental changes, which inevitably led to a lower survival rate. In addition, even if the fish did not die, quality deterioration was likely to occur, such as discoloration and hardening of the flesh.

The present invention was developed through research in order to solve the above-mentioned problems.The purpose of the present invention is to have a simple structure, maintain significant vitality, and prevent quality deterioration. The purpose of the present invention is to provide cages for storing seafood.

[Means to solve the problem]

In order to achieve the above object, the present invention provides a plastic container with water holes for housing seafood, which is equipped with far-infrared radiation performance.

One way to provide the above-mentioned far-infrared radiation performance is to apply a layer or film of a material that emits far-infrared rays at room temperature to the surface of the container. It is possible to adopt a method of forming a composite molded body with a substance that

In the present invention, the material that emits far infrared rays at room temperature is preferably ceramic powder or fiber prepared by combining several kinds of metals or metal oxides and firing them, or a mixture thereof.

As a specific method of applying a material that emits far infrared rays to the surface of the former container in a layer or film form, the following embodiments may be mentioned.

■ Applying the substance directly to the surface of a separately molded container. Here, "coating" includes spraying, dipping, coating with a brush or roller, vacuum deposition, thermal spraying, and the like. spraying, dipping,
It is convenient to apply with a brush or roller in the form of a resin-containing paint (liquid, slurry, paste), but
Optionally, an adhesive may be applied to the container to adhere the substance in powder or fiber form.

■A film or layer of the substance is formed in advance by coating or impregnation on a water-permeable flexible base material such as cloth, netting, or porous sheet, and this base material is bonded to a separately formed container body. Install.

(2) Form a coating or layer of the substance on the inner surface of the mold by a coating method, and in this state fill the resin material and mold.

■ Form a film or layer in advance by coating or impregnating the above substance on the water-permeable flexible base material, place this base material in a mold, and make sure that the base material immediately conforms to the mold surface during resin molding. At the same time, it is bonded to the resin surface.

(2) Before the container is completely cured in the mold, the substance is sprayed from an injection nozzle provided in the mold.

In these cases, the thickness of the far infrared ray emitting film or layer is, for example, 5 to 50%, taking into account the durability of the radiation effect and the increase in weight.
It may be set within a range of 100 μm.

In addition, the latter method of compounding into the container itself includes a method of kneading the powder or fiber of the above substance with resin in the form of pellets or beads and molding it by heating and melting it, or a method of kneading the powder or fiber of the above substance with resin in the form of pellets or beads, and molding it by heating and melting it. There is a method of molding using pellets or beads. The molding method in this case is
Injection molding is common, but compression molding may also be used. This composite molding is effective if the far-infrared emitting material is unevenly distributed on the container surface by actively utilizing the difference in specific gravity with the resin. The amount of far-infrared emitting material to be blended with respect to the resin content may be determined by taking into consideration transparency, degree of absorption by the resin, moldability, etc.

[For production]

The container of the present invention stores seafood therein in the same way as conventional containers of this type, and is used by stacking or arranging them in several tiers as appropriate and filling them with water. Since far-infrared rays are emitted from the surface of the container to the seafood storage area, the far-infrared rays are directly resonantly absorbed by the seafood and act on the seafood while being absorbed by the water. As a result, the survival rate is significantly improved and quality deterioration is suppressed.

The reason for this is not necessarily clear, but deep biomolecules in seafood are thermally excited by far-infrared vibrations, which accelerates metabolism, lowers the concentration of lactic acids in the blood, and promotes blood circulation by expanding subcutaneous peripheral circulation. This is an aging phenomenon, as it improves cardiovascular function, reduces stress caused by environmental changes, and stimulates the epidermis, which activates the excretion of waste products from sebaceous glands and the secretion of body fluids. This is thought to have a synergistic effect, such as suppressing dryness of mucous membranes and hardening of the skin, and sterilizing water and skin, reducing bacterial infection from wounds caused by contact with seafood, and reducing stress due to this. It will be done.

The present invention is effective for storing eels, but is not limited thereto, and can be applied to containers for holding various types of fish and shellfish such as carp, abalone, sea urchins, shrimp, crabs, and stinging turtles. In some cases, it can also be used as a container for storing or transporting dead seafood.

(Example〕 Embodiments of the present invention will be described below with reference to the accompanying drawings.

FIGS. 1 and 2 show an embodiment in which the present invention is applied to a colander. Reference numeral 1 denotes a container body, which is made of plastic such as polyethylene by injection molding. This container body 1 has a surrounding wall 10 and a bottom wall 11 for housing eels, and a flange 12 is formed on the top of the surrounding wall, and a flange 12 is formed on the outer periphery of the surrounding wall with a required length for setting the degree of fitting. Ribs 13 are provided, and slit-shaped water holes 14 are formed at predetermined intervals over the entire circumference in the lower region of the surrounding wall. Furthermore, a large number of water holes 1 are provided at least in the boundary area between the bottom wall 11 and the surrounding wall 10.
4' is formed. In some cases, water holes 14'' are also formed in the bottom wall 11.

Although such a container structure is conventionally known, in the present invention, at least the inner surface of the container body 1, that is, the inner surfaces of the surrounding wall 10 and the bottom wall 11, is coated with a material 2a that emits far infrared rays at room temperature, specifically, a metal. Or a layer or film 2 made of ceramic powder mixed with several kinds of metal oxides and fired.
is provided by direct coating or by the method described in ■■■ above.

Metal oxides used include zirconium oxide, iron oxide, cobalt oxide, manganese dioxide, copper oxide, and
,,Sin,Al2O3,Cr,O,,TiO2,
Mullite is optional, and several types are blended. When used in the form of paints, the substances are blended with synthetic adhesive materials such as silicone resins, melamine resins, etc. to impart adhesive properties. It can be of any type, such as solution type or non-solution type.

In this example, the upper container is stacked vertically so that it fits into the lower container and functions as a lid, so in order to enhance the far-infrared irradiation effect,
The outer surface of the bottom wall 11 or the rib 13 for setting the degree of fitting
A layer or film 2' made of the above-mentioned material is also applied to the outer surface of the enclosure near the wall.

FIG. 4 shows another embodiment of the present invention, in which a loosely knitted or woven flexible base material 3 has
By coating or impregnating a substance (powder or fiber) 2a that emits far infrared rays at room temperature, a film or layer 2 having far infrared rays emitting properties is integrally formed, and this flexible base material 3 is It is bonded to the required surface portion of the container body 1 using the method described above.

FIG. 5 shows another embodiment of the present invention. In this embodiment, a substance 2a that emits far infrared rays at room temperature is added and mixed into a plastic material, and the contaminants are heated and melted to form a mold cavity. The container body 1 having the above structure is composite molded by molding, injection molding, compression molding, or the like.

Next, the results of implementing the present invention in specific examples will be shown.

(2) The present invention was applied to a strainer for eel farming.

The container body is injection molded from polyethylene and has an external dimension of 4.
36mmφX 182mm, inner dimension 400mmφX 1
67mm.

The content is 20Q.

A substance that emits far-infrared rays at room temperature is mixed with silicone resin and xylene to form a paste-like paint, which is sprayed with air spray onto the entire inner surface and outer surface of the bottom wall of the container body.
A coating film of 0 μm was formed.

The substance that emits far infrared rays at room temperature is iron oxide 20 parts by weight.
10 parts of cobalt oxide, 60 parts of manganese dioxide, and 10 parts of copper oxide were used. The results of measuring the spectral far-infrared emissivity of this coating film at 500° C. are shown in FIG. Further, the measurement results of hemispherical spectral infrared radiation emittance at 30° C. are shown in FIG. In this case, the center wavelength is 9.56 μm, and the total radiation amount is 4.139
Showing good characteristics of XIOJI +2, even at 5℃, center wavelength 10.42μm, total radiation amount 3.059X
A good result of 10"v·m-2 was shown.

■Into the five standing colanders with the above specifications, store 4 kg of 6-7 eel/kg-sized eels that have been in stock for 3 days from China, for a total of 20 kg each, and stack the containers as shown in Figure 6.
Cover the empty container with a lid and pour water at a temperature of 16℃ from above at 52/m2.
The mixture was poured in and cultivated for 10 days. For comparison, a cultivation experiment was conducted under the same conditions using a container that was not treated with far-infrared emitting substances (conventional container), and the survival rate and quality were examined.

First, the survival rates of the containers of the present invention and conventional containers are shown in Table 1 below. In addition, those whose bodies changed color and were on the verge of death were deemed dead.

Table 1 The results of evaluating the quality of the eel after 10 days of farming are shown in Table 2 below.
Shown in the table.

As is clear from the points shown in Table 2 and above, the containers of the present invention have almost no mortality and no deterioration in quality due to the far-infrared rays being radiated at room temperature. Comprehensive evaluation of the results (survival rate x evaluation) shows that the conventional container is 0.805 x O,60 = 0.48
3. The container of the present invention is 0.99 x 1.0O = 0.99.

It can be seen that the container of the present invention has approximately twice the economic effect.

〔Effect of the invention〕

According to the present invention as described above, it is possible to maintain the vitality of the fish and shellfish for a long period of time by simply storing the fish and shellfish that have been caught or cultivated, and it is possible to significantly improve the survival rate and prevent quality deterioration. Excellent effects can be obtained by being easy and inexpensive to carry out.

[Brief explanation of the drawing]

FIG. 1 is a plan view showing an embodiment of the seafood storage cage according to the present invention, FIG. 2 is a sectional view taken along the line ■-■ in FIG. 1, and FIG. 3 is a partially enlarged view of FIG. 2. FIG. 4 is a partial sectional view showing another embodiment of the present invention, FIG. 4a is a partially enlarged view thereof, and FIG. 5 is a partially cutaway side view showing another embodiment of the present invention.
Fig. 6 is a partially cutaway side view illustrating the usage state, Fig. 6a is a partially enlarged view thereof, Fig. 7 is a spectral infrared emissivity curve diagram of the far infrared emitting material used in the embodiment of the present invention, Fig. The figure is also a hemispherical spectral infrared radiation emittance curve diagram. 1... Container body, 2a... Substance that emits far infrared rays at normal temperature, 2... Film or layer of material that emits far infrared rays at normal temperature.

Claims (5)

[Claims] (1) A plastic container with water holes for storing seafood, characterized in that the container has far-infrared radiation performance. (2) The seafood storage cage according to claim 1, wherein a material that emits far infrared rays at room temperature is applied in a layer or film form on the surface of the container body. (3) The seafood storage cage according to claim 1, wherein the container is formed by composite molding with a substance that emits far infrared rays at room temperature. (4) The seafood storage cage according to any one of claims 1 to 3, wherein the substance that emits far infrared rays at room temperature is ceramic powder or fiber. (5) The fish and shellfish storage cages according to any one of claims 1 to 4, wherein the water-permeable container for holding the fish and shellfish does not stand upright.