JPH0531069B2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to a freezer box, and more specifically, forming a heat ray reflective layer on the inner and outer surfaces of a box made of fine fibrous raw material mainly affects the box material. This invention relates to a refrigerated or frozen box for transporting fresh fish, which is used by penetrating water and freezing it.

[Prior Art] This type of refrigerated or frozen box for transporting fresh fish is conventionally described in, for example, Japanese Utility Model Publication No. 57-57006.

This conventional technology not only ensures the airtightness of the boxes when stacked, but also creates a structure that is less bulky and less prone to collapse or damage. a box body made of expanded polystyrene resin, which is formed with protrusions that fit into the grooves, and a protruding part that prevents the lid from falling, which will be described later, on a part of the inner surface of the side wall;
a lid body made of expanded polystyrene resin that is slightly smaller than the opening dimension of the box body and has a thickness such that the surface side thereof is slightly higher than the top surface of the side wall portion and approximately at the same position as the height of the protrusion when the lid body is latched to the overhang portion; It is composed of.

[Problems to be Solved by the Invention] The above-mentioned conventional technology is characterized by the box body being airtight when stacked as a transportation box, and having a compact form that prevents the contents from collapsing or being damaged, and is suitable for transporting fresh fish. It takes advantage of the water and heat retention properties of the foamed resin that is used as the material, and therefore keeps the fish fresh for a long period of time by cutting off the contact between the ice stored inside the interior and the outside air. It is something that I will try to do.

However, in this conventional method, putting fish and ice together inevitably makes the fish watery, and the space available for storing the fish is reduced by the ice space, and in addition, expensive refrigerated trucks are required for transportation. There was a problem.

In order to eliminate each of the above-mentioned problems, this invention uses fine fiber material as the material forming the box, press-forms it, and provides heat ray reflective layers on the inside and outside surfaces.
By drilling pores in a part of the heat ray reflective layer and impregnating the material with water and freezing it before storing fresh fish, the capacity for holding the fish is increased and watery water is eliminated, eliminating the need for a refrigerated truck for transportation. The purpose is to

[Means for Solving the Problems] The object of the present invention described above is to press-form a box and a lid from a material obtained by kneading glue, water, and finely divided fibers, and to form a box and a lid on the inner and outer surfaces of the box and the lid. This is achieved by forming a heat ray reflective layer, making small holes in the heat ray reflecting layer for impregnating the material with water, allowing water to permeate evenly into the material through the small holes, and then freezing this water.

[Function] The freezing box of the present invention is used as an independent ice chamber by freezing water impregnated into the fine fibers forming the box, and the heat rays are reflected by the heat ray reflecting layers formed inside and outside the box. While maintaining the frozen state, even if the ice thaws over time, the heat ray reflective layer (film) prevents water from leaking into or out of the box.

[Example] Examples will be described with reference to the drawings.

In manufacturing the freezer box of this invention, materials such as pulp sludge that floats on water during the production of waste paper pulp, fine powder of sawdust and plane scraps, fine pieces of waste wood, fine pieces of rotten wood, and bread crumbs are used. For reinforcement, a fine fiber material a such as kraft pulp loosened with a beater, water, and a glue (water-soluble binder) are prepared.

During production, 100 parts water and 5 parts starch paste are added to 100 parts material to make a well-kneaded fiber slurry B.

As shown in FIG.
and a discharge port 13 is opened above the cavity 11,
A pressure feed pipe 15 from a fiber slurry pressure feeder (not shown) is connected to this outlet via a valve 14, and a female mold 1 having a packing 17 on the upper edge 16 and an air blowing port 21 opened in the center are connected. , a male mold 2 with a thick synthetic rubber membrane 22 fixed to most of the outer circumference with a belt 23
Add to press mold consisting of.

In the initial state, as shown in Figure 1, the male mold 2 has risen to the top dead center, and at this time the cavity 1 of the female mold 1
A material 3 such as saran net or cotton cloth is laid on the inner surface of the fiber slurry b to drain only water from the fiber slurry b without clogging the small diameter drainage hole 12, and a male mold is formed as shown in FIG. 2 to the bottom dead center.

Thereafter, as shown in FIG. 3, the valve 24 is opened and the fiber slurry b is simultaneously press-fitted into the gap in the product shape formed between the cavity 11 and the male mold 2 from a plurality of locations.

At this time, water has already naturally drained out of the female mold 1 from the drainage hole 12 through the material 3.

When sufficient fiber slurry b has been filled, the valve 4 is closed as shown in FIG. 4, and air at a pressure of 5 to 10 atmospheres is blown into the air inlet 21 of the male die 2 from an air pump (not shown).

Air from this air inlet 21 enters between the male die 2 and a synthetic rubber membrane 22 of the same type as the male die attached to the outer periphery of most of the male die 2, and the fiber slurry b is passed through this membrane to the material 3 side. That is, it is pressure-fed to the inner surface of the cavity 11 and air-formed.

By this pressure feeding, the water in the fiber slurry b is drained out of the female mold 1 through the material 3 and the drainage holes 12.

After molding, the pressure feeding of air from the air inlet 21 of the male mold 2 is stopped, and on the contrary, as shown in FIG. As shown in FIG. 6, the male mold 2 is raised to the top dead center.

After that, as shown in FIG. 7, the box body 4 with the material 3 attached to the outside is taken out from inside the cavity 11, and
After removing material 3, let it dry.

The box body 4 and the lid 5 are made by the above-mentioned forming method, and the eighth
As shown in FIGS. 1 to 11, a heat ray reflecting layer 6 such as a vapor-deposited film is formed on the entire inner and outer surfaces of the box body 4 and the lid 5.

Instead of forming a metal vapor-deposited film, the heat ray reflective layer (film) 6 may be formed by spraying silver powder and then applying plastic coating thereon.

Both the box body 4 covered with the heat ray reflective layer (film) 6 and the lid 5 have overlapping steps 4 formed on their edges.
1 and 51, the heat ray reflective layer (film) 6 is torn to make small holes 42 and 52 that reach the fine fiber material a.

In FIG. 10, a reinforcing mesh frame 53 is provided approximately at the center of the thickness of the fine fiber material a.

The freezer box of the present invention has the above-described configuration, and an example of its use will be described below.

First, the box body 4 and the lid 5 are submerged in water, and the fine fiber material a is sufficiently impregnated with water through the small holes 41 and 51, and then the fine fiber material a is
A box body 4 and a lid 5 sufficiently soaked with water are placed in a freezing chamber to freeze the water and then used as a fish box.
In this case, the fish and water may be frozen after putting the fish inside.

This puts the fresh fish in the same state as if it were kept in an ice chamber, so it is sufficient for short transportation distances without using a refrigerated truck.

For long transportation distances, even if a refrigerated truck is used, it is not necessary to fully refrigerate the product, so a refrigerating machine with a small refrigerating capacity is sufficient.

By carefully arranging the opening positions of the small holes 41 and 51, there is no risk of water entering the box even if the ice melts, so the fish will not become watery.

[Effects of the Invention] Since the present invention is configured as described above, it produces the effects described below.

In the freezing box of claim 1, the heat rays from external heat radiation do not enter the frozen box due to the heat ray reflecting layer, so the frozen state can be maintained for a long time, and waste materials can be used as materials, so industrial waste can be reduced. We can process and manufacture frozen boxes using this processing fee, which eliminates the need for refrigerated trucks and freezer trucks for transportation, resulting in lower transportation costs. By drying it, it can be used repeatedly as a material, and it can also be reused as a fuel.

In the freezer box according to the second aspect, materials that cause no pollution or have no use can be used as materials, so that resources can be reused.

The refrigerating or freezing box of claim 3 has the effect of increasing the water retention effect in addition to reflecting heat rays, and that it looks good and can be made at low cost.

The freezing box of claim 4 has the effect that a heat ray reflection effect and a water retention effect can be obtained at a lower cost.

[Brief explanation of the drawing]

Each figure shows one embodiment of the present invention, and FIG. 1 is a cross-sectional view of a press mold for forming a box, and FIGS. Fig. 8 is a sectional view of the refrigerated or frozen box with the lid open, Fig. 9 is a sectional view of the same with the lid closed, and Figs. 11 are sectional views showing other embodiments of the refrigerating or freezing box. 4... Box body, 42, 52... Small hole, 5... Lid,
6... Heat ray reflective layer, a... Fine fiber material.

Claims (1)

[Scope of Claims] 1. In a molded box press-molded from a fine fiber material, a heat ray reflective layer 6 is formed on the inner and outer surfaces of the box body 4 and the lid 5 constituting the molded box, and the heat ray reflective layer 6 is Small holes 42 and 52 are made in the fine fiber material a to impregnate water, and the small holes 4
A freezing box characterized in that water that has permeated into the fine fiber material a from No. 2,52 is frozen. 2. The freezer box according to claim 1, wherein the fine fiber material a is pulp sludge, fine powder of sawdust or plane scraps, fine pieces of waste wood, fine pieces of rotten wood, bread crumbs, or the like. 3. The freezer box according to claim 1 or 2, wherein the heat ray reflective layer 6 is a metal vapor-deposited film layer. 4. Claim 1 or 2, wherein the heat ray reflective layer 6 is a plastic coating on a spray layer of silver powder.
Freezer box as described.