JPS5911096Y2 - Freshness preservation carrier - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a container for transporting fruits and vegetables such as vegetables and fruits, and other foods that need to be kept fresh for a long period of time without losing their freshness.

In recent years, the production areas and consumption areas of fruits and vegetables and various foods have become increasingly remote, and it takes many days to transport them from the production areas to the consumption areas.

Maintaining the freshness of fruits and vegetables during transportation increases the market value of the fruits and vegetables and is also hygienic, so various improvements have been made to containers for transportation.

The container shown in FIG. 1 is one such conventional example.

That is, although a case is shown in which fruits and vegetables 1 such as apples and pears are stored, a resin tray 2 having a concave portion that approximately accommodates the fruits and vegetables 1 is placed between a cushioning sheet 3, for example, a thick foamed resin sheet. This container is made by storing the stacked items in a cardboard box 4.

However, in the container shown in FIG. 1, the packaging form is breathable, and air flows through the corners of the cardboard box 4 and a portion of the liner.

The explanation has been mixed, but in order to maintain the freshness of fruits and vegetables, it is difficult to generalize, but it is necessary to keep the oxygen concentration at a relatively low concentration of about 5 to 15%, increase the concentration of carbon dioxide gas, or use ethylene gas, etc. It is effective to suppress the generation of gas that promotes the ripening of plants.

From this point of view, efforts have been made in recent years to prevent the deterioration of freshness by allowing agents that absorb oxygen, generate carbon dioxide gas, or adsorb ethylene gas, etc., to coexist with fruits and vegetables.

This drug will be tentatively called a "freshness preserving agent."

The use of this freshness-preserving agent is expected to keep fruits and vegetables fresh, but in ventilated containers like the one shown in Figure 1, any amount of outside air can enter, so it is completely ineffective. .

Therefore, a container as shown in FIG. 2, that is, a laminate consisting of the fruits and vegetables 1, a composite resin tray 2 and a cushioning material sheet 3, as described in the container of FIG. A container was proposed that would be put into a bag 5 and then into a cardboard box 4.

However, the container shown in FIG. 2 presented another problem.

In other words, placing the bags in a laminated state in the plastic bag 5 is extremely difficult to work with and requires a great deal of labor for packaging, making this invention impractical due to the above-mentioned problems. Based on this, we propose a container form that is suitable for preserving freshness and is easy to wrap and package.

FIG. 3 shows the basic form of the freshness-preserving carrier of the present invention.

According to this example, the contents such as fruits and vegetables 1 are stored in a carrier 6 made of a material that is hardly permeable to gases, such as resin.

As shown in the figure, this carrier 6 has a side wall, the height of which is equal to or larger than the size of the fruit or vegetable 1.

When such a carrier 6 is loaded with a freshness-preserving agent 7 and, if necessary, a buffer 8 and stacked, the side walls of each carrier 6 come into contact with each other, or the peripheral edge of the bottom surface and the upper edge of the side wall come into contact. Thus, the lower carrier 6 is sealed by the upper carrier 6'.

In the embodiment shown in FIG. 3, the carriers 6 are stacked in only two stages, but in actual cases, they are usually stacked in three or more stages.

Naturally, the material of the carrier 6 is desirably one that does not allow much gas to pass through.

To put it numerically, the oxygen permeation rate is 30,000cc/
m2-24hrS-atm or less, moisture permeability is 200g/
It is preferable to use a material that is less than m2·24hrs (40°C-90%RH).

Specifically, the materials include various moldable thermoplastic resins and resin-impregnated cardboard.

Freshness preservation agents include ascorbate, zeolite, Ben I
・It is made by adding calcium hydroxide or the like as necessary to a gas absorbing (adsorbing) material mainly containing one or more selected from night and activated carbon.

Since there is no other carrier to cover the top of the carrier at the top, the carrier is covered with a film 12 made of resin such as polyethylene for sealing.

The carrier of the present invention is completed by storing the carriers laminated as described above in the cardboard box 4.

FIG. 4 shows another embodiment of the invention.

In this example, a buffer body 8' is interposed between the stacked carriers 6, 6', and in this way, the adhesion between the carriers 6, 6' is good, and the It has the advantage of being resistant to vibrations, etc.

The cushioning body 8' is made of, for example, a foamed resin or a foam sheet, and since the surface thereof is often uneven, an airtight state may not be maintained even if it comes into contact with the peripheral edge of the carrier.

In such a case, attach a synthetic resin film such as polyethylene to the bottom or both sides of the buffer to flatten the surface of the buffer and make the contact with the carrier airtight. Can be done.

In order to make the lower carrier more completely airtight, it is often effective to devise the shape of the carrier itself.

FIG. 5 is an example of this, and as a contrivance, the side wall of the lowermost carrier 9 is made higher so that all the upper carriers 10 are housed inside the lowermost carrier 9.

In this case as well, the upper carrier still seals the lower carrier.

In the illustrated embodiment, contact between the carriers is ensured.

Next, the example shown in FIG. 6 is to improve the stacking condition of the carriers during transportation, and is to improve the stacking condition of the carriers during transportation.
The upper part of the side wall of the carrier 11 is folded inward from the middle when the carrier 11 is placed in the container.

In this case, since the carrier 11 exerts a stress pushing back against the side wall of the cardboard box 4, stability within the box is good.

The present invention is as described above, and since the stacked upper carrier serves as a lid for the lower carrier, the carrier containing fruits and vegetables is kept in a well-sealed state. The performance of the preservative is effectively demonstrated, making it possible to maintain the freshness of the contents over a long period of time.

Furthermore, the canoa of the present invention is easy to pack, as the carriers containing fruits and vegetables are placed one by one into a cardboard box, and the convenience of use can be said to be a feature of the present invention. It is.

Examples of freshness preservation tests using the carrier of the present invention will be described below, along with comparative examples.

Example Freshness retention test for Chojuro pears Chojuro pears (grade: Excel, standard L) were packaged in the form shown below, and a freshness retention test was conducted.

(A) Packaging form ■ Put the pears in a regular tray made of vinyl chloride sheet, put a cushioning material between the trays, stack them in two tiers, and put a cushioning material on the top of the upper tray. I placed it in a cardboard box and sealed it.

(Conventional example shown in Figure 1) ■ Put pears and a freshness-preserving agent into a regular hollow-shaped tray made of vinyl chloride sheet, put a cushioning material between the trays, stack them in two layers, and place them in the upper tray. A cushioning material was also placed on the top of the tray, the entire bag was wrapped in a 40μ thick polyethylene bag, placed in a cardboard box, the opening of the polyethylene bag was closed with a rubber band, and the cardboard box was sealed.

(Conventional example shown in Figure 2) ■Pears and a freshness-preserving agent are placed in a hollow-shaped carrier made of vinyl chloride sheet and shaped as shown in Figure 6, and a cushioning material is placed on top of the carrier.
This was stacked in two layers, placed in a cardboard box, and the upper part of the upper carrier was covered with a polyethylene film (thickness: 60 μm) that was slightly larger than the area of the opening of the carrier, and the cardboard box was sealed.

(Example shown in Fig. 6) The freshness preserving agents were 10 parts by weight of bentonite, 10 parts by weight of activated carbon, 10 parts by weight of ferrous sulfate heptahydrate, and 5 parts by weight of calcium hydroxide.
10 kg of pears sealed in water-permeable packaging material
6 pieces were used each.

(B) Storage conditions It was left standing in a room-temperature warehouse for 6 days.

(C) Results Evaluation Criteria Green Retention: Evaluation was performed in stages, with the state at the time of packaging being rated 5 and the state completely browning being 1.

Hardness retention: The state at the time of packaging was set as 5, and the state in which the entire body was completely softened was set as 1-, and the evaluation was performed in stages.

Workability: The packaging workability of the currently commonly used packaging form (■) is represented by a circle, and cases where the workability is considerably lower than this are represented by an x.

As described above, it is understood that the carrier of the present invention satisfies both freshness preservation and packaging workability.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram showing an example of a conventional transportation container, and FIG. 2 is an explanatory diagram showing another example of the conventional container. FIG. 3 is an explanatory diagram showing one embodiment of the freshness-preserving carrier of the present invention, and FIGS. 4 to 6 are explanatory diagrams showing other embodiments of the present invention. 1... Fruits and vegetables, 2... Tray, 3...
...Cushioning material sheet, 4...Cardboard box, 5
...Bag, 6...Carrier, 7...
Buffer, 8... Buffer, 9, 10, 11.
...Carrier, 12...Film.

Claims (3)

[Scope of utility model registration request] (1) By stacking carriers made of materials that are difficult to permeate to gases and capable of storing fruits, vegetables, and foodstuffs, the lower carrier is sealed by the upper carrier, and the uppermost carrier is made of plastic film, etc. A freshness-preserving carrier characterized in that the carrier group in a stacked state is stored in a cardboard box. (2) The freshness-preserving carrier according to claim (1), which is characterized in that the lower carriers are stacked with a buffer interposed therebetween. (3) Utility model registration claim No.
Freshness preservation carrier described in section 1)