JPH08119358A - Package for fresh mushroom - Google Patents

Abstract

PURPOSE: To provide a package for a fresh mushroom which has improved automatic packaging performance and in which appearance of an article can be improved when it is displayed and functions for keeping freshness can be enhanced by using a toner in which the curvature of a boundary between a bottom surface and a side surface of an article storing section are specified. CONSTITUTION: A package for fresh mushroom is constituted by using a toner 1 in which the curvature R1 of a boundary between a bottom surface 3 and a side surface 4 of an article storing section is specified to be 5-50R. And a cap of the mushroom is oriented downward so as to be in contact with the curvature R1 of the boundary and a stem thereof is oriented upward, thereby to store the mushroom in a tray 1. And the mushroom is wrapped with a film 2, the oxygen permeability at 23 deg.C and water vapor permeability at 90% RH of which are specified to be 3000-30000cc/m<2> .24hrs.atm and 20-300g/m<2> .atm, respectively, whereby the interior of the cap of mushroom can be seen by orienting the stem thereof upward and the mushroom can be prevented from being injured as far as possible, and a package for fresh mushroom having improved automatic packing performance can be obtained.

Description

Detailed Description of the Invention

[0001]

[Industrial field of application] Used as a special package for distribution and sale of fresh shiitake mushrooms.

[0002]

2. Description of the Related Art Generally, as a small amount packaging form for distributing and selling mushrooms, a tray is stretch-wrapped overwhelmingly and the tray material is hard polyvinyl chloride, expanded polystyrene, expanded polystyrene. Polystyrene paper, etc., and stretch films such as soft polyvinyl chloride and polyethylene film are used. As other forms, some are net-packed with shiitake mushrooms and deaerated with enoki mushrooms. The raw shiitake mushroom of the present invention is placed in a tray for general fresh food as described above, and further stretch-wrapped or shrink-wrapped, or only the raw shiitake mushroom is directly put on a plastic net such as polyethylene. It is put in and sold.

[0003]

In the past, there were many cases where raw shiitake mushrooms were put in a general fresh food tray for sale, but in this case, the umbrella of the fresh shiitake mushrooms is easily damaged, Even when the raw shiitake mushroom is pressed by the film during stretch wrapping, pillow wrapping, or shrink wrapping, the raw shiitake mushroom may be damaged, resulting in a decrease in commercial value and accelerated spoilage. Also, when put in a net such as polyethylene,
It has a drawback that it is easily painful during transportation and mass display and sales, and above all, its freshness is difficult to see. The object of the present invention is to show the inside of the umbrella with the handle up, and the packaging that does not damage the shiitake mushrooms as much as possible, and has good suitability for an automatic packaging machine, and
The purpose is to make final packaging with a tray that has a good-looking form and a material that retains freshness at the time of display.

[0004]

Means for Solving the Problems As a result of intensive studies to solve the above-mentioned problems, the present inventors have completed the present invention by making the following forms as trays for fresh shiitake mushrooms. I arrived. That is, the inside of the umbrella is shown by storing it with the handle on top, and it is a tray packaging that does not damage the shiitake mushrooms as much as possible. It is a tray for fresh shiitake mushrooms characterized by a curvature of the boundary between the bottom and the wall of 5 to 50 R, and has an oxygen permeability of 3000 to 30000 cc / m ^{2 at} 23 ° C in a hermetically sealed state. ·twenty four
The water vapor permeability at 40 ° C and 90% RH at hrs / atm
It shall be hermetically sealed with a film of ^{20 to} 300 g / m ² · atm. Moreover, at least one side of the tray, or a part of the tray is formed higher than the peripheral flange surface, or the center of the square tray flange is formed lower than the corner, and the above-mentioned film is used. Including those packaged. A molded lid may be used in the above-mentioned tray and film sealed packaging.

The present invention will be described in more detail. Raw shiitake mushrooms are agricultural products, and their shapes are not always the same, and they are soft and easily damaged. FIG. 2 is a front view and a perspective view of a raw shiitake mushroom. The harvested raw shiitake mushrooms are sorted and inspected, and those of approximately the same size are shipped as raw shiitake mushrooms. And, as for the subdivided packaging, usually about 4 to 10 pieces are stored in a tray, and further, various films are hermetically packaged. In the present invention, when storing fresh shiitake mushrooms in a tray, with the umbrella portion facing down,
The handle is on top. It was found that such a storage is effective in protecting the umbrella part of the shiitake mushroom from impact or pressure, and the color of the backside of the umbrella part is visually recognized as an index of the freshness of the fresh shiitake mushroom at the store. However, it is big. Therefore, the shape of the tray suitable for such storage was studied. From the average shipping size of raw shiitake mushrooms,
The size of the tray was calculated as follows. The diameter of the shiitake mushroom umbrella is 40 to 70 mmφ and the height H is 50 to 80 mm. The internal dimensions of the tray flange are 2 × 2, 2 × 3, or 2
When arranging such as × 5, 70 to 120 × 70 respectively
~ 120, 70-120 x 100-200, 70-120 x 180-350
It was found that the depth is preferably in the range of 20 to 35 mm regardless of the number of pieces. In the present invention, when arranging shiitake mushrooms on the tray, R ₁ of 5 to 50 is provided at the boundary between the bottom and the side of the tray, and R _{0 of the} shiitake mushroom umbrella is added to this. Therefore, the handle of the shiitake mushroom is slightly inclined toward the center, but this is a packaged product that can be stably transported and looks good even in the final sealed packaging. Also, 2
Even if a partition is provided between the storage of rows, the boundary between the partition and the bottom is provided with the same R of 5 to 50 as described above. The depth of the tray should be shallow with respect to the height of the shiitake mushroom.When checking the freshness of the raw shiitake mushroom, look at the back side of the shiitake mushroom umbrella as described above. Because it looks like a swell, it looks good as a product.
In other words, adding R ₀ to R ₁ means that the shiitake umbrella fits closely to the inner wall of the container, and each shiitake can be placed in a fixed position close to a fixed position. Since the shiitake mushroom does not vibrate or shift on the packaging machine when it is hermetically packaged with a freshness-keeping film or the like, stable packaging work is possible and the product looks good. In addition, since the shiitake mushroom does not easily move in the tray during transportation, it is less likely to be damaged.

The material of the tray which can be used in the present invention includes PP, PS, PE, A-PET, PVC and the like, and those having higher transparency are preferable. This is because the freshness of the shiitake mushroom umbrella can be seen through from the back of the tray.

[0007] Raw shiitake mushrooms are placed on a tray and wrapped with a film. In order to keep the freshness of the shiitake mushrooms long, the packaging with this film is important. As the packaging form, stretch packaging, pillow packaging, shrink packaging, or the like can be used. Fresh shiitake mushrooms, like other mushrooms, show a freshness-retaining effect when they are sealed in a small bag and sealed with a film having appropriate oxygen permeability and water vapor permeability. According to the study by the present inventors, the appropriate oxygen permeability and water vapor permeability are 3000 to 30000 cc / m ² · 24 as oxygen permeability.
The range is hrs-atm, and the water vapor permeability is 40.
By packing with a film in the range of ^{20 to} 300 g / m ² · atm at 90 ° C and 90% RH, the effect of maintaining freshness is exhibited. When the oxygen permeability is 3000 cc / m ² · 24hrs · atm or less, an offensive odor is likely to be generated due to a hypoxic respiratory disorder, and the commercial value thereof is significantly reduced. Also, the oxygen permeability is 30
At 000 cc / m ² · 24 hrs · atm or more, the oxygen concentration in the system does not decrease, the MA effect is difficult to obtain, and the freshness such as the generation of aerial hyphae and browning occurs. Furthermore, it is important to define the water vapor transmission rate as well as the oxygen transmission rate. That is, when the water vapor permeability is 300 g / m ²・ atm or more, loss due to transpiration, drying, and atrophy occur, and conversely, when it is 20 g / m ²・ atm or less, the water accumulated inside the package is moldy. , It became a hotbed of decay, and in all cases the freshness was significantly reduced.

In the tray of the present invention, the flange and rib portions can be changed to protect the product and improve the product. The handle part of the shiitake mushroom protrudes, but the flange of the tray is partially lowered so that the shiitake mushroom is placed. For example, the shape shown in FIG. 4 described in the embodiment in which the heights of the four corners are constant and the heights of the four corners are gradually lowered are also possible within the scope of the present invention. Figure 5
As shown in, it is also possible to provide a raised portion on a part of the flange of the tray and print, print or label the brand name. Further, by adding a ruled line to the flange of the tray, the strength can be increased and the decorative effect can be realized. Providing irregularities on the bottom of the tray to prevent spoilage due to moisture accumulated inside the package is a method that is usually performed in fresh food products and is also effective in the present invention.

The tray has a square shape, a rectangular shape, or an oval shape, and by matching the curvature of the shiitake umbrella and the curvature of the tray storage portion, the dance of the raw shiitake mushroom on the tray is reduced during packaging, and the When wrapped in a film,
It is extremely stable. Further, since the corner of the tray has a sufficient radius, the packaging material is not damaged by the corner of the tray or the like, and has a shape that does not impair the sealing property required for maintaining the freshness of the shiitake mushroom. Furthermore, the tray shape is
Since it is a square, rectangle, or ellipse, it fits easily into a corrugated cardboard and can be transported efficiently. At the time of sale, it has a shape that easily fits in the display shelves at the store, and it can be made into a shape that enhances the willingness to purchase in terms of designability as a tray for fresh shiitake mushrooms. The trays before use are easy to stack and the trays are efficiently supplied and stored.

[0010]

[Function] By placing the shiitake mushrooms on a tray, damage and scratches on the raw shiitake mushrooms are reduced, which reduces the loss of commercial value due to decay and the like. It features stable packaging such as stretch packaging for keeping freshness, stable storage in cardboard, etc., and the ability to show the back side of an umbrella when displayed in stores.

[0011]

【Example】

Example 1: As shown in FIG. 3, the tray has a substantially rectangular shape, and the side surface is configured with a curved surface that fits the shape of the shiitake mushroom as much as possible in order to improve the fit of the shiitake mushroom so as not to damage the shiitake mushroom. The flange is provided with decorative ribs 6 that are not flashy for agricultural products and that make the contents look good. Reinforcing ribs 7 were provided on the bottom. 6 trays (2 x 3) of fresh shiitake mushrooms are stored in the above tray (vacuum molded product made of polyester sheet) with the umbrella part down and the handle up, and are pillow-wrapped with a slightly stretched 25 μm thick polystyrene film. Then, the one packed with cardboard and the one packed horizontally by placing it in a tray for general fresh food as a comparative example are pillowed with the same film as the example, and packed with cardboard,
On the same flight, I made a round trip between Tokyo and Kyushu by truck.
The tray packed according to the present invention showed no damage, but in the comparative example, significant damage was observed in 2 to 4 out of 6 pieces. The following examples describe tray shapes, but in any shape, good results were obtained in tests with the film packaging according to the present invention. Example 2: As shown in FIG. 4, the height of the outer edge of the container is lower than the four corners, and the other parts are lower. Form the tray with shiitake mushrooms when viewed from the front and side. Furthermore, it is possible to provide embossed decorative ruled lines 6 on the container flange so that shiitake mushrooms can be seen. There is a gentle radius from the side of the container to the bottom, so that the shiitake mushroom can be comfortably seated, and the way the flange rises makes it easy to lift the tray by hand. It is also suitable for stacking when storing in containers. Embodiment 3: As shown in FIG. 5, a part of the flange is made higher than its surroundings, and the raised flange part and upright portion 8 are formed.
The wall surface 9 is used as a position for attaching a label showing a product name, a place of origin, etc., or as a portion for directly printing, and the contents can be prevented from being crushed by the stretch film. Example 4: In FIG. 6, the outer shape of the container is an intermediate shape between a rectangular shape and a fan shape. That is, as shown in (A), the outer shape 10 of the container was formed into a substantially rectangular shape, a slightly fan-shaped atmosphere was left in the upper part, and the shape (inside) 11 of the portion into which the contents were inserted was fan-shaped. When the outer shape of the container is also fan-shaped, in the sealed packaging with a film, the direction of the tray is not uniform when it is inserted from the carry-in conveyor, the workability is not good, and the film is cut because of the sharp corner at the bottom of the tray. Although it is not preferable, the tray of this example has good suitability for a packaging machine and no film breakage at the corner of the container. Example 5: FIG. 7 is an example in which a partition S is provided on the tray so that the fresh shiitake mushrooms can be arranged in two rows. FIG. 3B is a sectional view taken along line XX ′ in FIG. By setting the curvature of the boundary between the bottom of the tray and the partition to be 5 to 50R,
It is extremely effective in protecting the umbrella portion, and also protects the handle portion from being pressed by a film or the like. Embodiment 6: As shown in FIG. 8, it is also conceivable to cover the tray 1 with a lid P to protect the live shiitake mushroom from damage due to pressure. Example 7: FIG. 9 is a circular tray, (A) is a perspective view, (B) is a cross-sectional view, and a support S is provided at the center of the tray, and the inner surface curvature of the storage part of the fresh shiitake mushroom is 5 to 50R. Furthermore, the bottom of the shiitake storage part has a radial cage structure, and moisture and the like falls under the cage 21 and is effective in preventing the decay of shiitake mushrooms. Further, the tray shape of this embodiment has a design property because it is a shape simulating a shiitake mushroom, and when used at the time of sale, it attracts the interest of consumers and contributes to an increase in purchasing will. The columns S serve to protect the product against the pressure of the contents by the film and the product pressure in the cardboard during the packaging.

[0012]

EFFECTS OF THE INVENTION It is possible to maintain freshness, to keep the shape intact, to be easily displayed in stores, to be easily stored in a cardboard box during transportation, and to be suitable for packaging (stretch packaging, etc.). Furthermore, by providing a sealed packaging that provides a stable MA (Modified Atmosphere) effect and transpiration suppression effect, a stable freshness-retaining effect is obtained, and the radius of the corner of the tray shape is increased. As a result, there is no tearing of the film, and tight packaging is possible by stretching, shrinking or pillow packaging, the contents are fixed in the packaging, there is no damage due to transportation, etc. It has the effect of providing an excellent package.

[Brief description of drawings]

FIG. 1 is an example of a tray according to the present invention.

FIG. 2 is an explanatory diagram of the form of fresh shiitake mushrooms.

FIG. 3

FIG. 9 is an example of the present invention.

[Explanation of symbols]

1. tray. 2. Exterior film. 3. The bottom of the tray. 4. Side of the tray. 5. Flange for the tray. L. The diameter of the shiitake umbrella. H. Total height of shiitake mushrooms. R ₀ .The curvature of the outer surface of the shiitake umbrella. R ₁ .The curvature of the boundary between the bottom and side of the tray.

Claims (3)

[Claims] 1. A pack of fresh shiitake mushrooms, characterized in that a tray having a curvature of the boundary between the bottom and the wall of the product storage section of 5 to 50R is used. 2. The raw shiitake mushroom umbrella is stored so that the umbrella of the raw shiitake mushroom is on the lower side and the handle portion is on the upper side so that the umbrella of the raw shiitake mushroom is along the curvature of the boundary between the bottom portion and the wall portion of the product storage portion. The raw shiitake mushroom packaging body according to claim 1, wherein a tray is used. 3. The oxygen permeability at 23 ° C. is 3,000 to 30,0.
3. The film according to claim 1, wherein the film is wrapped with a film having a water vapor permeability of 20 to 300 g / m ² · atm at 40 ° C. and 90% RH at 00 cc / m ² · 24 hrs · atm. Fresh shiitake mushroom packaging.