JP3051482B2 - Mushroom packaging bag and method of manufacturing mushroom packaging bag - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a method of manufacturing a <br/> the packaging bag of the packaging bag及yoke of mushrooms.

[0002]

2. Description of the Related Art In recent years, artificial cultivation of mushrooms has been actively carried out, and has been widely marketed as a commercial product. Among these mushroom products, mushrooms such as enoki mushrooms and shimeji mushrooms are provided in a bag or the like in a fixed amount. Conventionally, mushroom packaging forms are broadly classified into those using packaging bags and those using trays. A typical mushroom that uses a packaging bag is enoki mushroom, and those that use a tray include shimejimeji and nameko. Packaging forms using packaging bags or trays should be easy to package,
It is determined because the freshness of the wrapped mushroom is effectively maintained, the appearance of the product is good, and the like.

For the purpose of maintaining the freshness of mushrooms, a certain degree of permeability of oxygen and carbon dioxide is required when the mushrooms are sealed and packaged. Many use excellent polyethylene films. In the case of packaging using the above-mentioned tray, the tray portion often uses polystyrene paper or the like, and the opening at the top of the tray uses vinyl chloride stretch or the like. The material used for these trays and the like is selected in consideration of the oxygen permeability and the like when the mushrooms are stored in a sealed state, but it is not sufficient if the permeability of oxygen and the like is simply high. If the permeability of oxygen or the like is too high, aerial hyphae may be generated and become a problem.

[0004] As described above, when packaging mushrooms, quite different packaging forms, such as a packaging bag and a tray, are employed because of the difference in the growth form from the beginning. In the case of mushrooms, such as enoki mushrooms, which grow fruit bodies straight from the culture medium, it is easy to store them in a packaging bag, and even if distributed in that state, the product will not be damaged,
In the case of mushrooms that grow from a culture medium like a sashimi, it is difficult to stably store them in a bag, and because the umbrella is damaged during distribution, it is not suitable for packaging in a packaging bag . In addition, the tray used for packaging such as shimejimoji has a trapezoidal side shape and a squeezed bottom, but in consideration of stabilizing the stock mushroom so that it can be stored in the tray. Is what it is.

[0005]

As described above THE INVENTION It is an object you try to solve], conventional in the packaging of mushrooms, but the packaging bag and tray have been needed use as a main, which was using the out tray, material costs for packaging However, there has been a problem in terms of cost. Comparing the production volume of mushrooms using packaging bags and the production volume of mushrooms using trays, there are more products using packaging bags, but recently the production volume of mushrooms packaged using trays has increased significantly. As a result of this large volume shipment, the problem of packaging costs for these mushrooms has become an important issue. Also, from the viewpoint of resource saving, it is necessary to use resources more efficiently by adopting a simplified packaging form. Then, the present inventor tried to solve the above-mentioned problems,
Research has also been conducted on mushrooms packed using trays such as shimeji mushrooms so as to enable packaging using packaging bags, and the present invention has been achieved. That is, an object of the present invention is to provide a mushroom packaging bag and a suitable method for manufacturing a mushroom packaging bag which can be suitably packaged also for mushrooms conventionally packaged using a tray. Things.

[0006]

The present invention has the following arrangement to achieve the above object. That is, mushroom packaging bag
Thermal history in the polystyrene film as a base film, which to use the film material having a two-layer structure formed by bonding the polyethylene film, the polyethylene film as the inner surface for accommodating the mushrooms, a polyethylene film of the inner surface mutually -Characterized in that it is formed into a bag shape. In addition, the polystyrene
If the surface to which the ethylene film is
Characterized in that that. Also, a method of manufacturing a mushroom packaging bag
A polystyrene film as a base film,
A two-layer long film material formed by bonding a polyethylene film to this was used, and the polyethylene film was folded in two at the center in the width direction with the polyethylene film as the middle side, and the films were overlapped. The film material is heat-welded at predetermined intervals in the longitudinal direction in accordance with the dimensions of the packaging bag, and the heat-welded portion is cut and separated into individual packaging bags. Further, the film material is characterized in that one surface of the polystyrene film is printed and the polyethylene film is adhered to the printed surface via an adhesive. In addition, when the film material is heat-sealed, seal portions serving as both edges of the packaging bag are provided in a direction perpendicular to the longitudinal direction of the film material, and both sides of the bottom portion of the bag follow the seal portion. Are welded obliquely so as to form a cutout obliquely.

[0007]

[Action] packaging bag of mushrooms according to the present invention, der those formed using a film material having a two-layer structure in which bonding the polyethylene film to the base film of polystyrene <br/> fill arm
Ri, to obtain a certain shape retention required for the packaging of mushrooms
Can protect the mushrooms and stored can, housed mushroom freshness retention since permeability of oxygen and carbon dioxide of the film material is good is made effective. Also, since the polyethylene film is excellent in heat welding property, reliable heat welding can be performed by folding the polyethylene film in half with the polyethylene film on the middle side and performing heat welding. Further, heat sealing at the time of packaging is also facilitated. In addition, by providing a printing surface between the polystyrene film and the polyethylene film, without hindering the thermal welding of the film material of the two-layer structure,
Good-looking and hygienic printing can be performed.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below in detail with reference to the accompanying drawings. Figures 1-5 show respective examples of the packaging Sobukuro mushroom according to the present invention. The packaging bag of these examples is formed in a bag shape with an opening at the top in each figure, and the shape of the bag is such that mushrooms that grow like a shimeji mushroom are stably stored in the bag. As a function of the bag, the function of the bag is to have excellent permeability of oxygen or carbon dioxide for keeping freshness of the mushroom, and to have a certain degree of shape retention of the bag.

The embodiment of the packaging bag shown in FIG. 1 is characterized in that it is formed wide and the opening is formed to open wide, and both sides of the bottom are cut off diagonally. Both edges 12 of the bag body 10 are heat sealed, and similarly the edges of the cutouts 14 are welded by heat sealing. In this embodiment, the edge 12 of the main body is sealed in parallel by two narrow heat seal portions 16, 16. The dimensions of the embodiment are about 21 cm in width and height, and the cutout 14 is cut out in a triangular shape with a base of 6 cm and a height of 7 cm. The embodiment shown in FIG. 2 is formed by cutting out both sides of the bottom in the same manner as the embodiment shown in FIG. 1, and is different from the embodiment shown in FIG. 1 in that only one heat seal portion 16 for sealing both edges of the main body 10 is provided. Is different.

In the embodiment shown in FIG. 3, the outer shape of the bag is formed in a rectangular shape, and a folding portion 18 is formed at the bottom of the bag by double folding the film. A broken line indicates a folding position.
In the case of the bag of this embodiment, when the bag is opened, the bottom opens in an oval shape and the bottom area can be increased. The embodiment shown in FIG. 4 is similar to the above-described embodiment in that the folded portion 18 is provided on the bottom, but the bottom is heat-sealed in an arc shape. In the embodiment shown in FIG. 5, the folds 20 are provided on both sides of the bag body, so that the opening area of the bag can be increased, and the folds 20 on both sides support the mushroom from the side. Thus, an operation similar to that of the cutout portion 14 shown in FIG. 1 is performed.

FIG. 6 shows a state in which the shimejimoji is packaged using a packaging bag. When a packaging bag is used, the mushroom is stored by being dropped into the bottom of the bag, and the opening edge is heat-sealed with a predetermined width to be sealed. When storing a mushroom that has grown like a stock like a true shimeji, store the mushroom in a natural form from the bottom side by increasing the opening of the bag and storing it with a margin. be able to. The squeezed bottom of the bag can be stored in the shape of a stock.

In the above embodiment, the shape of the packaging bag was described. However, as described above, the bag used in the packaging of mushrooms has a constant oxygen or carbon dioxide permeability so that the freshness of the stored mushrooms can be maintained. It is necessary to have. Conventional mushroom packaging bags often use polyethylene as a film material, but this is because polyethylene is excellent in oxygen permeability and can be easily heat-sealed at the same time. I have.
However, since polyethylene is very flexible, there is a problem in the shape-retaining property of mushrooms when used in packaging bags for storing mushrooms that grow like a stump like a shimeji. Therefore, in this embodiment, a two-layer film material in which a polyethylene film and a polystyrene film are bonded is used.
Polystyrene is superior to polyethylene in the function of permeability of oxygen and carbon dioxide, and is also excellent in strength, so this is used as a base film,
By using a polyethylene film adhered to the base film, a film material excellent in oxygen and carbon dioxide permeability and excellent in shape retention can be obtained. Although plastically inferior to polystyrene, plastic films such as drawn polypropylene, polyester, non-drawn nylon, polycarbonate, and cellophane can also be used.

Next, a method of manufacturing a packaging bag will be described by taking the packaging bag shown in FIG. 1 as an example. As a film material for manufacturing a packaging bag, a film material having a two-layer structure in which a polyethylene film is adhered to a base film such as polystyrene as described above is used, but when forming the packaging bag, the polyethylene film becomes the inner surface of the bag. To do. This is to make it easy to seal the bag by utilizing the heat sealing property of polyethylene. In an actual method of manufacturing a packaging bag, it is preferable to manufacture the packaging bag by the following method in consideration of printing and displaying a product name or the like on a film. First, a base film (25μ
(thickness of about m) is printed on one side, and a polyethylene film is adhered to this printed surface with an adhesive. FIG. 7 is a cross-sectional view of the film material thus bonded to the two layers. That is, the printed portion 24 is formed on one surface of the base film 22, and the polyethylene film 28 is bonded via the adhesive 26. The film material thus obtained is folded in two at the center in the width direction and overlapped. FIG. 8 shows a state in which the film material 30 is folded in two, 31 is a fold, and 32 is an alignment position. When the film material 30 is folded in two,
Fold it so that the polyethylene film is on the inside.

The film material 30 folded in two as described above is heat-welded at a predetermined position according to the size of the packaging bag. As shown in FIG. 8, after the heat welding is performed, the package is separated one by one by cutting the heat-welded portion. In FIG. 8, line A indicates this cutting line position. In the packaging bag of the embodiment shown in FIG. 1, the cutouts 14 are provided on both sides of the bottom of the bag. Therefore, when the film material 30 is heat-welded, the sealing material is formed obliquely at both edges of the packaging bag. Heat welded to Since the polyethylene film is on the middle side, heat welding of the film material 30 can be easily performed. In this manner, a packaging bag can be manufactured continuously using the long film material. When packaging mushrooms using the obtained packaging bag, since the polyethylene film is on the inner surface, the bag mouth can be easily sealed by heat sealing, and handling of the sealed package is easy. Further, since the film material 30 is formed in a two-layer structure as described above, there is an advantage that the printed portion 24 is in the inner layer of the film, and the printed portion does not come into direct contact with mushrooms, and is sanitary. Further, when the printing unit 24 is provided on the back surface side of the base film 22, there is an advantage that the printing surface becomes smoother and the appearance of the printing becomes better than when printing is performed on the front surface of the film. The method of manufacturing the above-mentioned packaging bag is for the embodiment shown in FIG. 1.
It can be manufactured by a conventional manufacturing method using the film material of the layer.

As described above, according to the mushroom packaging bag of this embodiment, a certain degree of shape retention can be obtained by using a two-layer film material in which a polyethylene film is adhered to a base film. The stored mushrooms can be protected, and the permeability of oxygen and carbon dioxide is excellent, so that the freshness of the mushrooms can be effectively maintained. And the packaging work can be facilitated. Note that as a material used for the film material, a material may be appropriately used in consideration of permeability of oxygen and the like. For example, non-oriented polypropylene or the like can be used instead of the polyethylene film used for the inner surface of the packaging bag. Unstretched polypropylene also has a certain degree of permeability for oxygen and the like, and can be heat-sealed. Further, in the above embodiment, a film material having a two-layer structure of a polyethylene film and a polystyrene film has been described as a preferred embodiment, but the film material is not limited to the two-layer structure. Of course, three or more layers can be used to obtain a predetermined oxygen permeability and obtain a certain degree of strength. Also in the case of three layers, a new function such as excellent water absorption can be provided by setting a layer made of a water absorbing polymer as the intermediate layer. As described above, the present invention has been described variously with reference to the preferred embodiments. However, the present invention is not limited to the above-described embodiments, and it goes without saying that many modifications can be made without departing from the spirit of the invention. is there.

[0016]

According to the mushroom packaging bag of the present invention,
As described above, mushrooms that have been packaged using trays such as shimeji mushrooms can be packaged using packaging bags, so that packaging costs can be reduced and resources can be effectively used. be able to. Further, the mushroom can be easily and stably stored using the packaging bag, and the packaging can be facilitated. In addition, the printing surface is 2
By providing it in the middle of the layered film material, the appearance of printing is good and it can be provided as a sanitary packaging bag. Further, according to the method of the present invention, it is possible to easily obtain a mushroom packaging bag having a certain shape preserving property and the like.

[Brief description of the drawings]

FIG. 1 is a front view of a mushroom packaging bag.

FIG. 2 is a front view of a mushroom packaging bag.

FIG. 3 is a front view of a mushroom packaging bag.

FIG. 4 is a front view of a mushroom packaging bag.

FIG. 5 is a front view of a mushroom packaging bag.

FIG. 6 is an explanatory diagram of a state where mushrooms are stored in a packaging bag.

FIG. 7 is a cross-sectional view illustrating a configuration of a film material.

FIG. 8 is an explanatory view showing a method for manufacturing a packaging bag.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Main body 12 Edge part 14 Notch part 16 Seal part 18 Folding part 20 Folding part 22 Base film 24 Printing part 26 Adhesive 28 Polyethylene film 30 Film material 31 Fold 32 Matching position

Claims (5)

(57) [Claims] 1. A polystyrene film as a base film, which to use the film material having a two-layer structure formed by bonding the polyethylene film, the polyethylene film and the inner surface for accommodating mushrooms, polyethylene of said inner surface <br / A mushroom packaging bag , characterized in that heat-sealed films are formed in a bag shape. 2. The polystyrene of the polystyrene film.
The mushroom packaging bag according to claim 1 , wherein a printing is performed on a surface to which the styrene film is adhered . 3. A long film material having a two-layer structure formed by bonding a polyethylene film to a polystyrene film as a base film, and centering the film material in the width direction with the polyethylene film as the middle side. Folding the film material in two parts and superimposing them, heat-sealing the superposed film materials at predetermined intervals in the longitudinal direction according to the dimensions of the packaging bag, cutting the heat-welded part and separating the individual packaging bags A method for producing a packaging bag for mushrooms. 4. The film material, wherein one surface of the polystyrene film is printed and the polyethylene film is adhered to the printed surface via an adhesive is used. Item 4. The method for producing a mushroom packaging bag according to Item 3 . 5. When the film material is heat-welded, seal portions serving as both edges of the packaging bag are provided in a direction orthogonal to the longitudinal direction of the film material, and the bottom portion of the bag follows the seal portion. The method for producing a mushroom packaging bag according to claim 3 or 4 , wherein both sides of the mushroom are obliquely cut away and heat-welded obliquely so as to form a squeezed shape.