JPS6345179Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a container for cultivating mushroom fungi such as enokidake, nameko, shimejimaitake, oyster mushroom, and tamogidake, or a container for transporting mushroom inoculum.

Traditionally, a mushroom culture medium such as sawdust or rice bran is placed in a polypropylene bottle or bag to sterilize it, and after the mushroom fungi are seeded, the air required by the mushroom fungi is supplied to prevent bacteria from entering. They were cultured or transported by sealing the opening of bottles or bags with cotton. However, the seal of this opening is
This is done by compressing cotton, and if the cotton is compressed too strongly, air circulation will not be sufficient, and if the cotton is not compressed too much, bacteria may enter. The sealing process was time-consuming and required skill.

In order to solve these drawbacks, the present inventor conducted intensive research and provided a mushroom culture bag in which a porous plastic film was provided in a portion of the plastic film bag in Japanese Patent Application Laid-Open No. 162915/1983. Although this mushroom culture bag is popular and widely used, it has the drawback of being somewhat expensive.

The present invention solves the shortcomings of the conventional technology and provides a more reliable and cheaper mushroom culture container, which uses a transparent film formed from a part of a thermoplastic synthetic fiber nonwoven fabric by heat pressing. This relates to a container for cultivating mushroom fungi or a container for transporting mushroom seeds.

The present invention searched for a material that does not substantially allow germs to pass through, but only allows a moderate amount of air to pass through, and found that a nonwoven fabric with an appropriate basis weight is preferable as a culture material for mushroom fungi. However, it has been found that if the nonwoven fabric is used as a culture material as it is, it cannot be used in practice because the nonwoven fabric is opaque and the growth of mushroom fungi on the culture medium cannot be seen from the outside. The reason for this is that by observing the spread of mycelia from the outside, it is generally possible to check whether there is contamination with bacteria or other germs and to determine the time required to move from culture to cultivation process.

The inventor considered a method such as removing a part of the nonwoven fabric and installing a transparent plastic film in the removed part, but this would not only complicate the process and increase costs, but also require the joining of different materials. There were problems such as a decrease in strength. After further investigation, the inventor of the present invention discovered that a portion of a nonwoven fabric made of thermoplastic synthetic fibers such as polyethylene or polypropylene could be made into a transparent film by heat-pressing the fabric using a heating plate. This is a container used for transporting mushroom inoculum or culturing mushroom fungi.

The nonwoven fabric used in this invention is polyethylene,
Made of thermoplastic synthetic resin fibers such as polypropylene, vinyl chloride ^, and polyester, particularly preferably olefinic synthetic resin fibers such as polyethylene and polypropylene that easily melt at relatively low temperatures. 0.10 to 0.25 mm) is used. The reason for this is that if the basis weight is too small, it is difficult to prevent contamination from passing through, such as bacteria and airborne mold.If the basis weight is too large, it is not only uneconomical, but also has poor box-manufacturing properties, and This is because it becomes difficult to make the nonwoven fabric transparent by pressing.

In addition, nonwoven fabrics whose fibers are bonded together using adhesives cannot achieve high transparency by heat pressing, but those whose fibers are bonded together using heat and pressure can achieve better transparency. It is preferable because it can be obtained.

In addition, there is a method to make a part of nonwoven fabric transparent.
This can be accomplished by pressing a hot roll or bar heated to the melting temperature of the nonwoven fibrous material onto the surface of the nonwoven. If a thin film of Teflon or silicone rubber is interposed between a hot roll or a hot bar and heat pressed, not only will the transparency of the molten part increase;
This is preferred because the molten fiber material does not stick to the hot roll or hot bar.

The shape of the transparent film portion to be formed is not particularly limited, such as a halftone dot shape, a round shape, a triangle shape, etc., but one or more lines or strips with a width of 2 to 20 mm are preferably divided into several lines on one side. It is preferable to provide it in the form of vertical lines or diagonal lines. The reason for this is that the nonwoven fabric itself is weak, so the resulting mushroom culture container tends to lack erecting stability, but the part that is made into a transparent film by heat pressing becomes harder and stronger. It is advantageous to provide this in the form of vertical lines or diagonal lines on the mushroom culture container, since the container will have good stability when erected. Note that the degree of transparency of the transparent film does not need to be safely transparent, but it is sufficient that the degree of transparency of the transparent film is such that the spread of mycelium can be determined from the outside, that is, the degree of transparency is at least the level of cloudy glass.

Furthermore, the method of making a mushroom culture container from a nonwoven fabric is not particularly limited, but it can be made using an automatic box making machine or a gusset bag making machine, such as one used for manufacturing paper containers for youth, milk, etc. By attaching the ends of the nonwoven fabric to the container by heat sealing, hot melt adhesive, or stitching, it is possible to easily obtain a mushroom seed transport container or mushroom culture container in the shape of a cube, cylinder, square prism bag, or the like.

The mushroom culture container of the present invention will be explained based on examples.

Example 1 A nonwoven fabric made of high-density polyethylene fiber (trade name: Tyvek, manufactured by DuPont, USA) with a basis weight of 61 g/m ² (thickness 0.17 mm) obtained by bonding fibers together using heat and pressure was made into an approximately 29 cm× Cut to 32cm, starting from the long edge.
A transparent film portion having a width of 5 mm and a length of 320 mm was provided at a position of 3.5 cm by hot pressing with a Teflon coated hot plate heated to approximately 105°C.

A total of four similar transparent film sections were provided parallel to this transparent film section at intervals of approximately 70 mm. Using this, the ends were joined by heat sealing to create a mushroom culture container in the shape of a rectangular prism with a side of 7 cm. (The bottom part was joined and sealed using the same structure as a gusset bag, but the top part was left open.) Into the obtained mushroom culture container, 85 parts of sawdust and rice bran were added.
About 0.8 parts of a culture medium with a moisture content of 60% was added in 15 parts, and the mixture was heat sterilized at 95°C for 180 minutes. After further cooling,
When the mushroom fungus was seeded on the surface of the culture medium and the top was sealed with a heat seal and culture was carried out, the growth of fungal hyphae was observed from the outside through the transparent film part of the mushroom culture container. Furthermore, due to the hardness (rigidity) of the transparent film portion, the mushroom culture container had good erectability, and the cultivation of mushroom fungi and cultivation of mushrooms was extremely successful.

Example 2 A high-density polyethylene fiber nonwoven fabric (trade name: Tyvek, manufactured by DuPont, USA) with a basis weight of 75 g/m ² and a thickness of 0.2 mm obtained by bonding fibers together using heat and pressure was made into a fabric with a width of about 62 cm and a length of about 62 cm. Cut to 45cm and add 10
Approximately 5% of the area of the nonwoven fabric was made into a transparent film using a heating bar provided with a large number of round heating parts each having a diameter of 5 mm at mm intervals.

Furthermore, a gusset bag with a folded width of 20 cm (left and right folds are 5 cm each) and a length of 45 cm was created by heat sealing.

When this was used as a container for transporting mushroom seeds, it was found to be in good condition with no damage during transport or contamination by various bacteria.

The mushroom culture container according to the present invention is easy to handle due to the rigidity of the transparent film part, and is inexpensive. It is also excellent in that the growth status of mushroom bacteria can be observed from the outside, and does not require special management techniques and can be used by many people. It also enables reliable transportation or cultivation of mushroom fungi.

[Brief explanation of the drawing]

FIG. 1 is a developed view of a mushroom culture container showing an example of the present invention. FIG. 2 is a perspective view of a mushroom culture container showing an example of the present invention. 1-Thermosoluble synthetic fiber nonwoven fabric, 2-Transparent film portion.

Claims (1)

[Claims for Utility Model Registration] (1) A mushroom seed fungus made of a thermo-soluble synthetic fiber nonwoven fabric that is partially made into a transparent film by heat pressing and that allows only a moderate amount of air to pass through without substantially allowing germs to pass through. A container used for transportation or mushroom culture. (2) A thermoplastic synthetic fiber nonwoven fabric that does not substantially allow germs to pass through, but only allows a moderate amount of air to pass through, has a basis weight of 30 to 120 g/m ² and is made of Olfine synthetic fibers bonded together using heat and pressure; The container used for transporting mushroom seeds or culturing mushroom bacteria according to claim 1, which is a nonwoven fabric having a thickness of 0.10 to 0.25 mm. (3) Utility model registration request for a transparent part provided in a thermoplastic synthetic fiber nonwoven fabric that does not substantially allow germs to pass through but only allows a moderate amount of air to pass through, and the shape of the transparent part is a linear shape with a width of 2 to 20 mm. A container used for transporting mushroom inoculum or culturing mushroom fungi as described in item 1.