JPH09187167A - Bag for fungus incubation - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a bag for fungus incubation used in culturing and packing the culture medium of Lentinus edodes or Grifola frondosa, etc., having improved workability especially in taking in and out of the culture medium and planting the fungus. SOLUTION: This gusseted bag 1 composed of a film having a hot melt type resin layer at least inside, perforations are made on the top side film 6 or the back side film 7 of the gusseted bag 1, the perforations are covered with a filter 4 made of a material impermeable to fungus, the four solid angles of the ridge line at the open end of the gusseted bag 1 are fused at the place from the open edge of the bag and the folding part after filling of the culturing medium as fused part 9.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mushroom culture bag for packaging a medium for mushrooms such as shiitake mushrooms, maitake mushrooms or enoki mushrooms, and particularly improved the workability of temporary sealing and inoculation for sterilizing the medium. Mushroom culture bag.

[0002]

2. Description of the Related Art Mushrooms such as shiitake mushrooms, maitake mushrooms or enoki mushrooms are inoculated into a medium such as sawdust in a packaging bag and cultured.
A gusset type bag is used as one of the packaging bags for sterilization in which this medium is filled and sealed. That is, there is used a gusset bag in which a through hole is provided in either one of the front surface and the back surface of the bag, and the through hole is covered with a filter made of a non-bacterial air-permeable material. However, when the gusset type packaging bag is filled with the medium under the bag, the medium is rounded as it approaches the upper end of the bag mouth. The method of cultivating mushrooms in a packaging bag is performed by first filling and compressing the culture medium in the packaging bag, folding the upper part of the bag, sterilizing by heating, cooling, and then opening the bag mouth to inoculate. However, if the bag mouth at the top of the bag is rounded, workability such as fold temporary sealing for sterilizing the medium, unsealing for inoculation and sealing of the bag mouth for resealing is extremely poor.

FIG. 2 is a perspective view showing a state in which a culture medium is filled in a mushroom culture bag consisting of a gusset bag, and FIG. 3 is a state in which heat sterilization is carried out.
In FIG. 2, when the culture medium 5 is filled below the gusset bag 1 having the filter 4, the gusset bag 1 has a quadrilateral cross section along the ridge line 2 of the gusset bag up to the place where the culture medium 5 is filled. Is formed, but it becomes a rounded state as it approaches the upper bag mouth 3 from that position.
Then, for heat sterilization, the upper part of the bag is folded with the surface on which the filter is attached facing inside (see FIG. 3). That is, the upper portion of the gusset bag 1 filled with the culture medium 5 is aligned with the ridge lines 2 of the gusset bag 1, the bag mouth 3 is closed, and the bag is folded over the filter 4 so that the upper portion of the bag overlaps, and heat sterilization is performed in this state. After heat sterilization, the mixture is cooled and then opened to inoculate the culture medium with bacteria, and only the bag mouth is sealed again to perform culture.

As described above, in order to cultivate shiitake mushrooms or the like in the gusset packaging bag, first, the medium is filled from the bag mouth 3 of the packaging bag up to a position near the non-bacterial filter, and then the medium is filled. The upper part of the bag is folded back and sealed at a certain place, sterilized in an autoclave, opened, inoculated, resealed, transported, and cultured, but from the upper part of the packaging bag to the bag mouth as described above. The more rounded it gets, the more difficult it is to carry out these tasks.

[0005]

Therefore, the present inventor has improved the above-mentioned drawbacks and, when carrying out sterilization and filling of a medium or bacteria into a mushroom culture bag consisting of a gusset type packaging bag, has a workability of the mushroom culture bag. As a result of various studies to provide the present invention, the present invention has been completed, and an object of the present invention is to provide a fungus culture bag having good workability.

[0006]

SUMMARY OF THE INVENTION The gist of the present invention is to provide a gusset bag made of a film having a heat-adhesive resin layer on at least the inner surface of the gusset bag, wherein a through hole is provided in either the front film or the back film of the gusset bag. , The through-hole is covered with a filter made of a non-bacterial and air-permeable material, and the corners of the four ridges on the bag mouth side of the gusset bag are filled with medium from the bag mouth end to a folded portion. A mushroom culture bag characterized in that a fused portion is formed by fusion up to the end.

That is, in the present invention, even if the culture medium is filled with the culture medium, the quadrangular section is formed by fusing the corners of the ridges of the gusset-type packaging bag where the adjacent faces contact each other. Since it can be held and can be easily folded back, the filling of the culture medium and the inoculation work can be easily performed. It is possible to adopt fusion from the bag mouth to the bottom, but if the fusion-bonded part becomes longer, more packaging material is required, so it may be sufficient to reach the position where the culture medium is filled. it can.

As the material of the packaging bag of the present invention, a film having a heat-adhesive resin layer on its inner surface is used. Specifically, polyester, stretched nylon, cellophane, etc. laminated with a polyolefin-based heat-adhesive resin are used. Which is a sheet or film or a polyolefin single-layer film, and the front film or the back film and the film forming the folding portions on the left and right side surfaces may be the same or different. Use paper, non-woven fabric, etc. as a breathable material that is impermeable to bacteria, cut it to the desired size, and provide a through hole in a part of the packaging bag, then attach it or open it. It is sandwiched between parts. The fusion portion of the present invention, from the bag mouth of the upper portion of the gusset bag to the position where the culture medium is filled, is a portion where the corner portion is fused at the ridge portion, and the fusion width is the size of the culture bag. It depends on the size, but it is about 3-8mm
It is a degree. This makes it easy to fold the fold line at the top of the bag, greatly improving workability.

The mushroom culture bag according to the present invention will be specifically described with reference to the drawings. FIG. 1 is a plan view of a mushroom culture bag according to the present invention, in which (a) is a sectional view taken along line AA and (b) is a sectional view taken along line BB. In the drawing, a gusset packaging bag 1 is composed of a front film 6, a back film 7 and a folding portion 8 which are made of a laminated film having a heat-adhesive resin layer on the inner surface. The surface film 6 of the gusset packaging bag 1 has a diameter of 20 m.
A through hole having a size of about m is provided, and the through hole is covered with a filter 4 made of polypropylene or the like. Then, the corner portion of the ridgeline from the bag mouth 3 of the gusset packaging bag 1 to the position where the culture medium is filled is fused and the fused portion 9 is formed.
Is formed.

Next, the present invention will be described more specifically with reference to examples. Width 200mm, Gazette folding part 120m
m, 450 mm long gusset bag is made from inflation-formed 70 μm thick polypropylene film, and the diameter is 20 m at the center about 150 mm from the top.
m through holes, polypropylene microporous membrane as a filter is attached by heat bonding to the portion, and further gusset folds are respectively provided from the upper part for about 100 mm,
A culture bag was heat-sealed with a width of 5 mm to form a columnar culture bag. This culture bag was filled with about 3 kg of a medium mainly containing sawdust and compressed. After that, fold with the surface with the filter attached inside, fix with tape, sterilize with an autoclave, cool, and then "Matake""Enokimushroom"
The inoculum of mushrooms of the same purpose was inoculated in a sterile room. Through these operations, the columnar adhesive portion formed on the folded portion of the gusset bag was excellent in workability and suitability for automatic machines when aligning the sealing portion and folding the bag again after inoculation.

[0010]

As described above, according to the present invention, since the ridge of the gusset packaging bag is formed with the pillar portion, the packaging bag can maintain a quadrilateral cross section, which allows the filling of the culture medium and the mushroom. In this case, the opening end portion can be easily opened and closed, and the workability thereof can be improved.

[Brief description of the drawings]

FIG. 1 is a plan view of a mushroom culture bag according to the present invention,
(A) shows sectional drawing in line AA, (b) shows sectional drawing in line BB.

FIG. 2 is a perspective view of a conventional mushroom culture bag filled with a culture medium.

FIG. 3 is a perspective view of a state in which the mushroom culture bag is filled with the culture medium and then folded back.

[Explanation of symbols]

1 bag 2 ridge line 3 bag mouth 4
Filter 5 Culture medium 6 Front film 7 Back film 8
Folding part 9 Fusion part

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Tsuneo Kaneoka 1-44-1 Nihonbashi-Bakurocho, Chuo-ku, Tokyo Fujimori Industry Co., Ltd.

Claims (1)

[Claims] 1. A gusset bag made of a film having a heat-adhesive resin layer on at least the inner surface thereof, wherein a through-hole is provided in either one of a front film and a back film of the gusset bag, and the through-hole is impermeable. Cover with a filter made of air-permeable material, and weld the corners of the four ridges on the bag mouth side of the gazette bag from the end of the bag mouth at the upper part until the medium is filled and the folded portion is reached. A mushroom culture bag characterized by being formed as a fused portion.