JP4706355B2 - Medium container, method for producing the same, and method for producing simple test device - Google Patents

Description

  The present invention relates to a medium container, a method for producing the same, and a method for producing a simple test device, and more particularly to a medium container suitable for a sheet-like medium using a nonwoven fabric, a method for producing the same, and a method for producing a simple test tool. .

A petri dish (petri dish) is often used as a general medium container for storing a medium for culturing microorganisms. As the petri dish material, glass or plastic is generally used.
In the case of repeated use, the glass petri dish is often washed before use. When a glass petri dish is used, the glass petri dish must be cleaned and sterilized for re-use.
In the case of food inspection or the like, it is necessary to perform a large number of microorganism culture tests, and if a glass petri dish is used for such a large number of microorganism culture tests, much labor is required. Therefore, when many cultures are performed, a sterilized plastic petri dish that can be discarded is used (see Patent Document 1). Or the film-form culture medium using a plastic film is used (refer patent document 2).
When a large amount of plastic petri dishes or film-like media using plastic films are discarded, the burden on the environment increases.

  On the other hand, if two thick letters are pasted together with an adhesive and a hole for inserting a disc-shaped filter paper piece is punched into one thick letter (see Patent Document 3), even if discarded in large quantities, Since most of it is cellulose, it does not use petroleum-derived plastics, so the environmental impact can be reduced.

Japanese Patent No. 3073982 Japanese Patent No. 3442865 Japanese Utility Model Publication 4-717

As described above, in a conventional method for producing a medium container, particularly a paper medium container, a filter paper or a non-woven fabric punched into a desired shape, for example, a circular shape (disc shape) in advance, Since the manufacturing process of fitting in the hole is indispensable, there is a problem that it is difficult to position and fix the filter paper and the nonwoven fabric, and the production efficiency is deteriorated.
In addition, in the case of a conventional paper medium container, there is a problem that the drug penetrates into the thick letter from the periphery of the circular hole, and the medium is in contact with the thick letter, so that the medium is easily contaminated by various bacteria. Moreover, in the case of a conventional paper medium container, there is a problem that the medium formed on the filter paper or the nonwoven fabric fitted in the upper thick letter hole cannot be observed from the bottom side of the container. On the other hand, in the case of a film culture medium using a plastic petri dish or a plastic film, the above-mentioned problem does not occur, but as described above, there is a problem that a load on the environment is increased due to disposal.
The present invention has been made to solve the above-described problems, and an object of the present invention is to improve the production efficiency of a medium container, particularly the medium paper container.
Another object of the present invention is to provide a medium paper container or a simple test tool using a production method with improved production efficiency.
Furthermore, an object of the present invention is to provide a medium container in which the load on the environment due to disposal is small, the liquid agent does not easily penetrate into the mount, and the medium can be observed from below.

According to a first aspect of the present invention, there is provided a method for producing a medium container, the step of preparing two mounts including one mount having a thermoplastic resin laminated on at least one surface, and at least one of the two mounts Forming an opening in the sheet, and sandwiching a sheet member made of an aggregate having a gap between the aggregates or a porous body having holes so as to be disposed in the opening and the surrounding area thereof, and While the sheet member is sandwiched between the two mounts, the thermoplastic resin is caused to flow by applying heat and pressure to fill the holes or gaps of the sheet member with the thermoplastic resin, and the two mounts are formed by the thermoplastic resin. Is to stick together.
The method for producing a medium container according to the second problem solving means includes a step of preparing two mounts, a step of forming an opening in at least one of the two mounts, and a surface on which the two mounts are bonded together A sheet member made of a porous body having holes or an aggregate having a gap between the aggregates so as to be disposed in the opening and the surrounding area between the mount and the step of applying an adhesive to at least one of the two The step of sandwiching the two sheets of paper and the sheet member sandwiched between the two sheets of paper, the adhesive is made to flow by applying pressure, the adhesive is filled in the hole or gap of the sheet member, and two sheets of adhesive are used. It is to paste the mounts.
A medium container manufacturing method according to a third problem solving means includes a step of preparing two mounts, a step of forming an opening in at least one of the two mounts, and an assembly having a gap between the assemblies Alternatively, a step of applying an adhesive or a thermoplastic resin to a sheet member made of a porous body having holes, and a step of sandwiching the sheet member between two mounts so as to be arranged in the opening and the surrounding area between the mounts With the sheet member sandwiched between two mounts, the adhesive is caused to flow by applying pressure, or the thermoplastic resin is caused to flow by applying heat and pressure, and the adhesive is inserted into holes or gaps in the sheet member. Alternatively, a thermoplastic resin is filled and two mounts are pasted together with an adhesive or a thermoplastic resin.
In addition to the configuration of any one of the first to third problem solving means, the method for producing a culture medium container according to the fourth problem solving means continuously includes two mounts and a sheet member from a roll-shaped raw material. To be supplied.
In addition to the configuration of any one of the first to fourth problem-solving means, the method for producing a culture medium container according to the fifth problem-solving means, after attaching two sheets of paper with a sheet member interposed therebetween, The method further includes a step of forming a recess in the outer peripheral region by drawing.
In addition to the configuration of any one of the first to fourth problem solving means, the method for producing a medium container according to the sixth problem solving means adds two sheets of paper with a sheet member interposed therebetween, The method further includes a step of forming a rib around the periphery by drawing.
In addition to the structure of any one of the first to sixth problem solving means, the manufacturing method of the medium container according to the seventh problem solving means adds two sheets after pasting the two mounts with a sheet member interposed therebetween. The method further includes a step of forming a leg portion by bending the edge portion of the base sheet downward.
In addition to the configuration of any one of the first to seventh problem solving means, the method for manufacturing a medium container according to the eighth problem solving means uses a biomass plastic film as at least one of the two mounts. Is.
The medium container manufacturing method according to the ninth problem solving means uses biomass plastic as a thermoplastic resin in addition to any one of the first to eighth problem solving means.
The medium container manufacturing method according to the tenth problem solving means includes, in addition to any of the configurations of the first to ninth problem solving means, a portion disposed in the opening portion of the sheet material and a peripheral edge of the opening portion. A step of forming a discontinuous cut along the line is further provided.
A method for manufacturing a simple test instrument according to an eleventh problem solving means comprises a step of preparing a pair of mounts having an opening in at least one of two sheets, and an aggregate or a porous body having a gap between the aggregates The step of sandwiching the sheet member between a pair of mounts, and filling the holes or gaps of the sheet member in the region other than the openings, and bonding the pair of mounts together, the opening is formed as a dish-like depression by the filling member And a region not filled with the filling member is provided, and the region surrounded by the mount and the filling member and the region where the sheet member is arranged is coupled to the dish-shaped depression.
A medium paper container according to a twelfth problem solving means includes a pair of paper mounts having an opening in at least one of two sheets, and a gap between a porous body or an assembly sandwiched between the pair of mounts. The cellulose sheet member made of an aggregate having a structure and an opening in the dish-like depression for storing the culture, so that the hole or gap of the cellulose sheet member is filled in a region other than the opening, and the pair of mounts And a filling member for bonding together.
In addition to the configuration of the twelfth problem solving means, the medium paper container made by the thirteenth problem solving means is a compression of a paper mount around the opening.
In addition to the configuration of the twelfth or thirteenth problem solving means, the medium paper container by the fourteenth problem solving means has a film formed on the side wall of the opening.
The medium paper container according to the fifteenth problem solving means comprises a sheet member made of an aggregate in which a paper upper mount having an opening and a transparent plastic film lower mount have a porous body or a gap between the aggregates. The sheet member is sandwiched so as to be disposed at least between the opening and the surrounding area, and is bonded with an adhesive or a thermoplastic resin. Is filled with an adhesive or a thermoplastic resin.
In addition to the configuration of the fifteenth problem solving means, the culture medium paper container according to the sixteenth problem solving means has a dish-shaped molding portion at a portion where the lower mount faces the opening.
In addition to any of the configurations of the twelfth to sixteenth problem solving means, the culture medium paper container according to the seventeenth problem solving means is arranged along the periphery of the opening in the portion disposed in the opening in the sheet material. A discontinuous cut is formed.
The medium paper container according to the eighteenth problem solving means has an upper mount made of a transparent plastic film having a dish-shaped molded portion, an opening corresponding to the dish-shaped molded portion, and is attached to the upper mount by an adhesive or a thermoplastic resin. A sheet-like lower mount and a sheet member made of a porous body or an aggregate having a gap between the aggregates and placed on a dish-shaped molding unit are provided.
In the medium paper container according to the nineteenth problem solving means, in addition to any one of the fifteenth to eighteenth problem solving means, the transparent plastic film is a transparent biomass plastic film.
The medium paper container according to the twentieth problem solving means is one in which the thermoplastic resin is biomass plastic in addition to any one of the fifteenth to nineteenth problem solving means.
In addition to any of the configurations of the fifteenth to twentieth problem-solving means, the culture medium paper container according to the twenty-first problem-solving means is formed by bending the edge part downward at the edge part of two mounts. It has a leg portion.

According to the method for producing a medium container of the first problem solving means, when two sheets of paper are pasted together, by filling the hole or gap of the sheet member around the opening with the flowed thermoplastic resin, Since the dish-shaped depression is formed in the opening and the sheet member is fixed at the same time, the step of positioning and fixing the sheet member in the opening is omitted, and the manufacturing efficiency can be improved.
According to the method for producing a culture medium container of the second problem solving means, when two sheets of paper are pasted together, the hole or gap of the sheet member around the opening is filled with an adhesive so that the inside of the opening is filled. Since the sheet member is also fixed at the same time as the dish-shaped depression is formed, there is an effect that the process of fixing the sheet member is omitted and the manufacturing efficiency can be improved.
According to the medium container manufacturing method of the third problem solving means, when two sheets of paper are pasted together, the hole or gap of the sheet member around the opening is filled with an adhesive or a thermoplastic resin. Since the dish-shaped depression is formed in the opening and the sheet member is fixed at the same time, the step of fixing the sheet member is omitted, and the manufacturing efficiency can be improved.
According to the method for manufacturing a medium container of the fourth problem solving means, since the material is supplied in a roll-shaped raw fabric, it is possible to continuously produce the material and to further improve the manufacturing efficiency.
According to the method for manufacturing a medium container of the fifth problem solving means, when the recess is formed by drawing, the mount in the outer peripheral region of the opening is compressed, and there is an effect that it is difficult for the medicine to penetrate into the mount. .
According to the culture medium manufacturing method of the sixth problem solving means, there is an effect that the bending strength of the culture medium container can be improved by the rib.
According to the culture medium manufacturing method of the seventh problem solving means, the leg can improve the bending strength of the culture medium container, and the container mounts the bottom of the dish-shaped depression in which the culture medium is formed. There is an effect that it can be prevented from contacting the surface to be placed.
According to the method for producing a culture medium container of the eighth problem solving means, by using a biomass plastic film as at least one mount, generation of harmful components can be suppressed even if the discarded container is incinerated. In addition, if the discarded container is disposed of in the landfill, it is decomposed in the ground, so that the load on the environment can be reduced.
According to the method for producing a culture medium container of the ninth problem solving means, the biomass plastic is used as the thermoplastic resin for bonding the mounts and filling the gaps or holes in the sheet member. Even when either processing or landfill processing is employed, there is an effect that the load on the environment is reduced.
According to the culture medium manufacturing method of the tenth problem solving means, there is an effect that the penetration of the liquid agent into the mount can be suppressed by forming a cut in the sheet member.
According to the method for manufacturing a simple test instrument of the eleventh problem solving means, when the two mounts are pasted together, by providing a region not filled with the filling member, the sheet member is surrounded by the mount and the filling member. Since the area | region arrange | positioned is couple | bonded and formed in a dish-shaped hollow, there exists an effect that manufacturing efficiency can be improved.
According to the medium paper container of the twelfth problem solving means, both the paper mount and the sheet member are made of cellulose, can be manufactured by obtaining materials from natural resources such as wood, and can be incinerated for easy disposal. Therefore, there is an effect that a medium container with a small environmental load can be provided at low cost.
According to the culture medium container of the thirteenth problem solving means, the mount in the outer peripheral region of the opening is compressed, and there is an effect that the medicine hardly penetrates the mount.
According to the medium paper container of the fourteenth problem solving means, the side wall of the opening is separated from the medium by the film, and the medium is difficult to touch the side wall of the opening. .
According to the medium container of the fifteenth problem solving means, since more than half of the weight of the container is paper, there is an effect that the load on the environment at the time of disposal is relatively small and the cost can be suppressed. Moreover, since the lower mount is transparent, there is an effect that the medium formed on the sheet member can be observed from the bottom surface side of the container.
According to the medium container of the sixteenth problem solving means, since the dish-shaped molded part is provided in the portion facing the opening in the lower mount, the level of the sheet member is the same as the depth of the dish-shaped molded part in the opening. Is lowered, and there is an effect that the liquid agent hardly penetrates into the paper upper mount.
According to the culture medium container of the seventeenth problem solving means, since the discontinuous cut is formed along the periphery of the opening in the sheet material, the liquid agent penetrates into the paper upper mount through the sheet material. The effect is difficult.
According to the medium container of the eighteenth problem solving means, since more than half of the weight of the container is paper, there is an effect that the load on the environment at the time of disposal is relatively small and the cost can be suppressed. In addition, since the upper mount having the dish-shaped molded portion is transparent and the opening corresponding to the dish-shaped molded portion is formed in the lower mount, the medium formed on the sheet member is observed from the bottom surface side of the container. There is an effect that can be. Further, since the sheet member and the paper lower mount are not in contact with each other, there is an effect that the liquid agent does not penetrate into the lower mount.
According to the medium container of the nineteenth problem solving means, since one mount is made of a transparent biomass plastic film and the other mount is made of paper, the generation of harmful components is suppressed even if the discarded container is incinerated. In addition, if the discarded container is disposed of in the landfill, it is decomposed in the ground, so that the load on the environment can be reduced.
According to the culture medium container of the twentieth problem solving means, when biomass plastic is used as a thermoplastic resin for bonding two sheets of paper, when either incineration processing or landfill processing is adopted with disposal of the container However, there is an effect that the load on the environment is reduced.
According to the culture medium container of the twenty-first problem solving means, the bending strength of the culture medium container can be improved by the legs formed by bending the edges of both mounts, and the medium is formed in a dish-like shape. There is an effect that the bottom of the part can be prevented from contacting the surface on which the container is placed.

(First embodiment)
Hereinafter, a culture paper container and a manufacturing method thereof according to a first embodiment of the present invention will be described with reference to FIGS.
FIG. 1 is a plan view showing a configuration of a medium paper container according to the first embodiment, and FIG. 2 is an assembly diagram of the medium paper container of FIG.
A medium paper container 1 shown in FIG. 1 includes a planar rectangular mount 2a, 2b that overlaps with each other and a nonwoven fabric 4 sandwiched between two mounts 2a, 2b. The mount 2a has a circular opening 3 in a substantially central portion. A thermoplastic resin is laminated on both sides of each of the two mounts 2a and 2b. The film thickness of the thermoplastic resin to be laminated is, for example, about several μm. And it is preferable that the thickness of the nonwoven fabric 4 after shrinkage | contraction by the pressure at the time of affixing the base_sheet | mounting_paper 2a, 2b is thinner than the thickness for two thermoplastic resin films for lamination.
3 is a cross-sectional view taken along line XX of FIG. 4 and 5 are partially enlarged views of region A and region B shown in FIG. 6 is a cross-sectional view taken along line YY of FIG.
As shown in FIG. 3, the composite layer 5 which consists of the nonwoven fabric 4 and the thermoplastic resin 6 which is a filler is formed between the mounts 2a and 2b. In the composite layer 5, the gap between the nonwoven fabrics 4 is filled with the thermoplastic resin 6. Two sheets of paper mounts 2 a and 2 b are bonded together by the thermoplastic resin 5 of the composite layer 5. And the dish-shaped hollow 7 of FIG. 6 is formed by forming the composite layer 5. The nonwoven fabric 4 continues from the dish-shaped depression 7 to between the two mounts 2a and 2b. However, in the composite layer 5, the gap between the nonwoven fabric 4 is filled with the thermoplastic resin 6, so that the medium is dissolved with, for example, alcohol. Even if it is dropped on the nonwoven fabric 4, it does not penetrate into the nonwoven fabric 4 sandwiched between the two mounts 2a and 2b. Thereby, a culture medium can be formed limited to the dish-shaped depression 7. And since the composite layer 5 is formed simultaneously when two board | substrates 2a and 2b are bonded together on both sides of the nonwoven fabric 4, a simplification of a manufacturing process is achieved and production efficiency improves. By increasing the efficiency of production, a medium paper container can be provided at a low cost.
As can be seen from FIGS. 3 and 6, the region where the opening 3 is formed is one step lower than the surrounding region. The concave portion of the region 8 including the opening 3 and the periphery thereof is formed by, for example, drawing the region 8 after pasting two paper mounts 2a and 2b. By this drawing process, the mount 2a around the opening 3 is compressed. In the compressed mount 2a, the gap between the fibers of the paper is reduced, so that it is possible to suppress the penetration of the liquid at the time of forming the medium and the liquid for inoculating the medium into the mount 2a.
Furthermore, a film made of a resin such as silicone resin or polyethylene can be formed on the side wall 2a1 of the opening 3 shown in FIG. Thereby, the penetration of the liquid agent into the side wall of the opening 3 can be further suppressed.

Next, a method for manufacturing the medium paper container shown in FIG. 1 will be described with reference to FIG.
First, roll-shaped original fabrics 10 and 11 each having a base paper, which is a material of the mounts 2a and 2b shown in FIG. For example, polyethylene is laminated on both surfaces of the roll-shaped original fabrics 10 and 11.
Moreover, a nonwoven fabric is also supplied with the roll-shaped raw fabric 12. FIG. These roll-shaped raw materials 10 to 12 are slit in advance and trimmed to a desired width. Accordingly, the strip-shaped laminated papers 14 and 15 and the non-woven fabric 16 having a desired width are supplied from the roll-shaped original fabrics 10 to 12.
The laminated base paper supplied from the roll 10 is punched into a circle by the Thomson die 13 to form the opening 3 shown in FIG. The laminated paper 14, the nonwoven fabric 16, and the laminated paper 15 in which the openings are formed are superposed and laminated by applying pressure while being heated by the heating and pressing roll 17. By this lamination, the laminated papers 14 and 15 are pasted together with the nonwoven fabric 16 sandwiched between the laminated papers 14 and 15. At this time, among the nonwoven fabric 16, the one sandwiched between the laminated papers 14 and 15 is filled with polyethylene, and the gaps between the fibers of the nonwoven fabric 16 are filled.
After being laminated, the die 18 is subjected to drawing processing around the opening and its periphery, and a recess is formed around the opening.
After the drawing process is performed, the medium paper container 1 as shown in FIG. 1 is formed.
According to the method for manufacturing a medium paper container shown in FIG. 7, since the materials of the mounts 2a and 2b and the nonwoven fabric 4 are supplied with the rolls of the raw fabric 10 to 12, continuous production can be performed, and the manufacturing cost can be reduced.

In the first embodiment, the case where the thermoplastic resin is laminated on the paper mounts 2a and 2b has been described. However, for example, a plastic film can be used instead of the mounts 2a and 2b made of laminated paper. It is also possible to use a film made of a natural material such as cellulose such as cellophane or starch, subjected to water resistance processing, and laminated with a plastic film. Or what laminated | stacked the plastic film on the film which consists of an inorganic substance can be used. In addition, a biomass plastic film such as polylactic acid (PLLA) resin or polybutylene succinate (PBS) resin can be used as the mount. In that case, the discarded container is incinerated and landfilled. It is also possible.
In addition, the nonwoven fabric is cited as an example of an aggregate in which aggregates of fibers are integrated with a gap, and those made of cellulose such as filter paper formed by spreading cellulose fibers and nonwoven fabrics made of cotton fibers are preferable, For example, a nonwoven fabric made of polyester, rayon, or polypropylene can be used. In this case, however, it is necessary to appropriately select values such as the melting temperature and melt flow rate of the film to be laminated in accordance with the material of the nonwoven fabric. A glass cloth or the like can also be used.
In the description of the first embodiment, a porous body such as cellulose or a plastic sponge can be used instead of the nonwoven fabric.
The material of the mounts 2a and 2b is preferably made of paper as described in the first embodiment, but may be a plastic film or ceramic paper, for example.
In addition, as the thermoplastic resin, those having high chemical resistance such as polyethylene, polypropylene, and polyester are preferable, but are not limited to these plastics. For example, polylactic acid (PLLA) resin and polybutylene succinate It is also possible to use biomass plastics with a low environmental impact such as (PBS) resin.

(Second Embodiment)
In the first embodiment, the thermoplastic resin is used as a filler for bonding the two mounts 2a and 2b at the same time as filling the gap between the nonwoven fabrics 4. However, for example, a solvent-based or emulsion-based adhesive may be used. it can.
In this case, first, the base paper used as the material for the mounts 2a and 2b is subjected to a treatment for imparting resistance to the liquid agent when adding a culture medium or bacteria. For example, such resistance can be imparted to the mounts 2a and 2b by laminating or impregnating a resin resistant to the liquid agent.
Next, an adhesive is applied to the base paper used as the material for the mounts 2a and 2b. For example, when the material is supplied from a roll as shown in FIG. 7, the adhesive is applied before the heating and pressing roller 17. In this case, instead of the laminated papers 14 and 15, an adhesive is applied to the side to be bonded of the base paper subjected to the above-described processing. If heating is not required to cure the adhesive, a roller without a heating function can be used in place of the heating and pressure roller 17. Needless to say, it may be a press using a flat plate other than a roller.
By allowing the adhesive to penetrate into the gap between the nonwoven fabrics and adhering the mounts 2a and 2b, the production efficiency can be improved as in the first embodiment.
As the adhesive, for example, an acrylic emulsion adhesive can be used.

(Third embodiment)
In the first and second embodiments, the case where the thermoplastic resin or the adhesive is laminated or applied to the mounts 2a and 2b has been described. However, these may be laminated or applied to the nonwoven fabric 16 shown in FIG. 7, for example. Is possible. In this case, in order not to lose the function as a nonwoven fabric, it is necessary to laminate on the side opposite to the side facing the mount 2a on which the circular opening is formed. If lamination is performed on the side of the mount 2a, it is necessary to prevent the laminated thermoplastic resin or adhesive from being disposed in the portion where the opening is disposed. Alignment is required.
In order to improve the production efficiency, it is preferable to avoid alignment as much as possible. However, if it takes time to penetrate and bond the adhesive into the gaps of the nonwoven fabric 16 by following from one side, it is preferable to apply the adhesive to both surfaces of the nonwoven fabric 14 even if alignment is necessary.

(Fourth embodiment)
In the first to third embodiments, as shown in FIG. 6, by forming a large concave portion 8 in the depression 7 (opening portion 3) of the medium paper container 1, a liquid medium for forming the medium and bacteria It is devised not to spill liquid dripping for inspection. The mount 2a around the opening is compressed by a drawing process performed when the recess 8 is formed.
8 and 9 are a cross-sectional view and a partially enlarged cross-sectional view showing the configuration of the culture medium paper container according to the fourth embodiment. In the fourth embodiment, in the manufacturing process, the rib 19 can be formed while compressing the mount 2a around the opening by drawing. By forming the rib 19, the bending strength of the medium paper container is improved with respect to the force of bending the pasted mounts 2 a and 2 b. For example, the rib 19 is formed by strongly sandwiching the vicinity of the outer periphery of the opening in a ring shape with a mold, and strongly pushing and squeezing from the mount 2b side toward the mount 2a.

(Fifth embodiment)
In the first to fourth embodiments, there is a drawback that there is no air permeability when a plurality of medium-sheet containers 1 and 1A are stacked. In the medium paper container 1B of this embodiment, as shown in FIG. 10 and FIG. 11, measures are taken so that a gap 21 is formed as a passage for air when the rib 20 is formed and stacked. Has been. By providing air permeability, it is possible to expedite drying of the liquid agent during the formation of the culture medium and the inspection of the bacteria, and to supply the necessary gas easily.
In addition, although the shape of the rib 19 was shown as a straight line, the convex portion may be curved, or a conical protrusion or the like may be used instead of the rib.

(Sixth embodiment)
The sixth embodiment relates to a simple test device. The simple test tool is a concept including a medium-made paper container, and includes one used for inspection of medicines, blood, and excrement in addition to culture of organisms such as bacterial cells.
The simple test device 30 shown in FIGS. 12, 13, and 14 includes openings 31 and 32, similar to the medium paper containers 1, 1 </ b> A, and 1 </ b> B. And the point by which the nonwoven fabric 4 is arrange | positioned in an opening part is the same as that of the container made from a culture paper, The thermoplastic resin which flows when laminating the mounts 2a and 2b and the nonwoven fabric 4 as demonstrated in 1st Embodiment. A dish-shaped depression is formed by the adhesive.
The feature of the simple test device 30 is that the nonwoven fabric 4 arranged in the openings 31 and 32 is connected in a region 33 not filled with a filler. As shown in FIG. 14, the nonwoven fabric 4 and the composite layer 5 of a thermoplastic resin or an adhesive are formed on both sides of the region 33, and the upper and lower sides are sandwiched between the mounts 2a and 2b. And inside the area | region 33, the porous body and aggregate | assembly like a nonwoven fabric are arrange | positioned. Therefore, due to capillary action, the liquid dropped from the opening 31 reaches the test medicine added to the nonwoven fabric in the opening 32. Thereby, a some test | inspection can be performed by one liquid agent dripping. Further, when the test drug dislikes dust or the like, contamination can be suppressed by covering the opening 32 with a transparent film.

  The manufacturing method of the simple test device 30 according to the sixth embodiment can also be performed by the method described in the first embodiment. However, in order to form the region 33, a portion corresponding to the region 33 is laminated with a thermoplastic resin or an adhesive. It is necessary to reduce or eliminate the agent. When the laminate film is processed in advance or the adhesive is applied, for example, a printing technique can be used to easily limit the place where the adhesive is applied.

(Seventh embodiment)
15 is a perspective view showing the configuration of the medium container according to the seventh embodiment, FIG. 16 is a cross-sectional view taken along the line VV of FIG. 15, and FIG. 17 is an assembly view of the medium container of FIG.
As shown in FIGS. 15 to 17, the culture medium container 1 </ b> C according to the seventh embodiment includes a pair of two mounts 21 a and 21 b that are rectangular when viewed from above and below, and a space between the two mounts 21 a and 21 b. And a nonwoven fabric 4 sandwiched between the two.
The upper mount 21a is made of paper having a thermoplastic resin laminated on both sides, and has a circular opening 31 at a portion slightly closer to one short side from the center. The laminated thermoplastic resin may be a polyethylene resin, a polypropylene resin or a polyester resin with excellent chemical resistance, or may be a biomass plastic such as a polylactic acid resin or polybutylene succinate resin, Usually, the thickness is about several μm.
The lower mount 21b is made of a transparent biomass plastic film. As the film, a transparent polylactic acid resin film or polybutylene succinate resin film having a thickness of about 50 to 1000 μm is used.
The nonwoven fabric 4 has a rectangular planar shape slightly smaller than the mounts 21a and 21b, and is sandwiched between the two mounts 21a and 21b so as to be disposed in the opening 31 and the surrounding area.
The two mounts 21a and 21b are bonded to each other by a thermoplastic resin laminated on the lower surface of the upper mount 21a by superimposing them and applying heat and pressure. At the same time, the gap between the fibers constituting the nonwoven fabric 4 is filled with a thermoplastic resin in a portion arranged in a region other than the opening 31.
The lower mount 21b has a dish-shaped forming portion 211 at a portion facing the opening 31 of the upper mount 21a. Therefore, the level of the nonwoven fabric 4 is lowered by the depth of the dish-shaped forming portion 211 at the portion facing the opening 31, and the liquid agent is difficult to penetrate from the nonwoven fabric 4 into the paper upper mount 21a. The dish-shaped forming portion 211 has a circular shape that is the same as or slightly smaller than the opening 31 when viewed from the plane, and has a depth of 0.5 to 10 mm. The dish-shaped forming portion 211 can be formed, for example, by pasting the two mounts 21a and 21b and then drawing the lower mount 21b through the opening 31 of the upper mount 21a.
Four leg portions 212a and 212b are formed on the four side portions of the two mounted base sheets 21a and 21b by bending each side portion downward. The bending strength of the container 1C is improved by these leg portions 212a and 212b. Further, by setting the height of the legs 212a and 212b to be larger than the height of the dish-shaped molding part 211 protruding from the lower surface of the lower mount 21b, the lower surface of the dish-shaped molding part 211 is placed on the surface on which the container 1C is placed. Contact is avoided. In order to facilitate bending of the side portions, the four corners of the mounts 21a and 21b are cut obliquely, and short cuts 213a and 213b are made from the cut portions toward the center. When the mount 1C is rectangular, at least two opposing sides of the four sides may be bent to form the leg portions.
A discontinuous cut 41 is formed along the circular periphery of the opening 31 in the nonwoven fabric 4 at the portion facing the opening 31. By these cuts 41, the penetration of the liquid agent from the nonwoven fabric 4 to the paper upper mount 21a is further suppressed. Note that it is advantageous in terms of ease of processing that the cut 41 is formed in advance before the nonwoven fabric 4 is sandwiched between the two mounts 21a and 21b.
The medium container 1C of this embodiment is, for example, substantially the same as in the first embodiment, while supplying the two mounts 21a and 21b and the nonwoven fabric 4 in a roll-shaped raw fabric, After the laminating process and the forming process of the dish-shaped forming part 211 by drawing, the sheet is cut into a predetermined size, and then the four sides of the mounts 21a and 21b are bent to form the leg parts 212a and 212b. It is possible to reduce the manufacturing cost. The dish-shaped forming portion 211 can be formed at the same time as the laminating process, or can be performed simultaneously with the formation of the leg portions 212a and 212b.
Further, since the medium container 1C is composed of the paper mount 21a, the biomass plastic film mount 21b, and the non-woven fabric 4, the incineration process or the landfill process may be used for disposal. Even if it exists, the load with respect to an environment can be made small.

(Eighth embodiment)
18 is a perspective view showing the configuration of the medium container according to the eighth embodiment, FIG. 19 is a cross-sectional view taken along line WW of FIG. 18, and FIG. 20 is an assembly view of the medium container of FIG.
As shown in FIGS. 18 to 20, the culture medium container 1 </ b> D of the eighth embodiment has a transparent biomass plastic film upper mount 21 b having a dish-shaped molding part 211, and an opening 31 corresponding to the dish-shaped molding part 211. And a paper lower mount 21 a bonded to the upper mount 21 b and a nonwoven fabric 4 A placed on the dish-shaped forming portion 211. That is, in this embodiment, the two mounts 21a and 21b of the seventh embodiment are arranged upside down and stacked, and the nonwoven fabric 4A is replaced by sandwiching between the mounts 21a and 21b, and the upper mount 21b is dish-shaped. It is configured to be placed on the part 211.
The non-woven fabric 4A has a circular shape that is substantially equal to or smaller than the dish-shaped forming portion 211 of the upper mount 21b. In this embodiment, since the nonwoven fabric 4A is placed on the dish-shaped forming portion 211 formed on the upper mount 21b made of a transparent biomass plastic film film, it does not come into contact with the lower mount 21a made of paper. Therefore, in the case of this culture medium container 1D, the contamination of the culture medium due to the penetration of the liquid agent into the paper mount 21a and the contact with the paper mount 21a can be reliably prevented.
The two mounts 21b and 21a are bonded to each other by a thermoplastic resin laminated on the upper surface of the lower mount 21a by superimposing them and applying heat and pressure.
The four legs 212b and 212a are formed by bending each side downward on the four sides of the two mounted bases 21b and 21a, and the four corners of the bases 21b and 21a are slanted. This is the same as the seventh embodiment in that short cuts 213b and 213a are made from the cut portion toward the center.
The medium container 1D of this embodiment is, for example, a plate-shaped forming part 211 by punching the opening 31, laminating, and drawing while supplying two mounts 21 b and 21 a in a roll-shaped raw fabric. After cutting into a predetermined size through the forming step, the four sides of the mounts 21b and 21a are bent to form the legs 212b and 212a, and the nonwoven fabric 4A cut into a predetermined shape is placed on the dish-shaped forming portion 211. In this way, it is possible to manufacture continuously, thereby reducing the manufacturing cost. The formation of the dish-shaped forming portion 211 can be performed simultaneously with the laminating step, and can also be performed simultaneously with the forming of the leg portions 212b and 212a. Of course, the non-woven fabric 4A may be placed on the dish-shaped forming portion 211 during use.

It is a top view which shows one structural example of the culture medium paper containers by 1st Embodiment of this invention. FIG. 2 is an assembly diagram of the medium paper container of FIG. 1. It is the XX sectional view taken on the line of FIG. It is a partial expanded sectional view of the area | region A shown in FIG. It is a partial expanded sectional view of the area | region B shown in FIG. It is the YY sectional view taken on the line of FIG. It is a figure for demonstrating the manufacturing method of the culture medium paper containers by 1st Embodiment of this invention. It is sectional drawing which shows one structural example of the culture medium paper containers by 4th Embodiment of this invention. FIG. 9 is a partial enlarged cross-sectional view of the medium paper container shown in FIG. 8. It is a top view which shows one structural example of the culture medium paper containers by 5th Embodiment of this invention. FIG. 11 is a cross-sectional view showing a state in which a plurality of medium paper containers of FIG. 10 are stacked. It is a top view which shows the example of 1 structure of the simple test device by 6th Embodiment of this invention. It is an assembly drawing of the simple test device of FIG. It is the ZZ sectional view taken on the line of FIG. It is a perspective view which shows one structural example of the container for culture media by 7th Embodiment of this invention. It is the VV sectional view taken on the line of FIG. FIG. 16 is an assembly diagram of the medium container of FIG. 15. It is a perspective view which shows one structural example of the container for culture media by 8th Embodiment of this invention. It is the WW sectional view taken on the line of FIG. It is an assembly drawing of the container for culture media of FIG.

Explanation of symbols

1, 1A, 1B, 1C, 1D Medium containers 2a, 2b, 21a, 21b Mount 3,31 Openings 4, 16, 4A Non-woven fabric (sheet member)
41 Cut 14, 15 Laminated paper.
211 Leg-shaped molded parts 212a, 212b Legs

Claims (20)

And preparing a two mount made of paper comprising at least one surface to made a piece of paper which the thermoplastic resin is laminated mount,
Forming an opening in at least one of the two mounts;
Sandwiching a sheet member composed of an assembly having a gap between the aggregates or a porous body having holes between the two mounts so as to be arranged in the opening and the surrounding area;
The thermoplastic resin is caused to flow by applying heat and pressure while the sheet member is sandwiched between the two mounts, and the thermoplastic resin is filled in the holes or gaps of the sheet member. A method for producing a medium container, comprising: bonding the two mounts together. Preparing two paper mounts;
Forming an opening in at least one of the two mounts;
Applying an adhesive to at least one of the surfaces of the two mounts to be bonded;
Sandwiching a sheet member composed of an assembly having a gap between the aggregates or a porous body having holes between the two mounts so as to be arranged in the opening and the surrounding area;
While the sheet member is sandwiched between the two mounts, the adhesive is caused to flow by applying pressure, the hole or gap of the sheet member is filled with the adhesive, and the adhesive is used to fill the two sheets. A method for producing a medium container, wherein a backing sheet is laminated. Preparing two paper mounts;
Forming an opening in at least one of the two mounts;
Applying an adhesive or a thermoplastic resin to a sheet member made of a porous body having pores or an aggregate having a gap between the aggregates;
Sandwiching the sheet member between the two mounts so as to be disposed in the opening and the surrounding area; and
With the sheet member sandwiched between the two mounts, the adhesive is caused to flow by applying pressure, or the thermoplastic resin is caused to flow by applying heat and pressure, so that the holes or gaps in the sheet member are flown. A method for producing a container for a culture medium, comprising filling the adhesive or the thermoplastic resin and bonding the two mounts together with the adhesive or the thermoplastic resin. The method for producing a culture medium container according to any one of claims 1 to 3, wherein the two mounts and the sheet member are continuously supplied from a roll-shaped raw material. 5. The method according to claim 1, further comprising a step of forming a recess in the opening and an outer peripheral region thereof by drawing after pasting the two mounts with the sheet member interposed therebetween. Method for producing a medium container. The culture medium according to any one of claims 1 to 4, further comprising a step of forming ribs around the opening by drawing after the two sheets of paper are pasted together with the sheet member interposed therebetween. Manufacturing method for container. 7. The method according to claim 1, further comprising a step of forming a leg portion by bending an edge portion of the two mounts downward after the two mounts are bonded to each other with the sheet member interposed therebetween. The manufacturing method of the container for culture media as described in a term. The manufacturing method of the container for culture media as described in any one of Claims 1-7 which uses a biomass plastic film as at least one mount among the said 2 mounts. The manufacturing method of the container for culture media as described in any one of Claims 1-8 which uses biomass plastic as said thermoplastic resin. 10. The method according to claim 1, further comprising a step of forming a discontinuous cut along a peripheral edge of the opening in a portion arranged in the opening in the sheet material. A method for producing a medium container. Preparing a pair of paper mounts having an opening in one of at least two sheets;
Sandwiching a sheet member composed of an assembly or a porous body having a gap between the assemblies between the pair of mounts;
The hole or gap of the sheet member is filled with a filling member in a region other than the opening, and the pair of mounts are bonded together to form a dish-shaped depression from the opening and the other mount of one mount. A process,
A simple test tool characterized in that a region not filled with the filling member is formed so as to be surrounded by the mount and the filling member and the region where the sheet member is arranged is coupled to the dish-shaped depression. Manufacturing method. A pair of paper mounts having an opening in at least one of the two sheets;
A cellulose sheet member comprising a porous body sandwiched between the pair of mounts or an aggregate having a gap between the aggregates;
In order to form a dish-like depression for storing cultures from the opening of one mount and the other mount, the hole or gap of the sheet member is filled in a region other than the opening, and the pair of mounts are bonded together A medium paper container. 13. The culture paper container according to claim 12, wherein the mount around the opening is compressed. 14. The culture paper container according to claim 12, wherein a film is formed on a side wall of the opening. A sheet member comprising a paper upper mount having an opening and a transparent biomass plastic film lower mount having a porous body or an assembly having a gap between the aggregates, and at least the opening between the two mounts. In a state of being sandwiched so as to be disposed in the surrounding area, it is bonded with an adhesive or a thermoplastic resin, and in the area other than the opening, the hole or gap of the sheet member is the adhesive or the thermoplastic resin. A medium container, which is filled with The medium container according to claim 15, wherein the lower mount has a dish-shaped molding portion at a portion facing the opening. The medium-use medium according to any one of claims 12 to 16, wherein a discontinuous cut is formed along a peripheral edge of the opening at a portion arranged in the opening in the sheet material. container. A transparent biomass plastic film upper mount having a dish-shaped molded portion, and a paper lower mount having an opening corresponding to the dish-shaped molded portion and bonded to the upper mount by an adhesive or a thermoplastic resin; A culture medium container comprising a porous member or an assembly having a gap between the assemblies and a sheet member placed on the dish-shaped molding portion. The culture medium container according to any one of claims 15 to 18 , wherein the thermoplastic resin is biomass plastic. The medium container according to any one of claims 15 to 19 , further comprising a leg portion formed by bending the edge portion downward at an edge portion of the two mounts.

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