JP6577739B2 - Packaging bag for secondary packaging for transporting infectious substances - Google Patents

Description

  The present invention relates to a packaging bag for secondary packaging for safely packaging and transporting a container containing an infectious substance such as a pathogen (sometimes referred to as “specimen”).

  As a packaging bag for secondary packaging that transports (air transport) infectious substances, the invention of a packaging bag according to the same applicant as the present invention is recognized as a patent and is known.

  The patented invention of this well-known example is a transport container for transporting infectious substances in primary packaging, secondary packaging and tertiary packaging, and is a packaging bag for secondary packaging in the transporting container. The packaging bag is formed by overlapping a surface material and a back material made of a plastic sheet or film, excluding the upper surface as an opening, and heat-sealing both side surfaces and the bottom in a series to form a bag body, A partition material of the required size made of a plastic sheet or film is placed inside the upper surface of the surface material and the back material, respectively, and the upper surface and both side surfaces are heat sealed to attach the partition material to the surface material and the back material, respectively. Forming a pocket portion, and providing a sealing material to be adhered by an adhesive means so that the opening portion does not open on the upper outer side of the back surface material, and when the internal pressure of the packaging bag rises, surface contact between the partition materials Is maintained It is characterized in that it has a configuration for receiving the internal pressure in either serial pockets (see Patent Document 1).

  This packaging bag for secondary packaging is provided on the opening side even when the internal pressure of the packaging bag becomes a pressure of 95 kPa or more, which is regulated by the Infectious Disease Law, etc. due to the influence of the outside air temperature during transportation. Since it is received by the pocket portion, the opening, that is, the entrance / exit, is not opened, and the heat seal portion of the packaging bag is not peeled off, so that the infectious substance can be transported safely.

  In the patented invention relating to this well-known example, a plastic bag (pouch / pouch) related to a well-known secondary packaging container is formed by superposing two plastic sheets, and the upper, lower, left and right edges are heat-sealed. For example, it can be opened and closed by forming a slot in the vicinity of the upper end of the plastic sheet on one side so as not to reach both sides, and forming a slot and attaching a fastener inside the slot. Thus, the fastener has a problem that it is composed of a convex engagement piece made of resin and a concave engagement piece, that is, a plastic sheet on one surface is cut in a range that does not reach both sides. It is provided with a loading / unloading opening, and a plastic fastener is attached to the inside of the opening. In the actual use, the entrance / exit is maintained in a sealed state by the engagement force of the convex and concave engagement pieces of the resin fastener and the adhesive force of the single-sided adhesive tape. However, when the internal air expands due to temperature changes and the internal pressure reaches the standard pressure of 95 kPa or more, the pressure acts directly on the adhesive tape through the fastener, and the plastic sheet is entirely covered by the expansion of the pouch. The adhesive tape is peeled off due to the direct pressure action and elongation action, and then the fastener engagement piece is released and the entrance / exit is opened. This solves the problem that it becomes impossible to withstand the pressure difference set by the prescribed standard.

Japanese Patent No. 4590024

  The packaging bag for secondary packaging according to the patented invention of the well-known example is a secondary packaging bag for the prevention of medical infectious diseases, which has been completed by conducting a test for gas. Since the liquid contents are sealed in the primary packaging container, a large amount of liquid does not enter the secondary packaging bag. Therefore, in the packaging bag for the known secondary packaging, even if the container for transporting the primary packaging is liquid content, even if it cannot withstand the temperature change and part of the content leaks, In actual use, the leaked contents are held in a packaging bag for secondary packaging so as not to leak outside.

However, in the test methods in Europe and the United States, the current state is that only the internal pressure test is performed without increasing the temperature change and injecting liquid (water) at room temperature with a pump and injecting it into the packaging bag. And it tests using the test method also about the packaging bag for secondary packaging which concerns on the patent invention of the said well-known example. In the case of the test method, when water is injected in a state where the both sides of the opening of the bag body are held and supported at a height of about 50 to 100 cm, the load is applied and the bottom of the central portion of the bag is lowered and the sealing material is closed. Since there is no, the center part of the partition material which has the check valve function provided inside the opening part also falls. The partition materials do not leak if the internal pressure is applied in an overlapping (blocking) state, but if an irregular load or pressure is applied with the bag body distorted, there is a gap between the surface material and the back surface material of the partition material. If a load or internal pressure is applied or the bag is dropped in that state, a very small amount of water leaks.
In Europe and the United States where such an experiment is conducted, the secondary packaging bag according to the patented invention of the known example has been evaluated as unfavorable, and there has been a problem that its use in the industry is actually limited. ing.

  The main purpose of the present invention is that the entrance / exit of the package is not opened even when the internal pressure of the standard prescribed in the Infectious Disease Law becomes 95 kPa or more, and the pressure resistance experiment of Western style with the bag body distorted It is intended to provide a packaging bag for secondary packaging that does not leak gas or a small amount of liquid even if it is performed.

The present invention is a transport container for transporting infectious substances in primary packaging, secondary packaging and tertiary packaging as a specific means for solving the above-mentioned problems, and for secondary packaging in the transport container. As a packaging bag, a surface material and a back material made of plastic sheet or film are overlapped with a partition material of a required size made of a homogeneous material on the upper surface side that becomes an opening, respectively, along the edge on the upper surface side, respectively. Heat seal to the required width to make a front side partition material and a back side partition material, and superimpose the surface material and the back surface material together with the both partition materials, and the side surfaces and the bottom surface in a series except the top opening a packaging bag for a secondary package which heat-sealed to form a bag shape, as the material of the package, integrally laminated with one of polyethylene and / or wax den polyethylene on both sides of nylon as the core material 3-layer or thickness at four-layer structure is used a sheet or film of 120～170Myuemu, heat seal strength of a series of heat sealing the sides and bottom of the package is generally the 70～120N, in the partition member A zipper (registered trademark) is provided between the partition members so that the front-side partition member and the back-side partition member are not separated by internal pressure or deformation of the bag body, and the portion where the zipper (registered trademark) is located Packaging for secondary packaging, characterized in that a step seal portion is eliminated at both side edge portions of the bag body and a point seal portion having a heat seal strength of 90 N or more is provided in order to strengthen the vicinity of the top and bottom of the zipper end portion. Provide a bag.

  In the present invention, the width of the zipper (registered trademark) is 4 ± 2 mm; and a pocket portion is formed to put a piece of paper describing the contents on either the front surface side or the back surface side of the packaging bag; Is included as an additional requirement.

According to the packaging bag for secondary packaging according to the present invention, as a packaging material, a three-layer or four-layer structure in which nylon is used as a core and polyethylene and / or lowden polyethylene is integrally laminated on both sides. Because a sheet or film having a thickness of 120 to 170 μm is used, and the heat seal strength of a series of heat seals on both sides and bottom of the package is generally 70 to 120 N, there is little elongation and it is tough and flexible It has excellent low-temperature sealing properties, and a zipper (registered trademark) is provided between the partition materials so that the partition material on the front surface side and the partition material on the back surface side are not separated by internal pressure or deformation of the bag body. Po heat seal strength is not less than 90N in order to strengthen the upper and lower near the zipper end with) is eliminated stepped portion in the sealing portion of the side edges of the bag body portion located By providing the Ntoshiru portion, or takes irregular load or pressure in a state distorted bag, by the withstand voltage test method in the West, with small water droplets not gas but also does not leak, the outside air during transport Even when the internal pressure of the packaging bag exceeds the standard value of 95 kPa regulated by the Infectious Disease Law due to the influence of temperature, the opening, that is, the entrance / exit is kept closed by the zipper (registered trademark). In addition, since the heat-sealed portion of the packaging bag does not peel off, an excellent effect that the infectious substance can be safely transported is achieved.

Furthermore, since the opening provided on the upper surface of the packaging bag can be fully opened, not only can the work and handling of infectious substances and the like be taken in and out, but in particular, the sheet or film material of the partition material Is designed to withstand the internal pressure by forming a pocket-shaped part with a strong (approximately 70 to 120 N) heat seal strength against the surface material and the back surface material. By closing the zipper (registered trademark), the blocking action is achieved. There is also an excellent effect of significantly improving.

It is the top view which showed the packaging bag for secondary packaging which concerns on embodiment of this invention. It is the perspective view which isolate | separated and showed the surface material and back material which are the structural members of the packaging bag based on the embodiment. In order to understand the structure of the packaging bag according to the embodiment, the front surface material and the back surface material are separated from each other and the main part is enlarged and schematically shown, wherein (a) is an enlarged side surface of the surface material FIG. 4B is an enlarged side view of the back material. It is explanatory drawing which showed schematically the packaging form of the infectious substance accommodated in the packaging bag which concerns on the embodiment. It is a perspective view of the principal part which shows the condition which accommodates the packaged infectious substance in the packaging bag which concerns on the embodiment. It is a top view of the state which accommodated the packaged infectious substance in the packaging bag which concerns on the embodiment. It is sectional drawing which follows the AA line of FIG. In the packaging state of FIG. 7, it is explanatory drawing which showed schematically the state which the internal air of the packaging bag expanded by external temperature, and the internal pressure rose.

  The present invention will be described based on the illustrated embodiment. First, in FIGS. 1 to 3, a packaging bag 1 for secondary packaging according to the present invention has two rectangular shapes having a required thickness (flexibility) and a certain degree of rigidity and a certain degree of rigidity. A front-side partition material 4 made of a substantially homogeneous material at a position of an opening as a bag in the front-surface material 2 and the back-surface material 3, comprising a surface material 2 and a back-surface material 3 made of a plastic sheet or film; The partition material 5 on the back surface side is integrally attached to form a pocket-like portion which will be described later, and the width of the width of 4 ± 2 mm and the length of the partition materials 4 and 5 are formed on the opposing surfaces of the partition materials 4 and 5. A concavo-convex fitting or engagement type fastener, that is, zipper (registered trademark) 6, 7 having a length in the direction (approximately the width of the bag body), sealed with heat sealing means 8, 9 and attached integrally. Is. Further, the back material 3 is provided with an extension part of a required length to form a sealing part 3a.

  Furthermore, with respect to the attachment of the partition members 4 and 5 to the surface material 2 and the back surface material 3, the surface material 2 is integrated with the sealing portion 10 having a required width along the upper edge portion serving as an opening. Attached to the back material 3 is integrally attached to a position that becomes an opening as a bag body at the boundary with the extended portion 3a (referred to as a sealing portion) by a seal portion 11 having a required width by heat sealing means. . The width of these seal portions 10 and 11 is about 10 to 12 mm. Moreover, although the thickness of the plastic sheet or film used for the surface material 2, the back surface material 3, and the partition materials 4 and 5 changes with the magnitude | sizes of the packaging bag 1, it is set as the range of about 130 +/- 50micrometer. Moreover, the thickness of the partition members 4 and 5 is also substantially the same.

  The material formed in this way, that is, the front surface material 2 and the back surface material 3, with the partition materials 4 and 5 facing each other, and zipper (registered trademark) 6 and 7 fitted together, the partition material 4, In a state where the five are accurately aligned and overlapped, three side edges of both side surfaces and the bottom surface are formed on the packaging bag 1 by the seal portions 12, 13, and 14 by the heat sealing means. In this case, the front surface material 2 and the back surface material 3 align the bottom end portion serving as the bottom portion, align the seal portions 10 and 11 serving as the opening portions 15 and accurately overlap each other, and thereby seal the seal portion 12. , 13, and 14, the packaging bag 1 shown in FIG. 1 is formed, and the partition members 4 and 5 are provided with the zipper (registered trademark) 6 and 7, thereby Therefore, the storage portion as a bag can be used about 20% wider than before. Moreover, the pocket part 24 with the lid | cover 23 which puts the paper piece which described the content of the packaged object with the said seal part formation in either the surface side or the back surface side of the packaging bag 1 is formed with a transparent film material. It is.

  The seal strength of the seal portions 10 to 14 is approximately 70 to 120 N, and a step portion due to the thickness is generated at the lower end side of the partition members 4 and 5 and the portions where the zippers (registered trademark) 6 and 7 are located. In order to prevent the occurrence of insufficient strength itself, those portions and the vicinity thereof are made stronger than the point seals 16 and 17 to 90 N or more. Further, the sealing part 3a is provided with a sealing adhesive part 18 provided with a release paper, and after the infectious substance which is an object to be packaged is stored inside the packaging bag 1, the opening part 15 of the packaging bag 1 is opened over the entire surface. It is folded so as to cover, and the adhesive part 18 is stuck on the surface material 2 so as to prevent the opening 15 from being opened.

  As shown in FIG. 4, the infectious substance stored in the packaging bag 1 for secondary packaging according to the present invention is stored in the packaging bag 1 as a primary package 19. The package 19 of the primary packaging is, for example, an infectious substance placed in a test tube 20 or the like and sealed with a lid member 21, and the whole is safely packaged with a packaging material 22 having cushioning properties and liquid absorption properties. The primary packaging is performed by almost the same means as in the conventional example.

  As shown in FIG. 5, the package 19 of the infectious substance primarily packaged in this way opens the opening 15 of the packaging bag 1 and releases or fits the zipper (registered trademark) 6 and 7. When the package 19 is stored from the opening 15 with a margin, as shown in FIG. The zipper (registered trademark) 6 and 7 is fitted or engaged with the air in the packaging bag 1 being excluded to some extent, and then the sealing portion 3a is folded to the surface material 2 side to protect or peel off The secondary packaging is completed as shown in FIG. 7 by peeling the paper and adhering the adhesive portion 18 to the surface material 2 so as to prevent or fix the opening portion 15 so as not to open. The infectious substance that is secondarily packaged is housed and transported in a third packaging container (exterior container) having a required strength, as in the conventional example.

  Therefore, changes in the outside air temperature during transportation, in particular, the outside air temperature rises in the tropics, the air in the packaging bag 1 of the secondary packaging expands, and the internal pressure is a pressure that exceeds the reference value of 95 kPa prescribed by the Infectious Disease Law. The situation which became will be described with reference to FIG.

  When the air in the packaging bag 1 expands, the entire packaging bag 1 swells, and the side surface on which the seal portions 12 and 13 are formed approaches the inside as a whole. Since the partition members 4 and 5 provided on the inner side by the approach are fitted or engaged with the zipper (registered trademark) 6 and 7, either the front surface material 2 or the back surface material 3 is maintained. The seal portion 3a is deformed while being in surface contact with the sealing portion 3a, and the inner pressure is hardly affected, and the opening / closing port, that is, the action of pushing the opening 15 does not work. The increased internal pressure in 1 is inevitably received by, for example, the pocket-shaped portion 4a on the partition member 4 side, and the adhesive force of each heat seal portion is strong, so there is no risk of bursting as the packaging bag 1. In addition, although not shown in figure, the pocket-shaped part 5a also exists in the partition material 5 side, and the internal pressure is received by either similarly to the said pocket-shaped part 4a.

Further, even when a pressure test method in Europe and the United States, that is, when a required amount of water is dropped into the packaging bag 1 and dropped, a zipper (between the front side partition material 4 and the rear side partition material 5 ( Since the partition members 4 and 5 are tightly closed in a sealed state by fitting or engagement of the registered trademarks 6 and 7, the impact due to dropping and the scattered water are caused by the surface material 2 and the back surface material 3. Since the pressure that acts to open between the partition members 4 and 5 that are in a sealed state due to the impact of dropping is not physically generated, opening between the partition members 4 and 5 is not possible. There is absolutely no concern that gas due to pressure or scattered water droplets will leak outside through the gaps between the partition members 4 and 5.
Therefore, even if it is subjected to a pressure test method in Europe and the United States, it does not leak any gas or liquid, so it is a pass product.

  Regarding the plastic sheet or film used in the present invention, “Sealant PE Film” manufactured by Tamapoli Co., Ltd., product names “SB-5”, “SB-7”, and “SB-10” are preferable. These products have a three-layer or four-layer structure in which either polyethylene and / or lowden polyethylene are integrally laminated on both sides with nylon as a core material, and the thickness can be used in the range of 120 to 170 μm. It has little elongation, is tough and flexible, and has excellent low-temperature sealing properties. For example, PPC25 / PET12 / NY15 to 25 / LLDPE 70 μm is preferable as the material used for the front surface material 2 and the back surface material 3 of the standard A-4 size packaging bag 1, and the partition materials 4, 5 include LLDPE70 / PRT25 / LLDPE of 70 μm can be used and can withstand temperatures of approximately −40 to + 55 ° C., but in the case of the size of the packaging bag 1, for example, B-4 size or Excel size, the thickness may be further increased. is there.

  Thus, by selecting the material to be used, the characteristics as the packaging bag 1, in particular, the partition materials 4 and 5 have a three-layer structure, but the present invention is not limited to this. It is possible to make a layer structure. In short, a plurality of structures, and the bag body is tough and reduces the elongation rate. Further, the heat seal strength is high and does not peel off, and the opening 15 is formed by temperature change. For example, the partition members 4 and 5 are maintained in a sealed state by the zipper (registered trademark) 6 and 7 so as not to open.

  The packaging bag for secondary packaging according to the present invention is a packaging bag for secondary packaging used for transporting infectious substances, on the inner side forming the opening portion by the surface material and the back material constituting the bag body, Each partition is provided with a zipper (registered trademark) between the partitions to maintain high sealing performance, so that the pressure resistance test in Europe and the United States can be completely cleared, and prescribed by the Infectious Disease Law, etc. Even if the standard internal pressure becomes 95 kPa or more, the inlet / outlet is not opened and can be safely transported. In particular, infectious substances are sent to areas or regions where temperature changes are particularly severe. It can be widely used for air transportation.

1 Packaging bag for secondary packaging
2 Surface material 3 Back material 3a Sealing portion 4, 5 Partition material 4a, 5a Pocket-shaped portion 6, 7 Zipper (registered trademark)
8, 9 Seal 10, 11, 12, 13, 14 Seal part 15 Opening part (in / out port)
16, 17 Point seal 18 Adhesive means with release paper 19 Package 20 Test tube 21 Lid member 22 Packaging material 23 Lid 24 Pocket part

Claims (3)

A transport container for transporting infectious substances in primary packaging, secondary packaging, and tertiary packaging, and as a packaging bag for secondary packaging in the transport container, a surface material made of a plastic sheet or film; A partition material of the required size made of the same material is overlapped with the back surface material on the upper surface side, which is the opening, and heat sealed to the required width along the edge on the upper surface side, respectively, and the front surface side partition material and back surface For the secondary packaging that is formed into a bag shape by overlapping the surface material and the back surface material together with the both partition materials, and heat-sealing both side surfaces and the bottom surface in series except for the opening on the top surface. A packaging bag,
As a material of the package, a sheet or film having a three-layer or four-layer structure in which nylon is used as a core material and either polyethylene and / or lowden polyethylene are integrally laminated on both sides and a thickness of 120 to 170 μm is used. ,
The heat seal strength of a series of heat seals on both side surfaces and the bottom surface of the package is approximately 70 to 120 N ,
While providing a zipper (registered trademark) between the partition members so that the partition member on the front surface side and the partition member on the back surface side in the partition member are not separated by internal pressure or deformation of the bag body,
A point seal portion with a heat seal strength of 90 N or more is provided in order to eliminate a step portion in the seal portion at both side edge portions of the bag body where the zipper (registered trademark) is located and to strengthen the upper and lower vicinity of the zipper end portion. A packaging bag for secondary packaging, characterized by that . The packaging bag for secondary packaging according to claim 1, wherein the width of the zipper (registered trademark) is 4 ± 2 mm. The packaging bag for secondary packaging according to claim 1 or 2, wherein a pocket portion into which a piece of paper describing the contents is placed is formed on either the front surface side or the back surface side of the packaging bag.

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