JP4365835B2 - Electron beam irradiation device for open containers - Google Patents

Description

  The present invention relates to an electron beam irradiation apparatus for an opening container, and more particularly to an electron beam irradiation apparatus for an opening container suitable for sterilizing the inner and outer surfaces of a plastic opening container.

  Recently, many plastic open containers are used for filling beverages, foods, medicines, and cosmetics. These open containers are sterilized by sterilizing the inside before filling the contents, and then the contents are filled and sealed. As for the sterilization treatment of the open container, it has been proposed to use an electron beam instead of using a chemical that requires a large amount of equipment to sterilize the inner and outer surfaces of the open container that is conveyed at high speed.

  For example, an opening container made of plastic, such as a PET bottle, is irradiated up to an irradiation area where the electron beam generating means irradiates the electron beam by the conveying means so that the central axis thereof is orthogonal to the conveying direction, that is, in a state where the opening container is laid down It is conveyed so that the opening container moves while rotating by another conveying means provided with the floor inclined, and the opening container is rotated while passing through the irradiation space of the electron beam generating means, thereby opening the opening container. An electron beam irradiation apparatus that irradiates an electron beam to all of the outer surface and inner surface of a container and efficiently sterilizes is proposed (see Patent Document 1).

  As another example, the electron beam generating means is arranged in a vertically long shape, and the sterilization chamber is constituted by a radiopaque material over the required length range including the electron beam irradiation window of the electron beam generating means. The container to be processed is transported in a standing posture from the inlet portion to the outlet portion of the sterilization chamber by the container transport means, and further provided with a rotation imparting means, and the opening container has an electron beam irradiation window of the electron beam generating means. There has been proposed an electron beam irradiation apparatus that gives rotation until it finishes passing from the position immediately before reaching to increase the sterilization effect of the open container while reducing the size (see Patent Document 2).

  Furthermore, in order to be able to sterilize the inner surface of the container conveyed into the sterilization treatment chamber in an upright state by the conveying means by electron beam irradiation, the low energy electron beam from the electron beam irradiation apparatus is Can be sterilized on the inner surface of a large number of containers with a single electron beam irradiation means, and the entire apparatus can be miniaturized. A container sterilization method and apparatus have also been proposed (see Patent Document 3).

Japanese Patent Laid-Open No. 10-268100 Japanese Patent Laid-Open No. 11-1212 JP 2002-104334 A

  In the electron beam irradiation apparatus of the above-mentioned Patent Document 1, the open container that is being conveyed in an upright state is temporarily laid down, and irradiation treatment is performed in the state of being laid down. In addition, it is necessary to use a sideways mechanism or pull-up mechanism, and because of these mechanisms, the speed of transporting the open container is significantly reduced, so it is difficult to incorporate the open container into a production line where it is desired to improve the production efficiency by transporting the open container at high speed. There is.

  Moreover, in the electron beam irradiation apparatus of patent document 2, although it can incorporate in the production line of various products, in the process which passes the electron beam irradiation window part of one place of an electron beam generation means during continuous conveyance of an opening container. Since each open container is sterilized by irradiating it from the side with an electron beam, to sufficiently sterilize the inner and outer surfaces of the open container, the transport speed is slowed down or a high-energy electron beam is used. There is a problem that the generation means must be used.

  Furthermore, the electron beam irradiation apparatus of Patent Document 3 is complicated because it is necessary to branch a large number of radial nozzles in one electron beam irradiation means for irradiation treatment of each open container that is continuously conveyed on the production line. It becomes a structure, and in order to sufficiently irradiate the inside of the open container with an electron beam, it is necessary to reduce the conveyance speed, which causes a problem that hinders the improvement of the efficiency of the production line.

  It is an object of the present invention to incorporate an opening container with an electron beam in an irradiation processing section that can be incorporated into a production line that conveys the opening container at high speed and that maintains a negative pressure by using a low energy electron beam generating means. An object of the present invention is to provide an electron beam irradiation apparatus for an open container that can be sterilized.

  Another object of the present invention is to appropriately arrange a plurality of electron beam generating means so that the inner and outer surfaces of each open container that is being conveyed at a high speed that is substantially the same as that of the production line are used as the electron beam of each electron beam generating means. It is another object of the present invention to provide an electron beam irradiation apparatus for an open container that can be sterilized appropriately.

  The electron beam irradiation apparatus for an open container of the present invention is provided with a front pressure adjustment tank and a rear pressure adjustment tank integrally connected to a side surface portion of an irradiation processing tank that includes a decompression means and maintains a negative pressure state, Each rotary carrier is rotatably arranged in the tank, and a plurality of holding mechanisms are provided on the outer surface of each rotary carrier to hold the open containers at substantially equal intervals, and from the front pressure adjustment tank side to the rear pressure adjustment tank side It is possible to pass the opening container between the rotary transport bodies in order, and a partition wall is provided in the rotary transport body in the front pressure adjustment tank and the rear pressure adjustment tank so as to separate each holding mechanism and rotate. A plurality of small sections are formed by each of the partition walls and the tank wall surface when the carrier is moved, and the range from the opening container loading side to the irradiation processing tank side in the front pressure adjusting tank and the irradiation of the opening container in the rear pressure adjusting tank Reduce the small section in the range from the processing tank side to the unloading side Comprising a decompression means for, characterized in that at least one electron beam irradiation means is constructed by arranging the irradiation treatment tank.

  Further, the electron beam irradiation apparatus for an open container of the present invention is provided with a front pressure adjustment tank and a rear pressure adjustment tank integrally connected to a side surface portion of an irradiation treatment tank that is provided with a decompression means and maintains a negative pressure state, A rotary transport body is rotatably arranged in each tank, and a plurality of holding mechanisms are provided on the outer surface of the respective rotary transport bodies to hold the open containers at substantially equal intervals, and the rear pressure is adjusted from the front pressure adjustment tank side. The open containers can be sequentially transferred between the rotary transport bodies to the tank side, and a partition wall is provided so as to separate the holding mechanisms on the rotary transport bodies in the front pressure adjustment tank and the rear pressure adjustment tank. A plurality of small sections are formed by each of the partition walls and the tank wall surface during the movement of the rotary carrier, and the range from the opening container loading side to the irradiation treatment tank side in the front pressure adjusting tank and the opening container in the rear pressure adjusting tank The small area in the range from the irradiation tank side to the unloading side Comprising a decompression means for decompressing the, characterized in that a plurality of electron beam irradiation means is constructed by arranging a position along the conveying arc of opening the container of the irradiation treatment tank.

  Preferably, the irradiation treatment tank has a diameter larger than that of the front pressure adjustment tank and the rear pressure adjustment tank, and a plurality of electron beam irradiation means are arranged above the irradiation treatment tank. Features.

  Preferably, in the irradiation treatment tank serving as an electron beam irradiation chamber for electron beams, the position is opposed to each of the electron beam irradiation means, and at a different position in the height direction of the opening container that irradiates the electron beam. The electron beam deflecting means for deflecting each electron beam is arranged and configured.

  More preferably, the plurality of electron beam deflecting means are arranged and configured such that the deflection direction of the electron beam is bent in the circumferential directions having different angles with respect to the central axis of the opening container.

  Still more preferably, the plurality of holding mechanism portions provided on the rotary conveyance body in the irradiation treatment tank are each provided with a rotation mechanism for rotating the open container with a rotational driving force accompanying the movement of the rotary conveyance body. And

  If the electron beam irradiation apparatus for an open container is configured as in the present invention, since the irradiation process is performed in the irradiation processing section maintaining a negative pressure, a low energy electron beam generating means can be used, and the open container is effectively used. It can be sterilized with an electron beam. Moreover, since the opening container is held vertically by the holding mechanism and can be sterilized with an electron beam during high-speed transport, it can be used by being incorporated in a production line.

  Further, if the electron beam irradiation apparatus for an open container is configured as in the present invention, a plurality of electron beam generating means are arranged at positions along the transfer arc of the irradiation processing tank, so that they can be transferred at high speed in substantially the same manner as the production line. The sterilization treatment with the electron beam on the inner and outer surfaces of each open container can be performed more effectively.

  Further, if the electron beam irradiation apparatus for an open container is configured as in the present invention, the open container is rotated and transported while being in an upright state similar to the front and rear process lines, so the transport mechanism portion of the open container rotates. Because it has a structure, it does not apply excessive force to the transport mechanism, it has very little wear, it can be used for a long time, and there is no risk of dust adhering to the open container, so it is suitable for use in production lines such as beverages. is there.

  In the electron beam irradiation apparatus for an open container of the present invention, a front pressure adjusting tank and a rear pressure adjusting tank are integrally coupled to a side surface portion of an irradiation processing tank that includes a decompression unit and maintains a negative pressure state. In each of these tanks, a rotary carrier is rotatably arranged, and a plurality of holding mechanisms are provided on the outer surface of each rotary carrier to hold the open containers at substantially equal intervals, and the rear pressure is adjusted from the front pressure adjustment tank side. The open containers can be sequentially transferred between the rotary conveyance bodies to the tank side. In addition, a partition is provided on the rotary transport body in the front pressure control tank and the rear pressure control tank so as to separate each holding mechanism, and when the rotary transport body moves, each partition and the wall of the tank have a plurality of small sections. Let it form. A pressure reducing means for depressurizing the small section in the range from the side of the opening container to the irradiation treatment tank in the front pressure adjustment tank and the range from the irradiation treatment tank side of the opening container in the rear pressure adjustment tank to the unloading side; At least one electron beam irradiation means is arranged in the irradiation treatment tank.

  The principle of the electron beam irradiation apparatus for an open container of the present invention is shown in FIG. 1 (a), and a plastic bottle is used as the open container. A front pressure adjusting tank 20 and a rear pressure adjusting tank 30 are disposed adjacent to the side surface of the irradiation processing tank 10 disposed in the center and are integrally connected. In each of these tanks 10, 20, and 30, rotationally transporting bodies 11, 21, and 31 that are rotated in synchronization with a drive mechanism as indicated by arrows are rotatably arranged. An annular conveyance path for sequentially conveying the open container 1 is formed. Therefore, in the production line of the open container 1, the pre-pressure adjusting tank 20 connected to the pre-processing line, the irradiation processing tank 10, and finally the post-pressure adjusting tank 30 connected to the post-processing line are sequentially arranged. .

  Each of the rotary transport bodies 11, 21, 31 is provided with a large number of holding mechanisms 2 that hold and transport the open container 1 on the outer surface at equal intervals. It is set as the structure which can be smoothly delivered in order with the open container 1 in the upright state between the rotation conveyance bodies 11, 21, and 31 in each tank 10, 20, and 30 until a processing line.

  The inside of the irradiation processing tank 10 is configured to have a pressure-resistant sealed structure for reducing the pressure inside, and a pipe 14 connected to an exhaust means including a vacuum evacuation device 13 is connected to the irradiation processing tank 10 to surround the open container 1 to be conveyed. The atmosphere is maintained at a predetermined negative pressure state. In addition, at least one electron beam generating means 40 for electron beams connected to a power source is provided in a portion corresponding to the transfer path serving as an electron beam irradiation chamber in the irradiation processing tank 10. Using this electron beam generating means 40, the irradiation container 10 is maintained in a negative pressure state, irradiated with an electron beam toward a transfer path serving as an electron beam irradiation chamber, and the transferred open container 1 is continuously provided. Sterilization treatment.

  Since the electron beam generating means 40 is sterilized by irradiating the inner and outer surfaces of the open container 1 with an electron beam in a negative pressure atmosphere, an electron beam generating means 40 having an acceleration voltage of 150 kV or less with low energy can be used. If the inside of the irradiation processing tank 10 is in a decompressed state, the attenuation of the electron beam is greatly reduced, so even with a low-energy electron beam, the electron range (flight distance) becomes long, and the electron The amount of divergence of the line is small, and even the narrow open container 1 can effectively irradiate the inner surface with an electron beam.

  In order to effectively maintain the negative pressure state in the irradiation processing tank 10 so that the irradiation of the electron beam can be performed satisfactorily, it is connected to the pretreatment line side which is the opening container carry-in and the post-treatment line which is the carry-out side. The front pressure adjustment tank 20 and the rear pressure adjustment tank 30 are specially devised by the present invention. That is, partition walls 3 for separating the holding mechanisms 2 are provided on the rotary transport bodies 21 and 31 in the front pressure adjustment tank 20 and the rear pressure adjustment tank 30, respectively. Sometimes, a plurality of small compartments 22 and 32 are formed between the partition walls 3 on both sides of each holding mechanism 2 and the tank wall surface.

  Moreover, in order to depressurize the plurality of small sections 22 existing in the range where the open container 1 is moved from the position where the open container 1 is taken from the previous process line to the irradiation processing tank 10 on the side of the front pressure adjusting tank 20, a vacuum is applied to the wall surface in this range. A plurality of pipes 24 connected to the exhaust means including the exhaust device 23 are connected. As a result, the small section 22 in the range from the opening container 1 being carried into the front pressure adjustment tank 20 from the previous process line to the irradiation treatment tank 10 is a pressure adjustment range in which the state is from atmospheric pressure to a desired negative pressure. It can be managed effectively.

  Further, on the side of the rear pressure adjusting tank 30, in order to depressurize the small section 32 formed in the range in which the opening container 1 is moved from the irradiation processing tank 10 to the position of the post-process line, the vacuum exhaust is similarly applied to the wall surface in this range. A plurality of pipes 34 connected to the exhaust means including the device 33 are connected. For this reason, the small section 32 in the range from the irradiation processing tank 10 to the post-process line of the post-pressure adjusting tank 30 until the open container 1 is carried out is reversely adjusted to a state from a desired negative pressure to an atmospheric pressure. It can be managed effectively as a range.

  The plurality of pipes 24 and 34 can be effectively decompressed by increasing the pipe diameter as they are closer to the irradiation treatment tank 10 or by increasing the number of pipes to be connected. The pressure change in the front pressure adjustment tank 20 and the rear pressure adjustment tank 30 can be smoothly performed. In addition, the range in which the small section 32 of the front pressure adjusting tank 20 or the rear pressure adjusting tank 30 is depressurized is opposite to the above as necessary, that is, in the front pressure adjusting tank 20, from the irradiation processing tank 10 to the front process line. Both the small section 32 in the moving range and the small section 32 in the range moving from the irradiation processing tank 10 to the post-process line in the rear pressure adjusting tank 30 can be decompressed by providing an exhaust means.

  Each partition 3 for forming the small sections 22 and 32 is provided so as to have a minute gap G between the outer walls of the tanks 20 and 30 as shown in FIG. A plurality of the partition walls 3 exist in each range from the irradiation treatment tank 10 to the front pressure adjustment tank 20 and the rear pressure adjustment tank 30 on the air release side. For this reason, the plurality of partition walls 3 have the same function as the labyrinth seal structure, and the flow resistance from the irradiation treatment tank 10 to the outside of the atmospheric pressure increases, so that the irradiation treatment can be performed without using a special seal or the like. The negative pressure state of the tank 10 can be maintained. As a matter of course, the capacity of the vacuum evacuation device 13 of the exhaust means provided in the irradiation processing tank 10 is set to allow for the amount of leakage, thereby maintaining the inside of the irradiation processing tank 10 within a predetermined negative pressure range. be able to.

  Moreover, the piping 16 from the clean air generator 15 provided with an appropriate filter is connected to the irradiation processing tank 10, the pre-pressure adjusting tank 20, and the post-pressure adjusting tank 30 using, for example, a dry pump, and the clean air is contained therein. Is configured to supply. Instead of the clean air generator 15, various gas supply devices that supply nitrogen gas, helium gas, or a mixed gas thereof can be connected in order to provide a gas atmosphere in which electron beam irradiation can be satisfactorily performed. .

  In the electron beam irradiation apparatus for an opening container having the above-described configuration, the opening container 1 fed into each of the front pressure adjustment tanks 20 in an upright state from the previous process line sequentially passes through the irradiation treatment tank 10 from the front pressure adjustment tank 20, Although it is carried out from the post-pressure adjusting tank 30 to the post-process line, it is sterilized by electron beam irradiation from the electron beam generating means 40 in the negative pressure atmosphere of the irradiation processing tank 10 partway. At this time, when the rotary carrier 21 in the front pressure adjustment tank 20 rotates in the clockwise direction, it is formed in a range closer to the irradiation treatment tank 10 from the position where it is taken into the front pressure adjustment tank 20 from the previous process line of the open container 1. The small compartment 22 holding the open container 30 inside is in a state where the pressure is gradually reduced from the atmospheric pressure by the exhaust means, and when it moves to the rotary carrier 11 in the irradiation processing tank 10, The negative pressure is almost the same.

  Conversely, the rotary carrier 31 in the rear pressure adjusting tank 30 rotates in the clockwise direction, and the opening container 1 is formed in a range approaching the discharge position from the irradiation processing tank 10 to the subsequent process line, and the opening container 30 is formed inside. In the small section 32 that holds the pressure, the exhaust means gradually approaches the atmospheric pressure from the negative pressure state in the irradiation processing tank 10, and the atmospheric pressure is reached when the open container 1 is discharged to the post-process line side. Become.

  Since the electron beam irradiation apparatus for an open container is configured as described above, the pressure management inside each tank can be appropriately and appropriately managed by the irradiation processing tank 10, the front pressure adjustment tank 20, and the rear pressure adjustment tank 30, so that the negative In the irradiation treatment tank 10 maintained at a pressure, the sterilization treatment of the open container 1 with an electron beam can be effectively performed using the low energy electron beam generating means 40.

  Furthermore, in this electron beam irradiation apparatus for open containers, the irradiation processing tank 10, the front pressure adjustment tank 20, and the rear pressure adjustment tank 30 are integrally connected, and each open container remains in an upright state with a rotary conveyance body inside each tank. Since it can be conveyed at high speed in order and is irradiated with an electron beam within an area provided in the irradiation treatment tank 10, the sterilization treatment of the open container incorporated in a production line for beverages or the like can be performed continuously. In addition, since each rotary transport body 11, 21, 31 is rotated to transport the open container 1 in an upright state, no excessive force is applied and the wear of the transport mechanism portion is small, so that it is long on the production line. Can be used for a period.

  2 and 3 show a specific configuration example of the electron beam irradiation apparatus for an open container according to the present invention. In this example, the diameter of the irradiation treatment tank 10 is larger than that of the front pressure adjustment tank 20 and the rear pressure adjustment tank 30 that are integrally connected. In this large irradiation treatment tank 10, a plurality of electron beam generating means 40 are arranged in an arcuate range of the upper surface portion facing the position that becomes the conveyance path of the open container, and each is connected to a power source (not shown). Connected. For this reason, each open container is subjected to electron beam irradiation sterilization treatment in a wide range to which each electron beam generating means 40 is attached while being transported in the irradiation processing tank 10.

  The irradiation treatment tank 10, the front pressure adjustment tank 20, and the rear pressure adjustment tank 30 are connected to and integrated with each other on the gantry 17, and the rotary conveyance bodies 10, 20, and 30 in each tub are placed on the gantry 17. A drive mechanism 18 such as a motor or a wheel that synchronously drives 11, 21, and 31 is disposed. The rotary conveyance bodies 11, 21, and 31 are formed in a flat hollow drum shape, or are formed by attaching a circular frame to a support arm.

Moreover, each electron beam generating means 40 attached to the upper part of the irradiation processing tank 10 is an electron beam which makes a high vacuum such as 10 ⁵ Pa as shown in the longitudinal sectional view of FIG. 4A and the front view of FIG. A plurality of electron beam units 42 are arranged in the generation chamber 41. The electron beam EB generated in the electron beam unit 42 part is irradiated from the electron beam irradiation window 43 formed in a circular shape or a slit shape toward the transport path serving as the lower electron beam irradiation chamber 44 maintained in a negative pressure state, A sterilization process is performed on the inner and outer surfaces of each open container 1 that is held and moved by each holding mechanism 2 of the rotary carrier 11.

  Each electron beam generating means 40 includes at least one electron beam unit 42, and these are attached to the upper part of the irradiation processing tank 10 in order. Moreover, it is used as an electron beam deflecting means for deflecting the electron beam EB from the electron beam generating means 40 in the transport path portion that becomes the electron beam irradiation chamber 44 of the irradiation processing tank 10 at a position facing each electron beam generating means 40. An electron beam deflector 45 is arranged. These electron beam deflectors 45 are arranged at positions facing the electron beam units 42 of the respective electron beam generating means 40 and at different positions with respect to the height direction of the open container 1. When the electron beam deflector 45 is arranged in this way, the entire surface in the height direction of the open container 1 can be satisfactorily irradiated even when the electron beam EB is irradiated from above. The electron beam deflector 45 uses a permanent magnet, and devise the arrangement position so that the electron beam EB is appropriately deflected and can be effectively irradiated onto the entire surface of the open container 1.

  A protective plate 46 that is similarly supported by the rotary carrier 11 is provided above each holding mechanism 2. A small hole through which the electron beam EB is passed is formed in the protective plate 46, and the ring-shaped electron beam is made of a permanent magnet. A converging unit 47 is attached. By providing the protective plate 46 and the electron beam converging device 47 in this way, even when the neck portion of the mouth of the open container 1 is thin, the electron beam EB can be satisfactorily introduced into the inside and can be sterilized by irradiation. The protective plate 46 is arranged to prevent the electron beam from being excessively irradiated to a specific location near the neck of the open container 1. Therefore, since the surface of the protective plate 46 generates heat when irradiated with the electron beam EB, it is made of a material having good thermal conductivity such as copper or aluminum. Install the cooling means.

  Further, in the present invention, as shown in FIGS. 5A and 5B, the structure of the holding mechanism 2 part provided on the rotary transport body 11 is particularly devised, and the rotation mechanism 50 that rotates the open container 1 to the holding mechanism 2 part. Is provided. By this rotation mechanism 50, each open container 1 can be rotated at the time of irradiation of the electron beam EB, and the inner and outer surfaces can be irradiated more uniformly by the electron beam EB without any special means.

  The holding mechanism 2 will be specifically described. The holding mechanism 2 is rotatably held on both sides of the support frame 4 fixed to the surface of the rotary transport body 11 by a link mechanism using a pair of clamp levers 5. Both clamp levers 5 serving as a link mechanism are provided with a roller 6 for sandwiching the opening container 1 at the tip thereof and also with a roller 7 at the inner end thereof. Then, both clamp levers 5 are connected by compression springs 8, and the inner roller 7 is engaged with a clamp rail 9 provided over a range where the open container 1 is sandwiched, and the open rail 1 is transferred. When the engagement is disengaged at a portion without 9, the distal ends of the clamp levers 5 are widened by the force of the compression spring 8 to release the holding of the open container 1.

  In this example, the rotation mechanism 50 that rotates the opening container 1 is disposed on the lower surface of the support frame 4 and rotates by being engaged with the clamp rail 9 and the rollers 6 and 7. An opening container driving roller 52 that holds the container, and a connecting driving means 53 such as a driving belt that spans between the driving disk 51 and the opening container driving roller 52 are configured. As a result, the rotational force of the drive disc 51 is applied to the drive roller 52 via the drive belt 53, and the opening container 1 is rotated while being transported and moved by the electron beam irradiation window 43, the electron beam converging unit 47, and the cooling means. The surface of the open container 1 can be uniformly irradiated with an electron beam EB passing through a protective plate 46 including a certain water-cooled pipe 48 and the like, and sterilization can be performed satisfactorily.

  FIG. 6 shows an arrangement example of the electron beam deflector 45 serving as the electron beam deflecting means. In this example, a permanent magnet is used for the electron beam deflector 45. As shown in FIG. 6A, each electron beam deflector 45 is arranged such that the N pole and S pole of the permanent magnet are opposed to each other on the inner side and the outer side of the opening container 1, or the N pole of the rod-shaped permanent magnet. The arrangement is devised so that the south pole is displaced in the circumferential direction on the inner side and the outer side, and further, the north pole and the south pole of a rod-shaped permanent magnet are arranged side by side facing each other.

  With these arrangements, as shown in FIGS. 6A and 6B, the deflection direction of the electron beam EB irradiated from above is bent in the circumferential direction at different angles with respect to the central axis of the opening container 1. Therefore, the inner and outer surfaces of the open container 1 can be sterilized better.

It is the schematic which shows the principle of the electron beam irradiation apparatus for open containers of this invention. 1 is a schematic plan view illustrating a partially sectioned electron beam irradiation apparatus for an open container that is an embodiment of the present invention. FIG. 3 is a schematic side view showing a partial cross section of FIG. 2. It is a longitudinal cross-sectional view which shows an example of the electron beam irradiation means part used for the electron beam irradiation apparatus for open containers of this invention. It is a schematic block diagram which shows the holding mechanism part of the opening container used for the electron beam irradiation apparatus for opening containers of this invention. It is the schematic which shows the example of arrangement | positioning of the electron beam deflection | deviation means used for the electron beam irradiation apparatus for opening containers of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Opening container, 2 ... Holding mechanism, 3 ... Partition, 10 ... Irradiation processing tank, 11, 21, 31 ... Rotating conveyance body, 13, 23, 33 ... Vacuum exhaust apparatus, 14, 24, 34 piping, 20 ... Previous Pressure adjusting tanks 22, 32 ... small sections, 30 ... post pressure adjusting tanks, 40 ... electron beam generating means, 43 ... electron beam irradiation window, 45 ..., 46 ... protective plate, 47 ... electron beam converging device, 48 ... water cooling Pipe, 50 ... Rotating mechanism, 51 ... Drive disk, 52 Drive roller, 53 ... Connection drive means, G ... Gap, EB ... Electron beam.

Claims (6)

  A front pressure adjustment tank and a rear pressure adjustment tank are integrally coupled to the side surface portion of the irradiation processing tank that is provided with a decompression means and maintains a negative pressure state, and a rotary carrier is rotatably disposed in each tank. And a plurality of holding mechanisms for holding the open containers at substantially equal intervals on the outer surface of each rotary transport body, and opening containers between the rotary transport bodies from the front pressure adjustment tank side to the rear pressure adjustment tank side. In order to be able to deliver in order, a partition wall is provided so as to divide each holding mechanism in the rotary conveyance body in the front pressure adjustment tank and the rear pressure adjustment tank. A plurality of small sections are formed, and the small range in the range from the opening container loading side to the irradiation processing tank side in the front pressure adjusting tank and the range from the irradiation processing tank side to the unloading side in the rear pressure adjusting tank. At least one decompression means for decompressing the compartment; Electron beam irradiation apparatus for opening containers, characterized in that the electron beam irradiation means is constructed by arranging the irradiation treatment tank.   A front pressure adjustment tank and a rear pressure adjustment tank are integrally coupled to the side surface portion of the irradiation processing tank that is provided with a decompression means and maintains a negative pressure state, and a rotary carrier is rotatably disposed in each tank. And a plurality of holding mechanisms for holding the open containers at substantially equal intervals on the outer surface of each rotary transport body, and opening containers between the rotary transport bodies from the front pressure adjustment tank side to the rear pressure adjustment tank side. In order to be able to deliver in order, a partition wall is provided so as to divide each holding mechanism in the rotary conveyance body in the front pressure adjustment tank and the rear pressure adjustment tank. A plurality of small sections are formed, and the small range in the range from the opening container loading side to the irradiation processing tank side in the front pressure adjusting tank and the range from the irradiation processing tank side to the unloading side in the rear pressure adjusting tank. A decompression means for decompressing the compartment is provided, and a plurality of electron beam irradiation It means the irradiation treatment bath electron beam irradiation device for opening the container, characterized by being configured by arranging a position along the conveying arc of opening container.   3. The irradiation treatment tank according to claim 2, wherein the irradiation treatment tank is formed to have a diameter larger than that of the front pressure adjustment tank and the rear pressure adjustment tank, and a plurality of electron beam irradiation means are arranged above the irradiation treatment tank. An electron beam irradiation apparatus for an opening container.   4. The height of the opening container that irradiates the electron beam at a position facing each of the electron beam irradiation means in the irradiation treatment tank serving as an electron beam irradiation chamber of the electron beam according to claim 2. An electron beam irradiation apparatus for an opening container, comprising electron beam deflecting means for deflecting an electron beam at different positions.   5. The electron beam deflecting device according to claim 4, wherein the plurality of electron beam deflecting means are arranged so that the deflection direction of the electron beam is bent in circumferential directions having different angles with respect to the central axis of the opening container. Electron beam irradiation device for open containers. In any one of Claim 1-5, the rotation mechanism which rotates an opening container by the rotational drive force accompanying the movement of a rotation conveyance body in each of the several holding mechanism part provided in the rotation conveyance body in the said irradiation treatment tank is provided. An electron beam irradiation apparatus for an open container characterized by comprising.

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