JP4097644B2 - Method of sterilizing container outer surface and container retainer - Google Patents

Description

  The present invention relates to a method for sterilizing the outer surface of a container and a retainer for the container.

  Conventionally, in order to aseptically fill a cup-shaped container with contents, the container is sterilized while being held by a retainer prior to filling the contents. The retainer has a round hole into which the container is inserted, and conveys the container while holding the container in the round hole. While the container is conveyed by the retainer, a bactericidal agent such as hydrogen peroxide is sprayed on the inner surface and the outer surface to sterilize both the inner and outer surfaces, and hot air is blown to both the inner and outer surfaces to dry and remove the sterilizing agent such as hydrogen peroxide. The container sterilized in this way is then sent to a content filling device, a lid sealing device or the like, filled with the content, and the opening is sealed with the lid. This completes aseptic filling of the container (see, for example, Patent Document 1).

  In aseptic filling, it is necessary to sterilize the entire inner and outer surfaces of the container. However, as shown in FIG. 7, according to the conventional retainer 1, the lower surface of the flange portion 2 a of the container 2 is blocked by the upper surface of the retainer 1. Therefore, the sterilizing agent is less likely to adhere to the lower surface, and the sterilization failure may occur in the container 2.

  In addition, a retainer is known in which sector-shaped holding members are arranged at regular intervals along the flange portion 2a of the container 2 (see, for example, Patent Document 2). Since various portions of the lower surface of the flange portion 2a are blocked by the upper surface of the retainer, the sterilizing agent is difficult to adhere to the lower surface of the flange portion 2a, and there is a possibility that the sterilization failure may occur in the container 2.

  Further, a plate is provided with a round hole as a retainer, the upper surface of the flange portion 2a of the container 2 is pressed against the edge of the round hole, and the flange portion 2a is pressed from the lower surface to the plate side with a clip attached to the plate. Although known (for example, refer to Patent Document 3), in the case of this retainer, the entire upper surface of the flange portion 2a of the container 2 to which the plate hits and the lower surface of the flange portion to which the clip hits are blocked. There is a possibility that the sterilizing agent is difficult to adhere to this portion and the sterilization defect is caused in the container 2.

  Conventionally, in order to solve such problems, a duct-shaped enclosure is provided under the retainer, and a gaseous sterilizing agent is sprayed from the enclosure to the bottom of the container so that the container slightly floats on the retainer. Thus, a sterilization method has been proposed in which a sterilizing gas is also brought into contact with the lower surface of the flange portion of the container (see, for example, Patent Document 4).

Japanese Patent Publication No.61-3684 JP 59-115220 A JP-A-6-32331 JP 2002-68142 A

  According to the conventional method for sterilizing the outer surface of the container, as shown in FIG. 7, the container 2 is simply dropped into the round hole 1a of the retainer 1, and the flange portion 2a of the container 2 is simply hung on the edge of the round hole 1a. The sterilizing agent does not reach the lower surface of the flange portion 2a, or the sterilizing agent stays between the retainer 1 and the lower surface of the flange portion 2a of the container 2 to cause condensation to form large droplets of the sterilizing agent. Even after passing through the drying section, the disinfectant may still remain on the surface of the container or may fall from the container 2 and contaminate the chamber. Even if the retainer has a structure in which sector-shaped holding members are arranged at regular intervals along the flange portion 2a of the container 2, or the flange portion 2a of the container 2 is fixed around the round hole of the plate with a clip. Similar problems arise.

  Also, even if a method is adopted in which the container is slightly lifted on the retainer by spraying a gaseous sterilizing agent on the bottom of the container, the container falls onto the retainer after the sterilizing agent is sprayed, and the flange portion of the retainer When it comes into contact with the edge, there is a problem that a large amount of the sterilizing agent adheres to the contact portion and remains. Further, the method of floating the container with the sterilizing agent cannot be applied to a retainer that fixes the flange portion 2a of the container 2 around the round hole of the plate with a clip.

  Accordingly, an object of the present invention is to provide a container outer surface sterilization method and a container retainer that can solve the above-mentioned problems.

In order to solve the above problems, the invention according to claim 1 is directed to inserting a container having a flange portion (2a) at the opening edge of the upper end of the body portion (2b) from the body portion (2b) into the retainer (3). The container (2) is inserted into the hole (3a), and the container (2) is inserted into the container insertion hole (5) by at least three pointed pieces (5) protruding from the edge of the container insertion hole (3a) toward the center of the container insertion hole (3a). 3a) A container outer surface that is held so as to float inside, forms a gap between the flange (2a) and the container insertion hole (3a), and then supplies the sterilizing agent to the outer surface of the container (2). The sterilization method is adopted.

  The invention according to claim 2 is the method of sterilizing the outer surface of the container according to claim 1, wherein the tip (5c) of the pointed piece (5) is brought into contact with the lower surface of the flange portion (2a) of the container (2). Adopt the sterilization method of the outer surface of the container.

The invention according to claim 3 is the method for sterilizing the outer surface of the container according to claim 1, wherein the tip (5c) of the pointed piece (5) is brought into contact with the outer surface of the trunk (2b) of the container (2). Adopt the sterilization method of the outer surface of the container.
Moreover, the invention which concerns on Claim 4 WHEREIN: In the sterilization method of the container outer surface in any one of Claims 1-3, the sterilization method of the container outer surface which makes the diameter of a container insertion hole larger than the flange part of a container. The invention according to claim 5 is the sterilization method for a container outer surface according to any one of claims 1 to 4, wherein the container flange surface is lifted above the container insertion hole by a pointed piece. A sterilization method is employed, and the invention according to claim 6 is the container external surface sterilization method according to any one of claims 1 to 5, wherein the container supplies the disinfectant from below the retainer to the external surface of the container. Adopt external sterilization method.

Moreover, the invention which concerns on Claim 7 has the container insertion hole (3a) in which the container (2) which has a flange part (2a) in the opening edge of the upper end of a trunk | drum (2b) is inserted from the trunk | drum (2b). , and a rim of the container insertion hole of the container insertion hole (3a) at least three of peak pieces projecting toward the center of the (3a) (5), of each peak piece (5) of the container (2) The container (2) is held so as to float in the container insertion hole (3a) by being applied to the outer surface, so that a gap is formed between the flange portion (2a) and the container insertion hole (3a) . Retainer (3) is adopted.

Further, the invention according to claim 8 is the retainer (3) according to claim 7 , wherein the pointed tip (5c) is in contact with the lower surface of the flange portion (2a) of the container (2). A retainer characterized in that is formed.

Further, the invention according to claim 9 is the retainer (3) according to claim 7 , wherein the pointed piece (5) is arranged such that the pointed end (5c) contacts the outer surface of the body (2b) of the container (2). Adopt a retainer with formed.
The invention according to claim 10 employs a retainer in which the container insertion hole having a diameter larger than the flange portion of the container is formed in the retainer according to any one of claims 7 to 9, In the retainer according to any one of claims 7 to 10, in the retainer according to any one of claims 7 to 10, the point of the pointed piece comes into contact with the lower surface of the flange portion of the container, whereby the flange portion is lifted above the container insertion hole. Thus, a retainer provided with a pointed piece is employed.

According to the invention of claim 1 or claim 7, disinfectant supplied to the outer surface of the container (2) it is also spread evenly on the bottom surface of the flange portion while passing through the container insertion hole (3a) (2a). Therefore, the entire outer surface of the container (2) including the lower surface of the flange portion (2a) of the container (2) can be properly sterilized. In addition, since the sterilizer (5) is likely to condense on the outer surface of the container (2) such as the lower surface of the flange portion (2a), the sterilizer is likely to condense. The contact point of 5) is also properly sterilized.

According to the invention which concerns on Claim 2 or Claim 8 , since the pointed end (5c) of the pointed piece (5) contacts the lower surface of the flange part (2a) of the container (2), the container (2) during sterilization is removed. It can be held stably and sterilized properly.

According to the invention which concerns on Claim 3 or Claim 9 , since the tip (5c) of a pointed piece (5) contact | abuts on the outer surface of the trunk | drum (2b) of a container (2), the flange part of a container (2) The lower surface of (2a) can be completely exposed to allow the disinfectant to adhere, and the disinfection efficiency can be further enhanced.
According to the invention which concerns on Claim 4 or Claim 10, since the diameter of a container insertion hole (3a) is made larger than the flange part (2a) of a container (2), a disinfectant and the outer surface of a container (2) It becomes easy to pass between.
According to the invention which concerns on Claim 5 or Claim 11, the clearance gap between the flange part (2a) of a container (2) and a container insertion hole (3a) becomes large, and the mist of a disinfectant | microbicide is flange part (2a). It becomes easy to adhere to the back side of.
According to the invention which concerns on Claim 6, the whole outer surface of the container (2) including the lower surface of the flange part (2a) of a container (2) can be disinfected appropriately.

  The best mode for carrying out the present invention will be described below with reference to the drawings.

<Embodiment 1>
As shown in FIG. 1, the aseptic filling machine includes a container sterilization chamber 10 and a content filling chamber 11.

  As shown in FIGS. 2 and 3, the container 2 supplied to the aseptic filling machine is formed in a cup shape using paper, plastic or the like as a material, and a flange portion 2a is provided at the opening edge of the upper end of the body portion 2b. Have. The body portion 2b is formed in a tapered cylindrical shape, but may have other shapes such as a rectangular tube shape.

  As shown in FIG. 1, a conveyor 12 that conveys the containers 2 in one direction is disposed in the container sterilization chamber 10. As shown in FIGS. 2 and 3, the conveyor 12 has an endless chain 4 stretched horizontally. The retainers 3 are arranged at equal intervals on the endless chain 4 and are connected by a connector 4a. By driving the endless chain 4, each retainer 3 can travel in the arrow direction shown in FIG. 1 in a connected state.

  On the upper traveling path of the retainer 3, a container supply device 13, a container sterilizing device 14, and a sterilizing agent drying device 15 are sequentially provided along the traveling direction. Although these devices have a known structure and will not be described in detail, the container supply device 13 sucks the containers 2 from the piles of a large number of nested containers 2 with a suction cup and supplies them to the retainer 3 of the conveyor 12. The container sterilizer 14 sprays a sterilizer mist such as hydrogen peroxide from the spray nozzles 14a and 8 toward the inner surface and the outer surface of the container 2, and the sterilizer dryer 15 is a container. Hot air is blown from the air nozzles 15 a and 15 b toward the inner surface and the outer surface of the container 2 to dry the disinfectant attached to the surface of the container 2.

  The inside of the container sterilization chamber 10 is maintained in an aseptic state, and the retainer 3 runs intermittently at a predetermined pitch in the direction of the arrow in the container sterilization chamber 10 as the conveyor 12 is driven. The container supply device 13 supplies the container 2 to the retainer 3 when the retainer 3 shifts from the lower travel path to the upper travel path, and the container sterilization device 14 sprays nozzles toward the inner and outer surfaces of the container 2 held by the retainer 3. 14a, 8 are approached, sterilizing agent mist is sprayed from the spray nozzles 14a, 8 and the sterilizing agent drying device 15 brings the air nozzles 15a, 15b closer to the inner and outer surfaces of the container 2 held by the retainer 3, and the air nozzle The bactericides adhering to the surface of the container 2 are removed by drying by blowing hot air from 15a and 15b.

  As shown in FIG. 1, a container transfer passage 16 extends from the terminal end side of the upper running path of the retainer 3 in the container sterilization chamber 10 toward the content filling chamber 11. The container transfer passage 16 is also maintained in a sterile state. A chuck mechanism (not shown) is provided in the container transfer passage 16, and the container 2 lifted by the push-up mechanism (not shown) from the retainer 3 is sandwiched and conveyed by the chuck mechanism that sandwiches the flange portion 2 a, and is filled with the contents filling chamber. 11 and released into the retainer 18.

  A conveyor 17 is disposed in the content filling chamber 11 to convey the sterilized container 2 in one direction. The conveyor 17 has an endless chain stretched horizontally, and retainers 18 having a structure different from that of the retainer 3 are connected to the endless chain at equal intervals. This retainer 18 has the same structure as the retainer 1 shown in FIG. 7, has a hole into which the container 2 is inserted, and receives the lower surface of the flange portion 2a of the container 2 at the edge of the hole. By driving the endless chain, each retainer 18 can travel in the arrow direction shown in FIG. 1 in a connected state.

  A container transfer passage 16 is connected to the upper side of the upper running path of the retainer 18 in the content filling chamber 11, and a suction cup moving in the container transfer passage 16 adsorbs the container to the retainer 18 on the start end side. The container 2 is transferred.

  In the content filling chamber 11, a content filling device 19, a lid material sealing device 20, and a lid material punching device 21 are sequentially provided along the traveling direction of the upper traveling path of the retainer 18. Although these devices have a known structure and will not be described in detail, the content filling device 19 fills the container 2 held by the retainer 18 with the content from the filling nozzle 19a. 20 is drawn out from a feed roll 22a around which the lid material 22 is wound up and sent onto the opening of the container 2, and the heating board 20a heat-seals the lid material 22 on the upper surface of the flange portion 2a of the container 2. The lid material punching device 21 punches the lid material 22 bonded to the flange portion 2 a of the container 2 with a punching blade 21 a into a shape corresponding to the opening of the container 2.

  The inside of the content filling chamber 11 is maintained in a sterile state, and the retainer 18 intermittently travels at a predetermined pitch in the direction of the arrow as the conveyor 17 is driven in the content filling chamber 11. The suction cup in the container transfer passage 16 supplies the container 2 to the retainer 18 when the retainer 18 moves from the lower traveling path to the upper traveling path, and the contents filling device 19 opens the container 2 held by the retainer 18. The filling nozzle 19a is brought close to the container 2 to inject a predetermined amount of the contents into the container 2, and the lid material sealing device 20 applies the lid material 22 to the opening of the container 2 and heat seals the upper surface of the flange portion 2a. The lid material punching device 21 punches the lid material 22 into a shape along the opening of the container 2 for each container 2. The remaining material of the lid member 22 after punching is wound up as a winding roll 22b.

  A container discharge passage 23 is provided at the rear end of the content filling chamber 11, and although not shown, a conveyor having a suction cup is provided in the passage 23 as in the container transfer passage 16. The suction cup of the conveyor adsorbs the container 2 filled with the contents and whose opening is closed, and removes the container 2 from the retainer 18 on the end side and takes it out of the contents filling chamber 11.

  Aseptic filling of the container 2 is performed as described above, but in order to prevent sterilization failure and sterilizing agent residue on the lower surface of the flange portion 2a of the container 2 at the stage of sterilizing the outer surface of the container 2, the following is performed. A sterilization method using such a retainer is employed.

  As shown in FIGS. 2 to 4, each retainer 3 is formed of a plate material such as a stainless steel plate, and a plurality of container insertion holes 3a are formed. The container insertion hole 3 a is desirably formed with a diameter slightly larger than the flange portion 2 a of the container 2 so that the sterilizing agent can easily pass between the container 2 and the outer surface of the container 2. The container insertion hole 3a may be formed to be smaller than the outer diameter of the flange portion 2a of the container 2, but in this case, the container 2 has a container in which a gap through which the sterilizing agent passes is formed between the outer surface and the container insertion hole 3a. It is inserted into the insertion hole 3a.

  From the edge of each container insertion hole 3a of the retainer 3, at least three point pieces 5 protrude toward the center of the container insertion hole 3a. The pointed piece 5 is desirably arranged at an equal angle around the container insertion hole 3a. In this embodiment, four are provided, but five or more may be provided.

  Each pointed piece 5 includes a base portion 5a fixed to the retainer 3 and a protruding portion 5b protruding from the base portion 5a in a substantially triangular shape. Each pointed piece 5 is held around the container insertion hole 3 a of the retainer 3 by fixing the base 5 a to the lower surface of the retainer 3 with a bolt 7 via a spacer 6. The protruding portion 5b protrudes from the base portion 5a toward the center of the container insertion hole 3a, and at the same time is inclined upward, and its tip 5c extends onto a plane including the container insertion hole 3a. When the container 2 is inserted into the container insertion hole 3a in the container supply unit, the pointed end 5c of each pointed piece 5 comes into contact with the rear surface of the flange portion 2a, which is the outer surface of the container 2, so that the container 2 is The retainer 3 is held in a floating state in the container insertion hole 3a.

  As shown in FIG. 1, a container sterilization device is provided on the downstream side of the container supply device on the horizontal travel path of the retainer 3, and this sterilization section is for sterilizing the outer surface of the container 2 as shown in FIG. A spray nozzle 8 for spraying the disinfectant is provided below the retainer 3.

  The spray nozzle 8 below the retainer 3 is disposed such that the rain dew-like discharge portion 8 a faces the bottom portion 2 c of the container 2. A large number of ejection holes (not shown) for ejecting the sterilizing agent are formed in the discharge portion 8a. The ejection holes are desirably arranged in accordance with the size of the area of the outer surface of the container 2, so that the central portion is sparsely arranged closer to the outer periphery. For example, a mist of hydrogen peroxide is supplied into the spray nozzle 8 from a disinfectant generation source (not shown), and the mist is ejected from the ejection hole of the discharge portion 8a as indicated by an arrow, and the bottom 2c and the body 2b of the container 2 are ejected. It adheres to each outer surface as fine and dense droplets. Further, since the container 2 is held in a state of floating in the container insertion hole 3a of the retainer 3 by the pointed piece 5, the mist rising along the outer surface of the body portion 2b of the container 2 is caused by the container insertion hole 3a and the container 2 Through the gap between the flange portion 2a and the back side, which is the lower surface of the flange portion 2a. Thereby, all the outer surfaces of the container 2 including the lower surface of the flange part 2a of the container 2 are sterilized appropriately. In addition, since the bactericidal agent easily condenses on the portion where the tip 5c of the pointed piece 5 is in contact with the lower surface of the flange portion 2a, the portion where the pointed piece 5 comes into contact is also properly sterilized. The

  Next, the effect | action of the retainer of the said structure is demonstrated with the sterilization method of a container outer surface.

  (1) As shown in FIG. 1 to FIG. 3, the endless chain 4 is driven in the container sterilization chamber 10 to travel on a horizontal plane with all the retainers 3 connected, and the container 2 is retained by the container 3 in the container supply device 13. Is inserted into the container insertion hole 3a.

  (2) As shown in FIGS. 2 and 3, when the body 2b of the container 2 enters the container insertion hole 3a of the retainer 3, it protrudes from the edge of the container insertion hole 3a toward the center of the container insertion hole 3a. Each pointed end 5 c of the four pointed pieces 5 comes into contact with the lower surface of the flange portion 2 a of the container 2. Since the pointed end 5 c of the pointed piece 5 comes into contact with the lower surface of the flange portion 2 a of the container 2, the container 2 is stably held by the retainer 3. The container 2 is held by the four pointed pieces 5 so as to float in the container insertion hole 3a, and a gap is formed in an annular shape between the flange portion 2a of the container 2 and the container insertion hole 3a.

  (3) As shown in FIGS. 1 and 4, when the retainer 3 holding the container 2 is moved from the container supply device 13 to the container sterilization device 14, the sterilizing agent spray nozzle 8 below the retainer 3 is moved from the discharge portion 8a to the container. The mist of the disinfectant is ejected toward the bottom portion 2c of 2. The mist of the sterilizing agent is ejected from the ejection hole of the discharge part 8a as indicated by an arrow, and adheres to the outer surfaces of the bottom part 2c and the body part 2b of the container 2 as fine dense droplets.

  Further, the mist of the bactericide rises along the outer surface of the body portion 2b of the container 2 and passes upward through the gap between the container insertion hole 3a and the flange portion 2a of the container 2, and at that time also on the lower surface of the flange portion 2a. Evenly spread and adhere. Thereby, all the outer surfaces of the container 2 including the lower surface of the flange part 2a of the container 2 are sterilized. At the point-like location where the pointed tip 5c of the pointed piece 5 contacts the lower surface of the flange portion 2a, the bactericidal agent condenses and a sufficient bactericidal agent adheres. Therefore, the location where the pointed piece 5 comes into contact is also properly sterilized.

  In addition, mist of a sterilizing agent is also ejected from the sterilizing agent spray nozzle 14a above the retainer 3 shown in FIG. 1, and this mist flows into the container 2 to sterilize the inner surface of the container 2 including the upper surface of the flange portion 2a.

  (4) The retainer 3 is moved from the container sterilizer 14 to the sterilizer drying device 15 while holding the sterilized container 2, and sterilized by hot air blowing from the air nozzles 15 a, 15 b of the sterilizer dryer 15 and adhering to the container 2. Remove the agent dry.

  (5) As shown in FIG. 1, the sterilized container 2 is conveyed from the container sterilization chamber 10 to the content filling chamber 11 through the container transfer passage 16, and the retainer 18 in the content filling chamber 11. To be supplied. The retainer 18 transports the container 2 in the direction of the arrow, the content filling device 19 fills the transported container 2 with the content from the filling nozzle 19 a, and the lid material sealing device 20 places the lid material 22 on the container 2. The flange portion 2a is sandwiched between the heating platen 20a and the retainer 18 together with the lid member 22, and the lid member 22 is heat-sealed on the upper surface of the flange portion 2a, and the lid material punching device 21 retains the punching blade 21a. 18, the cover material 22 is punched into a shape along the opening of the container 2 for each container 2.

  Thus, the container 2 in which the aseptic filling of the contents has been completed is taken out of the contents filling chamber 11 from the container discharge passage 23.

<Embodiment 2>
As shown in FIG. 5, in the second embodiment, unlike the first embodiment, the pointed piece 5 is fixed to the upper surface of the retainer. A bolt 7 and a nut piece 9 are used for fixing the pointed piece 5. Thereby, the flange part 2a of the container 2 is lifted high above the container insertion hole 3a, the gap between the flange part 2a of the container 2 and the container insertion hole 3a is increased, and the mist of the bactericide is removed from the flange part 2a. It tends to adhere to the back side.

<Embodiment 3>
As shown in FIG. 6, in the third embodiment, unlike the first and second embodiments, the pointed piece 5 is formed such that the pointed end 5 c abuts on the outer surface of the body portion 2 b of the container 2. Thereby, the back surface of the flange portion 2a of the container 2 is completely exposed to the mist flow path of the sterilizing agent in the sterilizing portion, and the sterilizing agent mist adheres uniformly to the back surface of the flange portion 2a.

  The present invention is not limited to the above-described embodiments. For example, the hydrogen peroxide mist is used as the sterilizing agent, but other sterilizing agents can be used. It is also possible to supply the container as gas, spray or the like.

It is a front view of the aseptic filling machine provided with the retainer which concerns on Embodiment 1 of this invention. FIG. 2 is a partially cutaway plan view of a portion II in FIG. 1. It is a front view of the retainer and container shown in FIG. FIG. 4 is a cross-sectional view taken along line IV-IV in FIG. 2. It is a vertical sectional view showing Embodiment 2 of the present invention. It is a vertical sectional view showing Embodiment 3 of the present invention. It is a vertical sectional view showing a conventional example.

Explanation of symbols

2 ... Container 2a ... Flange 2b ... Body 3 ... Retainer 3a ... Container insertion hole 5 ... Pointed piece 5c ... Point

Claims (11)

Insert a container having a flange at the opening edge of the upper end of the body part into a container insertion hole in the retainer from the body part, and at least three pointed pieces projecting from the edge of the container insertion hole toward the center of the container insertion hole By holding the container so that it floats in the container insertion hole, forming a gap between the flange portion and the container insertion hole, and then supplying the sterilizing agent to the outer surface of the container. Sterilization method.   The sterilization method for an outer surface of a container according to claim 1, wherein the tip of the pointed piece is brought into contact with the lower surface of the flange portion of the container.   The method for sterilizing an outer surface of a container according to claim 1, wherein the tip of the pointed piece is brought into contact with the outer surface of the body of the container. The container outer surface sterilization method according to any one of claims 1 to 3, wherein the diameter of the container insertion hole is made larger than the flange portion of the container. The container outer surface sterilization method according to any one of claims 1 to 4, wherein the flange portion of the container is lifted above the container insertion hole by a pointed piece. The method for sterilizing an outer surface of a container according to any one of claims 1 to 5, wherein a sterilizing agent is supplied from below the retainer to the outer surface of the container. A container insertion hole into which a container having a flange portion at the opening edge of the upper end of the body portion is inserted from the body portion; and at least three pointed pieces protruding from the edge of the container insertion hole toward the center of the container insertion hole ; The container is held so as to float in the container insertion hole by applying each pointed piece to the outer surface of the container so that a gap is formed between the flange portion and the container insertion hole. Retainer. The retainer according to claim 7 , wherein a pointed piece is formed so that the tip end contacts the lower surface of the flange portion of the container. The retainer according to claim 7 , wherein a pointed piece is formed so that a pointed end abuts on an outer surface of a body portion of the container.   The retainer according to any one of claims 7 to 9, wherein a container insertion hole having a diameter larger than a flange portion of the container is formed.   The retainer according to any one of claims 7 to 10, wherein the pointed tip of the pointed piece comes into contact with the lower surface of the flange part of the container so that the flange part is lifted above the container insertion hole. A retainer characterized in that a piece is provided.

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