JP2014223930A - Cap and container with the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cap which, after unfailingly discharging a gas inside a container and filling a content therein, securely seals the container while maintaining a stable attachment state of the container cap to the container, and to provide the container with the cap.SOLUTION: A cap 120 includes: a top plate part 121; an inner ring 122; and a skirt part 123. The inner ring 122 includes: a seal region 122a which closely contacts with an inner peripheral surface of a container mouth part 111; and a tip side region 122b which is formed so as to be located closer to the tip side than the seal region 122a. A contact part 122c which contacts with the inner peripheral surface of the container mouth part 111 and a ventilation part 122d which circulates a gas between a container interior part 112 and a container exterior part are formed in the tip side region 122b.

Description

  The present invention relates to a cap and a container with a cap, and more particularly to a cap and a container with a cap that are filled and sealed with contents such as a culture medium.

  Conventionally, as shown in FIG. 10, a cap-equipped container 500 including a container 510 and a cap 520 is known, and the cap 520 is in close contact with the top plate portion 521 and the tip of the container mouth portion 511. A taper seal portion 524 that seals the mouth portion 511 and a skirt portion 523 that hangs downward from the periphery of the top plate portion 521 are provided. Also, as a cap for sealing the container mouth portion, with the inner ring provided with an inner ring that is inserted into the container mouth portion and is tightly sealed to the inner peripheral surface of the container mouth portion instead of the above-described taper seal portion 524. A cap has also been proposed (see, for example, Patent Document 1).

Japanese Patent Laid-Open No. 2002-21605

  The cap-equipped container 500 that is filled and sealed with a medium or the like is sterilized by electron beam irradiation, gamma ray irradiation, or the like. When this sterilization process is performed with the cap 520 tightened in an empty container 510, Undesired gas may be generated in the container interior 512.

  When the cap-equipped container 500 is circulated in a state where the cap 520 is tightened with respect to the container 510, the gas inside the container 512 is released when the cap 520 is opened at the time of filling the medium or the like, and the outside of the container There was a problem that there was a gas odor.

  As described above, as a technique for avoiding the above-described problem, conventionally, as shown by a symbol A in FIG. 10, the container 510 is formed so that a gap is generated between the taper seal portion 524 and the container mouth portion 511. A method has been used in which the cap-equipped container 500 is circulated with the cap 520 loosened and attached, and the gas inside the container 512 is gradually released during the transportation of the capped container 500.

However, in this case, the taper seal portion 524 and the container mouth portion 511 are not in contact with each other, and the frictional force between the taper seal portion 524 and the container mouth portion 511 is not obtained. Therefore, the cap 520 is rotated due to the transportation vibration, and the cap 520 is detached from the container 510 due to loose fitting between the thread 511a of the container 510 and the thread valley 523a of the cap 520, or the thread. There is a problem that gas remains in the container interior 512 due to the contact between the taper seal part 524 and the container mouth part 511 due to the tight fitting between the part 511a and the thread valley part 523a. Furthermore, the taper seal portion 524 described above does not constitute an inner ring that is recessed into the container mouth and tightly seals against the inner peripheral surface of the container mouth, so that the sealing performance after filling with contents such as a culture medium. There was also a problem that it was inferior.
On the other hand, when a cap with an inner ring is used as the cap described above, if the cap is attached in a loosened state so as to release the gas inside the container, the cap is loosely attached according to the length of the inner ring. There is a need. For this reason, at the time of transportation, the cap is more easily loosened and easily detached. In order to prevent detachment, it is necessary to bring the inner ring closer to the container mouth, making it easier to come into contact with the gas, and gas remains inside the container.

  Therefore, the present invention solves the conventional problems, that is, the object of the present invention is to a container that is sterilized by electron beam irradiation, gamma ray irradiation, etc. before filling and sealing the medium. The cap and cap-equipped container can be securely sealed after the contents inside the container have been reliably released and filled with contents such as culture medium while maintaining a stable mounting state of the cap during distribution. It is to be.

  The invention according to claim 1 includes a top plate portion, an inner ring that protrudes downward from the top plate portion, and a skirt portion that hangs downward from the periphery of the top plate portion. A cap to be attached, wherein the inner ring has a seal region that is in close contact with an inner peripheral surface of the container mouth portion, and a tip side region that is formed on a tip side of the seal region, and the tip side In the region, a contact part that contacts the inner peripheral surface of the container mouth part and a ventilation part that circulates gas between the inside of the container and the outside of the container are formed, thereby solving the problem. is there.

In addition to the configuration of the invention according to claim 1, the invention according to claim 2 solves the above-described problem by the fact that the ventilation portion is constituted by a groove formed on the outer peripheral surface of the tip side region. Is.
In the invention according to claim 3, in addition to the configuration of the invention according to claim 1 or 2, the ventilation portion is formed by being vertically cut along the vertical direction of the outer peripheral surface of the distal end side region, and the lower end thereof is The said subject is solved by having reached the lower end of the front end side area | region.
In the invention according to claim 4, in addition to the configuration of the invention according to claim 1 or 2, the ventilation portion is formed in a spiral shape along the vertical direction of the outer peripheral surface of the distal end side region, and the lower end thereof is The said subject is solved by having reached the lower end of the front end side area | region.
In addition to the configuration of the invention according to any one of claims 1 to 4, the invention according to claim 5 solves the above problem by forming a plurality of the ventilation portions.
The invention according to claim 6 solves the problem by including the cap according to any one of claims 1 to 5 and a container.
The invention according to claim 7 is the configuration of the invention according to claim 6, in which the container is formed with a screw thread portion formed in a spiral shape along the vertical direction on the outer peripheral surface of the container mouth portion, and the screw. The problem is solved by having a groove-like gas outlet part that vertically cuts the peak part in the vertical direction.

  According to the first aspect of the present invention, the contact portion that contacts the inner peripheral surface of the container mouth portion and the ventilation portion that circulates the gas between the inside of the container and the outside of the container are provided in the tip side region of the inner ring. By being formed, the gas inside the container can be released by the ventilation part while maintaining a stable mounting state of the cap with respect to the container by the frictional force between the inner peripheral surface of the container mouth part and the contact part.

  Further, in the invention according to the first aspect, as a secondary effect, since the seal region of the inner ring is not inserted into the container mouth portion in the distribution process, no external force is applied to the seal region of the inner ring, and the distribution process The inner ring seal region is prevented from being deformed. For this reason, when sealing a container with a cap, a seal | sticker area | region closely_contact | adheres to the internal peripheral surface of a container opening part, and can seal reliably.

  According to the second aspect of the present invention, since the ventilation portion is constituted by the groove portion formed on the outer peripheral surface of the distal end side region, the ventilation portion can be easily molded and the distal end with respect to the container mouth portion A stable mounting state of the contact portion in the side region can be maintained.

  According to the third aspect of the present invention, the ventilation portion is formed by cutting vertically along the outer peripheral surface of the distal end side region along the vertical direction, and the lower end thereof reaches the lower end of the distal end side region. The molding process is further facilitated, and a more stable mounting state of the contact portion in the tip side region with respect to the container mouth portion can be maintained.

  According to the invention of claim 4, the ventilation portion is formed in a spiral shape along the vertical direction on the outer peripheral surface of the distal end side region, and the lower end thereof reaches the lower end of the distal end side region. At the time of manufacture, it is possible to use a technique of removing the cap while rotating it with respect to the injection mold, so that it is possible to cope with a cap that has a high thread and needs to be unrotated.

  According to the fifth aspect of the present invention, since a plurality of ventilation portions are formed, the outside air can be taken into the container from the outside of the container while releasing the gas from the inside of the container to the outside of the container. The gas release property can be improved.

  According to the sixth aspect of the present invention, the cap-equipped container includes the cap and the container described above, so that the gas inside the container can be reliably released while maintaining a stable mounting state of the cap with respect to the container. Possible capped containers can be realized.

  According to the seventh aspect of the present invention, the gas formed in the tip side region of the inner ring of the cap described above is provided with the groove-like gas lead-out portion that vertically cuts the thread portion formed in the container mouth portion. By using together with the ventilation part that releases gas, the gas release property inside the container can be further improved.

Sectional drawing which shows the cap which concerns on 1st Embodiment of this invention. The figure which shows the inner ring of the cap in 1st Embodiment. Sectional drawing which shows the state mounted | worn in the state which loosened the cap with respect to the container in 1st Embodiment. Sectional drawing which shows the state mounted | worn in the state which tightened the cap with respect to the container in 1st Embodiment. Sectional drawing which shows the cap which concerns on 2nd Embodiment of this invention. The figure which shows the inner ring of the cap in 2nd Embodiment. Sectional drawing which shows the cap which concerns on 3rd Embodiment of this invention. The figure which shows the inner ring of the cap in 3rd Embodiment. The figure which shows the container opening part in 1st Embodiment. Sectional drawing which shows the state mounted | worn in the state which loosened the cap with respect to the container in a prior art.

  Below, the cap concerning a 1st embodiment of the present invention is explained based on Drawings 1-4.

  The cap 120 according to the present embodiment is used as a medium filling container cap that is filled with a medium for culturing microorganisms, and is made of a synthetic resin such as an olefin resin such as low density polyethylene, high density polyethylene, and polypropylene. The container 110 is made of a polyester resin such as terephthalate or polylactic acid, or a synthetic resin such as an olefin resin. In addition, about the use of this cap 120, it is not limited to the container for culture medium filling mentioned above.

  As shown in FIG. 1, the cap 120 has a disk-shaped top plate portion 121, a cylindrical inner ring 122 that protrudes downward from the top plate portion 121, and a downward suspension from the periphery of the top plate portion 121. A cylindrical skirt portion 123 is formed, and a screw valley portion 123a is formed on the inner peripheral surface of the cylindrical skirt portion 123 so as to be screwed into a thread portion 111a of the container 110 described later.

  As shown in FIGS. 3 and 4, the inner ring 122 is formed in a seal region 122 a that is in close contact with the inner peripheral surface of the container mouth portion 111 and seals the container mouth portion 111, and on the tip side of the seal region 122 a. And a distal end side region 122b.

  As shown in FIGS. 1, 2, and 3, the distal end side region 122 b includes a contact portion 122 c that contacts the inner peripheral surface of the container mouth portion 111, and a contact portion 122 c on the inner peripheral surface of the container mouth portion 111. Ventilation portions 122d that allow gas to flow between the container interior 112 and the container exterior in contact with each other are alternately formed on the outer peripheral surface of the distal end side region 122b.

  The ventilation portions 122d are formed as grooves on the outer peripheral surface of the distal end side region 122b, and are formed in plural along the vertical direction of the outer peripheral surface at equal intervals. Further, the lower end of the ventilation portion 122d reaches the lower end of the inner ring 122 (the distal end side region 122b).

  And in this embodiment, as shown in FIG. 2, the part in which the ventilation | gas_flowing part 122d in the outer peripheral surface of the front end side area | region 122b is not formed functions as the contact part 122c which contacts the inner peripheral surface of the container mouth part 111. .

  In this embodiment, as shown in FIG. 3, when the cap 120 is sterilized such as electron beam irradiation on the cap-equipped container 100 attached to the container 110 and when the cap-equipped container 100 is circulated ( When transporting), the front end side region 122b of the inner ring 122 of the cap 120 is disposed in the container mouth portion 111, and the contact portion 122c of the front end region 122b is brought into contact with the inner peripheral surface of the container mouth portion 111. . On the other hand, as shown in FIG. 4, when the cap 120 is attached and sealed to the container 110 filled with the contents such as the culture medium inside the container 112, the seal region 122 a of the inner ring 122 is used as the inner peripheral surface of the container mouth 111. Adhere to.

  In the cap-equipped container 100 equipped with the cap 120 of the present embodiment thus obtained, the contact portion 122c that contacts the inner peripheral surface of the container mouth portion 111, the container mouth, A ventilation portion 122d for allowing gas to flow between the container inside 112 and the outside of the container in a state where the contact portion 122c is in contact with the inner peripheral surface of the portion 111 is formed. For this reason, the container 100 with the cap before filling and sealing the culture medium or the like maintains a stable mounting state of the cap 120 with respect to the container 110 by the frictional force between the inner peripheral surface of the container mouth portion 111 and the contact portion 122c. The gas inside the container 112 can be released by the ventilation part 122d. Therefore, the gas generated when sterilization is performed by electron beam irradiation or the like does not remain inside the container.

  In addition, when performing sterilization by electron beam irradiation, examples of the gas generated inside the container include formic acid for polyethylene terephthalate (PET) and formic acid and aldehyde for olefinic resins.

  Further, in the distribution process of the container 100 with the cap, as shown in FIG. 3, since the seal region 122a of the inner ring 122 is not inserted into the container mouth portion 111, no external force is applied to the seal region 122a of the inner ring 122. The deformation of the seal region 122a of the inner ring 122 during the distribution process can be prevented. Therefore, after filling the container interior 112 with contents such as a culture medium, the container 100 with a cap sealed with the cap 120 is tightly sealed with the sealing region 122a closely attached to the inner peripheral surface of the container mouth portion 111.

  Further, since a plurality of ventilation portions 122d are formed, it is possible to release the gas from the inside of the container 112 to the outside of the container and to take in the outside air from the outside of the container to the inside of the container 112. Can be improved.

  Further, since the ventilation portion 122d is configured as a groove on the outer peripheral surface of the distal end side region 122b at equal intervals, the molding of the ventilation portion 122d is easy and the contact of the distal end side region 122b with the container mouth portion 111 is possible. The stable mounting state of the part 122c is maintained.

  Next, a cap according to a second embodiment of the present invention will be described with reference to FIGS. In the present embodiment, the configuration other than the front end side region of the inner ring is exactly the same as the first embodiment described above. Therefore, the description of the configuration other than the tip side region of the inner ring of the cap is omitted.

  In the tip side region 222b of the inner ring 222 of the cap 220 in the present embodiment, a ventilation portion 222d having a different form from the ventilation portion 122d of the first embodiment is formed. That is, the ventilation portion 222d of the second embodiment is configured by three groove portions that are spirally formed at equal intervals along the vertical direction of the outer peripheral surface of the distal end side region 222b. Moreover, the lower end of this ventilation part 222d has reached the lower end of the inner ring 222 (front end side region 222b). The ventilation portions 222d formed of the spiral groove portions are formed at equal intervals with the same screw pitch and the same spiral direction as the screw valley portions 223a of the skirt portion 223 of the cap 220.

  Also in this embodiment, as shown in FIG. 6, a portion where the ventilation portion 222 d is not formed on the outer peripheral surface of the distal end side region 222 b functions as the contact portion 222 c.

  As described above, in this embodiment, in addition to the effects of the first embodiment, the ventilation portion 222d is formed in a spiral shape with the same screw pitch and the same spiral direction as the screw valley portion 223a of the skirt portion 223. Thus, at the time of manufacturing the cap 220, it is possible to remove the cap 220 from the injection mold while rotating it, and it is possible to cope with the cap 220 that has a high thread and needs to be rotated.

  Next, the cap which concerns on 3rd Embodiment of this invention is demonstrated based on FIG. 7 and FIG. In the present embodiment, the configuration other than the front end side region of the inner ring is exactly the same as the first and second embodiments described above. Therefore, the description of the configuration other than the tip side region of the inner ring of the cap is omitted.

  In the present embodiment, the ventilation portion 322d formed in the distal end side region 322b of the inner ring 322 of the cap 320 is formed in a spiral shape at equal intervals along the vertical direction of the outer peripheral surface of the distal end side region 322b. The lower end of 322d is composed of five grooves that reach the lower end of the front end side region 322b. The effects in the third embodiment are the same as the effects in the second embodiment described above.

FIG. 9 is a perspective view of a container 110 to which the cap of the present invention is attached; a cylindrical container mouth portion 111; and a screw thread portion 111a formed in a spiral shape along the vertical direction on the outer peripheral surface of the container mouth portion 111. The form which formed the groove-shaped gas derivation | leading-out part 111b which cuts the peak part 111a up and down is shown.
Then, the gas inside the container 112 is obtained by using the above-described vent part for releasing the gas of the cap and the groove-shaped gas outlet part 111b that vertically cuts the thread part 111a formed in the container mouth part 111 in the vertical direction. Can be further improved.

  The present invention is not limited to the above-described embodiment, and a seal region in which the inner ring of the cap attached to the container mouth portion is in close contact with the inner peripheral surface of the container mouth portion to seal the container mouth portion, and the seal region. As long as it comprises a tip side region formed on the tip side, and the contact portion and the ventilation portion are formed in the tip side region, any specific configuration may be used.

  In addition, the ventilation part formed in the inner ring contacts the inner peripheral surface of the container mouth, such as a groove formed on the outer peripheral surface of the tip side region, and a through part that penetrates from the outer peripheral surface of the tip side region to the inner peripheral surface. As long as the gas can flow between the inside of the container and the outside of the container in a state where the parts are in contact with each other, any of them may be used, or a combination of these may be used. Any number may be used as long as it is two or more.

  The specific form of the cap may be either a screw cap or a stopper cap.

100, 500 ... Container with cap 110, 510 ... Container 111, 511 ... Container mouth part 111a, 511a ... Screw thread part 111b ... Gas outlet part 112, 512 ... Inside container 120 , 220, 320, 520... Caps 121, 221, 321, 521... Top plate parts 122, 222, 322... Inner rings 122a, 222a, 322a... Sealing regions 122b, 222b, 322b. Front end side region 122c, 222c, 322c ... contact part 122d, 222d, 322d ... vent part 123, 223, 323, 523 ... skirt part 123a, 223a, 323a, 523a ... screw valley part 524 ... Taper seal

Claims (7)

A cap that includes a top plate portion, an inner ring that protrudes downward from the top plate portion, and a skirt portion that hangs downward from the periphery of the top plate portion;
The inner ring has a seal region that is in close contact with the inner peripheral surface of the container mouth portion, and a tip side region that is formed on the tip side of the seal region,
The cap according to claim 1, wherein a contact portion that contacts an inner peripheral surface of the container mouth portion and a ventilation portion that circulates gas between the inside of the container and the outside of the container are formed in the distal end side region.   The cap according to claim 1, wherein the ventilation portion is configured by a groove portion formed on an outer peripheral surface of the distal end side region.   The said ventilation | gas_flowing part is longitudinally cut and formed along the up-down direction of the outer peripheral surface of the said front end side area | region, The lower end has reached the lower end of the said front end side area | region, The Claim 1 or 2 characterized by the above-mentioned. cap.   The said ventilation | gas_flowing part is helically formed along the up-down direction of the outer peripheral surface of the said front end side area | region, The lower end has reached the lower end of the said front end side area | region, The Claim 1 or 2 characterized by the above-mentioned. cap.   The cap according to claim 1, wherein a plurality of the ventilation portions are formed.   A container with a cap, comprising the cap according to any one of claims 1 to 5 and a container.   The container has a screw thread portion spirally formed along the vertical direction on the outer peripheral surface of the container mouth portion, and a groove-shaped gas outlet portion that vertically cuts the screw thread portion in the vertical direction. The container with a cap according to claim 6.

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