JP4504794B2 - Cap, content filling container and cleaning method for content filling container - Google Patents

Description

  The present invention relates to a cap, a content filling container, and a cleaning method for the content filling container.

  2. Description of the Related Art Conventionally, after filling a container such as a glass bottle or a PET bottle with contents, a container filled with contents of various beverages, in which a pill fur proof cap is screwed into the container mouth, has been manufactured and sold. In addition, when the content is a beverage containing a large amount of sugar, the sugar remains attached to the container mouth, and is dried between the cap and the container mouth, so that the residual sugar becomes like an adhesive. Thus, there may be a disadvantage that the opening torque of the cap is increased.

  In order to solve such an inconvenience, Patent Document 1 forms a cleaning hole for cleaning the contents remaining between the cap and the container mouth by irradiating the peripheral wall of the cap with laser light. A method of manufacturing a cap with a cleaning hole for a bottle mouth has been proposed. According to Patent Document 1, the position where the cleaning hole is formed has a vertical length of 3.5 to 5.0 mm from the top wall to the center of the cleaning hole, and this length is 5.0 mm. If it is larger, it is shown that a cleaning hole is formed at the position of the cap screw portion. On the other hand, it is also shown that if the length in the vertical direction is smaller than 3.5 mm, a cleaning hole is formed at the position of the cap liner portion.

That is, according to Patent Document 1, if the position of the cleaning hole is between the female screw formed on the inner peripheral surface of the skirt wall and the liner portion formed integrally with the cap, the cleaning hole can penetrate the skirt wall. It is shown that the cleaning liquid is introduced between the cap and the container mouth through the cleaning hole, and the content remaining between the cap and the container mouth is cleaned.
Japanese Patent Laid-Open No. 10-1158

  However, even if the cleaning hole is formed at a position where it can penetrate the skirt wall, it may cause a problem. In particular, the 1716 type container V ′ shown in FIG. 6 is conventionally used as the standard for the mouth of a PET bottle, but in recent years, the 1810 type container V shown in FIG. 7 has been used. As a result, in the cleaning process, the contents D washed away by the cleaning liquid R ooze out to the outside through the cleaning holes, thereby causing a problem that the appearance is deteriorated and the appearance is deteriorated.

  That is, in the 1716 type container V ′ shown in FIG. 6, the male screw portion S ′ is formed with an inclination of a predetermined angle α, so that the cleaning liquid R that has washed away the contents D flows in the direction indicated by the arrow A. In the 1810 type container V shown in FIG. 7, since the male screw part S formed in the container mouth part has a part that becomes horizontal at the start of cutting, the cleaning liquid R and the contents D are included in the horizontal part Sa. Stays mixed. When there is a cleaning hole at this staying position, the contents D and the like may ooze out of the cap through the cleaning hole due to capillary action during the drying process.

  The present invention has been made in consideration of the above-described matters, and the purpose thereof is the circumferential direction of the horizontal portion and the cleaning hole even if cleaning liquid may accumulate in the horizontal portion of the screw portion formed in the container mouth portion. It is to provide a cap, a content filling container, and a method for cleaning the content filling container which are configured so as not to exude to the outside through the cleaning hole without restricting the positional relationship.

In order to achieve the above object, the cap according to claim 1 is screwed into a container having a horizontal portion at a threading start portion of the container mouth, and includes a top wall, a skirt wall depending from the outer periphery , A damper evidence band connected to the lower part of the skirt wall via a breakable bridge, and a packing for sealing the container containing the contents by fitting into the container mouth, and an upper part of the skirt wall Ri Na to form a cleaning hole at predetermined intervals in the circumferential direction side, further, as the cleaning hole, the container opening in a state sealed by the cap, is positioned above the horizontal portion formed a cap Ru tare, the distance between the cleaning hole and the packing end in a state where the container opening sealed by the cap, the bridge is cut by rotating the cap in the opening direction or It is characterized in that the cap body to be larger than the distance increases, is set the height position of the cleaning hole on. The cleaning hole is preferably located at least 0.1 mm above the uppermost end (horizontal portion) of the male screw. Further, the cleaning hole is preferably a slit-like hole directed in the circumferential direction of the skirt wall, and the female screw is preferably a small piece-like protrusion divided into a plurality in the circumferential direction.

That is, while the horizontal portion is screwed to a container at a position of 1.7 mm downward from the upper end of the container mouth, the cleaning hole is a slit-shaped hole directed in the circumferential direction of the skirt wall, and The said washing | cleaning hole may be formed in the height position of 1.2-1.6 mm below from the upper end of a container opening part (Claim 2).

  The content-filled container according to claim 3 is a container that is sealed with the cap according to claim 1 or 2 and is filled with the content, and the content adhered around the mouth of the container is removed. The cleaning process is performed with a cleaning liquid introduced between the container opening and the skirt wall from the cleaning hole.

According to a fourth aspect of the present invention, there is provided a method for cleaning a content-filled container. After filling a container having a horizontal portion at a screw cutting start portion of a container mouth portion, A skirt wall depending from the outer periphery, a damper evidence band connected to the lower part of the skirt wall via a breakable bridge, and a packing for sealing a container containing contents by fitting into a container mouth And a cap having a cleaning hole formed at a predetermined interval in the circumferential direction on the upper side of the skirt wall, and in a state where this sealing is maintained, the cap is positioned above the horizontal portion. A cleaning method for a content filling container for cleaning the contents adhered between the container mouth and the skirt wall by flowing a cleaning liquid between the container mouth and the skirt wall from the positioned cleaning hole ,
The distance between the cleaning hole and the packing end in the state where the container mouth is sealed with the cap is larger than the distance that the cap body rises before the bridge is cut by rotating the cap in the opening direction. The height position of the cleaning hole is set .

  According to the cap of the first aspect, since the cleaning hole is located above the horizontal portion formed at the threading start portion of the container mouth portion, even if the contents may stay in the horizontal portion. Since the contents do not ooze out to the outside from the cleaning hole positioned above the horizontal portion, the problem of poor appearance can be prevented. Further, it is not necessary to regulate the circumferential position between the horizontal portion and the cleaning hole of the screwed cap.

According to the cap of the second aspect, since the cleaning hole is positioned at least 0.1 mm above the horizontal portion, it is possible to more reliably prevent the content from bleeding. Further, since the cleaning hole is a slit-shaped hole directed in the circumferential direction of the skirt wall, it is possible to form a cleaning hole having a relatively large cross-sectional area at a position above the horizontal portion. In addition, since the female screw is a small piece-like projection divided into a plurality in the circumferential direction, the cleaning liquid flowing from the cleaning hole in the cleaning process can be quickly drained through the divided part formed in the female screw. it can.

Further, according to the cap of the present invention, a damper evidence band connected to the lower part of the skirt wall via a breakable bridge and a container containing contents by being fitted to the container mouth are sealed. The distance between the cleaning hole and the end of the packing in the state where the container mouth is sealed with the cap is raised until the bridge is cut by rotating the cap in the opening direction. distance to be greater than, because is set the height position of the cleaning hole, the skirt so until the bridge is cut never cap end is in contact with the portion of the cleaning hole, even by the formation of cleaning hole Even if a protrusion is generated on the inner wall of the wall and this protrusion is large enough to be caught at the end of the packing, the sealing state by the packing is released until the bridge is broken. It will not be.

  According to the content filling container of the third aspect, when the content is filled in the container, or the content adhered to the container mouth during the transportation after filling, the content of the container mouth and the skirt wall is passed through the cleaning hole. Since the cleaning process is performed with the cleaning solution introduced in between, even if the content contains a large amount of sugar, the opening torque of the cap does not increase when the content is dried. Further, the contents attached to the container mouth portion do not ooze out to the outside through the cleaning hole.

  According to the method for cleaning a content-filled container shown in claim 4, in a state where the cleaning hole is positioned above the horizontal portion, by flowing a cleaning liquid from the cleaning hole between the container mouth and the skirt wall, Since the contents adhering between the container mouth and the skirt wall are washed, it becomes difficult for the contents to stay in the horizontal part, and even if the contents stay in the horizontal part, the contents remain in the horizontal part. Since it does not ooze out to the outside from the cleaning hole located above the part, the problem of poor appearance can be prevented.

  1 to 4 are views showing the structure of a synthetic resin pilfer-proof cap C according to a first embodiment of the present invention. The pilfer proof cap C of this embodiment may be molded by either normal injection molding or compression molding. 1 to 4, reference numeral 1 denotes a cap body, which includes a top wall 2 and a skirt wall 3 that hangs down from the outer periphery thereof. A knurled groove 3 a is formed on the outer side of the skirt wall, and a female screw is formed on the inner periphery. 4 is formed. Further, the female screw 4 of the present embodiment is a small piece-like protrusion divided into a plurality in the circumferential direction, thereby forming a vertical groove 4a that becomes a passage for a cleaning liquid to be described later.

  5 is a breakable bridge formed on the lower inner surface of the skirt wall 3, 6 is a damper evidence band (hereinafter referred to as a TE band) connected to the lower portion of the skirt wall 3 via the bridge 5, and the bridge 5 is in the circumferential direction. A plurality of gaps are provided at predetermined intervals, and a gap is formed therebetween. 7 is a continuous bellows-like locking member that is elastically deformable in the diameter increasing direction, formed on the inner side surface of the TE band 6, and is bent from the lower end of the TE band 6 obliquely inward and continuously in the circumferential direction. A small bellows 9 for drainage is formed in the bent portion at the lower end of the locking member 7 and the TE band 6. In addition, it cannot be overemphasized that this invention is not limited to the shape of the latching member 7 being a bellows shape.

  Reference numeral 8 denotes a slit-shaped cleaning hole (hereinafter referred to as a slit 8) formed on the upper side of the skirt wall in the circumferential direction of the skirt wall, and is, for example, 90 at a predetermined interval in the circumferential direction of the skirt wall 3. It is formed every °. It should be noted that the interval between the slits 8 can be arbitrarily set, and it goes without saying that the number of the slits 8 can be arbitrarily set by changing the interval. Moreover, the slit 8 is formed in the height position h of 1.2-1.6 mm from the upper end part of the container mouth part 10, for example. The height position h is adjusted according to the shape of the container mouth portion 10 described later.

  The slit 8 is for allowing a cleaning liquid (for example, hot water) for heat sterilization to flow between the container mouth 10 and the skirt wall 3. Further, in this embodiment, the shape of the cleaning hole is the slit 8 and the direction thereof is directed to the circumferential direction of the skirt wall 3, so that a relatively large hole can be formed while narrowing the width in the height direction. However, the present invention is not limited to the shape of the cleaning hole being a slit, and a round hole or other small holes may be formed.

11 is a packing that seals the container by being fitted to the container mouth 10, and this packing 11 closes the upper end of the container mouth 10 and can be inserted inside the skirt wall 3. a top plate 11a disk-shaped having an outer shape along the opening surface of the inner leg 11b in close contact with the inner peripheral surface of the container mouth portion 10 depends from the top plate 11a downward, the outer peripheral surface of the container mouth portion 10 And a side seal portion 11c to be in close contact with each other.

On the other hand, 12 is a male screw formed on the outer periphery of the container mouth portion 10 for screwing the female screw 4 of the cap body 1, and 13 is for locking the locking member 7 formed on the inner surface of the TE band. It is a locking ridge. The container shown in this example is a standard 1810 type container, and as shown in FIG. 6, the shape of the external thread 12 is different from that of the standard 1716 type container at the screw cutting start portion.

  FIG. 4 is an enlarged side view showing the relationship between the male screw 12 and the slit 8. As shown in FIGS. 4 (A) and 4 (C), the standard 1810 type container has a horizontal portion 12a at the uppermost end of the male screw 12 in the range of, for example, an angle of 0 ° to 90 ° of the screw cutting start portion. Is formed. Note that the cap C of the present invention is screwed to the container mouth portion 10 provided with the horizontal portion 12a on at least a part of the male screw 12, and the range in which the horizontal portion 12a is formed is 90 °. It goes without saying that it is not limited to the extent.

  The cap C configured as shown in FIGS. 1 to 3 is a pilfer-proof cap in which a TE band 6 is connected to the lower end of the cap body 1 via a bridge 5. When the stopper is closed, the locking member 7 formed on the inner peripheral side of the TE band 6 easily gets over the locking protrusion 13 of the container mouth portion 10 and completely closes the stopper. The TE band 6 is located on the lower side. Next, the locking member 7 is restored to an upwardly narrowed shape below the locking ridge 13 and locked to the lower portion of the locking ridge 13. At this time, the packing 11 that seals the container mouth portion 10 is pressed against the container mouth portion 10 by the top wall 2 to be in a completely closed state.

  By the way, the contents may adhere to the container mouth 10 of the container filled with the contents. Therefore, it is necessary to clean the contents using a cleaning liquid R such as hot water.

  FIG. 5 is a view showing a cleaning process after the cap C is attached to the container having the horizontal portion 12a at the screw cutting start portion of the container mouth portion 10 as shown in FIG. As shown in FIG. 5, after the container opening 10 is closed by the cap C, a cleaning liquid R such as hot water is introduced from the slit 8, and the contents adhering between the container opening 10 and the skirt wall 3 are poured. . At this time, the cleaning liquid R flowing in from the slit 8 flows downward while dissolving the contents adhering between the container mouth 10 and the skirt wall 3 to wash the contents D adhering to the container mouth 10. .

  In the standard 1810 type container mouth portion 10 shown in FIG. 4, the cleaning liquid R and the contents D may remain in the horizontal portion 12 a in the cleaning process. Therefore, in this embodiment, as shown in FIG. 4D, the height position h of the slit 8 is set to 1.2 to 1.6 mm from the upper end of the container mouth portion 10.

That is, the standard 1810 type horizontal portion 12 a is located at a position of 1.7 mm downward from the upper end of the container mouth 10. As shown in FIG. 4B, the conventional cap C has the slit 8 formed at the same height position as the height position L of the horizontal portion 12a. However, the cap C of this embodiment is shown in FIG. (D), the form to the height position h of the 1.2~1.6mm downwardly slit 8 from the upper end of the container mouth portion 10. Accordingly, the height position of the slit 8 is set to a predetermined distance d (in this example, at least 0.1 mm) so that the content D accumulated in the horizontal portion 12a does not contact the slit 8 than the height position of the horizontal portion 12a. The above can be positioned above the height position L of the bulging root portion on the upper end side of the mouth portion of the horizontal portion 12a.

  Therefore, the cleaning liquid R flowing between the outside of the container mouth 10 and the inside of the skirt wall 3 from the slit 8 is one side from the outside to the inside of the cap C as shown by an arrow a in FIGS. The contents D can be washed away by flowing. Further, the cleaning liquid R accumulated between the horizontal portion 12a and the skirt wall 3 flows downward and is drained so as to overflow from the left and right ends of the horizontal portion 12a shown in FIG.

  Furthermore, even if the cleaning liquid R or a very small amount of content D may remain in the horizontal portion 12a in the cleaning process, as shown in FIGS. 4 (C) and 4 (D), the upper portion is higher than the horizontal portion 12a. It is possible to prevent the contents D from oozing out from the slit 8 located at the position. In the present invention, what is important is the positional relationship between the slit 8 and the horizontal portion 12a in the height direction, and the distance h ′ from the top surface of the top wall 2 to the center of the slit 8 is the top wall 2 or the top plate 11a. Needless to say, the thickness is adjusted in accordance with the thickness, the shape of the container mouth 10, and the formation position of the horizontal portion 12 a with respect to the container mouth 10.

  As described with reference to FIGS. 1 to 5, by using the cap C of the present invention, the content filling container in which the container mouth portion 10 is sealed with the cap C after the contents D are filled in the container is washed. When the content D remaining in the container mouth portion 10 is washed away, even if the cleaning liquid R or a slight content D may remain in the horizontal portion 12a, the content D is slit. 8 is not exposed to the outside. Therefore, it is possible to form a sanitary and good-looking content filling container simply by sealing the container filled with the content D using the cap C of the present invention and subjecting the container to a cleaning treatment.

  The slit 8 may be located above the horizontal portion 12a formed in the container mouth portion 10 with the container mouth portion 10 sealed by the cap C. That is, when the cap C is a pill fur-proof cap provided with the packing 11 and the TE band 6 as in the present embodiment, the bridge 5 is only opened at a predetermined angle so as not to be cut once the cap C is completely closed. Rotate in the opening direction so that the slit 8 is positioned above the horizontal portion 12 a while keeping the seal with the packing 11, and the cleaning liquid R is passed between the container mouth 10 and the skirt wall 3 from the slit 8. The contents D adhered between the container mouth 10 and the skirt wall 3 may be washed by flowing. However, the cap C of the present invention may be a so-called one-piece type that does not include the packing 11.

  Next, the operation of each part when the cap C (in particular, the pilfer proof cap of this embodiment) is opened will be described. And in order to perform the operation | movement at the time of this plug opening reliably, the upper limit of the height position h of the said slit 8 shown to FIG. 4 (D) can be defined.

  When the completely closed cap C is turned in the opening direction, the cap body 1 moves upward by a predetermined distance, and the upper end 4b of the female screw 4 provided on the skirt wall 3 and the slit 8 move upward. At this time, as shown in FIGS. 1 and 5, the locking member 7 formed on the inner side of the TE band 6 is engaged with the locking ridge 13, so that the height position of the TE band 6 is the locking ridge 13. Never move up. That is, the distance between the cap body 1 and the TE band 6 is increased with the opening operation, and the bridge 5 is cut, whereby the TE band 6 is separated from the cap body 1. Thereby, the opening of the container can be confirmed.

Next, when the cap C is further rotated in the opening direction, the packing 11 comes into contact with the upper end portion 4b of the female screw 4, and the packing 11 is lifted upward, so that the middle foot 11b comes out of the container mouth portion 10. Then, the sealed state by the packing 11 is released and the plug is opened. This is the normal operation of the pilfer proof cap C of this embodiment.

  However, when the slits 8 are formed in the skirt wall 3, protrusions (so-called burrs) may be formed on the inner surface of the skirt wall 3, and the packing 11 may come into contact with the skirt wall 3 and be lifted upward. Therefore, the distance D between the slit 8 and the packing end 11c in the state where the container mouth portion 10 is sealed with the cap C is raised until the bridge 5 is cut by rotating the cap C in the opening direction. It is desirable to adjust the height position h of the slit 8 so as to be larger than the distance to be formed. In the case of this example, the upper limit of the height position h that forms the slit 8 is 1.2 mm downward from the upper end of the container mouth portion 10.

  That is, if the upper limit of the height position h of the slit 8 is set as described above, burrs are generated on the inner surface of the skirt wall 3 due to the formation of the slit 8, and this may contact the packing 11. However, the force in the opening direction is not applied to the packing 11 until the bridge 5 is cut. Therefore, the reliability of the pilfer proof cap C can be kept high.

  In the cap C of the present embodiment, the inner wall surface of the skirt wall 3 in which the slit 8 is formed is a tapered taper surface so that a burr that may be generated by the formation of the slit 8 does not contact the packing 11. ing. However, it goes without saying that the present invention is not limited to this configuration.

It is a longitudinal cross-sectional view which shows the structure of one Example of the cap which concerns on this invention. It is a disassembled perspective view of the said cap. It is a longitudinal cross-sectional view which shows the structure of the said cap in detail. It is a figure which shows the principal part structure of the said cap and a container opening part. It is a figure explaining the washing | cleaning process of the content filling container sealed using the said cap. It is a figure which shows the shape of the container mouth part used conventionally. It is a figure which shows another shape of the said container opening part.

1 Cap body 2 Top wall 3 Skirt wall 4 Female thread 5 Bridge 6 Damper evidence band 8 Slit (cleaning hole)
10 Container mouth part 11 Packing 12 Male thread 12a Horizontal part C Cap D Contents

Claims (4)

A damper that is screwed into a container having a horizontal portion at the threading start portion of the container mouth, and is connected to the top wall, a skirt wall that hangs down from the outer periphery, and a breakable bridge to the lower part of the skirt wall It has an evidence band and a packing that seals the container containing the contents by being fitted to the container mouth, and a cleaning hole is formed at a predetermined interval in the circumferential direction on the upper side of the skirt wall. Do Ri, further sealing the cleaning holes, a container opening in a state sealed by the cap, said a formed tear Ru cap so as to be positioned above the horizontal portion, the container opening by the cap The distance between the cleaning hole and the packing end in the stopped state is larger than the distance that the cap body rises before the bridge is cut by rotating the cap in the opening direction. Cap, characterized in that is set the height position of the serial cleaning hole. While the horizontal portion is screwed to a container at a position of 1.7 mm downward from the upper end of the container mouth, the cleaning hole is a slit-shaped hole directed in the circumferential direction of the skirt wall, and the cleaning hole The cap according to claim 1, wherein the cap is formed at a height of 1.2 to 1.6 mm downward from the upper end of the container mouth .   A container which is sealed with the cap according to claim 1 and filled with contents, and the contents attached around the container mouth are passed between the container mouth and the skirt wall from the cleaning hole. A content-filled container that has been cleaned with a cleaning liquid that has flowed into the container. After filling the container having a horizontal portion at the threading start portion of the container mouth with the contents, the container mouth of the container is placed on the top wall, the skirt wall hanging from the outer periphery, and the lower part of the skirt wall. It has a damper evidence band connected via a breakable bridge, and a packing for sealing the container containing the contents by being fitted to the container mouth, and in the circumferential direction on the upper side of the skirt wall. Sealing is performed using a cap formed with a cleaning hole at an interval of, and with this sealing maintained, the cleaning hole positioned above the horizontal portion is placed between the container mouth and the skirt wall. A cleaning method for a content-filled container for cleaning the content adhered between the container mouth and the skirt wall by flowing a cleaning liquid ,
The distance between the cleaning hole and the packing end in the state where the container mouth is sealed with the cap is larger than the distance that the cap body rises before the bridge is cut by rotating the cap in the opening direction. A cleaning method for a content-filled container, wherein a height position of the cleaning hole is set .

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