JP2006160290A - Method for using container cap, container cap, and inner packing used for container cap - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a container cap which can be served for drinking from a straw without damaging a pilfer-proof function and hygienic qualities. <P>SOLUTION: The cap C comprises a cap body 1 having a pilfer-proof structure, and an inner packing 11 which is arranged on the interior of the top board 5 of the cap body 1 and has an annular wall 8 that is fitted into the mouth 2a of a container 2 upon closing the cap C. The inner packing 11 is prevented from dropping via an axially formed catch as the cap C is closed. Upon opening the cap C, the catch is released as a pilfer-proof band 7 is separated, which leaves the inner packing 11 fitted in the mouth 2a of the container 2 and exposed there. A drinker is then allowed to drink from a straw 22 penetrating an easy unsealing part 21 that is formed on the packing 11 to be at the inner side than the annular wall 8 of the top board 15 of the packing 11, or to drink directly or through the straw 22 from the container 2 by removing the packing 11. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a method of using a container cap, a container cap, and an inner packing used for the container cap. Specifically, the pill fur proof function as widely used in plastic beverage containers represented by PET bottles is provided. The present invention relates to a method of using a cap made of a synthetic resin, a cap, and an inner packing used for the cap.

  In general, this type of cap is composed of a cap body having a top plate and a body portion having a female thread that is continuous in a cylindrical shape on the outer periphery of the top plate and screwed into the outer periphery of the mouth of the container, and a body portion of the cap body. And a pilfer proof band connected by a partial connection part that is separated from the container mouth when the cap body is opened, and extends downward from the top plate of the inner packing in the cap body. A seal structure having an annular wall that closely fits and seals to the inner periphery of the mouth is employed (see, for example, Patent Document 1). This makes it impossible to recover the pilfer proof band by using a lifting stroke until the cap body is opened and the tight fitting with the container mouth of the annular wall is released to open the cap body, and thereby the pilfer The proof band is left behind in the mouth of the container, and the so-called pill fur proof function that cannot hide the fact of opening is exhibited.

In particular, the cap described in Patent Document 1 is provided with a straw insertion opening that can be broken and opened from the outside by a straw or the like at the center of the top plate of the inner packing, and is exposed to the outside from the opening of the top plate of the cap body. Yes. Accordingly, when the straw is pressed against the exposed straw insertion port, it can be broken and opened, and the beverage can be sucked and sucked through the straw inserted into the opened straw insertion port.
JP 2004-217250 A

  However, as described above, if the straw insertion opening is exposed to the outside even if it is not opened, it is a sanitary problem such that it is variously fouled and easily attached to the straw to be inserted into it. In addition, in order to facilitate the breakage and opening of the straw insertion slot, dust adheres to the recesses that form a thin line-shaped portion such as a cut-out line, such as thinning and scoring, and it tends to accumulate. In addition, there is a problem that it is easy to carry inside when it breaks, and it breaks carelessly due to external force at the time of proper opening and closing of the container after closure, or due to mischief at store etc. There is also a problem that is easy to be done. This is also a problem that the straw insertion opening is too easy to break and open compared to the opening operation with the detachment of the pilfer proof band, and the pilfer proof function of the folding angle by the pilfer proof band cannot be fully utilized. .

  Further, Patent Document 1 discloses that a cover piece is affixed to the straw insertion port in order to prevent such a situation, but such a cover piece may be inadvertently removed or mischiefed during various handling. Since it is easily peeled off, it is not a sufficient measure.

  Furthermore, the thing of patent document 1 once breaks and opens a straw insertion opening, this cannot be sealed again, The problem that a drink is easy to leak on handling of a container when there is a drink left to drink There is.

  An object of the present invention is to provide a method of using a cap of a container that can be sucked and swallowed in addition to direct drinking without sacrificing conventional pilfer proof function and hygiene, a cap of the container, and an inner packing used for these. There is.

  In order to achieve the above-described object, a method of using the container cap of the present invention includes a cap main body having a body portion having a female screw for screwing and closing the outer periphery of the mouth of the container. The body of the cap body is provided with a pilfer proof band that is connected by a partial connecting portion that is to be detached when the cap body is opened, and a separate inner packing disposed inside the top plate of the cap body. A cap having an annular wall that extends downward from the top plate and fits and seals with the mouth of the container when the cap body is plugged into the mouth of the container is hooked in the axial direction with the cap body of the inner packing. Use for plugging to prevent dropout, or use for closing and releasing the hook accompanying the plugging. When opening and removing the cap body after closing, the pilfer pull at the partial connection part The inner packing is left exposed in the state of fitting into the mouth of the container in accordance with the release state of the hook or with the release of the hook, and the inner side of the top plate has an inner side than the annular wall. One feature is that it can be used for sucking and drinking with a straw through a simple opening portion that can be easily opened, or for direct drinking or removing with a straw by removing the inner packing.

  In such a configuration, the cap main body can handle the inner packing fitted inside the top plate as one member in a state where it is prevented from falling off due to the mutual hooking in the axial direction, and the internal thread on the inner periphery of the body of the cap main body can be handled. By fitting the outer periphery of the mouth of the container with a screw, the inner packing is fitted to the container and closed in a sealed state, in addition to mounting the pilfer proof band to the well-known locking position for the separation. Can be done reliably. Nevertheless, when the cap body is opened from the closed state, as in the conventional case, the cap body is located above the container mouth with respect to the pilfer proof band that is locked in place at the container mouth. After the pilfer proof function of separating the pilfer proof band by separating the pilfer proof band by moving the partial connecting portion between the pill fur proof band and the inner packing, the hook portions are caught by the closure. The inner packing is released by being released or by releasing the hooks between the hooking parts due to the opening, leaving the inner packing in a state of fitting into the mouth of the container, so that it is exposed inside the annular wall of the top plate. The opened simple opening portion is opened and a straw is inserted to allow the beverage in the container to be kept in a state where the beverage is prevented from leaking out by fitting with the mouth of the container. Also that to drink Sucking low, also the removal of the inner packing also to drink suck straight drinking or straw Kyoseru. In addition, the cap body does not have an opening structure portion and can be resealed by itself or together with the inner packing when it is closed again.

  The method of using the cap of the container according to the present invention also includes a cap body having a body having a female screw for screwing and closing the outer periphery of the mouth of the container, and a cap body of the cap body on the body of the cap body. A pilfer proof band connected by a partial connection portion that is to be disconnected when the cap is opened, and a separate inner packing arranged inside the top plate of the cap body, and extending downward from the top plate of the inner packing, the cap body A cap having an annular wall that fits and seals with the mouth of the container in accordance with the closure of the container mouth is used to close the cap to prevent the inner packing from dropping off due to being caught in the axial direction. Or when releasing the cap body after closing, and removing the pilfer proof band at the partial connection portion when opening and removing the cap body after closing. In addition to the rest, the inner packing can be left exposed in the fitting state to the mouth of the container by the hook release state or with the release of the hook, and can be easily opened inside the annular wall of the top plate. It can be used for sucking and drinking with a straw through a simple opening, or for direct drinking by removing the inner packing or for sucking and drinking with a straw. Another feature is to enable sealing through the packing.

  In such a configuration, in addition to the method of using the cap of the container having the one feature described above, further, depending on re-closing of the cap body after opening, the seal is directly applied to the mouth of the container or via the inner packing. Therefore, the mouth of the container can be resealed regardless of the presence or absence of the inner packing.

  The cap of the container according to the present invention includes a cap body having a body having a female screw for screwing and closing the outer periphery of the mouth of the container, and the body of the cap body is separated as the cap body is opened. A pilfer proof band connected by a partial connecting portion and a separate inner packing arranged inside the top plate of the cap body, and the inner packing extends downward from the top plate and opens the mouth of the cap body container. An annular wall that fits and seals with the mouth of the container as it is closed, and a simple opening portion that is easily opened inside the annular wall of the top plate, between the cap body and the inner packing In addition, the inner packing prevents the inner packing from dropping from the container mouth, and the cap body is released in advance by closing the cap body into the container mouth, or the closed cap body is opened. When One feature is that the hook is released with a force smaller than the pull-out resistance from the state in which the annular wall is fitted with the container mouth. The method of using the container cap according to the one feature Can be achieved. Here, the pull-out resistance includes a temperature drop after hot pack and a pulling pressure due to decompression.

In a further configuration in which the hook portion of the inner packing and the hook portion of the body portion of the cap body are released by the displacement due to elastic deformation or plastic deformation of at least one of them or the periphery thereof,
Cap body of the inner packing can be obtained in a timely manner by the necessary elastic deformation or plastic deformation on the hook part itself and its surroundings by using the cap body closing and opening of the container and the relative movement with the inner packing. It is possible to easily leave the cap body at the mouth when the cap body is opened while keeping the cap from falling off.

Elastic deformation or plastic deformation is not on the inner packing side, and the inner packing is made of a resin material that is softer than the cap body.
By making the cap body harder than the inner packing, the inner packing is easier to press against the sealing position while being easy to receive external force and easy to apply strong operating force. It is possible to easily obtain the elastic deformability and plastic deformability necessary for the hook portion on the inner packing side while ensuring the familiarity and sealing property between the mouth of the container as a soft material.

In a further configuration, the hooking portion that is elastically deformed or plastically deformed and its peripheral portion are provided intermittently in the circumferential direction.
Since the hook portion or its peripheral portion is intermittent in the circumferential direction, the deformation rigidity is lower than that in the case where the hook portion is continuous in the circumferential direction, and both elastic deformation and plastic deformation are easy and reliable.

The hook part that is elastically deformed or plastically deformed is provided with a deformation promoting part by hollowing, engraving, cutting, etc. that promotes elastic deformation or plastic deformation on the inner packing side base part or the trunk side base part of the cap body. In the configuration
Because the deformation promoting parts such as the lightening, engraving, cutting, etc. on the inner packing side where the hook part or the peripheral part thereof is provided or the trunk side base part of the cap body, the deformation rigidity thereof is reduced, It becomes easy to release the hook by elastic deformation or plastic deformation of the hook part or its peripheral part.

Between the top plate of the cap body and the inner packing, in a further configuration having an annular pressure contact portion that works to press the inner packing against the top surface of the container mouth when the cap body is closed,
As long as the inner packing is located inside the top plate of the cap body, regardless of whether it is initially closed or re-closed, a local pressure is applied by the annular pressure contact between the top plate of the cap body and the top plate of the inner packing. A strong pressing force is continuously obtained in an annular shape, and the inner packing can be easily pressed onto the entire top surface of the container mouth. If there is an annular pressure contact part on the top plate side of the cap body, if there is an inner packing, it will work against it, and if there is no inner packing, it will work directly against the top of the container mouth, in either case However, a seal in which a strong local pressing force continues in an annular shape is possible.

Between the cap body and the periphery of the simple opening portion of the inner packing, there is an annular pressure contact portion that presses in a sealed state when the cap body is closed.
When the cap body is re-closed after opening the simple opening part of the inner packing, even if the simple opening part is opened at the time of initial closure, the top of the cap body around the simple opening part It is possible to prevent the beverage in the container from spreading outside the region corresponding to the simple opening portion between the top plates by the sealing state by the annular pressure contact portion between the plate and the top plate of the inner packing.

  The above-mentioned method, the cap is also a top plate that is fitted inside the top plate of the cap body, an annular wall that extends downward from the top plate and fits into the mouth of the container and seals, and an annular shape of the top plate A simple opening part provided so that it can be easily opened inside the wall, and a hook part and an axis line on the inner periphery of the body part of the cap body provided on the outer periphery of the flange part placed on the top surface of the mouth of the top plate container A hook portion that is hooked in the direction and is prevented from falling off from the fitting position, and the hook portion is accompanied by at least one elastic deformation or plastic deformation at the time of closing or opening the cap body of the hook portion or its peripheral portion. There is also provided an inner packing of a container cap characterized in that the mating is released.

  In this case, an annular pressure contact portion between the top plate of the cap body and the top plate of the cap body is provided around the simple opening portion of the top plate as having an annular ridge that is sealed by pressure contact with the top plate of the closed cap body. be able to.

  In addition, the flange portion of the top plate of the inner packing has an annular ridge that presses and seals against the top surface of the mouth of the container while being in pressure contact with the top plate of the closed cap body. It can be set as the annular press-contact part between.

  Further objects and features of the present invention will become apparent from the following detailed description and drawings. Each feature of the present invention can be used alone or in combination in various combinations as much as possible.

  According to one aspect of the method of using the cap of the container of the present invention, the sealing function of the mouth of the container in the integral handling by the engagement with the inner packing by the initial closing of the cap body and the opening of the cap body are opened. Without damaging the pilfer proof function at the time, when opening the cap body, it is left exposed in the state of fitting into the container mouth without being affected by the hooking of the inner packing, preventing the leakage of beverage by the inner packing In a state, it is possible to suck and drink with a straw through the simple opening part, and it is also possible to drink directly with the inner packing removed or with a straw. In addition, the cap body does not have an opening structure and can be reclosed and resealed by itself or with the inner packing, and the opening of the container can be resealed. Can be prevented from becoming unsanitary.

  Hereinafter, an embodiment of a container mouth cap according to the present invention will be described with reference to FIGS. The following description and illustrations are specific examples of the present invention and do not limit the contents described in the claims.

  The cap of the container mouth of the present embodiment is intended for a resin cap provided at the mouth of a so-called plastic bottle called a plastic bottle. Example shown in FIG. 1A, example shown in FIG. 3A, example shown in FIG. 4A, example shown in FIG. 5, example shown in FIG. 6, example shown in FIG. 7, example shown in FIG. As shown, the cap C is screwed between the circular top plate 5 in plan view and the external thread 2b on the outer periphery of the mouth 2a of the container 2 that is continuous with the outer periphery of the top plate 5 in a cylindrical shape in plan view. A cap body 1 having a body portion 4 having a mating female screw 3, and a so-called bridge for separating the body portion 4 of the cap body 1 from the mouth 2 a of the container 2 when the cap body 1 is opened. A pilfer proof band 7 connected by a partial connection portion 6 arranged in the circumferential direction, and a separate inner packing 11 fitted and arranged so as not to fall off the top plate 5 of the cap body 1. The inner packing 11 extends downward from the top plate 15 and is closely fitted to the inner periphery of the mouth 2a of the container 2. It has 8, and the basic configuration of this.

  The cap C having such a basic configuration is attached to the mouth 2a of the container 2 and closed, and filled with high temperature contents, or filled with normal temperature contents and then heat treated at high temperature. The container 2 filled with the finished high temperature content is sealed. This is a so-called hot pack. Closing with the cap C is performed by screwing the cap body 1 and the male and female screws 3, 2 b of the container 2 together and screwing the cap body 1 to the mouth 2 a of the container 2. At this time, the annular wall 8 has a tight fitting allowance a as representatively shown in FIG. 1A at a tight fitting portion 8a formed by a bulging portion in the middle of the inner circumference, and the inner circumference of the mouth 2a of the container 2 is formed. On the other hand, the container 2 is in a state in which the flange portion 16 is tightly fitted at least at a position of a predetermined fitting depth b and projects from the portion of the annular wall 8 to the outer periphery to be in close contact with at least the top surface 2c of the mouth 2a of the container 2. The mouth 2a is sealed. In particular, when the inside of the container 2 is depressurized due to cooling to room temperature or refrigerated storage after the hot-packing, the inner packing 11 is attracted to keep the tight fitting state, and the top surface 2c of the container 2 of the flange portion 16 is maintained. Increases the degree of sealing because it increases the degree of adhesion. However, the use of the cap C is not limited to the hot pack.

  On the other hand, a locking portion 14 having a bellows shape in the circumferential direction formed in the pilfer proof band 7 at the end of closing the cap by the cap C is integrally formed below the male screw 2b of the mouth 2a of the container 2. The ring-shaped locking ridge 2d is pulled from above to be reversed from the downward state to the upward state shown in the figure, while the reversal is completed at the same time as the closure is completed, and after over the locking ridge 2d, the bottom is finished. Engage side. As a result, the pilfer proof band 7 remains locked even when the cap body 1 is opened, and only the cap body 1 is opened upward along with the loosening of the screw between the male and female screws 3 and 2b. . By utilizing this, the partial connection portion 6 between the cap body 1 and the pilfer proof band 7 is stretched and broken at a predetermined time of opening, and the pilfer proof band 7 is moved to the initial position of the mouth 2a of the container 2. The pill fur proof function is exhibited by making it possible to open the cap only by leaving it behind. As long as the cap C has the basic structure as described above, the present invention is effective regardless of what material the container 2 is made of and any shape of the container 2. It can be the container 2 of interest.

  Here, generally, the cap body 1 and the pilfer-proof band 7 are made of synthetic resin such as high-density polyethylene including polypropylene, and the partial connection portion 6 is formed by molding or as shown in FIG. ) And the like using a cutter or the like. The inner packing 11 is made of a relatively soft synthetic resin material for the cap body 1 such as polyethylene, random polypropylene, a blend of polypropylene and rubber, and an ethylene vinyl acetate copolymer. It is easy to obtain familiarity, adhesion and sealing to the mouth 2a and the top surface 2c.

  In this embodiment, the cap C is used in this embodiment, and in any case, the cap 10 is not dropped due to the engagement with the engagement with the hook c in the axial direction with the cap body 1 of the inner packing 11. When the cap body 1 is opened and removed after closing, the cap body 1 is used for closing, or for releasing the hook accompanying the closing, and when the cap body 1 is closed and removed, FIG. 2 (b), FIG. 3 (b), FIG. As representatively shown in (b), the inner packing 11 is attached to the container 2 in accordance with the detachment state of the pill fur proof band 7 at the partial connecting portion 6 or in the unclamped state or with the release of the hang-up. It is left exposed in the fitted state to the mouth 2a. As a result, it is possible to suck and drink with the straw 22 through the simple opening portion 21 that can be easily opened inside the annular wall 8 of the top plate 15 of the inner packing 11, or with direct drinking or the straw 22 by removing the inner packing 11. To be able to suck and drink. The simple opening portion 21 may be formed by closing a through hole provided in the inner packing 11 with a seal piece and peeling it off or breaking it with a straw 22. However, since this is troublesome, in the illustrated example, the inner packing 11 is provided as a part integrally formed with a score line 23 called a score provided on the top surface side of the top plate 15 and an opening line such as meat removal, and the like with a straw 22 or the like. As representatively shown in b), it can be broken and easily opened. If the end of the straw 22 is obliquely cut as shown in the figure, the breaking force is concentrated and it is easy to work, which is advantageous for opening.

  In this way, the cap main body 1 engages the inner packing 11 fitted inside the top plate 5 in the axial direction with a hook c between the hook portions 31 and 32 as in the conventional case. A drop prevention state due to is obtained. Therefore, even if the cap body 1 after the inner packing 11 is fitted is handled as one member, the inner packing 11 is not dropped. For this reason, the female screw 3 on the inner periphery of the body portion 4 of the cap body 1 is screwed to the outer periphery of the mouth 2a of the container 2 so that the pilfer proof band 7 is attached to the locking position for separation. The inner packing 11 that is still fitted can be securely fitted into the mouth 2a of the container 2 and closed in a sealed state.

  Nevertheless, when the cap body 1 is opened from the closed state, the pill fur proof band 7 remains locked at the fixed position of the mouth 2a of the container 2 as in the conventional case. When the main body 1 is moved upward, the partial connecting portion 6 is pulled and broken to detach the pilfer proof band 7 to perform the pilfer proof function, and the hooking portion 31 associated with the plugging is applied to the inner packing 11. The inner packing 11 can be released and left in the fitted state to the mouth 2a of the container 2 by releasing the hooks 32, or by releasing the hooks 31 and 32 when the stopper is opened. The inner packing 11 thus exposed is exposed by the final removal of the cap body 1. As a result, the simple opening portion 21 provided on the inner side of the annular wall 8 of the top plate 15 of the inner packing 11 is opened, the straw 22 is inserted, and the beverage in the container 2 is fitted to the mouth 2a of the container 2. It can be used for sucking and drinking with the straw 22 while keeping the beverage from being leaked out, or for directly drinking or sucking and drinking with the straw 22 by removing the inner packing 11. Moreover, the cap body 1 does not have an opening structure portion and can be resealed alone or together with the inner packing 11 to reseal the mouth 2a of the container 2, and not only before opening but also at the time of re-sealing the inner packing. 11 can be prevented from becoming unsanitary due to dust adhering to it.

  The catching force due to the catching allowance c between the catching portions 31 and 32 is not limited to its own weight during the various handling from the time when the inner packing 11 is fitted to the cap body 1 until the mouth 2a of the container 2 is closed. Even if a little inertia works, it needs to be set to such an extent that it does not fall out. On the other hand, when the inner packing 11 is left behind in the opening 2a of the container 2 when the cap is opened, the cap body 1 is hooked to the opening 2a of the container 2 due to the hook portion 31 and 32 being caught by the hook allowance c. When the cap body 1 which has been released in advance or is closed is opened, the catch is released with a force smaller than the pulling resistance from the fitting state of the annular wall 8 with the mouth 2a of the container 2. do it. The pullout resistance at this time includes the temperature drop after hot pack and the pulling pressure due to decompression.

  Therefore, as the cap C that can be used as described above, a cap body 1 having a body portion 4 having a female screw 3 for screwing and closing the outer periphery of the mouth 2a of the container 2 and the cap body 1 A pill fur proof band 7 connected to the body portion 4 of the cap body 1 by a partial connection portion 6 that is to be separated when the cap body 1 is opened, and a separate inner packing 11 disposed inside the top plate 5 of the cap body 1. The inner packing 11 extends downward from the top plate 15, and the annular wall 8 that fits and seals the mouth 2 a of the container 2 when the cap body 1 is plugged into the mouth 2 a of the container 2, It has a simple opening portion 21 that is easily opened inside the annular wall 8, that is, in a region surrounded by the annular wall 8, and has a catch allowance c between the cap body 1 and the inner packing 11. By catching on the mating The packing 11 is prevented from falling off from the mouth 2a of the container 2, and the hook is released in advance by closing the cap body 1 to the mouth 2a of the container 2, or the cap body 1 is opened when the closed cap body 1 is opened. It suffices to provide the catch portions 31 and 32 that are released with a force smaller than the pull-out resistance from the fitted state of the annular wall 8 with the mouth 2a of the container 2 of the annular wall 8.

  In order to satisfy this, the hook part 32 of the inner packing 11 and the hook part 31 of the body part 4 of the cap body 1 are accompanied by displacement due to elastic deformation or plastic deformation of at least one of them or the periphery thereof. The container 2 can be fitted and released so that the inner packing 11 can be fitted to the cap body 1 in a state that prevents the inner packing 11 from falling off, and the cap 2 is closed or opened. The cap body of the inner packing 11 can be obtained in a timely manner by using the relative movement of the mouth 2a and the inner packing 11 to obtain the necessary elastic deformation or plastic deformation of at least one of the catch portions 31 and 32 and the periphery thereof. While the cap 1 is prevented from falling off, the container 2 can be easily removed from the mouth 2a when the cap body 1 is opened. That.

  In addition, elastic deformation or plastic deformation is performed on the inner packing 11 side. As described above, when the inner packing 11 is made of a softer resin material than the cap body 1, the cap body 1 is made of a harder material than the inner packing 11. The inner packing 11 is made of a softer material than the cap body 1 while being able to easily receive an external force and easily exert a strong operating force, and can also strongly press the inner packing 11 to the seal position. In addition to ensuring the familiarity and sealability with the mouth 2a of the container 2, it is possible to easily obtain the elastic deformability and plastic deformability required for the hook portion 32 on the inner packing 11 side. In addition, when the inner packing 11 is elastically deformed, low density polyethylene is advantageous for elastic deformation of the hook portion 32, and when plastic deformation is performed, high density polyethylene is easily deformed with appropriate flexibility. However, it becomes advantageous that the deformation becomes plastic deformation and is difficult to return.

  1 and FIG. 2 in detail, the hook portion 31 of the cap body 1 is a thread of the female screw 3 formed integrally with the trunk portion 4, and the hook portion 32 of the inner packing 11 is at the flange portion 16. A thin-walled overhang integrally formed so as to protrude outward from the outer periphery of the lower end of the side seal portion 16a as shown in FIGS. 1 (a), 1 (b) and 2 (b), which goes around the outer periphery of the mouth 2a of the container 2. The hook portion 32 is elastically deformed when the cap body 1 is opened so that the hooking with the hook portion 31 is released. In this case, although the hook portion 32 is elastically deformed, the hook portion 32 has a deformation resistance enough to prevent the inner packing 11 from falling off from the cap body 1 due to its own weight or various handling due to the hook allowance c, thereby enabling integral handling. However, when the cap body 1 is lifted with respect to the mouth 2a of the container 2 when the cap body 1 is opened and the hook portion 31 due to the thread of the female screw 3 is caught by the hook portion 32 of the inner packing 11, the hook portion 32 is moved into the inner packing. 11 is engaged with the mouth 2a of the container 2 and is subjected to elastic deformation with a force smaller than the pull-out resistance due to the suction force to the mouth 2a due to the pulling pressure after hot-packing, and the catch is released while being pushed away upward. 31 is allowed to pass upward without difficulty, and the pulling force from the opening 2a is prevented from reaching the inner packing 11, and only the cap body 1 that has been opened is removed while leaving the inner packing 11 in a fitted state with the opening 2a. . As a result, the inner packing 11 is exposed in the sealed state of the mouth 2a, the simple opening part 21 faces the outside, and the drinking by the straw 22 through the simple opening part 21 can be performed. For direct drinking by the mouth 2a of the container 2 or sucking and drinking by the straw 22, it is necessary to remove the inner packing 11 from the mouth 2a, but the stage where the side seal portion 16a of the inner packing 11 is formed on the outer periphery of the mouth 2a of the container 2 Can be easily removed by placing a fingertip on the part. Even in the example in which the side seal portion 16a is omitted, since the flange portion 16 forms a boundary with the top surface 2c of the mouth 2a, a toe is inserted to slightly expand the boundary. After pulling up, the flange 16 is put on the fingertip and pulled out.

  Here, the inner packing 11 is preferably made of the low-density polyethylene described above for appropriate elastic deformation of the hooking portion 32, and the thickness, size, shape, and hooking of the overhanging piece that forms the hooking portion 32 are made. What is necessary is just to set the strength of the catching force with the catching part 31 by setting the allowance c or the like. In the illustrated example, the internal thread 3 is a single thread that extends over one round, whereas the catch 32 is discontinuous in the circumferential direction and is advantageous for the elastic deformation. However, as shown in FIGS. 1C and 2A, the inner packing 11 is not accidentally dropped due to the inclination of the inner packing 11 in the cap body 1 or the engagement of the hook 32 into the screw groove of the female screw 3. As shown, it is provided at eight locations in the circumferential direction as having an appropriate width B. However, the hook 32 may be continuous in the circumferential direction. In this case, even if the hook allowance c is reduced, it is easy to prevent the inner packing 11 from falling off from the cap body 1, and the catch allowance c is reduced. The left-over function when the cap body 1 is opened is also enhanced.

  Further, after sucking and drinking with a straw 22 through the simple opening portion 21 of the inner packing 11 in the opened state, or after removing the inner packing 11 and directly drinking or sucking and drinking with the straw 22, the inner packing 11 is again inserted into the mouth 2a of the container 2. When the cap body 1 is closed again in a state of being fitted to the cap body 1, the hook portion 31 of the cap body 1 is hooked with the hook portion 32 of the inner packing 11 and the hook margin c. By being backed up by 2a, the hooking portion 32 is securely closed while being pushed away elastically, and the inner packing 11 is pressed and held in the sealed state of the mouth 2a of the container 2 when the closing is completed. There is no such thing as a leaking beverage. The inner packing 11 itself after the simple opening portion 21 is opened becomes a portion through which the beverage flows out through the opened simple opening portion 21, and the top plate 15 is the top plate 5 of the cap body 1 and the mouth of the container 2. It is possible to prevent the liquid from flowing out from the portion sandwiched between the top surface 2c of 2a. In order to enhance such a sealing effect, an annular ridge 33 for integrally pressing the top plate 15 of the inner packing 11 against the top surface 2c of the mouth 2a of the container 2 is integrally formed on the inner surface of the top plate 5 of the cap body 1. is there. Basically, such a ridge 33 may be integrally formed on the top plate 15 side of the inner packing 11, but if it is on the top plate 5 side of the cap body 1, the cap main body with the inner packing 11 removed. Even when 1 is closed, the amount of screw fitting with the mouth 2a of the container 2 is increased to the extent that the inner packing 11 is not provided, so that the ridge 33 is brought into pressure contact with the top surface 2c of the mouth 2a of the container 2. It is easy to ensure a seal with the mouth 2a.

  Furthermore, when re-sealing after re-sealing with the inner packing 11 with the simple opening portion 21 attached, the inner packing 11 does not receive the post-hot-packing suction pressure, so that the inner packing 11 is pulled out accordingly. The resistance is only the resistance due to the fitting with the mouth 2a of the container 2. In consideration of the restart plug in such a case, the operation force required to release the catch due to the catch allowance c between the catch portions 31 and 32 is set to be smaller than the resistance due to the fitting when the pull is not applied. It is preferable to keep it.

  Note that the inner packing 11 is provided with an air gap AG between the top plates 5 and 15, such as a concave portion or a rough surface provided on one or both of them, a convex strip 33, or the like so as not to rotate when the cap body 1 is closed. Correspondingly, a gap G as shown in FIG. 2A is provided between the inner packing 11 and the inner periphery of the body portion 4 of the cap body 1 even when the hook portion 32 is provided.

  The example shown in FIG. 3 will be described in detail. In this example, the hook portion 32 of the inner packing 11 forms a fillet-like protruding piece whose thickness decreases toward the tip or almost disappears, and the hook portion 31 formed by the thread of the female screw 3 of the cap body 1. Is set to satisfy a catching allowance c for preventing drop-off. The hook allowance c is set to be larger than that in the example of FIGS. 1 and 2, but when the cap body 1 is opened, the hook portion 31 changes the state shown by the solid line in FIG. It is pushed away to release the catch with plastic deformation, so that it almost does not return.

  Thereby, after sucking and drinking with the straw 22 through the simple opening part 21 of the inner packing 11 in the opened state, or after removing the inner packing 11 and directly drinking or sucking and drinking with the straw 22, the inner packing 11 is again put into the mouth of the container 2. When the cap body 1 is closed again in the state fitted to 2a, the hook margin c between the hook portion 32 of the cap body 1 and the hook portion 32 of the inner packing 11 is very small or not, The cap body 1 passes through the hook portion 31 without being caught by the hook portion 32 of the inner packing 11 without passing through the cap main body 1 or even if it is slightly hooked. Therefore, the cap main body 1 can be closed with the resistance and feel of operation unchanged from or almost the same as a normal cap.

  This also means that there is no or almost no catch between the cap body 1 and the inner packing 11 when the cap body 1 is restarted with the inner packing 11 with the simple opening 21 opened. This means that the inner packing 11 can be reliably left in the fitted state of the mouth 2a of the container 2 and the sucking and drinking by the straw 22 through the simple opening portion 21 can be repeated.

  Such plastic deformation of the hook portion 32 may include crushing and breakage, and it is preferable to form the inner packing 11 with a slightly harder material than when elastic deformation is used, and high density polyethylene or the like is suitable. Yes. On the other hand, the hook portion 32 has a fillet shape that decreases in thickness toward the tip, so that even if the material is slightly hard, the tip portion has an appropriate elastic deformation for eliminating the hook and the above-mentioned restart plug It is easy to guarantee.

  In this example, an annular ridge 34 that is in pressure contact with the top plate 5 by closing the cap body 1 is integrally formed on the upper surface of the peripheral portion of the simple opening portion 21 of the top plate 15 of the inner packing 11. The simple opening portion 21 is sealed by the top plate 5 by pressure contact. Thereby, after the simple opening part 21 of the inner packing 11 is opened, the effect | action which prevents a drink from flowing out from the simple opening part 21 at the time of re-closing of the cap main body 1 is acquired. Such ridges 34 can also be provided on the top plate 5 side of the cap body 1.

  It should be noted that the base portion of the fillet-like hook portion 32 of the present example or the vicinity thereof, such as a thinned portion 35 cut out from the upper surface forming an annular groove as shown in FIG. By providing a deformation promoting portion, it is possible to enhance the deformability for releasing the hook with the hook portion 31, making the plastic deformation easy, and also effective for releasing the hook by elastic deformation.

  The example shown in FIG. 4 will be described in detail. In this example, a hook part 31 protruding inward is formed integrally with the upper part of the inner periphery of the body part 4 of the cap body 1 separately from the female screw 3, and the inner packing is provided with a hook allowance c between the outer periphery of the inner packing 11. 11 is supported so as not to fall off. Since such a hooking portion 31 can be arranged on a horizontal plane, unlike the screw thread, if it is provided at about three places in the circumferential direction, the inner packing 11 can be stably supported, a small protrusion, and a hooking amount with the hooking portion 32 are provided. It is sufficient to make c extremely small. Therefore, the outer periphery of the annular side seal 16a formed on the outer periphery of the flange portion 16 of the inner packing 11 is in a state of having a hook allowance c as the hook portion 32, but between the hook portions 31, 32. It is easy to obtain elastic deformation and plastic deformation to eliminate the catch.

  In this example, the side seal portion 16a is formed in the vicinity of the flange portion 16 side base portion so that the hook portion 32 of the inner packing 11 is formed with the flange portion 16a of the inner packing 11 with substantially the same thickness. A thinned portion 35 is formed by hollowing out in an annular groove shape from the upper surface. Thereby, when the cap main body 1 is opened from the closed state of FIG. 4A to the state of FIG. 4B, the hook portion 31 of the cap main body 1 is hooked on the hook portion 32 of the inner packing 11, The hook portion 32 is pushed away with elastic deformation with the lightening portion 32 in the vicinity of the base as a deformation base point, and is elastically displaced from the state shown by the solid line in FIG. 4B to the state shown by the phantom line. Thereby, the cap body 1 is opened while releasing the catching between the catching portions 31 and 32 without difficulty.

  The example shown in FIG. 5 will be described in detail. In this example, a hooked portion 32 having a gap G is formed integrally with the outer periphery of the mouth 2a of the container 2 from the outer periphery of the flange portion 16 of the inner packing 11 to the base portion and connected downward. Further, a catch allowance c is provided between the catch portion 31 on the side of the cap body 1 and, in this example, the catch portion 31 due to the thread of the female screw 3 to prevent it from falling off. As a result, when the cap body 1 is opened, when the hook portion 32 is pressed by being hooked with the hook portion 31 of the cap body 1, it is pushed away to the gap G side between the outer periphery of the mouth 2 a of the container 2. Then, it is elastically deformed or plastically deformed with the thinned portion 35 as a base point, and the catch is released. In the case of plastic deformation, it is particularly effective for reclosing the cap body 1 as described above.

  The example shown in FIG. 6 will be described in detail. In this example, the protruding hook portion 31 provided on the cap body 1 side is integrally formed as a part of a rib-shaped portion 41 integrally formed in the cap body 1 at three or more locations in the circumferential direction, as shown in FIG. The side wall portion 16a provided in the vicinity of the base portion on the flange portion 16 side has the hook portion 32 formed by the side seal portion 16a and the hook portion c so as to be hooked. The hook is released by elastic deformation using the lightening part 35 on the part 32 side. In this case, when a notch 42 as shown by a virtual line in the figure is provided on the back of the hook portion 31 of the rib-like portion 41, a retracting behavior accompanied by elastic deformation or plastic deformation on the hook portion 31 side is obtained, and the hook portion 31, It is also possible to contribute to the release of the hooks 32, and in some cases, displacement accompanying elastic deformation or plastic deformation on the hook portion 32 side of the inner packing 11 can be omitted.

  The example shown in FIG. 7 will be described in detail. In this example, a projecting hook portion 31 provided on the cap body 1 side is formed on the top plate 5 of the cap body 1 with a gap G and a score line 43 of the base portion between the body portion 4 and the ring body. Alternatively, the side seal is formed integrally with three or more downward protruding walls 44 that are discontinuous in the circumferential direction, and is continuous with the flange portion 16 without providing the lightening portion 35 as in the example shown in FIG. The portion 16a has a catching portion 32 and a catching allowance c and is engaged with each other. As a result, the retracting behavior on the side of the catching portion 31 accompanied by elastic deformation or plastic deformation using the gap G and the score line 43 of the protruding wall 44 is obtained at an appropriate time such as when opening the plug. Release the catch.

  The example shown in FIG. 8 will be described in detail. In this example, similarly to the example shown in FIG. 5, the outer portion of the flange portion 16 of the inner packing 11 is connected to the base portion with the thinned portion 35 from the outer periphery, and between the outer periphery of the mouth 2 a of the container 2. A catching portion 32 having a gap G is integrally formed, and a catching margin c is provided between the catching portion 31 on the side of the cap body 1 and, in this example, the catching portion 31 due to the thread of the female screw 3 to prevent falling off. It is. However, in this example, the hook portion 32 is further specified as a plastically deformed portion, and then protrudes within the inner diameter D of the internal thread 3 on the inner peripheral portion of the body portion 4 of the cap body 1. A stepped portion 51 facing downward from above is integrally formed with 32, and the stepped portion 51 reaches below the hooked portion 32 by closing the cap body 1.

  Thereby, when closing the cap body 1 in which the inner packing 11 is fitted with the hook allowance c, the inner packing 11 shown in FIG. 8A is placed between the mouth 2 a of the container 2 and the cap body 1. At the final stage of the plugging state shown in FIG. 8 (b) after starting to be sandwiched, the downward stepped portion 51 pushes away the catching portion 32 of the inner packing 11 and uses the lightening portion 35 and the gap G, and FIG. The state shown in FIG. 8A is plastically deformed inward from the state shown in FIG. As a result, when the cap body 1 that has been closed is opened, the thread of the female screw 3 that is the hook portion 31 on the cap body 1 side is hooked with the hook portion 32 that is plastically deformed to the state of FIG. It has already been released and can be opened with the same feeling and feel as a normal cap. The same applies to re-closing.

  The release of the hook at the time of closing can also be performed by plastic deformation of the hook portion 31 on the cap body 1 side. In this case, the plastic deformation of the hook portion 31 on the cap body 1 side is performed in the container. The contact with the two ports 2a and the inner packing 11 may be used.

  INDUSTRIAL APPLICABILITY The present invention is practically used for a cap having a pilfer proof function that is widely used in plastic containers typified by plastic bottles, and is capable of sucking and drinking with a straw using an inner packing when opened. it can.

It is sectional drawing which shows one example of the cap of the container which concerns on embodiment of this invention in a plugged state, sectional drawing of an independent inner packing, and a bottom view. It is the top view which shows the opening state of the cap of FIG. 1, and the front view which looked at the half part in cross section. It is sectional drawing of the closure state which shows another example of the cap of the container which concerns on embodiment of this invention, sectional drawing of an opening state, and a partial sectional view of a modification. It is sectional drawing of the closure state which shows the other example of the cap of the container which concerns on embodiment of this invention, and sectional drawing of an opening state. It is sectional drawing of the principal part which shows another example of the cap of the container which concerns on embodiment of this invention. It is sectional drawing of the principal part which shows another example of the cap of the container which concerns on embodiment of this invention. It is sectional drawing of the principal part which shows the further another example of the cap of the container which concerns on embodiment of this invention. It is sectional drawing of the principal part in the capping middle state and the capped state which show another example of the cap of the container concerning embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Cap main body 2 Container 2a Port 2b Male screw 2c Top surface 3 Female screw 4 Trunk part 5, 15 Top plate 6 Partial connection part 7 Pilfer proof band 8 Annular wall 11 Inner packing 16 Flange part 16a Side seal part 21 Simple opening part 22 Straw 23 Engraved lines 31 and 32 Engagement parts 33 and 34 Projected ridges 35 Thinned part 41 Rib-shaped part 42 Notch 43 Engraved line 44 Projection wall c Engagement allowance C Cap

Claims (12)

A cap body having a body portion having a female screw for screwing and closing the outer periphery of the mouth of the container, and a pill connected to the body portion of the cap body by a partial connection portion that is to be detached when the cap body is opened. It has a proof band and a separate inner packing arranged inside the top plate of the cap body, and extends downward from the top plate of the inner packing and closes the cap body to the container mouth as the cap body is closed. A cap having an annular wall to be fitted and sealed is used for closing in order to prevent the inner packing from dropping off due to hooking in the axial direction with the cap main body, or the hooking and releasing of the hooking accompanying the closing are performed. When opening and removing the cap body after closing, in addition to leaving the pill fur proof band at the partial connection part, Or, with the release of the hook, the inner packing is left in the fitting state to the mouth of the container and exposed, and the straw is opened through a simple opening portion that can be easily opened inside the annular wall of the top plate. A method of using a cap of a container, characterized in that it can be used for sucking and drinking, or for direct drinking by removing the inner packing or sucking and drinking with a straw. A cap body having a body portion having a female screw for screwing and closing the outer periphery of the mouth of the container, and a pill connected to the body portion of the cap body by a partial connection portion that is to be detached when the cap body is opened. It has a proof band and a separate inner packing arranged inside the top plate of the cap body, and extends downward from the top plate of the inner packing and closes the cap body to the container mouth as the cap body is closed. A cap having an annular wall to be fitted and sealed is used for closing in order to prevent the inner packing from dropping off due to hooking in the axial direction with the cap main body, or the hooking and releasing of the hooking accompanying the closing are performed. When opening and removing the cap body after closing, in addition to leaving the pill fur proof band at the partial connection part, Or, with the release of the hook, the inner packing is left in the fitting state to the mouth of the container and exposed, and the straw is opened through a simple opening portion that can be easily opened inside the annular wall of the top plate. It can be used for sucking and drinking, or by direct drinking or removing with a straw by removing the inner packing, and the cap body can be sealed directly or through the inner packing by closing the cap body again after opening. A method of using a cap of a container, characterized by: A cap body having a body portion having a female screw for screwing and closing the outer periphery of the mouth of the container, and a pill connected to the body portion of the cap body by a partial connection portion that is to be detached when the cap body is opened. A fur-proof band and a separate inner packing disposed inside the top plate of the cap body, the inner packing extending downward from the top plate and opening the container mouth as the cap body is closed to the container mouth. And a simple opening portion that is easily opened inside the annular wall of the top plate, and between the cap body and the inner packing, in the mutual axial direction. The hook prevents the inner packing from coming off from the container mouth, and the hook is released in advance by closing the cap body into the container mouth, or when the closed cap body is opened, the hook becomes the ring shape. Cap of the container, characterized in that a latching portion that is also released by a small force from the pulling resistance of the fitting state between the container mouth. The hooking part of the inner packing and the hooking part of the body part of the cap main body are disengaged by at least one of them and a displacement due to elastic deformation or plastic deformation of the periphery thereof. Container cap. The container cap according to claim 4, wherein elastic deformation or plastic deformation is performed on the inner packing side, and the inner packing is made of a softer resin material than the cap body. The container cap according to any one of claims 4 and 5, wherein the hook part or its peripheral part which is elastically deformed or plastically deformed is provided intermittently in the circumferential direction. The hook part that elastically deforms or plastically deforms or its peripheral part is a deformation promoting part by hollowing, engraving, cutting, etc. that promotes elastic deformation or plastic deformation on the inner packing side base part or the trunk side base part of the cap body. The container cap according to any one of claims 4 to 6, wherein a cap is provided. 8. An annular pressure contact portion that acts to press the inner packing against the top surface of the container mouth when the cap body is closed is provided between the top plates of the cap body and the inner packing. The container cap according to Item. The container according to any one of claims 3 to 8, further comprising an annular pressure contact portion between the cap body and the periphery of the simple opening portion of the inner packing, the pressure contact portion being in pressure contact with the cap body when the cap body is closed. Cap. A top plate that fits inside the top plate of the cap body, an annular wall that extends downward from the top plate and fits and seals with the mouth of the container, and can be easily opened inside the annular wall of the top plate From the fitting position by being hooked in the axial direction with the hook part on the inner periphery of the body part of the cap body provided on the outer periphery of the flange part placed on the top surface of the mouth of the container of the top plate The hooks are prevented from falling off, and the hooks are released together with at least one elastic deformation or plastic deformation at the time of closing or opening the cap main body at or around the hooks. Inner packing of container cap characterized by. The inner packing of the cap of the container according to claim 10, wherein an annular ridge is provided around the simple opening portion of the top plate and sealed in pressure contact with the top plate of the closed cap body. 12. The container according to claim 10, wherein the flange portion of the top plate has an annular ridge that presses and seals against the top surface of the mouth of the container in pressure contact with the top plate of the closed cap body. Cap packing.

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