JP6941140B2 - plug - Google Patents

Description

The present invention relates generally to plugs, especially to plugs that engage the neck of a container. More specifically, the present invention relates to, but is not limited to, stoppers made of molded plastic materials for sealing beverage containers such as glass and plastic bottles.

Plastic bottles and stoppers are well known. There is a need to reduce the materials used in the design of such bottles and stoppers in order to reduce manufacturing costs, reduce waste and meet legal requirements. However, reducing the amount of material generally has a negative effect on performance, and design parameters are usually provided in order to balance these conflicting points.

Beverage plastic stoppers typically have four functional elements: a tubular body or shell, a fixing mechanism, a sealing mechanism, and a tamper evidence mechanism. The body, or shell, typically has a normally circular top wall and an annular side wall that extends vertically from the top wall. The side walls typically have the shape of a cylindrical skirt that extends vertically from the peripheral edge of the top wall. The fixing mechanism usually has threads, but in some cases, it may be provided with a clasp, and both structures are known. The fixing mechanism is usually formed on the inner surface of the side wall integrally with the side wall, and is adjacent to, for example, the container mouth which is the neck of the bottle. Several different sealing mechanisms are known in the art, each of which can be used alone or in combination, and several tamper evidence mechanisms have also been developed.

Recently, efforts have been made to reduce the weight in the design of plastic bottles, and the height of the neck design has been significantly reduced. As a result, the height required for the stoppers used in the neck of such containers has also been reduced. This lower height had a positive effect on reducing the weight of the stopper, but had a negative effect on the user removing the stopper from the neck of the container. More specifically, the lower sidewall height of the stopper reduces the surface area on which the user grips the stopper to apply opening torque to remove the stopper from the neck of the container.
As a result, the required opening torque is increased, the effect of which is significant in the stopper in such use cases. This can be particularly problematic in some designs of sealing and / or tamper evidence mechanisms that require the efficient application of large opening torques.

An example of a tamper evidence mechanism is known in which a band fragilely connected by a series of bridges is provided at the open end of the cylindrical body of the stopper. The band is connected to the bottom of the band by a flexible hinge and has a series of tabs extending inwardly above it. The tab engages the undercut surface of the outer flange (or opening prevention beads) of the neck of the container when the stopper is closed. With this configuration, when the stopper is turned from the container to open it first, the tab contacts the flange and prevents the tab from moving further. When the stopper is further turned beyond that point, tension is gradually applied to the breakable connection portion, the bridge portion is cut, and the tamper evidence band is separated from the main body of the stopper.

Typically, plugs incorporating this tamper evidence design are molded with the tabs that fold upward in use oriented inward downward. This extra operation adds to the cost and complexity of the manufacturing process. Patent Document 1 describes a stopper for forming a tab in a used state by forming a recess or an opening for forming a tab at a used position on the band.

Other common tamper evidence mechanisms include a series of cams protruding from the inside of the band instead of tabs. The cam is tilted to provide a series of retractable ramps that abut the flange on the neck of the container when inserted into the body of the plug. Engagement between the pull-in ramp and the flange stretches the tamper evidence band until the cam crosses the flange and engages with the flange.

U.S. Patent Application No. 2001/0015341A U.S. Pat. No. 6,705,479

There is a safety issue with such known tamper evidence mechanism designs that the plug can be removed without breaking the band or the breakable bridge. When so fraudulently opened, by bypassing the tamper evidence mechanism, the contents of the container can be contaminated or replaced without leaving evidence of fraudulent opening, and the subsequent plugging can be reapplied. It poses a serious safety risk. For example, a blade can be inserted between the band and the neck of the container, the band can be lifted outward in a lever shape and spread out, and the stopper can be removed as such by passing through the flange of the container.

Patent Document 2 attempts to solve this problem by providing a region where the thickness is locally increased to enhance the strength in the longitudinal direction of the band so that the blade cannot be inserted as described above. While effective in alleviating the safety issues mentioned above, these thick areas adversely affect the required applied torque and the weight of the plug.

The present invention relates specifically and, but not exclusively, to plugs that seal the neck opening of a container. The present invention also relates to mold stacks, molds, and mold systems for forming such stoppers. Aspects of the present invention provide a plug having a tubular body that may have a closed end and an open end. The stopper or body may have a top wall and a side wall or skirt. The side wall or skirt may be annular and / or hung from the top wall. In the main body, for example, the side wall or skirt is provided with a fixing mechanism such as a screw thread formed on the inner surface thereof, the screw thread has one or more windings, and each circumference of the winding has a plurality of discontinuities. To form an axial ventilation path. The stopper may have, for example, a tamper evidence band ruptibly connected to the open end of the body, such as a side wall or skirt. The tamper evidence band has a fastening cam that projects from its inner surface, and the fastening cam is inserted into the flange of the neck of the container during use and then with the flange when the stopper is removed from the container. It can be configured to engage and separate the tamper evidence band from the body. Further, any of the above-mentioned mechanisms described with respect to the known plug may be incorporated into the plug of the present invention as long as it does not contradict the disclosure of the present application.

According to the first broad aspect of the present invention, a stopper for sealing a neck opening of a container is provided, and the stopper includes a cylindrical main body having a closed end and an open end, and the main body. A tamper evidence band fragilely connected to the end of the opening and the tamper evidence band include a plurality of fastening cams, and each of the plurality of fastening cams protrudes from its inner surface and the container neck is the main body when used. A retractable lamp that engages with the neck flange when inserted into the open end of the container, and then a stop that engages with the flange and separates the tamper evidence band from the main body when the stopper is removed from the container. At least one of the plurality of fastening cams is configured to have a recess.

By providing the recess in the retractable lamp, the amount of material required to form the cam can be reduced while ensuring the necessary functional aspects that allow the cam to perform its required function. This reduction in material reduces the risk of shrink marks and allows the tamper evidence band to be even thinner than what is generally practical due to conventional cam designs.

The applicant of the present application has found that by reducing the thickness of the band together with the cam shape, the band can be more easily deformed in a plastic manner by removing the band after mounting. As a result, it is possible to enhance the visual indication of unauthorized opening and enhance the effect of the opening indication (tamper evidence) function. Since the band is stretched substantially uniformly with respect to the surroundings by the engagement between the cam and the flange, those skilled in the art can prevent such plastic deformation when the stopper is applied to the neck of the container. Will understand.

The recess may be located in the middle or center of the or each fastening cam, eg, in the pull-in lamp thereof. The recess may have a fan-shaped portion. The recess or fan-shaped portion may be formed by removing the molding material from the cam. The recesses may form or define two or more lamp portions provided at intervals. The separated lamp portions may be in contact with the flange of the container neck portion. At least a part of the recess may be configured to be continuous or coplanar with the inner surface of the tamper evidence band.

The pull-in lamp may be oriented at the open end or lower end of the tamper evidence band. The open end or lower end of the tamper evidence band may be, for example, one that is different from the open end of the main body and / or that defines the open end of the stopper that is provided at intervals. The catch or stop may be configured to face the closed end of the main body. The catch or stop portion may be provided by hanging a lamp portion provided at the above interval. The at least one cam may be substantially U-shaped, for example, the catch or stop forming the U-shaped base and / or the ramp forming the U-shaped arm. May be good.

The lamp may have, for example, at least one or each lamp portion having a lamp surface that abuts on, for example, the flange of the container neck. The lamp surface may be inclined toward, for example, the open end or lower end of the tamper evidence band or plug. At least one or each ramp may have sides that are inclined or tapered towards each other, for example, from the catch or stop towards the open end or lower end of the tamper evidence band or plug. ..

The catch or stop may have a surface that engages the flange, for example an engaging surface. The surface that engages the flange may be radial and / or may extend radially or substantially vertically from the tamper evidence band or its inner surface. The surface that engages with the flange may be provided by hanging the lamp portion and / or the recess provided at the intervals, or may be configured so as to face the closed end of the main body. ..

The plug may have a top wall that forms or defines the closed end. The stopper may have a side wall such as an annular side wall that hangs down from the top wall and / or forms an open end of the main body.

The main body, for example, the side wall may be configured to have a screw thread having one or more turns, for example, two or more turns. Each circumference of the winding may have one or more, for example, a plurality of discontinuities. The discontinuity portion may be configured to form an axial ventilation path. The discontinuity may form an axial ventilation path alone or jointly. At least one winding may have a continuous portion axially aligned with a discontinuous portion of another winding of one or more turns.

According to another broad aspect of the invention, a stopper for sealing the neck opening of the container is provided, the stopper having a top wall and an annular side wall hanging from the top wall, wherein the side wall is It is provided with threads having two or more turns, each turn of the winding has a plurality of discontinuities forming an axial ventilation path, and one turn is a discontinuity of another winding. It is configured to have a continuous portion that is axially aligned with the portion.

By omitting the discontinuity in one round of the winding, the applicant of the present application is surprisingly applied to the stopper at the time of application without impairing the ability of the container to exhaust the pressured contents. It was found that excessive torque has the effect of reducing damage to the threads.

The top wall may have a contact portion that hangs from it. The contact portion may have, for example, a contact surface that contacts the top surface of the neck of the container.

The contact portion may have one or more protrusions, for example, a plurality of protrusions. The contact portion may have at least three protrusions, for example, four, five, six, seven, or more protrusions. The protrusions may be provided at intervals from the top wall in the direction of hanging and / or the periphery thereof. At least one protrusion or each protrusion may form a portion of the contact surface. The protruding portion may also form a composite contact surface that abuts on the top surface of the neck of the container.

By providing a plurality of protrusions each forming a part of the contact surface, it is possible to reduce the opening torque required to remove the stopper from the container.

The plug may have, for example, an intermediate wall between the side wall and the top wall, for example, between the side wall and the periphery of the top wall. The top wall may have a first diameter and / or the side wall may have a second diameter. The second diameter may be larger than the first diameter. The intermediate wall may have a stepped portion, for example, an annular stepped portion.

The stepped portion may have a first portion extending in the axial direction, which hangs down from the top wall, for example, from the periphery thereof. The stepped portion may extend radially and have a second portion connecting the first portion, for example, its lower end to the annular side wall.

The contact portion may include the step portion or may be formed by the step portion. In certain embodiments, the abutment surface is formed by the radial portion, for example, is formed by the lower surface of the radial portion, or is continuous or coplanar with the lower surface. There may be. In the embodiment in which the abutting portion has a plurality of protruding portions, the protruding portion may hang down on the step portion or the radial portion, for example, the lower surface of the radial portion. The protrusions may be provided at intervals in the circumferential direction of the top wall and / or the radial portion, for example, the lower surface of the radial portion.

At least one of the protrusions, or each protrusion, may be tapered or inclined, for example, from the top wall or the radial portion to the contact surface thereof.

The stopper may have an extension from the contact surface to the top wall, for example, the top of the top wall. The plug has an effective plug height from the base or lower end of the side wall to the top wall, eg, the top of the top wall. The extension may be at least 5% of the effective plug height. Preferably, the extension is at least 10% of the effective plug height. In certain embodiments, the extension is at least 15%, eg, at least 20%, of the effective plug height. In some applications, the extension is at least 25% of the effective height.

The stopper may include a tamper evidence band hanging from the base of the side wall. The tamper evidence band may be annular and / or be ruptibly connected to the base or lower edge of the side wall or the open end of the body. The tamper evidence band may have a plurality of fastening cams protruding from its inner surface. The at least one fastening cam may be configured to have, for example, a retractable lamp that engages with the flange of the container neck when the container neck is introduced into the open end of the body or the side wall during use. .. At least one fastening cam may have, for example, a catch or stop that engages with the flange and separates the tamper evidence band from the body when the stopper is later removed from the container. .. At least one retractable lamp in the fastening cam may have a recess.

The stopper may have a height of the entire stopper, which may be from the base or the lower end of the tamper evidence band to the top wall, for example, the top of the top wall. The extension may be at least 5% of the total height of the stopper. Preferably, the extension may be at least 10% of the total height of the plug. In certain embodiments, the extension is at least 15% of the total height of the plug. In one application, the extension is at least 20% of the total height of the plug.

The stopper may include an inner sealing portion that hangs from the radial portion, for example, from the inside thereof, and is annular. The stopper may include an outer sealing portion that hangs from the radial portion, for example, from the outer or intermediate portion thereof, and is annular. The protrusions may be provided between the inner and outer seals and / or at intervals from the inner and outer seals, respectively.

The stopper may include one or more ribs, for example, a plurality of ribs. The ribs may be axial and / or outward. The ribs may include first and second ribs. The first rib may be longer than the second rib. The first rib may extend from the top wall toward the base or lower end of the side wall, or to the base or lower end of the side wall. The second rib may extend from the intermediate wall toward the base or the lower end of the side wall. At least one or each second rib may be provided between the paired first ribs. The first rib may have a quarter circle or a quarter circle portion extending from the stepped portion and / or between the intermediate wall and the top wall.

According to another broad aspect of the invention, a stopper for sealing the neck opening of the container is provided, the stopper being the top wall, an annular side wall hanging from the top wall, the side wall and the above. It has an intermediate wall between the perimeter of the apex wall and a plurality of axial outer ribs, the apex wall having a first diameter and the annular side wall having a second diameter larger than the first diameter. The intermediate wall has an annular step portion having a first axial portion hanging from the periphery of the top wall and a second radial portion connecting the lower end of the first axial direction to the annular side wall. The plurality of ribs include a first rib extending from the top wall toward the base of the side wall and a second rib provided between each pair of the first ribs, and the second rib includes the second rib. It is shorter than the first rib and extends from the intermediate wall toward the base of the side wall.

The stopper may be formed by injection molding, compression molding, or any other suitable process. The stopper may be made of a plastic material such as high density polyethylene, polypropylene, or any other suitable material, but is not essential. The stopper may be used, for example, in a bottle or container filled with a carbonated beverage or the like. Further, the stopper may be used for bottles and containers filled with non-carbonated beverages and other liquids, but in that case, the discontinuity of the threads may be omitted, or the threads may be replaced. It may be replaced with the engagement structure of.

Another aspect of the present invention provides a stack of molds comprising a plurality of molding inserts that together form a molding cavity (space) for molding a stopper as described above at the time of molding arrangement.

Another aspect of the present invention provides a mold for forming a stopper as described above. The mold may have a mold stack as described above. The mold may include a mold for compression molding or a mold for injection molding.

Another aspect of the present invention provides a molding system for molding a stopper as described above. The molding system may include a mold as described above. The molding system may include a compression molding or injection molding system.

Another aspect of the invention is a 3D design used in a simulation means or a 3D lamination or reduction manufacturing means or apparatus such as a 3D printer or CNC machine, including one embodiment of the stopper and the 3D design. , And / or provide computer program elements to represent and / or define.

To avoid doubt, all structures described herein apply equally to any aspect of the invention. Within the scope of the present application, the various aspects, embodiments, examples, and variations shown in the paragraphs, claims, and / or the following description and drawings may be used alone in any combination. May be adopted in. That is, the structures of all embodiments and / or any embodiments may be combined in any combination or in any combination as long as such configurations are not inconsistent. To avoid doubt, expressions such as "may," "and / or," "eg," as used herein are to be construed and described in a non-limiting manner. The existence of any structure is not essential. Also, any combination of selective structures, whether specified in the claims or not, is clearly conceivable without departing from the scope of the invention. The applicant of the present application may amend the original claims at the time of filing and make them subordinate to any other claims, or incorporate any configuration not described in the original claims. We reserve the right to change the scope of the original claims at the time of filing, including, and the right to submit new claims.

It is a perspective view of the stopper by one Embodiment of this invention. It is a bottom view of the stopper of FIG. It is a perspective sectional view of the plug of FIGS. 1 and 2 in AA of FIG. It is a partial cross-sectional view of the plug of FIGS. 1 to 3 in a part of the side wall between the axial outer ribs. It is the same perspective cross-sectional view as FIG. 3 which shows the stopper attached to the neck of a beverage bottle.

1 to 5 show a stopper 1 for sealing the container neck 11. The plug 1 has a tubular body 2 having a closed end 20 and an open end 21, and a tamper evidence band (tamper evidence band) 3 connected to the open end 21 of the tubular body 2 by a plurality of breakable bridge portions 22. Has. The main body 2 includes a top wall 4, a side wall 5 hanging from the top wall 4, an intermediate wall 6 connecting the side wall 5 to the top wall 4, a sealing system 7 hanging from the intermediate wall 6, and a shaft rib 8. It has a series of external notches that are in the form. The top wall 4 forms the closed end 20 of the main body 2, and the side wall 5 forms the open end 21 of the main body 2 to which the tamper evidence 3 is ruptibly connected. The tamper evidence 3 defines the opening 10 of the plug 1 at the lower end thereof.

The tamper evidence band 3 has a substantially cylindrical shape, and includes a peripheral inner surface 30 and a plurality of fastening cams 31 protruding from the inner surface 30. Each fastening cam 31 includes a pull-in lamp 32 facing the opening end 10 of the stopper 1 and a catch or stop 33 facing the closing end 20 of the main body 2. Each lead-in lamp 32 is formed with a recess 34 at the center, and lamp portions 35 provided at a pair of intervals are formed on both sides of the recess 34. Each recess 34 is provided by a fan-shaped portion formed by removing the molding material from the cam 31 so that the base of the recess 34 is substantially continuous or on the same plane as the inner surface 30 of the band 3.

The stop 33 of each cam 31 has the shape of a rib extending around the band 31, and is hung on the lamp 35 to form a substantially U-shaped cam 31 on the lamp 35. The stop 33 forms the U-shaped base, and the ramp 35 forms the U-shaped arm. In this embodiment, the stop 33 has a radial engaging surface 33a that extends substantially perpendicular to the inner surface 30 of the band 3 that engages the flange 12 of the container neck 11. The engaging surface 33a has, for example, a narrow slope that facilitates removal of parts from the mold.

Each lamp portion 35 includes a lamp surface 35a inclined toward the opening 10 of the stopper 1 for contacting the flange 12 of the container neck portion 11. Further, each lamp portion 35 has the plug 1 so that the width of the lamp portion 35 becomes wider so as to absorb the increase in the pressure applied by the flange 12 as the flange 12 rides on the lamp portion 35. It has a side surface 35b that tapers from the stop 33 toward the opening 10.

As a result of the above-mentioned shape of the fastening cam 31, according to the above-mentioned structure, less material is required for the above-mentioned cam 31 to function as compared with the conventional design. Further, the shape of the fastening cam 31 makes the wall thickness more constant. This reduces the risk of shrink marks and makes it possible to make the tamper evidence band thinner than what is generally practical due to conventional cam designs. The applicant of the present application can make the tamper evidence band 3 into a thickness that makes it easier to be plastically deformed by removing the band 3 after mounting together with the cam shape when the thickness of the band becomes thin. I found it. As a result, it is possible to enhance the visual indication of unauthorized opening and enhance the effect of the opening indication function.

The top wall 4 has a substantially disk-like shape and has a first diameter D1. The side wall 5 is annular and has a second diameter D2 that is larger than the first diameter D1. The side wall 5 has a thread 50 having a plurality of windings 51, 52, 53 formed by segments 54 and 55, respectively, separated by a discontinuity 56 forming an axial air passage. However, according to the present invention, a part of the segment 55 is not discontinuous in the region aligned axially with the discontinuity 56 in the other windings in the windings 51, 52, 53.

By omitting the discontinuous portion 56 in one of the windings 51, 52, 53, the applicant of the present application is surprisingly effective in withstanding the excessive torque applied to the stopper 1 when the container neck portion 11 is attached. I found that there is. More specifically, the continuous segment 55 reduces damage to the threads 50 without compromising the ability of the plug 1 to exhaust the pressured contents of the container.

The intermediate wall 6 includes an annular step portion 60 formed from a first axial wall portion 61 and a second radial wall portion 62. The axial wall portion 61 hangs down from the periphery of the top wall 4, is connected to the axial wall portion 61 by the first shoulder portion 63, and forms a portion that draws a curved surface around the top wall 4 and transitions substantially vertically. .. In the radial wall portion 62, the lower end of the axial wall portion 61 is connected to the top of the annular side wall 5 by the second shoulder portion 64, and similarly, a curved surface is drawn around the inner circumference of the radial wall portion 62 to be substantially vertical. Form a transitional part. Further, the radial wall portion 62 is provided with seven protrusions or pads 65 that hang down from the wall portion 62 and are provided around the same interval. Each pad 65 has an abutting surface 66 with which the top surface 13 of the container neck 11 abuts when the stopper 1 is attached to the container neck 11. Each pad 65 has a side surface that is inclined from the contact surface 66 on the radial wall portion 62 so that the contact surface 66 forms the apex of the pad 65. Therefore, the pad 65 jointly forms the composite contact surface 66 that engages with the top surface 13 of the container neck portion 11.

Therefore, the extension portion of the preform extends from the contact surface to the top of the top wall. The effective height of the plug is from the base of the side wall to the top of the top wall, and the height of the entire plug is from the base of the temper evidence band to the top of the top wall. In this embodiment, the extension is about 35% of the effective height of the plug and about 30% of the total height of the plug.

The sealing system 7 has an internal olive sealing portion 70 that hangs down from the connecting portion of the axial wall portion 61 of the intermediate wall 6 and the radial wall portion 62, and together with the axial wall portion 61 so as to provide an extension portion. It is almost consistent. The olive sealing portion 70 has a substantially cylindrical shape, and has an inner surface 71 that is continuous and substantially parallel to the inner surface of the axial wall portion 61 and beads 72 that protrude outward adjacent to the free end portion at the lower end thereof. Have. Further, the olive sealing portion 70 has a tapered outer pull-in portion 73 extending from the free end portion at the lower end thereof to the beads 72, and engages with the inner edge portion of the top surface 13 of the container neck portion 11. Further, the sealing system has an outer annular sealing portion 74 and engages with the outer surface 14 of the container neck portion 11. The outer sealing portion 74 is adjacent to the second shoulder portion 64 connecting the radial wall portion 62 and the side wall 5 with a gap.

When the stopper 1 is attached to the container neck 11, as shown in FIG. 5, the central portion of the top surface 13 of the container neck 11 comes into contact with the composite contact surface 66 formed by the pad 65. The sealing system 7 seals both the inside and the outside of the container neck 11. More specifically, the beads 72 of the olive sealing portion 70 seal the inner surface 15 of the container neck 11, and the outer sealing portion 74 seals the outer surface 14 of the container neck 11.

The pad 65 is located at an intermediate position between the olive sealing portion 70 and the outer sealing portion 74, and its side surface is inclined to the sealing portions 70 and 74, but the sealing portions 70 and 74 are spaced from the pad 65. It is connected to the radial wall portion 62 at a position spaced apart from the sealing portions 70 and 74 so as to be deformed around a continuous annular hinge portion provided with the above. As a result, when the pad is connected to the base of the sealed portions 70 and 74, the sealed portions 70 and 74 are uniformly deformed all around the pad 65, avoiding the formation of a locally thick portion in the region of the pad 65. Make sure that.

The outer notch or shaft rib 8 has a first rib group 80 and a second rib group 81 in an alternating state, and each second rib 81 is arranged between each pair of the first rib 80. ing. The widths of the first and second ribs 80 and 81 are substantially the same, but the first rib 80 is longer than the second rib 81. The first rib 80 extends from the top wall 4 to the ring 82 at the lower end of the side wall 5.
The second rib 81 extends from the intermediate wall 6 to the ring 82 at the lower end of the side wall 5. The first rib 80 has a quadrant 83 extending from the outer surface of the annular step portion 60 formed by the intermediate wall 6. Thereby, the first rib 80 provides a grip mechanism extending over the entire length of the main body 2 of the stopper, covers the step portion 60, and exhibits the same overall profile as the conventional stopper 1.

However, in order to mold the first rib 80, a corresponding protrusion on the molding surface of the mold (not shown) is required. The depth of the first rib 80 imposes some restrictions on the spacing required for the mold for proper cooling and mitigation of the effects of damage to the protrusions on the mold surface. In order to increase the density of the rib 8, the second rib 81 having an end at the annular step portion 60 and not having the quarter circle portion 83 is provided between the first ribs 80. As a result, the density of the rib 8 on the side wall 5 is twice as high as the density around the annular step portion 60, and the grip property of the side wall 5 is improved.

Alternatively, embodiments of the present technology may be summarized as the following numbered sections.

(Section 1)
A stopper (1) for sealing the neck opening of the container.
A cylindrical body (2) having a closed end (20) and an open end (21),
An annular tamper evidence band (3) ruptibly connected to the open end (20) of the main body (2), and
The tamper evidence band (3) includes a plurality of fastening cams (31), each of the plurality of fastening cams (31) protrudes from its inner surface (30), and the container neck (11) opens the main body during use. A retractable lamp (32) that engages the flange (12) of the neck (11) when inserted into the end (21) and engages the flange (12) when the stopper (1) is removed from the container. The pull-in lamp (32) at least one in the plurality of fastening cams (31) has a stop portion (33) for separating the tamper evidence band (3) from the main body (2). A stopper (1) configured to have a recess (34).

(Section 2)
The stopper according to item 1, wherein the recess (34) is located at the center of the retractable lamp (32) and is provided at intervals so as to abut the flange (12) of the container neck (11). A stopper (1) configured to define only two or more lamp portions (35).

(Section 3)
The stopper according to item 2, wherein at least a part of the recess (34) between the lamp portions (35) is continuous or coplanar with the inner surface (30) of the tamper evidence band (3). A stopper configured to.

(Section 4)
The plug according to item 2 or 3, wherein the stop portion (33) is oriented in the direction of the closed end (20), and the lamp portions (35) provided at the above intervals are provided. A stopper configured to be hung.

(Section 5)
The stopper according to item 4, wherein the at least one cam (31) has a substantially U-shape, and each lamp portion (35) is attached to an open end (10) of the tamper evidence band (3). Spacing lamps that have a ramp surface (35a) that is inclined towards and abuts the flange (12) of the container neck (11), with the stop (33) engaging the flange. A stopper configured to have a substantially radial surface (33a) overlying the portion.

(Section 6)
The stopper according to any one of items 2 to 5, wherein each lamp portion (35) is directed from the stop portion (33) toward the open end (10) of the tamper evidence band (3). A stopper configured to have a tapered side surface (35b).

(Section 7)
The stopper according to any one of items 2 to 6, wherein the recess (34) has a fan-shaped portion formed by removing a molding material from the cam (31). plug.

(Section 8)
The stopper according to any one of paragraphs 1 to 7, wherein the top wall (4) defining the closed end (20) and the main body (2) hanging from the top wall (4). ) Has an annular side wall (5) that defines the open end (21), and the side wall (5) includes a screw thread (50) having two or more turns (51, 52, 53). Each circumference of the winding has a plurality of discontinuities (56) forming an axial air passage, and one of the windings (51, 52, 53) is the other winding (51, 52, 53). A stopper configured to have a continuous portion (55) that is axially aligned with the discontinuous portion (56) of the.

(Section 9)
The stopper according to item 8, wherein the top wall (4) hangs down from the stopper and has a contact surface (66) that abuts on the top surface (13) of the container neck (11). A stopper configured to have (6, 65).

(Section 10)
The plug according to item 9, wherein the contact portions (6, 65) are a plurality of protruding portions (6, 65) that hang down from the top wall (4) and are provided at intervals in the peripheral direction of the top wall. 65), each protruding portion (65) is a stopper configured to form a part (66) of the contact surface (66).

(Section 11)
The plug according to item 9 or 10, having an intermediate wall (6) between the side wall (5) and the periphery of the top wall (4), and the top wall (4) is the th. The annular side wall (5) has one diameter (D1), the annular side wall (5) has a second diameter (D2) larger than the first diameter (D1), and the intermediate wall (6) is around the top wall (4). It has an annular step portion having a first axial portion (61) hanging from the surface and a second radial portion (62) connecting the lower end of the first axial portion (61) to the annular side wall (5). , The radial portion (62) is a stopper configured to include the abutting portion or the abutting surface (66).

(Section 12)
In the case of the plug according to the eleventh item, in the case of quoting the tenth item, the protruding portion (65) hangs down from the radial portion (62) and is provided at intervals in the peripheral direction of the radial portion. A stopper configured to be.

(Section 13)
The plug according to item 12, wherein the inner annular sealing portion (70) hangs down from the inside of the radial portion (62) and the outer annular sealing portion (70) hanging from the outer or intermediate portion of the radial portion (62). It has a portion (74), and the protruding portion (65) is configured to be provided between the inner and outer sealing portions (70, 74) at intervals from the inner and outer sealing portions, respectively. Plugged.

(Section 14)
The stopper according to the twelfth or thirteenth paragraph, wherein each protrusion (65) is configured to taper from the radial portion (62) toward its abutting surface (66). plug.

(Section 15)
The stopper according to any one of items 11 to 14, further comprising a plurality of axially external ribs (8) including the first and second ribs (80, 81), and the first rib (8). 80) is a stopper configured to be longer than the second rib (81).

(Section 16)
Item 5. The first rib (80) extends from the top wall (4) toward the base of the side wall (5), and the second rib (81) extends from the top wall (4) toward the base of the side wall (5). A stopper configured to extend from the intermediate wall (6) toward the base of the side wall (5).

(Section 17)
The plug according to item 15 or 16, wherein each second rib (81) is configured to be provided between the paired first ribs (80).

(Section 18)
The plug according to any one of paragraphs 9 to 17, from the extension portion from the contact surface (66) to the top of the top wall (4) and the base of the side wall (5). A stopper having an effective plug height up to the top of the top wall (4), and the extension portion being configured to be at least 10% of the effective plug height.

(Section 19)
The plug according to item 18, wherein the extension portion is configured to be at least 25% of the effective plug height.

(Section 20)
The plug according to items 18 to 19, wherein the plug has the height of the entire plug from the base of the tamper evidence band (3) to the top of the top wall (4), and the extension portion is the plug. A stopper configured to be at least 10% of the total height.

(Section 21)
The stopper according to claim 20, wherein the extension portion is configured to be at least 20% of the height of the entire stopper.

(Section 22)
The stopper according to the first paragraph, the top wall (4) defining the closed end (20) and the open end (21) of the main body (2) hanging from the top wall (4) are drawn. It has an annular side wall (5), an intermediate wall (6) between the side wall (5) and the periphery of the top wall (4), and a plurality of axial outer ribs (8). The wall (4) has a first diameter (D1), the annular side wall (5) has a second diameter (D2) larger than the first diameter (D1), and the intermediate wall (6) has the apex. An annular having a first axial portion (61) hanging from the periphery of the wall (4) and a second radial portion (62) connecting the lower end of the first portion (61) to the annular side wall (5). The second radial portion has a step portion (60), the second radial portion has a plurality of protrusions (65) hanging from the step portion (60), and the plurality of protrusions are spaced around the second radial portion. A contact surface (66) is provided and abuts on the top surface (13) of the container neck (11), and the side wall (5) is wound two or more turns (51, 52, 53). Each circumference of the winding (51, 52, 53) has a plurality of discontinuities (56) forming an axial ventilation path, and is one of the windings. Has a continuous portion (55) that is axially aligned with the discontinuous portion (56) of the other winding (51, 52, 53), and the plurality of ribs (8) are from the top wall (40). The second rib (80) includes a first rib (80) extending toward the base of the side wall (5) and a second rib (81) provided between each pair of the first rib (80). (81) is a stopper shorter than the first rib (80) and extending from the intermediate wall (6) toward the base of the side wall (5).

(Section 23)
A stopper (1) for sealing the neck opening of the container.
It has a top wall (4) and an annular side wall (5) that hangs down from the top wall (4).
The top wall (4) has contact portions (6, 65) that hang down from the top wall (4), and is provided at intervals around the top wall (4), and is provided on the top surface (11) of the container neck (11). The contact portion has a plurality of projecting portions (65) forming a composite contact surface (66) that abuts on 13), and the side wall (5) has two or more turns (51, 52, 53). Each circumference of the winding (51, 52, 53) has a plurality of discontinuities (56) forming an axial air passage, and at least one winding has a screw thread (50). A stopper (1) characterized by having a continuous portion (55) that is axially aligned with a discontinuous portion (56) of another winding (51, 52, 53).

(Section 24)
A stopper (1) for sealing the neck opening of the container.
A plurality of a top wall (4), an annular side wall (5) hanging from the top wall (4), and an intermediate wall (6) between the side wall (5) and the periphery of the top wall (4). The top wall (4) has a first diameter (D1), and the annular side wall (5) has a second diameter (D1) larger than the first diameter (D1). The intermediate wall (6) has a D2), and the intermediate wall (6) has a first axial portion (61) hanging from the periphery of the top wall (4), and the annular side wall (5) of the first portion (61). It has an annular step portion (60) having a second radial portion (62) connecting the lower ends, and the plurality of ribs (8) are directed from the top wall (4) toward the base of the side wall (5). The second rib (81) includes the extending first rib (80) and the second rib (81) provided between each pair of the first rib (80), and the second rib (81) is the first rib (80). ), And a stopper (1) extending from the intermediate wall (6) toward the base of the side wall (5).

(Section 25)
A mold stack comprising a plurality of molding inserts that together form a molding cavity for molding the stopper (1) according to any one of paragraphs 1 to 24 at the time of molding arrangement.

(Section 26)
A mold comprising the molding stack according to item 25.

(Section 27)
A molding system comprising the mold according to item 26.

Those skilled in the art will appreciate that it can be delivered to some modifications to the above embodiments without departing from the scope of the invention. Those skilled in the art will appreciate that a number of combinations of the above configurations and / or the configurations shown in the accompanying drawings have been effective against the prior art and are therefore within the scope of the invention described herein. Let's do it.

Claims (23)

A stopper for sealing the neck opening of the container.
A cylindrical body with a closed end and an open end,
An annular tamper evidence band fragilely connected to the open end of the body.
The tamper evidence band comprises a plurality of fastening cams, each of which projects from its inner surface and engages the flange of the neck when the container neck is inserted into the open end of the body during use. It has a pull-in lamp and a stop that engages the flange to separate the tamper evidence band from the body when the plug is removed from the container, and at least one of the plurality of fastening cams said. The lead-in lamp has recesses that define two or more lamp portions, and each lamp portion absorbs an increase in pressure applied by the flange when the flange rides on the lamp portion. so as the width of the lamp unit is widened, plug, characterized in that it has a side toward the opening of the stopper tapers towards each other from said stop portion. The plug according to claim 1, wherein at least a part of the recesses between the lamp portions is continuous or coplanar with the inner surface of the tamper evidence band. A plug according to claim 1 or 2, characterized in that said stop portion is provided by rack the are oriented in the direction of the closed end, said lamp unit provided at a interval A stopper. The stopper according to claim 3, wherein the at least one cam is substantially U-shaped, and each lamp portion is inclined toward the open end of the tamper evidence band, and is in contact with the flange of the container neck portion. contact has a ramp surface, wherein the retaining portion is engaged with the flange, stopper, characterized in that it has a substantially radial face of Qasr the lamp portion provided at intervals. The stopper according to any one of claims 1 to 4, wherein the recess has a fan-shaped portion formed by removing a molding material from the cam. The plug according to any one of claims 1 to 5 , which has a top wall that defines the closed end and an annular side wall that hangs down from the top wall and defines the open end of the main body. The side wall is provided with threads having two or more turns, each turn having a plurality of discontinuities forming an axial vent, one of which is the other. A stopper having a continuous portion that is axially aligned with the discontinuous portion of the stopper. The plug according to claim 6, wherein the top wall has a contact portion that hangs down from the top wall and has a contact surface that comes into contact with the top surface of the neck of the container. The plug according to claim 7, wherein the contact portion has a plurality of protrusions that hang down from the top wall and are provided at intervals in the peripheral direction of the top wall, and each protrusion has the protrusion. A stopper characterized in that it forms a part of the contact surface. The plug according to claim 8 , wherein the stopper has an intermediate wall between the side wall and the periphery of the top wall, the top wall has a first diameter, and the annular side wall is larger than the first diameter. The intermediate wall has an annular step portion having two diameters, a first axial portion hanging from the periphery of the top wall, and a second radial portion connecting the lower end of the first axial portion to the annular side wall. a, said radial section plug which comprises a pre-Symbol abutment surface. The plug according to claim 9, wherein the protruding portion hangs down from the radial portion and is provided at intervals in the peripheral direction of the radial direction portion. The plug according to claim 10, further comprising an inner annular sealing portion hanging from the inside of the radial portion and an outer annular sealing portion hanging from the outer or intermediate portion of the radial portion, and the protruding portion. Is a stopper provided between the inner and outer sealing portions at a distance from each of the inner and outer sealing portions. The stopper according to claim 10 or 11, wherein each protruding portion is tapered from the radial portion toward the contact surface thereof. The plug according to any one of claims 9 to 12, characterized in that it includes a plurality of axially external ribs including the first and second ribs, and the first rib is longer than the second rib. A stopper. 13. The stopper according to claim 13, wherein the first rib extends from the top wall toward the base of the side wall, and the second rib extends from the intermediate wall toward the base of the side wall. A stopper characterized by being present. The stopper according to claim 13 or 14, wherein each second rib is provided between the paired first ribs. The plug according to any one of claims 7 to 15, the extension portion from the contact surface to the top of the top wall, and the effective plug height from the base of the side wall to the top of the top wall. The extension portion is at least 10% of the effective plug height. The plug according to claim 16, wherein the extension portion is at least 25% of the effective plug height. The plug according to claim 16 or 17, having the height of the entire plug from the base of the tamper evidence band to the top of the top wall, the extension of which is at least 10% of the height of the entire plug. A stopper characterized by being. The stopper according to claim 18, wherein the extension portion is at least 20% of the height of the entire stopper. The plug according to claim 1, wherein the top wall defining the closed end, an annular side wall hanging from the top wall and defining the open end of the main body, and the periphery of the side wall and the top wall. It has an intermediate wall in between and a plurality of axial outer ribs, the top wall having a first diameter, the annular side wall having a second diameter larger than the first diameter, and the intermediate wall having a second diameter. The second radial direction portion has an annular step portion having a first axial direction portion hanging from the periphery of the top wall and a second radial direction portion connecting the lower end of the first axial direction portion to the annular side wall. Has a plurality of projecting portions that hang down from there and are provided at intervals on the peripheral edge thereof and have an abutting surface that abuts on the top surface of the neck of the container, and the side wall is wound in two or more turns. Each circumference of the winding has a plurality of discontinuities forming an axial air passage, and one of the windings is axially aligned with the discontinuity of the other winding. The plurality of ribs have a continuous portion, and the plurality of ribs are provided between a first rib extending from the top wall toward the base of the side wall and a second rib provided between each pair of the first ribs. The second rib is shorter than the first rib and extends from the intermediate wall toward the base of the side wall. A mold stack comprising a plurality of molding inserts that together form a molding cavity for molding the stopper according to any one of claims 1 to 20 at the time of molding arrangement. A mold comprising the molding stack according to claim 21. A molding system comprising the mold according to claim 22.

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