JP2011143942A - Synthetic resin container lid and combination of the lid and container - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To sufficiently and surely prevent slipping-out in which locking means resiliently gets over a locking jaw part to which the locking means locks and elevates from occurring without excessively increasing a necessary initial torque when an opening neck part is opened and without breaking a breaking line. <P>SOLUTION: Above the locking means 30 on the inner peripheral face of a tamper evident skirt part 20, a loosely fitting upper part 34 with an inner diameter of d1 and a fitting lower part 36 with an inner diameter of d2 smaller than d1 are arranged. Under a condition that a container lid is mounted on the opening neck part 40 of the container as required, and the opening neck part 40 is closely sealed, the loosely fitting upper part 34 of the tamper evident skirt part 20 is positioned by opposing the locking jaw part 44 of the opening neck part 40, and the tamper evident skirt part 20 becomes to a loosely fitting condition to the locking jaw part 44. When the container lid rotates in some extent in the opening rotating direction and the container lid is elevated to the opening neck part 40, the fitting lower part 36 of the tamper evident skirt part 20 is positioned opposing the locking jaw part 44, and tightely fitted to the locking jaw part 44. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention provides a synthetic resin container lid in which a locking means is disposed on the inner peripheral surface of the tamper evidence hem, and a locking jaw portion on the outer peripheral surface of the synthetic resin container lid and the mouth and neck. It relates to a combination with a formed container.

  As is well known, a combination of a container formed of glass, a synthetic resin or a metal thin plate and a container lid formed of a synthetic resin is widely used for beverages. The container has a cylindrical mouth-and-neck portion, and a male thread and a locking jaw portion positioned below the male thread are formed on the outer peripheral surface of the mouth-and-neck section. On the other hand, the container lid has a circular top wall and a cylindrical skirt wall depending from the periphery of the top wall. A rupture line extending in the circumferential direction is formed on the skirt wall, and the skirt wall is divided into a main part above the break line and a tamper evidence skirt below the break line. A female thread is formed on the inner peripheral surface of the main part of the skirt wall and is screwed into the male thread of the mouth and neck. Locking means are provided on the inner peripheral surface of the skirt wall tamper evidence hem. It is arranged.

  After filling the container with the beverage, the container lid is fitted over the mouth and neck of the container, the container lid is rotated in the closing direction, and the female thread of the container lid is screwed into the male thread of the mouth and neck. Attach a container lid to the neck and seal the mouth and neck. The locking means disposed on the skirt wall tamper-evidence skirt elastically rides over the locking jaw of the mouth and neck and is positioned below the locking jaw. When the mouth and neck are opened and the beverage is consumed, the container lid is rotated in the opening direction. In this way, the container lid is raised with respect to the mouth-and-neck portion according to the release of the screwing between the female screw and the male screw. When the container lid is lifted somewhat, the locking means arranged at the skirt wall tamper-evidence skirt is locked to the bottom of the mouth-neck locking jaw, thereby tamper-evident. The skirt is prevented from rising. When the container lid continues to rotate in the opening direction, the break line is broken by the stress generated in the break line formed on the skirt wall, and the tamper evidence skirt of the skirt wall is separated from the main part (or When an axial break line is formed at the tamper evidence hem, the tamper evidence hem is developed from an endless annular shape to an end-band by breaking the axial break line, and the tamper evidence skirt is the main part. And continue to be connected to the main part in a part of the circumferential direction without being completely separated). When the container lid continues to rotate in the opening rotation direction, the tamper evidence hem remains, and the container lid (or the entire container lid including the tamper evidence hem) is detached from the mouth neck. Is released.

  Thus, the locking means disposed on the inner peripheral surface of the skirt wall tamper-evidence skirt has a plurality of protrusions protruding radially inward at intervals in the circumferential direction and continuous in the circumferential direction. However, the projecting amount of the protrusion or the protrusion in the radial direction is excessive so-called unreasonable removal at the time of separation from the mold. In order to avoid this, it is limited to a relatively small value. Therefore, when opening the mouth and neck, the engagement of the locking means with the locking jaw of the mouth and neck becomes insufficient, and the locking means elastically locks the locking jaw without breaking the breaking line. There is a tendency that a so-called slipping out that rises over the target is generated. In order to prevent such slipping-out, in Patent Document 1 below, the inner diameter of the portion above the locking means on the inner peripheral surface of the tamper evidence skirt is defined as the outer diameter of the locking jaw of the mouth and neck. The inner surface of the tamper evidence hem is tightly fitted to the outer surface of the locking jaw above the locking means, thereby elastically deforming or displacing the tamper evidence hem. Is suppressed.

Japanese Utility Model No. 5-13735

  According to the experience of the present inventors, as disclosed in the above-mentioned Patent Document 1, in the state where the container lid is attached to the mouth and neck as required and the mouth and neck are sealed, the tamper evident skirt of the skirt wall If the inner peripheral surface of the part is tightly fitted to the locking jaw part of the mouth / neck part, the initial torque required to rotate the container lid in the opening direction to open the mouth / neck part will be excessive, and it will be opened for children or women. Operation tends to be quite difficult.

  The present invention has been made in view of the above-mentioned facts, and the main technical problem thereof is that the locking means can be locked by the locking jaw without breaking the breaking line without excessively increasing the initial torque required for opening. By providing a new and improved synthetic resin container lid and a combination of such a synthetic resin container lid and a container, which can sufficiently prevent the slipping off that rises over elastically. is there.

  As a result of diligent research and experiments, the present inventors have found that the loose fitting upper part with the inner diameter d1 and the fitting with the inner diameter d2 smaller than d1 above the locking means on the inner peripheral surface of the tamper evidence skirt. In the state where the lower part is installed and the container lid is attached to the mouth and neck of the container as required, and the mouth and neck are sealed, the loosely fitted upper part of the tamper evident hem is the locking jaw of the mouth and neck. The tamper-evidence hem part is placed in a loosely fitted state with respect to the locking jaw part, but the container lid is slightly rotated in the opening rotation direction and the container lid is raised with respect to the mouth and neck. And the above-mentioned main technical problem can be achieved by allowing the fitting lower part of the tamper evidence hem part to be opposed to the locking jaw part and to be fitted into the locking jaw part. I found.

That is, according to the position aspect of the present invention, the synthetic resin container lid for achieving the main technical problem includes a circular top wall and a cylindrical skirt wall depending from the periphery of the top wall, and the skirt wall A rupture line extending in the circumferential direction is formed on the skirt wall, and the skirt wall is divided into a main portion above the rupture line and a tamper evidence skirt below the rupture line. In a synthetic resin container lid in which a female thread is formed on the peripheral surface, and a locking means is disposed on the inner peripheral surface of the tamper evidence skirt,
Above the locking means on the inner peripheral surface of the tamper evidence skirt, a loose fitting upper part having an inner diameter d1 and a fitting lower part having an inner diameter d2 are disposed, and the inner diameter d2 has an inner diameter d1. A synthetic resin container lid is provided which is smaller than (d2 <d1).

According to another aspect of the present invention, the combination of the container for achieving the main technical problem and the synthetic resin container lid has a cylindrical mouth and neck portion, and the outer peripheral surface of the mouth and neck portion is male. A container in which a locking jaw portion positioned below the thread and the male thread is formed; and a synthetic resin container lid attached to the mouth-neck portion of the container, wherein the circular top wall and the ceiling A cylindrical skirt wall depending from the periphery of the face wall, and a rupture line extending in the circumferential direction is formed in the skirt wall, the skirt wall being a main part above the break line and below the break line A female thread that is threadedly engaged with the male thread of the mouth-and-neck part is formed on the inner peripheral surface of the main part. A synthetic resin container in which locking means cooperating with the locking jaw portion of the mouth-neck portion is disposed on the inner peripheral surface In combination with,
A loose fitting upper portion having an inner diameter d1 and a fitting lower portion having an inner diameter d2 are disposed above the locking means on the inner peripheral surface of the tamper evidence skirt of the synthetic resin container lid. The inner diameter d2 is smaller than the inner diameter d1 (d2 <d1), and d1 ≧ D and d2 <D with respect to the outer diameter D of the locking jaw of the mouth-neck portion,
In a state where the female thread of the synthetic resin container lid is screwed onto the male thread of the mouth and neck and the synthetic resin container lid is attached to the mouth and neck and the mouth and neck are sealed, The loose fitting upper portion of the tamper evidence hem is opposed to the locking jaw portion of the mouth and neck portion and is located radially outward of the locking jaw portion, and the fitting lower portion of the tamper evidence skirt portion Is located below the locking jaw of the mouth and neck,
A combination characterized by this is provided.

  Preferably, 0 mm ≦ (d1−D) ≦ 0.4 mm, and 0 mm <(D−d2) ≦ 0.5 mm. In a state where the female thread of the synthetic resin container lid is screwed onto the male thread of the mouth and neck and the synthetic resin container lid is attached to the mouth and neck and the mouth and neck are sealed, It is preferable that the axial distance L1 between the lower surface of the locking jaw portion of the mouth-and-neck portion and the upper end edge of the fitting lower portion on the inner peripheral surface of the tamper evidence skirt is 0.1 to 0.7 mm. is there. It is preferable that the axial length L2 of the fitting lower portion on the inner peripheral surface of the tamper evidence skirt is 0.3 to 0.7 mm. It is preferable that a boundary portion having an inverted frustoconical shape in which an inner diameter gradually decreases downward is provided between the loose fitting upper portion and the fitting lower portion on the inner peripheral surface of the tamper evidence skirt. . Conveniently, the skirt wall of the synthetic resin container lid has a thick upper portion and a thin lower portion, and the break line is disposed in the thin lower portion.

  In the present invention, in a state where the container lid is attached to the mouth / neck portion of the container as required and the mouth / neck portion is sealed, the loosely fitting upper portion of the tamper evidence hem portion faces the locking jaw portion of the mouth / neck portion. The tamper evidence hem is loosely fitted to the locking jaw, thus avoiding the excessive initial torque required for opening and avoiding the container lid somewhat in the opening rotation direction. When the container lid is raised with respect to the mouth and neck by being rotated, the lower fitting portion of the tamper evidence hem is positioned against the locking jaw and is placed in an interference fit with the locking jaw. Therefore, it is possible to reliably prevent the slipping-off where the locking means rises elastically over the locking jaw without breaking the breaking line.

The front view which shows a suitable embodiment of the synthetic resin container lid comprised according to this invention in part in a cross section. The front view which shows the state which mounted | wore the mouth neck part of the container with the container lid of FIG. FIG. 3 is an enlarged partial sectional view showing a part of FIG. 2 in an enlarged manner. FIG. 4 is an enlarged partial cross-sectional view similar to FIG. 3 in a state where the container lid is rotated somewhat in the opening rotation direction from the state shown in FIGS. 2 and 3. The diagram which shows the fluctuation | variation of the required torque in an Example and a comparative example.

  Hereinafter, a preferred embodiment of a synthetic resin container lid constructed according to the present invention and a combination of such a container lid and a container will be described in detail with reference to the accompanying drawings.

  Referring to FIG. 1, a container lid 2 that can be injection-molded or compression-molded from a suitable synthetic resin such as polyethylene or polypropylene includes a circular top wall 4 and a cylindrical skirt depending from the periphery of the top wall 4. Wall 6. A cylindrical inner seal piece 8 that hangs downward and a cylindrical outer seal piece 10 that also hangs downward are formed on the inner peripheral edge of the top wall 4. Further, a relatively small annular protrusion 9 is formed between the inner seal piece 8 and the outer seal piece 10.

  The skirt wall 6 has a relatively thick thick upper portion 12 and a relatively thin thin thin portion 14. A rupture line 16 extending in the circumferential direction is formed at the upper end of the thin lower portion 14, and the skirt wall 6 is divided into a main portion 18 above the rupture line 16 and a tamper evidence skirt 20 below the rupture line 16. Has been. In the illustrated embodiment, the breaking line 16 includes a plurality of slits (cut grooves) 22 extending in the circumferential direction at intervals in the circumferential direction and a plurality of bridge portions 24 remaining between the slits 22. The tamper evidence skirt portion 20 is connected to the main portion 18 via a plurality of bridging portions 24.

  On the outer peripheral surface of the main portion 18 of the skirt wall, a non-slip knurl 26 is formed which is formed of uneven shapes alternately present in the circumferential direction. Three female threads 28 are formed on the inner peripheral surface of the main portion 18 of the skirt wall 6. The three female threads 28 are disposed at an angular interval of 120 degrees, and each of the three female threads 28 extends over an angle range of approximately 160 degrees. Locking means 30 is disposed on the inner peripheral surface of the tamper evidence skirt 20. In the illustrated embodiment, the locking means 30 is formed of five protrusions 32 that are disposed at intervals in the circumferential direction and extend in the circumferential direction. The longitudinal cross-sectional shape of each main portion (portion excluding both end portions) of the protrusion 32 is a substantially right triangle shape, and has an upper surface extending radially inward substantially horizontally.

  3 will be described with reference to FIG. 1 along with FIG. 1, the loosely fitting upper portion 34 and the fitting lower portion 36 are disposed above the locking means 30 on the inner peripheral surface of the tamper evidence skirt portion 20. It is important that It is also important that the loose fitting upper part 34 has an inner diameter d1, the lower fitting part 36 has an inner diameter d2, and the inner diameter d2 is smaller than the inner diameter d1 (d2 <d1). In the illustrated embodiment, a boundary portion 38 having an inverted frustoconical shape whose inner diameter gradually decreases downward exists between the loose fitting upper portion 34 and the fitting lower portion 36.

  FIG. 2 also shows the container neck 40 of the container together with the container lid 2. The mouth and neck part 40 of the container which can be formed from a suitable synthetic resin such as polyethylene terephthalate, glass or metal thin plate has a cylindrical shape as a whole, and three male threads are provided on the outer peripheral surface of the mouth and neck part 40. 42 and a locking jaw 44 positioned below the male thread 42 are formed. The three male threads 42 are formed to correspond to the three female threads 28 in the container lid 2, and are arranged at an angular interval of 120 degrees and extend over an angular range of approximately 160 degrees. It is present. The locking jaw 44 has a frustoconical upper surface 46 whose outer diameter gradually increases downward, a cylindrical outer peripheral surface 48, and a lower surface 50 extending substantially horizontally. Further provided on the outer peripheral surface of the mouth-and-neck portion 40 is a support ring 52 positioned below the locking jaw 44 (the support ring 52 is used for transporting containers as is well known to those skilled in the art). ing.

  When the container lid 2 is attached to the mouth and neck portion 40 after the contents are filled in the container and the mouth and neck portion 40 is sealed, the container lid 2 is fitted on the mouth and neck portion 40 and the container lid 2 is closed. 2, the female screw 28 of the container lid 2 is screwed onto the male screw 42 of the mouth / neck portion 40. When the female thread 28 is screwed onto the male thread 42 until the state shown in FIG. 2, the inner seal piece 8 of the container lid 2 enters the mouth neck 40 and is brought into close contact with the inner peripheral surface of the mouth neck 40. The annular ridge 9 is brought into intimate contact with the top surface of the mouth and neck portion 40, and the outer seal piece 10 is brought into intimate or close proximity to the outer peripheral surface of the mouth and neck portion 40, thus sealing the mouth and neck portion 40. The locking means 30 disposed on the inner peripheral surface of the tamper evidence skirt 20 elastically moves the locking jaw 44 of the mouth and neck 40 (that is, by elastic deformation or displacement of the tamper evidence skirt 20). It gets over and is located below the locking jaw 44.

  3 and FIG. 3, the description will be continued with reference to FIG. 2 and FIG. 3, in the state where the container lid 2 is attached to the mouth and neck portion 40 as required, that is, as shown in FIG. 2 and FIG. It is important that the loosely fitting upper portion 34 on the inner peripheral surface of the locking neck portion 40 is positioned opposite to the outer peripheral surface 48 of the locking jaw portion 44 in the mouth-and-neck portion 40. The inner diameter d1 of the upper portion 34 is d1 ≧ D, preferably 0 mm ≦ (d1−D) ≦ 0.4 mm, and the loosely fitting upper portion 34 is loosely fitted to the locking jaw portion 44, that is, substantially separated without being closely contacted. It is important that it is (including a simple contact state). Then, in the state shown in FIGS. 2 and 3, in the state illustrated in FIGS. 2 and 3, from the viewpoint of the necessary torque for opening the mouth / neck portion 40 and the rotation angle of the container lid 2 until the breaking line 16 starts to break as described later. The axial distance L1 between the lower surface 50 of the locking jaw 44 of the neck 40 and the upper edge of the fitting lower portion 36 on the inner peripheral surface of the tamper evidence skirt 20 is 0.1 to 0.7 mm (L1 = 0. 1 to 0.7 mm), and the axial length L2 of the fitting lower portion 36 on the inner peripheral surface of the tamper evidence skirt 20 is 0.3 to 0.7 mm (L2 = 0.3 to 0.7 mm).

When opening the mouth and neck portion 40 to consume the contents, the container lid 2 is rotated in the opening direction, that is, counterclockwise as viewed from above in FIG. At the initial stage of such rotation, as can be understood from the examples and comparative examples described later, the loosely fitting upper portion 34 on the inner peripheral surface of the tamper evidence skirt 20 is loosely fitted to the locking jaw 44 of the mouth and neck portion 40. Therefore, the required initial torque does not become excessive. When the container lid 2 is slightly rotated in the opening rotation direction and the container lid 2 is raised to the position shown in FIG. 4 with respect to the mouth-and-neck portion 40, the container lid 2 is disposed on the inner peripheral surface of the tamper evidence skirt 20. The upper end surface of the protrusion 32 constituting the locking means 30 is in contact with the lower surface 50 of the locking jaw portion 44 of the mouth-and-neck portion 40, and the fitting lower portion 36 on the inner peripheral surface of the tamper-evident hem portion 20 is the mouth. It is located opposite to the outer peripheral surface 48 of the locking jaw 44 of the neck 40. The inner diameter d2 of the fitting lower portion 36 is d2 ≦ D, preferably 0 mm <(D−d2) ≦ 0.5 mm, with respect to the outer diameter D of the locking jaw portion 44, and the outer peripheral surface 48 of the locking jaw portion 44. However, it is important that the fitting lower portion 36 is in an interference fit state. When the container lid 2 is further rotated in the opening direction from the state shown in FIG. 4, the locking means 30 of the container lid 2 is locked to the locking jaw portion 44 of the mouth-and-neck portion 40. Ascending of the skirt 20 is prevented, and stress is generated in the breaking line 16, more specifically, the bridge 24 thereof. Is done. When the breaking line 16 is broken, the fitting lower portion 36 on the inner circumferential surface of the tamper evidence skirt 20 is tightly fitted to the outer circumferential surface 48 of the locking jaw portion 44 of the mouth / neck portion 40. Therefore, the elastic deformation or displacement of the tamper evidence skirt 20 is suppressed, and it is sufficiently reliably avoided that the locking means 30 rises over the locking jaw 44 without breaking the breaking line 16. Is done. After the break line 16 is broken and the tamper evidence skirt 20 is separated from the main portion 18 of the skirt wall 6, the tamper evidence skirt of the container lid 2 according to the rotation of the container lid 2 in the opening direction. The portion excluding 20 is raised, the tamper evidence skirt 20 is left in the mouth and neck portion 40, the container lid 2 is detached from the mouth and neck portion 40, and the mouth and neck portion 40 is thus opened.

  In the illustrated embodiment, when the mouth and neck portion 40 is opened, the breaking line 16 is broken over the entire circumferential direction, and the tamper evident skirt portion 20 is completely separated from the main portion 18 of the skirt wall 6. However, if desired, an additional break line extending in the axial direction is formed in the tamper evidence skirt 20, and when opening the mouth neck 40, the bridge portion in the break line 16 remains without being locally broken. As a result, the tamper evidence skirt 20 continues to be connected to the main portion 18 of the skirt wall 6, the additional break line of the tamper evidence skirt 20 is broken, and the tamper evidence skirt 20 expands into a banded end shape. Thus, the locking of the locking means 30 with respect to the locking jaw 44 is released, and the entire container lid 2 including the tamper evidence skirt 20 can be detached from the mouth and neck 40.

  Example: Three container lids as shown in FIG. 1 were molded from polyethylene by injection molding. The nominal diameter of the molded container lid is 30 mm, the thickness of the thin-walled lower part of the skirt wall is 0.55 mm, and the inner diameter of the loosely fitting upper part on the inner peripheral surface of the tamper evidence hem part is d1 was 30.2 mm, the inner diameter d2 of the fitting lower part was 30 mm, and the axial length L2 of the fitting lower part was 0.45 mm.

  As described above, the container lid was attached to the mouth and neck as illustrated in FIG. 2 of the container molded from polyethylene terephthalate. The outer diameter D of the locking jaw of the mouth / neck was 30.2 mm. When the container lid is mounted on the mouth / neck portion as shown in FIG. 2, the lower surface of the locking jaw portion of the mouth / neck portion and the upper end edge of the lower fitting portion on the inner peripheral surface of the tamper evidence hem portion The axial direction distance L1 was 0.4 mm. Rotate the container lid attached to the mouth and neck in the opening rotation direction, break the break line of the container lid, leave the tamper evidence hem, and remove the remaining part of the container lid from the mouth and neck The relationship between the required torque fluctuation and the rotation angle of the container lid was measured by a rotational torque measuring device. The results obtained by measuring each of the three container lids and calculating the average are as shown in FIG. 5. The required initial torque was somewhat smaller than the required maximum torque for breaking the fracture line.

  Comparative Example: For comparison, the inner diameter of the portion above the locking means on the inner peripheral surface of the tamper evidence hem is all d2 (therefore there is no loose fitting upper part, and the portion above the locking means is Three container lids identical to those in the example except for the fitting part were formed. Then, in the same manner as in the example, the relationship between the fluctuation of the required torque and the rotation angle of the container lid was measured with a rotational torque measuring device. The results obtained by measuring each of the three container lids and calculating the average are as shown in FIG. 5, and the required initial torque is excessive and somewhat larger than the required maximum torque when breaking the fracture line.

2: Container lid 4: Top wall 6: Skirt wall 12: Thick upper part of skirt wall 14: Thin lower part of skirt wall 16: Break line 18: Main part of skirt wall 20: Tamper evidence hem part 28: Female thread 30: Locking means 34: Free fitting upper part 36: Lower fitting part 40: Mouth and neck part 44: Locking jaw part

Claims (10)

A circular skirt wall and a cylindrical skirt wall depending from the periphery of the top wall, and a rupture line extending in the circumferential direction is formed in the skirt wall, and the skirt wall is a main portion above the rupture line. And a tamper evidence bottom part below the break line, a female thread is formed on the inner peripheral surface of the main part, and a locking means is formed on the inner peripheral surface of the tamper evidence base part. In a synthetic resin container lid in which
Above the locking means on the inner peripheral surface of the tamper evidence skirt, a loose fitting upper part having an inner diameter d1 and a fitting lower part having an inner diameter d2 are disposed, and the inner diameter d2 has an inner diameter d1. Less than (d2 <d1),
A synthetic resin container lid.   The boundary part which has the shape of an inverted truncated cone with an inner diameter gradually decreasing downward exists between the loose fitting upper part and the fitting lower part on the inner peripheral surface of the tamper evidence bottom part. Synthetic resin container lid.   The synthetic resin container lid according to claim 1 or 2, wherein the skirt wall of the synthetic resin container lid has a thick upper portion and a thin lower portion, and the breaking line is disposed in the thin lower portion. A container having a cylindrical mouth-and-neck portion, and a male thread and a locking jaw portion located below the male thread on the outer peripheral surface of the mouth-and-neck, and the mouth-and-neck of the container A synthetic resin container lid attached to a section, comprising a circular top wall and a cylindrical skirt wall depending from the periphery of the top wall, and a rupture line extending in the circumferential direction is formed on the skirt wall The skirt wall is divided into a main portion above the break line and a tamper evidence skirt below the break line, and the inner peripheral surface of the main portion has A female thread that is screwed to the male thread is formed, and a locking means that cooperates with the locking jaw of the mouth and neck is disposed on the inner peripheral surface of the tamper evidence skirt. In combination with a synthetic resin container lid,
A loose fitting upper portion having an inner diameter d1 and a fitting lower portion having an inner diameter d2 are disposed above the locking means on the inner peripheral surface of the tamper evidence skirt of the synthetic resin container lid. The inner diameter d2 is smaller than the inner diameter d1 (d2 <d1), and d1 ≧ D and d2 <D with respect to the outer diameter D of the locking jaw of the mouth-neck portion,
In a state where the female thread of the synthetic resin container lid is screwed onto the male thread of the mouth and neck and the synthetic resin container lid is attached to the mouth and neck and the mouth and neck are sealed, The loose fitting upper portion of the tamper evidence hem is opposed to the locking jaw portion of the mouth and neck portion and is located radially outward of the locking jaw portion, and the fitting lower portion of the tamper evidence skirt portion Is located below the locking jaw of the mouth and neck,
A combination characterized by that.   The combination according to claim 4, wherein 0 mm ≦ (d1-D) ≦ 0.4 mm.   The combination according to claim 4 or 5, wherein 0 mm <(D-d2) ≤ 0.5 mm.   In a state where the female thread of the synthetic resin container lid is screwed onto the male thread of the mouth and neck and the synthetic resin container lid is attached to the mouth and neck and the mouth and neck are sealed, The axial distance L1 between the lower surface of the locking jaw portion of the mouth and neck portion and the upper end edge of the fitting lower portion on the inner peripheral surface of the tamper evidence skirt portion is 0.1 to 0.7 mm. The combination in any one of from 6.   The combination according to any one of claims 4 to 7, wherein an axial length L2 of the fitting lower part on the inner peripheral surface of the tamper evidence skirt is 0.3 to 0.7 mm.   A boundary portion having an inverted truncated cone shape in which an inner diameter gradually decreases downward is provided between the loose fitting upper portion and the fitting lower portion on the inner peripheral surface of the tamper evidence skirt portion. 9. A combination according to any one of 8   The combination according to any one of claims 1 to 8, wherein the skirt wall of the synthetic resin container lid has a thick upper portion and a thin lower portion, and the break line is disposed in the thin lower portion.

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