Easy-to-separate cap member

Abstract

To provide an easy separation cap member exhibiting excellent operability and moldability when being removed from a container body.SOLUTION: A body cap 10 comprising an easy separation cap member 1 according to the present invention comprises a fixing skirt part 11 fixed to an outer peripheral portion of a mouth neck part 31, and an attachment cylindrical wall part 12. In a cylindrical part 11B of the fixing skirt part 11, a linear engagement protrusion 11c is formed which is engaged with an engaged protrusion 31a provided on an outer peripheral face of the mouth neck part 31 by being extendedly provided on an inner side face of a lower end portion in a circumferential direction. A cut groove 42 is formed from an axial direction edge portion of the attachment cylindrical wall part 12 or an axial direction edge portion of the cylindrical part 11B so as to cross the linear engagement protrusion 11c extendedly provided in a circumferential direction, or an extension line thereof. An engagement of the linear engagement protrusion 11c with the engaged protrusion 31a is released by tearing and breaking the cut groove 42, and it is made possible to separate the fixed body cap 10 from the mouth neck part 31.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to an easily separable cap member that consists of a main body cap that is fixed to the neck portion of a container body and a lid cap that is removably attached to the main body cap, allowing the main body cap to be separated from the neck portion of the container body. [Background technology]

[0002] BACKGROUND ART Containers for storing liquid contents such as liquid detergent, fabric softener, bleach, and starch are known in which a main body cap having a dispensing nozzle for dispensing the liquid contents is attached to the neck portion of the container. In recent years, from the viewpoint of resource conservation through recycling, there has been a demand for removing a resin main cap from the neck of a container and disposing of the container and the main cap separately (separate disposal). This type of main cap may have a linear engaging protrusion formed of a linear convex rib on its inner circumferential surface that can engage with an engaging protrusion such as an annular convex rib formed on the neck of the container. Such a main cap is effective in preventing easy removal of the main cap from the neck of the container, but because it is designed to be difficult to remove, it has been difficult to remove it from the container.

[0003] Regarding the removal, various improvements have been made to the main body cap. For example, the main body cap described in Patent Documents 1 and 2 has a double structure including a cylindrical side wall attached to the neck of the container and an enclosing wall provided radially outward of the side wall, and by gripping and breaking a part of the enclosing wall, the side wall that is continuous with the enclosing wall can be removed from the neck. Furthermore, the main body cap described in Patent Document 3 has an outer tube that is attached to the neck of the container, the upper surface of the outer tube is open, and a groove portion is formed around the circumference that gives part of the outer tube a double structure of an inner portion and an outer portion, and a thin-walled portion for separation is formed on the inner portion of the groove. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2018-150059 [Patent Document 2] Japanese Patent Application Publication No. 2019-142554 [Patent Document 3] Patent Publication No. 2021-059341 Summary of the Invention [Problem to be solved by the invention]

[0005] The main body caps described in Patent Documents 1 and 2 have a double structure consisting of a side wall attached to the neck and an enclosing portion, while the main body cap described in Patent Document 3 has a double structure consisting of an inner portion and an outer portion separated by a groove partially formed in the outer tube. These main body caps are removed from the neck of a container by inserting a finger between the side wall and the enclosing portion or between the inner portion and the outer portion of the double structure and grasping the enclosing portion or the outer portion, thereby breaking the side wall continuous with the enclosing portion or the inner portion continuous with the outer portion. However, such double-structure cap members have a small gap when inserting a finger, making them difficult to grip, and therefore are difficult to remove the main body cap from the container.

[0006] Furthermore, the main body caps of Patent Documents 1 to 3 have a double structure, which makes the shape of the mold used during molding complex. Moreover, depending on the flow of resin during injection molding, it becomes difficult to uniformly fill the synthetic resin between the molds, which may impair the moldability of the thin-walled, easily breakable portion.

[0007] The present invention is directed to providing an easily separable cap member that can eliminate the drawbacks of the prior art described above. [Means for solving the problem]

[0008] The present invention relates to an easily separable cap member comprising a main body cap fixed to the neck portion of a container body and a lid cap removably attached to the main body cap, allowing the main body cap to be separated from the neck portion of the container body. It is preferable that the main body cap is composed of a fixed skirt portion fixed to the outer periphery of the neck portion of the container body, and an attachment tube wall portion to which the lid cap is attached, which protrudes upward from the shoulder plate portion of the fixed skirt portion. It is preferable that the tubular portion of the fixing skirt portion has a linear engaging protrusion formed on the inner surface of the lower end portion in a circumferential direction, which engages with the engaging protrusion provided on the outer surface of the neck portion of the container body. It is preferable that a notched groove is formed from the axial end edge of the mounting tube wall portion or the axial end edge of the tubular portion of the fixing skirt portion so as to intersect with the linear engaging protrusion extending circumferentially or its extension line. It is preferable that the tearing gripping portion is gripped to tear and break the cut groove, thereby releasing the engagement of the linear engaging protrusion with the engaged protrusion, thereby making it possible to separate the fixed main body cap from the neck portion of the container body. [Effects of the Invention]

[0009] The easily separable cap member of the present invention is excellent in operability when removed from the container body and in formability. [Brief explanation of the drawings]

[0010] [Figure 1] FIG. 1 is a cross-sectional view schematically showing one embodiment of the easily separable cap member of the present invention. [Figure 2] FIG. 2 is a perspective view schematically showing the main body cap of FIG. [Figure 3] FIG. 3 is a cross-sectional view taken along line AA in FIG. [Figure 4] 4 is a bottom view of the main body cap of FIG. 2. FIG. [Figure 5] FIG. 5 is a perspective view schematically showing another embodiment of the main body cap according to the present invention. [Figure 6] FIG. 6 is a perspective view schematically showing still another embodiment of the main body cap according to the present invention. [Figure 7] FIG. 7 is a perspective view schematically showing still another embodiment of the main body cap according to the present invention. [Figure 8] 8 is an enlarged cross-sectional view showing a state in which the lid cap is attached to the main body cap shown in FIG. [Figure 9] FIG. 9 is a perspective view schematically showing still another embodiment of the main body cap according to the present invention. [Figure 10] FIG. 10 is a cross-sectional view schematically showing still another embodiment of the main body cap according to the present invention. [Figure 11] 11 is a bottom view of the main body cap shown in FIG. DETAILED DESCRIPTION OF THE INVENTION

[0011] The easily separable cap member of the present invention will be described below based on a preferred embodiment with reference to the drawings. The easily separable cap member 1 (hereinafter simply referred to as "cap member 1") of the embodiment shown in FIG. 1 is attached to a container containing a liquid content and allows the liquid content to be poured out of the container. More specifically, it is attached to a neck portion 31 of a container body 30 containing the liquid content. The neck portion 31 is a cylindrical portion having an internal pouring passage and is provided at the upper end of the container body 30. The pouring passage communicates with the interior of the container body 30. The neck portion 31 has an engaging projection 31a formed on its outer circumferential surface. The engaging projection 31a is an annular protruding rib provided so as to protrude annularly in the circumferential direction of the neck portion 31, and can engage with a linear engaging projection 11c described below.

[0012] The cap member 1 is configured to include a main body cap 10 fixed to the neck portion 31, and a lid cap 20 removably attached to the main body cap 10. The lid cap 20 of this embodiment is a measuring cap for measuring the content liquid. By using the cap member 1 equipped with a measuring cap, the content liquid, such as a liquid detergent, contained in the container body 30 can be poured into the lid cap 20 through a dispensing nozzle described below and measured. After being measured, the content liquid is usually discharged to another location, such as a washing machine.

[0013] In this specification, "upward" refers to a direction that faces upward in the vertical direction when the neck portion 31 of the container body 30 faces upward in the vertical direction, and "downward" refers to a direction that faces downward in the vertical direction in this state. In this state, the axial direction Z of the main body cap 10 coincides with the height direction and vertical direction of the container body 30. In this specification, in the axial direction Z of the main cap 10, the tip side of the dispensing nozzle 15 described below is referred to as the upper side, and the opposite side (the side opposite to the dispensing nozzle 15) is referred to as the lower side. In addition, the circumferential direction of the main body cap 10 is also simply referred to as the "circumferential direction," and the axial direction of the main body cap 10 is also simply referred to as the "axial direction."

[0014] The main body cap 10 is configured to include a fixed skirt portion 11 and a pouring nozzle 15 that serves as a flow path for the content liquid. The fixed skirt portion 11 is a portion that is fixed to the outer periphery of the neck portion 31 of the container body 30 and is a portion that protrudes radially outward at the lower end of the main body cap 10. The fixed skirt portion 11 is configured to include an annular shoulder plate portion 11A and a tubular portion 11B that is formed hanging down from the outer periphery of the shoulder plate portion 11A.

[0015] The cylindrical portion 11B has a cylindrical upper cylindrical portion 11f that hangs down directly from the outer peripheral edge of the shoulder portion 11A, and a cylindrical stepped portion 11e that protrudes radially outward from the upper cylindrical portion 11f. The stepped portion 11e forms the lower end of the cylindrical portion 11B. The cylindrical portion 11B has a linear engaging protrusion 11c extending circumferentially on the inner surface of the stepped portion 11e. The linear engaging protrusion 11c is a linear convex rib that can engage with the engaging protrusion 31a, which is an annular convex rib formed on the neck portion 31. In other words, the main cap 10 can be attached (fixed) to the neck portion 31 of the container body 30. The main cap 10 of this embodiment is fitted to the neck portion 31 of the container body 30 by forcing the neck portion 31 between the fixing skirt portion 11 and the inner cylindrical wall 13 (described later) (stoppering type). In other words, the linear engaging protrusion 11c is engaged with the annular convex rib (the engaging protrusion 31a) from the base end side of the neck portion 31 by forcing the main cap 10 into place. This effectively prevents the main cap 10 from detaching from the container body 30. This effect is hereinafter also referred to as the "detachment prevention effect."

[0016] The main body cap 10 has a mounting tube wall 12 that protrudes upward from the shoulder plate 11A. The mounting tube wall 12 is concentric with the fixing skirt 11, and an engaged portion 12a made of a male thread is formed on the outer circumferential surface of the mounting tube wall 12. The lid cap 20 has an engaging portion (not shown) made of a female thread on its inner circumferential surface, and the lid cap 20 is removably attached to the main body cap 10 by screwing the engaged portion 12a into the lid cap 20.

[0017] The main body cap 10 of this embodiment has an inner cylinder wall 13 that is connected downward from the mounting cylinder wall portion 12. The inner cylinder wall 13 is a cylindrical portion formed radially inward of the fixing skirt portion 11, and the interior of the mounting cylinder wall portion 12 and the interior of the inner cylinder wall 13 are in communication. When the main body cap 10 is attached to the neck portion 31, the outer peripheral surface of the inner cylinder wall 13 is positioned along the inner peripheral surface of the neck portion 31, and the outer peripheral surface of the inner cylinder wall 13 and the inner peripheral surface of the neck portion 31 are in liquid-tight contact with each other. The inner cylinder wall 13 also has a bottom wall 14 that is inclined obliquely with respect to the horizontal direction. The bottom wall 14 has a flow opening 14b formed in approximately the center in a plan view, and a liquid return opening 14a formed at a lower position on the inclined bottom wall 14.

[0018] The dispensing nozzle 15 is a component that serves as an outflow path for the content liquid. The main body cap 10 of this embodiment has a dispensing nozzle 15 for dispensing the content liquid inside the inner cylinder wall 13. The dispensing nozzle 15 has a cylindrical shape and has a notch 15A formed along the height direction Z of the dispensing nozzle 15 at a portion of its circumference. A communication opening 14b is arranged at the lower end of the dispensing nozzle 15, and the space within the dispensing nozzle 15 communicates with the interior of the container body 30 via the communication opening 14b. The dispensing nozzle 15 extends beyond the inner cylinder wall 13 and protrudes upward from the mounting cylinder wall portion 12, and is erected on the bottom wall 14 of the inner cylinder wall 13. The dispensing nozzle 15 is formed to surround the periphery of the communication opening 14b. The dispensing nozzle 15 of this embodiment is used to dispense the liquid content into a lid cap 20, which is a measuring cap. For ease of explanation, the dispensing nozzle 15 is not shown in FIG.

[0019] The notch 15A is inclined with respect to the height direction (axial direction Z) of the dispensing nozzle 15. When the content liquid is dispensed, the main body cap 10 of this embodiment promotes air replacement within the container body 30 via the notch 15A, making it easy to dispense the content liquid. The notch 15A can be U-shaped, V-shaped, or the like. In this embodiment, the main body cap 10 is fixed to the neck portion 31 of the container body 30, and the tip of the dispensing nozzle 15 is tilted so that it faces downward, thereby dispensing the content liquid outside the container body 30.

[0020] A recess is formed between the inner cylinder wall 13 and the dispensing nozzle 15, and the bottom of the recess is formed by the bottom wall 14. When the lid cap 20 is fixed to the main body cap 10, a cylindrical portion (not shown) of the lid cap 20 is inserted into the recess. The cylindrical portion of the lid cap 20 has a scale or the like marked on its outer or inner surface so that the appropriate amount of contents can be measured. In addition, a liquid return opening 14a is formed at a low position on the bottom wall 14, and the liquid content that has flowed into the recess through this opening 14a can be efficiently recovered into the container body 30. For example, excess liquid content that has not been discharged after pouring and liquid content that has been poured in during refilling can be recovered inside the container body 30.

[0021] As shown in FIGS. 2 and 3, the main body cap 10 of this embodiment has a cut groove 42 formed in the tubular portion 11B of the fixing skirt portion 11. As shown in FIG. 3, the cut groove 42 is formed from the axial direction Z end edge of the tubular portion 11B so as to intersect with the linear engaging protrusion 11c, more specifically, so as to traverse the linear engaging protrusion 11c. In this embodiment, the axial direction Z end edge of the tubular portion 11B is the lower end edge of the tubular portion 11B. In other words, the cut groove 42 is formed so as to traverse the linear engaging protrusion 11c that extends circumferentially from the lower end of the stepped portion 11e to the stepped portion 11e. Alternatively, the cut grooves 42 may be formed so as to intersect with an extension line of the linear engagement protrusions 11 c from an end edge in the axial direction Z of the cylindrical portion 11 B. For example, the cut grooves 42 may be formed so as to intersect with an extension line of the linear engagement protrusions 11 c from an end edge in the axial direction Z of the cylindrical portion 11 B. In this specification, "the cut groove 42 is formed so as to intersect with the linear engagement protrusion 11c or its extension line" includes a form in which the cut groove 42 or the extension line of the cut groove 42 is formed so as to intersect with the linear engagement protrusion 11c or its extension line. The cut groove 42 has a cross-sectional shape of a recess such as a U-shape, a C-shape, or a V-shape.

[0022] The portion of the main body cap 10 that forms the outer surface has a single structure, and the portion that forms the outer surface has a tear-off grip portion F. The main body cap 10 of this embodiment has the tear-off grip portion F on the tubular portion 11B. The tear-off grip portion F is the portion that is pinched (held) by the fingers of the user performing the removal operation when removing the main body cap 10 from the neck portion 31, and is a portion provided on the outer peripheral surface of the main body cap 10 or a part of the outer surface. A portion of the edge of the tear-off grip portion F is formed by a cut groove that intersects with the linear attachment protrusion 11c or its extension. In this embodiment, a portion of the edge of the tear-off grip portion F is formed by a cut groove that intersects with the linear attachment protrusion 11c or its extension. The main body cap 10 of this embodiment has an extending strip-like portion 40 that extends axially outward from the axial end edge portion of the cylindrical portion 11B in the axial direction Z, and a tear grip portion F is continuous with the extending strip-like portion 40 in the circumferential direction. More specifically, the tear grip portion F of this embodiment is a grip belt 41 that is provided so as to extend circumferentially and detachably along the axial end edge portion of the cylindrical portion 11B (step portion 11e). The grip belt 41 is provided on the lower end edge portion of the cylindrical portion 11B (step portion 11e), and one end portion 41a of the belt 41 extends in the circumferential direction, and the other end portion of the belt 41 is continuous with the extending strip-like portion 40. The extending strip portion 40 bulges outward in the radial direction of the main body cap 10 from the outer peripheral surface of the cylindrical portion 11B, and the lower end of the strip portion 40 extends downward below the lower end of the cylindrical portion 11B (step portion 11e) (see FIG. 2). The grip belt 41 extends in the circumferential direction from the lower end of the extending strip portion 40. A cut groove 42 is formed in the cylindrical portion 11B along a portion of the edge of the extending strip portion 40 along the axial direction Z.

[0023] In the main body cap 10, a separation line 46 consisting of a slit or a thin-walled portion is formed between the grip belt 41 and the cylindrical portion 11B (step portion 11e). The separation line 46 is formed in a portion where the grip belt 41 and the cylindrical portion 11B are connected in parallel along the circumferential direction, and one end of the separation line 46 is connected to the cut groove 42. In this embodiment, the separation line 46 extending in the circumferential direction and the cut groove 42 extending in the axial direction Z are connected in an L-shape. The "connection" means that one end of the separation line 46 and one end of the cut groove 42 are positioned overlapping each other. By breaking the grip belt 41 along the separation line 46, the grip belt 41 can be partially separated from the cylindrical portion 11B. The cut grip belt 41 continues to the extending strip portion 40 at the other end 41b opposite to the one end 41a extending in the circumferential direction, so that the one end 41a becomes a free end (see FIG. 4). In this state, the free end of the grip belt 41 can be easily gripped, which further improves the operability when removing the main body cap 10 from the neck portion 31. For ease of explanation, the communication opening 14b and the liquid return opening 14a are not shown in FIG.

[0024] When removing the main body cap 10 of this embodiment from the neck portion 31, the grip belt 41, which is the tear grip portion F, is gripped and the cut groove 42 is torn, thereby breaking the tubular portion 11B. Because the grip belt 41 extends circumferentially from the extending band-like portion 40, the tubular portion 11B can be easily broken by gripping the belt 41 and applying force in the direction opposite to the extension direction (counterclockwise X1 in this embodiment). At this time, the tubular portion 11B is broken along the cut groove 42 formed in part of the axial end edge of the extending band-like portion 40. More specifically, the separation line 46 is broken while one end portion 41a of the grip belt 41 is gripped, and the belt 41 is partially separated from the tubular portion 11B (step portion 11e). Because the separation line 46 is formed to be thin, the separation line 46 can be broken with little force. Then, the gripping belt 41, partially separated from the tubular portion 11B, is moved toward the other end 41b of the belt 41, i.e., toward the extending strip-like portion 40. This applies a force to the tubular portion 11B via the extending strip-like portion 40 so that the tubular portion 11B is spread radially outward from the main cap 10, causing the cut groove 42 to break from its lower end. By gripping the gripping belt 41 and applying a force in this manner, the tubular portion 11B (step portion 11e) is continuously torn and broken. Because the cut groove 42 intersects with the linear engaging protrusion 11c or its extension, tearing the cut groove 42 releases the engagement between the linear engaging protrusion 11c and the engaging protrusion 31a of the neck portion 31. In particular, in this embodiment, the cut groove 42 crosses the linear engaging protrusion 11c, thereby more reliably releasing the engagement between the linear engaging protrusion 11c and the engaging protrusion 31a. Then, the main cap 10 fixed to the neck portion 31 can be separated from the neck portion 31.

[0025] As described above, the cap member 1 of this embodiment allows the user to tear the tubular portion 11B, including the linear engagement projections 11c, by gripping the tear grip portion F (grip belt 41) continuous with the tubular portion 11B. The tear grip portion F is provided on the outer surface of the main body cap 10, making it easy for the user to grasp with their fingers. Furthermore, the cut grooves 42 intersecting the linear engagement projections 11c or their extensions are formed on the axial direction Z edge of the tubular portion 11B, allowing the user to easily tear the tubular portion 11B from the edge while gripping the tear grip portion F. That is, the main body cap 10 of this embodiment exhibits a detachment prevention effect, yet allows the tubular portion 11B to be easily torn along the cut grooves 42. This allows the cap member 1 of this embodiment to be easily removed from the container body 30.

[0026] Furthermore, in the cap member 1 of this embodiment, both the lid cap 20 and the main cap 10 can be manufactured by molding, as will be described later. The main body cap 10 of this embodiment has a single-layer structure for the portions forming the outer surface (the mounting tube wall portion 12 and the fixing skirt portion 11), rather than the complex structure (double-layer structure) of the prior art document mentioned above (see FIG. 3). This eliminates constraints on mold design, and allows synthetic resin to be uniformly filled between the molds during injection molding. Therefore, the cap member 1 of this embodiment has excellent moldability and can be easily manufactured.

[0027] In the gripping belt 41 of this embodiment, the other end 41b opposite to the free end (one end 41a) is continuous with the tubular portion 11B via the extending strip portion 40 (see FIG. 2). In this embodiment, the main body cap 10 grasps the gripping belt 41 that has been partially detached from the step portion 11e and applies force in the circumferential direction, so that the extending strip portion 40 provided on the outer surface of the tubular portion 11B becomes the starting point for breaking of the tubular portion 11B. As described above, the extending strip-shaped portion 40 bulges outward in the radial direction of the main body cap 10 on the outer peripheral surface of the cylindrical portion 11B. That is, the extending strip-shaped portion 40 has the gripping belt 41 attached to the outer surface of the cylindrical portion 11B at a portion in the circumferential direction. Therefore, the extending strip-shaped portion 40 is thicker than the other portions of the cylindrical portion 11B.

[0028] The gripping belt 41 can be formed in any angle range in the circumferential direction of the main body cap 10. From the viewpoint of ease of breaking the tubular portion 11B, the angle range θ1 (see FIG. 4) in which the gripping belt 41 and the extending strip portion 40 are formed in the circumferential direction is preferably 40° or more and 320° or less, more preferably 40° or more and 100° or less. In this specification, the term "angular range" refers to the angular range in the circumferential direction of the main body cap 10 around the central axis of the main body cap 10.

[0029] In this embodiment, the tubular portion 11B is formed with a thin, easy-to-break line 44 extending in the circumferential direction. Also, a notched groove 42 is formed so as to connect to one end of the thin, easy-to-break line 44. The thin, easy-to-break line 44 is formed in an area closer to (above) the shoulder plate portion 11A than the linear engaging protrusion 11c, and by breaking the tubular portion 11B along the breaking line 44, the engagement between the linear engaging protrusion 11c and the engaged protrusion 31a can be easily released. In this embodiment, by moving the gripped gripping belt 41 counterclockwise in the direction X1, the belt 41 is separated from the tubular portion 11B, and the tubular portion 11B is torn and broken from the extending band-like portion 40 via the cut groove 42 and along the thin-walled, easy-to-break line 44. This forms an L-shaped notch in the tubular portion 11B along the cut groove 42 and the thin-walled, easy-to-break line 44, disengaging the linear engaging protrusion 11c from the engaged protrusion 31a. As a result, the main body cap 10 can be more easily removed from the container body 30.

[0030] In this embodiment, the thin-walled, easy-to-break line 44 is formed on the inner surface of the tubular portion 11B. More specifically, it is formed on the inner surface of the tubular portion 11B, along the circumferential direction, near the boundary between the upper tubular portion 11f and the stepped portion 11e. The thin-walled, easy-to-break line 44 is formed by extending in the circumferential direction from a position where it intersects with the upper end of the cut groove 42 (see FIG. 4). The thin-walled, easy-to-break line 44 is a linear groove along the circumferential direction, and its cross-sectional shape is a concave shape such as a U-shape, a C-shape, or a V-shape.

[0031] The thin-walled, easy-to-break line 44 may be formed in any angle range in the circumferential direction of the main cap 10. For example, the thin-walled, easy-to-break line 44 may be formed continuously around the entire circumference of the main cap 10. From the viewpoint of the ease of breaking of the cylindrical portion 11B, the angle range θ3 (see FIG. 4) in which the thin-walled easy-to-break line 44 is formed in the circumferential direction is preferably 90° or more and 180° or less.

[0032] In the main body cap 10 having the extending strip-like portion 40, the cut grooves 42, as well as the thin-walled easy-to-break lines 44, are preferably formed by cutting into the inner surface of the fixed skirt portion 11. In this way, when the tear-and-hold portion F (holding belt 41) is pulled at the point of force, the stress is concentrated at the bottom of the cut grooves 42, making it easier to break the tubular portion 11B. In this embodiment, tearing and breaking of the thin, easy-to-break line 44 can be performed continuously in addition to the separation line 46 and the cut groove 42, so that such breaking work can be performed extremely smoothly.

[0033] To facilitate breaking of the tubular portion 11B at the extending strip-like portion 40, the angle range θ2 (see FIG. 4) in which the extending strip-like portion 40 is formed is preferably 25° to 80°, and more preferably 25° to 40°, in the circumferential direction of the main body cap 10. By setting the angle within this range, breakage of the gripping belt 41 when the belt 41 is pulled can be further suppressed.

[0034] The extending strip-like portion 40 is preferably disposed at a position that overlaps the notch 15A in the circumferential direction of the main body cap 10 (see FIG. 2). With this configuration, after the engagement between the main body cap 10 and the container body 30 is released, the extending strip-like portion 40 is not positioned in the same direction (front direction) as the notch 15A of the dispensing nozzle 15. As a result, when the main body cap 10 is removed from the container body 30 with the notch 15A of the main body cap 10 facing downward, the bottom wall 14 of the inner cylinder wall 13, particularly the portion near the liquid return opening 14a located at the lowest position, interferes with the neck portion 31 of the container body 30, making it difficult to remove the main body cap 10. When the extending strip portion 40 is arranged so as to overlap the cutout portion 15A in the circumferential direction, the extending strip portion 40 may overlap the cutout portion 15A partially or entirely.

[0035] Another embodiment of the cap member according to the present invention will be described below. The following description of this embodiment will focus mainly on components that differ from the embodiment shown in Figures 1 to 4, and similar components will be given the same reference numerals and will not be described further. For components that are not specifically described, the description of the embodiment shown in Figures 1 to 4 will be applied as appropriate.

[0036] In the above-described embodiment, the main body cap 10 is formed with a cut groove 42 and a thin-walled, easy-to-break line connected thereto. However, these grooves and break lines may be formed in multiple numbers. The tubular portion 11B of the main body cap 110 shown in FIG. 5 is formed with a cut groove 42 connected to the separation line 46 and a thin-walled, easy-to-break line 44 connected to the cut groove 42, similar to the embodiment shown in FIGS. 1 to 4. Furthermore, a second cut groove 43 is formed in the end edge of the extended strip-shaped portion 40 opposite the end edge where the cut groove 42 is formed, crossing the linear engagement protrusion 11c or its extension. The tubular portion 11B shown in FIG. 5 is also formed with a second thin-walled, easy-to-break line 45 extending circumferentially toward the linear engagement protrusion 11c from the thin-walled, easy-to-break line 44. One end (upper end) of the second cut groove 42 is connected to the second thin-walled, easy-to-break line 45. The second cut groove 42 extending in the axial direction Z of the main body cap 110 and the second thin-walled, easy-to-break line 45 extending in the circumferential direction are connected in an L-shape.

[0037] The second cut groove 43 is formed from the edge of the step portion 11e in the axial direction Z to cross the step portion 11e in the axial direction Z, and is formed at a position spaced apart from the cut groove 42 in the circumferential direction. More specifically, when the end of the extending band-shaped portion 40 on the grip belt 41 side in the circumferential direction is defined as "one end a" and the end opposite to the one end is defined as "the other end b" (see FIG. 5), the cut groove 42 is formed at the edge of the one end a of the extending band-shaped portion 40, and the second cut groove 43 is formed at the edge of the other end b of the extending band-shaped portion 40. In other words, the extending band-shaped portion 40 is located between the cut groove 42 and the second cut groove 43. The cut groove 42 and the second cut groove 43 are formed approximately parallel to each other.

[0038] The second thin-walled easy-to-break line 45 is formed along the circumferential direction from the upper end of the second cut groove 43. The second thin-walled easy-to-break line 45 is spaced apart from the thin-walled easy-to-break line 44 toward the lower end in the axial direction Z. The thin-walled easy-to-break line 44 and the second thin-walled easy-to-break line 45 are formed approximately parallel to each other. In this embodiment, one end of the extending side of the thin-walled easy-to-break line 44 and the second thin-walled easy-to-break line 45 extends to approximately the same position in the circumferential direction. In the main body cap 110 of this embodiment, the gripping belt 41 is gripped and the tubular portion 11B of the extending band-like portion 40 is broken, thereby part of the circumferential step portion 11e is broken along the axial direction Z. This releases the engagement between the linear engaging protrusion 11c formed on the step portion 11e and the engaged engaging protrusion 31a of the neck portion 31, making it possible to more easily remove the main body cap 110 from the container body 30. Furthermore, after the step portion 11e is broken, the upper tubular portion 11f is broken in the circumferential direction along the thin-walled easy-break line 44 and the second thin-walled easy-break line 45. In the main body cap 110 of this embodiment, the thin-walled easy-break line 44 and the second thin-walled easy-break line 45 are formed in the upper tubular portion 11f, and no linear engaging protrusion 11c is present between the thin-walled easy-break line 44 and the second thin-walled easy-break line 45. With this configuration, the upper tubular portion 11f, which is thinner than the portion of the step portion 11e where the linear engaging protrusion 11c is formed, is broken, so that the broken portion of the upper tubular portion 11f can be more easily bent radially outward of the main body cap 110. As a result, breaking of the tubular portion 11B in the circumferential direction is easier, thereby further improving operability during breaking. Furthermore, in the main body cap 110 of this embodiment, there is no linear engaging protrusion 11c between the thin-walled easy-to-break line 44 and the second thin-walled easy-to-break line 45, so the main body cap 110 can be prevented from unintentionally breaking along these thin-walled easy-to-break lines 44, 45 due to an impact such as being dropped.

[0039] The second cut groove 43 can appropriately adopt the configuration of the cut groove 42, and the second thin-walled, easy-to-break line 45 can appropriately adopt the configuration of the thin-walled, easy-to-break line 44. From the viewpoint of more easily breaking the tubular portion 11B, in the main body cap 110 having the extending strip-shaped portion 40, it is preferable that the cut groove 42 and the thin-walled, easy-to-break line 44 connected thereto, and the second cut groove 43 and the second thin-walled, easy-to-break line 45 connected thereto are formed by cutting into the inner surface of the tubular portion 11B.

[0040] Although each of the main body caps shown in FIGS. 1 to 5 includes a gripping belt 41 extending circumferentially from the extending strip-like portion 40, the main body cap may not include the gripping belt 41. The main body cap 111 shown in FIG. 6 has the same configuration as the embodiment shown in FIGS. 1 to 4 except that it does not include the gripping belt 41, and the extending strip-like portion 40 serves as a tear-off gripping portion F. That is, in this embodiment, the extending strip-like portion 40 is gripped, and the tubular portion 11B (step portion 11e) is torn in the axial direction Z along the cut groove 42, and then the tubular portion 11B (step portion 11e) is torn in the circumferential direction along the thin-walled easy-to-break line 44. This releases the engagement between the linear engaging protrusion 11c formed on the step portion 11e and the engaged protrusion 31a of the neck portion 31.

[0041] The main body cap shown in Figures 1 to 6 is configured so that the tubular portion 11B (step portion 11e) can be torn off from the axial Z edge (lower end) of the tubular portion 11B by the cut groove 42, but the main body cap may also be configured so that it can be torn off from the axial Z edge (upper end) of the mounting tubular wall portion 12.

[0042] The main body cap 210 shown in FIG. 7 has a first cut groove 47 and a second cut groove 48 formed therein, which extend in the axial direction Z from the end edge (upper end) of the mounting tube wall portion 12 in the axial direction Z. In this embodiment, the second cut grooves 48 are formed so as to intersect with the linear engagement protrusions 11c extending in the circumferential direction. More specifically, the second cut grooves 48 are formed so as to traverse the linear engagement protrusions 11c and extend to the axial direction Z edge portion (lower end) of the tubular portion 11B. The second cut grooves 48 may be formed so as to traverse the linear engagement protrusions 11c, or so as to traverse an extension line of the linear engagement protrusions 11c. In this embodiment, the second cut groove 48 includes a second upper cut groove 48a, a second shoulder cut groove 48b, and a second lower cut groove 48c. The second upper cut groove 48a is formed in the axial direction Z from the upper end to the lower end of the mounting tube wall portion 12. The second shoulder cut groove 48b is formed in the shoulder portion 11A and connects the lower end of the second upper cut groove 48a to the upper end of the second lower cut groove 48c. The second lower cut groove 48c is formed in the axial direction Z from the upper end of the upper tube portion 11f to the lower end of the stepped portion 11e. In other words, the second lower cut groove 48c is formed in the axial direction Z from the upper end to the lower end of the tube-shaped portion 11B. By breaking the mounting tube wall portion 12 and the fixing skirt portion 11 (shoulder plate portion 11A, tubular portion 11B) from the upper end of the mounting tube wall portion 12 along the second cut groove 48, the linear engaging protrusion can be released from the engagement with the engaged protrusion, thereby allowing the main body cap 210 to be separated from the neck portion 31.

[0043] When the main body cap 210 of this embodiment is to be torn, the second cut grooves 48 are provided on the outer surface of the main body cap 210. Therefore, the main body cap 210 is torn while gripping a portion of the outer surface (the inter-groove strip portion 240, described later) as a tear-off grip F. Because the tear-off grip F is located on the outer surface of the main body cap 210, it can be easily grasped with the user's fingers. Even in this embodiment, despite exhibiting a detachment prevention effect, the main body cap 210 can be easily torn along the cut grooves 48, resulting in excellent operability when removing the cap 210 from the container body 30. Furthermore, the main body cap 210 of this embodiment also has a single-layer structure for the portions forming the outer surface (the mounting tube wall portion 12 and the fixed skirt portion 11), rather than the complex structure (double layer structure) of the prior art document mentioned above (see FIG. 7). Therefore, it has excellent moldability and can be easily manufactured.

[0044] In the main body cap 210 of this embodiment, the first cut groove 47 is formed to connect to one end of the thin-walled, easy-to-break line 44 extending in the circumferential direction. The first cut groove 47 includes a first upper cut groove 47a formed in the mounting tube wall portion 12, a first shoulder cut groove 47b formed in the shoulder portion 11A of the tubular portion 11B, and a first lower cut groove 47c formed in the upper tubular portion 11f. The first upper cut groove 47a is formed in the axial direction Z from the upper end to the lower end of the mounting tube wall portion 12. The first shoulder cut groove 47b is formed in the shoulder portion 11A and connects the lower end of the first upper cut groove 47a to the upper end of the first lower cut groove 47c. The first lower cut groove 47c is formed in the axial direction Z from the upper end to the lower end of the upper tubular portion 11f, and its lower end connects to the thin-walled, easy-to-break line 44. That is, the first cut groove 47 and the thin, easily breakable line 44 are connected in an L-shape. The thin, easily breakable line 44 of this embodiment is also formed along the circumferential direction near the boundary between the upper cylindrical portion 11f and the stepped portion 11e, closer to (above) the shoulder plate portion 11A than the linear engagement protrusion 11c.

[0045] 1 to 4 can be applied as appropriate to the first cut groove 47 and the second cut groove 48 of this embodiment, as long as the effects of the present invention are achieved. The second thin-walled, easy-to-break line 45 can be applied as appropriate to the thin-walled, easy-to-break line 44.

[0046] The strip-shaped portion 240 sandwiched between the first cut groove 47 and the second cut groove 48 in the circumferential direction of the main body cap 210 will hereinafter also be simply referred to as the "inter-groove strip-shaped portion 240." In this embodiment, the inter-groove strip portion 240 between the first cut groove 47 and the second cut groove 48 serves as a tear-off grip portion F. By gripping the tear-off grip portion F (inter-groove strip portion 240) and tearing the mounting tube wall portion 12 and the fixing skirt portion 11 along the first cut groove 47 and the second cut groove 48, and tearing the tubular portion 11B in the circumferential direction along the thin-walled, easy-to-break line 44, the main body cap 210 can be more easily removed from the neck portion 31. That is, by gripping the inter-groove strip portion 240 and pulling it downward, the mounting tube wall portion 12 and the fixing skirt portion 11 are broken along the first cut groove 47 and the second cut groove 48, and then the inter-groove strip portion 240 is moved in the circumferential direction to break the tubular portion 11B along the thin-walled, easy-to-break line 44, thereby releasing the engagement between the main body cap 210 and the neck portion 31.

[0047] In this embodiment, when the inter-groove band portion 240 partially formed on the attachment tube wall portion 12 serves as the tear-and-hold portion F, the main body cap 210 is torn by tearing the attachment tube wall portion 12 outward. To facilitate tearing of the main body cap 210, the first notched groove 47 and the second notched groove 48 are preferably formed by cutting the outer circumferential surface of the attachment tube wall portion 12. This configuration further improves the liquid sealing between the main body cap 210 and the lid cap 20. More specifically, when the lid cap 20 is attached to the main body cap 210, the engaged portion 12a formed on the outer circumferential surface of the attachment tube wall portion 12 and the engaging portion formed on the inner circumferential surface of the lid cap 20 are threadedly engaged, and the tubular portion 25 of the lid cap 20 is inserted into the inner tubular wall 13 (see FIG. 8 ). In the main body cap 210 of this embodiment, the first cut groove 47 and the second cut groove 48 are formed in the outer peripheral surface of the mounting tube wall portion 12, which allows for better adhesion between the mounting tube wall portion 12 and the lid cap 20. In particular, this further improves the liquid sealing performance at the upper end portion C1 of the mounting tube wall portion 12 and the inner peripheral surface C2 of the mounting tube wall portion 12 (see FIG. 8).

[0048] From the viewpoint of breaking the main body cap 210 more easily, the thin-walled easy-to-break line 44 is preferably formed by cutting into the inner surface of the tubular portion 11B. That is, in the main body cap 210 having the inter-groove band portion 240, the first cut groove 47 and the second cut groove 48 are preferably formed by cutting into the outer peripheral surface of the mounting tubular wall portion 12, while the thin-walled easy-to-break line 44 is preferably formed by cutting into the inner surface of the fixing skirt portion 11.

[0049] To facilitate breaking of the main body cap 210 at the inter-groove band portion 240, the angular range in which the inter-groove band portion 240 is formed is preferably 20° to 90°, and more preferably 25° to 40°, in the circumferential direction of the main body cap 210. By setting the angle within this range, the inter-groove band portion 240 can be more easily gripped with the fingers, further improving operability.

[0050] From the viewpoint of further improving the operability when removing the main body cap 210 from the neck portion 31, it is preferable that the inter-groove band portion 240 is arranged in a position that overlaps the cutout portion 15A in the circumferential direction of the main body cap 10 (see FIG. 7). At the position of the cutout portion 15A in the circumferential direction, there is no interference from the dispensing nozzle 15, and it is easy to insert a finger into the attachment tube wall portion 12. This makes it easy to hook a finger on the inter-groove band portion 240 and to grip the band portion 240 more easily. When the inter-groove band portion 240 is arranged so as to overlap the cutout portion 15A in the circumferential direction, the inter-groove band portion 240 may overlap the cutout portion 15A partially or entirely.

[0051] The main body cap having the inter-groove band portion 240 has the first cut groove 47 and the thin-walled, easy-to-break line 44 connected thereto formed therein, but multiple such break lines may be formed. The main body cap 310 shown in Fig. 9 has the first cut groove 47 and the thin-walled, easy-to-break line 44 connected thereto formed therein, as well as the second cut groove 48 and the second thin-walled, easy-to-break line 45 connected thereto formed therein. The lower end of the first cut groove 47 shown in FIG. 9 is located closer to the shoulder plate portion 11A (upward) than the first cut groove shown in FIG. 7, and a thin-walled, easy-to-break line 44 extending in the circumferential direction is connected to the lower end. The second cut groove 48 shown in FIG. 9 does not reach the axial Z edge of the step portion 11e, and the lower end of the second cut groove 48 is located at a position spaced from the upper end of the step portion 11e toward the shoulder plate portion 11A (upward). The second cut groove 48 of this embodiment extends in the axial Z direction so that its extension intersects with the linear engagement protrusion 11c formed on the step portion 11e. A second thin-walled, easy-to-break line 45 extending in the circumferential direction is connected to the lower end of the second cut groove 48. The first cut groove 47 and the second cut groove 48, which extend in the circumferential direction, are formed substantially parallel to each other. In this embodiment, one end of each of the thin, easy-to-break line 44 and the second thin, easy-to-break line 45 extends to approximately the same position in the circumferential direction. In the embodiment shown in FIG. 9, the thin-walled easy-break line 44 and the second thin-walled easy-break line 45 are formed on the upper tubular portion 11f. That is, the linear engaging protrusion 11c is not present between the thin-walled easy-break line 44 and the second thin-walled easy-break line 45, and the protrusion 11c is present in the step portion 11e. The absence of the linear engaging protrusion 11c between the thin-walled easy-break line 44 and the second thin-walled easy-break line 45 allows the breaking portion of the upper tubular portion 11f, which is thinner than the protrusion 11c, to be more easily bent radially outward from the main cap, making it easier to break along the circumferential direction of the tubular portion 11B. Furthermore, unintentional breakage of the main cap 310 along these thin-walled easy-break lines 44, 45 due to an impact such as being dropped can be prevented.

[0052] The cap member in each of the above-described embodiments is a molded product made of a synthetic resin such as polypropylene or polyethylene, or a bioplastic such as polylactic acid, and is preferably formed by injection molding. As described above, such a cap member has a single-layer structure as a whole, and is formed with a tear grip portion F extending from the outer surface of the main cap or a tear grip portion F constituting a part of the outer surface.

[0053] The present invention is not limited to the above-described embodiments and can be modified as appropriate. The above-described embodiments may also be combined. For example, the main body caps in the above-described embodiments are attached to the neck portion 31 by a stoppering method in which the neck portion 31 is forced between the fixing skirt portion 11 and the inner cylinder wall 13, but the attachment method to the neck portion 31 is not limited to this. For example, as in the main body cap 112 shown in Fig. 10, the main body cap may be attached to the neck portion 31 by threading a female thread ridge 11b formed on the inner peripheral surface of the upper cylinder portion 11f with a male thread ridge (not shown) provided on the outer peripheral surface of the neck portion 31. 10, the cap body 112 has a plurality of locking ribs 11d formed on the inner peripheral surface of the stepped portion 11e, inclined relative to the inner peripheral surface (see FIG. 11). When the cap body 10 is attached (fixed) to the neck portion 31, the locking ribs 11d engage with locking stepped portions (not shown) formed on the outer peripheral surface of the neck portion 31. This, in combination with the engagement of the linear locking protrusions 11c of the fixing skirt portion 11 and the locking protrusions 31a of the neck portion 31, further improves the prevention of detachment. For ease of explanation, the flow opening 14b and the liquid return opening 14a are not shown in FIG. 11. The main body cap 112 shown in Figures 10 and 11 has a form having a locking rib 11d on the step portion 11e, but the main body cap that is fixed to the neck portion 31 by screwing may not have a locking rib 11d on the step portion 11e.

[0054] In addition, in the main body caps of the embodiments shown in Figs. 1 to 6, the grip belt 41 extends from the extending strip portion 40 in the clockwise direction X2, but it may also extend in the counterclockwise direction X1. In addition, a main body cap that does not have a gripping belt 41 but has an extending strip-shaped portion 40 may have cut grooves 42, 43 formed on each of the two side edges along the axial direction Z of the extending strip-shaped portion 40, or may have a cut groove 42 formed on one of the side edges. Furthermore, in each of the above-described embodiments, the fastening skirt portion 11 is formed with the thin, easily breakable line 44 extending in the circumferential direction, but such a thin, easily breakable line 44 does not have to be formed. [Explanation of symbols]

[0055] 1. Easy-to-separate cap member 10,110,111,112,210,310 Body cap 11 Fixed skirt part 11A Shoulder plate 11B Cylindrical part 11b Female thread ridge 11c Linear engagement protrusion 11d Locking rib 11e Step 11f Upper cylinder part 12 Mounting tube wall 12a Engaged part 13 Inner cylinder wall 14 Bottom wall 14a Liquid return opening 15 Dispensing nozzle 15A Notch 20 Lid cap 30 Container body 31 Oral area 31a Engaged convex part 40 Extension strip 41 Gripping belt 42 Cutting groove 43 Second cutting groove 44 Thin wall easy break line 45 2nd thin easy break line 240 Groove belt 47 First cutting groove 48 Second cutting groove 46 Separation line F Tear grip part X1 Counterclockwise X2 Clockwise Z axis direction

Claims

1. An easily separable cap member comprising a main body cap fixed to a neck portion of a container body and a lid cap detachably attached to the main body cap, the main body cap being separable from the neck portion of the container body, The main body cap is configured to include a fixing skirt portion fixed to the outer periphery of the neck portion of the container main body, and an attachment tube wall portion provided to protrude upward from a shoulder plate portion of the fixing skirt portion and to which the lid cap is attached, The main body cap has a single-layered fastening skirt portion, The cylindrical portion of the fixing skirt portion is formed with a linear engaging projection extending circumferentially from the inner surface of the lower end portion thereof and engaging with an engaging projection provided on the outer peripheral surface of the neck portion of the container body, A notched groove is formed from an axial end edge of the cylindrical portion so as to intersect with the linear engagement protrusion extending in the circumferential direction or an extension line thereof, The tear gripping portion is gripped to tear and break the cut groove, thereby releasing the engagement of the linear engaging protrusion with the engaged protrusion, and the fixed main body cap can be separated from the neck portion of the container body, an extending band-shaped portion provided on an outer peripheral surface of the cylindrical portion and extending axially outward from an axial end edge of the cylindrical portion; The tubular portion has the notched groove formed along an edge of the extending strip portion, the tearing gripping portion is a gripping belt extending in a circumferential direction so as to be separable along an axial end edge portion of the cylindrical portion, The gripping belt is continuous with the extending band-shaped portion in the circumferential direction, An easily separable cap member in which one end of a separation line for separating the gripping belt is connected to the cut groove, and at least one end of the gripping belt extends in the circumferential direction.

2. A thin-walled, easily broken line is formed extending circumferentially in the cylindrical portion in an area closer to the shoulder plate portion than the linear engagement protrusion, 2. The easily separable cap member according to claim 1, wherein the cut groove is formed so as to connect to one end of the thin, easily breakable line.

3. A second notch is formed across the linear attachment protrusion or its extension from the edge portion opposite to the edge where the notch is formed in the extending band-shaped portion, An easy-to-separate cap member as described in claim 2, wherein the second cut groove is connected to a second thin-walled, easy-to-break line formed by extending circumferentially toward the linear engagement protrusion side from the thin-walled, easy-to-break line.

4. The easily separable cap member according to any one of claims 1 to 3, wherein the cut groove is formed by cutting into the inner surface of the fixing skirt portion.

5. An easily separable cap member described in any one of claims 1 to 4, wherein the angular range in which the extending band-shaped portion is formed in the tubular portion is 25° or more in the circumferential direction.

6. The main body cap further includes a dispensing nozzle that serves as a flow path for the content liquid, The pouring nozzle has a notch formed in a part of the circumferential direction along the height direction of the pouring nozzle, The easily separable cap member according to any one of claims 1 to 5, wherein the extending strip-shaped portion is positioned so as to overlap the notch portion in the circumferential direction of the main cap.

7. An easily separable cap member comprising a main body cap fixed to the neck portion of a container main body and a lid cap detachably attached to the main body cap, the main body cap being separable from the neck portion of the container main body, The main body cap is configured to include a fixing skirt portion fixed to the outer periphery of the neck portion of the container main body, and an attachment tube wall portion provided to protrude upward from a shoulder plate portion of the fixing skirt portion and to which the lid cap is attached, The body cap has a single-layered mounting tube wall portion, The cylindrical portion of the fixing skirt portion is formed with a linear engaging projection extending circumferentially from the inner surface of the lower end portion thereof and engaging with an engaging projection provided on the outer peripheral surface of the neck portion of the container body, a thin-walled, easily breakable line is formed in the tubular portion in a region closer to the shoulder plate portion than the linear engagement protrusion, and extends in a circumferential direction; the main body cap has a first notched groove formed from an axial end edge of the mounting tube wall portion so as to connect to one end of the thin-walled, easily breakable line, and a second notched groove formed from an axial end edge of the mounting tube wall portion so as to intersect with the linear engagement protrusion or an extension thereof, The tear grip portion is formed by an inter-groove band portion sandwiched between the first cut groove and the second cut groove, The easy-separable cap member is configured to be able to separate the attached main body cap from the neck portion of the container body by gripping the tearing gripping portion to tear the mounting tube wall portion and the fixed skirt portion along the first cut groove and the second cut groove, and by tearing the tubular portion circumferentially along the thin-walled easy-to-break line.

8. 8. The easily separable cap member according to claim 7, wherein the first and second cut grooves are formed by cutting the outer peripheral surface of the mounting tube wall portion.

9. 9. The easily separable cap member according to claim 7 or 8, wherein the angular range in which the inter-groove band portion is formed in the cylindrical portion is 25 degrees or more in the circumferential direction.

10. The main body cap further includes a dispensing nozzle that serves as a flow path for the content liquid, The pouring nozzle has a notch formed in a part of the circumferential direction along the height direction of the pouring nozzle, The easily separable cap member according to any one of claims 7 to 9, wherein the inter-groove band portion is positioned so as to overlap the notch portion in the circumferential direction of the main body cap.

11. An easy-to-separate cap member as described in claim 6 or 10, wherein the lid cap is a measuring cap for measuring the contents, and the main cap is provided with an injection nozzle for injecting the contents into the measuring cap.

12. The easily separable cap member according to any one of claims 2, 3, and 7 to 10, wherein the angle range in which the thin-walled, easily broken line is formed in the circumferential direction is 90° or more and 180° or less.

13. A container comprising the easily separable cap member according to any one of claims 1 to 12 and the container body, The engaging convex portion provided on the outer surface of the neck portion of the container body is a circular convex rib that protrudes in a circular shape in the circumferential direction, and the linear engaging convex portion provided on the inner surface of the tubular portion is a linear convex rib that engages with the circular convex rib from the base end side of the neck portion when the main body cap is driven in.

Images