Sorting cap

Abstract

To provide a sorting cap capable of being breakable with weak force during sorting, without breaking when a plug is fitted to a mouth of a container body, even when a thickness of an inner peripheral thin-wall part is made thinner than conventional one.SOLUTION: There is provided a sorting cap comprising a cap body B, and a lid body D continuously provided to the cap body B via a hinge part C. The cap body B is provided with an outer peripheral wall part 8 fitted to a mouth 1 of a container body A. The outer peripheral wall part 8 comprises: a V-shaped outer peripheral notch part 16 in top view that is vertically cut while leaving a thin-wall bottom wall 17 from an outer peripheral upper face 8a located near the hinge part C; a slit groove 24 concavely provided over a predetermined arc range, that passes through the hinge part C from an end face 16a of the outer peripheral notch part 16; an inner peripheral notch part 18 concavely provided upward from a lower end inner peripheral side corresponding to the outer peripheral notch part 16; and an inner peripheral thin-wall part 19 broken during sorting, that is formed between the outer peripheral notch part 16 and the inner peripheral notch part 18. The thin-wall bottom wall 17 is formed in a V-shape in side view.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a sorting cap that is fitted onto the mouth of a container body, and more particularly to a sorting cap that is easily broken during sorting. [Background technology]

[0002] Various structures have been proposed for separating caps in order to separate them from the mouth of the container body by breaking the fitting tubular part that fits into the mouth of the container body when discarding them. However, there has been a problem in that, taking into account the strength and sealing ability required to fit into the mouth of the container body, a considerable amount of force is required to break the fitting tubular part when separating the cap from the mouth of the container body.

[0003] For this reason, a hinge cap consisting of a cap body attached to the mouth of a container body and an upper lid connected to the cap body by a hinge portion so that it can be opened and closed has been known in the past (see, for example, Patent Document 1). The cap body has an outer tube and an inner tube suspended across a fitting portion with the mouth of the container body, and an engaging tube portion connected to the outer tube and inner tube and including an engaging portion with the upper lid at its upper portion. The outer tube connected to the hinge portion has a vertical tear line with a vertical notch near the hinge portion, and a slit groove is provided between the outer tube and the engaging ring, opening upward from the vertical tear line over an arc range of a predetermined circumferential angle. A circumferential tear line consisting of a thin-walled connecting portion connecting the outer tube and the engaging ring is provided on the bottom surface of the slit groove, connected to the vertical tear line (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2012-153429 Summary of the Invention [Problem to be solved by the invention]

[0005] In the hinge cap described in Patent Document 1, in order to prevent the thin-walled inner portion of the vertical tear line from breaking when the hinge cap is fitted onto the mouth of the container body, it has traditionally been necessary to make the thickness 0.45 mm to 0.55 mm. However, when the thickness of the thin-walled inner portion is made 0.45 mm to 0.55 mm, there is a problem in that force is required when starting to tear the portion during sorting, making it difficult to break.

[0006] The present invention aims to solve the above problems and to provide a sorting cap that will not break when inserted into the mouth of a container body, even if the thickness of the inner thin-walled portion is thinner than conventional caps, and can be broken with a weak force during sorting. [Means for solving the problem]

[0007] In order to solve the above-mentioned problems, the present invention provides a separation cap comprising a cap body attached to a container body and a lid body connected to the cap body via a hinge portion, wherein the cap body has an outer peripheral wall portion fitted onto the mouth of the container body, the outer peripheral wall portion consisting of an end face on the hinge portion side from the outer peripheral upper surface located near the hinge portion, an end face opposite the hinge portion, and a concave surface connecting the end face and the end face, a V-shaped outer peripheral cut portion cut vertically leaving the thin-walled bottom wall, a slit groove recessed over a predetermined arc range from the end face of the outer peripheral cut portion through the hinge portion, an inner peripheral cut portion recessed upward from the inner peripheral side of the lower end corresponding to the outer peripheral cut portion, and an inner peripheral thin-walled portion formed between the outer peripheral cut portion and the inner peripheral cut portion and broken during separation, and the thin-walled bottom wall is configured to be V-shaped in side view.

[0008] As a specific embodiment of the sorting cap, the thin-walled bottom wall is cut inward at an angle from the end face and terminal end face of the outer peripheral cut-out portion to form the lowest surface; the inner peripheral thin-walled portion is configured to include an upper thin-walled portion with a uniform thickness, a lower thin-walled portion with a uniform but thicker thickness than the upper thin-walled portion, and a connecting thin-walled portion that connects the lower end of the upper thin-walled portion to the upper end of the lower thin-walled portion and whose thickness increases from the upper end to the lower end; the connecting thin-walled portion is configured to include an inclined surface whose thickness increases from the upper end to the lower end; and the connecting thin-walled portion is configured to include a stepped surface whose thickness increases from the upper end to the lower end. [Effects of the Invention]

[0009] The separation cap of the present invention does not break the thin inner wall portion when it is attached to the mouth of the container body, and can be broken with a weak force when it is time for separation and disposal, making it easy to separate and dispose of. [Brief explanation of the drawings]

[0010] [Figure 1] 1A and 1B are diagrams showing a container equipped with a hinge cap according to a first embodiment of the present invention, in which (a) is a side cross-sectional view in a closed state, (b) is a top view of a portion of the cap body, and (c) is an enlarged view of the main part at the position of the X-ray cross-sectional arrow in (b). [Figure 2] 1A and 1B are diagrams showing the hinge cap of the first embodiment of the present invention in an open state, in which (a) is a top view, (b) is an enlarged view of the main part of (a), and (c) is an enlarged view of the main part of the side as seen from the direction of the arrow in (a). [Figure 3] 1A and 1B are diagrams showing the hinge cap of the first embodiment of the present invention in an open state, where (a) is a side cross-sectional view and (b) is a bottom view. [Figure 4] 10A and 10B are diagrams showing the hinge cap according to the second embodiment of the present invention in an open state, in which FIG. 10A is a top view, and FIG. 10B is an enlarged view of the main part as seen from the cross-sectional arrow position of the 0-Y line in FIG. [Figure 5] 4A and 4B are diagrams showing a hinge cap according to a second embodiment of the present invention, in which (a) is an enlarged view of the main part of FIG. 4A, and (b) is an enlarged view of the main part of the side view as seen from the direction of the arrow in (a). DETAILED DESCRIPTION OF THE INVENTION

[0011] Next, the sorting cap (hinge cap) of the present invention will be described with reference to the drawings showing embodiments. In the following description, when looking at Figure 1(a), the left side is the "pouring side", the right side is the "rear side", the up and down direction is the "vertical direction", the up direction is the "top", and the down direction is the "bottom".

[0012] Example 1 In FIG. 1, A is a container body, B is a cap body attached to the container body A, and D is a lid body attached to the cap body B via a hinge part C so as to be openable and closable. The container body A has a mouth portion 1 at the top, and a fitting ridge 2 is provided on the upper outer peripheral surface of the mouth portion 1.

[0013] As shown in Figures 1 to 3, the cap body B comprises an attachment portion 3 that is fitted onto the mouth portion 1 of the container body A, an upper wall 4 that extends inward from the inner edge of the attachment portion 3 and seals the opening of the mouth portion 1, a pouring outlet 4a that penetrates the upper wall 4, and a pouring tube 5 that is erected on the upper surface of the upper wall 4 with a diameter slightly wider than the pouring outlet 4a. The spout 4a opens from the center of the cap body B toward the pouring side. In order to make it easier to pour the liquid content, in this embodiment, the pouring side of the pouring tube 5 is formed higher than the back side, and the tip is formed in a trumpet shape.

[0014] The mounting portion 3 is composed of an annular base wall portion 6 that abuts the upper surface of the mouth portion 1 of the container body A, an inner tube 7 that hangs down from the inner side of the base wall portion 6, and an outer wall portion 8 that hangs down from the outer side of the base wall portion 6. A hinge portion C is connected to the upper end of the back side of the outer wall portion 8, and an engaging protrusion 9 is provided at the lower inner periphery that engages with the mating protrusion 2 of the mouth portion 1 of the container body A, and a notched recess 10 is recessed downward on the pouring side. The base wall 6 has a lid engaging portion 11 erected at the top, and a locking protrusion 13 is provided around the outer periphery of the lid engaging portion 11.

[0015] The upper part of the outer peripheral wall 8 has a stepped recess 15 on the pouring side that is recessed from the outer periphery in an arc shape over an arc range of approximately 180°, and on the remaining back side, the upper surface 8a is flush with the upper surface of the upper wall 4, and a hinge portion C is connected to the upper end of the outer periphery. The step recess 15 is formed with a flat surface 15a that is lower than the upper surface 8a, an inclined surface 15b that slopes upward and inward from the inner peripheral edge of the flat surface 15a, and inclined side surfaces 15c that slope from both sides of the end of the flat surface 15a toward both sides of the upper surface 8a.

[0016] 1(b) and 2, a V-shaped outer peripheral cutout 16 is cut into the back surface of the outer peripheral wall 8 from the upper surface 8a, leaving a thin-walled bottom wall 17 at the lower end, and is made up of an end face 16a on the hinge C side when viewed from above from the outer peripheral surface located near the left side of the hinge C, an end face 16b on the opposite side from the hinge C, and a concave surface 16c connecting the two. Also, as shown in FIG. 3(b), an inner peripheral cutout 18 is recessed from the lower end including the engaging protrusion 9 at a position corresponding to the outer peripheral cutout 16 on the inner peripheral side of the outer peripheral wall 8, and as shown in FIG. 1(c), an inner peripheral thin-walled portion 19 with a thickness α is formed between the concave surface 16c of the outer peripheral cutout 16 of the outer peripheral wall 8 and the inner peripheral cutout 18.

[0017] As shown in Figures 1 and 2, thin-walled bottom wall 17 has end face-side inclined surfaces 17a and end face-side inclined surfaces 17b that slope inward from end face 16a and end face 16b, respectively, by a height γ when viewed from the side, and a lowest surface 17c that connects the lower ends of both surfaces and is continuous with the lower end of concave surface 16c. Outer peripheral notch 16 cuts out in a V-shape from above, and connects the lower end of inner peripheral thin-walled portion 19 between lowest surface 17c and the lower end of thin-walled bottom wall 17 to form inward / outward thin-walled portion 20 having a thickness β that is thicker than the thickness α. As shown in Figure 3(b), the inner periphery of the outer wall portion 8 has multiple notches 21 recessed from the lower end, including the engaging protrusion 9, and are arranged at equal intervals, including the inner periphery notch 18.

[0018] In this embodiment, the thickness α of the inner peripheral thin portion 19 is set to 0.25 mm to 0.35 mm, and the thickness β of the inward / outward thin portion 20 is set to be thicker than the inner peripheral thin portion 19, and is formed with a height γ of the end face side inclined surface 17a and the terminal face side inclined surface 17b, and five cut portions 21 are arranged at intervals of 60° each (six locations arranged at intervals of 60° if the inner peripheral cut portion 18 is included).

[0019] A notch 23 is formed on the back side of the outer peripheral wall 8 at the upper part of the hinge C side of the end face 16a of the outer peripheral cutout 16, and a slit groove 24 is recessed from above, starting from the notch 23, passing through the hinge C in an arc shape, and reaching the inclined side surface 15c on the right side as seen from the hinge C of the outer peripheral wall 8. Note that a thin vertical thin portion may be provided instead of the notch 23. The slit groove 24 has a bottom surface 24a formed in an arc shape from a bottommost surface 24aa that is lower than the flat surface 15a of the stepped recess 15 from the cutout portion 23 to approximately the center of the right side on the hinge portion C side, and an inclined bottom surface 24ab that cuts out the inclined side surface 15c from the end of the bottommost surface 24aa and extends at an upward angle to the right end of the flat surface 15a, and between the inside of the bottom surface 24a of the slit groove 24 and the inner periphery of the outer wall portion 8 is a circumferential thin-walled portion 25 with a thin thickness, and the adjacent inner circumferential thin-walled portion 19 and circumferential thin-walled portion 25 can be torn from their respective ends using the cutout portion 23 as the starting point for tearing. The circumferential thin portion 25 may be cut out from the tearing start point of the cutout portion 23 to the area where the hinge portion C is formed.

[0020] On the underside of the upper wall 4, there are provided a straightening tube 27 which extends cylindrically downward from the outlet 4a of the upper wall 4 with a slightly reduced diameter, and a hanging tube 28 which is arranged next to the straightening tube 27 so as to be connected to the back side of the straightening tube 27, has a larger diameter than the straightening tube 27 and extends downward. The flow straightening cylinder 27 has a horizontal hole 29 that penetrates the inner periphery of the hanging cylinder 28 on the side of the peripheral wall facing the hanging cylinder 28, and the lower end of the hole 29 is closed by a bottom wall 30. The hanging cylinder 28 penetrates into the flow straightening cylinder 27 at a horizontal hole 29 on the pouring side, and has a notch 31 on the back side to open.

[0021] As shown in Figures 1 to 3, the lid body D is rotatably attached to the upper outer end of the outer wall portion 8 of the cap body B via a hinge portion C, and is provided with a top wall 35, a side wall 36 extending from the periphery of the top wall 35, and a sealing tube 37 extending from the back surface of the top wall 35 and sealing the dispensing tube 5. The top wall 35 is provided with a deformable thin-walled portion 38 on the outer periphery of the sealing cylinder 37 .

[0022] An engaged portion 40 is provided around the inner periphery of the lower end of the side peripheral wall 36, which engages with the lid engaging portion 11 to maintain the lid in a closed state. The engaged portion 40 has a locking projection 41 on its inward surface that engages with the locking projection 13 of the lid engaging portion 11 . A knob 43 having an arc shape in the circumferential direction is formed on the outer periphery of the side wall 36 at the end on the pouring side, and a hinge C is connected to the end on the back side.

[0023] An arc-shaped covering wall 44 is provided on the outer peripheral edge of the dispensing side of the underside of the side peripheral wall 36, except for the part where the knob portion 43 is formed, so as to be close to or abut the flat surface 15a of the stepped recess 15 so as to cover the stepped recess 15 of the outer peripheral wall portion 8 of the cap body B when the lid is closed. A lightening groove 45 that forms a recessed space is formed in a predetermined range in the side wall 36, and the area between the lightening groove 45 of the side wall 36 where the lightening groove 45 is located and the engaged portion 40 forms an engaging wall 46 that can be deformed when the lid is opened or closed.

[0024] In order to prevent unauthorized opening of the sorting cap of this embodiment before use, a shrink label or sealing member, etc., may be provided between the cap body B and the lid body D, although this is not shown.

[0025] Next, the manner of use and the effects of this embodiment will be described. The sorting cap of this embodiment is integrally molded in the open state shown in FIG. 2(a). In the integral molding of the sorting cap, when the mold is released, the locking protrusion 41 of the engagement wall 46 which is the inner peripheral part of the side peripheral wall 36 is removed after the lightening groove 45 is removed, so that the shape of the locking protrusion 41 can be firmly formed without forcible removal.

[0026] The integrally molded separation cap has a lid body D which rotates via a hinge C and is placed over the cap body B to close the cap. At this time, the outer peripheral surface of the lower part of the sealing tube 37 of the lid body D comes into close contact with the inner peripheral surface of the lower part of the dispensing tube 5 of the cap body B to form a seal. Furthermore, the engaged portion 40 of the side peripheral wall 36 of the lid body D and the lid engaging portion 11 of the cap body B are engaged, maintaining the lid closed.

[0027] Next, the closed separation cap is attached to the mouth 1 of the container body A filled with the liquid content, resulting in a container with a separation cap attached, as shown in FIG. 1(a). In the stoppering process, the mouth 1 of the container body A is placed in the annular groove formed between the inner tube 7 and outer peripheral wall 8 of the attachment portion 3, and a pressing force is applied from above the lid body D, causing the engaging protrusion 9 of the outer peripheral wall 8 to overcome the mating protrusion 2 of the mouth 1 and engage, so that the mouth 1 of the container body A is clamped between the outer periphery of the inner tube 7, the inner periphery of the outer peripheral wall 8, and the base wall 6, thereby attaching the container body A.

[0028] When the stopper is inserted, the lower part of the outer wall 8 is pushed open as the engaging protrusion 9 climbs over the mating ridge 2 of the mouth 1. However, in this embodiment, as shown in FIG. 3, the inner circumferential cutout 18 and the plurality of cutouts 21 recessed from the lower end of the inner periphery of the outer wall 8, including the engaging protrusion 9, allow the thinned portions of the outer wall 8, which are equally spaced (six portions at 60° intervals), to be spread out overall (evenly). Therefore, the portion will not be spread out unevenly, preventing it from climbing over and interfering with the mating, or being damaged.

[0029] In addition, in the inner thin-walled portion 19 of the outer wall portion 8, where the concave surface 16c of the outer cut portion 16 has a thin thickness α (0.25 mm to 0.35 mm) together with the inner cut portion 18, the upper end of the inner thin-walled portion 19 becomes a wall portion adjacent to the cutout portion 23, and there is no end portion that can break, and the lower end is connected to the inward / outward thin-walled portion 20 of the thin-walled bottom wall 17, and in the thin-walled bottom wall 17, the thickness β of the inward / outward thin-walled portion 20 is 0.75 mm, and further, the height γ of the end face side inclined surface 17a and the terminal face side inclined surface 17b on both sides is inclined and thickened to 0.3 mm, so the thin-walled bottom wall 17 will not easily break from the end.

[0030] When the separation cap of this embodiment is applied to a container body A filled with hot liquid, the pressure inside the container body A rises. However, since the top wall 35 has a deformable thin-walled portion 38 formed on the outside of the sealing tube 37, only the inner side of the thin-walled portion 38 of the top wall 35 rises, releasing the pressure outside the dispensing tube 5. This does not interfere with the engagement between the engaging portion 40 of the side wall 36 of the lid body D and the lid engaging portion 11 of the cap body B, and the lid is maintained closed, preventing the lid body D from opening due to an increase in internal pressure when the liquid is hot. Thereafter, the container body A is washed from the outside with shower water and cooled.

[0031] Furthermore, even if an impact force is applied to the top wall 35 of the lid body D when the container is dropped upside down in the closed state, the thin-walled portion 38 absorbs the impact received by the lid body D and the sealing tube 37 is not pushed into or pulled away from the dispensing tube 5, so that the tight contact between the sealing tube 37 and the dispensing tube 5 of the cap body B is not affected, and the sealing tube 37 and the dispensing tube 5 are prevented from coming loose and from damaging each other.

[0032] When using the liquid contents in the container body A, by placing the fingers on the knob 43 of the lid body D and lifting it, the side wall 36 on the pouring side is lifted and the engaging wall 46 is deformed from the bottom toward the space of the lightening groove 45, making it easier for the engaging protrusion 41 at that part to disengage from the engaging protrusion 13 of the lid engaging part 11, thereby reducing the force required to disengage. When the knob 43 is further lifted, the seal between the sealing tube 37 of the lid body D and the dispensing tube 5 of the cap body B is released, and the lid body D is opened.

[0033] When the container is tilted with the lid body D open, the liquid contents in the container body A pass through the inside of the hanging tube 28 on the underside of the upper wall 4, the horizontal hole 29 of the straightening tube 27, and the inside of the straightening tube 27 and the bottom wall 30 to reach the pouring outlet 4a, and are then poured out of the pouring tube 5 through the pouring outlet 4a. During this process, the liquid content passes through the horizontal hole 29 of the flow straightening cylinder 27, causing it to flow in a direction that intersects the vertical direction once, but then passes through the inside of the flow straightening cylinder 27, whereby the flow is straightened in the vertical direction. Moreover, in this embodiment, the liquid content in the container body A passes through the hanging tube 28 before reaching the horizontal hole 29 of the flow straightening tube 27. Therefore, even if the container is forcefully tilted, for example, the flow of the liquid content is prevented from being disturbed, which makes it easier to pour the liquid content in the desired direction.

[0034] By closing the lid body D again on the cap body B, the outer periphery of the sealing tube 37 of the lid body D adheres tightly to the inner periphery of the dispensing tube 5 of the cap body B to form a seal, thereby sealing the inside of the container body A, and the sorting cap can be used repeatedly by opening and closing the lid body D. The sorting cap of this embodiment has a stepped recess 15 formed with a flat surface 15a and an inclined surface 15b on the pouring side of the outer wall portion 8 of the cap body B. Therefore, even if liquid drips from the pouring tube 5 in the direction in which the container body A is tilted during use and into the lower stepped recess 15, the inclination of the inclined surface 15b will cause the liquid to flow from the flat surface 15a to the cutout recess 10, so that the dirt can be easily wiped off with tissue or the like.

[0035] Next, a mode in which the separation cap is separated and discarded from the container body A after the liquid content in the container body A has been used up will be described. In this case, the sorting cap is opened, and the lid body D is grasped with the fingers and pulled outward, and the outer side is pulled via the hinge portion C through the slit groove 24, which is the connecting portion of the hinge portion C of the outer wall portion 8 of the cap body B. When the outer side of the slit groove 24 of the outer peripheral wall portion 8 connected to the hinge portion C is pulled, the notch portion 23 connected to the inner side of the slit groove 24 is pulled outward and spread, and is torn from the edge.

[0036] Furthermore, when the outer peripheral wall portion 8 is pulled outward, force is applied to the ends of the inner peripheral thin-walled portion 19 and the circumferential thin-walled portion 25 adjacent to the cutout portion 23, causing each to tear from the end, tearing the inner peripheral thin-walled portion 19 and the inner / outer thin-walled portion 20 of the thin-walled bottom wall 17 and tearing the outer peripheral wall portion 8 vertically, and also tearing the circumferential thin-walled portion 25 circumferentially, cutting off that portion of the outer peripheral wall portion 8 in a strip-like shape, and the engagement between the engaging protrusion 9 at the bottom of that portion of the outer peripheral wall portion 8 and the engaging protrusion 2 of the container body A is released. When the circumferential thin portion 25 is cut off and the lower portion of the band-shaped outer peripheral wall portion 8 is pulled upward, the other continuous portions of the outer peripheral wall portion 8 are pulled upward, disengaging the fitting portion 3 of the cap body B attached to the mouth portion 1 of the container body A, and the cap body B can be separated from the container body A.

[0037] In this embodiment, the thickness α of the inner thin-walled portion 19 of the outer wall portion 8 is 0.25 mm to 0.35 mm, and the thickness β of the inward / outward thin-walled portion 20 of the thin-walled bottom wall 17 increases stepwise from top to bottom. Therefore, after the 0.25 mm to 0.35 mm inner thin-walled portion 19 breaks, a breaking force is applied from the inner end of the inward / outward thin-walled portion 20, which is efficient. Furthermore, the upper surface of the thin-walled bottom wall 17 is recessed in a V-shape that descends by a height γ from both sides toward the inward / outward thin-walled portion 20, so that the force toward the inward / outward thin-walled portion 20 is concentrated, and the inward / outward thin-walled portion 20 can be broken with a weak force. The section from the notch 23 to the outer end of the continuous inner peripheral thin-walled part 19 and the inner / outer thin-walled part 20 of the thin-walled bottom wall 17 can be broken without resistance and with a weak force, and the outer peripheral wall part 8 can be easily broken in the vertical direction.

[0038] Example 2 Next, a second embodiment in which the shape of the outer peripheral cut portion 16 of the cap body B in the first embodiment is changed will be described with reference to the drawings. In the following, the same components as those in the first embodiment are given the same reference numerals, and new reference numerals are given to changed components, and differences will be mainly described.

[0039] In FIG. 4, A is a container body, Ba is a cap body attached to the container body A, and D is a lid body attached to the cap body B via a hinge part C so as to be able to open and close.

[0040] 4(a) and 5, a V-shaped outer peripheral cutout 50 is cut into the back side of the outer peripheral wall 8 of the cap body Ba from the upper surface 8a, leaving a thin-walled bottom wall 51 at the lower end, and is composed of an end face 50a on the hinge C side and an end face 50b on the opposite side from the hinge C in a top view from the outer peripheral surface located near the left side of the hinge C, and a concave surface 50c connecting the two. Also, as shown in FIG. 4(b), an inner peripheral cutout 52 is recessed from the lower end, including the engaging protrusion 9, at a position corresponding to the outer peripheral cutout 50, and an inner peripheral thin-walled portion 53 is formed between the concave surface 50c of the outer peripheral cutout 50 of the outer peripheral wall 8 and the inner peripheral cutout 52, which gradually increases in thickness from α1 to α2.

[0041] The inner thin-walled portion 53 is composed of an upper thin-walled portion 53a that is flat from the upper end with a thickness of α1, a connecting thin-walled portion 53b that slopes outward from the lower end of the upper thin-walled portion 53a and thickens downward to a thickness of α2, and a lower thin-walled portion 53c that extends downward with a thickness of α2 from the lower end of the connecting thin-walled portion 53b. In this embodiment, the connecting thin-walled portion 53b has an inclined surface whose thickness gradually increases from the upper end to the lower end, but it may also have a stepped surface whose thickness increases in stages from the upper end to the lower end. As shown in Figure 5(b), the thin-walled bottom wall 51 has an end face-side inclined surface 51a and an end face-side inclined surface 51b that slope inward from the end face 50a side and the end face 50b side by a height γ when viewed from the side, and a lowest surface 51c that connects the lower ends of both and is continuous with the lower end of the concave surface 50c. The lowest surface 51c is cut in a V shape from above by the outer circumferential notch 50, and is connected to the lower end of the lower thin portion 53c of the inner circumferential thin portion 53 between the lower end of the thin-walled bottom wall 51, and an inward / outward thin portion 54 with a thickness β that is thicker than the thickness α2 is formed. In this embodiment, the end face-side inclined surface 51b is formed wider than the end face-side inclined surface 51a so that the lower thin portion 53c and the inward / outward thin portion 54 are formed parallel to the end face 50a at a position closer to the end face 50a of the thin-walled bottom wall 51.

[0042] In this embodiment, the thickness α1 of the upper thin-walled portion 53a of the inner thin-walled portion 53 is 0.25 mm to 0.35 mm, the thickness α2 of the lower thin-walled portion 53c is 0.35 mm to 0.45 mm, the connecting thin-walled portion 53b gradually becomes thicker from the thickness α1 to the thickness α2, and the thickness β of the inner / outer thin-walled portion 54 is set thicker than the thickness α1 to the thickness α2, and is formed by the height γ of the end face side inclined surface 51a and the terminal face side inclined surface 51b. The inner / outer thin portion 54 has the shortest inner / outer width along the end face 50a.

[0043] On the back side of the outer peripheral wall portion 8, a thin-walled notch portion 23 is formed at the upper part of the hinge portion C side of the end face 50a of the outer peripheral cutout portion 50, and an arc-shaped slit groove 24 is recessed from above, starting from the notch portion 23 and passing through the hinge portion C side.

[0044] Next, the manner of use and the effects of this embodiment will be described. In the sorting cap of this embodiment, when the cap is fitted, the upper end of the upper thin-walled portion 53a of the inner thin-walled portion 53 of the outer wall 8 of the cap body Ba becomes a wall portion adjacent to the cutout portion 23, and there is no end portion that can break, and the lower end of the lower thin-walled portion 53c of the inner thin-walled portion 53 is connected to the inward / outward thin-walled portion 54 of the thin-walled bottom wall 51, and the thickness β of the inward / outward thin-walled portion 54 of the thin-walled bottom wall 51 is 0.75 mm, and furthermore, the height γ of the end face side inclined surface 51a and the terminal face side inclined surface 51b on both sides is inclined and thickened to 0.3 mm, so that the thin-walled bottom wall 51 will not easily break from the end.

[0045] Next, a mode in which the separation cap is separated and discarded from the container body A after the liquid content in the container body A has been used up will be described. In this case, the separation cap is opened, and the lid body D is grasped with the fingers and pulled outward. This pulls the outer side of the slit groove 24, which is the connecting part of the hinge part C of the outer wall part 8 of the cap body Ba, via the hinge part C, and tears it from the cutout part 23 that connects to the inside of the slit groove 24. Next, force is applied to the ends of the inner thin-walled part 53 and the circumferential thin-walled part 25 adjacent to the cutout part 23, tearing them from their ends, tearing the inner thin-walled part 53 and the inner / outer thin-walled part 54 of the thin-walled bottom wall 51 and tearing the outer wall part 8 vertically.

[0046] In this embodiment, the inner thin-walled portion 53 of the outer wall portion 8 is formed by an upper thin-walled portion 53a having a thickness α1 of 0.25 mm to 0.35 mm and a lower thin-walled portion 53c having a thickness α2 of 0.35 mm to 0.45 mm, which are continuously formed via an intermediate connecting thin-walled portion 53b, and the thickness increases stepwise from the upper end to the lower end, so that a breaking force is applied efficiently from above.

[0047] Furthermore, since the thickness β of the inward / outward thin portion 54 of the thin bottom wall 51 is formed parallel to the end face 50a at a position on the thin bottom wall 51 closer to the end face 50a, the breaking force is applied from above the lower thin portion 53c, and the breaking force is applied efficiently in the shortest possible time. Furthermore, since the upper surface of the thin bottom wall 51 is recessed in a V shape that descends by a height γ from the left and right toward the inward / outward thin portion 54, the force acting toward the inward / outward thin portion 54 is concentrated, and the inward / outward thin portion 54 can be broken with a weak force. The section from the upper end of the notch 23 to the inner wall of the continuous inner peripheral thin-walled section 53 and the outer end of the inner / outer thin-walled section 54 of the thin-walled bottom wall 51 can be broken with little resistance and with a weak force, and the outer peripheral wall section 8 can be easily broken in the vertical direction. Other functions and effects are the same as those of the first embodiment. [Industrial Applicability]

[0048] The sorting cap of the present invention does not break the thin inner wall portion when it is attached to the mouth of the container body, and can be broken with a weak force when it is time for separate disposal, allowing for easy separate disposal, making it suitable as a sorting cap to be attached to the mouth of a container body that contains various liquid contents. [Explanation of symbols]

[0049] A Container body B, Ba cap body C Hinge part D Lid body α, α1, α2, β wall thickness γ Height 1 Mouth 2 Mating ridges 3. Mounting part 4 Upper wall 4a spout 5 Pour tube 6 Base wall part 7 Inner cylinder 8 Outer wall 8a Top 9 Engagement protrusion 10. Notched recess 11 Lid engagement part 13 Locking ridge 15 Step recess 15a Flat surface 15b Inclined surface 15c Inclined side surface 16, 50 Outer peripheral cut portion 16a, 50a End face 16b, 50b Terminal end face 16c, 50c Concave surface 17, 51 Thin bottom wall 17a, 51a End face side inclined surface 17b, 51b Terminal end face side inclined surface 17c, 51c Lowest surface 18, 52 Inner peripheral cut portion 19, 53 Inner peripheral thin portion 20, 54 Inner - outer direction thin portion 21 Cut portion 23 Notch portion 24 Slit groove 24a Bottom surface 24aa Lowest bottom surface 24ab Inclined bottom surface 25 Circumferential direction thin portion 27 Rectifying cylinder 28 Hanging cylinder 29 Horizontal hole 30 Bottom wall 31 Notch 35 Top wall 36 Side peripheral wall 37 Sealing cylinder 38 Thin portion 40 Engaged portion 41 Locking projection 43 Knob 44 Covering wall 45 Relief groove 46 Engaging wall 53a Upper thin portion 53b Connecting thin portion 53c Lower thin portion

Claims

1. A separation cap comprising a cap body attached to a container body and a lid body connected to the cap body via a hinge portion, The cap body has an outer peripheral wall portion that is fitted to the mouth of the container body, the outer peripheral wall portion comprises an end face on the hinge portion side from the outer peripheral upper surface located near the hinge portion, an end face on the opposite side to the hinge portion, and a concave surface connecting the end face and the end face; an outer peripheral cutout portion that is V-shaped in top view and cut vertically leaving a thin-walled bottom wall; a slit groove that is recessed from the end face of the outer peripheral cutout portion through the hinge portion and over a predetermined arc range; an inner peripheral cutout portion that is recessed upward from the inner peripheral side of the lower end corresponding to the outer peripheral cutout portion; and an inner peripheral thin-walled portion that is formed between the outer peripheral cutout portion and the inner peripheral cutout portion and that breaks during separation; The thin bottom wall of the sorting cap is formed in a V-shape when viewed from the side.

2. 2. The separation cap according to claim 1, wherein the thin-walled bottom wall is cut inwardly at an angle from the end face side and the terminal end face side of the outer peripheral cut portion, forming a bottom surface.

3. The separation cap according to claim 1 or 2, characterized in that the inner thin-walled portion comprises an upper thin-walled portion having a uniform thickness, a lower thin-walled portion having a uniformly thicker thickness than the upper thin-walled portion, and a connecting thin-walled portion connecting the lower end of the upper thin-walled portion to the upper end of the lower thin-walled portion, the thickness of which increases from the upper end to the lower end.

4. 4. The separation cap according to claim 3, wherein the connecting thin portion has an inclined surface whose thickness increases from the upper end to the lower end.

5. 4. The separation cap according to claim 3, wherein the connecting thin-walled portion has a stepped surface whose thickness increases from the upper end to the lower end.

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