WO2022137974A1 - 口栓、包装容器、及び口栓の製造方法 - Google Patents
口栓、包装容器、及び口栓の製造方法 Download PDFInfo
- Publication number
- WO2022137974A1 WO2022137974A1 PCT/JP2021/043255 JP2021043255W WO2022137974A1 WO 2022137974 A1 WO2022137974 A1 WO 2022137974A1 JP 2021043255 W JP2021043255 W JP 2021043255W WO 2022137974 A1 WO2022137974 A1 WO 2022137974A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- spout
- cap
- peripheral wall
- band portion
- hook
- Prior art date
Links
- 238000004806 packaging method and process Methods 0.000 title claims description 19
- 238000004519 manufacturing process Methods 0.000 title description 13
- 230000002093 peripheral effect Effects 0.000 claims abstract description 159
- 238000000034 method Methods 0.000 claims description 8
- 238000012986 modification Methods 0.000 description 11
- 230000004048 modification Effects 0.000 description 11
- 238000005452 bending Methods 0.000 description 10
- 230000000087 stabilizing effect Effects 0.000 description 10
- 239000011347 resin Substances 0.000 description 9
- 229920005989 resin Polymers 0.000 description 9
- 230000007423 decrease Effects 0.000 description 5
- 238000000465 moulding Methods 0.000 description 5
- 239000007788 liquid Substances 0.000 description 4
- 238000013459 approach Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000013256 coordination polymer Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000005022 packaging material Substances 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 239000004278 EU approved seasoning Substances 0.000 description 1
- 125000002066 L-histidyl group Chemical group [H]N1C([H])=NC(C([H])([H])[C@](C(=O)[*])([H])N([H])[H])=C1[H] 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 235000013334 alcoholic beverage Nutrition 0.000 description 1
- 235000013361 beverage Nutrition 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 235000011194 food seasoning agent Nutrition 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 229920000092 linear low density polyethylene Polymers 0.000 description 1
- 239000004707 linear low-density polyethylene Substances 0.000 description 1
- 229920001684 low density polyethylene Polymers 0.000 description 1
- 239000004702 low-density polyethylene Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000123 paper Substances 0.000 description 1
- -1 polypropylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 238000009751 slip forming Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D5/00—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper
- B65D5/42—Details of containers or of foldable or erectable container blanks
- B65D5/72—Contents-dispensing means
- B65D5/74—Spouts
- B65D5/746—Spouts formed separately from the container
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D41/00—Caps, e.g. crown caps or crown seals, i.e. members having parts arranged for engagement with the external periphery of a neck or wall defining a pouring opening or discharge aperture; Protective cap-like covers for closure members, e.g. decorative covers of metal foil or paper
- B65D41/32—Caps or cap-like covers with lines of weakness, tearing-strips, tags, or like opening or removal devices, e.g. to facilitate formation of pouring openings
- B65D41/34—Threaded or like caps or cap-like covers provided with tamper elements formed in, or attached to, the closure skirt
- B65D41/3404—Threaded or like caps or cap-like covers provided with tamper elements formed in, or attached to, the closure skirt with ratchet-and-pawl mechanism between the container and the closure skirt or the tamper element
- B65D41/3409—Threaded or like caps or cap-like covers provided with tamper elements formed in, or attached to, the closure skirt with ratchet-and-pawl mechanism between the container and the closure skirt or the tamper element the tamper element being integrally connected to the closure by means of bridges
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D41/00—Caps, e.g. crown caps or crown seals, i.e. members having parts arranged for engagement with the external periphery of a neck or wall defining a pouring opening or discharge aperture; Protective cap-like covers for closure members, e.g. decorative covers of metal foil or paper
- B65D41/32—Caps or cap-like covers with lines of weakness, tearing-strips, tags, or like opening or removal devices, e.g. to facilitate formation of pouring openings
- B65D41/34—Threaded or like caps or cap-like covers provided with tamper elements formed in, or attached to, the closure skirt
- B65D41/3423—Threaded or like caps or cap-like covers provided with tamper elements formed in, or attached to, the closure skirt with flexible tabs, or elements rotated from a non-engaging to an engaging position, formed on the tamper element or in the closure skirt
- B65D41/3428—Threaded or like caps or cap-like covers provided with tamper elements formed in, or attached to, the closure skirt with flexible tabs, or elements rotated from a non-engaging to an engaging position, formed on the tamper element or in the closure skirt the tamper element being integrally connected to the closure by means of bridges
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D2401/00—Tamper-indicating means
- B65D2401/15—Tearable part of the closure
- B65D2401/25—Non-metallic tear-off strips
Definitions
- This disclosure relates to a spout, a packaging container, and a method for manufacturing the spout.
- Patent Document 1 discloses a spout for pouring provided in a container for containing a liquid or the like.
- a cap is attached to the spout of the spout, and it can be opened by rotating the cap.
- Patent Document 2 discloses a nozzle structure of a bottle with an enhanced tamper evidence function.
- Patent Document 3 discloses a composite container lid composed of a combination of a lid main body, an inner lid made of a thin metal plate, and an upper lid.
- the present disclosure provides a mouthpiece, a packaging container, and a method for manufacturing the mouthpiece, which is useful for stabilizing the quality of the band portion.
- the spout includes a spout, a cap, a band portion, and a rib.
- the spout has a cylindrical side wall, an external screw provided on the outer peripheral surface of the side wall, and a flange provided on one end side of the side wall.
- the cap has a top plate, a peripheral wall connected to the outer peripheral edge of the top plate, and an internal screw provided on the inner peripheral surface of the peripheral wall and screwed with an external screw.
- the band portion is connected to one end of the peripheral wall and secures the cap to the spout between the peripheral wall and the spout.
- the rib connects the peripheral wall and the band portion, and projects from the inner peripheral surface of the end portion of the peripheral wall and the inner peripheral surface of the band portion toward the inside of the cap.
- the spout is provided on the side wall and further has a protrusion that regulates the movement of the cap and the band portion with respect to the spout.
- the band portion and the peripheral wall are separated by a notch located above the portion of the protrusion facing the peripheral wall, and the notch extends to the inside of the rib.
- the boundary between the band portion and the peripheral wall and the notch formed in the rib are located between the portion of the protrusion facing the peripheral wall and the top plate. Therefore, when the notch is formed by using a blade such as a cutter, the ribs come into contact with the protrusions, so that the peripheral wall and the band portion can be prevented from bending inward. Therefore, the notch can be formed stably. Therefore, this spout is useful for stabilizing the quality of the band portion.
- the thickness of the rib may be 0.4 mm to 0.6 mm. In this case, it is easy to form a notch in a part of the rib to obtain a thin wall portion.
- the band portion may be connected to one end of the peripheral wall of the cap so that the band portion and the cap are separated when the cap is removed from the spout.
- a gap may be provided between the lower end of the band portion and the portion of the flange facing the lower end of the band portion.
- the width of the gap may be 0.5 mm or more. In this case, the band portion is once separated from the cap, and when the cap is reattached to the spout, a gap is formed between the band portion and the cap. Since the width of the gap can be about 0.5 mm or more, it is useful for improving the visibility of the gap after opening.
- the distance between the lower end of the band portion and the notch may be 6.0 mm or less. In this case, it is easy to secure the size of the cap or the gap.
- the band portion may have a cylindrical main body provided with ribs and a hook portion inclined from the lower end portion of the main body toward the top plate.
- the hook portion may be restricted from separating the cap from the spout by abutting on the protrusion. In this case, it is possible to prevent the cap from being unintentionally opened.
- the hook portion may be arranged so as to face the lower surface of the protrusion in a state of being separated from the spout. By bending the hook portion, a restoring force that tends to fall toward the spout may be generated at the hook portion. By sandwiching the spout in a state where the hook portion is in contact with the spout due to the restoring force, there is a possibility that the band portion stays in the original position and does not fall down when the cap is removed.
- the hook portion since the hook portion is arranged so as to face the lower surface of the protrusion in a state of being separated from the spout, it is difficult for the hook portion to come into contact with the spout when the cap is removed. As a result, in the above configuration, the separated band portion can smoothly fall. Therefore, it is useful for stabilizing the quality of the band portion.
- a plurality of hook portions may be arranged at intervals along the circumferential direction around the central axis of the cap.
- the band portion may have a plurality of thin-walled portions having a thickness smaller than the plurality of hook portions by connecting the hook portions adjacent to each other among the plurality of hook portions. Even if one of the hook portions tries to fall toward the central axis due to the restoring force, since it is connected by a plurality of thin-walled portions, the movement to fall is restricted. Therefore, it is possible to reduce the possibility that the hook portion falls toward the central axis and comes into contact with the spout. Therefore, it is useful for stabilizing the quality of the band portion.
- the packaging container according to one aspect of the present disclosure includes any of the above-mentioned spouts and a container body to which the spout is attached. Since this packaging container is provided with any of the above-mentioned spouts, it is useful for stabilizing the quality of the band portion.
- a method of manufacturing a spout according to one aspect of the present disclosure is a spout having a cylindrical side wall provided with an external screw, a flange provided on one end side of the side wall, and a protrusion protruding outward from the side wall.
- a cap member having a top plate, a peripheral wall connected to the outer peripheral edge of the top plate and provided with an internal screw on the inner peripheral surface, and a rib protruding from the inner peripheral surface of the peripheral wall.
- the process, the process of screwing the internal screw into the external screw and attaching the cap member to the spout, and the process of attaching the cap member to the spout, at a position above the portion of the protrusion facing the peripheral wall, the peripheral wall. Includes the step of forming a notch extending from the outer edge of the rib to the inside of the rib.
- this manufacturing method when a notch is formed by using a blade such as a cutter, the ribs come into contact with the protrusions, so that the peripheral wall of the cap member can be suppressed from bending inward. Therefore, the notch can be formed stably. Therefore, this manufacturing method is useful for stabilizing the quality of the band portion contained in the spout.
- a spout, a packaging container, and a method for manufacturing a spout useful for stabilizing the quality of the band portion are provided.
- FIG. 1 is a perspective view showing an example of a packaging container provided with a spout.
- FIG. 2 is a side view showing an example of an unopened mouth plug.
- FIG. 3 is a cross-sectional view showing an example of a spout.
- FIG. 4 is a side view showing an example of a mouth plug after opening.
- FIG. 5 is a cross-sectional view showing an example of the boundary between the cap and the band portion.
- FIG. 6 is a perspective view showing an example of the inside of the cap and the band portion.
- FIG. 7 is a plan view showing an example of the cap.
- FIG. 8 is a cross-sectional view showing a spout according to the first modification.
- FIG. 9 is a bottom view showing an example of the band portion.
- FIG. 10 is an enlarged view of the portion shown by X-ray in FIG.
- FIG. 11A is a schematic view illustrating the state of bending of the hook portion.
- FIG. 11B is a schematic diagram for explaining the shape of the thin-walled portion.
- FIG. 12 is a cross-sectional view showing a spout according to Modification 2.
- FIG. 13 is a bottom view showing the spout according to the modified example 3.
- FIG. 1 shows a perspective view of a packaging container according to an embodiment.
- the packaging container 1 is a container for accommodating the contents.
- the contents contained in the packaging container 1 may be in the form of a liquid, and specific examples thereof include alcoholic beverages, beverages, seasonings and the like.
- the packaging container 1 includes a container body 2 and a spout 4.
- the container main body 2 is a main body portion for accommodating contents such as liquid. Examples of the material of the container body 2 include paper, resin, and glass.
- the material of the container body 2 may be a laminate of paper and resin.
- a spout 4 is attached to the container body 2.
- the spout 4 is a member that forms a spout for pouring the contents from the packaging container 1 (container body 2).
- FIG. 2 shows a side view of the spout 4
- FIG. 3 shows a vertical cross section of the spout 4 shown in FIG.
- the spout 4 includes a cap 10, a spout 40, and a band portion 50.
- the cap 10 is fixed (attached) to the spout 40.
- the cap 10, the spout 40, and the band portion 50 may all be made of resin.
- the cap 10 and the band portion 50 may be made of polypropylene resin.
- the spout 40 may be made of a low-density polyethylene resin, and among them, a linear low-density polyethylene resin may be used.
- each of the cap 10, the spout 40, and the band portion 50 will be described.
- the terms "inside” and "outside” will be used with reference to the central axis Ax of the spout 4 (see FIG. 3), and the direction toward the central axis Ax will be "inside”, and the user will be separated from the central axis Ax. The direction is "outside".
- the central axis Ax of the spout 4 coincides with the central axis Ax of the cap 10.
- the direction along the central axis Ax is defined as "vertical direction", the direction in which the cap 10 separates from the spout 40 is defined as “upward”, and the direction in which the cap 10 approaches the spout 40 is defined as “downward”.
- the cap 10 has a top plate 12, a peripheral wall 14, an internal screw 15, and an inner ring 16.
- the top plate 12 is formed in a disk shape.
- a tapered portion 18 is formed on the outer peripheral edge of the top plate 12.
- the peripheral wall 14 extends downward from the tapered portion 18 and has a cylindrical shape. In this way, the upper end of the peripheral wall 14 is connected to the outer peripheral edge of the top plate 12.
- the central axis Ax of the spout 4 (the central axis Ax of the cap 10) may pass through the center of the top plate 12 and may be orthogonal to the upper surface of the top plate 12.
- a knurl 20 is formed on the outer peripheral surface of the peripheral wall 14.
- the knurl 20 is composed of, for example, a plurality of protrusions 22 and a plurality of bases 24, as shown in FIG.
- the plurality of protrusions 22 and the plurality of bases 24 are alternately arranged one by one along the circumferential direction about the central axis Ax of the cap 10. That is, in the circumferential direction, each protrusion 22 is sandwiched between a pair of bases 24, and each base 24 is sandwiched between a pair of protrusions 22. Details of the protrusion 22 and the base 24 will be described later.
- the peripheral wall 14 may include a base portion 28 provided below the knurl 20.
- the base portion 28 has a cylindrical shape.
- a band portion 50 is connected to the lower end of the base portion 28.
- the knurl 20 is formed between the lower end of the tapered portion 18 and the upper end of the base portion 28. It is not essential that the cap 10 has the tapered portion 18 and the base portion 28, and for example, the knurl 20 may be formed on the entire peripheral wall 14 of the cap 10.
- the internal screw 15 is provided on the inner peripheral surface of the peripheral wall 14.
- the inner ring 16 is provided on the inner surface (lower surface) of the top plate 12.
- the inner ring 16 extends from the inner surface of the top plate 12 along the peripheral wall 14 and has a cylindrical shape.
- the inner ring 16 is arranged inside the peripheral wall 14 with a gap provided between the inner ring 16 and the peripheral wall 14.
- the spout 40 has a side wall 42, an external screw 43, and a flange 44.
- the side wall 42 has a cylindrical shape.
- the diameter of the side wall 42 is smaller than the diameter of the peripheral wall 14 of the cap 10. That is, the distance between the side wall 42 and the central axis Ax is smaller than the distance between the peripheral wall 14 and the central axis Ax.
- the external screw 43 is formed on the outer peripheral surface of the side wall 42 (provided on the outer peripheral surface of the upper half of the side wall 42).
- the internal screw 15 of the peripheral wall 14 of the cap 10 is screwed into the external screw 43.
- the upper end portion (upper end and the portion in the vicinity thereof) of the side wall 42 is inserted between the peripheral wall 14 of the cap 10 and the inner ring 16.
- the side wall 42 is in close contact with the peripheral wall 14 and the inner ring 16 at a plurality of locations. As a result, leakage of the contents (for example, liquid leakage) from between the spout 40
- the flange 44 is provided on one end side of the side wall 42.
- the flange 44 is connected to the lower end of the side wall 42 and extends outward from the side wall 42.
- the flange 44 has a cylindrical shape (formed in an annular shape).
- the flange 44 is a joint portion when the spout 4 is attached to the container body 2.
- the packaging material of the container body 2 may be joined to one surface 44a of the flange 44.
- the packaging material and the flange 44 may be joined by ultrasonic welding, adhesion, or the like.
- the flange 44 includes a ring portion 46 that connects the portion on which the surface 44a is formed (hereinafter, referred to as “flange portion 45”) and the side wall 42.
- the ring portion 46 is arranged inside the flange portion 45, and is connected to, for example, the vicinity of the lower end portion of the side wall 42 (the side surface of the lower end portion).
- the band portion 50 is attached to the lower end of the peripheral wall 14 of the cap 10.
- the band portion 50 is connected to the lower end of the base portion 28 included in the peripheral wall 14.
- the band portion 50 has a cylindrical shape.
- the diameter (outer diameter) of the band portion 50 substantially coincides with the diameter (outer diameter) of the peripheral wall 14 of the cap 10.
- the band portion 50 has a function of fixing the cap 10 to the spout 40 between the peripheral wall 14 of the cap 10 and the spout 40.
- the band portion 50 is arranged between the peripheral wall 14 and the ring portion 46 of the spout 40, and restricts the cap 10 from separating from the spout 40.
- a gap g is provided between the lower end of the band portion 50 and the portion of the flange 44 facing the lower end of the band portion 50.
- a gap g is formed between the lower end of the band portion 50 and the upper end of the ring portion 46 of the flange 44. This gap g is provided for the purpose of preventing tampering.
- the band portion 50 has a peripheral wall so that the band portion 50 and the cap 10 are separated when the cap 10 in the unopened state (the state in which the cap 10 is fixed to the spout 40) is removed from the spout 40. It is connected to 14.
- the unopened state (unopened state) is an initial state in which the cap 10 has never been removed.
- the band portion 50 and the cap 10 are separated (separated), the band portion 50 and the cap 10 are not connected to each other. That is, when the cap 10 is removed from the spout 40, the band portion 50 and the cap 10 are connected to each other so that the band portion 50 remains in the spout 40. In this case, when the cap 10 is removed from the spout 40 and opened, the band portion 50 remains in the spout 40.
- the band portion 50 separated from the cap 10 can move downward so that its lower end abuts on the ring portion 46 of the flange 44.
- the gap g is formed so that the band portion 50 falls downward when the band portion 50 is separated from the cap 10.
- FIG. 4 shows a side view of the spout 4 when the cap 10 once opened is reattached to the spout 40.
- the width (size) of the gap g1 formed at this time corresponds to (substantially matches) the width of the above-mentioned gap g in the unopened state.
- the width w of the gap g (width of the gap g1) may be 0.5 mm or more.
- the width w of the gap g corresponds to the shortest distance between the lower end of the band portion 50 and the upper end of the ring portion 46 of the flange 44.
- the width w may be 0.7 mm or more, 0.8 mm or more, 0.9 mm or more, or 1.0 mm or more. ..
- the width w may be 2.0 mm or less, 1.8 mm or less, 1.6 mm or less, or 1.4 mm or less. good.
- the width w is 1.0 mm to 1.4 mm, or 1.1 mm to 1.3 mm.
- FIG. 5 shows a cross section along the VV line shown in FIG.
- the VV line corresponds to the boundary between the band portion 50 and the peripheral wall 14 of the cap 10.
- FIG. 6 schematically shows the inside of the band portion 50 and the cap 10.
- the band portion 50 has a main body 52 (band main body) and a plurality of hook portions 54.
- the main body 52 is arranged below the peripheral wall 14 of the cap 10 and has a cylindrical shape.
- the diameter (outer diameter) of the main body 52 is substantially the same as the diameter (outer diameter) of the base portion 28 of the peripheral wall 14.
- the plurality of hook portions 54 are connected to the lower end portion of the main body 52, and are inclined (inclined and extended) from the lower end portion (lower part of the inner peripheral surface) toward the top plate 12 of the cap 10. ).
- the hook portion 54 is inclined so that the distance between the central axis Ax and the hook portion 54 decreases as it approaches the top plate 12.
- the plurality of hook portions 54 are provided at predetermined intervals along the circumferential direction around the central axis Ax.
- the hook portion 54 has a function of restricting the cap 10 from being relatively separated from the spout 40.
- the hook portion 54 may be referred to as a flap.
- the spout 4 includes a break portion 60.
- the broken portion 60 connects the main body 52 and the peripheral wall 14 of the cap 10 so that the band portion 50 and the cap 10 are separated when the cap 10 is removed from the spout 40.
- the broken portion 60 includes a plurality of ribs 70.
- the plurality of ribs 70 are provided on the inner peripheral surface of the main body 52 of the band portion 50, and project from the inner peripheral surface toward the inside (central axis Ax) (see also FIG. 6).
- the plurality of ribs 70 are provided at predetermined intervals along the circumferential direction around the central axis Ax.
- the plurality of ribs 70 and the plurality of hook portions 54 are alternately arranged one by one in the circumferential direction around the central axis Ax.
- the thickness of the rib 70 (the amount of protrusion from the inner peripheral surface of the main body 52) is smaller than the amount of protrusion of the hook portion 54 from the inner peripheral surface of the main body 52.
- the ribs 70 are provided on the inner peripheral surface of the main body 52 and the inner peripheral surface of the base portion 28 of the cap 10 (protruding from these inner peripheral surfaces). ).
- the left half of the cross-sectional view shown in FIG. 3 shows the cross section at the position where the hook portion 54 is provided, and the right half of the cross-sectional view shows the cross section at the position where the rib 70 is provided.
- a cross section is shown.
- a notch 80 extending to the inside of the rib 70 (for example, substantially the center) is formed at the boundary between the lower end of the base portion 28 on the peripheral wall 14 of the cap 10 and the upper end of the main body 52 of the band portion 50. In this way, the cap 10 and the band portion 50 are separated by the notch 80.
- the outside of the cap 10 is located at a height position which is a boundary between the base portion 28 and the band portion 50.
- a notch 80 is formed extending from the rib 70 to a position where the rib 70 does not separate.
- the notch 80 is continuously formed along the circumferential direction around the central axis Ax.
- the cap 10 and the band portion 50 are formed (separated), and the peripheral wall 14 (base portion 28) and the band portion 50 are portions where the notch 80 of the rib 70 is not formed (hereinafter, "thin wall portion 82"). They are connected to each other via.). That is, the plurality of ribs 70 connect the peripheral wall 14 and the band portion 50.
- the thin portion 82 is a portion of the rib 70 in which the notch 80 is not formed at the height position of the notch 80.
- the spout 40 has a protrusion 48.
- the protrusion 48 is formed on the side wall 42 of the spout 40, and projects outward from the side wall 42.
- the protrusion 48 has a cylindrical shape and is continuously provided on the outer peripheral surface of the side wall 42 below the external screw 43 along the circumferential direction.
- the protrusion 48 includes a facing surface 48a facing the inner peripheral surface of the base portion 28 and the main body 52 in a state where the cap 10 is fixed to the spout 40.
- the facing surface 48a extends along the peripheral wall 14 (or the main body 52). A part of the facing surface 48a is close to the rib 70.
- the hook portion 54 is arranged so that its tip faces the lower end (lower surface) of the protrusion 48.
- the cap 10 is restricted from being separated from the spout 40. That is, the protrusion 48 restricts the movement of the cap 10 and the band portion 50 with respect to the spout 40.
- a user such as a consumer rotates the cap 10 relative to the spout 40 in order to remove the cap 10 from the spout 40 when the contents are poured out from the unopened packaging container 1.
- the screwing between the internal screw 15 of the peripheral wall 14 and the external screw 43 of the side wall 42 is gradually released, and the cap 10 and the band portion 50 are the flange 44 (ring portion) of the spout 40. Gradually move away from 46).
- the hook portion 54 of the band portion 50 comes into contact with the protrusion 48.
- tensile stress is generated between the base portion 28 of the cap 10 and the band portion 50 (thin-walled portion 82), and the cap 10 and the band portion 50 are restricted from being separated from the flange 44 of the spout 40.
- the thin portion 82 is broken. Due to the breakage of the thin portion 82, the restriction on the movement of the cap 10 is lifted.
- each of the plurality of ribs 70 is formed to such an extent that it breaks when the tensile stress reaches a predetermined value.
- the cap 10 and the band portion 50 are physically separated (separated).
- the band portion 50 separated from the cap 10 moves downward to a position where it comes into contact with the ring portion 46 of the spout 40.
- the above-mentioned notch 80 is located above the facing surface 48a (upper end of the facing surface 48a) of the protrusion 48.
- the height of the notch 80 is higher than the height of the upper end of the facing surface 48a with respect to the lower end of the flange 44. In this case, the distance along the vertical direction between the notch 80 and the top plate 12 is smaller than the distance along the vertical direction between the facing surface 48a of the protrusion 48 and the top plate 12.
- the distance d between the lower end of the band portion 50 and the notch 80 may be 6.0 mm or less.
- the distance d may be 5.5 mm or less, 5.0 mm or less, or 4.5 mm or less from the viewpoint of ensuring the size of the cap 10 or the size of the gap g.
- the distance d is 3.0 mm or more, 3.5 mm or more, or 4.0 mm or more from the viewpoint of more reliably fixing the cap 10 to the spout 40 or from the viewpoint of ease of forming the hook portion 54. May be good.
- the distance d may be 3.0 mm to 6.0 mm or 3.5 mm to 5.5 mm.
- the distance d is defined as the shortest distance between the lower end of the band portion 50 and the notch 80.
- the thickness h of the rib 70 may be 0.4 mm to 0.6 mm.
- the thickness h corresponds to the shortest distance between the inner peripheral surface on which the rib 70 is formed and the surface of the rib 70 facing the central axis Ax.
- the thickness h may be 0.42 mm or more, 0.44 mm or more, 0.46 mm or more, or 0.48 mm or more.
- the thickness h may be 0.58 mm or less, 0.56 mm or less, 0.54 mm or less, or 0.52 mm or less. In one example, the thickness h may be 0.42 mm to 0.58 mm or 0.44 mm to 0.56 mm.
- FIG. 7 shows a plan view of the cap 10.
- the knurl 20 may be composed of six protrusions 22 and six bases 24. That is, six sets of protrusions 22 and base 24 may be formed on the outer peripheral surface of the peripheral wall 14.
- the ridgeline of the protrusion 22 (the outer edge of the protrusion 22 in a plan view) has a saw-like shape. That is, the protrusion 22 is a saw-shaped protrusion.
- the ridgeline of the protrusion 22 is not axisymmetric with respect to the virtual line segment L1 passing through its top 22a and the central axis Ax. In this case, the lengths of the two ridges divided by the line segment L1 of the ridges of the protrusion 22 are different from each other. Therefore, when the consumer grips the cap 10 with his / her finger and rotates the cap 10, the way the finger is applied and the feel of the cap 10 differ depending on the direction of the rotation.
- the internal screw 15 of the cap 10 can be removed from the spout 40 when the cap 10 is rotated in the direction of the arrow OP (counterclockwise) shown in FIG. And the external screw 43 of the spout 40 are formed.
- the removed cap 10 is fitted into the spout 40, and when the cap 10 is rotated in the direction of the arrow CL (clockwise), the internal screw 15 and the external screw 43 are screwed into the cap. 10 is attached to the spout 40.
- the top portion 22a of the protrusion 22 is closer to the base portion 24 adjacent to the upstream side than the base portion 24 adjacent to the downstream side.
- the top portion 22a of the protrusion 22 is a base 24 provided on the upstream side of the protrusion 22 with respect to the base 24 provided on the downstream side of the protrusion 22 in the circumferential direction around the central axis Ax. Located nearby.
- the protrusion 22 protrudes outward from a virtual circle (hereinafter referred to as a “virtual circle”) that passes through the boundary between the protrusion 22 and the base 24 that are adjacent to each other. More specifically, most of the protrusions 22 including the top 22a are located outside the virtual circle.
- the center of the virtual circle substantially coincides with the central axis Ax, and the virtual circle is the boundary between the protrusion 22 and the base 24 (the point where the ridge of the protrusion 22 and the ridge of the base 24 are connected to each other in a plan view). ) All through.
- the base 24 (ridge line of the base 24) is located inside the virtual circle.
- the ridge line of the base 24 may be a linear line segment connecting the above-mentioned boundaries adjacent to each other in the circumferential direction around the central axis Ax.
- the ridgeline of the base 24 may be a curved line connecting adjacent boundaries to each other and protruding (recessing) inward.
- the outer peripheral surface formed by the base 24 is a flat surface.
- the outer peripheral surface formed by the base portion 24 is a curved surface whose central portion curves toward the central axis Ax.
- the manufacturing method of the spout 4 is at least a step of preparing a spout 40, a step of preparing a cap member, a step of screwing an internal screw 15 into an external screw 43, and a step of attaching a cap member to the spout 40, and a cap. It includes a step of forming a notch 80 with the member attached to the spout.
- a step of fixing the cap member to the spout 40 is performed.
- a portion corresponding to the cap 10 a portion corresponding to the band portion 50, a cap member in which a plurality of ribs 70 are integrated, and a spout 40 are prepared.
- the cap member has the same shape as the cap 10, the band portion 50, and the rib 70, except that the thin-walled portion 82 is not formed (the notch 80 is not formed). Therefore, the names of the constituent members of the cap 10 and the band portion 50 will be described below.
- the peripheral wall of the cap member corresponds to the peripheral wall 14 of the cap 10 and the main body 52 of the band portion 50 before being separated from each other.
- the upper end of the side wall 42 of the spout 40 is inserted inside the peripheral wall of the cap member.
- the cap member is rotated with respect to the spout 40 in the CL direction of FIG. 6, the internal screw 15 and the external screw 43 are screwed together, and the cap member moves in a direction approaching the flange 44 of the spout 40.
- the plurality of hook portions 54 come into contact with the protrusions 48 (inclined surfaces located above the protrusions 48), they start riding on the protrusions 48.
- the upper end portion of the side wall 42 of the spout 40 begins to be inserted between the peripheral wall of the cap member and the inner ring 16.
- each hook portion 54 gets over the protrusion 48, and the upper end portion of the side wall 42 of the spout 40 is inserted between the peripheral wall of the cap member and the inner ring 16. It will be in a state of being.
- the spout 40 is in a state of being capped by the cap member (a state in which the cap member is attached to the spout 40).
- a step of forming a notch 80 (thin wall portion 82) in the cap member is performed.
- a score cutter is used to make a notch on the entire circumference of the peripheral wall 14 of the cap member to form the notch 80.
- the blade of the score cutter is applied from the outer periphery of the peripheral wall 14 to the portion that will later become the boundary between the base portion 28 and the band portion 50 of the peripheral wall 14 and the position corresponding to the boundary portion of each rib 70. In each rib 70, the blade of the score cutter is inserted up to the substantially central portion of the rib 70.
- the cap member and the spout 40 are rotated around the central axis Ax to form the notch 80.
- the thin portion 82 is formed on the rib 70.
- the notch 80 is formed with the cap member and the spout 40 fixed to each other.
- the cap member is divided into a cap 10 and a band portion 50, and a spout 4 is obtained.
- the size and thickness of the thin portion 82 can be changed to adjust the force required for breaking. Then, a step of attaching the spout 4 to the container body 2 is performed, and the packaging container 1 is manufactured.
- FIG. 8 shows the spout 4A according to the first modification.
- the spout 4A differs from the spout 4 in that it has a band 140 in place of the band 50 and the spout 40 has a protrusion 138 in place of the protrusion 48.
- the protrusion 138 is formed in the same manner as the protrusion 48.
- the protrusion 138 is formed on the outer peripheral surface of the side wall 42, and is formed so as to project outward from the side wall 42.
- the protrusion 138 is formed in an annular shape, and is continuously provided on the outer peripheral surface of the side wall 42 along the circumferential direction around the central axis Ax.
- the protrusion 138 is located below the external screw 33 and is provided in the central portion in the vertical direction of the side wall 42.
- the protrusion 138 has a function of restricting the movement of the band portion 140.
- FIG. 9 shows a bottom view when the band portion 140 is viewed from below along the central axis Ax, and some elements of the cap 10 and the spout 40 are not shown.
- the left half of FIG. 8 shows the cross section at line VIIIA in FIG. 9, and the right half of FIG. 8 shows the cross section at line VIIIB in FIG.
- the band portion 140 has a main body 52, a plurality of hook portions 142, and a plurality of thin-walled portions 148.
- the hook portion 142 has the same function as the hook portion 54.
- the hook portion 142 is connected to the lower end portion of the main body 52, and extends from the lower end portion toward the top plate 12 of the cap 10.
- the hook portion 142 is inclined with respect to the central axis Ax and the plane orthogonal to the central axis Ax (XY plane in the figure).
- the hook portion 142 is formed so that the distance between the central axis Ax and the hook portion 142 decreases as it approaches the top plate 12.
- the plurality of hook portions 142 have a function of restricting the cap 10 from being relatively separated from the spout 40. At least a part of the tip 142a (upper end surface) of the hook portion 142 faces the lower surface 138a of the protrusion 138 of the spout 40. When the cap 10 is to be removed, the hook portions 142 come into contact with the lower surface 138a of the protrusion 138, so that the cap 10 is restricted from being separated from the spout 40.
- the hook portion 142 may be arranged so as to face the lower surface 138a of the protrusion 138 in a state of being separated from the spout 40.
- the hook portion 142 may be formed so as not to come into contact with the side wall 42 and the protrusion 138 at any of the hook portions 142.
- the tip 142a (upper end surface) of the hook portion 142 may be separated from the spout 40.
- the tip 142a of the hook portion 142 is separated from the spout 40, the tip 142a of the hook portion 142 is not in contact with the side wall 42 and the protrusion 138 of the spout 40.
- the tip 142a of the hook portion 142 may not be in contact with the inner peripheral surface of the main body 52 in addition to the spout 40 (it may be separated from the inner peripheral surface of the main body 52).
- Each hook portion 142 is connected to the lower end portion of the main body 52, is connected to the base end portion 143 curved downward, and is connected to the base end portion 143, and is formed to extend toward the top plate 12. And include. Since the base end portion 143 is curved downward, the base end portion 143 has a shape that is convex downward. The tip of the inclined portion 144 (the end face on the side opposite to the end face connected to the base end portion 143) corresponds to the tip 142a of the hook portion 142.
- the plurality of hook portions 142 are arranged along the circumferential direction around the central axis Ax.
- the plurality of hook portions 142 are arranged at intervals in the circumferential direction around the central axis Ax (provided at predetermined intervals).
- the number of the plurality of hook portions 142 may be eight. Unlike the example shown in FIG. 9, the number of the plurality of hook portions 142 may be 9 to 12. When the number of the plurality of hook portions 142 is 8 or more, the hook portions 142 are caught on the protrusions 138, and a force for breaking the broken portions 60 is likely to be generated when the cap 10 is removed.
- Each hook portion 142 is formed in a plate shape so as to extend along the circumferential direction around the central axis Ax.
- the plurality of hook portions 142 may have the same shape as each other.
- Each of the plurality of thin-walled portions 148 connects the hook portions 142 adjacent to each other in the circumferential direction around the central axis Ax among the plurality of hook portions 142.
- One hook portion 142 and one thin-walled portion 148 are alternately arranged in the circumferential direction around the central axis Ax.
- One thin-walled portion 148 connects (connects) a pair of hook portions 142 that sandwich themselves in the circumferential direction around the central axis Ax.
- the thin-walled portion 148 is formed in a plate shape so as to extend along the circumferential direction around the central axis Ax.
- the plurality of thin-walled portions 148 may have the same shape as each other.
- the thickness Th2 of the plurality of thin-walled portions 148 is smaller than the thickness Th1 of the plurality of hook portions 142 (see also FIGS. 11 (a) and 11 (b)).
- the thickness Th2 of the plurality of thin-walled portions 148 may be substantially the same as each other, and the thickness Th1 of the plurality of hook portions 142 may be substantially the same as each other.
- the ratio of the thickness Th1 of the hook portion 142 to the thickness Th2 of the thin portion 148 is 5.0 or less, 4.5 or less, 4.0 or less, or 3.5 from the viewpoint of suppressing the restoring force of the hook portion 142. It may be as follows.
- the ratio of the thickness Th1 of the hook portion 142 to the thickness Th2 of the thin wall portion 148 is 1.5 or more, 2.0 or more, 2.5 or more, or 3.0 from the viewpoint of ease of processing of the hook portion 142. It may be the above.
- the ratio of the thickness Th1 of the hook portion 142 to the thickness Th2 of the thin-walled portion 148 may be 1.5 to 5.0 or 2.0 to 4.5.
- the thickness Th2 of the thin portion 148 may be 0.15 mm or more, 0.18 mm or more, 0.20 mm or more, or 0.22 mm or more from the viewpoint of suppressing the restoring force of the hook portion 142.
- the thickness Th2 of the thin portion 148 may be 0.35 mm or less, 0.32 mm or less, 0.30 mm or less, or 0.28 mm or less from the viewpoint of ease of processing of the hook portion 142.
- the thickness Th2 of the thin portion 148 may be 0.15 mm to 0.35 mm or 0.22 mm to 0.28 mm.
- the thickness Th2 of the thin-walled portion 148 may be measured at the tip of the thin-walled portion 148 (the tip surface located on the opposite side of the main body 52).
- the thickness Th1 of the hook portion 142 may be 0.60 mm or more, 0.62 mm or more, 0.64 mm or more, or 0.65 mm or more from the viewpoint of exerting the function of the hook portion 142.
- the thickness Th1 of the hook portion 142 may be 0.80 mm or less, 0.78 mm or less, 0.76 mm or less, or 0.75 mm or less from the viewpoint of ease of processing of the hook portion 142.
- the thickness Th1 of the hook portion 142 may be 0.6 mm to 0.8 mm or 0.65 mm to 0.75 mm.
- the thickness Th1 of the hook portion 142 may be measured at the tip of the hook portion 142 (the tip surface located on the opposite side of the main body 52).
- Each of the plurality of hook portions 142 may be formed so that the width decreases toward the lower end portion of the main body 52 from the tip end (end portion close to the central axis Ax). In this case, it is easy to bend the hook portion 142 at the base of the hook portion 142 while maintaining the range in which the hook portion 142 abuts on the protrusion 138 when the cap 10 is removed. As shown in FIG. 9, when viewed from below along the central axis Ax, the width of the hook portion 142 along the circumferential direction around the central axis Ax decreases from the inside to the outside.
- the length of the line segment connecting both ends of the inner peripheral edge 147a of the hook portion 142 is smaller than the length of the line segment connecting both ends of the outer peripheral edge 147b of the hook portion 142.
- the length of the line segment connecting both ends of the outer peripheral edge 147b may be 1/5 to 4/5 times the length of the line segment connecting both ends of the inner peripheral edge 147a.
- the distance between the pair of side edges 147c connecting the inner peripheral edge 147a and the outer peripheral edge 147b decreases as the distance from the central axis Ax increases.
- the thin-walled portion 148 does not have to be connected to the tip (inner peripheral edge 147a) of the hook portion 142.
- the amount of protrusion y1 from the inner peripheral surface of the main body 52 of the hook portion 142 is larger than the amount of protrusion y2 from the inner peripheral surface of the main body 52 of the thin-walled portion 148.
- the protrusion amount y2 may be 0.7 times to 0.95 times the protrusion amount y1.
- FIG. 10 shows an enlarged cross-sectional view of the area surrounded by X-rays in FIG. 8 and 10 show a vertical cross section when the spout 4 is cut on a surface including the central axis Ax and passing through any of the hook portions 142.
- a vertical cross section including the central axis Ax and passing through the hook portion 142 is referred to as an “observation cross section”.
- the observation cross section may be set to include the central axis Ax and to pass through the center of the circumference around the central axis Ax of the hook portion 142.
- the direction orthogonal to the central axis Ax is defined as "horizontal direction".
- the observation cross section corresponds to the XX plane
- the lateral direction corresponds to the X-axis direction.
- the lateral distance d1 between the hook portion 142 and the spout 40 is 0.30 mm or more, 0.35 mm or more, 0. It may be 40 mm or more, or 0.45 mm or more.
- the distance d1 may be 0.70 mm or less, 0.65 mm or less, 0.60 mm or less, or 0.55 mm or less from the viewpoint of exerting the function of the hook portion 142.
- the distance d1 may be 0.3 mm to 0.7 mm or 0.45 mm to 0.55 mm.
- the distance d1 is defined as the shortest lateral distance between the hook portion 142 and the spout 40. In the example shown in FIG. 10, the distance d1 corresponds to the shortest lateral distance between the tip 142a of the hook portion 142 and the spout 40.
- the lateral distance d2 between the point A located on the outermost side of the protrusion 138 and the point B located on the innermost side of the hook portion 142 is 0 from the viewpoint of exerting the function of the hook portion 142. It may be .50 mm or more, 0.55 mm or more, 0.60 mm or more, or 0.65 mm or more.
- the lateral distance d2 between the points A and B is 0.9 mm or less, 0.85 mm or less, 0.80 mm or less, or 0.80 mm or less from the viewpoint of more reliably avoiding contact between the hook portion 142 and the spout 40. It may be 0.75 mm or less.
- the distance d2 may be 0.5 mm to 0.9 mm or 0.65 mm to 0.75 mm.
- the minimum value of the inclination angle with respect to the lateral direction of the side surface of the inclined portion 144 facing the central axis Ax (the portion corresponding to the inclined portion 144 of the side surface 145 of the hook portion 142) is the hook portion 142 and the spout.
- the temperature may be 50 ° or more, 55 ° or more, 60 ° or more, or 65 ° or more.
- the minimum value of the inclination angle may be 85 ° or less from the viewpoint of exerting the function of the hook portion 142.
- the maximum value of the inclination angle may be 85 ° or less.
- the plurality of inclined angles (the smallest angle among the plurality of inclined angles) is 50 ° or more, or 50 ° to 85 °. May be good.
- a plurality of tilt angles are indicated by “ ⁇ 1” and “ ⁇ 2”, and the tilt angle ⁇ 2 is smaller than the tilt angle ⁇ 1.
- the inclination angle ⁇ 2 may be 50 ° or more.
- the portion of the side wall 42 of the spout 40 located above the protrusion 138 is defined as the "upper portion 42a", and the portion located below the protrusion 138 is defined as the "lower portion 42b”. ..
- the protrusion 138 extends along the central axis Ax and forms a side surface 137a facing the inner peripheral surface of the main body 52, and an inclination extending from the upper end of the side surface 137a of the protrusion 139a to the upper portion 42a. It may include an inclined portion 139b forming the surface 137b.
- the upper portion 42a of the side wall 42 is located above the upper end of the inclined portion 139b, and the lower portion 42b of the side wall 42 is located below the lower end of the protruding portion 139a.
- the notch 80 is located above the upper end of the protruding portion 139a (side surface 137a) forming the side surface 137a of the protrusion 138.
- the width wb along the lateral direction of the lower portion 42b is 1.40 mm or less, 1.35 mm or less, 1.30 mm or less, from the viewpoint of more reliably avoiding contact between the hook portion 142 and the spout 40. Alternatively, it may be 1.25 mm or less.
- the width wb may be 1.0 mm or more, 1.05 mm or more, 1.10 mm or more, or 1.15 mm or more from the viewpoint of the strength of the spout 40.
- the width wb may be 1.0 mm to 1.4 mm or 1.15 mm to 1.25 mm.
- the width wb may be smaller than the width wa of the upper portion 42a.
- the width wb may be 0.5 to 0.8 times the width wa.
- the lateral distance xb (shortest lateral distance) between the lower portion 42b and the outermost point A of the protrusion 138 is the lateral direction between the upper portion 42a and the point A. It may be larger than the distance xa (the shortest distance in the horizontal direction) in. In this case, the possibility of contact between the hook portion 142 and the spout 40 can be reduced. Even if the ratio of the distance xb to the distance xa is 1.5 or more, 1.6 or more, 1.7 or more, or 1.8 or more from the viewpoint of more reliably avoiding contact between the hook portion 142 and the spout 40. good. The ratio of the distance xb to the distance xa may be 3.0 or less from the viewpoint of ease of manufacturing the spout 40.
- the lateral distance xb between the lower portion 42b and the point A is 1.00 mm or more, 1.05 mm or more, and 1.10 mm or more from the viewpoint of more reliably avoiding contact between the hook portion 142 and the spout 40. , Or 1.15 mm or more.
- the distance xb may be 1.40 mm or less, 1.35 mm or less, 1.30 mm or less, or 1.25 mm or less from the viewpoint of the strength of the spout 40.
- the distance xb may be 1.0 mm to 1.4 mm or 1.15 mm to 1.25 mm.
- the distance xa in the width direction between the upper portion 42a and the point A may be 0.4 mm to 0.8 mm.
- FIG. 11A schematically shows an example of the state when the hook portion 142 is formed.
- FIG. 11B schematically shows an example of a cross section of the thin-walled portion 148.
- the cap 10 and the band portion 140 are manufactured by resin molding in an integrated state.
- the hook portion 142 (the plurality of hook portions 142 and the plurality of thin-walled portions 148) is the internal space formed by the cap 10 and the band portion 140. It protrudes to the outside.
- the hook portion 142 and the thin-walled portion 148 are formed by bending the hook portion 142 and the thin-walled portion 148 in a protruding state toward the internal space with a jig or the like.
- the base end portion 143 and the inclined portion 144 are formed.
- the base end portion 143 in a curved state is formed, and a restoring force (restoring force to fall toward the central axis Ax) to return to the original position may be generated in the hook portion 142.
- the upper surface 143a of the base end portion 143 is curved so as to be recessed downward.
- the radius of curvature of the upper surface 143a may be 0.75 mm or less, 0.72 mm or less, 0.70 mm or less, or 0.68 mm or less from the viewpoint of reducing the restoring force in the inclined portion 144.
- the radius of curvature of the upper surface 143a may be 0.55 mm or more, 0.57 mm or more, 0.60 mm or more, or 0.62 mm or more from the viewpoint of exerting the function of the hook portion 142.
- the radius of curvature of the upper surface 143a may be 0.55 mm to 0.75 mm.
- the spout 4A is manufactured in the same manner as the spout 4.
- the plurality of hook portions 142 and the plurality of thin-walled portions 148 project out of the internal space of the cap member.
- the plurality of hook portions 142 and the plurality of thin-walled portions 148 in a state of being connected to each other are bent (folded) into the internal space of the cap member by a jig or the like.
- the base end portion 143 and the inclined portion 144 are formed on the hook portion 142.
- the hook portion 142 is folded into the internal space of the cap member until the tip 142 a of the hook portion 142 does not come into contact with the inner peripheral surfaces of the spout 30 and the main body 52.
- the spout 40 may have a protrusion 138A instead of the protrusion 138, as shown in FIG.
- the protrusion 138A differs from the protrusion 138 in that it includes an inclined portion 139c in addition to the protruding portion 139a and the inclined portion 139b.
- the inclined portion 139c is a portion forming an inclined surface 137c extending toward the side wall 42 in a state of being inclined from the lower surface of the protruding portion 139a.
- the inclined surface 137c of the inclined portion 139c may extend from the lower surface of the protruding portion 139a to the side wall 42.
- the point C where the inclined surface 137c of the inclined portion 139c and the lower surface of the protruding portion 139a intersect is larger than the side surface 137a of the protruding portion 139a (the outermost point A of the protrusion 138A). It is located inside.
- the protrusion 138A includes the inclined surface 137c, even if the hook portion 142 falls toward the spout 40 due to the restoring force, the tip 142a of the hook portion 142 can come into contact with the inclined surface 137c.
- the contact with the inclined surface 137c makes the hook portion 142 slippery, so that the band portion 140 can smoothly fall. Therefore, the possibility that the band portion 140 stays in the original position can be reduced.
- the lower portion 42b of the side wall 42 is located below the lower end of the inclined portion 139c.
- the point D may be lower than the tip 142a of the hook portion 142.
- the shortest lateral distance between the hook portion 142 (tip 142a of the hook portion 142) and the spout 30 orthogonal to the central axis Ax is the lateral direction between the tip 142a and the inclined portion 139c. It is defined by the shortest distance in.
- the lateral distance xc between the outer peripheral surface of the lower portion 42b and the point C is between the outer peripheral surface of the lower portion 42b and the point A from the viewpoint of exerting the function of the hook portion 142. It may be 55% or less, 50% or less, 45% or less, or 40% or less of the lateral distance xb.
- the distance xc may be 0.6 mm or less, 0.55 mm or less, 0.50 mm or less, or 0.45 mm or less from the viewpoint of exerting the function of the hook portion 142.
- the corner of the tip 142a of the hook portion 142 near the side wall 42 may have a rounded shape.
- the radius of curvature of the angle 144R formed by the tip 142a and the side surface 145 facing the central axis Ax of the hook portion 142 slides on the hook portion 142 when the hook portion 142 comes into contact with the side wall 42 of the spout 30. From the viewpoint of facilitation, it may be 0.30 mm or more, 0.32 mm or more, 0.34 mm or more, or 0.35 mm or more.
- the radius of curvature of the angle 144R may be 0.6 mm or less.
- the spout 4A may have a band portion 140A instead of the band portion 140.
- the band portion 140A differs from the band portion 140 in that it has a plurality of hook portions 142A instead of the plurality of hook portions 142 and the plurality of thin-walled portions 148. Similar to the hook portion 142, the plurality of hook portions 142A have a function of restricting the cap 10 from being relatively separated from the spout 40.
- Each hook portion 142A includes a base end portion 143 and an inclined portion 144.
- FIG. 13 shows a bottom view when the band portion 140A is viewed from below along the central axis Ax.
- the cross section in XX line of FIG. 13 corresponds to the cross section in FIG. 10 or FIG.
- the shape and various dimensions of the hook portion 142A are the same as the shape and various dimensions of the hook portion 142 in the vertical cross section (the above-mentioned observation cross section) including the central axis Ax and passing through the center in the circumferential direction of any of the hook portions 142A. May be.
- the relationship between the hook portion 142A and the surrounding members may be the same as the relationship between the hook portion 142 and the surrounding members.
- the plurality of hook portions 142A are provided at predetermined intervals along the circumferential direction around the central axis Ax.
- the number of the plurality of hook portions 142A may be eight. Unlike the example shown in FIG. 13, the number of the plurality of hook portions 142A may be 9 to 12.
- Each hook portion 142A is formed in a plate shape so as to extend along the circumferential direction around the central axis Ax. When viewed from the direction along the central axis Ax, none of the hook portions 142A is formed in the region (range on the circumference) in which the plurality of hook portions 142A are formed in the inner peripheral surface of the main body 52. It may be larger than the area (range on the circumference). When viewed from the direction along the central axis Ax, the region of the inner peripheral surface of the main body 52 in which the plurality of hook portions 142A are formed is 3 to 6 times the region in which none of the hook portions 142A is formed. May be.
- the side surface 145 of the hook portion 142A facing the central axis Ax includes a tip edge 145a, a pair of side edges 145b, and a pair of connecting edges 145c.
- the tip edge 145a is curved so as to extend along the circumference around the central axis Ax.
- the tip edge 145a is located inside the inner peripheral edge of the main body 52 when viewed from the direction (downward) along the central axis Ax.
- the pair of side edges 145b extend so as to intersect the main body 52, and are connected to the inner peripheral edge of the main body 52 when viewed from the direction (downward) along the central axis Ax.
- Each of the pair of connecting edges 145c connects the end of the tip edge 145a and the end of the side edge 145b.
- the connecting edge 145c extends so as to intersect both the tip edge 145a and the side edge 145b.
- the connecting edge 145c may be linear or curved (may be curved).
- the connection edge 145c is located between the intersection CP and the main body 52.
- the intersection CP is an intersection of the virtual line IL1 extending on the circumference around the central axis Ax along the tip edge 145a and the virtual line IL2 extending along the side edge 145b.
- a pair of connecting edges 145c are located in the inner peripheral surface of the main body 52, the area partitioned by the virtual line IL1 and the virtual line IL2 when viewed from the direction (downward) along the central axis Ax. As described above, notches are formed in each of the pair of corners of the side surface 145 near the central axis Ax.
- the radius of curvature of the angular RP formed by the tip edge 145a and the connecting edge 145c is 0.30 mm or more, 0, from the viewpoint of making the hook portion 142A slippery when the hook portion 142A comes into contact with the side wall 42 of the spout 40. It may be .32 mm or more, 0.34 mm or more, or 0.35 mm or more.
- the radius of curvature of the angular RP may be 0.55 mm or less, 0.50 mm or less, 0.47 mm or less, or 0.45 mm or less from the viewpoint of ease of manufacturing the band portion 140A.
- the radius of curvature of the angular RP may be 0.30 mm to 0.55 mm or 0.35 mm to 0.45 mm.
- the shape of the packaging container 1 is not limited to the shape shown in FIG. 1, and may have a cylindrical shape.
- the attachment position of the spout 4 with respect to the container body 2 is not limited to the position shown in FIG. 1, and may be any position.
- the knurl 20 is composed of 6 protrusions 22 and 6 bases 24, but the number of protrusions 22 and the number of bases 24 may be 2 or more, respectively.
- the knurl 20 may be composed of 12 protrusions 22 and 12 bases 24.
- a mountain-shaped protrusion having a top portion lower than the height of the top portion 22a of the protrusion 22 may be provided.
- the knurl 20 may be configured in any way as long as it has a plurality of protrusions protruding outward and a portion located inside the protrusions.
- any two or more examples of the above embodiments and modifications may be applied to each other.
- the protrusion 138A of the modification 2 may be applied to the spout 4A according to the modification 3.
- Some matters in any one of the above embodiments and modifications may be applied to any of the other examples.
- the spouts 4 and 4A include a spout 40, a cap 10, band portions 50, 140, 140A, and a rib 70.
- the spout 40 has a cylindrical side wall 42, an external screw 43 provided on the outer peripheral surface of the side wall 42, and a flange 44 provided on one end side of the side wall 42.
- the cap 10 has a top plate 12, a peripheral wall 14 connected to the outer peripheral edge of the top plate 12, and an internal screw 15 provided on the inner peripheral surface of the peripheral wall 14 and screwed with the external screw 43.
- the band portions 50, 140, 140A are connected to one end of the peripheral wall 14, and the cap 10 is fixed to the spout 40 between the peripheral wall 14 and the spout 40.
- the rib 70 connects the peripheral wall 14 and the band portions 50, 140, 140A, and protrudes inward from the inner peripheral surface of the end portion of the peripheral wall 14 and the inner peripheral surface of the band portions 50, 140, 140A toward the inside of the cap 10. do.
- the spout 40 is provided on the side wall 42 and further has protrusions 48, 138, 138A that restrict the movement of the cap 10 and the band portions 50, 140, 140A with respect to the spout 40.
- the band portions 50, 140, 140A and the peripheral wall 14 are separated by a notch 80 located above the portion of the protrusions 48, 138, 138A facing the peripheral wall 14, and the notch 80 extends to the inside of the rib. It is extended.
- the notch when the notch is formed below the facing surface 48a of the protrusion 48 (the side surface 137a of the protrusions 138 and 138A), when the notch is formed, when a blade such as a cutter is applied, the peripheral wall and the band portion are inward. It bends. In this case, the formation of the notch is not stable (for example, the size and the like vary from individual to individual), which may affect the quality of the band portion.
- the notch 80 formed at the boundary between the band portions 50, 140 and 140A and the peripheral wall 14 and the rib 70 faces the peripheral wall 14 of the protrusions 48, 138 and 138A.
- the notch 80 is formed by using the blade of a cutter or the like (for example, a score cutter), the rib 70 comes into contact with the protrusions 48, 138, 138A, so that the peripheral wall 14 and the band portions 50, 140, 140A are formed. It can suppress bending inward. Therefore, the notch 80 can be stably formed. Therefore, the spouts 4, 4A are useful for stabilizing the quality of the band portions 50, 140, 140A.
- the thickness of the rib 70 may be 0.4 mm to 0.6 mm. If the rib 70 is thin, the spout 40 may be scratched when the notch 80 is formed. In this configuration, since the rib 70 has the above-mentioned thickness, it is easy to form a notch in a part of the rib 70 to obtain a thin portion 82.
- the band portions 50, 140, 140A may be connected to one end of the peripheral wall 14 of the cap 10 so that the band portions 50, 140, 140A and the cap 10 are separated when the cap 10 is removed from the spout 40. ..
- a gap g may be provided between the lower end of the band portions 50, 140, 140A and the portion of the flange 44 facing the lower end of the band portion 50.
- the width of the gap g may be 0.5 mm or more.
- the band portions 50, 140, 140A are once separated from the cap 10, and when the cap 10 is reattached to the spout 40, a gap g1 is formed between the band portions 50, 140, 140A and the cap 10. ..
- the width of the gap g1 can also be about 0.5 mm or more, it is useful for improving the visibility of the gap g1 after opening. Further, by providing the gap g, the degree of bending of the peripheral wall and the band portion when forming the notch may be larger than in the case where the gap g is not formed. However, in this configuration, the rib 70 is a protrusion 48. By abutting on (opposing surface 48a) or protrusions 138 and 138A (side surface 137a), the formation of a notch becomes easy.
- the distance between the lower ends of the band portions 50, 140, 140A and the notch 80 may be 6.0 mm or less. In this case, it is easy to secure the size of the cap 10 or the gap g. For example, it is possible to sufficiently secure a region forming the knurl 20 formed for improving operability at the time of opening.
- the band portions 50, 140, 140A have a cylindrical main body 52 provided with the rib 70, and hook portions 54, 142, 142A inclined from the lower end portion of the main body 52 toward the top plate 12. good.
- the hook portions 54, 142, 142A may be restricted from separating the cap 10 with respect to the spout 40 by abutting on the protrusions 48, 138, 138A. In this case, it is possible to prevent the cap 10 from being unintentionally opened.
- the hook portions 142 and 142A may be arranged so as to face the lower surface 138a of the protrusions 138 and 138A in a state of being separated from the spout 40.
- a restoring force that tends to cause the hook portions 142 and 142A to fall toward the spout 40 may be generated.
- sandwiching the spout 40 in a state where the hook portions 142 and 142A are in contact with the spout 40 due to the restoring force when the cap 10 is removed, the band portions 140 and 140A remain in their original positions and do not fall down. there is a possibility.
- the hook portions 142 and 142A are arranged so as to face the lower surface of the protrusions 138 and 138A in a state of being separated from the spout 40, so that the hook portion comes into contact with the spout when the cap is removed. hard.
- the separated band portions 140 and 140A can smoothly fall. Therefore, it is useful for stabilizing the quality of the band portions 140 and 140A.
- the plurality of hook portions 142 may be arranged at intervals from each other along the circumferential direction around the central axis Ax of the cap 10.
- the band portion 140 may connect the hook portions 142 adjacent to each other among the plurality of hook portions 142, and may have a plurality of thin-walled portions 148 having a thickness smaller than that of the plurality of hook portions 142. Even if any of the hook portions 142A tries to fall toward the central axis Ax due to the restoring force, since they are connected by a plurality of thin-walled portions 148, the movement to fall is restricted. Therefore, it is possible to reduce the possibility that the hook portion 142A falls toward the central axis Ax and comes into contact with the spout 40. Therefore, it is useful for stabilizing the quality of the band portion 140.
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Abstract
Description
図1には、一実施形態に係る包装容器の斜視図が示されている。包装容器1は、内容物を収容する容器である。包装容器1に収容される内容物は、液体状のものであってもよく、その具体例としては、酒類、飲料、及び調味料等が挙げられる。包装容器1は、容器本体2と、口栓4と、を備える。容器本体2は、液体等の内容物を収容する本体部分である。容器本体2の材質としては、紙、樹脂及びガラスが挙げられる。容器本体2の材質は、紙と樹脂とがラミネートされたものであってもよい。容器本体2には、口栓4が取り付けられている。
口栓4は、包装容器1(容器本体2)から内容物を注出するための注出口を形成する部材である。図2には口栓4の側面図が示されており、図3には、図2に示される口栓4の縦断面が示されている。図2及び図3に示されるように、口栓4は、キャップ10と、スパウト40と、バンド部50と、を備える。キャップ10は、スパウト40に固定されている(取り付けられている)。
続いて、口栓4の製造方法の一例を以下に説明する。口栓4の製造方法は、少なくとも、スパウト40を準備する工程と、キャップ部材を準備する工程と、外ネジ43に内ネジ15を螺合させて、スパウト40にキャップ部材を取り付ける工程と、キャップ部材をスパウトに取り付けた状態で、切込み80を形成する工程と、を含む。
図8には、変形例1に係る口栓4Aが示されている。口栓4Aは、バンド部50に代えてバンド部140を有する点、及びスパウト40が突起48に代えて突起138を有する点において、口栓4と相違する。
口栓4Aにおいて、スパウト40が、図12に示されるように、突起138に代えて、突起138Aを有してもよい。突起138Aは、突出部分139a及び傾斜部分139bに加えて、傾斜部分139cを含む点で突起138と相違する。傾斜部分139cは、突出部分139aの下面から傾斜した状態で側壁42に向かって延びる傾斜面137cを形成する部分である。傾斜部分139cの傾斜面137cは、突出部分139aの下面から側壁42まで延びていてもよい。中心軸Axを含む上記観察断面において、傾斜部分139cの傾斜面137cと突出部分139aの下面とが交わる点Cは、突出部分139aの側面137a(突起138Aの最も外側に位置する点A)よりも内側に位置している。
口栓4Aは、バンド部140に代えてバンド部140Aを有してもよい。バンド部140Aは、複数のフック部142及び複数の薄肉部148に代えて、複数のフック部142Aを有する点で、バンド部140と相違する。複数のフック部142Aは、フック部142と同様に、キャップ10がスパウト40から相対的に離れることを規制する機能を有する。各フック部142Aは、基端部143と、傾斜部144とを含む。図13には、中心軸Axに沿って下からバンド部140Aを見た場合の下面図が示されている。
包装容器1(容器本体2)の形状は、図1に示されるような形状に限定されず、円柱形状を有してもよい。容器本体2に対する口栓4の取り付け位置も、図1に示される位置に限定されず、いずれの位置であってもよい。
以上の実施形態に係る口栓4,4Aは、スパウト40と、キャップ10と、バンド部50,140,140Aと、リブ70と、を備える。スパウト40は、円筒状の側壁42と、側壁42の外周面に設けられた外ネジ43と、側壁42の一端側に設けられたフランジ44と、を有する。キャップ10は、天板12と、天板12の外周縁に接続された周壁14と、周壁14の内周面に設けられ、外ネジ43と螺合する内ネジ15と、を有する。バンド部50,140,140Aは、周壁14の一端に接続され、周壁14とスパウト40との間においてキャップ10をスパウト40に固定する。リブ70は、周壁14とバンド部50,140,140Aとを接続し、周壁14の端部の内周面とバンド部50,140,140Aの内周面とからキャップ10の内側に向かって突出する。スパウト40は、側壁42に設けられ、スパウト40に対してキャップ10とバンド部50,140,140Aとの移動を規制する突起48,138,138Aを更に有する。バンド部50,140,140Aと周壁14とは、突起48,138,138Aのうちの周壁14に対向する部分よりも上方に位置する切込み80によって区画されており、当該切込み80はリブの内部まで延びている。
Claims (9)
- 円筒状の側壁と、前記側壁の外周面に設けられた外ネジと、前記側壁の一端側に設けられたフランジと、を有するスパウトと、
天板と、前記天板の外周縁に接続された周壁と、前記周壁の内周面に設けられ、前記外ネジと螺合する内ネジと、を有するキャップと、
前記周壁の一端に接続され、前記周壁と前記スパウトとの間において前記キャップを前記スパウトに固定するバンド部と、
前記周壁と前記バンド部とを接続し、前記周壁の端部の内周面と前記バンド部の内周面とから前記キャップの内側に向かって突出するリブと、を備え、
前記スパウトは、前記側壁に設けられ、前記スパウトに対する前記キャップと前記バンド部との移動を規制する突起を更に有し、
前記バンド部と前記周壁とは、前記突起のうちの前記周壁に対向する部分よりも上方に位置する切込みによって区画されており、当該切込みは前記リブの内部まで延びている、口栓。 - 前記リブの厚さは、0.4mm~0.6mmである、請求項1に記載の口栓。
- 前記キャップを前記スパウトから取り外したときに前記バンド部と前記キャップとが分断されるように、前記バンド部が前記キャップの前記周壁の一端に接続されており、
前記バンド部の下端と、前記フランジのうちの前記バンド部の下端と対向する部分との間には隙間が設けられており、
前記隙間の幅は、0.5mm以上である、請求項1又は2に記載の口栓。 - 前記バンド部の下端と前記切込みとの間の距離は、6.0mm以下である、請求項1~3のいずれか一項に記載の口栓。
- 前記バンド部は、前記リブが設けられる円筒状の本体と、前記本体の下端部から前記天板に向かうように傾斜するフック部と、を有し、
前記フック部は、前記突起に当接することによって、前記キャップが前記スパウトに対して離れることを規制する、請求項1~4のいずれか一項に記載の口栓。 - 前記フック部は、前記スパウトと離れた状態で前記突起の下面に対向するように配置されている、請求項5に記載の口栓。
- 前記バンド部は、前記フック部を含む複数のフック部を有し、
前記複数のフック部は、前記キャップの中心軸まわりの周方向に沿って、互いに間隔を空けて並んでおり、
前記バンド部は、前記複数のフック部のうちの互いに隣り合うフック部同士を接続し、前記複数のフック部よりも厚さが小さい複数の薄肉部を更に有する、請求項5又は6に記載の口栓。 - 請求項1~7のいずれか一項に記載の口栓と、
前記口栓が取り付けられる容器本体と、を備える包装容器。 - 外周面に外ネジが設けられた円筒状の側壁と、前記側壁の一端側に設けられたフランジと、前記側壁から外方に突出する突起と、を有するスパウトを準備する工程と、
天板と、前記天板の外周縁に接続され、内周面に内ネジが設けられた周壁と、前記周壁の内周面から突出するリブと、を有するキャップ部材を準備する工程と、
前記外ネジに前記内ネジを螺合させて、前記キャップ部材を前記スパウトに取り付ける工程と、
前記キャップ部材を前記スパウトに取り付けた状態で、前記突起のうちの前記周壁に対向する部分よりも上方の位置において、前記周壁の外縁から前記リブの内部まで延びる切込みを形成する工程と、を含む口栓の製造方法。
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US4497765A (en) * | 1979-09-21 | 1985-02-05 | H-C Industries, Inc. | Process for making a closure |
JPH02296666A (ja) * | 1989-01-30 | 1990-12-07 | Hc Ind Inc | 開栓を明らかにするプラスチック蓋装置 |
JP2000344265A (ja) * | 1999-06-08 | 2000-12-12 | Toppan Printing Co Ltd | 不正開封防止付開封刃内蔵口栓 |
WO2017043200A1 (ja) * | 2015-09-11 | 2017-03-16 | 日本山村硝子株式会社 | 合成樹脂製キャップ |
JP2018150056A (ja) * | 2017-03-10 | 2018-09-27 | 日本山村硝子株式会社 | 合成樹脂製キャップ及び容器 |
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Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4497765A (en) * | 1979-09-21 | 1985-02-05 | H-C Industries, Inc. | Process for making a closure |
JPH02296666A (ja) * | 1989-01-30 | 1990-12-07 | Hc Ind Inc | 開栓を明らかにするプラスチック蓋装置 |
JP2000344265A (ja) * | 1999-06-08 | 2000-12-12 | Toppan Printing Co Ltd | 不正開封防止付開封刃内蔵口栓 |
WO2017043200A1 (ja) * | 2015-09-11 | 2017-03-16 | 日本山村硝子株式会社 | 合成樹脂製キャップ |
JP2018150056A (ja) * | 2017-03-10 | 2018-09-27 | 日本山村硝子株式会社 | 合成樹脂製キャップ及び容器 |
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