WO2017212941A1 - Container sealing assembly - Google Patents

Container sealing assembly Download PDF

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Publication number
WO2017212941A1
WO2017212941A1 PCT/JP2017/019620 JP2017019620W WO2017212941A1 WO 2017212941 A1 WO2017212941 A1 WO 2017212941A1 JP 2017019620 W JP2017019620 W JP 2017019620W WO 2017212941 A1 WO2017212941 A1 WO 2017212941A1
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WO
WIPO (PCT)
Prior art keywords
cap
container
screw
container neck
screwing
Prior art date
Application number
PCT/JP2017/019620
Other languages
French (fr)
Japanese (ja)
Inventor
啓太郎 森
白根　隆志
Original Assignee
共同印刷株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 共同印刷株式会社 filed Critical 共同印刷株式会社
Publication of WO2017212941A1 publication Critical patent/WO2017212941A1/en

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    • 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
    • B65D41/02—Caps or cap-like covers without lines of weakness, tearing strips, tags, or like opening or removal devices
    • B65D41/04—Threaded or like caps or cap-like covers secured by rotation
    • 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
    • B65D51/00—Closures not otherwise provided for
    • B65D51/16—Closures not otherwise provided for with means for venting air or gas

Definitions

  • the present invention relates to a container sealing assembly.
  • a hermetic assembly comprising the neck of these containers and a screw-on cap is well known.
  • Sealing assemblies used in such containers protect the contents (eg, cosmetics, food, toothpaste, paints, etc.) by blocking them from outside air when they are capped, and remove the caps when using to remove some of the contents. By draining and putting it into use, and screwing the cap back on, the rest of the contents can again be shielded from the outside air to continue protection.
  • Such an assembly needs to form a secure hermetic seal in order to protect the contents and to prevent leakage of the contents in the closure.
  • the sealed state is formed by engagement of screws formed on the container neck and the cap, respectively, and / or by contact between a lip portion of the container neck and a sealing means formed on the cap base.
  • Patent Document 1 an external air introduction groove deeper than the thread diameter of the thread is formed vertically in the thread of the threaded portion of the outer surface of the container neck so that the external air enters the cap when the cap is opened.
  • Patent Document 1 A technique for avoiding the occurrence of decompression is disclosed.
  • Patent Document 1 is a technique that can avoid the occurrence of reduced pressure when opening the sealed assembly by an easy method.
  • this technique cuts off a part of the screw of the cap neck, there is a concern that the contact distance between the screw thread and the screw groove is shortened and the sealing reliability of the assembly is impaired. That is, the assembly according to the technique of Patent Document 1 has reduced friction between the screw thread and the screw groove in the tightened state, so that the assembly is carried around (especially in a bag or the like). It is difficult to deny the possibility that the contents will be leaked naturally and easily by applying a little external force.
  • the present invention has been made in view of the above situation. Therefore, the object of the present invention is to avoid the liquid leakage due to the reduced pressure formed inside the cap when the sealing assembly is opened, and / or even when applied to a steeply inclined screw or a multi-threaded screw. It is an object of the present invention to provide a configuration of a hermetic assembly that is highly reliable when sealed.
  • the present invention achieves the above object by the means summarized below.
  • a container neck having a screw part on the outer surface; A base and a peripheral wall projecting from the base; a screw part for screwing with a screw part of the outer surface of the container neck on the inner surface of the peripheral wall; and screwing into the container neck to seal the container
  • a container cap for A container closure assembly comprising: At least one of the outer surface of the container neck and the inner surface of the peripheral wall of the cap further includes a recessed screw portion for introducing outside air into the cap, and for screwing with the recessed screw portion.
  • a container cap for sealing the container by screwing into a threaded portion on the outer surface of the container neck, A base and a peripheral wall protruding from the base; A screw portion for screwing with a screw portion of the outer surface of the container neck portion on the inner surface of the peripheral wall; and a concave screw portion for introducing outside air into the cap.
  • the width of the screw groove is smaller than the width of the screw groove of the screw part for screwing, and the screw part for screwing and the recessed screw part do not intersect each other, cap.
  • the base of the cap has an inner pin protruding from the base and inserted into the opening of the lip of the container neck, and an outer ring protruding from the base and surrounding the periphery of the lip of the container neck.
  • a container neck for sealing the container by screwing into a threaded portion on the inner surface of the container cap peripheral wall On the outer surface, there are a screw portion for screwing with a screw portion on the inner surface of the cap peripheral wall, and a recessed screw portion for introducing outside air into the cap, and a screw groove of the recessed screw portion
  • the container neck wherein a width is smaller than a width of a screw groove of a screw part for screwing, and the screw part for screwing and the recessed screw part do not intersect each other.
  • the sealed assembly according to the present invention does not form a reduced pressure inside the cap when the cap is opened, liquid leakage due to the reduced pressure can be avoided; even when applied to steeply inclined screws or multiple threads, It is possible to provide a highly reliable sealing assembly at the time of sealing; and / or since the outside air introduction groove is not in a vertical configuration, even if the contents leak from the lip portion of the container, this is immediately It does not flow under the cap.
  • FIG. 1 is a cross-sectional view of a cap according to an embodiment of the present invention.
  • FIG. 2 is a side view of the upper part of the container which is preferably screwed with the cap of the present invention.
  • FIG. 3 is a partial cross-sectional view showing an embodiment of a sealing assembly comprising a cap and a container neck of the present invention.
  • FIG. 4 is a cross-sectional view (a) and (b) of the cap used in Example 1, and a partially enlarged cross-sectional view (c).
  • FIG. 5 is a cross-sectional view (a) and a partially enlarged cross-sectional view (b) of the cap used in Comparative Examples 1 and 2.
  • FIG. 1 is a cross-sectional view of a cap according to an embodiment of the present invention.
  • FIG. 2 is a side view of the upper part of the container which is preferably screwed with the cap of the present invention.
  • FIG. 3 is a partial cross-sectional view showing an embodiment of a sealing
  • FIG. 6 is an enlarged cross-sectional view showing the sealing means protruding on the cap base (common to Examples and Comparative Examples).
  • 7 is a top view (a) and a side view (b) of the upper portion of the tube container used in Example 1 and Comparative Example 1.
  • FIG. 8 is a top view (a) and a side view (b) of the upper part of the tube container used in Comparative Example 2.
  • FIG. 9 is an enlarged cross-sectional view showing a threaded portion on the outer surface of the container neck (common to Examples and Comparative Examples).
  • axial direction the direction of the rotational axis of torsion when the cap is opened or retightened.
  • the sealing assembly of the present invention comprises: A container neck having a threaded portion on the outer surface; A base and a peripheral wall projecting from the base; a screw part for screwing with a screw part of the outer surface of the container neck on the inner surface of the peripheral wall; and screwing into the container neck to seal the container
  • a container cap for A container closure assembly comprising: At least one of the outer surface of the container neck and the inner surface of the peripheral wall of the cap further includes a recessed screw portion for introducing outside air into the cap, and for screwing with the recessed screw portion. It is characterized in that it does not cross each other.
  • the recessed screw portion for introducing the outside air is formed on the inner surface of the cap peripheral wall, and the outer surface of the container neck portion is provided with the recessed screw portion for introducing the outside air. I don't have it.
  • the recessed screw portion for introducing the outside air is formed on the outer surface of the container neck, and the inner surface of the cap peripheral wall is provided with a recessed screw portion for introducing the outside air. I don't have it.
  • the recessed screw portion for introducing the outside air is formed on both the inner surface of the cap peripheral wall and the outer surface of the container neck.
  • the sealing assembly of the present invention can be suitably used to seal containers such as tubes, bottles, and pouches. It is particularly suitable as a tube or pouch sealing assembly.
  • the cap according to the first aspect of the present invention is a container cap for sealing the container by screwing into a threaded portion on the outer surface of the container neck.
  • the cap according to the first aspect of the present invention has a base and a peripheral wall protruding from the base.
  • the base may hold a peripheral wall and preferably an outer wall to be described later, and have a size and strength that can withstand torsion during opening and closing, and other requirements are optional.
  • the shape can be, for example, a disc shape, a hemispherical shape, a spherical shape, a cone shape, a truncated cone shape, a pyramid shape, a truncated pyramid shape, and the like.
  • the base When the base is disk-shaped, the base may be disk-shaped with any thickness.
  • the base may have a solid shape or a hollow shape with an arbitrary thickness.
  • the peripheral wall protrudes from the base portion in the axial direction and has a shape surrounding a container neck portion screwed with the cap. Accordingly, this peripheral wall has a (hollow) cylindrical shape.
  • the peripheral wall has a screw portion (hereinafter also referred to as a “threaded screw portion”) for screwing the inner wall with a screw portion on the outer surface of the container neck, and a concave screw portion for introducing outside air into the cap. (Hereinafter also referred to as “ventilating screw part”).
  • These screw portions are preferably spiral screws that are continuously recessed.
  • These screw portions preferably have, for example, a screw inclination from the start to the end of tightening and define a continuous screw track.
  • the inclination of the screw (lead angle) is preferably 5 ° or more, 8 ° or more, or 10 ° or more, taking into account the ease of opening and retightening, and may be 60 ° or less or 45 ° or less. it can.
  • the inclination of the screw is preferably 30 ° or less, 25 ° or less, or 20 ° or less.
  • the screwing screw part is screwed with the screw part on the outer surface of the container neck. Therefore, it is preferable that the threaded screw portion is a balanced screw capable of free sliding.
  • the number of threads of the threaded screw portion can be, for example, 1 to 4 according to the number of threads on the outer surface of the container neck, and is preferably 1 to 3, more preferably 1 or It is 2 articles, More preferably, it is 1 article.
  • the size of the thread groove of the threaded screw portion can be set as appropriate according to the size of the threaded portion of the outer surface of the container to be screwed therewith.
  • the height of the screw valley (the height of the catching mountain) can be about 0.3 mm or more and 3.0 mm or less.
  • the cross-sectional shape of the thread groove in the threaded screw portion can be any shape such as, for example, a triangular shape, a semicircular shape, a trapezoidal shape, or a shape in which corners of these shapes are rounded.
  • the ventilation screw part has a function of introducing outside air into the inside of the cap (specifically, the upper space inside the cap) and preventing the space from being decompressed when the cap is loosened in the opening direction.
  • the ventilation screw portion may not be scheduled to be screwed with the screw portion on the outer surface of the container neck, or may be in a mode capable of being screwed with the screw portion.
  • the cross-sectional shape of the thread groove in the ventilation screw part may be the same as that of the screw thread part.
  • the vent screw part is not scheduled to be screwed with the threaded part on the outer surface of the container neck, this vent screw is used to prevent the screw part on the outer surface of the container neck from accidentally screwing with the vent screw part.
  • the size of the screw groove of the portion is smaller than the size of the screw groove of the screwing screw portion.
  • the size of the thread groove of the ventilation screw portion is 60% or less for both the width and the depth of the screw valley as a ratio to the size of the screw groove of the screw thread portion in order to prevent erroneous introduction. It is preferable to set it as 50% or less, more preferably 40% or less. On the other hand, this ratio is preferably 5% or more, more preferably 10% or more, and further preferably 20% or more in order to ensure the effect of introducing outside air.
  • the size of the screw groove of the ventilation screw portion can be the same as the size of the screw screw groove.
  • the number of threads of the ventilation screw portion is made larger than the number of threads of the outer surface of the container neck, and the excess screw groove functions as having an outside air introduction function.
  • the number of threads on the outer surface of the container neck is 1, and the number of threads on the inner surface of the cap peripheral wall is 2,
  • the number of threads on the outer surface of the container neck may be 2, and the number of threads on the inner surface of the cap peripheral wall may be 3 or 4.
  • the screwing screw portion and the ventilation screw portion do not cross each other on the inner surface of the cap peripheral wall. If these screw parts intersect, a part of the threaded screw part will be cut off, so that friction between the male screw and female screw in the tightened state is reduced, and the sealing reliability of the sealing assembly may be impaired. There is. Most preferably, the screwing screw portion and the ventilation screw portion are formed in parallel.
  • the hermetic assembly of the present invention has a ventilation screw portion for introducing outside air into the cap. Therefore, the assembly cannot form a seal by screwing the screw between the cap and the container neck. Therefore, the sealing assembly of the present invention preferably has a separate sealing means.
  • sealing means for example, An inner pin protruding from the base and inserted into the lip opening of the container neck at the base of the cap; An inner ring at the base of the cap that protrudes from the base and is inserted into the lip opening of the container neck; An outer ring that protrudes from the base portion and surrounds the periphery of the container lip portion and serves as a guide for the container lip portion; A contact ring at the base of the cap that protrudes from the base and contacts the top wall of the lip of the container neck; Etc. can be illustrated.
  • a cap having one or more types selected from an inner pin or inner ring, an outer ring, and a contact ring, and a cap having two or more types selected from these in applications that require strong sealing It is preferable that
  • the inner pin can be suitably applied when the opening diameter (mouth inner diameter) of the lip portion of the container neck is relatively small.
  • the inner diameter of the mouth to which the inner pin is applied is, for example, approximately 15 mm or less, 10 mm or less, or 8 mm or less, for example, 1 mm or more or 3 mm or more.
  • the inner pin has a diameter that is the same as or slightly larger than the inner diameter of the neck of the container neck. Specifically, it can be 100% or more and 105% or less, or 100% or more and 103% or less with respect to the inner diameter of the mouth of the container neck.
  • the length of the inner pin can be, for example, 0.1 mm or more, 0.3 mm or more, or 0.5 mm or more, and can be 3 mm or less, 2.5 mm or less, or 2 mm or less.
  • One inner ring can be suitably applied when the inner diameter of the lip portion of the container neck is relatively large.
  • the inner diameter of the mouth to which the inner ring is applied is, for example, approximately 5 mm or more, 10 mm or more, or 15 mm or more, for example, 100 mm or less or 50 mm or less.
  • the outer diameter of the bottom of the inner ring is preferably the same as or slightly larger than the mouth inner diameter of the container neck. Specifically, it can be 100% or more and 105% or less, or 100% or more and 103% or less with respect to the inner diameter of the mouth of the container neck.
  • the width at the bottom of the inner ring may be the same as the inner pin in the first sealing means.
  • the width of the inner ring may be the same from the bottom to the tip, may be gradually narrowed from the bottom to the tip, or may have a bulbous protrusion at the tip. May be.
  • the inner ring may protrude vertically from the cap base.
  • the protrusion height of the inner ring from the cap base is preferably lower than that of the outer ring.
  • the outer ring has a shape that protrudes in a ring shape from the base of the cap and surrounds the periphery of the container lip. Accordingly, the sealing ring protrudes from the base of the cap in a (hollow) substantially cylindrical shape.
  • the role of the outer ring is to serve as a guide that guides the mouth of the container neck to be inserted into the inner pin. Therefore, it is preferable that the inner diameter of the bottom part of the outer ring (the hairline from the cap base) is the same as or slightly larger than the outer diameter of the mouth of the container neck. Specifically, it can be 100% or more and 105% or less, or 100% or more and 103% or less with respect to the mouth outer diameter of the container neck.
  • the width at the bottom of the outer ring can be, for example, 0.1 mm or more and 2 mm or less.
  • the width of the outer ring may be the same from the bottom to the tip, or may gradually narrow as it goes from the bottom to the tip.
  • the outer ring may protrude vertically from the cap base, or may have a shape that gradually opens outward as it goes from the bottom to the front.
  • the protruding height of the outer ring from the cap base can be, for example, 0.1 mm or more, 0.3 mm or more, or 0.5 mm or more, and can be 3 mm or less, 2.5 mm or less, or 2 mm or less. it can.
  • the protruding height of the outer ring from the cap base is preferably higher than the protruding height of the inner pin so as to function as a guide for guiding the mouth of the container neck to the inner pin.
  • the contact ring can be suitably applied when the inner diameter of the lip portion of the container neck is relatively large.
  • a preferable inner diameter of the mouth to which the contact ring is applied is the same as that of the inner ring.
  • the contact ring has a function of forming a seal by contacting (preferably pressing) the top wall of the lip at the mouth of the container neck.
  • the top wall of the lip portion means the tip of the lip portion, and may be flat or may have a convex shape with a semicircular cross section, for example.
  • the diameter of the portion where the contact ring contacts the top wall of the lip is preferably larger than the inner diameter of the mouth of the lip of the container neck and smaller than the outer diameter of the mouth of the lip.
  • the width of the contact ring may be the same from the bottom to the tip, may be gradually narrowed from the bottom to the tip, or may have a bulbous protrusion at the tip. May be.
  • the contact ring may protrude vertically from the cap base.
  • the above sealing means can form an effective seal even when each is used alone.
  • specific combinations for example, the following cases can be exemplified.
  • a cap having an inner pin and an outer ring; A cap having an inner pin and a contact ring; A cap having an inner pin, an outer ring, and a contact ring;
  • a cap having an inner ring and an outer ring; A cap having an inner ring and a contact ring; A cap having an inner ring, an outer ring, and a contact ring;
  • the cap in the hermetic assembly of the present invention may further have an outer wall that protrudes from the base and surrounds the outside of the peripheral wall.
  • the outer wall is preferably arranged from the viewpoint of universal design, etc., which is not involved in screwing with the threaded portion of the container neck, for example, to facilitate opening by a user with a weak grip force by increasing the operation diameter.
  • the thickness and height of the outer wall may be appropriately set according to the container design. For example, it can have a thickness of 0.1 mm or more, 0.3 mm or more, 2 mm or less, or 1.5 mm or less, and a height of 5 mm or more, 10 mm or more, 50 mm or less, or 30 mm or less.
  • the cap in the hermetic assembly of the present invention may be manufactured using any material.
  • the cap preferably has an appropriate flexibility and a comfortable touch, and is preferably made of an inexpensive material.
  • the cap is more preferably made of a synthetic resin.
  • synthetic resins include polyolefins such as polyethylene and polypropylene; polyesters such as polyethylene terephthalate (PET), polybutylene terephthalate, polyethylene naphthalate, and polybutylene naphthalate; alkyl (meth) acrylate, (meth) acrylic acid- Examples thereof include acrylic resins such as styrene copolymers.
  • PET polyethylene terephthalate
  • polybutylene terephthalate polyethylene naphthalate
  • polybutylene naphthalate polybutylene naphthalate
  • acrylic resins such as styrene copolymers.
  • the cap in the hermetic assembly according to the first aspect of the present invention can be easily manufactured by using, for example, injection molding using the above material.
  • a hermetic assembly includes the above-described cap and a container neck portion having a screw portion screwed with a screwing screw portion of the cap on an outer surface. It is preferable that the threaded portion of the container neck is protruded from the outer surface of the neck.
  • This container neck is part of the container.
  • the container may have the container neck, the container body, and a container shoulder connecting them.
  • the bottom of the container body may be sealed; when the container is a bottle, the container body may be integrally formed with the bottom closed.
  • the container is sealed by the sealing assembly of the present invention consisting of the cap and the container neck.
  • the container neck has a screw portion that is screwed with the screwing screw portion of the cap on the outer surface thereof.
  • This thread portion is preferably a thread.
  • Locking means that engage with each other to form a click stop may be disposed on both the threaded portion of the container neck and the threaded screw portion of the cap.
  • the container neck has an appropriate hardness because it needs to be screwed with the cap to form a hermetic seal and to exhibit a certain sealing reliability.
  • it is made of a relatively hard resin that can be injection-molded, and particularly preferably a neck made of high-density polyethylene (HDPE).
  • HDPE high-density polyethylene
  • the container body preferably has functions such as barrier properties and appropriate flexibility, for example, synthetic resin, metal foil (especially aluminum foil), metal-deposited polyester resin (particularly aluminum-deposited PET), silica-deposited, etc.
  • a laminate container having two or more layers selected from polyester resins (particularly silica-deposited PET) is preferable.
  • the synthetic resin include polyolefin resins.
  • the polyolefin resin is preferably a polyethylene resin, specifically, for example, low density polyethylene (LDPE), linear low density polyethylene (LLDPE), medium density polyethylene (MDPE), high density polyethylene (HDPE), ethylene.
  • EAA ethylene-methacrylic acid copolymer
  • EMA ethylene-ethyl acrylate copolymer
  • EAA ethylene-methyl acrylate copolymer
  • EVA ethylene-vinyl acetate copolymer
  • carboxylic acid-modified polyethylene carboxylic acid-modified ethylene-vinyl acetate copolymer, ionomer, etc., and derivatives thereof, and mixtures thereof.
  • the bottom seal of the container body may be formed by a known method (for example, heat sealing, hot air, ultrasonic sealing, etc.).
  • the container body can be obtained by, for example, blow molding, with the cap closed from the beginning, integral with the cap, or as a separate part from the cap.
  • the container shoulder is preferably made of a material that has a function of connecting the container neck and the container body and resists torsion during opening and retightening, particularly when the container is a tube or a pouch. From this point of view, the shoulder is particularly preferably made of HDPE. If the container is a bottle, it does not have to have a shoulder.
  • the hermetic assembly according to the first aspect of the present invention has a recessed screw portion for introducing outside air into the cap, no decompression is formed inside the cap when the cap is opened. Liquid leakage due to the reduced pressure can be avoided. Furthermore, this sealing assembly does not require the formation of a cut in the threaded portion used for screwing in order to avoid a reduced pressure state when opening. Accordingly, since the opening torque and the closing torque are the same as those of a conventionally known hermetic assembly, when storing in a closed state, a container filled with the contents or a container with the contents remaining in use is particularly bagged. High reliability of sealing when carrying in a container.
  • FIG. 1 shows a cross-sectional view of a cap 10 according to an embodiment of the first aspect of the present invention.
  • the peripheral wall 12 protrudes from the base part 11, and the screwing screw part 13 and the ventilation
  • Each of these screw portions has a substantially trapezoidal cross section.
  • the width of the screw groove of the ventilation screw portion is narrower than the width of the screw groove of the screwing screw portion, and the depth of the screw valley of the ventilation screw portion is smaller than the depth of the screw valley of the screwing screw portion.
  • the cap 10 has an inner pin 15 protruding from the center of the base 11 and an outer ring 16 protruding from the base 11 as sealing means.
  • the cap 10 further has an outer wall 17 on the outer side of the peripheral wall 12 so as to protrude from the base 11 and surround the peripheral wall 12.
  • the outer wall 17 does not have a screw portion.
  • FIG. 2 is a side view of the upper part of the container that is preferably screwed into the cap 10.
  • FIG. 2 also shows a shoulder 30 and a container body 40 in addition to the container neck 20 constituting the hermetic assembly of the present invention.
  • the container neck part 20 shown in FIG. 2 has a lip part 21 and a screw part 22 that is a thread projecting from the outer surface of the neck part.
  • FIG. 3 is a partial cross-sectional view showing an embodiment of a sealing assembly including the cap of FIG. 1 and the container neck of FIG. FIG. 3 shows the assembly in a clamped state, with some of the leader lines identifying the components omitted for simplicity.
  • the screwing screw portion 13 in the cap 10 is screwed with the screw portion on the outer surface of the container neck portion 20 to tighten the sealing assembly.
  • the ventilation screw portion 14 of the cap 10 is not screwed with other screws, and therefore the screw trajectory defined by the recessed portion remains as a space so that air can flow inside and outside the cap 10. It is. This can prevent leakage of contents caused by applying a reduced pressure into the cap when the assembly is opened.
  • the assembly of FIG. 3 has a separate sealing means because a seal cannot be formed by screwing the cap and the container neck.
  • the inner pin 15 protruding from the base of the cap 10 is inserted into the opening of the container lip portion, and protrudes in a ring shape from the base. It can be seen that the outer ring 16 that surrounds the container lip.
  • the inner pin 15 and outer ring 16 and the lip portion of the container neck part cooperate to form a hermetic seal.
  • the cap according to the second aspect of the present invention is a container cap for sealing the container by screwing into a threaded portion on the outer surface of the container neck, and has a base and a peripheral wall protruding from the base.
  • the above-mentioned peripheral wall has a screw portion for screwing with a screw portion on the outer surface of the container neck on the inner surface, but has no concave screw portion for introducing outside air. It can be the same as the cap in the first aspect.
  • the container neck in the second aspect of the present invention has a screw portion for screwing with a screw portion existing on the inner surface of the peripheral wall of the cap, and a concave screw portion for introducing outside air into the upper portion of the cap.
  • the screw portion and the recessed screw portion for screwing can be in the same mode as the screwing screw portion and the ventilation screw portion of the cap in the container sealing assembly according to the first aspect of the present invention, or It can be set as the aspect which added the appropriate change by those skilled in the art to this.
  • a sealing assembly according to a second aspect of the present invention comprises the cap and the container neck.
  • Other aspects and advantages are the same as or similar to those of the first aspect of the present invention.
  • the hermetic assembly according to the third aspect of the present invention comprises the cap according to the first aspect and the container neck according to the second aspect. Specific embodiments and advantages of the sealing assembly according to the third aspect are the same as or equivalent to those of the first aspect of the present invention.
  • LLDPE linear low density polyethylene
  • LDPE film low density polyethylene film
  • EAA ethylene-acrylic acid copolymer resin
  • AL foil Aluminum foil
  • EMAA Ethylene-methacrylic acid copolymer resin
  • pellets supplied by melt extrusion PET film Polyethylene terephthalate film
  • Dry laminate adhesive Two-component curable urethane adhesive
  • LLDPE film Linear low density polyethylene film
  • Example 1 (1) Manufacture of tube container Laminate containing aluminum foil “LLDPE / LDPE film / EAA / AL foil / EMAA / PET film / dry laminate adhesive / LLDPE film” (laminate with 8 layers, total thickness 400 ⁇ m) The tube body was cut, and the ends of the cut surfaces were overlapped and sealed with high frequency to form a tube body in a cylindrical shape. The tube body was inserted into a mandrel, and the HDPE resin heated in a range of 170 ° C. to 220 ° C. was extruded from above the tube body into a donut shape and placed on a mandrel head (male).
  • the diameter of the mandrel head having a lip with an inner diameter of 1.2 mm ⁇ is pressed by pressing the mandrel head against a mold having a female shape corresponding to the neck portion of the tube container and the threaded portion of the outer surface thereof, and removing the tube body from the mandrel after cooling.
  • a tube container having a round long nozzle shape of 25.2 mm ⁇ was obtained.
  • the threaded portion of the tube container neck in Example 1 is a screw having a number of strips of 1, a thread width of 1.8 mm, and a thread height of 0.8 mm.
  • Cap of Example 1 was manufactured by preparing a mold corresponding to the shape shown in FIGS. 4 and 6 and injection-molding PP resin.
  • the inner diameter of the cap is 9.9 mm ⁇ , and the height of the peripheral wall is 19.0 mm.
  • the cap has an inner pin, an outer ring, and a contact ring as sealing means.
  • An electric injection molding machine was used for injection molding.
  • the cooling temperature was 20 ° C., and the molded product was separated from the runner by opening and closing the mold.
  • Threaded screw portion and the vent screw portion of the cap in the first embodiment are as follows.
  • Screw part Number of strips: 1 strip Thread groove width: 1.8mm Thread groove depth: 0.8mm
  • Thread groove depth 0.8mm
  • Thread groove depth 0.6mm
  • Opening strength test Measurement of opening torque
  • Example 1 A cap having no ventilation screw portion was manufactured in the same manner as in Example 1 except that the shape of the cap was changed as shown in FIGS. This cap has an inner pin, an outer ring, and a contact ring as sealing means. Evaluation was performed in the same manner as in Example 1 except that the cap was used. The evaluation results are shown in Tables 1 and 2.
  • Example 1 which is an example of the present invention, suppresses leakage of the contents, and the torque at the time of opening is the same level as that without the outside air introduction groove. Can be secured.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Closures For Containers (AREA)
  • Containers Having Bodies Formed In One Piece (AREA)

Abstract

A container sealing assembly configured from: a container neck 20 with a thread section on the outer surface; and a container cap, which is for screwing engagement with the container neck to seal the container and which has a base and a surrounding wall protruding from said base, the inner surface of the surrounding wall having a thread section 13 for screwing engagement with the thread section of the container neck outer surface. In the assembly, the outer surface of the container neck and/or the inner surface of the surrounding wall of the cap also has a recessed thread section 14 for introducing outside air to the interior of the cap, and the recessed thread section and the thread section for screwing engagement do not intersect with each other.

Description

容器密閉アセンブリContainer seal assembly
　本発明は、容器密閉アセンブリに関する。 The present invention relates to a container sealing assembly.
　チューブ、ボトル、パウチ等の容器において、これら容器の頸部とねじ込み式のキャップとから成る密閉アセンブリはよく知られている。このような容器に用いられる密閉アセンブリは、締栓時には内容物（例えば、化粧品、食品、練り歯磨き、絵の具等）を外気から遮断して保護し、使用時にはキャップを外して内容物の一部を排出して使用に供し、そしてキャップを再びねじ込むことにより、内容物の残部を再び外気から遮断して保護を継続することができる。 For containers such as tubes, bottles, pouches, etc., a hermetic assembly comprising the neck of these containers and a screw-on cap is well known. Sealing assemblies used in such containers protect the contents (eg, cosmetics, food, toothpaste, paints, etc.) by blocking them from outside air when they are capped, and remove the caps when using to remove some of the contents. By draining and putting it into use, and screwing the cap back on, the rest of the contents can again be shielded from the outside air to continue protection.
　このようなアセンブリは、内容物を保護するため、及び締栓中の内容物の漏洩を防ぐために、確実な密閉状態を形成する必要がある。密閉状態は、容器頸部及びキャップにそれぞれ形成されたネジの噛み合わせにより、及び／又は、容器頸部のリップ部とキャップ基部に形成された密閉手段との接触により、形成される。 Such an assembly needs to form a secure hermetic seal in order to protect the contents and to prevent leakage of the contents in the closure. The sealed state is formed by engagement of screws formed on the container neck and the cap, respectively, and / or by contact between a lip portion of the container neck and a sealing means formed on the cap base.
　締栓したアセンブリを開栓するためにキャップを外す方向にネジを緩めると、キャップはその中心軸上を容器頸部から離れる方向に移動する。このとき、容器頸部とキャップ上部内壁との間の空間体積が増大するから、キャップ内部の圧力が減圧となる。そのため、内容物が容器から吸い出されて液漏れを起こすことがある。 When the screw is loosened in the direction to remove the cap in order to open the capped assembly, the cap moves on the central axis away from the container neck. At this time, since the space volume between the container neck and the cap upper inner wall increases, the pressure inside the cap is reduced. For this reason, the contents may be sucked out of the container and cause liquid leakage.
　上記の液漏れを防止する技術は、種々提案されている。例えば、特許文献１には、容器頸部外面のネジ部のネジ山に、該ネジ山の谷径よりも深い外気導入溝を縦設し、開栓時にキャップの内部に外気が入るようにして減圧の発生を回避する技術が開示されている。 Various techniques for preventing the above liquid leakage have been proposed. For example, in Patent Document 1, an external air introduction groove deeper than the thread diameter of the thread is formed vertically in the thread of the threaded portion of the outer surface of the container neck so that the external air enters the cap when the cap is opened. A technique for avoiding the occurrence of decompression is disclosed.
特開２００４－１８４５号公報Japanese Patent Laid-Open No. 2004-1845
　上記特許文献１の技術は、密閉アセンプリ開栓時の減圧の発生を容易な方法によって回避できる技術である。しかしながらこの技術は、キャップ頸部のネジの一部を寸断するものであるため、ネジ山とネジ溝との接触距離を短くし、該アセンブリの密閉信頼性を損なう懸念がある。つまり、特許文献１の技術によるアセンブリは、締栓状態におけるネジ山とネジ溝との間の摩擦が減ぜられているから、締栓保管時（特に該アセンブリをバッグ等に入れて持ち歩いているとき）に自然に又は少しの外力印加で容易に開栓され、内容物が漏洩する可能性が否定できないのである。 The technique of the above-mentioned Patent Document 1 is a technique that can avoid the occurrence of reduced pressure when opening the sealed assembly by an easy method. However, since this technique cuts off a part of the screw of the cap neck, there is a concern that the contact distance between the screw thread and the screw groove is shortened and the sealing reliability of the assembly is impaired. That is, the assembly according to the technique of Patent Document 1 has reduced friction between the screw thread and the screw groove in the tightened state, so that the assembly is carried around (especially in a bag or the like). It is difficult to deny the possibility that the contents will be leaked naturally and easily by applying a little external force.
　特に近年、できるだけ少ない回転数で開栓したいとの要望に応えて登場した急傾斜ネジ又は多条ネジを備えたアセンブリは、締栓状態におけるネジ山とネジ溝との接触距離がもともと短いから、このようなアセンブリに特許文献１の技術を適用すると、自然開栓の危険性はより高くなる。 In particular, in recent years, assemblies with steeply inclined screws or multi-threaded screws that have appeared in response to the desire to open at as few revolutions as possible have a short contact distance between the screw thread and the screw groove in the tightened state. When the technique of Patent Document 1 is applied to such an assembly, the risk of natural opening increases.
　特許文献１の技術では、更に、外気導入用の溝が縦設されているから、何らかの理由によって容器から漏洩した内容物が、直ちにキャップ下へと流れ出る危険を有する。 In the technique of Patent Document 1, since the groove for introducing outside air is further provided vertically, there is a risk that the contents leaked from the container for any reason will immediately flow under the cap.
　本発明は、上記のような現状に鑑みてなされたものである。従って本発明の目的は、密閉アセンブリの開栓時にキャップの内部に形成される減圧による液漏れを回避することができ、及び／又は、急傾斜ネジ又は多条ネジに適用した場合であっても締栓時の密閉信頼性の高い、密閉アセンブリの構成を提供することである。 The present invention has been made in view of the above situation. Therefore, the object of the present invention is to avoid the liquid leakage due to the reduced pressure formed inside the cap when the sealing assembly is opened, and / or even when applied to a steeply inclined screw or a multi-threaded screw. It is an object of the present invention to provide a configuration of a hermetic assembly that is highly reliable when sealed.
　本発明は、以下に要約される手段によって上記の目的を達成したものである。 The present invention achieves the above object by the means summarized below.
　［１］　外面にネジ部を有する容器頸部と、
　基部及び該基部から突出する周壁を有し、前記周壁の内面に前記容器頸部外面のネジ部と螺合するためのネジ部を有し、前記容器頸部に螺合させて容器を密閉するための容器用キャップと、
から成る容器密閉アセンブリであって、
　前記容器頸部の外面及び前記キャップの周壁の内面のうちの少なくとも一方に、前記キャップの内部に外気を導入するための凹設ネジ部を更に有し、該凹設ネジ部と螺合のためのネジ部とが互いに交差しない、前記アセンブリ。 [1] A container neck having a screw part on the outer surface;
A base and a peripheral wall projecting from the base; a screw part for screwing with a screw part of the outer surface of the container neck on the inner surface of the peripheral wall; and screwing into the container neck to seal the container A container cap for
A container closure assembly comprising:
At least one of the outer surface of the container neck and the inner surface of the peripheral wall of the cap further includes a recessed screw portion for introducing outside air into the cap, and for screwing with the recessed screw portion. The assembly of claim 1, wherein the threaded portion of the assembly does not cross each other.
　「２」　前記前記凹設ネジ部のネジ溝の幅が、前記螺合のためのネジ部のネジ溝の幅と同じであるか、或いはこれよりも小さい、［１］に記載のアセンブリ。 [2] The assembly according to [1], wherein a width of a screw groove of the recessed screw portion is equal to or smaller than a width of a screw groove of the screw portion for screwing.
　［３］　容器頸部外面のネジ部に螺合させて容器を密閉するための容器用キャップであって、
　基部と、該基部から突出する周壁とを有し、
　前記周壁の内面に、前記容器頸部外面のネジ部と螺合するためのネジ部と、前記キャップの内部に外気を導入するための凹設ネジ部と、を有し、前記凹設ネジ部のネジ溝の幅は前記螺合のためのネジ部のネジ溝の幅よりも小さく、そして
　前記螺合のためのネジ部と前記凹設ネジ部とが互いに交差しないことを特徴とする、前記キャップ。 [3] A container cap for sealing the container by screwing into a threaded portion on the outer surface of the container neck,
A base and a peripheral wall protruding from the base;
A screw portion for screwing with a screw portion of the outer surface of the container neck portion on the inner surface of the peripheral wall; and a concave screw portion for introducing outside air into the cap. The width of the screw groove is smaller than the width of the screw groove of the screw part for screwing, and the screw part for screwing and the recessed screw part do not intersect each other, cap.
　［４］　前記キャップの基部が、該基部から突出して容器頸部のリップ部開口内に挿入されるインナーピンと、該基部から突出して容器頸部のリップ部の周囲を囲うアウターリングと、を有する、［３］に記載のキャップ。 [4] The base of the cap has an inner pin protruding from the base and inserted into the opening of the lip of the container neck, and an outer ring protruding from the base and surrounding the periphery of the lip of the container neck. The cap according to [3].
　［５］　前記キャップの基部が、該基部から突出して容器頸部のリップ部開口内に挿入されるインナーリングと、該基部から突出して容器頸部のリップ部の周囲を囲うアウターリングと、を有する、［３］に記載のキャップ。 [5] An inner ring in which the base of the cap protrudes from the base and is inserted into the lip opening of the container neck, and an outer ring that protrudes from the base and surrounds the periphery of the lip of the container neck. The cap according to [3].
　［６］　前記基部から突出し、前記周壁の外側を囲う外壁を更に有する、［３］～［５］いずれか一項に記載のキャップ。 [6] The cap according to any one of [3] to [5], further including an outer wall protruding from the base and surrounding the outside of the peripheral wall.
　［７］　容器用キャップ周壁内面のネジ部に螺合させて容器を密閉するための容器頸部であって、
　外面に、前記キャップ周壁内面のネジ部と螺合するためのネジ部と、前記キャップの内部に外気を導入するための凹設ネジ部と、を有し、前記凹設ネジ部のネジ溝の幅は前記螺合のためのネジ部のネジ溝の幅よりも小さく、そして
　前記螺合のためのネジ部と前記凹設ネジ部とが互いに交差しないことを特徴とする、前記容器頸部。 [7] A container neck for sealing the container by screwing into a threaded portion on the inner surface of the container cap peripheral wall,
On the outer surface, there are a screw portion for screwing with a screw portion on the inner surface of the cap peripheral wall, and a recessed screw portion for introducing outside air into the cap, and a screw groove of the recessed screw portion The container neck, wherein a width is smaller than a width of a screw groove of a screw part for screwing, and the screw part for screwing and the recessed screw part do not intersect each other.
　［８］　［１］に記載のアセンブリによって密閉されることを特徴とする、容器。 [8] A container which is sealed by the assembly according to [1].
　［９］　チューブ、ボトル、又はパウチである、［８］に記載の容器。 [9] The container according to [8], which is a tube, a bottle, or a pouch.
　本発明による密閉アセンブリは、開栓時にキャップ内部に減圧が形成されることがないから、減圧による液漏れを回避することができ；急傾斜ネジ又は多条ネジに適用した場合であっても、締栓時の密閉信頼性の高い密閉アセンブリを与えることができ；及び／又は、外気導入溝が縦設形状ではないから、容器のリップ部から内容物が漏洩した場合であっても、これが直ちにキャップ下へと流れ出ることはない。 Since the sealed assembly according to the present invention does not form a reduced pressure inside the cap when the cap is opened, liquid leakage due to the reduced pressure can be avoided; even when applied to steeply inclined screws or multiple threads, It is possible to provide a highly reliable sealing assembly at the time of sealing; and / or since the outside air introduction groove is not in a vertical configuration, even if the contents leak from the lip portion of the container, this is immediately It does not flow under the cap.
図１は、本発明の一実施形態におけるキャップの断面図である。FIG. 1 is a cross-sectional view of a cap according to an embodiment of the present invention. 図２は、本発明のキャップと好ましく螺合する容器上部の側面図である。FIG. 2 is a side view of the upper part of the container which is preferably screwed with the cap of the present invention. 図３は、本発明のキャップと容器頸部とから成る密閉アセンブリの一実施形態を示す部分断面図である。FIG. 3 is a partial cross-sectional view showing an embodiment of a sealing assembly comprising a cap and a container neck of the present invention. 図４は、実施例１で使用したキャップの断面図（ａ）及び（ｂ）、並びに部分拡大断面図（ｃ）である。FIG. 4 is a cross-sectional view (a) and (b) of the cap used in Example 1, and a partially enlarged cross-sectional view (c). 図５は、比較例１及び２で使用したキャップの断面図（ａ）及び部分拡大断面図（ｂ）である。FIG. 5 is a cross-sectional view (a) and a partially enlarged cross-sectional view (b) of the cap used in Comparative Examples 1 and 2. 図６は、キャップ基部上に突出する密閉手段を示す拡大断面図である（実施例、比較例共通）。FIG. 6 is an enlarged cross-sectional view showing the sealing means protruding on the cap base (common to Examples and Comparative Examples). 図７は、実施例１及び比較例１で使用したチューブ容器上部の上面図（ａ）及び側面図（ｂ）である。7 is a top view (a) and a side view (b) of the upper portion of the tube container used in Example 1 and Comparative Example 1. FIG. 図８は、比較例２で使用したチューブ容器上部の上面図（ａ）及び側面図（ｂ）である。8 is a top view (a) and a side view (b) of the upper part of the tube container used in Comparative Example 2. FIG. 図９は、容器頸部外面のネジ部を示す拡大断面図である（実施例、比較例共通）。FIG. 9 is an enlarged cross-sectional view showing a threaded portion on the outer surface of the container neck (common to Examples and Comparative Examples).
　以下、本発明について、必要に応じて図面を参照しながら詳細に説明する。本明細書において、キャップを開栓又は再締栓するときのねじりの回転軸の方向を、以下「軸方向」という。 Hereinafter, the present invention will be described in detail with reference to the drawings as necessary. In the present specification, the direction of the rotational axis of torsion when the cap is opened or retightened is hereinafter referred to as “axial direction”.
＜密閉アセンブリ＞
　本発明の密閉アセンブリは、
　外面にネジ部を有する容器頸部と、
　基部及び該基部から突出する周壁を有し、前記周壁の内面に前記容器頸部外面のネジ部と螺合するためのネジ部を有し、前記容器頸部に螺合させて容器を密閉するための容器用キャップと、
から成る容器密閉アセンブリであって、
　前記容器頸部の外面及び前記キャップの周壁の内面のうちの少なくとも一方に、前記キャップの内部に外気を導入するための凹設ネジ部を更に有し、該凹設ネジ部と螺合のためのネジ部とが互いに交差しないことを特徴とする。 <Sealing assembly>
The sealing assembly of the present invention comprises:
A container neck having a threaded portion on the outer surface;
A base and a peripheral wall projecting from the base; a screw part for screwing with a screw part of the outer surface of the container neck on the inner surface of the peripheral wall; and screwing into the container neck to seal the container A container cap for
A container closure assembly comprising:
At least one of the outer surface of the container neck and the inner surface of the peripheral wall of the cap further includes a recessed screw portion for introducing outside air into the cap, and for screwing with the recessed screw portion. It is characterized in that it does not cross each other.
　本発明の第１の観点によると、上記外気を導入するための凹設ネジ部は、キャップ周壁の内面に形成されており、容器頸部の外面は外気を導入するための凹設ネジ部を有さない。 According to the first aspect of the present invention, the recessed screw portion for introducing the outside air is formed on the inner surface of the cap peripheral wall, and the outer surface of the container neck portion is provided with the recessed screw portion for introducing the outside air. I don't have it.
　本発明の第２の観点によると、上記外気を導入するための凹設ネジ部は、容器頸部の外面に形成されており、キャップ周壁の内面は外気を導入するための凹設ネジ部を有さない。 According to the second aspect of the present invention, the recessed screw portion for introducing the outside air is formed on the outer surface of the container neck, and the inner surface of the cap peripheral wall is provided with a recessed screw portion for introducing the outside air. I don't have it.
　本発明の第３の観点によると、上記外気を導入するための凹設ネジ部は、キャップ周壁の内面及び容器頸部の外面の双方に形成されている。 According to the third aspect of the present invention, the recessed screw portion for introducing the outside air is formed on both the inner surface of the cap peripheral wall and the outer surface of the container neck.
　本発明の密閉アセンブリは、例えば、チューブ、ボトル、パウチ等の容器を密閉するために、好適に用いることができる。特にチューブ又はパウチの密閉アセンブリとして好適である。 The sealing assembly of the present invention can be suitably used to seal containers such as tubes, bottles, and pouches. It is particularly suitable as a tube or pouch sealing assembly.
＜＜第１の観点＞＞
＜キャップ＞
　本発明の第１の観点におけるキャップは、容器頸部外面のネジ部に螺合させて該容器を密閉するための容器用キャップである。 << First viewpoint >>
<Cap>
The cap according to the first aspect of the present invention is a container cap for sealing the container by screwing into a threaded portion on the outer surface of the container neck.
　本発明の第１の観点におけるキャップは、基部と、該基部から突出する周壁とを有する。 The cap according to the first aspect of the present invention has a base and a peripheral wall protruding from the base.
　基部は、周壁及び好ましくは後述の外壁を保持し、開栓及び再締栓時のねじりに耐え得るサイズ及び強度を有していればよく、それ以外の要件は任意である。形状は、例えば、円盤状、半球状、球欠状、円錐状、円錐台状、角錐状、角錐台状等、及びその他の形状であることができる。基部が円盤状である場合、該基部は任意の厚さを持った円盤状であってよい。基部がその他の形状である場合、該基部は中実の形状であってもよいし、任意の厚さを持った中空の形状であってもよい。 The base may hold a peripheral wall and preferably an outer wall to be described later, and have a size and strength that can withstand torsion during opening and closing, and other requirements are optional. The shape can be, for example, a disc shape, a hemispherical shape, a spherical shape, a cone shape, a truncated cone shape, a pyramid shape, a truncated pyramid shape, and the like. When the base is disk-shaped, the base may be disk-shaped with any thickness. When the base has another shape, the base may have a solid shape or a hollow shape with an arbitrary thickness.
　周壁は、前記基部から軸方向に突出し、キャップと螺合する容器頸部を囲う形状を有する。従ってこの周壁は（中空の）円筒状である。 The peripheral wall protrudes from the base portion in the axial direction and has a shape surrounding a container neck portion screwed with the cap. Accordingly, this peripheral wall has a (hollow) cylindrical shape.
　周壁は、その内面に前記容器頸部外面のネジ部と螺合するためのネジ部（以下、「螺合ネジ部」ともいう。）、及びキャップ内部に外気を導入するための凹設ネジ部（以下、「通気ネジ部」ともいう。）を有する。これらのネジ部は、連続して凹設された螺旋状のネジであることが好適である。これらのネジ部は、例えば、締付けの開始から終わりまで至るネジ傾斜を有し、連続したネジ軌道を規定するものであることが好ましい。ネジの傾斜（リード角）は、開栓及び再締付けの容易性を考慮すると、５°以上、８°以上、又は１０°以上とすることが好ましく、６０°以下又は４５°以下であることができる。予期しない自然開栓の危険を排除するためには、ネジの傾斜を、３０°以下、２５°以下、又は２０°以下とすることが好ましい。 The peripheral wall has a screw portion (hereinafter also referred to as a “threaded screw portion”) for screwing the inner wall with a screw portion on the outer surface of the container neck, and a concave screw portion for introducing outside air into the cap. (Hereinafter also referred to as “ventilating screw part”). These screw portions are preferably spiral screws that are continuously recessed. These screw portions preferably have, for example, a screw inclination from the start to the end of tightening and define a continuous screw track. The inclination of the screw (lead angle) is preferably 5 ° or more, 8 ° or more, or 10 ° or more, taking into account the ease of opening and retightening, and may be 60 ° or less or 45 ° or less. it can. In order to eliminate the risk of unexpected natural opening, the inclination of the screw is preferably 30 ° or less, 25 ° or less, or 20 ° or less.
　螺合ネジ部は、容器頸部外面のネジ部と螺合する。従ってこの螺合ネジ部は、自由滑動が可能な平衡ネジであることが好ましい。螺合ネジ部の条数は、容器頸部外面のネジ部の条数に応じて、例えば１～４条とすることができ、１～３条であることが好ましく、より好ましくは１条又は２条であり、更に好ましくは１条である。螺合ネジ部のネジ溝のサイズは、これと螺合する容器外面のネジ部のサイズに応じて、適宜に設定することができる。例えば、ネジ谷の高さ（引っ掛かり山の高さ）として、０．３ｍｍ以上３．０ｍｍ以下程度とすることができる。 The screwing screw part is screwed with the screw part on the outer surface of the container neck. Therefore, it is preferable that the threaded screw portion is a balanced screw capable of free sliding. The number of threads of the threaded screw portion can be, for example, 1 to 4 according to the number of threads on the outer surface of the container neck, and is preferably 1 to 3, more preferably 1 or It is 2 articles, More preferably, it is 1 article. The size of the thread groove of the threaded screw portion can be set as appropriate according to the size of the threaded portion of the outer surface of the container to be screwed therewith. For example, the height of the screw valley (the height of the catching mountain) can be about 0.3 mm or more and 3.0 mm or less.
　螺合ネジ部におけるネジ溝の断面形状としては、例えば、三角形状、半円形状、台形状等、及びこれらの形状の角部が丸まった形状等の任意の形状であることができる。 The cross-sectional shape of the thread groove in the threaded screw portion can be any shape such as, for example, a triangular shape, a semicircular shape, a trapezoidal shape, or a shape in which corners of these shapes are rounded.
　通気ネジ部は、キャップが開栓方向に緩められたときに、キャップの内部（具体的にはキャップ内部の上部の空間）に外気を導入し、該空間が減圧になることを防ぐ機能を有する。この通気ネジ部は、容器頸部外面のネジ部と螺合することが予定されていなくてもよく、或いは該ネジ部と螺合可能な態様であってもよい。通気ネジ部におけるネジ溝の断面形状は、螺合ネジ部の場合と同様であってよい。 The ventilation screw part has a function of introducing outside air into the inside of the cap (specifically, the upper space inside the cap) and preventing the space from being decompressed when the cap is loosened in the opening direction. . The ventilation screw portion may not be scheduled to be screwed with the screw portion on the outer surface of the container neck, or may be in a mode capable of being screwed with the screw portion. The cross-sectional shape of the thread groove in the ventilation screw part may be the same as that of the screw thread part.
　通気ネジ部が容器頸部外面のネジ部と螺合することが予定されていない場合、容器頸部外面のネジ部が誤って通気ネジ部と螺合することを防止するために、この通気ネジ部のネジ溝のサイズは前記螺合ネジ部のネジ溝のサイズよりも小さいことが好ましい。この場合、通気ネジ部のネジ溝のサイズは、誤導入の確実な防止を図るため、螺合ネジ部のネジ溝のサイズに対する比として、ネジ谷の幅及び深さの双方とも、６０％以下とすることが好ましく、５０％以下とすることがより好ましく、４０％以下とすることが更に好ましい。この比は一方で、外気導入の効果を確実とするため、５％以上とすることが好ましく、１０％以上とすることがより好ましく、２０％以上とすることが更に好ましい。 If the vent screw part is not scheduled to be screwed with the threaded part on the outer surface of the container neck, this vent screw is used to prevent the screw part on the outer surface of the container neck from accidentally screwing with the vent screw part. It is preferable that the size of the screw groove of the portion is smaller than the size of the screw groove of the screwing screw portion. In this case, the size of the thread groove of the ventilation screw portion is 60% or less for both the width and the depth of the screw valley as a ratio to the size of the screw groove of the screw thread portion in order to prevent erroneous introduction. It is preferable to set it as 50% or less, more preferably 40% or less. On the other hand, this ratio is preferably 5% or more, more preferably 10% or more, and further preferably 20% or more in order to ensure the effect of introducing outside air.
　通気ネジ部と容器頸部外面のネジ部との螺合を避けるためには、通気ネジ溝のサイズを小さくせずに、その入口のみを狭く設計することも考えられる。しかしこの態様は、例えば射出成型後のキャップを金型から外す工程が困難となるため、好ましくない。 In order to avoid screwing between the ventilation screw portion and the screw portion on the outer surface of the container neck, it may be possible to design only the inlet narrowly without reducing the size of the ventilation screw groove. However, this embodiment is not preferable because, for example, it becomes difficult to remove the cap after injection molding from the mold.
　通気ネジ部が容器頸部外面のネジ部と螺合可能である場合、通気ネジ部のネジ溝のサイズは螺合ネジ溝のサイズと同じものとすることができる。この場合には、通気ネジ部の条数を容器頸部外面のネジ部の条数よりも多くして、余剰のネジ溝を、外気導入機能を有するものとして機能させることとなる。 When the ventilation screw portion can be screwed with the screw portion on the outer surface of the container neck, the size of the screw groove of the ventilation screw portion can be the same as the size of the screw screw groove. In this case, the number of threads of the ventilation screw portion is made larger than the number of threads of the outer surface of the container neck, and the excess screw groove functions as having an outside air introduction function.
　具体的には例えば、
　容器頸部外面のネジ部の条数を１条として、キャップ周壁内面のネジ部の条数を２条とする場合；
　容器頸部外面のネジ部の条数を２条として、キャップ周壁内面のネジ部の条数を３条又は４条とする場合
等が挙げられる。 Specifically, for example,
When the number of threads on the outer surface of the container neck is 1, and the number of threads on the inner surface of the cap peripheral wall is 2,
For example, the number of threads on the outer surface of the container neck may be 2, and the number of threads on the inner surface of the cap peripheral wall may be 3 or 4.
　キャップ周壁内面において、上記の螺合ネジ部と通気ネジ部とは、互いに交差しないことが適切である。これらのネジ部が交差すると、螺合ネジ部の一部を寸断することになるため、締栓状態における雄ネジと雌ネジと間の摩擦が減ぜられ、密閉アセンブリの密閉信頼性を損なうおそれがある。最も好ましくは、螺合ネジ部と通気ネジ部とが平行に形成されている場合である。 It is appropriate that the screwing screw portion and the ventilation screw portion do not cross each other on the inner surface of the cap peripheral wall. If these screw parts intersect, a part of the threaded screw part will be cut off, so that friction between the male screw and female screw in the tightened state is reduced, and the sealing reliability of the sealing assembly may be impaired. There is. Most preferably, the screwing screw portion and the ventilation screw portion are formed in parallel.
　本発明の密閉アセンブリは、キャップの内部に外気を導入するための通気ネジ部を有する。従って該アセンブリは、キャップ及び容器頸部間のネジの螺合によって密閉を形成することができない。そのため、本発明の密閉アセンブリは、別途の密閉手段を有することが好ましい。 The hermetic assembly of the present invention has a ventilation screw portion for introducing outside air into the cap. Therefore, the assembly cannot form a seal by screwing the screw between the cap and the container neck. Therefore, the sealing assembly of the present invention preferably has a separate sealing means.
　上記密閉手段としては、例えば、
　キャップの基部に、該基部から突出して容器頸部のリップ部開口内に挿入されるインナーピン；
　キャップの基部に、該基部から突出して容器頸部のリップ部開口内に挿入されるインナーリング；
　キャップの基部に、該基部から突出して容器リップ部の周囲を囲い、容器リップ部のガイドとなるアウターリング；
　キャップの基部に、該基部から突出して容器頸部のリップ部頂壁と接触するコンタクトリング；
等を例示することができる。 As the sealing means, for example,
An inner pin protruding from the base and inserted into the lip opening of the container neck at the base of the cap;
An inner ring at the base of the cap that protrudes from the base and is inserted into the lip opening of the container neck;
An outer ring that protrudes from the base portion and surrounds the periphery of the container lip portion and serves as a guide for the container lip portion;
A contact ring at the base of the cap that protrudes from the base and contacts the top wall of the lip of the container neck;
Etc. can be illustrated.
　本発明の密閉アセンブリにおいては、上記の密閉手段のうち、
　インナーピン又はインナーリングと、アウターリングと、コンタクトリングと、から選択される１種以上を有するキャップであることができ、強固な密閉を要する用途においてはこれらから選択される２種以上を有するキャップであることが好ましい。 In the sealing assembly of the present invention, among the sealing means described above,
A cap having one or more types selected from an inner pin or inner ring, an outer ring, and a contact ring, and a cap having two or more types selected from these in applications that require strong sealing It is preferable that
　上記インナーピンは、容器頸部のリップ部の開口の径（口内径）が比較的小さい場合に好適に適用することができる。インナーピンが適用される口内径としては、例えば、概ね１５ｍｍ以下、１０ｍｍ以下、又は８ｍｍ以下であり、例えば１ｍｍ以上又は３ｍｍ以上である。 The inner pin can be suitably applied when the opening diameter (mouth inner diameter) of the lip portion of the container neck is relatively small. The inner diameter of the mouth to which the inner pin is applied is, for example, approximately 15 mm or less, 10 mm or less, or 8 mm or less, for example, 1 mm or more or 3 mm or more.
　インナーピンは、容器頸部の口内径と同じか、これよりもやや大きい直径を有するものであることが好ましい。具体的には、容器頸部の口内径に対して、１００％以上１０５％以下、又は１００％以上１０３％以下とすることができる。インナーピンの長さは、例えば、０．１ｍｍ以上、０．３ｍｍ以上、又は０．５ｍｍ以上とすることができ、３ｍｍ以下、２．５ｍｍ以下、又は２ｍｍ以下とすることができる。このサイズのインナーピンを用いることにより、容易かつ確実に密閉を形成することができ、好ましい。 It is preferable that the inner pin has a diameter that is the same as or slightly larger than the inner diameter of the neck of the container neck. Specifically, it can be 100% or more and 105% or less, or 100% or more and 103% or less with respect to the inner diameter of the mouth of the container neck. The length of the inner pin can be, for example, 0.1 mm or more, 0.3 mm or more, or 0.5 mm or more, and can be 3 mm or less, 2.5 mm or less, or 2 mm or less. By using an inner pin of this size, a hermetic seal can be formed easily and reliably, which is preferable.
　一方のインナーリングは、容器頸部のリップ部の口内径が比較的大きい場合に好適に適用することができる。インナーリングが適用される口内径としては、例えば、概ね５ｍｍ以上、１０ｍｍ以上、又は１５ｍｍ以上であり、例えば１００ｍｍ以下又は５０ｍｍ以下である。 One inner ring can be suitably applied when the inner diameter of the lip portion of the container neck is relatively large. The inner diameter of the mouth to which the inner ring is applied is, for example, approximately 5 mm or more, 10 mm or more, or 15 mm or more, for example, 100 mm or less or 50 mm or less.
　インナーリングの底部の外径は、容器頸部の口内径と同じか、これよりもやや大きい直径を有するものであることが好ましい。具体的には、容器頸部の口内径に対して、１００％以上１０５％以下、又は１００％以上１０３％以下とすることができる。インナーリングの底部における幅は、第１の密閉手段におけるインナーピンと同様であってよい。 The outer diameter of the bottom of the inner ring is preferably the same as or slightly larger than the mouth inner diameter of the container neck. Specifically, it can be 100% or more and 105% or less, or 100% or more and 103% or less with respect to the inner diameter of the mouth of the container neck. The width at the bottom of the inner ring may be the same as the inner pin in the first sealing means.
　インナーリングの幅は、底部から先の方まで同じであってもよく、底部から先の方に行くに従って徐々に細くなっていてもよく、或いは先端部に球根状の凸起を有する形状であってもよい。インナーリングは、キャップ基部から垂直に突出していてもよい。インナーリングのキャップ基部からの突出高さは、アウターリングよりも低い方が好ましい。 The width of the inner ring may be the same from the bottom to the tip, may be gradually narrowed from the bottom to the tip, or may have a bulbous protrusion at the tip. May be. The inner ring may protrude vertically from the cap base. The protrusion height of the inner ring from the cap base is preferably lower than that of the outer ring.
　上記アウターリングは、キャップの基部からリング状に突出して容器リップ部の周囲を囲う形状を有する。従って該密閉リングは、キャップの基部から（中空の）略円筒状の形状で突出する。アウターリングの役割は、インナーピンに容器頸部の口が挿入されるように導くガイドとなることである。従って、アウターリングの底部（キャップ基部からの生え際）の内径は、容器頸部の口外径と同じか、これよりもやや大きい直径を有するものであることが好ましい。具体的には、容器頸部の口外径に対して、１００％以上１０５％以下、又は１００％以上１０３％以下とすることができる。アウターリングの底部における幅は、例えば、０．１ｍｍ以上２ｍｍ以下とすることができる。 The outer ring has a shape that protrudes in a ring shape from the base of the cap and surrounds the periphery of the container lip. Accordingly, the sealing ring protrudes from the base of the cap in a (hollow) substantially cylindrical shape. The role of the outer ring is to serve as a guide that guides the mouth of the container neck to be inserted into the inner pin. Therefore, it is preferable that the inner diameter of the bottom part of the outer ring (the hairline from the cap base) is the same as or slightly larger than the outer diameter of the mouth of the container neck. Specifically, it can be 100% or more and 105% or less, or 100% or more and 103% or less with respect to the mouth outer diameter of the container neck. The width at the bottom of the outer ring can be, for example, 0.1 mm or more and 2 mm or less.
　アウターリングの幅は、底部から先の方まで同じであってもよく、底部から先の方に行くに従って徐々に細くなっていてもよい。アウターリングは、キャップ基部から垂直に突出していてもよいし、底部から先の方に行くに従って徐々に外側に開いて行く形状であってもよい。 The width of the outer ring may be the same from the bottom to the tip, or may gradually narrow as it goes from the bottom to the tip. The outer ring may protrude vertically from the cap base, or may have a shape that gradually opens outward as it goes from the bottom to the front.
　アウターリングのキャップ基部からの突出高さは、例えば、０．１ｍｍ以上、０．３ｍｍ以上、又は０．５ｍｍ以上とすることができ、３ｍｍ以下、２．５ｍｍ以下、又は２ｍｍ以下とすることができる。アウターリングのキャップ基部からの突出高さは、容器頸部の口をインナーピンに誘導するガイドとして機能するよう、インナーピンの突出高さよりも高くすることが好ましい。 The protruding height of the outer ring from the cap base can be, for example, 0.1 mm or more, 0.3 mm or more, or 0.5 mm or more, and can be 3 mm or less, 2.5 mm or less, or 2 mm or less. it can. The protruding height of the outer ring from the cap base is preferably higher than the protruding height of the inner pin so as to function as a guide for guiding the mouth of the container neck to the inner pin.
　上記コンタクトリングは、容器頸部のリップ部の口内径が比較的大きい場合に好適に適用することができる。コンタクトリングが適用される好ましい口内径は、インナーリングの場合と同様である。 The contact ring can be suitably applied when the inner diameter of the lip portion of the container neck is relatively large. A preferable inner diameter of the mouth to which the contact ring is applied is the same as that of the inner ring.
　コンタクトリングとは、容器頸部の口部において、リップ部の頂壁と接触（好ましくは圧接）することによって密封を形成する機能を有する。リップ部の頂壁とは、リップ部の最先端を意味し、平坦状であってもよいし、断面が例えば半円状の凸形状を有していてもよい。 The contact ring has a function of forming a seal by contacting (preferably pressing) the top wall of the lip at the mouth of the container neck. The top wall of the lip portion means the tip of the lip portion, and may be flat or may have a convex shape with a semicircular cross section, for example.
　コンタクトリングがリップ部頂壁と接触する部分の径は、容器頸部のリップ部の口内径よりも大きく、かつ該リップ部の口外径よりも小さいことが好ましい。 The diameter of the portion where the contact ring contacts the top wall of the lip is preferably larger than the inner diameter of the mouth of the lip of the container neck and smaller than the outer diameter of the mouth of the lip.
　コンタクトリングの幅は、底部から先の方まで同じであってもよく、底部から先の方に行くに従って徐々に細くなっていてもよく、或いは先端部に球根状の凸起を有する形状であってもよい。コンタクトリングは、キャップ基部から垂直に突出していてもよい。 The width of the contact ring may be the same from the bottom to the tip, may be gradually narrowed from the bottom to the tip, or may have a bulbous protrusion at the tip. May be. The contact ring may protrude vertically from the cap base.
　上述のとおり、上記の密閉手段はそれぞれを単独で使用した場合でも、効果的な密閉を形成することができる。しかしながら、より強固な密閉を要する用途においては、これらの密閉手段の２種以上を組み合わせて使用することが好ましい。具体的な組み合わせの例としては、例えば、以下の各場合を例示することができる。 As described above, the above sealing means can form an effective seal even when each is used alone. However, in applications that require stronger sealing, it is preferable to use a combination of two or more of these sealing means. As examples of specific combinations, for example, the following cases can be exemplified.
　口径が比較的小さいリップ部を有する容器頸部に対しては、例えば、
　インナーピン及びアウターリングを有するキャップ；
　インナーピン及びコンタクトリングを有するキャップ；
　インナーピン、アウターリング、及びコンタクトリングを有するキャップ；等。 For a container neck having a lip portion having a relatively small diameter, for example,
A cap having an inner pin and an outer ring;
A cap having an inner pin and a contact ring;
A cap having an inner pin, an outer ring, and a contact ring;
　口径が比較的大きいリップ部を有する容器頸部に対しては、例えば、
　インナーリング及びアウターリングを有するキャップ；
　インナーリング及びコンタクトリングを有するキャップ；
　インナーリング、アウターリング、及びコンタクトリングを有するキャップ；等。 For a container neck having a relatively large lip, for example,
A cap having an inner ring and an outer ring;
A cap having an inner ring and a contact ring;
A cap having an inner ring, an outer ring, and a contact ring;
　本発明の密閉アセンブリにおけるキャップは、基部から突出し、上記の周壁の外側を囲う外壁を更に有していてもよい。この外壁は、容器頸部のネジ部との螺合には関与せず、例えば、操作直径を大きくして握力の弱い利用者による開栓を容易化する、ユニバーサルデザインの観点等から好ましく配置される。 The cap in the hermetic assembly of the present invention may further have an outer wall that protrudes from the base and surrounds the outside of the peripheral wall. The outer wall is preferably arranged from the viewpoint of universal design, etc., which is not involved in screwing with the threaded portion of the container neck, for example, to facilitate opening by a user with a weak grip force by increasing the operation diameter. The
　この外壁の厚さ及び高さは、容器のデザインに応じて適宜に設定されてよい。例えば、０．１ｍｍ以上又は０．３ｍｍ以上、２ｍｍ以下又は１．５ｍｍ以下の厚さと、５ｍｍ以上又は１０ｍｍ以上、５０ｍｍ以下又は３０ｍｍ以下の高さと、を有することができる。 The thickness and height of the outer wall may be appropriately set according to the container design. For example, it can have a thickness of 0.1 mm or more, 0.3 mm or more, 2 mm or less, or 1.5 mm or less, and a height of 5 mm or more, 10 mm or more, 50 mm or less, or 30 mm or less.
　本発明の密閉アセンブリにおけるキャップは、任意の材料を用いて製造されてよい。該キャップは、適当な可撓性、快適な触感を示し、安価な材料から構成されることが好ましく、この観点から合成樹脂製であることがより好ましい。合成樹脂としては、例えば、ポリエチレン、ポリプロピレン等のポリオレフィン；ポリエチレンテレフタレート（ＰＥＴ）、ポリブチレンテレフタレート、ポリエチレンナフタレート、ポリブチレンナレフタレート等のポリエステル；（メタ）アクリルン酸アルキル、（メタ）アクリル酸－スチレン共重合体等のアクリル系樹脂等を挙げることができる。これらのうち、ポリオレフィンが好ましく、特に好ましくはポリプロピレンである。 The cap in the hermetic assembly of the present invention may be manufactured using any material. The cap preferably has an appropriate flexibility and a comfortable touch, and is preferably made of an inexpensive material. From this viewpoint, the cap is more preferably made of a synthetic resin. Examples of synthetic resins include polyolefins such as polyethylene and polypropylene; polyesters such as polyethylene terephthalate (PET), polybutylene terephthalate, polyethylene naphthalate, and polybutylene naphthalate; alkyl (meth) acrylate, (meth) acrylic acid- Examples thereof include acrylic resins such as styrene copolymers. Of these, polyolefin is preferable, and polypropylene is particularly preferable.
　本発明の第１の観点による密閉アセンブリにおけるキャップは、上記の材料を用いて、例えば射出成形により、容易に製造することができる。 The cap in the hermetic assembly according to the first aspect of the present invention can be easily manufactured by using, for example, injection molding using the above material.
＜容器頸部及び容器＞
　本発明の第１の観点による密閉アセンブリは、上記のキャップと、該キャップの螺合ネジ部と螺合するネジ部を外面に有する容器頸部と、から成る。容器頸部のネジ部は、頸部外面に凸設されていることが好適である。 <Container neck and container>
A hermetic assembly according to a first aspect of the present invention includes the above-described cap and a container neck portion having a screw portion screwed with a screwing screw portion of the cap on an outer surface. It is preferable that the threaded portion of the container neck is protruded from the outer surface of the neck.
　この容器頸部は容器の一部である。該容器は、前記の容器頸部、容器胴部、及びこれらを接続する容器肩部を有することができる。容器がチューブ又はパウチである場合、前記容器胴部は尻部がシールされていてもよく；容器がボトルである場合、容器胴部は尻部が閉じた状態で一体形成されていてもよい。この容器は、上記のキャップと容器頸部とから成る本発明の密閉アセンブリによって密閉される。 This container neck is part of the container. The container may have the container neck, the container body, and a container shoulder connecting them. When the container is a tube or pouch, the bottom of the container body may be sealed; when the container is a bottle, the container body may be integrally formed with the bottom closed. The container is sealed by the sealing assembly of the present invention consisting of the cap and the container neck.
　容器頸部は、その外面に、上記キャップの有する螺合ネジ部と螺合するネジ部を有する。このネジ部は、好ましくはネジ山である。容器頸部のネジ部、及びキャップにおける螺合ネジ部の双方に、互いに咬合してクリックストップを形成する係止手段を配置してもよい。 The container neck has a screw portion that is screwed with the screwing screw portion of the cap on the outer surface thereof. This thread portion is preferably a thread. Locking means that engage with each other to form a click stop may be disposed on both the threaded portion of the container neck and the threaded screw portion of the cap.
　容器頸部は、キャップと螺合して密閉を形成し、確実な密閉信頼性を発現する必要があることから、適度の硬度を有することが好ましい。好ましくは、射出成型可能な比較的硬質の樹脂から成ることが好ましく、特に好ましくは高密度ポリエチレン（ＨＤＰＥ）製の頸部である。 It is preferable that the container neck has an appropriate hardness because it needs to be screwed with the cap to form a hermetic seal and to exhibit a certain sealing reliability. Preferably, it is made of a relatively hard resin that can be injection-molded, and particularly preferably a neck made of high-density polyethylene (HDPE).
　容器胴部は、バリア性、適当な可撓性等の機能を有することが好ましいことから、例えば、合成樹脂、金属箔（特にアルミニウム箔）、金属蒸着ポリエステル樹脂（特にアルミニウム蒸着ＰＥＴ）、シリカ蒸着ポリエステル樹脂（特にシリカ蒸着ＰＥＴ）等から選択される２層以上を有するラミネート容器であることが好ましい。上記合成樹脂としてはポリオレフィン系樹脂を挙げることができる。該ポリオレフィン系樹脂としてはポリエチレン系樹脂が好ましく、具体的には例えば、低密度ポリチレン（ＬＤＰＥ）、直鎖状低密度ポリエチレン（ＬＬＤＰＥ）、中密度ポリエチレン（ＭＤＰＥ）、高密度ポリエチレン（ＨＤＰＥ）、エチレン－アクリル酸共重合体（ＥＡＡ）、エチレン－メタクリル酸共重合体（ＥＭＡ）、エチレン－エチルアクリレート共重合体（ＥＥＡ）、エチレン－メチルアクリレート共重合体（ＥＭＡ）、エチレン－酢酸ビニル共重合体（ＥＶＡ）、カルボン酸変性ポリエチレン、カルボン酸変性エチレン－酢酸ビニル共重合体、アイオノマー等、及びこれらの誘導体、並びにこれらの混合物等が挙げられる。 Since the container body preferably has functions such as barrier properties and appropriate flexibility, for example, synthetic resin, metal foil (especially aluminum foil), metal-deposited polyester resin (particularly aluminum-deposited PET), silica-deposited, etc. A laminate container having two or more layers selected from polyester resins (particularly silica-deposited PET) is preferable. Examples of the synthetic resin include polyolefin resins. The polyolefin resin is preferably a polyethylene resin, specifically, for example, low density polyethylene (LDPE), linear low density polyethylene (LLDPE), medium density polyethylene (MDPE), high density polyethylene (HDPE), ethylene. -Acrylic acid copolymer (EAA), ethylene-methacrylic acid copolymer (EMA), ethylene-ethyl acrylate copolymer (EEA), ethylene-methyl acrylate copolymer (EMA), ethylene-vinyl acetate copolymer (EVA), carboxylic acid-modified polyethylene, carboxylic acid-modified ethylene-vinyl acetate copolymer, ionomer, etc., and derivatives thereof, and mixtures thereof.
　容器がチューブ又はパウチである場合の容器胴部の尻部のシールは、公知の方法（例えばヒートシール、ホットエアー、超音波シール等）によって形成されてよい。容器がボトルである場合には、容器胴部は尻部が初めから閉じた状態で、前記キャップと一体となって、或いは前記キャップとは別個の部品として、例えばブロー成形によって得ることができる。 When the container is a tube or a pouch, the bottom seal of the container body may be formed by a known method (for example, heat sealing, hot air, ultrasonic sealing, etc.). When the container is a bottle, the container body can be obtained by, for example, blow molding, with the cap closed from the beginning, integral with the cap, or as a separate part from the cap.
　容器肩部は、特に容器がチューブ又はパウチである場合に、上記容器頸部と容器胴部とを接続する機能を有し、開栓及び再締付け時のねじりに耐える材質から成ることが好ましい。この観点から、特に好ましくは肩部をＨＤＰＥ製とすることである。容器がボトルである場合には、肩部を有さなくてもよい。 The container shoulder is preferably made of a material that has a function of connecting the container neck and the container body and resists torsion during opening and retightening, particularly when the container is a tube or a pouch. From this point of view, the shoulder is particularly preferably made of HDPE. If the container is a bottle, it does not have to have a shoulder.
＜密閉アセンブリ＞
　本発明の第１の観点による密閉アセンブリは、キャップの内部に外気を導入するための凹設ネジ部を有するから、開栓時にキャップ内部に減圧が形成されることがなく、従って、開栓時の減圧による液漏れを回避することができる。更にこの密閉アセンブリは、開栓時の減圧状態を回避するために、螺合に使用するネジ部に切れ目を形成することを要しない。従って、従来公知の密閉アセンブリと同等の開栓トルク及び締栓トルクを示すから、締栓状態で保存するとき、特に内容物が充填された容器又は使用途中で内容物が残っている容器をバッグ等に入れて持ち運ぶ際の密閉信頼性が高い。 <Sealing assembly>
Since the hermetic assembly according to the first aspect of the present invention has a recessed screw portion for introducing outside air into the cap, no decompression is formed inside the cap when the cap is opened. Liquid leakage due to the reduced pressure can be avoided. Furthermore, this sealing assembly does not require the formation of a cut in the threaded portion used for screwing in order to avoid a reduced pressure state when opening. Accordingly, since the opening torque and the closing torque are the same as those of a conventionally known hermetic assembly, when storing in a closed state, a container filled with the contents or a container with the contents remaining in use is particularly bagged. High reliability of sealing when carrying in a container.
＜第１の観点による密閉アセンブリの具体例＞
　以下、図面を参照して本発明の第１の観点におけるキャップ及び密閉アセンブリの具体例について詳説する。 <Specific example of hermetic assembly according to first aspect>
Hereinafter, specific examples of the cap and the sealing assembly according to the first aspect of the present invention will be described in detail with reference to the drawings.
　図１に本発明の第１の観点の一実施形態におけるキャップ１０の断面図を示した。 FIG. 1 shows a cross-sectional view of a cap 10 according to an embodiment of the first aspect of the present invention.
　図１のキャップ１０は、基部１１と、周壁１２と、インナーピン１５と、アウターリング１６と、外壁１７と、を有する。周壁１２は、基部１１から突出しており、その内壁に、螺合ネジ部１３及び通気ネジ部１４がそれぞれ凹設されている。これらのネジ部は、いずれも断面が略台形状の形状を有する。通気ネジ部のネジ溝の幅は螺合ネジ部のネジ溝の幅よりも狭く、通気ネジ部のネジ谷の深さは螺合ネジ部のネジ谷の深さよりも小さい。 1 has a base 11, a peripheral wall 12, an inner pin 15, an outer ring 16, and an outer wall 17. The peripheral wall 12 protrudes from the base part 11, and the screwing screw part 13 and the ventilation | gas_flowing screw part 14 are each recessedly provided by the inner wall. Each of these screw portions has a substantially trapezoidal cross section. The width of the screw groove of the ventilation screw portion is narrower than the width of the screw groove of the screwing screw portion, and the depth of the screw valley of the ventilation screw portion is smaller than the depth of the screw valley of the screwing screw portion.
　キャップ１０は、密閉手段として、基部１１の中心に突出するインナーピン１５と、基部１１から突出するアウターリング１６と、を有する。 The cap 10 has an inner pin 15 protruding from the center of the base 11 and an outer ring 16 protruding from the base 11 as sealing means.
　キャップ１０は更に、周壁１２の外側に、基部１１から突出して周壁１２を囲うように、外壁１７を有する。この外壁１７は、ネジ部を有さない。 The cap 10 further has an outer wall 17 on the outer side of the peripheral wall 12 so as to protrude from the base 11 and surround the peripheral wall 12. The outer wall 17 does not have a screw portion.
　図２は、キャップ１０と好ましく螺合する容器上部の側面図である。図２には、本発明の密閉アセンブリを構成する容器の頸部２０の他、肩部３０及び容器ボディ４０も示されている。図２に示された容器頸部２０は、リップ部２１と、頸部外面に凸設されたネジ山であるネジ部２２を有する。 FIG. 2 is a side view of the upper part of the container that is preferably screwed into the cap 10. FIG. 2 also shows a shoulder 30 and a container body 40 in addition to the container neck 20 constituting the hermetic assembly of the present invention. The container neck part 20 shown in FIG. 2 has a lip part 21 and a screw part 22 that is a thread projecting from the outer surface of the neck part.
　図３は、図１のキャップと図２の容器頸部とから成る密閉アセンブリの一実施形態を示す一部断面図である。図３は、該アセンブリが締付け状態にある場合を示し、簡潔化のために構成要素を特定する引出し線の一部が省略されている。 FIG. 3 is a partial cross-sectional view showing an embodiment of a sealing assembly including the cap of FIG. 1 and the container neck of FIG. FIG. 3 shows the assembly in a clamped state, with some of the leader lines identifying the components omitted for simplicity.
　図３を参照すると、キャップ１０における螺合ネジ部１３は、容器頸部２０外面のネジ部と螺合してこの密閉アセンブリを締め付けていることが分かる。一方、キャップ１０の通気ネジ部１４は他のネジと螺合しておらず、従ってその凹設部により規定されるネジ軌道はそのまま空間として残っているから、キャップ１０内外の空気の流通が可能である。このことにより、アセンブリ開栓時にキャップ内へ減圧印加されることによる内容物の漏洩を防止することができる。 Referring to FIG. 3, it can be seen that the screwing screw portion 13 in the cap 10 is screwed with the screw portion on the outer surface of the container neck portion 20 to tighten the sealing assembly. On the other hand, the ventilation screw portion 14 of the cap 10 is not screwed with other screws, and therefore the screw trajectory defined by the recessed portion remains as a space so that air can flow inside and outside the cap 10. It is. This can prevent leakage of contents caused by applying a reduced pressure into the cap when the assembly is opened.
　従って図３のアセンブリは、キャップと容器頸部とのネジの螺合によって密閉を形成することができないから、別途の密閉手段を有する。図１～図３を総合的に参照すると、図３のアセンブリの締付け状態において、キャップ１０の基部から突出するインナーピン１５が容器リップ部の開口内に挿入され、合わせて基部からリング状に突出するアウターリング１６が容器リップ部の周囲を囲っていることが分かる。本発明の密閉アセンブリでは、これらインナーピン１５及びアウターリング１６と、容器頸部のリップ部との共働により、密閉が形成されるのである。 Therefore, the assembly of FIG. 3 has a separate sealing means because a seal cannot be formed by screwing the cap and the container neck. Referring to FIGS. 1 to 3, in the tightened state of the assembly of FIG. 3, the inner pin 15 protruding from the base of the cap 10 is inserted into the opening of the container lip portion, and protrudes in a ring shape from the base. It can be seen that the outer ring 16 that surrounds the container lip. In the hermetic assembly of the present invention, the inner pin 15 and outer ring 16 and the lip portion of the container neck part cooperate to form a hermetic seal.
＜＜第２の観点＞＞
＜キャップ＞
　本発明の第２の観点におけるキャップは、容器頸部外面のネジ部に螺合させて該容器を密閉するための容器用キャップであり、基部と、該基部から突出する周壁とを有する。そして、上記の周壁が、その内面に、容器頸部外面のネジ部と螺合するためのネジ部は有するが、外気を導入するための凹設ネジ部を有さないこと以外は、上記第１の観点におけるキャップと同様のものとすることができる。 << Second Viewpoint >>
<Cap>
The cap according to the second aspect of the present invention is a container cap for sealing the container by screwing into a threaded portion on the outer surface of the container neck, and has a base and a peripheral wall protruding from the base. The above-mentioned peripheral wall has a screw portion for screwing with a screw portion on the outer surface of the container neck on the inner surface, but has no concave screw portion for introducing outside air. It can be the same as the cap in the first aspect.
＜容器頸部＞
　本発明の第２の観点における容器頸部は、その外面に上記キャップの周壁内面に存在するネジ部と螺合するためのネジ部、及びキャップの上部に外気を導入するための凹設ネジ部を有する。これら螺合のためのネジ部及び凹設ネジ部については、本発明の第１の観点による容器密閉アセンブリにおけるキャップの有する螺合ネジ部及び通気ネジ部と同様の態様とすることができ、或いはこれに当業者による適宜の変更を加えた態様とすることができる。 <Container neck>
The container neck in the second aspect of the present invention has a screw portion for screwing with a screw portion existing on the inner surface of the peripheral wall of the cap, and a concave screw portion for introducing outside air into the upper portion of the cap. Have The screw portion and the recessed screw portion for screwing can be in the same mode as the screwing screw portion and the ventilation screw portion of the cap in the container sealing assembly according to the first aspect of the present invention, or It can be set as the aspect which added the appropriate change by those skilled in the art to this.
＜密閉アセンブリ＞
　本発明の第２の観点による密閉アセンブリは、上記キャップと上記の容器頸部とから成る。その他の態様及び利点は、本発明の第１の観点の場合と同様であるか、或いはこれに準じて理解することができる。 <Sealing assembly>
A sealing assembly according to a second aspect of the present invention comprises the cap and the container neck. Other aspects and advantages are the same as or similar to those of the first aspect of the present invention.
＜＜第３の観点＞＞
＜密閉アセンブリ＞
　本発明の第３の観点における密閉アセンブリは、上記第１の観点におけるキャップと、上記第２の観点における容器頸部と、から成る。該第３の観点による密閉アセンブリの具体的実施態様及び利点は、本発明の第１の観点の場合と同様であるか、或いはこれに準じて理解することができる。 << Third viewpoint >>
<Sealing assembly>
The hermetic assembly according to the third aspect of the present invention comprises the cap according to the first aspect and the container neck according to the second aspect. Specific embodiments and advantages of the sealing assembly according to the third aspect are the same as or equivalent to those of the first aspect of the present invention.
　以下においては、容器としてチューブ容器を例に挙げ、本発明の効果を検証した。以下の図面を参照してキャップ及びチューブ容器頸部の形状を特定する。図４～９における数字の単位は「ｍｍ」である。 In the following, a tube container was taken as an example of the container, and the effects of the present invention were verified. The shape of the cap and the tube container neck is specified with reference to the following drawings. The unit of the numbers in FIGS. 4 to 9 is “mm”.
　チューブ容器の製造に用いた積層体を構成する各層の略称は、それぞれ、以下の材料を意味する。
　　ＬＬＤＰＥ：線状低密度ポリエチレン、ペレットで供給されたものを溶融押出法により成膜
　　ＬＤＰＥフィルム：低密度ポリエチレンフィルム
　　ＥＡＡ：エチレン－アクリル酸共重合体樹脂、ペレットで供給されたものを溶融押出法により成膜
　　ＡＬ箔：アルミニウム箔
　　ＥＭＡＡ：エチレン－メタクリル酸共重合体樹脂、ペレットで供給されたものを溶融押出法により成膜
　　ＰＥＴフィルム：ポリエチレンテレフタレートフィルム
　　ドライラミネート接着剤：２液硬化型ウレタン系接着剤
　　ＬＬＤＰＥフィルム：線状低密度ポリエチレンフィルム The abbreviations of the layers constituting the laminate used for manufacturing the tube container mean the following materials, respectively.
LLDPE: linear low density polyethylene, film supplied by pellets by melt extrusion process LDPE film: low density polyethylene film EAA: ethylene-acrylic acid copolymer resin, pellets supplied by melt extrusion process Film formation AL foil: Aluminum foil EMAA: Ethylene-methacrylic acid copolymer resin, pellets supplied by melt extrusion PET film: Polyethylene terephthalate film Dry laminate adhesive: Two-component curable urethane adhesive LLDPE film: Linear low density polyethylene film
＜実施例１＞
（１）チューブ容器の製造
　アルミニウム箔を含む積層体「ＬＬＤＰＥ／ＬＤＰＥフィルム／ＥＡＡ／ＡＬ箔／ＥＭＡＡ／ＰＥＴフィルム／ドライラミネート接着剤／ＬＬＤＰＥフィルム」（８層を有する積層体、合計厚さ４００μｍ）をカットし、カット面の端部を重ね合わせて高周波シールして筒状にチューブボディを形成した。このチューブボディをマンドレルに挿入し、１７０℃～２２０℃の範囲内に加熱したＨＤＰＥ樹脂を、チューブボディの上方からドーナツ状に押出してマンドレルヘッド（雄型）上に載せた。このマンドレルヘッドを、チューブ容器頸部及びその外面のネジ部に対応する雌型形状を有する金型に押圧し、冷却後にチューブボディをマンドレルから取り外すことにより、口内径１．２ｍｍφのリップを有する直径２５．２ｍｍφの丸型ロングノズル形状のチューブ容器を得た。 <Example 1>
(1) Manufacture of tube container Laminate containing aluminum foil “LLDPE / LDPE film / EAA / AL foil / EMAA / PET film / dry laminate adhesive / LLDPE film” (laminate with 8 layers, total thickness 400 μm) The tube body was cut, and the ends of the cut surfaces were overlapped and sealed with high frequency to form a tube body in a cylindrical shape. The tube body was inserted into a mandrel, and the HDPE resin heated in a range of 170 ° C. to 220 ° C. was extruded from above the tube body into a donut shape and placed on a mandrel head (male). The diameter of the mandrel head having a lip with an inner diameter of 1.2 mmφ is pressed by pressing the mandrel head against a mold having a female shape corresponding to the neck portion of the tube container and the threaded portion of the outer surface thereof, and removing the tube body from the mandrel after cooling. A tube container having a round long nozzle shape of 25.2 mmφ was obtained.
　ここで成形したチューブ容器の頸部形状の詳細を図７及び図９に示した。実施例１におけるチューブ容器頸部のネジ部は、条数：１条、ネジ山の幅１．８ｍｍ、及びネジ山の高さ：０．８ｍｍのネジである。 Details of the neck shape of the tube container formed here are shown in FIGS. The threaded portion of the tube container neck in Example 1 is a screw having a number of strips of 1, a thread width of 1.8 mm, and a thread height of 0.8 mm.
（２）キャップの製造
　図４及び図６に示した形状に相当する金型を準備し、ＰＰ樹脂を射出成型することにより、実施例１のキャップを製造した。このキャップの周壁内径は９．９ｍｍφ、周壁の高さは１９．０ｍｍである。該キャップは、密閉手段として、インナーピン、アウターリング、及びコンタクトリングを有する。射出成形には電動式射出成型機を使用した。冷却温度は２０℃とし、金型の開閉動作により、成形品をランナーから分離した。 (2) Manufacture of Cap A cap of Example 1 was manufactured by preparing a mold corresponding to the shape shown in FIGS. 4 and 6 and injection-molding PP resin. The inner diameter of the cap is 9.9 mmφ, and the height of the peripheral wall is 19.0 mm. The cap has an inner pin, an outer ring, and a contact ring as sealing means. An electric injection molding machine was used for injection molding. The cooling temperature was 20 ° C., and the molded product was separated from the runner by opening and closing the mold.
　実施例１におけるキャップの螺合ネジ部及び通気ネジ部の詳細は、それぞれ、以下のとおりである。
［螺合ネジ部］
　　条数：１条
　　ネジ溝の幅：１．８ｍｍ
　　ネジ溝の深さ：０．８ｍｍ
［通気ネジ部］
　　条数：１条
　　ネジ溝の幅：０．４ｍｍ
　　ネジ溝の深さ：０．６ｍｍ Details of the threaded screw portion and the vent screw portion of the cap in the first embodiment are as follows.
[Screw screw part]
Number of strips: 1 strip Thread groove width: 1.8mm
Thread groove depth: 0.8mm
[Ventilation screw part]
Number of strips: 1 strip Thread groove width: 0.4 mm
Thread groove depth: 0.6mm
（３）内容物の漏洩試験
　チューブ容器のボディ部に、液状粘性体（スキンケア用乳液、粘度：約１０，０００ｃｐ）を充填し、キャップを締め付けて密閉した。そして、キャップを下にした状態で開栓して内容物の漏洩有無を観察し、以下の基準で評価した。評価はｎ数を５として行った。評価結果は表１に示した。
　　内容物漏洩がインナーピン側面まででおさまった場合：「○」（耐漏洩性良好）
　　内容物がインナーピン側面を越えて漏洩した場合：「×」（耐漏洩性不良） (3) Leakage test of contents The body of the tube container was filled with a liquid viscous material (emulsion for skin care, viscosity: about 10,000 cp) and sealed with a cap. Then, the cap was opened with the cap down, and the contents were observed for leakage and evaluated according to the following criteria. Evaluation was performed with n number being 5. The evaluation results are shown in Table 1.
When the content leakage is stopped to the side of the inner pin: “○” (good leakage resistance)
When the content leaks beyond the side of the inner pin: “×” (poor leakage resistance)
（４）開栓強度試験（開栓トルクの測定）
　チューブ容器のボディ部にキャップを締め付けて密閉した。そしてキャップを開栓するときのトルク値を、（株）東日製作所製トルクメーター「２－ＴＭ１０」を用いて測定した。評価はｎ数を５として行った。評価結果は表２に示した。 (4) Opening strength test (Measurement of opening torque)
A cap was tightened on the body of the tube container to seal it. The torque value when the cap was opened was measured using a torque meter “2-TM10” manufactured by Tohnichi Corporation. Evaluation was performed with n number being 5. The evaluation results are shown in Table 2.
＜比較例１＞
　キャップの形状を図５及び図６に示したとおりに変更した他は実施例１と同様の操作により、通気ネジ部を有さないキャップを製造した。このキャップは、密閉手段として、インナーピン、アウターリング、及びコンタクトリングを有する。該キャップを用いた他は実施例１と同様にして評価を行った。評価結果は表１及び表２に示した。 <Comparative Example 1>
A cap having no ventilation screw portion was manufactured in the same manner as in Example 1 except that the shape of the cap was changed as shown in FIGS. This cap has an inner pin, an outer ring, and a contact ring as sealing means. Evaluation was performed in the same manner as in Example 1 except that the cap was used. The evaluation results are shown in Tables 1 and 2.
＜比較例２＞
　チューブ容器頸部の形状を図８及び図９に示したとおりに変更した他は実施例１と同様の操作により、頸部のネジ部に縦設された外気導入用のスリットを有するチューブ容器を製造した。このチューブ容器を用いた他は比較例１と同様にして評価を行った。評価結果は表１及び表２に示した。 <Comparative Example 2>
Except for changing the shape of the neck portion of the tube container as shown in FIG. 8 and FIG. 9, a tube container having a slit for introducing outside air vertically provided on the screw portion of the neck portion is obtained by the same operation as in Example 1. Manufactured. Evaluation was performed in the same manner as in Comparative Example 1 except that this tube container was used. The evaluation results are shown in Tables 1 and 2.
Figure JPOXMLDOC01-appb-T000001
Figure JPOXMLDOC01-appb-T000001
Figure JPOXMLDOC01-appb-T000002
Figure JPOXMLDOC01-appb-T000002
　表１の結果から、外気導入溝を設けることによって内容物の漏洩が抑制されることが確認できた。 From the results in Table 1, it was confirmed that leakage of contents was suppressed by providing an outside air introduction groove.
　表２の結果から、比較例２のアセンブリのように、頸部のネジ部に縦設された外気導入用のスリットを有する場合には、該スリットの影響によって締栓状態におけるネジ山とネジ溝との間の摩擦が減ぜられているために、開栓トルクが実施例１よりも劣ることが示された。 From the results in Table 2, when there is a slit for introducing outside air vertically formed in the screw portion of the neck as in the assembly of Comparative Example 2, the thread and screw groove in the plugged state are affected by the slit. It has been shown that the opening torque is inferior to that of Example 1 due to the reduced friction between the two.
　表１及び表２の結果から分かるように、本発明の一例である実施例１のアセンブリは、内容物の漏洩が抑制され、開栓時のトルクも、外気導入溝のないものと同等のレベルを確保できるものである。 As can be seen from the results of Tables 1 and 2, the assembly of Example 1, which is an example of the present invention, suppresses leakage of the contents, and the torque at the time of opening is the same level as that without the outside air introduction groove. Can be secured.
　１０　　キャップ
　１１　　基部
　１２　　周壁
　１３　　螺合ネジ部
　１４　　通気ネジ部
　１５　　インナーピン
　１６　　アウターリング
　１７　　外壁
　２０　　容器頸部
　２１　　リップ部
　２２　　ネジ部
　３０　　容器肩部
　４０　　容器ボディ DESCRIPTION OF SYMBOLS 10 Cap 11 Base 12 Perimeter wall 13 Screwing screw part 14 Venting screw part 15 Inner pin 16 Outer ring 17 Outer wall 20 Container neck part 21 Lip part 22 Screw part 30 Container shoulder part 40 Container body

Claims (9)

  1. 　外面にネジ部を有する容器頸部と、
    　基部及び該基部から突出する周壁を有し、前記周壁の内面に前記容器頸部外面のネジ部と螺合するためのネジ部を有し、前記容器頸部に螺合させて容器を密閉するための容器用キャップと、
    から成る容器密閉アセンブリであって、
    　前記容器頸部の外面及び前記キャップの周壁の内面のうちの少なくとも一方に、前記キャップの内部に外気を導入するための凹設ネジ部を更に有し、該凹設ネジ部と螺合のためのネジ部とが互いに交差しない、前記アセンブリ。     A container neck having a threaded portion on the outer surface;
    A base and a peripheral wall projecting from the base; a screw part for screwing with a screw part of the outer surface of the container neck on the inner surface of the peripheral wall; and screwing into the container neck to seal the container A container cap for
    A container closure assembly comprising:
    At least one of the outer surface of the container neck and the inner surface of the peripheral wall of the cap further includes a recessed screw portion for introducing outside air into the cap, and for screwing with the recessed screw portion. The assembly of claim 1, wherein the threaded portion of the assembly does not cross each other.
  2. 　前記前記凹設ネジ部のネジ溝の幅が、前記螺合のためのネジ部のネジ溝の幅と同じであるか、或いはこれよりも小さい、請求項１に記載のアセンブリ。 The assembly according to claim 1, wherein a width of a screw groove of the recessed screw portion is the same as or smaller than a width of a screw groove of the screw portion for screwing.
  3. 　容器頸部外面のネジ部に螺合させて容器を密閉するための容器用キャップであって、
    　基部と、該基部から突出する周壁とを有し、
    　前記周壁の内面に、前記容器頸部外面のネジ部と螺合するためのネジ部と、前記キャップの内部に外気を導入するための凹設ネジ部と、を有し、前記凹設ネジ部のネジ溝の幅は前記螺合のためのネジ部のネジ溝の幅よりも小さく、そして
    　前記螺合のためのネジ部と前記凹設ネジ部とが互いに交差しないことを特徴とする、前記キャップ。     A container cap for sealing the container by screwing into the threaded portion of the outer surface of the container neck,
    A base and a peripheral wall protruding from the base;
    A screw portion for screwing with a screw portion of the outer surface of the container neck portion on the inner surface of the peripheral wall; and a concave screw portion for introducing outside air into the cap. The width of the screw groove is smaller than the width of the screw groove of the screw part for screwing, and the screw part for screwing and the recessed screw part do not intersect each other, cap.
  4. 　前記キャップの基部が、該基部から突出して容器頸部のリップ部開口内に挿入されるインナーピンと、該基部から突出して容器頸部のリップ部の周囲を囲うアウターリングと、を有する、請求項３に記載のキャップ。 The base of the cap has an inner pin protruding from the base and inserted into a lip opening of the container neck, and an outer ring protruding from the base and surrounding the lip of the container neck. 3. The cap according to 3.
  5. 　前記キャップの基部が、該基部から突出して容器頸部のリップ部開口内に挿入されるインナーリングと、該基部から突出して容器頸部のリップ部の周囲を囲うアウターリングと、を有する、請求項３に記載のキャップ。 The base of the cap has an inner ring protruding from the base and inserted into the lip opening of the container neck, and an outer ring protruding from the base and surrounding the periphery of the lip of the container neck. Item 4. The cap according to Item 3.
  6. 　前記基部から突出し、前記周壁の外側を囲う外壁を更に有する、請求項３～５のいずれか一項に記載のキャップ。 The cap according to any one of claims 3 to 5, further comprising an outer wall protruding from the base and surrounding the outer side of the peripheral wall.
  7. 　容器用キャップ周壁内面のネジ部に螺合させて容器を密閉するための容器頸部であって、
    　外面に、前記キャップ周壁内面のネジ部と螺合するためのネジ部と、前記キャップの内部に外気を導入するための凹設ネジ部と、を有し、前記凹設ネジ部のネジ溝の幅は前記螺合のためのネジ部のネジ溝の幅よりも小さく、そして
    　前記螺合のためのネジ部と前記凹設ネジ部とが互いに交差しないことを特徴とする、前記容器頸部。     A container neck for sealing the container by screwing into a threaded portion on the inner surface of the container cap peripheral wall,
    On the outer surface, there are a screw portion for screwing with a screw portion on the inner surface of the cap peripheral wall, and a recessed screw portion for introducing outside air into the cap, and a screw groove of the recessed screw portion The container neck, wherein a width is smaller than a width of a screw groove of a screw part for screwing, and the screw part for screwing and the recessed screw part do not intersect each other.
  8. 　請求項１に記載のアセンブリによって密閉されることを特徴とする、容器。 A container sealed by the assembly according to claim 1.
  9. 　チューブ、ボトル、又はパウチである、請求項８に記載の容器。 The container according to claim 8, which is a tube, a bottle, or a pouch.
PCT/JP2017/019620 2016-06-09 2017-05-25 Container sealing assembly WO2017212941A1 (en)

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JPS5660627U (en) * 1979-10-17 1981-05-23
JPH046053A (en) * 1990-04-10 1992-01-10 Japan Crown Cork Co Ltd Combination of container and lid
JPH08301315A (en) * 1995-05-02 1996-11-19 Kao Corp Container
JPH1159707A (en) * 1997-08-12 1999-03-02 Yoshino Kogyosho Co Ltd Extruding container
JP2000168808A (en) * 1998-12-07 2000-06-20 Sanshin Plastic Kk Threaded bottle

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Publication number Priority date Publication date Assignee Title
JPS51156517U (en) * 1975-06-06 1976-12-13
JPS5711756U (en) * 1980-06-25 1982-01-21
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Publication number Priority date Publication date Assignee Title
JPS5660627U (en) * 1979-10-17 1981-05-23
JPH046053A (en) * 1990-04-10 1992-01-10 Japan Crown Cork Co Ltd Combination of container and lid
JPH08301315A (en) * 1995-05-02 1996-11-19 Kao Corp Container
JPH1159707A (en) * 1997-08-12 1999-03-02 Yoshino Kogyosho Co Ltd Extruding container
JP2000168808A (en) * 1998-12-07 2000-06-20 Sanshin Plastic Kk Threaded bottle

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