WO2016017178A1 - Bouchon de bec verseur et récipient d'emballage - Google Patents

Bouchon de bec verseur et récipient d'emballage Download PDF

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Publication number
WO2016017178A1
WO2016017178A1 PCT/JP2015/003851 JP2015003851W WO2016017178A1 WO 2016017178 A1 WO2016017178 A1 WO 2016017178A1 JP 2015003851 W JP2015003851 W JP 2015003851W WO 2016017178 A1 WO2016017178 A1 WO 2016017178A1
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WO
WIPO (PCT)
Prior art keywords
side wall
cap
spout
screw
plug body
Prior art date
Application number
PCT/JP2015/003851
Other languages
English (en)
Japanese (ja)
Inventor
和田　潔
関　武邦
藤原　伸数
Original Assignee
凸版印刷株式会社
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
Priority claimed from JP2015145234A external-priority patent/JP6226921B2/ja
Priority claimed from JP2015145235A external-priority patent/JP6278931B2/ja
Priority claimed from JP2015145233A external-priority patent/JP2016033057A/ja
Priority claimed from JP2015145236A external-priority patent/JP2016069083A/ja
Application filed by 凸版印刷株式会社 filed Critical 凸版印刷株式会社
Priority to KR1020177002669A priority Critical patent/KR102482736B1/ko
Priority to SG11201700559UA priority patent/SG11201700559UA/en
Priority to US15/328,988 priority patent/US10308402B2/en
Priority to CN201580040366.4A priority patent/CN106573706B/zh
Publication of WO2016017178A1 publication Critical patent/WO2016017178A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D5/00—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper
    • B65D5/42—Details of containers or of foldable or erectable container blanks
    • B65D5/72—Contents-dispensing means
    • B65D5/74—Spouts
    • 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

Definitions

  • the present invention relates to a spout stopper and a packaging container.
  • a spout is provided with a spout formed on the spout of the container body of beverages, liquid seasonings, cosmetics, etc., and the spout is closed by a cap formed with a screw that can be screwed onto the spout.
  • the technology to do is known.
  • Such a spout stopper and cap can be capped repeatedly by re-engaging the screw portions even after the cap is once removed and opened.
  • Patent Document 1 discloses a cap body in which a contact ring and an inner ring are provided on the inner surface of the cap body on the sealing side so as to engage with the tip of a spout main body (outlet plug) of the spout to enhance the sealing performance. It is disclosed.
  • Patent Document 2 a spout having a spout that is less likely to sag when the content liquid is poured out and has a good liquid drainage by forming the tip of the spout widened at the same angle as the inclination angle of the paper container inclined plate. It is disclosed.
  • an ultrasonic welding method is often used in which ultrasonic vibration is applied to the flange provided in the spout stopper to weld it.
  • Patent Document 3 by providing a meat stealing part (annular watermark part) in the vicinity of the inner edge of the flange surface, vibration generated during ultrasonic welding causes a half-cut part (blocking plate) of a partition wall (blocking plate) that closes the spout stopper (A spout stopper (a pull stopper with a pull ring) is disclosed that suppresses transmission to an annular thin-walled fragile line and prevents cracking.
  • Patent Document 4 in the spout stopper provided with the above-described meat stealing portion, protrusions provided at equal intervals in the circumferential direction of the side wall in order to hold the container body between the flanges are deformed by the energy of ultrasonic vibration.
  • a technique has been disclosed in which ribs are provided at positions corresponding to the protrusions on the inner surface of the meat stealing portion to disperse and absorb ultrasonic vibration energy.
  • the spout material when the spout is attached to the container body by welding, a low-density polyethylene resin is used as the spout material, and a harder material such as polypropylene resin or high-density polyethylene resin is used as the cap material. Many. When such a material is used, if the contact ring is formed on the cap, the contact trace of the contact ring tends to remain at the contact portion of the spout with the contact ring. In particular, the contact trace of the contact ring remaining on the spout remains as a circumferential V-shaped groove on the upper end of the spout, which causes deterioration of the drainage performance of the content liquid to be poured out.
  • the present invention has been made in view of the above-described problems, and provides a spout stopper that prevents deterioration in sealing performance with a cap without deteriorating the liquid drainage performance of the cap body, and a packaging container using the same.
  • the purpose is to do.
  • LDPE low-density polyethylene resin
  • L-LDPE low-density polyethylene resin
  • the cap material is made of a polypropylene resin or a high-density polyethylene resin that has higher rigidity than the low-density polyethylene resin, thereby improving the sealing performance between the spout and the cap. Can do.
  • the rigidity of the spout is higher than the rigidity of the cap, when excessive torque is applied to both, the spout with low rigidity will fall in the inner circumferential direction due to the load received from the inner screw of the cap, and the inner screw will become the screw of the spout.
  • An “overrun” that goes over the department may occur. When overrun occurs, screwing with the cap becomes incomplete, and the content liquid is likely to leak. Further, a part of the outer screw of the spout is shaved by the screw portion of the cap due to overrun, so that play (gap) is generated in the screwing, and the sealing performance of the spout stopper may be lowered.
  • the present invention has been made in view of the above-described problems, and uses a spout plug that can suppress the occurrence of overrun even when excessive torque is applied to the cap and the plug body.
  • the purpose is to provide a packaging container.
  • the screw part of the cap tends to come into contact with the anti-spilling shape at the tip of the spout before coming into contact with the screw part of the spout. For this reason, even if the user tries to screw the cap onto the spout stopper so that the center axes of the cap and the spout are aligned, the cap's posture is changed because the screw portion of the cap contacts the dripping prevention shape. The cap may not be properly screwed into the spout, resulting in poor screwing.
  • This invention is made in view of the above-mentioned subject, and it aims at providing the spout stopper which can prevent generation
  • Patent Documents 3 and 4 it has been proposed to provide a meat stealing part and a rib in order to suppress deformation of each part of the spout stopper at the time of ultrasonic welding. It has not been fully studied.
  • This invention is made in view of the above-mentioned subject, and it aims at providing the spout stopper which can suppress suitably the deformation
  • One aspect of the present invention for solving the above problems includes a cap body having a cylindrical side wall and a cap mounted from the upper end side which is one end of the side wall. A protrusion protruding outward is formed, and the top surface of the upper end of the side wall is a spout stopper that makes surface contact with a predetermined contact surface inside the cap over the entire circumference in a state where the cap is mounted on the side wall.
  • a plug body including a cylindrical side wall having an outer thread formed on the outer peripheral surface, and a cylindrical side wall having an inner thread formed on the inner peripheral surface.
  • a cap screwed from the upper end side which is one end of the side wall of the plug body, and provided at the lower end of the side wall of the plug body so as to extend outward from the lower edge of the side wall of the plug body.
  • the disc-shaped flange portion is formed, and the external screw extends from the connection position with the flange portion on the side wall of the plug body along the screwing shaft direction by a third of the distance between the connection position and the upper edge. It is a spout stopper formed in a range from 1 to 2/3.
  • a plug body having a cylindrical side wall and a cap screwed from the upper end side, which is one end of the side wall.
  • the cap has an outer screw portion and a guide portion, which is an upper end side of the outer screw portion, and is not formed with an outer screw, and the inner peripheral surface of the cap is an inner screw that is screwed with the outer screw.
  • the distance between the formation start position, which is the upper end of the inner screw, and the formation end position, which is the lower end, along the screwing shaft direction is the distance between the upper edge of the side wall and the outer screw. It is a spout stopper smaller than the guide part length which is the distance to the formation start position on the upper end side.
  • Another aspect of the present invention for solving the above problems includes a cylindrical side wall, a partition wall that closes the inside of the side wall, a half cut is formed on the outer periphery, and extends outward from the lower edge of the side wall.
  • a disc-shaped flange portion provided on the surface opposite to the side wall of the flange portion, a groove-shaped meat stealing portion provided concentrically with the side wall, and a plurality of ribs provided on the inner surface of the meat stealing portion
  • Each of the plurality of ribs is a spout stopper whose interval between adjacent ribs is 0.5 mm or greater and 5.0 mm or less along the circumferential direction of the meat stealing portion.
  • another aspect of the present invention is a packaging container including a container body and the above-described spout stopper attached to the container body.
  • the spout plug according to the present invention can prevent deterioration of the sealing performance with the cap without deteriorating the drainage performance of the plug main body, and when excessive torque is applied to the cap and the plug main body. Even so, the occurrence of overrun can be suppressed, the screwing failure of the screw portions of the cap and the plug body can be prevented, and the deformation of each portion due to ultrasonic welding can be suppressed. According to the present invention, a packaging container using such a spout stopper can be provided.
  • FIG. 1 is a cross-sectional view showing a spout stopper according to an embodiment of the present invention.
  • FIG. 2 is a perspective view showing the packaging container according to the embodiment of the present invention.
  • FIG. 3 is a cross-sectional view showing a spout stopper according to a modification of the present invention.
  • FIG. 4 is a cross-sectional view showing the spout plug according to the embodiment of the present invention.
  • FIG. 5 is a cross-sectional view showing the spout stopper according to the embodiment of the present invention.
  • FIG. 6 is a cross-sectional view showing a state in which a cap is screwed onto the spout stopper according to the embodiment of the present invention.
  • FIG. 1 is a cross-sectional view showing a spout stopper according to an embodiment of the present invention.
  • FIG. 2 is a perspective view showing the packaging container according to the embodiment of the present invention.
  • FIG. 3 is a cross-sectional view showing
  • FIG. 7 is a cross-sectional view showing the spout plug according to the embodiment of the present invention.
  • FIG. 8 is a bottom view, an enlarged view, and a partial cross-sectional view showing a spout stopper according to an embodiment of the present invention.
  • FIG. 9 is a bottom view, an enlarged view, and a partial cross-sectional view showing a spout stopper according to a modification of the embodiment of the present invention.
  • FIG. 1 shows a cross-sectional view of a spout plug 3 including a plug main body 1 and a cap 2.
  • FIG. 2 the perspective view of the packaging container 5 containing the spout stopper 3 which consists of the stopper main body 1 and the cap 2, and the container main body 4 is shown.
  • screw means that the threads of the cap and the side wall of the cap body are engaged with each other, and these are fitted (attached) by rotating them relatively in the circumferential direction.
  • the “screw shaft” is an imaginary line that is on the center of the circumference formed by the thread and extends in the direction in which the cap moves when the cap and the plug body are screwed together.
  • the spout plug 3 includes a plug body 1 and a cap 2.
  • the plug body 1 has a cylindrical side wall 11.
  • a top surface 109 is formed on the side wall 11 on the upper end side which is one end.
  • the cap 2 includes a cylindrical side wall 21, a top plate 24, and a contact surface 27 formed perpendicular to the screwing shaft. The cap 2 is attached from the upper end side of the side wall 11 of the plug body 1.
  • a protrusion 15 protruding outward from the side wall 11 is formed at the upper end edge of the side wall 11, and the top surface 109 of the upper end of the side wall 11 is in a state where the cap 2 is attached to the side wall 11 of the plug body 1. Surface contact is made with the contact surface 27 of the cap 2.
  • the protrusion 15 is formed so as to protrude outward from the upper end edge of the side wall 11 of the plug body 1 to improve the liquid drainage performance when the content liquid is poured out. It is possible to prevent the plug body 1 from getting dirty and dirty.
  • the upper end of the side wall 11 of the plug body 1 refers to the upper side of the side wall 11 in FIG.
  • a disc-shaped flange portion 16 extending outward is formed on the lower end edge of the side wall 11 of the plug body 1. As shown in FIG. 2, the flange portion 16 is formed between the container body 4 and the spout stopper 3 when the packaging container 5 including the container body 4 and the spout stopper 3 attached to the container body 4 is manufactured. It becomes a joint location. Ultrasonic welding can be used as the bonding method.
  • a cylindrical first outer diameter portion 13 and a cylindrical second outer diameter portion 14 having an outer diameter larger than this are provided below the protrusion 15 provided on the upper end of the side wall 11 of the plug body 1. And have. On the outer peripheral surface 17 of the second outer diameter portion 14, an outer screw 12 that can be screwed with an inner screw 22 of the cap 2 described later is formed.
  • the cap 2 includes a cylindrical side wall 21 having an inner screw 22 formed on the inner peripheral surface 23, and a top plate 24 that covers the side wall 21 from the upper end side.
  • the side wall 21 and the top plate 24 are connected by a thick portion 26 provided from the upper end side of the side wall 21 to the outer periphery of the top plate 24.
  • a cylindrical inner ring 25 is formed on the inner side of the cap 2 so that one end thereof is in contact with the top plate 24 and is formed adjacent to the thick portion 26.
  • a contact surface 27 perpendicular to the screwing shaft is formed at the lower end of the thick portion 26.
  • the height of the contact surface 27 is such that the top surface 109 of the side wall 11 is in surface contact over the entire circumference when the cap 2 is mounted on the side wall 11 of the plug body 1.
  • the side wall 11 is formed to be elastically deformed by receiving a compressive load.
  • the outer peripheral surface of the inner ring 25 is formed so as to be in contact with the inner peripheral surface 19 of the side wall 11 in a state in which a part thereof protrudes over the entire periphery and the cap 2 is mounted on the side wall 11 of the plug body 1. .
  • the cap 2 when the cap 2 is attached to the side wall 11 of the spigot main body 1, the cap 2 is rotated in the circumferential direction with respect to the side wall 11 after the cap 2 is covered from the upper end of the side wall 11.
  • the outer screw 12 and the inner screw 22 are screwed together.
  • the top surface 109 at the upper end of the side wall 11 comes into surface contact with the contact surface 27 of the cap 2 as described above, and the side wall 11 of the plug body 1 is elastically deformed.
  • the outer peripheral surface of the inner ring 25 is in contact with the inner peripheral surface 19 of the side wall 11.
  • the contact area with the contact surface 27 can be ensured larger than before, and the sealing performance can be improved.
  • the contact surface 27 is formed so that the side wall 11 is elastically deformed. Therefore, the top surface 109 is in surface contact with the contact surface 27 with a high contact pressure. Thus, the sealing performance can be improved.
  • the side wall 11 of the spigot body 1 receives a downward force from the contact surface 27 on the top surface 109 and the protrusion 15 as shown by an arrow A in FIG.
  • the outer ring 25 receives an outward force as indicated by an arrow B in FIG. Therefore, the side wall 11 receives a force obliquely downward as indicated by an arrow P in FIG. 1B due to the resultant force of these forces, and the side wall 11 is elastically deformed in the direction in which it is spread.
  • the side wall 11 of the plug body 1 comes into contact with the cap 2 so as to press the top surface 109 against the contact surface 27 and the inner peripheral surface 19 against the outer peripheral surface of the inner ring 25 by restoring force. For this reason, the sealing performance by the plug main body 1 can be further improved. This force is within the range of elastic deformation, and the side wall 11 immediately returns to its original shape after the cap 2 is opened.
  • the contact pressure with respect to the contact surface 27 of the side wall 11 of the plug body 1 is increased, the torque necessary for the rotation of the cap 2 (hereinafter referred to as opening torque) is increased, and the cap 2 can be prevented from loosening. it can.
  • opening torque the torque necessary for the rotation of the cap 2
  • the cap 2 can be prevented from loosening. it can.
  • the lead angle of the screw is formed large, the number of rotations until the screwing is completed can be reduced.
  • the cap is easy to loosen. Since the cap can be prevented from loosening by applying the cap body, it is possible to provide a cap body that is difficult to loosen the cap while reducing the number of rotations until the screwing is completed.
  • the rigidity of the cap 2 is preferably higher than the rigidity of the side wall 11 of the plug body 1.
  • low-density polyethylene resin LDPE, L-LDPE
  • polypropylene resin, high-density polyethylene resin, or the like can be used for the material of the cap 2.
  • FIG. 3 shows a modification of this embodiment.
  • the lower end of the thick portion 26 is formed in parallel with the top plate 24 to form the contact surface 27.
  • the part may be a contact surface.
  • the mode of contact between the side wall of the spout main body and the cap is not limited to the above-described embodiment and its modifications, and there is a contact mark that the side wall contacts the cap over the entire circumference and leads to deterioration of the content liquid drainage performance. It goes without saying that the position and shape can be arbitrarily selected as long as they do not remain on the side wall.
  • the shape of the upper end of the side wall of the spigot body can be implemented in various ways depending on the design of the protrusions for preventing dripping, for example.
  • the upper surface curved surface or curved surface or the chamfered portion near the outer side that continues from the uppermost end, not the exact uppermost end, such as the top surface of the upper end of the side wall of the plug body.
  • Flat surface or, if a protrusion is provided, the outer end of the protrusion may contact a chamfered portion (curved surface or flat surface) that is not a strictly horizontal surface near the upper end of the inner peripheral surface of the side wall of the cap. Good.
  • the external screw 12 on the side wall 11 of the plug body 1 and the internal screw 22 of the cap 2 may be a single thread or a multiple thread.
  • a screw cap type cap body that is threaded on the cap 2 and the side wall 11 of the cap body 1 and is screwed together is used, but the top surface 109 of the side wall 11 and the cap 2 Any kind of plug body may be used as long as the plug body can be sealed by surface contact with the contact surface 27.
  • the present invention can also be applied to a stopper cap in which a stopper main body for stoppering a container mouth portion and a cap for closing the stopper main body are connected by a hinge.
  • FIG. 4 shows a cross-sectional view (a) of the spout stopper 3 in a state where the cap 2 is screwed, and an enlarged view (b) thereof.
  • the plug body 1 is formed at the lower end of the side wall 11 and has a partition wall 104 that separates the upper end side and the lower end side inside the side wall 11.
  • the upper end of the side wall 11 refers to one end on the side to which the cap 2 is screwed (upper side in FIG. 4).
  • the partition wall 104 includes a pull ring 103.
  • the user of the spout stopper 3 can open the side wall 11 by connecting the upper end side and the lower end side thereof by pulling out the partition wall 104 using the pull ring 103.
  • an abutting portion 28 which is a region where the upper end portion of the side wall 11 of the plug body 1 is in surface contact over the entire circumference is provided, and higher sealing performance is obtained.
  • the abutting portion 28 only needs to abut the upper end portion of the side wall 11 or the vicinity thereof in the screwed state over the entire circumference, and in the cap 2, the outer peripheral surface of the inner ring 25, the portion near the upper end of the inner peripheral surface of the side wall 21, You may provide in any of the top
  • the range (L2) in which the external screw 12 is formed extends from the connection position with the flange portion 16 of the side wall 11 along the screwing shaft direction of the plug body 1. This is a range from 1/3 to 2/3 of the distance (L1) between the connection position and the upper edge.
  • the connection position with the flange part 16 of the side wall 11 is a position of the upper surface of the flange part 16, and the height of the upper surface of the part which opposes the lower end of the side wall 21 of the cap 2 is shown in FIG. When it is higher than the height of the outer upper surface, it means the position of the upper surface of the portion facing the lower end of the side wall 21, which is the higher portion.
  • the lower end position where the external screw 12 is formed may not be strictly the connection position with the flange portion 16 of the side wall 11.
  • the outer screw 12 that does not engage with the inner screw 22 may not be formed.
  • the lower end position of the outer screw 12 is about one pitch of the screw thread from the connection position with the flange portion 16. It may be upward.
  • the overrun in which the outer screw 12 and the inner screw 22 get over each other is likely to occur when the inner screw 22 is pushed inward when the rigidity of the cap body 1 is lower than the rigidity of the cap 2, and conversely high. Such a case is likely to occur when the cap 2 is pushed outward.
  • the rigidity of the plug body 1 and the cap 2 may be higher than the rigidity of the material used for the side wall 11 of the plug body 1.
  • a polypropylene resin or a high density polyethylene resin can be used for the material of the cap 2
  • a low density polyethylene resin can be used for the side wall 11 of the spigot body 1.
  • the bending elastic modulus of the material of the cap 2 is, for example, 1000 MPa to 1500 MPa, and the bending elastic modulus of the material of the side wall 11 of the plug body 1 is, for example, 100 MPa to 200 MPa. If the bending elastic modulus of the material of the cap 2 is less than 1000 MPa, the cap 2 is easily deformed. Therefore, when an excessive rotational load is applied to the cap 2, the diameter of the inner screw 22 expands, and the inner screw 22 becomes the outer screw 12. Overrun is likely to occur. On the other hand, when the pressure is higher than 1500 MPa, the inner ring 25 is hardly elastically deformed and creep-deformed, so that the sealing performance is lowered.
  • the inner screw 22 pushes the side wall 11 of the plug body 1 inward and the inner screw 22 is removed. Overrun is likely to occur over the screw 12.
  • it is larger than 200 MPa, it is difficult to be deformed and strength is generated, and it becomes difficult to pull out and open the partition wall 104 using the pull ring 103.
  • the external screw 12 in a range from a connection position with the flange portion 16 of the side wall 11 to a distance of 1/3 to 2/3 of the distance (L1) between the connection position and the upper edge, That is, by providing in a range including a portion near the lower portion of the side wall 11 whose rigidity is increased by the flange portion 16 and the partition wall 104, the side wall 11 is deformed inward even when the outer screw 12 is pushed by the inner screw 22. It is possible to make it difficult to generate overrun.
  • the cap 2 When the range in which the external screw 12 is formed is less than one third of the distance (L1) between the connection position of the side wall 11 and the flange portion 16 of the side wall 11 and the upper edge of the side wall 11, the cap 2 The inner screw 22 is engaged only at the lower end portion of the cap 2 whose diameter is likely to expand, and the number of turns of the outer screw 12 is reduced, so that sufficient engagement is difficult to obtain. Further, when the range in which the external screw 12 is formed is greater than two thirds of the distance (L1) between the connection position of the side wall 11 and the flange portion 16 of the side wall 11 and the upper end edge of the side wall 11, the side wall 11.
  • the portion where the external screw 12 is not formed is shortened, and when the cap 2 is inserted into the plug body 1, the cap 2 does not function as a guide for aligning the rotating shaft of the cap 2 with the screwing shaft of the screw. It becomes difficult to properly engage the screw.
  • the plug body 1 manufactured by injection molding may be provided so that the taper is widened from the upper end to the lower end of the side wall 11 in order to improve the removal from the mold. For this reason, the thickness of the side wall 11 is larger at the lower end than the upper end, and the rigidity of the side wall 11 is larger at the lower end side. Therefore, when the taper is provided, the effect of suppressing the occurrence of overrun can be obtained even by the taper by forming the external screw 12 of the plug body 1 in the above-described range.
  • the cap 2 may be provided with a taper whose diameter increases from the upper end toward the lower end.
  • the range where the external screw 12 is formed is at least one third of the distance (L1) between the connection position of the side wall 11 and the flange portion 16 of the side wall 11 and the upper end edge of the side wall 11. Sufficiently engages with the screw and suppresses overrun.
  • an area where the external screw 12 is not formed increases on the upper end side of the side wall 11.
  • the region serves as a guide when the cap 2 is fitted, and the cap 2 is easily screwed and screwed along the screwing shaft. Further, even if the content liquid adheres to the area, it is easy to wipe it off.
  • FIG. 5 shows a cross-sectional view (a) of the spout stopper 1 in a state where the cap 2 is screwed, and an enlarged view (b) thereof.
  • the plug body 1 has a guide portion 113 that is an area on the upper end side of the external screw 12 and is not formed with an external screw.
  • the distance (L3) is formed smaller than the length (L4) of the guide portion 113, which is the distance from the upper end edge of the side wall 11 of the plug body 1 to the outer screw portion formation start position on the upper end side of the outer screw 12. .
  • FIG. 6 is a cross-sectional view showing how the cap 2 is screwed onto the side wall 11 of the spigot body 1.
  • the user puts the cap 2 on the side wall 11 of the plug body 1 from the upper end ((a) in FIG. 6).
  • the posture of the cap 2 may be inclined with respect to the screwing shaft direction due to contact between the protruding portion 15 and the inner screw 22 or the like.
  • the user starts to insert the cap 2 in the screwing axis direction ((b) of FIG. 6).
  • the inner screw 22 and the outer screw 12 are not in contact with each other.
  • the inner screw 22 faces the guide portion 113, when the inclination amount of the cap 2 is larger than a predetermined amount, the inner screw 22 contacts the guide portion 113 to receive resistance, and the insertion progresses.
  • the inclination amount of the cap 2 is gradually reduced.
  • the guide portion 113 may have a portion whose outer diameter increases toward the outer screw 12 on the lower end side from the protrusion portion 15.
  • the guide portion 113 is formed on the first outer diameter portion 13 formed on the lower end side of the projection portion 15, on the lower end side of the first outer diameter portion 13 and on the upper end side of the outer screw 12, You may have the 2nd outer diameter part 14 whose outer diameter is larger than the outer diameter part 13 of one.
  • the lower end of the cap 2 passes through the second outer diameter portion 14 having a larger outer diameter after passing through the first outer diameter portion 13, so that the lower end of the cap 2 is started when the cap 2 starts to be inserted. Since the distance between the first outer diameter portion 13 and the first outer diameter portion 13 is large, the insertion can be facilitated. During the subsequent insertion, the distance between the lower end of the cap 2 and the second outer diameter portion 14 becomes small. The amount of inclination of can be reduced smoothly.
  • the user continues to insert the cap 2 to a position where the inner peripheral surface 23 of the side wall 21 of the cap 2 faces the top of the external thread 12 of the side wall 11 of the plug body 1 ((c) of FIG. 6). ). Since the inclination of the cap 2 is reduced, the insertion proceeds smoothly. Even when the inclination is not completely eliminated, when the inner peripheral surface 23 passes through the top of the thread of the external screw 12, it abuts on the top of the thread and receives resistance. At almost the same time, the top of the inner thread 22 contacts the outer peripheral surface 17 of the second outer diameter portion 14 and receives resistance. As a result, the amount of inclination of the cap 2 is further reduced as the insertion proceeds.
  • the user continues to insert the cap 2 until the lower end side of the inner screw 22 is in contact with the upper end side of the outer screw 12 ((d) in FIG. 6). Thereby, the inner screw 22 and the outer screw 12 come into contact with each other. At this stage, the inclination of the cap 2 with respect to the side wall 11 is eliminated. For this reason, when the user rotates the cap 2, the cap 2 and the side wall 11 of the plug body 1 can be easily screwed together without causing poor screwing.
  • the distance (L3) between the formation start position that is the upper end of the inner screw 22 and the formation end position that is the lower end is outside the upper edge of the side wall 11 of the plug body 1. It is smaller than the guide portion length (L4) which is the distance to the formation start position on the upper end side of the screw 12. Therefore, the cap 2 from when the lower end of the cap 2 passes near the upper end of the side wall 11 of the plug body 1 until the inner screw 22 of the cap 2 contacts the outer screw 12 of the side wall 11 of the plug body 1.
  • the insertion distance (L4 or more) can be made longer than the moving distance (about L3) of the cap 2 as the subsequent screwing progresses.
  • the inner screw 22 of the cap 2 and the outer screw 12 of the side wall 11 of the plug body 1 can be engaged. Further, since the insertion distance is long, when the projection 15 and the inner screw 22 come into contact with each other at the start of insertion, the user erroneously determines that the outer screw 12 and the inner screw 22 are in contact with each other, and the cap 2 It is possible to prevent rotation from starting and screwing to fail.
  • the thread portion is formed by a multi-threaded screw
  • a plurality of screw threads start to be engaged at the same time during the screwing.
  • the allowable value of the inclination amount of the cap for preventing the occurrence of screwing failure is smaller than that of the single-threaded screw. Therefore, the present invention provides a particularly remarkable effect when used for a spout stopper in which a multi-threaded screw is formed.
  • the cap can be rectified, so that the restriction on the shape of the upper end of the side wall is reduced.
  • the protrusion amount of the protrusion for preventing dripping can be increased within the range of the cap inner diameter, and the outer diameter of the upper end of the side wall can be made larger than the outer diameter of the outer screw.
  • FIG. 7 sectional drawing of the plug main body 1 is shown.
  • 8A is a bottom view of the plug body 1
  • FIG. 8B is an enlarged view of the rib 108
  • FIG. 8C is a cross-sectional view of the rib 108 along the line BB ′ (FIG. 2B).
  • the cross section shown in FIG. 7 is a vertical cross section along the line A-A ′ shown in FIG.
  • the plug body 1 is provided with a cylindrical side wall 11, a partition wall 104 that closes the inside of the side wall 11, and a half cut 141 is formed on the outer periphery, and extends outward from the lower end edge of the side wall 11.
  • the disc-shaped flange portion 16, the groove-shaped meat stealing portion 18 provided concentrically with the side wall 11 on the surface opposite to the side wall 11 of the flange portion 16, and the inner surface of the meat stealing portion 18 are provided.
  • the lower end of the side wall 11 refers to the lower side of the sheet of FIG.
  • three projecting portions 119 projecting outward from the side wall 11 are formed equally on the circumference. .
  • the number of protrusions 119 may be more than three.
  • the partition wall 104 is connected to the side wall 11 through a half cut 141 in which the outer peripheral wall thickness is formed in an annular shape.
  • a pull ring 103 is connected to the partition wall 104 via a support column. The user of the spigot body 1 pulls the pull ring 103 upward, pulls out the partition wall 104 broken along the half cut 141 from the side wall 11, and opens the upper end side and the lower end side of the side wall 11 to communicate with each other. Can do.
  • the flange portion 16 is formed between the container body 4 and the spout stopper 3 when the packaging container 5 including the container body 4 and the spout stopper 3 attached to the container body 4 is manufactured. It becomes a joint location. Ultrasonic welding can be used as the bonding method.
  • the side wall 11 of the stopper body 1 is inserted into the opening of the container body 4 from the inner surface side, and as shown in FIG. Is applied to the inner surface of the container body 4.
  • the plug body 1 is temporarily fastened to the container body 4 by sandwiching the peripheral portion of the opening of the container body 4 between the protruding portion 119 and the flange portion 16.
  • an anvil and an ultrasonic horn both not shown
  • inserted into the inside (inner side) of the container body 4 are directed onto the container body 4 overlapping the flange portion 16 to generate ultrasonic vibrations.
  • the flange portion 16 are welded. The vibration generated at this time is transmitted from the flange portion 16 through the side wall 11 to the partition wall 104, but part of the vibration is absorbed by the meat stealing portion 18.
  • the meat stealing portion 18 is a groove provided concentrically on the outer periphery of the side wall 11 on the surface opposite to the side wall 11 of the flange portion 16.
  • the cross section of the meat stealing portion 18 is an inverted U-shape (dome shape) having a strong resistance to ultrasonic vibration and a rounded top surface.
  • the meat stealing portion 18 suppresses (disperses) the propagation of ultrasonic vibration to the partition wall 104, thereby preventing the half cut 141 of the partition wall 104 from cracking.
  • ribs 108 are provided side by side on the inner peripheral surface of the meat stealing portion 18.
  • the length L5 of each of the plurality of ribs 108 may be 0.3 mm or more along the circumferential direction of the meat stealing portion 18, If it is 0.5 mm or more, the mold can be easily produced, and it is still preferable.
  • L5 is preferably 1.5 mm or less.
  • interval L6 between the adjacent ribs 108 is in the range of 0.5 mm or more and 5.0 mm or less.
  • the energy of ultrasonic vibration is absorbed and dispersed to a certain extent by the ribs 108, co-vibration is suppressed in the vicinity of the flange portion 16 and the meat stealing portion 18 of the side wall 11, and uneven concentration of energy is eliminated. As a result, it can suppress that the flange part 16 and the side wall 11 deform
  • the entire circumference of the meat stealing portion 18 is divided into 24 by 24 ribs 108.
  • the number of divisions is 6 or more and 30 or less by 6 or more and 30 or less ribs. It is preferable.
  • the spout stopper 1 capable of suppressing deformation of each part due to ultrasonic welding and the packaging container 5 using the same. Furthermore, production efficiency can be improved by increasing the vibration energy at the time of ultrasonic welding or shortening the vibration cycle. Further, the cost can be reduced by reducing the thickness of the half cut 141.
  • the shape of the meat stealing part 18 is not restricted to the example shown in FIG. 9A is a bottom view of the plug body 1 according to a modification, FIG. 9B is an enlarged view of the rib 108, and FIG. 9C is the rib 108 along the line BB ′ (see FIG. 9B). ) Shows a cross-sectional view cut in the circumferential direction.
  • the cross-sectional shape of the meat stealing portion 18 along the line AA ′ has a U-shaped round shape as shown in FIG. 7, but is similar to the example shown in FIG. Further, it may have a linear shape composed of a taper and a substantially flat top surface.
  • present invention is not limited to the above-described embodiment.
  • present invention can also be implemented as an outlet plug and a packaging container equipped with these.
  • Example 1-1 As Example 1-1, the plug body 1 according to the above-described embodiment shown in FIG. 1 in which the protrusion 15 was formed on the upper edge of the side wall 11 of the plug body 1 was used.
  • Reference Example 1-1 As Reference Example 1-1, a plug body in which a shape corresponding to the protrusion 15 of the plug body 1 was not formed was used. Others were the same as the plug body 1.
  • Example 1-1 Samples of Example 1-1 and Reference Example 1-1 were prepared. Immediately after setting (attaching the spout stopper to the container body), immediately after filling the content liquid (3 days after setting, 70 ° C.), 1 day after filling The opening torque (N ⁇ cm) after 7 days after filling and 14 days after filling was measured. The test results are shown in Table 1.
  • the plug body according to Reference Example 1-1 has a tendency to decrease the opening torque after filling.
  • the plug body 1 according to the example does not show a significant decrease in the opening torque even after 14 days from filling. From this result, it is possible that the plug body 1 according to Example 1-1 can maintain a state in which the cap is less likely to loosen compared to the plug body according to Reference Example 1-1 for a longer period of time. It was confirmed that the sealing performance was higher.
  • Example 2-1 of the present invention is the spout plug 1 according to the above-described embodiment whose sectional view is shown in FIG.
  • the external screw 12 is formed in a range from a connection position with the flange portion 16 to a height of 60% of the distance between the connection position and the upper end edge.
  • the cap 2 was made of polypropylene having a bending elastic modulus of 1470 MPa
  • the plug body 1 was made of low density polyethylene having a bending elastic modulus of 120 MPa.
  • Example 2-2 In Example 2, the formation range of the external screw 12 is changed in Example 2-1, and the range from the connection position with the flange portion 16 to a height of 58.7% of the distance between the connection position and the upper end edge is set. Formed.
  • the above-mentioned L1 was 12.70 mm and L2 was 7.45 mm.
  • Example 2-3 In Example 2-3, the formation range of the external screw 12 is changed in Example 2-1, and the range from the connection position with the flange portion 16 to a height of 55% of the distance between the connection position and the upper end edge is set. Formed.
  • the above-mentioned L1 was 14.34 mm and L2 was 7.89 mm.
  • Reference Example 2-1 changes the formation range of the external screw 12 in Example 2-1 to a range from the connection position with the flange portion 16 to a height of 70% of the distance between the connection position and the upper edge. Formed.
  • Reference Example 2-2 In Reference Example 2-2, the formation range of the external screw 12 was changed in Example 2-1, and the range from the connection position with the flange portion 16 to a height of 75% of the distance between the connection position and the upper end edge was changed. Formed.
  • Examples 3-1 to 3-9 are the spout plug 1 according to the above-described embodiment whose sectional view is shown in FIG. 5A, and the above-described L3 and L4 are L3 ⁇ L4.
  • L3> L4 is set instead of L3 ⁇ L4.
  • Examples 3-1, 3-2, 3-4, 3-5, 3-7, 3-8 and Reference Examples 3-1, 3-2, D1 and D2 described above are set to D1 ⁇ D2.
  • Examples 3-3, 3-6, and 3-9 D1> D2.
  • the guide portion is provided with a portion whose outer diameter increases toward the lower end, and Examples 3-2, 3-3, 3 and 3 are provided. ⁇ 5, 3-6, 3-8, 3-9 and Reference Example 3-2 were not provided with a portion having an increased outer diameter.
  • the present invention can be used for plug bodies of various packaging containers such as paper packaging containers, plastic bottles, bottles, and flexible packaging containers.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Closures For Containers (AREA)

Abstract

L'invention concerne : un bouchon de bec verseur qui empêche la diminution de l'efficacité d'étanchéité entre un corps de bouchon et un capuchon sans provoquer la dégradation de l'efficacité d'arrêt de liquide du corps de bouchon; un récipient d'emballage utilisant le bouchon de bec verseur. Un bouchon de bec verseur comporte : un corps de bouchon qui possède une paroi latérale cylindrique; un capuchon qui est monté sur le corps de bouchon depuis une première extrémité, en particulier une extrémité supérieure, de la paroi latérale. Une partie de saillie, qui fait saillie vers l'extérieur de la paroi latérale, est formée au niveau d'un bord supérieur de la paroi latérale, et une surface supérieure de l'extrémité supérieure de la paroi latérale est en contact de surface le long de la totalité de la circonférence avec une surface de contact prescrite, à l'intérieur du capuchon, dans un état dans lequel le capuchon a été ajusté sur la paroi latérale.
PCT/JP2015/003851 2014-07-30 2015-07-30 Bouchon de bec verseur et récipient d'emballage WO2016017178A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
KR1020177002669A KR102482736B1 (ko) 2014-07-30 2015-07-30 주출구 마개 및 포장 용기
SG11201700559UA SG11201700559UA (en) 2014-07-30 2015-07-30 Spout stopper and packaging container
US15/328,988 US10308402B2 (en) 2014-07-30 2015-07-30 Spout stopper and packaging container
CN201580040366.4A CN106573706B (zh) 2014-07-30 2015-07-30 排出口栓以及包装容器

Applications Claiming Priority (16)

Application Number Priority Date Filing Date Title
JP2014155136 2014-07-30
JP2014155137 2014-07-30
JP2014-155136 2014-07-30
JP2014-155137 2014-07-30
JP2014169413 2014-08-22
JP2014-169413 2014-08-22
JP2014201214 2014-09-30
JP2014-201214 2014-09-30
JP2015145234A JP6226921B2 (ja) 2014-07-30 2015-07-22 注出口栓及び包装容器
JP2015145235A JP6278931B2 (ja) 2014-08-22 2015-07-22 注出口栓及び包装容器
JP2015-145235 2015-07-22
JP2015-145233 2015-07-22
JP2015145233A JP2016033057A (ja) 2014-07-30 2015-07-22 注出口栓及び包装容器
JP2015145236A JP2016069083A (ja) 2014-09-30 2015-07-22 注出口栓及び包装容器
JP2015-145236 2015-07-22
JP2015-145234 2015-07-22

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3666678A4 (fr) * 2017-08-10 2020-08-19 Toppan Printing Co., Ltd. Bouchon de bec verseur et récipient de conditionnement pourvu d'un bouchon de bec verseur
US11414242B2 (en) 2017-08-10 2022-08-16 Toppan Printing Co., Ltd. Spout assembly and packaging container having the spout assembly

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Publication number Priority date Publication date Assignee Title
JPS5041950U (fr) * 1973-08-09 1975-04-28
US5388731A (en) * 1993-05-04 1995-02-14 Continental Plastics, Inc. Cap and dispensing fitment combination wherein the cap has retaining means engaging the fitment
JPH10157731A (ja) * 1996-11-26 1998-06-16 Dainippon Printing Co Ltd 液体紙容器の注出口組合わせ体
JPH10167297A (ja) * 1996-12-11 1998-06-23 Banyu Pharmaceut Co Ltd 中栓、キャップ並びに中栓とキャップの組合せ体
JPH11171233A (ja) * 1997-12-17 1999-06-29 Dainippon Printing Co Ltd 液体容器用注出口
JP2004067101A (ja) * 2002-08-01 2004-03-04 Toppan Printing Co Ltd プルリング付キャップ
JP2004149164A (ja) * 2002-10-31 2004-05-27 Dainippon Printing Co Ltd キャップ
JP2011105383A (ja) * 2009-11-20 2011-06-02 Toppan Printing Co Ltd 注出口栓および包装容器
WO2011078085A1 (fr) * 2009-12-22 2011-06-30 日本クラウンコルク株式会社 Capuchon d'ouverture en resine synthetique
JP2012245997A (ja) * 2011-05-26 2012-12-13 Cemedine Co Ltd キャップ付チューブ容器及びその製造方法
JP2014019447A (ja) * 2012-07-12 2014-02-03 Toppan Printing Co Ltd 口栓

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5041950U (fr) * 1973-08-09 1975-04-28
US5388731A (en) * 1993-05-04 1995-02-14 Continental Plastics, Inc. Cap and dispensing fitment combination wherein the cap has retaining means engaging the fitment
JPH10157731A (ja) * 1996-11-26 1998-06-16 Dainippon Printing Co Ltd 液体紙容器の注出口組合わせ体
JPH10167297A (ja) * 1996-12-11 1998-06-23 Banyu Pharmaceut Co Ltd 中栓、キャップ並びに中栓とキャップの組合せ体
JPH11171233A (ja) * 1997-12-17 1999-06-29 Dainippon Printing Co Ltd 液体容器用注出口
JP2004067101A (ja) * 2002-08-01 2004-03-04 Toppan Printing Co Ltd プルリング付キャップ
JP2004149164A (ja) * 2002-10-31 2004-05-27 Dainippon Printing Co Ltd キャップ
JP2011105383A (ja) * 2009-11-20 2011-06-02 Toppan Printing Co Ltd 注出口栓および包装容器
WO2011078085A1 (fr) * 2009-12-22 2011-06-30 日本クラウンコルク株式会社 Capuchon d'ouverture en resine synthetique
JP2012245997A (ja) * 2011-05-26 2012-12-13 Cemedine Co Ltd キャップ付チューブ容器及びその製造方法
JP2014019447A (ja) * 2012-07-12 2014-02-03 Toppan Printing Co Ltd 口栓

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3666678A4 (fr) * 2017-08-10 2020-08-19 Toppan Printing Co., Ltd. Bouchon de bec verseur et récipient de conditionnement pourvu d'un bouchon de bec verseur
US11414242B2 (en) 2017-08-10 2022-08-16 Toppan Printing Co., Ltd. Spout assembly and packaging container having the spout assembly

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