EP2738112B1 - Drip preventing container - Google Patents

Drip preventing container Download PDF

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Publication number
EP2738112B1
EP2738112B1 EP12818230.0A EP12818230A EP2738112B1 EP 2738112 B1 EP2738112 B1 EP 2738112B1 EP 12818230 A EP12818230 A EP 12818230A EP 2738112 B1 EP2738112 B1 EP 2738112B1
Authority
EP
European Patent Office
Prior art keywords
recessed portion
container
liquid
mouth portion
horizontally recessed
Prior art date
Legal status (The legal status 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 status listed.)
Not-in-force
Application number
EP12818230.0A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2738112A1 (en
EP2738112A4 (en
Inventor
Toshirou WASHIZAKI
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toyo Seikan Group Holdings Ltd
Original Assignee
Toyo Seikan Group Holdings Ltd
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 Toyo Seikan Group Holdings Ltd filed Critical Toyo Seikan Group Holdings Ltd
Publication of EP2738112A1 publication Critical patent/EP2738112A1/en
Publication of EP2738112A4 publication Critical patent/EP2738112A4/en
Application granted granted Critical
Publication of EP2738112B1 publication Critical patent/EP2738112B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B65D1/00—Containers having bodies formed in one piece, e.g. by casting metallic material, by moulding plastics, by blowing vitreous material, by throwing ceramic material, by moulding pulped fibrous material, by deep-drawing operations performed on sheet material
    • B65D1/02—Bottles or similar containers with necks or like restricted apertures, designed for pouring contents
    • B65D1/0223—Bottles or similar containers with necks or like restricted apertures, designed for pouring contents characterised by shape
    • B65D1/023—Neck construction
    • B65D1/0246—Closure retaining means, e.g. beads, screw-threads
    • 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
    • B65D23/00—Details of bottles or jars not otherwise provided for
    • B65D23/06—Integral drip catchers or drip-preventing means
    • 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
    • B65D1/00—Containers having bodies formed in one piece, e.g. by casting metallic material, by moulding plastics, by blowing vitreous material, by throwing ceramic material, by moulding pulped fibrous material, by deep-drawing operations performed on sheet material
    • B65D1/02—Bottles or similar containers with necks or like restricted apertures, designed for pouring contents
    • B65D1/0223—Bottles or similar containers with necks or like restricted apertures, designed for pouring contents characterised by shape
    • B65D1/023—Neck construction

Definitions

  • This invention relates to a container having a mouth portion forming, on the outer surface thereof, a screw thread for fastening a cap, and, specifically, to a container for containing liquids such as beverages and liquid seasonings.
  • the containers can be classified into plastic containers, glass containers, metal containers and the like containers depending on their materials.
  • the containers formed by using any material that have now been widely used are having a mouth portion with which a cap engages by screw. Owing to their excellent sealing capability, these containers have been widely used for containing various kinds of liquids such as beverages and liquid seasonings.
  • the containers containing liquids are, without exception, accompanied by a problem of liquid dripping. Therefore, a contrivance becomes necessary so that, when the liquid contained in the container is poured out through the mouth portion, the liquid that is poured out will not drip onto the exterior along the outer wall surface of the mouth portion of the container.
  • a variety of proposals have been made concerning the containers for effectively preventing the liquid from dripping. However, many of them are to form a water-repellent coating on the inner and outer surfaces of the mouth portion of the containers. For instance, a patent document 1 proposes forming a coating of tin oxide or titanium oxide on the mouth portion of the containers. A patent document 2 proposes forming a coating on the mouth portion of the containers by firing a silicone oil.
  • patent document 3 discloses a mouth of a container according to the preamble of appended claim 1 for flowing materials, in particular a glass bottle, having a peripheral groove provided in the outer limiting surface.
  • Patent Documents
  • Forming a water-repellent coating on the mouth portion of the containers is effective in preventing the dripping of liquid as is done by the above prior arts.
  • the coating must be formed by using a special material so as to cover the mouth portion of the containers involving problems such as an increase in the cost and clumsy operation for forming the coating.
  • the screw thread for fastening the cap is formed on the outer circumferential surface of the mouth portion of the container, the screw thread extends to nearly the upper end of the mouth portion of the container. Therefore, the upper end and its vicinity of the mouth portion of the container become uneven making it further difficult to form the coating and causing the thickness of the coating to vary.
  • the upper end of the screw thread is formed at a low position, then it is allowed to increase the area of the flat side wall surface continuous to the upper end of the mouth portion of the container and to easily form the coating causing, however, the mouth portion of the container and the height of the cap to become unnecessary large, which, therefore, is not desirable.
  • an object of the present invention to provide a container having a mouth portion forming, on the outer circumferential surface thereof, a screw thread for fastening a cap without forming a coating that covers the mouth portion, and effectively preventing the liquid contained therein from dripping along the outer circumferential surface of the mouth portion when the liquid contained therein is poured out from the mouth portion.
  • the container of the present invention has an annular or arcuate horizontally recessed portion formed in the outer circumferential surface of the mouth portion between the upper end of the screw thread and the upper end of the mouth portion.
  • the angle ⁇ (hereinafter often angle ⁇ of intersection) of the upper wall surface of the horizontally recessed portion relative to the vertical direction is set to be 90 degrees to 150 degrees, i.e., set to an angle close to right angle. This makes it possible to effectively prevent the liquid content from dripping along the outer circumferential surface of the mouth portion when the liquid content is being poured out through the mouth portion of the container.
  • the horizontally recessed portion having the angle ⁇ of intersection that is set as described above can be easily formed by suitably selecting a mechanical means such as forming by using a metal mold or a cutting work depending on the kinds of the container materials. Therefore, the working operation is very easy as compared to forming the coating by using a special material effectively avoiding an increase in the cost, too.
  • the bottle has a mouth portion generally designated at 1 at its upper portion.
  • the lower part of the mouth portion 1 stretches to a shoulder portion 3 that curves outward.
  • the shoulder portion 3 stretches to a body portion 5, the lower end of the body portion 5 being closed with a bottom portion 7.
  • a screw thread 10 is formed on the outer circumferential surface of the mouth portion 1 and with which a cap engages by screw.
  • a circumferential protuberance 11 is formed under the screw thread 10.
  • a TE band may be provided at the lower end of the cap that is fitted by screw. Engagement of the TE band with the circumferential protuberance 11 creates evidence of not still tampered. Namely, if the cap is opened, the TE band remains on the container side being separated away from the cap letting general consumers to know that the cap was once opened.
  • a support ring 13 of a large diameter is formed at the lowermost par of the mouth portion 1 of the container.
  • the container can be held and carried by utilizing the support ring 13.
  • annular or arcuate horizontally recessed portion 17 is formed between the upper end 10a of the screw thread 10 and the upper end 15 of the container (bottle). That is, a side wall surface 19 stretches down in the vertical direction from the outer circumferential edge of the upper end 15 of the mouth portion, and is continuous, at a point X of intersection, to an upper wall surface 17a of the horizontally recessed portion 17.
  • the upper wall surface 17a of the horizontally recessed portion 17 has an angle ⁇ of 90 to 150 degrees and, particularly preferably, 90 to 120 degrees relative to the vertical direction.
  • the angle ⁇ lying within the above range, when the container is tilted to pour out the liquid contained therein, the liquid may flow down to the side wall surface 19 from the outer circumferential edge of the upper end 15 of the mouth portion as shown in Fig. 3 . In this case, however, the liquid is cut at the portion (point of intersection) X where the side wall surface 19 and the upper wall surface 17a of the horizontally recessed portion 17 are joined together and at where the force that pushes the liquid against the wall becomes zero.
  • the liquid separates away from the container wall and falls down separating away from the mouth portion 1 of the container.
  • the liquid drips most at the start of pouring out the liquid in a state where the container is nearly standing upright or, concretely, at the start or at the end of pouring out the liquid contained therein.
  • the recessed portion 17 is horizontal and does not work as a screw thread.
  • the angle ⁇ of intersection is smaller than the above range, it becomes difficult to remove the metal mold at the time of forming. Concretely, if the angle ⁇ of intersection is smaller than 80 degrees, it becomes difficult to remove the metal mold even by such means as forced removal or after-treatment. Further, if the angle ⁇ is larger than the above range, the side wall surface 19 becomes continuous to the horizontally recessed portion 17 (ceiling wall 17a) so mildly that the liquid is not cut at the point X of intersection. The same also holds true when there is formed no horizontally recessed portion 17; i.e., there is no point X of intersection for cutting the liquid (i. e. , the liquid is not cut).
  • the liquid drips down from the side wall surface 19 along the screw thread 10 like the bottle shown in Fig. 4 .
  • the liquid that has dripped down further, creeps down along the outer surface of the bottle body portion 5 to foul the entire bottle.
  • the horizontally recessed portion 17 is of an annular or arcuate shape. That is, the horizontally recessed portion 17 is formed over the whole circumference along the outer circumferential surface of the mouth portion 1 (annular recessed portion) or is formed intermittently along the outer circumferential surface of the mouth portion 1 (arcuate recessed portion).
  • the horizontally recessed portion 17 of which shape be selected is suitably determined depending on the shape and use of the container. If the container of the invention is a round-shaped bottle, for example, there is no restriction on the direction in which the liquid content is to be poured out. In this case, therefore, the annular horizontally recessed portion 17 must be formed over the whole circumference along the outer circumferential surface of the mouth portion 1.
  • the container of the invention is a square-shaped container as shown in Fig. 5 and, specifically, if the container is the square-shaped container having groove portions for gripping formed in the opposing two surfaces of the container body portion, the directions for pouring out the liquid have been specified. Therefore, the horizontally recessed portion 17 formed in the mouth portion 1 does not have to be of an annular shape; i.e., there may be formed one or a plurality of arcuate horizontally recessed portions 17 intermittently so as to be in parallel relative to the side surface of the container body portion 5.
  • the container of the present invention should have a shape which is as sharp as possible at the point X of intersection. For instance, it is desired that the radius of curvature thereof is not more than 0.5 mm. When chamfered at the point X of intersection, it is desired that the chamfering C is as small as possible. If the point X of intersection is rounded in a large size, the liquid remaining on the sidewall surface 19 is not cut at the point X of intersection at the end of pouring the liquid but flows around to the inside of the horizontally recessed portion 17. It is, therefore, probable that the liquid may flow down to the portion where the screw thread 10 is formed passing through the horizontally recessed portion 17.
  • the horizontally recessed portion 17 is formed at a position as close to the upper end 15 of the mouth portion as possible so far as the sealing is not lost when the cap is fitted.
  • a distance L from the point X of intersection to the upper end 15 of the mouth portion is in a range of 1.0 to 2.0 mm. If the horizontally recessed portion 17 is formed at a too low position, the liquid remains in an increased amount on the side wall surface 19 when pouring the liquid is discontinued and flows around into the horizontally recessed portion 17. As a result, the liquid easily flows through the horizontally recessed portion 17 down to the portion where the screw thread 10 is formed. Further, if the horizontally recessed portion 17 is formed too close to the upper end 15 of the mouth portion, the area decreases in the portion where the cap that is fitted comes into close contact thereto, and it becomes difficult to stably maintain the sealing.
  • the distance from the point X of intersection to the lower surface of the horizontally recessed portion 17 is regarded to be the height h of the horizontally recessed portion
  • the distance L is within the above-mentioned range and the screw thread is formed at a position which is not too low. Since the lower surface of the horizontally recessed portion 17 and the upper end 10a of the screw thread are formed integrally together as shown in Fig. 2 , the height h of the horizontally recessed portion becomes the distance of from the point X of intersection to the upper end 10a of the screw thread.
  • the depth d of the horizontally recessed portion 17 is large to some extent so far as the mouth portion 1 of the container does not lose the strength. For instance, it is desired that the depth d is in a range of from 0.2 to 1.5 mm. If the horizontally recessed portion 17 is not sufficiently deep, there occurs the same phenomenon as that of when the horizontally recessed portion 17 is not formed. That is, if the liquid that has flown down along the side wall surface 19 flows around even by a small amount into the recessed portion 17, then the recessed portion 17 is readily filled up with the liquid that has flown therein.
  • the liquid becomes the priming, and the liquid that has flown down along the side wall surface 19 does not cut at the point X of intersection but flows down to the portion where the screw thread 10 is formed. If the depth d is too large, on the other hand, the strength of the mouth portion 1 decreases at the portion where the horizontally recessed portion 17 is formed, and the mouth portion 1 tends to be easily broken.
  • the outer circumferential edge (portion that connects to the side wall surface 19) Y of the upper end 15 of the mouth portion has an angular shape close to the right angle like the above-mentioned point X of intersection.
  • this portion comes into close contact with the inner surface of the cap that is fitted to the mouth portion, affects the sealing and may, further, come in contact with the mouth of a person who attempts to drink. Therefore, this portion Y may have a curved surface that is rounded to a suitable degree like the known containers. This is because, according to the present invention, the liquid is effectively prevented from dripping due to the formation of the above-mentioned horizontally recessed portion 17.
  • Figs. 1 to 5 are concerned to the example of when the horizontally recessed portion is formed between the upper end of the screw thread and the upper end of the mouth portion.
  • the effect of preventing the dripping of liquid may be also exhibited even by forming the horizontally recessed portion in the screw thread.
  • the angle ⁇ of intersection of the upper wall surface of the horizontally recessed portion relative to the vertical direction is 90 to 150 degrees and, particularly preferably, 90 to 120 degrees.
  • Figs. 1 to 6 are illustrating examples of a plastic bottle. So far as the mouth portion provided with the screw thread is formed, however, the mode of the container of the invention is not limited to the bottles only but can also be applied to the bottle-shaped containers having wide mouths and to the bag-shaped contains. There is no specific limitation on the shapes of the containers of the invention, either.
  • the material of the container of the invention is not limited to the plastic material but may be a glass or a metal.
  • the plastic material is desired from such a standpoint that the horizontally recessed portion 17 can be easily formed satisfying the above-mentioned conditions.
  • the present invention improves the anti-dripping of liquid relying on the shape of the mouth portion of the container and, therefore, is not to specify or limit the contact angle between the mouth portion of the container and the liquid contained therein.
  • the anti-dripping is not limited by the viscosity or surface tension of the liquid that is contained.
  • plastic material there can be used those materials that have heretofore been used for producing containers for containing, specifically, liquids, such as polyesters as represented by polyethylene terephthalate (PET), and polyolefins like polyethylene and polypropylene. It is also possible to employ multilayer structures by using a gas-barrier resin such as ethylene vinyl alcohol resin or an oxygen absorber (oxidizing resin or transition metal catalyst) in combination with the above resin.
  • a gas-barrier resin such as ethylene vinyl alcohol resin or an oxygen absorber (oxidizing resin or transition metal catalyst) in combination with the above resin.
  • the liquid to be contained there can be selected any of those having low viscosities through up to those having high viscosities without special limitation. That is, the carbonated beverages have carbonic acid dissolved therein and are filled maintaining head space of some volume whereas the non-carbonated beverages are nearly fully filled without leaving head space.
  • the container is slightly tilted (the container is nearly upright) to pour out the liquid; i.e., the liquid is very likely to drip down.
  • the present invention makes it possible to effectively prevent the liquid from dripping even at the start of pouring out the non- carbonated beverage.
  • the mouth portions of the containers are formed white due to the heat crystallization for imparting heat resistance.
  • the liquids that are contained are colored liquids such as coffee, soy sauce, or various kinds of juices, fouling of the mouth portion of the container appears very conspicuous due to the liquid that has dripped.
  • the present invention is very useful in effectively preventing the liquid from dripping.
  • the present invention is applied to the bottles having volumes of not less than 500 ml. Namely, in the case of beverage bottles of small volumes of about 180 ml, the consumers, in many cases, drink the contents directly from the mouth portion of the containers. As the volumes of the containers increase, however, the consumes drink the liquid contents by once transferring them into a cup inviting, therefore, the occurrence of liquid dripping. It is, therefore, also effective to apply the present invention to the beverage bottles of large volumes.
  • PET bottles of a volume of 500 ml were used as sample bottles by changing only the mouth portion that formed the screw thread.
  • the bottles were each filled with 498 ml of coffee ⁇ viscosity at 25°C: 10 mPaS (B-type viscometer) ⁇ as the liquid content.
  • the positions of the center of gravity and the tilted angles were recorded as data every time based on the human operation for pouring out the liquid by hand.
  • a jig (6-axis-controlled robot manufactured by Yasukawa Denki Co.)
  • each of the samples was moved and turned to observe the state of liquid dripping with the eye.
  • the samples that permitted the liquid to fall down to the portion where the screw thread was formed were evaluated to be ⁇ (poor) and the samples that have cut the liquid at the point X of intersection were evaluated to be ⁇ (good).
  • the specifications of the mouth portion were set as described below.
  • Example 1 was followed but changing the specifications of the mouth portion as follows: Angle ⁇ intersected by the horizontally recessed portion 17 and the side wall surface 19: 150 degrees
  • Example 1 was followed but changing the specifications of the mouth portion as follows: Distance L between the point X of intersection and the mouth portion 15: 2.00 mm
  • Example 1 was followed but changing the specifications of the mouth portion as follows: Distance L between the point X of intersection and the mouth portion 15: 1.00 mm
  • Example 1 was followed but changing the specifications of the mouth portion as follows: Radius R of curvature at the point X of intersection: 0.5
  • Example 1 was followed but changing the specifications of the mouth portion as follows: Chamfer C at the point X of intersection: 0.3
  • Example 1 was followed but changing the specifications of the mouth portion as follows: Depth d of the horizontally recessed portion 17: 0.2 mm
  • Example 1 was followed but changing the specifications of the mouth portion as follows: Depth d of the horizontally recessed portion 17: 1.5 mm
  • Example 1 was followed but changing the specifications of the mouth portion as follows: Angle ⁇ intersected by the horizontally recessed portion 17 and the side wall surface 19: 86 degrees
  • Example 1 was followed but changing the specifications of the mouth portion as follows: Angle ⁇ intersected by the horizontally recessed portion 17 and the side wall surface 19: 160 degrees
  • Table 1 shows the results of testing the liquid drip prevention by using the sample bottles having the above-mentioned mouth portions.
  • Table 1 Example Comp. Example Item 1 2 3 4 5 6 7 8 9 1 2 Intersec ting angle ⁇ Radius of curvature or 120 150 120 120 120 120 120 120 120 86 - 160 chamfer at point X R0.1 R0.1 R0.1 R0.1 R0.5 C0.3 R0.1 R0.1 R0.1 - R0.1 Distance L (mm) 1.25 1.25 2.0 1.0 1.25 1.25 1.25 1.25 1.25 1.25 1.25 - 1.25 Depth d (mm) 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 0.2 1.5 1.0 - 1.0 No dripping ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Ceramic Engineering (AREA)
  • Containers Having Bodies Formed In One Piece (AREA)
  • Closures For Containers (AREA)
  • Details Of Rigid Or Semi-Rigid Containers (AREA)
EP12818230.0A 2011-07-26 2012-05-28 Drip preventing container Not-in-force EP2738112B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2011163144 2011-07-26
PCT/JP2012/063592 WO2013015006A1 (ja) 2011-07-26 2012-05-28 液垂れ防止性に優れた容器

Publications (3)

Publication Number Publication Date
EP2738112A1 EP2738112A1 (en) 2014-06-04
EP2738112A4 EP2738112A4 (en) 2015-03-18
EP2738112B1 true EP2738112B1 (en) 2017-03-01

Family

ID=47600866

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12818230.0A Not-in-force EP2738112B1 (en) 2011-07-26 2012-05-28 Drip preventing container

Country Status (6)

Country Link
US (1) US20140166607A1 (ko)
EP (1) EP2738112B1 (ko)
JP (1) JP6070556B2 (ko)
KR (1) KR20140042910A (ko)
CN (1) CN103826977A (ko)
WO (1) WO2013015006A1 (ko)

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US10239672B2 (en) * 2016-05-17 2019-03-26 Brandeis University Drip-free glass bottles having a circumferential channel and methods of making and using such bottles
CN115176364A (zh) 2020-03-23 2022-10-11 恩亿凯嘉股份有限公司 电极用催化剂的制造***和制造方法
USD976109S1 (en) * 2021-05-21 2023-01-24 The Clorox Company Bottle

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Also Published As

Publication number Publication date
JP6070556B2 (ja) 2017-02-01
WO2013015006A1 (ja) 2013-01-31
CN103826977A (zh) 2014-05-28
EP2738112A1 (en) 2014-06-04
JPWO2013015006A1 (ja) 2015-02-23
KR20140042910A (ko) 2014-04-07
EP2738112A4 (en) 2015-03-18
US20140166607A1 (en) 2014-06-19

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