EP2738112A1 - Container superior in preventing dripping - Google Patents
Container superior in preventing dripping Download PDFInfo
- Publication number
- EP2738112A1 EP2738112A1 EP12818230.0A EP12818230A EP2738112A1 EP 2738112 A1 EP2738112 A1 EP 2738112A1 EP 12818230 A EP12818230 A EP 12818230A EP 2738112 A1 EP2738112 A1 EP 2738112A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- container
- mouth portion
- recessed portion
- liquid
- 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.)
- Granted
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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 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.
- a container having a mouth portion forming, on the outer circumferential surface thereof, a screw thread for fastening a cap, wherein a horizontally recessed portion which is arcuate or annular is formed between the upper end of the screw thread and the upper end of the mouth portion or in the screw thread, and the angle ⁇ of the upper wall surface of the horizontally recessed portion is set to be 80 degrees to 150 degrees relative to the vertical direction.
- 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 or in the screw thread.
- 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 80 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 part 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 80 to 150 degrees, preferably, 90 to 150 degrees and, particularly preferably, 90 to 120 degrees relative to the vertical direction.
- 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 .
- 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. Namely, 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 horizontally recessed portion 17 having the above-mentioned angle ⁇ according to the present invention, it is allowed to effectively prevent the liquid from dripping also at the start or at the end of pouring out the liquid content.
- 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.
- 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 present invention also exhibits the effect of preventing the dripping of liquid 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 80 to 150 degrees, preferably, 90 to 150 degrees and, particularly preferably, 90 to 120 degrees.
- Figs. 1 to 6 are illustrating examples of when the invention is applied to 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 X (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. Specifications of the mouth portion (whitened due to the heat crystallization): Distance between the point X of intersection and the upper end 10a of the screw thread (height h of the horizontally recessed portion 17): 1.35 mm Angle ⁇ intersected by the horizontally recessed portion 17 and the side wall surface 19: 120 degrees Radius R of curvature at the point X of intersection: 0.1 Distance L between the point X of intersection and the mouth portion 15: 1.25 mm Depth d of the horizontally recessed portion 17: 1.0 mm
- Example 1 was followed but changing the specifications of the mouth portion as follows:
- 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 ⁇ 120 150 120 120 120 120 120 120 120 86 - 160 Radius of curvature or 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 ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇
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- 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)
Abstract
Description
- 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.
- However, 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. Apatent document 2 proposes forming a coating on the mouth portion of the containers by firing a silicone oil. -
- Patent document 1:
JP-A-2001-97384 - Patent document 2:
JP-A-9-193937 - 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, however, 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. Specifically, when 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. In this case, if 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.
- It is, therefore, 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.
- According to the present invention, there is provided a container having a mouth portion forming, on the outer circumferential surface thereof, a screw thread for fastening a cap, wherein a horizontally recessed portion which is arcuate or annular is formed between the upper end of the screw thread and the upper end of the mouth portion or in the screw thread, and the angle θ of the upper wall surface of the horizontally recessed portion is set to be 80 degrees to 150 degrees relative to the vertical direction.
- In the container of the present invention, it is desired that:
- (1) The angle θ of the upper wall surface of the horizontally recessed portion is set to be 90 degrees to 150 degrees relative to the vertical direction;
- (2) The horizontally recessed portion is formed between the upper end of the screw thread and the upper end of the mouth portion, the horizontally recessed portion being annular in shape, and the angle θ of the upper wall surface of the horizontally recessed portion being set to be 90 degrees to 150 degrees relative to the vertical direction;
- (3) The distance from the upper wall surface of the horizontally recessed portion to the upper end of the mouth portion is in a range of 1 to 2 mm; and
- (4) The depth of the horizontally recessed portion is in a range of 0.2 to 1.5 mm.
Specifically, from the standpoint of very easily forming the horizontally recessed portion satisfying a predetermined angle θ of intersection, it is desired that: - (5) The container is made of a plastic material.
It is, further, desired that the container of the present invention: - (6) Is used for containing non-carbonated beverages; and
- (7) Has the mouth portion formed in white color, the container being used for containing colored liquids.
- 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 or in the screw thread. Here, an important feature resides in that the angle θ (hereinafter often angle θ of intersection) of the upper wall surface of the horizontally recessed portion relative to the vertical direction is set to be 80 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. That is, even if the liquid that is poured out drips along the outer circumferential surface (side wall surface), the liquid is cut at the portion where the side wall surface intersects the upper wall surface of the horizontally recessed portion. As a result, the container is effectively prevented from being fouled with the liquid that drips.
- Besides, the horizontally recessed portion having the angle θ 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.
-
- [
Fig. 1 ] is a view showing the whole plastic bottle which is a representative example of the container of the invention. - [
Fig. 2 ] is a view illustrating, on an enlarged scale and in cross section, the portion A of the bottle ofFig. 1 . - [
Fig. 3 ] is a view showing a state where the liquid content is being poured out by tilting the bottle ofFig. 1 . - [
Fig. 4 ] is a view showing a state where the liquid content is being poured out by tilting the bottle of Comparative Example without forming the horizontally recessed portion. - [
Fig. 5 ] is a schematic view illustrating the position of the arcuate recessed portion of when the container of the invention is a bottle of a square shape. - [
Fig. 6 ] is another view illustrating, on an enlarged scale and in cross section, the portion A of the bottle ofFig. 1 . - Referring to
Fig. 1 showing a plastic bottle which is a representative example of the container of the present invention, the bottle has a mouth portion generally designated at 1 at its upper portion. The lower part of themouth portion 1 stretches to ashoulder portion 3 that curves outward. Theshoulder portion 3 stretches to abody portion 5, the lower end of thebody portion 5 being closed with abottom portion 7. - As will be learned from
Fig. 1 , ascrew thread 10 is formed on the outer circumferential surface of themouth portion 1 and with which a cap engages by screw. Acircumferential protuberance 11 is formed under thescrew thread 10. Though not shown, a TE band may be provided at the lower end of the cap that is fitted by screw. Engagement of the TE band with thecircumferential 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 part of themouth portion 1 of the container. The container can be held and carried by utilizing thesupport ring 13. - Referring to an enlarged view of
Fig. 2 together withFig. 1 , an annular or arcuate horizontally recessedportion 17 is formed between theupper end 10a of thescrew thread 10 and theupper end 15 of the container (bottle). That is, aside wall surface 19 stretches down in the vertical direction from the outer circumferential edge of theupper end 15 of the mouth portion, and is continuous, at a point X of intersection, to anupper wall surface 17a of the horizontally recessedportion 17. - In the present invention, it is very important from the standpoint of preventing the dripping of liquid that the
upper wall surface 17a of the horizontally recessedportion 17 has an angle θ of 80 to 150 degrees, preferably, 90 to 150 degrees and, particularly preferably, 90 to 120 degrees relative to the vertical direction. With the angle θ lying within the above range, when the container is tilted to pour out the liquid contained therein, the liquid may flow down to theside wall surface 19 from the outer circumferential edge of theupper end 15 of the mouth portion as shown inFig. 3 . In this case, however, the liquid is cut at the portion (point of intersection) X where theside wall surface 19 and theupper wall surface 17a of the horizontally recessedportion 17 are joined together and at where the force that pushes the liquid against the wall becomes zero. Namely, the liquid separates away from the container wall and falls down separating away from themouth 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. By forming the horizontally recessedportion 17 having the above-mentioned angle θ according to the present invention, it is allowed to effectively prevent the liquid from dripping also at the start or at the end of pouring out the liquid content. - Here, the recessed
portion 17 is horizontal and does not work as a screw thread. - If the angle θ 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 θ 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 θ 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 recessedportion 17; i.e., there is no point X of intersection for cutting the liquid (i.e., the liquid is not cut). Therefore, either if the angle θ is larger than the above range or if there has been formed no horizontally recessedportion 17, the liquid drips down from theside wall surface 19 along thescrew thread 10 like the bottle shown inFig. 4 . Depending on the cases, the liquid that has dripped down, further, creeps down along the outer surface of thebottle body portion 5 to foul the entire bottle. - The horizontally recessed
portion 17 is of an annular or arcuate shape. That is, the horizontally recessedportion 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 recessedportion 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 recessedportion 17 must be formed over the whole circumference along the outer circumferential surface of themouth portion 1. On the other hand, if the container of the invention is a square-shaped container as shown inFig. 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 recessedportion 17 formed in themouth portion 1 does not have to be of an annular shape; i.e., there may be formed one or a plurality of arcuate horizontally recessedportions 17 intermittently so as to be in parallel relative to the side surface of thecontainer 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 recessedportion 17. It is, therefore, probable that the liquid may flow down to the portion where thescrew thread 10 is formed passing through the horizontally recessedportion 17. - It is, further, desired that the horizontally recessed
portion 17 is formed at a position as close to theupper end 15 of the mouth portion as possible so far as the sealing is not lost when the cap is fitted. Concretely, it is desired that a distance L from the point X of intersection to theupper end 15 of the mouth portion is in a range of 1.0 to 2.0 mm. If the horizontally recessedportion 17 is formed at a too low position, the liquid remains in an increased amount on theside wall surface 19 when pouring the liquid is discontinued and flows around into the horizontally recessedportion 17. As a result, the liquid easily flows through the horizontally recessedportion 17 down to the portion where thescrew thread 10 is formed. Further, if the horizontally recessedportion 17 is formed too close to theupper 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. - On the other hand, when 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, there is no specific limitation on the height of the horizontally recessed portion but it is desired that the distance L is within the above-mentioned range and the screw thread is formed at a position which is not too low. When the lower surface of the horizontally recessedportion 17 and theupper end 10a of the screw thread are formed integrally together as shown inFig. 2 , the height h of the horizontally recessed portion becomes the distance of from the point X of intersection to theupper end 10a of the screw thread. - In the invention, further, it is desired that the depth d of the horizontally recessed
portion 17 is large to some extent so far as themouth 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 recessedportion 17 is not sufficiently deep, there occurs the same phenomenon as that of when the horizontally recessedportion 17 is not formed. That is, if the liquid that has flown down along theside wall surface 19 flows around even by a small amount into the recessedportion 17, then the recessedportion 17 is readily filled up with the liquid that has flown therein. As a result, the liquid becomes the priming, and the liquid that has flown down along theside wall surface 19 does not cut at the point X of intersection but flows down to the portion where thescrew thread 10 is formed. If the depth d is too large, on the other hand, the strength of themouth portion 1 decreases at the portion where the horizontally recessedportion 17 is formed, and themouth portion 1 tends to be easily broken. - From the standpoint of preventing the liquid from dripping, further, it is desired that 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. However, 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 recessedportion 17. - The above description and
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. As shown inFig. 6 , however, the present invention also exhibits the effect of preventing the dripping of liquid even by forming the horizontally recessed portion in the screw thread. In this case, however, the angle θ of intersection of the upper wall surface of the horizontally recessed portion relative to the vertical direction is 80 to 150 degrees, preferably, 90 to 150 degrees and, particularly preferably, 90 to 120 degrees. - In this case, further, though there is no specific limitation on the height h of the horizontally recessed
portion 17, it is desired that the screw thread is not formed at a too upper position and a suitable distance is maintained by the screw thread. - The
Figs. 1 to 6 are illustrating examples of when the invention is applied to 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. However, 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. Besides, the anti-dripping is not limited by the viscosity or surface tension of the liquid that is contained.
- As the 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.
- In order to effectively prevent the liquid from dripping at the time of pouring out the liquid that is contained according to the invention, it is desired to so select the shape of the container and the liquid contained therein that the liquid can be prevented from dripping most advantageously.
- As 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. When it is attempted to pour the liquid out, first, therefore, 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.
- In the plastic containers, in general, the mouth portions of the containers are formed white due to the heat crystallization for imparting heat resistance. When 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. In such cases, the present invention is very useful in effectively preventing the liquid from dripping.
- When the liquids to be contained are beverages, it is desired that 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.
- Excellent effects of the invention will now be described by way of the following experiments.
- In the experiments, preventing the liquid from dripping was tested as described below.
- 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. By using 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 X (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.
Specifications of the mouth portion (whitened due to the heat crystallization):Distance between the point X of intersection and the upper end 10a of the screw thread (height h of the horizontally recessed portion 17):1.35 mm Angle θ intersected by the horizontally recessed portion 17 and the side wall surface 19:120 degrees Radius R of curvature at the point X of intersection: 0.1 Distance L between the point X of intersection and the mouth portion 15: 1.25 mm Depth d of the horizontally recessed portion 17: 1.0 mm - Example 1 was followed but changing the specifications of the mouth portion as follows:
- Angle θ 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 θ intersected by the horizontally recessed portion 17 and the side wall surface 19:86 degrees - A conventional bottle without the step (horizontally recessed portion) was used to evaluate.
- Example 1 was followed but changing the specifications of the mouth portion as follows:
Angle θ 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 θ 120 150 120 120 120 120 120 120 86 - 160 Radius of curvature or 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 Depth d (mm) 1.0 1.0 1.0 1.0 1.0 1.0 0.2 1.5 1.0 - 1.0 No dripping ○ ○ ○ ○ ○ ○ ○ ○ ○ × × -
- 1:
- mouth portion of the container
- 10:
- screw thread
- 10a:
- upper end of the screw thread
- 15:
- upper end of the mouth portion
- 17:
- horizontally recessed portion
- 17a:
- upper wall surface of the horizontally recessed portion
- 19:
- side wall surface
- θ :
- Angle intersected by the
upper wall surface 17a and theside wall surface 19
Claims (8)
- A container having a mouth portion forming, on the outer circumferential surface thereof, a screw thread for fastening a cap, wherein a horizontally recessed portion which is arcuate or annular is formed between the upper end of said screw thread and the upper end of said mouth portion or in said screw thread, and the angle θ of the upper wall surface of said horizontally recessed portion is set to be 80 degrees to 150 degrees relative to the vertical direction.
- The container according to claim 1, wherein said angle θ is set to be 90 degrees to 150 degrees.
- The container according to claim 1, wherein said horizontally recessed portion is formed between the upper end of said screw thread and the upper end of said mouth portion, said horizontally recessed portion being annular in shape, and said angle θ being set to be 90 degrees to 150 degrees.
- The container according to claim 1, wherein the distance from the upper wall surface of said horizontally recessed portion to the upper end of said mouth portion is in a range of 1 to 2 mm.
- The container according to claim 1, wherein the depth of said horizontally recessed portion is in a range of 0.2 to 1.5 mm.
- The container according to claim 1, wherein said container is made of a plastic material.
- The container according to claim 6, wherein said container is used for containing non- carbonated beverages.
- The container according to claim 6, wherein said container has the mouth portion formed in white color, and is used for containing colored liquids.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2011163144 | 2011-07-26 | ||
PCT/JP2012/063592 WO2013015006A1 (en) | 2011-07-26 | 2012-05-28 | Container superior in preventing dripping |
Publications (3)
Publication Number | Publication Date |
---|---|
EP2738112A1 true EP2738112A1 (en) | 2014-06-04 |
EP2738112A4 EP2738112A4 (en) | 2015-03-18 |
EP2738112B1 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 (en) |
EP (1) | EP2738112B1 (en) |
JP (1) | JP6070556B2 (en) |
KR (1) | KR20140042910A (en) |
CN (1) | CN103826977A (en) |
WO (1) | WO2013015006A1 (en) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3774843B2 (en) * | 2001-05-25 | 2006-05-17 | マルヤス工業株式会社 | Multi-tube heat exchanger |
JP4860531B2 (en) * | 2007-03-30 | 2012-01-25 | 株式会社クボタ | Pyrolysis tube |
GB2485399B (en) * | 2010-11-12 | 2014-02-12 | Mark Harrison | Container preventing contact with plastics |
US9114911B2 (en) * | 2012-10-19 | 2015-08-25 | Owens-Brockway Glass Container Inc. | Container, handle for a container, and handle and container assembly |
US20160137346A1 (en) * | 2014-11-18 | 2016-05-19 | Brandeis University | Drip free glass bottles and methods of making such bottles |
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 (en) | 2020-03-23 | 2022-10-11 | 恩亿凯嘉股份有限公司 | System and method for producing electrode catalyst |
USD976109S1 (en) * | 2021-05-21 | 2023-01-24 | The Clorox Company | Bottle |
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US2025406A (en) * | 1932-11-04 | 1935-12-24 | Richard B Tippett | Nondrip bottle |
US2014033A (en) * | 1933-07-27 | 1935-09-10 | Seneca S Smith | Bottle and seal therefor |
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US2785841A (en) * | 1954-12-22 | 1957-03-19 | French Co R T | Non-drip controllable-flow bottle and closure |
US3086671A (en) * | 1962-08-17 | 1963-04-23 | Hyspect Container Corp | Plastic bottle |
US3297184A (en) * | 1963-11-05 | 1967-01-10 | B D Lab Inc | Cap for culture tubes |
US3804285A (en) * | 1972-05-23 | 1974-04-16 | Lilly Co Eli | Bottle with pourout neck |
GB8725738D0 (en) * | 1987-11-03 | 1987-12-09 | Reliance Products Ltd | Cover for plastic containers |
WO1989007553A1 (en) * | 1988-02-19 | 1989-08-24 | Stölzle-Oberglas Aktiengesellschaft | Mouth of a container for flowing materials |
US5050754A (en) * | 1989-10-23 | 1991-09-24 | West Penn Plastics, Inc. | Cap for a neck finish on a wide mouth container |
GB2257693B (en) * | 1991-07-10 | 1995-08-02 | Beeson & Sons Ltd | A container and closure |
GB9012041D0 (en) * | 1990-05-30 | 1990-07-18 | Beeson & Sons Ltd | Improvements in or relating to containers |
US5150803A (en) * | 1991-07-25 | 1992-09-29 | Mr. Coffee, Inc. | Decanter and lid assembly for automatic drip coffee maker |
BE1006399A7 (en) * | 1993-09-27 | 1994-08-16 | Resilux | Closing device. |
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JPH09193937A (en) | 1996-01-18 | 1997-07-29 | Kikkoman Corp | Liquid packaging bottle |
DE19645263A1 (en) * | 1996-11-02 | 1998-05-07 | Tetra Laval Holdings & Finance | Plasticizer pack with aseptically tight snap lid and preform for the production of this pack |
US6264050B1 (en) * | 1998-10-06 | 2001-07-24 | Plastipak Packaging, Inc. | Container with improved neck portion and method for making the same |
JP2001097384A (en) | 1999-09-27 | 2001-04-10 | Toyo Glass Co Ltd | Glass container |
FR2800357B1 (en) * | 1999-11-03 | 2002-01-04 | Pechiney Emballage Alimentaire | IMPROVED POURER AND CONTAINER-CONTAINING CAPSULE |
USD463982S1 (en) * | 2001-08-15 | 2002-10-08 | Silgan Plastics Corporation | Container |
JP3994146B2 (en) * | 2001-12-18 | 2007-10-17 | 株式会社吉野工業所 | Synthetic resin container body and preform mold equipment |
US6997336B2 (en) * | 2002-09-23 | 2006-02-14 | Graham Packaging Company, L.P. | Plastic cafare |
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FR2946960B1 (en) * | 2009-06-19 | 2016-07-01 | Presticorc | BOX OF THE TYPE A BOTTLE AND BOTTLE EQUIPPED WITH SUCH A BOX |
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US9016489B2 (en) * | 2010-06-30 | 2015-04-28 | Amcor Limited | Circumferential reinforcing groove for container finish |
-
2012
- 2012-05-28 WO PCT/JP2012/063592 patent/WO2013015006A1/en active Application Filing
- 2012-05-28 JP JP2013525607A patent/JP6070556B2/en active Active
- 2012-05-28 EP EP12818230.0A patent/EP2738112B1/en not_active Not-in-force
- 2012-05-28 US US14/234,885 patent/US20140166607A1/en not_active Abandoned
- 2012-05-28 CN CN201280046325.2A patent/CN103826977A/en active Pending
- 2012-05-28 KR KR1020147004891A patent/KR20140042910A/en active Search and Examination
Also Published As
Publication number | Publication date |
---|---|
JP6070556B2 (en) | 2017-02-01 |
WO2013015006A1 (en) | 2013-01-31 |
CN103826977A (en) | 2014-05-28 |
EP2738112B1 (en) | 2017-03-01 |
JPWO2013015006A1 (en) | 2015-02-23 |
KR20140042910A (en) | 2014-04-07 |
EP2738112A4 (en) | 2015-03-18 |
US20140166607A1 (en) | 2014-06-19 |
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