JP2019137415A - Foaming liquid pouring tool - Google Patents

Abstract

To provide a hygienic foaming liquid pouring tool which can keep the foaming performance with a simple structure.SOLUTION: A first pouring tool 1 is composed of a synthetic resin cylindrical cap 10. The cylindrical cap 10 is composed of a hemispherical cap base 11 and a circular truncated cone-shaped pouring port 12 communicated with the cap base 11. A first opening 15 is opened on a lower surface of the cap base 11, and a second opening 16 is opened on an upper surface of the pouring port 12. The first pouring tool 1 is composed in such a manner that the first opening 15 is attached to cover an end of a foaming liquid container, and the foaming liquid is poured out from the second opening 16. A rough surface part by satin crepes having a lot of fine irregularities is formed on an inner surface of the cylindrical cap 10.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an effervescent liquid pouring tool used by being attached to an end of a container when the effervescent liquid is poured out from a container containing effervescent liquid such as beer.

  When beer is poured into a drinking container such as a glass, a fine foam layer (hereinafter referred to as “creamy foam”) in the form of foam, which is formed by agglomeration of many small bubbles on the liquid surface. It is said that it is preferable to maintain the flavor of the poured beer. The above-mentioned foaming liquid pouring tool is used to form such a creamy foam, and various types have been proposed in the past. For example, as a pouring tool of a type that is mounted and used so as to cover the lid of a beer can, a pouring tool that combines an unglazed ceramic cylinder and a synthetic resin cylinder (for example, Patent Document 1) And a pouring tool having a thin tubular spout for bubbling (see, for example, Patent Documents 2 and 3) are known.

Utility Model Registration No. 31007035 JP 2002-12248 A JP 2002-193310 A

  Unglazed pottery is excellent in terms of the ability to form creamy foam (hereinafter referred to as “foaming performance”), but once used, the part (rough surface) in contact with beer becomes wet, If it is used as it is without being dried, the foaming performance deteriorates. The type of pouring tool configured by combining a plurality of members such as pottery and resin is complicated in structure and easily increases in manufacturing cost. Moreover, in order to maintain a sanitary state, it is necessary to disassemble and clean, so it takes time. For this reason, the cleaning is insufficient and it tends to be unsanitary. Also for the type of pouring tool having a thin tubular pouring spout, since it takes time to clean the inside of the pouring spout, it is difficult to maintain a sanitary condition.

  This invention is made | formed in view of such a situation, and it aims at providing the sanitary foaming liquid extraction tool with a simple structure and foaming performance lasting.

  The pouring tool for effervescent liquid according to the present invention (for example, the first pouring tool 1 in the embodiment) is a container (for example, a can container 90 in the embodiment) containing an effervescent liquid (for example, beer BR in the embodiment). ) Is a foaming liquid pouring tool that is used by being attached to the end of the container when the foaming liquid is poured out, and is made of a synthetic resin and is formed into a cylindrical shape having both ends open. (For example, the cylindrical cap 10 in the first embodiment), and the cylindrical body is mounted so that the opening on the one end side (for example, the first opening 15 in the embodiment) covers the end of the container. The foamable liquid is poured out from the opening on the other end side (for example, the second opening 16 in the embodiment), and has a large number of minute irregularities on the inner surface of the cylindrical body. It is characterized in that the surface part is formed That.

In the foamable liquid pouring tool configured as described above, the cylindrical body communicates with the hemispherical base (for example, the cap base 11 in the embodiment) disposed on the one end side, and the base side. It is preferable that it is the structure provided with the cylindrical spout part extended from the said other end part side.

  In the foamable liquid pouring tool having the above-described configuration, it is preferable that the spout portion is configured to be gradually narrowed from the base side toward the other end side.

  In the foamable liquid pouring tool having the above-described configuration, the inner surface of the cylindrical body is a region in which the rough surface portion is formed in a portion that can contact the foamable liquid poured out from the container through the cylindrical body. It is preferable to include (for example, the rough surface region S1 in the embodiment) and a region not formed (for example, the non-rough surface region S2 in the embodiment).

  The pouring tool for foaming liquid according to the present invention includes a cylindrical body made of a synthetic resin formed in a cylindrical shape having both ends opened. The cylindrical body has a rough surface portion formed on the inner surface thereof, is attached so that the opening on one end side covers the end of the container, and the foamable liquid is poured out from the opening on the other end side. Structure. For this reason, the manufacturing cost can be suppressed, and since it is easy to clean, it is hygienic. The rough surface portion formed on the inner surface of the cylindrical body has a large number of minute irregularities, and a large number of bubbles having a diameter corresponding to the size of the irregularities are generated by contact with the foaming liquid poured out. In addition, a creamy foam can be formed by agglomeration of the numerous foams. The lathering performance by such a rough surface portion is the same as the rough surface of unglazed earthenware, but in the case of the present invention, the cylindrical body is made of a synthetic resin, so the hydrophobicity is high, and even if used once, the rough surface portion Since it tends to become dry, foaming performance does not deteriorate even if it is used continuously.

  In the foamable liquid dispensing tool according to the present invention, the cylindrical body is connected to the hemispherical base disposed on the one end side, and communicates with the base so as to extend from the base side to the other end side. If the structure is provided with a spout part, when the foamable liquid is poured out, it becomes easier to entrain air in the foamable liquid in the hemispherical base, so that foaming of the foamable liquid can be improved. It becomes.

  Further, in the foamable liquid pouring tool according to the present invention, if the spout portion is formed into a shape that gradually narrows from the base side toward the other end side, it is formed in the process of pouring the foamable liquid. It is possible to make the foams easily aggregate when passing through the spout portion.

  Further, in the foamable liquid pouring tool according to the present invention, a region where a rough surface portion is formed in a portion where the inner side surface of the cylindrical body can come into contact with the foamable liquid poured out from the container through the cylindrical body. And adjusting the ratio of the two areas in contact with the foamable liquid when pouring out the foamable liquid, thereby adjusting the foaming state of the foamable liquid. Is possible.

It is a perspective view of the extraction tool for foamable liquids concerning a 1st embodiment of the present invention. It is a top view of the extraction tool for foamable liquids concerning the said 1st Embodiment. It is a longitudinal cross-sectional view of the foaming liquid extraction tool which concerns on the said 1st Embodiment. It is the schematic which shows the state which mounted | wore the can container with the foaming liquid extraction tool which concerns on the said 1st Embodiment. It is the schematic which shows the usage method of the extraction tool for foamable liquids which concerns on the said 1st Embodiment. It is a figure which shows the relationship between the energy which a bubble has, and the diameter of a bubble. It is a figure which shows the state of the inner surface in which # 100 pear texture was formed. It is a figure which shows the state of the inner surface in which the # 220 pear texture was formed. It is a longitudinal cross-sectional view of the extraction tool for foamable liquids concerning 2nd Embodiment of this invention. It is a perspective view of the extraction tool for foamable liquids concerning a 3rd embodiment of the present invention. It is a perspective view of the extraction tool for foaming liquids concerning a 4th embodiment of the present invention. It is a schematic diagram which shows the one aspect | mode of the formation area of a rough surface part. It is a schematic diagram which shows another aspect of the formation area of a rough surface part.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. First, a foamable liquid pouring tool (hereinafter referred to as “first pouring tool 1”) according to the first embodiment will be described with reference to FIGS.

  As shown in FIG. 1, the 1st extraction tool 1 is comprised by the cylindrical member (henceforth "the cylindrical cap 10") which both ends (the upper end part and lower end part in a figure) opened. The cylindrical cap 10 was injection molded using a predetermined synthetic resin material (for example, PP: polypropylene, but PE: polyethylene, PET: polyethylene terephthalate, ABS: acrylonitrile butadiene, PA: polyamide, etc.). It is a member made of synthetic resin.

  The cylindrical cap 10 communicates with a hemispherical cap base 11 disposed on one end side (the lower end side in FIG. 1) and the cap base 11, and from the cap base 11 side to the other end side (FIG. 1). And a cylindrical spout part 12 extending to the upper end part side). An opening on one end side of the cylindrical cap 10 (hereinafter referred to as “first opening 15”) opens on the lower surface of the cap base 11, and an opening on the other end side (hereinafter referred to as “second opening 16”). Is open on the upper surface of the spout portion 12. Both the first opening 15 and the second opening 16 are circular, and the former is formed with a larger diameter than the latter.

  The spout portion 12 further includes a spout hem portion 13 disposed on the cap base 11 side and a spout body portion 14 disposed on the second opening 16 side. The spout hem part 13 smoothly connects the spout main body part 14 and the cap base part 11 without a step, and has a curved surface shape that protrudes inward. 1 and 2, for convenience, the boundary line L1 between the cap base 11 and the spout skirt 13 and the boundary line L2 between the spout skirt 13 and the spout body 14 are illustrated. In an actual molded product, such boundary lines L1 and L2 may not be formed or may not be visible even if formed.

  The cylindrical cap 10 (first extraction tool 1) has a rotationally symmetric shape (with respect to an arbitrary angle around the central axis C) with respect to the central axis C (see FIG. 3). It is composed of a continuous curved surface with no steps. Although the size and ratio of each part of the cylindrical cap 10 can be set as appropriate, examples of dimensions of each part as a preferred embodiment are as follows.

  The overall height H1 of the cylindrical cap 10 shown in FIG. 3 is set to 85.0 millimeters, for example, and the height H2 of only the spout body 14 is set to 40.0 millimeters, for example. . The inner diameter φ1 of the first opening 15 is set to, for example, 56.4 ± 0.1 mm, and the inner diameter φ2 of the second opening 16 is set to, for example, 15.0 mm. The inner diameter φ3 at the boundary position with the spout hem 13 is set to 26.0 millimeters, for example. The curvature radius R1 of the inner side surface 17 of the cap base 11 is set to, for example, 49.0 millimeters, and the curvature radius R2 of the inner side surface 17 of the spout skirt 13 is set to, for example, 41.0 millimeters. Moreover, the thickness of the cylindrical cap 10 is set to 1.0 millimeter, for example. In addition, the dimension illustrated here is a suitable example in the case of attaching and using the cylindrical cap 10 to the cover part of the common beer can used in Japan, It is not limited to this. .

  As shown in the partial enlarged view in FIG. 3, the skirt portion 11 a (annular portion close to the first opening 15) of the cap base portion 11 has a shape that slightly extends outward, and is formed on the inner side surface 17. Is formed with an annular ridge 18 extending along the periphery of the first opening 15. As shown in FIG. 4, the first pouring tool 1 (tubular cap 10) is used by being attached to the can container 90 so that the first opening 15 covers the lid portion 91 of the can container 90. Is removed from the canister 90. When the cylindrical cap 10 is attached or detached, the ridge portion 18 is formed in a shape that can be easily engaged with and detached from the flange portion 92 provided on the periphery of the lid portion of the can container 90. The skirt portion 11a of the cap base 11 has a shape that slightly expands outward. The lid 91 of the can container 90 is placed in the first opening 15 when the cylindrical cap 10 is attached to the can container 90. This is to make it easier to enter.

  On the inner side surface 17 of the cylindrical cap 10, a rough surface portion 20 having a predetermined surface roughness having a large number of minute irregularities (see a partially enlarged view in FIG. 5) is formed. The formation method of the rough surface portion 20 is not particularly limited. In the present embodiment, the surface of the mold for injection molding is subjected to textured finishing (such as shot blasting even if chemical treatment such as etching is used). A textured texture pattern having a large number of minute irregularities is formed, and the textured texture pattern is transferred onto the inner surface 17 of the cylindrical cap 10 by injection molding. ing. Moreover, although the rough surface part 20 can be formed in the arbitrary area | regions of the inner surface 17 of the cylindrical cap 10, it forms in the substantially whole region of the inner surface 17 in this embodiment. However, as shown in the partially enlarged view in FIG. 3, a region having a predetermined width (for example, about 4 millimeters) in the vertical direction sandwiching the protruding portion 18 in the skirt portion 11 a of the cap base 11 (arrow A in the drawing) The rough surface portion 20 is not formed in the lower region from the position indicated by. This is the adhesion when the cylindrical cap 10 is attached to the can container 90 (the inner surface 17 of the region above the ridges 18 where the rough surface portion 20 is not formed, and the bowl-shaped portion of the can container 90. This is for securing the adhesiveness to the 92. In addition, in the partial enlarged view in FIG. 3, the rough surface part 20 is typically shown in layer form.

  As for the 1st extraction tool 1 (cylindrical cap 10) comprised as mentioned above, as shown in FIG. 5, the cover part 91 (opening part provided in the cover part 91) of the can container 90 is opened. ) And used to pour the effervescent liquid (herein referred to as “beer BR”) in the can container 90 into a drinking container 95 such as a glass. When the cylindrical cap 10 attached to the can container 90 is tilted together with the can container 90, the beer BR in the can container 90 first flows into the cap base 11 from the opening, and then the cap base 11 and the spout skirt 13 Then, it flows along each inner side surface 17 of the spout main body 14, finally flows out from the second opening 16, and is poured into the drinking container 95.

  Since the cap base 11 is formed in a hemispherical shape, in the state shown in FIG. 5, the inclination angle of the inner side surface 17 (inclination angle with respect to the horizontal plane) becomes gentle (in some cases, the inclination is upward with respect to the flowing direction) is there). For this reason, the beer BR that has flowed out of the can container 90 into the cap base portion 11 temporarily stays in the cap base portion 11, and at this time, it becomes easy to entrain air into the beer BR. By entraining air, the beer BR is easily foamed, so foaming is improved.

  Moreover, when beer BR flows along the inner surface 17 of the cylindrical cap 10, the rough surface part 20 formed in the inner surface 17 and beer BR will move, contacting. At this time, the air in the minute recesses in the rough surface portion 20 becomes bubbles, and minute bubbles containing carbon dioxide (hereinafter referred to as “bubbles 25”) are formed in the many recesses. The formed bubbles 25 move away from the recesses along with the flow of beer BR. However, the adjacent bubbles 25 come into contact with each other and are joined together, so that a large number of bubbles 25 are aggregated to form a fine creamy bubble. (Foam) is formed. Since the spout part 12 of the cylindrical cap 10 is gradually narrowed toward the distal end side, the creamy bubbles formed in this way are easily aggregated.

Through such a process, the beer BR flows out from the second opening 16 and is poured into the drinking container 95, so that creamy foam is formed on the upper part of the liquid level of the beer BR poured into the drinking container 95. A layer is formed. Since the cylindrical cap 10 is made of synthetic resin, it is highly hydrophobic and difficult to get wet. Therefore, even if it is used once, when the cylindrical cap 10 is returned to the standing state together with the can container 90, the rough surface portion 20 returns to a dry state immediately. Further, since the structure is simple and can be washed, it is easy to clean and hygienic.

  The lathering performance of the first pouring tool 1 is affected by the length of the rough surface portion 20 positioned on the path through which the beer BR flows when pouring the beer BR, the area of the rough surface portion 20 in contact with the flowing beer BR, and the like. It is considered that the influence of the surface roughness (roughness, height, spacing, etc.) of the rough surface portion 20 is large. In particular, the size of the concave portion of the rough surface portion 20 greatly affects the size of the bubbles (bubbles 25) formed there. Whether the foam formed in the recess can subsequently grow into a creamy foam is closely related to whether the foam formed in the recess is energetically stable. Conceivable. Here, with reference to FIG. 6 in addition, the relationship between the bubble size and stability will be briefly described.

The beer foam is simply modeled and the energy of the foam is expressed as U (r) as a function of the foam radius r. At this time, U (r) is energy that is considered to be more stable as the foam becomes larger (energy that attempts to inflate the foam caused by carbon dioxide in beer) U ₁ (r), and energy that is considered to become more stable as the foam becomes smaller ( It can be thought of as the sum of the energy (U ₂ (r)) that attempts to deflate the bubbles due to the interfacial energy of the bubbles. At this time, U ₁ (r) can be expressed by the following formula (1), U ₂ (r) can be expressed by the following formula (2), and U (r) can be expressed by the following formula (3). Here, V is the volume of the bubble, S is the surface area of the bubble, and a and b are predetermined coefficients. The bubbles are spherical.
_{U 1 (r) = - aV} = - (4πar 3/3) ... (1)
U ₂ (r) = bS = 4πbr ² (2)
_{U (r) = U 1 (} r) + U 2 (r) = - (4πar 3/3) + 4πbr 2 ... (3)

  FIG. 6 is a graph showing the energy U (r) at this time. In the graph of FIG. 6, the energy U (r) is 0 when r = 0 or r = 3b / a, and the energy U (r) is maximum when r = 2b / a. The radius of the bubble when the energy U (r) is maximized is called a critical radius, and the energy Uc of the bubble having the critical radius is called an energy barrier. Bubbles smaller than the critical radius try to wither and bubbles smaller than the critical radius try to swell, neither is stable, whereas bubbles of a size near the critical radius are stable. Therefore, it is possible to form stable bubbles by giving energy equivalent to an energy barrier as kinetic energy or the like. In addition, this is a case where a foam is formed independently in beer, and when a foam is formed in a recessed part, formation of a stable foam is attained with smaller energy.

From the above considerations, a rough surface having a large number of minute recesses is suitable for forming bubbles, and the surface roughness (such as the size and density of the recesses) of the rough surface is stable. It is thought that it is greatly related. Then, in order to determine the surface roughness of the rough surface portion 20, as a result of conducting experiments on various surface roughnesses, the surface of the textured surface of the synthetic resin material (pattern formed by textured finishing of the textured surface) Roughnesses in the range of # 60 to # 400 (numbers with # represent mesh numbers), particularly those of about # 200 (for example, in the range of # 140 to # 270) in polypropylene materials, are fine in beer. It was found to be suitable for forming fine creamy bubbles. It was also confirmed that even if the surface roughness was the same, the foaming performance was different due to the difference in the resin material (it is considered that the characteristics such as the surface tension differ depending on the resin material). As an example of the surface roughness, FIG. 7 shows a state of # 100 pear texture and FIG. 8 shows a state of # 220 pear texture. In addition, according to what the # 200 equivalent pear texture wrinkle was formed in the inner surface of the 1st pouring tool 1 (cylindrical cap 10), how to pour the 1st pouring tool 1, such as how to incline It was confirmed that the ratio of the thickness of the creamy foam layer to the underlying beer liquid layer was approximately 3: 7 when the beer was poured into the drinking container without being substantially affected by the difference in .

  Next, a foamable liquid pouring tool (hereinafter referred to as “second pouring tool 3”) according to the second embodiment will be described with reference to FIG. The second pouring tool 3 corresponds to a simplification of the shape of the first pouring tool 1 described above, and is constituted by a synthetic resin tubular member (hereinafter referred to as “cylindrical cap 30”). . The cylindrical cap 30 includes a hemispherical cap base 31 and a frustoconical cylindrical spout 32 communicating with the cap base 31, and a first opening 35 is formed on the lower surface of the cap base 31. A second opening 36 is opened on the upper surface of the spout portion 32 (both openings are circular, and their functions are the first opening 15 of the first pouring tool 1, the second opening 36). 2 and the same as the opening 16 in FIG. Further, the skirt portion 31a of the cap base portion 31 is formed in a cylindrical shape, and the inner side surface 37 has an annular ridge 38 extending along the periphery of the first opening 35 (the function is the first extraction tool 1). The same as that of the protruding portion 18). Examples of dimensions of each part as a preferred embodiment of the cylindrical cap 30 are as follows.

  The height H11 of the spout main body 32 shown in FIG. 9 is set to 60.0 millimeters, for example, and the height H12 of the cap base portion 31 excluding the skirt portion 31a is 30.0 millimeters, for example. The height H13 of the skirt 31a is set to 4.0 millimeters, for example. The inner diameter φ11 of the first opening 35 is set to, for example, 56.4 ± 0.1 mm, and the inner diameter φ12 of the second opening 36 is set to a value in the range of, for example, 15.0 to 20.00 mm. The inner diameter φ13 at the boundary position between the spout 34 and the cap base 31 is set to a value in the range of 20.0 to 30.00 millimeters, for example. Moreover, the thickness of the cylindrical cap 30 is set to 1.0 millimeter, for example. The dimension illustrated here is a suitable example corresponding to the beer can in Japan, and is not limited to this.

  On the inner side surface 37 of the cylindrical cap 30 (excluding the inner side surface 37 of the skirt portion 11 of the cap base 31), a rough surface portion 40 having a large number of minute irregularities is formed. The formation method, shape, surface roughness, function, and the like of the rough surface portion 40 are the same as those of the rough surface portion 20 of the first extraction tool 1. Further, the manufacturing method and the usage method of the second extraction tool 3 and the operation and effect thereof are the same as those of the first extraction tool 1.

  Next, a foamable liquid dispensing tool (hereinafter referred to as “third dispensing tool 5”) according to a third embodiment will be described with reference to FIG. The third pouring tool 5 is composed of a cylindrical member made of synthetic resin (hereinafter referred to as “cylindrical cap 50”). The cylindrical cap 50 communicates with the cap base portion 51 having a circular lid shape and the cap base portion 51. A semi-conical trapezoidal cylindrical spout portion 52 is provided. A circular first opening 55 is opened on the lower surface of the cap base 51, and a semicircular second opening 56 is opened on the upper surface of the spout portion 52 (each function is the first note). The same as the first opening 15 and the second opening 16 of the tool 1).

  On the inner surface of the cylindrical cap 50, a rough surface portion having a large number of minute irregularities is formed (not shown). The formation method, shape, surface roughness, function, and the like of the rough surface portion are the same as those of the rough surface portion 20 of the first extraction tool 1. Further, the manufacturing method and the usage method of the third extraction tool 5 and the operation and effect thereof are the same as those of the first extraction tool 1.

Next, a foamable liquid dispensing tool (hereinafter referred to as “fourth dispensing tool 7”) according to a fourth embodiment will be described with reference to FIG. The fourth pouring tool 7 is constituted by a cylindrical member made of synthetic resin (hereinafter referred to as “cylindrical cap 70”), and the cylindrical cap 70 communicates with the cylindrical cap base 71 and the cap base 71. An oblique frustoconical and cylindrical spout portion 72 is provided. A first opening 55 is opened on the lower surface of the cap base 71, and a second opening 76 is opened on the upper surface of the spout portion 72 (both openings are circular, each function is The same as the first opening 15 and the second opening 16 of one extraction tool 1).

  On the inner side surface of the cylindrical cap 70, a rough surface portion having a large number of minute irregularities is formed (not shown). The formation method, shape, surface roughness, function, and the like of the rough surface portion are the same as those of the rough surface portion 20 of the first extraction tool 1. Further, the manufacturing method and the usage method of the fourth extraction tool 7 and the operation and effect thereof are the same as those of the first extraction tool 1.

  In each of the above-described embodiments, the rough surface portion is provided over substantially the entire inner surface of the cylindrical cap. However, the rough surface portion may be provided only in a partial region of the inner surface. Hereinafter, with reference to FIG. 12 and FIG. 13 further, the example of the formation area of a rough surface part is demonstrated. 12 and 13 show longitudinal sections of the truncated cone-shaped cylindrical caps 80 and 90, respectively.

  A cylindrical cap 80 shown in FIG. 12 is a truncated cone-shaped cylindrical member having a first opening 85 and a second opening 86, and a region where a rough surface portion is formed (hereinafter referred to as “rough surface region S1”). And regions where the rough surface portion is not formed (for example, a region constituted by a smooth surface, hereinafter referred to as “non-rough surface region S2”) are formed so as to be alternately arranged in the circumferential direction on the inner surface 87. Has been. The widths of the rough surface areas S1 may be set to be equal to each other or different from each other. Similarly, the widths of the non-rough surface regions S2 may be set to be equal to each other or different from each other.

  According to the cylindrical cap 80, when the foamable liquid is poured out, the rough surface is positioned on the path of the inner surface 87 through which the foamable liquid passes by appropriately changing the direction (direction around the central axis). It is possible to change the area ratio between the region S1 and the non-rough surface region S2. Moreover, it becomes possible to adjust the foaming state of a foamable liquid by changing an area ratio. For example, when it is desired to improve foaming, the foaming liquid is in contact with the rough surface area S1 in a large amount. When the foaming liquid is not so much foamed, the foaming liquid is not so in contact with the rough surface area S1. The cap 80 can be used by changing the direction as appropriate.

  A cylindrical cap 90 shown in FIG. 13 is a truncated cone-shaped cylindrical member having a first opening 95 and a second opening 96, and the rough surface region S 1 and the non-rough surface region S 2 are vertically arranged on the inner surface 97. They are formed so as to be arranged alternately in the direction (the width of each rough surface region S1 and the width of each non-rough surface region S2 can be set as appropriate). In such a mode, when the ratio of the rough surface area S1 and the rough surface area S1 located on the path of the inner surface 97 through which the foamable liquid passes is set in advance to a ratio at which desired bubbling can be obtained. Is preferred. When a plurality of rough surface regions S1 are provided as described above, the surface roughness of each rough surface region S1 may be set to be equal to or different from each other. Further, the rough surface areas S1 having different surface roughnesses may be arranged adjacent to each other.

  As mentioned above, although embodiment of this invention was described, the scope of the present invention is not limited to the above-mentioned embodiment. For example, in the above-described embodiment, the rough surface portion is made of pear texture, but it can also be made of leather wrinkle (however, the foaming performance is inferior to that of pear texture). Moreover, in the above-mentioned embodiment, although the aspect attached to a can container was demonstrated as an example, it can also be set as the structure which mounts | wears and uses the extraction tool of this invention for another container (for example, bottle and glass). Is possible. For example, the tip end side (second opening) of the pouring tool of the above-described embodiment may be configured to be attached to the mouth of a beer bottle so that it can be used for both a can container and a bottle container.

Moreover, although the extraction tool of the above-mentioned embodiment has a shape that becomes narrower toward the tip side, it has a shape that widens toward the tip side, or a shape that becomes thin to the middle but the tip part has a shape that spreads. It is also possible to make the diameter constant over the entire length. Moreover, in the above-mentioned embodiment, although it is used for beer frothing, an effervescent drink other than beer, for example, an effervescent alcoholic drink that is similar to beer in appearance and flavor but is different from beer due to differences in components, etc. It is also suitable for whipping of sparkling alcoholic beverages classified as, and carbonated beverages called non-alcoholic beer. Of course, it can also be used for frothing other sparkling alcoholic beverages (champagne, etc.) having a different flavor from beer, carbonated beverages not containing alcohol, or foaming liquids that are not drinkable.

DESCRIPTION OF SYMBOLS 1 1st extraction tool 3 2nd extraction tool 5 3rd extraction tool 7 4th extraction tool 10, 30, 50, 70, 80, 90 Cylindrical cap 11, 31, 51, 71 Cap base 12, 32 , 52, 72 Spout portion 15, 35, 55, 75, 85, 95 First opening 16, 36, 56, 76, 86, 96 Second opening 17, 37, 57, 77, 87, 97 Inner surface 20, 40 Rough surface portion 25 Bubble 90 Can container BR Beer S1 Rough surface region S2 Non-rough surface region

Claims (4)

When the foamable liquid is poured out from the container containing the foamable liquid, the foamable liquid pouring tool used by being attached to the end of the container,
Provided with a cylindrical tube made of synthetic resin formed in a cylindrical shape with both ends opened,
The cylindrical body is mounted so that the opening on the one end side covers the end of the container, and the foamable liquid is poured out from the opening on the other end side,
A foaming liquid pouring tool, wherein a rough surface portion having a large number of minute irregularities is formed on an inner surface of the cylindrical body.   The cylindrical body includes a hemispherical base portion disposed on the one end side, and a cylindrical spout portion that communicates with the base portion and extends from the base side to the other end side. The pouring tool for foamable liquid according to claim 1, wherein:   The said spout part is comprised in the shape which becomes thin gradually toward the said other end part side from the said base part side, The extraction tool for foamable liquids of Claim 2 characterized by the above-mentioned. The inner surface of the cylindrical body includes a region where the rough surface portion is formed and a region where the rough surface portion is not formed in a portion that can come into contact with the foamable liquid poured out from the container through the cylindrical body. The extraction tool for foamable liquid according to any one of claims 1 to 3.