JP4202794B2 - Beverage straws and beverage containers with beverages - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a drinking straw and a beverage container. More specifically, the present invention relates to a beverage straw suitable for drinking beverages contained in a beverage container whose opening surface is sealed with a sealing film, and a beverage container containing beverages.
[0002]
[Prior art]
For example, a beverage container in which a soft drink or the like is enclosed in a cup-shaped or box-shaped paper container or a plastic container is widely used because it is excellent in the preservation and portability of contents. Such beverage containers generally have an opening covered with a sealing film made of aluminum foil, a resin film, or the like. When a beverage is sucked from a beverage container, the sealing film is used as a drinking straw. Generally, a beverage straw is inserted into a beverage container.
[0003]
Such a drinking straw is made of, for example, a synthetic resin having a diameter of about 3 to 10 mm, and one end thereof is cut at an acute angle in order to easily break through the sealing film of the beverage container. There are many things. Moreover, in order to make it attach to the side surface of a drink container, without projecting larger than the height of a drink container, many multistage type straws, such as a two-stage type, are used.
[0004]
When a beverage straw whose one end is cut at an acute angle is used to break through a beverage membrane sealing membrane, in many cases, a section of the sealing membrane is cut into a shape approximating the cross-sectional shape of the beverage straw. , One end is connected to the sealing film. However, depending on the piercing angle and piercing speed of the drinking straw, the section of the sealing film that approximates the cross-sectional shape of the drinking straw caused by the piercing of the drinking straw may be completely separated from the sealing film. was there. If the section of the sealing film completely separated from the sealing film may fall into the beverage in the beverage container, there is a concern that the beverage may be contaminated, for example, when the outer surface side of the sealing film is dirty. It was. Moreover, when the cut | disconnected slice | slice of the sealing film may fall in the drink in a drink container, it was not unimaginable that it will drink with a drink with a drinking straw.
[0005]
Corresponding to these cases, even if the section of the sealing film in the beverage container is separated from the sealing film by the piercing of the drinking straw and falls into the beverage, the section of the sealing film is put together with the beverage by the drinking straw. A drinking straw that prevents ingestion has been proposed (see, for example, Patent Document 1).
[0006]
[Patent Document 1]
JP-A-2002-253415 gazette
According to such a patent document 1, even if the slice of the sealing film in the beverage container is cut off from the sealing film by the piercing of the drinking straw and falls into the beverage, the sealing film slice remains inside the drinking straw. It has a means to prevent intrusion. For example, a drinking straw in which the inside of a drinking straw is changed into a cross shape and a drinking straw having a spire-like portion formed at the tip have been proposed.
[0008]
[Problems to be solved by the invention]
However, the beverage straw as described above, when the slice of the sealing film in the beverage container is cut off from the sealing film by the piercing of the drinking straw and falls into the beverage, Although there is an effect of preventing sucking, it is not possible to prevent a part of the sealing film in the beverage container from being separated from the sealing film and falling into the beverage by the piercing of the drinking straw. Accordingly, it has not been possible to solve the concern that the section of the sealing film completely separated from the sealing film falls on the beverage in the beverage container and contaminates the beverage.
[0009]
The present invention has been made in view of the above circumstances, and a beverage in which a section of a sealing film in a beverage container is not separated from the sealing film and falls into the beverage when the drinking straw is pierced An object of the present invention is to provide a drinking straw and a beverage container containing the same.
[0010]
[Means for Solving the Problems]
In order to achieve the above object, in the present invention,
1. A cylindrical drinking straw that extends along an axis and has both ends open, and one opening forms an inclined surface inclined with respect to the axis,
A sharpened portion that cuts a part of the sealing film of the beverage container is formed on the projecting side of the inclined surface, and a part of the side edge of the opening is bent on the receding side of the inclined surface, A drinking straw characterized by forming an anti-cutting part that narrows an opening area and prevents part of the sealing film cut and opened by the sharp part,
2. A cylindrical drinking straw that extends along an axis and has both ends open, and one opening forms an inclined surface inclined with respect to the axis,
Forming a sharpened portion that cuts out a part of the sealing film of the beverage container on the protruding side of the inclined surface, and forming a notch in a part of the side edge of the opening on the receding side of the inclined surface; Beverage straws are provided, each having a cut preventing portion for preventing a part of the sealing film cut and opened by the sharpened portion from being cut and detached.
[0011]
According to the drinking straw described above, a part of the sealing film cut and opened by the sharpened portion is prevented from being cut and detached. Therefore, it can be prevented that a part of the sealing film falls on the beverage and contaminates the beverage, or a part of the sealing film falls on the beverage and sucks it.
[0012]
In general, it is considered that the sealing film of a beverage container is cut into a circular shape by piercing a drinking straw mainly when it is cut by a shearing force so as to make a hole with a punch. It is done. The tip of the drinking straw used for beverages covered with a sealing film forms an inclined surface that is obliquely cut and inclined with respect to the axis, and the protruding side of the inclined surface first tears the resin film and opens. After that, the shearing force does not work sufficiently on the receding side of the inclined surface, and it is not normally cut out into a circular shape, but it may be cut on the receding side of the inclined surface in rare cases. In particular, when a highly rigid resin film is used as a sealing film, the film is easily cut, and further, a sealing film mainly composed of an aluminum foil is more easily cut. Therefore, in the present invention, it is possible to prevent the occurrence of a section based on the cutout of the sealing film by the drinking straw by positively providing a cutting prevention portion that hardly generates shearing force at the tip portion of the drinking straw. It is something that can be done.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings, mainly using a two-stage straw as an example. Each drawing referred to below is drawn with some emphasis in order to clearly describe the invention, and does not limit the dimensions of each part. FIG. 1 is an external perspective view showing a beverage product in a container provided with the drinking straw of the present invention. A beverage product 11 in a container of FIG. 1 (A) includes a beverage container 12 which is a beverage storage body containing a beverage therein. The beverage container (beverage storage body) 12 includes a cup-shaped container body 13 made of, for example, plastic, a sealing film 14 that seals the upper surface opening of the container body 13, and a drinking straw 15. As the sealing film 14, for example, a resin film formed on both surfaces of an aluminum foil is used. The drinking straw 15 is affixed to the side surface of the container body 13 in a state of being stored in the storage bag 16, for example.
[0014]
As shown in FIG. 1 (B), a beverage container 72 of a beverage product 71 containing a container is made of, for example, a paper container body 73 formed in a rectangular parallelepiped shape, and a seal formed on a part of the upper surface of the container body 73. You may comprise from the film | membrane 74 and the drinking straw 75. In this example, the sealing film 74 only needs to be exposed in the size of the diameter of the drinking straw 75.
[0015]
FIG. 2 is a cross-sectional view showing the structure of the beverage straw of the present invention in a contracted state, and FIG. 3 shows the expanded state. The drinking straw 15 is configured, for example, in a two-stage extension type, and two straw units 15a and 15b are combined in a nested structure. In addition, a straw unit means the straw which consists of one pipe | tube which comprises the drinking straw here. Such a drinking straw 15 can change its length along the axis S between the contracted state shown in FIG. 2 and the extended state shown in FIG. 3 by pulling out the straw unit 15a from the straw unit 15b. It has a structure.
[0016]
The straw unit 15b has a diameter larger than that of the straw unit 15a, and a part of the straw unit 15a is accommodated in the straw unit 15b. Such a drinking straw 15 has a tube diameter of, for example, 3 to 10 mm and a tube thickness of 0.1 to 0.5 mm. One end of the straw unit 15b is a drinking mouth 20, and the diameter is narrowed so that the straw unit 15a does not jump out of the straw unit 15b.
[0017]
An engaging portion 17 is formed at the other end of the straw unit 15b. The engaging portion 17 engages with an engaging protrusion 18 formed at the end of the straw unit 15a when the straw unit 15a is pulled out of the straw unit 15b and the drinking straw 15 is in the extended state shown in FIG. To do. By engaging the engaging portion 17 and the engaging protrusion 18 in this way, when the sealing film 14 is pierced by the drinking straw 15, the drinking straw 15 that has been expanded returns to the contracted state. To prevent. In addition, although not shown in the drawings, a portion of the side surface of the body portion of the straw unit that comes into contact with the beverage container opening when drinking is provided with ridges and / or ridges so that the inside of the container is not depressurized and sucks the beverage. It is preferable that a pressure difference between the inside and outside of the beverage container does not occur when drinking.
[0018]
FIG. 4 is an enlarged perspective view showing one opening side of the drinking straw 15, and FIG. 5 is an enlarged sectional view thereof. One opening of the straw unit 15 a forms an inclined surface 21 that is inclined with respect to the axis S that is the extension direction of the beverage straw 15. The inclined surface 21 is inclined with respect to the axis S at an angle α. Such an angle α may be, for example, 40 to 65 °, preferably 55 to 65 °. By forming the inclined surface 21, the sharpened portion 22 having a sharp tip at 40 to 65 °, for example, is formed on the protruding side of the inclined surface 21. The sharpened portion 22 acts to open a part of the sealing film 14 when breaking through the sealing film 14 with a drinking straw 15 as will be described in detail later. When the angle of the inclined surface 21 exceeds 65 °, the opening property tends to be lowered, and when the angle of the inclined surface 21 is less than 40 °, the rigidity of the tip portion is insufficient, and the sealing film 14 is formed with the drinking straw 15. When breaking through, the sharpened portion 22 tends to bend easily.
[0019]
A cutting prevention portion 23 is formed on the receding side of the inclined surface 21. The cutting prevention portion 23 is obtained by rounding (R-processing) an end surface of a cylindrical material constituting the beverage straw 15, and is formed adjacent to the sharpened portion 22. For example, the length L of the cutting preventing portion 23 may be 0.5 mm or more, preferably 1 mm or more along the curved surface of the inclined surface 21. Such a cutting prevention part 23 cuts one opening of the straw unit 15a diagonally to form the inclined surface 21, and then heats the receding side of the inclined surface 21 by a certain width by means such as spot heating. Thus, the end surface of the cylindrical material constituting the drinking straw 15 may be formed by rounding only a part.
[0020]
As described above, one opening side of the drinking straw 15 forms the inclined surface 21 inclined with respect to the axis S that is the extending direction, and the sharpened portion 22 having a sharp tip on the protruding side of the inclined surface 21 is formed. In addition to being formed, a cut preventing portion 23 is formed on the receding side of the inclined surface 21 by rounding the end surface of the cylindrical material constituting the drinking straw 15.
[0021]
Next, the effect | action of the drinking straw of this invention of the structure mentioned above is demonstrated. When the beverage straw 15 is used for sucking the beverage 30 in the beverage container 12, as shown in FIG. 6, the side on which the inclined surface 21 of the beverage straw 15 is formed is directed downward. The beverage straw 15 is strongly pressed toward the sealing film 14. Then, as shown in FIG. 7, the sharpened portion 22 cuts a part of the sealing film 14. Further, when the drinking straw 15 is pierced, the opening 31 formed in the sealing film 14 is widened by the inclined surface 21, and the section 14 a in which a part of the sealing film 14 is opened extends toward the beverage 30.
[0022]
Eventually, as shown in FIG. 8, when the opening 31 formed in the sealing film 14 is expanded to the same extent as the diameter of the drinking straw 15, the base portion of the section 14a of the sealing film 14 becomes the drinking straw. When hitting the 15 cutting prevention portions 23, the size of the opening 31 is not increased any more. At this time, by forming a cut preventing portion 23 obtained by rounding the end surface of the cylindrical material constituting the beverage straw 15 on the receding side of the inclined surface 21, the slice 14 a of the sealing film 14 becomes the receding side end of the inclined surface 21. It is surely prevented from being cut at the part. The cut prevention part 23 whose end face is rounded acts so that the drinking straw 15 smoothly penetrates the sealing film 14 while the slice 14a is connected to the sealing film 14.
[0023]
Thus, by forming the cut prevention part 23 which rounded the end surface of the cylindrical material which comprises the drinking straw 15 in the end of the drinking straw 15, the piece 14a of the sealing film 14 is the retreat side of the inclined surface 21. It is possible to reliably prevent cutting at the end. Therefore, when the drinking straw 15 is pierced, the section 14a of the sealing film 14 is cut and dropped into the beverage 30, and the beverage 30 can be reliably prevented from being contaminated. Therefore, accidental ingestion of the slice 14a can also be prevented.
[0024]
In addition, the shape of a cutting | disconnection prevention part can employ | adopt various shapes besides rounding the end surface of the cylindrical material which comprises the drinking straw like embodiment mentioned above. Hereinafter, the shape of the cutting prevention part will be listed in order with reference to the drawings.
[0025]
FIG. 9 shows an example in which a part of the side edge of the drinking straw 15 is bent and flattened as the cutting preventing portion 41 to narrow the opening area of the drinking straw 15. This example is characterized in that the front end cross-section of the beverage straw 15 is not parallel, but narrower than the portion following it. In this case, although the tip is sharpened and the sealing film of the beverage container is easily pierced, it is difficult to cut the section of the sealing film. In addition, since the cross-sectional area of the portion following the tip portion is large, there is little pressure loss even when the tip portion is thin, and a smooth suction of the beverage is possible. Further, by rounding off the end face of the cutting preventing portion 41, it is possible to enhance the cutting preventing effect of the section of the sealing film. Moreover, although the cut-in preventing part 41 shown in FIG. 9 has a substantially triangular shape, the cut-in preventing part 41 is not only pushed in but also has a cutting-off preventing effect by eliminating the tip end face shape of the pushed-in part in a straight line. Will increase. The structures such as the inclined surface 21 and the sharpened portion 22 are the same as those in the first embodiment, and are denoted by the same reference numerals.
[0026]
FIG. 10 is an example in which the trough shape 42 is formed by projecting the pushing shape of the cut prevention portion shown in FIG. 9 into a pleat shape in the inner diameter direction of the drinking straw 15, and this trough portion 42 is used as the cut prevention portion. is there. Further, FIG. 11 shows two trough portions 43 formed by projecting the pushing shape of the cutting preventing portion shown in FIG. 9 at two locations in the inner diameter direction of the beverage straw 15. This is an example of a cutting prevention unit. By rounding the tip end faces of such valley-like portions 42 and valley-like portions 43, it is possible to further enhance the cutting prevention effect of the section of the sealing film. The structures such as the inclined surface 21 and the sharpened portion 22 are the same as those in the first embodiment, and are denoted by the same reference numerals.
[0027]
In FIG. 12, a cut portion 44 is provided as a cut preventing portion of the drinking straw 15. The notch 44 is not limited to the shape shown in FIG. 12, but as shown in FIG. 13, a part 45 of the notch 45 is bent in the inner diameter direction of the beverage straw 15 to form a cut preventing part. Good. The size of the cut portion constituting the cut preventing portion 45 is not particularly limited, but the width of the beverage straw 15 is about 0.2 to 3 mm along the circumference of the beverage straw 15 when viewed from the front. The cutting length along the length is preferably 0.2 to 3 mm. In the embodiment shown in FIGS. 12 and 13, the structures such as the inclined surface 21 and the sharpened portion 22 are the same as those in the first embodiment, and are denoted by the same reference numerals.
[0028]
When the drinking straw is a two-stage type, as shown in FIG. 14, the cross-sectional shape of the straw unit on the tip side may be changed to the cross-sectional shape of the drinking straw unit. The drinking straw 51 includes a leading straw unit 51a and a drinking straw unit 51b. And as the cutting prevention part 52 of the straw unit 51a on the tip side, the cross section of the tip part of the straw unit 51a is not made circular, but the cross section of the latter half part following the tip is made into a circle, so that the sealing film is pulled out and dropped off. Not only can it be prevented, but it can be reduced in size without being bulky before being integrated with a beverage, and a multi-stage straw that is easy to use can be elongated and lengthened when used.
[0029]
As the cutting prevention part 52 of the straw unit 51a on the tip side, the cross-sectional shape on the tip side of the drinking straw 51 may be a ridge 53 as shown in FIG. The length of the ridges 53 can be within 20 mm, preferably within 10 mm, more preferably within 5 mm from the tip. Further, it is sufficient that the deformed portion (the portion that is not circular in cross section) of the tip section is formed only in the vicinity of the tip. On the other hand, if the deformed portion becomes too long, the function as a multistage straw tends to deteriorate. In addition to this, as the cutting prevention part 52 of the straw unit 51a on the tip side, the cross-sectional shape on the tip side of the drinking straw 51 is, for example, two grooves shown in FIG. 16 and the ridge 54 sandwiched between them, A groove 55 shown in FIG. In particular, if the protrusions project outwardly as shown in FIGS. 15 and 16, the protrusions cannot pass through the tip of the straw unit 51a, and there is no reduced diameter part at the rear end of the straw unit 51a. The straw unit 51a can be prevented from jumping out of the straw unit 51b.
[0030]
As shown in FIG. 18, the angle of the cutting preventing portion 62 relative to the axis S may be larger than the angle of the sharpening portion 63 of the drinking straw 61 relative to the axis S as the cutting preventing portion 62 of the drinking straw 61. Specifically, when the angle β with respect to the axis S of the sharpened portion 63 is 40 to 65 °, the angle γ with respect to the axis S of the cutting preventing portion 62 is preferably more than 65 ° and not more than 115 °, and 80 to 100 A range of ° is preferable. If the angle γ with respect to the axis S of the cutting preventing part 62 is within these ranges, cutting of the section of the sealing film of the beverage container can be prevented. In the embodiment shown in FIG. 18 as well, other structures such as the inclined surface 21 are the same as those in the first embodiment, and are denoted by the same reference numerals.
[0031]
As shown to Fig.19 (a), you may comprise the whole inclined surface 82 of the drinking straw 81 as the piercing part 83 which pierces the sealing film of a drink containing drink container. In such a drinking straw 81, the peripheral edge of the inclined surface 82 may be rounded over the entire circumference to form the cutting preventing portion 84. In order to form the cutting preventing portion 84 in the drinking straw 81 immediately after forming the inclined surface 82 shown in FIG. 19B, the corner portion 85 of the inclined surface 82 is rounded by heat by heating the inclined surface 82. That's fine.
[0032]
For such heating, for example, radiant heat is preferably used. Specifically, an annular heater, far infrared rays, or the like is used as a heat source, and the inclined surface 82 of the drinking straw 81 is brought close to the heat source, or hot air is blown on the inclined surface 82 of the drinking straw 81 to thereby form the inclined surface 82. The surface temperature may be heated to a temperature at which the cylindrical material constituting the drinking straw 81 softens.
[0033]
The inclined surface 82 is formed by obliquely cutting the cylindrical material constituting the drinking straw 81 with a sharp cutter or the like in the manufacturing process, and the peripheral edge of the inclined surface 82 is formed with a sharp corner 85. However, by heating the inclined surface 82, that is, the entire piercing portion 83, the corner portion 85 is rounded and the cutting preventing portion 84 is formed. It should be noted that the shape of the cutting prevention portion 84 shown in FIG. 19A is drawn with some emphasis in order to clearly explain the invention, and the degree to which the corner portion 85 is actually rounded is, for example, the inclined surface 82. What is necessary is just to be able to visually recognize that the corner portion 85 is rounded before and after heating when the whole is magnified 10 to 30 times and observed.
[0034]
When the corner portion 85 of the inclined surface 82 is rounded in this way, the force required to pierce the sealing film of the beverage container is slightly larger than when the corner portion 85 is not rounded, but a highly rigid synthetic resin. For example, by using a homo-polypropylene or the like and appropriately adjusting the angle of the inclined surface 82 within a range of, for example, 40 to 65 °, the conventional piercing property for the sealing film can be maintained.
[0035]
Any of the cutting preventing portions of the above-described embodiments can be easily manufactured by post-processing a cut straw tube made of a synthetic resin using heat. For example, in order to make the end face of the tip end round, it can be easily manufactured by applying heat to a part of the end face of the cut straw tube. In addition, the straw tip portion according to another aspect can be molded easily by using a heated male mold and a female mold and holding the mold while heating as necessary.
[0036]
【The invention's effect】
As described above in detail, according to the beverage straw and beverage-containing beverage container of the present invention, a part of the sealing film cut open by the sharpened portion is prevented from being cut off and detached. Therefore, it can be prevented that a part of the sealing film falls on the beverage and contaminates the beverage, or a part of the sealing film falls on the beverage and sucks it.
[Brief description of the drawings]
FIG. 1 is an external perspective view showing a beverage product in a container provided with a drinking straw according to the present invention.
FIG. 2 is a cross-sectional view of the beverage straw of the present invention in a contracted state.
FIG. 3 is a cross-sectional view of the beverage straw of the present invention in an extended state.
FIG. 4 is an enlarged perspective view of a tip portion of the beverage straw according to the present invention.
FIG. 5 is an enlarged cross-sectional view of the tip portion of the beverage straw according to the present invention.
FIG. 6 is an explanatory view for explaining the action of the drinking straw according to the present invention.
FIG. 7 is an explanatory view for explaining the action of the drinking straw according to the present invention.
FIG. 8 is an explanatory view for explaining the action of the drinking straw according to the present invention.
FIG. 9 is an enlarged perspective view for explaining another embodiment of the drinking straw according to the present invention.
FIG. 10 is an enlarged perspective view for explaining another embodiment of the drinking straw according to the present invention.
FIG. 11 is an enlarged perspective view for explaining another embodiment of the drinking straw according to the present invention.
FIG. 12 is an enlarged perspective view for explaining another embodiment of the beverage straw according to the present invention.
FIG. 13 is an enlarged perspective view for explaining another embodiment of the beverage straw according to the present invention.
FIG. 14 is a perspective view for explaining another embodiment of the beverage straw according to the present invention.
FIG. 15 is a cross-sectional view illustrating another embodiment of the beverage straw according to the present invention.
FIG. 16 is a cross-sectional view illustrating another embodiment of the beverage straw according to the present invention.
FIG. 17 is a cross-sectional view for explaining another embodiment of the beverage straw according to the present invention.
FIG. 18 is an enlarged cross-sectional view for explaining another embodiment of the beverage straw according to the present invention.
FIG. 19 is an enlarged cross-sectional view for explaining another embodiment of the beverage straw according to the present invention.
[Explanation of symbols]
12 Beverage container (beverage container)
15 Straw 21 for drinks 21 Inclined surface 22 Sharp part 23 Cutting prevention part 83 Puncture part

Claims (7)

A cylindrical drinking straw that extends along an axis and has both ends open, and one opening forms an inclined surface inclined with respect to the axis,
A sharpened portion that cuts a part of the sealing film of the beverage container is formed on the projecting side of the inclined surface, and a part of the side edge of the opening is bent on the receding side of the inclined surface, A drinking straw characterized in that an opening area is narrowed to form a cutting prevention portion for preventing cutting and detachment of a part of the sealing film opened by the sharpened portion. A cylindrical drinking straw that extends along an axis and has both ends open, and one opening forms an inclined surface inclined with respect to the axis,
Forming a sharpened portion that cuts out a part of the sealing film of the beverage container on the protruding side of the inclined surface, and forming a notch in a part of the side edge of the opening on the receding side of the inclined surface; A drinking straw characterized in that a cut preventing portion for preventing a part of the sealing film cut and opened by the sharpened portion is formed.   The drinking straw according to any one of claims 1 and 2, wherein a part of a side edge of the opening is rounded. The drinking straw according to any one of claims 1 to 3 , wherein an inclination angle of the inclined surface is made larger with respect to the shaft than the sharpened portion in the cutting prevention portion. The drinking straw according to any one of claims 1 to 4, wherein a plurality of straw units having different diameters are nested to make the length variable in the axial direction. The drinking straw according to claim 5 , wherein a cross-sectional shape of a straw unit on a distal end side of the plurality of straw units is different from a cross-sectional shape of another straw unit. A beverage container containing a beverage comprising the beverage straw according to any one of claims 1 to 6 and a beverage container provided with a sealing film.

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