JP2582006B2 - Drinking straws - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The disclosed technology relates to a straw structure in which a beverage such as milk or juice stored in a predetermined block-shaped pack made of paper or the like is attached to the side of the pack and used for drinking. Belongs to the technical field.

[0002]

2. Description of the Related Art As is well known, as life becomes richer, citizens' lives are diversified, and eating and drinking is not limited to homes, ordinary restaurants and cafeterias, but also to so-called fast food, snacks and pubs. Spread of simple eating
We make variation of civic life rich and convenient.

[0003] In order to easily obtain a drink such as milk or juice and ingest instantly at a vending machine or the like in a store such as a supermarket, as shown in FIG.
For example, a predetermined amount of the beverage contained in a cubic type pack 1 made of paper or the like is supplied to the suction port 2 in the upper corner portion thereof.
On the other hand, using a straw 4 made of resin or the like that breaks through the film 3 made of aluminum foil or the like sealed from the point of health and hygiene and sucks the beverage inside the straw 3 so as to be easy to use.
Diagonal direction of the side of Pack 1 in order to make
Alternatively, a mode in which the sheet is integrally set in a longitudinal direction with a predetermined adhesive through a sealing material 5 or by welding (heating, hot melt, or the like) is widely fixed.

At the time of use, the sealing material 5 is peeled off from the side surface of the pack 1 and the straw 4 is removed, and the tip of the straw 4 breaks through the aluminum foil film 3 of the suction port 2 so as to face the inside so as to suck and drink. .

[0005] However, recently, when a small-sized pack 1 comes out due to various conditions, it is difficult to make the length of the straw 4 attached on the diagonal line on the side of the pack 1 sufficiently long to reach the inside during drinking and drinking. From there, as shown in FIG.
A double-tube type straw 9 in which an inner tube 8 having an opening 7 formed by cutting off an opening at the tip to break through the membrane 3 with respect to the outer tube 6 is made freely movable forward and backward by the applicant and the like has been researched and developed by the applicant and the like. The inner tube 8 is slid relative to the outer tube 6 when integrated with the side surface of the pack 1 by heat welding.
In a contracted posture, the heat is integrally welded to the side surface of the pack 1, and at the time of drinking and drinking, the inner tube 8 is slid with respect to the outer tube 6, and is expanded.
The inner tube 8 is made to have a predetermined length, the oblique opening 7 is formed, the membrane 3 is pierced, and the inner tube 8 is exposed to the inside and sucked to perform predetermined feeding.

[0006] Further, such an aspect is further improved, and when suction is performed from the suction port at the base end of the outer tube 6 in the correct drinking / sucking posture, air from the joint portion between the outer tube 6 and the inner tube 8 is obtained. In order to prevent leakage, a trumpet-shaped expanding taper portion is provided at the base end of the inner tube 8 and a corresponding taper portion is provided at the distal end of the outer tube 6 to seal the sliding portions of the inner and outer tubes 6 and 8. In addition, a stopper is formed at the base end of the outer tube to improve
Practical products that prevent the inner tube 8 from coming off are also becoming available.

[0007]

However, in the case of such a double-tube type straw 9, when drinking and drinking, the inner tube 8 is used.
When the membrane 3 is pierced by the beveled opening 7 at the end of the membrane 3 and the membrane 3 has a corresponding strength or tension of aluminum foil or the like, it is connected through a joint between the outer tube and the inner tube. Since the strength and rigidity are insufficient due to all the joining modes and there is a possibility of bending, the outer tube 6 and the inner tube 8 are both made to have a predetermined thickness so as to maintain sufficient strength and rigidity to withstand the bending. However, the internal and external pipes used in the mass production system
Since a large amount of resin such as polypropylene is used as the material, a considerable amount of material is used in consideration of the yield of defective products and the like, and there is a disadvantage that the cost is increased.

To cope with this, it is conceivable to use a resin having a predetermined strength and rigidity. However, there is a disadvantage that the cost cannot be justified, and the roundness of the cross section at the time of extrusion molding is uniform and reproduced. There is a disadvantage that it is difficult to guarantee that there is a property, and it is difficult to form the tapered part and stopper part in the subsequent process, etc.In addition, incinerators for incineration of waste recently However, there is a negative point in that a high heat generation process is performed so as to deteriorate the heat resistance.

In order to cope with the generation of high heat during the incineration of resinous industrial wastes, there is a technique in which calcium carbonate is mixed into a material to reduce heat build-up and increase strength. When the technology is used for drinking straws, it cannot be introduced because it violates the Food Sanitation Law in terms of acetic acid detection reaction and the like, and it is not suitable for introduction from the viewpoint of easy processing.

Here, the applicant has been conducting various researches and developments on a technique for improving strength and rigidity as an additive to be mixed into a resin material of a straw, and for sufficiently incinerating wastes, and has been conducting various researches and developments for many years. However, since straws are used for aspirating beverages, not only the above-mentioned problems are solved, but also the demands of women, children, etc. The viewpoints of the taste and design of the user cannot be neglected, and although a technique capable of satisfying all of these aspects has been eagerly pursued, there has been no one that can sufficiently clear them.

[0011]

The object of the invention of this application is to solve the problems of the material and design structure of straws based on the above-mentioned prior art, and to provide a resin material such as polypropylene with a predetermined strength and rigidity. A certain amount of talc as an additive is mixed in, and while having the optimal size, it has sufficient strength and rigidity to withstand use, so that it is possible to reduce the amount of materials involved in mass production. It has sufficient processability in terms of extrusion and molding, good yield, high product accuracy, high reliability of products, and it can deal with pollution problems, satisfying taste and design for consumers. It is an object of the present invention to provide an excellent drinking straw that can be used in the food manufacturing industry to benefit the handling technology application field.

[0012]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the constitution of the invention of the present application, which is based on the above-mentioned claims and aims at the above-mentioned object, is to provide a double-tube type drinking straw. A predetermined amount of talc (talc) is added to a resin material such as polypropylene for either or both of the outer tube and the inner tube which are made expandable and contractible by relative slide (not added depending on the design, the conventional mode). Similarly, the raw material is subjected to a predetermined extrusion molding to form an outer tube and an inner tube.
% Range (close to 6% for inner tubes, 1.% for outer tubes).
(Approximately 5%) to provide sufficient strength and rigidity, and have sufficient structural strength and rigidity during extrusion molding, to reduce the wall thickness, and to maintain roundness with good reproducibility. In addition, the taper portion and stopper at the opening in the later forming process are formed with high precision, the molding is performed exactly as designed, and the material amount is suppressed with good yield, So that costs can be reduced,
In addition, when eating, the bend or middle bend does not occur in the opening at the time of breakage due to piercing of the film of the suction port of the pack by the oblique portion of the opening at the tip of the inner tube, so that it has sufficient strength and rigidity. , The main thing that can be seen inside the pack, and furthermore, talc (talc)
In order to eliminate the problem of design in which the user feels that the outer tube and / or the inner tube, or both of them, have a poor color as an eating tool because they have a gray color or a dark color close to it, A certain amount of coloring agent such as talc is mixed into the material together with talc (talc) to create a colored design so as not to disturb the tastes and preferences of consumers. Furthermore, it is convenient to handle when assembling the outer and inner tubes. It has taken technical measures to make it exist.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIGS.

3 and 4 will be described using the same reference numerals.

Numeral 10 denotes a drinking straw according to the invention of the present invention, which is of a double-tube type comprising an outer tube 6 'and an inner tube 8' which slide relatively in and out, and is made of a base material. The base material is a mode in which talc (talc) is mixed in a proportion of 1.5% to 6% of the material into polypropylene, and a predetermined amount of a coloring agent such as a pigment is further mixed by design. Into a pipe by extrusion.

The reason why 1.5% to 6% of talc is mixed into the material at the time of the molding is that the dimensional accuracy such as the wall thickness of each pipe and the circularity of the cross section is uniform with good reproducibility. Therefore, it is considered to be a range that can assist in suppressing high-temperature heat generation of the incinerator when it is incinerated as waste after use.
This is a range required to maintain the accuracy of roundness and to obtain sufficient strength and rigidity against resistance when the film 3 of the pack 1 is pierced, and when only a resin material such as a conventional mode of polypropylene is used. The thickness can be reduced by 10 to 15% as compared with, resulting in a reduction in raw materials, and a wide temperature range in the molding process, which is added to the durability of the molding device and balances with the production temperature. Keep it optimal,
The forming temperature can be easily adjusted, and there is a surface that contributes to the preservation of the working environment. In forming the tapered part and stopper part in the working process, uniform product precision is improved by improving strength and rigidity, and by improving heat resistance. As a result, the handleability at the time of assembling the outer tube 6 'and the inner tube 8' is also improved. If it is less than 1.5%, the strength and rigidity do not increase, and if it exceeds 6%, the strength and rigidity are too strong. If an unexpected impact load is applied, a trouble such as breakage or breakage is likely to occur, and the elasticity is likely to be lacking.

In this way, 1.5 to 6% of talc (talc) is mixed into the polypropylene resin material to extrude the outer tube 6 'and the inner tube 8'.

It is a matter of course that an embodiment in which either one of the outer tube 6 'and the inner tube 8' is made of a polypropylene resin material and talc is not mixed therein can be adopted.

At this time, as described above, the inner tube 8 'has strength and rigidity in order to cope with the resistance when the inner tube 8' pierces the membrane 3 of the suction port 2 of the pack 1 and breaks. It is also possible to adopt a selective mixing ratio in which the mixing ratio is increased to near the upper limit of 6% and the mixing ratio of the outer tube 6 'is reduced to approximately 1.5%.

After the extrusion molding, the outer tube 6 'is formed with a tapered portion 11 at the opening at the distal end thereof, and a ring-shaped V-shaped groove 11' is formed at an intermediate portion thereof. A stopper 12 is formed on the inner tube 8 ', and a tip opening 7 is beveled for the inner tube 8', and a wrapper on the base end is brought into surface contact with the tapered tip portion 11 of the outer tube 6 '. The tapered portion 13 at the end of the mold is subjected to heat molding.

As described above, the strength and rigidity of these forming processes are increased by mixing talc (talc) in the range of 1.5 to 6%, and the thickness thereof is reduced. The heat molding process can be easily performed as designed, and the shape retention after molding can be sufficiently ensured, and highly reliable product accuracy can be maintained.

In mixing talc (talc) into a raw material, in the invention of this application, a predetermined amount of a coloring agent such as a pigment is mixed, whereby the talc (talc) itself is mixed with the talc (talc). The appearance of the grayish dark band color on the straw 10 can be prevented, and the desired colored outer tube 6 'and inner tube 8' can be obtained.

Of course, coloring either or both of the outer tube 6 'and the inner tube 8' with a coloring agent is within the scope of a design change. The raw material, that is, polypropylene alone, or a so-called two-tone type or the like in a state in which talc (talc) is mixed with polypropylene, and the combination color with the beverage stored in the pack 1 is adjusted. It is, of course, within the scope of the design change to select one of the coloring agents according to the combination or the like at the time of integrally welding to the pack 1 via the sealing material 5 and to achieve color tone and shading according to the amount.

Then, the manufactured straw 10 is heat-welded and integrated and set on a diagonal line or the like on the side surface of the pack 1 in a short state in the same manner as in the conventional embodiment shown in FIG.

Therefore, as in the conventional embodiment shown in FIG. 3, the user peels off the sealing material 5 from the pack 1, takes out the straw 10, and slides the inner and outer tubes 6 ', 8' relatively to each other. The inner tube 8 'is pierced into the membrane 3 so that the beveled tip opening 7 of the inner tube 8' is exposed to the inside.
At this time, not only the inner tube 8 'but also the outer tube 6' have sufficient strength and rigidity due to the inclusion of talc (talc) in the material. , Does not bend, retains a straight shape, and even if the inner tube 8 'slides back into the outer tube 6' due to piercing resistance, the trumpet-shaped taper portion at the base end side of the inner tube 8 ' 1
3 engages with the stopper 12 on the proximal end side of the outer tube 6 ', so-called drop-off does not occur. From this point, the straight shape is maintained, and the tapered portion 13 on the proximal end side of the outer tube 6' is formed. Since the peripheral ring-shaped portion slides on the inner surface of the inner tube 8 ',
The sealability at the time of expansion and contraction is maintained, and slide back is unlikely to occur due to the sliding resistance.

At the time of drinking and drinking, the inner tube 8 'is brought into a sufficiently extended posture state with respect to the outer tube 6', and the tapered portions 11 and 13 of both surfaces come into close contact with each other. There is no leak, etc.
No unpleasant phenomena such as generation of unusual noise such as gurgling occur.

Even if the inner tube 8 'slides back inside the outer tube 6' unexpectedly, the tapered portion 13 at the base end of the inner tube 8 'comes into close contact with the inner surface of the outer tube 6' in a ring shape. The appearance of the state that appears, there is no leak of air inside and outside,
The suction action is reliably maintained.

Since one or both of the outer tube 6 'and the inner tube 8' are formed in a predetermined colored state in advance, the consumer can use the talc (talc) according to data such as statistics and surveys. Inhalation can be carried out with a favorable sensation in a color tone harmonized with the beverage without discomfort for dark colors such as gray).

Also, when displaying at a store or the like,
Since the color of the straw 10 does not become unbalanced with that of the pack 1 and the beverage inside, the commercial value is not reduced, and the outer tube 6 'and the inner tube 8' are assembled by a relative layer in the manufacturing process. There is a merit that mistakes do not occur in both cases.

It should be noted that the embodiments of the invention of this application are not limited to the above-described embodiment, and may be applied to, for example, a triple-tube type straw, as well as a single-type straw. Of course, it can be used for straws used in restaurants and dining tables that are not integrated into packs and the like.

[0031]

As described above, according to the invention of this application, in a resin straw basically used for sucking and drinking packed beverages such as milk and juice, a talc (a material such as polypropylene) is used as the material. By adding 1.5% to 6% of talc), its strength, rigidity and heat resistance are inherently improved, and the roundness and thickness reduction in the initial extrusion molding are made as designed. In addition, the secondary molding of the tapered part and stopper is performed with the precision as designed, so that the material thickness of the product can be reduced and the amount of material used can be reduced, resulting in an excellent effect of reducing costs. Is done.

Although the product can be made thinner,
Sufficient strength and rigidity can be maintained, so even if there is resistance etc. when breaking the film such as aluminum foil at the suction port of the pack, sufficient strength and rigidity do not cause bending or breakage etc. Sufficient shape retention in a straight shape is obtained, and sufficient strength and rigidity can be maintained even when the outer tube and inner tube of the double tube type are expanded and contracted by relative slide, and the effect of similarly not being bent There is also.

Further, even if the thickness is reduced during molding, the thickness does not change with time after molding, and an excellent effect that the reliability of the product can be maintained accordingly.

The strength is improved by mixing talc (talc).
The rigidity is improved, and the incinerator can be prevented from raising the temperature during incineration as waste, it can sufficiently cope with pollution issues, the heat resistance of the city product itself is improved, and food safety standards, etc. There is also an effect that can be cleared.

In addition, by mixing a colorant such as a pigment together with talc (talc) into the material, the strength, rigidity and heat resistance of the talc (talc) can be increased. The desired color tone can be imparted without giving the talc (talc) an undesired color tone such as gray, and the color tone in connection with beverages and packs can be selectively adjusted. It is possible to provide an infant or the like with a rather favorable color without giving an unpleasant feeling, which has the effect of increasing the commercial value.

In addition, there is an advantage that there is no mistake in assembling the outer tube and the inner tube at the time of manufacturing, and the combination of the color tone with the pack, tableware, or beverage can be improved in design. There is.

When the amount of talc (talc) mixed is less than 1.5%, the strength and rigidity cannot be sufficiently obtained, and when the amount is more than 6%, the talc becomes excessive. By setting the content to 1.5% and the content of the inner tube to ６6%, there is an effect that the merit of mixing talc (talc) can be reliably exerted to the inner and outer tubes.

[Brief description of the drawings]

FIG. 1 is a sectional view of one embodiment.

FIG. 2 is a perspective view of the same.

FIG. 3 is a schematic perspective view showing a straw attached to a pack.

FIG. 4 is a perspective view of a double-tube straw according to the prior art.

[Explanation of symbols]

 6 'Outer pipe 8' Inner pipe 7 Opening 13 Taper 12 Stopper 10 Straw

Claims (2)

(57) [Claims] 1. An inner tube is inserted into an outer tube so as to be freely slidable in a longitudinal direction, an opening at a front end of the inner tube is beveled, and a rear end opening has a ring-shaped edge sliding on the inner surface of the outer tube. The outer tube has a tapered portion formed at the distal opening of the outer tube, the tapered portion being in contact with the expanded taper of the inner tube, and the proximal portion has the expanded tapered portion of the inner tube. In a resin beverage straw having a stopper that engages with the outer tube , it is confirmed that nearly 1.5% of talc (talc) is mixed in the outer tube with approximately 6% of talc (talc) in the inner tube. Characterized drinking straws. 2. An inner tube is slidably inserted into the outer tube in a longitudinal direction, an opening at a front end of the inner tube is beveled, and an opening at a rear end has a ring-shaped edge sliding on the inner surface of the outer tube. The outer tube has a tapered tapered portion that is in contact with the expanded tapered portion of the inner tube at the distal opening, and a tapered tapered portion that is in contact with the expanded tapered portion of the inner tube at the proximal opening. In a drinking straw made of resin having a matching stopper formed thereon, at least one of the outer tube and the inner tube has a talc (talc) of 1.5%.
A beverage straw, which is mixed in a range of about 6% and further contains a coloring agent in one of the inner tube and the outer tube .