KR102102310B1 - Upper part reinforced paper straw - Google Patents

Abstract

The present invention relates to a paper straw which comprises: a paper tube (10) which is a paper-made fabric surface tube; and a rigid pipe (20) which is a biodegradable pipe coupled to an upper end of the paper tube (10). Therefore, an upper end of the straw with which the user′s mouth comes in direct contact is reinforced and, at the same time, a moist touch can be maintained. According to the present invention, it is possible to fundamentally solve the lack of strength of in the upper end and unpleasant sensation, which were a chronic problem of a conventional paper straw, thereby improving a function of the paper straw and improving user satisfaction.

Description

Upper part reinforced paper straw {UPPER PART REINFORCED PAPER STRAW}

The present invention relates to a paper straw, which is composed of a paper tube made of a paper tube (체 体), a paper tube (紙 管) (10), and a hard tube (20) which is a biodegradable tube coupled to the top of the paper tube (10) , It reinforces the upper part of the straw to which the user's mouth is in direct contact, and at the same time, maintains a tactile feel.

Paper straws are in the spotlight as a substitute for solving environmental pollution caused by plastic straws that are discarded after use, and related patents include Patent No. 515685.

Traditional paper straws, including Patent No. 515685, are completed after the waterproofed paper is bent into a tubular shape and then joined, resulting in sufficient strength when the length of the tubular body becomes longer due to the manufacturing process and the nature of the material. As it can not be used, it was mainly used as a method of constructing multi-stage connectors by mixing with plastic straws.

That is, the paper straw alone does not perform the function as a straw, but its role as an auxiliary material for partially extending or covering an existing plastic straw is limited.

Thus, a multi-row multi-winding object coated with an adhesive has been developed by forming a continuous tube by spirally winding the object and cutting it to a desired length to complete a straw, thereby drying plastic. In addition to exerting the strength comparable to straws, the length of a single tube can be freely set, which makes it possible to position paper straws as beverage straws that can replace plastic straws.

As described above, as sufficient length and dry strength are provided to the paper straw, it has been possible to replace the plastic straw as a straw for beverages, but nevertheless, there is an incomplete point in wet strength and feeling of use.

First, in the wet strength, the strength of the dry state can be sufficiently secured through the manufacture of the object spiral multi-layer winding method, and the strength of the initial wet state can also be expressed at a considerable level, but the moisture is absorbed as the wet state continues. As the paper straw tissue relaxes, its strength deteriorates significantly.

That is, the conventional paper straw expresses strength comparable to that of a conventional plastic straw in a dry state before being put into a beverage, and this strength is temporarily maintained even after being put into a beverage, but the strength decreases with time. The function as a straw is lost.

In addition, even in the surface tactile feeling, the surface feels moisturized in the dry state, but the sensation suddenly deteriorates after being put into a beverage or after the user's saliva is absorbed into the upper part of the straw, deteriorating the feeling of use of the straw and discomfort to the user. Will cause

Particularly, such a deterioration in strength and touch feels rapidly in the upper part of the straw that comes into direct contact with the user's mouth, which can act as an element to avoid the paper straw.

The present invention was devised in consideration of the above-mentioned problems, and is a paper tube fabric tube body having a constant cross section with respect to the entire extension, and a biodegradable rigid tube body coupled to the top of the paper tube 10 Consisting of (20), the lower end of the rigid tube 20 is formed with an intubation portion 21, the inner diameter of the intubation portion 21 coincides with the outer diameter of the branch tube 10, the branch tube to the intubation portion 21 (10) is inserted, the upper portion of the rigid tube 20 is formed with a rear wall portion 22 with an enlarged tube wall compared to the intubation portion 21, a branch pipe at the boundary between the rear wall portion 22 and the intubation portion 21 (10) The upper end is a reinforced paper straw, characterized in that the top is in close contact.

In addition, the paper tube made of a paper-made tube body consisting of a paper tube 10 having a constant cross-section for the entire extension and a hard tube 20 coupled to the top of the paper tube 10 as a biodegradable hard tube body, the hard tube 20 ) In the lower end of the branch pipe 10, an intubation portion 21 having an inner diameter and an outer diameter coinciding with the outer diameter of the branch pipe 10 is formed, and a rear wall portion 22 having a larger tube wall than the intubation portion 21 is formed on the upper portion of the rigid pipe 20. It is formed, the upper wall reinforcement paper straw characterized in that the upper end of the branch pipe (10) is in close contact with the boundary between the rear wall portion (22) and the intubation portion (21).

In addition, the upper portion of the intubation portion 21 is formed with a conical large-sized pointed portion 40 whose outer diameter gradually expands upwards, and the diameter of the upper portion of the branch pipe 10 coupled to the expanded portion 40 gradually expands. (10) The inner circumferential surface and the expanded portion 40, the upper circumferential reinforced paper straw characterized in that the outer circumferential surface is compressed, the upper portion of the expanded portion 40 has the same outer diameter as the upper outer diameter of the expanded portion 40, and the outer diameter is constant upward. To maintain the straight pipe portion 45 is formed, while the diameter of the upper portion of the branch pipe 10 coupled to the straight pipe portion 45 while maintaining a constant enlarged state, the inner surface of the branch pipe 10 and the outer peripheral surface of the straight pipe portion 45 are compressed It is a reinforcing paper straw at the top, characterized by being.

Through the present invention, it is possible to fundamentally solve the lack of strength and unpleasant sensation in the upper end, which was a chronic problem of the conventional paper straw, thereby improving the functionality of the paper straw and improving user satisfaction.

As such, by improving the performance and usability of the paper straws, the spread of the paper straws can be expanded, thereby reducing the use of plastic straws and preventing environmental pollution.

1 is a perspective view of the present invention
2 is a representative cross-sectional view of the present invention
Figure 3 is a partially cut perspective view of a bent-type embodiment of the present invention
4 is a perspective view of an interpolated embodiment of the present invention
5 is a representative cross-sectional view of the embodiment of FIG. 4
Figure 6 is a partial cut-away perspective view of the meshing embodiment of the present invention
7 is an exploded perspective view of a mesh-type embodiment of the present invention to which an inclined protrusion is applied
8 is an exploded perspective view of an embodiment of the present invention to which a point expansion unit is applied
9 is a representative cross-sectional view of the embodiment of FIG. 8
10 is an exploded perspective view of an embodiment of the present invention to which a straight tube portion is applied
11 is a representative cross-sectional view of the embodiment of FIG. 10

When explaining the detailed configuration of the present invention through the accompanying drawings are as follows.

First, Figure 1 shows the appearance of the present invention, as shown, the present invention is a paper tube (紙 管) 10 and a rigid tube (20) made of biodegradable materials such as wood or starch resin ) Is combined.

That is, as shown in FIG. 2, which is a representative cross-sectional view of the present invention, a paper tube 10 having a constant cross-section with respect to the entire extension as a paper-made tube face tube and a top end of the paper tube 10 as a biodegradable hard tube body It is composed of a rigid tube 20 that is coupled to.

As such, the rigid tube 20 is configured at the upper end of the paper straw, so that the strength and feel of the part where the user's mouth is directly in contact can be maintained firmly and well, thereby significantly improving the performance and usability of the paper straw. You can.

As shown in FIG. 2, an intubation portion 21 having an outer diameter and an inner diameter of the branch pipe 10 coinciding with the lower end portion of the rigid pipe 20 coupled to the upper end of the branch pipe 10 is formed. Compared to other parts of the tube 20, the inner diameter is enlarged, and when the hard tube 20 and the branch tube 10 are joined, the outer circumferential surface of the upper end of the branch tube 10 is in close contact with the inner circumferential surface of the intubation part 21. .

In addition, the upper portion of the rigid pipe 20 is formed with a rear wall portion 22 with an enlarged tube wall compared to the intubation portion 21, the upper end of the branch pipe 10 at the boundary between the rear wall portion 22 and the intubation portion 21 As shown in FIG. 2, a stepped jaw is formed at a boundary between the intubation part 21 having an enlarged inner diameter and the posterior wall part 22 having a reduced inner diameter, and this stepped jaw part When the upper end of the branch tube 10 is in close contact, insertion into the hard tube 20 of the branch tube 10 is inhibited.

That is, in the rigid tube 20 of the present invention, the lower intubation portion 21 and the upper rear wall portion 22 have the same outer diameter but different inner diameters, and apparently the intubation portion 21 as shown in FIG. 1. ) And the rear wall portion 22 are not distinguished, but in cross section, a jaw is formed at the boundary between the intubation portion 21 and the rear wall portion 22, and the outer circumferential surface and intubation of the branch tube 10 inserted into the intubation portion 21 are inserted. By the frictional force between the inner circumferential surfaces of the part 21, the coupling state between the hard pipe 20 and the branch pipe 10 can be maintained firmly.

In addition, as the upper end of the branch pipe 10 closely adheres to the boundary between the intubation portion 21 and the rear wall portion 22, additional press-fitting of the branch pipe 10 is inhibited, and the branch pipe 10 excessively pressurized in the process of using the present invention ) Can prevent the phenomenon that the upper end of the hard tube 20 is exposed.

On the other hand, Figure 3 is formed by forming a bend in the rear wall portion 22, to maximize the function as a straw for beverages and to facilitate user convenience, it is coupled between the rigid tube 20 and the branch tube 10 including the intubation part 21 The structure can be applied in the same manner as in FIGS. 1 and 2 described above.

This, the extrapolation of the rigid pipe 20, that is, the structure in which the rigid pipe 20 is coupled to the outside of the branch pipe 10 is due to the friction between the outer peripheral surface of the outer pipe 10 and the inner peripheral surface of the hard pipe 20, the paper pipe 10 ) And the rigid pipe (20) is maintained in the coupling, compared to the rigid pipe (20) relatively soft branch pipe (10) is transversely deformed to the center side of the intubation portion (21) inner circumferential surface and branch (10) outer peripheral surface If the contact area of the liver is reduced, there may be a problem that the bonding force is lost.

Thus, in the present invention, as shown in FIGS. 4 to 11, by applying an interpolation-type structure in which the hard tube 20 is inserted into the branch tube 10, the loss of bonding force due to the shrinkage deformation of the branch tube 10 is fundamentally prevented I was able to do it.

That is, as shown in Figures 4 and 5, the paper tube is a far-end tube body 10 having a constant cross-section with respect to the entire extension, and a hard tube 20 coupled to the upper end of the tube 10 as a biodegradable hard tube body ) Is composed of a paper straw, the lower end of the rigid tube 20 is formed with an intubation portion 21 that matches the inner diameter and the outer diameter of the branch tube 10, and the intubation portion 21 is formed at the upper portion of the rigid tube 20. Compared to the pipe wall, the rear wall portion 22 is enlarged, and the upper end of the branch pipe 10 is in close contact with the boundary between the rear wall portion 22 and the intubation portion 21.

In such an interpolation-type embodiment, the rigid tube 20 of the present invention has the same structure as the inner diameter of the lower intubation part 21 and the upper rear wall part 22 but different outer diameters. Unlike the embodiment of FIG. 3, as shown in FIG. 4, the intubation portion 21 and the rear wall portion 22 may be clearly distinguished in appearance, and formed at the boundary between the intubation portion 21 and the rear wall portion 22 As the upper end of the branch pipe 10 is in close contact with the stepped chin, excessive pressurization of the branch pipe 10 is inhibited.

That is, as shown in Figures 4 and 5, the coupling state of the rigid tube 20 and the branch tube 10 by the frictional force between the inner circumferential surface of the branch pipe 10 and the outer circumferential surface of the intubation portion 21 inserted outside the intubation portion 21 At the same time as being maintained firmly, further press-fitting of the branch pipe 10 is inhibited as the upper end of the branch pipe 10 is in close contact with the boundary between the intubation portion 21 and the rear wall portion 22, and the hard pipe ( 20) It is possible to prevent the phenomenon of excessive press-in into the branch pipe (10).

As such, as the coupling force between the rigid pipe 20 and the branch pipe 10 is maintained due to friction between the outer circumferential surface of the intubation portion 21 of the rigid pipe 20 and the inner circumferential surface of the upper portion of the branch pipe 10, shrinkage deformation is caused in the branch pipe 10 Even when induced, the bonding force can be maintained even more firmly, and the contraction and deformation of the rigid tube 20 coupling portion branch tube 10 itself can be strongly suppressed.

On the other hand, Figures 6 and 7 is a perforated hole 13 in the upper end of the branch pipe 10, and the intubation portion 21 of the hard pipe 20 to form a protrusion 30, the hard pipe 20 and the branch pipe When the (10) is engaged, these protrusions 30 and the restraining holes 13 are engaged with each other, and a meshing embodiment in which the bonding state is maintained firmly is shown.

In this embodiment, in the meshing-type embodiment, the protruding portion 30 protruding outwardly from the outer circumferential surface of the intubation portion 21 and the depressed hole 13 formed in the upper end of the branch pipe 10 are formed to coincide with each other. At the same time, when the hard pipe 20 and the branch pipe 10 are joined, they are located at the same point, that is, when the hard pipe 20 and the branch pipe 10 are joined, the rear wall of the hard pipe 20 in which the upper end of the branch pipe 10 is in close contact By forming the distance from the boundary between the portion 22 and the intubation portion 21 to the protrusion 30 and the distance from the upper end of the branch pipe 10 to the reinforcing hole 13, the hard pipe 20 and the branch pipe ( When engaging 10), the protrusion 30 can be accurately and stably coupled to the restraining hole 13.

Particularly, it is advantageous to form the protrusions 30 and the restraining holes 13 in a circular shape, whereby the bias of stress formed around the restraining holes 13 can be suppressed, and during drilling work, the hard tube 20 ) And during the joining operation of the branch pipe 10, additional cracks around the forcing hole 13 may be blocked during the course of use.

In addition, as shown in FIG. 7, by forming the inclined surface 31 in the lower semicircle of the circular protrusion 30, the protrusion 30 in joining the branch pipe 10 to the intubation 21 of the hard tube 20 It is possible to prevent the rapid deformation of the branch pipe (10) and damage caused by this, it is possible to smooth and stable coupling of the rigid pipe (20) and the branch pipe (10).

As described above, by forming the protruding portion 30 and the restraining hole 13 at the upper end of the intubation portion 21 and the branch pipe 10 of the hard pipe 20, the bonding force between the hard pipe 20 and the branch pipe 10 is secured, The phenomenon that the rigid pipe 20 and the branch pipe 10 are separated during use may be suppressed, but additional processing of a complicated process may be required to form the protrusion 30 and the depressed hole 13, so that productivity decreases. There may be.

Thus, in the present invention, by constructing a point expansion portion 40 in the rigid tube 20 without constructing a separate meshing structure, the binding force between the rigid tube 20 and the branch tube 10 can be increased. The specific embodiments are shown in FIGS. 8 to 11.

First, in the embodiment of applying the point extension 40 shown in FIGS. 8 and 9, a conical large point extension portion 40 in which the outer diameter is gradually enlarged upward is formed on the upper portion of the intubation portion 21, so that the point expansion portion 40 ) Has a structure in which the inner circumferential surface of the branch pipe 10 and the outer circumferential surface of the branch portion 40 are compressed as the diameter of the upper end portion of the branch pipe 10 coupled to) gradually increases.

The binding force between the rigid pipe 20 and the branch pipe 10 in this embodiment of the expansion portion 40 is mainly formed by the frictional force between the upper portion of the expansion portion 40 and the branch pipe 10, and the lower portion of the rigid pipe 20 The intubation portion 21 formed at the lower end portion of the point expansion portion 40 mainly plays a role of inducing a stable coupling in joining the hard pipe 20 to the branch pipe 10. Compared to the intubation portion 21 of the embodiment shown in the extension can be significantly reduced.

That is, as shown in FIG. 8, the branch pipe 10 is formed between the intubation portion 21 and the rear wall portion 22 whose outer diameter coincides with the inner diameter of the branch pipe 10. Likewise, a stepped jaw is formed at the boundary between the point expansion portion 40 and the rear wall portion 22, and as shown in FIG. 9, the upper portion of the branch pipe 10 coupled with the hard pipe 20 passes through the intubation portion 21. As it enters the point expansion unit 40, the diameter gradually expands and deforms, and is stopped and fixed while the top of the branch tube 10 is in close contact with the chin of the boundary portion, which is the starting point of the rear portion 22 and the end point of the expansion unit 40.

Therefore, as in the enlarged portion in the left ellipse of FIG. 9, the inner circumferential surface of the upper portion of the branch pipe 10 deformed and expanded while the fork portion 40 is forcibly press-fit, the outer circumferential surface of the point expansion portion 40 of the hard pipe 20 A high friction force is formed while being strongly adhered to, so that the rigid pipe 20 and the branch pipe 10 can be strongly attached and fixed.

On the other hand, as in the enlarged portion in the right ellipse of FIG. 9, in the process of using the paper straw of the present invention, if the branch pipe 10 moves downward or moves upward, the cone-shaped point expansion portion 40 and the branch pipe 10 upper part Due to the structure, as the inner circumferential surface of the upper end portion of the branch pipe 10 is spaced apart from the outer circumferential surface of the expanding portion 40, frictional force may be rapidly lost.

In the embodiment shown in FIGS. 8 and 9, the binding force between the rigid pipe 20 and the branch pipe 10 is due to the frictional force that presupposes close contact between the upper portion of the branch pipe 10 and the expanded portion 40, the branch pipe (10) Even with a slight separation between the upper inner circumferential surface and the point-expanding portion 40 outer circumferential surface, the binding force may be lost.

Thus, in the present invention, as shown in FIGS. 10 and 11, by additionally configuring the straight pipe portion 45 between the point expansion portion 40 and the rear wall portion 22, the axial direction between the branch pipe 10 and the hard pipe 20 It was made possible to minimize the loss of friction caused by separation.

That is, as shown in Figure 10, the upper portion of the expansion portion 40 has the same outer diameter as the outer diameter of the upper end of the expansion portion 40, the outer diameter is maintained constant to the upper side is formed 45, as shown in FIG. , The inner circumferential surface of the branch pipe 10 and the outer circumferential surface of the straight pipe portion 45 are compressed while maintaining a constant enlarged diameter of the upper portion of the branch pipe 10 coupled to the straight pipe portion 45.

Therefore, as in the enlarged portion in the right ellipse of FIG. 11, even if the branch pipe 10 is slightly displaced downward or the hard pipe 20 is slightly pulled upward, the outer peripheral surface of the straight pipe portion 45 and the upper portion of the branch pipe 10 The contact area between the inner circumferential surfaces can be secured as much as possible, whereby the frictional force between the straight pipe portion 45 and the branch pipe 10 can be preserved.

10: branch
13: Forbidden ball
20: rigid tube
21: intubation
22: rear wall
30: protrusion
31: slope
40: point expansion
45: intuition

Claims (3)

A paper tube 10 having a constant cross-section for the entire extension as a paper-made tube body;
As a biodegradable rigid tube body consisting of a rigid tube 20 coupled to the upper end of the branch tube (10);
The intubation portion 21 is formed at the lower end of the hard tube 20, and the inner diameter of the intubation portion 21 coincides with the outer diameter of the branch pipe 10, so that the branch pipe 10 is inserted into the intubation portion 21;
The upper portion of the hard tube 20 is formed with a rear wall portion 22 having a larger tube wall than the intubation portion 21, and the upper end of the branch pipe 10 is in close contact with the boundary between the rear wall portion 22 and the intubation portion 21. Reinforced paper straw at the top, characterized by being. delete delete

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