KR20220043667A - Manufacturing Method Of Hybrid Paper Straw Having Multiple Coupling Structure, And Hybrid Paper Straw Manufactured By The Same - Google Patents

Abstract

Disclosed are a method for manufacturing a hybrid paper straw having a multi-coupled structure to replace a plastic straw, and a hybrid paper straw manufactured thereby. According to an embodiment of the present invention, the method comprises: a paper supplying step of supplying paper extending in the longitudinal direction and having a multi-layered structure of inner, middle, and outer paper to a cylindrical mandrel having the outer diameter corresponding to the inner diameter of an outer straw or inner straw; a paper overlapping step of overlapping and winding each of 3 to 5 cut paper in a spiral shape around the cylindrical mandrel to form an outer straw or inner straw structure; a paper straw manufacturing step of manufacturing an outer straw or inner straw of a hollow structure by cutting the paper overlapped in the spiral form through the paper overlapping step to a predetermined length; a plastic straw manufacturing step of manufacturing an inner straw or outer straw made of a plastic material and having a hollow structure; a binding structure forming step of forming a structure binding the outer straw and the inner straw manufactured through the paper straw manufacturing step and the plastic straw manufacturing step, respectively, to each other; and a hybrid paper straw assembly step of completing the hybrid paper straw by assembling an inner straw inside the outer straw manufactured in the binding structure forming step.

Description

Manufacturing Method Of Hybrid Paper Straw Having Multiple Coupling Structure, And Hybrid Paper Straw Manufactured By The Same

The present invention relates to a hybrid paper straw manufacturing method and a hybrid paper straw, and more particularly, to a hybrid paper straw manufacturing method including a stretchable multi-stage binding structure and a structure that can ensure hygienic use, and manufactured thereby It is about a hybrid paper straw.

The total amount of plastic produced worldwide is 8.3 billion tons, of which about 6.3 billion tons, or 75%, are discharged as waste. As of 2015, per capita plastic consumption in Korea was 132.7 tons, which is higher than the US (93.8 tons) and Japan (65.8 tons).

Plastics do not decompose in nature and remain as microplastics in the micrometer (μm) unit, adversely affecting the marine ecosystem. Microplastics have the property of absorbing harmful substances in the sea, so they are apt to become food for marine organisms.

Marine organisms mistake plastic pieces for food and suffer from ingestion or getting caught in parts of their body.

As the environmental pollution problem has emerged, efforts have been made to reduce the use of plastic products worldwide. The UK has announced a 25-year plan to eradicate plastic waste, and the British royal family has banned single-use plastics.

Also, in the case of Korea, in August 2018, the Ministry of Environment banned the use of disposable cups or plastics in coffee shops for the reason of reducing the excessive use of disposable products. Depending on the number of violations, fines ranging from 50,000 won to a maximum of 2 million won were imposed.

Paper straws have emerged as an alternative to reducing the use of plastic straws, but they are manufactured only in a straight shape, which causes inconvenience when inhaling beverages, and over time, the strength is significantly lowered, causing a number of problems, such as brittleness.

In order to solve this problem, as shown in FIG. 1 , a paper straw including a structure capable of adjusting an angle has been developed.

Referring specifically to Figure 1, the body portion 10 of a hollow structure formed of a paper material, the inlet portion located at one end of the body portion 10 to introduce the beverage, and the other end of the body portion to allow the beverage to enter the user's mouth. It is characterized in that it includes a wrinkle part 40 that is positioned between the suction part and the inlet part and the suction part to be sucked into and can be selectively bent.

However, the prior art shown in FIG. 1 also has limitations in changing the length in the vertical direction, and in general, it is a common method to attach a straw to beverage containers such as paper cartons and cups and sell the straw in FIG. 1 due to the difference in length. Therefore, it has a structure that is not suitable for such use.

In addition, when using the paper straw shown in Figure 1 to be inserted into the beverage container, there is a problem in that the user's finger has no choice but to contact the outer peripheral surface of the paper straw, hygienic use is not guaranteed.

Accordingly, there is a need for a technique capable of solving the above-mentioned problems according to the prior art.

Korean Patent Publication No. 10-2020-0064709 (published date: June 08, 2020)

An object of the present invention is a hybrid paper straw manufacturing method including a structure that can replace plastic straws, can be biodegradable and recyclable, can practice environmental protection, includes a stretchable structure, and can ensure sanitary use And to provide a hybrid paper straw prepared thereby.

A hybrid paper straw manufacturing method according to an aspect of the present invention for achieving this object is to manufacture a hybrid paper straw having a structure in which an outer straw and an inner straw having different outer diameters and composed of different materials are bound in a stretchable structure As a method of making, after cutting paper having a multi-layer structure of inner, middle and outer edges to a predetermined length and simultaneously winding it into a cylindrical shape, the paper is formed to extend in the longitudinal direction and has an outer diameter corresponding to the inner diameter of the outer straw or inner straw. Paper supply step for supplying the mandrel; Paper overlapping step of applying an adhesive to one side of the paper cut narrowly and then wrapping 3 to 5 cut papers in a spiral shape around each cylindrical mandrel to form an outer straw or inner straw structure ; a paper straw manufacturing step of cutting the paper overlapped in a spiral form to a predetermined length through the paper overlapping step to produce an outer straw or an inner straw having a hollow structure; A plastic straw manufacturing step consisting of a plastic material and manufacturing an inner straw or an outer straw having a hollow structure; a binding structure forming step of forming a structure for binding each other to the outer straw and the inner straw manufactured through the paper straw manufacturing step and the plastic straw manufacturing step; and a hybrid paper straw assembling step of assembling the inner straw inside the outer straw manufactured through the binding structure forming step to complete the hybrid paper straw.

In one embodiment of the present invention, the paper is a material that is harmless to the human body and has a natural decomposition function, the basis weight of the inner is 60 to 150 g/m2, the basis weight of the middle finger is 60 to 150 g/m2, and the The basis weight of the outer paper is 60 to 150 g/m2, and the basis weight of the multi-layered paper in which the inner paper, middle finger, and outer paper are overlapped may have a basis weight of 180 to 450 g/m2.

In one embodiment of the present invention, the outer straw and the inner straw are manufactured to have an outer diameter of 3 to 20 mm, the inner diameter of the outer straw is manufactured to have the same diameter as the outer diameter of the inner straw, and the cylindrical mandrel is manufactured It may have the same outer diameter as the inner diameter of the desired outer straw and inner straw.

In an embodiment of the present invention, in the paper overlapping step, in the process of forming an outer straw and an inner straw structure by overlapping a cylindrical mandrel in a spiral shape as a center, heat at 120 to 200 degrees Celsius is applied to the wound paper. Adhesive curing step of curing the adhesive by applying; may be configured to include.

In one embodiment of the present invention, in the paper straw manufacturing step and the plastic straw manufacturing step, in cutting the outer straw, a part of the upper end is bent inward or rolled to the inner surface and bent to round the upper end shape. In forming the end portion and cutting the inner straw, an inclined portion inclined by a predetermined angle may be formed at the lower end portion.

In one embodiment of the present invention, the forming step of the binding structure comprises: forming a receiving entry part at the lower end of the outer straw to form an accommodating entry part reduced in outer diameter so as to have the same inner diameter as the outer diameter of the inner straw; a seating part forming step of forming a seating part having a structure that can be fixed by seating the upper part of the inner straw adjacent to the receiving entry part; and a axial tube/expanding part forming step of forming a shortened portion having an outer diameter equal to the inner diameter of the receiving entry portion of the outer straw or forming an enlarged portion to have an outer diameter equal to the inner diameter of the receiving portion of the outer straw. It may be a configuration that

In this case, in the step of forming the seating portion, a protruding stopper protruding inward by a predetermined height is formed by pressing from the outer surface of the outer straw to the inside by a predetermined depth, and the protruding stopper formed in the outer straw is an inner straw When is bound to the outer straw, it may be formed at a position corresponding to the upper end of the inner straw.

In addition, the protrusion-type stopper may have a cross-sectional annular structure formed along the inner circumferential surface of the outer straw.

In one embodiment of the present invention, in the hybrid paper straw manufacturing method, a wrinkle portion forming a bellows structure capable of bending the outer straw in a part of the outer straw manufactured through the paper straw manufacturing step or the plastic straw manufacturing step is formed. It may be configured to further include a step;

In one embodiment of the present invention, the hybrid paper straw manufacturing method, after the hybrid paper straw assembling step, protrudes a predetermined length at the lower end of the inner straw to form a hook structure with a hook structure bent to one side. Formation step; may be configured to further include.

In addition, the present invention can provide a hybrid paper straw, characterized in that produced by the hybrid paper straw manufacturing method, the hybrid paper straw according to an aspect of the present invention, the outer straw composed of different materials and It is constituted by a combination of inner straws, and when the outer straw is a paper straw, the inner straw is a plastic straw, and when the outer straw is a plastic straw, the inner straw may be a paper straw.

In one embodiment of the present invention, the paper straw is a tubular structure formed by winding 3 to 5 paper cut into narrow widths in a spiral shape to a thickness of 0.15 to 1.00 mm, and the plastic straw is a plastic resin, PLA, A tubular structure composed of PHA, PHBH, PBS, cellulose or biodegradable polymer resin, wherein the outer straw is a tubular structure having an inner diameter equal to the outer diameter of the inner straw, and the inner straw is 3 to 20 mm It may be a tubular structure having an outer diameter of .

In one embodiment of the present invention, the hybrid paper straw is formed in a structure extending by a predetermined length to the lower end of the outer straw, and is formed by reducing the outer diameter to have the same inner diameter as the outer diameter of the inner straw; and a seating part formed adjacent to the receiving entry part of the lower end of the outer straw and configured to seat and fix the upper part of the inner straw.

In one embodiment of the present invention, the hybrid paper straw, a reduced outer diameter of the lower outer diameter of the inner straw so as to have the same outer diameter as the inner diameter of the receiving entry at the bottom of the inner straw; Alternatively, it may be a configuration that further includes; an enlarged portion of the upper outer diameter of the inner straw so as to have the same outer diameter as the inner diameter of the seating portion at the upper end of the inner straw.

In one embodiment of the present invention, the hybrid paper straw is formed at a position corresponding to the top of the inner straw when the inner straw is bound to the outer straw, and is indented by a predetermined depth from the outer surface of the outer straw to the inside. a protrusion-type stopper having a structure protruding to the inside of the outer straw by a predetermined height and forming an annular structure in a cross-section formed along the inner circumferential surface of the outer straw; and the outer straw is formed at a position corresponding to the lower end of the upper portion of the inner straw when the outer straw is bound to the inner straw, and the outer diameter of the outer straw is reduced to have a continuous inclined structure integrally with the receiving entry part, and the upper portion of the inner straw is located downward It may be a configuration further comprising a; annular stopper to limit the change.

In an embodiment of the present invention, the hybrid paper straw is formed at the upper end of the outer straw, and a part of the upper end is rolled inward and bent to close the upper end in a round shape; and an inclined portion formed by cutting a portion of the lower end of the inner straw and having a structure inclined by a predetermined angle.

In one embodiment of the present invention, the hybrid paper straw is formed on a part of the outer straw, and the outer straw is bent at an angle of 100 degrees or more; .

In one embodiment of the present invention, the hybrid paper straw is formed at the lower end of the inner straw, and extends downward by a predetermined length integrally with the inner straw and has a hook structure bent laterally; further comprising It can be configuration.

As described above, according to the method for manufacturing a hybrid paper straw of the present invention, the paper supply step, the paper overlapping step, the paper straw manufacturing step, the plastic straw manufacturing step, the binding structure forming step, and the hybrid paper straw assembly step performing a specific process. By providing a plastic material composition of 50% or less in the total product composition, it is possible to replace plastic straws, and it can be recycled, so environmental protection can be practiced, and a hybrid paper straw manufacturing method including a stretchable structure can be provided. can

In addition, according to the hybrid paper straw manufacturing method of the present invention, paper formed in a multi-layer structure by overlapping inner, middle and outer papers having a basis weight within a specific range is cut narrowly, an adhesive is applied to one side, and then overlapped in 3-5 layers. By applying heat after curing the adhesive, the shape and strength can be maintained within a certain range even when exposed to water for a long time by maintaining the watertightness of the bonding area of the paper itself. By lengthening the outer surface of the part to be inserted into the tube, it not only has smooth smoothness corresponding to plastic straws, but also maintains its own strength, making it possible to manufacture straws with high bonding strength between the inner and outer paper tubes, allowing users to use them. It can provide a soft feeling of use.

In addition, according to the hybrid paper straw manufacturing method of the present invention, after manufacturing the outer straw and the inner straw having a specific structure, a binding structure of a specific structure is formed at a specific position, thereby securing the stability of the hybrid paper straw assembly structure and at the same time It is possible to provide a hybrid paper straw manufacturing method capable of preventing leakage of beverages flowing through the hybrid paper straw.

In addition, according to the hybrid paper straw of the present invention, by having an outer straw, an inner straw, a receiving entry part, a seating part, an inner straw upper part, a protruding stopper and an annular stopper of a specific structure composed of a paper material and a plastic material, the entire By making the composition of plastic materials less than 50% in the product composition, it is possible to provide a hybrid paper straw that can replace plastic straws and can be separated and recycled after use to practice environmental protection.

In addition, according to the hybrid paper straw of the present invention, it is possible to easily extend or reduce the length by providing an outer straw, an inner straw, a receiving entry part, a seating part, an inner straw upper part, a protruding stopper and an annular stopper of a specific structure. It is possible to provide a hybrid paper straw, and at the same time to ensure the stability of the hybrid paper straw assembly structure, it is possible to provide a hybrid paper straw capable of preventing leakage of beverages flowing through the hybrid paper straw.

In addition, according to the hybrid paper straw of the present invention, by forming a hook structure at the lower end of the inner straw, the inner straw can be extended using the drinking hole of the container without touching the lower end of the inner straw with the user's hand. In this case, it is possible to prevent contamination of the hybrid paper straw by the user's fingers in using the hybrid paper straw, and thus it is possible to provide a hybrid paper straw that guarantees hygienic use.

1 is a perspective view showing a hybrid paper straw according to the prior art.
Figure 2 is a front view showing a hybrid paper straw according to an embodiment of the present invention.
3 is a longitudinal cross-sectional view showing the hybrid paper straw of FIG.
4 is a longitudinal sectional view showing a state in which the entire length of the hybrid paper straw is increased by changing the position of the inner straw of the hybrid paper straw of FIG. 3 downward.
5 is an exploded and assembled cross-sectional view showing a hybrid paper straw according to an embodiment of the present invention.
FIG. 6 is a longitudinal cross-sectional view showing a forming state for each inner straw manufacturing process when the inner straw of FIG. 5 is a paper straw.
7 is a longitudinal cross-sectional view showing a molding state for each inner straw manufacturing process when the inner straw of FIG. 5 is a plastic straw.
8 is a front view showing a hybrid paper straw according to another embodiment of the present invention.
9 is a front view showing a hybrid paper straw according to another embodiment of the present invention.
10 is a partially enlarged view showing various embodiments of the locking protrusion formed at the lower end of the inner straw of FIG.
11 is a schematic diagram showing a state of using the hybrid paper straw shown in FIG.
12 is a schematic diagram showing a state of using the hybrid paper straw shown in FIG.
13 is a flowchart illustrating a hybrid paper straw manufacturing method according to the present embodiment.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings. Prior to this, the terms or words used in the present specification and claims should not be construed as being limited to conventional or dictionary meanings, but should be interpreted as meanings and concepts consistent with the technical spirit of the present invention.

Throughout this specification, when a member is said to be located "on" another member, this includes not only a case in which a member is in contact with another member but also a case in which another member exists between the two members. Throughout this specification, when a part "includes" a certain component, it means that other components may be further included, rather than excluding other components, unless otherwise stated.

FIG. 2 is a front view showing a hybrid paper straw according to an embodiment of the present invention, FIG. 3 is a longitudinal cross-sectional view showing the hybrid paper straw of FIG. 2, and FIG. 4 is the hybrid paper straw of FIG. A longitudinal cross-sectional view is shown in which the overall length of the hybrid paper straw is increased by changing the position of the inner branch pipe downward. In addition, FIG. 5 is an exploded and assembled cross-sectional view showing a hybrid paper straw according to an embodiment of the present invention.

Referring to these drawings, the hybrid paper straw 100 according to the present embodiment has a specific structure of the outer straw 110, the inner straw 120, the receiving entry part 114, the seating part 115, and the upper part of the inner straw. 123, a protruding stopper 112 and an annular stopper 116, a hybrid paper straw that can replace plastic straws, can be easily separated and collected after use, and can be separated and recycled to practice environmental protection can provide

Hereinafter, each configuration constituting the hybrid paper straw 100 according to the present embodiment will be described in detail.

The hybrid paper straw 100 according to the present embodiment is configured by a combination of the outer straw 110 and the inner straw 120 made of different materials.

Specifically, when the outer straw 110 is a paper straw, the inner straw 120 is a plastic straw, and when the outer straw 110 is a plastic straw, the inner straw 120 is a paper straw.

Preferably, the inner straw 120 entering the inside of the beverage container containing the liquid beverage is a plastic straw, and the outer straw 110 exposed to the air may be adopted as a paper straw. In this case, it is possible to prevent in advance the decrease in strength due to moisture penetration of the inner straw 120 which is continuously impregnated in the liquid beverage for a certain period of time.

The paper straw according to this embodiment has a tubular structure formed by spirally rolling 3 to 5 pieces of paper cut into small widths to a thickness of 0.15 to 1.00 mm, and the plastic straw is plastic resin, PLA, PHA, PHBH, PBS, cellulose or It is a tubular structure composed of biodegradable polymer resin.

The outer straw 110 according to the present embodiment preferably has a tubular structure having an inner diameter equal to the outer diameter of the inner straw 120 .

In addition, the inner straw 120 is preferably a tubular structure having an outer diameter of 3 to 20 mm.

Of course, the outer diameters D1 and D2 of the above-mentioned outer straw 110 and inner straw 120 may be adopted in various lengths in consideration of the intended use and environment.

As shown in FIG. 5 , the receiving entry part 114 has a structure formed to extend by a predetermined length L13 at the lower end of the outer straw 110 , and includes an outer diameter D2 of the inner straw 120 and It is preferable to reduce the outer diameter (D1) to have the same inner diameter (d13).

As shown in FIGS. 4 and 5 , the seating part 115 is a configuration formed adjacent to the receiving entry part 114 at the lower end of the outer straw 110 , and is fixed by seating the inner straw upper part 123 . can do it

When the inner straw 120 according to the present embodiment is made of a paper material, as shown in FIG. 6 , a condensed portion 122a may be formed in the inner straw lower portion 122 . Specifically, as shown in FIGS. 5 and 6, the condensed portion 122a of the lower inner straw 122 is formed in a structure extending by a predetermined length to the lower portion of the inner straw 120, and the outer straw ( It is preferable that the lower outer diameter of the inner straw 120 is reduced to have the same outer diameter (D2) as the inner diameter (d13) of the receiving entry portion 114 of the 110).

More specifically, the inner straw 120 is manufactured to have the same outer diameter D2 as the inner diameter d1 of the outer straw 110, as shown in FIG. ) Thereafter, the outer diameter D21 is reduced for the remaining portions except for the upper portion L21 of the inner branch tube 120 to form a condensed portion 122a. ] In this case, it is preferable that the outer diameter D21 of the axial tube portion 122a is the same as the inner diameter d13 of the receiving entry portion 114 of the outer branch tube 110 as described above. Finally, the lower inclined portion 124 having a structure inclined by a predetermined angle may be formed at the lower end of the inner branch pipe 120. ([Formation of inclined portion] in FIG. 6) At this time, the formed lower inclined portion 124 may be A paper straw can be installed by entering the inside of the beverage container through the drinking port of the beverage container in which the beverage to be drunk is stored.

As mentioned above, since the condensed portion 122a of the inner straw 120 is a portion formed by reducing the outer diameter of the inner straw 120 made of paper material, the surface of the condensed portion 122a is treated smoothly. A smooth surface similar to plastic is obtained, and at the same time the water density is increased. In the coupling force between the inner straw and the outer straw, the inner straw 120 having the same outer diameter as the inner diameter of the outer straw 110 can obtain the effect of maintaining the inherent strength of the product, which is not separately molded. In the inner straw 120 according to the embodiment, a hybrid paper straw can be easily installed in the beverage container by using the lower inclined portion 124 having a sufficient strength value, and a lower portion of the inner straw 120 is accommodated in the beverage container. Even if it is impregnated in the liquid beverage for a long time, the strength is not easily reduced, flabby, or damaged, so it is possible to provide the user with convenience in use, and as the inner straw 120 maintains the inherent strength, the outer straw It is possible to sufficiently maintain the binding force with (110).

On the other hand, when the inner straw 120 is made of a plastic material, as shown in FIG. 7 , the expanded portion 121a may be formed on the inner straw upper part 123 . Specifically, the portion 121a expanded to the upper part of the inner straw 123 is formed in a structure extending by a predetermined length L21 to the upper end of the inner straw 120, as shown in FIGS. 5 and 7, It is preferably formed by increasing the outer diameter (D2) of the upper end of the inner straw 120 to have the same outer diameter (D21) as the inner diameter (d12) of the seating portion (115).

When the inner straw 120 is made of a plastic material, the method of expanding the inner straw upper portion 123 includes applying heat at a predetermined temperature for a predetermined time and using a jig having an outer diameter d12 to expand the inner straw. The upper part of (120) can be expanded. Of course, the above-mentioned expansion method is only an example and is not limited thereto.

On the other hand, as shown in FIGS. 3 to 5 , the hybrid paper straw 100 according to the present embodiment may have a configuration including a protruding stopper 112 and an annular stopper 116 having a specific structure.

Specifically, the protrusion-type stopper 112 is formed at a position corresponding to the upper end of the inner straw 120 when the inner straw 120 is bound to the outer straw 110 , and is formed outside the outer straw 110 . It is indented by a predetermined depth from the surface and protrudes to the inside of the outer straw 110 by a predetermined height, and a cross-sectional annular structure formed along the inner circumferential surface of the outer straw 110 may be formed.

The annular stopper 116 is formed at a position corresponding to the lower end of the upper inner straw 123 when the outer straw 110 is bound to the inner straw 120, and the outer diameter of the outer straw 110 is reduced. It is a continuous inclined structure integrally with the receiving entry part 114, and it is possible to restrict the position change of the inner straw upper part 123 downward.

In this case, according to the present embodiment, the outer straw 110, the inner straw 120, the receiving entry part 114, the seating part 115, the inner straw upper part 123, the protruding stopper 112 of a specific structure. And by providing the annular stopper 112, it is possible to provide a hybrid paper straw that can easily extend or reduce the length, secure the stability of the hybrid paper straw assembly structure, and at the same time leak the beverage flowing through the hybrid paper straw It is possible to provide a hybrid paper straw that can prevent .

In some cases, as shown in FIGS. 3 to 5 , an annular end 111 may be formed at the upper end of the outer straw 110 . At this time, the annular end 111 according to the present embodiment is bent by bending a part of the upper end of the external branch pipe 110 inward (111b in FIG. ) It is a structure that rounds the shape of the upper part.

In this case, when the user touches the straw with the lips or the oral cavity, it is possible to prevent a safety accident caused by the sharp cut surface in advance.

In addition, the hybrid paper straw 100 according to this embodiment, as described above, is composed of paper formed by rolling 3 to 5 pieces of paper cut into a spiral shape to a thickness of 0.15 to 1.00 mm. An adhesive is interposed between each layer of the multi-layer structure, which significantly improves the strength of the material constituting the hybrid paper straw 100 .

At the lower end of the hybrid paper straw 100 of this embodiment having remarkably improved strength characteristics, an inclined portion 121 may be formed in a structure inclined by a predetermined angle. In some cases, the inner straw 120 may be composed of a plastic straw, and the inclined portion 121 may be formed at the lower end.

By using the inclined portion 121 according to the present embodiment, you can enter through the drinking port of the beverage container you want to drink, and the inclination angle and the inclined shape of the inclined portion 121 can be variously applied to various beverage containers. Of course, it can be changed.

8 is a front view showing a hybrid paper straw according to another embodiment of the present invention is shown.

Referring to FIG. 8 , the hybrid paper straw 100 according to the present embodiment may further include a wrinkle portion 113 formed in a portion of the outer straw 110 .

Specifically, the wrinkle part 113 according to the present embodiment is capable of bending the outer straw 110 at an angle of 100 degrees or more, as shown in (a), (b), (c) of FIG. 8 . It is preferable to have a Javanese structure. The formation range of the wrinkle part 113 is preferably set in consideration of the thickness, strength and elasticity of the hybrid paper straw 100, and the larger the range of the angle to be bent, the wider the formation range of the wrinkle part 113 is. it is preferable In order to more easily form the wrinkle portion 113, the outer straw 110 may be adopted as a plastic straw.

In this case, according to the present embodiment, by arranging and forming the wrinkle part 113 of a specific structure at a specific position, the position and angle of the upper end of the hybrid paper straw 100 can be easily changed according to the user's intention, so that the user It is possible to provide a hybrid paper straw 100 that can increase the convenience of.

9 is a front view showing a hybrid paper straw according to another embodiment of the present invention, and FIG. 10 is a partially enlarged view showing various embodiments of the locking protrusion formed at the bottom of the inner straw of FIG. , FIG. 11 is a schematic diagram showing a state of using the hybrid paper straw shown in FIG. 9 , and FIG. 12 is a schematic diagram illustrating a state using the hybrid paper straw shown in FIG. 9 .

Referring to these drawings, in the hybrid paper straw 100 according to the present embodiment, a locking protrusion 122 having a specific structure may be formed at the lower end of the inner straw 120 .

Specifically, the locking part 122 according to the present embodiment may have a hook structure that is extended downward by a predetermined length integrally with the inner straw 120 and bent laterally.

As shown in FIG. 10 , the engaging portion 122 may be formed in various shapes using a portion of the lower end of the inner straw 120 . Specifically, Fig. 10 (a) is a state in which the hooking protrusion 122 is formed by bending the pointed part of the lower end of the inner straw 120 outward, and Figs. 10 (b) and (c) are the inner straws ( 120) is a state in which the locking protrusion 122 is formed by cutting one side of the lower end portion and bending it to the side to protrude, and (d) of FIG. It is installed separately.

The structure of the locking part 122 shown in FIG. 10 is only an example and is not limited thereto.

As shown in FIGS. 11 to 12 by using the locking part 122 of this structure, the user's finger does not directly contact the outer surface of the hybrid paper straw 100, and the hybrid paper straw 100 in a drinkable state. can be installed in the beverage container (10).

Specifically, as shown in FIG. 11 , the lower part of the wrapping paper 20b located at the lower end of the inner straw 120 among the wrapping paper 20 of the user's hybrid paper straw 100 is removed. ((a of FIG. 11 ) ), (b)) After the user partially inserts the lower end of the inner straw 120 of the hybrid paper straw 100 through the drinking port 20 of the beverage container 10, the lower end of the inner straw 120 After being caught on the inner upper surface of the drinking tool 20 using the formed locking protrusion 122 (FIG. 11 (c)), grab the upper outer straw 110 of the hybrid paper straw 100 and lift it to the inside The straw 120 is discharged from the outer straw 110 to increase the overall length of the hybrid paper straw 100 (FIG. 11 (d))

The seating state of the inner straw upper part 121 due to the protruding stopper 112 when the inner straw upper part 121 is seated on the receiving part 115 by grabbing the outer straw 110 upper part of the hybrid paper straw 100 and lifting it. can be felt with the user's finger. (FIG. 12 (e)) In addition, it is possible to restrict the inner straw 120 from being discharged downward by the annular stopper 116, so that even through this state, the inner straw 120 can be limited. A state in which the upper part 121 is seated on the seating part 115 may be determined.

As shown in Fig. 12 (f), the hybrid paper straw 100 is introduced into the beverage container 10, and as shown in Fig. 12 (g), by removing the upper portion of the wrapping paper (20a), Even without direct contact with the outer peripheral surface of the hybrid paper straw 100, the hybrid paper straw 100 can be stably installed in the beverage container 10 and then easily consumed. ((h) of FIG. 12)

Therefore, according to this embodiment, by forming the hooking protrusion 122 of the hook structure at the lower end of the inner straw 120, the user's hand can hold the inner straw 120 without contacting the lower end of the inner straw 120. Since it can be extended using the drinking hole of the container, it is possible to prevent contamination of the hybrid paper straw by the user's fingers when using the hybrid paper straw, thereby providing a hybrid paper straw that guarantees hygienic use.

13 is a flowchart showing a hybrid paper straw manufacturing method according to the present embodiment.

13, in the hybrid paper straw manufacturing method (S100) according to the present embodiment, the outer straw 110 and the inner straw 120 having different outer diameters are combined in a flexible structure in a hybrid paper structure. As a method (S100) of manufacturing the straw 100, a paper supply step (S110), a paper overlap step (S120), a paper straw manufacturing step (S130), a binding structure forming step (S150) and hybrid paper performing a specific process It may be configured to include a straw assembly step (S160).

According to this embodiment, the paper supply step (S110), the paper overlap step (S120), the paper straw production step (S130), the plastic straw production step (S140), the binding structure forming step (S150) and the hybrid for performing a specific process. By providing the paper straw assembly step (S160), it is possible to provide a hybrid paper straw manufacturing method including a flexible structure that can replace some plastic straws, can be recycled, can practice environmental protection, and has a stretchable structure.

Hereinafter, each step of configuring the hybrid paper straw manufacturing method (S100) according to the present embodiment will be described in detail with reference to FIG. 13 together with FIGS. 2 to 10 .

Paper supply step (S110) according to this embodiment, is formed to extend in the longitudinal direction, after cutting the paper having a multi-layer structure of inner, middle and outer layers to a width of a predetermined length, through a conveyor (conveyor) to the outer straw ( 110) or a step of supplying each to a cylindrical mandrel having an outer diameter corresponding to the inner diameter of the inner straw 120 .

The above-mentioned paper is a material that is harmless to the human body and has a natural decomposition property, and is preferably a material having a basis weight within a specific range.

For example, as shown in FIG. 3 , the multi-layered paper 101 according to this embodiment may be composed of inner, middle, and outer paper, and each preferably has a basis weight of 60 to 150 g/m 2 . . It is preferable that the total basis weight of the multi-layered paper 101 composed of the inner paper, middle paper and outer paper having these characteristics is set within the range of 180 to 450 g/m 2 .

When the basis weight of the multi-layered paper 101 exceeds 450 g/m 2 , the strength and weight of the hybrid paper straw 100 become excessively large, and the processing characteristics are remarkably deteriorated, which is undesirable.

In addition, when the basis weight of the multi-layered paper 101 is less than 180 g/m 2 , the strength and weight of the hybrid paper straw 100 are insufficient, so that the processing characteristics are significantly reduced, and the hybrid paper straw is not used. It can be easily bent or damaged, which is also undesirable.

In the paper overlapping step (S120), after applying an adhesive to one side of the paper cut to a narrow width, 3 to 5 pieces of the cut paper are overlapped in a spiral form around each cylindrical mandrel and wound to the outer straw 110 ) or forming the inner straw 120 structure.

Specifically, the outer straw 110 and the inner straw 120 produced by the hybrid paper straw manufacturing method (S100) according to this embodiment are manufactured to have an outer diameter of 3 to 20 mm, and the inner diameter of the outer straw 110 is , it is preferable to have the same length as the outer diameter of the inner straw 120 .

In this case, the cylindrical mandrel preferably has the same outer diameter as the inner diameter of the outer straw 110 or inner straw 120 to be manufactured.

In addition, the paper overlapping step (S120) according to the present embodiment may include an adhesive curing step (S121). Specifically, in the adhesive curing step (S121) according to this embodiment, in the process of forming the outer straw 110 or inner straw 120 structure by overlapping the cylindrical mandrel in a spiral shape as the center, It may include a process of curing the adhesive by applying heat of 120 to 200 degrees Celsius.

According to this embodiment, the paper formed in a multi-layer structure by overlapping inner, middle and outer papers having a basis weight within a specific range is cut narrowly, an adhesive is applied to one side, then overlapped in 3-5 layers, and then heat is applied to apply an adhesive. By curing, it is possible to maintain the shape and strength within a certain range even when exposed to water for a long time by maintaining the watertightness of the joint part of the paper itself, and it is possible to manufacture a straw having a smooth smoothness corresponding to a plastic straw, allowing the user to use it. It can provide a soft feeling of use.

The paper straw manufacturing step (S130) is a step of manufacturing the outer straw 110 or the inner straw 120 having a hollow structure by cutting the paper overlapped in a spiral form to a predetermined length through the paper overlapping step (S120).

The plastic straw manufacturing step (S140) is a step of manufacturing the inner straw 120 or the outer straw 110 made of a plastic material and having a hollow structure.

At this time, in cutting the paper straw or plastic straw, a part of the upper end of the outer straw 110 may be bent inward or rolled inward to form an annular end 111 that rounds the upper end shape. In addition, in cutting the inner straw 120, the inclined portion 121 inclined by a predetermined angle may be formed at the lower end.

In addition, after the paper straw manufacturing step (S130) and the plastic straw manufacturing step (S140) according to the present embodiment, a wrinkle part ( A wrinkle portion forming step (S141) for forming 113) may be performed.

The binding structure forming step (S150) is a step of forming a structure in which the outer straw 110 and the inner straw 120 manufactured through the paper straw manufacturing step S130 and the plastic straw manufacturing step S140 are bound to each other, respectively. .

The binding structure forming step (S150) according to the present embodiment comprises a receiving entry section forming step (S151), a seating section forming step (S152), and a shaft pipe/expansion section forming step (S153) for performing a specific process. can be

Specifically, the step of forming the accommodating entry part ( S151 ) performs a process of forming the accommodating entry part 114 , the outer diameter of which is reduced to have the same internal diameter as the external diameter of the inner straw 120 at the lower end of the outer straw 110 . .

The seating portion forming step ( S152 ) includes a process of forming the seating portion 115 having a structure that can be fixed by seating the upper portion of the inner straw 120 adjacent to the receiving entry portion 114 . At this time, it is possible to form the protrusion-type stopper 112 protruding to the inside by a predetermined height by pressing from the outer surface of the outer straw 110 to the inside by a predetermined depth. The protruding stopper 112 formed on the outer straw 110 is preferably formed at a position corresponding to the upper end of the inner straw 120 when the inner straw 120 is bound to the outer straw 110 . In this case, the protrusion-type stopper 112 preferably has a cross-sectional annular structure formed along the inner circumferential surface of the outer straw 110 .

The shaft tube/expansion tube forming step (S153) is divided into a case in which the material constituting the inner straw 120 is paper and a case in which plastic is used.

Specifically, when the inner straw 120 is made of a paper material, as shown in FIG. 6 , the axial tube part/expanding part forming step ( S153 ) is performed by forming the axial tube portion 122a in the lower part of the inner straw 120 . It is a forming step. On the other hand, when the inner straw 120 is made of a plastic material, as shown in FIG. 7 , the shaft/expanded tube forming step ( S153 ) forms the expanded portion 121a on the upper portion of the inner straw 120 . is a step to

According to this embodiment, after manufacturing the outer straw 110 and the inner straw 120 of a specific structure, by forming a binding structure of a specific structure at a specific location, the stability of the hybrid paper straw assembly structure is secured and the hybrid It is possible to provide a hybrid paper straw manufacturing method (S100) that can prevent leakage of beverages flowing through the paper straw.

Hybrid paper straw assembling step (S160), as shown in Figure 5, by assembling the inner straw 120 inside the outer straw 110 manufactured through the binding structure forming step (S150) to complete the hybrid paper straw is a step to

After the hybrid paper straw assembly step (S160), the step of forming a stumbling block (S160) may be further performed.

Specifically, in the step of forming the stumbling protrusion (S160) according to the present embodiment, as shown in FIGS. 7 and 8 , the hook structure protruded by a predetermined length to the lower end of the inner straw 120 and bent to one side. Including the process of forming the locking projection (122).

As shown in FIG. 8 , the engaging portion 122 may be formed in various shapes using a portion of the lower end of the inner straw 120 . Specifically, in Fig. 8 (a) is a state in which the locking projection 122 is formed by bending the pointed part of the lower end of the inner straw 120 outward, and Figs. 8 (b) and (c) are the inner straws ( 120) is a state in which the locking protrusion 122 is formed by cutting one side of the lower end portion and bending it to the side to protrude, and (d) of FIG. It is installed separately.

The structure of the locking part 122 shown in FIG. 8 is only an example, and is not limited thereto.

As shown in FIGS. 9 to 10 by using the hooking part 122 of this structure, the user's finger does not directly contact the outer surface of the hybrid paper straw 100, and the hybrid paper straw 100 in a drinkable state. can be installed in the beverage container (10).

As described above, according to the method for manufacturing a hybrid paper straw of the present invention, the paper supply step (S110), the paper overlap step (S120), the paper straw manufacturing step (S130), and the binding structure forming step (S150) for performing a specific process ) and hybrid paper straw assembling step (S160), can replace plastic straws, can be recycled, can practice environmental protection, and can provide a hybrid paper straw manufacturing method including a stretchable structure.

In the above detailed description of the present invention, only specific embodiments thereof have been described. However, it is to be understood that the present invention is not limited to the particular form recited in the detailed description, but rather, it is to be understood to cover all modifications and equivalents and substitutions falling within the spirit and scope of the present invention as defined by the appended claims. should be

That is, the present invention is not limited to the specific embodiments and descriptions described above, and any person skilled in the art to which the present invention pertains without departing from the gist of the present invention claimed in the claims can implement various modifications are possible, and such modifications shall fall within the protection scope of the present invention.

10: beverage container
11: Drinking phrase
20: wrapping paper
20a: top of wrapping paper
20b: lower part of the wrapping paper
100: hybrid paper straws
101: paper having a multi-layer structure
101a: to
101b: stop
101c: Outland
110: outer straw
111: annular end
112: protruding stopper
113: wrinkles
114: receiving entrance
115: seating part
116: annular stopper
120: inner straw
121: upper inner straw
121a: expanded part
122: lower inner straw
122a: condensed part
123: inclined jaw
124: lower slope
125: stumbling block
S100: Hybrid paper straw manufacturing method
S110: Paper supply step
S120: Paper overlapping step
S121: adhesive curing step
S130: Paper straw manufacturing step
S140: plastic straw manufacturing step
S141: wrinkle forming step
S150: bonding structure forming step
S151: receiving entry part forming step
S152: seating portion forming step
S153: Shaft pipe part / expansion pipe part forming step
S160: Hybrid paper straw assembly step
S170: stumbling block formation step

Claims (5)

As a method of manufacturing a hybrid paper straw having a structure in which the outer straw 110 and the inner straw 120, which have different outer diameters and are made of different materials, are bound in a stretchable structure,
The paper 101 formed to extend in the longitudinal direction and having a multi-layer structure of through 101a, middle 101b and outer paper 101c is cut to a predetermined length and cylindrically wound at the same time, and then the outer straw 110 or the inner Paper supply step (S110) of supplying a cylindrical mandrel having an outer diameter corresponding to the inner diameter of the straw (120);
After applying an adhesive to one side of the paper cut narrowly, 3 to 5 cut papers are overlapped in a spiral shape around each cylindrical mandrel and wound to form an outer straw 110 or an inner straw 120 structure Paper overlapping step to form (S120);
A paper straw manufacturing step (S130) of cutting the paper overlapped in a spiral shape to a predetermined length through the paper overlapping step (S120) to produce the outer straw 110 or the inner straw 120 having a hollow structure;
Plastic straw manufacturing step (S140) of manufacturing the inner straw 120 or the outer straw 110 of a hollow structure composed of plastic resin, PLA, PHA, PHBH, PBS, cellulose or biodegradable polymer resin;
A binding structure forming step (S150) of forming a structure for binding each other to the outer straw 110 and the inner straw 120 manufactured through the paper straw manufacturing step (S130) and the plastic straw manufacturing step (S140); and
A hybrid paper straw assembling step (S160) of assembling the inner straw 120 inside the outer straw 110 manufactured through the binding structure forming step (S150) to complete the hybrid paper straw (S160);
A hybrid paper straw manufacturing method comprising a.
A hybrid paper straw, characterized in that produced by the hybrid paper straw manufacturing method according to claim 1,
The hybrid paper straw is composed of a combination of the outer straw 110 and the inner straw 120 composed of different materials,
When the outer straw 110 is a paper straw, the inner straw 120 is a plastic straw, and when the outer straw 110 is a plastic straw, the inner straw 120 is a paper straw,
The paper straw is a tubular structure formed by rolling 3 to 5 papers cut into narrow widths in a spiral shape to a thickness of 0.15 to 1.00 mm,
The plastic straw is a tubular structure composed of plastic resin, PLA, PHA, PHBH, PBS, cellulose or biodegradable polymer resin,
The outer straw 110 has a tubular structure having an inner diameter equal to the outer diameter of the inner straw 120,
The inner straw 120 is a hybrid paper straw, characterized in that it has a tubular structure having an outer diameter of 3 to 20 mm.
3. The method of claim 2,
The hybrid paper straw,
an accommodating entry part 114 formed at the lower end of the outer straw 110 in a structure extending by a predetermined length, and formed by reducing the outer diameter to have the same inner diameter as the outer diameter of the inner straw 120; and
a seating part 115 formed adjacent to the receiving entry part 114 of the lower end of the outer straw 110 and fixing the upper part 121 of the inner straw by seating it;
Hybrid paper straw, characterized in that it further comprises.
4. The method of claim 3,
The hybrid paper straw,
When the inner straw 120 is bound to the outer straw 110, it is formed at a position corresponding to the upper end of the inner straw 120, and is depressed by a predetermined depth from the outer surface of the outer straw 110 to the outer straw ( 110) a protruding stopper 112 having a structure protruding to the inside by a predetermined height and forming an annular structure in a cross-section formed along the inner circumferential surface of the outer straw 110; and
When the outer straw 110 is bound to the inner straw 120, it is formed at a position corresponding to the lower end of the upper inner straw 121, and the outer diameter of the outer straw 110 is reduced to be integrated with the receiving entry part 114. An annular stopper 116 that is a continuous inclined structure and restricts the inner straw upper 121 from being changed downward;
Hybrid paper straw, characterized in that it further comprises.
3. The method of claim 2,
The hybrid paper straw,
an annular end 111 formed at the upper end of the outer straw 110, bending a part of the upper end inward or rolling inward to close the upper end in a round shape;
a portion of the lower end of the inner straw 120 is cut and formed, and the inclined portion 121 has a structure inclined by a predetermined angle;
It is formed in a portion of the outer straw 110, the outer straw 110, the folds 113 of the bellows structure that can be bent at an angle of 100 degrees or more; and
Formed at the lower end of the inner straw 120, the inner straw 120 and integrally extending downward for a predetermined length, the hooking projection 122 of the bent structure to the side;
Hybrid paper straw, characterized in that it further comprises.

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