JP7085239B2 - Paper straw manufacturing method including multi-stage binding structure and its paper straw - Google Patents

Description

The present invention relates to a paper straw manufacturing method and a paper straw, and more particularly to a paper straw manufacturing method including a structure that includes a stretchable multi-stage binding structure and can guarantee hygienic use, and a paper straw manufactured by the same.

The total amount of plastic produced worldwide is 8.3 billion tons, of which 75%, or about 6.3 billion tons, is discharged as garbage. Based on 2015, South Korea's per capita plastic consumption is 132.7 tons, which is higher than that of the United States (93.8 tons) and Japan (65.8 tons).

Plastics are not decomposed naturally and remain as fine plastics in the order of μm (micrometers), which adversely affects the marine ecosystem. Fine plastics tend to feed on marine organisms because they have the property of absorbing harmful substances in the ocean well.

Marine organisms can be distressed by mistakenly ingesting plastic debris for food or by clogging a part of their body.

With the rise of pollution problems, efforts are underway 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 the use of disposable plastics.

Also, in the case of South Korea, the use of disposable cups or plastics in coffee shops was banned in August 2018 in order to reduce the use of excessive disposable items, and disposable cups or plastics are used in the sales floor. If it is caught, a penalty of 50,000 to 2 million won will be imposed depending on the sales floor area and the number of violations.

Paper straws have emerged as an alternative to reducing the use of plastic straws, but because they are manufactured only in the shape of a "one", they cause inconvenience when inhaling beverages and their strength drops significantly over time. There are many problems, such as being exhausted.

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

Looking at FIG. 1 in detail, the body portion 10 having a hollow structure made of a paper material, the inflow portion where the beverage flows in located at one end of the body portion 10, and the beverage user located at the other end of the body portion. It is characterized by including a suction portion sucked into the mouth and a wrinkle portion 40 located between the inflow portion and the suction portion and capable of selectively bending adjustment.

However, the conventional technique shown in FIG. 1 also has a limit in changing the extension length in the vertical length direction, and generally, a straw may be attached to a beverage container such as a paper pack or a cup for sale. Due to the universal method, the straw in FIG. 1 has a structure that is not suitable for such applications due to the difference in length.

Further, when the paper straw shown in FIG. 1 is used by inserting it into a beverage container, there is a problem that hygienic use is not guaranteed because the user's finger has no choice but to contact the outer peripheral surface of the paper straw.

Therefore, the actual situation is that a technique capable of solving the above-mentioned problems related to the conventional technique is required.

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

An object of the present invention is to be able to replace plastic straws, to be biodegradable and recyclable, to be able to practice environmental protection, to include stretchable structures, and to include structures that can guarantee hygienic use. , A method for producing a paper straw and a paper straw produced by the method.

The paper straw manufacturing method according to one aspect of the present invention for achieving such an object manufactures a paper straw having a structure in which an outer paper tube having different outer diameters and an inner paper tube are bundled in a stretchable structure. A paper having a multi-layered structure of inner paper, inner paper, and outer paper, which is formed so as to extend in the length direction, is cut to a predetermined length width and wound into a cylindrical shape, and then an outer paper tube is used. And the paper supply stage to supply to each unwinder having the corresponding structure with the internal paper tube; after applying the adhesive to one side of the narrowly cut paper, 3 to 5 pieces of cut paper are cylindrical. A paper stacking stage in which the outer paper tube and the internal paper tube structure are formed by spirally stacking and winding around the shape mandrel; a hollow structure by cutting the spirally stacked paper to a certain length through the paper stacking step. Internal / external paper tube manufacturing stage for manufacturing the external paper tube and internal paper tube; a binding structure for forming a structure in which the external paper tube and the internal paper tube manufactured through the internal / external paper tube manufacturing step are bound to each other. The configuration may include a forming step; and a paper straw assembly step of assembling the internal paper tube inside the outer paper tube manufactured through the binding structure forming step to complete the paper straw.

In one embodiment of the present invention, the paper is a material that is harmless to the human body and has a biodegradable function.

The inner paper is weighed 60 to 150 g / m ² , the inner paper is weighed 60 to 150 g / m ² , and the outer paper is weighed 60 to 150 g / m ² . The weighing of the multi-layered paper formed by overlapping the paper and the outer paper can be 180 to 450 g / m ² .

In one embodiment of the present invention, the outer paper tube and the inner paper tube are manufactured with an outer diameter of 3 to 20 mm, and the inner diameter of the outer paper tube is manufactured to be the same as the outer diameter of the inner paper tube, and the cylindrical shape. The mandrel may have a structure having the same outer diameter as the inner diameter of the outer paper tube and the inner paper tube to be manufactured.

In one embodiment of the present invention, the paper stacking step is a process of spirally stacking and winding around a cylindrical mandrel to form an outer paper tube and an internal paper tube structure, and 120 to 200 degrees Celsius on the rolled paper. The configuration may include an adhesive curing step; which cures the adhesive by applying a degree of heat.

In one embodiment of the present invention, in the internal / external paper tube manufacturing stage, in the cutting of the external paper tube, the outer surface of one end of the upper end portion is formed into a round shape and the circular end portion is finished to be round in the direction of the inner surface of the outer paper tube. In the cutting of the internal paper tube, it is possible to form an inclined portion inclined by a predetermined angle at the lower end portion.

In one embodiment of the present invention, the binding structure forming step is a containment approach in which the outer diameter is reduced so that the lower end of the outer paper tube has the same inner diameter as the outer diameter of the contracted portion of the inner paper tube. Accommodating approach forming portion forming portion; mounting portion forming step of forming a mounting portion having a structure in which a non-constricted portion formed on the upper part of the internal paper tube adjacent to the accommodating approach portion is mounted and fixed. And the reduced partial formation step of reducing the outer diameter of the lower part of the inner paper tube so as to have the same outer diameter as the inner diameter of the accommodating approach portion of the outer paper tube; It can be a configuration that includes.

In one embodiment of the present invention, in the mounting portion forming step, a protrusion-type stopper is formed by applying pressure from the outer surface of the external paper tube to the inside by a predetermined depth and protruding inward by a predetermined height, and the external paper is formed. The protruding stopper formed on the tube may be formed at a position corresponding to the upper end of the inner paper tube when the inner paper tube is bound to the outer paper tube.

In this case, the protruding stopper may have a structure having an annular cross section formed along the inner peripheral surface of the outer paper tube.

In one embodiment of the present invention, the paper straw manufacturing method is a wrinkle forming step of forming a bellows structure in which the outer paper tube can be bent into a part of the outer paper tube manufactured through the inner / outer paper tube manufacturing step; Can be a configuration that further includes.

In one embodiment of the present invention, the paper straw manufacturing method involves a hook structure that is extended to the lower end of an internal paper tube by a predetermined length and bent to one side after the paper straw assembly step. The configuration may further include a locking projection forming step;

The present invention can also provide a paper straw produced by the above-mentioned paper straw manufacturing method, wherein the paper straw according to one aspect of the present invention spirals 3 to 5 pieces of paper cut in a narrow width. It is a tubular structure formed by winding around and having a thickness of 0.15 to 1.00 mm, and an outer paper tube having a tubular structure having the same inner diameter as the outer diameter of the inner paper tube; It is a tubular structure formed by winding pieces in a spiral shape to a thickness of 0.15 to 1.00 mm, and has an outer diameter of 3 to 20 mm. An internal paper tube including a contracted portion whose outer diameter is reduced by a predetermined length so as to have an outer diameter of the same size; formed by a structure extending by a predetermined length at the lower end of the outer paper tube. A containment entry portion formed by reducing the outer diameter so as to have the same inner diameter as the outer diameter of the contracted portion of the inner paper tube; and formed adjacent to the accommodation entry portion at the lower end of the outer paper tube. , The configuration may include a non-constricted portion formed on the upper part of the internal paper tube and a mounting portion formed to have a corresponding length and to mount and fix the non-contracted portion.

In one embodiment of the present invention, the paper straw is formed at a position corresponding to the upper end of the non-contracted portion of the internal paper tube when the internal paper tube is bound to the external paper tube, and is formed on the external paper tube. It is a structure that is penetrated from the outer surface to the inside by a predetermined depth and protrudes inside the outer paper tube by a predetermined height, and the cross section formed along the inner peripheral surface of the outer paper tube forms an annular structure. A protruding stopper; and when the external paper tube is bound to the internal paper tube, it is formed at a position corresponding to the lower end of the non-contracted portion of the internal paper tube, and the outer diameter of the external paper tube is reduced to accommodate and enter. It is an inclined structure that is continuous with the portion, and may further include an annular stopper; which restricts the non-contracted portion of the internal paper tube from being repositioned downward.

In one embodiment of the present invention, the paper straw is formed at the upper end portion of the outer paper tube, and a part of the upper end portion is wound inward and bent to round the shape of the upper end portion; and the inner portion. The configuration may further include an inclined portion having a structure in which a part of the lower end portion of the paper tube is cut and formed and inclined by a predetermined angle.

In one embodiment of the invention, the paper straw may further include a bellows-structured wrinkle that is formed in a portion of the external paper tube and is capable of bending the external paper tube at an angle of 100 degrees or more. ..
In one embodiment of the present invention, the paper straw is formed at the lower end of the internal paper tube, and is integrated with the internal paper tube and extends downward by a predetermined length and is bent laterally. It may be configured to further include a stop protrusion;

As described above, the paper straw manufacturing method of the present invention includes a paper supply step, a paper stacking step, an internal / external paper tube manufacturing step, a binding structure forming step, and a paper straw assembly step to carry out a specific process. By doing so, it is possible to replace plastic straws, it is possible to practice environmental protection because it can be recycled, it is convenient to use, and it is also used in various beverage production automated production lines such as packs and cups. It can be used, biodegradable and recyclable, and can provide a method for making paper straws including stretchable functions.

Further, according to the paper straw manufacturing method of the present invention, a paper formed by stacking inner paper, inner paper and outer paper having a weighing within a specific range and having a multi-layer structure is cut into a small width and an adhesive is applied to one side surface. After application, the paper is layered 3 to 5 times and then heat is applied to cure the adhesive. By maintaining the watertightness of the joints of the paper itself, the shape and strength are maintained within a certain range even when exposed to water for a long time. Especially in the case of an internal paper tube, the outer surface of the part where the straw is inserted into the container is formed into a long tube to have a smooth smoothness corresponding to that of a plastic straw, but also to maintain the inherent strength. Therefore, a straw having a high bonding force between the inner paper tube and the outer paper tube can be manufactured, so that a soft feeling of use can be provided to the user.

Further, according to the paper straw manufacturing method of the present invention, the stability of the paper straw assembly structure is ensured by forming a binding structure having a specific structure at a specific position after manufacturing an external paper tube and an internal paper tube having a specific structure. At the same time, it is possible to provide a method for producing a paper straw that can prevent water leakage of a beverage flowing through the paper straw.

Further, according to the paper straw of the present invention, by providing an external paper tube having a specific structure made of a paper material, an internal paper tube, an accommodating approach portion, a mounting portion, a contracted tube portion, a protruding stopper and an annular stopper. It is possible to provide paper straws that can replace plastic straws, are biodegraded after use, and can be separated, collected and recycled, so that environmental protection can be practiced.

Further, according to the paper straw of the present invention, the length can be easily increased by providing an external paper tube having a specific structure, an internal paper tube, an accommodating approach portion, a mounting portion, a non-contracted portion, a protruding stopper and an annular stopper. It is possible to provide a paper straw that can be extended or reduced, and it is possible to provide a paper straw that can ensure the stability of the paper straw assembly structure and prevent water leakage of the beverage flowing through the paper straw.

Further, according to the paper straw of the present invention, by forming the locking projection of the hook structure at the lower end of the inner paper tube, the inner paper tube can be formed without touching the lower end of the inner paper tube by the user's hand. Since it can be extended by utilizing the drinking hole of the container, it is possible to prevent the paper straw from being contaminated by the user's finger when using the paper straw, and it is possible to provide a paper straw that guarantees hygienic use. can.

It is a perspective view which shows the paper straw which concerns on the prior art. It is a front view which shows the paper straw which concerns on one Embodiment of this invention. It is a vertical sectional view which shows the paper straw of FIG. FIG. 3 is a vertical cross-sectional view showing a state in which the internal paper tube of the paper straw of FIG. 3 is repositioned downward to increase the length of the entire paper straw. It is a disassembled assembly sectional view which shows the paper straw which concerns on one Example of this invention. FIG. 5 is a vertical cross-sectional view showing a process of manufacturing an internal paper tube of the paper straw shown in FIG. It is a front view which shows the paper straw which concerns on still another Embodiment of this invention. It is a front view which shows the paper straw which concerns on still another Embodiment of this invention. It is a schematic diagram which shows the state of using the paper straw shown in FIG. It is a schematic diagram which shows the state of using the paper straw shown in FIG. It is a flowchart which shows the paper straw manufacturing method which concerns on this Example.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings. Prior to this, the terms and words used in the present specification and the claims are not construed as being limited to ordinary or lexical meanings, but as meanings and concepts consistent with the technical idea of the present invention. To.

In the whole of the present specification, when one member is located "on" another member, this is not only when one member is in contact with another member, but also between both members. Including the case where a member is present. In the whole of the present specification, when a part "includes" a component, this does not exclude other components but may further include other components unless otherwise specified. Means.

FIG. 2 shows a front view showing a paper straw according to an embodiment of the present invention, FIG. 3 shows a vertical sectional view showing the paper straw of FIG. 2, and FIG. 4 shows FIG. A vertical cross-sectional view showing a state in which the internal paper tube of the paper straw is repositioned downward to increase the length of the entire paper straw is shown. Further, FIG. 5 shows a disassembled and assembled cross-sectional view showing a paper straw according to an embodiment of the present invention, and FIG. 6 shows a process of manufacturing an internal paper tube of the paper straw shown in FIG. A vertical sectional view is shown.

With reference to these drawings, the paper straw 100 according to the present embodiment has an external paper tube 110 having a specific structure, an internal paper tube 120, an accommodating approach portion 114, a mounting portion 115, a non-contracted portion 121, and a protruding stopper. By providing the 112 and the annular stopper, it is possible to replace the plastic straw, and it is possible to provide a paper straw that can be biodecomposed after use and can be separated, recovered and recycled, so that environmental protection can be practiced.

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

As shown in FIGS. 2 and 3, the external paper tube 110 according to the present embodiment is formed by spirally winding 3 to 5 pieces of paper cut in a small width to a thickness of 0.15 to 1.00 mm. It is a tubular structure.

The internal paper tube 120 is a tubular structure formed by spirally winding 3 to 5 pieces of paper cut in a small width to a thickness of 0.15 to 1.00 mm. At this time, the internal paper tube 120 preferably has a tubular structure having an outer diameter of 3 to 20 mm.

Needless to say, the outer diameters D1 and D2 of the outer paper tube 110 and the inner paper tube 120 can be adopted in various lengths in consideration of the intended use and environment.

As shown in FIG. 5, the accommodating approach portion 114 has a structure formed at the lower end of the outer paper tube 110 by a predetermined length L13, and the outer diameter of a corresponding portion of the inner paper tube 120 is reduced. It is preferable that the contracted tube portion 122 is formed so as to have the same inner diameter d13 as the outer diameter D21.

As shown in FIG. 6, the internal paper tube 120 according to the present embodiment is manufactured so as to have a small outer diameter D2 that is the same as the inner diameter d1 of the outer paper tube 110 ([paper tube manufacturing] step of FIG. 6). ). After that, the outer diameter D21 is reduced with respect to the remaining portion of the inner paper tube 120 excluding the upper part L21 to form the reduced tube portion 122 ([contracted partial forming, locking step] in FIG. Formation] step). At this time, it is preferable that the outer diameter D21 of the contracted tube portion 122 has the same outer diameter as the inner diameter d13 of the accommodating approach portion 114 of the outer paper tube 110 as described above. Finally, the lower end inclined portion 124 having a structure inclined by a predetermined angle can be formed at the lower end portion of the internal paper tube 120 ([inclined portion forming] step in FIG. 6). At this time, the 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 by using the formed lower end inclined portion 124.

As described above, since the reduced tube portion 122 of the inner paper tube 120 is a portion formed by reducing the outer diameter of the inner paper tube, the surface of the reduced tube portion 122 is smoothly treated to be as smooth as plastic. The water density increases with the surface. As for the bonding force between the inner paper tube and the outer paper tube, it is possible to obtain the effect of maintaining the strength peculiar to the product which is not separately molded in the inner paper tube 120 having the same outer diameter as the inner diameter of the outer paper tube. As a result, the internal paper tube 120 according to the present embodiment can easily install the paper straw in the beverage container by utilizing the lower end inclined portion 124 having a sufficient strength value, and a part of the lower part of the internal paper tube 120. Even if the liquid beverage stored inside the beverage container is impregnated for a long time, it does not easily lose its strength or become crumpled and damaged, so that it is possible to provide the user with convenience in use. By maintaining the strength inherent in the inner paper tube 120, the bonding force with the outer paper tube 110 can be sufficiently maintained.

On the other hand, as shown in FIGS. 3 to 5, the paper straw 100 according to the present embodiment may have a configuration including a protrusion-type 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 non-contracted portion 121 located at the upper part of the internal paper tube 120 when the internal paper tube 120 is bound to the external paper tube 110. The structure is such that the outer surface of the outer paper tube 110 is penetrated into the inside by a predetermined depth and protrudes inside the outer paper tube 110 by a predetermined height, along the inner peripheral surface of the outer paper tube 110. The formed cross section can form an annular structure.

The annular stopper 116 is configured to be formed at the lower end of the non-contracted portion 121 of the inner paper tube 120, that is, at a position corresponding to the inclined step 123 when the outer paper tube 110 is bound to the inner paper tube 120. The annular stopper 116 has an inclined structure in which the outer diameter of the outer paper tube 110 is reduced and is integrally continuous with the accommodating approach portion 114. The annular stopper 116 can come into contact with the inclined step 123 of the internal paper tube 120 to limit the downward movement allowable range of the internal paper tube.

In this case, according to the present embodiment, the outer paper tube 110, the inner paper tube 120, the accommodating approach portion 114, the mounting portion 115, the non-contracted portion 121, the protruding stopper 112, and the annular stopper 112 are provided. By doing so, it is possible to provide a paper straw that can be easily extended or reduced in length, to ensure the stability of the paper straw assembly structure, and to provide a paper straw that can prevent water leakage of beverages flowing through the paper straw. Can be done.

In some cases, as shown in FIGS. 3 to 5, an annular end portion 111 can be formed at the upper end portion of the outer paper tube 110. At this time, the annular end portion 111 according to the present embodiment is bent inward by partially bending the upper end portion of the outer paper tube 110 (111b in FIG. 3B), or is wound around the inner side surface and bent (FIG. 3A). ) 111a), the structure is such that the shape of the upper end is rounded.

In this case, it is possible to prevent a safety accident caused by a cut surface having a sharp structure when the straw is brought into contact with the lips or the oral cavity by the user, and at the same time, the internal paper tube 120 is subjected to an unintended external force from the external paper tube 110. It is possible to prevent the person from leaving the outside.

Further, as described above, the paper straw 100 according to the present embodiment is composed of paper formed by winding 3 to 5 pieces of paper cut in a small width in a spiral shape and having a thickness of 0.15 to 1.00 mm. As a result, an adhesive is interposed between the layers of each of the multilayer structures constituting the paper, and the strength of the material constituting the paper straw 100 is remarkably improved.

An inclined portion 121 may be formed at the lower end portion of the paper straw 100 of the present embodiment, which has significantly improved strength characteristics, with a structure inclined by a predetermined angle.

The inclined portion 121 according to the present embodiment can be used to open the drinking port of the beverage container to be drunk to enter, and the inclined angle and the shape of the inclined portion 121 can be applied to various beverage containers. Needless to say, it can be changed in various ways.

FIG. 7 is a front view showing a paper straw according to still another embodiment of the present invention.

Referring to FIG. 7, the paper straw 100 according to the present embodiment may further include a wrinkle portion 113 formed in a part of the outer paper tube 110.

Specifically, the wrinkle portion 113 according to the present embodiment can bend the external paper tube 110 at an angle of 100 degrees or more as shown in FIGS. 7A, 7B, and 7C. It preferably has a bellows structure. The formation range of the wrinkle portion 113 is preferably set in consideration of the thickness, strength and elasticity of the paper straw 100, and the larger the range of the angle to be bent, the wider the formation range of the wrinkle portion 113 is preferable. ..

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

FIG. 8 shows a front view showing a paper straw according to still another embodiment of the present invention, and FIG. 9 shows a schematic view showing how the paper straw shown in FIG. 8 is used. FIG. 10 shows a schematic diagram showing how the paper straw shown in FIG. 8 is used.

With reference to these drawings, the paper straw 100 according to the present embodiment can form a locking projection 125 having a specific structure at the lower end portion of the internal paper tube 120.

Specifically, the locking projection 125 according to the present embodiment may have a hook structure that is integrated with the internal paper tube 120 and extends downward by a predetermined length and is bent laterally.

As shown in FIGS. 9 to 10, using the locking projection 125 having such a structure, the paper straw 100 can be drunk without the user's finger directly touching the outer surface of the paper straw 100. Can be installed in the beverage container 10.

Specifically, as shown in FIG. 9, the lower portion 20b of the wrapping paper located on the lower end side of the inner paper tube 120 is removed from the wrapping paper 20 of the user's paper straw 100 ((FIG. 9). a), see (b)). The user partially inserts the lower end of the inner paper tube 120 of the paper straw 100 through the drinking port 20 of the beverage container 10, and then uses the locking projection 125 formed on the lower end of the inner paper tube 120 to use the drinking port 20. After being locked to the inner upper surface of the paper straw ((c) in FIG. 9), the upper part of the outer paper tube 110 of the paper straw 100 is grasped and lifted, and the inner paper tube 120 is ejected from the outer paper tube 110. This will increase the overall length of the paper straw 100 ((d) in FIG. 9).

When the non-constricted portion 121 is mounted on the mounting portion 115 by grasping and lifting the upper portion of the external paper tube 110 of the paper straw 100, the mounted state of the non-contracted portion 121 by the protrusion type stopper 112 is used. It can be felt with a person's finger ((a) in FIG. 10). Further, since the annular stopper 116 can limit the internal paper tube 120 from being discharged further downward, it is possible to determine the state in which the portion 121 that has not been contracted is mounted on the mounting portion 115 even through this state. Can be done.

As shown in FIG. 10 (b), the paper straw 100 is allowed to enter the inside of the beverage container 10 and the upper portion 20a of the wrapping paper is removed as shown in FIG. 10 (c). Even if the outer peripheral surface of the straw 100 is not in direct contact with the paper straw 100, the paper straw 100 can be easily drunk after being stably installed in the beverage container 10. ((D) in FIG. 10)

Therefore, according to this embodiment, by forming the locking projection 125 of the hook structure at the lower end of the inner paper tube 120, the inner paper tube does not have to be touched by the user's hand at the lower end of the inner paper tube 120. Since the 120 can be extended by utilizing the drinking hole of the container, it is possible to prevent the paper straw from being contaminated by the user's finger in the use of the paper straw, and the paper straw that guarantees hygienic use is provided. be able to.

FIG. 11 shows a flowchart showing a paper straw manufacturing method according to this embodiment.

As shown in FIG. 11, the paper straw manufacturing method S100 according to the present embodiment is a paper straw 100 having a structure in which an outer paper tube 110 having different outer diameters and an inner paper tube 120 are bundled in a stretchable structure. The manufacturing method S100 may include a paper supply step S110, a paper stacking step S120, an internal / external paper tube manufacturing step S130, a binding structure forming step S140, and a paper straw assembly step S150 to carry out a specific process. ..

According to this embodiment, the plastic straw is provided with a paper supply step S110, a paper stacking step S120, an internal / external paper tube manufacturing step S130, a binding structure forming step S140, and a paper straw assembly step S150 to carry out a specific process. Can be used as an alternative, biodegradable and recyclable, so environmental protection can be practiced, and a paper straw manufacturing method including a stretchable structure can be provided.

Hereinafter, with reference to FIGS. 2 to 8, each step constituting the paper straw manufacturing method S100 according to the present embodiment will be described in detail.

The paper supply stage S110 according to the present embodiment is formed so as to extend in the length direction, and paper having a multi-layer structure of inner paper, inner paper, and outer paper is cut to a width of a predetermined length and wound into a cylindrical shape. Later, it is a stage of supplying to each unwinder having a structure corresponding to the outer paper tube and the inner paper tube.

The paper is a material that is harmless to the human body and has natural decomposition characteristics, and is preferably a material having a weighing within a specific range.

For example, as shown in FIG. 3, the multi-layered paper 101 according to the present embodiment may be composed of an inner paper, an inner paper, and an outer paper, and each has a weighing of 60 to 150 g / m ² . The weighing of the multi-layered paper 101 composed of the inner paper, the inner paper and the outer paper having such characteristics is preferably set within the range of 180 to 450 g / m ² .

When the weighing of the multi-layered paper 101 exceeds 450 g / m ² , the strength and weight of the paper straw 100 become excessively large and the processing characteristics are significantly deteriorated, which is not preferable.

Further, when the weighing of the multi-layered paper 101 does not reach 180 g / m ² , the strength and weight of the paper straw 100 are insufficient, so that not only the processing characteristics are significantly deteriorated but also the paper straw is easy to use. This is also not desirable as it can bend or be damaged.

In the paper stacking stage S120, after applying an adhesive to one side surface of paper cut in a small width, three to five pieces of cut paper are spirally stacked around each cylindrical mandrel and wound to form an external paper. This is the stage of forming the tube 110 and the internal paper tube 120 structure.

Specifically, the outer paper tube 110 and the inner paper tube 120 manufactured by the paper straw manufacturing method S100 according to the present embodiment are manufactured with an outer diameter of 3 to 20 mm, and the inner diameter of the outer paper tube 110 is the inner paper tube. It is preferably manufactured to the same standard as the outer diameter of 120.

At this time, it is preferable that the cylindrical mandrel has the same outer diameter as the inner diameter of the outer paper tube 110 and the inner paper tube 120 to be manufactured.

Further, the paper stacking step S120 according to this embodiment can include an adhesive curing step S121. Specifically, in the adhesive curing step S121 according to the present embodiment, the rolled paper is wound in a process of spirally overlapping and winding around a cylindrical mandrel to form an outer paper tube 110 and an inner paper tube 120 structure. Can include the process of applying heat of 120 to 200 degrees Celsius to cure the adhesive.

According to this embodiment, paper formed by stacking inner paper, inner paper and outer paper having a weight within a specific range and having a multi-layer structure is cut into small widths, and then an adhesive is applied to one side surface, and then 3 to 5 By applying heat to cure the adhesive after stacking it in layers, the shape and strength of the paper can be maintained within a certain range even when exposed to water for a long time by maintaining the watertightness of the joints of the paper itself. Since a straw having a smooth surface corresponding to the above can be produced, a soft feeling of use can be provided to the user.

The internal / external paper tube manufacturing step S130 is a step of cutting the spirally stacked papers to a certain length through the paper stacking step S120 to manufacture the outer paper tube 110 and the inner paper tube 120 having a hollow structure.

At this time, when cutting the outer paper tube 110, it is possible to form an annular end portion 111 in which a part of the upper end portion is rounded inward. Further, in cutting the internal paper tube 120, an inclined portion 121 inclined by a predetermined angle can be formed at the lower end portion.

Further, after the internal / external paper tube manufacturing step S130 according to the present embodiment, the wrinkled portion of the bellows structure capable of bending the external paper tube 110 into a part of the external paper tube 110 manufactured through the internal / external paper tube manufacturing step S130. The wrinkle forming step S131 forming 113 can be performed.

The binding structure forming step S140 is a step of forming a structure in which the outer paper tube 110 and the inner paper tube 120 manufactured through the inner / outer paper tube manufacturing step S130 are bound to each other.

The cohesive structure forming step S140 according to the present embodiment may be configured to include a containment approach forming step S141, a mounting section forming step S142, and a contracted partial forming step S143 that carry out a specific process.

Specifically, the accommodation entry portion forming step S141 carries out a process of forming the accommodation entry portion 114 whose outer diameter is reduced so as to have the same inner diameter as the outer diameter of the inner paper tube 120 at the lower end of the outer paper tube 110. do.

The mounting portion forming step S142 includes a process of forming a mounting portion 115 having a structure in which a non-contracted portion 121 formed on the upper portion of the internal paper tube 120 adjacent to the accommodating approach portion 114 can be mounted and fixed. At this time, it is possible to form a protruding stopper 112 that protrudes inward by a predetermined height by applying pressure to the inside from the outer surface of the external paper tube 110 by a predetermined depth. The protruding stopper 112 formed on the outer paper tube 110 is formed at a position corresponding to the upper end of the non-contracted portion 121 of the inner paper tube 120 when the inner paper tube 120 is bound to the outer paper tube 110. Is preferable. At this time, it is preferable that the protrusion-type stopper 112 has an annular structure in a cross section formed along the inner peripheral surface of the outer paper tube 110. At the same time, it is also possible to utilize the characteristics of the stretchable paper to configure it without the protrusion-type stopper 112.

As shown in FIGS. 5 and 6, the contracted partial forming step S143 is located at the lower part of the inner paper tube 120 so as to have the same outer diameter D21 as the inner diameter d13 of the accommodating approach portion 114 of the outer paper tube 110. The process of reducing the outer diameter to form the contracted portion 122 is included.

Specifically, as shown in FIG. 6, the internal paper tube 120 according to the present embodiment is manufactured so as to have an outer diameter D2 which is 0.03 to 0.05 mm smaller than the inner diameter d1 of the outer paper tube 110. ([Paper tube manufacturing] process in FIG. 6). After that, the outer diameter D21 is reduced with respect to the remaining portion of the inner paper tube 120 excluding the upper part L21 to form the reduced tube portion 122 ([contracted partial forming, locking step] in FIG. Formation] step). At this time, it is preferable that the outer diameter D21 of the contracted tube portion 122 has the same outer diameter as the inner diameter d13 of the accommodating approach portion 114 of the outer paper tube 110 as described above. Finally, the lower end inclined portion 124 having a structure inclined by a predetermined angle can be formed at the lower end portion of the internal paper tube 120 ([inclined portion forming] step in FIG. 6). At this time, the 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 by using the formed lower end inclined portion 124.

As described above, the surface of the contracted tube portion 122 of the inner paper tube 120 is smoothly treated to obtain a smooth surface similar to that of plastic, and the water density is increased. It is possible to obtain the effect of maintaining the strength peculiar to the product which is not separately molded in the inner paper tube 120 having the same outer diameter as the inner diameter of the paper tube. As a result, in the internal paper tube 120 according to the present embodiment, the paper straw can be easily installed in the beverage container by using the lower end inclined portion 124 having a sufficient strength value, and a part of the lower portion of the internal paper tube 120 is formed. Even if the liquid beverage stored inside the beverage container is impregnated for a long time, its strength does not easily decrease or it does not become crumpled and damaged, and it is sufficient when the internal paper tube and the external paper tube are stretched and used. By guaranteeing the cohesive strength, it is possible to provide the user with convenience in use.

According to this embodiment, after the outer paper tube 110 and the inner paper tube 120 having a specific structure are manufactured, a binding structure having a specific structure is formed at a specific position to ensure the stability of the paper straw assembly structure and the paper straw. It is possible to provide a paper straw manufacturing method S100 capable of preventing water leakage of a beverage flowing through the straw.

As shown in FIG. 5, the paper straw assembly step S150 is a step of assembling the inner paper tube 120 inside the outer paper tube 110 manufactured through the binding structure forming step S140 to complete the paper straw.

After the paper straw assembly step S150, the locking projection forming step S160 may be further performed.

Specifically, as shown in FIGS. 7 and 8, the locking projection forming step S160 according to the present embodiment is extended to one side by a predetermined length at the lower end of the internal paper tube 120. Including the process of forming the locking projection 125 of the bent hook structure.

As described above, according to the paper straw manufacturing method of the present invention, the paper supply step S110, the paper stacking step S120, the internal / external paper tube manufacturing step S130, the binding structure forming step S140, and the paper straw assembly that carry out a specific process. By providing step S150, plastic straws can be replaced, biodecomposable and recyclable, so environmental protection can be practiced, including stretchable structures, as well as pack and cup forms, etc. Various beverage production automated production lines can provide a method for producing paper straws capable of adhering straws to containers.

In the above detailed description of the present invention, only special examples thereof have been described. However, the invention is not limited to the particular embodiments referred to in the detailed description, but rather all variants and equivalents and alternatives within the spirit and scope of the invention as defined by the appended claims. Including things.

That is, the present invention is not limited to the specific examples and description described above, and any person who has ordinary knowledge in the technical field to which the present invention belongs without departing from the gist of the present invention claimed within the scope of claims. Anyone can carry out a variety of modifications, such modifications are within the scope of the invention.

10: Beverage container 11: Drinking mouth 20: Wrapping paper 20a: Upper part of wrapping paper 20b: Lower part of wrapping paper 100: Paper straw 101: Paper with multi-layer structure 101a: Inner paper 101b: Inner paper 101c: Outer paper 110: External Paper tube 111: Circular end 112: Protruding stopper 113: Wrinkle part 114: Containment entry part 115: Mounting part 116: Circular stopper 120: Internal paper tube 121: Non-constricted part 122: Shrinked part 123 : Inclined stage 124: Lower end inclined portion 125: Locking protrusion S100: Paper straw manufacturing method S110: Paper supply stage S120: Paper stacking stage S121: Adhesive curing stage S130: Internal / external paper tube manufacturing stage S131: Wrinkle formation stage S140: Bundling structure formation stage S141: Containment entry part formation stage S142: Mounting part formation stage S143: Shrinked partial formation stage S150: Paper straw assembly stage S160: Locking protrusion formation stage

Claims (3)

A method (S100) for manufacturing a paper straw having a structure in which an outer paper tube (110) and an inner paper tube (120) having different outer diameters are bundled in a stretchable structure.
After cutting a paper having a multi-layer structure of inner paper, inner paper and outer paper with a width of a predetermined length, which is formed so as to extend in the length direction, the inner diameters of the outer paper tube (110) and the inner paper tube (120) are formed. Paper supply stage (S110) to supply each cylindrical mandrel having a corresponding outer diameter.
After applying the adhesive to one side of the paper cut in a small width, 3 to 5 pieces of cut paper are spirally stacked around each cylindrical mandrel and wound around the outer paper tube (110) and the inside. Paper stacking stage (S120) forming a paper tube (120) structure;
An internal / external paper tube manufacturing step for manufacturing an external paper tube (110) and an internal paper tube (120) having a hollow structure by cutting spirally stacked papers to a certain length through the paper stacking step (S120). (S130);
The binding structure forming step (S140); and the binding structure forming step (S140);
A paper straw assembly stage (S150) in which an internal paper tube (120) is assembled inside an external paper tube (110) manufactured through the binding structure forming step (S140) to complete a paper straw;
A paper straw manufactured by a paper straw manufacturing method containing
The inner paper, the inner paper, and the outer paper are 60 to 150 g / m ² , and the paper having the multilayer structure is 180 to 450 g / m ² .
The paper straw (100) is
It is a tubular structure formed by spirally winding 3 to 5 pieces of paper cut into small widths to a thickness of 0.15 to 1.00 mm, and has the same inner diameter as the outer diameter of the inner paper tube (120). External paper tube with tubular structure (110);
It is a tubular structure formed by spirally winding 3 to 5 pieces of paper cut in a small width to a thickness of 0.15 to 1.00 mm, and has a tubular structure having an outer diameter of 3 to 20 mm. An internal paper tube (122) including a contracted portion (122) whose outer diameter is reduced by a predetermined length so as to have an outer diameter of the same size as the inner diameter of the accommodation entry portion (114) of the paper tube (110). 120);
The outer diameter is formed at the lower end of the outer paper tube (110) by a predetermined length so as to have the same inner diameter as the outer diameter of the contracted portion (122) of the inner paper tube (120). Containment approach (114) formed by shrinking; and
It is formed adjacent to the accommodating approach portion (114) at the lower end of the outer paper tube (110) and has a length corresponding to the non-constricted portion (121) formed in the upper part of the inner paper tube (120). Includes a mounting portion (115); for mounting and fixing a formed and non-constricted portion (121).
Further, the paper straw (100) is
When the internal paper tube (120) is bound to the external paper tube (110), it is formed at a position corresponding to the upper end of the non-contracted portion (121) of the internal paper tube (120), and is formed at a position corresponding to the outer end of the external paper tube (110). ), It is a structure that is penetrated into the inside by a predetermined depth and protrudes inside the outer paper tube (110) by a predetermined height, and is formed along the inner peripheral surface of the outer paper tube (110). A protruding stopper (112) whose cross section forms an annular structure; and
When the outer paper tube (110) is bound to the inner paper tube (120), the inclined step (123) is connected to the lower end of the non-reduced portion (121) of the inner paper tube (120) and is gradually reduced in diameter. ), The outer diameter of the outer paper tube (110) is reduced to form a continuous inclined structure integrated with the accommodating approach portion (114), and the inner paper tube (120) is contracted. Further includes an annular stopper (116); which restricts the missing portion (121) from being repositioned downwards.
There is a gap between the annular stopper (116) and the inclined step (123), and the inclined step (123) is curved.
A paper straw that features that. The paper straw (100) is
An annular end portion (111) formed at the upper end portion of the external paper tube (110), in which a part of the upper end portion is wound inward to finish the shape of the upper end portion in a round shape;
A portion of the lower end portion of the internal paper tube (120) is cut and formed, and further includes an inclined portion (124) having a structure inclined by a predetermined angle.
The paper straw according to claim 1 . The paper straw (100) is
Further includes a wrinkle portion (113) of a bellows structure formed in a part of the external paper tube (110) and capable of bending the external paper tube (110) at an angle of 100 degrees or more.
The paper straw according to claim 1 .

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