Drinking straw
A stainless steel drinking straw with a bellows portion and diverse connection structures addresses environmental pollution and durability issues by being reusable and easy to clean, reducing carbon emissions and improving user convenience.
Patent Information
- Authority / Receiving Office
- KR · KR
- Patent Type
- Applications
- Current Assignee / Owner
- SARATECH CO LTD
- Filing Date
- 2025-01-13
- Publication Date
- 2026-07-21
AI Technical Summary
Conventional disposable straws, particularly those made of synthetic resin and paper, contribute significantly to environmental pollution due to their disposal issues and high carbon emissions, while paper straws face durability and wetting problems, rendering them ineffective after a few uses.
Manufacturing a drinking straw entirely from rust-resistant stainless steel with a bellows portion that connects two tubes, allowing for a variety of connection structures, including welded, screw, silicone, sleeve, and O-ring attachments, enabling reusability and easy cleaning.
The stainless steel straw significantly reduces carbon emissions and is eco-friendly by being washable and reusable, with the bellows section enhancing usability through flexible connection options.
Smart Images

Figure PAT00001_ABST
Abstract
Description
Technology Field
[0001] The present invention relates to a drinking straw, wherein the entire material is made of stainless steel so as not to rust and to be easy to clean, and to a drinking straw that provides a connection structure for various straws. Background Technology
[0002] Generally, straws are developed for drinking, come in various materials and shapes, and are commonly and widely used.
[0003] These straws are typically made of synthetic resin and produced in a tubular form via injection molding; they are disposable and discarded after use.
[0004] Meanwhile, synthetic resin straws are being discarded in large quantities due to their widespread use and volume; furthermore, due to the nature of synthetic resins, they require a very long time to completely decompose naturally and release air pollutants when incinerated. Consequently, straws that are not disposed of properly are emerging as a major culprit in land and ocean pollution.
[0005] To address this, paper straws are being produced. However, technology is needed to ensure that these paper straws are recyclable, can be easily disposed of without environmental pollution, and possess durability so that the joints do not easily unravel and separate when used with cold or hot beverages.
[0006] However, conventional paper straws use adhesive to roll the paper into a tube shape, which tends to lead to a avoidance of adhesive materials. Furthermore, the production process requires numerous steps from paper processing to manufacturing, resulting in significant carbon emissions when producing a single straw, which contrasts with the recyclability of paper straws. Consequently, there was a problem where the high volume of usage negated any eco-friendly advantages.
[0007] In addition, conventional paper straws are disposable, and there was a problem in that the paper would get wet after being used several times, rendering the straw unable to perform its original function. Prior art literature
[0008] Republic of Korea Registered Patent Publication No. 10-2181023 The problem to be solved
[0009] The present invention aims to solve conventional problems by manufacturing the entire product from stainless steel, which is rust-resistant, easy to clean, and prevents bacterial growth, thereby significantly reducing carbon emissions per unit compared to existing paper straws, and by enabling reusable straws that can be washed rather than used only once, thus providing eco-friendly advantages.
[0010] In addition, the present invention provides a bellows portion that can be bent between the upper and lower parts of a straw, and aims to improve ease of use by diversifying the connection structure of the bellows portion. means of solving the problem
[0011] To solve this purpose, the present invention;
[0012] A first straw made of stainless steel;
[0013] A second straw made of stainless steel;
[0014] A drinking straw is provided, characterized by being configured to include a bellows portion that is fitted and connected between the first straw and the second straw and has the function of bending through a corrugated tube. Effects of the invention
[0015] According to the present invention, since the straw is made of stainless steel, the carbon emissions generated during the production of a single straw can be significantly reduced compared to conventional paper straws, and it is eco-friendly as it can be washed and reused rather than being disposable. Furthermore, the bellows section that bends between the upper and lower parts of the straw is provided with various connection structures, thereby improving ease of use. Brief explanation of the drawing
[0016] FIG. 1 is a diagram showing the structure of a drinking straw according to a first embodiment of the present invention. FIG. 2 is a diagram showing the structure of a drinking straw according to a second embodiment of the present invention. FIG. 3 is a diagram showing the structure of a drinking straw according to a third embodiment of the present invention. FIG. 4 is a diagram showing the structure of a drinking straw according to a fourth embodiment of the present invention. FIG. 5 is a diagram showing the structure of a drinking straw according to the fifth embodiment of the present invention. Specific details for implementing the invention
[0017] The features of the drinking straw according to the present invention can be understood through the embodiments described in detail below with reference to the attached drawings.
[0018] Meanwhile, embodiments of the present invention may be implemented in various forms within the scope of the art to which the invention belongs, and are not specifically limited to the embodiments described herein.
[0019] In addition, to clearly explain the present invention, repetitive descriptions of identical or similar components throughout the specification have been omitted, drawings have been omitted for parts unrelated to the description, and reference numerals for ordinary components have been omitted.
[0021] The present invention will be described below with reference to the attached drawings.
[0022] FIGS. 1 to 4 are drawings for explaining the configuration of each part of a drinking straw according to each embodiment of the present invention.
[0023] The drinking straw (1) according to this is configured to include a first straw (100) made of stainless steel; a second straw (200) made of stainless steel; and a bellows part (300) that is fitted and connected between the first straw (100) and the second straw (200) and has the function of bending through a corrugated tube (310).
[0024] First, the first straw (100) and the second straw (200) are made in the shape of tubes so that they can be drunk, and are made entirely of stainless steel.
[0025] The first straw (100) and the second straw (200) each have rounded ends so that there is no inconvenience when drinking.
[0026] Meanwhile, the first straw (100) and the second straw (200) may be manufactured to have the same length or to have relatively different lengths.
[0027] When the lengths of the first straw (100) and the second straw (200) are made different, the length of the first straw (100) is shortened and the length of the second straw (200) is lengthened so that the upper part of the straw can be easily bent using the bellows part (300) when drinking.
[0028] And the bellows part (300) is inserted between the first straw (100) and the second straw (200) using an adapter, and the connection point between the first straw (100) and the second straw (200) can be bent using a shape-deformable corrugated tube (310).
[0029] Meanwhile, the bellows section (300) can be made of silicone material or stainless steel material for the corrugated tube (310), and basically the corrugated tube (310) is made of stainless steel material.
[0030] First Examples
[0031] Here, the bellows section (300) is connected to each end of the corrugated tube (310) and further includes a welded adapter (320) that is fitted onto the first straw (100) and the second straw (200) and has the fitted part fixed by welding.
[0032] Referring to FIG. 1, the welded adapter (320) has a fitting groove (321) into which a straw is inserted on the inside of the tubular body, and one end of the corrugated pipe (310) is connected to the other end of the fitting groove (321), and the corrugated pipe (310) can be fixed by a fastening method such as welding, and a slag (322) formed by welding between the straw inserted into the fitting groove (321) and the welded adapter (320) can be fixed to the straw and the welded adapter (320).
[0033] At this time, a welding adapter (320) is provided at each end of the corrugated tube (310) to allow the first straw (100) and the second straw (200) to be fitted onto each side of the corrugated tube (310), and the first straw (100) and the second straw (200) fitted onto the welding adapter (320) are welded together to fix them to each other.
[0034] The second Examples
[0035] Additionally, the bellows section (300) is connected to each end of the corrugated tube (310) and further includes a screw-type adapter (330) that is detachably connected to the first straw (100) and the second straw (200) by a spiral connection.
[0036] Referring to FIG. 2, the screw adapter (330) is made of the same structure as the welded adapter (320) described above, and a female screw (331) is formed in the inner circumference of the fitting groove (321) of the screw adapter (330), and correspondingly, a male screw (332) is formed on the outer circumference of one end of the first straw (100) and the second straw (200), so as to provide a fastening method of a detachable structure in which the male screw (332) of the straw is screw-coupled to the female screw (331) of the screw adapter (330).
[0037] At this time, screw-type adapters (330) are also provided at each end of the corrugated tube (310) to connect the first straw (100) and the second straw (200) to each side of the corrugated tube (310) using a screw assembly method, and to allow the first straw (100) and the second straw (200) to be separated as needed through the screw assembly method.
[0038] In this case, the first straw (100) and the second straw (200) can be easily separated through a screw fastening structure, providing convenience of portability and making it easy to clean using a cleaning brush, etc.
[0039] The third Examples
[0040] Additionally, when the corrugated tube (310) is made of silicone material, the first straw (100) and the second straw (200) are further fitted and connected to both ends of the silicone corrugated tube (310).
[0041] Referring to FIG. 3, the silicone corrugated tube (310) is provided with a fitting tube portion (311) to provide a detachable structure in which the first straw (100) and the second straw (200) are fitted and coupled at both ends, and the fitting tube portion (311) is a part that is fitted and supported by the first straw (100) and the second straw (200), and is made of a size that can induce a forced fit corresponding to the diameter of the straw.
[0042] At this time, the silicone corrugated tube (310) is made entirely of silicone material, allowing the first straw (100) and the second straw (200) to be inserted without a separate adapter.
[0043] In addition, the silicone corrugated tube (310) can be configured in the form of a cylindrical silicone tube depending on the case.
[0044] In this case, if the corrugated tube (310) is made of silicone material, it can provide good elasticity and moldability while being harmless to the human body.
[0045] 4th embodiment
[0046] Additionally, the bellows portion (300) is connected to each end of the corrugated tube (310) and further includes a sleeve adapter (340) having a sleeve groove (341) that is fitted into and supported by a sleeve projection (342) formed on each of the first straw (100) and the second straw (200).
[0047] Referring to FIG. 4, the sleeve adapter (340) is formed with the same structure as the aforementioned welded adapter (320), and a sleeve groove (341) is formed facing each other inside the fitting groove (321) of the sleeve adapter (340). The inner end of the sleeve groove (341) has a support groove portion (341a) that is bent at a right angle, and a sleeve projection (342) is provided facing each other on the outer circumference of the first straw (100) and the second straw (200) in correspondence with the sleeve groove (341), thereby providing a fastening method of a detachable structure in which the sleeve projection (342) of the straw is fitted into the sleeve groove (341) of the sleeve adapter (340).
[0048] When the sleeve projection (342) is inserted into the sleeve groove (341), the sleeve projection (342) is inserted and positioned in the end support groove (341a) of the sleeve groove (341) by rotating the straw or rotating the sleeve adapter (340), and the first straw (100) and the second straw (200) are fixed to the sleeve projection (342) by the support formed by the sleeve projection (342) being positioned in the support groove (341a), and the sleeve adapter (340) can be separated from the straw in reverse order.
[0049] At this time, sleeve adapters (340) are also provided at each end of the corrugated tube (310) so that the first straw (100) and the second straw (200) are connected to each side of the corrugated tube (310) in an alternating fitting structure using sleeve grooves (341), and the first straw (100) and the second straw (200) can be separated as needed.
[0050] In this case, the first straw (100) and the second straw (200) can be easily separated through a sleeve fastening structure, providing convenience of portability and making it easy to clean using a cleaning brush, etc.
[0051] The 5th Examples
[0052] Additionally, the bellows section (300) is connected to each end of the corrugated tube (310) and further includes a packing type adapter (350) that is supported by being fitted by an O-ring (351) fitted to each of the first straw (100) and the second straw (200).
[0053] Referring to FIG. 5, the packing type adapter (350) is made of the same structure as the welding type adapter (320) described above, and an O-ring groove (352) is formed inside the fitting groove (321) of the packing type adapter (350) so that an O-ring (351) is forcibly fitted and supported therein, and an O-ring (351) is fitted and coupled to the outer circumference of one end of the first straw (100) and the second straw (200) respectively to be fitted into the O-ring groove (352), thereby providing a fastening method of a detachable structure by the supporting force of the O-ring (351) being forcibly fitted.
[0054] At this time, packing adapters (350) are also provided at each end of the corrugated tube (310) to connect the first straw (100) and the second straw (200) to each side of the corrugated tube (310) using an O-ring (351) in a forced fit structure, and to allow the first straw (100) and the second straw (200) to be separated as needed.
[0056] As explained above, the present invention has been described in a preferred manner through the foregoing description and drawings, but the terms used to describe the present invention are not specifically limited, and the present invention is capable of variously changing or modifying embodiments within the scope of the technical concept of the invention and within the level of knowledge of those skilled in the art to which the invention belongs, and is not limited to the embodiments of the detailed description and claims of the present invention. Explanation of the symbols
[0057] 1; Drinking straw 100; 1st straw 200; 2nd straw 300; bellows section 310; corrugated tube 311; fitting tube section 320; Welding adapter 321; Insert groove 322; Slag 330; Screw adapter 331; female thread 332; male thread 340; Sleeve adapter 341; Sleeve groove 342; Sleeve protrusion 350; Packing type adapter 351; O-ring 352; O-ring groove
Claims
Claim 1 A drinking straw characterized by comprising: a first straw (100) made of stainless steel; a second straw (200) made of stainless steel; and a bellows portion (300) that is fitted and connected between the first straw (100) and the second straw (200) and has the function of bending through a corrugated tube (310). Claim 2 A drinking straw according to claim 1, wherein the first straw (100) and the second straw (200) are manufactured to have the same length or have relatively different lengths. Claim 3 A drinking straw according to claim 1, wherein the bellows portion (300) is connected to each end of the corrugated tube (310), and further includes a welded adapter (320) that is fitted onto the first straw (100) and the second straw (200) and the fitted portion is fixed by welding. Claim 4 In claim 1, the bellows portion (300) is connected to each end of the corrugated tube (310), and the drinking straw further includes a screw-type adapter (330) that is detachably connected to the first straw (100) and the second straw (200) by a screw connection. Claim 5 In claim 1, the drinking straw further comprises a bellows portion (300) made of silicone material or stainless steel material for the corrugated tube (310). Claim 6 In claim 5, when the above corrugated tube (310) is made of silicone material, the drinking straw further comprises fitting and connecting a first straw (100) and a second straw (200) to both ends of the silicone corrugated tube (310).