Anti-overflow straw and beverage packaging carton
By designing an anti-overflow straw, the exhaust structure and gradually enlarged exhaust tank accommodate overflowing drinks and bringing them back into the carton, solving the problem of beverage overflow caused by high pressure inside the carton and improving the consumption experience.
Patent Information
- Application Number
- CN202420809975.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-18
- Publication Date
- 2025-03-21
- Estimated Expiration
- 2034-04-18
AI Technical Summary
The existing carton packaging is prone to overflow of drinks due to high internal pressure when the straw is inserted, causing adverse consumer experience and customer complaints.
An anti-overflow straw is designed, including an internal and external pipe body. The exhaust structure is provided on the pipe body. The width of the exhaust groove gradually increases from bottom to top. It can accommodate overflowing drinks when the pressure in the carton is high, and bring them back into the carton when the straw continues to fall.
It effectively solves the problem of beverage overflow caused by high internal pressure of the carton, ensures that the beverage will not overflow during drinking, and improves the consumption experience.
Smart Images
Figure CN222646661U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of straws, in particular to an anti-overflow straw and a beverage packaging paper box. Background Art
[0002] Currently, probiotic yogurt products are consumed by inserting a straw into a paper box. However, the paper box packaging method has serious problems of extrusion deformation and product gas production causing the paper box to bulge. As a result, when the straw is inserted, the product will overflow from the insertion port of the straw and the paper box and from the straw mouth. The milk overflows from the straw and the overflow product can easily spill on the ground or clothes, causing a bad consumer experience and frequent product customer complaints. In addition, because the packaging method has not changed, the pain point of product overflow has always existed. Utility Model Content
[0003] The utility model aims to provide an anti-overflow straw and a beverage packaging carton, which can effectively solve the problem that when a carbonated beverage packaged in a carton is inserted into a straw for drinking, the beverage overflows from the insertion hole of the carton and the straw due to the high pressure inside the carton.
[0004] The purpose of the utility model can be achieved by adopting the following technical solutions:
[0005] The utility model provides an anti-overflow straw, comprising an outer tube body and an inner tube body connected up and down, the upper end of the inner tube body can be axially moved and telescopically arranged in the outer tube body, and can be limited in the lower end of the outer tube body when extending out of the outer tube body; at least two groups of exhaust structures are axially spaced on the outer wall of the inner tube body, and at least one group of exhaust structures is arranged on the outer wall of the outer tube body, each group of exhaust structures comprises a circular tube structure connected up and down and at least two exhaust grooves arranged circumferentially of the circular tube structure at intervals, a part of the outer tube body or a part of the inner tube body constitutes the circular tube structure, each exhaust groove is formed by the tube wall of the outer tube body or the tube wall of the inner tube body being recessed inwardly; the width of each exhaust groove along the circumference of the circular tube structure gradually increases from the lower end to the upper end of the anti-overflow straw; the outer diameter of the circular tube structure can match the aperture of the insertion hole opened on the paper box body for holding beverages, the upper area of the exhaust groove can form a beverage holding groove when the beverage in the paper box body overflows, and the circular tube structure can be sealed and plugged into the insertion hole after the corresponding exhaust groove passes through the insertion hole.
[0006] In a preferred embodiment of the present invention, the cross section of each exhaust groove is an isosceles triangle.
[0007] In a preferred embodiment of the present invention, the length of the base of the isosceles triangle is 0.5-1.5 mm, the length of the waist of the isosceles triangle is 3-10 mm, and the depth of the exhaust groove is 0.2-0.5 mm.
[0008] In a preferred embodiment of the present invention, along the axial direction of the anti-overflow straw, the exhaust grooves in two adjacent groups of exhaust structures are circumferentially staggered.
[0009] In a preferred embodiment of the present invention, two groups of exhaust structures are provided on the inner tube body, and two groups of exhaust structures are provided on the outer tube body, and each group of exhaust structures includes four exhaust grooves evenly spaced in the circumferential direction.
[0010] In a preferred embodiment of the present invention, the axial spacing length of the exhaust grooves in the two exhaust structures on the inner tube body is 1-3 mm, and the axial spacing length of the exhaust grooves in the two exhaust structures on the outer tube body is 1-3 mm.
[0011] In a preferred embodiment of the present invention, the diameter of the outer tube is 7-9 mm, and the length of the outer tube is 74.5-95 mm; the diameter of the inner tube is 7-9 mm, and the length of the inner tube is 74.5-95 mm.
[0012] In a preferred embodiment of the utility model, a convex ring is formed on the inner wall of the lower end of the outer tube body, and an annular groove is formed on the outer wall of the upper end of the inner tube body. The convex ring is formed by the inward depression of the lower end tube wall of the outer tube body, and the annular groove is formed by the inward depression of the upper end tube wall of the inner tube body. The convex ring can be clamped in the annular groove.
[0013] In a preferred embodiment of the present invention, the inward depression depth of the tube wall at the lower end of the outer tube body is 0.1-0.3 mm, and the axial length of the convex ring is 0.5-1 mm.
[0014] The utility model also provides a beverage packaging carton, which includes a carton body for containing beverages and the above-mentioned anti-overflow straw; the anti-overflow straw can be detachably installed on the outer side wall of the carton body, an insertion hole is provided on the carton body, a protective film is provided at the insertion hole, the outer diameter of the circular tube structure matches the hole diameter of the insertion hole, and the circular tube structure can be sealed and plugged into the insertion hole.
[0015] As described above, the anti-overflow straw and beverage packaging carton in the utility model use at least two groups of exhaust structures on the internal tube body, and gradually exhaust the pressurized gas in the carton box body through the exhaust grooves of each group of exhaust structures, so that the pressurized gas in the carton box body can be gradually discharged; the exhaust groove is designed to be a shape with a width that gradually increases from bottom to top, so that when the pressure in the carton box body is large and a small amount of beverage overflows, the overflowed beverage can be accommodated in the upper area of the exhaust groove, and the overflowed beverage in the exhaust groove can be brought back into the carton box body when the straw continues to go down. Using the exhaust groove on the external tube body, further exhaust can be made or air can be allowed to enter the carton to balance the internal and external pressures. Each group of exhaust structures includes at least two exhaust grooves arranged circumferentially, which can exhaust more evenly. Using each circular tube structure, the exhaust groove can be sealed immediately after passing through the insertion hole to ensure the sealing of the straw and the carton box body and prevent the beverage from overflowing. When the user drinks the product, the product liquid level inside the carton will be lowered, and the product liquid will no longer overflow, thereby effectively solving the problem of overflow of gas-producing products when the straw is inserted into the carton. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] The following drawings are only intended to illustrate and explain the present invention, and do not limit the scope of the present invention.
[0017] Figure 1 : It is a structural schematic diagram of the anti-overflow straw provided by the utility model.
[0018] Figure 2 : A schematic diagram of the structure of the exhaust groove provided by the utility model.
[0019] Description of Figure Numbers:
[0020] 1. Internal tube body;
[0021] 2. External tube body;
[0022] 3. Exhaust structure; 31. Circular tube structure; 32. Exhaust groove. DETAILED DESCRIPTION
[0023] In order to have a clearer understanding of the technical features, purposes and effects of the utility model, the specific implementation methods of the utility model are now described with reference to the accompanying drawings.
[0024] like Figure 1 and Figure 2 As shown, this embodiment provides an anti-overflow straw, including an outer tube body 2 and an inner tube body 1 connected up and down, the upper end of the inner tube body 1 can be axially moved and telescopically arranged in the outer tube body 2, and can be limited in the lower end of the outer tube body 2 when extending out of the outer tube body 2.
[0025] At least two groups of exhaust structures 3 are axially spaced apart on the outer wall of the inner tube body 1, and at least one group of exhaust structures 3 is provided on the outer wall of the outer tube body 2. Each group of exhaust structures 3 includes a circular tube structure 31 connected up and down and at least two exhaust grooves 32 arranged at intervals along the circumference of the circular tube structure 31. A part of the outer tube body 2 or a part of the inner tube body 1 constitutes the circular tube structure 31, and each exhaust groove 32 is formed by the tube wall of the outer tube body 2 or the tube wall of the inner tube body 1 being recessed inwardly; the width of each exhaust groove 32 along the circumference of the circular tube structure 31 gradually increases from the lower end to the upper end of the anti-overflow straw; the outer diameter of the circular tube structure 31 can match the aperture of the insertion hole opened on the paper box body for holding beverages, and the upper area of the exhaust groove 32 can form a beverage receiving groove when the beverage in the paper box body overflows, and the circular tube structure 31 can be sealed and inserted in the insertion hole after the corresponding exhaust groove 32 passes through the insertion hole.
[0026] The straw is mainly suitable for beverage packaging cartons containing carbonated beverages, such as probiotic yogurt products. After being placed for a long time, carbonated beverages will produce gas inside the carton body (for example, the bacteria added inside the probiotic yogurt will produce gas after long-term storage), causing the carton to swell. In addition, the packaging method of the carton body will have the problem of severe extrusion deformation. After the existing straw is inserted into the carton body, the beverage will overflow from the straw, the insertion hole and the straw mouth. The straw of this embodiment can solve the overflow problem well.
[0027] Specifically, the outer tube body 2 and the inner tube body 1 are both straight tubes, and the cross-sections are both circular, and the diameter of each circular tube structure 31 is the same as the diameter of the outer tube body 2 or the diameter of the inner tube body 1. Before the straw is opened, the inner tube body 1 is retracted into the inner part of the outer tube body 2 to reduce the packaging space; when the straw is opened, the inner tube body 1 extends from the outer tube body 2, and when the inner tube body 1 is extended to the maximum, the upper end of the inner tube body 1 is limited within the lower end of the outer tube body 2 to prevent the inner tube body 1 from falling out of the outer tube body 2.
[0028] When in use, after the lower end of the straw pierces the insertion hole on the paper box body, it is gradually inserted, and along the axial direction of the straw, it first gradually passes through the exhaust grooves 32 of each group of exhaust structures 3 on the internal tube body 1 from bottom to top. When the exhaust grooves 32 pass through the insertion hole, the pressure gas in the paper box body will be discharged in a small amount. If the pressure in the paper box body is not large, there will be no yogurt overflowing at this time. If the pressure in the paper box body is large, a small amount of yogurt will overflow at this time. Since the width of the exhaust grooves 32 gradually increases from bottom to top, the upper area of the exhaust grooves 32 has a larger space. After the yogurt overflows, it will rush into the upper area of the exhaust grooves 32 to be accommodated here, and basically will not rush out of the exhaust grooves 32; when the straw continues to go down into the insertion hole, the yogurt accommodated in the exhaust grooves 32 will be brought into the paper box body again; after passing through the exhaust grooves 32, it will immediately enter the corresponding round tube structure 31, which can ensure the sealing of the paper box body and the straw and prevent the yogurt from overflowing. After exhausting through the exhaust grooves 32 of each group of exhaust structures 3 on the internal tube body 1, the pressure gas in the paper box body can be basically discharged. After passing through the connection between the upper end of the inner tube body 1 and the lower end of the outer tube body 2, the milk enters the exhaust grooves 32 on the outer tube body 2. At this time, the air can be further exhausted, or the air can be allowed to enter the paper box to balance the internal and external pressures, or neither exhaust nor intake, at which time the milk overflow phenomenon will basically no longer occur.
[0029] Therefore, the straw in this embodiment uses at least two groups of exhaust structures 3 on the inner tube body 1 to gradually exhaust the pressurized gas in the carton box body through the exhaust grooves 32 of each group of exhaust structures 3, and can basically gradually exhaust the pressurized gas in the carton box body; the exhaust grooves 32 are designed to have a shape with a width that gradually increases from bottom to top, so that when the pressure in the carton box body is relatively large and a small amount of beverage overflows, the overflowed beverage can be accommodated in the upper area of the exhaust grooves 32, and when the straw continues to go down, the overflowed beverage in the exhaust grooves 32 can be brought back into the carton box body. Using the exhaust grooves 32 on the outer tube body 2, further exhaust can be performed or air can be allowed to enter the carton to balance the internal and external pressures. Each group of exhaust structures 3 includes at least two exhaust grooves 32 arranged circumferentially, which can exhaust more evenly. Using each circular tube structure 31, the exhaust grooves 32 can be sealed immediately after passing through the insertion hole to ensure the sealing between the straw and the carton box body and prevent beverage overflow. When the user drinks the product, the product liquid level inside the paper box will be lowered, and the product liquid will no longer overflow, thereby effectively solving the problem of gas-generating products overflowing when the straw is inserted into the paper box.
[0030] In a preferred embodiment, the cross section of each exhaust groove 32 is an isosceles triangle. This shape is an inverted triangle structure, which realizes slow exhaust first, and then rapid exhaust after the internal pressure of the paper box is reduced to prevent product overflow. At the same time, the exhaust groove 32 of this shape can be processed to a smaller size during actual processing to achieve gradual and trace exhaust.
[0031] The cross-sectional dimensions of the exhaust groove 32 are preferably such that the length of the base of the isosceles triangle is 0.5-1.5 mm, the length of the waist of the isosceles triangle is 3-10 mm, and the depth of the exhaust groove 32 is 0.2-0.5 mm.
[0032] The exhaust groove 32 is smaller in this size, so that when the pressure in the carton box is high and the exhaust groove 32 overflows through the insertion hole, it is ensured that the beverage will not overflow too much, only a small amount of overflow exists, and can be accommodated in the larger space above the exhaust groove 32 (i.e., the beverage receiving groove), and it is ensured that the anti-overflow straw brings the beverage in the beverage receiving groove into the carton box when it is inserted into the insertion hole. Compared with the exhaust groove with a larger size and a deeper groove, when the pressure in the carton box is high, more milk overflow will still occur; in this embodiment, the exhaust groove 32 with a smaller size is used and is designed as an angular structure with a triangular cross-section, which effectively ensures that when the pressure in the carton box is high, only a little overflow will occur and it will be accommodated in the larger space above the exhaust groove 32 and will not rush out of the exhaust groove 32, and the beverage overflow is effectively prevented after gradual exhaust.
[0033] Specifically, the length of the base and waist of the isosceles triangle and the number of the exhaust grooves 23 are adjusted according to the capacity of the paper box body, and the depth of the grooves is adjusted according to the gas production capacity of the product.
[0034] Furthermore, along the axial direction of the anti-overflow straw, the exhaust grooves 32 in two adjacent groups of exhaust structures 3 are circumferentially staggered to make the exhaust more uniform.
[0035] The number of exhaust structures 3 and the number of exhaust slots 32 on the inner tube body 1 and the outer tube body 2 are determined according to the capacity of the actual paper box body and the size of the straw. Figure 1 Two groups of exhaust structures 3 are provided on the inner tube body 1, and two groups of exhaust structures 3 are provided on the outer tube body 2. Each group of exhaust structures 3 includes four exhaust grooves 32 evenly spaced in the circumferential direction, so as to meet the anti-overflow use requirements in various situations with a small number. In particular, when applied to probiotic yogurt products, the four groups of exhaust structures 3 on the straw, with a total of 16 exhaust grooves 32 with triangular cross-sections, can gradually deflate; the exhaust structure 3 can quickly seal through the circular tube structure 31 while deflation, with a fast response speed to prevent milk from overflowing, and then the next group of exhaust structures 3 arranged in a staggered manner can release pressure and seal quickly again, which can basically 100% solve the problem of milk overflowing along the straw during use due to the bulging of the probiotic yogurt product inside the paper box, and achieve sealing, and basically no milk overflow.
[0036] The specific dimensions of the outer tube body 2 and the inner tube body 1 are determined according to the actual product needs. In this embodiment, it is mainly used for probiotic yogurt products. The capacity of the paper box body is 200ml, the diameter of the outer tube body 2 is 7-9mm, and the length of the outer tube body 2 is 74.5-95mm; the diameter of the inner tube body 1 is 7-9mm, and the length of the inner tube body 1 is 74.5-95mm. After the inner tube body 1 is fully extended, the total length of the entire straw is 149-190mm. Correspondingly, in this embodiment, the interval length of the exhaust grooves 32 in the two groups of exhaust structures 3 on the inner tube body 1 along the axial direction is 1-3mm, and the interval length of the exhaust grooves 32 in the two groups of exhaust structures 3 on the outer tube body 2 along the axial direction is 1-3mm.
[0037] Furthermore, a convex ring is formed on the inner wall of the lower end of the outer tube body 2, and an annular groove is formed on the outer wall of the upper end of the inner tube body 1. The convex ring is formed by the inward depression of the lower end tube wall of the outer tube body 2, and the annular groove is formed by the inward depression of the upper end tube wall of the inner tube body 1. The convex ring can be clamped in the annular groove. The clamping fit between the convex ring and the annular groove can prevent the inner tube body 1 from slipping out of the outer tube body 2. When the straw is gradually inserted into the insertion hole, it can also further exhaust air at the outer recessed position of the convex ring at the connection position between the inner tube body 1 and the outer tube body 2. In this embodiment, the depth of the inward depression of the lower end tube wall of the outer tube body 2 is 0.1-0.3mm, and the axial length of the convex ring is 0.5-1mm.
[0038] Generally, the lower end of the inner tube body 1 is a pointed mouth structure, so that the pointed mouth structure can pierce the protective film at the insertion hole on the paper box body when in use; the pointed mouth structure can expose the outer tube body 2 when the inner tube body 1 is retracted into the outer tube body 2, so as to facilitate use.
[0039] The following is a more detailed explanation of the anti-overflow principle of the straw:
[0040] It can be understood that if the exhaust structures 3 on the inner tube body 1 (or the outer tube body 2) are greater than or equal to two groups, then the exhaust structures 3 on the inner tube body 1 (or the outer tube body 2) will be arranged at intervals along the axial direction of the anti-overflow straw. The exhaust structures 3 provided on the inner tube body 1 are respectively recorded as the first inner exhaust structure to the Mth inner exhaust structure from the lower end to the upper end of the inner tube body 1, M≥2 and is a positive integer, the mth inner exhaust structure includes the mth inner circular tube structure and at least two mth inner exhaust grooves, 1≤m≤M, and m is a positive integer. The exhaust structures 3 provided on the outer tube body 2 are respectively recorded as the first outer exhaust structure to the Nth outer exhaust structure from the lower end to the upper end of the outer tube body 2, N≥1 and is a positive integer, the nth inner exhaust structure includes the nth outer circular tube structure and at least two nth outer exhaust grooves, 1≤n≤M, and m is a positive integer.
[0041] In actual design, according to the size of the paper box and the specific product type, when the straw is inserted into the bottom of the paper box, it can be designed that any of the first outer circular tube structure to the Nth outer circular tube structure on the external tube body 2 is exactly at the position of the insertion hole. Taking the first outer circular tube structure exactly at the position of the insertion hole when the straw is inserted into the bottom of the paper box as an example, the working principle of anti-overflow is as follows:
[0042] When in use, after opening the straw, the lower end of the inner tube body 1 in the straw pierces the insertion hole on the paper box and enters the inside of the paper box. Before the straw is inserted to the bottom of the paper box, as the straw gradually enters, the first inner exhaust groove on the inner tube body 1 first enters the insertion hole. At this time, the first inner exhaust groove begins to discharge a small amount of pressurized gas in the paper box, and immediately enters the first inner round tube structure after passing through the first inner exhaust groove. The first inner round tube structure is sealed and plugged into the insertion hole, so that the paper box and the straw are kept sealed to prevent the product liquid from overflowing. As the straw continues to be inserted, the second inner exhaust groove on the inner tube body 1 enters the insertion hole. This section of the second inner exhaust groove also discharges a small amount of pressurized gas inside the paper box step by step, and immediately enters the second inner round tube structure after passing through the second inner exhaust groove, so that the paper box and the straw are kept sealed. And so on, until it passes through the Mth inner exhaust groove on the inner tube body 1 and enters the Mth inner circular tube structure. When passing through the connection between the upper end of the inner tube body 1 and the lower end of the outer tube body 2, the raised outer concave area corresponding to the connection can further exhaust air. After passing through this position, it immediately enters the circular tube at the lower end of the outer tube body 2 to ensure sealing. Then it enters the first outer exhaust groove on the outer tube body 2. At this time, it can further exhaust air, or allow air to enter the paper box to balance the internal and external pressures, or neither exhaust nor let in air. After passing through the first outer exhaust groove, it immediately enters the first outer circular tube structure to ensure the sealing between the paper box and the straw, and is now inserted to the bottom of the paper box.
[0043] When the straw is inserted to the bottom of the paper box, the contact point between the straw and the insertion hole on the paper box is exactly at the position of the first outer cylindrical tube structure. As the drinker drinks the product, the liquid level of the product inside the paper box is lowered, and the product liquid can no longer overflow from the contact point between the straw and the paper box, and the problem of milk spillage basically does not occur. In addition, as the product is drunk, the pressure inside the paper box becomes smaller, forming a vacuum. At this time, in order to drink smoothly, the straw can be lifted up a little, so that the first outer exhaust groove contacts the insertion hole of the paper box, and air enters the paper box body through the first outer exhaust groove to balance the pressure inside and outside the paper box.
[0044] Since the packaging carton for beverages is filled to the brim during filling, the gap between the beverage in the carton and the top surface of the carton is very small, so the pressurized gas in the carton after the beverage produces gas is also mainly concentrated in the small gap between the beverage and the top surface of the carton. It should be noted that the size of each exhaust groove 32 in the structure of this embodiment should be small when designing to ensure that the exhaust grooves 32 of each group of exhaust structures 3 on the internal tube body 1 can exhaust a small amount of gas when passing through the insertion hole during use, and the pressurized gas in the carton can be basically exhausted after passing through all the exhaust structures 3 on the internal tube body 1, so that when it reaches the first outer exhaust groove of the external tube body 2, it can exhaust, intake, or neither exhaust nor intake according to the pressure situation in the carton.
[0045] During actual use, if the initial pressure in the carton body is relatively small, after the first inner exhaust groove is exhausted, there will be no milk overflow; if the initial pressure in the carton is relatively large, after the first inner exhaust groove is exhausted, a small amount of milk overflow will occur, and the overflowed milk will enter the first inner exhaust groove; since the pressure in the carton is reduced after the first inner exhaust groove is exhausted, as the straw continues to enter, the overflowed small amount of yogurt will be brought into the carton again with the straw. Afterwards, when the second inner exhaust groove is exhausted, if the pressure in the carton is still relatively large, a small amount of milk overflow will occur, and as the straw continues to enter, the overflowed small amount of yogurt will be brought into the carton again with the straw. By analogy, by designing the number of exhaust structures 3 on the internal tube body 1 and the number and size of the exhaust grooves 32, it can be ensured that each group of exhaust structures 3 on the internal tube body 1 is exhausted step by step, and even if the pressure inside the carton is relatively large, only a small amount of milk overflow will occur, and it can be brought into the carton again with the straw. When the first outer exhaust groove on the outer tube body 2 enters the insertion hole, the pressurized gas in the paper box has been basically exhausted, and at this time, milk overflow will basically not occur.
[0046] Under this design (i.e., the first outer tube structure is exactly at the position of the insertion hole when the straw is inserted into the bottom of the paper box), if the user fails to fully extend the inner tube body 1, or the inner tube body 1 slides back to a part of the outer tube body 2 during the process of the straw being inserted into the paper box; during use, after the first outer tube structure is at the insertion hole, the straw continues to be inserted into the paper box, and when the second outer exhaust groove 32 enters the insertion hole, according to the pressure in the paper box, further exhaust can be performed or air can be allowed to enter the paper box to balance the internal and external pressures, or neither exhaust nor intake can be performed. After passing through the second outer exhaust groove 32, the second outer tube structure 31 is immediately entered to keep the paper box and the straw sealed to prevent the product liquid from overflowing.
[0047] If the straw has been inserted to the bottom of the carton at this time, the liquid level of the product will decrease as the user continues to drink, and it will no longer overflow. Similarly, when the pressure inside the carton becomes smaller and the drink cannot be sucked out smoothly, the pressure inside and outside the carton can be balanced by lifting the straw slightly.
[0048] If the straw has not been inserted into the bottom of the paper box at this time, and the Nth outer tube structure is not in the insertion hole, the straw can continue to extend into the paper box. When the third outer exhaust groove 32 enters the insertion hole, the principle is similar to that of the second outer exhaust groove 32, and will not be repeated here. Until the straw is inserted into the bottom of the paper box or the Nth outer tube structure is in the insertion hole, the straw will no longer extend into the paper box. As the user drinks, the liquid level decreases and the product liquid will no longer overflow.
[0049] It can be understood that if one of the second outer tube structures 31 to the Nth outer tube structure is exactly at the position of the insertion hole when the straw is inserted into the bottom of the paper box during design, this design can be used, for example, when it is applied to a paper box with a larger capacity and a larger height. The working principle is similar to the previous one and will not be repeated here.
[0050] During the entire use process, the exhaust grooves 32 on the inner tube body 1 play a role in exhausting, so as to gradually discharge the pressurized gas in the paper box in trace amounts to prevent product overflow; if the pressure in the paper box is relatively high, a small amount of milk will overflow when some of the exhaust grooves 32 of the inner tube body 1 reach the insertion hole, but the overflowed small amount of milk will be contained in the exhaust grooves 32 and can be brought in again as the straw is lowered. The first outer exhaust groove on the outer tube body 2 mainly plays a role in further exhausting or intake of air, and the remaining exhaust grooves 32 of the outer tube body 2 mainly play a role in intake of air. The above-mentioned circular tube structures 31 mainly enter the insertion hole immediately after the corresponding exhaust groove 32 is facing the insertion hole to seal the straw and the paper box to ensure sealing.
[0051] Of course, the specific number of the exhaust grooves 32 and which circular tube structure is located at the insertion hole when the straw is inserted into the bottom of the paper box are determined according to actual needs, and this embodiment is only for illustration.
[0052] Furthermore, the present embodiment also provides a beverage packaging carton, which includes a paper box body for containing beverages and the above-mentioned anti-overflow straw; the anti-overflow straw can be detachably installed on the outer wall of the paper box body, an insertion hole is provided on the paper box body, a protective film is provided at the insertion hole, the outer diameter of the circular tube structure 31 matches the aperture of the insertion hole, and the circular tube structure 31 can be sealed and inserted in the insertion hole.
[0053] The entire beverage packaging carton includes the above-mentioned anti-overflow straw and has the same effect as the anti-overflow straw.
[0054] It can be understood that during packaging, the inner tube body 1 will be retracted into the outer tube body 2 and a protective bag will be placed on the outer surface of the straw, which will then be installed (e.g., bonded) to the outer wall of the paper box body. After the lower end of the inner tube body 1 pierces the protective film, the straw can be inserted into the paper box body. The outer diameter of the circular tube structure 31 is the same as the diameter of the insertion hole. When the circular tube structure 31 is in the insertion hole, the paper box body and the straw can maintain sealing. The specific anti-overflow principle of the anti-overflow straw has been described in detail above and will not be repeated here.
[0055] The above is only an illustrative embodiment of the utility model, and is not intended to limit the scope of the utility model. Any equivalent changes and modifications made by any technician in the field without departing from the concept and principle of the utility model should fall within the scope of protection of the utility model.
Claims
1. An anti-overflow straw, characterized in that: It comprises an outer tube body and an inner tube body connected in an upper and lower manner, wherein the upper end of the inner tube body can be axially moved and telescopically arranged in the outer tube body, and can be limited in the lower end of the outer tube body when extending out of the outer tube body; At least two groups of exhaust structures are axially spaced apart on the outer wall of the inner tube body, and at least one group of the exhaust structures is provided on the outer wall of the outer tube body, each group of the exhaust structures includes a circular tube structure connected up and down and at least two exhaust grooves arranged at intervals along the circumference of the circular tube structure, a part of the outer tube body or a part of the inner tube body constitutes the circular tube structure, and each of the exhaust grooves is formed by the tube wall of the outer tube body or the tube wall of the inner tube body being recessed inwardly; the width of each of the exhaust grooves along the circumference of the circular tube structure gradually increases from the lower end to the upper end of the anti-overflow straw; the outer diameter of the circular tube structure can match the aperture of the insertion hole opened on the paper box body for holding beverages, the upper area of the exhaust groove can form a beverage receiving groove when the beverage in the paper box body overflows, and the circular tube structure can be sealed and inserted into the insertion hole after the corresponding exhaust groove passes through the insertion hole.
2. The anti-overflow straw according to claim 1, wherein: The cross section of each exhaust groove is an isosceles triangle.
3. The anti-overflow straw according to claim 2, wherein: The length of the base of the isosceles triangle is 0.5-1.5 mm, the length of the waist of the isosceles triangle is 3-10 mm, and the depth of the exhaust groove is 0.2-0.5 mm.
4. The anti-overflow straw of claim 1, wherein: Along the axial direction of the anti-overflow straw, the exhaust grooves in two adjacent groups of exhaust structures are circumferentially staggered.
5. The anti-overflow straw of claim 1, wherein: Two groups of the exhaust structures are provided on the inner tube body, and two groups of the exhaust structures are provided on the outer tube body. Each group of the exhaust structures includes four exhaust grooves that are evenly spaced in the circumferential direction.
6. The anti-overflow straw of claim 1, wherein: The axial spacing length of the exhaust grooves in the two groups of the exhaust structures on the inner tube body is 1-3 mm, and the axial spacing length of the exhaust grooves in the two groups of the exhaust structures on the outer tube body is 1-3 mm.
7. The anti-overflow straw of claim 1, wherein: The diameter of the outer tube body is 7-9 mm, and the length of the outer tube body is 74.5-95 mm; the diameter of the inner tube body is 7-9 mm, and the length of the inner tube body is 74.5-95 mm.
8. The anti-overflow straw of claim 1, wherein: A convex ring is formed on the inner wall of the lower end of the outer tube body, and an annular groove is formed on the outer wall of the upper end of the inner tube body. The convex ring is formed by the inward depression of the lower end tube wall of the outer tube body, and the annular groove is formed by the inward depression of the upper end tube wall of the inner tube body. The convex ring can be clamped in the annular groove.
9. The anti-overflow straw of claim 8, wherein: The inward depression depth of the tube wall at the lower end of the outer tube body is 0.1-0.3 mm, and the axial length of the convex ring is 0.5-1 mm.
10. A beverage packaging carton, characterized in that: The beverage packaging carton comprises a carton body for containing beverages and an anti-overflow straw as claimed in any one of claims 1 to 9; The anti-overflow straw can be detachably installed on the outer side wall of the paper box body. An insertion hole is provided on the paper box body. A protective film is provided at the insertion hole. The outer diameter of the circular tube structure matches the aperture of the insertion hole. The circular tube structure can be sealed and inserted into the insertion hole.