Seamless paper tube with waterproof and moistureproof functions

By designing the structure of locking threads and sealing pressure gaskets in the seamless paper tube liner sheath, combined with the cross-distributed elastic plastic strips, the problem of moisture at the end of the paper tube is solved, the waterproof and moisture-proof and compressive effects are achieved, and the quality of the paper tube is improved.

CN223225558UActive Publication Date: 2025-08-15HANGZHOU BAOLIJIE PACKAGING TECH CO LTD
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Patent Information

Application Number
CN202422323057.7
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-09-24
Publication Date
2025-08-15
Estimated Expiration
2034-09-24

AI Technical Summary

Technical Problem

The existing seamless paper tubes are prone to softening and moisture when the ends are contaminated by liquid, which affects the hardness and quality of use.

Method used

A seamless paper tube with a liner sheath is designed, with butt ends, packaging ends, clamping ends and connection ends on the inner side of the liner sheath, which achieves end sealing by locking threads and sealing gaskets, and cross-distributed elastic plastic strips are installed on the inner side of the liner sheath to provide support and protection.

Benefits of technology

It realizes sealing protection at the end and inner side of the paper tube to prevent dust and liquid pollution, improves the waterproofness and compressive resistance of the paper tube, and ensures the quality of use.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the technical field of seamless paper tubes, and discloses a seamless paper tube with waterproof and moistureproof functions, which comprises a paper tube structure, a lining sheath, a butt joint end, a packaging end, a clamping end, a connecting end and a locking thread, in the seamless paper tube, the lining sheath is integrally inserted into the inner side of the paper tube structure to be clamped, the butt joint end is in butt joint with the end part of the paper tube structure, and the sealing end is connected with the clamping end. The sealing pressure pad at the end part of the butt joint end is in sealing fit with the end part of the paper tube structure, and at the moment, the clamping end at one end of the packaging end can be inserted into the other end of the lining sheath and is rotated, so that the locking thread at the periphery of the connecting end is in threaded connection with the inner side of the lining sheath; and meanwhile, the sealing pressure pad at the end part of the packaging end can be attached and sealed with the other side of the end part of the paper tube structure, so that the end part and the inner side of the paper tube structure can be sealed and protected, and are prevented from being polluted by external dust and liquid, and the effects of improving the self waterproofness of the paper tube structure and ensuring the use quality of the paper tube structure are achieved.
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Description

Technical Field

[0001] The utility model relates to the technical field of seamless paper tubes, in particular to a seamless paper tube with waterproof and moisture-proof functions. Background Art

[0002] Paper tubes are tubular objects made from paper sheets. Most paper tubes are spiral or seamless, serving a wide range of applications, including those in the chemical fiber, film, printing, and packaging industries. However, the requirements for paper tubes vary depending on the application. The widespread use of film in our daily lives has significantly increased film production, leading to the widespread use of paper tubes in tube form for supporting and packaging various types of film. While existing seamless paper tubes feature dust and water-resistant exterior treatments, the folded layers at the ends of the tubes are susceptible to softening and moisture contamination from liquids, reducing the overall hardness of the tube and impacting subsequent quality. Therefore, we propose a seamless paper tube with waterproof and moisture-resistant properties. Utility Model Content

[0003] The utility model mainly solves the technical problems existing in the above-mentioned prior art and provides a seamless paper tube with waterproof and moisture-proof functions.

[0004] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a seamless paper tube with waterproof and moisture-proof function, comprising a paper tube structure, the interior of the paper tube structure is fitted and assembled with an inner lining sleeve, one end of the inner lining sleeve is integrally formed with a docking end that docks with the paper tube structure, and the other end of the inner lining sleeve is disassembled and provided with a packaging end, one end of the packaging end is integrally formed with a clamping end, and one end of the clamping end is integrally formed with a connecting end that connects and cooperates with the inner side of the inner lining sleeve, and the outer periphery of the connecting end and the local position of the inner side of the lining sleeve are provided with locking threads that fit together.

[0005] Preferably, one end of the packaging end is locked with the inner thread of the lining sleeve through a locking thread on the periphery of the connecting end.

[0006] Preferably, a sealing pad is provided at one end of the butting end and the end corresponding to each other, and the sealing pad itself has deformation characteristics.

[0007] Preferably, when the lining sleeve is engaged with the inner side of the paper tube structure, the sealing pressure pad at one end of the docking end is in a sealed fit with the end of the paper tube structure; and when the packaging end is connected to the inner side of the lining sleeve through the connecting end, the sealing pressure pad at one end of the packaging end is in a sealed fit with the end of the paper tube structure.

[0008] Preferably, a plurality of groups of elastic plastic strips supporting the lining sleeve are installed on the inner side of the lining sleeve, and the plurality of groups of elastic plastic strips are cross-distributed in sequence and the elastic plastic strips themselves have deformation characteristics.

[0009] The utility model provides a seamless paper tube with waterproof and moisture-proof functions. It has the following beneficial effects:

[0010] 1. A seamless paper tube with waterproof and moisture-proof functions. In this article, after the paper tube structure is wound and formed, the lining sleeve can be inserted into the inner side of the paper tube structure as a whole and clamped with the paper tube structure, and the butt joint end of one end of the lining sleeve will be butt jointed with the end of the paper tube structure, and the sealing pressure pad at the end of the butt joint end will be sealed and fitted with the end of the paper tube structure. At this time, the clamping end of one end of the packaging end can be inserted into the other end of the lining sleeve and rotated to make the locking thread on the outer periphery of the connecting end and the inner side of the lining sleeve threadedly connected and locked. At the same time, when the packaging end and the lining sleeve are tightly connected, the sealing pressure pad at the end of the packaging end will be fitted and sealed with the other side of the end of the paper tube structure. In this way, the end and inner side of the paper tube structure can be sealed and protected to prevent external dust and liquid pollution, thereby improving the waterproofness of the paper tube structure itself and ensuring the quality of use of the paper tube structure.

[0011] 2. A seamless paper tube with waterproof and moisture-proof functions, wherein a plurality of groups of elastic plastic strips are installed on the inner side of the inner lining sleeve, and the plurality of groups of elastic plastic strips are located inside the inner lining sleeve and are cross-distributed in sequence to bear the force, and the elastic plastic strips themselves have deformation characteristics. When the paper tube structure is under pressure from the outside, the paper tube structure can be initially supported and protected by the inner lining sleeve, and when the inner lining sleeve continues to be squeezed, the inner lining sleeve can be deformed and supported by the plurality of groups of elastic plastic strips, thereby achieving the purpose of improving the pressure resistance of the paper tube structure itself. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for the embodiments or the description of the prior art. Obviously, the drawings described below are only exemplary, and those skilled in the art can derive other implementation drawings based on the provided drawings without inventive effort.

[0013] The structures, proportions, sizes, etc. illustrated in this specification are intended solely to complement the contents disclosed herein and to facilitate understanding and reading by persons familiar with the art. They are not intended to limit the conditions under which the present invention may be implemented and therefore have no substantive technical significance. Any structural modifications, changes in proportions, or adjustments in size, without affecting the efficacy and objectives of the present invention, shall remain within the scope of the technical contents disclosed herein.

[0014] Figure 1 This is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 For this utility model Figure 1 A magnified view of middle A;

[0016] Figure 3 It is a partial schematic diagram of the elastic plastic strip of the utility model.

[0017] Legend:

[0018] 1. Lining sheath; 2. Butt joint end; 3. Packaging end; 4. Paper tube structure; 5. Sealing pressure pad; 6. Snap-fit end; 7. Connecting end; 8. Locking thread; 9. Elastic plastic strip. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0020] Example 1: A seamless paper tube with waterproof and moisture-proof function, such as Figure 1-Figure 2 As shown, it includes a paper tube structure 4, the interior of the paper tube structure 4 is fitted and assembled with an inner lining sleeve 1, one end of the inner lining sleeve 1 is integrally formed with a docking end 2 that docks with the paper tube structure 4, and the other end of the inner lining sleeve 1 is disassembled and provided with a packaging end 3, one end of the packaging end 3 is integrally formed with a clamping end 6, and one end of the clamping end 6 is integrally formed with a connecting end 7 that connects and cooperates with the inner side of the inner lining sleeve 1, and the outer periphery of the connecting end 7 and the local position of the inner side of the inner lining sleeve 1 are provided with locking threads 8 that fit together.

[0021] Furthermore, one end of the packaging end 3 is locked with the inner thread of the lining sleeve 1 through the locking thread 8 on the outer periphery of the connecting end 7 .

[0022] Furthermore, a sealing pad 5 is provided at one end corresponding to each other of the butt end 2 and the packaging end 3 , and the sealing pad 5 itself has deformation characteristics.

[0023] Furthermore, when the lining sleeve 1 is fitted and engaged with the inner side of the paper tube structure 4, the sealing pressure pad 5 at one end of the docking end 2 is in a sealed fit with the end of the paper tube structure 4, and when the packaging end 3 is connected to the inner side of the lining sleeve 1 through the connecting end 7, the sealing pressure pad 5 at one end of the packaging end 3 is in a sealed fit with the end of the paper tube structure 4.

[0024] Example 2: A seamless paper tube with waterproof and moisture-proof function, such as Figure 1-Figure 3As shown, it includes a paper tube structure 4, the interior of the paper tube structure 4 is fitted and assembled with an inner lining sleeve 1, one end of the inner lining sleeve 1 is integrally formed with a docking end 2 that docks with the paper tube structure 4, and the other end of the inner lining sleeve 1 is disassembled and provided with a packaging end 3, one end of the packaging end 3 is integrally formed with a clamping end 6, and one end of the clamping end 6 is integrally formed with a connecting end 7 that connects and cooperates with the inner side of the inner lining sleeve 1, and the outer periphery of the connecting end 7 and the local position of the inner side of the inner lining sleeve 1 are provided with locking threads 8 that fit together.

[0025] Furthermore, one end of the packaging end 3 is locked with the inner thread of the lining sleeve 1 through the locking thread 8 on the periphery of the connecting end 7, and a sealing pressure pad 5 is provided at the corresponding end of the docking end 2 and the packaging end 3. The sealing pressure pad 5 itself has a deformation characteristic. When the lining sleeve 1 is fitted and clamped with the inner side of the paper tube structure 4, the sealing pressure pad 5 at one end of the docking end 2 is in a sealed fit with the end of the paper tube structure 4. When the packaging end 3 is connected to the inner side of the lining sleeve 1 through the connecting end 7, the sealing pressure pad 5 at one end of the packaging end 3 is in a sealed fit with the end of the paper tube structure 4.

[0026] Furthermore, a plurality of groups of elastic plastic strips 9 supporting the lining sleeve 1 are installed on the inner side of the lining sleeve 1. The plurality of groups of elastic plastic strips 9 are cross-distributed in sequence and the elastic plastic strips 9 themselves have deformation characteristics.

[0027] The working principle of this utility model:

[0028] After the paper tube structure 4 is wound and formed, the lining sleeve 1 can be inserted into the inner side of the paper tube structure 4 as a whole and clamped with the paper tube structure 4, and the butt end 2 at one end of the lining sleeve 1 will be butted against the end of the paper tube structure 4, and the sealing pressure pad 5 at the end of the butt end 2 will be sealed and fitted with the end of the paper tube structure 4. At this time, the clamping end 6 at one end of the packaging end 3 can be inserted into the other end of the lining sleeve 1 and rotated to make the locking thread 8 on the outer periphery of the connecting end 7 be threadedly connected and locked with the inner side of the lining sleeve 1. At the same time, when the packaging end 3 is connected and tightened with the lining sleeve 1, the sealing pressure pad 5 at the end of the packaging end 3 will be fitted and sealed with the other side of the end of the paper tube structure 4. In this way, the paper tube The ends and inner sides of the structure 4 can be sealed and protected to prevent external dust and liquid contamination, thereby improving the waterproofness of the paper tube structure 4 itself and ensuring the quality of use of the paper tube structure 4. Several groups of elastic plastic strips 9 are installed on the inner side of the lining sleeve 1, and the several groups of elastic plastic strips 9 are located inside the lining sleeve 1 and are cross-distributed in sequence. The elastic plastic strips 9 themselves have deformation characteristics. When the paper tube structure 4 is under pressure outside, the paper tube structure 4 can be initially supported and protected by the lining sleeve 1, and when the lining sleeve 1 continues to be squeezed, the lining sleeve 1 can be deformed and supported by multiple groups of elastic plastic strips 9, thereby improving the pressure resistance of the paper tube structure 4 itself.

[0029] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.

Claims

1. A seamless paper tube with waterproof and moisture-proof functions, comprising a paper tube structure (4), characterized in that: The paper tube structure (4) is internally assembled with an inner lining sleeve (1); one end of the inner lining sleeve (1) is integrally formed with a docking end (2) docked with the paper tube structure (4); the other end of the inner lining sleeve (1) is detachably provided with a packaging end (3); one end of the packaging end (3) is integrally formed with a clamping end (6); one end of the clamping end (6) is integrally formed with a connecting end (7) connected and matched with the inner side of the inner lining sleeve (1); the outer periphery of the connecting end (7) and a local position on the inner side of the inner lining sleeve (1) are both provided with mutually fitting locking threads (8).

2. The seamless paper tube with waterproof and moisture-proof function according to claim 1, characterized in that: One end of the packaging end (3) is locked with the inner thread of the lining sleeve (1) through the locking thread (8) on the periphery of the connecting end (7).

3. The seamless paper tube with waterproof and moisture-proof function according to claim 2, characterized in that: A sealing pressure pad (5) is provided at one end of the butt end (2) and the sealing end (3) corresponding to each other, and the sealing pressure pad (5) itself has a deformation characteristic.

4. The seamless paper tube with waterproof and moisture-proof function according to claim 3, characterized in that: When the inner lining sheath (1) is engaged with the inner side of the paper tube structure (4), the sealing pressure pad (5) at one end of the butt end (2) is in a sealed fit with the end of the paper tube structure (4); and when the packaging end (3) is connected to the inner side of the inner lining sheath (1) through the connecting end (7), the sealing pressure pad (5) at one end of the packaging end (3) is in a sealed fit with the end of the paper tube structure (4).

5. The seamless paper tube with waterproof and moisture-proof function according to claim 4, characterized in that: Several groups of elastic plastic strips (9) supporting the lining sleeve (1) are installed on the inner side of the lining sleeve (1); the several groups of elastic plastic strips (9) are arranged in a cross-distributed manner in sequence, and the elastic plastic strips (9) themselves have deformation characteristics.