Seamless paper tube with waterproof and moistureproof functions

Through multi-layer structural design and specific material combination, the problem of poor environmental performance of traditional seamless paper tube waterproof layers has been solved, achieving high-efficiency waterproof and moisture-proof performance, extending service life and keeping the surface clean, making it suitable for high humidity and oily environments.

CN223948765UActive Publication Date: 2026-02-27苏州昂源实业有限公司
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Patent Information

Application Number
CN202520292438.5
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-02-24
Publication Date
2026-02-27
Estimated Expiration
2035-02-24

AI Technical Summary

Technical Problem

Traditional seamless paper tubes have poor environmental performance and insufficient durability in their waterproof layer, and are prone to wear or peeling, making it difficult to meet the waterproof and moisture-proof requirements of high humidity and oily environments.

Method used

The paper tube is made of a multi-layer structure design consisting of a waterproof sealing layer, a moisture-proof composite layer, a partition layer, a pressure-resistant composite layer, and a hydrophobic layer. It is combined with materials such as fluorinated ethylene propylene copolymer film, aluminized film, and nano silica coating to form a seamless paper tube that is waterproof and moisture-proof.

Benefits of technology

It significantly improves the waterproof performance of paper tubes, extends their service life, keeps the surface clean, and is suitable for high humidity or oily environments, meeting the needs of sustainable development.

✦ Generated by Eureka AI based on patent content.

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Patent Text Reader

Abstract

The utility model discloses a seamless paper tube with waterproof and moistureproof functions, which comprises a waterproof sealing layer, a waterproof layer and a waterproof layer, the moisture-proof composite layer is arranged outside the waterproof sealing layer in a bonding and sleeving manner; the partition layer is arranged outside the moisture-proof composite layer in a bonding and sleeving manner; the compression-resistant composite layer is arranged outside the separation layer in a bonding and sleeving manner; and the hydrophobic layer is arranged outside the compression-resistant composite layer in a bonding and sleeving manner. Through the nanoscale surface structure of the hydrophobic layer, adhesion of water, oil or other liquid can be effectively prevented, the waterproof performance is remarkably improved, the hydrophobic layer adopts the nano silicon dioxide coating, dependence on traditional plastic is reduced, the requirement of sustainable development is met, the hydrophobic layer has excellent wear resistance and ageing resistance, and the service life of the waterproof layer is prolonged. The waterproof effect can be kept for a long time, the service life of the paper tube is prolonged, the hydrophobic layer is waterproof, dirt, dust and the like can be prevented from adhering, and the surface of the paper tube is kept clean.
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Description

TECHNICAL FIELD

[0001] The utility model relates to the field of seamless paper tube, especially a seamless paper tube with waterproof and moisture-proof function. BACKGROUND

[0002] Paper tube is a tubular object made of paper. Most paper tubes are spiral paper tubes and seamless paper tubes. Paper tubes have a wide range of applications, mainly in the chemical fiber industry, the film industry, the printing industry, the papermaking industry, the metallurgical industry, and the packaging tube industry. Seamless paper tube is an integrated tubular structure made by advanced manufacturing process. Its characteristics are that the tube body has no joints, the structure is uniform, and it has excellent mechanical properties. The paper tube is made of high-strength paper material, which is formed by precise winding and high-temperature curing process, ensuring the integrity and stability of the tube body. Compared with traditional jointed paper tubes, seamless paper tubes have higher crack resistance and deformation resistance when subjected to radial pressure and axial tension. At the same time, their surface smoothness and dimensional accuracy are significantly improved, making them suitable for high-precision applications.

[0003] In the prior art, seamless paper tubes are widely used in packaging, transportation, and storage fields, especially in scenarios that require waterproofing, moisture-proofing, and corrosion resistance. However, traditional waterproof layers usually rely on plastic film or simple waterproof coatings. While these materials can prevent water penetration to some extent, they still have the following limitations: existing film and coating waterproofing is less environmentally friendly, difficult to degrade, and may pollute the environment. At the same time, they lack durability and are prone to wear or shedding after long-term use. SUMMARY

[0004] The purpose of the utility model is to provide a seamless paper tube with waterproof and moisture-proof function to solve the problems raised in the background art.

[0005] To achieve the above purpose, the utility model provides the following technical scheme: a seamless paper tube with waterproof and moisture-proof function, comprising:

[0006] A waterproof sealing layer in the form of a cylinder;

[0007] A moisture-proof composite layer bonded to the outside of the waterproof sealing layer;

[0008] A partition layer bonded to the outside of the moisture-proof composite layer;

[0009] A compression-resistant composite layer bonded to the outside of the partition layer;

[0010] A hydrophobic layer bonded to the outside of the compression-resistant composite layer.

[0011] Preferably, the moisture-proof composite layer comprises:

[0012] A moisture-proof paper base layer is adhered to the outside of the waterproof sealing layer;

[0013] A reinforcing layer is adhered to the outside of the moisture-proof paper base layer.

[0014] Preferably, the pressure-resistant composite layer comprises:

[0015] A corrosion protection layer is in a double-layer structure with an internal space, and the double-layer corrosion protection layer is adhered to the outside of the partition layer;

[0016] A glue layer is filled in the internal space of the double-layer structure of the corrosion protection layer.

[0017] Preferably, the internal space of the glue layer is embedded with a reinforcing material, and the reinforcing material is a carbon fiber reinforced composite material.

[0018] Preferably, the waterproof sealing layer is a fluorinated ethylene propylene copolymer film with a thickness of 0.05-0.1mm.

[0019] Preferably, the hydrophobic layer is a nano-silicon dioxide coating with a thickness of 0.01-0.02mm.

[0020] Technical effects and advantages of the present application:

[0021] The present application utilizes the setting mode of the waterproof sealing layer and the hydrophobic layer in cooperation, through the nanoscale surface structure of the hydrophobic layer, the paper tube surface has a very high contact angle (>150°), which can effectively prevent water, oil or other liquids from adhering, significantly improve the waterproof performance, and the hydrophobic layer adopts a nano-silicon dioxide coating, reduces the dependence on traditional plastics, meets the needs of sustainable development, the hydrophobic layer has excellent wear resistance and anti-aging performance, can maintain the waterproof effect for a long time, prolongs the service life of the paper tube, and the hydrophobic layer not only prevents water, but also prevents dirt, dust and other attachments, keeps the surface of the paper tube clean, and is suitable for high humidity or oil pollution environment. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the present application.

[0023] Figure 2 It is a schematic diagram of the front structure of the present application.

[0024] Figure 3 It is a schematic diagram of the front structure of the present application. Figure 2 It is a schematic diagram of the front structure of the present application.

[0025] In the figure: 1, waterproof sealing layer; 2, moisture-proof composite layer; 21, moisture-proof paper base layer; 22, reinforcing layer; 3, partition layer; 4, pressure-resistant composite layer; 41, anti-corrosion protective layer; 42, adhesive layer; 43, reinforcing material; 5, hydrophobic layer. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0027] The utility model provides a kind of seamless paper tube with waterproof and moisture-proof function as shown in Figures 1-3 The utility model provides a kind of seamless paper tube with waterproof and moisture-proof function as shown in The utility model discloses a waterproof sealing layer 1, waterproof sealing layer 1 is cylindrical, waterproof sealing layer 1 is fluorinated ethylene propylene copolymer film, the film provides excellent waterproof sealing, prevents high pressure water penetration.The film has excellent chemical resistance and low friction coefficient, is suitable for high pressure environment, and its thickness is 0.05-0.1mm;Moisture-proof composite layer 2, moisture-proof composite layer 2 is adhered to the outside of waterproof sealing layer 1;Partition layer 3, partition layer 3 is adhered to the outside of moisture-proof composite layer 2, and the material of partition layer 3 is aluminum-plated film.The thickness is 0.02-0.05mm, partition layer 3 can block water vapor in air, prevent paper pipe from being damp;Pressure-resistant composite layer 4, pressure-resistant composite layer 4 is adhered to the outside of partition layer 3;Hydrophobic layer 5, hydrophobic layer 5 is adhered to the outside of pressure-resistant composite layer 4, and hydrophobic layer 5 is nanometer silicon dioxide coating, and its thickness is 0.01-0.02mm, by the nanometer level surface structure of hydrophobic layer 5, paper tube surface has very high contact angle > 150 °, can effectively prevent water, oil or other liquid adhesion, significantly improve waterproof performance, and hydrophobic layer 5 uses nanometer silicon dioxide coating, reduces the dependence on traditional plastic, meets the demand of sustainable development, hydrophobic layer 5 has excellent wear resistance and anti-aging performance, can long-term maintain waterproof effect, prolong the service life of paper tube, and hydrophobic layer 5 not only waterproof, but also prevent dirt, dust and the like from adhering, keep the cleanliness of paper tube surface, be applicable to high humidity or oil pollution environment, by the setting of hydrophobic layer 5, paper tube surface has superhydrophobic property, prevents water, oil or other liquid adhesion.Suitable for paper tube in high humidity or oil pollution environment.

[0028] The moisture-proof composite layer 2 comprises: a moisture-proof paper base layer 21, which is adhesively sleeved outside the waterproof sealing layer 1; and a reinforcing layer 22, which is adhesively sleeved outside the moisture-proof paper base layer 21. The moisture-proof paper base layer 21 is made of high-strength kraft paper and has a thickness of 1.5-2.5 mm, which can be adjusted according to the diameter of the paper tube and the load-bearing requirement. The moisture-proof paper base layer 21 is configured to provide the main structural strength and support of the paper tube and to enhance the waterproof and moisture-proof performance of the paper tube. The reinforcing layer 22 is made of glass fiber cloth and has a thickness of 0.1-0.3 mm. The reinforcing layer 22 can improve the mechanical strength and durability of the paper tube and is suitable for high-load or harsh environments.

[0029] The anti-pressure composite layer 4 comprises: a corrosion protection layer 41, which has a double-layer structure with an internal space and is adhesively sleeved outside the partition layer 3; and a viscose layer 42, which is filled in the internal space of the double-layer corrosion protection layer 41. The viscose layer 42 has a reinforcing material 43 embedded therein, and the reinforcing material 43 is a carbon fiber reinforced composite material. The corrosion protection layer 41 is made of polypropylene film, which has good waterproofness and chemical resistance. The viscose layer 42 is configured to fill the reinforcing material 43. The reinforcing material 43 is uniformly distributed in the viscose layer 42 and has a thickness of 0.1-0.3 mm, thereby improving the compression strength and bending resistance of the paper tube.

[0030] Finally, it should be noted that the above is only a preferred embodiment of the present application and is not intended to limit the present application. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent replacements to some technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A seamless paper tube with waterproof and moisture-proof functions, characterized in that, It comprises: a waterproof sealing layer (1) in a cylindrical shape; a moisture-proof composite layer (2) adhered to the outside of the waterproof sealing layer (1); a partition layer (3) adhered to the outside of the moisture-proof composite layer (2); a compression-resistant composite layer (4) adhered to the outside of the partition layer (3); a hydrophobic layer (5) adhered to the outside of the compression-resistant composite layer (4).

2. The seamless paper tube having a waterproof and moisture-proof function according to claim 1, wherein The moisture-proof composite layer (2) comprises: a moisture-proof paper base layer (21) adhered to the outside of the waterproof sealing layer (1); a reinforcing layer (22) adhered to the outside of the moisture-proof paper base layer (21).

3. The seamless paper tube with waterproof and moisture-proof function according to claim 1, characterized in that, The compression-resistant composite layer (4) comprises: a corrosion protection layer (41) in a double-layer structure with an internal space, and the double-layer corrosion protection layer (41) is adhered to the outside of the partition layer (3); a viscose layer (42) filled in the internal space of the double-layer structure of the corrosion protection layer (41).

4. The seamless paper tube with waterproof and moisture-proof function according to claim 3, characterized in that, The viscose layer (42) is embedded with a reinforcing material (43), and the reinforcing material (43) is a carbon fiber reinforced composite material.

5. The seamless paper tube with waterproof and moisture-proof function according to claim 1, characterized in that, The waterproof sealing layer (1) is a fluorinated ethylene propylene copolymer film with a thickness of 0.05-0.1mm.

6. The seamless paper tube with waterproof and moisture-proof function according to claim 1, characterized in that, The hydrophobic layer (5) is a nano-silicon dioxide coating with a thickness of 0.01-0.02mm.