Spiral winding composite paper tube

Abstract

The utility model discloses a spiral winding composite paper tube which comprises a paper tube body, the paper tube body comprises an inner paper layer and an outer paper layer, and a middle composite layer is arranged between the inner paper layer and the outer paper layer. The inner paper layer, the outer paper layer and the middle composite layer are spirally wound and are bonded through an adhesive to form an integrated structure; the inner paper layer is kraft paper; the outer paper layer is coated paper; the middle composite layer is formed by compositing a plurality of layers of aramid paper, a plurality of circular grooves which are evenly distributed at equal intervals are formed in the outer surface of the middle composite layer in the axial direction, and supporting rings are installed in the circular grooves. According to the utility model, the inner paper layer made of kraft paper is arranged, so that a better toughness and strength basis can be provided; by arranging the outer paper layer made of the coated paper, better appearance quality and certain waterproof, wear-resistant and other properties can be provided; through the middle composite layer formed by compositing the multiple layers of aramid paper, the paper tube has the excellent performance of high strength, high modulus, high temperature resistance and the like, and the overall strength and performance of the paper tube are improved.

Description

Technical Field

[0001] This utility model relates to the field of paper tube technology, specifically to a spiral wound composite paper tube. Background Technology

[0002] In modern industrial production and daily life, paper tubes are widely used as a common packaging and support material in many fields such as textiles, papermaking, plastic film, and construction. For example, in the textile industry, paper tubes are used to wind yarn; in plastic film production, paper tubes serve as the core carrier for film winding. Traditional paper tubes are usually made of a single paper material or simple multi-layered paper materials, resulting in low strength. Under greater pressure or load, they are prone to deformation and breakage, failing to meet the requirements of applications with high strength requirements.

[0003] Based on the above, this utility model proposes a spiral wound composite paper tube, which can effectively solve the above problems. Utility Model Content

[0004] This utility model addresses the shortcomings of the existing technology by providing a spiral-wound composite paper tube.

[0005] This utility model is achieved through the following technical solution:

[0006] A spirally wound composite paper tube includes a paper tube body, which comprises an inner paper layer and an outer paper layer, with an intermediate composite layer between the inner and outer paper layers. The inner paper layer, outer paper layer, and intermediate composite layer are spirally wound together and bonded together with an adhesive to form an integral structure. The inner paper layer is kraft paper; the outer paper layer is coated paper; and the intermediate composite layer is composed of multiple layers of aramid paper. The outer surface of the intermediate composite layer has multiple evenly distributed circular grooves along the axial direction, and a support ring is installed in each of the circular grooves.

[0007] According to the above technical solution, as a further preferred technical solution, both ends of the paper tube body are provided with inwardly recessed annular grooves, and end caps are installed in the annular grooves; the end caps are provided with inwardly extending protrusions, and a through hole is opened at the center of the protrusions; the top of the protrusions is provided with a flange that cooperates with and connects to the annular grooves.

[0008] According to the above technical solution, as a further preferred technical solution, the end cap and the paper tube body are bonded together with adhesive.

[0009] According to the above technical solution, as a further preferred technical solution, the end cap is made of metal, plastic or high-density fiberboard.

[0010] According to the above technical solution, as a further preferred technical solution, the support ring is made of high-strength plastic material or metal alloy material.

[0011] Compared with the prior art, this utility model has the following advantages and beneficial effects:

[0012] This utility model provides a spiral-wound composite paper tube. By setting an inner paper layer made of kraft paper, it can provide good toughness and strength. By setting an outer paper layer made of coated paper, it can provide good appearance quality and certain waterproof and wear-resistant properties. The intermediate composite layer composed of multiple aramid paper has excellent properties such as high strength, high modulus and high temperature resistance, which improves the overall strength and performance of the paper tube. Furthermore, the circular groove on the outer surface of the intermediate composite layer and the support ring inside the groove further enhance the radial support force of the paper tube, improve the compressive strength and stability of the paper tube, and enable it to better withstand external pressure and load. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the end structure of the paper tube body of this utility model;

[0015] Figure 3 This is a cross-sectional schematic diagram of the paper tube body of this utility model;

[0016] Figure 4 This is a schematic diagram of the end cap structure of this utility model. Detailed Implementation

[0017] To enable those skilled in the art to better understand the technical solution of this utility model, the preferred embodiments of this utility model are described below in conjunction with specific examples. However, it should be understood that the accompanying drawings are for illustrative purposes only and should not be construed as limiting this patent. For better illustration of this embodiment, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual product dimensions. It is understandable that some well-known structures and their descriptions may be omitted in the drawings for those skilled in the art. The positional relationships described in the drawings are for illustrative purposes only and should not be construed as limiting this patent.

[0018] A spirally wound composite paper tube includes a paper tube body 1, which includes an inner paper layer 2 and an outer paper layer 3, with an intermediate composite layer 4 between the inner paper layer 2 and the outer paper layer 3; the inner paper layer 2, the outer paper layer 3, and the intermediate composite layer 4 are spirally wound together and bonded together with an adhesive to form an integral structure; the inner paper layer 2 is kraft paper; the outer paper layer 3 is coated paper; the intermediate composite layer 4 is composed of multiple layers of aramid paper, and the outer surface of the intermediate composite layer 4 is provided with a plurality of evenly distributed circular grooves 5 along the axial direction, with support rings 6 installed in the circular grooves 5.

[0019] This invention provides a good foundation of toughness and strength by setting an inner paper layer 2 made of kraft paper; it provides a good appearance quality and certain waterproof and wear-resistant properties by setting an outer paper layer 3 made of coated paper; and it has excellent properties such as high strength, high modulus and high temperature resistance by setting an intermediate composite layer 4 made of multiple aramid paper layers, which improves the overall strength and performance of the paper tube. Furthermore, the circular groove 5 on the outer surface of the intermediate composite layer and the support ring 6 inside the groove further enhance the radial support force of the paper tube, improve the compressive strength and stability of the paper tube, and enable it to better withstand external pressure and load.

[0020] Furthermore, in another embodiment, the two ends of the paper tube body 1 are provided with inwardly recessed annular grooves 7, and end caps 8 are installed in the annular grooves 7; the end caps 8 are provided with inwardly extending protrusions 9, and a through hole 10 is provided at the center of the protrusions 9; the top of the protrusions 9 is provided with a flange 11 that cooperates with and connects to the annular grooves 7.

[0021] By providing annular grooves 7 at both ends of the paper tube body 1, the annular grooves 7 facilitate connection with the end caps 8. The paper tube can enhance the overall strength and rigidity of the end of the paper tube body 1 to a certain extent, preventing the paper tube from deforming or denting under pressure. The end caps 8 are provided with an inwardly extending protrusion 9, and a through hole 10 is opened at the center of the protrusion 9. The through hole 10 can be used for threading, installing connectors, etc., increasing the flexibility of the paper tube. The top of the protrusion 9 is provided with a flange 11 that connects with the annular grooves 7, making the connection between the end caps 8 and the paper tube body 1 tighter and more stable, further improving the stability and sealing of the overall structure of the paper tube.

[0022] Furthermore, in another embodiment, the end cap 8 is bonded to the paper tube body 1 with adhesive.

[0023] The end cap 8 is bonded to the paper tube body 1 with glue. The glue bonding method is simple and convenient, and can ensure the connection strength between the end cap 8 and the paper tube body 1 to a certain extent, ensuring that the end cap will not easily fall off during use, thereby ensuring the sealing and structural stability of both ends of the paper tube and further enhancing the overall performance of the paper tube.

[0024] Furthermore, in another embodiment, the end cap 8 is made of metal, plastic, or high-density fiberboard.

[0025] End caps 8 are made of metal, plastic, or high-density fiberboard. Metal end caps have high strength and hardness, providing good protection and pressure resistance; plastic end caps are lightweight, corrosion-resistant, and low-cost, making them suitable for applications where weight and cost are critical; high-density fiberboard end caps have good processing performance and a certain strength. The appropriate end cap material can be selected according to different usage requirements and application scenarios, improving the applicability and practicality of paper tubes.

[0026] Furthermore, in another embodiment, the support ring 6 is made of high-strength plastic or metal alloy.

[0027] The support ring, made of high-strength plastic or metal alloy, provides high strength and rigidity. It can withstand greater pressure and load, improving the compressive strength and stability of the paper tube and extending its service life.

[0028] Based on the description and drawings of this utility model, those skilled in the art can easily manufacture or use the spiral wound composite paper tube of this utility model, and can produce the positive effects described in this utility model.

[0029] Unless otherwise specified, in this utility model, terms such as "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe orientation or positional relationships in this utility model are for illustrative purposes only and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood in conjunction with the accompanying drawings and according to the specific circumstances.

[0030] Unless otherwise expressly specified and limited, the terms "set up," "connected," and "linked" in this utility model should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0031] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Any simple modifications or equivalent changes made to the above embodiments based on the technical essence of the present utility model shall fall within the protection scope of the present utility model.

Claims

1. A spiral-wound composite paper tube, characterized in that: The device includes a paper tube body (1), which includes an inner paper layer (2) and an outer paper layer (3), with an intermediate composite layer (4) between the inner paper layer (2) and the outer paper layer (3); the inner paper layer (2), the outer paper layer (3) and the intermediate composite layer (4) are spirally wound together and bonded together with an adhesive to form an integral structure; the inner paper layer (2) is kraft paper; the outer paper layer (3) is coated paper; the intermediate composite layer (4) is composed of multiple layers of aramid paper, and the outer surface of the intermediate composite layer (4) is provided with multiple circular grooves (5) evenly distributed at equal intervals along the axial direction, and a support ring (6) is installed in the circular groove (5).

2. The spiral wound composite paper tube according to claim 1, characterized in that: The paper tube body (1) has inwardly recessed annular grooves (7) at both ends, and end caps (8) are installed in the annular grooves (7); the end caps (8) have inwardly extending protrusions (9), and a through hole (10) is opened at the center of the protrusions (9); the top of the protrusions (9) has a flange (11) that is connected to the annular grooves (7).

3. The spiral wound composite paper tube according to claim 2, characterized in that: The end cap (8) is bonded to the paper tube body (1) with glue.

4. The spiral wound composite paper tube according to claim 2, characterized in that: The end cap (8) is made of metal, plastic or high-density fiberboard.

5. The spiral-wound composite paper tube according to claim 1, characterized in that: The support ring (6) is made of high-strength plastic or metal alloy.

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