High-strength paper tube

Abstract

The utility model discloses a kind of high-strength chemical fiber paper tubes, belong to chemical fiber paper tube technical field, its technical scheme main points include chemical fiber paper tube body, the chemical fiber paper tube body includes inner core layer, reinforcing composite layer and outer protective layer, the inner core layer, reinforcing composite layer and outer protective layer are sequentially arranged from inside to outside, the both sides of the chemical fiber paper tube body inside are adhered with end reinforcing ring, and end reinforcing ring and inner core layer inner diameter keep consistent, the inner wall of the chemical fiber paper tube body is provided with ribbed plate extending in axial direction;The inner core layer includes two surface layers, and the rigid support is formed by the honeycomb paper base material and resin-based filling body of inner core layer, cooperate with the warp and weft weaving and axial tensioning rib of reinforcing composite layer, construct the three-dimensional stress system of radial anti-expansion and axial tensile, can solve the problem of traditional paper tube drum waist and interlayer peeling, and by outer protective layer and wear-resistant layer combination, can improve surface wear resistance, avoid paper powder generation, also enhance the anti-aging ability of paper tube.

Description

Technical Field

[0001] This utility model relates to the field of chemical fiber paper tube technology, and in particular to a high-strength chemical fiber paper tube. Background Technology

[0002] Chemical fiber paper tubes are special industrial paper tubes used in winding processes such as chemical fiber production, spinning, and texturing to carry fiber materials. In chemical fiber production, paper tubes serve as the core carrier for winding fiber filaments, and their strength directly determines whether they can support the winding requirements of fiber filaments of different specifications.

[0003] Existing chemical fiber paper tubes are usually made of ordinary kraft paper. Traditional paper tubes are prone to radial deformation and axial stretching during high-speed winding. They are also prone to waist deformation during winding, which leads to loose winding of fiber filaments and misalignment between layers, affecting subsequent unwinding and use. In addition, traditional paper tubes are only bonded between layers with ordinary glue, which easily leads to interlayer peeling and axial tensile breakage.

[0004] Therefore, a high-strength chemical fiber paper tube is proposed. Utility Model Content

[0005] The purpose of this utility model is to provide a high-strength chemical fiber paper tube, which can solve the problems of existing chemical fiber paper tubes, which are usually made of ordinary kraft paper. Traditional paper tubes are prone to radial deformation and axial stretching during high-speed winding. They are also prone to waist deformation during winding, resulting in loose winding of fiber filaments and interlayer misalignment, which affects subsequent unwinding and use. In addition, the interlayer of traditional paper tubes is only bonded by ordinary glue, which is prone to interlayer peeling and axial tensile breakage.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a high-strength chemical fiber paper tube, comprising a chemical fiber paper tube body, wherein the chemical fiber paper tube body comprises an inner core layer, a reinforcing composite layer and an outer protective layer, wherein the inner core layer, the reinforcing composite layer and the outer protective layer are arranged sequentially from the inside to the outside, wherein end reinforcing rings are bonded to both sides inside the chemical fiber paper tube body, and the end reinforcing rings are consistent with the inner diameter of the inner core layer, wherein the inner wall of the chemical fiber paper tube body is provided with axially extending ribs;

[0007] The inner core layer includes two covering layers, with a honeycomb paper substrate disposed between opposite sides of the two covering layers, and the honeycomb pores of the honeycomb paper substrate are filled with resin-based filler.

[0008] Preferably, the honeycomb paper substrate is made of kraft paper impregnated with phenolic resin, and the covering layer is made of high-strength kraft paper.

[0009] Preferably, the reinforcing composite layer includes a warp and weft braided layer and an axial tie bar. The warp and weft braided layer covers the outer surface of the inner core layer, and the axial tie bar is evenly distributed along the circumferential direction of the warp and weft braided layer and woven and fixed with the warp and weft braided layer.

[0010] Preferably, the warp and weft braided layer is woven with glass fiber as the warp and polyester fiber as the weft, and the axial tension is made of aramid fiber bundles.

[0011] Preferably, the outer protective layer is made of polyester nonwoven fabric impregnated with epoxy resin, and the surface of the outer protective layer is also coated with a wear-resistant layer.

[0012] Preferably, the wear-resistant layer is a nano-ceramic coating with a thickness of 0.02-0.05 mm.

[0013] Preferably, the surface of the inner core layer is provided with a plurality of annular reinforcing hoops distributed along the axial direction of the inner core layer, and the annular reinforcing hoops are made of glass fiber tape impregnated with modified epoxy resin.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. This application forms a rigid support by using the honeycomb paper substrate and resin-based filler in the inner core layer, and with the warp and weft weaving and axial tension of the reinforced composite layer, it constructs a three-dimensional force system with radial anti-expansion and axial tensile strength, which can solve the problems of bulging and interlayer delamination in traditional paper tubes. Furthermore, by combining the outer protective layer and the wear-resistant layer, it can improve the surface wear resistance, prevent paper dust generation, and enhance the anti-aging ability of the paper tube.

[0016] 2. This application further strengthens the key stress areas by using end reinforcing rings and inner wall ribs to ensure that the paper tube maintains its structural integrity during high-tension winding, making it suitable for harsh scenarios such as coarse denier fibers and heavy rolls. Attached Figure Description

[0017] Figure 1 This is an overall structural diagram of the high-strength chemical fiber paper tube of this utility model;

[0018] Figure 2 This is a schematic diagram of the structure of the chemical fiber paper tube body of this utility model;

[0019] Figure 3 This is a cross-sectional schematic diagram of the inner core layer of this utility model;

[0020] Figure 4 This is a cross-sectional schematic diagram of the reinforcing composite layer of this utility model;

[0021] Figure 5 This is a schematic diagram showing the connection between the inner core layer and the annular reinforcing hoop of this utility model.

[0022] In the diagram, 1 is the chemical fiber paper tube body; 2 is the inner core layer; 21 is the outer covering layer; 22 is the honeycomb paper substrate; 3 is the reinforcing composite layer; 31 is the warp and weft braided layer; 32 is the axial tie; 4 is the outer protective layer; 5 is the end reinforcing ring; 6 is the rib plate; 7 is the wear-resistant layer; and 8 is the annular reinforcing hoop. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figure 1-5 The present invention provides the following technical solution:

[0025] A high-strength chemical fiber paper tube includes a chemical fiber paper tube body 1. The chemical fiber paper tube body 1 includes an inner core layer 2, a reinforcing composite layer 3, and an outer protective layer 4. The inner core layer 2, the reinforcing composite layer 3, and the outer protective layer 4 are arranged sequentially from the inside to the outside. Both sides of the inside of the chemical fiber paper tube body 1 are bonded with end reinforcing rings 5, and the end reinforcing rings 5 ​​have the same inner diameter as the inner core layer 2. The inner wall of the chemical fiber paper tube body 1 is provided with axially extending ribs 6.

[0026] The inner core layer 2 includes two covering layers 21, and a honeycomb paper substrate 22 is disposed between opposite sides of the two covering layers 21, and the honeycomb pores of the honeycomb paper substrate 22 are filled with resin-based filler.

[0027] In this embodiment: the inner core layer 2, the reinforcing composite layer 3, and the outer protective layer 4 form a complete functional enhancement from the inside out, providing support, reinforcement, and protection. The inner core layer 2 provides core rigidity through the honeycomb paper substrate 22 and the resin filler. The two covering layers 21 sandwich the honeycomb paper substrate 22, forming a stable "sandwich"-like structure. The hexagonal geometry of the honeycomb cells can evenly distribute radial pressure, and the rigidity supplementation of the resin-based filler prevents the paper tube from bulging and deforming in the middle during winding. The reinforcing composite layer 3 specifically improves tensile and deformation resistance, while the outer protective layer 4 resists external forces. To mitigate the impact of friction and environmental erosion, a three-layer synergy approach addresses the shortcomings of traditional single-layer paper tubes, such as limited strength and susceptibility to damage, enabling the paper tube to withstand high-tension winding requirements. By ensuring that the end reinforcing ring 5 maintains the same inner diameter as the inner core layer 2, the end structural strength is enhanced without affecting the fit with the winding spindle, preventing cracking at the ends of traditional paper tubes due to concentrated stress. The axial ribs 6 installed on the inner wall of the chemical fiber paper tube body 1 act as an internal skeleton, improving the torsional stiffness and coaxiality of the paper tube, ensuring no deviation of the paper tube during winding, smooth winding of the fiber filaments, and reducing the problem of loose filament bundles during subsequent unwinding.

[0028] Specifically, such as Figure 3 As shown, the honeycomb paper substrate is made of kraft paper impregnated with phenolic resin, and the facing layer 21 is composed of high-strength kraft paper.

[0029] Specifically, such as Figure 4 As shown, the reinforcing composite layer 3 includes a warp and weft braided layer 31 and an axial tensioner 32. The warp and weft braided layer 31 covers the outer surface of the inner core layer 2, and the axial tensioner 32 is evenly distributed along the circumferential direction of the warp and weft braided layer 31 and is braided and fixed with the warp and weft braided layer 31.

[0030] Specifically, such as Figure 4 As shown, the warp and weft braided layer 31 is woven with glass fiber as the warp and polyester fiber as the weft, and the axial tension rib 32 is made of aramid fiber bundles.

[0031] In this embodiment: the honeycomb paper substrate is made of kraft paper impregnated with phenolic resin. The phenolic resin not only improves the kraft paper's resistance to damp heat, preventing softening of the substrate due to the high humidity environment of the chemical fiber workshop, but also enhances the rigidity of the honeycomb cell walls, making the honeycomb structure less prone to collapse under radial pressure. Compared to ordinary kraft paper, the substrate treated with resin has significantly improved aging resistance, extending the overall service life of the paper tube. The facing layer 21 is made of high-strength kraft paper, which has higher fiber density and stronger tear resistance, tightly wrapping the honeycomb paper substrate 22 and preventing fiber loosening at the edges of the honeycomb cells due to stress. Simultaneously, the high-strength kraft paper has good compatibility with the inner core layer 2 and the reinforcing composite layer 3, forming a tightly bonded interface through adhesives, eliminating the risk of interlayer peeling and ensuring uniform stress distribution throughout the inner core layer 2, further improving the paper tube's performance. Radial compressive strength: The warp and weft braided layer 31 covers the outer surface of the inner core layer 2. Its interwoven fiber structure can form a continuous circumferential constraint to resist the radial centrifugal force during high-speed winding of the paper tube, avoiding bulging deformation. At the same time, the braided structure has a certain degree of elasticity, which can buffer minor impacts during the winding process (such as fiber tension fluctuations), reduce damage caused by local stress concentration, and improve the impact resistance of the paper tube. The axial tension ribs 32 are evenly distributed along the circumference and braided and fixed with the warp and weft braided layer 31 to form an axial "force-bearing skeleton", which can directly resist the axial tension generated by large rolls of heavy fiber filaments, avoiding interlayer peeling and tensile breakage caused by insufficient axial strength in traditional paper tubes. The braiding and fixing method of the tension ribs and the braided layer ensures that the tension can be evenly transmitted to the entire paper tube, without local weak points, further enhancing the overall stability of the paper tube.

[0032] Specifically, such as Figure 2 As shown, the outer protective layer 4 is made of polyester nonwoven fabric impregnated with epoxy resin, and the surface of the outer protective layer 4 is also coated with a wear-resistant layer 7.

[0033] Specifically, such as Figure 2 As shown, the wear-resistant layer 7 is a nano-ceramic coating with a thickness of 0.02-0.05 mm.

[0034] In this embodiment: the outer protective layer 4 is made of polyester nonwoven fabric impregnated with epoxy resin. The epoxy resin not only improves the rigidity and wear resistance of the nonwoven fabric, but also enhances its bonding strength with the reinforcing composite layer 3, preventing the outer protective layer 4 from falling off due to friction during the winding process. The porous structure of the nonwoven fabric allows the epoxy resin to fully penetrate, forming a uniform protective layer without any local weak points, ensuring that the surface of the paper tube is generally wear-resistant and scratch-resistant. By coating the surface of the outer protective layer 4 with a wear-resistant layer 7, the coefficient of friction between the fiber and the surface of the paper tube can be directly reduced, reducing friction damage during the winding process. This not only prevents paper dust from contaminating the fiber due to wear on the surface of the paper tube, but also prevents the fiber from fuzzing or breaking due to friction, ensuring the quality of the chemical fiber product.

[0035] Specifically, such as Figure 5 As shown, the surface of the inner core layer 2 is provided with several annular reinforcing hoops 8 distributed along the axial direction of the inner core layer 2, and the annular reinforcing hoops 8 are made of glass fiber tape impregnated with modified epoxy resin.

[0036] In this embodiment: the middle part of the paper tube is the main stress area during the winding process (the amount of fiber winding is the largest and the tension is the most concentrated). The annular reinforcing hoop 8 is made of glass fiber tape impregnated with modified epoxy resin. Its high modulus characteristics can directly enhance the radial stiffness of the middle part, avoiding the sinking and bulging of the middle part due to excessive stress. In addition, since the weaving structure of the glass fiber tape is compatible with the warp and weft weaving layers 31 of the reinforcing composite layer 3, it can form a tightly integrated whole without local protrusions affecting the winding.

[0037] Working Principle: When the chemical fiber paper tube body 1 is in use, the winding equipment starts, and the fiber filaments begin to wind along the surface of the outer protective layer 4 of the paper tube. The fiber filaments first come into contact with the impregnated nonwoven fabric and nano-ceramic wear-resistant layer 7 of the outer protective layer 4. The wear-resistant layer 7, with its high hardness, reduces surface wear caused by fiber friction and avoids paper dust generation. The epoxy resin coating of the impregnated nonwoven fabric enhances surface rigidity and prevents local depressions caused by excessive fiber winding tension. As winding proceeds, the fiber tension is gradually transferred to the reinforcing composite layer 3. The warp and weft braided layer 31 evenly disperses radial centrifugal force through its interlaced structure, preventing the paper tube from bulging and deforming. The axial tension rib 32 directly bears the axial tension, preventing axial tensile breakage of the paper tube caused by large rolls of heavy fiber filaments. At the same time, the braiding and fixing method of the tension rib and the braided layer ensures... The stress can be transferred to the entire paper tube without localized stress concentration. During this process, the honeycomb paper substrate 22 of the inner core layer 2 and the resin-based filler form a rigid support. The hexagonal honeycomb holes evenly distribute the radial pressure. Combined with the clamping and fixing of the two covering layers 21, the middle of the paper tube maintains structural integrity even when subjected to maximum winding tension. The annular reinforcing hoop 8 further strengthens the stress concentration area in the middle, preventing the middle from sinking due to excessive winding, ensuring that the fiber filaments are wound flat and there is no misalignment between layers. The end reinforcing ring 5 always maintains a tight fit with the main shaft to prevent the paper tube end from sliding relative to the main shaft during winding. The inner wall ribs 6 continuously improve the torsional stiffness of the paper tube. Even if the equipment vibrates slightly, it can ensure that the paper tube rotates coaxially and the fiber filament winding trajectory is stable, reducing the risk of breakage.

[0038] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A high-strength synthetic fiber paper tube, comprising a synthetic fiber paper tube body (1), characterized in that: The chemical fiber paper tube body (1) includes an inner core layer (2), a reinforcing composite layer (3) and an outer protective layer (4). The inner core layer (2), the reinforcing composite layer (3) and the outer protective layer (4) are arranged sequentially from the inside to the outside. Both sides of the inside of the chemical fiber paper tube body (1) are bonded with end reinforcing rings (5), and the end reinforcing rings (5) are consistent with the inner diameter of the inner core layer (2). The inner wall of the chemical fiber paper tube body (1) is provided with axially extending ribs (6). The inner core layer (2) includes two covering layers (21), and a honeycomb paper substrate (22) is disposed between opposite sides of the two covering layers (21), and the honeycomb pores of the honeycomb paper substrate (22) are filled with resin-based filler.

2. The high-strength chemical fiber paper tube according to claim 1, characterized in that: The honeycomb paper substrate is made of kraft paper impregnated with phenolic resin, and the covering layer (21) is made of high-strength kraft paper.

3. The high-strength chemical fiber paper tube according to claim 1, characterized in that: The reinforcing composite layer (3) includes a warp and weft braided layer (31) and an axial tie (32). The warp and weft braided layer (31) covers the outer surface of the inner core layer (2). The axial tie (32) is evenly distributed along the circumference of the warp and weft braided layer (31) and is braided and fixed with the warp and weft braided layer (31).

4. A high-strength chemical fiber paper tube according to claim 3, characterized in that: The warp and weft braided layer (31) is woven with glass fiber as the warp and polyester fiber as the weft, and the axial tension bar (32) is made of aramid fiber bundles.

5. A high-strength chemical fiber paper tube according to claim 1, characterized in that: The outer protective layer (4) is made of polyester nonwoven fabric impregnated with epoxy resin, and the surface of the outer protective layer (4) is also coated with a wear-resistant layer (7).

6. A high-strength chemical fiber paper tube according to claim 5, characterized in that: The wear-resistant layer (7) is a nano-ceramic coating with a thickness of 0.02-0.05 mm.

7. A high-strength chemical fiber paper tube according to claim 1, characterized in that: The surface of the inner core layer (2) is provided with a plurality of annular reinforcing hoops (8) distributed along the axial direction of the inner core layer (2), and the annular reinforcing hoops (8) are made of glass fiber tape impregnated with modified epoxy resin.

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