Wood pulp composite non-woven fabric and manufacturing method of wood pulp composite non-woven fabric

Abstract

The invention provides a wood pulp composite non-woven fabric which comprises melt-blown cellosilk and is long in fiber length. The wood pulp cellosilk and the melt-blown cellosilk are wound together to form the net-shaped structure; or the two and the polymer particles are embedded into the net-shaped structure and are wound, coated and fixed by the melt-blown cellosilk and / or wood pulp cellosilk; the melt-blown cellosilk, the wood pulp cellosilk or the melt-blown cellosilk, the wood pulp cellosilk and the polymer particles are mixed and woven in the air through an airflow forming process to form an integrated composite structure The invention provides a manufacturing method of a wood pulp composite non-woven fabric. The manufacturing method comprises the following steps: synchronously conveying melt-blown cellosilk, wood pulp cellosilk or polymer particles to the same airflow mixing area through independent airflow channels respectively; in the airflow mixing area, the melt-blown cellosilk, the wood pulp cellosilk or the polymer particles are mutually collided and entangled in a turbulent flow field to form a single-layer mixed fiber cloud; and depositing the single-layer mixed fiber cloud on the surface of a roller, and carrying out hot rolling reinforcement to obtain the wood pulp composite non-woven fabric.

Description

Technical Field

[0001] This application relates to the field of nonwoven fabrics, and more particularly to a wood pulp composite nonwoven fabric and a method for manufacturing the wood pulp composite nonwoven fabric. Background Technology

[0002] Wood pulp composite nonwoven fabrics, combining the excellent absorbency and skin-friendliness of natural wood pulp fibers with the mechanical strength of synthetic fibers, have been widely used in the manufacture of absorbent cores for personal care products such as sanitary napkins, baby diapers, and adult incontinence products. As consumers increasingly demand thinner, softer, and more breathable products, the structural design and molding processes of wood pulp composite nonwoven fabrics continue to evolve.

[0003] Currently, the mainstream wood pulp fiber absorbent core in the industry mainly adopts a three-layer composite structure of meltblown-wood pulp-water-absorbent molecules. Its typical process is as follows: meltblown nonwoven fabric is used as the upper flow guiding layer, wood pulp fiber is laid in the middle layer, and superabsorbent polymer (SAP) particles or water-absorbent molecules are composited in the lower layer. The layered structure is formed by hot rolling or adhesive bonding.

[0004] However, the above-mentioned three-layer "sandwich" structure has the following technical problems in practical applications:

[0005] 1. The layers are mainly bonded together by hot melt adhesive or hot-rolled points, resulting in a limited interlayer bonding area. During product use, after repeated compression and twisting, interlayer peeling, core breakage, or localized clumping can easily occur, leading to obstructed liquid diffusion, a sharp drop in absorption performance, and seriously affecting user comfort and safety.

[0006] 2. The superposition of the three layers of materials significantly increases the thickness of the core, and the relatively dense interface between the meltblown layer, the wood pulp layer, and the water-absorbing molecule layer hinders the longitudinal flow of air and moisture, resulting in a noticeable stuffy feeling. Prolonged use can easily cause skin sensitivity problems, which is especially unfavorable to the care needs of infants' delicate skin.

[0007] 3. The absorbent molecular layer is usually compounded under the wood pulp layer by dusting or spreading, which makes it difficult to achieve uniform interweaving with the wood pulp fibers. This can easily lead to the aggregation or discontinuity of SAP particles, resulting in an "island effect" where some areas are saturated while the surrounding areas remain dry, thus reducing the overall utilization rate of the core.

[0008] Therefore, the existing "sandwich" three-layer structure of wood pulp fiber absorbent core has obvious shortcomings in terms of interlayer bonding strength, lightness and breathability, uniform distribution of water-absorbing molecules and production economy. There is an urgent need for a new wood pulp composite nonwoven fabric technology solution with integrated structure, simple process and better performance. Summary of the Invention

[0009] In view of the above practical problems and the shortcomings of the existing technology, the main technical problem to be solved by the present invention is to provide a wood pulp composite nonwoven fabric and a method for manufacturing wood pulp composite nonwoven fabric. By combining dry spinning and air-jet forming processes, uniform dispersion and three-dimensional entanglement of wood pulp fibers, synthetic fibers and functional components in a single layer are achieved, fundamentally eliminating the interface defects of multi-layer structures.

[0010] To address the aforementioned technical problems, this application provides a wood pulp composite nonwoven fabric, comprising:

[0011] Meltblown fibers have relatively long fiber lengths and are wound together to form a single-layer or multi-layer mesh structure;

[0012] Wood pulp fibers are mixed and wound with meltblown fibers, and are wrapped and fixed by the meltblown fibers.

[0013] The meltblown fiber filaments and wood pulp fiber filaments are interwoven in the air through an airflow forming process to form an integrated composite structure, and the integrated composite structure is deposited to form a single-layer interwoven fiber web.

[0014] This application also provides another type of wood pulp composite nonwoven fabric, comprising:

[0015] Meltblown fibers have relatively long fiber lengths and are wound together to form a single-layer or multi-layer mesh structure;

[0016] Wood pulp fibers are mixed and wound with meltblown fibers to form the mesh structure, and are covered and fixed by the meltblown fibers through the winding method;

[0017] And at least one polymer particle, embedded in the mesh structure and wrapped and fixed by the meltblown fiber filaments and / or wood pulp fiber filaments;

[0018] The meltblown fiber filaments, wood pulp fiber filaments, and polymer particles are interwoven in the air through an airflow forming process to form an integrated composite structure, which is then deposited to form a single-layer interwoven fiber web.

[0019] In a preferred embodiment, the polymer particles are one or a mixture of at least two of the following: superabsorbent resin particles, thermoplastic elastomer particles, biodegradable polymer particles, and functional additive particles.

[0020] The functional additive particles include at least one of antibacterial agents, deodorants, and fragrance microcapsules.

[0021] In a preferred embodiment, the meltblown fiber is one or a mixture of at least two of polyolefin fibers, polyamide fibers, and polyurethane fibers.

[0022] In a preferred embodiment, the meltblown fiber is a single-component fiber, a two-component meltblown fiber, or a mixture of both; the surface of the two-component meltblown fiber contains a low-melting-point resin.

[0023] In a preferred embodiment, the bicomponent meltblown fiber is a bicomponent core-sheath type meltblown fiber, a bicomponent orange-petal type meltblown fiber, or a bicomponent side-by-side type meltblown fiber.

[0024] In a preferred embodiment, the weight of the wood pulp fiber filaments accounts for ≥50% of the total mass of the composite structure.

[0025] In a preferred embodiment, the meltblown fiber filament has a fiber length of 5-50 cm.

[0026] To address the aforementioned technical problems, this application provides a method for manufacturing wood pulp composite nonwoven fabric, comprising the following steps:

[0027] Step 1: Material preparation;

[0028] Preparation of meltblown fiber filaments: Thermoplastic polymer is melted and extruded, and meltblown fiber filaments are formed through a spinneret. The melt temperature, hot air temperature and speed are controlled to keep the meltblown fiber filaments at a relatively long length.

[0029] Preparation of wood pulp fiber filaments: Wood pulp fiberboard is debonded into single wood pulp fiber filaments;

[0030] Step 2: Single-layer aerial interweaving;

[0031] The meltblown fiber filaments and wood pulp fiber filaments are simultaneously transported to the same airflow mixing zone through independent airflow channels;

[0032] Within the airflow mixing zone, the meltblown fiber filaments and wood pulp fiber filaments collide and entangle with each other in the turbulent field, forming a single-layer mixed fiber cloud; the meltblown fiber filaments and wood pulp fiber filaments intertwine to form a network structure during the entanglement process;

[0033] Step 3: Deposition and molding;

[0034] The single-layer mixed fiber cloud is deposited on the surface of the roller under negative pressure suction to form a single-layer mixed woven fiber web.

[0035] Step 4: Hot melt solidification;

[0036] The single-layer blended fiber web is hot-rolled to reinforce it, so that the meltblown fiber filaments are hot-melted and bonded together, and the wood pulp fiber is fixed in the web structure to obtain wood pulp composite nonwoven fabric.

[0037] This application also provides a method for manufacturing wood pulp composite nonwoven fabric, comprising the following steps:

[0038] Step 1: Material preparation;

[0039] Preparation of meltblown fiber filaments: Thermoplastic polymer is melted and extruded, and meltblown fiber filaments are formed through a spinneret. The melt temperature, hot air temperature and speed are controlled to keep the meltblown fiber filaments at a relatively long length.

[0040] Preparation of wood pulp fiber filaments: Wood pulp fiberboard is debonded into single wood pulp fiber filaments;

[0041] Preparation of at least one type of polymer particle: drying and sieving the polymer particles to a predetermined particle size;

[0042] Step 2: Single-layer aerial interweaving;

[0043] The meltblown fiber filaments, wood pulp fiber filaments, and at least one polymer particle are simultaneously transported to the same airflow mixing zone through independent airflow channels;

[0044] Within the airflow mixing zone, the meltblown fiber filaments, wood pulp fiber filaments, and at least one polymer particle collide and entangle with each other in the turbulent field, forming a single-layer mixed fiber cloud;

[0045] The meltblown fiber filaments and wood pulp fiber filaments intertwine to form a mesh structure during the entanglement process, while simultaneously coating and fixing the polymer particles;

[0046] Step 3: Deposition and molding;

[0047] The single-layer mixed fiber cloud is deposited on the surface of the roller under negative pressure suction to form a single-layer mixed woven fiber web.

[0048] Step 4: Hot melt solidification;

[0049] The single-layer blended fiber web is hot-rolled to reinforce it, so that the meltblown fiber filaments are hot-melted and bonded together, fixing the wood pulp fiber and polymer particles in the web structure to obtain wood pulp composite nonwoven fabric.

[0050] In summary, this application has the following beneficial effects:

[0051] 1. Through the airflow forming process, meltblown fiber filaments, wood pulp fiber filaments and polymer particles are sprayed out at the same time and converge in the air to form an airflow mixing zone. The turbulence generated by the airflow causes them to collide and entangle with each other, so that the meltblown fiber filaments and wood pulp fiber filaments are wrapped together to form a network structure, while simultaneously covering and fixing the polymer particles, and finally depositing to form a single-layer wood pulp fiber absorbent core.

[0052] 2. By utilizing airflow forming to form an integrated composite structure in one step, the process is simplified from multi-layer stacking to single-layer co-entanglement, breaking through the traditional physical stacking preparation process of lamination composites.

[0053] 3. By utilizing the dual consolidation of meltblown fiber thermal self-adhesion and mechanical winding, chemical bonding is eliminated, achieving an environmentally friendly upgrade from external bonding to internal consolidation. Attached Figure Description

[0054] Figure 1 This is a schematic diagram of the mesh structure formed by the joint winding of meltblown fiber filaments and wood pulp fiber filaments in this embodiment. Detailed Implementation

[0055] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0056] In the description of this invention, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., 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 the invention and for 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, they should not be construed as limitations on the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0057] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed", "equipped", "sleeved / connected", "connected", etc., should be interpreted broadly. For example, "connection" can be a wall-mounted connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. For those skilled in the art, the specific meaning of the above terms in this invention can be understood according to the specific circumstances.

[0058] The following is in conjunction with the appendix Figure 1 This application will be described in further detail.

[0059] This embodiment provides a wood pulp composite nonwoven fabric, which is a single-layer nonwoven fabric structure composed of meltblown fiber filaments 1 and wood pulp fiber filaments 2 (e.g., ...). Figure 1 (as shown), or a single-layer nonwoven fabric structure composed of meltblown fiber filaments, wood pulp fiber filaments and at least one polymer particle.

[0060] like Figure 1 As shown, the specific structure includes:

[0061] Meltblown fiber filament 1 has a relatively long fiber length and is wound to form a single-layer or multi-layer mesh structure;

[0062] Wood pulp fiber filaments 2 are mixed and wound with meltblown fibers to form the mesh structure, and are covered and fixed by the meltblown fiber filaments through the winding method;

[0063] Or at least one polymer particle, embedded in the mesh structure and wrapped and fixed by the meltblown fiber filaments and / or wood pulp fiber;

[0064] The meltblown fiber, wood pulp fiber, or both and polymer particles are mixed and woven in the air through an airflow forming process to form an integrated composite structure. The integrated composite structure is deposited to form a single-layer mixed-woven fiber web, and finally hot-pressed to form a wood pulp composite nonwoven fabric, which is used as a single-layer wood pulp fiber core.

[0065] In the structure of this wood pulp composite nonwoven fabric, polymer particles can be added on the basis of the combination of meltblown fiber filaments and wood pulp fiber filaments. Using airflow molding process, meltblown fiber filaments, wood pulp fiber filaments and polymer particles are sprayed out at the same time. The polymer particles are embedded in the mesh structure formed by the entanglement of meltblown fiber filaments and wood pulp fiber filaments under airflow, and are wrapped and fixed by the entanglement of meltblown fiber filaments and / or wood pulp fiber filaments.

[0066] In this embodiment, the provided wood pulp composite nonwoven fabric adopts a fiber winding composite structure. The longer meltblown fibers and wood pulp fibers are actively wound into a web by mixing and winding them together in the airflow forming process. The meltblown fibers and wood pulp fibers are uniformly mixed and wound, and the structure is non-layered. The semi-molten meltblown fibers form point contact adhesion and mechanical coating with the wood pulp fibers during the cooling process, fixing the wood pulp fibers or polymer particles, which improves the tensile strength of the wood pulp composite nonwoven fabric and prevents the phenomenon of wood pulp fibers or polymer particles falling off during use.

[0067] This embodiment achieves single-layer hybrid weaving by co-winding meltblown fiber filaments and wood pulp fiber filaments and air-forming, thus replacing single-fiber layering with dual-fiber filament synergistic winding and chemical bonding with dual consolidation of mechanical winding and thermal melting. It significantly outperforms existing technologies in four dimensions: structural performance, functional efficiency, process economy, and environmental sustainability, providing an efficient, green, and high-performance solution for the field of wood pulp composite nonwoven fabrics.

[0068] In this embodiment, the polymer particles are one or a mixture of at least two of the following: superabsorbent resin particles, thermoplastic elastomer particles, biodegradable polymer particles, and functional additive particles; the functional additive particles include at least one of antibacterial agents, deodorants, and fragrance microcapsules.

[0069] In this embodiment, the meltblown fiber is one of polyolefin fiber, polyamide fiber, polyurethane fiber, or a mixture of at least two of them.

[0070] In this embodiment, the meltblown fiber is a single-component fiber, a two-component meltblown fiber, or a mixture of both; the surface of the two-component meltblown fiber contains a low-melting-point resin. The two-component meltblown fiber is a two-component core-sheath type meltblown fiber, a two-component orange-petal type meltblown fiber, or a two-component side-by-side type meltblown fiber.

[0071] In this embodiment, the weight of the wood pulp fiber filaments accounts for ≥50% of the total mass of the composite structure.

[0072] In this embodiment, the fiber length of the meltblown fiber is 5-50cm.

[0073] Based on the wood pulp composite nonwoven fabric described above, this embodiment also provides a method for manufacturing the wood pulp composite nonwoven fabric, used to prepare the wood pulp composite nonwoven fabric.

[0074] The first manufacturing method (excluding polymer particles) includes the following steps:

[0075] Step 1: Material preparation;

[0076] Preparation of meltblown fiber filaments: Thermoplastic polymer is melted and extruded, and meltblown fiber filaments are formed through a spinneret. The melt temperature, hot air temperature and speed are controlled to keep the meltblown fiber filaments at a relatively long length.

[0077] Preparation of wood pulp fiber filaments: Wood pulp fiberboard is debonded into single wood pulp fiber filaments;

[0078] Step 2: Single-layer aerial interweaving;

[0079] The meltblown fiber filaments and wood pulp fiber filaments are simultaneously transported to the same airflow mixing zone through independent airflow channels;

[0080] Within the airflow mixing zone, the meltblown fiber filaments and wood pulp fiber filaments collide and entangle with each other in the turbulent field, forming a single-layer mixed fiber cloud; the meltblown fiber filaments and wood pulp fiber filaments intertwine to form a network structure during the entanglement process;

[0081] Step 3: Deposition and molding;

[0082] The single-layer mixed fiber cloud is deposited on the surface of the roller under negative pressure suction to form a single-layer mixed woven fiber web.

[0083] Step 4: Hot melt solidification;

[0084] The single-layer blended fiber web is hot-rolled to reinforce it, so that the meltblown fiber filaments are hot-melted and bonded together, and the wood pulp fiber is fixed in the web structure to obtain wood pulp composite nonwoven fabric.

[0085] The second manufacturing method (including polymer particles) includes the following steps:

[0086] Step 1: Material preparation;

[0087] Preparation of meltblown fiber filaments: Thermoplastic polymer is melted and extruded, and meltblown fiber filaments are formed through a spinneret. The melt temperature, hot air temperature and speed are controlled to keep the meltblown fiber filaments at a relatively long length.

[0088] Preparation of wood pulp fiber filaments: Wood pulp fiberboard is debonded into single wood pulp fiber filaments;

[0089] Preparation of at least one type of polymer particle: drying and sieving the polymer particles to a predetermined particle size;

[0090] Step 2: Single-layer aerial interweaving;

[0091] The meltblown fiber filaments, wood pulp fiber filaments, and at least one polymer particle are simultaneously transported to the same airflow mixing zone through independent airflow channels;

[0092] Within the airflow mixing zone, the meltblown fiber filaments, wood pulp fiber filaments, and at least one polymer particle collide and entangle with each other in the turbulent field, forming a single-layer mixed fiber cloud;

[0093] The meltblown fiber filaments and wood pulp fiber filaments intertwine to form a mesh structure during the entanglement process, while simultaneously coating and fixing the polymer particles;

[0094] Step 3: Deposition and molding;

[0095] The single-layer mixed fiber cloud is deposited on the surface of the roller under negative pressure suction to form a single-layer mixed woven fiber web.

[0096] Step 4: Hot melt solidification;

[0097] The single-layer blended fiber web is hot-rolled to reinforce it, so that the meltblown fiber filaments are hot-melted and bonded together, fixing the wood pulp fiber and polymer particles in the web structure to obtain wood pulp composite nonwoven fabric.

[0098] In both manufacturing methods described above, the preparation of wood pulp fiber filaments involves processing wood pulp fiberboard into fiber filaments using a crusher, and then extruding them through a nozzle via an auxiliary airflow to form wood pulp fiber filaments. The preparation of meltblown fiber filaments utilizes a meltblown process, where thermoplastic resin is heated and melted into a fine molten stream. Then, a hot airflow is used to disperse the molten stream ejected from a spinneret into fiber bundles, which, along with the airflow, form meltblown fiber filaments.

[0099] Wood pulp fibers and meltblown fibers are wound and solidified together in the air through an airflow forming process, and then sprayed onto the surface of a roller. The wound fibers are adsorbed onto the roller surface by the negative pressure inside the roller, cooled and shaped, and the meltblown fibers form a meltblown fiber web. Under the action of the roller rolling, a multi-layer meltblown fiber web is formed. At the same time, the multi-layer meltblown fiber web wraps wood pulp fibers. After being pressed by hot rolling rollers, a composite wood pulp composite nonwoven fabric of a certain thickness is formed.

[0100] The above description is merely a preferred embodiment of the present invention, but the design concept of the present invention is not limited thereto. Any non-substantial modifications made to the present invention by those skilled in the art within the scope of the technology disclosed in the present invention using this concept shall be deemed as an infringement of the protection scope of the present invention.

Claims

1. A wood pulp composite nonwoven fabric, characterized by: comprise: melt-blown fiber filaments with longer fiber length, entangled to form a single-layer or multi-layer web structure; wood pulp fiber filaments mixedly entangled with the melt-blown fiber filaments, and fixedly wrapped by the melt-blown fiber filaments through entanglement; the melt-blown fiber filaments and wood pulp fiber filaments are mixedly woven in the air through an air-laying process to form an integrated composite structure, and the integrated composite structure is deposited to form a single-layer mixedly woven web.

2. A wood pulp composite nonwoven fabric, characterized by: comprise: melt-blown fiber filaments with longer fiber length, entangled to form a single-layer or multi-layer web structure; wood pulp fiber filaments mixedly entangled with the melt-blown fiber filaments, and fixedly wrapped by the melt-blown fiber filaments through entanglement; and at least one kind of high molecular particles embedded in the web structure and fixedly wrapped by the melt-blown fiber filaments and / or wood pulp fiber filaments; the melt-blown fiber filaments, wood pulp fiber filaments and high molecular particles are mixedly woven in the air through an air-laying process to form an integrated composite structure, and the integrated composite structure is deposited to form a single-layer mixedly woven web.

3. The wood pulp composite nonwoven fabric according to claim 2, characterized in that: the high molecular particles are one or a mixture of at least two of high water-absorbing resin particles, thermoplastic elastomer particles, degradable polymer particles, functional additive particles; the functional additive particles comprise at least one of antibacterial agent, deodorant, perfume microcapsule.

4. The wood pulp composite nonwoven fabric according to claim 1 or 2, characterized in that: the melt-blown fiber filaments are one or a mixture of at least two of polyolefin fiber, polyamide fiber, polyurethane fiber.

5. The wood pulp composite nonwoven fabric according to claim 1 or 2, characterized in that: the melt-blown fiber filaments are single-component fiber or double-component melt-blown fiber or a mixture of both; the surface of the double-component melt-blown fiber contains low-melting-point resin.

6. The wood pulp composite nonwoven fabric according to claim 5, wherein: the double-component melt-blown fiber is double-component sheath-core type melt-blown fiber or double-component segmented type melt-blown fiber or double-component side-by-side type melt-blown fiber.

7. The wood pulp composite nonwoven fabric according to claim 1 or 2, characterized in that: the weight percentage of the wood pulp fiber filaments in the total mass of the composite structure is ≥50%.

8. The wood pulp composite nonwoven fabric according to claim 1 or 2, characterized in that: the fiber length of the melt-blown fiber filaments is 5-50 cm.

9. A method of manufacturing a wood pulp composite nonwoven fabric, characterized by: comprise the following steps: Step 1, material preparation; preparation of melt-blown fiber filaments: melt-extruding thermoplastic polymer through a spinneret to form melt-blown fiber filaments, and controlling the melt temperature, hot air temperature and speed to keep the melt-blown fiber filaments with longer fiber length; preparation of wood pulp fiber filaments: defibrating wood pulp fiber board into single wood pulp fiber filaments; Step 2, single-layer air mixing; synchronously conveying the melt-blown fiber filaments and wood pulp fiber filaments through independent air flow channels to the same air flow mixing area; in the air flow mixing area, the melt-blown fiber filaments and wood pulp fiber filaments collide and entangle with each other in the turbulent field to form a single-layer mixed fiber cloud; the melt-blown fiber filaments and wood pulp fiber filaments are entangled to form a web structure in the process of entanglement; Step 3, deposition forming; the single-layer mixed fiber cloud is deposited on the surface of a forming drum under the action of negative pressure suction to form a single-layer mixedly woven web; Step 4, hot melt consolidation; hot rolling the single-layer mixedly woven web to consolidate the melt-blown fiber filaments, melt-blown fiber filaments are hot-melt bonded, and wood pulp fibers are fixed in the web structure to obtain wood pulp composite non-woven fabric.

10. A method of manufacturing a wood pulp composite nonwoven fabric, characterized by: comprise the following steps: Step 1, material preparation; Preparation of melt-blown fiber filaments: melt-extruding thermoplastic polymer, forming melt-blown fiber filaments through a spinneret, controlling the melt temperature, hot air temperature and speed to keep the melt-blown fiber filaments in a long fiber length; Preparation of wood pulp fiber filaments: defibrating wood pulp fiber board into single wood pulp fiber filaments; Preparation of at least one kind of high molecular particles: drying and sieving high molecular particles to a predetermined particle size; Step 2, single-layer air mixing weaving; Synchronously conveying the melt-blown fiber filaments, wood pulp fiber filaments and at least one kind of high molecular particles through independent air flow channels to the same air flow mixing area; In the air flow mixing area, the melt-blown fiber filaments, wood pulp fiber filaments and at least one kind of high molecular particles collide and entangle with each other in a turbulent flow field, forming a single-layer mixed fiber cloud; The melt-blown fiber filaments and wood pulp fiber filaments entangle to form a net structure in the entangling process, while the high molecular particles are fixedly coated; Step 3, deposition molding; The single-layer mixed fiber cloud is deposited on the surface of a roller under the action of negative pressure suction, forming a single-layer mixed fiber web; Step 4, hot melt consolidation; Hot rolling the single-layer mixed fiber web to consolidate it, melt-blown fiber filaments are hot-melt bonded, wood pulp fibers and high molecular particles are fixed in the net structure, and a wood pulp composite non-woven fabric is obtained.

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