Functional finishing method of spunlace non-woven fabric

Abstract

The invention provides a functional finishing method of spunlace non-woven fabric, and relates to the technical field of non-woven fabric. The method comprises the following specific steps: S1, opening and mixing short fibers for spunlace, uniformly mixing, and carding into two layers of fiber webs, namely a lapping 1 and a lapping 2; s2, the melt-blown cloth is laid in the length direction of the fiber net, composite base cloth is formed, functional particles are sprayed on the composite base cloth, and high-pressure spunlace treatment is conducted after spraying is completed; the process parameters of the spunlace are as follows: the running speed is 10-80 m / min, the number of spunlace heads is 5-9, the spunlace pressure is 0-90 bar, and the aperture of a spunlace is 0.1-0.16 mm; s3, the non-woven fabric subjected to spunlace composite reinforcement is dried, shaped, wound, cut and packaged. The functional finishing method is simple in step, functional particles are directly and physically spread on the cloth cover, the step of preparing complex functional finishing liquid is completely omitted, the technological process is remarkably shortened, and the cost is remarkably reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of non-woven fabrics, in particular to a functional finishing method of spunlace non-woven fabric. BACKGROUND

[0002] Spunlace non-woven fabric is a product with certain strength formed by the displacement, insertion, entanglement and coalescence of fibers in the fiber web under the action of jet flow and drag net curtain rebound generated by high pressure. Spunlace non-woven fabric is widely used in health care, medical treatment, home furnishing and other fields due to its softness, air permeability, good moisture absorption and other characteristics. Melt-blown cloth is a kind of non-woven fabric taking polypropylene (PP) as the main raw material, which is formed by high-temperature melting and high-speed airflow blowing of ultra-fine fibers (fiber diameter 1-5 microns). Its unique capillary structure makes it have high adsorption and high dust capacity, which is 3-5 times that of ordinary non-woven fabric.

[0003] At present, there is a spunlace composite technology to composite spunlace non-woven fabric with polyester, nylon filament and other fibers to obtain spunlace non-woven fabric with smaller pore size and larger dust capacity. Traditional functional finishing technology usually adopts "dipping-pad-drying" or "spraying" process: first, dissolve or disperse functional components (such as antibacterial agents, water repellents, etc.) in water, organic solvents or emulsions to prepare a complex finishing liquid, then immerse the spunlace non-woven fabric into the finishing liquid or make the finishing liquid adhere to the fabric surface by spraying, and finally dry to remove the solvent and make the functional components fixed on the fiber surface. However, the traditional technology has the following defects: 1. Complex finishing liquid preparation: the concentration and dispersibility of functional components need to be accurately controlled, and dispersants, adhesives, pH regulators and other additives need to be added, which increases the raw material cost and process complexity; 2. Affecting the original performance of the base fabric: the solvent or additive in the finishing liquid may cause the softness and air permeability of the spunlace non-woven fabric to decrease, and even cause fiber damage; 3. Complicated process steps: multiple operations such as liquid preparation, dipping / spraying and drying are required, which is low in production efficiency and high in energy consumption. SUMMARY

[0004] In view of this, the present application provides a functional finishing method of spunlace non-woven fabric.

[0005] The technical scheme of the present application is as follows: A functional finishing method of spunlace non-woven fabric, the specific steps comprising: S1, open and mix the spunlace with short fibers, and card the mixed fibers into two layers of fiber web, i.e. laying web 1 and laying web 2; S2, lay the melt-blown cloth along the length direction of the fiber web to form a composite base fabric, sprinkle functional particles on the composite base fabric, and then perform high-pressure spunlace treatment; The water jet process parameters are: running speed 10-80 m / min, water jet head 5-9, water jet pressure 0-90 bar, water needle aperture 0.1-0.16 mm; S3, drying, setting, winding, slitting and packaging the water jet composite reinforced non-woven fabric.

[0006] Further, in step S1, the water jet uses at least one of polyester fiber, viscose fiber or Tencel fiber as the short fiber.

[0007] Further, the specification of the short fiber is 0.6-2.5D, and the length is 25-55 mm.

[0008] Further, in step S1, the total gram weight of the fiber web is 10-60 g / m 2 .

[0009] Further, in step S2, the gram weight of the melt-blown fabric is 8-30 g / m 2 .

[0010] Further, in step S2, the particle size of the functional particles is 100-400 mesh, and the scattering amount is 1-20 g / m 2 .

[0011] The particle size of the functional particles is 100-400 mesh, and the particle size is too small to directly leak down and pollute the water treatment system, and the particle size is too large to be easily grabbed and easily fall off. The upper limit of the particle size (≤400 mesh): a. Mechanical locking ability limit: melt-blown fabric relies on the winding characteristics of ultra-fine fibers to "capture" particles, and when the particle size is too large (such as >400 mesh), the fiber wrapping is insufficient: the diameter of the melt-blown fiber is only 1-5 microns, which cannot effectively wrap the coarse particles. Insufficient water jet energy: high-pressure water needle is difficult to drive large particles to the deep layer of the fiber network. b. Particle shedding risk: large particles only stay on the surface of the base fabric and are not embedded in the fiber cross points, and are easily shed due to mechanical friction during subsequent drying and winding. Lower limit of particle size (>100 mesh): a. Prevent particles from penetrating and losing: particles with a particle size that is too small (such as <100 mesh) are easily penetrated through the composite structure of the melt-blown fabric and the fiber web under the high-pressure impact of the water jet. Although the melt-blown fabric has an ultra-fine fiber network, the pore size is limited. Too small particles will directly leak into the water treatment system, resulting in loss of functional components and reduced product functionality; equipment pollution clogs the water circulation system, increasing maintenance costs. b. Avoid uneven dispersion: nano-sized particles tend to agglomerate and require the addition of a dispersant for uniform scattering, which is contrary to the concept of "chemical aid-free" in the present application.

[0012] In the functional finishing method of the spunlace nonwoven fabric, the functional particles are physically embedded in the fiber network structure by high-pressure water jet process. The final uniformity of distribution and capture efficiency of the particles are not only affected by the particle size, the amount of scattering and the water jet process parameters, but also significantly affected by the particle geometry. Spherical / near-spherical particles have smooth surfaces and small fluid resistance, and are easy to roll or slip under the impact of high-pressure water flow, with strong penetration but easy to escape from the fiber gap. The contact area with the fiber is small, and the mechanical engagement force is weak, so the particles are not easy to be captured. Irregular / abnormal particles have sharp edges and rough surfaces, and are easy to produce buckling effect with the fiber. They are more likely to be embedded in the three-dimensional network structure of the melt-blown fabric under the action of water flow, forming an "anchoring" effect. The contact area with the fiber is large, and the entanglement force is strong, so the particles are more likely to be captured.

[0013] The high-pressure water jet plays a core role in the present application: 1. Driving particle penetration and distribution: strong water jet penetration through the fabric layer, driving part of the surface scattered particles into the internal pores and fiber network of the composite structure; 2. Physical capture and mechanical locking: melt-blown fabric is composed of extremely fine fibers (usually fiber diameter 1-5 microns) randomly stacked, forming a complex three-dimensional network and high-porosity structure, but the pore size is relatively small or irregular compared to the particles. The impact of high-pressure water jet makes the melt-blown fabric and fiber network produce violent movement, flushing and mutual entanglement, and the functional particles are embedded in the melt-blown fiber network and at the fiber intersection points, and are indirectly supported and fixed by the underlying base fabric fibers. The softness and entanglement characteristics of the melt-blown fiber enable it to effectively "capture" and "mechanically engage" the particles, forming a stable bond. 3. Fiber self-knotting and reinforcing: water jet completes the deep entanglement and reinforcement of each fiber layer of the composite structure.

[0014] Further, the functional particles are non-water-soluble or poorly soluble functional particles, including: plant powder particles, inorganic non-metallic oxides, and polymer microspheres.

[0015] Further, the functional particles are non-spherical in shape.

[0016] Further, in step S2, the functional particles can also be sprayed on the melt-blown fabric, and then laid along the length direction of the fiber network to form a composite base fabric, and then subjected to high-pressure water jet treatment.

[0017] Spreading on the surface of the composite base cloth: refers to that after the initial composite structure is formed by sandwiching the melt-blown cloth between the two fiber nets (laying net 1 and laying net 2), the functional particles are sprayed on the outermost layer of the “sandwich” structure. When the functional particles are sprayed onto the surface of the fiber net, part of the particles can be embedded in the gap between the surface fibers to form an initial “anchoring”. After entering the water jet, the high-pressure water needle penetrates the entire composite structure, not only promoting the entanglement and reinforcement of the fibers in each layer, but also pushing the surface particles to migrate to the inside and entering the microporous area of the melt-blown layer with the help of the water flow. In this process, the particles are mechanically clamped, wrapped and locked by the multi-layer fiber network, forming a stable physical embedding structure. Because the fiber net has certain frictional resistance and space accommodation capacity, the particles are not easy to slip or aggregate, and with the dispersion effect of the water jet, a high uniform distribution in the plane and thickness direction can be achieved. This method takes advantage of the good particle capturing ability of the fiber net and the energy transmission characteristics of the water jet process, significantly improving the adhesion stability and functional durability of the functional particles.

[0018] Pre-spraying on the surface of the melt-blown cloth: refers to pre-spraying functional particles on the melt-blown cloth in a separate state, and then laying the melt-blown cloth with particles between two fiber nets for water jet composite. The surface of the melt-blown cloth is smooth and lacks effective anchoring points, and the functional particles are difficult to form stable adhesion on its surface by themselves, and are maintained by only electrostatic force or weak van der Waals force. In the process of combining the melt-blown cloth with functional particles with the fiber net, due to changes in tension, vibration or air flow disturbance, particles are prone to fall off or accumulate locally from the cloth surface, resulting in uneven initial distribution. Although this method is theoretically feasible, the initial adhesion of particles is poor and the migration risk is high in actual operation, ultimately leading to low retention rate, uneven distribution and unstable functional performance, which is not suitable for industrial continuous production.

[0019] Further, in step S3, the drying speed is 10-80 m / min, and the drying temperature is 80-125℃.

[0020] Further, in step S3, the winding speed is 10-80 m / min.

[0021] Compared with the prior art, the present application has the following advantages: 1. The functional finishing method of the present application is simple, and directly spreads functional particles on the cloth surface, completely eliminating the need for complex functional finishing liquid preparation steps (such as dissolution, dispersion, stabilization, viscosity adjustment, pH adjustment, etc.), significantly shortening the process flow and significantly reducing costs; greatly reducing or even eliminating the use of chemical solvents, dispersants, adhesives and other auxiliaries, eliminating the risk of chemical residues, and making the product safer and more environmentally friendly, especially suitable for medical, sanitary, food packaging and other fields.

[0022] 2、The functional particle of the present application has high uniformity of loading, utilizes the ultra-fine, high specific surface area and three-dimensional network structure of the melt-blown layer, combines the forced penetration and dispersion effect of high-pressure water jetting, and ensures the high uniformity of functional particles in the thickness direction and the plane direction of the base cloth, avoiding the surface enrichment, sedimentation or filtration effect in the traditional dipping or coating process. The functional particles are physically embedded between the fibers, with high loading efficiency, and at the same time, the plugging of the pores of the base cloth by a large amount of adhesive or coating film is avoided. The inherent core excellent properties of water-jet non-woven fabric such as bulkiness, softness, water absorption, air permeability and permeability are maximally retained or only slightly weakened.

[0023] 3、The functional finishing method of the present application has high applicability and is suitable for various functional particles, without considering the stability and compatibility of the functional particles in the liquid dispersion system, only needing that the functional particles can withstand the water jetting and subsequent drying conditions, and has wide application range.

[0024] 4、The powdering amount of the functional particles of the present application can be accurately controlled according to the needs, local functional treatment can be easily realized, and the present application can be seamlessly integrated and upgraded with the existing water jetting production line, and has good application prospect.

[0025] 5、The present application finds that the retention rate of non-spherical particles by the composite base cloth is higher through experiments on functional particles with different shapes, and the higher retention rate means a longer effective functional release period, and the present application is especially suitable for application scenarios that need to maintain functionality for a long time.

[0026] 6、The functional finishing method of the present application can be used for the compounding of non-dissolved solid particles with large particle size and non-woven fabric, without using adhesive for fixation, and the present application is a flexible physical fiber wrapping fixation without any addition. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 The present application is a process flow chart.

[0028] Figure 2 The present application is a product structure diagram, wherein 1 is a fiber assembly (fiber web output by a carding machine), 2 is a melt-blown cloth, 3 is a fiber assembly (fiber web output by a carding machine), and 4 is a functional particle. DETAILED DESCRIPTION

[0029] In order to better understand the technical content of the present application, specific examples are provided below to further illustrate the present application.

[0030] The experimental methods used in the embodiments of the present application are conventional methods unless otherwise specified.

[0031] The materials, reagents, etc. used in the embodiments of the present application can be obtained from commercial channels unless otherwise specified.

[0032] Example 1 A functional finishing method of spunlace nonwoven fabric, the specific steps comprising: S1, the spunlace is opened and mixed with viscose fiber (specification 1.5D*40mm), after uniform mixing, it is sent into a carding machine to be carded into two layers of fiber web, respectively, net 1 and net 2, the fiber web weight of net 1 and net 2 is 20 g / m 2 ; S2, melt-blown cloth is laid along the length direction (longitudinal direction) of the fiber web, the weight of the melt-blown cloth is 15 g / m 2 , forming a composite base cloth, using a powder sprayer to uniformly spray the powder particles (irregular shape) of the piper betle leaf (variegated) on the composite base cloth, the particle size is 300 mesh, and the spraying amount is 1 g / m 2 , after completion, high-pressure spunlace treatment is carried out, the process parameters are: running speed 50 m / min, the number of spunlace heads is 7, the spunlace pressure from front to back is 15, 30, 55, 55, 65, 70, 70 bar, and the water needle plate aperture is 0.12 mm; S3, after spunlace composite reinforcement, enter the drying machine for drying and setting, the drying machine is set to 51 m / min, the drying temperature is set to 105℃, after drying, winding is carried out on the winding machine, the speed is 52 m / min, and cutting and packaging are carried out.

[0033] Example 2 A functional finishing method of spunlace nonwoven fabric, the specific steps comprising: S1, the spunlace is opened and mixed with Tencel fiber (specification 0.6D*25mm), after uniform mixing, it is sent into a carding machine to be carded into two layers of fiber web, respectively, net 1 and net 2, the fiber web weight of net 1 and net 2 is 5 g / m 2 ; S2, melt-blown cloth is laid along the length direction (longitudinal direction) of the fiber web, the weight of the melt-blown cloth is 8 g / m 2 , forming a composite base cloth, using a powder sprayer to uniformly spray the powder particles (irregular shape) of the piper betle leaf (variegated) on the composite base cloth, the particle size is 300 mesh, and the spraying amount is 1 g / m 2 , after completion, high-pressure spunlace treatment is carried out, the process parameters are: running speed 75 m / min, the number of spunlace heads is 5, the spunlace pressure from front to back is 20, 35, 45, 50, 60 bar, and the water needle plate aperture is 0.1 mm; S3, after spunlace composite reinforcement, enter the drying machine for drying and setting, the drying machine is set to 77 m / min, the drying temperature is set to 80℃, after drying, winding is carried out on the winding machine, the speed is 80 m / min, and cutting and packaging are carried out.

[0034] Example 3 A functional finishing method of spunlace nonwoven fabric, the specific steps comprising: S1, the spunlace polyester fiber (specification is 2.5D*51mm) is opened and mixed, after being mixed uniformly, is sent to a carding machine to be carded into two fiber nets, respectively, net 1 and net 2, the fiber net weight of net 1 and net 2 is 30g / m 2 ; S2, the melt-blown cloth is laid along the length direction (longitudinal direction) of the fiber net, the weight of the melt-blown cloth is 30g / m2, a composite base cloth is formed, the charcoal powder is uniformly sprayed on the composite base cloth by using a powder sprayer, the particle size is 100 meshes, and the spraying amount is 20g / m 2 , after finishing, high-pressure water jet treatment is carried out, the process parameters are as follows: running speed is 25m / min, the number of water jet heads is 9, the water jet pressure is 25, 50, 65, 70, 85, 90, 90, 75 and 80bar from front to back, and the water needle plate hole diameter is 0.16mm; S3, after water jet composite reinforcement, the product is dried and shaped in a drying machine, the drying machine is set to 27m / min, and the drying temperature is set to 120 DEG C, after drying, the product is wound in a winding machine at a speed of 30m / min, and is cut and packaged.

[0035] Test Example 1 The finished products obtained according to the methods of Examples 1-3 are subjected to performance tests.

[0036] Method: the distribution and approximate quantity of functional particles on the surface of the non-woven fabric are directly observed by using an electron scanning microscope (SEM) or other high-resolution imaging technology; three samples of the same size (2.5*2.5cm) are taken from the finished products, respectively, and are recorded as Example 1a, Example 1b, Example 1c, Example 2a, Example 2b, Example 2c and Example 3a, Example 3b and Example 3c; the samples are placed under a scanning electron microscope for observation and comparison, and the coverage rate of the functional particles is calculated by combining image processing software for comparison.

[0037] The results are shown in Table 1.

[0038] Table 1

[0039] As can be seen from Table 1, the water jet composite fabrics of Examples 1-3 can capture and retain functional particles. Example 2 shows that even under the condition of particle size 400 meshes, the melt-blown cloth can still effectively lock the functional particles. The particle coverage rate of Example 3 is 86.8%, and the particles are uniformly embedded in the three-dimensional network of the melt-blown layer, which shows that the particle coverage rate is higher under high spraying amount.

[0040] Example 4 On the basis of embodiment 1, replace the powder particles (irregular shape) of the leaves of Rauvolfia verticillata (variegated) with polylactic acid PLA microspheres (spherical shape), and the rest is the same as embodiment 1.

[0041] A functional finishing method of a spunlace non-woven fabric, the specific steps comprising: S1, open and mix the spunlace with viscose fibers (specification 1.5D*40mm), after uniform mixing, send to the carding machine for carding into two fiber nets, respectively, as net 1 and net 2, the fiber net weight of net 1 and net 2 is 20 g / m 2 ; S2, lay the melt-blown cloth along the length direction (longitudinal direction) of the fiber net, the weight of the melt-blown cloth is 15 g / m 2 , form a composite base cloth, use a powder sprayer to uniformly spray polylactic acid PLA microspheres (spherical shape) on the composite base cloth, the particle size is 300 mesh, and the spraying amount is 1 g / m 2 , complete, and perform high-pressure spunlace treatment, the process parameters are: running speed 50 m / min, number of spunlace heads 7, spunlace pressure from front to back is 15, 30, 55, 55, 65, 70, 70 bar, water needle plate hole diameter is 0.12 mm; S3, after spunlace composite reinforcement, enter the drying machine for drying and setting, the drying machine is set to 51 m / min, and the drying temperature is set to 105℃, after drying, wind on the winding machine at a speed of 52 m / min, and cut and package.

[0042] Test example 2 The finished product obtained according to the method of embodiment 4 is tested for performance.

[0043] Use an electron scanning microscope (SEM) or other high-resolution imaging technology to directly observe the distribution and approximate number of functional particles on the surface of the non-woven fabric; the products of embodiment 1 and embodiment 4 have the same weight per square meter, and the number of functional particles laid in each square meter is also the same, compare the two, if the number of surface particles is large, it means that the retention rate of functional particles on the sample is high, otherwise it is low; take three samples (2.5*2.5cm) of the same size of the finished product of embodiment 4, respectively, marked as embodiment 4a, embodiment 4b, embodiment 4c, place the samples under the scanning electron microscope for observation and comparison, and calculate the coverage rate of the functional particles by combining with the image processing software.

[0044] The results are shown in Table 2.

[0045] Table 2

[0046] As can be seen from Table 2, the average coverage of Example 4 is 60.2%, which is much lower than the average coverage of Example 1 of 80.8%, indicating that the spherical particles have a high loss rate, while the shaped particles used in Example 1 are more easily "trapped" by the fiber network during the hydroentanglement process and are not easily penetrated and lost with the water flow. Higher retention rate means longer effective functional release period, especially suitable for application scenarios that require long-term maintenance of functionality.

[0047] Example 5 A functional finishing method of a hydroentangled non-woven fabric, the specific steps comprising: S1, open and mix the hydroentangled viscose fibers (specification 1.5D*40mm), after uniform mixing, send to the carding machine for carding into two fiber nets, respectively, as net 1 and net 2, the fiber net weight of net 1 and net 2 is 20 g / m 2 ; S2, use a powder sprayer to uniformly spray the patchouli leaf (variegated) powder particles (shaped) on the melt-blown cloth, the weight of the melt-blown cloth is 15 g / m 2 , the particle size of the powder particles is 300 mesh, the spreading amount is 1 g / m 2 , after spraying, lay the melt-blown cloth along the length direction (longitudinal direction) of the fiber net to form a composite base cloth, and perform high-pressure hydroentanglement treatment, the process parameters are: running speed 50 m / min, hydroentanglement pressure from front to back is 15, 30, 55, 55, 65, 70, 70 bar, water needle plate hole diameter is 0.12 mm; S3, after hydroentanglement and reinforcement, enter the drying machine for drying and setting, the drying machine is set to a speed of 51 m / min and a drying temperature of 105℃, after drying, wind on the winding machine at a speed of 52 m / min, and cut and package.

[0048] Test Example 3 The finished product obtained according to the method of Example 5 is tested for performance.

[0049] Use an electron scanning microscope (SEM) or other high-resolution imaging technology to directly observe the distribution and approximate number of functional particles on the surface of the non-woven fabric; the products of Example 1 and Example 5 have the same weight per square meter, and the number of functional particles spread per square meter is also the same, compare the two, if the number of surface particles is large, it means that the retention rate of functional particles on the sample is high, otherwise it is low; take three samples (2.5*2.5cm) of the finished product of Example 5, respectively, as Example 5a, Example 5b, and Example 5c, place the samples under the scanning electron microscope for observation and comparison, and calculate the coverage of functional particles by combining with image processing software.

[0050] The results are shown in Table 3.

[0051] Table 3

[0052] As can be seen from Table 3, after the surface of the composite base cloth is formed, the functional particles are sprayed, the three-dimensional structure of the web can be fully utilized to preliminarily fix the particles, and in the subsequent hydroentanglement process, the high-pressure water flow cooperates with the fiber movement to deeply embed and uniformly disperse the particles, achieving efficient locking. Pre-spraying on the melt-blown cloth causes the particles to easily slip and fall off due to the lack of supporting structure, severely affecting the functional consistency and practicality of the final product.

[0053] Comparative Example 1 The difference from Example 1 is that only fiber web is used for hydroentanglement without using melt-blown cloth during web laying, and other aspects are consistent with Example 1.

[0054] The functional finishing method of the hydroentangled non-woven fabric of the basic comparative example includes the following specific steps: S1, the viscose fibers (specification 1.5D*40mm) for hydroentanglement are opened and mixed, after uniform mixing, they are sent to a carding machine for carding into a fiber web, and the fiber web has a weight of 25g / m 2 ; S2, the fiber web is uniformly sprayed with melaleuca alternifolia (variegated) powder particles (irregular shape) using a powder sprayer, the particle size is 300 mesh, and the spraying amount is 1g / m 2 , and then high-pressure hydroentanglement treatment is performed, the process parameters are as follows: running speed 50m / min, hydroentanglement pressure from front to back is 15, 30, 55, 55, 65, 70, 70bar, and the water needle plate hole diameter is 0.12mm; S3, after hydroentanglement and reinforcement, the product is dried and shaped in a drying machine, the drying machine is set to a speed of 51m / min and a drying temperature of 105℃, and then the product is wound in a winding machine at a speed of 52m / min, and then cut and packaged.

[0055] Test Example 4 The finished product obtained by the method of Comparative Example 1 is tested for performance.

[0056] Method: Use an electron scanning microscope (SEM) or other high-resolution imaging technology to directly observe the distribution and approximate number of functional particles on the surface of the non-woven fabric; the products of Example 1 and Comparative Example 1 have the same weight per square meter, and the same number of melaleuca alternifolia (variegated) powder particles per square meter are also sprayed, the two are compared, if the number of surface particles is large, it means that the retention rate of functional particles on the sample is high, otherwise it is low; take three samples (2.5*2.5cm) of the same size from the finished product of Comparative Example 1, and mark them as Comparative Example 1a, Comparative Example 1b, and Comparative Example 1c, respectively, and place the samples under a scanning electron microscope for observation and comparison, and calculate the coverage rate of functional particles by using image processing software for comparison.

[0057] The results are shown in Table 4.

[0058] Table 4

[0059] As can be seen from Table 4, the particle coverage of Comparative Example 1 is reduced because the structure does not have a melt-blown cloth as a support, the pore size and porosity of the spunlace cloth are changed, and the ability to "capture" and "carry" functional particles is reduced.

[0060] Figure 1 The process flow chart of the present application is shown in Figure 1, which comprises opening and mixing, carding, laying, multi-component spunlace compounding, drying and setting, winding, slitting and packaging. Figure 2 The structure of the finished product of the present application is shown in Figure 2, wherein 1 is a fiber assembly (fiber web output by a carding machine), 2 is a melt-blown cloth, 3 is a fiber assembly (fiber web output by a carding machine), and 4 is a functional particle.

[0061] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A functional finishing method of a spunlace nonwoven fabric, characterized by, The specific steps include: S1, open and mix the spunlace short fibers, evenly mix and card into two layers of fiber web, i.e. laying 1 and laying 2; S2, lay the melt-blown cloth along the length direction of the fiber web to form a composite base cloth, spray functional particles on the composite base cloth, complete, and perform high-pressure spunlace treatment; The process parameters of the spunlace are: running speed 10-80 m / min, spunlace head 5-9, spunlace pressure 0-90 bar, and water needle aperture 0.1-0.16 mm; S3, dry, set, wind, cut, and package the spunlace composite reinforced non-woven fabric.

2. The functional finishing method of a hydroentangled nonwoven fabric according to claim 1, characterized by, In step S1, the spunlace short fibers are at least one of polyester fibers, viscose fibers, or Tencel fibers.

3. The functional finishing method of a hydroentangled nonwoven fabric according to claim 2, characterized in that, The specifications of the short fibers are 0.6-2.5D and the length is 25-55 mm.

4. The functional finishing method of a hydroentangled nonwoven fabric according to claim 1, characterized in that, In step S1, the total basis weight of the fiber web is 10-60 g / m 2 .

5. The functional finishing method of a hydroentangled nonwoven fabric according to claim 1, characterized in that, In step S2, the melt-blown cloth has a grammage of 8-30 g / m 2 .

6. The functional finishing method of a hydroentangled nonwoven fabric according to claim 1, characterized in that, In step S2, the functional particles have a particle size of 100-400 mesh and a spreading amount of 1-20 g / m 2 .

7. The functional finishing method of a hydroentangled nonwoven fabric according to claim 6, characterized by, The functional particles are non-water-soluble or difficult-to-dissolve functional particles, including: plant powder particles, inorganic non-metallic oxides, and polymer microspheres.

8. The functional finishing method of a hydroentangled nonwoven fabric according to claim 6, characterized by, The shape of the functional particles is non-spherical.

9. The functional finishing method of a hydroentangled nonwoven fabric according to claim 1, characterized in that, In step S3, the drying speed is 10-80 m / min and the drying temperature is 80-125℃.

10. The functional finishing method of a hydroentangled nonwoven fabric according to claim 1, characterized by, In step S3, the winding speed is 10-80 m / min.

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