Non-woven fabric manufacturing method

Abstract

The invention relates to the technical field of non-woven fabric processing, in particular to a non-woven fabric manufacturing method which comprises the following steps: step 1, preparing chemical fiber raw materials such as polypropylene, polyester, viscose and the like; 2, pretreating the raw materials; 3, carding the pretreated fibers into a single fiber state through a carding mechanism, and laying to form a thin-layer fiber web; 4, reinforcing the formed fiber web, and adding an antibacterial or waterproof coating on the surface of the fiber web as required; and 5, drying and shaping, slitting and winding, and packaging. According to the method, raw materials are pretreated, a formed fiber web is reinforced, an antibacterial coating is added to the surface of the fiber web according to needs, fiber web reinforcement comprises mechanical reinforcement, thermal bonding and chemical bonding, mechanical reinforcement comprises the steps that the fiber web is punctured by a pricking needle to form three-dimensional entangled fibers and high-pressure water flow entangled fibers, finally, the reinforced non-woven fabric is dried and subjected to heat setting, and the antibacterial non-woven fabric is obtained. The method is simple and efficient in process and good in antibacterial effect.

Description

Technical Field

[0001] The present invention relates to the technical field of non-woven fabric processing, in particular to a method for manufacturing non-woven fabric. Background Art

[0002] Non-woven fabrics are made of chemical fibers and plant fibers on a wet or dry papermaking machine with water or air as the suspension medium. Although they are cloths, they are not woven, so they are called non-woven fabrics. Non-woven fabrics are a new generation of environmentally friendly materials with the advantages of good strength, environmental protection, flexibility, non-toxicity, tastelessness, and low price. In medical and health care, non-woven fabrics are used to make surgical gowns, protective clothing, disinfection wraps, masks, medical tapes, etc.

[0003] Currently, most of the existing non-woven fabric manufacturing methods are relatively complicated, and the non-woven fabrics produced do not have antibacterial effects. Summary of the Invention

[0004] (1) Technical problems solved In view of the shortcomings of the existing technology, the present invention provides a method for manufacturing non-woven fabrics, which has the advantages of simple and efficient process, good antibacterial effect, etc., and solves the above problems.

[0005] (2) Technical solution To achieve the above object, the present invention provides the following technical solutions: A method for manufacturing a nonwoven fabric comprises the following steps: Step 1: Prepare chemical fiber raw materials such as polypropylene, polyester, and viscose; Step 2: Pre-treat the raw materials; Step 3: The pretreated fibers are combed into single fibers by a combing mechanism and stacked to form a thin fiber web; Step 4: Reinforce the formed fiber mesh and add an antibacterial or waterproof coating on its surface as needed;

[0006] Step 5: Drying, shaping, slitting, winding and packaging.

[0007] Preferably, in step 2, the fiber clusters are dispersed by an opener to remove impurities and mix different fiber ratios to optimize performance.

[0008] Preferably, the step three also includes wet-laid web formation and spinning web formation, wherein wet-laid web formation: fibers are suspended in water, evenly distributed by water flow and then dehydrated to form a fiber web; spinning web formation: molten polymer is stretched into continuous filaments or ultrafine fibers through spinnerets and directly laid into a web.

[0009] Preferably, the fiber web reinforcement in step four includes mechanical reinforcement, thermal bonding and chemical bonding, wherein mechanical reinforcement includes: needles piercing the fiber web to form three-dimensional entanglement and high-pressure water flow entanglement of fibers; thermal bonding includes using hot rollers or hot air heating to melt and bond the fibers; and chemical bonding includes spraying adhesive on the fiber web and then curing it.

[0010] Preferably, in step five, the reinforced non-woven fabric is dried and heat-set to stabilize its structure, and then cut by a slitting machine, wound and packaged.

[0011] (3) Beneficial effects Compared with the prior art, the present invention provides a method for manufacturing nonwoven fabrics, which has the following beneficial effects: 1. The present invention pre-treats the raw materials, disperses the fiber clumps through an opener, removes impurities, and mixes different fiber ratios to optimize performance. The pre-treated fibers are combed into a single fiber state by a carding mechanism, stacked to form a thin fiber web, and the formed fiber web is reinforced. An antibacterial coating is added to its surface as needed. The fiber web reinforcement includes mechanical reinforcement, thermal bonding, and chemical bonding. Mechanical reinforcement: needles pierce the fiber web to form three-dimensional entanglement and high-pressure water flow entangles the fibers; thermal bonding: hot rollers or hot air heating are used to melt and bond the fibers; chemical bonding: the fiber web is sprayed with adhesive and then solidified. Finally, the reinforced non-woven fabric is dried and heat-set to stabilize its structure. It is cut by a slitting machine and then wound and packaged. This method is simple, efficient, and has a good antibacterial effect.

[0012] 2. The fiber web forming of the present invention also includes wet web forming and spinning web forming. In wet web forming, fibers are suspended in water, evenly distributed by water flow and then dehydrated to form a fiber web; in spinning web forming, molten polymer is stretched through spinneret holes into continuous filaments or ultrafine fibers and directly laid into a web. The selection can be made according to actual needs. DETAILED DESCRIPTION

[0013] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0014] The present invention relates to a method for manufacturing a nonwoven fabric, comprising the following steps: Step 1: Prepare chemical fiber raw materials such as polypropylene, polyester, and viscose fibers, and screen and remove impurities to ensure fiber purity and consistency; Step 2: Pre-treat the raw materials, disperse the fiber clusters through an opener, remove impurities, and mix different fiber ratios to optimize performance; Step three: the pretreated fibers are combed into single fiber state by a carding mechanism to form a thin layer of fiber web; it also includes wet laying and spinning laying, wherein the wet laying: the fibers are uniformly distributed in water by water flow and then dehydrated to form a fiber web; the spinning laying: the molten polymer is stretched into continuous filaments or ultra-fine fibers through a spinneret and directly laid on the web; Step four: the formed fiber web is reinforced, and an antibacterial or waterproof coating is added on the surface as needed; the fiber web reinforcement includes mechanical reinforcement, thermal bonding and chemical bonding, wherein the mechanical reinforcement: the fiber web is punctured by a needle to form three-dimensional entanglement and high-pressure water flow entanglement; the thermal bonding: the fibers are fused and bonded by heating with a hot roller or hot air; the chemical bonding: the fiber web is sprayed with an adhesive and then solidified;

[0015] Step five: drying and setting, slitting and winding, and packaging; the reinforced non-woven fabric is dried and heat set to stabilize its structure, slitted by a slitting machine, wound and packaged, and the drying can be treated by hot air or infrared rays.

[0016] The advantages of the present application are: the raw materials are pretreated, the fiber bundles are dispersed by an opener, impurities are removed, different fiber proportions are mixed to optimize the performance, the pretreated fibers are combed into single fiber state by a carding mechanism to form a thin layer of fiber web, the formed fiber web is reinforced, an antibacterial coating is added on the surface as needed, the fiber web reinforcement includes mechanical reinforcement, thermal bonding and chemical bonding, wherein the mechanical reinforcement: the fiber web is punctured by a needle to form three-dimensional entanglement and high-pressure water flow entanglement; the thermal bonding: the fibers are fused and bonded by heating with a hot roller or hot air; the chemical bonding: the fiber web is sprayed with an adhesive and then solidified, finally the reinforced non-woven fabric is dried and heat set to stabilize its structure, slitted by a slitting machine, wound and packaged, and the method is simple and efficient, and has good antibacterial effect.

[0017] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A method for manufacturing a nonwoven fabric, characterized in that: The following steps are involved: Step 1: Prepare chemical fiber raw materials such as polypropylene, polyester, and viscose; Step 2: Pre-treat the raw materials; Step 3: The pretreated fibers are combed into single fibers by a combing mechanism and stacked to form a thin fiber web; Step 4: Reinforce the formed fiber mesh and add an antibacterial or waterproof coating on its surface as needed; Step 5: Drying, shaping, slitting, winding and packaging.

2. The method for manufacturing a nonwoven fabric according to claim 1, wherein: In the second step, the fiber clusters are dispersed by an opener, impurities are removed, and different fiber ratios are mixed to optimize performance.

3. The method for manufacturing a nonwoven fabric according to claim 1, wherein: The step three also includes wet web forming and spinning web forming, wherein wet web forming is: fibers are suspended in water, evenly distributed by water flow and then dehydrated to form a fiber web; spinning web forming is: molten polymer is stretched into continuous filaments or ultrafine fibers through spinnerets and directly laid into a web.

4. The method for manufacturing a nonwoven fabric according to claim 1, wherein: The fiber web reinforcement in step four includes mechanical reinforcement, thermal bonding and chemical bonding, wherein mechanical reinforcement includes: needles piercing the fiber web to form three-dimensional entanglement and high-pressure water flow entanglement of fibers; thermal bonding includes using hot rollers or hot air heating to melt and bond the fibers; and chemical bonding includes spraying adhesive on the fiber web and then curing it.

5. The method for manufacturing a nonwoven fabric according to claim 1, wherein: In the step five, the reinforced non-woven fabric is dried and heat-set to stabilize its structure, and then cut by a slitting machine, wound and packaged.