CN113652800B - Super-soft bi-component waterproof breathable non-woven fabric and production process thereof - Google Patents

Super-soft bi-component waterproof breathable non-woven fabric and production process thereof Download PDF

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CN113652800B
CN113652800B CN202110949955.1A CN202110949955A CN113652800B CN 113652800 B CN113652800 B CN 113652800B CN 202110949955 A CN202110949955 A CN 202110949955A CN 113652800 B CN113652800 B CN 113652800B
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woven fabric
melt
layer
soft
super
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CN113652800A (en
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朱兵
李月明
董卫军
尤鑫鑫
屈小兵
江建军
徐笔龙
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Zhejiang Guancheng Technology Co ltd
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Zhejiang Guancheng Technology Co ltd
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    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/54—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving
    • D04H1/559—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving the fibres being within layered webs
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/54—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving
    • D04H1/542—Adhesive fibres
    • D04H1/544—Olefin series
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/54—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving
    • D04H1/558—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving in combination with mechanical or physical treatments other than embossing
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/54—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving
    • D04H1/56—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving in association with fibre formation, e.g. immediately following extrusion of staple fibres
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M10/00—Physical treatment of fibres, threads, yarns, fabrics, or fibrous goods made from such materials, e.g. ultrasonic, corona discharge, irradiation, electric currents, or magnetic fields; Physical treatment combined with treatment with chemical compounds or elements
    • D06M10/04—Physical treatment combined with treatment with chemical compounds or elements
    • D06M10/08—Organic compounds
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M14/00—Graft polymerisation of monomers containing carbon-to-carbon unsaturated bonds on to fibres, threads, yarns, fabrics, or fibrous goods made from such materials
    • D06M14/18—Graft polymerisation of monomers containing carbon-to-carbon unsaturated bonds on to fibres, threads, yarns, fabrics, or fibrous goods made from such materials using wave energy or particle radiation
    • D06M14/26—Graft polymerisation of monomers containing carbon-to-carbon unsaturated bonds on to fibres, threads, yarns, fabrics, or fibrous goods made from such materials using wave energy or particle radiation on to materials of synthetic origin
    • D06M14/28—Graft polymerisation of monomers containing carbon-to-carbon unsaturated bonds on to fibres, threads, yarns, fabrics, or fibrous goods made from such materials using wave energy or particle radiation on to materials of synthetic origin of macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
    • Y02P70/62—Manufacturing or production processes characterised by the final manufactured product related technologies for production or treatment of textile or flexible materials or products thereof, including footwear

Abstract

The invention relates to the technical field of spinning, in particular to a super-soft bi-component waterproof breathable non-woven fabric and a production process thereof; the super-soft bi-component waterproof breathable non-woven fabric is composed of an upper PE spun-bonded non-woven fabric layer, a lower PE spun-bonded non-woven fabric layer and an inner PP melt-blown non-woven fabric layer, wherein the outer PE non-woven fabric layer serves as a super-soft breathable layer, and the inner PP non-woven fabric layer serves as a waterproof ultraviolet-resistant sterilization layer. The production flow is as follows: the PP melt-blown non-woven fabric is modified, so that dodecyl trimethyl ammonium chloride and 2-hydroxy-4-methoxybenzophenone-5-sulfonic acid are effectively confined on the PP non-woven fabric. And then the PE spunbonded non-woven fabric bottom layer, the modified PP melt-blown non-woven fabric inner layer and the PE spunbonded non-woven fabric surface layer are subjected to hot rolling compounding, so that the prepared product not only has super-soft touch and excellent waterproof and breathable functions, but also has excellent ultraviolet resistance, anti-aging and slow-release sterilization performance, and the quality of the non-woven fabric is improved while the service life of the non-woven fabric product is prolonged.

Description

Super-soft bi-component waterproof breathable non-woven fabric and production process thereof
Technical Field
The invention relates to the technical field of spinning, in particular to a super-soft bi-component waterproof breathable non-woven fabric and a production process thereof.
Background
Non-woven fabrics, also called non-woven fabrics and non-woven fabrics, are fabrics formed by interweaving or weaving yarns or filaments, and are formed by only forming a fiber web structure by directionally or randomly arranging short fibers or filaments and then reinforcing the fiber web structure by adopting methods such as mechanical reinforcement, thermal bonding or chemical bonding. The process flow of non-woven fabric production can be generally divided into four processes: selecting fibers/raw materials, forming a net, reinforcing (forming) the fibers, and finishing.
Non-woven technology is a material processing technology that originates from, but exceeds, textiles. It combines four flexible material processing technologies of textile, paper making, leather and plastics, and fully combines and applies many modern high and new technologies, such as computer control, high-pressure jet, infrared and laser technologies. The non-woven fabric breaks through the traditional spinning principle and has the characteristics of short process flow, high production rate, high yield, low cost, wide application, multiple raw material sources, multiple process changes, high technical requirements and the like.
Most nonwoven materials are based on a web structure with the fibers in a single layer web structure arranged in two dimensions or in a network geometry arranged in three dimensions. Therefore, the non-woven material has the characteristic of being porous and breathable, but the general non-woven fabric has poor effect although having water repellency. In order to improve the water repellent effect, a melt-blown layer is usually added between two layers of spunbonded fabrics, and then the spunbonded fabrics are subjected to hot rolling bonding, but the non-woven fabrics produced by the method have hard handfeel and poor skin-friendly performance, so that in order to meet the requirements of sanitary products, a small roll point roller is usually adopted for hot rolling bonding, but the prepared non-woven fabrics have poor bonding effect, damage is caused to the melt-blown layer, and the water repellent effect is greatly reduced.
In recent years, with the continuous development of economy, the global environment is increasingly poor, and the emission of a lot of industrial waste gas, waste water, automobile exhaust and the like causes serious damage to the global environment. One of the obvious changes is that the fluorine content in the air is increased, the ozone holes are enlarged, the ultraviolet rays reaching the earth surface are increased, and the ultraviolet rays UV-B (280-320nm) reaching the earth surface are increased. The International Commission on illumination divides ultraviolet into three bands of UV-A (315 + 400nm), UV-B (280 + 315nm) and UV-C (100 + 280 nm). Ultraviolet rays account for about 5% of sunlight, wherein UV-A accounts for a large proportion but causes little damage to a human body, and only causes rough skin and wrinkles, and UV-B accounts for a small proportion but causes great damage to the human body, and is one of the main causes of skin cancer. And the ageing resistance of the PP non-woven fabric can be increased while the ultraviolet resistance of the material is improved, so that the ultraviolet resistance of the non-woven fabric product is increased, the service life of the non-woven fabric product can be greatly prolonged, the performance of the non-woven fabric product can be enriched, and the method has important significance for developing high-function non-woven fabric products.
Antibacterial and antiviral medical supplies such as masks, surgical gowns, protective clothing and the like are all non-woven fabric products. The data show that 878.8 ten thousand tons of various non-woven fabrics are produced in China in 2020, the percentage of spun bond is increased by 35.86 percent, and the percentage of melt blown is increased by 6 percent. In the spunlaid process, the PP spun bond accounts for 59 percent, the melt-blown accounts for 10 percent, and the SMS accounts for 20 percent. The bi-component non-woven fabric is the development direction of the current non-woven technology, and the bi-component non-woven fabric can simultaneously have the excellent characteristics of two components, thereby greatly enriching the service performance of the non-woven fabric and widening the application field of the non-woven fabric. However, most of the non-woven fabric products used in daily life do not have antibacterial and antiviral properties.
Based on the above, the invention provides a super-soft bi-component waterproof breathable non-woven fabric and a production process thereof, which aim to solve the problems.
Disclosure of Invention
The invention aims to provide a super-soft bi-component waterproof breathable non-woven fabric and a production process thereof. In addition, the non-woven fabric produced by the invention has good performances of slow-release sterilization, long-acting ultraviolet resistance and ageing resistance, and the quality of the non-woven fabric product is effectively improved.
In order to achieve the purpose, the invention provides the following technical scheme:
an ultra-soft bi-component waterproof breathable non-woven fabric comprises two PE spun-bonded non-woven fabric layers which are positioned on an outer layer and have soft and breathable functions and a PP melt-blown non-woven fabric layer which is positioned on an inner layer and is subjected to modification treatment.
Furthermore, the modification treatment process of the PP non-woven fabric layer comprises the following steps:
i, dipping an inner PP melt-blown layer serving as a non-woven fabric product into the mixed solution; raising the temperature of the mixed solution to 50-65 ℃, and performing ultrasonic dispersion for 20-30 min at the temperature; after the ultrasonic dispersion is uniform, storing for later use;
II, sequentially adding the pretreated mixed solution, PP non-woven fabric, 30-40% by mass of a modifier, 5-10% by mass of an ultraviolet cross-linking agent and 0.6-0.8% by mass of an initiator into a reaction kettle, injecting nitrogen into the reaction kettle, replacing air in the reaction kettle with the nitrogen, adjusting the pressure in the kettle to 6.8-8.5 MPa, and reacting at the temperature of 75-85 ℃ for 2-4 h under the condition; after the reaction is finished, naturally cooling the temperature in the reaction kettle to room temperature, discharging nitrogen in the kettle, and sealing the mixed liquid with the PP non-woven fabric;
III, pouring the sealed mixed solution with the PP non-woven fabric into reaction equipment, introducing air subjected to drying treatment into the reaction equipment, raising the temperature of the reaction equipment to 65-85 ℃, and carrying out heat preservation reaction for 5-15min under the condition of ultraviolet irradiation; then cooling the reaction system in the reaction equipment to room temperature under the atmosphere of protective gas, taking out the PP non-woven fabric layer from the reaction system, and washing the PP non-woven fabric layer by using an organic solution; and after washing, cleaning the PP non-woven fabric layer by using an ethanol solution, and finally drying to finish the modification treatment of the PP non-woven fabric layer.
Furthermore, in the step I, the bath ratio in the dipping treatment process is 1: 20 to 30.
Further, in the step i, the preparation method of the mixed solution comprises: adding 2.5-3.5% by mass of glyceryl monostearate, 5.0-8.0% by mass of dodecyl trimethyl ammonium chloride and 10-15% by mass of 2-hydroxy-4-methoxybenzophenone-5-sulfonic acid into an ethanol solution with the concentration of 60-70%; and (4) performing ultrasonic dispersion for 10-20 min to obtain a mixed solution finished product.
Furthermore, in the step ii, the modifier is any one of butyl acrylate, succinic anhydride and pentaerythritol triacrylate.
Furthermore, in the step III, the concentration of the ethanol solution is 60-75%, and the washing times are 2-3.
Furthermore, the initiator is any one of ammonium persulfate, benzoyl peroxide or azobisisobutyronitrile, and the dosage of the initiator is 3.2-4.5% of that of the modifier.
Furthermore, the organic solvent is any one of ethanol, acetone or propanol, and the dosage of the organic solvent is 1.6-2.0 times of that of the PP non-woven fabric.
A production process of super-soft bi-component waterproof breathable non-woven fabric comprises the following steps:
s1, heating heat conducting oil to 130-150 ℃, and then respectively unreeling the two PE non-woven fabric layers and the modified PP non-woven fabric layer from top to bottom; after the unreeling is finished; storing and standby;
s2, stacking the three layers of non-woven fabrics of the PP non-woven fabric layer and the PE non-woven fabric layer after the unreeling treatment, simultaneously guiding the three layers of non-woven fabrics into a hot roll of a hot rolling mill, and hot rolling the three layers of non-woven fabrics into an integral structure under the action of heat and the pressure of the hot roll; the obtained product is the finished product of the super-soft bi-component waterproof breathable non-woven fabric;
and S3, coiling the finished product of the super-soft bi-component waterproof breathable non-woven fabric processed in the step S2 into a coil by a coiling machine.
Furthermore, the ultraviolet cross-linking agent is dicyclopentenyl acrylate DCPA.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the invention, the PP melt-blown non-woven fabric subjected to modification treatment of the PE spun-bonded non-woven fabric layer is subjected to hot rolling compounding, the modifier and the ultraviolet cross-linking agent added in the modified PP non-woven fabric layer can enhance the compounding effect of the PP non-woven fabric layer on the outer PE non-woven fabric layer during compounding, and the produced double-component non-woven fabric product not only has super-soft touch, but also has good air permeability of a waterproof agent. Effectively improves the quality of the produced non-woven fabric.
2. The invention is characterized in that PP non-woven fabric is dipped in ethanol solution containing glyceryl monostearate, dodecyl trimethyl ammonium chloride and 2-hydroxy-4-methoxybenzophenone-5-sulfonic acid, ultrasonic dispersion treatment is adopted, ultrasonic waves are transmitted in a mixed liquid medium in a longitudinal wave mode, cavitation nuclei in the medium are alternately compressed and stretched due to the alternate conversion of positive and negative pressure phases of the ultrasonic waves, so that a part of the cavitation nuclei enter a continuous cavitation state, and a part of the cavitation nuclei are completely collapsed, and the dynamic processes of oscillation, growth, contraction, collapse and other periodic reciprocating cyclic changes of the cavitation nuclei are the ultrasonic cavitation effect. Under the cavitation effect, dodecyl trimethyl ammonium chloride and 2-hydroxy-4-methoxybenzophenone-5-sulfonic acid can be fully dispersed and retained in a fiber web structure on the surface of the PP non-woven fabric under the action of glyceryl monostearate. Meanwhile, other small particle impurities in the PP non-woven fabric can be removed by ultrasonic waves, so that the subsequent modifier can better enter the interior of the non-woven fabric fibers to be combined with the fiber web. And then under the action of an initiator and an ultraviolet crosslinking agent, the modifier and the groups on the surface of the PP non-woven fabric are subjected to chemical reaction to form chemical bonds, so that a layer of three-dimensional network structure is formed on the surface of the PP non-woven fabric. Can effectively confine dodecyl trimethyl ammonium chloride and 2-hydroxy-4-methoxybenzophenone-5-sulfonic acid in a three-dimensional network structure formed by the reaction of PP non-woven fabric, modifier and ultraviolet cross-linking agent. The slow-release sterilization performance of the prepared non-woven fabric product is effectively improved, and the ultraviolet resistance and ageing resistance of the non-woven fabric product are also effectively improved and prolonged. The service life of the non-woven fabric product is effectively prolonged, and the quality of the non-woven fabric product is improved.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
In order to achieve the purpose, the invention provides the following technical scheme:
an ultra-soft bi-component waterproof breathable non-woven fabric comprises two PE spun-bonded non-woven fabric layers which are positioned on an outer layer and have soft and breathable functions and a PP melt-blown non-woven fabric layer which is positioned on an inner layer and is subjected to modification treatment.
Furthermore, the modification treatment process of the PP non-woven fabric layer comprises the following steps:
i, dipping an inner PP melt-blown layer serving as a non-woven fabric product into the mixed solution; raising the temperature of the mixed solution to 50 ℃, and performing ultrasonic dispersion for 20min at the temperature; after the ultrasonic dispersion is uniform, storing for later use;
II, sequentially adding the pretreated mixed solution, PP non-woven fabric, 30% of modifier by mass, 5% of DCPA by mass and 0.6% of initiator by mass into a reaction kettle, injecting nitrogen into the reaction kettle, replacing air in the reaction kettle with nitrogen, adjusting the pressure in the kettle to 6.8MPa, and reacting for 4 hours under the condition that the temperature of the reaction kettle is 75; after the reaction is finished, naturally cooling the temperature in the reaction kettle to room temperature, discharging nitrogen in the kettle, and sealing the mixed solution with the PP non-woven fabric;
III, pouring the sealed mixed solution with the PP non-woven fabric into reaction equipment, introducing air subjected to drying treatment into the reaction equipment, raising the temperature of the reaction equipment to 65 ℃, and carrying out heat preservation reaction for 5min under the condition of ultraviolet irradiation; then cooling the reaction system in the reaction equipment to room temperature under the atmosphere of protective gas, taking out the PP non-woven fabric layer from the reaction system, and washing the PP non-woven fabric layer by using an organic solution; and after washing, cleaning the PP non-woven fabric layer by using an ethanol solution, and finally drying to finish the modification treatment of the PP non-woven fabric layer.
Furthermore, in the step I, the bath ratio in the dipping treatment process is 1: 20.
further, in the step i, the preparation method of the mixed solution comprises: adding 2.5% of glyceryl monostearate, 5.0% of dodecyl trimethyl ammonium chloride and 10% of 2-hydroxy-4-methoxybenzophenone-5-sulfonic acid into 60% of ethanol solution; and performing ultrasonic dispersion for 10min to obtain a mixed solution finished product.
Furthermore, in the step ii, the modifier is any one of butyl acrylate, succinic anhydride and pentaerythritol triacrylate.
Further, in the step III, the concentration of the ethanol solution is 60%, and the washing times are 2 times.
Furthermore, the initiator is any one of ammonium persulfate, benzoyl peroxide or azobisisobutyronitrile, and the dosage of the initiator is 3.2 percent of that of the modifier.
Furthermore, the organic solvent is any one of ethanol, acetone or propanol, and the dosage of the organic solvent is 1.6 times of that of the PP non-woven fabric.
A production process of super-soft bi-component waterproof breathable non-woven fabric comprises the following steps:
s1, heating heat conducting oil to 130 ℃, and then respectively unreeling the two PE non-woven fabric layers and the modified PP non-woven fabric layer from top to bottom; after the unreeling is finished; storing and standby;
s2, stacking the three layers of non-woven fabrics of the PP non-woven fabric layer and the PE non-woven fabric layer after the unreeling treatment, simultaneously guiding the three layers of non-woven fabrics into a hot roll of a hot rolling mill, and hot rolling the three layers of non-woven fabrics into an integral structure under the action of heat and the pressure of the hot roll; the obtained product is the finished product of the super-soft bi-component waterproof breathable non-woven fabric;
and S3, winding the finished product of the super-soft bi-component waterproof breathable non-woven fabric processed in the step S2 into a roll by using a winding machine.
Example 2
An ultra-soft bi-component waterproof breathable non-woven fabric comprises two PE spun-bonded non-woven fabric layers which are positioned on an outer layer and have soft and breathable functions and a PP melt-blown non-woven fabric layer which is positioned on an inner layer and is subjected to modification treatment.
The modification treatment process of the PP non-woven fabric layer comprises the following steps:
i, dipping an inner PP melt-blown layer serving as a non-woven fabric product into the mixed solution; raising the temperature of the mixed solution to 60 ℃, and performing ultrasonic dispersion for 25min at the temperature; after the ultrasonic dispersion is uniform, preserving for later use;
II, sequentially adding the pretreated mixed solution, PP non-woven fabric, 35% of modifier by mass, 7.5% of dicyclopentenyl acrylate DCPA by mass and 0.7% of initiator by mass into a reaction kettle, injecting nitrogen into the reaction kettle, replacing air in the reaction kettle with the nitrogen, adjusting the pressure in the kettle to 7.5MPa, and reacting at the temperature of 80 ℃ for 3 hours under the condition; after the reaction is finished, naturally cooling the temperature in the reaction kettle to room temperature, discharging nitrogen in the kettle, and sealing the mixed solution with the PP non-woven fabric;
III, pouring the sealed mixed solution with the PP non-woven fabric into reaction equipment, introducing air subjected to drying treatment into the reaction equipment, raising the temperature of the reaction equipment to 75 ℃, and carrying out heat preservation reaction for 10min under the condition of ultraviolet irradiation; then cooling the reaction system in the reaction equipment to room temperature under the atmosphere of protective gas, taking out the PP non-woven fabric layer from the reaction system, and washing the PP non-woven fabric layer by using an organic solution; and after washing, cleaning the PP non-woven fabric layer by using an ethanol solution, and finally drying to finish the modification treatment of the PP non-woven fabric layer.
Furthermore, in the step I, the bath ratio in the dipping treatment process is 1: 25.
further, in the step i, the preparation method of the mixed solution comprises: adding 3 mass percent of glyceryl monostearate, 6.5 mass percent of dodecyl trimethyl ammonium chloride and 12.5 mass percent of 2-hydroxy-4-methoxybenzophenone-5-sulfonic acid into 65 mass percent of ethanol solution; and (4) performing ultrasonic dispersion for 15min to obtain a mixed solution finished product.
Furthermore, in the step ii, the modifier is any one of butyl acrylate, succinic anhydride and pentaerythritol triacrylate.
Further, in the step III, the concentration of the ethanol solution is 70%, and the washing times are 2 times.
Furthermore, the initiator is any one of ammonium persulfate, benzoyl peroxide or azobisisobutyronitrile, and the dosage of the initiator is 4.0 percent of that of the modifier.
Furthermore, the organic solvent is any one of ethanol, acetone or propanol, and the dosage of the organic solvent is 1.8 times of that of the PP non-woven fabric.
A production process of super soft bi-component waterproof breathable non-woven fabric comprises the following steps:
s1, heating the heat conduction oil to 140 ℃, and then respectively unreeling the two PE non-woven fabric layers and the modified PP non-woven fabric layer from top to bottom; after unreeling is finished; storing and standby;
s2, stacking the three layers of non-woven fabrics of the PP non-woven fabric layer and the PE non-woven fabric layer after the unreeling treatment, simultaneously guiding the three layers of non-woven fabrics into a hot roll of a hot rolling mill, and hot rolling the three layers of non-woven fabrics into an integral structure under the action of heat and the pressure of the hot roll; the obtained product is the finished product of the super-soft bi-component waterproof breathable non-woven fabric;
and S3, winding the finished product of the super-soft bi-component waterproof breathable non-woven fabric processed in the step S2 into a roll by using a winding machine.
Example 3
A super-soft bi-component waterproof breathable non-woven fabric comprises two PE spun-bonded non-woven fabric layers which are positioned on an outer layer and have soft and breathable functions and a PP melt-blown non-woven fabric layer which is positioned on an inner layer and is subjected to modification treatment.
The modification treatment process of the PP non-woven fabric layer comprises the following steps:
i, dipping an inner PP melt-blown layer serving as a non-woven fabric product into the mixed solution; raising the temperature of the mixed solution to 65 ℃, and ultrasonically dispersing for 30min at the temperature; after the ultrasonic dispersion is uniform, storing for later use;
II, sequentially adding the pretreated mixed solution, PP non-woven fabric, 40% of modifier by mass, 10% of DCPA by mass and 0.8% of initiator by mass into a reaction kettle, injecting nitrogen into the reaction kettle, replacing air in the reaction kettle with nitrogen, adjusting the pressure in the reaction kettle to 8.5MPa, and reacting at 85 ℃ for 2 hours under the condition; after the reaction is finished, naturally cooling the temperature in the reaction kettle to room temperature, discharging nitrogen in the kettle, and sealing the mixed solution with the PP non-woven fabric;
III, pouring the sealed mixed solution with the PP non-woven fabric into reaction equipment, introducing air subjected to drying treatment into the reaction equipment, raising the temperature of the reaction equipment to 85 ℃, and carrying out heat preservation reaction for 15min under the condition of ultraviolet irradiation; then cooling the reaction system in the reaction equipment to room temperature under the atmosphere of protective gas, taking out the PP non-woven fabric layer from the reaction system, and washing the PP non-woven fabric layer by using an organic solution; and after washing, cleaning the PP non-woven fabric layer by using an ethanol solution, and finally drying to finish the modification treatment of the PP non-woven fabric layer.
Furthermore, in the step I, the bath ratio in the dipping treatment process is 1: 30.
further, in the step i, the preparation method of the mixed solution comprises: adding 3.5% of glyceryl monostearate, 8.0% of dodecyl trimethyl ammonium chloride and 15% of 2-hydroxy-4-methoxybenzophenone-5-sulfonic acid into 70% of ethanol solution by mass; and performing ultrasonic dispersion for 20min to obtain a mixed solution finished product.
Furthermore, in the step ii, the modifier is any one of butyl acrylate, succinic anhydride and pentaerythritol triacrylate.
Further, in the step III, the concentration of the ethanol solution is 75%, and the washing times are 3 times.
Furthermore, the initiator is any one of ammonium persulfate, benzoyl peroxide or azobisisobutyronitrile, and the dosage of the initiator is 4.5 percent of that of the modifier.
Furthermore, the organic solvent is any one of ethanol, acetone or propanol, and the dosage of the organic solvent is 2.0 times of that of the PP non-woven fabric.
A production process of super-soft bi-component waterproof breathable non-woven fabric comprises the following steps:
s1, heating the heat conduction oil to 150 ℃, and then respectively unreeling the two PE non-woven fabric layers and the modified PP non-woven fabric layer from top to bottom; after the unreeling is finished; storing and standby;
s2, stacking the three layers of non-woven fabrics of the PP non-woven fabric layer and the PE non-woven fabric layer after the unreeling treatment, simultaneously guiding the three layers of non-woven fabrics into a hot roll of a hot rolling mill, and carrying out hot rolling on the three layers of non-woven fabrics into an integral structure under the action of heat and the pressure of the hot roll; the obtained product is the finished product of the super-soft bi-component waterproof breathable non-woven fabric;
and S3, coiling the finished product of the super-soft bi-component waterproof breathable non-woven fabric processed in the step S2 into a coil by a coiling machine.
Comparative example: PP nonwoven fabric produced by certain nonwoven fabric limited, Qingdao, Shandong province.
Performance test
The nonwoven fabrics prepared by examples 1 to 3 of the present invention are referred to as experimental examples 1 to 3; then, the performance of the PP nonwoven fabrics provided in examples 1 to 3 and comparative examples was tested, and each set of test data was recorded in tables 1 and 2:
TABLE 1
Tactile sensation Air permeability (g/m) 2 *d) Water repellency grade/grade
Example 1 Softness ≥1500 5
Example 2 Softness ≥1500 5
Example 3 Softness ≥1500 5
Comparative example Is softer ≥1300 4
Standard of merit —— GB/T 5453-1997 GB/T 14577-93
TABLE 2
Figure BDA0003218303570000131
Figure BDA0003218303570000141
TABLE 3
Figure BDA0003218303570000142
TABLE 4
Figure BDA0003218303570000143
Figure BDA0003218303570000151
As can be seen from the data in tables 1, 2, 3 and 4, the nonwoven fabric produced by the present invention is not only softer to the touch but also superior in air permeability and water resistance. Meanwhile, the breaking strength of the product is slightly reduced, but the elongation at break is greatly increased. In addition, the non-woven fabric produced by the invention has good performances of slow-release sterilization, long-acting ultraviolet resistance and ageing resistance, and the quality of the non-woven fabric product is effectively improved. Therefore, the non-woven fabric product produced by the invention has wider market prospect and is more suitable for popularization.
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims (5)

1. A super soft bi-component waterproof breathable non-woven fabric is characterized in that: comprises two PE spunbonded non-woven fabric layers which are positioned at an outer layer and have soft and breathable functions and a PP meltblown non-woven fabric layer which is positioned at an inner layer and is subjected to modification treatment; the modification treatment process of the PP melt-blown non-woven fabric comprises the following steps:
i, dipping the inner PP melt-blown non-woven fabric serving as a non-woven fabric product into the mixed solution; raising the temperature of the mixed solution to 50-65 ℃, and ultrasonically dispersing for 20-30 min at the temperature; after the ultrasonic dispersion is uniform, storing for later use; the bath ratio in the dipping treatment process is 1: 20-30 parts of; the preparation method of the mixed solution comprises the following steps: adding 2.5-3.5% by mass of glyceryl monostearate, 5.0-8.0% by mass of dodecyl trimethyl ammonium chloride and 10-15% by mass of 2-hydroxy-4-methoxybenzophenone-5-sulfonic acid into an ethanol solution with the concentration of 60-70%; performing ultrasonic dispersion for 10-20 min to obtain a mixed solution finished product;
II, sequentially adding the pretreated mixed solution, PP melt-blown non-woven fabric, 30-40% of modifier by mass, 5-10% of ultraviolet cross-linking agent by mass and 0.6-0.8% of initiator by mass into a reaction kettle, injecting nitrogen into the reaction kettle, replacing air in the reaction kettle with the nitrogen, adjusting the pressure in the kettle to 6.8-8.5 MPa, and reacting at the temperature of 75-85 ℃ for 2-4 hours under the condition; after the reaction is finished, naturally cooling the temperature in the reaction kettle to room temperature, discharging nitrogen in the kettle, and sealing the mixed liquid with the PP melt-blown non-woven fabric; the ultraviolet cross-linking agent is acrylic acid dicyclo pentenyl ester DCPA;
III, pouring the sealed mixed solution with the PP melt-blown non-woven fabric into reaction equipment, introducing air subjected to drying treatment into the reaction equipment, raising the temperature of the reaction equipment to 65-85 ℃, and carrying out heat preservation reaction for 5-15min under the condition of ultraviolet irradiation; then cooling the reaction system in the reaction equipment to room temperature under the atmosphere of protective gas, taking out the PP melt-blown non-woven fabric layer from the reaction system, and washing the PP melt-blown non-woven fabric layer by using an organic solution; and after washing, cleaning the PP melt-blown non-woven fabric by using an ethanol solution, and finally drying to finish the modification treatment of the PP melt-blown non-woven fabric layer.
2. The super soft bi-component waterproof breathable nonwoven fabric according to claim 1, wherein: in the step II, the modifier is any one of butyl acrylate, succinic anhydride and pentaerythritol triacrylate.
3. The super soft bi-component waterproof breathable nonwoven fabric according to claim 1, wherein: in the step III, the concentration of the ethanol solution is 60-75%, and the washing times are 2-3.
4. The super soft bi-component waterproof breathable nonwoven fabric according to claim 1, wherein: the organic solution is any one of ethanol, acetone or propanol, and the dosage of the organic solution is 1.6-2.0 times of that of the PP melt-blown non-woven fabric.
5. A process for producing an ultra-soft bi-component waterproof and breathable non-woven fabric according to any one of claims 1 to 4, comprising the following steps:
s1, heating heat conducting oil to 130-150 ℃, and then respectively unreeling the two PE non-woven fabric layers and the modified PP melt-blown non-woven fabric layer from top to bottom; after unreeling is finished; storing and standby the product;
s2, stacking the unreeled PP melt-blown non-woven fabric layer and the unreeled PE non-woven fabric layer, introducing the three non-woven fabric layers into a hot roll of a hot rolling mill, and hot rolling the three non-woven fabric layers into an integral structure under the action of heat and the pressure of the hot roll; the obtained product is the finished product of the super-soft bi-component waterproof breathable non-woven fabric;
and S3, winding the finished product of the super-soft bi-component waterproof breathable non-woven fabric processed in the step S2 into a roll by using a winding machine.
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