CN111716856A - High-toughness medical coating non-woven fabric and preparation method thereof - Google Patents

High-toughness medical coating non-woven fabric and preparation method thereof Download PDF

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Publication number
CN111716856A
CN111716856A CN202010626131.6A CN202010626131A CN111716856A CN 111716856 A CN111716856 A CN 111716856A CN 202010626131 A CN202010626131 A CN 202010626131A CN 111716856 A CN111716856 A CN 111716856A
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acid
layer
woven fabric
melt
plasma
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刘倩
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Individual
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B32B5/022—Non-woven fabric
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/06—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the heating method
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/08—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the cooling method
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/10—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/14—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers
    • B32B37/24—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with at least one layer not being coherent before laminating, e.g. made up from granular material sprinkled onto a substrate
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B38/00—Ancillary operations in connection with laminating processes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B38/00—Ancillary operations in connection with laminating processes
    • B32B38/0008—Electrical discharge treatment, e.g. corona, plasma treatment; wave energy or particle radiation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
    • B32B5/24—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
    • B32B5/26—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/14—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers
    • B32B37/24—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with at least one layer not being coherent before laminating, e.g. made up from granular material sprinkled onto a substrate
    • B32B2037/243—Coating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2255/00—Coating on the layer surface
    • B32B2255/02—Coating on the layer surface on fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2255/00—Coating on the layer surface
    • B32B2255/26—Polymeric coating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/02—Synthetic macromolecular fibres
    • B32B2262/0253—Polyolefin fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/10—Inorganic fibres
    • B32B2262/106—Carbon fibres, e.g. graphite fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/51—Elastic
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/558—Impact strength, toughness
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2535/00—Medical equipment, e.g. bandage, prostheses, catheter

Abstract

The invention relates to a high-toughness medical coating non-woven fabric, which comprises a middle layer, an upper surface layer and a lower surface layer, wherein the upper surface layer and the lower surface layer are respectively positioned at two sides of the middle layer; the upper surface layer is a spraying layer containing thermoplastic foaming particles; the lower surface layer is an SMS fiber layer containing reticular carbon fibers. The non-woven fabric prepared by the invention has super toughness.

Description

High-toughness medical coating non-woven fabric and preparation method thereof
Technical Field
The invention relates to a medical non-woven fabric, in particular to a high-toughness medical coating non-woven fabric and a preparation method thereof.
Background
Non-woven fabrics (the name of English is Non Wowen), also called Non-woven fabrics, are made of directional or random fibers, and have the characteristics of moisture resistance, air permeability, flexibility, light weight, no combustion supporting, no toxicity or irritation, rich colors, low price, recycling and the like. For example, the polypropylene fiber is produced by adopting polypropylene granules as raw materials through a continuous one-step method of high-temperature melting, spinning, laying a line and hot-pressing coiling. It is called a nonwoven fabric because of its appearance and certain properties of a fabric.
The non-woven fabric is widely applied to the industries of artificial leather, furniture, chemical industry, printing, decoration, packaging, automobiles, building material service, working condition geotextile, industrial filter cloth oil absorption cloth, travel products, living goods and the like. However, the toughness of the traditional medical non-woven fabric is low, and the requirement of medical use cannot be met.
Disclosure of Invention
In order to solve the technical problems, the invention aims to provide a high-toughness medical coating non-woven fabric and a preparation method thereof.
The technical scheme of the invention is as follows:
the utility model provides a medical coating non-woven fabrics of high tenacity, includes the intermediate level and is located the upper surface layer and the lower surface layer of intermediate level both sides respectively which characterized in that:
the middle layer is formed by processing and applying acid on the surface of the base material through a plasma space to form a wool fiber surface;
the upper surface layer is a spraying layer containing thermoplastic foaming particles;
the lower surface layer is an SMS fiber layer containing reticular carbon fibers.
Further, the plasma space is a space region which is discharged by burning plasma and is arranged in a fine crushing mode, the acid is sprayed into the plasma space in a mist shape, and the base material passes through the plasma space at a constant speed.
Further, the acid is at least one of carboxylic acid, sulfonic acid and phosphoric acid.
Further, the carboxylic acid includes at least one selected from acrylic acid, methacrylic acid, fumaric acid, maleic acid, citraconic acid, and cinnamic acid.
Further, the base material is any one of melt-blown non-woven fabric, staple fiber hot-rolled non-woven fabric and wet-process non-woven material.
A preparation method of a high-toughness medical coating non-woven fabric is characterized by comprising the following steps:
s1, performing surface treatment application on the base material through a plasma space by using acid to enable the base material to have surface wool fibers;
s2, mixing and stirring the thermoplastic foaming particles and the glue according to a certain proportion, putting the mixture into melt-blowing equipment, and spraying the mixture onto the upper surface of the product obtained in the step S1 through the melt-blowing equipment;
s3, spraying a layer of reticular carbon fiber on the inner surface and the outer surface of the SMS fiber layer through melt-blowing equipment, and then spraying a layer of SMS fiber layer on the outer sides of the upper reticular carbon fiber layer and the lower reticular carbon fiber layer;
s4, printing the product obtained in the step S3 on the lower surface of the product obtained in the step S1 by adopting a laminating process, laminating for 3-5min at the temperature of 60-75 ℃, then heating to 80-95 ℃ and laminating for 1-2min, wherein the temperature rising and falling speed is 10 ℃/1min, and cooling to obtain the medical non-woven fabric.
Further, the step S1 is specifically:
s11, combusting plasma in the plasma generator to discharge to form a plasma space in the plasma generator under the inert gas environment;
s12, continuously spraying atomized acid liquor into the plasma space, wherein the atomized acid liquor is formed after ultrasonic oscillation;
and S13, enabling the base material to pass through at a constant speed in a direction parallel to the spraying direction of the mist acid liquid.
Further, the step S2 is specifically:
s21, dispersing and cutting the thermoplastic foaming particles into fine particles, adding the fine particles and glue into a stirring kettle according to the volume ratio of 1:1, and stirring for 60-100 min at the rotation speed of 2000-6000;
s22, transferring the product obtained in the step S21 into a container, and keeping the temperature at 180 ℃ and 250 ℃ to ensure that the product is in a hot melting state;
s23, transferring the product of the step S22 into a melt-blowing device under the condition of heat preservation, and then melt-blowing the product of the step S1 to the upper surface.
Further, in the step S22, the thickness of the melt-blown to the upper surface of the product of the step S1 is 0.1-0.2 mm.
Further, the inert gas is any one of helium and argon.
By the scheme, the invention at least has the following advantages:
utilize acid to exert at basic unit's material surface treatment through the plasma space and make it have surface wool fibre, can make the positive and negative square two sides of basic unit's material have the fibrous effect of wool, when with other two sides interconnect, the fibrous existence of wool can increase and decrease the two sides power of combining each other for it is inseparabler with the material after the basic unit material combines, the fibrous existence of wool makes basic unit's material have elastic ability more simultaneously, has increased toughness. Through having sprayed thermoplasticity foaming particle spraying layer on basic unit's material surface, the toughness of non-woven fabrics has further been increased, because thermoplasticity foaming particle itself possesses superstrong elasticity, behind the coating through spraying equipment spraying formation foaming particle, the invoice particle can combine each other with basic unit's hair fibre, the foaming particle coating is densely covered on the fibrous surface of hair, not only can cover the fibrous toughness that can also further increase hair completely of hair fibre, also prevented the fibrous fracture of hair simultaneously when tensile basic unit's material. After the SMS fiber layer of the reticular carbon fiber is printed, the internal reticular carbon fiber and the SMS fiber layer are combined in a plurality of layers, the mechanical property of the SMS fiber layer can be improved, and after the SMS fiber layer is combined with the base material, the tensile rate of the base material can be improved to more than 10%.
The foregoing is a summary of the present invention, and in order to provide a clear understanding of the technical means of the present invention and to be implemented in accordance with the present specification, the following is a detailed description of the preferred embodiments of the present invention.
Detailed Description
The following examples are given to further illustrate the embodiments of the present invention. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
A high-toughness medical coating non-woven fabric comprises a middle layer, an upper surface layer and a lower surface layer which are respectively positioned at two sides of the middle layer,
the middle layer is formed by processing and applying acid on the surface of the base material through a plasma space to form a wool fiber surface; specifically, the plasma space is a space area which is discharged by burning plasma and is arranged in a fine crushing mode, acid is sprayed into the plasma space in a mist mode, and the base material passes through the plasma space at a constant speed. The acid is at least one of carboxylic acid, sulfonic acid and phosphoric acid. The carboxylic acid includes at least one selected from acrylic acid, methacrylic acid, fumaric acid, maleic acid, citraconic acid, and cinnamic acid. The base material is any one of melt-blown non-woven fabric, short fiber hot-rolled non-woven fabric and wet non-woven material.
The upper surface layer is a spraying layer containing thermoplastic foaming particles;
the lower surface layer is an SMS fiber layer containing reticular carbon fibers.
A preparation method of a high-toughness medical coating non-woven fabric comprises the following steps:
s1, performing surface treatment application on the base material through a plasma space by using acid to enable the base material to have surface wool fibers;
the method specifically comprises the following steps:
s11, combusting plasma in the plasma generator to discharge to form a plasma space in the plasma generator under the inert gas environment;
s12, continuously spraying atomized acid liquor into the plasma space, wherein the atomized acid liquor is formed after ultrasonic oscillation;
and S13, enabling the base material to pass through at a constant speed in a direction parallel to the spraying direction of the mist acid liquid.
S2, mixing and stirring the thermoplastic foaming particles and the glue according to a certain proportion, putting the mixture into melt-blowing equipment, and spraying the mixture onto the upper surface of the product obtained in the step S1 through the melt-blowing equipment;
the method specifically comprises the following steps:
s21, dispersing and cutting the thermoplastic foaming particles into fine particles, adding the fine particles and glue into a stirring kettle according to the volume ratio of 1:1, and stirring for 60-100 min at the rotation speed of 2000-6000;
s22, transferring the product obtained in the step S21 into a container, and keeping the temperature at 180 ℃ and 250 ℃ to ensure that the product is in a hot melting state; in step S22, the thickness of the post-meltblown onto the upper surface of the product of step S1 was 0.1-0.2 mm.
S23, transferring the product of the step S22 into a melt-blowing device under the condition of heat preservation, and then melt-blowing the product of the step S1 to the upper surface.
S3, spraying a layer of reticular carbon fiber on the inner surface and the outer surface of the SMS fiber layer through melt-blowing equipment, and then spraying a layer of SMS fiber layer on the outer sides of the upper reticular carbon fiber layer and the lower reticular carbon fiber layer;
s4, printing the product obtained in the step S3 on the lower surface of the product obtained in the step S1 by adopting a laminating process, laminating for 3-5min at the temperature of 60-75 ℃, then heating to 80-95 ℃ and laminating for 1-2min, wherein the temperature rising and falling speed is 10 ℃/1min, and cooling to obtain the medical non-woven fabric.
The inert gas is any one of helium and argon.
The invention has the following advantages:
utilize acid to exert at basic unit's material surface treatment through the plasma space and make it have surface wool fibre, can make the positive and negative square two sides of basic unit's material have the fibrous effect of wool, when with other two sides interconnect, the fibrous existence of wool can increase and decrease the two sides power of combining each other for it is inseparabler with the material after the basic unit material combines, the fibrous existence of wool makes basic unit's material have elastic ability more simultaneously, has increased toughness. Through having sprayed thermoplasticity foaming particle spraying layer on basic unit's material surface, the toughness of non-woven fabrics has further been increased, because thermoplasticity foaming particle itself possesses superstrong elasticity, behind the coating through spraying equipment spraying formation foaming particle, the invoice particle can combine each other with basic unit's hair fibre, the foaming particle coating is densely covered on the fibrous surface of hair, not only can cover the fibrous toughness that can also further increase hair completely of hair fibre, also prevented the fibrous fracture of hair simultaneously when tensile basic unit's material. After the SMS fiber layer of the reticular carbon fiber is printed, the internal reticular carbon fiber and the SMS fiber layer are combined in a plurality of layers, the mechanical property of the SMS fiber layer can be improved, and after the SMS fiber layer is combined with the base material, the tensile rate of the base material can be improved to more than 10%.
Example 1
Plasma is combusted and discharged inside the plasma generator to form a plasma space in a helium gas environment, specifically, the ultra-frequency plasma generator is placed in the helium gas space, the plasma generator is started to form the plasma space in front of the ultra-frequency plasma generator, and the plasma space has ionization performance. Continuously spraying atomized acid liquid into the plasma space, forming atomized acrylic acid after ultrasonic oscillation, specifically placing the acrylic acid into an ultrasonic vibrator, adjusting the frequency of the ultrasonic vibrator to 110000hz, so that the acid liquid forms oscillated acid mist, and the oscillated acid mist is distributed in the plasma space. The melt-blown non-woven fabric is clamped by the conveying device, and the melt-blown non-woven fabric passes through at a constant speed in a direction parallel to the spraying direction of the mist acid liquor. The thermoplastic foaming particles are dispersed and cut into fine particles, and the thermoplastic foaming particles are placed into a high-speed dispersing machine for dispersing when being cut, so that the diameter of the particles is 0.1 mm. Adding the dispersed particles and waterborne polyurethane into a stirring kettle according to the volume ratio of 1:1, and stirring for 60min at 2000 revolutions; transferring the formed product into a container, and keeping the temperature at 180 ℃ to enable the product to be in a hot melting state; the product was transferred to a melt-blowing apparatus with heat insulation and then melt-blown to a thickness of 0.1mm on the upper surface of the melt-blown nonwoven fabric. Spraying a layer of reticular carbon fiber on the inner surface and the outer surface of the SMS fiber layer through melt-blowing equipment, and then spraying a layer of SMS fiber layer on the outer sides of the upper reticular carbon fiber layer and the lower reticular carbon fiber layer; and (3) printing the printed product on the lower surface of the melt-blown non-woven fabric product by adopting a lamination process, firstly laminating for 3min at the temperature of 60 ℃, then heating to 80 ℃ and laminating for 1min at the temperature rising and falling speed of 10 ℃/1min, and cooling to obtain the medical non-woven fabric.
Example 2
Plasma is combusted and discharged inside the plasma generator to form a plasma space in a helium gas environment, specifically, the ultra-frequency plasma generator is placed in the helium gas space, the plasma generator is started to form the plasma space in front of the ultra-frequency plasma generator, and the plasma space has ionization performance. Continuously spraying vaporous phosphoric acid into the plasma space, forming the vaporous phosphoric acid after ultrasonic oscillation, specifically placing the phosphoric acid into an ultrasonic vibrator, adjusting the frequency of the ultrasonic vibrator to 110000hz, so that acid liquor forms oscillated acid mist, and the oscillated acid mist is distributed in the plasma space. And clamping the short fiber hot-rolled non-woven fabric through a conveying device, and enabling the short fiber hot-rolled non-woven fabric to pass through at a constant speed in a direction parallel to the spraying direction of the mist acid liquor. The thermoplastic foaming particles are dispersed and cut into fine particles, and the thermoplastic foaming particles are placed into a high-speed dispersing machine for dispersing when being cut, so that the diameter of the particles is 0.2 mm. Adding the dispersed particles and waterborne polyurethane into a stirring kettle according to the volume ratio of 1:1, and stirring for 80min at the revolution of 4000; transferring the formed product into a container, and keeping the temperature at 200 ℃ to enable the product to be in a hot melting state; the product was transferred to a melt-blowing apparatus while maintaining the temperature, and then melt-blown to a thickness of 0.15mm on the upper surface of the staple fiber hot-rolled nonwoven fabric. Spraying a layer of reticular carbon fiber on the inner surface and the outer surface of the SMS fiber layer through melt-blowing equipment, and then spraying a layer of SMS fiber layer on the outer sides of the upper reticular carbon fiber layer and the lower reticular carbon fiber layer; and (3) stamping the stamped product on the lower surface of the short fiber hot-rolled non-woven fabric product by adopting a lamination process, firstly laminating for 4min at the temperature of 65 ℃, then heating to 85 ℃ and laminating for 1.5min, wherein the temperature rising and falling speed is 10 ℃/1min, and cooling to obtain the medical non-woven fabric.
Example 3
Plasma is combusted through a plasma generator in the argon gas environment to discharge to form a plasma space, specifically, the ultra-frequency plasma generator is placed in a helium gas space, the plasma generator is started to form the plasma space in front of the ultra-frequency plasma generator, and the plasma space has ionization performance. Continuously spraying vaporous fumaric acid into the plasma space, ultrasonically vibrating the vaporous fumaric acid to form the vaporous fumaric acid, specifically placing the fumaric acid into an ultrasonic vibrator, and adjusting the frequency of the ultrasonic vibrator to 110000hz, so that the acid solution forms vibrated acid mist, and the vibrated acid mist is distributed in the plasma space. And clamping the short fiber hot-rolled non-woven fabric through a conveying device, and enabling the short fiber hot-rolled non-woven fabric to pass through at a constant speed in a direction parallel to the spraying direction of the mist acid liquor. The thermoplastic foaming particles are dispersed and cut into fine particles, and the thermoplastic foaming particles are placed into a high-speed dispersing machine for dispersing when being cut, so that the diameter of the particles is 0.3 mm. Adding the dispersed particles and waterborne polyurethane into a stirring kettle according to the volume ratio of 1:1, and stirring for 100min at the rotation speed of 6000; transferring the formed product into a container, and keeping the temperature at 50 ℃ to enable the product to be in a hot melting state; the product was transferred to a melt-blowing apparatus while maintaining the temperature, and then melt-blown to a thickness of 0.2mm on the upper surface of the staple fiber hot-rolled nonwoven fabric. Spraying a layer of reticular carbon fiber on the inner surface and the outer surface of the SMS fiber layer through melt-blowing equipment, and then spraying a layer of SMS fiber layer on the outer sides of the upper reticular carbon fiber layer and the lower reticular carbon fiber layer; and (3) stamping the stamped product on the lower surface of the short fiber hot-rolled non-woven fabric product by adopting a laminating process, firstly laminating for 5min at the temperature of 75 ℃, then heating to 95 ℃ and laminating for 2min at the temperature rising and falling speed of 10 ℃/1min, and cooling to obtain the medical non-woven fabric.
Example 4
Plasma is combusted through a plasma generator in the argon gas environment to discharge to form a plasma space, specifically, the ultra-frequency plasma generator is placed in a helium gas space, the plasma generator is started to form the plasma space in front of the ultra-frequency plasma generator, and the plasma space has ionization performance. Continuously spraying vaporous fumaric acid into the plasma space, ultrasonically vibrating the vaporous fumaric acid to form the vaporous fumaric acid, specifically placing the fumaric acid into an ultrasonic vibrator, and adjusting the frequency of the ultrasonic vibrator to 110000hz, so that the acid solution forms vibrated acid mist, and the vibrated acid mist is distributed in the plasma space. And clamping the wet-process non-woven material by using a conveying device, and enabling the wet-process non-woven material to pass through at a constant speed in a direction parallel to the spraying direction of the mist acid liquor. The thermoplastic foaming particles are dispersed and cut into fine particles, and the thermoplastic foaming particles are placed into a high-speed dispersing machine for dispersing when being cut, so that the diameter of the particles is 0.3 mm. Adding the dispersed particles and waterborne polyurethane into a stirring kettle according to the volume ratio of 1:1, and stirring for 100min at the rotation speed of 6000; transferring the formed product into a container, and keeping the temperature at 50 ℃ to enable the product to be in a hot melting state; the product was insulation transferred to a melt blowing apparatus and then melt blown to a thickness of 0.2mm on the upper surface of the wet laid nonwoven. Spraying a layer of reticular carbon fiber on the inner surface and the outer surface of the SMS fiber layer through melt-blowing equipment, and then spraying a layer of SMS fiber layer on the outer sides of the upper reticular carbon fiber layer and the lower reticular carbon fiber layer; and (3) stamping the stamped product on the lower surface of the wet-process non-woven material product by adopting a laminating process, firstly laminating for 5min at the temperature of 75 ℃, then heating to 95 ℃ and laminating for 2min at the temperature rising and falling speed of 10 ℃/1min, and cooling to obtain the medical non-woven fabric.
Example 5
Plasma is combusted and discharged inside the plasma generator to form a plasma space in a helium gas environment, specifically, the ultra-frequency plasma generator is placed in the helium gas space, the plasma generator is started to form the plasma space in front of the ultra-frequency plasma generator, and the plasma space has ionization performance. Continuously spraying vaporous phosphoric acid into the plasma space, forming the vaporous phosphoric acid after ultrasonic oscillation, specifically placing the phosphoric acid into an ultrasonic vibrator, adjusting the frequency of the ultrasonic vibrator to 110000hz, so that acid liquor forms oscillated acid mist, and the oscillated acid mist is distributed in the plasma space. The melt-blown non-woven fabric is clamped by the conveying device, and the melt-blown non-woven fabric passes through at a constant speed in a direction parallel to the spraying direction of the mist acid liquor. The thermoplastic foaming particles are dispersed and cut into fine particles, and the thermoplastic foaming particles are placed into a high-speed dispersing machine for dispersing when being cut, so that the diameter of the particles is 0.2 mm. Adding the dispersed particles and waterborne polyurethane into a stirring kettle according to the volume ratio of 1:1, and stirring for 80min at the revolution of 4000; transferring the formed product into a container, and keeping the temperature at 200 ℃ to enable the product to be in a hot melting state; the product was transferred to a melt blowing apparatus with heat insulation and then melt blown to a thickness of 0.15mm on the upper surface of the melt blown nonwoven fabric. Spraying a layer of reticular carbon fiber on the inner surface and the outer surface of the SMS fiber layer through melt-blowing equipment, and then spraying a layer of SMS fiber layer on the outer sides of the upper reticular carbon fiber layer and the lower reticular carbon fiber layer; the printed product is printed on the lower surface of the melt-blown non-woven fabric product by adopting a laminating process, the medical non-woven fabric is prepared by laminating for 4min at the temperature of 65 ℃, then heating to 85 ℃ and laminating for 1.5min at the temperature rising and falling speed of 10 ℃/1min and cooling.
The data of the examples are measured as thickness difference and stretching ratio.
Thickness difference: the difference between the maximum thickness and the minimum thickness was measured for the same nonwoven fabric using a micrometer.
Experimental data:
Figure BDA0002564820370000071
through experimental data, the product of the invention has good tensile property.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, it should be noted that, for those skilled in the art, many modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.

Claims (10)

1. The utility model provides a medical coating non-woven fabrics of high tenacity, includes the intermediate level and is located the upper surface layer and the lower surface layer of intermediate level both sides respectively which characterized in that:
the middle layer is formed by processing and applying acid on the surface of the base material through a plasma space to form a wool fiber surface;
the upper surface layer is a spraying layer containing thermoplastic foaming particles;
the lower surface layer is an SMS fiber layer containing reticular carbon fibers.
2. The high-tenacity medical coated nonwoven fabric according to claim 1, wherein: the plasma space is a space area which is discharged by burning plasma and is arranged in a fine crushing mode, the acid is sprayed into the plasma space in a mist mode, and the base material passes through the plasma space at a constant speed.
3. The high-tenacity medical coated nonwoven fabric according to claim 2, wherein: the acid is at least one of carboxylic acid, sulfonic acid and phosphoric acid.
4. The high-tenacity medical coated nonwoven fabric according to claim 3, wherein: the carboxylic acid includes at least one selected from acrylic acid, methacrylic acid, fumaric acid, maleic acid, citraconic acid, and cinnamic acid.
5. The high-tenacity medical coated nonwoven fabric according to claim 1, wherein: the base material is any one of melt-blown non-woven fabric, short fiber hot-rolled non-woven fabric and wet non-woven material.
6. A preparation method of a high-toughness medical coating non-woven fabric is characterized by comprising the following steps:
s1, performing surface treatment application on the base material through a plasma space by using acid to enable the base material to have surface wool fibers;
s2, mixing and stirring the thermoplastic foaming particles and the glue according to a certain proportion, putting the mixture into melt-blowing equipment, and spraying the mixture onto the upper surface of the product obtained in the step S1 through the melt-blowing equipment;
s3, spraying a layer of reticular carbon fiber on the inner surface and the outer surface of the SMS fiber layer through melt-blowing equipment, and then spraying a layer of SMS fiber layer on the outer sides of the upper reticular carbon fiber layer and the lower reticular carbon fiber layer;
s4, printing the product obtained in the step S3 on the lower surface of the product obtained in the step S1 by adopting a laminating process, laminating for 3-5min at the temperature of 60-75 ℃, then heating to 80-95 ℃ and laminating for 1-2min, wherein the temperature rising and falling speed is 10 ℃/1min, and cooling to obtain the medical non-woven fabric.
7. The method for preparing a high-toughness medical coated non-woven fabric according to claim 6, wherein the method comprises the following steps: the step S1 specifically includes:
s11, combusting plasma in the plasma generator to discharge to form a plasma space in the plasma generator under the inert gas environment;
s12, continuously spraying atomized acid liquor into the plasma space, wherein the atomized acid liquor is formed after ultrasonic oscillation;
and S13, enabling the base material to pass through at a constant speed in a direction parallel to the spraying direction of the mist acid liquid.
8. The method for preparing the high-toughness medical coated non-woven fabric according to claim 6, wherein the step S2 specifically comprises the following steps:
s21, dispersing and cutting the thermoplastic foaming particles into fine particles, adding the fine particles and glue into a stirring kettle according to the volume ratio of 1:1, and stirring for 60-100 min at the rotation speed of 2000-6000;
s22, transferring the product obtained in the step S21 into a container, and keeping the temperature at 180 ℃ and 250 ℃ to ensure that the product is in a hot melting state;
s23, transferring the product of the step S22 into a melt-blowing device under the condition of heat preservation, and then melt-blowing the product of the step S1 to the upper surface.
9. The method for preparing a high-toughness medical coated non-woven fabric according to claim 8, wherein the method comprises the following steps: in the step S22, the thickness of the melt-blown to the upper surface of the product of the step S1 is 0.1-0.2 mm.
10. The method for preparing a high-toughness medical coated non-woven fabric according to claim 6, wherein the method comprises the following steps: the inert gas is any one of helium and argon.
CN202010626131.6A 2020-07-01 2020-07-01 High-toughness medical coating non-woven fabric and preparation method thereof Pending CN111716856A (en)

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US20050003178A1 (en) * 2003-04-21 2005-01-06 Detert James W. Apparatus and methods for the attachment of materials to polyurethane foam, and articles made using them
CN1718909A (en) * 2004-07-09 2006-01-11 卡尔弗罗伊登柏格两合公司 Functional non-woven fabric,mfg.method and use thereof
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