阅读说明：本技术 一种舒适高透气复合材料及其制备方法 (Comfortable high-permeability composite material and preparation method thereof ) 是由 梁永江 张维军 于 2021-01-29 设计创作，主要内容包括：本发明公开了一种舒适高透气复合材料,包括绵柔层、熔喷层和载体层,复合材料制备方法是通过抽取聚丙烯母粒后进行加热熔融成型,将成型的原料经过挤出成丝后进行热风拉伸,以无纺布为载体层并为其布胶,再将拉伸的原料喷淋在载体层上进行托网冷却,令原料冷却为熔喷层,将绵柔层覆盖在熔喷层上后一起进行压合,最后进行收卷、分切和包装,成型复合材料的透湿量可达4000g/m/4hr,耐水压可达30mbar以上,具有防水透气性高、重量小和柔软舒适度高的优点,适用于防护服以及尿裤、卫生巾和乳垫等一次性卫生用品的底膜组成材料。(The invention discloses a comfortable high-permeability composite material, which comprises a soft layer, a melt-blown layer and a carrier layer, wherein the preparation method of the composite material comprises the steps of heating, melting and forming after polypropylene master batches are extracted, hot air stretching is carried out after the formed raw materials are extruded into filaments, non-woven fabrics are taken as the carrier layer and are glued, then the stretched raw materials are sprayed on the carrier layer for supporting and cooling, the raw materials are cooled into the melt-blown layer, the soft layer is covered on the melt-blown layer and then are pressed together, and finally, rolling, slitting and packaging are carried out, the moisture permeability of the formed composite material can reach 4000g/m/4hr, the water pressure resistance can reach more than 30mbar, and the composite material has the advantages of high waterproof and air permeability, small weight, softness and high comfort level, and is suitable for primary sanitary products such as protective clothing, diapers, sanitary towels, breast pads and the like.)

1. The utility model provides a comfortable high ventilative combined material, its characterized in that it is in proper order by cotton soft layer (4), melt-blown layer (1) and carrier layer (2) hot pressing, online heat bonding or ultrasonic wave pressfitting form, melt-blown layer (1) is melt-blown by the polypropylene master batch and is constituted, carrier layer (2) adopt to glue and glue non-woven fabrics or hot-blast non-woven fabrics and constitute, cotton soft layer (4) adopt hot-blast non-woven fabrics, super gentle glue and glue non-woven fabrics or pure cotton non-woven fabrics.

2. The comfortable and highly breathable composite according to claim 1, characterized in that between the meltblown layer (1) and the carrier layer (2) there is partially coated a first glue layer (3).

3. The comfortable and highly breathable composite according to claim 2, characterized in that said first layer of glue (3) is distributed in an amount of between 1 and 6 grams per square.

4. The comfortable and highly breathable composite material according to claim 1, characterized in that a second glue layer (5) is partially coated between the soft layer (4) and the meltblown layer (1).

5. The comfortable and highly breathable composite according to claim 1, characterized in that it has a grammage of 41-115, said meltblown layer (1) has a grammage of 15-35, said carrier layer (2) has a grammage of 13-40 and said soft layer (4) has a grammage of 13-40.

6. A method for preparing the comfortable highly breathable composite material according to any one of claims 1, 2, 3 or 5, characterized in that it comprises the following steps:

(1) after the polypropylene master batch is extracted, heating, melting and molding are carried out;

(2) extruding the formed raw materials into filaments after metering and conveying;

(3) hot air stretching the raw material to be formed into filaments;

(4) extracting the non-woven fabric as a carrier layer, and locally gluing the carrier layer in a glue scraping or roll gluing mode to form a first glue layer;

(5) after the stretched raw material melt-spraying material is coated on the carrier layer with the glue, placing the stretched raw material melt-spraying material and the carrier layer with the glue on a supporting net for cooling, and blowing cold air to cool the raw material into a melt-spraying layer;

(6) the non-woven fabric is extracted to be a soft layer and is conveyed to cover the melt-blown layer;

(7) and rolling, cutting and packaging the soft layer, the melt-blown layer, the first adhesive layer and the carrier layer after hot pressing.

7. The method for preparing a comfortable and highly breathable composite material according to claim 6, wherein the temperature of hot air stretching in the step (3) is 180-300 ℃, and the wind speed of hot air is 1000-1300 m/min; the temperature of the extruded filament in the step (2) is 200-240 ℃; the blowing cold wind speed in the step (5) is 800-1200 m/min; and (7) carrying out hot pressing by adopting a pattern roller.

8. A method for preparing a comfortable highly breathable composite material according to any one of claims 1 to 5, characterized in that it comprises the following steps:

(1) after the polypropylene master batch is extracted, heating, melting and molding are carried out;

(2) extruding the formed raw materials into filaments after metering and conveying;

(3) hot air stretching the raw material to be formed into filaments;

(4) extracting the non-woven fabric as a carrier layer, and locally gluing the carrier layer in a glue scraping or roll gluing mode to form a first glue layer;

(5) after the stretched raw material melt-spraying material is coated on the carrier layer with the glue, placing the stretched raw material melt-spraying material and the carrier layer with the glue on a supporting net for cooling, and blowing cold air to cool the raw material into a melt-spraying layer;

(6) extracting the non-woven fabric into a soft layer, and locally gluing the soft layer by means of glue scraping or glue rolling to form a second glue layer;

(7) conveying the soft layer coated with the glue to cover the melt-blown layer;

(8) and rolling, cutting and packaging the soft cotton layer, the second adhesive layer, the melt-blown layer, the first adhesive layer and the carrier layer after hot pressing.

9. A method for preparing the comfortable highly breathable composite material according to any one of claims 1 or 5, characterized in that it comprises the following steps:

(1) after the polypropylene master batch is extracted, heating, melting and molding are carried out;

(2) extruding the formed raw materials into filaments after metering and conveying;

(3) hot air stretching the raw material to be formed into filaments;

(4) extracting the non-woven fabric as a carrier layer, and melting and spraying the stretched raw materials on the carrier layer;

(5) placing the carrier layer loaded with the raw materials on a supporting net for cooling, and blowing cold air to cool the raw materials into a melt-blown layer;

(6) the non-woven fabric is extracted to be a soft layer and is conveyed to cover the melt-blown layer;

(7) and rolling, cutting and packaging the cotton soft layer, the melt-blown layer and the carrier layer after ultrasonic wave pressing.

10. A method for preparing the comfortable highly breathable composite material according to any one of claims 1 or 5, characterized in that it comprises the following steps:

(1) after the polypropylene master batch is extracted, heating, melting and molding are carried out;

(2) extruding the formed raw materials into filaments after metering and conveying;

(3) hot air stretching the raw material to be formed into filaments;

(4) extracting the non-woven fabric as a carrier layer, and spraying the stretched raw material on the carrier layer;

(5) placing the carrier layer loaded with the raw materials on a supporting net for cooling, and blowing cold air to cool the raw materials into a melt-blown layer;

(6) the non-woven fabric is extracted to be a soft layer and is conveyed to cover the melt-blown layer;

(7) and the soft layer, the melt-blown layer and the carrier layer are subjected to online thermal bonding by adopting a composite roller and utilizing the residual temperature of the melt-blown layer, and then are rolled, cut and packaged.

Technical Field

The invention relates to a breathable composite material, in particular to a comfortable high-breathability composite material and a preparation method thereof.

Background

In the real life, the sanitary/protective products such as paper diapers, sanitary napkins and protective clothing are daily articles of daily use in contact, and with the development of society, the consumption demand of people on the disposable sanitary/protective products becomes more and more common, and the requirements on the comfort and the safety of the disposable sanitary/protective products become higher and higher, wherein the air permeability of the products is also one of the important indexes for measuring the quality of the products, and the products with poor air permeability can cause consumers to feel stuffy and wet easily due to the reason that water vapor is not easy to diffuse when the products are used, and can also easily cause the breeding of a large number of microorganisms, thereby affecting the physical and mental health of the consumers.

In order to improve the air permeability of products, disposable sanitary products such as diapers, sanitary towels, breast pads and the like on the market at present generally use a PE (polyethylene) breathable film as a component material of a basement membrane, and disposable non-woven fabric protective clothing adopts the PE breathable film and spun-bonded non-woven fabric to be compounded into a manufacturing material in order to have certain air permeability; because the PE breathable film is formed by mixing calcium carbonate with various types of polyethylene and micropores are generated by stretching, if the process is improperly controlled, the phenomenon of calcium carbonate powder precipitation is easy to occur, so that foreign matter pollution is caused, the moisture permeability of the breathable material is generally between 1500-3000g/m2/24hr, the moisture permeability is increased, the stretching multiple is inevitably increased, if the breathable film is stretched excessively, irregular changes such as enlargement of local holes of the breathable film are easily caused, and the phenomenon of leakage of the produced product is easily caused.

Disclosure of Invention

In order to overcome the defects of the prior art, the invention provides a comfortable high-permeability composite material and a preparation method thereof.

The technical scheme adopted by the invention for solving the technical problems is as follows:

the utility model provides a comfortable high ventilative combined material, is formed by continuous soft layer, melt-blown layer and carrier layer hot pressing, online heat bonding or ultrasonic wave pressfitting in proper order, melt-blown layer is melt-blown by the polypropylene master batch and is constituted, the carrier layer adopts and glues non-woven fabrics or hot-blast non-woven fabrics to constitute, continuous soft layer adopts hot-blast non-woven fabrics, super gentle to glue non-woven fabrics or pure cotton non-woven fabrics.

And a first glue layer is partially coated between the melt-blown layer and the carrier layer.

The glue distribution amount of the first glue layer is 1-6 g per square.

And a second adhesive layer is locally coated between the soft cotton layer and the melt-blown layer.

The square meter gram weight of the composite material is 41-115, the square meter gram weight of the melt-blown layer is 15-35, the square meter gram weight of the carrier layer is 13-40, and the square meter gram weight of the soft layer is 13-40.

A preparation method of a comfortable high-permeability composite material comprises the following steps:

(1) after the polypropylene master batch is extracted, heating, melting and molding are carried out;

(2) extruding the formed raw materials into filaments after metering and conveying;

(3) hot air stretching the raw material to be formed into filaments;

(4) extracting the non-woven fabric as a carrier layer, and locally gluing the carrier layer in a glue scraping or roll gluing mode to form a first glue layer;

(5) after the stretched raw material melt-spraying material is coated on the carrier layer with the glue, placing the stretched raw material melt-spraying material and the carrier layer with the glue on a supporting net for cooling, and blowing cold air to cool the raw material into a melt-spraying layer;

(6) the non-woven fabric is extracted to be a soft layer and is conveyed to cover the melt-blown layer;

(7) and rolling, cutting and packaging the soft layer, the melt-blown layer, the first adhesive layer and the carrier layer after hot pressing.

The temperature of hot air stretching in the step (3) is 180-300 ℃, and the air speed of the hot air is 1000-1300 m/min; the temperature of the extruded filament in the step (2) is 200-240 ℃; the blowing cold wind speed in the step (5) is 800-1200 m/min; and (7) carrying out hot pressing by adopting a pattern roller.

A preparation method of a comfortable high-permeability composite material comprises the following steps:

(1) after the polypropylene master batch is extracted, heating, melting and molding are carried out;

(2) extruding the formed raw materials into filaments after metering and conveying;

(3) hot air stretching the raw material to be formed into filaments;

(4) extracting the non-woven fabric as a carrier layer, and locally gluing the carrier layer in a glue scraping or roll gluing mode to form a first glue layer;

(5) after the stretched raw material melt-spraying material is coated on the carrier layer with the glue, placing the stretched raw material melt-spraying material and the carrier layer with the glue on a supporting net for cooling, and blowing cold air to cool the raw material into a melt-spraying layer;

(6) extracting the non-woven fabric into a soft layer, and locally gluing the soft layer by means of glue scraping or glue rolling to form a second glue layer;

(7) conveying the soft layer coated with the glue to cover the melt-blown layer;

(8) and rolling, cutting and packaging the soft cotton layer, the second adhesive layer, the melt-blown layer, the first adhesive layer and the carrier layer after hot pressing.

A preparation method of a comfortable high-permeability composite material comprises the following steps:

(1) after the polypropylene master batch is extracted, heating, melting and molding are carried out;

(2) extruding the formed raw materials into filaments after metering and conveying;

(3) hot air stretching the raw material to be formed into filaments;

(4) extracting the non-woven fabric as a carrier layer, and melting and spraying the stretched raw materials on the carrier layer;

(5) placing the carrier layer loaded with the raw materials on a supporting net for cooling, and blowing cold air to cool the raw materials into a melt-blown layer;

(6) the non-woven fabric is extracted to be a soft layer and is conveyed to cover the melt-blown layer;

(7) and rolling, cutting and packaging the cotton soft layer, the melt-blown layer and the carrier layer after ultrasonic wave pressing.

A preparation method of a high-permeability composite material comprises the following steps:

(1) after the polypropylene master batch is extracted, heating, melting and molding are carried out;

(2) extruding the formed raw materials into filaments after metering and conveying;

(3) hot air stretching the raw material to be formed into filaments;

(4) extracting the non-woven fabric as a carrier layer, and spraying the stretched raw material on the carrier layer;

(5) placing the carrier layer loaded with the raw materials on a supporting net for cooling, and blowing cold air to cool the raw materials into a melt-blown layer;

(6) the non-woven fabric is extracted to be a soft layer and is conveyed to cover the melt-blown layer;

(7) and the soft layer, the melt-blown layer and the carrier layer are subjected to online thermal bonding by adopting a composite roller and utilizing the residual temperature of the melt-blown layer, and then are rolled, cut and packaged.

The invention has the beneficial effects that: the invention is through taking out polypropylene masterbatch, heat and melt and shape, carry on hot-blast stretching after extruding the raw materials formed into silk, regard non-woven fabrics as the carrier layer and cloth glue for it, spray the stretched raw materials on the carrier layer and carry on the cooling of the net, make the raw materials cool to melt-blown layer, cover the cotton soft layer on melt-blown layer and carry on the pressfitting together, roll up, cut and pack finally, the moisture permeability of the shaping composite material can reach 4000g/m/4hr, the water pressure resistance can reach more than 30mbar, it is high to have waterproof air permeability, light and soft advantage with high comfort level, suitable for the basement membrane component material of disposable sanitary products such as protective clothing and diaper, sanitary towel and breast pad, etc.

Drawings

The invention is further illustrated with reference to the following figures and examples.

FIG. 1 is a schematic structural view of a first embodiment of a composite material;

FIG. 2 is a flow chart of a method of making a first embodiment of a composite material;

FIG. 3 is a schematic structural view of a second embodiment of a composite material;

FIG. 4 is a flow chart of a method of making a second embodiment of a composite material

FIG. 5 is a schematic structural view of a third embodiment of a composite material;

FIG. 6 is a flow chart of a method of making a third embodiment of the composite material;

FIG. 7 is a schematic structural view of a fourth embodiment of the composite material;

FIG. 8 is a flow chart of a first method of making a fourth embodiment of a composite material;

fig. 9 is a flow chart of a second method of making an embodiment four of a composite material.

Detailed Description

The first embodiment is as follows:

referring to fig. 1, the comfortable high-permeability composite material is formed by sequentially hot-pressing a soft layer 4, a melt-blown layer 1 and a carrier layer 2, wherein the melt-blown layer 1 is formed by melt-blowing polypropylene master batches, the carrier layer 2 is formed by adopting a spun-bonded non-woven fabric or a hot-air non-woven fabric, the soft layer 4 is formed by adopting a hot-air non-woven fabric, an ultra-soft spun-bonded non-woven fabric or a pure cotton non-woven fabric, the composite material is formed by compounding the online melt-blown non-woven fabric, the moisture permeability can be more than 4000g/m2/24hr, and the water; the soft layer 4 can improve the softness comfort degree and application performance of the composite material, and the two sides of the melt-blown layer are provided with a protective layer, so that the melt-blown layer which is easy to embrittle and break is protected, and the melt-blown layer is prevented from directly contacting with a human body.

If the mask is made of the composite material, the mask can be manufactured only by feeding, cutting and folding and then carrying out ultrasonic ear-wearing, the production efficiency is high, and the soft layer 4 is the inner side and brings soft feeling when contacting the face of a human body; when the cotton-soft layer 4 is used as a protective clothing manufacturing material, the cotton-soft layer is also the inner side, and hot air non-woven fabrics, super-soft non-woven fabrics or pure cotton non-woven fabrics can be selected, so that a user feels more comfortable; when the soft layer 4 is used as a base film manufacturing material of the diaper, the soft layer can be selected from hot air non-woven fabric, super soft non-woven fabric or pure cotton non-woven fabric to improve hand feeling and softness; when used as a material for making a base film of a sanitary napkin, the soft layer 4 can be only provided on the inner side in consideration of the stability of use after the back adhesive is applied to the base film.

A first glue layer 3 is partially coated between the melt-blown layer 1 and the carrier layer 2.

The glue distribution amount of the first glue layer 3 is 1-6 g per square, so that the bonding strength of the melt-blown layer 1 and the carrier layer 2 can be increased.

The square meter gram weight of the composite material is 41-115, the square meter gram weight of the melt-blown layer 1 is 15-35, the square meter gram weight of the carrier layer 2 is 13-40, and the square meter gram weight of the soft cotton layer 4 is 13-40, so that the self weight can be effectively minimized under the condition that the air permeability of the composite material is not influenced.

Referring to fig. 2, a method for preparing a comfortable high-permeability composite material, the method comprising:

(1) and after the polypropylene master batch is extracted, heating and melting molding are carried out, wherein the temperature is 150-250 ℃.

(2) And extruding the formed raw materials into filaments after metering and conveying, wherein the temperature for extruding into filaments is 200-240 ℃.

(3) And hot air stretching is carried out on the raw materials for forming the filaments, the adopted temperature is 180-300 ℃, the hot air speed is 1000-1300m/min, and the effect of stretching the polypropylene master batch is optimal.

(4) Extracting the non-woven fabric as a carrier layer, and locally gluing the carrier layer in a glue scraping or roll gluing mode to form a first glue layer;

(5) and after the stretched raw material melt-spraying material is arranged on the carrier layer which is coated with the glue, the stretched raw material melt-spraying material and the carrier layer are placed on a supporting net for cooling, and the raw material is cooled into a melt-spraying layer by blowing cold air at the wind speed of 800-.

(6) The non-woven fabric is extracted to be a soft layer and is conveyed to cover the melt-blown layer;

(7) and rolling, cutting and packaging the soft layer, the melt-blown layer, the first adhesive layer and the carrier layer after hot pressing.

The pressing and the geometric patterns are generated simultaneously, so that the local gluing in the step 4 can be implemented in a glue scraping mode, the first glue layer is in a block-surface-shaped pattern in the carrier layer, the glue distribution mode through roller transfer can also be adopted, the pattern can be formed in a hollow shape in the mode, namely the first glue layer is in a frame pattern in the carrier layer, and the specific hot pressing is as follows:

after the carrier layer (non-woven fabric) is glued, the glue is melt-blown and sprayed on the carrier layer to form a melt-blown layer, and then the melt-blown layer is combined through a flat pressing roller, wherein the temperature of the pressing roller is 30-100 ℃, the pressure is 0.5-3kg/cm2, the melt-blown layer has no patterns, and the combination strength is 1-4N.

Or the carrier layer (non-woven fabric) is coated with glue and then is melt-blown and drenched on the carrier layer to form a melt-blown layer, and the melt-blown layer is combined by a patterned roller, the hot-pressing temperature is 50-130 ℃, the pressure is 0.5-3.5kg/cm2, the melt-blown layer has patterns, and the combination strength is 1.5-5N.

The patterns formed on the composite material make the composite material more beautiful and simultaneously play a role in consolidation.

Example two:

referring to fig. 3, the comfortable high-permeability composite material is formed by sequentially hot-pressing a soft layer 4, a melt-blown layer 1 and a carrier layer 2, wherein the melt-blown layer 1 is formed by melt-blowing polypropylene master batches, the carrier layer 2 is formed by adopting a spun-bonded non-woven fabric or a hot-air non-woven fabric, the soft layer 4 is formed by adopting a hot-air non-woven fabric, an ultra-soft spun-bonded non-woven fabric or a pure cotton non-woven fabric, the composite material is formed by compounding the online melt-blown non-woven fabric, the moisture permeability can be more than 4000g/m2/24hr, and the water; the soft layer 4 can improve the softness comfort degree and application performance of the composite material, and the two sides of the melt-blown layer are provided with a protective layer, so that the melt-blown layer which is easy to embrittle and break is protected, and the melt-blown layer is prevented from directly contacting with a human body.

If the mask is made of the composite material, the mask can be manufactured only by feeding, cutting and folding and then carrying out ultrasonic ear-wearing, the production efficiency is high, and the soft layer 4 is the inner side and brings soft feeling when contacting the face of a human body; when the cotton-soft layer 4 is used as a protective clothing manufacturing material, the cotton-soft layer is also the inner side, and hot air non-woven fabrics, super-soft non-woven fabrics or pure cotton non-woven fabrics can be selected, so that a user feels more comfortable; when the soft layer 4 is used as a base film manufacturing material of the diaper, the soft layer can be selected from hot air non-woven fabric, super soft non-woven fabric or pure cotton non-woven fabric to improve hand feeling and softness; when used as a material for making a base film of a sanitary napkin, the soft layer 4 can be only provided on the inner side in consideration of the stability of use after the back adhesive is applied to the base film.

A first glue layer 3 is partially coated between the melt-blown layer 1 and the carrier layer 2.

The glue distribution amount of the first glue layer 3 is 1-6 g per square, so that the bonding strength of the melt-blown layer 1 and the carrier layer 2 can be increased.

A second adhesive layer 5 is partially coated between the soft cotton layer 4 and the melt-blown layer 1, and the adhesive amount of the adhesive is 1-6 g per square, so that the bonding strength between the melt-blown layer 1 and the soft cotton layer 4 can be increased.

The square meter gram weight of the composite material is 41-115, the square meter gram weight of the melt-blown layer 1 is 15-35, the square meter gram weight of the carrier layer 2 is 13-40, and the square meter gram weight of the soft cotton layer 4 is 13-40, so that the self weight can be effectively minimized under the condition that the air permeability of the composite material is not influenced.

Referring to fig. 4, a method for preparing a comfortable high-permeability composite material, the method comprising:

(1) and after the polypropylene master batch is extracted, heating and melting molding are carried out, wherein the temperature is 150-250 ℃.

(2) And extruding the formed raw materials into filaments after metering and conveying, wherein the temperature for extruding into filaments is 200-240 ℃.

(3) And hot air stretching is carried out on the raw materials for forming the filaments, the adopted temperature is 180-300 ℃, the hot air speed is 1000-1300m/min, and the effect of stretching the polypropylene master batch is optimal.

(4) The non-woven fabric is extracted to be the carrier layer, and the carrier layer is locally glued through glue scraping or roller glue mode to form a first glue layer.

(5) And after the stretched raw material melt-spraying material is arranged on the carrier layer which is coated with the glue, the stretched raw material melt-spraying material and the carrier layer are placed on a supporting net for cooling, and the raw material is cooled into a melt-spraying layer by blowing cold air at the wind speed of 800-.

(6) Extracting the non-woven fabric into a soft layer, and locally gluing the soft layer by means of glue scraping or glue rolling to form a second glue layer;

(7) conveying the soft layer coated with the glue to cover the melt-blown layer;

(8) and rolling, cutting and packaging the soft cotton layer, the second adhesive layer, the melt-blown layer, the first adhesive layer and the carrier layer after hot pressing.

The pressing generates geometric patterns simultaneously, so that the glue scraping mode can be adopted in the local gluing in the step 4, the first glue layer is in a block-surface-shaped pattern in the shape of the carrier layer, the roller-transferring glue distribution mode can also be adopted, the pattern can be formed in a hollow shape in the mode, namely, the first glue layer is in a frame pattern in the shape of the carrier layer, the second glue layer is in the same way, and the specific hot pressing is as follows:

and coating the first adhesive layer and the second adhesive layer to form a melt-blown layer, and then combining the first adhesive layer and the second adhesive layer through a flat pressing roller, wherein the temperature of the pressing roller is 30-100 ℃, the pressure is 0.5-3kg/cm2, the melt-blown layer has no patterns, and the bonding strength is 1-4N.

Or coating the first adhesive layer and the second adhesive layer to form a melt-blown layer, and then combining the layers by a pattern roller, wherein the hot pressing temperature is 50-130 ℃, the pressure is 0.5-3.5kg/cm2, the melt-blown layer has patterns, and the bonding strength is 1.5-5N.

The patterns formed on the composite material make the composite material more beautiful and simultaneously play a role in consolidation.

In this embodiment, the hot melt adhesive layers are disposed between the soft layer 4 and the meltblown layer 1 and between the meltblown layer 1 and the carrier layer 2, so that the formed composite material has considerable solidity.

Example three:

referring to fig. 5, the comfortable high-permeability composite material is formed by sequentially hot-pressing a soft layer 4, a melt-blown layer 1 and a carrier layer 2, wherein the melt-blown layer 1 is formed by melt-blowing polypropylene master batches, the carrier layer 2 is formed by adopting a spun-bonded non-woven fabric or a hot-air non-woven fabric, the soft layer 4 is formed by adopting a hot-air non-woven fabric, an ultra-soft spun-bonded non-woven fabric or a pure cotton non-woven fabric, the composite material is formed by compounding the online melt-blown non-woven fabric, the moisture permeability can be more than 4000g/m2/24hr, and the water; the soft layer 4 can improve the softness comfort degree and application performance of the composite material, and the two sides of the melt-blown layer are provided with a protective layer, so that the melt-blown layer which is easy to embrittle and break is protected, and the melt-blown layer is prevented from directly contacting with a human body.

If the mask is made of the composite material, the mask can be manufactured only by feeding, cutting and folding and then carrying out ultrasonic ear-wearing, the production efficiency is high, and the soft layer 4 is the inner side and brings soft feeling when contacting the face of a human body; when the cotton-soft layer 4 is used as a protective clothing manufacturing material, the cotton-soft layer is also the inner side, and hot air non-woven fabrics, super-soft non-woven fabrics or pure cotton non-woven fabrics can be selected, so that a user feels more comfortable; when the soft layer 4 is used as a base film manufacturing material of the diaper, the soft layer can be selected from hot air non-woven fabric, super soft non-woven fabric or pure cotton non-woven fabric to improve hand feeling and softness; when used as a material for making a base film of a sanitary napkin, the soft layer 4 can be only provided on the inner side in consideration of the stability of use after the back adhesive is applied to the base film.

A second adhesive layer 5 is partially coated between the soft cotton layer 4 and the melt-blown layer 1, and the adhesive amount of the adhesive is 1-6 g per square, so that the bonding strength between the melt-blown layer 1 and the soft cotton layer 4 can be increased.

The square meter gram weight of the composite material is 41-115, the square meter gram weight of the melt-blown layer 1 is 15-35, the square meter gram weight of the carrier layer 2 is 13-40, and the square meter gram weight of the soft cotton layer 4 is 13-40, so that the self weight can be effectively minimized under the condition that the air permeability of the composite material is not influenced.

Referring to fig. 6, a method for preparing a comfortable high-permeability composite material, the method comprising:

(1) and after the polypropylene master batch is extracted, heating and melting molding are carried out, wherein the temperature is 150-250 ℃.

(2) And extruding the formed raw materials into filaments after metering and conveying, wherein the temperature for extruding into filaments is 200-240 ℃.

(3) And hot air stretching is carried out on the raw materials for forming the filaments, the adopted temperature is 180-300 ℃, the hot air speed is 1000-1300m/min, and the effect of stretching the polypropylene master batch is optimal.

(4) And extracting the non-woven fabric as a carrier layer, after the stretched raw material is molten and sprayed on the carrier layer, placing the carrier layer and the stretched raw material on a supporting net for cooling, and cooling the raw material into a molten and sprayed layer by blowing cold air at the wind speed of 800-.

(5) Extracting the non-woven fabric into a soft layer, and locally gluing the soft layer by means of glue scraping or glue rolling to form a second glue layer;

(6) conveying the soft layer coated with the glue to cover the melt-blown layer;

(7) and rolling, cutting and packaging the soft cotton layer, the second adhesive layer, the melt-blown layer and the carrier layer after hot pressing.

Pressing and simultaneously generating geometric patterns, so that the local gluing in the step 5 can be implemented by adopting a glue scraping mode, the second glue layer is in a block-surface-shaped pattern in the soft layer, and a roller glue transferring mode can also be adopted, the patterns can be formed in a hollow shape in the mode, namely the second glue layer is in a frame pattern in the soft layer, and the specific hot pressing is as follows:

and coating a second adhesive layer to form a melt-blown layer, and then combining by a flat pressing roller, wherein the temperature of the pressing roller is 30-100 ℃, the pressure is 0.5-3kg/cm2, the melt-blown layer has no patterns, and the bonding strength is 1-4N.

Or coating a second adhesive layer to form a melt-blown layer, and then combining the two layers by a pattern roller, wherein the hot pressing temperature is 50-130 ℃, the pressure is 0.5-3.5kg/cm2, the melt-blown layer has patterns, and the bonding strength is 1.5-5N.

The patterns formed on the composite material make the composite material more beautiful and simultaneously play a role in consolidation.

Example four:

referring to fig. 7, the comfortable high-permeability composite material is formed by sequentially hot-pressing a soft layer 4, a melt-blown layer 1 and a carrier layer 2, wherein the melt-blown layer 1 is formed by melt-blowing polypropylene master batches, the carrier layer 2 is formed by adopting a spun-bonded non-woven fabric or a hot-air non-woven fabric, the soft layer 4 is formed by adopting a hot-air non-woven fabric, an ultra-soft spun-bonded non-woven fabric or a pure cotton non-woven fabric, the composite material is formed by compounding the online melt-blown non-woven fabric, the moisture permeability can be more than 4000g/m2/24hr, and the water; the soft layer 4 can improve the softness comfort degree and application performance of the composite material, and the two sides of the melt-blown layer are provided with a protective layer, so that the melt-blown layer which is easy to embrittle and break is protected, and the melt-blown layer is prevented from directly contacting with a human body.

If the mask is made of the composite material, the mask can be manufactured only by feeding, cutting and folding and then carrying out ultrasonic ear-wearing, the production efficiency is high, and the soft layer 4 is the inner side and brings soft feeling when contacting the face of a human body; when the cotton-soft layer 4 is used as a protective clothing manufacturing material, the cotton-soft layer is also the inner side, and hot air non-woven fabrics, super-soft non-woven fabrics or pure cotton non-woven fabrics can be selected, so that a user feels more comfortable; when the soft layer 4 is used as a base film manufacturing material of the diaper, the soft layer can be selected from hot air non-woven fabric, super soft non-woven fabric or pure cotton non-woven fabric to improve hand feeling and softness; when used as a material for making a base film of a sanitary napkin, the soft layer 4 can be only provided on the inner side in consideration of the stability of use after the back adhesive is applied to the base film.

The square meter gram weight of the composite material is 41-115, the square meter gram weight of the melt-blown layer 1 is 15-35, the square meter gram weight of the carrier layer 2 is 13-40, and the square meter gram weight of the soft cotton layer 4 is 13-40, so that the self weight can be effectively minimized under the condition that the air permeability of the composite material is not influenced.

Referring to fig. 8, a method for preparing a comfortable high-permeability composite material, the method comprising:

(1) and after the polypropylene master batch is extracted, heating and melting molding are carried out, wherein the temperature is 150-250 ℃.

(2) And extruding the formed raw materials into filaments after metering and conveying, wherein the temperature for extruding into filaments is 200-240 ℃.

(3) And hot air stretching is carried out on the raw materials for forming the filaments, the adopted temperature is 180-300 ℃, the hot air speed is 1000-1300m/min, and the effect of stretching the polypropylene master batch is optimal.

(4) Extracting the non-woven fabric as a carrier layer, and melting and spraying the stretched raw materials on the carrier layer;

(5) and placing the carrier layer loaded with the raw materials on a supporting net for cooling, cooling the raw materials into a melt-blown layer by blowing cold air, and cooling the raw materials into the melt-blown layer by blowing cold air at the wind speed of 800-.

(6) The non-woven fabric is extracted to be a soft layer and is conveyed to cover the melt-blown layer;

(7) carrying out ultrasonic lamination on the soft layer, the melt-blown layer and the carrier layer, and then rolling, slitting and packaging; the geometric patterns are generated during pressing, and when ultrasonic pressing is performed, the patterns can be pressed on the composite material through the ultrasonic die head, so that the composite material is more attractive and plays a role in solidification. Compared with the first three hot pressing preparation methods, the method can ensure the structural strength among the layers through ultrasonic pressing, does not need to coat an adhesive layer, and simplifies the preparation process.

Referring to fig. 9, a second method for preparing the comfortable highly breathable composite material of this embodiment is as follows:

(1) and after the polypropylene master batch is extracted, heating and melting molding are carried out, wherein the temperature is 150-250 ℃.

(2) And extruding the formed raw materials into filaments after metering and conveying, wherein the temperature for extruding into filaments is 200-240 ℃.

(3) And hot air stretching is carried out on the raw materials for forming the filaments, the adopted temperature is 180-300 ℃, the hot air speed is 1000-1300m/min, and the effect of stretching the polypropylene master batch is optimal.

(4) Extracting the non-woven fabric as a carrier layer, and spraying the stretched raw material on the carrier layer;

(5) and placing the carrier layer loaded with the raw materials on a supporting net for cooling, cooling the raw materials into a melt-blown layer by blowing cold air, and cooling the raw materials into the melt-blown layer by blowing cold air at the wind speed of 800-.

(6) The non-woven fabric is extracted to be a soft layer and is conveyed to cover the melt-blown layer;

(7) and the soft layer, the melt-blown layer and the carrier layer are subjected to online thermal bonding by adopting a composite roller and utilizing the residual temperature of the melt-blown layer, and then are rolled, cut and packaged.

The mode of the embodiment is that the adhesiveness of the melt-blown layer and the residual temperature of the melt-blown layer after being cooled by the supporting net are utilized, and the composite roller is used for pressing, so that an ultrasonic die head or a glue distribution hot-pressing mode is not needed for manufacturing, and the production process is simpler and more convenient.

It should be noted that in all the examples, a screw extruder can be used for heating, melting, metering and conveying, and die spinning through a die spinning die.

The above embodiments do not limit the scope of the present invention, and those skilled in the art can make equivalent modifications and variations without departing from the overall concept of the present invention.