A method for preparing functional composite nonwoven fabric

Abstract

The present invention provides a method for preparing a functional composite nonwoven fabric, and relates to the technical field of nonwoven fabric preparation. The method for preparing the functional composite nonwoven fabric, S1, firstly mix polyester fiber, glass fiber and polyester fiber, and obtain mixed fiber, and the mixed mixed fiber is subjected to an opening treatment, and then the mixed fiber after the treatment is placed in a web laying machine for horizontal cross laying into 5-6 layers. By adopting a double-layer nonwoven fabric structure design, air freshening particles are placed between the double-layer nonwoven fabric, and a layer of methylcellulose sodium salt is applied to the air freshening particles, wherein the methylcellulose sodium salt can protect the internal air freshening particles and reduce the loss of fragrance, and the methylcellulose sodium salt can absorb water vapor to avoid water droplets on the inner side of the prepared mask, and the methylcellulose sodium salt will dissolve after absorbing water vapor, and the internally coated air freshening particles are exposed, so that the prepared mask is fresh in air when in use.

Description

Technical Field

[0001] The invention relates to the technical field of non-woven fabric preparation, and in particular to a method for preparing a functional composite non-woven fabric. Background Art

[0002] Functional non-woven fabric is a non-woven fabric that has specific functions after special treatment or adding functional additives. One of the materials used in the preparation of masks is functional non-woven fabric. Masks are a kind of sanitary and epidemic prevention products, generally worn on the mouth and nose to filter the air entering the mouth and nose, so as to block harmful gases, odors, droplets, viruses and other substances.

[0003] Currently, there are several problems with masks during use: (1) Wearing the mask for a long time will cause water droplets to form on the inside of the mask, seriously affecting the wearing comfort, especially in the cold winter; (2) When wearing the mask, the user will feel uncomfortable due to bad breath. Summary of the invention

[0004] 1. Technical issues to be solved

[0005] In view of the deficiencies in the prior art, the present invention provides a method for preparing a functional composite non-woven fabric, which solves the problem that water droplets and odor exist on the inner side of a mask made of functional non-woven fabric, thereby causing discomfort to the user.

[0006] (II) Technical solution

[0007] To achieve the above objectives, the present invention is implemented by the following technical scheme: A method for preparing a functional composite non-woven fabric, comprising the following specific steps:

[0008] S1. First, polyester fiber, glass fiber and polyester fiber are mixed to obtain mixed fiber, and the mixed fiber is loosened, and then the mixed fiber is placed in a web laying machine for cross-laying into 5-6 layers;

[0009] S2, placing the laid mixed fibers into a carding machine to card into a fiber web, then treating them by a hydroentanglement method, and then hydroentangled by a high-pressure nozzle to form the fibers, and finally drying them to obtain the first layer of non-woven fabric;

[0010] S3, preparing a second layer of non-woven fabric by using steps S1 and S2, and keeping the prepared first layer of non-woven fabric and second layer of non-woven fabric for standby use;

[0011] S4 grinds dried lemon and mint into powder using a grinding device, and sieves them using a sieve, then puts the powder into a mixing container, adds water and mixes into a paste, pours the prepared paste into a mold, and finally puts it into a drying device for drying to obtain air freshener particles with a diameter of 0.5 mm;

[0012] S5, putting sodium carboxymethyl cellulose into a mixing container, adding water to mix into a solution, then putting the air freshener particles prepared in S4 into the solution for coating treatment, and finally drying in a drying device;

[0013] S6, evenly distributing the particles prepared in S5 on the first layer of non-woven fabric, and then evenly puncturing holes on the second layer of non-woven fabric by needle punching. After the puncturing is completed, the second layer of non-woven fabric is laid on the first layer of non-woven fabric to cover the particles;

[0014] S7. Finally, the first layer of non-woven fabric and the second layer of non-woven fabric are fixed together by hot rolling to obtain a functional composite non-woven fabric.

[0015] Preferably, the raw materials for preparing the functional composite non-woven fabric are as follows: 80-100 parts by weight of polyester fiber, 80-100 parts by weight of glass fiber, 80-100 parts by weight of polyester fiber, 30-50 parts by weight of dried lemon, 20-35 parts by weight of mint, 10-15 parts by weight of sodium methylcellulose and 30-35 parts by weight of water.

[0016] Preferably, the pressure of the water jet in S2 is 20-35 MPa, and the pressure of the water jet from the high-pressure nozzle in S2 is 70-100 MPa.

[0017] Preferably, the grinding time in S4 is 5 to 10 minutes, the mesh size of the sieve in S4 is 100 to 200 meshes, the temperature of the drying equipment in S4 is 80 to 100° C., and the drying time is 10 to 15 minutes.

[0018] Preferably, the temperature of the drying equipment in S5 is 50-60° C., and the drying time is 5-10 min.

[0019] Preferably, the puncture hole in S6 is 0.08-0.1 mm.

[0020] Preferably, the hot rolling temperature in S7 is 120-200° C., and the hot roller pressure is 0.5-2 MPa.

[0021] (III) Beneficial effects

[0022] The present invention provides a method for preparing a functional composite nonwoven fabric, which has the following beneficial effects:

[0023] The present invention adopts a double-layer non-woven fabric structure design, places air freshener particles between the double-layer non-woven fabrics, and applies a layer of methylcellulose sodium salt to the air freshener particles, wherein the methylcellulose sodium salt can protect the internal air freshener particles and reduce the loss of fragrance. In addition, the methylcellulose sodium salt can absorb water vapor and avoid the appearance of water droplets on the inner side of the prepared mask. When the methylcellulose sodium salt absorbs water vapor, it will dissolve and expose the internally coated air freshener particles, so that the prepared mask can refresh the air when in use. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] Embodiment 1:

[0026] The embodiment of the present invention provides a method for preparing a functional composite non-woven fabric, comprising the following specific steps:

[0027] S1. First, polyester fiber, glass fiber and polyester fiber are mixed to obtain mixed fiber, and the mixed fiber is loosened, and then the mixed fiber is placed in a web laying machine for cross-laying into 5 layers;

[0028] S2, placing the laid mixed fibers into a carding machine to card into a fiber web, then treating them by a hydroentanglement method, and then hydroentangled by a high-pressure nozzle to form the fibers, and finally drying them to obtain the first layer of non-woven fabric;

[0029] S3, preparing a second layer of non-woven fabric by using steps S1 and S2, and keeping the prepared first layer of non-woven fabric and second layer of non-woven fabric for standby use;

[0030] S4 grinds dried lemon and mint into powder using a grinding device, and sieves them using a sieve, then puts the powder into a mixing container, adds water and mixes into a paste, pours the prepared paste into a mold, and finally puts it into a drying device for drying to obtain air freshener particles with a diameter of 0.5 mm;

[0031] S5, putting sodium carboxymethyl cellulose into a mixing container, adding water to mix into a solution, then putting the air freshener particles prepared in S4 into the solution for coating treatment, and finally drying in a drying device;

[0032] S6, evenly distributing the particles prepared in S5 on the first layer of non-woven fabric, and then evenly puncturing the second layer of non-woven fabric by needle punching. After the puncturing is completed, the second layer of non-woven fabric is laid on the first layer of non-woven fabric and the particles are covered. The purpose of puncturing the second layer of non-woven fabric is to facilitate the adsorption of water vapor by methylcellulose sodium salt and to facilitate the fragrance of the air freshener particles to be emitted;

[0033] S7. Finally, the first layer of non-woven fabric and the second layer of non-woven fabric are fixed together by hot rolling to obtain a functional composite non-woven fabric. After preparation, the functional composite non-woven fabric needs to be stored in a dry environment to prevent water vapor in the air from being adsorbed by the sodium methylcellulose salt.

[0034] The raw materials used to prepare the functional composite non-woven fabric are as follows: 100 parts of polyester fiber, 100 parts of glass fiber, 100 parts of polyester fiber, 30 parts of dried lemon, 20 parts of mint, 10 parts of methylcellulose sodium salt and 30 parts of water;

[0035] Dried lemon and mint are raw materials for preparing air freshener particles, which are used to refresh the air inside the mask. The film formed by sodium methylcellulose on the surface of the air freshener particles can preserve the fragrance of the air freshener particles to prevent leakage. Sodium methylcellulose is also hygroscopic and can absorb water vapor in the user's exhaled gas to prevent water droplets from appearing on the inside of the mask. In addition, when sodium methylcellulose encounters water vapor, it will slowly dissolve, thereby exposing the air freshener particles coated inside, and then the air freshener particles will refresh the air.

[0036] The water spunlace pressure in S2 is 25MPa, the water spunlace pressure of the high-pressure nozzle in S2 is 100MPa, the grinding time in S4 is 10min, the mesh size of the screen in S4 is 150mesh, the temperature of the drying equipment in S4 is 80, and the drying time is 12min. The temperature of the drying equipment in S5 is 60℃, and the drying time is 7min. The needle hole in S6 is 0.1mm, the hot rolling temperature in S7 is 12℃, and the hot roller pressure is 2MPa.

[0037] Embodiment 2:

[0038] The embodiment of the present invention provides a method for preparing a functional composite non-woven fabric, comprising the following specific steps:

[0039] S1. First, polyester fiber, glass fiber and polyester fiber are mixed to obtain mixed fiber, and the mixed fiber is loosened, and then the mixed fiber is placed in a web laying machine for cross-laying into 5 layers;

[0040] S2, placing the laid mixed fibers into a carding machine to card into a fiber web, then treating them by a hydroentanglement method, and then hydroentangled by a high-pressure nozzle to form the fibers, and finally drying them to obtain the first layer of non-woven fabric;

[0041] S3, preparing a second layer of non-woven fabric by using steps S1 and S2, and keeping the prepared first layer of non-woven fabric and second layer of non-woven fabric for standby use;

[0042] S4 grinds dried lemon and mint into powder using a grinding device, and sieves them using a sieve, then puts the powder into a mixing container, adds water and mixes into a paste, pours the prepared paste into a mold, and finally puts it into a drying device for drying to obtain air freshener particles with a diameter of 0.5 mm;

[0043] S5, putting sodium carboxymethyl cellulose into a mixing container, adding water to mix into a solution, then putting the air freshener particles prepared in S4 into the solution for coating treatment, and finally drying in a drying device;

[0044] S6, evenly distributing the particles prepared in S5 on the first layer of non-woven fabric, and then evenly puncturing holes on the second layer of non-woven fabric by needle punching. After the puncturing is completed, the second layer of non-woven fabric is laid on the first layer of non-woven fabric to cover the particles;

[0045] S7. Finally, the first layer of non-woven fabric and the second layer of non-woven fabric are fixed together by hot rolling to obtain a functional composite non-woven fabric.

[0046] The raw materials used to prepare the functional composite non-woven fabric are as follows: 100 parts of polyester fiber, 100 parts of glass fiber, 100 parts of polyester fiber, 35 parts of dried lemon, 22 parts of mint, 11 parts of methylcellulose sodium salt and 31 parts of water;

[0047] The water spunlace pressure in S2 is 25MPa, the water spunlace pressure of the high-pressure nozzle in S2 is 100MPa, the grinding time in S4 is 10min, the mesh size of the screen in S4 is 150mesh, the temperature of the drying equipment in S4 is 80, and the drying time is 12min. The temperature of the drying equipment in S5 is 60℃, and the drying time is 7min. The needle hole in S6 is 0.1mm, the hot rolling temperature in S7 is 12℃, and the hot roller pressure is 2MPa.

[0048] Embodiment three:

[0049] The embodiment of the present invention provides a method for preparing a functional composite non-woven fabric, comprising the following specific steps:

[0050] S1. First, polyester fiber, glass fiber and polyester fiber are mixed to obtain mixed fiber, and the mixed fiber is loosened, and then the mixed fiber is placed in a web laying machine for cross-laying into 5 layers;

[0051] S2, placing the laid mixed fibers into a carding machine to card into a fiber web, then treating them by a hydroentanglement method, and then hydroentangled by a high-pressure nozzle to form the fibers, and finally drying them to obtain the first layer of non-woven fabric;

[0052] S3, preparing a second layer of non-woven fabric by using steps S1 and S2, and keeping the prepared first layer of non-woven fabric and second layer of non-woven fabric for standby use;

[0053] S4 grinds dried lemon and mint into powder using a grinding device, and sieves them using a sieve, then puts the powder into a mixing container, adds water and mixes into a paste, pours the prepared paste into a mold, and finally puts it into a drying device for drying to obtain air freshener particles with a diameter of 0.5 mm;

[0054] S5, putting sodium carboxymethyl cellulose into a mixing container, adding water to mix into a solution, then putting the air freshener particles prepared in S4 into the solution for coating treatment, and finally drying in a drying device;

[0055] S6, evenly distributing the particles prepared in S5 on the first layer of non-woven fabric, and then evenly puncturing holes on the second layer of non-woven fabric by needle punching. After the puncturing is completed, the second layer of non-woven fabric is laid on the first layer of non-woven fabric to cover the particles;

[0056] S7. Finally, the first layer of non-woven fabric and the second layer of non-woven fabric are fixed together by hot rolling to obtain a functional composite non-woven fabric.

[0057] The raw materials for preparing the functional composite non-woven fabric are as follows: 100 parts of polyester fiber, 100 parts of glass fiber, 100 parts of polyester fiber, 40 parts of dried lemon, 26 parts of mint, 12 parts of methylcellulose sodium salt and 32 parts of water;

[0058] The water spunlace pressure in S2 is 25MPa, the water spunlace pressure of the high-pressure nozzle in S2 is 100MPa, the grinding time in S4 is 10min, the mesh size of the screen in S4 is 150mesh, the temperature of the drying equipment in S4 is 80, and the drying time is 12min. The temperature of the drying equipment in S5 is 60℃, and the drying time is 7min. The needle hole in S6 is 0.1mm, the hot rolling temperature in S7 is 12℃, and the hot roller pressure is 2MPa.

[0059] Embodiment 4:

[0060] The embodiment of the present invention provides a method for preparing a functional composite non-woven fabric, comprising the following specific steps:

[0061] S1. First, polyester fiber, glass fiber and polyester fiber are mixed to obtain mixed fiber, and the mixed fiber is loosened, and then the mixed fiber is placed in a web laying machine for cross-laying into 5 layers;

[0062] S2, placing the laid mixed fibers into a carding machine to card into a fiber web, then treating them by a hydroentanglement method, and then hydroentangled by a high-pressure nozzle to form the fibers, and finally drying them to obtain the first layer of non-woven fabric;

[0063] S3, preparing a second layer of non-woven fabric by using steps S1 and S2, and keeping the prepared first layer of non-woven fabric and second layer of non-woven fabric for standby use;

[0064] S4 grinds dried lemon and mint into powder using a grinding device, and sieves them using a sieve, then puts the powder into a mixing container, adds water and mixes into a paste, pours the prepared paste into a mold, and finally puts it into a drying device for drying to obtain air freshener particles with a diameter of 0.5 mm;

[0065] S5, putting sodium carboxymethyl cellulose into a mixing container, adding water to mix into a solution, then putting the air freshener particles prepared in S4 into the solution for coating treatment, and finally drying in a drying device;

[0066] S6, evenly distributing the particles prepared in S5 on the first layer of non-woven fabric, and then evenly puncturing holes on the second layer of non-woven fabric by needle punching. After the puncturing is completed, the second layer of non-woven fabric is laid on the first layer of non-woven fabric to cover the particles;

[0067] S7. Finally, the first layer of non-woven fabric and the second layer of non-woven fabric are fixed together by hot rolling to obtain a functional composite non-woven fabric.

[0068] The raw materials for preparing the functional composite non-woven fabric are as follows: 100 parts of polyester fiber, 100 parts of glass fiber, 100 parts of polyester fiber, 50 parts of dried lemon, 35 parts of mint, 15 parts of methylcellulose sodium salt and 35 parts of water;

[0069] The water spunlace pressure in S2 is 25MPa, the water spunlace pressure of the high-pressure nozzle in S2 is 100MPa, the grinding time in S4 is 10min, the mesh size of the screen in S4 is 150mesh, the temperature of the drying equipment in S4 is 80, and the drying time is 12min. The temperature of the drying equipment in S5 is 60℃, and the drying time is 7min. The needle hole in S6 is 0.1mm, the hot rolling temperature in S7 is 12℃, and the hot roller pressure is 2MPa.

[0070] Comparative Example:

[0071] Compared with Example 1, Example 2, Example 3 and Example 4, dried lemon, mint, sodium methyl cellulose and water are not added in this example, and the rest of the preparation methods are the same as those in Example 1, Example 2, Example 3 and Example 4.

[0072] The functional composite non-woven fabrics prepared in Example 1, Example 2, Example 3, Example 4 and the comparative example were used to manufacture masks, and the results after use were recorded. The wearing time of each mask was 30 minutes. The results are shown in Table 1:

[0073] Table 1

[0074]

[0075] It can be seen from the data in Table 1 that when the functional composite non-woven fabric prepared by the method of the present invention is used to prepare a mask, no water droplets appear on the inner side of the mask during use, and the bad smell in the mouth is not obvious.

[0076] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A method for preparing a functional composite nonwoven fabric, characterized in that: The specific steps include: S1. First, polyester fiber, glass fiber and polyester fiber are mixed to obtain mixed fiber, and the mixed fiber is loosened, and then the mixed fiber is placed in a web laying machine for cross-laying into 5-6 layers; S2, placing the laid mixed fibers into a carding machine to card into a fiber web, then treating them by a hydroentanglement method, and then hydroentangled by a high-pressure nozzle to form the fibers, and finally drying them to obtain the first layer of non-woven fabric; S3, preparing a second layer of non-woven fabric by using steps S1 and S2, and keeping the prepared first layer of non-woven fabric and second layer of non-woven fabric for standby use; S4 grinds dried lemon and mint into powder using a grinding device, and sieves them using a sieve, then puts the powder into a mixing container, adds water and mixes into a paste, pours the prepared paste into a mold, and finally puts it into a drying device for drying to obtain air freshener particles with a diameter of 0.5 mm; S5, putting sodium carboxymethyl cellulose into a mixing container, adding water to mix into a solution, then putting the air freshener particles prepared in S4 into the solution for coating treatment, and finally drying in a drying device; S6, evenly distributing the particles prepared in S5 on the first layer of non-woven fabric, and then evenly puncturing holes on the second layer of non-woven fabric by needle punching. After the puncturing is completed, the second layer of non-woven fabric is laid on the first layer of non-woven fabric to cover the particles; S7. Finally, the first layer of non-woven fabric and the second layer of non-woven fabric are fixed together by hot rolling to obtain a functional composite non-woven fabric.

2. The method for preparing a functional composite nonwoven fabric according to claim 1, characterized in that: The raw materials for preparing the functional composite non-woven fabric are as follows: 80-100 parts of polyester fiber, 80-100 parts of glass fiber, 80-100 parts of polyester fiber, 30-50 parts of dried lemon, 20-35 parts of mint, 10-15 parts of methylcellulose sodium salt and 30-35 parts of water.

3. The method for preparing a functional composite nonwoven fabric according to claim 1, characterized in that: The pressure of the water jet in S2 is 20-35 MPa, and the pressure of the water jet from the high-pressure nozzle in S2 is 70-100 MPa.

4. The method for preparing a functional composite nonwoven fabric according to claim 1, characterized in that: The grinding time in S4 is 5 to 10 minutes, the mesh size of the sieve in S4 is 100 to 200 meshes, the temperature of the drying equipment in S4 is 80 to 100° C., and the drying time is 10 to 15 minutes.

5. The method for preparing a functional composite nonwoven fabric according to claim 1, characterized in that: The temperature of the drying equipment in S5 is 50-60° C., and the drying time is 5-10 minutes.

6. The method for preparing a functional composite nonwoven fabric according to claim 1, characterized in that: The puncture hole in S6 has a diameter of 0.08 to 0.1 mm.

7. The method for preparing a functional composite nonwoven fabric according to claim 1, characterized in that: The hot rolling temperature in S7 is 120-200° C., and the hot roller pressure is 0.5-2 MPa.

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