CN115813665A - Preparation process of dry sanitary towel based on high-opening plastic absorption net - Google Patents
Preparation process of dry sanitary towel based on high-opening plastic absorption net Download PDFInfo
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Abstract
The invention discloses a preparation process of a dry sanitary towel based on a high-opening plastic-absorbing net, belonging to the technical field of sanitary towel preparation, and the preparation process comprises the following steps: mixing the raw materials, and then punching and cutting to prepare a plastic absorbing net; s2, preparing an anion layer: immersing the non-woven fabric in the mixed solution, taking out and drying to obtain an anion layer; s3, preparing a wrapping layer: bonding fine cotton yarns with the warp and weft density of 80-90 with a PE film to form an outer layer, and taking pure cotton spunlace non-woven fabric as an inner layer; s4, preparing a finished product: the anti-wrinkle sanitary towel has the advantages that the anti-wrinkle layer is laid above the outer layer, the water absorbing filler is laid above the anti-wrinkle layer, the inner layer is laid above the water absorbing filler, and then the whole body is rolled and cut to obtain the sanitary towel.
Description
Technical Field
The invention relates to the technical field of sanitary towel preparation, in particular to a preparation process of a dry sanitary towel based on a high-opening plastic absorption net.
Background
A sanitary towel (sanitry towel) is a sanitary article used in menstrual period of women, the main material is cotton, non-woven fabric, paper pulp or high molecular polymer and high molecular polymer composite paper formed by the above materials, the design of the side edge is mainly used for preventing side leakage, and the sanitary towel is divided into three layers of surface layer, absorption core and bottom layer from inside to outside. Other common menstrual products include tampons, menstrual cups, pantiliners, and the like. When selecting sanitary napkins, attention should be paid to the material composition, hygiene standards and the actual condition of the napkin. When the sanitary towel is used, the storage condition, the use hygiene and the replacement frequency are required to be noticed, otherwise, gynecological diseases are easily caused. As a product used in menstrual period, the sanitary towel has been subjected to a plurality of social stigma, and the situations of poor menstruation (namely, the sanitary towel and other products are difficult to obtain) and photophobia of the menstrual period and the like widely exist in a plurality of countries and regions all over the world, so that the problems of education opportunities and life situations of women are caused.
The sanitary towel mainly comprises a surface layer, an absorption core and a bottom layer, wherein materials of all layers are bonded by hot melt adhesive. The outermost layer (i.e. the bottom layer) is non-woven fabric and is soft. Inward is a layer of leak-proof film (composed of waterproof paper or polyethylene film). Then the fluff pulp which is wrapped by toilet paper and is mixed with the high molecular water absorbent is arranged inwards to form a strong absorber, once the menstrual blood permeates into the absorber, the menstrual blood can be firmly attached and can not be reversely or scattered. The back of the sanitary towel is also provided with a pressure-sensitive adhesive tape (non-setting adhesive) which is lined with release paper. When in use, the release paper is only needed to be torn off and thrown away, and then the adhesive tape is stuck on the underpants to prevent slipping.
Most of sanitary towels on the market have poor crease-resistant effect, poor antibacterial effect and poor odor adsorption effect, and because the poor crease-resistant effect can not only reduce the water absorption of the sanitary towels, but also can cause side leakage.
Disclosure of Invention
In order to solve the technical problems, the invention provides a preparation process of a dry sanitary towel based on a high-opening plastic absorption net.
The technical scheme of the invention is as follows: a preparation process of a dry sanitary towel based on a high-opening plastic absorption net comprises the following steps:
s1, preparing a plastic suction net:
s1-1, preparing materials:
the formula comprises the following components in parts by weight: 60-70 parts of pbs resin, 15-20 parts of graphene composite modified starch, 18-25 parts of nano inorganic filler, 0.3-0.6 part of antioxidant, 1-2 parts of lubricant and 0.6-1.2 parts of titanate coupling agent;
s1-2, mixing materials:
respectively drying the pbs resin, the graphene composite modified starch, the nano inorganic filler, the antioxidant, the lubricant and the titanate coupling agent which are prepared in the step S1-1 at the drying temperature of 70-80 ℃ for 30-35min, adding all the ingredients into a mixer for mixing after drying is finished, wherein the rotating speed of the mixer is 80-120r/min, the mixing time is 20-30min, and obtaining a mixture after mixing is finished;
s1-3, molding:
adding the mixture into an extruder for melt extrusion to obtain a sheet, then making the sheet into a sheet by a plastic uptake machine, cutting the sheet into rectangular sheets with the width of 3cm and the length of 10cm, cutting four corners of each rectangular sheet into arc angles, wherein the radius of a circle corresponding to each arc angle is 5cm, then stamping and cutting the rectangular sheets, and making the rectangular sheets into a plastic uptake net containing rhombic meshes;
s2, preparing an anion layer:
mixing nano tourmaline powder, tourmaline powder and water according to a mass ratio of 1:1:8, mixing and stirring to prepare a mixed solution, immersing the non-woven fabric in the mixed solution for 10-20min, taking out the non-woven fabric after immersion is finished, and drying to obtain an anion layer;
s3, preparing a wrapping layer:
bonding fine cotton yarns with the warp and weft density of 80-90 with a PE film to form an outer layer, and taking pure cotton spunlace non-woven fabric as an inner layer;
s4, preparing a finished product:
adhering an anion layer to the bottom of a plastic suction net to form an anti-wrinkle layer, drying cotton in an aseptic environment after cleaning, carbonizing under the protection of nitrogen to obtain cotton carbon fibers, mixing the cotton carbon fibers with the bamboo carbon fibers to obtain a water-absorbing filler, paving the anti-wrinkle layer above an outer layer, paving the water-absorbing filler above the anti-wrinkle layer, paving an inner layer above the water-absorbing filler, rolling and cutting the whole body, and adhering a pressure-sensitive adhesive tape to the outer side of the outer layer after edge wrapping treatment after cutting is finished, thereby obtaining the finished sanitary towel.
Further, the aperture of the rhombic holes of the plastic suction net in the step S1-3 is 0.5x1mm, and the density of the rhombic holes is 40-50/cm 2 The plastic uptake net has crease-resistant effect when being added into the sanitary towel, and can not cause discomfort.
Furthermore, the edge covering treatment in the step S4 is to wrap the PE film on the outer side of the cut sanitary towel through a hot-press bonding process, the edge covering width is 1-2cm, and the PE film is used as an edge covering material and can effectively prevent menstrual blood in the sanitary towel from leaking due to extrusion.
Further, in the step S4, the thickness of the plastic suction net is 0.5-1mm, the thickness of the outer layer is 0.8-1.2mm, the thickness of the inner layer is 1-1.5mm, the thickness of the water absorption filler is 2.5-3mm, the thickness of the anion layer is 1-1.3mm, and the overall thickness of the sanitary towel is proper, so that discomfort cannot be caused.
Furthermore, the pure cotton spunlace nonwoven fabric needs to be subjected to antibacterial treatment, the antibacterial treatment is to soak the pure cotton spunlace nonwoven fabric in an antibacterial solution for 30-50min, and then the pure cotton spunlace nonwoven fabric is dried, wherein the drying temperature is 60-80 ℃, the water content of the dried pure cotton spunlace nonwoven fabric is 3-5%, and the dried pure cotton spunlace nonwoven fabric is in contact with female private parts, so that the bacterial breeding can be effectively inhibited.
Further, the antibacterial liquid comprises the following components in parts by weight: 5-10 parts of glycerin, 1-5 parts of menthol, 3-6 parts of alum, 1.2-3.5 parts of honeysuckle stem extract, 4.2-5.5 parts of folium artemisiae argyi extract, 6.7-7.6 parts of cyperus rotundus extract and 20-30 parts of deionized water.
Further, in the step S4, the carbon fiber and the bamboo charcoal fiber are mixed according to the mass ratio of 2:1, the water absorption filler obtained after cotton mixing has strong water absorption.
Further, in the step S4, the carbonization temperature for carbonizing the cotton is 170-190 ℃, the carbonization time is 50-80min, the carbonization effect is good at the temperature, and the carbonized cotton fiber and the bamboo charcoal fiber have the function of absorbing peculiar smell after being mixed.
Further, in the step S1, the graphene composite modified starch is prepared by mixing graphene, maleic anhydride and starch slurry in a mass ratio of 0.5:0.3:5, moderating, mixing for 30-40min at a stirring speed of 900-1000r/min, then placing the mixed solution in plasma treatment equipment for plasma treatment for 40-60s, and then drying, grinding and sieving to obtain the graphene composite modified starch with the granularity of 30-50 mu m.
Furthermore, the nano inorganic filler in the step S1 is light calcium carbonate powder with the granularity of 40-80nm, and the prepared plastic suction net is easy to degrade and cannot cause ecological pollution.
The invention has the beneficial effects that:
(1) The plastic absorption net is arranged in the sanitary towel, and the sanitary towel is supported by the plastic absorption net, so that wrinkles can be effectively prevented when the sanitary towel is reused, the water absorption of the sanitary towel is further reduced, and the leakage of the sanitary towel caused by the wrinkles can also be prevented.
(2) The sanitary towel can effectively absorb menstrual blood, has a quick absorption effect, can effectively keep private parts of women dry and breathable, has the effects of resisting bacteria and adsorbing peculiar smell, and has a better use effect.
Drawings
FIG. 1 is a flow chart of the present invention.
Detailed Description
Example 1:
as shown in fig. 1, a process for preparing a dry sanitary napkin based on a high open-cell plastic absorbing net comprises the following steps:
s1, preparing a plastic suction net:
s1-1, preparing materials:
the formula comprises the following components in parts by weight: 60 parts of pbs resin, 15 parts of graphene composite modified starch, 18 parts of nano inorganic filler, 0.3 part of antioxidant, 1 part of lubricant and 0.6 part of titanate coupling agent;
s1-2, mixing materials:
respectively drying the pbs resin, the graphene composite modified starch, the nano inorganic filler, the antioxidant, the lubricant and the titanate coupling agent which are prepared in the step S1-1 at the drying temperature of 70 ℃ for 30min, adding all the ingredients into a mixer for mixing after drying is finished, wherein the rotating speed of the mixer is 80r/min, the mixing time is 20min, and obtaining a mixture after mixing is finished;
s1-3, molding:
adding the mixture into an extruder for melt extrusion to obtain a sheet, then making the sheet into a sheet by a plastic uptake machine, cutting the sheet into rectangular sheets with the width of 3cm and the length of 10cm, cutting four corners of each rectangular sheet into arc angles, wherein the radius of a circle corresponding to each arc angle is 5cm, then stamping and cutting the rectangular sheets, and making the rectangular sheets into a plastic uptake net containing rhombic meshes;
s2, preparing an anion layer:
mixing nano tourmaline powder, tourmaline powder and water according to a mass ratio of 1:1:8, mixing and stirring to prepare a mixed solution, immersing the non-woven fabric in the mixed solution for 10min, taking out the non-woven fabric after immersion is finished, and drying to obtain an anion layer;
s3, preparing a wrapping layer:
bonding fine cotton yarns with the warp and weft density of 80 with a PE film to form an outer layer, and adopting pure cotton spunlace non-woven fabric as an inner layer;
s4, preparing a finished product:
adhering an anion layer to the bottom of a plastic suction net to form an anti-wrinkle layer, drying cotton in an aseptic environment after cleaning, carbonizing under the protection of nitrogen to obtain cotton carbon fibers, mixing the cotton carbon fibers with the bamboo carbon fibers to obtain a water-absorbing filler, paving the anti-wrinkle layer above an outer layer, paving the water-absorbing filler above the anti-wrinkle layer, paving an inner layer above the water-absorbing filler, rolling and cutting the whole body, and adhering a pressure-sensitive adhesive tape to the outer side of the outer layer after edge wrapping treatment after cutting is finished, thereby obtaining the finished sanitary towel.
In the step S1-3, the aperture of the plastic uptake net rhombic holes is 0.5x1mm, and the density of the rhombic holes is 40/cm 2 The plastic uptake net has the crease-resistant effect when being added into the sanitary towel, and can not cause discomfort.
The edge covering treatment in the step S4 is to wrap the PE film on the outer side of the cut sanitary towel through a hot-press bonding process, the edge covering width is 1cm, and the PE film is used as an edge covering material and can effectively prevent menstrual blood in the sanitary towel from leaking due to extrusion.
In the step S4, the thickness of the plastic suction net is 0.5mm, the thickness of the outer layer is 0.8mm, the thickness of the inner layer is 1mm, the thickness of the water absorption filler is 2.5mm, the thickness of the anion layer is 1mm, and the overall thickness of the sanitary towel is proper, so that discomfort cannot be caused.
The pure cotton spunlace non-woven fabric needs to be subjected to antibacterial treatment, wherein the antibacterial treatment is to soak the pure cotton spunlace non-woven fabric in an antibacterial solution for 30min, then dry the pure cotton spunlace non-woven fabric, the drying temperature is 60 ℃, the water content of the dried pure cotton spunlace non-woven fabric is 3%, the dried pure cotton spunlace non-woven fabric is in contact with female private parts, and bacterial breeding can be effectively inhibited.
The antibacterial liquid comprises the following components in parts by weight: 5 parts of glycerin, 1 part of menthol, 3 parts of alum, 1.2 parts of honeysuckle stem extract, 4.2 parts of folium artemisiae argyi extract, 6.7 parts of cyperus rotundus extract and 20 parts of deionized water.
Step S4, mixing the secondary carbon fibers and the bamboo charcoal fibers according to a mass ratio of 2:1, the water absorption filler obtained after cotton mixing has strong water absorption.
In the step S4, the carbonization temperature for carbonizing the cotton is 170 ℃, the carbonization time is 50min, the carbonization effect is good at the temperature, and the carbonized cotton fiber and the bamboo charcoal fiber have the function of absorbing peculiar smell after being mixed.
In the step S1, the graphene composite modified starch is prepared by mixing graphene, maleic anhydride and starch slurry according to a mass ratio of 0.5:0.3: and 5, moderating, mixing for 30min at a stirring speed of 900r/min, then placing the mixed solution in plasma treatment equipment for plasma treatment for 40s, and then drying, grinding and sieving to obtain the graphene composite modified starch with the granularity of 30-40 mu m.
In the step S1, the nano inorganic filler is light calcium carbonate powder with the granularity of 40-50nm, and the prepared blister net is easy to degrade and cannot cause ecological pollution.
Example 2:
as shown in fig. 1, a process for preparing a dry sanitary napkin based on a high open-cell plastic absorbing net comprises the following steps:
s1, preparing a plastic suction net:
s1-1, preparing materials:
the formula comprises the following components in parts by weight: 65 parts of pbs resin, 18 parts of graphene composite modified starch, 20 parts of nano inorganic filler, 0.4 part of antioxidant, 1.5 parts of lubricant and 0.9 part of titanate coupling agent;
s1-2, mixing materials:
respectively drying the pbs resin, the graphene composite modified starch, the nano inorganic filler, the antioxidant, the lubricant and the titanate coupling agent which are prepared in the step S1-1 at the drying temperature of 75 ℃ for 33min, adding all the ingredients into a mixer for mixing after drying is finished, wherein the rotating speed of the mixer is 100r/min, the mixing time is 25min, and obtaining a mixture after mixing is finished;
s1-3, molding:
adding the mixture into an extruder for melt extrusion to obtain a sheet, then making the sheet into a sheet by a plastic uptake machine, cutting the sheet into rectangular sheets with the width of 3cm and the length of 10cm, cutting four corners of each rectangular sheet into arc angles, wherein the radius of a circle corresponding to each arc angle is 5cm, then stamping and cutting the rectangular sheets, and making the rectangular sheets into a plastic uptake net containing rhombic meshes;
s2, preparing an anion layer:
mixing nano tourmaline powder, tourmaline powder and water according to a mass ratio of 1:1:8, mixing and stirring to prepare a mixed solution, immersing the non-woven fabric in the mixed solution for 15min, taking out the non-woven fabric after immersion is finished, and drying to obtain an anion layer;
s3, preparing a wrapping layer:
bonding fine cotton yarns with warp and weft density of 85 with a PE film to form an outer layer, and adopting pure cotton spunlace non-woven fabric as an inner layer;
s4, preparing a finished product:
adhering an anion layer to the bottom of a plastic suction net to form an anti-wrinkle layer, drying cotton in an aseptic environment after cleaning, carbonizing under the protection of nitrogen to obtain cotton carbon fibers, mixing the cotton carbon fibers with the bamboo carbon fibers to obtain a water-absorbing filler, paving the anti-wrinkle layer above an outer layer, paving the water-absorbing filler above the anti-wrinkle layer, paving an inner layer above the water-absorbing filler, rolling and cutting the whole body, and adhering a pressure-sensitive adhesive tape to the outer side of the outer layer after edge wrapping treatment after cutting is finished, thereby obtaining the finished sanitary towel.
In the step S1-3, the aperture of the plastic uptake mesh rhombic hole is 0.5x1mm, and the density of the rhombic hole is 45/cm 2 The plastic uptake net has the crease-resistant effect when being added into the sanitary towel, and can not cause discomfort.
The edge covering treatment in the step S4 is to wrap the PE film on the outer side of the cut sanitary towel through a hot-pressing adhesion process, the edge covering width is 1.5cm, and the PE film is used as an edge covering material and can effectively prevent menstrual blood in the sanitary towel from leaking due to extrusion.
In the step S4, the thickness of the plastic suction net is 0.8mm, the thickness of the outer layer is 1mm, the thickness of the inner layer is 1.3mm, the thickness of the water absorption filler is 2.8mm, the thickness of the anion layer is 1.2mm, and the overall thickness of the sanitary towel is proper, so that discomfort cannot be caused.
The pure cotton spunlace non-woven fabric needs to be subjected to antibacterial treatment, the antibacterial treatment is to soak the pure cotton spunlace non-woven fabric in an antibacterial solution for 40min, then the pure cotton spunlace non-woven fabric is dried, the drying temperature is 70 ℃, the water content of the dried pure cotton spunlace non-woven fabric is 4%, the dried pure cotton spunlace non-woven fabric is in contact with female private parts, and bacterial breeding can be effectively inhibited.
The antibacterial liquid comprises the following components in parts by weight: 8 parts of glycerin, 3 parts of menthol, 5 parts of alum, 2.2 parts of honeysuckle stem extract, 5 parts of folium artemisiae argyi extract, 7 parts of cyperus rotundus extract and 25 parts of deionized water.
Step S4, mixing the secondary carbon fibers and the bamboo charcoal fibers according to a mass ratio of 2:1, the water absorption filler obtained after cotton mixing has strong water absorption.
In the step S4, the carbonization temperature for carbonizing the cotton is 180 ℃, the carbonization time is 60min, the carbonization effect is good at the temperature, and the carbonized cotton fiber and the bamboo charcoal fiber have the function of absorbing peculiar smell after being mixed.
In the step S1, the graphene composite modified starch is prepared by mixing graphene, maleic anhydride and starch slurry according to a mass ratio of 0.5:0.3: and 5, moderating, mixing for 35min at a stirring speed of 950r/min, then placing the mixed solution in plasma treatment equipment for plasma treatment for 50s, and then drying, grinding and sieving to obtain the graphene composite modified starch with the particle size of 40 mu m.
In the step S1, the nano inorganic filler is light calcium carbonate powder with the granularity of 60nm, and the prepared blister net is easy to degrade and cannot cause ecological pollution.
Example 3:
as shown in fig. 1, a process for preparing a dry sanitary napkin based on a high open-cell plastic absorbing net comprises the following steps:
s1, preparing a plastic suction net:
s1-1, preparing materials:
the formula comprises the following components in parts by weight: 70 parts of pbs resin, 20 parts of graphene composite modified starch, 25 parts of nano inorganic filler, 0.6 part of antioxidant, 2 parts of lubricant and 1.2 parts of titanate coupling agent;
s1-2, mixing materials:
respectively drying the pbs resin, the graphene composite modified starch, the nano inorganic filler, the antioxidant, the lubricant and the titanate coupling agent which are prepared in the step S1-1 at the drying temperature of 80 ℃ for 35min, adding all the ingredients into a mixer for mixing after drying is finished, wherein the rotation speed of the mixer is 120r/min, the mixing time is 30min, and obtaining a mixture after mixing is finished;
s1-3, molding:
adding the mixture into an extruder for melt extrusion to obtain a sheet, then making the sheet into a sheet by a plastic uptake machine, cutting the sheet into rectangular sheets with the width of 3cm and the length of 10cm, cutting four corners of each rectangular sheet into arc angles, wherein the radius of a circle corresponding to each arc angle is 5cm, then stamping and cutting the rectangular sheets, and making the rectangular sheets into a plastic uptake net containing rhombic meshes;
s2, preparing an anion layer:
mixing nano tourmaline powder, tourmaline powder and water according to a mass ratio of 1:1:8, mixing and stirring to prepare a mixed solution, immersing the non-woven fabric in the mixed solution for 20min, taking out the non-woven fabric after immersion is finished, and drying to obtain an anion layer;
s3, preparing a wrapping layer:
bonding fine cotton yarns with warp and weft density of 90 with a PE film to form an outer layer, and adopting pure cotton spunlace non-woven fabric as an inner layer;
s4, preparing a finished product:
adhering an anion layer to the bottom of a plastic suction net to form an anti-wrinkle layer, drying cotton in an aseptic environment after cleaning, carbonizing under the protection of nitrogen to obtain cotton carbon fibers, mixing the cotton carbon fibers with the bamboo carbon fibers to obtain a water-absorbing filler, paving the anti-wrinkle layer above an outer layer, paving the water-absorbing filler above the anti-wrinkle layer, paving an inner layer above the water-absorbing filler, rolling and cutting the whole body, and adhering a pressure-sensitive adhesive tape to the outer side of the outer layer after edge wrapping treatment after cutting is finished, thereby obtaining the finished sanitary towel.
In the step S1-3, the aperture of the plastic uptake net rhombic hole is 0.5x1mm, and the density of the rhombic hole is 50/cm 2 The plastic uptake net has the crease-resistant effect when being added into the sanitary towel, and can not cause discomfort.
The edge covering treatment in the step S4 is to wrap the PE film on the outer side of the cut sanitary towel through a hot-press bonding process, the width of the edge covering is 2cm, and the PE film is used as an edge covering material and can effectively prevent menstrual blood in the sanitary towel from leaking due to extrusion.
In the step S4, the thickness of the plastic suction net is 1mm, the thickness of the outer layer is 1.2mm, the thickness of the inner layer is 1.5mm, the thickness of the water absorption filler is 3mm, the thickness of the anion layer is 1.3mm, and the overall thickness of the sanitary towel is proper and does not cause discomfort.
The pure cotton spunlace non-woven fabric needs to be subjected to antibacterial treatment, the antibacterial treatment is to soak the pure cotton spunlace non-woven fabric in an antibacterial solution for 50min, then the pure cotton spunlace non-woven fabric is dried, the drying temperature is 80 ℃, the water content of the dried pure cotton spunlace non-woven fabric is 5%, the dried pure cotton spunlace non-woven fabric is in contact with female private parts, and bacterial breeding can be effectively inhibited.
The antibacterial liquid comprises the following components in parts by weight: 10 parts of glycerin, 5 parts of menthol, 6 parts of alum, 3.5 parts of honeysuckle stem extract, 5.5 parts of folium artemisiae argyi extract, 7.6 parts of cyperus rotundus extract and 30 parts of deionized water, and the antibacterial liquid has a good antibacterial effect.
Step S4, mixing the medium carbon fiber and the bamboo charcoal fiber according to the mass ratio of 2:1, the water absorption filler obtained after cotton mixing has strong water absorption.
In the step S4, the carbonization temperature for carbonizing the cotton is 190 ℃, the carbonization time is 80min, the carbonization effect is good at the temperature, and the carbonized cotton fiber and the bamboo charcoal fiber have the function of absorbing peculiar smell after being mixed.
In the step S1, the graphene composite modified starch is prepared by mixing graphene, maleic anhydride and starch slurry according to a mass ratio of 0.5:0.3: and 5, moderating, mixing for 40min at a stirring speed of 1000r/min, then placing the mixed solution in plasma treatment equipment for plasma treatment for 60s, and then drying, grinding and sieving to obtain the graphene composite modified starch with the granularity of 50 microns.
In the step S1, the nano inorganic filler is light calcium carbonate powder with the granularity of 80nm, and the prepared blister net is easy to degrade and cannot cause ecological pollution.
Comparative examples 1 to 3, example 3 produced a sanitary napkin having the best use effect, the highest water absorption, the dry feeling, and no discomfort, and thus example 3 was the best example.
Claims (10)
1. A preparation process of a dry sanitary towel based on a high-opening plastic absorption net is characterized by comprising the following steps:
s1, preparing a plastic suction net:
s1-1, preparing materials:
the formula comprises the following components in parts by weight: 60-70 parts of pbs resin, 15-20 parts of graphene composite modified starch, 18-25 parts of nano inorganic filler, 0.3-0.6 part of antioxidant, 1-2 parts of lubricant and 0.6-1.2 parts of titanate coupling agent;
s1-2, mixing materials:
respectively drying the pbs resin, the graphene composite modified starch, the nano inorganic filler, the antioxidant, the lubricant and the titanate coupling agent which are prepared in the step S1-1 at the drying temperature of 70-80 ℃ for 30-35min, adding all the ingredients into a mixer for mixing after drying is finished, wherein the rotating speed of the mixer is 80-120r/min, the mixing time is 20-30min, and obtaining a mixture after mixing is finished;
s1-3, molding:
adding the mixture into an extruder for melt extrusion to obtain a sheet, then making the sheet into a sheet by a plastic uptake machine, cutting the sheet into rectangular sheets with the width of 3cm and the length of 10cm, cutting four corners of each rectangular sheet into arc angles, wherein the radius of a circle corresponding to each arc angle is 5cm, then stamping and cutting the rectangular sheets, and making the rectangular sheets into a plastic uptake net containing rhombic meshes;
s2, preparing an anion layer:
mixing nano tourmaline powder, tourmaline powder and water according to a mass ratio of 1:1:8, mixing and stirring to prepare a mixed solution, immersing the non-woven fabric in the mixed solution for 10-20min, taking out the non-woven fabric after immersion is finished, and drying to obtain an anion layer;
s3, preparing a wrapping layer:
bonding fine cotton yarns with the warp and weft density of 80-90 with a PE film to form an outer layer, and taking pure cotton spunlace non-woven fabric as an inner layer;
s4, preparing a finished product:
adhering an anion layer to the bottom of a plastic suction net to form an anti-wrinkle layer, drying cotton in an aseptic environment after cleaning, carbonizing under the protection of nitrogen to obtain cotton carbon fibers, mixing the cotton carbon fibers with the bamboo carbon fibers to obtain a water-absorbing filler, paving the anti-wrinkle layer above an outer layer, paving the water-absorbing filler above the anti-wrinkle layer, paving an inner layer above the water-absorbing filler, rolling and cutting the whole body, and adhering a pressure-sensitive adhesive tape to the outer side of the outer layer after edge wrapping treatment after cutting is finished, thereby obtaining the finished sanitary towel.
2. The process for preparing a dry sanitary napkin based on a high open-cell plastic uptake net according to claim 1, wherein the pore diameter of the diamond-shaped pores of the plastic uptake net in the step S1-3 is 0.5x1mm, and the density of the diamond-shaped pores is 40-50/cm 2 。
3. The process for preparing a dry sanitary napkin based on a highly open absorbent web as claimed in claim 1, wherein the edge-covering process in step S4 is to wrap the cut sanitary napkin with PE film by a hot-press bonding process, and the width of the edge-covering is 1-2cm.
4. The process for preparing a dry sanitary napkin based on a high open-cell plastic-absorbing net according to claim 1, wherein in step S4, the thickness of the plastic-absorbing net is 0.5-1mm, the thickness of the outer layer is 0.8-1.2mm, the thickness of the inner layer is 1-1.5mm, the thickness of the water-absorbing filler is 2.5-3mm, and the thickness of the anion layer is 1-1.3mm.
5. The process for preparing the dry sanitary napkin based on the highly open absorbent web according to claim 1, wherein the pure cotton spunlace nonwoven fabric is subjected to an antibacterial treatment, wherein the antibacterial treatment is to soak the pure cotton spunlace nonwoven fabric in an antibacterial solution for 30-50min, and then the pure cotton spunlace nonwoven fabric is dried, wherein the drying temperature is 60-80 ℃, and the water content of the dried pure cotton spunlace nonwoven fabric is 3-5%.
6. The preparation process of the dry sanitary towel based on the high-opening plastic absorption net according to claim 5, wherein the antibacterial liquid consists of the following components in parts by weight: 5-10 parts of glycerol, 1-5 parts of menthol, 3-6 parts of alum, 1.2-3.5 parts of honeysuckle stem extract, 4.2-5.5 parts of folium artemisiae argyi extract, 6.7-7.6 parts of cyperus rotundus extract and 20-30 parts of deionized water.
7. The preparation process of the dry sanitary napkin based on the high open-pore plastic absorption net according to claim 1, wherein in the step S4, the mass ratio of the surface carbon fiber to the bamboo charcoal fiber is 2:1, cotton blending.
8. The process for preparing the dry sanitary napkin based on the high open-cell plastic absorbent web according to claim 1, wherein the carbonization temperature for carbonizing the cotton in the step S4 is 170-190 ℃, and the carbonization time is 50-80min.
9. The process for preparing the dry and comfortable sanitary napkin based on the high-open-pore plastic absorption net according to claim 1, wherein the graphene composite modified starch in the step S1 is prepared by mixing graphene, maleic anhydride and starch slurry according to a mass ratio of 0.5:0.3: and 5, moderating, mixing for 30-40min at a stirring speed of 900-1000r/min, then placing the mixed solution in plasma treatment equipment for plasma treatment for 40-60s, and then drying, grinding and sieving to obtain the graphene composite modified starch with the granularity of 30-50 mu m.
10. The process for preparing a dry sanitary napkin based on a high open-cell plastic absorbent web according to claim 1, wherein the nano inorganic filler in step S1 is light calcium carbonate powder with a particle size of 40-80 nm.
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