CN112426272A - Anti-overflow dry breast pad - Google Patents
Anti-overflow dry breast pad Download PDFInfo
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- CN112426272A CN112426272A CN202110001059.2A CN202110001059A CN112426272A CN 112426272 A CN112426272 A CN 112426272A CN 202110001059 A CN202110001059 A CN 202110001059A CN 112426272 A CN112426272 A CN 112426272A
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/14—Bandages or dressings; Absorbent pads specially adapted for the breast or abdomen
- A61F13/141—Milk breast pads
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Abstract
The utility model provides a dry comfortable breast pad of anti-overflow, includes the dry comfortable functional layer of anti-overflow, and the dry comfortable functional layer of anti-overflow includes the anti-overflow layer of being connected with the surface course in proper order and the layer that absorbs water of being connected with the basement membrane, the anti-overflow layer include with the waterproof bottom, the setting of seted up the trompil that the layer is connected absorbs water is connected waterproof bottom is kept away from absorb water the basic unit on a side surface of layer and with the hydrophobic layer that the basic unit is connected. The anti-overflow layer is arranged between the surface layer of the breast pad and the absorption layer, and the anti-overflow layer structure not only has the function of guiding breast milk into the absorption layer more quickly, but also solves the problem of excessive breast milk exudation, so that the surface layer of the breast pad is always dry and comfortable in the using process.
Description
Technical Field
The invention belongs to the technical field of hygienic products, and particularly relates to an anti-overflow dry breast pad.
Background
The breast pad is an article for preventing breast from permeating during lactation, and can absorb and lock breast milk, thereby keeping the bra dry and comfortable and avoiding unnecessary embarrassment. The disposable galactorrhea pad in the prior art adopts the combination of an anti-skid film layer, a breathable waterproof outer layer, a water locking layer and a lining.
For example, the file with the application number of CN202999323U comprises a hydrophilic non-woven fabric, a waterproof bottom film and an absorber, wherein two ends of a crack formed by folding are fixed by embossing and hot sealing, and rubber bands are respectively arranged in the middle of a semicircle formed by folding and are fixed by rubber sections, so that the breast pad is in a three-dimensional shape which is easier to fit. The periphery of the center of the breast pad is provided with a fixed diversion embossing. On the production line for producing the breast pad, the rubber band is continuous and is in a stretched state; in the breast pad, after the middle section of the rubber band is fixed by the rubber band, the rubber band is cut off at the edge of the breast pad, at the moment, the left and right rubber band sections which are not fixed by the rubber band section shrink towards the middle, and linear openings are formed at the original positions of the left and right rubber band sections. However, if the water absorbing layer is saturated when the user encounters excessive liquid during use, the liquid and the polymer water absorbing powder in the water absorbing layer will overflow along the straight line opening and contaminate the clothes and skin of the user. The nipple of the pregnant woman may be contaminated by the polymer absorbent powder, which may harm the infant.
Disclosure of Invention
In view of the above problems, an object of the present invention is to provide an anti-overflow dry nursing pad, in which an anti-overflow layer is disposed between a surface layer and an absorption layer of the nursing pad, and the anti-overflow layer structure not only has a function of guiding breast milk into the absorption layer more quickly, but also solves the problem of excessive breast milk exudation, so that the surface layer of the nursing pad is always dry during use.
In order to achieve the purpose, the technical scheme of the invention is as follows:
the utility model provides a dry comfortable breast pad of anti-overflow, includes the dry comfortable functional layer of anti-overflow, and the dry comfortable functional layer of anti-overflow includes the anti-overflow layer of being connected with the surface course in proper order and the layer that absorbs water of being connected with the basement membrane, the anti-overflow layer include with the waterproof bottom, the setting of seted up the trompil that the layer is connected absorbs water is connected waterproof bottom is kept away from absorb water the basic unit on a side surface of layer and with the hydrophobic layer that the basic unit is connected.
Preferably, the projection area of the base layer is smaller than or equal to the projection area of the hydrophobic layer, the upper end surfaces of the pillars formed by connecting the base layer and the hydrophobic layer are arc-shaped, and the distance between two adjacent pillars is larger than or equal to the diameter of the opening.
In this scheme design, the trompil on the waterproof bottom and two cylinders at the symmetric distribution at every trompil both ends have formed the "guide channel" that the layer that absorbs water that guides breast milk to get into the lower extreme to the layer that absorbs water that will adsorb breast milk is separated with the surface course that contacts with the skin, can keep the dry and comfortable on surface course surface. Simultaneously, because the cylinder comprises basic unit, and with the hydrophobic layer of basic unit connection: under the saturated condition of layer absorption breast milk that absorbs water, the breast milk that oozes from saturated layer surface can only ooze the surface course through "guide channel" under the separation of waterproof bottom, and the design of basic unit can guarantee that the breast milk that oozes from "guide channel" anti-is earlier by the absorption of the basic unit that has the adsorption function equally, though the volume of cylinder is less, because the quantity of cylinder is more, therefore the absorptive accumulation breast milk volume of the basic unit of all cylinders is just considerable. The design of hydrophobic layer can guarantee that breast milk contacts with the hydrophobic layer of upper end earlier through "guide channel" when the layer that absorbs water is unsaturated and because the hydrophobic characteristic and the curved surface on hydrophobic layer surface make breast milk be difficult for the adhesion, the landing gets into the layer that absorbs water through "guide channel" rapidly, reduces the contact with the basic unit, avoids the basic unit just with the breast milk contact and the absorption that passes through the surface course before the absorption back oozes breast milk, has lost the effect of anti-overflow.
As a further preference of the present invention, the hydrophobic layer is prepared from a low density polyethylene-modified cellulose material.
As a further preferred of the present invention, the method for preparing the low density polyethylene material-modified cellulose material comprises: the method comprises the following steps: carrying out solid phase grafting on microcrystalline cellulose by adopting maleic anhydride to obtain modified cellulose; step two: blending and granulating the modified cellulose and low-density polyethylene; step three: and (4) performing hydrophobic modification on the mixed material prepared in the step two to obtain the low-density polyethylene-modified cellulose material.
In the design of the scheme, the low-density polyethylene serving as a main material is a commonly used material with excellent comprehensive performance at present, and the low-density polyethylene is blended with the modified cellulose to endow the material with the hydrophobic characteristic: the modified cellulose is obtained by performing high-strength mechanical treatment on natural fibers, and the surface of the cellulose contains a plurality of hydroxyl groups, so that the hydrophobic effect can be achieved by modifying the cellulose, the polarity of the cellulose can be reduced while the hydrophobic effect is achieved, the compatibility of the modified cellulose and low-density polyethylene is improved, and the low-density polyethylene-modified cellulose material required by the scheme is obtained.
In a further preferred embodiment of the present invention, in the first step, the mass ratio of the maleic anhydride to the cellulose is 3.5 to 5:1, and the solid phase grafting is performed under the conditions of an initiator and sealing.
In a further preferable aspect of the present invention, in the second step, the low-density polyethylene and the modified cellulose are blended and granulated by a screw extruder, and the mass ratio of the low-density polyethylene to the modified cellulose is 1:1 to 10.
As a further preferred aspect of the present invention, the modifying agent for hydrophobically modifying the mixed material in the third step is a silane solution or a nanosilicon dioxide solution.
In the design of the scheme, because a large number of active substituent groups exist in cellulose molecules on the surface of the cellulose, a five-membered ring is opened in the grafting process of maleic anhydride, and two end groups with reaction activity can be grafted on the surface of the cellulose, so that the surface of the cellulose grafted by the maleic anhydride becomes rough and is bonded, and the cellulose has a micro-nano rough structure preliminarily, and has hydrophobic performance; meanwhile, the diameter of the material is increased, so that the number of active points is greatly increased, and a foundation is provided for further modifying the micro-nano rough structure formed on the surface with low surface energy substances (silane solution or nano silicon dioxide solution is selected in the scheme).
In a further preferred embodiment of the present invention, the base layer is made of an interpenetrating network hydrogel material obtained by reacting a first reaction solution containing a polyvinyl alcohol group with a second reaction solution containing acrylamide under the condition of an initiator.
In a further preferred embodiment of the present invention, the first reaction liquid containing a polyvinyl alcohol group and the second reaction liquid containing acrylamide are mixed and reacted at 40 to 50 ℃ and then subjected to a freeze-thaw cycle, wherein the number of cycles is not less than two.
As a further preferred of the present invention, the initiator is one or more of ammonium persulfate, azobisisobutyronitrile and dibenzoyl peroxide.
In this scheme design, the inventor utilizes polyvinyl alcohol group and acrylamide as raw materials and control condition formation ternary porous interpenetrating network structure, its advantage lies in, the porous interpenetrating network structure who forms not only has the super absorbent polymer, and form a network structure of network interlocking, and pore diameter distribution in the network structure is between 10~200 microns, consequently, the rate of absorbing water is very fast, simultaneously because the mechanical properties of network interlocking structure is good, the aquogel material that forms still has elastic buffer capacity on the basis of absorbing water as the basic unit of this scheme, consequently though add one deck anti-overflow layer, nevertheless because the anti-overflow layer wholly has buffer capacity and can not make the user feel uncomfortable.
In conclusion, the invention has the following beneficial effects:
the anti-overflow layer is arranged between the surface layer of the breast pad and the absorption layer, and the anti-overflow layer structure not only has the function of guiding breast milk into the absorption layer more quickly, but also solves the problem of excessive breast milk exudation, so that the surface layer of the breast pad is always dry and comfortable in the using process.
In the design of the anti-overflow layer, the openings on the waterproof bottom layer and the two cylinders symmetrically distributed at the two ends of each opening form a 'guide channel' for guiding breast milk to enter the water absorption layer at the lower end, and the water absorption layer for absorbing the breast milk is separated from the surface layer contacted with the skin, so that the surface of the surface layer can be kept dry and comfortable. Meanwhile, the formed cylinder body absorbs the breast milk to be saturated in the water absorbing layer, the breast milk seeped out from the surface of the saturated water absorbing layer seeps out through the guide channel, and the base layer absorbs the breast milk reversely seeped from the guide channel; the design of the hydrophobic layer can ensure that the breast milk firstly contacts with the hydrophobic layer at the upper end, and the breast milk is not easy to adhere due to the hydrophobic property of the surface of the hydrophobic layer and the arc-shaped surface and quickly slides down to enter the water absorbing layer through the 'guide channel'; therefore, the anti-overflow layer has a good anti-overflow effect.
The invention also provides a preparation method of the hydrophobic layer modified material and the base material, and the obtained material meets the design requirement of the invention, and the preparation process is simple and easy to implement.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic structural view of the present invention when folded.
FIG. 3 is a schematic structural diagram of the material of the present invention.
Fig. 4 is a schematic structural diagram of the anti-overflow layer of the present invention.
FIG. 5 is a scanning electron micrograph of modified cellulose according to example 1.
FIG. 6 is a scanning electron micrograph of fine particles of example 1.
Description of the drawings: 1 surface course, 2 surface courses spout glue in succession, 3 go up toilet paper, 4 go up toilet paper and spout glue in succession, 5 anti-overflow layers, 50 waterproof bottom layers, 51 trompil, 52 basic unit, 53 hydrophobic layer, 6 anti-overflow layers spout glue in succession, 7 absorb water layer, 8 basement membrane spout glue in succession, 9 basement membranes, 10 from the intermittent frictioning of type paper, 11 from type paper, 20 top layers, 21 anti-overflow dry and comfortable functional layer, 22 openings, 23 elastic zone.
Detailed Description
Example 1
Firstly, preparation of anti-overflow layer
(1) Preparation of the base layer
Dissolving polyvinyl alcohol in deionized water at 90 ℃ to obtain a 10% polyvinyl alcohol aqueous solution, cooling to 55 ℃, mixing the PVA aqueous solution with a 10% acrylamide monomer aqueous solution under the condition that the ratio of ammonium persulfate to azobisisobutyronitrile is 1:3, wherein the total initiator concentration is 0.1% by weight of AAM monomer, the dropping speed is 1ml/min, heating to 60 ℃ for prepolymerization, carrying out heat preservation reaction for about 2 hours, cooling to room temperature, quickly pouring into a mold, then placing at-17 ℃ for freezing for 12 hours, thawing for 8 hours, and carrying out freezing-thawing cycle for three times; soaking the substrate in methanol for 30min, soaking the substrate in sufficient deionized water for 4h, and then placing the substrate in a drying oven at the constant temperature of 50-60 ℃ for drying to obtain the substrate.
(2) Preparation of the hydrophobic layer
a. Activating microcrystalline cellulose (MCC, particle size of 250 μm) and N, N-dimethylacetamide (DMAc) at a solid-to-liquid ratio of 1:3 at 150 deg.C under stirring and refluxing for 0.5 h; then adding LiCl, stirring and heating at 70 ℃ until the solution is uniform milky white, and then sealing for 12 hours; finally, pouring the mixture into a mold for molding, washing and drying the mixture at room temperature to obtain a product, mixing the product and Maleic Anhydride (MAH) at the normal temperature according to the mass ratio of 1:4, adding 2% of dibenzoyl peroxide, and carrying out solid phase grafting at the temperature of 80 ℃ for 4 hours; and finally, washing, filtering and drying at room temperature to obtain the modified cellulose, as shown in a scanning electron microscope image of figure 5, the modified cellulose has a rough surface, a large diameter and a porosity of more than 8 percent, and the obtained cellulose is successfully grafted by maleic anhydride and the surface property change is obvious. b. Mixing modified cellulose and linear low-density polyethylene in a mass ratio of 1: 8, uniformly mixing the mixture in a stirrer, and then feeding the mixture into a double-screw extruder to be extruded into strips, wherein the screw is double-thread and has the length of 109.5mm, the diameter of the beginning of the screw is 14mm, the diameter of the tail of the screw is 5mm, the extrusion temperature is 140 ℃, and the rotating speed of the screw is 30r/min, so that the composite blank is obtained. c. Crushing the composite blank into powder, mixing the powder with PVP modified nano copper oxide particles under a sealing condition, feeding the powder and the modified nano copper oxide particles into a double-screw machine for mixing granulation for 3 times, wherein the mass ratio of the powder to the modified nano copper oxide particles is 4:1, the rotating speed of a main screw is 50r/min, the rotating speed of a feed screw is 15r/min, and further preparing to obtain particles about 3 mm. As shown in the figure of a particle scanning electron microscope of figure 6, the surface roughness of the particle is large, the hydrophobic property is favorably formed, a contact angle measuring instrument is used for measuring a static Water Contact Angle (WCA), the average WCA is 147 +/-2 degrees, and the material is proved to have an excellent hydrophobic effect.
(3) Preparation of anti-overflow layer
As shown in fig. 4, the prepared material is connected with a waterproof bottom layer 50 (PE material, thickness 3 mm) having regular openings 51, and the waterproof bottom layer 50, the base layer 52, and the hydrophobic layer 53 are all connected with each other by glue spraying (not shown in the figure).
Second, preparation of anti-overflow dry and comfortable breast pad
As shown in fig. 1 and 3, the whole anti-galactorrhea pad is made by connecting a surface layer 20 and an anti-galactorrhea dry functional layer 21, wherein the anti-galactorrhea dry functional layer 21 has the main structure of a basement membrane 9 (PE material), a basement membrane continuous spray adhesive 8, a water absorbing layer 7 (polymer absorbing core), an anti-galactorrhea layer continuous spray adhesive 6 and an anti-galactorrhea layer 5 in sequence. The main structure of the surface layer 20 is a continuous structure distributed on one side of the anti-overflow layer 5: continuously spraying glue 4 on toilet paper, continuously spraying glue 3 on toilet paper, continuously spraying glue 2 on surface layer, and surface layer 1 (non-woven fabric); continuous structure distributed on one side of the base film 9: 10 pieces of release paper are intermittently scraped, and 11 pieces of release paper are intermittently scraped.
Example 2
Firstly, preparation of anti-overflow layer
(1) Preparation of the base layer
Dissolving polyvinyl alcohol in deionized water at 90 ℃ to obtain a 10% polyvinyl alcohol aqueous solution, cooling to 55 ℃, mixing the PVA aqueous solution with a 10% acrylamide monomer aqueous solution under the condition that the ratio of ammonium persulfate to azobisisobutyronitrile is 1:3, wherein the total initiator concentration is 0.1% by weight of AAM monomer, the dropping speed is 1ml/min, heating to 60 ℃ for prepolymerization, carrying out heat preservation reaction for about 2 hours, cooling to room temperature, quickly pouring into a mold, then placing at-17 ℃ for freezing for 12 hours, thawing for 8 hours, and carrying out freezing-thawing cycle for three times; soaking the substrate in methanol for 30min, soaking the substrate in sufficient deionized water for 4h, and then placing the substrate in a drying oven at the constant temperature of 50-60 ℃ for drying to obtain the substrate.
(2) Preparation of the hydrophobic layer
a. Activating microcrystalline cellulose (MCC, particle size of 250 μm) and N, N-dimethylacetamide (DMAc) at a solid-to-liquid ratio of 1:3 at 150 deg.C under stirring and refluxing for 0.5 h; then adding LiCl, stirring and heating at 70 ℃ until the solution is uniform milky white, and then sealing for 12 hours; finally pouring the mixture into a mold for molding, washing and drying the mixture at room temperature to obtain a product, mixing the product and Maleic Anhydride (MAH) at the normal temperature according to the mass ratio of 1:5, adding 2% of dibenzoyl peroxide, and carrying out solid phase grafting at the temperature of 80 ℃ for 5 hours; and finally, washing, filtering and drying at room temperature to obtain the modified cellulose. b. Mixing modified cellulose and linear low-density polyethylene in a mass ratio of 1: 10, putting the mixture into a stirrer, uniformly mixing the mixture, feeding the mixture into a double-screw extruder, extruding the mixture into strips, wherein the screw has double threads and is 109.5mm long, the diameter of the beginning of the screw is 14mm, the diameter of the tail of the screw is 5mm, the extrusion temperature is 140 ℃, and the rotating speed of the screw is 30r/min, so that the composite blank is obtained. c. Crushing the composite blank into powder, mixing the powder with PVP modified nano copper oxide particles under a sealing condition, feeding the powder and the modified nano copper oxide particles into a double-screw machine for mixing granulation for 3 times, wherein the mass ratio of the powder to the modified nano copper oxide particles is 4:1, the rotating speed of a main screw is 50r/min, the rotating speed of a feed screw is 15r/min, and further preparing to obtain particles about 3 mm.
(3) Preparation of anti-overflow layer
As shown in fig. 4, the prepared material is connected with a waterproof bottom layer 50 (PE material, thickness 3 mm) having regular openings 51, and the waterproof bottom layer 50, the base layer 52, and the hydrophobic layer 53 are all connected with each other by glue spraying (not shown in the figure).
Second, preparation of anti-overflow dry and comfortable breast pad
As shown in fig. 1 and 3, the whole anti-galactorrhea pad is made by connecting a surface layer 20 and an anti-galactorrhea dry functional layer 21, wherein the anti-galactorrhea dry functional layer 21 has the main structure of a basement membrane 9 (PE material), a basement membrane continuous spray adhesive 8, a water absorbing layer 7 (polymer absorbing core), an anti-galactorrhea layer continuous spray adhesive 6 and an anti-galactorrhea layer 5 in sequence. The main structure of the surface layer 20 is a continuous structure distributed on one side of the anti-overflow layer 5: continuously spraying glue 4 on toilet paper, continuously spraying glue 3 on toilet paper, continuously spraying glue 2 on surface layer, and surface layer 1 (non-woven fabric); continuous structure distributed on one side of the base film 9: 10 pieces of release paper are intermittently scraped, and 11 pieces of release paper are intermittently scraped.
Example 3
Firstly, preparation of anti-overflow layer
(1) Preparation of the base layer
Dissolving polyvinyl alcohol in deionized water at 90 ℃ to obtain a 10% polyvinyl alcohol aqueous solution, cooling to 55 ℃, mixing the PVA aqueous solution with a 10% acrylamide monomer aqueous solution under the condition that the ratio of ammonium persulfate to azobisisobutyronitrile is 1:3, wherein the total initiator concentration is 0.1% by weight of AAM monomer, the dropping speed is 1ml/min, heating to 60 ℃ for prepolymerization, carrying out heat preservation reaction for about 2 hours, cooling to room temperature, quickly pouring into a mold, then placing at-17 ℃ for freezing for 12 hours, thawing for 8 hours, and carrying out freezing-thawing cycle for three times; soaking the substrate in methanol for 30min, soaking the substrate in sufficient deionized water for 4h, and then placing the substrate in a drying oven at the constant temperature of 50-60 ℃ for drying to obtain the substrate.
(2) Preparation of the hydrophobic layer
a. Activating microcrystalline cellulose (MCC, particle size of 250 μm) and N, N-dimethylacetamide (DMAc) at a solid-to-liquid ratio of 1:3 at 150 deg.C under stirring and refluxing for 0.5 h; then adding LiCl, stirring and heating at 70 ℃ until the solution is uniform milky white, and then sealing for 12 hours; finally, pouring the mixture into a mold for molding, washing and drying the mixture at room temperature to obtain a product, mixing the product and Maleic Anhydride (MAH) at the normal temperature according to the mass ratio of 1:3.5, adding 5% of dibenzoyl peroxide, and carrying out solid phase grafting at the temperature of 80 ℃ for 4 hours; and finally, washing, filtering and drying at room temperature to obtain the modified cellulose. b. Mixing modified cellulose and linear low-density polyethylene in a mass ratio of 1: 10, putting the mixture into a stirrer, uniformly mixing the mixture, feeding the mixture into a double-screw extruder, extruding the mixture into strips, wherein the screw has double threads and is 109.5mm long, the diameter of the beginning of the screw is 14mm, the diameter of the tail of the screw is 5mm, the extrusion temperature is 140 ℃, and the rotating speed of the screw is 30r/min, so that the composite blank is obtained. c. Crushing the composite blank into powder, and performing silanization modification on the powder by adopting a chemical deposition method (CVD), wherein the silanization modification method specifically comprises the following steps: mixing methyltrimethoxysilane (MTMS) with the powder at a solid-to-liquid ratio of 1:5, reacting at room temperature and 500r/min for 6h, and spray drying to obtain particles of about 1 mm.
(3) Preparation of anti-overflow layer
As shown in fig. 4, the prepared material is connected with a waterproof bottom layer 50 (PE material, thickness 3 mm) having regular openings 51, and the waterproof bottom layer 50, the base layer 52, and the hydrophobic layer 53 are all connected with each other by glue spraying (not shown in the figure).
Second, preparation of anti-overflow dry and comfortable breast pad
As shown in fig. 1 and 3, the whole anti-galactorrhea pad is made by connecting a surface layer 20 and an anti-galactorrhea dry functional layer 21, wherein the anti-galactorrhea dry functional layer 21 has the main structure of a basement membrane 9 (PE material), a basement membrane continuous spray adhesive 8, a water absorbing layer 7 (polymer absorbing core), an anti-galactorrhea layer continuous spray adhesive 6 and an anti-galactorrhea layer 5 in sequence. The main structure of the surface layer 20 is a continuous structure distributed on one side of the anti-overflow layer 5: continuously spraying glue 4 on toilet paper, continuously spraying glue 3 on toilet paper, continuously spraying glue 2 on surface layer, and surface layer 1 (non-woven fabric); continuous structure distributed on one side of the base film 9: 10 pieces of release paper are intermittently scraped, and 11 pieces of release paper are intermittently scraped.
Example 4
Firstly, preparation of anti-overflow layer
(1) Preparation of the base layer
Dissolving polyvinyl alcohol in deionized water at 90 ℃ to obtain a 10% polyvinyl alcohol aqueous solution, cooling to 55 ℃, mixing the PVA aqueous solution with a 10% acrylamide monomer aqueous solution under the condition that the ratio of ammonium persulfate to azobisisobutyronitrile is 1:3, wherein the total initiator concentration is 0.1% by weight of AAM monomer, the dropping speed is 1ml/min, heating to 60 ℃ for prepolymerization, carrying out heat preservation reaction for about 2 hours, cooling to room temperature, quickly pouring into a mold, then placing at-17 ℃ for freezing for 12 hours, thawing for 8 hours, and carrying out freezing-thawing cycle for three times; soaking the substrate in methanol for 30min, soaking the substrate in sufficient deionized water for 4h, and then placing the substrate in a drying oven at the constant temperature of 50-60 ℃ for drying to obtain the substrate.
(2) Preparation of the hydrophobic layer
a. Activating microcrystalline cellulose (MCC, particle size of 250 μm) and N, N-dimethylacetamide (DMAc) at a solid-to-liquid ratio of 1:3 at 150 deg.C under stirring and refluxing for 0.5 h; then adding LiCl, stirring and heating at 70 ℃ until the solution is uniform milky white, and then sealing for 12 hours; finally, pouring the mixture into a mold for molding, washing and drying the mixture at room temperature to obtain a product, mixing the product and Maleic Anhydride (MAH) at the normal temperature according to the mass ratio of 1:3.5, adding 5% of dibenzoyl peroxide, and carrying out solid phase grafting at the temperature of 80 ℃ for 4 hours; and finally, washing, filtering and drying at room temperature to obtain the modified cellulose. b. Mixing modified cellulose and linear low-density polyethylene in a mass ratio of 1: 10, putting the mixture into a stirrer, uniformly mixing the mixture, feeding the mixture into a double-screw extruder, extruding the mixture into strips, wherein the screw has double threads and is 109.5mm long, the diameter of the beginning of the screw is 14mm, the diameter of the tail of the screw is 5mm, the extrusion temperature is 140 ℃, and the rotating speed of the screw is 30r/min, so that the composite blank is obtained. c. Crushing the composite blank into powder, and performing silanization modification on the powder by adopting a chemical deposition method (CVD), wherein the silanization modification method specifically comprises the following steps: mixing Polydimethylsiloxane (PDMS) with the powder at a solid-to-liquid ratio of 1:5, reacting at room temperature and 500r/min for 8h, and spray drying to obtain particles of about 1 mm.
(3) Preparation of anti-overflow layer
As shown in fig. 4, the prepared material is connected with a waterproof bottom layer 50 (PE material, thickness 3 mm) having regular openings 51, and the waterproof bottom layer 50, the base layer 52, and the hydrophobic layer 53 are all connected with each other by glue spraying (not shown in the figure).
Second, preparation of anti-overflow dry and comfortable breast pad
As shown in fig. 1 and 3, the whole anti-galactorrhea pad is made by connecting a surface layer 20 and an anti-galactorrhea dry functional layer 21, wherein the anti-galactorrhea dry functional layer 21 has the main structure of a basement membrane 9 (PE material), a basement membrane continuous spray adhesive 8, a water absorbing layer 7 (polymer absorbing core), an anti-galactorrhea layer continuous spray adhesive 6 and an anti-galactorrhea layer 5 in sequence. The main structure of the surface layer 20 is a continuous structure distributed on one side of the anti-overflow layer 5: continuously spraying glue 4 on toilet paper, continuously spraying glue 3 on toilet paper, continuously spraying glue 2 on surface layer, and surface layer 1 (non-woven fabric); continuous structure distributed on one side of the base film 9: 10 pieces of release paper are intermittently scraped, and 11 pieces of release paper are intermittently scraped.
Example 5
Firstly, preparation of anti-overflow layer
(1) Preparation of the base layer
Dissolving polyvinyl alcohol in deionized water at 90 ℃ to obtain a 10% polyvinyl alcohol aqueous solution, cooling to 55 ℃, mixing the PVA aqueous solution with a 10% acrylamide monomer aqueous solution under the condition that the ratio of ammonium persulfate to azobisisobutyronitrile is 1:3, wherein the total initiator concentration is 0.1% by weight of AAM monomer, the dropping speed is 1ml/min, heating to 60 ℃ for prepolymerization, carrying out heat preservation reaction for about 2 hours, cooling to room temperature, quickly pouring into a mold, then placing at-17 ℃ for freezing for 12 hours, thawing for 8 hours, and carrying out freezing-thawing cycle for three times; soaking the substrate in methanol for 30min, soaking the substrate in sufficient deionized water for 4h, and then placing the substrate in a drying oven at the constant temperature of 50-60 ℃ for drying to obtain the substrate.
(2) Preparation of the hydrophobic layer
a. Activating microcrystalline cellulose (MCC, particle size of 250 μm) and N, N-dimethylacetamide (DMAc) at a solid-to-liquid ratio of 1:3 at 150 deg.C under stirring and refluxing for 0.5 h; then adding LiCl, stirring and heating at 70 ℃ until the solution is uniform milky white, and then sealing for 12 hours; finally, pouring the mixture into a mold for molding, washing and drying the mixture at room temperature to obtain a product, mixing the product and Maleic Anhydride (MAH) at the normal temperature according to the mass ratio of 1:3.5, adding 5% of dibenzoyl peroxide, and carrying out solid phase grafting at the temperature of 80 ℃ for 4 hours; and finally, washing, filtering and drying at room temperature to obtain the modified cellulose. b. Mixing modified cellulose and linear low-density polyethylene in a mass ratio of 1:1, uniformly mixing the mixture in a stirrer, and then feeding the mixture into a double-screw extruder to be extruded into strips, wherein the screw is double-thread and has the length of 109.5mm, the diameter of the beginning of the screw is 14mm, the diameter of the tail of the screw is 5mm, the extrusion temperature is 140 ℃, and the rotating speed of the screw is 30r/min, so that the composite blank is obtained. c. Crushing the composite blank into powder, and performing silanization modification on the powder by adopting a chemical deposition method (CVD), wherein the silanization modification method specifically comprises the following steps: mixing perfluorooctyl triethoxysilane (PFOTES) and the powder at a solid-to-liquid ratio of 1:5, reacting at room temperature and 500r/min for 5h, and spray drying to obtain particles of about 1 mm.
(3) Preparation of anti-overflow layer
As shown in fig. 4, the prepared material is connected with a waterproof bottom layer 50 (PE material, thickness 3 mm) having regular openings 51, and the waterproof bottom layer 50, the base layer 52, and the hydrophobic layer 53 are all connected with each other by glue spraying (not shown in the figure).
Second, preparation of anti-overflow dry and comfortable breast pad
As shown in fig. 1 and 3, the whole anti-galactorrhea pad is made by connecting a surface layer 20 and an anti-galactorrhea dry functional layer 21, wherein the anti-galactorrhea dry functional layer 21 has the main structure of a basement membrane 9 (PE material), a basement membrane continuous spray adhesive 8, a water absorbing layer 7 (polymer absorbing core), an anti-galactorrhea layer continuous spray adhesive 6 and an anti-galactorrhea layer 5 in sequence. The main structure of the surface layer 20 is a continuous structure distributed on one side of the anti-overflow layer 5: continuously spraying glue 4 on toilet paper, continuously spraying glue 3 on toilet paper, continuously spraying glue 2 on surface layer, and surface layer 1 (non-woven fabric); continuous structure distributed on one side of the base film 9: 10 pieces of release paper are intermittently scraped, and 11 pieces of release paper are intermittently scraped.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.
Claims (10)
1. The utility model provides a dry comfortable breast pad of anti-overflow, its characterized in that, includes dry comfortable functional layer of anti-overflow (21), dry comfortable functional layer of anti-overflow (21) include in proper order with anti-overflow layer (5) that surface course (1) are connected and absorb water layer (7) of being connected with basement membrane (9), anti-overflow layer (5) include with absorb water waterproof bottom layer (50), the setting that offer trompil (51) that layer (7) are connected be in waterproof bottom layer (50) are kept away from absorb water layer (7) a plurality of cylinders of formation are connected by basic unit's (52) and hydrophobic layer (53) on the surface.
2. The anti-overflow dry nursing pad according to claim 1, wherein the projected area of the base layer (52) is smaller than or equal to the projected area of the hydrophobic layer (53), the upper end surfaces of the columns formed by connecting the base layer (52) and the hydrophobic layer (53) are arc-shaped, and the distance between two adjacent columns is larger than or equal to the diameter of the opening (51).
3. The anti-spill dry breast pad according to claim 2, wherein the hydrophobic layer (52) is made of a low density polyethylene-modified microcrystalline cellulose material.
4. The anti-spill dry nursing pad according to claim 3, wherein the preparation method of the low density polyethylene material-modified microcrystalline cellulose material comprises:
the method comprises the following steps: carrying out solid phase grafting on microcrystalline cellulose by adopting maleic anhydride to obtain modified microcrystalline cellulose;
step two: blending and granulating the modified microcrystalline cellulose and low-density polyethylene;
step three: and (4) performing hydrophobic modification on the mixed material prepared in the step two to obtain the low-density polyethylene-modified microcrystalline cellulose material.
5. The anti-overflow dry milk pad according to claim 4, wherein in the first step, the mass ratio of the maleic anhydride to the microcrystalline cellulose is 3.5-5: 1, and solid phase grafting is performed under the conditions of an initiator and sealing.
6. The anti-overflow dry milk pad according to claim 5, wherein in the second step, the low density polyethylene and the modified microcrystalline cellulose are blended and granulated by a screw extruder, and the mass ratio of the low density polyethylene to the modified microcrystalline cellulose is 1: 1-10.
7. The anti-overflow dry nursing pad as claimed in claim 6, wherein the modifier for hydrophobically modifying the mixed material in the third step is silane solution or nano silica solution.
8. The anti-overflow dry nursing pad according to claim 2, wherein the base layer (52) is made of an interpenetrating network hydrogel material obtained by reacting a first reaction solution containing polyvinyl alcohol group with a second reaction solution containing acrylamide under the condition of an initiator.
9. The anti-overflow dry milk pad according to claim 8, wherein the first reaction liquid containing polyvinyl alcohol group and the second reaction liquid containing acrylamide are mixed and reacted at 40-50 ℃, and then freezing-thawing cycle is performed, and the cycle number is not less than two.
10. The anti-spill dry breast pad of claim 8, wherein the initiator is one or more of ammonium persulfate, azobisisobutyronitrile, dibenzoyl peroxide.
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| CN202110001059.2A CN112426272A (en) | 2021-01-04 | 2021-01-04 | Anti-overflow dry breast pad |
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| CN202110001059.2A CN112426272A (en) | 2021-01-04 | 2021-01-04 | Anti-overflow dry breast pad |
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Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4717742A (en) * | 1985-05-29 | 1988-01-05 | Beshay Alphons D | Reinforced polymer composites with wood fibers grafted with silanes - grafting of celluloses or lignocelluloses with silanes to reinforce the polymer composites |
| CN103637877A (en) * | 2013-12-25 | 2014-03-19 | 浙江隆泰医疗科技股份有限公司 | Novel foam composite wound dressing |
| CN204192872U (en) * | 2014-10-14 | 2015-03-11 | 杭州可悦卫生用品有限公司 | Leakproof sanitary towl |
| CN205988364U (en) * | 2016-05-16 | 2017-03-01 | 周高东 | 3d nursing pad |
| CN106633111A (en) * | 2017-01-11 | 2017-05-10 | 福州大学 | Method for preparing high-strength polyvinyl alcohol-based dual-network hydrogel |
| CN106667664A (en) * | 2015-11-06 | 2017-05-17 | 常州德利斯护理用品有限公司 | Waterproof anti-galactorrhea pad of absorbent fiber dust-free paper absorbent body |
| CN206317457U (en) * | 2016-10-17 | 2017-07-11 | 广东川田卫生用品有限公司 | A kind of non-woven fabrics |
| US20180119334A1 (en) * | 2015-06-05 | 2018-05-03 | Cornell University | Modified cellulosic compositions having increased hydrophobicity and processes for their production |
| US20180127517A1 (en) * | 2016-11-09 | 2018-05-10 | Petrochina Company Limited | Hydrophobically modified nanocellulose crystal and a method for hydrophobic grafting modification of nanocellulose crystals |
| CN109453003A (en) * | 2018-11-13 | 2019-03-12 | 上海护理佳实业有限公司 | The compound lateral guide layer and preparation method and spill-preventive breast pad of a kind of spill-preventive breast pad |
| CN209019185U (en) * | 2017-11-06 | 2019-06-25 | 苏州康孚智能科技有限公司 | Utilize the absorbent article of close and distant waterpower control liquid directional profile |
| CN210612363U (en) * | 2018-12-10 | 2020-05-26 | 上海丰格无纺布有限公司 | A compound water conservancy diversion layer structure of multilayer for urine trousers |
| US20200247101A1 (en) * | 2018-11-07 | 2020-08-06 | Industrial Technology Research Institute | Bifunctional film and method for preparing the same |
| CN211934542U (en) * | 2019-09-09 | 2020-11-17 | 浙江昱升个人护理用品有限公司 | Fast-absorption anti-galactorrhea pad |
-
2021
- 2021-01-04 CN CN202110001059.2A patent/CN112426272A/en active Pending
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4717742A (en) * | 1985-05-29 | 1988-01-05 | Beshay Alphons D | Reinforced polymer composites with wood fibers grafted with silanes - grafting of celluloses or lignocelluloses with silanes to reinforce the polymer composites |
| CN103637877A (en) * | 2013-12-25 | 2014-03-19 | 浙江隆泰医疗科技股份有限公司 | Novel foam composite wound dressing |
| CN204192872U (en) * | 2014-10-14 | 2015-03-11 | 杭州可悦卫生用品有限公司 | Leakproof sanitary towl |
| US20180119334A1 (en) * | 2015-06-05 | 2018-05-03 | Cornell University | Modified cellulosic compositions having increased hydrophobicity and processes for their production |
| CN106667664A (en) * | 2015-11-06 | 2017-05-17 | 常州德利斯护理用品有限公司 | Waterproof anti-galactorrhea pad of absorbent fiber dust-free paper absorbent body |
| CN205988364U (en) * | 2016-05-16 | 2017-03-01 | 周高东 | 3d nursing pad |
| CN206317457U (en) * | 2016-10-17 | 2017-07-11 | 广东川田卫生用品有限公司 | A kind of non-woven fabrics |
| US20180127517A1 (en) * | 2016-11-09 | 2018-05-10 | Petrochina Company Limited | Hydrophobically modified nanocellulose crystal and a method for hydrophobic grafting modification of nanocellulose crystals |
| CN106633111A (en) * | 2017-01-11 | 2017-05-10 | 福州大学 | Method for preparing high-strength polyvinyl alcohol-based dual-network hydrogel |
| CN209019185U (en) * | 2017-11-06 | 2019-06-25 | 苏州康孚智能科技有限公司 | Utilize the absorbent article of close and distant waterpower control liquid directional profile |
| US20200247101A1 (en) * | 2018-11-07 | 2020-08-06 | Industrial Technology Research Institute | Bifunctional film and method for preparing the same |
| CN109453003A (en) * | 2018-11-13 | 2019-03-12 | 上海护理佳实业有限公司 | The compound lateral guide layer and preparation method and spill-preventive breast pad of a kind of spill-preventive breast pad |
| CN210612363U (en) * | 2018-12-10 | 2020-05-26 | 上海丰格无纺布有限公司 | A compound water conservancy diversion layer structure of multilayer for urine trousers |
| CN211934542U (en) * | 2019-09-09 | 2020-11-17 | 浙江昱升个人护理用品有限公司 | Fast-absorption anti-galactorrhea pad |
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Application publication date: 20210302 |