CN114366448B

CN114366448B - Antibacterial absorptive article and preparation method thereof

Info

Publication number: CN114366448B
Application number: CN202210059731.8A
Authority: CN
Inventors: 荣育凤; 张燕燕; 田春兰; 崔象凯
Original assignee: Nuo Chen Co ltd
Current assignee: Nuo Chen Co ltd
Priority date: 2022-01-19
Filing date: 2022-01-19
Publication date: 2023-03-24
Anticipated expiration: 2042-01-19
Also published as: CN114366448A

Abstract

The invention relates to an antibacterial absorptive article and a preparation method thereof, wherein the antibacterial absorptive article sequentially comprises a surface layer, an absorption core body and a bottom film layer from top to bottom; coconut oil is added to the surface layer; the absorbent core comprises an upper layer absorber and a lower layer absorber; the upper absorber is made of latex material; the lower layer absorber consists of a liquid absorbing material layer and a non-woven fabric layer wrapping the liquid absorbing material layer; the liquid absorbing material layer is formed by alternately arranging a plurality of fluff pulp strip-shaped structures and a plurality of super absorbent resin strip-shaped structures at intervals. The antibacterial absorbent article has the advantages of excellent antibacterial performance, capability of moistening skin, improving dry skin and preventing allergy in the use process of a user, high absorption speed, low reverse osmosis, good dryness, no breakage or lump after absorption and the like.

Description

Antibacterial absorptive article and preparation method thereof

Technical Field

The invention relates to the technical field of sanitary products, in particular to an antibacterial absorbent article and a preparation method thereof.

Background

The disposable absorbing articles in the prior art, such as nursing sanitary articles designed for infants, puerperae, middle-aged and elderly people who suffer from urinary incontinence and paralysis, for example, the top layer material of the disposable absorbing articles is in contact with the skin, and due to the ergonomic structure, the disposable absorbing articles cannot be placed flatly in actual use, so that the absorbing articles deform, the top layer material rubs with the skin of a human body, foreign body sensation is generated, the materials are seriously fluffed, and even allergic conditions are generated.

At present, sanitary articles such as sanitary towels (protection pads), diapers, paper diapers and cleaning cloths have two components: a sanitary product without antibacterial function is prepared from absorbent resin, release paper and dust-free paper as main materials; a sanitary product with antibacterial function is prepared from absorbent resin, release paper, dust-free paper, and antibacterial agent. The existing sanitary products use three main antibacterial agents: silver ion antibacterial agent, chitosan antibacterial agent, and tea tree oil antibacterial agent. However, the silver ion antibacterial agent can damage the mucous membrane tissues of human organs during sterilization, and the silver ions cannot be discharged after being absorbed by the human body and are accumulated to cause pathological changes; the chitosan antibacterial agent has good antibacterial action, is insoluble in water and does not chemically react with body fluid, but the pH value has great influence on the antibacterial action of the chitosan, the solubility and the protonation degree of the chitosan are reduced along with the increase of the pH value, the antibacterial capability is gradually weakened, and the antibacterial performance of the chitosan antibacterial agent is greatly influenced by the pH value; the tea tree oil antibacterial agent has strong sterilizing capability, but the tea tree oil has small molecules, low viscosity, fast dissolution and high volatility, can be volatilized after being dripped on the surface of an object for several hours, does not leave traces and has short antibacterial time.

In conclusion, the development of a new antibacterial and bacteriostatic sanitary product material which is safer, more reliable, milder and has no stimulation to replace silver ion antibacterial agents, chitosan antibacterial agents and tea tree oil antibacterial agents with potential safety hazards and functional defects has been a general call and a desire of users of sanitary products.

In addition, the absorption core body of the existing absorption article needs to be further improved, which mainly shows that the absorption speed is slow, the reverse osmosis is high, the surface dryness is poor, and the absorption core body is easy to break, lump and agglomerate after absorbing liquid.

Disclosure of Invention

The invention provides an antibacterial absorbent article and a preparation method thereof, aiming at solving one or more technical problems of the existing absorbent article. The antibacterial absorbent article has the advantages of being excellent in antibacterial performance, capable of moistening skin, improving dry skin and preventing allergy of a user in the using process, high in absorption speed, low in reverse osmosis, good in dryness, free of breakage and lump after being absorbed and the like.

The invention provides an antibacterial absorbent article, which comprises a surface layer, an absorbent core and a bottom film layer from top to bottom in sequence; coconut oil is added to the surface layer; the absorbent core comprises an upper layer absorber and a lower layer absorber; the upper absorber is made of latex material; the lower layer absorber consists of a liquid absorption material layer and a non-woven fabric layer wrapping the liquid absorption material layer; the liquid absorbing material layer is formed by alternately arranging a plurality of fluff pulp strip-shaped structures and a plurality of super absorbent resin strip-shaped structures at intervals.

Preferably, the fluff pulp strip-like structure is formed from fluff pulp; and/or the high-water-absorption resin strip-shaped structure is formed by wrapping high-water-absorption resin with non-woven fabric.

Preferably, the width of each fluff pulp strip-like structure is 0.3-0.5cm; and/or the width of each high water absorbent resin strip-shaped structure is 1-2cm.

Preferably, the open pore ratio of the latex material is 70-90%, and/or the thickness of the latex material is 1-10mm; and/or in the lower layer absorber, the adding amount of the liquid absorption material is 50-200g/m ² 。

Preferably, the antimicrobial absorbent article further comprises a water barrier layer disposed between the facing layer and the absorbent core; preferably, the waterproof layer is made of terylene wood pulp spunlace cloth or PP wood pulp spunlace cloth; more preferably, a super absorbent resin layer is further disposed between the water barrier layer and the absorbent core.

Preferably, the gram weight of the water-resisting layer is 35-80g/m ² (ii) a And/or the addition amount of wood pulp in the water-resisting layer is more than 50%.

Preferably, the lauric acid content in the coconut oil is 30-60 wt%.

The invention provides a preparation method of the antibacterial absorbent article in the first aspect, which comprises the steps of preparing a surface layer, preparing an absorbent core, preparing a bottom film layer, and compounding the surface layer, the absorbent core and the bottom film layer into a whole; wherein, the preparation of the surface layer comprises the following substeps:

s1, preparing a hydrophilic non-woven fabric, and spraying or scraping coconut oil in a liquid state on the hydrophilic non-woven fabric on line;

and S2, compounding water-repellent non-woven fabrics on two transverse sides of the hydrophilic non-woven fabric treated in the step S1 in an online manner.

Preferably, the liquid is sprayed or scraped on-lineThe liquid loading amount of coconut oil is 0.1-2g/m ² (ii) a And/or the water-repellent non-woven fabric is obtained by coconut oil treatment.

Preferably, the preparation of the coconut oil comprises the following steps:

(1) Using coconut meat as a raw material, crushing to 25-50 meshes;

(2) Subpackaging the crushed coconut meat, and then extruding coconut pulp by using extrusion equipment;

(3) Naturally fermenting the coconut milk at 20-30 deg.C for 24-36 hr, and separating out coconut oil.

Compared with the prior art, the invention at least has the following beneficial effects:

(1) The antibacterial absorptive article is added with a novel antibacterial material which is prepared by taking edible coconut oil as a main raw material, the novel antibacterial material is nontoxic and has excellent antimicrobial activity, the coconut oil mainly comprises medium-chain fatty acids, the medium-chain fatty acids have natural antibacterial performance, medium-chain fatty molecules can kill staphylococcus aureus, escherichia coli and candida albicans, lauric acid, capric acid, caprylic acid, palmitic acid, coronene acid and oleic acid in the coconut oil can repeatedly and contactingly enclose bacteria, the antibacterial capacity of the lauric acid is not limited by pH, the antibacterial effect can still be exerted under an alkaline condition, and the antibacterial absorptive article is a human-friendly antibacterial aid.

(2) The invention changes the structure of the traditional absorption article, the absorption core body is set into a double-layer absorber structure, the upper layer and the lower layer are clear in labor division, the upper layer absorber is made of latex, the lower layer absorber is responsible for absorbing liquid, the lower layer absorber is a structure in which fluff pulp and super absorbent resin are alternately distributed at intervals, the early-stage absorption speed of the super absorbent resin can be effectively buffered, and the phenomena of fluff pulp lumping and fault after the traditional fluff pulp structure absorbs the liquid can be effectively solved; meanwhile, the liquid is fully absorbed by the lower-layer absorber, meanwhile, in some preferred embodiments, the waterproof layer is arranged, reverse osmosis is effectively reduced, residual liquid of the latex absorbing layer is prevented from permeating back to the surface of the product, dryness of the product is guaranteed, double guarantee can be provided for the antibiosis of the absorbing article, and in some more preferred embodiments, the super absorbent resin layer is arranged between the waterproof layer and the absorbing core layer, so that the absorption speed of the antibiosis absorbing article can be further improved, the reverse osmosis is reduced, and the dryness of the surface of the product is improved.

(3) The absorbent core body is of a double-layer absorbent structure, the upper layer is made of latex materials, the lower layer is of a structure in which fluff pulp and super absorbent resin are alternately distributed at intervals, discomfort caused by extrusion when a product is used can be effectively avoided, the product is not prone to deformation, the memory function is achieved, wearing comfort is achieved, and the problems that the product is hard during wearing and deforms are solved.

(4) In the invention, after the antibacterial absorbent article absorbs liquid, every two adjacent high water absorbent resin strip-shaped structures are higher than the fluff pulp strip-shaped structures to form the diversion trench, and the formation of the diversion trench is favorable for quick liquid infiltration, so that the liquid can flow in the absorption core body more quickly and be absorbed by the absorption core body, the absorption speed of the antibacterial absorbent article can be obviously improved, and the antibacterial absorbent article has the characteristics of instantaneous liquid absorption, quick liquid dispersion and capability of reducing reverse osmosis; in some preferred embodiments of the present invention, in the lower layer absorber, the fluff pulp and the super absorbent resin are alternately arranged in a strip shape along the length direction of the lower layer absorber, and the non-woven fabric is wrapped outside each strip-shaped super absorbent resin, so that the super absorbent resin can be effectively prevented from infiltrating into the fluff pulp, the respective formation of the fluff pulp strip-shaped structure and the super absorbent resin strip-shaped structure is facilitated, and after the non-woven fabric wrapped super absorbent resin strip-shaped structure absorbs water, the swelling is higher, and because the formation of an obvious diversion trench structure is facilitated, the liquid infiltration and conduction are facilitated, and the dryness is good.

(5) The antibacterial absorbent article has the advantages of being excellent in antibacterial performance, capable of moistening skin, improving dry skin and preventing allergy in the using process of a user, high in absorption speed, low in reverse osmosis, good in dryness, free of breakage and lump after being absorbed and the like.

(6) The invention has the advantages of simple use, easy operation, simple requirement on equipment, simple manufacturing procedure, easy implementation and good application prospect.

Drawings

The drawings of the present invention are provided for illustrative purposes only, and the proportion, size and number of parts in the drawings do not necessarily correspond to those of an actual product.

Fig. 1 is a schematic view of an antimicrobial absorbent article according to some embodiments of the present invention.

Figure 2 is a schematic view of a plurality of fluff pulp strip-like structures and a plurality of superabsorbent resin strip-like structures in alternate spaced arrangement in a layer of absorbent material, in accordance with certain embodiments of the present invention.

In the figure: 1: a surface layer; 2: a water barrier layer; 3: a super absorbent resin layer; 4: an absorbent core; 41: an upper layer absorber; 42: a lower layer absorber; 5: a base film layer; 6: fluff pulp strip-like structures; 7: the super absorbent resin has a strip structure.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are a part of the embodiments of the present invention, but not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.

The invention mainly aims at solving the potential safety hazard and functional defects of silver ion antibacterial agents, chitosan antibacterial agents and tea tree oil antibacterial agents used in sanitary products such as sanitary towels (protection pads), diapers and paper diapers or solving one or more technical problems of slow absorption speed, high reverse osmosis, poor surface dryness and the like of an absorption core body of an existing absorption product which is required to be further improved, and provides an absorption article and a preparation method thereof.

The present invention provides in a first aspect an antimicrobial absorbent article, fig. 1 is a schematic view of the construction of an antimicrobial absorbent article according to some embodiments of the present invention; figure 2 is a schematic view of the distribution of a plurality of fluff pulp strip-like structures and superabsorbent resin strip-like structures in some embodiments of the present invention in an absorbent material layer alternating at intervals along the length of the absorbent material layer.

In the invention, the antibacterial absorbent article comprises a surface layer 1 (also referred to as a liquid-permeable surface layer), an absorbent core 4 and a bottom film layer 5 (also referred to as a liquid-impermeable bottom film layer) from top to bottom in sequence, and the material adopted by the bottom film layer 5 has no special requirement, for example, the bottom film layer can be made of a PE film; coconut oil is added into the surface layer 1, the source of the coconut oil is not particularly limited, and products which can be directly purchased in the market or coconut oil obtained by a method disclosed in the prior art can be adopted; in the present invention, the mode of addition of the coconut oil is not particularly limited, and it is preferable that the amount of addition of the coconut oil is 0.1 to 2g/m ² Preferably 0.1 to 1g/m ² More preferably 0.5 to 1g/m ² In the invention, the addition amount of the coconut oil refers to the addition grams of the coconut oil in each square meter of the surface layer; in the invention, the coconut oil is added into the surface layer, the coconut oil is antibacterial and nontoxic and has excellent antimicrobial activity, the coconut oil is mainly composed of medium-chain fatty acids, the medium-chain fatty acids have natural antibacterial performance, and medium-chain fatty molecules can break through staphylococcus aureus, escherichia coli and candida albicans to kill the staphylococcus aureus, the escherichia coli and the candida albicans; coconut oil is the only grease consisting of medium-chain fatty acid in daily food, and the medium-chain fatty molecule is smaller than long-chain fatty molecules of other foods, so that the coconut oil is easy to absorb by a human body to moisten the skin, regulate the secretion of sebaceous glands, improve dry skin and prevent the generation of allergy; in coconut oilThe lauric acid, the capric acid, the caprylic acid, the palmitic acid, the coronene acid and the oleic acid can perform occlusion on bacteria in a repeated contact manner, the antibacterial capability of the lauric acid is not limited by pH, and the lauric acid still can play an antibacterial role under an alkaline condition, so that the coconut oil is a human-friendly antibacterial aid.

In the present invention, the absorbent core 4 includes an upper layer absorbent body 41 and a lower layer absorbent body 42, the upper layer absorbent body 41 being closer to the top sheet 1 than the lower layer absorbent body 42; the upper layer absorber 41 is made of latex material, and the upper layer absorber 41 can also be referred to as a latex absorbing layer; the source of the latex material is not particularly limited, and the latex material can be directly purchased from the market; in the invention, the gram weight of the latex absorption layer is preferably 50-200g per square meter, the latex material is an open-cell material, and the open-cell rate is more than 85%; the lower layer absorber 42 is composed of a liquid absorbing material layer and a non-woven fabric layer wrapping the liquid absorbing material layer; the liquid absorbing material layer is formed by alternately arranging a plurality of fluff pulp strip-shaped structures 6 and a plurality of super absorbent resin strip-shaped structures 7 at intervals; specifically, for example, the liquid-absorbent material layer is formed by alternately arranging a plurality of fluff pulp strip-like structures 6 and a plurality of superabsorbent resin strip-like structures 7 at intervals along the length direction of the liquid-absorbent material layer, and for example, as shown in fig. 2, one superabsorbent resin strip-like structure 7 is arranged between every two adjacent fluff pulp strip-like structures 6.

Different from the common absorbing core body, the structure of the absorbing core body is changed, the traditional fluff pulp structure and composite core body structure are abandoned, the absorbing core body is of a double-layer structure, the upper layer and the lower layer of the absorbing body are definite in labor division, the upper layer of the absorbing body adopts a latex absorbing layer, the infiltration effect is better, the liquid infiltration speed is obviously accelerated, the lower layer of the absorbing body adopts a super-absorbent layer comprising a liquid absorbing material layer formed by alternately arranging a plurality of fluff pulp strip-shaped structures and a plurality of high-water-absorption resin strip-shaped structures at intervals, the absorption performance of the lower layer of the absorbing body is good, the lower layer of the absorbing body adopts a structure formed by alternately arranging the fluff pulp and the high-water-absorption resin at intervals, the problem that the early-stage absorption speed of the high-water-absorption resin is slow can be effectively buffered, and compared with a structure formed by mixing the fluff pulp and the high-water-absorption resin, each two adjacent high-water-absorption resin strip-absorption structures are higher than the fluff pulp strip-shaped structures to form a diversion trench, the formation of the diversion trench is more favorable for further facilitating the rapid liquid infiltration, the liquid can flow in the absorbing core body and the absorbing body can obviously improve the absorption speed of the absorbing article, and the anti-absorption of the anti-bacterial absorbing core body, and the anti-absorbing article has the characteristic of being capable of rapidly reducing the instantaneous absorption; the liquid absorbing material layer can ensure that liquid is absorbed by the lower absorber quickly, so that the absorption speed is improved effectively and reverse osmosis is reduced effectively; in the invention, the upper layer absorber and the lower layer absorber are mutually matched, reverse osmosis can be obviously reduced, and simultaneously, no lump and fault phenomena of a fluff pulp structure occur after a product absorbs liquid, and the problems of non-open conduction and large reverse osmosis of a composite core body can not occur; in addition, the upper layer of the absorption core body is designed by adopting a latex material, and the lower layer of the absorption core body is in an alternate interval distribution structure of fluff pulp and super absorbent resin, so that discomfort caused by extrusion when the product is used can be effectively avoided, the product is not easy to deform, the memory function is realized, the wearing comfort is realized, and the problems of hardness, product deformation and the like of the product in the wearing process are reduced.

According to some preferred embodiments, the fluff pulp strip-like structure 6 is formed from fluff pulp; in the invention, the fluff pulp is uniformly distributed in a strip shape along the length direction of the liquid absorbing material layer to form the fluff pulp strip-shaped structure 6; and/or the high water-absorbent resin strip-shaped structure 7 is formed by wrapping high water-absorbent resin with non-woven fabric; in the invention, the super absorbent resin is uniformly distributed in a strip shape along the length direction of the liquid absorbing material layer, and the non-woven fabric is coated outside the super absorbent resin distributed in the strip shape to form a super absorbent resin strip-shaped structure 7; the invention has no special requirement on the performance of the adopted super absorbent resin, and preferably, the liquid retention capacity of the super absorbent resin is more than 30g/g, the absorption speed of the super absorbent resin is less than 35s, and the particle size distribution range of the super absorbent resin is 35-80 meshes; in some preferred embodiments of the present invention, in the lower layer absorber 42, the fluff pulp and the super absorbent resin are alternately arranged in a strip shape along the length direction of the liquid absorbent material layer, and the non-woven fabric is wrapped outside each strip-shaped super absorbent resin, so that the super absorbent resin can be effectively prevented from infiltrating into the fluff pulp, the strip-shaped structure of the fluff pulp and the strip-shaped structure of the super absorbent resin can be formed respectively, and after the non-woven fabric wrapped super absorbent resin absorbs water, the swelling is higher, and because the formation of an obvious diversion trench structure is more facilitated, the liquid infiltration and conduction are more facilitated, and the dryness is good.

According to some preferred embodiments, the width of each of the fluff pulp strip-like structures 6 is from 0.3 to 0.5cm (e.g. 0.3, 0.35, 0.4, 0.45 or 0.5 cm); and/or the width of each of said superabsorbent resin strip-like structures 7 is from 1 to 2cm (e.g. 1, 1.2, 1.5, 1.8 or 2 cm); in the present invention, it is preferable that the width of each fluff pulp strip-like structure 6 is 0.3 to 0.5cm, and the width of each superabsorbent resin strip-like structure 7 is 1 to 2cm, and the inventors have found that, as a result, the effect of combining the fluff pulp strip-like structures and the superabsorbent resin strip-like structures is better, the absorption speed of the antimicrobial absorbent article in the present invention can be further increased, and the reverse osmosis can be reduced; the fluff pulp strip-shaped structure is beneficial to quickly absorbing liquid and preventing the liquid from leaking and side leakage; meanwhile, the invention discovers that if the width of the fluff pulp strip-shaped structure is over-wide and is more than 0.5cm, a large amount of liquid can be absorbed by the fluff pulp, but the liquid can not be stored, and the reverse osmosis amount is larger, and the width of the high-water-absorption resin strip-shaped structure is more than that of the fluff pulp strip-shaped structure, so that the fluff pulp strip-shaped structure can fully expand after absorbing the liquid, an obvious diversion trench is formed, and the liquid infiltration can be promoted; the length of the fluff pulp strip-shaped structures and the high water absorbent resin strip-shaped structures is not particularly limited and can be matched with the length of the liquid absorbing material layer according to the requirement, and similarly, the total number of the fluff pulp strip-shaped structures and the total number of the high water absorbent resin strip-shaped structures are not particularly limited and can be matched with the total width of the liquid absorbing material layer according to the requirement.

According to some preferred embodiments, the latex material has an open porosity of 70-90%, preferably 80-90%; and/or the thickness of the latex material is 1-10mm, preferably 1-5mm.

According to some preferred embodiments, the liquid-absorbing material is added in an amount of 50 to 200g/m in the lower absorbent body 42 ² Preferably 150 to 200g/m ² 。

According to some preferred embodiments, the antimicrobial absorbent article further comprises a water barrier layer 2, the water barrier layer 2 being disposed between the facing layer 1 and the absorbent core 4; preferably, the waterproof layer 2 is made of terylene wood pulp spunlace cloth or PP wood pulp spunlace cloth; in the invention, a water-resisting layer is preferably added between the surface layer and the absorption core body, in the use process, liquid firstly passes through the water-resisting layer, so that the liquid is quickly absorbed and transferred to the upper layer absorber, the liquid is further conducted, absorbed and diffused in the upper layer absorber and transferred to the lower layer absorber, the lower layer absorber is used as a main absorber, the liquid is stored without reverse osmosis, and finally the water-resisting layer can play a role in blocking the liquid when the absorption core body is under pressure, so that the reverse osmosis is obviously reduced, the residual liquid of the latex absorber is prevented from being re-infiltrated to the surface of a product, the dryness and the good dryness of the surface of the product are ensured, and the double guarantee can be provided for the antibiosis of the absorption article.

According to some more preferred embodiments, a super absorbent resin layer 3 is further arranged between the water barrier layer 2 and the absorbent core 4; the inventor finds that the high water absorption resin layer 3 can further improve the absorption speed of the antibacterial absorbent article, reduce reverse osmosis and improve the surface dryness of the product; in the invention, the gram weight of the high water absorbent resin layer 3 is 30-50 g/square meter, namely when the high water absorbent resin is used for forming the high polymer water absorbent resin layer, the addition amount of the high water absorbent resin is smaller and is 30-50 g/square meter, so that the earlier stage absorption speed is not adversely affected.

According to some preferred embodiments, the grammage of the water barrier layer 2 is 35-80g/m ² (ii) a And/or the partitionThe amount of wood pulp added to the water layer 2 is 50% or more.

According to some preferred embodiments, the water barrier layer 2 is made of a PP wood pulp spunlace fabric, and the mass ratio of PP (polypropylene fibers) contained in the PP wood pulp spunlace fabric to wood pulp (wood pulp fibers) contained in the PP wood pulp spunlace fabric is (30-50): (70 to 50) (e.g. 30; or the waterproof layer 2 is made of terylene wood pulp spunlace cloth, and the mass ratio of terylene (polyester fiber) contained in the terylene wood pulp spunlace cloth to wood pulp (wood pulp fiber) contained in the terylene wood pulp spunlace cloth is (40-50): (60 to 50) (e.g., 40; in the invention, only the water-resisting layer formed by matching wood pulp fibers with the polypropylene fibers and/or the polyester fibers can effectively reduce the reverse osmosis of the antibacterial absorbent article and effectively improve the dry performance of the antibacterial absorbent article; in the present invention, it is preferable that the mass ratio of the PP fibers contained in the PP wood pulp spunlace fabric to the wood pulp fibers contained therein is (30 to 50): (70-50), wherein the mass ratio of terylene (polyester fiber) contained in the terylene wood pulp spunlace fabric to wood pulp fiber contained in the terylene wood pulp spunlace fabric is (40-50): (60 to 50) in this way, it is more advantageous to obtain an antimicrobial absorbent article with lower reverse osmosis, and in this preferred range, the higher the wood pulp content, the better the reverse osmosis reducing effect, while if the wood pulp content is too high, the higher the basis weight of the material, on the one hand, the higher the cost, and on the other hand, the reverse osmosis reducing effect is not outstanding.

According to some preferred embodiments, the lauric acid content in the coconut oil is 30 to 60wt%.

According to some preferred embodiments, the absorbent core 4 is further coated with a wrapping layer made of dust-free paper, wet-strength paper or wet-process super absorbent resin absorbent paper.

According to some preferred embodiments, the surface layer 1 is made of a hydrophilic non-woven fabric and a water-repellent non-woven fabric (hydrophobic non-woven fabric), the water-repellent non-woven fabric is compounded on two lateral sides of the hydrophilic non-woven fabric in an online manner to form the surface layer 1, coconut oil in a liquid state is sprayed or scraped on the hydrophilic non-woven fabric in an online manner, and preferably, coconut oil in a liquid state is sprayed or scraped on the water-repellent non-woven fabric in an online manner; more preferably, the hydrophilic non-woven fabric is a hydrophilic non-woven fabric obtained by coconut oil treatment, and/or the water-repellent non-woven fabric is a water-repellent non-woven fabric obtained by coconut oil treatment; further preferably, the hydrophilic non-woven fabric and/or the water-repellent non-woven fabric are made of ES fibers; the source of the hydrophilic non-woven fabric and the water-repellent non-woven fabric is not particularly limited, the hydrophilic non-woven fabric and the water-repellent non-woven fabric which can be directly purchased from the market or obtained by the existing method can be adopted, and the coconut oil treatment mode is not particularly limited and can be carried out by the conventional method.

The invention has no special requirement on the thickness of each structural layer of the antibacterial absorbent article, and the conventional thickness is adopted; unless otherwise stated, the present invention has no particular limitation on the amount of materials used in each of the examples and each layer structure in each comparative example, and any conventional amount or mass ratio may be used, and in the examples or comparative examples of the present invention, for example, when an absorbent core or absorbent layer is formed by fluff pulp and super absorbent resin, the mass ratio of the fluff pulp to the super absorbent resin may be used in a conventional mass ratio, and in some specific embodiments, for example, the ratio may be (1 to 3): (2 to 5), for example, 2:3 may be used.

s2, compounding water-repellent non-woven fabrics on the two transverse sides of the hydrophilic non-woven fabric treated in the step S1 in an online mode, preferably spraying or scraping coconut oil in a liquid state on the water-repellent non-woven fabrics in an online mode; in particular, in the present invention, it is defined that the antibacterial absorbent article has a longitudinal direction along a length direction and a transverse direction along a width direction.

According to some preferred embodiments, the hydrophilic non-woven fabric is obtained by coconut oil treatment, and the coconut oil treatment is carried out by the following specific steps:

a. the fiber particle extrusion drawing spinning, specifically for example, PP fiber and PE fiber particle extrusion drawing spinning can be adopted to form ES fiber, such ES fiber is of a sheath-core structure, and specifically includes the following sub-steps:

a1, performing heat treatment on fibers by using a drafting oil agent in a spinning process, and then processing the fibers by using a post-spinning oil agent, wherein an oil agent container is divided into two parts, one part is a normal hydrophilic treatment oil agent, the other part is a coconut oil agent, an oil agent container is provided with an upper oil cover and directly guides the oil agent into the container, an oil agent spraying switch is arranged below the oil agent container to adjust the using amount of the sprayed oil agent, and the weight of the coconut oil agent accounts for 0.05-5% of the total oil agent amount;

a2, performing winding treatment, drying and cutting on the fiber obtained after the treatment in the step a1 by a crimping machine, and then performing packaging treatment;

b. fiber web formation after-finishing oiling:

b1, mixing and opening the packaged fibers obtained in the step a, and spraying coconut oil onto the loose fibers after mixing and opening;

b2, performing web forming treatment on the treated fibers;

b3, reinforcing and forming the fiber web after the net formation;

b4, treating the fiber web after the reinforcement molding by coconut oil through a soaking method;

c. and c, preparing the fiber web obtained by the step b into a non-woven fabric through non-woven fabric forming equipment, and performing hydrophilic treatment to obtain the hydrophilic non-woven fabric.

According to some preferred embodiments, the liquid loading of the coconut oil in the liquid state sprayed or scraped on the hydrophilic nonwoven and/or the water repellent nonwoven is 0.1-2g/m ² Preferably 0.1 to 1g/m ² More preferably 0.5 to 1g/m ² 。

According to some preferred embodiments, the water-repellent nonwoven fabric is a coconut oil treated water-repellent nonwoven fabric, which is treated in a way that the last step c is omitted compared to the preferred coconut oil treated hydrophilic nonwoven fabric.

According to some preferred embodiments, the preparation of the coconut oil comprises the steps of:

(1) Using coconut meat as a raw material, crushing to 25-50 meshes;

(2) Subpackaging the crushed coconut meat, and then extruding coconut milk (coconut milk) from the crushed coconut meat by using an extruding device;

(3) Naturally fermenting the coconut milk at 20-30 deg.C for 24-36 hr to separate oil and water, taking out oil, heating for a short time to remove water, and separating coconut oil.

The present invention will be further described with reference to the following examples. These examples are merely illustrative of preferred embodiments of the present invention and the scope of the present invention should not be construed as being limited to these examples.

Example 1

An antibacterial absorptive article comprises a surface layer, an absorptive core and a bottom film layer from top to bottom in sequence; the surface layer is made of hydrophilic non-woven fabrics and water-repellent non-woven fabrics, the water-repellent non-woven fabrics are compounded on two transverse sides of the hydrophilic non-woven fabrics on line to form the surface layer, and coconut oil is added on the hydrophilic non-woven fabrics; the bottom film layer is made of a PE film; the absorbent core includes an upper layer absorber and a lower layer absorber, the upper layer absorber being closer to the top layer than the lower layer absorber; the upper absorber is made of latex material; the lower layer absorber is composed of a liquid absorption material layer and a spun-bonded non-woven fabric layer wrapping the liquid absorption material layer; the liquid absorbing material layer is formed by alternately arranging a plurality of fluff pulp strip-shaped structures and a plurality of high water absorbent resin strip-shaped structures along the length direction of the liquid absorbing material layer at intervals, the fluff pulp strip-shaped structures are formed by fluff pulp, the high water absorbent resin strip-shaped structures are formed by wrapping high water absorbent resin with spun-bonded non-woven fabric, the width of each fluff pulp strip-shaped structure is 0.4cm, and the width of each high water absorbent resin strip-shaped structure is 1.5cm; antibiotic absorbent article still includes the water barrier, the water barrier sets up the surface course with absorb between the core, the water barrier adopts PP wood pulp spunlace to make, the composition mass ratio of PP wood pulp spunlace does, the PP fibre: wood pulp fiber = 35; and a super absorbent resin layer is also arranged between the waterproof layer and the absorption core body.

Example 2

Example 2 is essentially the same as example 1, except that:

the water-resisting layer is made of wet strength paper.

Example 3

Example 3 is essentially the same as example 1, except that:

the antibacterial absorbent article in the present embodiment does not include the water-barrier layer and does not include the super absorbent resin layer.

Example 4

Example 4 is essentially the same as example 1, except that:

the absorbent core in the antibacterial absorbent article in this embodiment includes an upper absorbent layer made of absorbent paper.

Example 5

Example 5 is essentially the same as example 1, except that:

the absorbent core in the antibacterial absorbent article in this embodiment includes a lower layer absorber formed by mixing fluff pulp and a super absorbent resin.

Example 6

Example 6 is essentially the same as example 1, except that:

coconut oil is not added to the top layer.

Example 7

Example 7 is essentially the same as example 1, except that:

the width of each fluff pulp strip-shaped structure is 0.8cm, and the width of each super absorbent resin strip-shaped structure is 0.8cm.

Example 8

Example 8 is essentially the same as example 1, except that:

the water barrier adopts PP wood pulp spunlace to make, wherein, the composition mass ratio of PP wood pulp spunlace, PP fibre: wood pulp fiber = 70.

Example 9

Example 9 is essentially the same as example 1, except that:

the water-resisting layer is made of wood pulp spunlace.

Comparative example 1

This comparative example is essentially the same as example 1, except that the absorbent core is not structurally identical.

In this comparative example, the absorbent core comprised a first absorbent layer and a second absorbent layer, the first absorbent layer being smaller in size than the second absorbent layer, the first absorbent layer having a length, width and thickness that were each less than the corresponding length, width and thickness of the second absorbent layer; the first absorption layer is formed by mixing fluff pulp and super absorbent resin, wherein the fluff pulp accounts for 10% of the amount of the fluff pulp in the whole absorption core, and the super absorbent resin accounts for 30% of the amount of the super absorbent resin in the whole absorption core; the second absorption layer is formed by mixing fluff pulp and high water absorption resin, wherein the fluff pulp accounts for 90% of the dosage of the fluff pulp in the whole absorption core body, and the high water absorption resin accounts for 70% of the dosage of the high water absorption resin in the whole absorption core body.

Comparative example 2

In this comparative example, the absorbent core was a five-layer composite absorbent core comprising, in order from top to bottom, a dust-free paper layer, a super absorbent resin layer, a bulky nonwoven fabric layer, a super absorbent resin layer, and a dust-free paper layer.

Comparative example 3

In this comparative example, the absorbent core was formed by mixing fluff pulp and a super absorbent resin.

The absorbent articles of examples 1 to 9 and comparative examples 1 to 3 were subjected to the performance test of the present invention, and the results of the performance test are shown in table 1.

The test method comprises the following steps:

the test method comprises the following steps: adding liquid into the metal ring by using a funnel, taking 80mL three parts of 0.9% saline, adding liquid into the metal ring respectively within 0min, 10min and 35min, and recording the time for completing absorption each time as the absorption speed in unit of s; recording the diffusion length of the saline on the lower surface of the absorbent article in cm after each absorption of 0.9% saline; after adding the solution for 5min, the reverse osmosis is measured by applying a pressure of 3.5kg and a pressure of 3min with filter paper, the temperature of 0.9% saline is 25 ℃, and the unit g is measured.

Table 1: performance indexes of the absorbent articles in examples 1 to 9 and comparative examples 1 to 3.

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The invention has not been described in detail and is well known to those skilled in the art, and the invention may be conveniently selected by one of ordinary skill in the art based on actual needs or specific circumstances.

It is to be expressly understood that in the present application, the terms "upper", "lower", etc., indicate an orientation or positional relationship based on that shown in fig. 1, which is for convenience of describing the present invention and simplifying the description, but does not indicate or imply that the referenced components must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention; the specific meaning of the above terms in the present invention can be understood as appropriate to those of ordinary skill in the art.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims

1. An antimicrobial absorbent article characterized by:

the antibacterial absorbent article comprises a surface layer, an absorbent core and a bottom film layer from top to bottom in sequence;

coconut oil is added to the surface layer; the surface layer is made of hydrophilic non-woven fabrics and water-repellent non-woven fabrics, the water-repellent non-woven fabrics are compounded on two transverse sides of the hydrophilic non-woven fabrics on line to form the surface layer, and coconut oil is added on the hydrophilic non-woven fabrics; the preparation of the surface layer comprises the following steps: s1, preparing a hydrophilic non-woven fabric, and spraying or scraping coconut oil in a liquid state on the hydrophilic non-woven fabric on line; s2, compounding water-repellent non-woven fabrics on two transverse sides of the hydrophilic non-woven fabric treated in the step S1 in an online manner; the preparation of the coconut oil comprises the following steps: (1) Using coconut meat as a raw material, crushing to 25-50 meshes; (2) Subpackaging the crushed coconut meat, and then extruding coconut pulp by using extrusion equipment; (3) Naturally fermenting the coconut pulp at 20-30 ℃ for 24-36 hours, and then separating out coconut oil;

the absorbent core comprises an upper layer absorber and a lower layer absorber;

the upper absorber is made of latex material; the aperture ratio of the latex material is 70-90%;

the lower layer absorber consists of a liquid absorption material layer and a non-woven fabric layer wrapping the liquid absorption material layer;

the liquid absorbing material layer is formed by alternately arranging a plurality of fluff pulp strip-shaped structures and a plurality of super absorbent resin strip-shaped structures along the length direction of the liquid absorbing material layer at intervals; the fluff pulp strip-shaped structure is formed by fluff pulp; the high-water-absorption resin strip-shaped structure is formed by wrapping high-water-absorption resin with non-woven fabric; the width of each fluff pulp strip-shaped structure is 0.3-0.5cm; the width of each high water absorbent resin strip-shaped structure is 1-2cm; after the antibacterial absorbent article absorbs liquid, the two adjacent high water absorbent resin strip-shaped structures are higher than the fluff pulp strip-shaped structure to form a diversion trench;

the antibacterial absorbent article further comprises a water barrier layer, and the water barrier layer is arranged between the surface layer and the absorbent core body;

the waterproof layer is made of PP wood pulp spunlace; the mass ratio of PP contained in the PP wood pulp spunlace fabric to wood pulp contained in the PP wood pulp spunlace fabric is (30-50): (70-50).

2. The antimicrobial absorbent article of claim 1, wherein:

the thickness of the latex material is 1-10mm; and/or

In the lower layer absorber, the addition amount of the liquid absorbing material is 50-200g/m ² 。

3. The antimicrobial absorbent article of claim 1, wherein:

and a super absorbent resin layer is arranged between the waterproof layer and the absorption core body.

4. The antimicrobial absorbent article of claim 3, wherein:

the gram weight of the water-resisting layer is 35-80g/m ² (ii) a And/or

The addition amount of wood pulp in the water-resisting layer is more than 50%.

5. The antimicrobial absorbent article of claim 1, wherein:

the lauric acid content in the coconut oil is 30-60 wt%.

6. The method for producing an antibacterial absorbent article according to any one of claims 1 to 5, characterized by comprising the steps of preparing a face layer, preparing an absorbent core, preparing a base film layer, and compositing the face layer, the absorbent core and the base film layer into a whole; the preparation of the surface layer comprises the following steps:

and S2, compounding water-repellent non-woven fabrics on two transverse sides of the hydrophilic non-woven fabric treated in the step S1 in an online mode.

7. The method of claim 6, wherein:

the liquid loading amount of coconut oil in the state of online spraying or scraping liquid is 0.1-2g/m ² (ii) a And/or

The water-repellent non-woven fabric is obtained by coconut oil treatment.