KR20230116424A - Disposable diapers - Google Patents

Abstract

The present invention relates to disposable diapers.
The disposable diaper according to the present invention includes a pad 100 that covers the wearer's genitals and anus and protrudes from the front and rear of the waist, and is provided on both sides of the front and rear of the pad 100 to secure the pad 100 to the waist. It consists of a waist fixing means 200 fixed to.
According to the above configuration, the disposable diaper according to the present invention is composed of a pulp layer, a super absorbent polymer, and composite fibers, so that urine, secretions, or feces of children or the elderly are quickly absorbed so that they do not come into contact with the skin, and the surface It is dry, so it has excellent comfort and can be worn hygienically.

Description

Disposable Diapers {DISPOSABLE DIAPERS}

The present invention relates to a disposable diaper, and more particularly, by constructing a diaper including a pulp layer, a super absorbent polymer, and composite fibers, so that urine, secretions, or feces of children or the elderly do not come into contact with the skin quickly. It relates to a disposable diaper that absorbs water and dries the surface to have excellent comfort and can be worn hygienically.

In general, diapers are used to receive urine and feces of people who cannot cover urine and feces (eg, infants and dementia patients) or people with reduced mobility (eg, patients and the elderly). After urinating and urinating, a person who wears a diaper cannot change a diaper by himself, and usually a guardian (eg, a parent, family member, nurse, nurse, etc.) changes the diaper.

These diapers are worn by infants, the elderly, or urinary incontinence patients, and serve to absorb urine, secretions, or feces. Conventionally known diapers surround the genitals and anus, and the front and rear pads protrude from the front and rear of the waist, It is composed of waist fixing means provided on both sides of the front and rear of the pad to wear the pad around the waist.

The pad includes an upper sheet through which the wearer's genitals and anus are in close contact and transmits urine, secretions, or feces, an absorbent pad made of an absorbent material provided inside the pad to absorb and store urine, secretions, or feces, and a lower portion of the pad. It is composed of a waterproof sheet that is provided in and prevents clothes from being soiled.

In addition, the top sheet is composed of one of synthetic resin, synthetic fiber, and natural fiber to allow urine or secretions to pass through.

In addition, the waist fixing means is composed of an attachment elastic band provided on both sides of the front or rear of the pad and an attachment portion provided on both sides of the opposite side provided with the attachment elastic band to which the attachment elastic band is attached. In addition, the attachment elastic band and the attachment part composed of Velcro tape are most widely used.

The diaper configured as described above is used for absorbing urine, secretions, or feces of infants, the elderly, or incontinent patients. In this way, discomfort is caused by contact between the wet surface of the diaper where urine, secretions, or feces are absorbed and the skin. In addition, bacteria and odors caused by persistent moisture can limit social activities or cause other disease infections.

In addition, diapers currently sold in Korea use disposable or adult diapers (or panties) as they are or wear pads with increased absorption, so when a user uses disposable or adult diapers (or panties) or pads for a long time There is a problem that the genital area becomes sore and weak due to moisture, which can cause other skin diseases.

Domestic Patent No. 10-0675848 (registered on January 23, 2007) Domestic Patent No. 10-2125578 (registered on June 16, 2020) Domestic Patent No. 10-1304474 (registered on August 30, 2013)

The present invention provides excellent comfort by quickly absorbing urine, secretions, or feces of children or the elderly so that they do not come into contact with the skin and drying the surface by constituting a diaper including a pulp layer, super absorbent polymer, and composite fibers. It is to provide a disposable diaper that can be worn hygienically.

Various problems to be solved by the present invention are not limited to the above-mentioned problems, and other problems not mentioned will be clearly understood by those skilled in the art from the following description.

The disposable diaper according to the present invention includes a pad 100 that covers the wearer's genitals and anus and protrudes from the front and rear of the waist, and is provided on both sides of the front and rear of the pad 100 to secure the pad 100 to the waist. It consists of a waist fixing means 200 fixed to.

The pad 100 is a top sheet 110 through which the wearer's genitals and anus are in close contact and transmits urine, secretions, or feces, and is located under the top sheet 110 and transmits urine or secretions from the top sheet 110. Diffusion layer 120 for passing feces, ultra-fine fabric located under the diffusion layer 120, absorption pad 130 for absorbing and storing urine, secretions or feces transmitted through the diffusion layer 120 and ultra-fine fabric, and a protective sheet 140 provided under the absorbent pad 130 and preventing leakage of urine, secretions, or feces absorbed and stored in the absorbent pad 130 to the outside.

The absorbent pad 130 includes composite fibers 131, super absorbent polymers 133a and 133b located on both sides of the composite fibers 131, and the super absorbent polymers 133a and 133b. ) It includes pulp layers (134a, 134b) positioned on both sides and non-woven fabrics (135a, 135b) positioned on both sides of the pulp layers (134a, 134b).

The pulp layers 230a and 230b were prepared by mixing 10 parts by weight of charcoal powder, 20 parts by weight of zeolite powder, 15 parts by weight of bentonite powder, and 20 parts by weight of corn starch based on 100 parts by weight of purified water. It is prepared by stirring while heating at a temperature of 85° C. to 85° C., impregnating the pulp in the stirred mixture, and then heating the pulp coated with the mixture at a temperature of 20 to 30° C.

Details of other embodiments are included in the detailed description.

The disposable diaper according to the present invention is composed of a pulp layer, a super absorbent polymer, and composite fibers, so that urine, secretions, or feces of children or the elderly are quickly absorbed so that they do not come into contact with the skin, and the surface is dried to provide comfort. It is excellent and can be worn hygienically.

It will be fully understood that embodiments of the technical idea of the present invention can provide various effects not specifically mentioned.

1 is a view schematically showing a disposable diaper according to the present invention.
2 is a view schematically showing a cross section of a pad constituting a disposable diaper according to the present invention.
3a and 3b are photographs showing an absorbent pad constituting a pad of a disposable diaper according to the present invention.
4 is a view schematically showing a cross section of an absorbent pad constituting a pad of a disposable diaper according to the present invention.

The advantages and features of the present invention, and how to achieve them, will become clear with reference to the detailed description of the embodiments below. However, the present invention is not limited to the embodiments described herein and may be embodied in other forms. Rather, the embodiments introduced herein are provided so that the disclosed content will be thorough and complete and the spirit of the present invention will be sufficiently conveyed to those skilled in the art.

Terms used in this application are only used to describe specific embodiments, and are not intended to limit the present invention. Singular expressions include plural expressions unless the context clearly dictates otherwise.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs. Terms such as those defined in commonly used dictionaries should be interpreted as having meanings consistent with the meanings in the context of the related art, and unless explicitly defined in this application, they should not be interpreted in ideal or excessively formal meanings. don't

Hereinafter, a preferred embodiment of a disposable diaper according to the present invention will be described in detail with reference to the accompanying drawings.

1 is a view schematically showing a disposable diaper according to the present invention, FIG. 2 is a view schematically showing a cross section of a pad constituting the disposable diaper according to the present invention, and FIGS. 3a and 3b are views showing a disposable diaper according to the present invention. This is a photograph showing an absorbent pad constituting a pad of the present invention, and FIG. 4 is a view schematically showing a cross section of an absorbent pad constituting a pad of a disposable diaper according to the present invention.

1 to 4, the disposable diaper 10 according to the present invention includes a pad 100 that surrounds the wearer's genitals and anus and protrudes from the front and rear of the waist, and the front and back of the pad 100. It is provided on both sides of the rear and is composed of waist fixing means 200 for fixing the pad 100 to the waist.

In addition, in the disposable diaper 10 according to the present invention, the pad 100 is located under the upper sheet 110 and the upper sheet 110 through which the wearer's genitals and anus are in close contact and transmits urine, secretions or feces. A diffusion layer 120 for passing urine, secretions or feces permeated from the top sheet 110, an absorbent pad located below the diffusion layer 120 and absorbing and storing urine, secretions or feces transmitted through the diffusion layer 120 ( 130), and a protective sheet 140 provided under the absorbent pad 130 and preventing leakage of urine, secretions, or feces absorbed and stored in the absorbent pad 130 to the outside.

The top sheet 110 is in close contact with the wearer's genitals and anus to transmit urine, secretions or feces. The top sheet 110 should be soft to the touch and should not irritate the wearer's skin, and also It may be made of a fabric, non-woven fabric, or perforated thermoplastic film that is liquid permeable to easily pass (eg, urine, secretions, or feces).

For example, the fabric, nonwoven fabric, or perforated thermoplastic film forming the top sheet 110 may be made of natural fibers, synthetic fibers, or a mixture of natural and synthetic fibers, and the configuration of the top sheet 110 is known. Since it is a technology of, a detailed description thereof will be omitted for convenience of description and clarity of the technical idea of the present invention.

The diffusion layer 120 is located between the top sheet 110 and the absorbent pad 130, is liquid permeable to easily pass liquid (eg, urine, secretions, or feces), and uses heat or ultrasonic waves to pass the top sheet. It can be manufactured by bonding the materials forming the 110 and the diffusion layer 120 through ultrasonic processing.

For example, the materials forming the top sheet 110 and the diffusion layer 120 are not attached using hot melt as in the prior art, but the material forming the top sheet 110 and the diffusion layer 120 through ultrasonic processing. By attaching them, it is possible to remove the obstruction of the absorption rate of the permeable liquid (eg, urine, secretions, or feces) caused by the hardening of the hot melt, and also, the fast absorption through the diffusion layer 120 improves the wearing comfort and odorous substances can be easily collected.

The diffusion layer 120 may be made of materials known in the art, such as natural fibers, synthetic fibers, or mixtures of natural and synthetic fibers.

On the other hand, the diffusion layer 120 may be further formed with ultra-fine fabric (not shown) in order to improve wearing comfort by rapidly absorbing urine, secretions, or feces, and at the same time, to enhance antibacterial and sterilizing power, and to remove odors. There, the ultra-fine paper fabric can be manufactured by the following method.

That is, in order to manufacture the ultra-fine paper fabric 300, first, a wool single yarn made of wool may be prepared.

In the above step, wool (wool) refers mainly to wool as a natural material, and the wool is soft to the touch, has excellent heat retention and air permeability, does not wrinkle well and has excellent hygroscopicity.

In general, 100% wool fabric has a problem of high processing cost and low strength. In the present invention, in order to increase the antibacterial and antiodor activity of the fabric made of the wool, improve the sunscreen effect and the physical properties of the fabric itself, A wool single yarn may be prepared by mixing and coating the wool with a resin composition and a binder.

That is, in the above step, the wool single yarn may be prepared by mixing 80 to 90 parts by weight of wool, 1 to 3 parts by weight of the resin composition, and 3 to 7 parts by weight of the binder and then drying.

A thermoplastic resin containing a UV stabilizer may be used as the resin composition. The resin composition may be prepared by mixing 0.5 parts by weight of a UV stabilizer with respect to 100 parts by weight of the thermoplastic resin, and the thermoplastic resin is polyethylene ( At least one thermoplastic resin selected from the group consisting of PE), polyvinyl chloride (PVC) and polypropylene (PP) may be used.

In addition, the UV stabilizer is used to prevent discoloration by blocking ultraviolet rays from sunlight. For example, the UV stabilizer is salicylate-based, benzophenone-based, benzotriazole-based, cyanoacrylate-based, benzo Any one or more known UV stabilizers selected from the group consisting of ate-based, triazine-based, and amine-based UV stabilizers may be used.

The binder may provide effects such as bonding force or antibacterial property to the wool and improve the physical properties of wool. The binder may include polybutylene adipate terephthalate resin, polysiloxane, alkoxysilane, PMMA (Polymethly Methacrylate) resin composition, antibacterial nanopowder, dispersant and 1,3,5-triglycidyl isocyanurate.

In addition, the binder includes 10 to 20 parts by weight of polybutylene adipate terephthalate resin, 3 to 7 parts by weight of polysiloxane, 1 to 3 parts by weight of alkoxysilane, 3 to 7 parts by weight of PMMA (Polymethly Methacrylate) resin composition, and antibacterial nanopowder. 0.8 to 1.2 parts by weight, 0.1 to 0.5 parts by weight of the dispersant, and 0.5 to 1.5 parts by weight of 1,3,5-triglycidyl isocyanurate.

The polybutylene adipate terephthalate (PBAT) is a biodegradable bioplastic and is an environmentally friendly material that is 100% decomposed in the ground within 6 months. It can be obtained by condensation polymerization of 4-butanediol, adipic acid and terephthalic acid.

As such a PBAT resin, one directly synthesized by such a general method may be used, or a commercially available resin such as ECOPLEX (BASF) or PBG7070 (Samsung Fine Chemical) may be obtained and used. there is.

In addition, the PBAT resin may have a weight average molecular weight of 150,000 to 400,000. As the PBAT resin has this molecular weight range, compatibility and processability of the PBAT resin with other materials such as polysiloxane and PMMA resin composition It can be better than this, and can exhibit more improved physical properties and the like according to the relatively high molecular weight.

The polysiloxane can impart excellent water repellency and water repellency durability to the surface of ultrafine fabric by providing excellent water repellency.

The polysiloxane may be represented by the following [Formula 1].

[Formula 1]

In [Formula 1], R ⁴ is each independently a hydrogen atom, a substituted or unsubstituted C1 to C10 alkyl group, a substituted or unsubstituted C6 to C30 aromatic organic group, an acrylate organic group, an epoxy organic group, or any of these combination, X is a hydrogen atom, a hydrogen sulfide group, a substituted or unsubstituted C1 to C10 alkyl group, an acrylate organic group, an epoxy organic group, or a combination thereof, and n is a weight average molecular weight (Mw) of polysiloxane of 1,000 g /mol to 100,000 g/mol is an integer greater than or equal to 1.

For example, the polysiloxane may include dimethylpolysiloxane and organopolysiloxane, and the dimethylpolysiloxane and organopolysiloxane may be used in combination such that the ratio is 3:7 to 7:3.

The alkoxysilane can function as a crosslinking agent, surface treatment agent, adhesion promoter, and internal reinforcing agent, and generally strengthens the bond between an inorganic surface and an organic binder and can help exhibit various improved physical properties such as chemical resistance and moisture resistance. It is being used so that

The alkoxysilane is RnSi(OR')4-n (where R is an alkyl group having 1 to 4 carbon atoms, R' is an alkyl group having 1 to 3 carbon atoms or an acyl group having 1 to 3 carbon atoms, and n is 1, 2 or 3) can be represented.

The PMMA (Polymethly Methacrylate) resin composition includes a PMMA resin, and the PMMA resin refers to a resin containing methyl methacrylate monomer as a main component, and is a material widely used in human daily life, such as contact lenses, artificial joints, bones, etc. As it is composed of regular assemblies, there is little environmental pollution due to unreacted substances, and it is eco-friendly and safe for the human body as it does not generate toxic gas during work or fire.

The PMMA resin may be a PMMA resin having high elasticity and high tensile strength with an elongation of 100% or more and a tensile strength of 10 MPa or more. And a PMMA resin composition of high tensile strength can be prepared.

The PMMA resin composition, based on the total weight of the composition, 30 to 50 parts by weight of PMMA resin, 20 to 40 parts by weight of n-butyl acrylate (BA) monomer, 10 to 30 parts by weight of methyl methacrylate (MMA) monomer, 2-hydroxy ethyl methacrylate ( 5 to 10 parts by weight of 2-HEMA) monomer, 2 to 5 parts by weight of methacrylic acid (MAA) monomer, and 2 to 5 parts by weight of tripropyleneglycol diacrylate (TPGDA) monomer are mixed, heated to a temperature of 60 to 70 ° C, and mixed uniformly to obtain a first A first step of preparing a mixture; A second step of preparing a second mixture by mixing 0.1 to 1.0 parts by weight of n,n-dimethyl-p-toluidine (DMPT) as a hardening accelerator with the first mixture at a temperature of 40 to 50 °C; and a third step of preparing a PMMA resin composition by mixing 1 to 2 parts by weight of dibenzoyl peroxide (BPO) as a curing agent by cooling the second mixture to room temperature.

The PMMA resin is methyl methacrylate, ethyl methacrylate, n-butyl methacrylate, i-butyl methacrylate, t-butyl methacrylate, lauryl methacrylate, 2-ethylhexyl methacrylate, tri Methacryl such as decyl methacrylate, stearyl methacrylate, cyclohexyl methacrylate, benzyl methacrylate, 2-hydroxy ethyl methacrylate, 2-hydroxy propyl methacrylate, glycidyl methacrylate, etc. acrylate monomers and at least one acrylate monomer selected from the group consisting of methyl acrylate, ethyl acrylate, n-butyl acrylate, t-butyl acrylate and 2-ethyl hexyl acrylate, and methacrylic acid, acrylic acid, etc. Monomers having an acid value may be prepared by methods such as suspension polymerization, bulk polymerization, and solution polymerization using one or two or more monomers.

The PMMA resin has a molecular weight of 5,000 to 200,000 g / mol and a glass transition temperature (Tg) of 20 to 100 ° C., and the monomer having an acid value used during polymerization is preferably 0.1 to 5 parts by weight based on the total amount of polymerized monomers.

The monofunctional monomers include methyl methacrylate, ethyl methacrylate, n-butyl methacrylate, i-butyl methacrylate, t-butyl methacrylate, lauryl methacrylate, 2-ethylhexyl methacrylate , tridecyl methacrylate, stearyl methacrylate, cyclohexyl methacrylate, benzyl methacrylate, 2-hydroxy ethyl methacrylate, 2-hydroxy propyl methacrylate, glycidyl methacrylate, etc. Methacrylate-based monomers and acrylate-based monomers selected from the group consisting of methyl acrylate, ethyl acrylate, n-butyl acrylate, t-butyl acrylate and 2-ethylhexyl acrylate alone or in combination of two or more and can be used.

The crosslinkable monomer, which is a bifunctional monomer, is a monomer having two or more radically polymerizable double bonds in one molecule, and ethylene glycol diacrylate, ethylene glycol dimethacrylate, 1,2-propylene glycol diacrylate, 1 ,2-propylene glycol dimethacrylate, 1,3-butylene glycol diacrylate, 1,3-butylene glycol dimethacrylate, 1,6-hexanediol diacrylate, 1,6-hexanediol di Methacrylate, Diethylene glycol diacrylate, Diethylene glycol dimethacrylate, Dipropylene glycol diacrylate, Dipropylene glycol dimethacrylate, Triethylene glycol diacrylate, Triethylene glycol dimethacrylate, Tetra At least one selected from the group consisting of ethylene glycol diacrylate, tetraethylene glycol dimethacrylate, polyethylene glycol diacrylate, and polyethylene glycol dimethacrylate may be used.

The antibacterial nanopowder can be included in a binder to improve water repellency, durability, and weather resistance, and can be used to impart antibacterial and deodorizing properties. It can be prepared by mixing with.

The pure jite nanopowder may be prepared by powdering the shungite so that the particle diameter of the shungite is in the nanometer (nm) unit. The shungite is a material containing SiO ₂ (silicate) and C ₆₀ (fullerene) as main components. As, means a material containing natural fullerenes. A shungite containing 90% or more of fullerene is called elite shungite or noble shungite, and a shungite containing 60% or less of fullerene is called normal shungite.

Representative functions of the sunjit include antioxidant function, electromagnetic wave blocking function, contaminant purification and decomposition function, and sterilization and antibacterial function. Sunjit is a powerful natural antioxidant that has the function of enhancing human immunity against numerous diseases, adsorbs pollutants to purify water and air, and has the ability to self-decompose adsorbed pollutants.

In addition, the sunjit has antibacterial and bactericidal properties, and thus has the function of removing 99% or more of only Escherichia coli, Pseudomonas aeruginosa, Staphylococcus aureus, and harmful bacteria, blocks harmful electromagnetic waves, and emits a large amount of far-infrared rays.

In addition, the chilboseong nanopowder can be prepared by powdering the chilbojeok so that the particle diameter is in the nanometer (nm) unit. The seven jewels may have an effect of expanding capillaries, preventing cancer, preventing dementia, and activating cells necessary for human body activities.

In addition, the seven jewels are minerals having seven brilliant colors such as black, red, brown, red, gray, light gray and green, and the chemical main components are SiO ₂ , Al ₂ O ₃ , Fe ₂ O ₃ , FeO , CaO, MgO, Na ₂ O, TiO ₂ , P ₂ O ₅ and MnO are the main components, and it is composed of quartz, feldspar, biotite, muscovite, garnet, apatite, zircon, calcite, chlorite, sericite and other minerals. The radial form is a form in which left and right waves, which are torsion waves, are radiated.

In particular, looking at the compound analyzed for seven jewels, it contains more than 60% of SiO ₂ , so it has an excellent dehumidifying effect, contains a large amount of active alumina, etc., is rich in minerals, and shows a purification effect of neutralizing alkali salts.

The dispersant may use a material having excellent dispersibility and excellent stability of the binder, and a compound represented by the following [Formula 2] may be used as the dispersant.

[Formula 2]

Here, X and X' represent a hydrogen atom or a benzoylamino group, Z represents a hydrogen atom, R1 to R4 may be the same or different and represent a methyl group or an ethyl group, and n and m represent 2 or 3.

Specifically, the dispersant may be a dispersant represented by the following [Chemical Formula 3].

[Formula 3]

The 1,3,5-triglycidyl isocyanurate may be used as a curing agent, and the 1,3,5-triglycidyl isocyanurate is included in a binder to proceed with a curing reaction to improve mechanical and chemical properties. can be secured

For example, the 1,3,5-triglycidyl isocyanurate preferably has a glass transition temperature (Tg) of -20°C or less and a number average molecular weight (Mn) in the range of 1000 to 1500. do.

Next, the prepared wool yarn and polyvinyl alcohol (Poly Vinyl Alcohol; PVA) film may be heat treated to prepare a PVA-coated wool yarn.

The PVA (Poly Vinyl Alcohol), also called poval, is one of the water-soluble plastics. It is a white powder that is insoluble in common organic solvents other than water and maintains a stable state up to about 140°C. It is used as a glue for fabrics, sizing for paper, and as an emulsifying stabilizer.

Next, the wool yarn coated with the PVA may be stretched by twisting after heat treatment.

In the above step, the wool yarn coated with PVA is passed through the first feed roller, heat-treated in a heater at a temperature of 170 to 180 ° C, and then a second feed It can extend|stretch while passing a roller.

Subsequently, weaving may be performed using the stretched wool yarn.

In the above step, weaving may be performed by interlacing the stretched wool yarn in a cross shape in the transverse and longitudinal directions. For example, the weaving of the wool yarn is arranged at equal intervals so that the stretched wool yarn is adjacent to each other, or the stretching It can be done by twisting and weaving the wool yarn.

The configuration of weaving using the stretched wool yarn in the above step is a known technique in the art, and thus, a detailed description thereof will be omitted for convenience of description and clarity of the technical idea of the present invention.

Next, the woven wool yarn may be washed with hot water to produce a microfine paper fabric.

In the step, the woven wool yarn can be washed with water to remove the PVA coating layer coated on the surface of the wool yarn to prepare a microfine fabric. While washing with hot water, ultra-fine paper fabrics can be produced.

The absorbent pad 130 is located below the diffusion layer 120 and is provided to absorb and store urine, secretions or feces transmitted through the diffusion layer 120. The absorbent pad 130 is a liquid permeable top sheet ( 110) and the diffusion layer 120 to quickly absorb urine, secretions or feces passing through and retain the absorbed urine, secretions or feces to prevent them from contacting the skin again Do it.

The absorbent pad 130 includes composite fibers 131, super absorbent polymers 133a and 133b located on both sides of the composite fibers 131, and the super absorbent polymers 133a and 133b. ) It includes pulp layers (134a, 134b) positioned on both sides and non-woven fabrics (135a, 135b) positioned on both sides of the pulp layers (134a, 134b).

The composite fiber 131 is made of a human body-friendly material. For example, the manufacturing method of the composite fiber 131 includes a yarn preparation step (S100), a threading step (S200) and a weaving step (S300). ), and through the above steps, the composite fibers 131 can be woven.

That is, the composite fiber 131 may be a double fabric composed of a surface fabric and a back fabric. In the manufacturing method of the composite fiber 131, the surface inclination of the surface fabric is a polyester filament yarn. A yarn having a thickness of 300 denier was prepared by plying Cation Dyable Polyester and draw textured yarn at a weight ratio of 1: 1, and the surface weft of the surface fabric was made of polyester filament yarn. A yarn having a thickness of 400 denier is prepared by plying Cation Dyable Polyester of filament yarn and draw textured yarn in a weight ratio of 1:2, and the back side warp of the back fabric is full moon ( A yarn preparation step (S100) of preparing a full dull polyester draw texture yarn (DTY yarn) and preparing a dyed draw texture yarn (DTY yarn) on the back side of the weft yarn; A through-threading step (S200) of arranging the through-diameter ratio of the back slope and the surface slope at a constant number and inserting the warp into the heald and the reed: and when the surface slope and the back slope rise and fall It includes a weaving step (S300) of weaving the surface weft and the back weft by weaving the surface weft and the back weft.

The configuration of the tufting step (S200) and the weaving step (S300) can be performed by a known method for manufacturing a fiber fabric, for clarity of the technical idea of the present invention and convenience of explanation, the tufting step (S200) and A detailed description of the configuration of the weaving step (S300) will be omitted, and only the configuration of the yarn preparation step (S100) will be described in detail.

In the yarn preparation step (S100), looking at the thickness and material of the warp and weft yarns used in the first cycle of the surface fabric and the back fabric, the surface warp and the thickness of the yarn constituting the surface fabric The surface weft may be prepared by plying two synthetic fiber yarns having different thicknesses and different materials.

For example, the surface slope of the surface fabric is 300 denier by plying Cation Dyable Polyester and draw textured yarn of polyester filament yarn at a weight ratio of 1: 1 A yarn having a thickness of is prepared, and the surface weft of the surface fabric is plied with Cation Dyable Polyester and draw textured yarn of polyester filament yarn at a weight ratio of 1: 2 A yarn having a thickness of 400 denier may be prepared.

In addition, the back side warp constituting the back side fabric uses 72 strands of 75 denier full dull polyester draw texture yarn (DTY), and the back side weft yarn is 150 Denier dope draw Texture yarn (DTY yarn) can be used.

That is, the surface slope constituting the surface fabric is 300 Denier by plying Cation Dyable Polyester and draw textured yarn of polyester filament yarn at a weight ratio of 1: 1 A yarn having a thickness of is used, and the density of the surface warp is preferably 50 / inch, and the surface weft yarn constituting the surface fabric is Cation of polyester filament yarn. Dyable Polyester) and draw textured yarn are plied at a weight ratio of 1:2 to use a yarn having a thickness of 400 Denier, and the density of the surface weft yarn is preferably 60 yarns/inch. do.

In addition, the back warp constituting the back side fabric uses a full dull polyester draw texture yarn (DTY yarn) with a fineness of 72 strands and a thickness of 75 denier, and the density of the back side warp is 220 yarns / inch ), and the back weft yarn preferably uses 150 Denier dope draw texture yarn (DTY yarn) and has a density of 85 counts/inch.

In addition, the dope draw texture yarn (DTY yarn) can be used for the back fabric, and the dope draw texture yarn (DTY yarn) may use a thickness of 100 to 200 denier.

The super absorbent polymer (SAP) 133a, 133b is located on both sides of the composite fiber 131 and may be provided to quickly absorb and retain urine, secretions, or feces.

For example, super absorbent polymers (SAPs) 133a and 133b prepared by the following method may be used.

In order to prepare the superabsorbent polymer, first, a mixed solution in which a water-soluble ethylenically unsaturated monomer, a cellulose compound, a carboxy (C1-C5) alkyl chitosan, a grapefruit seed extract, a hydrophilic additive, and a crosslinking agent are mixed in a constant weight ratio is prepared. can

In the above step, the water-soluble ethylenically unsaturated monomers may be conventional water-soluble ethylenically unsaturated monomers used in water absorbent polymers, for example, methacrylic acid, maleic anhydride, crotonic acid, itaconic acid, 2-acryloylethanesulfonic acid , 2-methacryloylethanesulfonic acid, 2-methacryloylpropanesulfonic acid or 2-methacrylamide-2-methylpropanesulfonic acid anionic monomers and salts thereof; At least one selected from the group consisting of methacrylamide, N-substituted methacrylate, 2-hydroxyethyl methacrylate, 2-hydroxypropyl methacrylate and methoxy polyethylene glycol methacrylate may be used.

The cellulose-based compound is an environmentally friendly natural fiber that is completely biodegradable and capable of producing a superabsorbent polymer that is non-toxic to the human body. For example, the cellulose-based compound is methyl cellulose, ethyl cellulose, propyl cellulose, carboxymethyl cellulose , At least one selected from the group consisting of hydroxyethyl cellulose, methylhydroxyethyl cellulose, methylhydroxypropyl cellulose and ethylhydroxyethyl cellulose may be used.

The carboxy (C1-C5) alkyl chitosan is added to impart antimicrobial properties to the superabsorbent polymer, and has a chain structure similar to that of cellulose. For example, the carboxy (C1-C5) alkyl chitosan is carboxymethyl chitosan or Any one or more selected from carboxyethyl chitosan may be used.

The grapefruit seed extract (GSE, Grapefruit seed extract) has antibacterial, antifungal, and antioxidant effects, and was confirmed to be non-toxic in a toxicity test. In particular, among the components of the grapefruit seed extract, ascorbic acid, ascorbyl palmitate, and tocopherol weaken the functions of cell walls and cell membranes of putrefactive and pathogenic microorganisms, inhibit enzyme activity, and prevent cell proliferation mechanisms derived from DNA/RNA, thereby preventing bacterial growth. It has a bactericidal effect on yeast and mold, and has an inhibitory effect on the growth of mold and toxin synthesis.

The hydrophilic additive is formed of the superabsorbent polymer and then eluted from the superabsorbent polymer to form a microspace inside the superabsorbent polymer, and absorbs and stores urine, secretions, or feces by the microspace formed inside the superabsorbent polymer. power can be increased.

As the hydrophilic additive, at least one selected from the group consisting of sodium dodecyl sulfate, phosphate, sorbitan monolaurate, sorbitan monopalmitate, sorbitan monostearate, and sorbitan monooleate may be used.

The crosslinking agent is added to maintain stable gel strength in a swollen state by absorbing moisture and absorption rate of the superabsorbent polymer. For example, the crosslinking agent includes N,N'-methylenebismethacrylate, ethylene Oxymethacrylate, polyethyleneoxymethacrylate, propyleneoxymethacrylate, glycerin diacrylate, glycerin triacrylate, trimethylol triacrylate, triallylamine, triarylcyanurate, triallyl isocyanate, polyethylene glycol , At least one selected from the group consisting of diethylene glycol and propylene glycol may be used.

In the present invention, the mixed solution contains 80 to 120 parts by weight of water-soluble ethylenically unsaturated monomers, 20 to 40 parts by weight of cellulose compounds, 1 to 10 parts by weight of carboxy (C1-C5) alkyl chitosan, 0.5 to 2.5 parts by weight of grapefruit seed extract, 5 to 15 parts by weight of the hydrophilic additive and 1 to 3 parts by weight of the crosslinking agent may be mixed in a weight ratio.

Next, water may be added to the mixed solution in which the water-soluble ethylenically unsaturated monomer, cellulose-based compound, carboxy (C1-C5) alkyl chitosan, hydrophilic additive, and crosslinking agent are mixed, followed by stirring.

In the above step, the water may be used to dissolve and disperse the water-soluble ethylenically unsaturated monomer, cellulose-based compound, carboxy (C1-C5) alkyl chitosan, hydrophilic additive, and crosslinking agent, wherein the water-soluble ethylenically unsaturated monomer, cellulose-based compound , Carboxy (C1-C5) alkyl chitosan, 500 to 700 parts by weight of water may be added to a mixed solution consisting of a hydrophilic additive and a crosslinking agent, followed by stirring.

Next, a polymer may be formed by adding a polymerization initiator to the mixed solution in which the water is added and stirred.

In the above step, the polymerization initiator is added to promote the reaction of the mixed solution in which the water is added and stirred. Examples of the polymerization initiator include benzoin ether, dialkyl acetophenone, hydroxyl At least one selected from the group consisting of hydroxyl alkylketone, phenyl glyoxylate, benzyl dimethyl ketal, acyl phosphine and α-aminoketone may be used, and preferably 2,4,6-trimethyl-benzoyl-trimethyl phosphine oxide may be used.

In the above step, the polymerization initiator may proceed by adding 0.1 to 1 part by weight of the polymerization initiator to a mixed solution in which water is added and stirred.

Subsequently, after drying the polymer, the dried polymer may be pulverized to prepare a superabsorbent polymer.

In the above step, drying of the polymer may be performed at a temperature of 80 to 90 ° C., and the pulverization may be performed by using a pin mill, a hammer mill, a screw mill, or a roll mill to grind the dried polymer. The mill (roll mill), disk mill (disc mill) or jog mill (jog mill) using a known grinder, such as by grinding to a particle diameter of 10 to 300㎛ can be carried out.

The pulp layers 134a and 134b are positioned on both sides of the superabsorbent polymer layers 133a and 133b, and the pulp layers 1340a and 134b are prepared by including charcoal powder, zeolite powder, bentonite powder, corn starch, and purified water. It can be.

That is, the pulp layers 230a and 230b are prepared by mixing 10 parts by weight of charcoal powder, 20 parts by weight of zeolite powder, 15 parts by weight of bentonite powder, and 20 parts by weight of corn starch based on 100 parts by weight of purified water, and the mixture While stirring while heating at a temperature of 77 to 85 ° C., it can be prepared by impregnating the pulp in the stirred mixture and then heating the pulp coated with the mixture at a temperature of 20 to 30 ° C.

The charcoal is prepared by putting hard wood such as oak into a kiln and carbonizing it, and is also referred to as charcoal. Charcoal is used as a fuel for heating or cooking, and is also used for adsorption of gas or removal of impurities in liquid.

The zeolite is an aluminum silicate hydrate mineral and is a microporous material having pores with a diameter of several nm. It is also used as a catalyst because various organic substances that promote chemical reactions can be attached to fine pores.

The bentonite is a rock formed by chemical alteration of tuff or volcanic ash components, and is a type of clay. It shows white, gray, light brown, etc., and has the property of adsorbing water and swelling.

The nonwoven fabrics 135a and 135b are positioned on both sides of the pulp layers 134a and 134b. For example, the nonwoven fabrics 135a and 135b may be made of polypropylene (PP) resin.

The polypropylene (PP) resin is a thermoplastic resin obtained from a petrochemical plant, and in general, polypropylene is used in a variety of ways from general household items to industrial parts, and is called a human-friendly material.

For example, the nonwoven fabrics 135a and 135b are prepared by preparing polypropylene (PP) chips, putting the polypropylene (PP) chips into an extruder, and then performing conventional processes such as melting, spinning, and cooling. This non-woven fabric manufacturing technology is a well-known configuration, and a detailed description thereof will be omitted for convenience of description and clarity of the technical idea of the present invention.

The protective sheet 140 is impervious to liquid, so urine, secretions, or feces absorbed by the absorbent pad 130 do not contaminate products in direct contact with the disposable diaper 10, such as the wearer's clothes or bed sheets. or keep it from getting wet. The protective sheet 140 is preferably impervious to liquid and permeable to gas. As having these physical properties, a plastic film has been generally used, and a material obtained by attaching a non-woven fabric to a polyethylene film may be used.

The waist fixing means 200 can perform a function of maintaining the wearing state as it is by wearing the disposable diaper 10 on the body. For example, the waist fixing means 200 is an adhesive tape tab or a hook. Fastening members such as and loops can be widely used.

The protection sheet 140 and the waist fixing means 200 may be made of various types of materials and components in addition to the above configurations, and these configurations are known in the art for convenience of description and the technical spirit of the present invention. For clarity, a detailed description thereof will be omitted.

Hereinafter, examples and comparative examples of a disposable diaper according to the present invention will be described in more detail with reference to the accompanying drawings.

< Example >

It consists of a pad that surrounds the wearer's genitals and anus and protrudes from the front and rear of the waist, and a waist fixing means provided on both sides of the front and rear of the pad to wear the pad around the waist. A top sheet that adheres closely to transmit urine, secretions, or feces, a diffusion layer positioned below the top sheet and passing urine, secretions, or feces transmitted from the top sheet, a microfine paper fabric positioned below the diffusion layer, the diffusion layer and the ultrafine Includes an absorbent pad for absorbing and storing urine, secretions, or feces transmitted through the tissue paper fabric, and a protective sheet provided under the absorbent pad and preventing the leakage of urine, secretions, or feces stored in the absorbent pad to the outside. Disposable diapers were manufactured.

At this time, the absorbent pad includes composite fibers, a super absorbent polymer positioned on both sides of the composite fibers, a pulp layer positioned on both sides of the super absorbent polymer, and a nonwoven fabric positioned on both sides of the pulp layer. made including

<Comparative Example>

A diaper having the same configuration as in Example was manufactured.

At this time, in Comparative Example, the ultrafine paper fabric was not formed, and the absorbent pad was manufactured by including only the superabsorbent polymer and the nonwoven fabric located on both sides of the superabsorbent polymer.

1. Measurement of antibacterial and antifungal properties of disposable diapers

The antibacterial and antifungal properties of the disposable diapers prepared in the above Examples and Comparative Examples were evaluated.

(1) antibacterial

Antibacterial properties were evaluated against the test bacteria (E. coli, Escherichia coli) according to JIS L 1902 standards. After stationary culture of the test bacterial solution at 35 ± 1 ° C. and RH 90 ± 5% for 24 hours, the number of bacteria was measured to calculate the antibacterial rate.

(2) antifungal properties

Antifungal properties were evaluated based on growth in samples using five mixed strains based on ASTM G-21.

As the fungal strains (mixed strains) for evaluating the antifungal properties, Aspergillns niger, Penicillium pinophilum, Chaetomium globosum, Gliosiadiun virens and Aureobasidium pullulans were used.

The results for the antibacterial and antifungal properties are shown in [Table 1] below.

division antibacterial rate
(%) antifungal test duration of incubation time 1 week later 2 weeks later 3 weeks later 4 weeks later Example 99.9 0 0 0 0 comparative example 56.8 0 One 2 2

< Criteria for anti-fungal test >

0: Mycelial growth was not recognized in the inoculated part of the test piece.

1: Growth was recognized at 10% or less on the test piece.

2: Growth was recognized at 10 to 30% or less on the test piece.

3: Growth was recognized at 30 to 60% or less on the test piece.

4: Growth of 60% or more on the test piece was recognized.

Referring to [Table 1], in the case of the disposable diaper manufactured according to the embodiment, it was confirmed that the antibacterial and antifungal properties were excellent and the effect lasted for a long time.

2. Investigation of the content of volatile organic compounds (VOCs)

The content of volatile organic compounds (VOCs) was investigated for the disposable diaper, and the results are shown in [Table 2] below, and the test conditions are as follows.

Test condition and reference

1. Sample preparation: Disposable diaper specimen (5cm × 5cm)

2. Sample pretreatment: 2 hours, 65℃

3. Sample processing

3.1 Tedler Bag Size: 3L

3.2 Nitrogen Injection Volume: 3L

3.3 Adsorbent: Tenax TA (VOCs), DNPH catridge (Aldehyde)

3.4 Sampling volume

3.4.1 Aldehyde: 1.5L 3.4.2 VOCs: 1L

4. Analysis conditions (VOCs)

4.1 ATD (Turbomatrix manufactured by Perkin Elmer, USA)

4.1.1 Tube desorption temperature: 280℃ 4.1.2 Desorption time: 15 minutes

4.1.3 Maximum desorption temperature: 280℃ 4.1.4 Minimum desorption temperature: -30℃

4.2 GC/MS

4.2.1 Moving Gas: Helium

4.2.2 Column temperature: 40℃ (2 minutes) → 7℃/min → 220℃ (25 minutes) → 7℃/min → 280℃ (5 minutes)

4.2.3 Column: HP-1, 60m × 0.32mm

5. Analytical Conditions (Aldehyde)

5.1 HPLC

5.1.1 Column: C18 (150mm × 4.6mm ID) 5.1.2 Column temperature: 40℃

5.1.3 Mobile Phase: A: Water/THF (8:2,V:V), B: Acetonitrile

5.1.4 Gradient Elution: 0→25min, B 20→60%, 25→40min, B 20% Hold

5.1.5 Flow rate: 1.5 mL/min 5.1.6 Measurement wavelength: 360 nm 5.1.7 Injection amount: 20 μl

<Content of volatile organic compounds; Unit ㎍/㎥ >

division Example Benzene less than 10 Toluene less than 10 Xylene less than 10 Formaldehyde less than 10

Referring to [Table 2], it can be seen that the disposable diaper according to the embodiment has a content of Benzene, Toluene, Xylene, and Formaldehyde of 10 μg / ㎥. As shown in [Table 2], the disposable diaper according to the embodiment It can be seen that the diaper is environmentally friendly as it does not contain harmful substances.

3. Ammonia, hydrogen sulfide deodorization test

In a 300cc Erlenmeyer flask, an odor source of ammonia and hydrogen sulfide having the concentrations described below was put, and 20g of each of the disposable diaper specimens prepared according to the above Examples and Comparative Examples were added and sealed, and then left at regular intervals. The concentration of the odor source was measured.

(1) Ammonia deodorization test

A diluted solution was prepared by diluting 28% ammonia water with 4 times the volume of water, and a deodorization test was performed by adding 0.15 cc of the diluted solution so that the ammonia concentration was 160 ppm, and the results are shown in [Table 3] below.

Ammonia deodorization test (unit: ppm) division Example comparative example 3 minutes later 67 126 5 minutes later 45 112 10 minutes later 28 98 30 minutes later 18 82 after 60 minutes 12 78

(2) Hydrogen sulfide deodorization test

Hydrogen sulfide 3 was dissolved in 1 purified water at room temperature to prepare a solution, and 0.5 cc of the solution diluted 5 times was taken out and treated in the same way as ammonia. At this time, a deodorization test was performed so that the hydrogen sulfide concentration was 310 ppm, and the results are shown in [Table 4] below.

Hydrogen sulfide deodorization test (unit: ppm) division Example comparative example 1 hour later 175 243 2 hours later 132 201 3 hours later 84 172

Referring to [Table 3] and [Table 4], it can be confirmed that the disposable diaper according to the embodiment has an excellent deodorizing effect against ammonia and hydrogen sulfide.

Although the preferred embodiment of the present invention has been described above, those skilled in the art will understand that the present invention can be implemented in other specific forms without changing the technical spirit or essential features. You will be able to. Therefore, one embodiment described above should be understood as illustrative in all respects and not limiting.

10; disposable diaper 100; pad
110; Top sheet 120; diffusion layer
130; absorbent pad 131; composite fiber
133a, 133b; superabsorbent polymers 134a, 134b; pulp layer
135a, 135b; non-woven fabric 140; protective sheet
200; waist fixing device

Claims (1)

A pad 100 that surrounds the wearer's genitals and anus and protrudes from the front and rear of the waist, and waist fixing means provided on both sides of the front and rear of the pad 100 to fix the pad 100 to the waist ( 200),
The pad 100 is a top sheet 110 through which the wearer's genitals and anus are in close contact and transmits urine, secretions, or feces, and is located under the top sheet 110 and transmits urine or secretions from the top sheet 110. Diffusion layer 120 for passing feces, ultra-fine fabric located under the diffusion layer 120, absorption pad 130 for absorbing and storing urine, secretions or feces transmitted through the diffusion layer 120 and ultra-fine fabric, And a protective sheet 140 provided under the absorbent pad 130 and preventing leakage of urine, secretions, or feces absorbed and stored in the absorbent pad 130 to the outside,
The absorbent pad 130 includes composite fibers 131, super absorbent polymers 133a and 133b located on both sides of the composite fibers 131, and the super absorbent polymers 133a and 133b. ) pulp layers 134a and 134b located on both sides and non-woven fabrics 135a and 135b located on both sides of the pulp layers 134a and 134b,
The pulp layers 230a and 230b were prepared by mixing 10 parts by weight of charcoal powder, 20 parts by weight of zeolite powder, 15 parts by weight of bentonite powder, and 20 parts by weight of corn starch based on 100 parts by weight of purified water. A disposable diaper, characterized in that it is manufactured by stirring while heating at a temperature of 20 to 85 ° C, impregnating pulp in the stirred mixture, and then heating the pulp coated with the mixture at a temperature of 20 to 30 ° C.