KR101780378B1 - Pad comprising airlaid using brown algae and method manufacturing thereof - Google Patents

Abstract

Disclosed are a pad comprising airlaid using brown algae, and a manufacturing method thereof. The airlaid is manufactured by thermally compressing a decomposition accelerator using natural pulp and brown algae and, when a superabsorbent resin absorbs liquid and is turned into a gel state, the superabsorbent resin changed into the gel state reacts with the decomposition accelerator using brown algae included in the airlaid, so environmental-friendly air-lid can be manufactured.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a pad including an airlaid layer using brown algae,

The present invention relates to a pad including an airlaid layer using brown algae and a method for producing the same. More particularly, the airlaid layer is produced by thermally pressing a decomposition promoter using natural pulp and brown algae, Absorbing resin changed to a gel state reacts with a decomposition promoting agent using the brown algae contained in the airlaid layer to be liquefied when the gel is changed to a gel state, and a method for producing the same .

Supper Absorbent Polymer (SAP) is a synthetic polymer material capable of absorbing moisture from 800 to 2,000 times its own weight.

In addition, the superabsorbent resin has begun to be put to practical use as a sanitary article. In addition to sanitary articles such as paper diapers, the superabsorbent resin is used as a soil remediation agent for gardening, index materials for civil engineering and construction, seedling seeds, freshness- .

Such a superabsorbent resin does not decay on average for more than 100 years due to the characteristics of the superabsorbent resin after the absorption liquid is absorbed. If the superabsorbent resin is discarded without permission, soil contamination or lipid contamination will occur on the earth.

Korean Patent Laid-Open No. 10-2009-0064310 [Title: Method of producing superabsorbent resin]

An object of the present invention is to provide a pad including an airlaid layer using a brown algae that produces an airlaid layer by thermally pressing a decomposition promoter using natural pulp and brown algae, and a method of manufacturing the same.

It is another object of the present invention to provide a method for producing a water-absorbent resin, wherein when a superabsorbent resin contained in a pad absorbs a liquid phase and changes into a gel state, a superabsorbent resin changed into a gel state reacts with a decomposition accelerator using a brown alga And to provide a pad including an airlaid layer using liquefied brown algae and a method of manufacturing the same.

A method of manufacturing a pad including an airlaid layer using a brown alga according to an embodiment of the present invention is a method of manufacturing a pad including an airlaid layer using brown algae, Lt; / RTI > Mixing the natural pulp with a decomposition promoting agent using brown algae, and then thermally compressing the natural pulp and the decomposition promoting agent to prepare an airlaid layer; Forming the airlaid layer so as to surround the absorbent layer so that the absorbent layer does not leak to the outside; Forming a backsheet on a lower portion of the airlaid layer surrounding the absorbent layer; And forming a topsheet on top of the airlaid layer surrounding the absorbent layer.

In one embodiment of the present invention, the step of fabricating the absorbent layer comprises the steps of: placing a first nonwoven fabric and a second nonwoven fabric on the lower and upper sides of a superabsorbent polymer (SAP), respectively; And forming the absorbent layer by pressing the first nonwoven fabric and the second nonwoven fabric, which are respectively located below and above the superabsorbent resin.

As an example related to the present invention, the step of manufacturing the absorbent layer may be performed by mixing the pulp powder and the superabsorbent resin to form absorbent paper having a preset cross-sectional area and thickness.

In an embodiment of the present invention, the air layer is absorbed by the absorbent layer, the airlaid layer surrounding the absorbent layer is not exposed to the outside, and a space sealed by the back sheet and the top sheet is formed. And thermally fusing the perimeter of the topsheet.

As a related example of the present invention, the decomposition promoting agent using brown algae may be prepared by washing brown algae containing at least one of kelp, seaweed, garlic, mackerel, mulberry, rhubarb and mugwort using ethanol to remove impurities from the brown algae process; Drying the brown algae from which the impurities have been removed to a moisture content of 20% or less; Mixing the dried brown algae with an aqueous solution of sodium hydroxide in a weight ratio of 1: 0.7 to prepare a mixture; Boiling the mixture by a heater at a temperature ranging from 180 ° C to 220 ° C for 50 minutes to 70 minutes; Centrifuging the boiled mixture by a centrifugal separator to remove the aqueous solution and the precipitate to secure the first residue material; Filtering the first residue material by a filter paper to secure a second residue material; And a gamma processor to gamma-treat the second residual material to prepare a degradation promoter using the brown algae that has undergone the sterilization process.

As one example related to the present invention, when the superabsorbent resin contained in the absorbent layer absorbs the secretion, the superabsorbent resin absorbs the secretion and changes into a gel state in a powder state, and the volume of the superabsorbent resin An increasing step; As the volume of the superabsorbent resin increases, the superabsorbent resin contacts the decomposition promoter contained in the airlaid layer, and the superabsorbent resin reacts with the decomposition promoter in accordance with the contact. A step of liquefying the superabsorbent resin as the superabsorbent resin reacts with the decomposition promoter; And discharging the liquefied superabsorbent resin to the outside.

According to another aspect of the present invention, there is provided a pad including an airlaid layer using brown algae, the pad including an airlaid layer using brown algae, comprising: an absorbent layer absorbing secreted secretions secreted from a female body; An airlaid layer formed by mixing natural pulp with a decomposition promoting agent using brown algae, thermally pressing the mixed natural pulp with a decomposition promoter, and enclosing the absorbent layer so as to prevent the absorbent layer from leaking to the outside, A back sheet formed under the air laid layer; And a topsheet formed on top of the airlaid layer surrounding the absorbent layer.

As an example related to the present invention, the absorbent layer may include a superabsorbent resin; A first nonwoven fabric formed under the superabsorbent resin; And a second nonwoven fabric formed on the upper side of the superabsorbent resin, wherein the first nonwoven fabric and the second nonwoven fabric can be pressed against each other.

In one embodiment of the present invention, the back sheet and the top sheet are formed such that the secretion is absorbed by the absorbent layer, the airlaid layer surrounding the absorbent layer is not exposed to the outside, The back sheet and the periphery of the top sheet can be thermally fused.

As one example related to the present invention, when the superabsorbent resin contained in the absorbent layer absorbs the secretion, the superabsorbent resin absorbs the secretion and changes into a gel state in the powder state, and the volume of the superabsorbent resin Wherein the superabsorbent resin is in contact with the decomposition promoter contained in the airlaid layer as the volume of the superabsorbent resin increases and the superabsorbent resin reacts with the decomposition promoter in accordance with the contact, As the superabsorbent resin and the decomposition promoter react with each other, the superabsorbent resin is liquefied, and the liquefied superabsorbent resin can be discharged to the outside.

The present invention has an effect of providing an environmentally friendly airlaid layer by thermally compressing a decomposition promoter using natural pulp and brown algae to produce an airlaid layer.

Further, in the present invention, when the superabsorbent resin contained in the pad absorbs the liquid phase and changes to gel state, the superabsorbent resin changed into the gel state is liquefied by reacting with the decomposition promoter using the brown algae contained in the airlaid layer, The decomposition speed of the water absorbent resin is rapidly promoted so that the water absorbent resin is decomposed into a treatable liquid state that helps to preserve the environment, not the waste, and environmental pollution and lipid contamination can be prevented.

1 is an exploded perspective view showing the structure of a pad according to an embodiment of the present invention.
2 is a perspective view illustrating a configuration of a pad according to an embodiment of the present invention.
3 is a cross-sectional view taken along the line HH in Fig. 2 showing the structure of the pad according to the embodiment of the present invention.
4 is a plan view showing a configuration of a pad according to an embodiment of the present invention.
5 is a cross-sectional view showing the structure of an absorption layer according to an embodiment of the present invention.
6 is a cross-sectional view showing a configuration of an airlaid layer according to an embodiment of the present invention.
7 is a cross-sectional view showing the configuration of an airlaid layer having an absorbing layer formed therein according to an embodiment of the present invention.
8 to 12 are views illustrating a decomposition process of a superabsorbent resin by a decomposition promoting agent according to an embodiment of the present invention.
13 is a view showing a decomposition rate according to decomposition of a superabsorbent resin by a decomposition promoter according to an embodiment of the present invention.
14 is a flowchart illustrating a method of manufacturing a pad including an airlaid layer using a brown algae according to a first embodiment of the present invention.
15 to 16 are cross-sectional views of pads including an airlaid layer using brown algae according to a first embodiment of the present invention.
17 is a flow chart for producing a decomposition promoter using brown algae contained in an airlaid layer according to a second embodiment of the present invention.

It is noted that the technical terms used in the present invention are used only to describe specific embodiments and are not intended to limit the present invention. In addition, the technical terms used in the present invention should be construed in a sense generally understood by a person having ordinary skill in the art to which the present invention belongs, unless otherwise defined in the present invention, and an overly comprehensive It should not be construed as meaning or overly reduced. In addition, when a technical term used in the present invention is an erroneous technical term that does not accurately express the concept of the present invention, it should be understood that technical terms that can be understood by a person skilled in the art can be properly understood. In addition, the general terms used in the present invention should be interpreted according to a predefined or context, and should not be construed as being excessively reduced.

Furthermore, the singular expressions used in the present invention include plural expressions unless the context clearly dictates otherwise. The term "comprising" or "comprising" or the like in the present invention should not be construed as necessarily including the various elements or steps described in the invention, Or may include additional components or steps.

In addition, terms including ordinals such as first, second, etc. used in the present invention can be used to describe elements, but the elements should not be limited by terms. Terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the first component may be referred to as a second component, and similarly, the second component may also be referred to as a first component.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings, wherein like reference numerals refer to like or similar elements throughout the several views, and redundant description thereof will be omitted.

In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail. It is to be noted that the accompanying drawings are only for the purpose of facilitating understanding of the present invention, and should not be construed as limiting the scope of the present invention with reference to the accompanying drawings.

FIG. 1 is an exploded perspective view showing the configuration of a pad 10 according to an embodiment of the present invention. FIG. 2 is a perspective view showing the configuration of a pad 10 according to an embodiment of the present invention, and FIG. FIG. 4 is a plan view showing the configuration of the pad 10 according to the embodiment of the present invention. 1 to 4, the pad 10 is composed of a back sheet 100, an absorbent layer 200, an airlaid layer 300, and a top sheet 400. Not all of the components of the pad 10 shown in Figs. 1-4 are required, and the pad 10 may be embodied by more components than the components shown in Figs. 1-4, The pad 10 may also be implemented by fewer components.

The backsheet 100 is liquid impermeable and may be a breathable backsheet.

In addition, the back sheet 100 may have a structure in which air (or air) is absorbed through at least one of the absorbent layer 200 and the air-laid layer 300, And the like.

The amount of air (or oxygen) introduced into at least one of the absorbent layer 200 and the airlaid layer 300 can be controlled by the structure of the back sheet 100. [

In addition, the backsheet 100 is formed (or configured) in the form of a sanitary napkin or a panty liner.

In addition, the back sheet 100 is formed in such a manner that the airlaid layer 300 is formed on one surface, the other surface is fixed to any clothes (for example, underwear), or touches the user's skin.

1, 2 and 4, the back sheet 100 may include a flap 110 formed on both sides of an intermediate portion of the back sheet 100 .

The absorbent layer 200 is formed (or configured / manufactured / prepared) in a rectangular shape, a sanitary napkin (or menstrual pad) shape, a panty liner shape, or the like.

5, the absorbent layer 200 may include a first nonwoven fabric (or first pulp powder) 210, a superabsorbent polymer (SAP) 220, and a second nonwoven fabric Powder) 230 as shown in FIG. The absorbent layer 200 may be formed by placing the first nonwoven fabric 210 and the second nonwoven fabric 230 on the lower and upper sides of the superabsorbent resin 220, The first nonwoven fabric 210 and the second nonwoven fabric 230 located at the lower portion and the upper portion of the first nonwoven fabric 210 and the second nonwoven fabric 230 are respectively pressed or formed by mixing the nonwoven fabric (or pulp powder) It can be formed into an absorbent paper having a cross-sectional area and a thickness.

That is, the absorbent layer 200 forms the first nonwoven fabric 210, the superabsorbent resin 220, and the second nonwoven fabric 230 in a sheet form (or a rolled paper form). The superabsorbent resin 220 is formed on the first nonwoven fabric 210 and the second nonwoven fabric 230 in the form of a sheet is formed on the superabsorbent resin 220, (Or position). Thereafter, the absorbent layer 200 may be formed by pressing the first nonwoven fabric 210 and the second nonwoven fabric 230.

The absorbent layer 200 has a cross-sectional area smaller than the cross-sectional area of the back sheet 100.

The superabsorbent resin (220) can be formed into a thermostable microcapsule structure.

The superabsorbent resin (or the superabsorbent resin composition / superabsorbent resin powder) 220 may be a polyacrylate-based, PVA maleic acid reactant, an isobutylene maleic acid copolymer, a polyacrylonitrile polymer, a polyethylene oxide crosslinking agent, Absorbent resin composition such as an acrylonitrile polymer, a starch acrylic acid graft polymer, or the like.

The superabsorbent resin (220) is a white powder resin having water insolubility and hydrophilicity by performing a partial crosslinking treatment on the water-soluble polymer. When the SAP having an apparent density of 0.6 to 0.8 (g / cm 2) To 1000 (g / g).

When the water (or liquid) is absorbed, the superabsorbent resin 220 changes into a gel state and absorbs water of about 500 to 1,000 times its own weight. Even if pressure is applied, Is a functional polymer material (or a synthetic polymer material) having non-discharge characteristics.

The absorbing layer 200 is formed in a part of the inside of the airlaid layer 300.

In addition, the absorbing layer 200 may be formed in a shape (or structure) that can be easily attached and detached to the inside of the airlaid layer 300.

In addition, the absorbent layer 200 absorbs and stores secretions (for example, menstrual blood, cold, lower back, etc.) secreted from the female body.

The airlaid layer 300 includes natural pulp 310 and decomposition promoter 320 using brown algae.

That is, as shown in FIG. 6, the airlaid layer 300 includes the natural pulp (or pulp powder) 310 and the decomposition promoter 320 using the brown algae. The airlaid layer 300 may be formed by mixing the decomposition promoter 320 with the natural pulp 310 and thermally compressing the natural pulp 310 and the decomposition promoter 320 Or manufacture / preparation). At this time, the airlaid layer 300 may include 10 to 90% by weight of the natural pulp 310 and 10 to 90% by weight of the decomposition promoter 320, .

The airlaid layer 300 may be formed by applying the decomposition promoter 320 in powder form to at least one surface (or at least a part of the surface) of the outer surface of the natural pulp 310.

The airlaid layer 300 has a cross sectional area that is smaller than a cross sectional area of the back sheet 100 and the top sheet 400 so as to cover the entire surface of the absorbent layer 200.

In addition, the airlaid layer 300 absorbs and stores the secretion secreted from the female body.

The airlaid layer 300 is formed to surround the absorbing layer 200 to prevent the absorbing layer 200 from leaking to the outside.

That is, as shown in FIG. 7, the airlaid layer 300 is formed so as to surround the entire surface of the absorbent layer 200 so that the absorbent layer 200 is not leaked to the outside.

At this time, the decomposition promoter 320 may be prepared through the following process.

That is, the brown algae are washed with ethanol to remove impurities from the brown algae. Herein, the brown algae may include kelp, sea bass, sweet potato, mackerel, mackerel, rhubarb, and mackerel. In addition, the brown algae may use a single kind or two or more kinds, and when two or more types are used, the content ratio of the raw materials may be variously set according to the design of the manufacturer.

Further, the brown algae from which the impurities are removed are dried so that the moisture content is 20% or less (for example, the moisture content is 15% to 20%).

At this time, the drying method may be dried through a dryer (not shown) or naturally dried at room temperature.

Further, the dried brown algae and an aqueous solution of sodium hydroxide (for example, a 1.5 wt% aqueous solution of sodium hydroxide) are mixed at a ratio of 1: 0.7 by weight to prepare a mixture (or brown algae mixed with the sodium hydroxide aqueous solution).

Further, the mixture (or brown algae mixed with the aqueous sodium hydroxide solution) through a heater (not shown) is heated at a temperature ranging from 180 ° C to 220 ° C (generally 200 ° C) for 50 minutes to 70 minutes Boil (or heat).

Further, the boiled mixture is centrifuged through a centrifugal separator (not shown) to remove the aqueous solution and the precipitate, and to secure (or obtain / prepare) the first residue material. At this time, the boiled mixture may be cooled at room temperature for a preset time of 1 hour to 24 hours, and the cooled mixture may be centrifuged to remove the aqueous solution and the precipitate, thereby securing the first residue material.

In addition, the first residual material is filtered through a filter paper (for example, No. 2 filter paper (Whatman plc., Kent, UK) to secure (or obtain / prepare) a second residual material .

Also, the second residual material is gamma-processed through a gamma processor (not shown), and a decomposition promoter 320 using brown algae is prepared through a sterilization process.

That is, the cobalt-60 radioactive isotope (1.17 MeV) is irradiated to the second residual material through the gamma processor for 8 seconds to 12 seconds (generally 10 seconds) to remove the sterilized decomposition promoter 320 ).

At this time, the second residual material is rapidly frozen at a very low temperature (for example, 450 degrees or less) using liquid nitrogen of -196 degrees Celsius through a quick freezer (not shown).

Further, the rapidly frozen second residual material is finely pulverized through a pulverizer (not shown) to 37 탆 (or 400 mesh) or less (for example, 200 mesh to 400 mesh, 20 탆 to 37 탆).

Also, the micro-pulverized second residual material may be gamma-processed through the gamma processor to prepare the decomposition promoter 320 using the brown algae through the sterilization process.

Thus, the degradation promoter 320 subjected to the gamma treatment can be applied to sanitary articles such as sanitary napkins, diapers, etc. together with the superabsorbent resin (220).

In addition, the gamma processing is a process for obtaining a pure result (for example, the decomposition promoter 320) free from impurities and obtaining a uniform reaction result with the superabsorbent resin 220.

In addition, the component extracted from the brown algae can be irradiated with an appropriate gamma ray to cause cross-linking of cellulose and protein components in the component to obtain uniform components (resultant products).

The topsheet 400 is formed on top of the airlaid layer 300 (or on the top of the airlaid layer 300 that surrounds the absorbent layer 200, which surrounds the absorbent layer 200). The cross-sectional area of the topsheet 400 is equal to or smaller than the cross-sectional area of the backsheet 100. At this time, the top sheet 400 is formed so as to surround the airlaid layer 300.

The topsheet 400 may be formed of cotton, nonwoven fabric, rayon, silk, Tencel, or the like.

The topsheet 400 may be formed on top of the airlaid layer 300 using a method such as spraying, impregnation, or screen printing.

1, the topsheet 400 may include flaps 410 formed on both sides of an intermediate portion of the topsheet 400. In addition, as shown in FIG.

In addition, the topsheet 400 includes a surface layer formed with a plurality of air holes (or holes) or stripe-shaped ventilation holes so that the secretions can be absorbed.

In addition, the area (or the area in which the top sheet 400 contacts the back sheet 100) may be bonded (or adhered) by thermal fusion.

That is, the back sheet 100 and the top sheet 400 are absorbed (or embedded) by the absorbent layer 200, and a space sealed by the back sheet 100 and the top sheet 400 is formed The back sheet 100 and the topsheet 400 may be thermally fused to each other.

In order to prevent (or block) contact with outside air before use (or to prevent water or the like from being absorbed into the absorbent layer 200 included in the pad 10 before use, (Or sealed) using a polypropylene film and kept in a packed state by a plastic pack (not shown), a packaging container (not shown) or the like through a method such as vacuum packaging, and the pad 10 And may be configured to release the packaging state when it is used.

In the following, when the pad 10 manufactured as described above is used and the superabsorbent resin 220 contained in the absorbent layer 200 is changed into a gel state upon absorption of the secretion, A process in which the resin 220 is decomposed by reaction with the decomposition promoter 320 using brown algae contained in the airlaid layer 300 will be described.

That is, when the prepared pad 10 is used by the user and the secretion (or liquid / blood) secreted from the user is absorbed through the absorbent layer 200, The water absorbent resin 220 absorbs the secretion and changes from a powder state to a gel state. Further, as the secretion is absorbed, the volume of the superabsorbent resin 220 increases.

8, when the liquid phase flows into the absorbent layer 200, the superabsorbent resin 220 contained in the absorbent layer 200 absorbs the secretion as shown in FIG. 9 The volume of the super absorbent resin 220 (or the volume of the absorbent layer 200 including the super absorbent resin 220) is increased while absorbing and changing into the gel state.

10, as the volume of the super absorbent resin 220 (or the volume of the absorbent layer 200 including the super absorbent resin 220) is increased, Absorbing resin 220 and the decomposition promoter 320 are brought into contact with the airlaid layer 300 (or the decomposition promoter 320 included in the airlaid layer 300) .

11, the superabsorbent resin 220 is decomposed (or liquefied) as the decomposition promoter 320 reacts with the superabsorbent resin 220, as shown in FIG.

Thereafter, as shown in Fig. 12, the decomposed (or liquefied) superabsorbent resin is discharged to the outside, and is naturally discharged into the soil so as to be absorbed or reprocessed.

In addition, the pad 10 of the natural pulp component is spontaneously decomposed.

In the case where the super absorbent resin 220 is changed into a gel state and the pad 10 containing the super absorbent resin 220 is discarded without any decay for an average of 100 years or more, As shown in FIG. 13, the superabsorbent resin 220 changed into a gel state by the decomposition promoter 320 is decomposed into a liquefied state within about 90 days, , Soil pollution, lipid pollution, etc. can be prevented.

The decomposition promoter 320 reacts with the superabsorbent resin 220 changed into a gel form to form a gel form contained in various types of pads 10 such as a sanitary napkin, a diaper, an eye mask, Absorbent resin 220 in the liquid state.

As described above, the airlaid layer can be manufactured by thermally pressing the decomposition promoter using natural pulp and brown algae.

In addition, when the superabsorbent resin contained in the pad absorbs the liquid phase and changes to gel state, the superabsorbent resin changed into the gel state can be liquefied by reacting with the decomposition promoting agent using brown algae contained in the airlaid layer .

Hereinafter, a method of manufacturing a pad including an airlaid layer using brown algae according to the present invention will be described in detail with reference to FIGS. 1 to 17. FIG.

14 is a flowchart illustrating a method of manufacturing a pad including an airlaid layer using a brown algae according to a first embodiment of the present invention.

First, the absorbing layer 200 is formed (or formed / prepared). The absorbent layer 200 includes a super absorbent polymer (SAP) 220 surrounded by a first nonwoven fabric 210 and a second nonwoven fabric 230. At this time, the superabsorbent resin (220) may be formed into a thermostable microcapsule structure. When the water (or liquid) is absorbed, the superabsorbent resin 220 changes into a gel state and absorbs water of about 500 to 1,000 times its own weight, Is a functional polymer material (or a synthetic polymer material) having non-discharge characteristics.

In addition, the absorbent layer 200 absorbs and stores secretions (for example, menstrual blood, cold, lower back, etc.) secreted from the female body.

For example, as shown in FIG. 5, the first nonwoven fabric 210 and the second nonwoven fabric 230 located at the lower portion and the upper portion of the superabsorbent resin 220 are pressed to manufacture the absorbent layer 200 (S1410).

Thereafter, the airlaid layer 300 is formed (or formed / prepared). The airlaid layer 300 may be formed by mixing a decomposition promoter 320 using a brown algae with natural pulp 310 or pulp powder 310 and then thermally compressing the natural pulp 310 and the decomposition promoter 320 (Or preparation / formation). At this time, the airlaid layer 300 may include 10 to 90% by weight of the natural pulp 310 and 10 to 90% by weight of the decomposition promoter 320, .

The airlaid layer 300 may be formed by applying the decomposition promoter 320 in powder form to at least one surface (or at least a part of the surface) of the outer surface of the natural pulp 310.

6, the decomposition promoter 320 using the brown algae is mixed with the natural pulp 310, and the natural pulp 310 and the decomposition promoter 320 are thermally compressed, The airlaid layer 300 is manufactured (S1420).

The airlaid layer 300 is formed to surround the entire surface of the absorbent layer 200 so that the absorbent layer 200 is not leaked to the outside.

That is, the absorbing layer 200 is formed inside the airlaid layer 300.

For example, as shown in FIG. 7, the airlaid layer 300 is formed so that the absorbing layer 200 is formed therein (S1430).

The backsheet 100 is then formed on the bottom of the airlaid layer 300 (or surrounding the absorbent layer 200) that contains the absorbent layer 200 therein.

For example, as shown in FIG. 15, an airlaid layer 300 including the absorbing layer 200 is formed on the back sheet 100 (S1440).

The topsheet 400 is then formed on top of the airlaid layer 300 (or surrounding the absorbent layer 200) that contains the absorbent layer 200 therein. Here, the topsheet 400 includes a surface layer formed with a plurality of air holes (or holes) or stripe-shaped ventilation holes so that the secretions can be absorbed.

For example, as shown in FIG. 16, the topsheet 400 is formed on an airlaid layer 300 including the absorbent layer 200 (or surrounding the absorbent layer 200).

At this time, the back sheet 100 and the top sheet 400 are absorbed (or embedded) in the absorbent layer 200 and the air laid layer 300 is not exposed to the outside, and the back sheet 100 The back sheet 100 and the topsheet 400 may be thermally fused so that a space sealed by the top sheet 400 and the top sheet 400 is formed.

For example, as shown in FIG. 16, the topsheet 400 contacting the backsheet 100 may be joined (S1450) by thermal fusion.

17 is a flow chart for producing a decomposition promoter using brown algae contained in an airlaid layer according to a second embodiment of the present invention.

First, brown algae are washed with ethanol to remove impurities from the brown algae. Herein, the brown algae may include kelp, sea bass, sweet potato, mackerel, mackerel, rhubarb, and mackerel. In addition, the brown algae may use a single kind or two or more kinds, and when two or more types are used, the content ratio of the raw materials may be variously set according to the design of the manufacturer.

For example, kelp and sea mustard are prepared at the same weight ratio, and the prepared kelp and the seaweed are firstly washed, and the impurities attached to the kelp and the seaweed are firstly washed.

In addition, the kelp and the seaweed, from which the first impurities are removed, are washed with ethanol to remove impurities remaining in the kelp and the seaweed (S1710).

Thereafter, the brown algae from which the impurities are removed are dried so that the moisture content is 20% or less (for example, the moisture content is 15% to 20%).

At this time, the drying method may be dried through a dryer (not shown) or naturally dried at room temperature.

For example, the brown algae containing the kelp and the seaweed, from which the impurities have been removed, are dried through the dryer to a moisture content of the brown algae of 20% or less (S1720).

Thereafter, the dried brown algae and an aqueous solution of sodium hydroxide (for example, a 1.5 wt% aqueous solution of sodium hydroxide) are mixed at a weight ratio of 1: 0.7 to prepare a mixture.

Further, the brown algae mixed with the sodium hydroxide aqueous solution through a heater (not shown) is boiled (or heated) at a temperature ranging from 180 ° C to 220 ° C (generally 200 ° C) for 50 minutes to 70 minutes ).

For example, 35 kg of the aqueous sodium hydroxide solution is mixed with 50 kg of the dried brown algae, and the aqueous solution of sodium hydroxide mixed with the brown algae is boiled at 180 ° C to 220 ° C for 60 minutes by a heater (S1730).

Thereafter, the boiled mixture is centrifuged through a centrifugal separator (not shown) to remove the aqueous solution and the precipitate, and to secure (or obtain / prepare) the first residue material. At this time, the boiled mixture may be cooled at room temperature for a preset time of 1 hour to 24 hours, and the cooled mixture may be centrifuged to remove the aqueous solution and the precipitate, thereby securing the first residue material.

For example, the heated mixture is centrifuged through the centrifugal separator to remove the aqueous solution and the precipitate, and the first residue material is secured (S1740).

Thereafter, the first residual material is filtered through a filter paper (e.g., No. 2 filter paper (Whatman plc., Kent, UK) to secure (or obtain / prepare) a second residual material .

For example, the first residual material is filtered through the filter paper to secure a second residual material (S1750).

Thereafter, the second residue material is gamma-processed through a gamma processor (not shown), and a decomposition promoter 320 using brown algae is prepared through a sterilization process.

That is, the cobalt-60 radioactive isotope (1.17 MeV) is irradiated to the second residual material through the gamma processor for 8 seconds to 12 seconds (generally 10 seconds) to remove the sterilized decomposition promoter 320 ).

For example, the gamma processing unit performs a gamma processing function on the second residue material to perform a sterilization treatment on the harmful group, bacteria, etc. remaining in the second residue material, and the sterilization treatment decomposition promoter 320 (S1760).

As described above, the embodiment of the present invention can provide an environmentally friendly airlaid layer by thermally compressing a decomposition promoter using natural pulp and brown algae to produce an airlaid layer.

In addition, in the embodiment of the present invention, as described above, when the superabsorbent resin contained in the pad absorbs the liquid phase and changes into a gel state, the superabsorbent resin changed into the gel state is decomposed with the brown alga Accelerates the decomposition speed of the superabsorbent resin by decomposing the superabsorbent resin into a treatable liquid state that helps to preserve the environment, not waste, and can prevent environmental pollution and lipid contamination.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or essential characteristics thereof. Therefore, the embodiments disclosed in the present invention are intended to illustrate rather than limit the scope of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of equivalents should be construed as falling within the scope of the present invention.

In the present invention, an airlaid layer is produced by thermocompression of a decomposition accelerator using natural pulp and brown algae. When a superabsorbent resin absorbs a liquid phase and changes into a gel state, a superabsorbent resin changed into a gel state, It is possible to provide an environmentally friendly airlaid layer by reacting with the decomposition promoting agent using the brown algae contained in the laid layer and thus being widely used in the pad field, the sanitary napkin field, the diaper field, the eye mask field, .

10: pad 100: back sheet
200: absorbing layer 300: air-laid layer
400: topsheet 110, 410: flap
210: first nonwoven fabric 220: superabsorbent resin (SAP)
230: second nonwoven fabric 310: natural pulp / pulp powder
320: decomposition accelerator

Claims (10)

A method of manufacturing a pad including an airlaid layer using brown algae,
Producing an absorbent layer absorbing and storing secretions secreted from a female body;
Mixing the natural pulp with a decomposition promoting agent using brown algae, and then thermally compressing the natural pulp and the decomposition promoting agent to prepare an airlaid layer;
Forming the airlaid layer so as to surround the absorbent layer so that the absorbent layer does not leak to the outside;
Forming a backsheet on a lower portion of the airlaid layer surrounding the absorbent layer; And
And forming a topsheet on top of the airlaid layer surrounding the absorbent layer. The method according to claim 1,
Wherein the step of fabricating the absorbent layer comprises:
Placing a first nonwoven fabric and a second nonwoven fabric on a lower portion and an upper portion of a superabsorbent polymer (SAP), respectively; And
And forming the absorbent layer by pressing the first nonwoven fabric and the second nonwoven fabric, which are respectively located at the lower portion and the upper portion of the superabsorbent resin, to form the absorbent layer. The method according to claim 1,
Wherein the step of fabricating the absorbent layer comprises:
Wherein the pulp powder and the superabsorbent resin are mixed to form an absorbent paper having a preset cross-sectional area and thickness. The method according to claim 1,
The periphery of the back sheet and the top sheet is heat-sealed so that the secretion is absorbed by the absorbent layer, the airlaid layer surrounding the absorbent layer is not exposed to the outside, and a space sealed by the back sheet and the top sheet is formed. The method of manufacturing a pad including an airlaid layer using brown algae. The method according to claim 1,
The decomposition promoting agent using the brown algae is,
A step of washing the brown algae containing at least one of sea tangle, seaweed, seaweed, mackerel, mulberry, rhubarb and mugwort using ethanol to remove impurities from the brown algae;
Drying the brown algae from which the impurities have been removed to a moisture content of 20% or less;
Mixing the dried brown algae with an aqueous solution of sodium hydroxide in a weight ratio of 1: 0.7 to prepare a mixture;
Boiling the mixture by a heater at a temperature ranging from 180 ° C to 220 ° C for 50 minutes to 70 minutes;
Centrifuging the boiled mixture by a centrifugal separator to remove the aqueous solution and the precipitate to secure the first residue material;
Filtering the first residue material by a filter paper to secure a second residue material; And
The method of manufacturing a pad including an airlaid layer using a brown algae according to claim 1, wherein the second residue is subjected to a gamma treatment by a gamma processor to prepare a degradation promoter using the brown alga . The method according to claim 1,
Wherein when the superabsorbent resin contained in the absorbent layer absorbs the secretion, the superabsorbent resin absorbs the secretion and changes from a powder state to a gel state, thereby increasing the volume of the superabsorbent resin;
As the volume of the superabsorbent resin increases, the superabsorbent resin contacts the decomposition promoter contained in the airlaid layer, and the superabsorbent resin reacts with the decomposition promoter in accordance with the contact.
A step of liquefying the superabsorbent resin as the superabsorbent resin reacts with the decomposition promoter; And
Further comprising the step of discharging the liquefied superabsorbent resin to the outside. The method of manufacturing a pad including an airlaid layer using a brown algae. In a pad including an airlaid layer using brown algae,
An absorbent layer absorbing and storing secretions secreted from the female body;
An airlaid layer formed by mixing natural pulp with a decomposition promoting agent using brown algae, thermo-compressing the natural pulp mixed with the decomposition promoter, and wrapping the absorbent layer so as to prevent the absorbent layer from leaking to the outside,
A back sheet formed on a lower portion of the airlaid layer surrounding the absorbent layer; And
And an air-laid layer using brown algae comprising a topsheet formed on top of the airlaid layer surrounding the absorbent layer. 8. The method of claim 7,
The absorbent layer
Superabsorbent resin;
A first nonwoven fabric formed under the superabsorbent resin; And
And a second nonwoven fabric formed on the upper side of the superabsorbent resin,
Wherein the first nonwoven fabric and the second nonwoven fabric have a thickness
Wherein the pads are pressed against each other. 8. The method of claim 7,
Wherein the back sheet and the top sheet are made of a metal,
The periphery of the back sheet and the top sheet is heat-sealed so that the secretion is absorbed by the absorbent layer, the airlaid layer surrounding the absorbent layer is not exposed to the outside, and a space sealed by the back sheet and the top sheet is formed. Wherein the air layer is formed on the surface of the pad. 8. The method of claim 7,
Wherein when the superabsorbent resin contained in the absorbent layer absorbs the secretion, the superabsorbent resin absorbs the secretion and changes from a powder state to a gel state, the volume of the superabsorbent resin increases, and the superabsorbent resin As the volume of the resin increases, the superabsorbent resin contacts the decomposition promoter contained in the airlaid layer, and the superabsorbent resin and the decomposition promoter react with each other in accordance with the contact, and the superabsorbent resin and the decomposition promoter Absorbing resin is liquefied and the liquefied superabsorbent resin is discharged to the outside as the reaction of the air-laid layer with the air-laid layer occurs.

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