KR20140028524A - Disposable absorbent article and preparation method thereof - Google Patents
Disposable absorbent article and preparation method thereof Download PDFInfo
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- KR20140028524A KR20140028524A KR1020120094989A KR20120094989A KR20140028524A KR 20140028524 A KR20140028524 A KR 20140028524A KR 1020120094989 A KR1020120094989 A KR 1020120094989A KR 20120094989 A KR20120094989 A KR 20120094989A KR 20140028524 A KR20140028524 A KR 20140028524A
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- Prior art keywords
- sheet
- hydrophilic
- absorbent article
- hydrophobic
- disposable absorbent
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/51—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the outer layers
- A61F13/511—Topsheet, i.e. the permeable cover or layer facing the skin
- A61F13/51104—Topsheet, i.e. the permeable cover or layer facing the skin the top sheet having a three-dimensional cross-section, e.g. corrugations, embossments, recesses or projections
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/51—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the outer layers
- A61F13/511—Topsheet, i.e. the permeable cover or layer facing the skin
- A61F13/51121—Topsheet, i.e. the permeable cover or layer facing the skin characterised by the material
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/15577—Apparatus or processes for manufacturing
- A61F13/15707—Mechanical treatment, e.g. notching, twisting, compressing, shaping
- A61F2013/15715—Shaping or making outer layers
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/51—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the outer layers
- A61F2013/51002—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the outer layers with special fibres
- A61F2013/51023—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the outer layers with special fibres being polymeric fibres
- A61F2013/5103—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the outer layers with special fibres being polymeric fibres being hydrophobic
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/51—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the outer layers
- A61F2013/51059—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the outer layers being sprayed with chemicals
- A61F2013/51066—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the outer layers being sprayed with chemicals for rendering the surface hydrophilic
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/51—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the outer layers
- A61F13/511—Topsheet, i.e. the permeable cover or layer facing the skin
- A61F13/513—Topsheet, i.e. the permeable cover or layer facing the skin characterised by its function or properties, e.g. stretchability, breathability, rewet, visual effect; having areas of different permeability
- A61F2013/51338—Topsheet, i.e. the permeable cover or layer facing the skin characterised by its function or properties, e.g. stretchability, breathability, rewet, visual effect; having areas of different permeability having improved touch or feeling, e.g. smooth film
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- Health & Medical Sciences (AREA)
- Epidemiology (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Absorbent Articles And Supports Therefor (AREA)
Abstract
The present invention relates to a disposable absorbent article comprising a surface sheet, an absorbent body and a back sheet, the surface sheet comprising a hydrophobic nonwoven sheet in which a plurality of hydrophilized depressions are arranged.
Description
The present invention relates to a disposable absorbent article and a method for manufacturing the same, and more particularly, to a disposable absorbent article and a method for manufacturing the same, which can reduce skin irritation while preventing the absorbed menstrual blood from reappearing on the skin.
The hygiene absorbent article includes a surface sheet for passing body fluids (for example, menstrual blood, etc.) that are contacted with the skin of a user and discharged by a physiological action, an absorber for absorbing and retaining the body fluid that has passed through the surface sheet, and a lower side of the absorber. And a back sheet positioned so that the body fluid retained by the absorbent does not leak, and optionally an absorbent transfer layer for transferring the body fluid supplied through the surface sheet to the absorbent between the surface sheet and the absorbent body. .
In general, the surface sheet is a sheet in contact with the user's skin. Therefore, the surface sheet is a non-woven fabric or a film having a soft touch to the user's skin, such as a perforated film, a spun-lace nonwoven fabric, and a through-air bonding nonwoven fabric. I use it.
However, in the art, a hydrophilic nonwoven fabric such as a nonwoven fabric made of hydrophilic fibers or a nonwoven fabric formed by mixing a small amount of hydrophobic fibers together with hydrophilic fibers is used in order to quickly absorb body fluids into a surface sheet in contact with the user's skin. .
Conventional surface sheets made of such hydrophilic nonwoven sheets can absorb body fluids quickly due to their hydrophilicity. However, a part of the body fluid absorbed in the surface sheet was not delivered to the absorber, but remained in the surface sheet and reappeared on the skin. In addition, due to the remaining body fluid, bacteria and the like grow, there is an unpleasant smell, the skin trouble occurs, and also cause a discomfort, etc., there is a problem of lowering the user's fit.
In the present invention, while rapidly absorbing body fluids (for example, menstrual blood, etc.) when worn by the user, the surface sheet is minimized in contact with the skin, thereby preventing the absorbed body fluids from reappearing on the user's skin and reducing skin irritation. An object of the present invention is to provide a disposable absorbent article and a method of manufacturing the same.
SUMMARY OF THE INVENTION The present invention provides a disposable absorbent article having a surface sheet comprising a hydrophobic nonwoven sheet having a plurality of hydrophilized depressions arranged to solve the above object.
In addition, the present invention comprises the steps of transferring the hydrophilic emulsion to the emboss surface of the embossing roller through a hydrophilic emulsion transfer roller that rotates in engagement with the embossing roller; Passing a hydrophobic nonwoven sheet between the rotating embossing roller and the rubber roller to form a plurality of depressions in the hydrophobic nonwoven sheet; A method of manufacturing a disposable absorbent article comprising the step of applying a hydrophilic emulsion delivered to the embossed surface of the embossing roller to the formed depression, wherein the depression forming step and the hydrophilic emulsion coating step are performed simultaneously or continuously. to provide.
In addition, the present invention comprises the steps of transferring the hydrophilic emulsion to the emboss surface of the embossing roller through a hydrophilic emulsion transfer roller that rotates in engagement with the embossing roller; Laminating the hydrophobic nonwoven sheet and the hydrophilic nonwoven sheet to form a laminated sheet; Passing the laminated sheet between the rotating embossing roller and the rubber roller to form a plurality of depressions in the hydrophobic nonwoven sheet; And applying a hydrophilic emulsion delivered to the emboss surface of the embossing roller to the formed depression, wherein the depression forming step and the hydrophilic emulsion application step are performed simultaneously or continuously. To provide.
In addition, the present invention provides a hydrophobic nonwoven sheet in which a plurality of hydrophilized depressions are arranged.
Disposable absorbent articles according to the present invention includes a hydrophobic nonwoven sheet having a plurality of hydrophilized depressions arranged as a surface sheet, so that the body fluid (eg, menstrual blood, etc.) is quickly absorbed through the hydrophilized depressions when the user wears the absorber Since the contact area between the surface sheet and the skin is reduced, the absorbed body fluid can not only be prevented from reappearing on the user's skin, but also skin irritation can be alleviated.
1 is a plan view showing a disposable absorbent article according to an example of the present invention.
FIG. 2 is a cross-sectional view of the disposable absorbent article of FIG. 1 taken along line AA. FIG.
3 is a cross-sectional view of the disposable absorbent article according to another example of the present invention as shown in FIG. 2.
Fig. 4 shows the shape of the depression formed in the surface sheet of the present invention.
5 schematically illustrates a process for making a disposable absorbent article in accordance with an example of the present invention.
6 schematically illustrates a process for manufacturing a disposable absorbent article according to another example of the present invention.
Hereinafter, the present invention will be described.
In the present invention, "disposable absorbent article" is a product that absorbs body fluids (eg, menstrual blood, vaginal discharge, cold / cold discharge, urine, etc.) that are excreted by various physiological actions, and do not wash, restore, or reuse after use. Say Examples include diapers, pant training pants, adult incontinence products, absorbent underwear, feminine hygiene products and feeding pads.
Disposable absorbent articles according to the invention are characterized in that they comprise a hydrophobic nonwoven sheet having a plurality of hydrophilized depressions arranged as a surface sheet. As a result, the disposable absorbent article of the present invention rapidly absorbs body fluid (eg, menstrual blood, etc.) through a hydrophilized depression when worn, and is delivered to the absorbent body or the absorbent delivery layer. Not only can be prevented, but also skin irritation can be alleviated because the contact area of the surface sheet with the skin is reduced.
1 to 3, a disposable
In addition, by including a plurality of
In addition, since the
Disposable
In addition, as shown in FIG. 3, the disposable
Hereinafter, referring to Figures 1 to 4, each configuration of the disposable absorbent article according to the present invention will be described.
<Disposable absorbent article>
(1)
In the present invention, the
However, the
Unlike the
The hydrophilic emulsion may impart hydrophilicity to the hydrophobic nonwoven fabric, and is not particularly limited as long as it is known in the art. Examples of the hydrophilic emulsion include polyethylene glycol ester, polyoxyethylene alkyl sulfate, alkyl phosphate ester potassium salt, polyoxyethylene alkyl ester, alkyl sulfonate sodium salt, polyester, polyester modified silicone, sulfosuccinate, polyoxyethylene Amide ether, polyglycerol polyester, and the like, but is not limited thereto. These may be used alone or in combination of two or more. According to one example of the present invention, polyethylene glycol ester is used as a hydrophilic emulsion.
The content (coating amount) of the hydrophilic emulsion is not particularly limited and may be, for example, about 0.5 to 3 gsm.
The area ratio of such a depression is not particularly limited, but when it is about 20 to 50% based on the total area of the surface sheet, the friction area between the skin of the user and the surface sheet is minimized, and the body fluids excreted by physiological action are faster. Because it can be absorbed and delivered to the absorbent or absorbent delivery layer, it is possible to minimize the reappearance of the absorbed body fluids while maximally reducing skin irritation.
In addition, the shape of the recess is not particularly limited, and may be, for example, continuous linear or polygonal such as a circle or a square, but is not limited thereto (see FIG. 4).
The size of the depression is not particularly limited, and can be variously adjusted in consideration of the shape and area ratio of the depression. For example, when the shape of the depression is a continuous linear as shown in Fig. 4 (a), the size (width) of the depression may be about 0.5 to 3 mm, preferably about 0.8 to 2.5 mm. In addition, when the shape of the depression is a circle shown in Figure 4 (b), the size (diameter) of the depression may be about 0.5 to 2 mm. In addition, as shown in FIG. 4C, when the shape of the depression is a polygon such as a rectangle, a diagonal length of the depression may be about 1 to 3 mm.
In addition, the depth of the depression is not particularly limited. For example, when the depth of the depression is about 1 to 1.5 mm based on the case where the area ratio of the depression is about 40 to 50%, the inner wall of the depression is at an inclination of 45 °. Since it is formed to be inclined, the body fluid can effectively flow into the lower side of the depression to be absorbed and transferred to the absorption transfer layer or the absorbent body. In addition, when the depth of the depression is in the above range, the surface sheet becomes more bulky to soften the feel of the surface sheet, so that the absorbent article is less irritating to the user's skin even if the absorbent article is in direct contact with the wearer's skin. Less trouble may occur on the skin.
In addition, the separation distance between the one recessed portion and the other recessed portion is not particularly limited, but when it is about 2 to 3 mm, the bulky property is effectively exerted, which may cause less trouble on the user's skin.
Examples of hydrophobic nonwoven sheets usable in the present invention may be nonwoven sheets containing hydrophobic fibers or hydrophobic treated nonwoven sheets.
Here, the hydrophobic fiber refers to a fiber produced by hydrophobizing surface treatment of the surface of the fiber spun with a hydrophobic emulsion during fiber spinning, or a fiber showing hydrophobicity such as polyethylene fiber. Such hydrophobic fibers are preferably hydrophobic staple fibers, and non-limiting examples of hydrophobic staple fibers include N280 of HUVIS, ESC341 and ESC317 of ES FiberVision.
An example of a hydrophobic nonwoven sheet containing the hydrophobic fibers is a nonwoven sheet obtained by mechanically, chemically and thermally bonding (bonding) a web made of hydrophobic fibers. In addition, another example of the hydrophobic nonwoven sheet is obtained by mechanically, chemically and thermally bonding a web composed of a hydrophilic fiber or a hydrophilized surface-treated fiber (hereinafter, hydrophilic fiber) together with a hydrophobic fiber. There is also a nonwoven sheet. At this time, the content of the hydrophilic fiber is not particularly limited, but if the amount of about 10 to 20% by weight based on the total weight of the total fiber, because the absorption rate of the
In addition, the hydrophobic treated nonwoven fabric sheet is prepared by hydrophobic surface treatment of a nonwoven fabric sheet surface obtained by bonding a web made of fibers with a hydrophobic emulsion known in the art.
Such nonwoven sheets have various kinds of sheets according to a method of bonding a web made of fibers. For example, there is a thermal bonding non-woven fabric, a spunbond nonwoven fabric, a spun-lace nonwoven fabric, a through-air bonding nonwoven fabric, and the like, but are not limited thereto. Among these, when aeration bonding nonwoven fabric is used, the wearer's skin friction can be minimized. According to an example of the present invention, when using a hydrophobic breathable bonded nonwoven fabric obtained through the air-bonded web (web) made of hydrophobic fibers, while maintaining the smoothing while minimizing the skin friction of the wearer can be further improved comfort .
Examples of the fibers include natural fibers such as cotton, silk, wool, hemp, regenerated fibers such as rayon, and synthetic fibers such as polyester, polyethylene, polypropylene, and polyethylene terephthalate. Can be used in combination. Among these, polyethylene, polypropylene, etc. are preferable.
In addition, the thickness (fineness) of the fiber is not particularly limited, but when the thickness of the fiber is about 1.0 to 3 denier (denier, d), the skin irritation is minimized when wearing the absorbent article to minimize the occurrence of skin side effects It is possible to improve the instantaneous absorption function.
In addition, the length of the fiber is not particularly limited, but if it is about 30 to 58 mm, while the workability of the carding process during the manufacturing of the nonwoven fabric can be improved, the uniformity of the surface of the nonwoven fabric is improved to minimize skin friction of the wearer. can do.
The basis weight of the nonwoven fabric containing such fibers is not particularly limited, but when it is about 20 to 50 g / m 2, it is possible to soften the surface feel while improving absorption, thereby minimizing the occurrence of skin side effects.
(2) Absorption transport layer
The female disposable
The
In this case, as illustrated in FIG. 3, the
Examples of the hydrophilic nonwoven sheet include a nonwoven sheet obtained by mechanically, chemically and thermally bonding (bonding) a web made of hydrophilic fibers; Nonwoven sheets obtained by mechanically, chemically, and thermally bonding a web of hydrophilic fibers and hydrophobic fibers; Or a hydrophilic nonwoven sheet, but is not limited thereto. As an example of the present invention, a nonwoven fabric sheet (basic weight: about 20 to 25 gsm) obtained by bonding a web made of polyethylene / polypropylene composite fibers (fineness: about 2 denier) may be used as the hydrophilic nonwoven sheet.
Such nonwoven sheets have various types of nonwoven sheets, depending on how the web of fibers is bonded. For example, there is a thermal bonding non-woven fabric, a spunbond nonwoven fabric, a spun-lace nonwoven fabric, a through-air bonding nonwoven fabric, and the like, but are not limited thereto.
Examples of the fibers include natural fibers such as cotton, silk, wool, hemp, regenerated fibers such as rayon, and synthetic fibers such as polyester, polyethylene, polypropylene, and polyethylene terephthalate. Can be used in combination. Among these, polyethylene, polypropylene, etc. are preferable.
The thickness (fineness) of the fiber is not particularly limited, but when the thickness of the fiber is about 1.5 to 2.0 denier, the body fluid absorbed by the surface sheet can be quickly absorbed and delivered to the absorber.
In addition, the length of the fiber is not particularly limited, but if it is about 30 to 58 mm, the workability of the carding (carding) process when manufacturing the nonwoven fabric can be improved.
The basis weight of the nonwoven fabric containing such fibers is not particularly limited, but when it is about 18 to 30 g / m 2, it may exhibit a good absorption rate of 3 seconds or less.
(3) The absorber
In the present invention, the
The
The
Specifically, the absorbent core may include a fluff pulp and a super absorbent polymer. The fluff pulp is obtained by pulverizing a fibrous web or a wood pulp on a sheet. The superabsorbent resin is not particularly limited as long as it is an absorbent resin used for absorbing body fluids in the art, and examples thereof include resins polymerized using polyacrylic acid as an essential material.
The amount of fluffy pulp may be about 30 to 50% by weight based on the total weight of the absorbent core, and the superabsorbent resin may be about 10 to 40% by weight based on the total weight of the absorbent core.
The core wrap sheet supports the absorbent core and prevents the body fluids absorbed in the absorbent core from leaking out, and prevents the absorbent core from being broken or bundled.
Such a core wrap sheet may be laminated to the top and / or bottom of the absorbent core described above, or it may be bonded to the absorbent core in the form of wrapping the absorbent core. Preferably, when the core wrap sheet is laminated to both the top and bottom of the absorbent core, or adhered in a wraparound manner, the absorbent core can be supported more firmly and the leakage of body fluids more effectively .
The core wrap sheet may be a tissue or a non-woven fabric having a hydrophilic function. The manner of imparting a hydrophilic function to the nonwoven fabric is appropriately selected depending on the kind of the nonwoven fabric. For example, the thermally bonded or vented bonded nonwoven fabric may have a hydrophilic function by being produced using a fiber treated with a surfactant known in the art, and in the case of a spunbonded nonwoven fabric, a raw material (e.g., polypropylene or Polyethylene) is spun at a high temperature to produce a nonwoven fabric, and then the nonwoven fabric itself is treated with a surfactant known in the art to have a hydrophilic function.
Examples of the nonwoven fabric include spunbonded nonwoven fabric, thermally bonded nonwoven fabric, meltblown nonwoven fabric, spunbond-meltblown-spunbond nonwoven fabric, and examples of the nonwoven fabric include polyester, polyethylene, . Preferably, the tissue is subjected to wet strength treatment.
The basis weight of the nonwoven fabric used in the core wrap sheet is not particularly limited, but when adjusted in the range of about 10 to 15 g / m 2 according to the type of the nonwoven fabric, the core wrap sheet firmly supports the absorbent core and more effectively prevents leakage of body fluids. can do. For example, the spunbond nonwoven or meltblown nonwovens preferably have a basis weight in the range of about 10 to 15 g / m 2, and the thermally bonded nonwovens preferably have a basis weight of about 15 to 18 g / m 2.
(4) a liquid impermeable back sheet
In the present invention, the
The
<Method of manufacturing disposable absorbent article>
The above-mentioned disposable absorbent article may be manufactured through various methods, for example, but not limited thereto.
According to one embodiment of the present invention, a disposable absorbent article comprises: delivering a hydrophilic emulsion to an emboss surface of the embossing roller through a hydrophilic emulsion delivery roller which rotates in engagement with the embossing roller; Passing a hydrophobic nonwoven sheet between the rotating embossing roller and the rubber roller to form a plurality of depressions in the hydrophobic nonwoven sheet; Including the step of applying a hydrophilic emulsion delivered to the embossed surface of the embossing roller to the formed depression, the depression forming step and the hydrophilic emulsion coating step may be prepared by a manufacturing method performed at the same time or continuously. .
In addition, according to another embodiment of the present invention, the disposable absorbent article comprises the steps of transferring the hydrophilic emulsion to the emboss surface of the embossing roller through a hydrophilic emulsion delivery roller that rotates in engagement with the embossing roller; Laminating the hydrophobic nonwoven sheet and the hydrophilic nonwoven sheet to form a laminated sheet; Forming a plurality of depressions in the hydrophobic nonwoven sheet by passing the laminated sheet between the rotating embossing roller and the rubber roller to be engaged with each other; And applying a hydrophilic emulsion delivered to the emboss surface of the embossing roller to the formed depression, wherein the depression forming step and the application of the hydrophilic emulsion may be performed simultaneously or continuously. have.
Referring to Figures 5 and 6, it will be described in more detail by dividing the disposable absorbent article manufacturing method of the present invention in each step as follows.
First, the
In the present invention, the coating
The hydrophilic
The linear velocity of the hydrophilic emulsion conveying roller is not particularly limited, and is preferably adjusted in consideration of the rotational speed of the embossing roller, the feed rate of the hydrophobic nonwoven sheet, the viscosity of the hydrophilic emulsion, and the like. For example, the linear velocity of the hydrophilic emulsion delivery roller may be about 100 to 350 m / min.
The
In addition, the
The shape of the
In addition, the size of the
In addition, the height of the
In addition, the separation distance between the one emboss and the other emboss is not particularly limited, it is preferable to select an appropriate embossing roller in consideration of the separation distance between the depressions to be formed. For example, when it is desired to form a depression having a separation distance of about 1.5 to 3.0 mm, embossing rollers having embosses spaced about 1.5 to 3.2 mm may be used.
On the surface of the
The linear velocity of the embossing roller is not particularly limited, and it is appropriate to adjust the linear velocity of the hydrophilic emulsion transfer roller, the feed rate of the sheet, and the like. For example, the linear velocity of the embossing roller may be about 100 to 350 m / min.
Thereafter, a plurality of
As shown in FIG. 6, the
The linear pressure applied to the hydrophobic nonwoven sheet by the embossing roller is not particularly limited, and it is appropriate to adjust in consideration of the elasticity and thickness of the hydrophobic nonwoven sheet. For example, the linear pressure may be about 20 to 90 N / mm.
Subsequently, in step S102, the
Specifically, as shown in FIG. 6, when the hydrophobic
On the other hand, as shown in Figure 6, between the
The method of laminating the hydrophobic nonwoven sheet and the hydrophilic nonwoven sheet is not particularly limited, and for example, the hydrophobic nonwoven sheet and the hydrophilic nonwoven sheet may be physically, chemically and thermally bonded.
The manufacturing method according to the invention may optionally further comprise the step of drying the applied hydrophilic emulsion (100) (see Figure 6).
It is preferable to adjust the said drying temperature according to the kind and application amount of a hydrophilic emulsion. For example, the drying temperature may be about 90 to 140 ℃.
By performing each step as described above, the
On the other hand, the present invention provides a hydrophobic nonwoven sheet in which a plurality of hydrophilized depressions are arranged.
Although the present invention has been described with reference to the drawings, it is merely exemplary, and it is common in the art that various modifications and changes can be made without departing from the spirit and scope of the invention as indicated by the appended claims. Anyone with knowledge can easily know. In addition, all details may be replaced by other technically equivalent elements.
1: disposable absorbent article,
10: surface sheet, 11: depression,
20: absorber, 30: back sheet,
40: absorption transfer layer, 41: second depression,
50: laminated sheet,
100: hydrophilic emulsion, 200: hydrophilic emulsion delivery roller,
300: embossing roller, 301: emboss,
400: rubber roller, 500: dryer
Claims (15)
Passing a hydrophobic nonwoven sheet between the rotating embossing roller and the rubber roller to form a plurality of depressions in the hydrophobic nonwoven sheet;
Applying a hydrophilic emulsion delivered to the emboss surface of the embossing roller to the formed depression
, ≪ / RTI &
The method of claim 1, wherein the step of forming the recess and the step of applying the hydrophilic emulsion are performed simultaneously or continuously.
Laminating the hydrophobic nonwoven sheet and the hydrophilic nonwoven sheet to form a laminated sheet;
Passing the laminated sheet between the rotating embossing roller and the rubber roller to form a plurality of depressions in the hydrophobic nonwoven sheet; And
Applying a hydrophilic emulsion delivered to the emboss surface of the embossing roller to the formed depression
, ≪ / RTI &
The method of claim 1, wherein the step of forming the recess and the step of applying the hydrophilic emulsion are performed simultaneously or continuously.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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KR1020120094989A KR20140028524A (en) | 2012-08-29 | 2012-08-29 | Disposable absorbent article and preparation method thereof |
Applications Claiming Priority (1)
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KR1020120094989A KR20140028524A (en) | 2012-08-29 | 2012-08-29 | Disposable absorbent article and preparation method thereof |
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KR20140028524A true KR20140028524A (en) | 2014-03-10 |
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Application Number | Title | Priority Date | Filing Date |
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KR1020120094989A KR20140028524A (en) | 2012-08-29 | 2012-08-29 | Disposable absorbent article and preparation method thereof |
Country Status (1)
Country | Link |
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KR (1) | KR20140028524A (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
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CN105714561A (en) * | 2015-12-28 | 2016-06-29 | 福建恒安集团有限公司 | Finishing agent of emulsion composition for polypropylene spunbonded nonwoven |
KR20180113228A (en) * | 2017-04-05 | 2018-10-16 | 코오롱글로텍주식회사 | Non-woven fabric for Disposable absorbent articles |
US11324641B2 (en) | 2017-01-31 | 2022-05-10 | The Procter & Gamble Company | Shaped nonwoven |
US11427943B2 (en) | 2017-01-31 | 2022-08-30 | The Procter & Gamble Company | Shaped nonwoven |
CN117243759A (en) * | 2023-11-15 | 2023-12-19 | 露乐健康科技股份有限公司 | Liquid collecting absorption structure and sanitary article |
CN117257552A (en) * | 2023-11-23 | 2023-12-22 | 露乐健康科技股份有限公司 | Liquid storage absorption structure with detection function and sanitary article |
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2012
- 2012-08-29 KR KR1020120094989A patent/KR20140028524A/en not_active Application Discontinuation
Cited By (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105714561A (en) * | 2015-12-28 | 2016-06-29 | 福建恒安集团有限公司 | Finishing agent of emulsion composition for polypropylene spunbonded nonwoven |
US11666488B2 (en) | 2017-01-31 | 2023-06-06 | The Procter & Gamble Company | Shaped nonwoven |
US11987917B2 (en) | 2017-01-31 | 2024-05-21 | The Procter & Gamble Company | Shaped nonwoven |
GB2571694B (en) * | 2017-01-31 | 2022-07-13 | Procter & Gamble | Shaped nonwoven |
US11427943B2 (en) | 2017-01-31 | 2022-08-30 | The Procter & Gamble Company | Shaped nonwoven |
US11661689B2 (en) | 2017-01-31 | 2023-05-30 | The Procter & Gamble Company | Shaped nonwoven |
US11773521B2 (en) | 2017-01-31 | 2023-10-03 | The Procter & Gamble Company | Shaped nonwoven |
US11324641B2 (en) | 2017-01-31 | 2022-05-10 | The Procter & Gamble Company | Shaped nonwoven |
US11992393B2 (en) | 2017-01-31 | 2024-05-28 | The Procter & Gamble Company | Shaped nonwoven |
US11872112B2 (en) | 2017-01-31 | 2024-01-16 | The Procter & Gamble Company | Shaped nonwoven |
KR20180113228A (en) * | 2017-04-05 | 2018-10-16 | 코오롱글로텍주식회사 | Non-woven fabric for Disposable absorbent articles |
CN117243759A (en) * | 2023-11-15 | 2023-12-19 | 露乐健康科技股份有限公司 | Liquid collecting absorption structure and sanitary article |
CN117243759B (en) * | 2023-11-15 | 2024-03-22 | 露乐健康科技股份有限公司 | Liquid collecting absorption structure and sanitary article |
CN117257552B (en) * | 2023-11-23 | 2024-02-13 | 露乐健康科技股份有限公司 | Liquid storage absorption structure with detection function and sanitary article |
CN117257552A (en) * | 2023-11-23 | 2023-12-22 | 露乐健康科技股份有限公司 | Liquid storage absorption structure with detection function and sanitary article |
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