KR20030010941A - A diaper and method of the same - Google Patents

Abstract

PURPOSE: A process for preparing a disposable diaper without unnecessary a wing-like side portion by forming a film sheet on the inside surface of a leakage-preventing band of a conventional diaper is provided, thereby reducing the cost of production and remaining excellent water resistance. CONSTITUTION: The disposable diaper comprises: a liquid permeable sheet(10); a leakage-preventing band(20) having an elastomer(21) formed in a longitudinal direction on both sides of the liquid permeable sheet; a lower sheet(30) for forming a pocket by being adhered to the liquid permeable sheet; an absorption pad(40) for being received in the pocket; a liquid permeable film sheet(50) for preventing leakage of the absorbed liquid to the outside; an outer sheet(60) for forming an outer surface while wearing the diaper and a fastening unit, wherein the leakage-preventing band contains a liquid-impermeable film sheet(22) in its inside.

Description

Disposable diaper and its manufacturing method {A diaper and method of the same}

The present invention relates to a disposable diaper and a method of manufacturing the same, and more particularly, by forming a film sheet on the inner surface of the leak-proof band of the conventional diaper to eliminate the side wing portion, which is an unnecessary part of the diaper, and particularly in the process of manufacturing the diaper. The present invention relates to a disposable diaper and a method of manufacturing the same so as to minimize the manufacturing cost by suppressing the amount of film sheets consumed.

Commonly used disposable absorbent products are products that absorb body fluids, such as urine, feces, menstrual discharge and vaginal discharge, which are excreted by various physiological actions of humans, which are disposable diapers used by infants or incontinence. Women's sanitary napkins and panty liners.

In particular, disposable diapers include a liquid-permeable liquid-permeable sheet that is in direct contact with the wearer's skin when worn; A leakage preventing band preventing leakage of secretion on both sides of the liquid permeable sheet; An outer nonwoven fabric sheet attached to an inner surface of the liquid impermeable film sheet and forming an outer surface when worn; It consists of an absorbent core and a fastening means 70 positioned between the liquid permeable sheet and the outer nonwoven sheet.

With reference to the accompanying drawings will be described in detail a conventional disposable diaper. A plan view of a conventional disposable diaper is shown in FIG. 1, and a cross-sectional view taken along line A-A of FIG. 1 is shown in FIG. 2.

As shown, a conventional disposable diaper includes a liquid permeable sheet 110; A leakage preventing band 120 having an elastic body 121 formed in a longitudinal direction on both sides of the upper surface of the liquid permeable sheet 110; A lower sheet 130 bonded to the liquid permeable sheet 110 to form a pocket; An absorbent pad 140 accommodated in the pocket; A liquid impermeable film sheet 150 for preventing the liquid absorbed from the absorption pad 140 from being transmitted to the outside; It consists of an outer sheet 160 to form an outer surface when worn and a fastening means 170 to maintain a worn state when the diaper is worn. In addition to the above configuration, the conventional diaper further includes a side wing 180 having an elastic body 181 for preventing the liquid absorbed from the absorbent pad from being discharged to the outside.

The liquid permeable sheet 110 is a synthetic nonwoven fabric as a main material to induce the body fluid to be quickly absorbed into the absorbent pad 140, the synthetic nonwoven fabric is typically delivered to the absorbent pad 140 quickly Hydrophobic fibers are used as hydrophilic treatments. In addition, the film sheet 150 is formed in order to prevent the liquid absorbed from the absorbent pad 140 to be transmitted to the outside mainly uses a polyethylene film, the leakage preventing band 120 is a fountain by repeated urination It primarily plays a role in preventing occurrence.

The diaper is generally processed using a cotton wool wound in a roll to a suitable thickness, forming a pad by applying a moisture absorbent to it and forming an absorbent pad (140); The liquid-permeable sheet 110 is placed on the absorbent pad 140, and the outer sheet 160 is attached to the lower portion of the absorbent pad 140, and the outer sheet 160 is bonded thereto. A sealing step; Forming a leakage preventing band (120) on an upper surface of the liquid permeable sheet (110) after sealing is completed; After the formation of the leak-proof band 120 is manufactured through a post-treatment step of cutting the leg portion and the length portion into the earring formation.

In this case, the lower sheet 130 to which the liquid-impermeable film sheet 150 is adhered is typically used after adhering the entire film to the entire sheet such as a nonwoven fabric, and unnecessary parts are removed in the post-treatment step.

Therefore, there is a problem in that the manufacturing process of the conventional diaper and the diaper manufactured through the process extends the use of the film to an unnecessary part, such as the side wing 180, which does not require waterproofing, thereby increasing the manufacturing cost. . In particular, since the amount of the film used is directly related to the manufacturing cost of the diaper, the amount of the film serves as an important factor in determining the manufacturing cost of the diaper.

Therefore, the present inventors can not only reduce the manufacturing cost by eliminating unnecessary parts of the diaper, but also simplify the structure of the diaper, and in particular, after studying the diaper and the manufacturing method thereof, which can significantly reduce the film usage, which is an increase factor of the manufacturing cost, The present invention has been completed.

The present invention is to provide a disposable diaper and a method of manufacturing the same to improve the structure of the conventional diaper to reduce the manufacturing cost by maintaining excellent waterproofness while eliminating unnecessary side wings.

1 is a plan view of a conventional disposable diaper.

2 is a cross-sectional view taken along the line A-A of FIG.

3 is a plan view of a disposable diaper according to an embodiment of the present invention.

4 is a cross-sectional view taken along the line A-A of FIG.

5 is a wearing state of the diaper according to the present invention.

6 is a view showing a process of manufacturing a lower sheet adhered to a film sheet according to an embodiment of the present invention.

7 is a view showing an adhesive relationship between a film sheet and a nonwoven fabric in a paper roll.

8 is a view showing an adhesive roll according to an embodiment of the present invention.

9 is a view showing another embodiment of the adhesive roll.

<Explanation of symbols for the main parts of the drawings>

10: liquid permeable sheet 20: leakage preventing band 21: elastic body

22 film sheet 30 lower sheet 40 absorption pad

50: film sheet 60: outer sheet 70: fastening means

81: nonwoven fabric supply roll 82: adhesive roll 83: coating roll

84: film feed roll 85,85 ': lamination roll 86,86': first compression roll

87,87 ': Second press roll 88: Winding roll 89,89', 89 ": Tension roll

90,90 ': Guide roll 91: Adhesive reservoir 92: Steel sheet

93: cutter 94: heater 95: intaglio

96 film sheet 97 nonwoven fabric

The present invention to achieve the above object

A liquid permeable sheet; A leakage preventing band having elastic bodies formed in the longitudinal direction on both sides of the upper surface of the liquid permeable sheet; A lower sheet bonded to the liquid permeable sheet to form a pocket; An absorbent pad accommodated in the pocket; A liquid impermeable film sheet for preventing the liquid absorbed from the absorption pad from being transmitted to the outside; In a conventional disposable diaper composed of an outer sheet to form an outer surface when worn and a fastening means 70 to maintain a worn state when the diaper is worn, a liquid impermeable film sheet inside the leakage preventing band. It can be achieved by providing a disposable diaper characterized by forming a.

Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings. However, the present invention is not limited to the present invention, but is provided to aid the understanding of the present invention.

3 is a plan view of a disposable diaper according to an embodiment of the present invention, Figure 4 is a cross-sectional view taken along the line A-A of FIG. As shown

Disposable diaper according to the present invention is a liquid-permeable sheet 10; A leakage preventing band 20 having elastic bodies 21 formed in the longitudinal direction on both sides of the upper surface of the liquid permeable sheet 10; A liquid impervious film sheet 22 attached to a lower surface of the leakage preventing band 20 to prevent secretion from leaking out; A lower sheet 30 bonded to the liquid permeable sheet 10 to form a pocket; An absorbent pad 40 accommodated in the pocket; A liquid impermeable film sheet (50) for preventing the liquid absorbed from the absorbent pad (40) from being transmitted to the outside; It consists of an outer sheet 60 which forms an outer surface when worn and a fastening means 70 which can be kept in a worn state when the diaper is worn.

That is, the present invention is characterized by eliminating unnecessary side wing parts in the related art by forming a liquid impervious film sheet 22 on the lower surface of the leakage preventing band 20 by improving the structure of the conventional diaper.

As such, by forming the film sheet 22 on the lower surface of the leakage preventing band 20, the side wing portion formed in the conventional diaper can be removed, and the leakage prevention band 20 to which the film sheet 22 is attached is excreted outside. It is to prevent the leakage to the. Therefore, the side wing portion of the diaper becomes unnecessary, and even if the side wing portion is removed in this way, the same waterproof property as the conventional diaper is maintained. In particular, the present invention can reduce the use of the film sheet required in this portion by removing the side wing portion in this way has the advantage that the manufacturing cost can be lowered.

5 is a wearing state of the diaper according to the present invention, as shown, the outer surface of the leakage preventing band 20 has a form exposed to the outside. Therefore, the leakage preventing band 20 is to replace the role of the existing side wing portion and at the same time serves to prevent the excretion to flow out.

In order to more effectively provide a disposable diaper having the above configuration, the present invention provides the following manufacturing method.

An absorbent pad forming step of processing to an appropriate thickness using a cotton wool wound on a roll, applying a moisture absorbent thereto to form a pad, and cutting the pad to an appropriate length; A sealing step of placing a liquid permeable sheet on the absorbent pad and sealing the lower sheet on which the liquid impermeable film sheet is adhered to the lower part of the absorbent pad; Forming a leakage preventing band on the upper surface of the liquid permeable sheet after sealing is completed; In the manufacturing method of the disposable diaper comprising a post-treatment step of cutting the leg portion and the length portion to form a diaper after completion of the formation of the leak-proof band,

The lower sheet is bonded to the film sheet used in the sealing step;

The nonwoven fabric supplied from the nonwoven fabric feed roll is transferred to the coating roll, and the adhesive attached to the adhesive roll partially deposited in the adhesive reservoir is transferred to the coating roll and attached to the nonwoven fabric conveyed from the nonwoven fabric feed roll, and the film corresponding to the width of the diaper is A film supplied from a plurality of rolled film feed rolls is transferred to a lamination roll to be laminated with the nonwoven fabric with the adhesive attached thereto, and the film and the nonwoven fabric laminated with the film are transferred to a take-up roll through a plurality of compression rolls, and used.

Leak prevention band in the step of forming the coagulation band;

It provides a method for producing a disposable diaper, characterized in that the liquid impervious film sheet is formed on the attachment surface.

Hereinafter, a method of manufacturing a lower sheet to which a film sheet is bonded among the manufacturing methods of the diaper will be described in more detail with reference to the accompanying drawings.

FIG. 6 is a view illustrating a process of manufacturing a lower sheet to which a film sheet is adhered according to an embodiment of the present invention. As illustrated, a nonwoven fabric supplied from a nonwoven fabric supply roll 81 is transferred to a coating roll 83. The adhesive attached to the adhesive roll 82 partially deposited on the adhesive reservoir 91 is transferred to the coating roll 83 and attached to the nonwoven fabric conveyed from the nonwoven fabric supply roll 81, and corresponds to the width of the diaper. The film supplied from the plurality of film feed rolls 84 on which the film is wound is transferred to the paper rolls 85 and 85 'to be laminated with the nonwoven fabric with the adhesive, and the nonwoven fabric with the film is rolled with a plurality of compression rolls ( 86, 86 ', 87, 87') is transferred to the winding roll 88 is wound. In the drawing, reference numerals 89, 89 ', 89 "are tension rolls, 90, 90' are guide rolls, 92 are steel plates, and 94 are heaters.

First, the nonwoven fabric supplied from the nonwoven fabric supply roll 81 is transferred to the coating roll 83. In keeping with this, the adhesive buried in the adhesive roll 82 partially deposited in the adhesive contained in the adhesive reservoir 91 is transferred to the coating roll 83 and attached to the nonwoven fabric transferred to the coating roll 83.

The adhesive roll 82 is to form an intaglio of a suitable shape, the adhesive is buried throughout the roll including the intaglio portion. The adhesive buried in the adhesive roll 82 is left with the adhesive only in the portion engraved by the thin steel plate 92, and the adhesive in the non-engraved portion is removed. The adhesive buried in the intaglio portion is transferred to the coating roll 83 and attached to the nonwoven fabric conveyed from the nonwoven fabric supply roll 81.

In this case, the coating roll 83 may be embossed to only the portion corresponding to the adhesive attached to the adhesive roll 82, so that the embossed portion is matched with the intaglio portion of the adhesive roll 82. The coating roll 83 may be a roll made of a silicone rubber having a high releasability or a roll coated with a fluororesin in order to transfer the adhesive well to the adherend including the nonwoven fabric. In particular, when using a roll made of silicone rubber, heat conduction is not good, so it is preferable to mount the auxiliary heater 94 around the roll as shown.

In the present invention, a plurality of film feed rolls 84 are provided. The film supply roll 84 is installed as many as the width of the diaper to be waterproof. That is, since the diaper and the diaper is a portion to be cut in the post-treatment step, a plurality of film feed rolls 84 are provided to reduce unnecessary film usage at this portion.

The above-described film supply roll 84 and the nonwoven fabric supply roll 81 may be equipped with an electromagnetic brake and a load cell so as to adjust the tension and speed required by the film and the nonwoven fabric. In particular, by adding a DC motor to the film supply roll 84 and the nonwoven fabric supply roll 81 to adjust the unwinding speed to be able to adjust the more delicate speed and tension than described above. It is easily installable in the art.

The paper rolls 85 and 85 'are rolls in which a film and an adhesive-bonded nonwoven fabric are laminated, and the lower paper roll 95 is preferably a steel roll coated with a fluorocarbon resin or a roll coated with a hard metal. This is to prevent the phenomenon in which the adhesive adheres to the adherend including the nonwoven fabric and the adherend is wound on the roll. In this case, the coating roll 84 and the lower lamination roll 85 may be provided with a height adjusting device to adjust the amount of transfer of the adhesive.

In addition, the 1st press rolls 86 and 86 'and the 2nd press rolls 87 and 87' can use the roll normally performed. For example, the upper pressing rolls 86 'of the first pressing rolls 86 and 86' may be rubber rolls that are commonly used, and the lower pressing rolls 86 may be equipped with a heater to increase adhesion between the film and the nonwoven fabric. In addition, the upper pressing rolls 87 'of the second pressing rolls 87 and 87' are made of rubber rolls that are commonly used, and the lower pressing rolls 87 are made of cooling rolls to solidify the adhesive so that the film and the adhesive cloth are completely adhered to each other. In this case, the adhesive will be completely solidified so that it will not stick to other deposits. The pressing rolls 86, 86 ', 87, 87' can be installed and implemented as needed.

FIG. 7 is a view illustrating an adhesive relationship between a film sheet and a nonwoven fabric in a paper roll, and as shown, the film sheet 96 supplied from a plurality of film feed rolls 84 (see FIG. 6) is transferred to the paper roll 85. It is conveyed and laminated with the nonwoven fabric 97 to which the adhesive is attached. In this case, the film sheet 96 transferred to the paper roll 85 is supplied only by the length of the diaper by the film cutter 93. The cutter may use various means capable of cutting the film into the length of the diaper.

8 is a view showing an adhesive roll according to an embodiment of the present invention, it is possible to use a roll formed with a plurality of small intaglio 95 as shown. The adhesive roll 82 is partially deposited on the adhesive, so that the entire adhesive roll is buried, including the intaglio 95. At this time, the adhesive roll 82 is mounted with a thin steel plate 92 (refer to FIG. 6) so that the adhesive remains only in the intaglio 95 as described above, so that the adhesive of the non-engraved portion is removed. The adhesive buried in the intaglio portion 95 is transferred to the coating roll 83.

9 is a view showing another embodiment of the adhesive roll, as shown in the adhesive roll 82, the film sheet is attached to the nonwoven fabric can be used to form the intaglio 95 only. As such, when the intaglio 95 is formed only at the portion to which the film sheet is attached, the adhesive is buried only in this portion, thereby reducing the amount of adhesive used, and thus reducing the cost.

By using the apparatus having the structure as described above, the film sheet can be attached to the nonwoven fabric corresponding to the width of the diaper, thereby adhering the film to the entire surface of the nonwoven fabric and cutting the film by the required width. It can significantly reduce the manufacturing cost can be significantly reduced.

When the diaper is manufactured by a conventional method using the lower sheet to which the film sheet is attached as described above, the side wing portion of the diaper can be removed, and when the side wing portion is removed, water resistance is presented as a problem.

Therefore, in the present invention, the film sheet is attached to the leakage preventing band in order to maintain waterproofness. Bonding the film sheet to the leakage preventing band can be easily manufactured through a conventional method. By doing in this way, the waterproofness which a normal diaper requires in the said leakage prevention band can be satisfy | filled.

As described above, the present invention removes the side wing portions, which are unnecessary parts of the diaper, by forming a film sheet on the inner side of the leak-proof band of the conventional diaper, and in particular, suppresses the amount of the film sheet that is unnecessarily consumed during the manufacturing of the diaper. It is a useful invention to provide a disposable diaper and a method of manufacturing the same to minimize the manufacturing cost.

Although the present invention has been described with reference to one embodiment shown in the drawings, this is merely exemplary, and those skilled in the art will understand that various modifications and equivalent other embodiments are possible therefrom. Therefore, the true technical protection scope of the present invention should be defined only by the appended claims.

Claims (4)

An absorbent pad forming step of processing to an appropriate thickness using a cotton wool wound on a roll, applying a moisture absorbent thereto to form a pad, and cutting the pad to an appropriate length; A sealing step of placing a liquid permeable sheet on the absorbent pad and sealing the lower sheet on which the liquid impermeable film sheet is adhered to the lower part of the absorbent pad; Forming a leakage preventing band on the upper surface of the liquid permeable sheet after sealing is completed; In the manufacturing method of the disposable diaper comprising a post-treatment step of cutting the leg portion and the length portion to form a diaper after completion of the formation of the leak-proof band, The lower sheet is bonded to the film sheet used in the sealing step; The nonwoven fabric supplied from the nonwoven fabric supply roll 81 is transferred to the coating roll 83, and the adhesive attached to the adhesive roll 82 partially deposited in the adhesive reservoir 91 is transferred to the coating roll 83 to supply the nonwoven fabric. The film supplied from the plurality of film supply rolls 84, which are attached to the nonwoven fabric conveyed from the roll 81 and the film corresponding to the width of the diaper, is transferred to the lamination rolls 85 and 85 'so that the adhesive The nonwoven fabric laminated with the attached nonwoven fabric and the film is transferred to the take-up roll 88 through a plurality of pressing rolls 86, 86 ', 87 and 87', and wound up. A leakage preventing band in the forming of the leakage preventing band; A method of manufacturing a disposable diaper, characterized by the use of a liquid impervious film sheet formed on its attachment surface. The method of manufacturing a disposable diaper according to claim 2, wherein only a portion of the film sheet attached to the nonwoven fabric is formed on the adhesive roll (82). The method of manufacturing a disposable diaper according to claim 2 or 3, wherein the film transferred to the paper roll (85, 85 ') is supplied only by the length of the diaper by the cutter (93). A liquid permeable sheet 10; A leakage preventing band 20 having elastic bodies 21 formed in the longitudinal direction on both sides of the upper surface of the liquid permeable sheet 10; A lower sheet 30 bonded to the liquid permeable sheet 10 to form a pocket; An absorbent pad 40 accommodated in the pocket; A liquid impermeable film sheet (50) for preventing the liquid absorbed from the absorbent pad (40) from being transmitted to the outside; In the conventional disposable diaper composed of an outer sheet 60 to form an outer surface when worn and a fastening means 70 to maintain a worn state when the diaper is worn, the liquid inside the leakage preventing band 20 Disposable diaper, characterized in that it comprises an impermeable film sheet (22).