KR100526101B1 - A disposable diaper with disposable cuff - Google Patents

Abstract

The present invention relates to a disposable absorbent product, such as a diaper having a high water absorption function excellent in leakage prevention and ventilation function, liquid permeable top sheet in direct contact with the wearer's skin when worn and a liquid impermeable back to form an outer surface when worn A disposable diaper having a seat, an absorbent body and a fastening means positioned between the top sheet and the back sheet, wherein the disposable cuff is attached to the outer surface of the liquid impermeable back sheet in the rear waist region by the user. The diapers to be thrown away in the waste cuff to be unfolded to prevent unpleasant phenomena and to dispose of disposable diapers more conveniently and hygienically. There is a growing advantage.

Description

Disposable diaper with disposable cuff {A disposable diaper with disposable cuff}

The present invention relates to a disposable absorbent product such as a diaper having a high water absorption function excellent in leakage prevention and ventilation function, and more specifically, by attaching a waste cuff having an elastic body to the outer surface of the liquid impermeable back sheet of the rear waist region The present invention relates to a disposable diaper having a waste cuff which can dispose of the disposable diaper by minimizing the volume of the disposable diaper to be discarded by rolling the disposable diaper into the waste cuff and discarding the disposable diaper.

In general, disposable absorbent products are products that absorb body fluids excreted by various physiological actions, that is, products that absorb urine, feces, menstrual secretions and vaginal secretions, and more specifically, baby diapers. , Diapers used by incontinents, women's sanitary napkins, and panty liners.

Such disposable diapers typically have a liquid permeable top sheet that is in direct contact with the wearer's skin when worn, and a liquid impermeable back sheet that forms an outer surface when worn, between the top sheet and the back sheet. It consists of Absorbent Core and fastening means, which improves the fit of the wearer's thighs, finally prevents leakage of excretion and improves the appearance image. (Leg Elastic) leg band and waist band (Waist Band) to improve the fit of the waist will be included.

Absorbent of the disposable diaper is usually made of Fluffy Pulp, Super Absorbent Polymer (SAP), Tissue, and the like, and the high speed of excrement passing through the liquid permeable top sheet (Top Sheet) And retains the absorbed excreta to prevent it from being absorbed back into the skin.

In addition, the liquid permeable top sheet is a synthetic nonwoven fabric or a film formed with a hole so that the body fluid can quickly pass through the absorber, the synthetic nonwoven fabric is usually subjected to hydrophilic treatment to hydrophobic fibers to quickly transfer the body fluid absorbed by the absorber Will be used.

The liquid impermeable backsheet is a function of preventing the body fluid absorbed by the disposable diaper from leaking under the absorbent to contaminate the wearer's clothing or the surrounding environment. The liquid film is made of a waterproof film and a nonwoven fabric. It is mainly used and the nonwoven fabric is attached to this film to improve the softness of the material. In addition, the liquid impermeable back sheet is applied only to a portion to which the absorbent of the disposable diaper is applied without attaching the waterproof film to the entire back sheet to impart breathability. Therefore, the entire back sheet including the non-absorbent portion is bonded to the nonwoven fabric so that the edge portion without the waterproof film is completely ventilated because only the nonwoven fabric exists.

In such disposable diapers, the fastening means including a frontal or a front film (landing member) is to keep the disposable diaper worn on the body, and each material is a hot melt adhesive, thermal fusion or The adhesive is fixed by another bonding method.

The technical level of disposable absorbent products, including disposable baby diapers, incontinence diapers, and women's sanitary napkins, has rapidly developed in view of the speed and absorption of absorbed body fluids by physiological action. Thus, the basic performance such as the absorption speed and absorption power of the body fluid can be adjusted so that there is no inconvenience for the user.

Accordingly, the development of disposable diapers has been progressing toward improving the wearing comfort in meeting basic performances. As one method for this, ultra-thin disposable diapers that have made the absorber thinner have recently appeared. An easy way to make ultra-thin disposable diapers is to use less amount of fluffy pulp that takes up a lot of volume, and to use a lot of super absorbent polymer (SAP). In addition, a lot of elasticity is applied to the fastening means and the waist or thigh part to give an excellent fit when worn, and the fastening means are also developed for convenience in use.

This disposable diaper is also required for convenience when discarding, currently when the user wants to dispose of the disposable diaper used by the user will be attached to the liquid impermeable back sheet to the rear end fastening means rolled around the disposable diaper. In this case, the rear fastening means is often detached from the liquid impermeable back sheet, and thus there is a problem that the secretion absorbed in the disposable diaper flows out and flows around.

The present invention has been invented to solve the problems occurring during the disposal of the disposable diaper after use, by using a disposable diaper by attaching a waste cuff having an elastic body for disposal treatment on the liquid impermeable back sheet of the disposable diaper The purpose of the present invention is to provide a disposable diaper having high disposal efficiency since the volume of the disposable disposable diaper can be minimized while being easily hygienically disposed.

Disposable diaper having a waste cuff of the present invention for achieving the above object is a liquid-permeable top sheet in direct contact with the wearer's skin when worn and a liquid impermeable back sheet forming an outer surface when worn, between the top sheet and the back sheet. A disposable diaper having an absorbent body and a fastening means positioned therein, wherein the disposable cuff is attached to the outer surface of the liquid impervious back sheet of the rear waist region so that the disposable diaper to be discarded after use can be rolled into the waste cuff. It is done.

Hereinafter, with reference to the accompanying drawings will be described in detail a disposable diaper having a waste cuff of the present invention.

1 is an expanded state plan view of a disposable diaper with a waste cuff of the present invention.

In FIG. 1, the disposable diaper is divided into a front waist region 30 having a front end fastening means 12, a crotch region 31, and a rear waist region 32 having rear end fastening means 15 installed therein. It is in the form of an old hourglass. The outer shape of the disposable diaper does not necessarily have a symmetrical structure in left and right and front and rear, but preferably has a left and right symmetrical structure.

In addition, since the waste cuff 20 is attached to the outer surface of the nonwoven fabric 3 of the liquid impervious back sheet 4, in this plan view, the absorbent body 8 is shown above and the bottom surface of the disposable diaper, that is, the nonwoven fabric of the back sheet 4 (3) The waste cuff 20 is attached to the outer surface.

FIG. 2 is a partial cross-sectional view taken along the line I-I in the crotch region 31 of FIG. 1.

In FIG. 2, an absorbent body 8 is inserted between the liquid permeable top sheet 1 and the liquid impermeable backsheet 4 to be fixed using a hot melt adhesive, and the absorbent body 8 is made of downy pulp 5. And the superabsorbent polymer 6 and the tissue 7 for wrapping them, the performance of the absorbent body 8 is controlled by the absorbent content of the downy pulp 5 and the superabsorbent polymer 6.

Figure 3 is a headquarters view before wearing the disposable diaper having a waste cuff of the present invention in the back portion.

In FIG. 3, it can be seen that the waste cuff 20 is attached to the back side of the disposable diaper, that is, the outer surface of the nonwoven fabric 3 of the liquid impervious back sheet 4 of the rear waist region 32.

Fig. 4 is an unfolded rear view of the disposable diaper having the waste cuff of the present invention, and the absorbent body 8 is not visible because it is seen from the bottom of the disposable diaper.

In the disposable diaper of the present invention, the liquid impervious back sheet 4 is generally composed of a waterproof film 2 and a nonwoven fabric 3, and an absorbent body is disposed between the liquid impermeable back sheet 4 and the liquid permeable top sheet 1. (8) a pocket for inserting and fixing with a hot melt adhesive, and forming a coagulation band 9 on the left and right sides of the absorber 8 outside by absorbing means to primarily trap body fluids that are separated from the absorber 8 ( Pockets.

However, the body fluid leaving the absorbent body 8 and the coagulation band 9 still has a possibility of leaking, and in order to prevent this, a secondary pocket by the leg band 11 is formed so that the disposable diaper is a baby body type. Closer contact to prevent the possibility of leakage.

Such a disposable diaper has a fastening means and a waistband that keep the diaper worn after being worn on the baby's body in a certain shape on the baby's body, and the landing member (front) of the disposable diaper, that is, the shear waist region 30. And a front end fastening means 12 called a Landing Member, and a rear end fastening means 15 that can be engaged with the front end fastening means 12 in the rear waist region 32 of the disposable diaper. Make sure that it is secured in place. The rear fastening means 15 may support themselves but generally support the tape tab 13 to perform its function.

As the material used for the tape tab 13 should have a holding force of the tab itself over a predetermined value, it is used in the form of a film made of polymer or made of a nonwoven fabric made of polymer fiber. Material Laminated with polypropylene or polyethylene on the surface of the material may be used. In some cases, only nonwoven fabric made of polymer is used. In the case of the polymer film alone, the user is less likely to feel soft, but the manufacturing process can be simplified and raw material cost can be reduced.

The rear fastening means 15 may be of two types, one of which is a pressure-sensitive adhesive coating, which may be a pressure-coated coating of a high temperature melt on a polymer film, and a pressure-sensitive adhesive of a solvent type is coated. It may be. The other may be configured as a mechanical closure system, that is, a hook that is a mechanical fastening means.

Therefore, if the rear fastening means 15 is made of adhesive coating, the front fastening means 12 should be a vinyl film type made of a polymer such as polypropylene, and the rear fastening means 15 is a hook. In this case, the shear fastening means 12 may be manufactured by a knitted method of polymer fiber, a polymer extrusion method, or a non-woven fabric, and the shear fastening means 12 ) Is called loop type shear fastening means.

The waste cuff 20 is configured to be attached to the outer surface of the nonwoven fabric 3 of the liquid impermeable back sheet 4 in the rear waist region 32 of the disposable diaper, and the waste cuff 20 is a known disposable cuff. The attachment band is configured in the same manner as the coagulation band 9 and the leg band 11 constituting the diaper. That is, the curing band (9) is a structure that wraps the elastic body with a non-woven material made of a polymer or other material to achieve elasticity, and the elastic body is generally made of spandex or natural rubber made of polyurethane (Polyurethane). Rubber) is used. In this way, the waste cuff 20 is also manufactured while giving elasticity using the elastic body 22 to form a bag for disposal and then wrap it roundly so that the non-woven fabric 3 of the liquid impermeable back sheet 4 of the disposable diaper. It is attached to the outer surface. That is, the bag is attached to the outer surface of the nonwoven fabric 3 separately.

A general method of disposing the disposable diaper by the user is to start rolling the used disposable diaper at the front waist region 30, and then attach the rear fastening means 15 at the rear waist region 32 to the liquid impermeable back sheet 4. They are attached or disposed on each other's tape tabs 13 and discarded.

However, when the rear fastening means 15 is an adhesive means, if the adhesive loses its function due to repeated use, it does not adhere to the liquid impermeable back sheet 4, causing inconvenience to the user. In addition, when the rear end fastening means 15 is composed of a mechanical fastening means and is configured to be attached in the form of a hook, a fiber component of the rear fastening means 15 is formed between the pillars of the hook. When attached to the liquid impermeable back sheet 4 when rolled up and discarded, the phenomenon occurs that the disposable diaper is unfolded because it is not adhered to the outer surface of the nonwoven fabric 2 of the liquid impermeable back sheet 4.

Accordingly, the contents of the disposable diapers already used may be exposed outwards, in which case the user is uncomfortable and uncomfortable. In order to reduce such inconvenience, the present invention separately attaches and configures the waste cuff 20 having a bag shape to the outer surface of the nonwoven fabric 4 of the back sheet 4 so that the user can use it when disposing of the diaper.

This waste cuff 20 is composed of a nonwoven fabric 21 and an elastic body 22, and the liquid impervious back sheet 4 within 0 to 50 mm from the distal edge 17 of the rear waist region 32 of the disposable diaper. It is attached to the outer surface of the nonwoven fabric 3. And the width of the waste cuff 20 itself is determined according to the size of the disposable diaper. In other words, since the size of each disposable diaper according to the newborn, small, medium, large, oversized products is different in size, the width of the waste cuff 20 can be changed, in general, considering the diaper having a variety of sizes depending on the type It can be said that the width of 100 mm to 300 mm is appropriate, and is located in the rear waist region 32 of the disposable diaper.

In addition, the length of the waste cuff 20 (direction parallel to the longitudinal center line of the known disposable diaper) should be determined within a range such that the used disposable diaper does not sufficiently enter the waste cuff 20 and unfold again upon disposal. And, as the size of the diaper varies depending on the type, the waste cuff 20 of the present invention has a length of 80mm ~ 200mm.

Assuming that the width of the waste cuff 20 is 200 mm, the width of the nonwoven fabric 21 is 200 mm, and the elastic body 22 is 200 mm in length in the tensioned state, which is equal to the width of the nonwoven fabric 21. As the elastic body 22, a length of 20% to 150% longer in tension than the original length is used, which is said to have an elastic modulus of 20% to 150%.

The elastic body 22 is formed by bonding a high-temperature melt adhesive or the like on a non-woven fabric 21 having a predetermined basis weight or more by using a polyurethane spandex or a natural rubber in the form of a yarn. 22) is stretched at an elastic modulus of 20% to 150% to bond to the nonwoven fabric 21 in a state in which it is stretched 20% to 150% longer than the length at the time of non-tension, thereby showing the function of the elastic waste cuff 20 having elasticity. The elastic body 22 is positioned at the end of the waste cuff 20 toward the center of the diaper in the form of an elastic thread.

5 is a view showing the configuration of the waste cuff 20 according to the present invention, the waste cuff includes an elastic body 22 and made of a nonwoven fabric 21 as a whole to enable more efficient use of the 20.

5 shows the position of the elastic body 22 on the nonwoven fabric 21. The elastic body 22 is stretched at an elastic modulus of 20% to 150%, and the nonwoven fabric 21 is used in the state in which the elastic body 22 is tensioned using an elastic thread having a length of 20% to 150% longer in tension than a length in tension. After the non-woven fabric 21 is 10% to 100% longer than the actual applied length (generally parallel to the longitudinal centerline of the disposable diaper), the hot melt adhesive and the elastic body 22 are applied. By being in a folded state, the length of the nonwoven fabric 21 after folding is equal to the length of the waste cuff 20. In this case, the length of the folding can be freely adjusted by the manufacturer by making the length of the nonwoven fabric 21 longer than the length of the waste cuff 20 within the range of 10% to 100%.

Therefore, when the elastic body 22 is more securely bonded to the nonwoven fabric 21 and restored while giving elasticity, the shape of the elastic body 22 is maintained. Therefore, when the user rolls up the used disposable diaper and puts it in the waste cuff 20, it is roundly wrapped in a bag shape. This waste cuff 20 is not attached to the nonwoven fabric 3 of the back sheet 4 only the portion of the four sides (Four-sides) toward the center of the disposable diaper, and the remaining portion is a hot melt adhesive during the manufacturing process of the diaper. It adheres to the outer surface of the nonwoven fabric 3. Here, the adhesion of the waste cuff 20 to the outer surface of the nonwoven fabric 3 is secured without the phenomenon that the width of the adhesive surface is adhered to 10 mmm or more without the phenomenon of being detached again in use.

Figure 6 is a simplified view showing the disposal of the disposable diaper used by using the waste cuff 20 according to the present invention, the waste cuff 20 is one side is open and used to turn over this open part The diaper will be pushed in.

As shown in FIG. 6, the waste cuff 20 attached to the outer surface of the nonwoven fabric 3 of the liquid impervious back sheet 4 of the rear waist region 32 is the front waist region 30 after the user uses a disposable diaper. Rolling up the diaper diaper from the waste cuff 20 is turned upside down and discarded. At this time, since the elastic cuff 20 is reinforced with the elastic cuff 22, the disposable disposable diapers are not unfolded again, so that the user is not uncomfortable and uncomfortable, and thus the convenience of using the disposable diapers is further improved.

FIG. 7 is a view schematically illustrating a manufacturing process of manufacturing the waste cuff 20 and attaching the disposable cuff to the disposable diaper. The elastic cuff 22 is attached to the nonwoven fabric 21 to manufacture the waste cuff 20. Except for one side of the four sides of 20), the three sides are bonded to the outer surface of the nonwoven fabric 3 of the back sheet 4, and in use, the disposable diapers which are not adhered and turned upside down are discarded. ) And discard it.

Hereinafter, the present invention will be described in detail with Examples and Comparative Examples.

Example 1

A disposable diaper having a waste cuff 20 was prepared as follows.

In a conventional disposable diaper comprising a liquid permeable topsheet 1 and a liquid impermeable backsheet 4, an absorbent body 8, fastening means and an elastic body portion for giving a fit, the liquid impermeability of the rear waist region 32 The waste cuff 20 is attached to the outer surface of the nonwoven fabric 3 of the back sheet 4, but the waste cuff 20 is a hot melt adhesive on the nonwoven fabric 21 of the elastic body 22 made of polyurethane spandex. The elastic body 22 was used in the form of two rows of elastic yarns.

The two rows of elastic bodies 22 were arranged at equal intervals so as to be positioned at the distal end of the nonwoven fabric 21 in the direction of the diaper center, and manufactured by folding the nonwoven fabric 21 at the distal portion.

The waste cuff 20 is applied to the rear waist region 32 distal edge 17 in a direction perpendicular to the longitudinal center line of the disposable diaper, and the length of the nonwoven fabric 21 in the waste cuff 20 (usually at the longitudinal center line). Parallel) is 150 mm, and the total length is 130 mm by folding 20 mm of the end of the nonwoven fabric 21 toward the double-use diaper center direction.

At this time, the width (normally perpendicular to the longitudinal center line) of the nonwoven fabric 21 is set to 220 mm, and the elastic body 22 bonded to the hot melt adhesive on the nonwoven fabric 21 is 150% longer in tension than the non-tensioned length. The length of the tensioned state as losing was made equal to the width of 220 mm of the nonwoven fabric 21.

In this way, the waste cuff 20 manufactured by manufacturing the waste cuff 20 having a length of 130 mm and a width of 220 mm is placed on the outer surface of the nonwoven fabric 3 of the liquid impermeable back sheet 4 of the disposable diaper, that is, in the direction of the central portion of the diaper. Without bonding only the direction in which the elastic body 22 was applied, three surfaces of the remaining waste cuffs 20 were bonded with a hot melt adhesive.

In addition, the fastening means applies the rear end fastening means 15 to the rear waist region 32 and the front end fastening means 12 to the front waist region 30 to be attached, and the tape of the rear end fastening means 15. The tab 13 was adhesively coated with a hot melt adhesive of a material in which a nonwoven fabric and a polypropylene film were laminated. At this time, the handle tab 14 is formed on the tape tab 13, and the tape tab 13 is purchased from a general tape manufacturing company, but it is assumed that there is stability for shape maintenance.

And the shear fastening means 12 is attached to the shear waist region 30, the shear fastening means 12 is made of a polypropylene (Polypropylene), in general, the use of the OPP (Oriented Polypropylene) material In addition, there was compatibility with the rear fastening means 15, and easy adhesion and detachment were used.

Example 2

Except for the fastening means, the rest was produced in the same manner as in Example 1 disposable diaper having a waste cuff (20).

The fastening means applies the rear fastening means 15 to the rear waist region 32 and the front fastening means 12 to the front waist region 30 so that the fastening means is attached, and the tape tab 13 is attached to the nonwoven fabric and the poly. The propylene film was laminated so that the rear fastening means 15 became a hook, which is a mechanical fastening means.

At this time, the handle tab 14 is formed on the tape tab 13, and the tape tab 13 is purchased from a general tape manufacturing company, but it is assumed that there is stability for shape maintenance.

And the shear fastening means 12 is attached to the shear waist region 30, the shear fastening means 12 is a polypropylene (Polypropylene) or polyester (Polyester), such as woven (Woven) or knit (Knit) form As it is, the rear end fastening means (15) and the mechanical coupling to be made. In this case, the front fastening means 12 has compatibility with the rear fastening means 15, and a detachable fastening means 12 is used.

[Comparative Example]

It is a conventional disposable diaper including a liquid permeable top sheet 1, a liquid impermeable back sheet 4, an absorbent body 8, fastening means, and an elastic body portion for giving a feeling of wearing, and the fastening means is provided at the rear waist region 32. A conventional diaper having a rear end fastening means 15 having a tape tab 13 made of polypropylene and a front end fastening means 12 provided in the front waist region 30 was used as a comparative example.

The actual use satisfaction of the disposable diaper with the present invention waste cuff manufactured by Examples 1 and 2 was investigated in comparison with the conventional diaper of the comparative example, and the results are shown in Table 1 below. The survey was conducted on 100 consumers, and the consumers used the disposable diapers after use as evaluation criteria.

             <Consumer Use Assessment Results> division Usage Satisfaction (%) Judgment + ± - Comparative example 77 17 6 usually Example 1 92 6 2 Very good Example 2 91 7 2 Very good

Note 1) +: As disposable diapers are used, they are very convenient for disposal.

            ±: Disposable diapers are good for disposal.

            -: Disposable diapers are not convenient for disposal.

Note 2) Excellent: When + is over 90%

             Right: If + is over 80%

             Normal: + is over 70%

As can be seen from Table 1 above, as a result of conducting a survey of actual use of consumers, the disposable diaper products having the present invention waste cuffs of Examples 1 and 2 are more convenient for disposal than the comparative examples of conventional known disposable diapers. Satisfaction was very good.

Although a case where the waste cuff is adopted to a disposable baby diaper has been described as an example, the present invention is not limited thereto, and the present invention can be employed as it is without departing from the gist of the invention without departing from the gist of the incontinence diaper, women's sanitary napkin, panty liner, and the like. to be.

Disposable diaper having the present invention waste cuff that acts as described above is not only to prevent the user from being uncomfortable, but also to prevent the user from discomfort by re-disposing the used disposable diaper in the waste cupper discarded Disposable diapers can be disposed of hygienically and conveniently, and the waste efficiency is greatly increased by minimizing the size of waste.

1 is an expanded state plan view of a disposable diaper having a waste cuff of the present invention,

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

Figure 3 is a perspective view of the disposable diaper having a waste cuff of the present invention before wearing in the back portion,

4 is an unfolded rear view of a disposable diaper having a waste cuff of the present invention;

5 is a view showing the configuration of the waste cuff according to the present invention,

Figure 6 is a state of use at the time of disposal of the disposable diaper with the present waste cuff,

7 is a view briefly showing a manufacturing process of the waste cuff according to the present invention.

<Explanation of symbols for main parts of drawing>

1: Liquid Permeable Top Sheet

2: waterproof film

3: nonwoven fabric

4: Liquid impermeable back sheet

5: Fluffy Pulp

6: Super Absorbent Polymer (SAP)

7: Tissue

8: Absorbent Core

9: Barrier Cuff

10: Coagulation band elastic body (Barrier Cuff Elastic)

11: leg band

12: shearing means (Landing member)

13: Tape Tab or Hook Carrier

14: handle tab (Finger Tab) 15: rear fastening means

16: longitudinal edge 17: distal edge

20: Disposable Cuff 21: Nonwoven Fabric

22: elastic body 30: shear waist region

31: crotch area 32: rear waist area

Claims (7)

A liquid permeable topsheet 1 in direct contact with the wearer's skin when worn; A liquid impermeable back sheet 4 which forms an outer surface when worn; An absorbent body (8) positioned between the top sheet (1) and the back sheet (4); Shear fastening means 12 located in the shear waist region 30; A rear end fastening means 15 for the rear waist region 32; In the disposable diaper with a; waste cuff 20 for disposal after use, The waste cuff 20 is attached to the outer surface of the liquid impermeable back sheet 4 of the rear waist region 32, the waste cuff 20 is composed of a nonwoven fabric 21 and an elastic body 22, after use Rolling up the disposable base to be discarded, and then turning the waste cuff 20 over to form a bag, and discarding the disposable diaper to be discarded by discarding the disposable cuff in the bag. delete The disposable diaper according to claim 1, wherein the waste cuff has a length of 80 to 200 mm and a width of 100 to 300 mm. 4. Disposable diaper according to claim 1 or 3, characterized in that the waste cuff is attached within 0-50 mm from the distal edge 17 of the rear waist region (32). According to claim 1, wherein the length of the non-woven fabric 21 is 10% to 100% longer than the length of the waste cuff 20 and then folded to the front end (folding) length of the nonwoven fabric 21 is folded waste cuff ( Disposable diaper with a waste cuff, characterized in that the length of 20). The disposable diaper according to claim 1, wherein said elastic body (22) is a spandex or natural rubber made of polyurethane. 7. The disposable diaper according to claim 1 or 6, wherein the elastic body has an elastic modulus that is 20% to 150% longer than the original length when it is stretched.