KR20000047324A - Disposable absorbent article - Google Patents

Abstract

PURPOSE: A disposable absorbent article is provided which forms a leg band as a leak preventing means at an adhesive point between an absorbent core and a barrier cuff, so it has a good leak preventing effect. CONSTITUTION: In disposable absorbent article having a liquid permeable top-sheet, a liquid impermeable back-sheet, an absorbent core composed of fluff pulp, super absorbent polymer and tissue, a concluding means and a leak preventing means, a disposable absorbent article has the leak preventing means, which is comprised of a leg elastics and the barrier cuff at the both outsides of the absorbent core, and the leg elastics, which is comprised of an adhesive part of barrier cuff and the end of its adhesive part.

Description

Disposable absorbent products

The present invention relates to a disposable absorbent article that has improved leakage preventing function by increasing the leakage preventing pocket, and more particularly, a liquid permeable upper sheet in contact with the skin when worn, and a liquid impermeable back sheet forming an outer surface when worn. The present invention relates to a disposable absorbent article having excellent leakage preventing effect by forming a leg band between the absorber and the coagulation band adhesion point as a leak-proofing means in a conventional disposable absorbent article composed of an absorber and the like positioned between the sheet and the back sheet.

A general disposable absorbent product is a product that absorbs body fluids excreted by various physiological actions, that is, a product that absorbs urine, feces, menstrual secretions and vaginal secretions, and in particular, disposable diapers used by infants or incontinence (Diaper), women's sanitary napkins and panty liners.

Disposable diapers of disposable absorbent products include liquid permeable top sheet that directly contacts the wearer's skin when wearing disposable absorbent products, liquid impermeable back sheet that forms an outer surface when worn, and liquid permeability. Absorbent core located between the upper sheet and the liquid impermeable backsheet, and leakage preventing means formed on the outside of the absorber.

Among these disposable diaper components, the liquid predominant upper sheet is composed of a synthetic nonwoven fabric so that body fluids can quickly pass through the absorbent body, which is typically used to prevent body fluids absorbed by the absorbent from contacting the wearer's skin again. It is used after hydrophilic treatment on hydrophobic fibers. In addition, the absorber is generally composed of fluff pulp, super absorbent polymer, tissue, etc., and absorbs the body fluid passing through the liquid permeable top sheet at a high speed. It functions to receive and retain body fluids to prevent them from contacting the skin again. The liquid impervious backsheet serves to prevent the wearer's clothing from being contaminated by the body fluids absorbed in the disposable absorbent product. The liquid impervious backsheet mainly uses polyethylene film, and is also used by attaching a nonwoven fabric to the polyethylene film. Leak prevention means are used to form a solid band and leg elastics on the outside of the absorber to prevent body waste from leaking out of the product and contaminating. The coagulation band is used as a flexible hydrophobic sidesheet in a separate material from the liquid permeable topsheet and forms a pocket for receiving feces.

The fastening means uses a hook and a loop, which is a re-adhesive tape or a mechanical adhesive system, so that the absorbent article can be worn and maintained on the body.

Looking at the current state of the art in disposable absorbent products, including disposable diapers and women's sanitary napkins, the primary basic performance of absorbing and storing body fluids sprayed by physiological actions has reached a significant level of technology. There is no inconvenience.

However, in order to make the absorbent thinner in order to improve the wearing comfort of disposable diaper products, the amount of fluffy pulp that takes up a lot of volume is used and the superabsorbent resin is used a lot. If the ratio of the mixture of pulp and superabsorbent polymer is not proper, the absorbent may become narrow or clump when the disposable absorbent product is worn for a long time or when the baby's activity or movement is severe, resulting in poor usability of the absorbent. do.

In addition, the function of the fastening means is insufficient, the disposable diaper is not maintained in the wearer's body, the drooping phenomenon occurs when the baby urinating in this state is more likely to cause the glands, the gland occurs a lot of inconvenience to the user It is causing the situation.

Accordingly, in the present invention, to solve this problem, to increase the pocket by the leakage preventing means to provide a product with enhanced function to prevent the body fluid flowing out of the absorber.

The method for enhancing the leakage preventing function of the present invention is described in detail as being the position of the elongated band and the leg elastic body used as the leakage preventing means.

Liquid-permeable topsheet that contacts the skin when worn, Liquid impermeable backsheet that forms the outer surface when worn, Absorber located between the topsheet and the backsheet, Liquid impermeable backsheet that forms a leak-proof coagulation band and forms outside the absorber And a hydrophobic side sheet to form a soluble flap, and the hydrophobic side sheet includes an elastic portion disposed by attaching an elastic body to one end to form a coagulation band, and the flexible hydrophobic side sheet including the elastic portion includes the entire length of the disposable absorbent article. Bonded to the starting point where the flexible flap forms a height, and the flexible hydrophobic side sheet is bonded to both ends of the waist of the disposable absorbent product to form a pocket for confining the body waste. . The leg elastics, which are used as other leakage preventing means, are formed by partially attaching the elastic bodies to the longitudinal crotch portions of the products between the outer side of the absorber and the adhesive portions of the coagulation bands bonded over the entire length of the products.

1 is a plan view of the present invention

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

<Explanation of symbols for main parts of drawing>

D: Disposable Absorbent A: Vertical Axis

1: front waist 18: ear

2: crotch portion 19: leak-proof pocket

3: rear waist 20: flap

4: liquid impermeable back sheet 21: solid-state elastic portion

5: hydrophobic side sheet 22: curd band flap

6: absorber

7: liquid permeable top sheet

8: poop band

9: curd band elastomer

10: leg elastic body

11: waistband

12: Front fastening means

13: rear fastening means

14: absorber packing means

15: cured band adhesive part

16: coagulation band end adhesive

Hereinafter, the present invention will be described in detail with reference to the drawings.

FIG. 1 is a plan view of the present invention, and the disposable diaper D is represented, and FIG. 2 is a side cross-sectional view taken along line A-A of FIG.

Disposable diaper (D) is the appearance of an hourglass type for convenience, it can be formed in a straight shape. The appearance of the hourglass type is represented by the waist part (1,3) and the part (2), the waist part is located in front of the wearer when the product is worn, and the part with the front fastening means (12) Although referred to as a waist (1), the front fastening means 12 is a liquid impermeable back sheet (4) of the disposable diaper (D) in the waist (1) of the liquid impermeable back sheet (4) of the disposable diaper (D) The waist portion 1 of the cold disposable diaper (D) is bonded in the transverse direction so as to be symmetrical about the longitudinal axis (A). The front fastening means 12 is mainly a rolled propylene film or a loop (LOOP) is used.

Located at the rear of the wearer, the part with the rear fastening means 13 is called the rear waist portion 13, and the rear fastening means 13 is formed by being bonded to both ends of the rear waist portion, and is mainly a re-adhesive tape or hook (HOOK) is used.

The crotch portion 2 is a portion excluding the front and back waist portions 1 and 3, and is mainly located in the crotch portion 2 of the wearer.

The liquid permeable topsheet 7 mainly uses a hydrophilic nonwoven fabric as a contact portion of the wearer's hip and groin. It is in close contact with the baby's skin and prevents the body fluids which are not completely absorbed from the absorbent body 6 from rising to the liquid permeable top sheet 7 and has a diffusion function to deliver to the absorbent body so as to quickly penetrate during urination. In addition, in order to prevent skin rashes of diapers, the skin protection treatment or soft material is used to provide skin protection. The basis weight of the liquid permeable top sheet 7 is 18 to 26 gsm (g / m 2).

Absorber 6 has a rectangular shape, an hourglass shape, or a T-shaped shape by uniformly mixing the fluffy pulp and superabsorbent resin, and is formed in a constant size and thickness, the absorber packaging means (14) Packed with tissue or non-woven fabric so that there is no inconvenience in the absorbent body 6 during use. Leak-proof pocket 15, which is the starting point to form the starting point of the present invention, and the flexible hydrophobic side sheet 5 is bonded to both ends of the waist portion (1,3) of the disposable absorbent product to trap body waste ( It consists of a corresponding band end adhesive portion 16 is bonded to form a 19). The leg elastic body 10 used as another leakage preventing means mainly includes the longitudinal crotch portion 2 of the product between the outside of the absorber 16 and the adhesive portion 16 of the coagulation band bonded over the entire length of the product. It is formed by adhering an elastic body partially.

The hydrophobic side sheet 5 is mainly composed of a polypropylene-based synthetic fiber nonwoven fabric. Spun bonded nonwoven fabric, spun spun bonded nonwoven fabric, and spun melt blown fabric are mainly used as a synthetic fiber nonwoven fabric. Spun-MeltBlown-SpunBonded Nomwoven is used and basis weight is 14 ~ 26gsm (g / m²).

The side flap 20 is a side portion of the liquid-impermeable backsheet 4 other than the absorbent body 6, and is composed of a portion to which the liquid-permeable top sheet 7 and the hydrophobic side sheet 5 are bonded.

The soluble hydrophobic side sheet 5 is a material forming the solidification band 8, and the solidification band 8 is the solidification band flap 22, the solidification band elastic portion 21, the solidification band 15, and the solidification band end adhesive portion. It consists of (16).

The coagulation band elastic portion 21 is adjusted according to the size of the disposable diaper (D) and adheres the stretched elastic body using a hot melt adhesive to a length of about 200 to 530 mm so that the elastic body is fixed to the hydrophobic side sheet 5. It is formed by fixing. The hot melt adhesive has an adhesive property in a molten state at about 120 to 170 ° C. The elastic body is mainly used for the elastic yarn and the thickness of the elastic yarn is 560 ~ 1120 denier is used to maintain the 120 to 200% elongation, preferably stretched to 130 ~ 180% so that the elastic body marks on the baby's skin.

The coagulation band adhesive part 16 becomes a part which forms the coagulation band 8, and becomes the starting point which forms the height of the coagulation band 8. The adhesive portion 16 of the coagulation band is bonded at a width of 1 to 2 mm in the entire length direction of the disposable diaper D as a boundary portion of the side flap 20 to which the liquid impermeable back sheet 4 is bonded.

The width | variety of the adhesion part 16 between both sides of the coagulation band 8 becomes 170-190 mm, Preferably it becomes 180-190 mm. The width of the crotch portion 2 of the disposable diaper D is mainly 210 to 240 mm. In order to improve the appearance of the disposable diaper D, the side flap 20 outside the coagulation band adhesive part 16 is provided. It is preferable that the width of one part becomes 15-25 mm.

The corresponding band flap 22 becomes the height of the corresponding band 8 from the adhesive part 16 of the corresponding band to the end of the corresponding band elastic part 21. The height of the coagulation band 8 is 25-25 mm, Preferably it is 25-35 mm.

The end adhesive portion 16 of the coagulation band 8 is bonded to both ends of the longitudinal direction of the coagulation band 8 to the waist portions 1 and 3 of the front and back sides, and the coagulation band flap 22 is the coagulation band elastic portion 21. It stands up by the elastic force of) and acts as one of the means for preventing the leakage of excrement which is not completely absorbed by the absorber 6 by forming the leakage preventing pocket 19.

In the drawings, a rectangular shape is shown for convenience.

Absorber 6 absorbs urine quickly, maintains storage and usability, which is dependent on the size of the absorbent, the basic performance of pulp and superabsorbent resin, content, mixed state and hardness of the absorbent. It depends. Fluffy pulp speeds up the absorption of urine when the baby is urinating, and functions to diffuse the absorbed urine, mainly 10 to 18g, preferably 10 to 15g, the main weight of the weight loss to thin the absorber (6) It becomes a target. The super absorbent polymer mainly functions to absorb and store absorbed urine, and is generally used in the range of 1 to 13 g, preferably 7 to 10 g.

In order to maintain the compatibility of the absorbent body 6, the absorber packing means 14 is mainly packaged with tissue or nonwoven fabric, and the pressure is applied to maintain a constant thickness of about 1.5 to 3.5 mm, and the strength is applied by adding a specific substance. It is also possible to have. A sheet form in which a thin pulp and superabsorbent resin are thinly bonded may be used, and a preferable sheet form may be in a state in which pulp and superabsorbent resin are adhered and fixed on a tissue or a nonwoven fabric.

The liquid impervious backsheet 4 does not leak the urine absorbed by the absorber 6 underneath the absorber, and mainly uses a polyethylene film, which is a breathable film that imparts breathability and a non-woven fabric and film for imparting a sense of quality to the outside. May be thermally fused or adhesively bonded. In addition, in order to impart environmental friendliness in the future, the use of a decomposable film is expected. As for the basis weight of the liquid impermeable back sheet 4, 34-44 gsm (g / m <2>) is used.

In order to make the disposable diaper D wearable to the wearer, the size of the product, the shape of the product, the elastic body are formed, and the position of the fastening means is changed.

As the elastic body, elasticity is strengthened at the waist band 11, leg elastic body 10, the back waist portion 3 or the ear portion 18 of the diaper, and alternatively, the back waist portion 3 is provided with the elastic function. In order to impart an elastic function to the rear fastening means (13). Polyurethan foam (Polyurethan Foam), Polyurethane film (Polyurethan Film) is mainly used as the waistband (11), the basis weight is 36 ~ 60gsm (g / ㎡), the leg elastic body 10 is natural rubber, spandex (Spandex) It is used from 560 denier to 1120 denier in thread form. Moreover, the width | variety of 1-2 mm is used as a band form.

In the present invention, to increase the leakage preventing pocket (19) to form a solid band (8) and leg elastic body (10) as a leakage preventing means to provide a product with enhanced function to prevent body fluids flowing out of the absorber (6) will be.

The method for enhancing the leakage preventing function of the present invention is to change the position of the elongated band (8) and the leg elastic body (10) which is used as the leakage preventing means by the liquid permeable upper sheet (7) in contact with the skin when worn; A liquid impervious back sheet 4 which forms an outer surface when worn, an absorbent body 6 positioned between the top sheet 7 and the back sheet 4, and a solidifying band 8 are formed by leakage preventing means. 6) Hydrophobic sidesheet 5, which is bonded to the liquid impermeable backsheet 4 from the outside to form a flexible side flap 20, the hydrophobic sidesheet 5 has one end portion to form a solid band 8; The elastic body is attached to the elastic band 21 and the excreted band elastic portion 21, and the flexible hydrophobic side sheet 5 including the elastic portion 21 is bonded in the entire longitudinal direction of the disposable absorbent article to increase the height of the flexible flap The terminal adhesive portion 16 of the coagulation band is coagulation. The length of the distal end portion 16 is fixed to the height of the curd band flap 22 when the flap 22 of the rod is fixed to the disposable diaper (D) longitudinal Yangtze end in the front and back waist portions 1 and 3. It is possible to bond the entire width, or to attach a portion corresponding to the part of the elastic band elastic portion 15 and the bonding length of the end bonding portion 16 is mainly 30 ~ 150mm from both ends of the disposable diaper, preferably 50-130 mm. In order to reinforce the leakage preventing function of the pocket, it is preferable to adhesively fix to 50-130 mm length over the whole flap 22 width of a coagulation band.

The other leakage preventing means is a leg elastic body 10 which is mainly used in the longitudinal crotch portion 2 of the product between the outside of the absorber 6 and the adhesive portion 15 of the coagulation band bonded over the entire length of the product. It is formed by bonding an elastic body partially. The width of the center part of the crotch part 2 of the absorber 6 is mainly used to 100-120 mm, or it may make it wider. Therefore, the length from the outer side of the absorber 6 to the coagulation band adhesion part 15 is 50-90 mm, Preferably it is 70-80 mm.

A leg elastic body 10 is formed on the side flap 20 between the absorbent body 6 and the adhesive portion 15 of the solidification band. The length of the leg elastic body 10 extends the elastic body to the crotch portion 2 of the disposable diaper D. Bonding and fixing between the liquid-impermeable back sheet 4 and the liquid-permeable top sheet 7 by means of a hot melt adhesive. It is preferable to form in the range of -15 mm. When the bonding position of the leg elastic body 10 is bonded to the coagulation band adhesive part 15 or the absorber 6 by about 10 mm, the external appearance of the product is not preferable, and in particular, the absorber body is biased toward the absorber 6. By (6), the elastic force of the leg elastic body 10 is reduced or the left and right elastic force is different, causing deformation of the product. Leg elastic body 10 is mainly used in the form of elastic rubber-like natural rubber, spandex or band 2 ~ 3㎜ width, using 2 to 3 elastic yarn.

Hereinafter will be described using examples and comparative examples of the present invention.

Example 1

In forming an elastic impermeable backsheet, a liquid permeable quadrilateral sheet, an absorber located between the upper sheet and the backsheet, and a leg elastic body and a solidification band as leakage preventing means outside the absorber, the absorber width is 100-120 mm, The width between the band bonding points is set to 170 mm, and the leg elastic body is formed in the middle portion from the outside of the absorber to the length of the curing band bonding part, and the elongation rate of the curing band elastic part and leg elastic body is stretched and fixed at 130% to 200%. A disposable diaper was produced.

Example 2

In Example 1, a disposable diaper was produced in the same manner as in Example 1 except that the width between the coagulation band adhesion points was 180 mm.

Example 3

In Example 1, a disposable diaper was produced in the same manner as in Example 1 except that the width between the curing band adhesion points was 190 mm.

Example 4

In Example 1, a disposable diaper was produced in the same manner as in Example 1 except that the width between the coagulation band adhesion points was set to 200 mm.

Comparative Example 1

In Example 1, the width between the coagulation band adhesion points was 210 mm, and the leg elastic body was formed in the middle portion from the outside of the absorber to the length of the coagulation band adhesion part, and the elongation rate of the coagulation band elastic part and the leg elastic part was 130-200%. The disposable diaper was produced by elongation adhesive fixation.

Comparative Example 2

In Example 3, a disposable diaper was produced in the same manner as in Example 3, except that the leg elastic body was formed to be approximately 10 mm from the absorber side to the length from the absorber outer side to the coagulation band adhesive portion.

Comparative Example 3

In Example 3, a disposable diaper was produced in the same manner as in Example 3, except that the leg elastic body was formed to be about 10 mm from the side of the coagulation band adhesion portion at the length from the outside of the absorber to the coagulation band adhesion portion.

[Comparative Example 4]

The liquid-impermeable backsheet, the liquid-permeable topsheet, the absorber positioned between the topsheet and the backsheet, and the leg elastic body and the solidification band are formed by the leakage preventing means outside the absorber, and the absorber width is 100-120 mm. The width between the band bonding points was 140-160 mm, the leg elastic body was formed outside the coagulation band adhesive part, and the elongation rate of the coagulation band elastic part and the leg elastic body was stretched and fixed to 130-200% to prepare a disposable diaper.

Disposable diapers prepared in Examples 1 to 4 and Comparative Examples 1 to 4 were evaluated for the prevention of leakage and the image of the appearance by conducting a consumer review of 100 people corresponding to the weight of the baby 6-15 kg From the baby mother, the degree of leakage during the wearing period and the appearance of the product were observed to determine the degree of difference between the products, and the results are shown in Table 1.

(Table 1) Evaluation and judgment of leakage prevention

division Symptom Judgment +++ ++ + ± - Example 1 87 13 0 0 0 Great Example 2 93 7 0 0 0 Great Example 3 100 0 0 0 0 Excellent Example 4 85 15 0 0 0 Great Comparative Example 1 70 12 5 13 2 usually Example 2 70 30 0 0 0 Great Example 3 80 20 0 0 0 Great Comparative Example 4 70 5 10 5 2 Bad

Note 1) (+++): No leakage occurs while wearing diaper

Excellent appearance image of diaper.

(++): No leakage occurs while wearing diaper

The appearance image of the product is somewhat deteriorated.

(+): Some leakage occurs while wearing diaper

The appearance image of the product is normal.

(±): There is a leakage phenomenon during diaper wearing,

The appearance image of the product is also poor.

(-): Severe phenomenon occurs when wearing diaper

Bad appearance of diaper.

Note 2) Very good: When (+++) is 100%

Excellent: When (++) or more is 90 or more but less than 100%

Normal: More than 90% and less than 100%

Poor: if greater than or equal to (+) is less than 90%

As shown in Table 1 above, the products in which the leg elastics were formed between the absorber outer side and the coagulation band adhesive part (Examples 1 to 4) were more effective in preventing leakage than the products in which the leg elastics were formed on the outer side of the coagulation band adhesion part (Comparative Example 4). It was found to be excellent, because it is possible to form the leg elastic body between the absorbent body and the coagulation band adhesive portion, thereby increasing the leakage preventing pocket area, and the coagulation band due to the leg elastic body standing up close to the skin of the baby leg part. .

However, the products in which the foot elastic body is formed in close contact with the absorbent body or the coagulation band bonding portion (Comparative Examples 2 to 3) are similar in Examples 1 to 4 to the leakage preventing function of the leakage preventing means, but appear to be inferior in the appearance image of the diaper. It was found to be superior to the Comparative Example 4 product.

In the product of Comparative Example 1, when the width of the coagulation band adhesive part is widened, a leakage phenomenon occurs, and the appearance image of the diaper was also observed to be inferior to 1 to 2 products in Examples 1 to 4 and the comparison. When used together with 1 ~ 4 products, the effect of leakage prevention is considered excellent.

Claims (3)

In a disposable absorbent product having a liquid permeable top sheet, a liquid impermeable back sheet, an absorbent composed of downy pulp, superabsorbent resin and tissue, and an absorbent body inserted between the top sheet and the back sheet, the fastening means and the leak-proof means , The leakage preventing means is composed of leg elastics and a solid band on both outer sides of the absorbent body, and the leg elastic body is composed of a solid band adhesive part and a solid band end adhesive part from the outer side of the absorbent body. The width of the adhesive band of the corresponding band is set to 170 to 190 mm, preferably the width of the band of adhesive band is set to 190 mm, and a foot elastic body is formed in the middle portion of the width between the absorber and the band of adhesive band. Disposable absorbent product, characterized in that. The disposable absorbent article of claim 1 or 2, wherein the elastic body is used in the form of an elastic chamber or elastic band, and natural rubber or synthetic elastic body is used.