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Absorbent article including airlaid mixture material containing thermoplastic fibers treated with phosphate ester or sulfate ester

A thermoplastic fiber and absorbent product technology, applied in the field of absorbent products, can solve the problems of destroying the conformability of sanitary napkins, high hardness, leakage, etc., and achieve the effects of excellent fluid handling performance, improved conformability, and leakage prevention.

Inactive Publication Date: 2005-10-05
THE PROCTER & GAMBNE CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The high hardness of the airlaid material tends to destroy the conformability of the sanitary napkin to the body, thus causing leakage

Method used

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  • Absorbent article including airlaid mixture material containing thermoplastic fibers treated with phosphate ester or sulfate ester
  • Absorbent article including airlaid mixture material containing thermoplastic fibers treated with phosphate ester or sulfate ester
  • Absorbent article including airlaid mixture material containing thermoplastic fibers treated with phosphate ester or sulfate ester

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preparation example Construction

[0096] 1. Preparation of sheep blood matrix test fluid

[0097] A number of fluids are known for simulating menstruation in laboratory tests. We have selected ingredients to simulate the highest viscosity of menses and prepared as follows.

[0098] 1) Prepare 1000 mL of a solution (Solution A) with 1.38 ± 0.005 g of monobasic sodium phosphate monohydrate and 8.50 ± 0.005 g of sodium chloride plus distilled water.

[0099] 2) Prepare 1000 mL of solution (solution B) with 1.42±0.005 g of anhydrous dibasic sodium phosphate and 8.50±0.005 g of sodium chloride plus distilled water.

[0100] 3) Add solution A to 450±10 mL of solution B while stirring slowly until the pH of the solution reaches 7.2±0.1 (solution C).

[0101] 4) Dissolve about 120 g of gastrin powder in 460±10 mL of solution C, stir with any propeller-type electric mixer, and stir for 2.5 hours at 70 ° C at a stirring speed that does not produce splashing. Gastrin powder can be purchased from, for example, the Unite...

Embodiment 1

[0129] An 82% phosphate slurry available from Rayonier Inc., Georgia, USA under the trade name Rayfloc J-LD-E was used using an airlaid system ("Airlaid System") from M&J Fibretech A / S, Horsens, Denmark. Fibers ("pulp fibers") and 18% coated with a mixture of potassium N-dodecyl (C12) phosphate and potassium N-octyl (C8) phosphate available from Chisso Corporation in Osaka, Japan under the code XESC1015. % acid-modified polyethylene (in sheath) / polypropylene (in core) bicomponent fibers (1.7 dex, 5.0 mm long) (“bicomponent fibers”) to produce one layer of TBAM. Subsequent heat treatment is performed at about 142C. The material has a basis weight of 100g / m2 and a thickness of 20gf / cm 2 (ie, 0.050 g / cc) under pressure is about 2.0 mm. The TBAM layer is preferably used as figure 1 with 2 Absorbent core 50 in the illustrated embodiment.

Embodiment 2

[0131] A layer was produced using an air-laid system and subsequent heat treatment at 153C with 65% pulp fibers, 18% bicomponent fibers and 17% particulate AGM with an absorption rate of 7.3 g / g for the mentioned test fluid TBAM. The material has a basis weight of approximately 100g / m 2 And the thickness is 20gf / cm 2 (ie, 0.050 g / cc) under pressure is about 2.0 mm. The TBAM layer is preferably used as figure 1 with 2 Absorbent core 50 in the illustrated embodiment.

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Abstract

The invention is directed to an absorbent article, comprising: a topsheet; a backsheet; an airlaid mixture material disposed between the topsheet and the backsheet. In one aspect of the invention, the airlaid mixture material includes a) cellulosic fibers, and b) thermoplastic fibers having a surface treated with a surfactant including a phosphate ester, a sulfate ester, or a derivative thereof. The cellulosic fibers and the thermoplastic fibers are bonded together to form a thermally bonded airlaid matrix which preferably has dry density of from about 0.04 to about 0.11 g / cc under pressure of 20 gf / cm<2>.

Description

technical field [0001] The present invention relates to absorbent articles. More particularly, the present invention relates to an airlaid material comprising thermoplastic fibers having a surface treated with a surfactant of phosphate ester, sulfate ester or derivatives thereof. Background technique [0002] Absorbent articles such as sanitary napkins, pantiliners and incontinence pads are devices typically worn in the crotch region of underwear. More specifically, sanitary napkins are worn by women under their underwear, usually between the wearer's legs adjacent to the perineum. Sanitary napkins are used to absorb and retain bodily fluids or discharges from the female body (eg, menstruation) and to prevent soiling of the body and clothing. [0003] Leakage protection (ie, preventing fluid from leaking from the sanitary napkin onto the undergarment) is a primary function of sanitary napkins. Leakage is believed to be caused by a combination of mechanisms: a) fluid acqui...

Claims

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Application Information

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IPC IPC(8): A61F13/53A61F13/15A61F13/49A61L15/28A61L15/48B32B5/26
CPCA61L15/28A61L15/48A61F13/15617A61F13/15658A61F13/531C08L1/00
Inventor 美浓口良布赖恩·F·格雷关申一郎彼得·D·文图拉
Owner THE PROCTER & GAMBNE CO
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