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Layered absorbent structure

A technology of hygroscopic products and hygroscopic materials, which is applied in the direction of layered products, absorbent pads, medical science, etc., can solve the problem that the absorbent core is not enough to achieve the performance target, achieve rapid acquisition and absorption of liquid, increase the absorption rate, and prevent leakage sexual effect

Inactive Publication Date: 2001-01-24
KIMBERLY-CLARK WORLDWIDE INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Absorbent cores of current absorbent articles are insufficient to meet current performance goals

Method used

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  • Layered absorbent structure
  • Layered absorbent structure
  • Layered absorbent structure

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0379] The upper layer had a basis weight of 400 gsm and consisted of 20% 53C superabsorbent, a superabsorbent commercially available from Dow Chemical, and 80% FPF2 mercerized pulp, a material commercially available from Buckeye Corp. The tau value for Dow 53C superabsorbent is 8.5 minutes; the capacity for FAULZ is 33 g / g; and the 0.3 psiMAUL value is 26.2 g / g. like figure 2 As shown, the upper layer extends over the area of ​​the 48-layer region and is densified to 0.2 g / cc.

[0380] The lower layer had a basis weight of 450 gsm and consisted of 40% SXM880 superabsorbent, a superabsorbent available from Stockhausen, and 60% CR-1654 fluff pulp available from Alliance Forest Products, a company located in Coosa Pines, Al. The τ value of SXM 880 superabsorbent is 4 minutes; the FAULZ capacity is 38g / g; the 0.3psi MAUL value is 29.8g / g. figure 2 As shown, the lower layer extends over the entire area of ​​the absorbent system (the area of ​​layer region 50) and is densified ...

example 2

[0383] The upper layer has a basis weight of 400 gsm and consists of 20% 53C superabsorbent, a superabsorbent available from Dow Chemical, 5% type 255 binder fibers and 75% HPF2 fluff pulp, a material available from Buckeye Cellulose Corp . The tau value for Dow 53C superabsorbent is 8.5 minutes; the capacity for FAULZ is 33 g / g; and the 0.3 psiMAUL value is 26.2 g / g. The material is densified to 0.2 g / cc for use in products at a density of 0.05 g / cc and under conditions that do not cause the bonding fibers to remelt and bond, the shape of the material is as figure 2 shown.

[0384] The lower layer had a basis weight of 450 gsm and consisted of 40% SXM880 superabsorbent, a superabsorbent available from Stockhausen, and 60% CR-1654 fluff pulp, available from Alliance Forest Products. SXM, a company located in Coosa Pines, Al. 880 Superabsorbent has a tau value of 4 minutes; a FAULZ capacity of 38 g / g; and a 0.3 psi MAUL value of 29.8 g / g. like figure 2 As shown, the lower...

example 3

[0387] The upper layer had a basis weight of 350 gsm and consisted of 40% 53C superabsorbent, a superabsorbent available from Dow Chemical, 60% HPF2 fluff pulp, a material available from Buckeye Cellulose Corp. The tau value for Dow 53C superabsorbent is 8.5 minutes; the capacity for FAULZ is 33 g / g; and the 0.3 psiMAUL value is 26.2 g / g. This material is used in the shape of layer 48, and its density is 0.2g / cc.

[0388] The lower layer had a basis weight of 450 gsm and consisted of 40% SXM880 superabsorbent, a superabsorbent available from Stockhausen, and 60% CR-1654 fluff pulp available from Alliance Forest Products, a company located in Coosa Pines, Al. The τ value of SXM 880 superabsorbent is 4 minutes; the FAULZ capacity is 38g / g; the 0.3psi MAUL value is 29.8g / g. figure 2 As shown, the lower layer extends over the entire area of ​​the absorbent system (the area of ​​layer region 50) and is densified to 0.2 g / cc.

[0389] The flow conductance value for this example i...

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Abstract

A distinctive absorbent article includes an absorbent core having multiple absorbent layers, wherein the absorbent layers interact in such a manner which preferentially locates absorbed liquid in an appointed, high saturation wicking layer. The localization of the liquid within this wicking layer increases the potential of this layer to move liquid through capillary action due to the higher saturation level and increased amount of liquid available. The intake capability of the absorbent system is maintained or improved over current systems by keeping a second layer of the absorbent system at low saturation levels through as many insults of the product as possible, while providing optimum intake performance through appropriate control of the composite properties. The low saturation in this layer provides void volume for the incoming insult as well as a high permeability, thus increasing the intake rate of the absorbent system as a whole, but the structure of the low saturation layer is also balanced to provide an appropriately high level of capillary tension to provide enough control of the liquid to stop leakage from occurring.

Description

field of invention [0001] The present invention relates to a layered absorbent structure. More particularly, the present invention relates to a layered composite absorbent structure having individual layers constructed and arranged to selectively cooperate to provide desired performance parameters within the composite layered structure. Background of the invention [0002] Performance goals for disposable absorbent articles, such as baby diapers, include no leakage of the article, a dry feel to the wearer, and comfort over the life of the product. Accordingly, absorbent articles typically include absorbent cores that provide liquid handling and other absorbent functions required to meet product performance objectives. The absorbent core of absorbent articles generally comprises wood pulp fibers with superabsorbent material usually distributed within the absorbent core to enhance the absorbent capacity for liquids. The absorbent core is usually made into an hourglass shape,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F13/53A61F5/44A61F13/15A61F13/49A61F13/534B32B5/00
CPCA61F13/535A61F2013/15422A61F2013/530569A61F2013/530722A61F2013/15406A61F2013/530744A61F13/15203
Inventor R·D·埃维雷特T·G·波尔维克R·N·多格二世V·M·格鲁贝李湧S·K·梅里乌斯S·兰加纳坦D·L·詹克章小民S·M·格赖斯基维茨S·B·利特勒B·J·马休斯D·J·麦多瓦尔L·H·肖耶尔K·S·E·常
Owner KIMBERLY-CLARK WORLDWIDE INC
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