Disposable absorbent article including an elasticized area
First Claim
Patent Images
1. A disposable absorbent article having a length and a width defining first and second waist portions and first and second longitudinal marginal portions, said article comprising the following components:
- a backsheet layer;
a topsheet layer; and
an absorbent structure located between said topsheet layer and said backsheet layer, said article including at least one elasticized area formed from an elastomeric, hot melt, pressure-sensitive adhesive, a first component and a second component, said first and second components being adhered to one another by said elastomeric, hot melt pressure-sensitive adhesive, said elastomeric, hot melt pressure-sensitive adhesive and the elasticized area formed therewith being elongateable in a first direction, said elasticized area having an original length in the first direction, said elasticized area being retractable after elongation to a length substantially equivalent to said original length, the elasticized area having the following properties;
a) an adhesive bond strength sufficient to adhere said first and second components together during use of said disposable absorbent article;
b) an elongation of at least 50 percent;
c) a retractive force of less than 400 grams force per inch width at 90 percent elongation;
d) a viscosity of less than 70,000 centipoise at 350°
F.; and
e) a cold flow value of less than 20 percent at 54°
C.
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Accused Products
Abstract
Disclosed is a disposable absorbent article having a length and a width. The disposable absorbent article defines a first and second waist portion and a first and second longitudinal marginal portion. The disposable article includes the components of a backsheet layer, a topsheet layer, and an absorbent structure located between the topsheet layer and the backsheet layer. The article includes at least one elasticized area formed from an elastomeric, hot melt, pressure-sensitive adhesive, a first component and a second component, said first and second components being adhered to one another by said elastomeric, hot melt, pressure-sensitive adhesive. The elastomeric, hot melt, pressure-sensitive adhesive and the elasticized area formed therewith have the following characteristics: a) an adhesive bond strength sufficient to adhere said first and second components together during use of said disposable absorbent article; b) an elongation of at least 50 percent; c) a retractive force of less than 400 grams force per inch width at 90 percent elongation; d) a viscosity of less than 70,000 centipoise at 350° F.; and e) a cold flow value of less than 20 percent at 54° C.
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Citations
33 Claims
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1. A disposable absorbent article having a length and a width defining first and second waist portions and first and second longitudinal marginal portions, said article comprising the following components:
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a backsheet layer;
a topsheet layer; and
an absorbent structure located between said topsheet layer and said backsheet layer, said article including at least one elasticized area formed from an elastomeric, hot melt, pressure-sensitive adhesive, a first component and a second component, said first and second components being adhered to one another by said elastomeric, hot melt pressure-sensitive adhesive, said elastomeric, hot melt pressure-sensitive adhesive and the elasticized area formed therewith being elongateable in a first direction, said elasticized area having an original length in the first direction, said elasticized area being retractable after elongation to a length substantially equivalent to said original length, the elasticized area having the following properties;
a) an adhesive bond strength sufficient to adhere said first and second components together during use of said disposable absorbent article;
b) an elongation of at least 50 percent;
c) a retractive force of less than 400 grams force per inch width at 90 percent elongation;
d) a viscosity of less than 70,000 centipoise at 350°
F.; and
e) a cold flow value of less than 20 percent at 54°
C.- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 20, 21, 22, 23)
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19. A disposable absorbent article having a length and a width defining first and second waist portions and first and second longitudinal marginal portions, said article comprising the following components:
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a backsheet layer;
a topsheet layer; and
an absorbent structure located between said topsheet layer and said backsheet layer, said article including at least one elasticized area formed from an elastomeric, hot melt, pressure-sensitive adhesive, a first component and a second component, said first and second components being adhered to one another by said elastomeric, hot melt, pressure-sensitive adhesive, said elastomeric, hot melt, pressure-sensitive adhesive and the elasticized area formed therewith being elongateable in a first directions said elasticized area having an original length in the first direction, said elasticized area being retractable after elongation to a length substantially equivalent to said original length, the elasticized area having the following properties;
a) an adhesive bond strength of at least 100 grams force per inch width;
b) an elongation of at least 150 percent;
c) a retractive force of less than 275 grams force per inch width at 90 percent elongation;
d) a viscosity of less than 50,000 centipoise at 350°
F.; and
e) a cold flow value of less than 15 percent at 54°
C.
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24. A disposable absorbent article having a length and a width defining first and second waist portions and first and second longitudinal marginal portions, said article comprising:
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a backsheet layer;
a topsheet layer;
an absorbent structure located between said topsheet layer and said backsheet layer; and
at least one elasticized area comprising an elastomeric adhesive adhering a first component to a second component, said elasticized area being capable of elongation in a first direction, said elasticized area having a non-elongated original length in said first direction, said elasticized area being retractable after elongation to a length substantially equivalent to said original length. - View Dependent Claims (25, 26, 27, 28)
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29. A disposable absorbent article having a length and a width defining first and second waist portions and first and second longitudinal marginal portions, said article comprising:
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a backsheet layer;
a topsheet layer;
an absorbent structure located between said topsheet layer and said backsheet layer; and
at least one elasticized area comprising an astomeric adhesive adhering a portion of said backsheet layer to a portion of said topsheet layer, said elasticized area being capable of elongation in a first direction, said elasticized area having a non-elongated original length in said first direction, said elasticized area being retractable after elongation to a length substantially equivalent to said original length an said elasticized area having a cold flow value of less than 20 percent at 54°
C.- View Dependent Claims (30, 31, 32, 33)
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Specification
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Current AssigneeKimberly-Clark Worldwide Incorporated (Kimberly-Clark Corporation)
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Original AssigneeKimberly-Clark Worldwide Incorporated (Kimberly-Clark Corporation)
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InventorsOdorzynski, Thomas Walter, Sherman, Joel Scott
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Primary Examiner(s)Ruhl, Dennis
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Assistant Examiner(s)SHANOSKI, PAUL A
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Application NumberUS08/920,646Time in Patent Office1,397 DaysField of Search604/386, 604/387, 604/389, 604/390, 604/385.16, 604/385.23US Class Current604/385.16CPC Class CodesA61F 13/4902 characterised by the elasti...A61F 13/49413 the edge leakage prevention...A61F 13/49466 the edge leakage prevention...A61L 15/58 Adhesives
