Self-adhering absorbent article
First Claim
Patent Images
1. An absorbent article comprising:
- a) a cover having a bodyfacing surface with a predetermined area and a garmentfacing surface;
b) an absorbent core adjacent to said garmentfacing surface of said cover; and
c) a hot melt, pressure sensitive adhesive secured to less than about 90 percent of said bodyfacing area, said adhesive selected from the group consisting A-B-A block copolymers and A B-B-A block copolymors, wherein A is a block polymer of mono-vinyl substituted aromatic hydrocarbon and B is an elastomeric block polymer of a conjugated diene and having a Lan δ
at a frequency of about 0.1 radians per second to about 1000 radians per second residing inside a quadrangle ABCD wherein said quadrangle ABCD is defined by graphically plotting frequency in radians per second verse tan δ
referenced to about 20°
Centigrade of said adhesive, said quadrangle ABCD having as points A and D a tan δ
of about 0.06 and 0.4 respectively at a frequency of about 0.1 radians pet second and points B and C at a tan δ
of about 0.1 and about 1.7 respectively at a frequency of about 1000 radians per second.
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Accused Products
Abstract
An absorbent article is provided having an adhesive on the bodyfacing surface for securement of the article to the wearer. The adhesive has a rheological property tan δ at 20° C. ranging from about 0.01 to about 0.6 at a frequency of about 0.1 radian per second and a tan δ ranging from about 0.1 to about 1.7 at a frequency of about 1000 radians per second. Preferably the adhesive is a hot melt adhesive.
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Citations
9 Claims
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1. An absorbent article comprising:
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a) a cover having a bodyfacing surface with a predetermined area and a garmentfacing surface;
b) an absorbent core adjacent to said garmentfacing surface of said cover; and
c) a hot melt, pressure sensitive adhesive secured to less than about 90 percent of said bodyfacing area, said adhesive selected from the group consisting A-B-A block copolymers and A B-B-A block copolymors, wherein A is a block polymer of mono-vinyl substituted aromatic hydrocarbon and B is an elastomeric block polymer of a conjugated diene and having a Lan δ
at a frequency of about 0.1 radians per second to about 1000 radians per second residing inside a quadrangle ABCD wherein said quadrangle ABCD is defined by graphically plotting frequency in radians per second verse tan δ
referenced to about 20°
Centigrade of said adhesive, said quadrangle ABCD having as points A and D a tan δ
of about 0.06 and 0.4 respectively at a frequency of about 0.1 radians pet second and points B and C at a tan δ
of about 0.1 and about 1.7 respectively at a frequency of about 1000 radians per second.- View Dependent Claims (2, 3, 4, 5, 6)
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7. An absorbent article comprising:
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a) a cover having a bodyfacing surface with a predetermined area and a garmentfacing surface;
b) an absorbent core adjacent to said garmentfacing surface of said cover; and
c) a hot melt, pressure sensitive adhesive secured to less than about 90 percent of said bodyfacing area, said adhesive having a tan δ
at a frequency of about 0.1 radians per second to about 1000 radians per second residing inside a quadrangle ABCD wherein said quadrangle ABCD is defined by graphically plotting frequency in radians per second verse Lan δ
referenced to about 20°
Centigrade of said adhesive, said quadrangle ABCD having as points A and D a tan δ
of about 0.06 and 0.4 respectively at a frequency of about 0.1 radians pet second and points B and C at a tan δ
of about 0.1 and about 1.7 respectively at a frequency of about 1000 radians per second, and said adhesive having a primary transition frequency peak greater than about 1000 radians per second.
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8. An absorbent article comprising:
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a) a cover having a bodyfacing surface with a predetermined area and a garmentfacing surface;
b) an absorbent core adjacent to said garmentfacing surface of said cover; and
c) a hot melt, pressure sensitive adhesive secured to less than about 90 percent of said bodyfacing area, said adhesive having a tan δ
at a frequency of about 0.1 radians per second to about 1000 radians per second residing inside a quadrangle ABCD wherein said quadrangle ABCD is defined by graphically plotting frequency in radians per second verse tan δ
referenced to about 20°
Centigrade of said adhesive, said quadrangle ABCD having as points A and D a tan δ
of about 0.06 and 0.4 respectively at a frequency of about 0.1 radians pet second and points B and C at a tan δ
of about 0.1 and about 1.7 respectively at a frequency of about 1000 radians per second, and said adhesive having a secondary peak between a frequency range of about 0.1 and about 1000 radians per second.
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9. An absorbent article comprising:
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a) a cover having a bodyfacing surface with a predetermined area and a garmentfacing surface;
b) an absorbent core adjacent to said garmentfacing surface of said cover; and
c) a hot melt, pressure sensitive adhesive secured to less than about 90 percent of said bodyfacing area, said adhesive selected from the group consisting of block copolymers of styrene-butadiene-styrene, styrene-isoprene-styrene, styrene-ethylenepropylene-styrene, styrene-ethylenebutylene-styrene, and styrene-ethylenepropylene-styrene-ethylenepropylene and having a tan δ
at a frequency of about 0.1 radians per second to about 1000 radians per second residing inside a quadrangle ABCD wherein said quadrangle ABCD is defined by graphically plotting frequency in radians per second verse tan δ
referenced to about 20°
Centigrade of said adhesive, said quadrangle ABCD having as points A and D a tan δ
of about 0.06 and 0.4 respectively at a frequency of about 0.1 radians pet second and points B and C at a tan δ
of about 0.1 and about 1.7 respectively at a frequency of about 1000 radians per second.
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Specification