Diaper providing temperature insensitive liquid handling
First Claim
1. A liquid acquisition member for an absorbent article, comprising:
- a multitude of polyester fibers and a latex binder, said liquid acquisition member comprising about 20 to 40 weight percent of said binder and about 60 to 80 weight percent of said polyester fibers, wherein said polyester fibers comprise about 20 to 80 weight percent of a first type of fibers and about 20 to 80 weight percent of a second type of fibers, the second type of fibers comprising spiral-crimp fibers in the form of hollow chemically homogeneous bi-component fibers, and wherein said binder comprises a dispersion of a polymer substance in an essentially aqueous medium, said polymer substance being capable of forming a film, said film having a tan δ
value at 20°
C. and at 40°
C., wherein said tan δ
value at 40°
C. is not greater than said tan δ
value at 20°
C.
1 Assignment
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Accused Products
Abstract
The present invention relates to absorbent articles, such as diapers and sanitary napkins, and acquisition members useful for such articles. More specifically, the invention relates to an acquisition member comprising a multitude of fibers and a latex binder, the liquid acquisition member having a void volume of at least 7 cubic centimeter per gram in the temperature range from 20° C. to 40° C., the binder comprising a dispersion of a polymer substance in an essentially aqueous medium, the polymer substance being capable of forming a film, said film having a tan δ value, as defined herein, at 20° C. and at 40° C., wherein the tan δ value at 40° C. is not greater than said tan δ value at 20° C.
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Citations
9 Claims
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1. A liquid acquisition member for an absorbent article, comprising:
- a multitude of polyester fibers and a latex binder, said liquid acquisition member comprising about 20 to 40 weight percent of said binder and about 60 to 80 weight percent of said polyester fibers, wherein said polyester fibers comprise about 20 to 80 weight percent of a first type of fibers and about 20 to 80 weight percent of a second type of fibers, the second type of fibers comprising spiral-crimp fibers in the form of hollow chemically homogeneous bi-component fibers, and wherein said binder comprises a dispersion of a polymer substance in an essentially aqueous medium, said polymer substance being capable of forming a film, said film having a tan δ
value at 20°
C. and at 40°
C., wherein said tan δ
value at 40°
C. is not greater than said tan δ
value at 20°
C. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
- a multitude of polyester fibers and a latex binder, said liquid acquisition member comprising about 20 to 40 weight percent of said binder and about 60 to 80 weight percent of said polyester fibers, wherein said polyester fibers comprise about 20 to 80 weight percent of a first type of fibers and about 20 to 80 weight percent of a second type of fibers, the second type of fibers comprising spiral-crimp fibers in the form of hollow chemically homogeneous bi-component fibers, and wherein said binder comprises a dispersion of a polymer substance in an essentially aqueous medium, said polymer substance being capable of forming a film, said film having a tan δ
Specification