Patent ID: 11891737
Assignee: FITESA (CHINA) AIRLAID COMPANY LIMITED
Field: Surface technology, coating (Chemistry)
Classification: CPC B  D  A | IPC A  B  D

Claim 0:
1. A method of preparing a composite sheet, comprising:
providing a carded nonwoven fabric, the carded nonwoven fabric comprising staple fibers;
depositing a first airlaid layer onto a surface of the carded nonwoven fabric to form a composite sheet, the first airlaid layer comprising a mixture of cellulose staple fibers and non-cellulose staple fibers comprising a polymer; and
air through bonding the composite sheet, with heated gas, to cause the polymer of the non-cellulose staple fibers of the first airlaid layer to melt and fuse with adjacent staple fibers of the fabric, adjacent fibers of the cellulose staple fibers and adjacent fibers of the non-cellulose staple fibers,, wherein the non-cellulose staple fibers of the airlaid layer are bonded to each other, to the cellulose staple fibers, and to the staple fibers of the carded nonwoven fabric, and wherein a basis weight of the composite sheet is from about 40 to 225 g/m2, and the composite sheet having
a fluid acquisition time ranging from about 0.5 seconds to about 2 seconds;
a fluid absorption ranging from about 15 to 30 g/g;
a fluid retention ranging from about 8 to 15 g/g;
a fluid wicking height ranging from about 10 to 50 mm; and
a resiliency ranging from about 30 to 60%.