Internally lubricated fiber, cardable hydrophobic staple fibers

Details Internally lubricated fiber, cardable hydrophobic staple fibers Internally lubricated fiber, cardable hydrophobic staple fibers

1996-09-17

1998-06-09

Edwards, Newton

Fabric (woven, knitted, or nonwoven textile or cloth, etc.)

Nonwoven fabric

Including strand or fiber material which is of specific...

442361, 428372, 428359, D02G 300

Patent

active

057633347

ABSTRACT:
Hydrophobic polyolefin fibers are provided with an internal hydrophobic which X, Y, R.sup.1, and R.sup.2, which may be the same or different, or substituted or unsubstituted independently of each other, are aliphatic groups having not more than about sixteen carbon atoms, R.sup.1 and R.sup.2 also being selected from among aryl groups, and z being a positive number sufficiently high that the polysiloxane is hydrophobic (z is generally at least 10). The invention also provides a novel polymer melt for spinning these hydrophobic fibers. The fibers can be cut into staple lengths and carded and bonded to form hydrophobic woven and nonwoven products suitable for use in hygiene devices such as diapers. Such devices are improved by these fibers, which, as spun, present a greater hydrophobicity than melt-spun polyolefin fibers lacking the internal siloxane lubricant; the improved hydrophobicity is evidenced by an advancing contact angle for the as-spun fibers of at least about 95.degree..

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