Soft, nonwoven web having high intensity and low intensity bonds

Details Soft, nonwoven web having high intensity and low intensity bonds Soft, nonwoven web having high intensity and low intensity bonds

1975-10-28

1976-08-03

Cannon, James C.

Stock material or miscellaneous articles

Structurally defined web or sheet

Discontinuous or differential coating, impregnation or bond

156290, 156306, 428212, 428196, B32B 3120, D04H 314, D04H 316

Patent

active

039730689

ABSTRACT:
A soft, nonwoven web is produced by adding directly to a thermoplastic polymer at the time of extrusion a lubricating agent having an HLB number in the range of 8 to 20 and a molecular weight in the range of from 200 to 4000. The lubricating agent is uniformly distributed into the polymer as extruded into filaments. The filaments are collected to form a web and then subjected to heat treatment in the range of from 180.degree.-260.degree.F. for at least about 1-7 seconds. The lubricating agent migrates to the surface of the fibers producing a release effect and preventing secondary bonding from occurring. After pattern bonding to provide spaced areas of high intensity bonds, the result is a soft, strong nonwoven web having particular utility as a liner for disposable diapers and catamenial devices.

REFERENCES:
patent: 3748216 (1973-07-01), Brock
patent: 3793133 (1974-02-01), Beaudoin et al.
patent: 3855045 (1974-12-01), Brock
patent: 3855046 (1974-12-01), Hansen et al.
patent: 3870567 (1975-03-01), Palmer

Affiliated with

Also associated with

Rating

Soft, nonwoven web having high intensity and low intensity bonds does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Soft, nonwoven web having high intensity and low intensity bonds, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Soft, nonwoven web having high intensity and low intensity bonds will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1930544