Breathable microporous film and methods for making it

Details Breathable microporous film and methods for making it Breathable microporous film and methods for making it

1990-11-05

1991-04-30

Cannon, James C.

Food or edible material: processes, compositions, and products

Processes

Packaging or treatment of packaged product

2065246, 428 365, 4283155, 4283179, B65B 2504

Patent

active

050116983

ABSTRACT:
A soft, flexible, microporous film is provided having high tensile strength and good air and water vapor transmission rates therethrough while being substantially impenetrable to liquid water. This film is prepared by stretching a casting of a composition of a polyolefin and high levels of CaCO.sub.3 or glass beads and calcium stearate in two directions from 1.5-7 times in each direction to produce a film having a Gurley porosity of from 0.1 to 85 seconds. This film is especially useful for disposable items such as feminine panty liners, diapers, bed sheets, and hospital gowns. When glass beads are substituted for the CaCO.sub.3, the film is useful for battery separators.

REFERENCES:
patent: 4923650 (1990-05-01), Antoon et al.

Affiliated with

Also associated with

Rating

Breathable microporous film and methods for making it does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Breathable microporous film and methods for making it, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Breathable microporous film and methods for making it will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-639598