Northstar Research Institute, Ltd.

Progeny Products, Inc.

Ralph H Forester

Arthur B Finkelstein

Roy E Larson

An environmentally sound absorbent insert for use with cloth diapers and the like. The insert comprises a sandwich of first and second webs constructed of non-toxic, biodegradable, pliable, liquid-absorbent material, such as tissue paper, with a layer of non-toxic, biodegradable, liquid-absorbent material sandwiched between them. The sandwich is bonded in an environmentally sound manner, such as by a mechanical bond (such as crimping) or by a non-toxic, biodegradable adhesive. The insert is used by placing it in the diaper so that the absorbent insert is sandwiched between layers of cloth. The cloth acts as a wick to draw fluids from the body of the wearer to the absorbent insert, to be retained until changing. One feature is a process for making the insert via a continuous feed process.

Absorbent insert

Unsupported ultrathin polymer film is made in bulk form by floating the film on a bath, transferring the floating film to a release substrate, drying the resulting film/substrate composite, separating the film from the substrate, and retrieving the unsupported film, e.g. in the form of a convoluted roll provided with anti-blocking agent in between the convolutions. The bulk product can be made into thermal insulating material, flake-like weather modifying agents, etc.

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Minneapolis, MN, United States of America

Ralph H Forester