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Applications of Flexible Absorbent Binder Technology

IP.com Disclosure Number: IPCOM000126156D
Publication Date: 2005-Jul-05
Document File: 5 page(s) / 120K

Publishing Venue

The IP.com Prior Art Database

Related People

Dave Fell: AUTHOR [+4]

Abstract

Flexible Absorbent Binder (FAB) is a variation of superabsorbent chemistry that is composed of acrylic acid and a latent crosslinking agent. This combination allows the material to be applied to any substrate, (such as fabric, fiber, or film) as a solution by means of printing, spraying, or coating followed by a drying step which initiates a crosslinking reaction which resulting in an insoluble superabsorbent coating on the substrate. The resulting coated substrates can be used for a variety of applications for absorbent products. FAB can be applied to many different substrates and in specified patterns. This allows for the possibility of intake, distribution, and retention in a single structure making a fully functional product in a simple form. Various uses for FAB technology are described.

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Applications of Flexible Absorbent Binder Technology

Dave Fell, Tom Keenan, Dave Soerens, and Kristen Salzgeber

Kimberly-Clark Corporation, Neenah, Wisconsin

Background

Flexible Absorbent Binder (FAB) is a variation of superabsorbent chemistry that is composed of acrylic acid and a latent crosslinking agent. This combination allows the material to be applied to any substrate, (such as fabric, fiber, or film) as a solution by means of printing, spraying, or coating followed by a drying step which initiates a crosslinking reaction which resulting in an insoluble superabsorbent coating on the substrate. The resulting coated substrates can be used for a variety of applications for absorbent products. FAB can be applied to many different substrates and in specified patterns. This allows for the possibility of intake, distribution, and retention in a single structure making a fully functional product in a simple form.

FAB is an acrylic acid copolymer that develops absorbency properties after it is applied to a substrate. The chemistry of FAB is similar to commonly commercial superabsorbents except that the latent crosslinking component allows it to be applied as a liquid and then converted into a superabsorbent film formed on the substrate of choice. As a result, materials with desirable attributes (for example, fast intake), can be integrated with FAB technology to create numerous systems combining multiple functions in fewer absorbent layers which will help enable thinner products. This enables the development of thin multifunctional absorbent composite materials. This benefit is particularly applicable for pantiliners. More applications of this technology are described in U.S Patents 6,737,491B2, US6,822,135B2, and US6,849,685 B2 to Soerens et. al. and in U.S. Patent applications 2004/0019166A1, 2004/0018365A1, 2004/0019168A1, and 2004/0019169A1 to Soerens et. al.

Continued development of the FAB technology has uncovered new opportunities for application to disposable absorbent products which are discussed below.

Flexible Absorbent Binder Underpad

FAB can be used to create an absorbent underpad, bedpad, chair protector, mattress protector or other absorbent pad designed to provide very thin absorbent protection. Such a pad would typically have several components including:

1. A hydrophilic liquid permeable intake and distribution layer
2.
Flexible absorbent binder applied to a substrate.
3.
An absorbent binder substrate material ranging from about 10 to about 2000 gsm (grams per square meter) such as a bonded carded web, a spunbonded polypropylene fabric, or a coform material.
4.
A liquid impermeable material to serve as a backsheet such as a thin 25 micron thick polyethylene or polypropylene film.
5.
A non-skid feature which could include a non-skid coating and / or material (hook materials, for example, such as those used in hook and loop fastening systems) for adherence to a bed, chair, mattress, etc. Such features are disclosed i...