Title:
PROCESS FOR MAKING A SUPER ABSORBENT POLYMER-IMPREGNATED NON-WOVEN ABSORBENT CORE FOR PERSONAL HYGIENE PRODUCTS
Document Type and Number:
WIPO Patent Application WO2003059228
Kind Code:
A3
Abstract:
A process is provided for forming a super absorbent composite for use in personal hygiene products, comprising a non-woven core with SAP uniformly distributed throughout the thickness of the core and bonded to the core with an adhesive. A non-woven core is provided to a processing line. An adhesive is introduced throughout the thickness of the core. Then the core is impregnated with a super absorbent polymer by blowing a stream of super absorbent polymer and air onto the core at a sufficiently high velocity to cause the super absorbent polymer to penetrate the surface of the core. The super absorbent polymer is distributed uniformly throughout the cross-section of the non-woven core and immobilized by the adhesive. Alternatively, the super absorbent polymer is blown into a non-woven core without adhesive and immobilized by a fiber matrix in the non-woven core.
Inventors:
HARRIZ JOHN M
Application Number:
PCT/US2002/041374
Publication Date:
October 09, 2003
Filing Date:
December 23, 2002
Export Citation:
Assignee:
TYCO HEALTHCARE RETAIL GROUP I (US)
International Classes:
A61F13/15; A61L15/60; (IPC1-7): A61F13/15; A61L15/60
Domestic Patent References:
| WO1996013335A1 | 1996-05-09 | |||
| WO2000038604A1 | 2000-07-06 |
Foreign References:
| EP1110521A1 | 2001-06-27 | |||
| US4882204A | 1989-11-21 | |||
| US4927582A | 1990-05-22 | |||
| US5350597A | 1994-09-27 | |||
| US5171237A | 1992-12-15 | |||
| US5248524A | 1993-09-28 | |||
| EP1023884A2 | 2000-08-02 |
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