Back to results
US 6,135,987 AGranted
Synthetic fiber
AssigneeKimberly-Clark Worldwide, Inc.
InventorsFu-Jya Daniel Tsai, Brian Thomas Etzel
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
AssigneeKimberly-Clark Worldwide, Inc.
InventorsFu-Jya Daniel Tsai, Brian Thomas Etzel
Estimating the term…
A process is disclosed for forming a synthetic fiber including providing a first component of an aliphatic polyester polymer a second component of a multicarboxylic acid, mixing the first component aliphatic polyester polymer and the second component multicarboxylic acid to form an unreacted specified thermoplastic composition, and melt blending the unreacted specified thermoplastic composition in an extruder or a mixer. The second component multicarboxylic acid lubricates the extruder and provides a nucleating agent for crystallizing the specified thermoplastic composition to form a mean crystal size less than about 120 Angstroms. Fiber composed of the specified thermoplastic composition has a mean crystal size less than about 120 Angstroms. The fiber has a glass transition temperature (Tg) less than about 55.degree. C. In one aspect, a first component of polylactic acid and a second component of adipic acid provide synthetic fibers in a nonwoven structure used in a biodegradable and compostable disposable absorbent product for the absorption and removal of body fluids.
A process for forming a synthetic fiber, comprising:
A process for forming a synthetic fiber, comprising:
A nonwoven web absorbent article formed from a fiber composed of a specified thermoplastic composition having a mean crystal size less than about 120 Angstroms, wherein said fiber is formed by:
Dependencies are inferred from the claim text.