Nonwoven fabric web with oil sensitive, particulate absorbent of organics
AssigneeImbibitive Technologies Corp.
InventorsJohn S. BRINKMAN, Douglas B. BROWN
Life of this patent
Estimating the term…
Abstract
Article of manufacture for absorbing an organic chemical or organic chemical mixture includes a construction of a nonwoven fabric web with an oil sensitive particulate absorbent of the organic chemical or mixture. The nonwoven fabric web can be melt blown and/or spunbond product(s) or a hybrid meltblown-spunbond product. The oil sensitive, particulate absorbent can be provided as hydrophobic, water insoluble, particulate organic polymeric particles that, when contacted with a organic substance or mixture, absorb or imbibe it substantially thereupon. The oil sensitive absorbent particles may remain with the article essentially without sifting.
Claims20
An article of manufacture for absorbing a substance of an organic chemical or organic chemical mixture, which comprises a construction of a nonwoven fabric web with an oil sensitive, particulate absorbent of said substance, wherein the oil sensitive, particulate absorbent is retained within the nonwoven fabric web essentially without sifting therefrom.
An article of manufacture for absorbing a substance of a substantially hydrophobic fluid organic chemical or organic chemical mixture, which comprises the following:
- a hybrid nonwoven fabric web including a first material;
- and a second material defined by spun-blown fibers, which are defined by a thermoplastic composition that contains at least one polymer having a melt flow rate between about 5 grams per 10 minutes to about 500 grams per 10 minutes at 230°, have an average fiber diameter (AFD) between about 1 micron and 10 microns, and define a standard deviation of fiber of fiber diameter with a magnitude that is at least 50% of AFD;
- and
- as the first material, an oil sensitive, particulate absorbent of said substance, which is or had been provided as hydrophobic, water insoluble, oil sensitive, polymeric organic particles that, when contacted with said substance, absorb or imbibe said substance and swell substantially thereupon.
An article of manufacture for absorbing an organic chemical or organic chemical mixture comprising the following:
- a hybrid nonwoven web including a fiber matrix having comingled fibers of multiple materials, including a first material;
- and at least a second material defined by first and second spun-blown fibers, each of the first and second spun-blown fibers being formed from a thermoplastic composition that contains at least on polymer having a melt flow rate from between about 5 grams per 10 minutes to about 6,000 grams per 10 minutes at 230° C., an average fiber diameter between about 1 micron and 10 microns, and a standard deviation of fiber diameter between about 0.9 micron to about 5 microns, wherein the hybrid nonwoven web has a tensile strength of at least about 5 gf/gsm/cm width measured in a machine direction, and the nonwoven web defines an average pore size of less than 30 microns;
- and
- a particulate absorbent of an organic chemical or organic chemical mixture, which is or had been provided as hydrophobic, water insoluble, particulate organic polymeric particles that, when contacted with a substantially hydrophobic fluid organic substance when present, absorb or imbibe said substance and swell substantially thereupon.
Dependencies are inferred from the claim text.