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1. (WO2017095483) OIL ABSORBENT WIPING PRODUCT
Note: Text based on automatic Optical Character Recognition processes. Please use the PDF version for legal matters

What Is Claimed:

1. A dry wiper for picking up oily substances comprising:

a first nonwoven outer layer containing synthetic fibers;

an oleophilic elastic layer; and

a second nonwoven outer layer containing synthetic fibers;

wherein the first outer layer and the second outer layer have been stretch bonded to the elastic layer to form a laminate such that the laminate has a stretch-to-stop of at least 30% in one direction at a load of 2000 grams force and such that the first nonwoven outer layer forms a gathered layer that has a basis weight ratio of greater than about 1.3;

and wherein the first outer layer and the second outer layer have been stretch bonded to the elastic layer according to a bond pattern that occupies from about 3% to about 25% of a surface area of the elastic layer; and

wherein the resulting dry wiper has an oil absorbency of at least 8 grams of oil per gram of wipe, such as at least 10 grams of oil per gram of wipe, such as at least 11 grams of oil per gram of wipe, such as at least 12 grams of oil per gram of wipe.

2. A dry wiper as defined in any of the preceding claims, wherein the laminate has a stretch-to-stop of from about 40% to about 150% in the one direction.

3. A dry wiper as defined in any of the preceding claims, wherein the elastic layer comprises a thermoplastic elastomer, the elastic layer being capable of absorbing at greater than 0.8 g/g of oil after 24 hours.

4. A dry wiper as defined in any of the preceding claims, wherein the first nonwoven outer layer comprises a spunbond web that has a basis weight ratio of greater than about 1.4, such as greater than about 1.5.

5. A dry wiper as defined in any of the preceding claims, wherein the first outer layer and the second outer layer have been stretch bonded to the elastic layer such that the first nonwoven outer layer defines at least one pleated area defined by a plurality of parallel folds, at least certain of the pleats having a pleat amplitude of greater than about 300 microns, such as greater than about 400 microns, such as greater than about 600 microns, and wherein the pleated area has a pleat frequency of from about 0.5 pleats per millimeter to about 8 pleats per millimeter, such as from about 1 pleat per millimeter to about 5 pleats per millimeter.

6. A dry wiper as defined in any of the preceding claims, wherein the second nonwoven outer layer comprises a meltblown web or a coform web.

7. A dry wiper as defined in any of claims 1 -5, wherein the second nonwoven outer layer comprises a spunbond web.

8. A dry wiper as defined in any of the preceding claims, wherein the elastic layer comprises a film formed from a thermoplastic elastomer.

9. A dry wiper as defined in claim 8, wherein the elastic layer comprises a continuous, non-apertured film.

10. A dry wiper as defined in claim 8, wherein the elastic layer comprises an apertured film.

11. A dry wiper as defined in any of claims 1 -7, wherein the elastic layer comprises a nonwoven elastic layer.

12. A dry wiper as defined in claim 11 , wherein the nonwoven elastic layer comprises a meltblown web.

13. A dry wiper as defined in any of the preceding claims, wherein the elastic layer has a basis weight of from about 1.5 gsm to about 20 gsm, such as from about 2 gsm to about 10 gsm.

14. A dry wiper as defined in any of the preceding claims, wherein the wiper has a wiping efficiency of greater than 200%, such as greater than 225%, such as greater than 250% when tested against the first nonwoven outer layer.

15. A dry wiper as defined in any of the preceding claims, wherein the synthetic fibers contained in the first nonwoven outer layer have a denier of greater than about 0.1 , such as greater than about 0.5, such as greater than about 1.0, such as greater than about 1.5, such as greater than about 2.0, such as greater than about 2.2, such as greater than about 2.5, the synthetic fibers having a denier of less than about 8.

16. A dry wiper as defined in any of the preceding claims, wherein the first nonwoven outer layer and the second nonwoven outer layer are thermally bonded to the elastic layer.

17. A dry wiper as defined in any of the preceding claims, wherein the first nonwoven outer layer and the second nonwoven outer layer are ultrasonically bonded to the elastic layer.

18. A dry wiper as defined in any of the preceding claims, wherein one or more of the outer layers includes at least one microscrubber, wherein the microscrubber comprises an area where the fibers of the outer layer have been thermally bonded together.

19. A dry wiper as defined in any of the preceding claims, wherein the wiper comprises at least one internal functional surface, the at least one internal functional surface forming a reservoir for storage of oil and contaminants.

20. A dry wiper as defined in any of the preceding claims, wherein an oil absorbing composition is applied to the wiper or one or more portions thereof.

21. A dry wiper product comprising a plurality of dry wipers as defined in any of the preceding claims, the dry wipers being contained within an outer package.

22. A dry wiper for picking up oily substances comprising:

a first nonwoven outer layer containing synthetic fibers;

an oleophilic elastic layer, the elastic layer comprising a thermoplastic elastomer, the thermoplastic elastomer including an amorphous portion and a crystalline portion, the crystalline portion comprising from about 3% to about 25% of the thermoplastic elastomer, the thermoplastic elastomer also including hard block sections that are partially crystalline and amorphous soft block sections, the soft block sections being oil absorbent while the hard block sections prevent the thermoplastic elastomer from dissolving in oil; and

a second nonwoven outer layer containing synthetic fibers;

wherein the first outer layer and the second outer layer have been stretch bonded to the elastic layer to form a laminate such that the laminate has a stretch-to-stop of at least 30% in one direction at a load of 2000 grams force and such that the first nonwoven outer layer forms a gathered layer that has a basis weight ratio of greater than about 1.3.

23. A dry wiper as defined in claim 15, wherein the elastic layer comprises a continuous film.

24. A dry wiper as defined in claim 15 or 16, wherein the thermoplastic elastomer contained in the elastic layer comprises an ethylene a-olefin copolymer, a propylene a-olefin copolymer, or a combination thereof.

25. A dry wiper as defined in any of claims 15-17, wherein the thermoplastic elastomer contained in the elastic layer comprises an ethylene octene block copolymer.

26. A dry wiper as defined in claim 15 or 16, wherein the thermoplastic elastomer contained in the elastic layer comprises a polystyrene-polyisoprene-polystyrene copolymer, the copolymer containing polystyrene in an amount from about 5% to about 20% by weight.

27. A dry wiper as defined in claim 15, wherein the elastic layer comprises a nonwoven web.

28. A dry wiper as defined in any of the preceding claims, wherein one or more of the outer layers includes at least one microscrubber, wherein the microscrubber comprises an area where the fibers of the outer layer have been thermally bonded together.

29. A dry wiper as defined in any of the preceding claims, wherein the wiper comprises at least one internal functional surface, the at least one internal functional surface forming a reservoir for storage of oil and contaminants.