Elastic dust mop head cover

• US 4,823,427 A
• Filed: 04/04/1986
• Issued: 04/25/1989
• Est. Priority Date: 04/04/1986
• Status: Expired due to Term

• Current Assignee: Kimberly-Clark Worldwide Incorporated (Kimberly-Clark Corporation)
• Original Assignee: Kimberly-Clark Corporation
• Inventors: Morell, Charles J., Gibbs, Lesley L.
• Primary Examiner(s): NOT, DEFINED
• Application Number:
  US06/848,431
• Time in Patent Office: 1,117 Days
• Field of Search: 15/247, 15/104.93, 15/228, 15/231, 15/232, 15/233, 15/227, 428/192, 428/152, 428/121, 428/122, 428/130, 428/913, 382/112, 382/118, 150/52 R
• US Class Current: 15/247
• CPC Class Codes: A47L 13/20 Mops
• CPC Class Codes: A47L 13/44 Securing scouring-cloths to the brush or like body of the implement
• CPC Class Codes: Y10S 428/913 Material designed to be responsive to temperature, light, moisture
• CPC Class Codes: Y10T 428/2419 Fold at edge
• CPC Class Codes: Y10T 428/24198 Channel-shaped edge component [e.g., binding, etc.]
• CPC Class Codes: Y10T 428/24446 Wrinkled, creased, crinkled or creped
• CPC Class Codes: Y10T 428/24777 Edge feature

Abstract

An abrasion-resistant elastic cloth which exhibits excellent dust pickup and dust retention is disclosed. A dust mop head cover may be formed from the cloth fabric. The dust mop head cover may be secured to the mop head without fasteners.

Claims

1. A shaped elastic cover adapted to be stretchably fitted over a dusting implement in closely conforming relationship comprising:

a length of elastic nonwoven maerial having a peripheral marginal edge and being elastic in at least one direction, said length of material having adjacent portions of said peripheral edge aligned in juxtaposition and joined together, the joined sections being on opposing sections of said length of elastic nonwoven material forming a pouch, and unjoined portions of said peripheral marginal edge forming a slit adapted to receive the implement therethrough into the pouch, said cover being adapted to be secured onto the dusting implement solely by elastic forces exerted by the material against the dusting implement.

2. The elastic cover of claim 1 which has a dust gathering capacity of at least about 0.185 grams per square inch of web;

and an abrasion resistance of at least about 50 cycles on a Taber scale.

3. The elastic cover of claim 1 which exhibits an Ames bulk of at least about 0.07 in.

4. The elastic cover of claim 1 which exhibits a non-linting characteristic of less than about 10 particles sized at about 10 microns on a Climet scale.

5. The elastic cover of claim 1 having a water absorbency of at least about 150% of the weight of the cloth.

6. The elastic cover of claim 1 having an oil absorbency of at least about 400% of the weight of the cloth.

7. The elastic cover of claim 1 which is stretchable by at least about 25% and recoverable by at least about 80%.

8. The elastic cover of claim 1 which exhibits a grab tensile peak load strength of at least about 5 lbs.

9. The elastic cover of claim 1 which exhibits a tear trap tensile peak load strength of at least about 3 lbs.

10. The elastic cover of claim 1 which exhibits a drape of not more than about 4 cm.

11. The elastic cover of claim 1 which exhibits a dynamic coefficient of friction of less than about 1 (INDA).

12. The elastic cover of claim 1 which exhibits a thermal stability of at least about 140°

F.

13. The elastic cover of claim 1 which exhibits a chemical stability to at least one of the group of ammonia, caustic, polyethylene glycol and oil.

14. The elastic cover of claim 1 wherein said nonwoven elastic material is selected from the group consisting of one or more of poly(ethylene-vinyl acetate), thermoplastic polyurethanes, A-B-A'"'"' block copolymers, blends of one or more of poly(ethylene-vinyl acetate), thermoplastic polyurethanes, and A-B-A'"'"' block copolymers, and blends of one or more of poly(ethylene-vinyl acetate), thermoplastic polyurethanes, and A-B-A'"'"' block copolymers with one or more polyolefins.

15. The elastic cover of claim 8 wherein the gathered web of spun-bonded material is selected from the group consisting of one or more polyolefins.

16. The elastic cover of claim 15 wherein the gathered surface web is formed from a material selected from the group consisting of one or more polyethylenes and one or more polypropylenes.

17. The elastic cover of claim 14 wherein at least one of said webs comprises one or more materials selected from the group consisting of staple, natural, and synthetic fibers and wood pulp fibers.

18. The elastic cover of claim 17 wherein said staple fibers are selected from the group consisting of cotton fibers, wool fibers, and cut synthetic fibers.

19. The elastic cover of claim 1 wherein said cloth includes two gathered nonwoven surface webs and an elastic nonwoven web therebetween, the peripheral edge of the cloth having respective opposed machine direction marginal edges and opposed cross-machine direction marginal edges, said cloth being folded along a line extending in the machine direction so that opposed machine direction marginal edges are in closely spaced relationship defining the slit, and the cross-machine marginal edges being the portions of the peripheral edges in overplaced juxtaposition relationship and joined together to form the pouch.

28. The elastic cover of claim 14, further including at least one gatherable web joined to said elastic web at least at two locations, said gatherable web being gathered between said two locations.

20. A disposable elastic cover for receiving an implement therein comprising a web of elastic nonwoven fibers having lateral marginal edges and transverse edges, said web being extensible in at least one direction and being folded at least once along a line extending in such direction to form at least two layers, the marginal edges in said one direction being aligned to form a slit and corresponding opposed portions of the other margins being joined together to form a cover closed along the fold and the joined together margins and open along the slit for receiving the implement therein said cover being stretchable in said one direction for facilitating the reception of the dusting implement therein and said cloth recovering when released for allowing the cover to conform closely to the implement.

21. The disposable cover of claim 20 wherein the slit is opposite the fold.

22. The disposable elastic cover of claim 20 in which the web is folded at least twice and the slit lies in one side of the cover between the folds.

23. A disposable elastomeric cover for receiving a mop frame therein comprising a web of nonwoven heat sealable thermoplastic elastic material having first and second opposed marginal edges, said web being folded so that the first marginal edges lie in opposition centrally of the web and form a slit therein, each second marginal edge being heat bonded to itself so as to form closed marginal edges of the cover for receiving the dust mop frame therein through the slit, said cover having overall dimensions smaller than corresponding overall dimensions of the mop frame so that it is necessary to stretch the cover to snugly fit the dust mop frame.

24. The cover of claim 23 wherein the web is formed of at least one layer of elastomeric nonwoven bonded fibers.

25. The cover of claim 23 wherein the web is formed of a composite elastic material having at least one gatherable web which is extensible and contractable with the elastic web upon stretching and relaxing of the composite material.

26. An elastic cover formed from a nonwoven cloth having elasticity in at least one direction, said cloth including two gatherable nonwoven surface webs and one elastic nonwoven web between the surface webs, said cloth having respective opposed machine direction and cross-machine direction lateral edges;

wherein said cloth is folded along a line extending in a machine direction so that the opposed machine direction lateral edges are in substantial abutting relationship and define a slit therebetween and the cross-machine direction lateral edges are overplaced in juxtaposed relationship; and

wherein the juxtaposed cross-machine direction lateral edges are joined together, whereby said slit is adapted to elastically receive an implement having at least one dimension greater than a corresponding dimension of said cover so that the cover closely conforms to and is elastically secured to said implement.

27. An elastic cover adapted to be stretchably fitted over a dusting implement in closely conforming relationship comprising:

a length of cloth defined by peripheral marginal edges having elasticity in at least one direction and being folded on itself along a line extending in the direction of elasticity, portions of said peripheral marginal edges near the fold being joined in juxtaposed relationship, and portions of the peripheral margins intermediate the joined portions being in spaced relationship and forming an open slit, a pocket defined by the folded cloth and joined portions of the peripheral marginal edges for receiving the implement therein, and when the implement is relatively larger than the cover, the cover is adapted to be stretch fitted over the implement and secured thereto in closely conforming relationship by forces resulting from stretching the cover over the implement.

29. An elastic dust mop head cover comprising:

a web of thermoplastic nonwoven materials which is elastic in at least one direction and which is configured to form a pouch and to define an opening into the interior of said pouch;

wherein said opening is adapted to allow insertion of a mophead into said interior of said pouch; and

wherein said cover is adapted to be secured in closely conforming relationship to said head solely by elastic forces exerted by the cover against the head.

30. The elastic cover of claim 29, wherein said thermoplastic nonwoven elastic material is selected from the group consisting of one or more of poly(ethylene-vinyl acetate), thermoplastic polyurethanes, A-B-A'"'"' block copolymers, blends of one or more of poly(ethylene-vinyl acetate), thermoplastic polyurethanes, and A-B-A'"'"' block copolymers, and blends of one or more of poly(ethylene-vinyl acetate), thermoplastic polyurethanes, and A-B-A'"'"' block copolymers with one or more polyolefins.

31. The elastic cover of claim 29, further including at least one gatherable web joined to said elastic web at least at two locations, said gatherable web being gathered between said two locations.

32. The elastic cover of claim 31, wherein the gatherable web is formed from one or more polyolefins.

33. The elastic cover of claim 32, wherein the polyolefin is selected from the group consisting of one or more polyethylenes, one or more polypropylenes and blends thereof.

34. The elastic cover of claim 31, which has a dust gathering capacity of at least about 0.185 grams per inch square of web;

and an abrasion resistance of at least about 50 cycles on a Taber scale.

35. The elastic cover of claim 31, which exhibits an Ames bulk of at least about 0.07 in.

36. The elastic cover of claim 31, which exhibits a non-linting characteristic of less than about 10 particles sized at about 10 microns on a Climet scale.

37. The elastic cover of claim 31, having a water absorbance of at least about 150% of the weight of the cloth.

38. The elastic cover of claim 31, having an oil absorbency of at least about 400% of the weight of the cloth.

39. The elastic cover of claim 31, which exhibits a grab tensile peak load strength of at least about 5 lbs.

40. The elastic cover of claim 31, which exhibits a tear trap tensile peak load strength of at least about 3 lbs.

41. The elastic cover of claim 31, which exhibits a drape of not more than about 4 cm.

42. The elastic cover of claim 31, which exhibits a dynamic coefficient of friction of less than about 1 (INDA).

43. The elastic cover of claim 31, which exhibits a thermal stability of at least 140°

F.

44. The elastic cover of claim 31, which exhibits a chemical stability to at least one of the group of ammonia, caustic, polyethylene glycol and oil.

45. The elastic cover of claim 31, comprising two gatherable webs with each gatherable web being joined to opposite sides of said elastic web at least at two locations and being gathered between said two locations.

46. The elastic cover of claim 45, wherein at least one of said gatherable webs comprises one or more materials selected from the group consisting of staple, natural, and synthetic fibers and wood pulp fibers.

47. The elastic cover of claim 46, wherein said stable fibers are selected from the group consisting of cotton fibers, wool fibers, and cut synthetic fibers.

48. The elastic cover of claim 29, wherein said thermoplastic elastic nonwoven material includes two gathered nonwoven surface webs and an elastic nonwoven web therebetween, the peripheral edge of the cloth having respective opposed machine direction marginal edges and opposed cross-machine direction marginal edges, said cloth being folded along a line extending in the machine direction so that opposed machine direction marginal edges are in closely spaced relationship defining the slit, and the cross-machine direction marginal edges being the portions of the peripheral edges in overplaced juxtaposition relationship and joined together to form the pouch.