| Cleaning sheets comprising a polymeric additive to improve particulate pick-up and minimize residue left on surfaces and cleaning implements for use with cleaning sheets -> Monitor Keywords |
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Cleaning sheets comprising a polymeric additive to improve particulate pick-up and minimize residue left on surfaces and cleaning implements for use with cleaning sheetsRelated Patent Categories: Brushing, Scrubbing, And General Cleaning, Implements, Fabric, Wiper, Dauber, Or Polisher, Mops And HeadsCleaning sheets comprising a polymeric additive to improve particulate pick-up and minimize residue left on surfaces and cleaning implements for use with cleaning sheets description/claimsThe Patent Description & Claims data below is from USPTO Patent Application 20070107156, Cleaning sheets comprising a polymeric additive to improve particulate pick-up and minimize residue left on surfaces and cleaning implements for use with cleaning sheets. Brief Patent Description - Full Patent Description - Patent Application Claims
CROSS-REFERENCE TO RELATED APPLICATION [0001] This application is a continuation application of U.S. application Ser. No. 09/788,761, filed Feb. 20, 2001 which claims the benefit of U.S. Provisional Application Ser. No. 60/184,780 filed Feb. 24, 2000. TECHNICAL FIELD [0002] The present invention relates to cleaning implements and cleaning sheets particularly suitable for removal and entrapment of dust, lint, hair, sand, food crumbs, grass and the like. BACKGROUND OF THE INVENTION [0003] The use of nonwoven sheets for dry dust-type cleaning are known in the art. Such sheets typically utilize a composite of fibers where the fibers are bonded via adhesive, entangling or other forces. See, for example, U.S. Pat. Nos. 3,629,047 and 5,144,729. To provide a durable wiping sheet, reinforcement means have been combined with the staple fibers in the form of a continuous filament or network structure. See, for example, U.S. Pat. Nos. 4,808,467, 3,494,821 and 4,144,370. Also, to provide a product capable of withstanding the rigors of the wiping process, prior nonwoven sheets have employed strongly bonded fibers via one or more of the forces mentioned above. Such a cleaning sheet is described in European patent applications EP 774,229 A2 and EP 777,997 A2, which utilize continuous filaments bonded to a base sheet via heat-seal lines. While durable materials can be obtained, such strong bonding may adversely impact the materials' ability to pick up and retain particulate dirt. In an effort to address this concern, an additive consisting of mineral oil has been applied to such cleaning sheets at relatively high levels. However, a mineral oil additive, when applied to such cleaning sheets at such high levels, tends to leave an unappealing residue on surfaces that are wiped with such cleaning sheets which is unacceptable to consumers. [0004] U.S. Pat. No. 5,599,550 issued Feb. 4, 1997 to Kohlruss et al. describes a biodegradable wax-impregnated dust cloth. However, the dust cloth disclosed by Kohlruss utilizes natural fibers and relatively high levels of wax, both of which contribute to eliminating the dust-attracting properties of the cloth. [0005] A variety of tack cloths have been disclosed that comprise pressure sensitive adhesive and/or tackifier materials. See, e.g., U.S. Pat. Nos. 5,198,292; 3,658,578; 3,208,093. However, these tack cloths typically contain relatively high levels of additives and/or undesirable additives for incorporation in cleaning sheets, especially cleaning sheets used to clean household surfaces, wherein consumers find aspects of the cleaning sheet such as hand feel and glide as important to consumer acceptance. [0006] It has thus been a desire of those skilled in the art to develop a cleaning sheet that has an ability to effectively pick up and retain particulate dirt, while maintaining the electrostatic properties and glide of the cleaning sheet, and minimizing the amount of residue left on the surface being wiped with such cleaning sheet. [0007] In addition, while cleaning implements, such as floor mops, which utilize removable cleaning sheets are known, there is a need to provide cleaning implements which better utilize the cleaning sheet by maximizing the surface of the sheet which collects and/or traps particulate dirt. Still further, there is a need for cleaning implements which can effectively cooperate with cleaning sheets which pick up and retain particulate dirt, maintain the electrostatic properties and glide of the cleaning sheet, and minimize the amount of residue left on the surface being wiped. SUMMARY OF THE INVENTION [0008] The present invention relates to cleaning sheets for removing and retaining particulate material such as dust, lint, hair, sand, food crumbs, grass and the like from surfaces, while minimizing the amount of residue left on the surface after being wiped with the cleaning sheet. The present cleaning sheets comprise an additive, whereby the type and level of additive is selected such that the ability of the cleaning sheet to pick-up and retain particulate material is improved, while the residue left on the surface is minimized. The additives contained on cleaning sheets can leave varying amounts of residue on the surface being cleaned, depending upon the type of additive A number of additive materials can be suitable for incorporation into the cleaning sheets of the present invention. Preferred additives of the present invention that are particularly useful with the present cleaning sheets are polymeric additives, especially those with specific adhesive characteristics such as specific Tack Values, Adhesive Work Values, Cohesion/Adhesion Ratios, Stringiness Values, T.sub.g Values, and/or molecular weight. Other additive materials that are optional in the present invention include, but are not limited to waxes, oils, powders, and mixtures thereof. The additive material is selected in order to improve the pick-up of fine particulate matter such as dust, lint, and hair, and especially larger particulate matter typically found on household floors and surfaces such as crumbs, dirt, sand, hair, crushed food, grass clippings and mulch. In addition, the type and amount of the additive material is carefully selected in order to improve particulate pick-up of the cleaning sheet, while maintaining the ability of the cleaning sheet to easily glide across the surface being cleaned. If the cleaning sheet is too tacky as a result of the additives incorporated therein, the cleaning sheet will not easily glide across the surface, leading to consumer dissatisfaction. [0009] The present invention further relates to mop head for a cleaning implement having a resilient bottom surface, a portion of which preferably has a substantially smooth curved profile or crown which engages the removable cleaning sheet. [0010] The present invention further relates to a floor mop having a mop head dimensioned to receive cleaning sheets which are sized for both hand dusting and dusting with a floor mop. [0011] The present invention further relates to a kit is comprising a mop head, or a cleaning sheet which when used with a mop head, provides a bottom surface having one of the previously described profiles for producing a repeated rocking or pivoting motion of the mop head during use. Still further, the kit preferably includes a coupling, having at least two, and, more preferably, at least three, bores which are angled relative to one another. BRIEF DESCRIPTION OF THE DRAWINGS [0012] While the specification concludes with claims particularly pointing out and distinctly claiming the invention, it is believed that the present invention will be better understood from the following description taken in conjunction with the accompanying drawings in which: [0013] FIG. 1 is a perspective view of a floor mop suitable for use with the present invention; [0014] FIG. 2 is a perspective view of a floor mop suitable for use with the present invention, wherein a cleaning sheet is shown disposed about the mop head; [0015] FIG. 3 is a cross sectional side view of the floor mop of FIG. 1, taken along line 3-3 thereof, wherein the upper portion of the universal joint and the entire handle have been omitted for clarity; [0016] FIG. 4 is an enlarged cross-sectional side view of the elastic pad of the floor mop of FIG. 3; [0017] FIG. 5 is an enlarged partial cross-sectional side view of a preferred elastic pad made in accordance with the present invention, wherein the contact surface is a tangency point; [0018] FIG. 6 is an enlarged partial cross-sectional side view of another preferred elastic pad made in accordance with the present invention, wherein the contact surface is substantially straight; [0019] FIG. 7 is an enlarged partial cross-sectional side view of the elastic pad of FIG. 5, wherein a cleaning sheet is disposed adjacent the pad; Continue reading about Cleaning sheets comprising a polymeric additive to improve particulate pick-up and minimize residue left on surfaces and cleaning implements for use with cleaning sheets... Full patent description for Cleaning sheets comprising a polymeric additive to improve particulate pick-up and minimize residue left on surfaces and cleaning implements for use with cleaning sheets Brief Patent Description - Full Patent Description - Patent Application Claims Click on the above for other options relating to this Cleaning sheets comprising a polymeric additive to improve particulate pick-up and minimize residue left on surfaces and cleaning implements for use with cleaning sheets patent application. ###  How KEYWORD MONITOR works... a FREE service from FreshPatents1. Sign up (takes 30 seconds). 2. Fill in the keywords to be monitored. 3. Each week you receive an email with patent applications related to your keywords. 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