CN108618715A - Cleaning pad with cleansing bar - Google Patents

Abstract

A cleaning pad for absorbing liquids from hard target surfaces. In one embodiment, a cleaning pad includes a pad having a base, and a core attached to the base. The soleplate has a combination of polymeric synthetic fibers and natural cellulose fibers. A cleaning strip is attached to the outwardly facing surface of the base plate. The cleaning pad provides good absorbency and a coefficient of friction falling within a specific range judged to be beneficial for cleaning. The absorption and coefficient of friction work well for amine oxide cleaning solutions.

Description

Cleaning pads with cleaning strips

technical field

The present invention relates to cleaning pads suitable for absorbing liquids from hard surfaces.

Background technique

In the prior art, attempts have been made to provide cleaning pads that absorb liquids (eg, cleaning solutions). May absorb liquid from hard surfaces such as baseboards, tables and countertops.现有技术中的相关尝试包括US 2003/0300991、2004/0074520、2005/0133174、2011/0041274、6003191、6048123、6110848、6245413、6601261、6681434、6701567、6996871、7037569、7096531、7163349、7480956、7458128 , 7624468, 8341797 and 8707505, WO200241746.

However, hydrophobic floors, such as wood floors with an aluminum oxide coating, can be difficult to clean. Dark and glossy floors can also be difficult to clean, especially if the consumer does not use enough cleaning solution. If the consumer uses too much cleaning solution, not all of it can be absorbed and retained by the sheet during cleaning. Inadequate cleaning of debris stuck to the floor may be caused by too low a coefficient of friction between the cleaning pad and the floor. If the coefficient of friction is too low, the cleaning pad may slide over debris that sticks to the floor. Conversely, if the coefficient of friction is too high, cleaning may be difficult to accomplish manually.

To overcome the problem of having too low a coefficient of friction and not picking up dirt, some commercially available cleaning pads have added scrubbing strips. Scrub bars can be textured, as shown in commonly assigned patents 9,204,775, D673,745, and D692,631 for use in WetJet ^TM Extra Power Pad Cleaning Pad.

However, such scrubbing strips create another problem. These scrubbing strips may cause scratches or cloudy marks on dark or hydrophobic floors. So, trying to solve one problem creates another, especially if all floor soils are treated the same way.

Accordingly, the present invention seeks to solve the problem of not having enough friction to remove debris from the floor while preventing scratches or cloudy marks on the floor.

Contents of the invention

In one embodiment, a cleaning pad includes a pad having a base and a core engaged with the base. The base plate also has an inwardly facing surface and an opposite outwardly facing surface. The soleplate has a combination of polymer synthetic fibers and natural cellulose fibers. The outward facing surface has a surface texture of less than 0.5 mm. Engage the cleaning strip with the outward facing surface of the base plate.

Description of drawings

Figure 1A is a top perspective view, shown in partial cross-section, of an exemplary cleaning pad according to the present invention.

Figure 1B is a bottom plan view of the cleaning pad of Figure 1A, shown in partial cross-section, with one attachment strip cut away for clarity.

FIG. 2 is a schematic vertical cross-sectional view along line 2-2 of FIG. 1B.

Fig. 3 is a perspective view of a cleaning implement in which the cleaning pad of the present invention may be used, showing the cleaning pad in place and removably attached to the cleaning implement.

Detailed ways

Referring to Figures 1A, 1B and 2, the cleaning pad (10) of the present invention may comprise multiple layers to absorb and store cleaning fluids and other liquids deposited onto the target surface. Herein, the target surface will be described as a floor, but those skilled in the art will recognize that the invention is not limited thereto. The target surface may be any hard surface, such as a table or countertop, from which it is desired to absorb and retain liquids such as spills, cleaning solutions, and the like.

The cleaning pad (10) may include a liquid permeable soleplate (14) which contacts the floor during the cleaning process and preferably provides the desired coefficient of friction during the cleaning process. An absorbent core (16), preferably comprising absorbent gelling material (16A) (AGM), is disposed on, and optionally linked with, the inwardly facing surface of the chassis (14). A cleaning strip (12) may be disposed on the outwardly facing surface of the base plate (14). Optionally, a backing plate (18) may engage the core (16), opposite the bottom plate (14), providing attachment of the cleaning pad (10) to the tool (30). The back plate (18) may have an outwardly facing surface with one or more attachment strips (20) to particularly facilitate attachment to the tool (30). The cleaning pad (10) may be substantially flat and defines an XY plane and associated X, Y axes. The Z axis is perpendicular to it, and is approximately vertical when the cleaning pad (10) is used on the floor.

The core (16) may include AGM (16A) to increase the absorbent capacity of the cleaning pad (10), if desired. The AGM (16A) may be in the form of particles that may be distributed in the cleaning pad (10) in a manner that avoids fast absorbency and absorbs fluid slowly to provide the most efficient use of the cleaning pad (10). The AGM (16A) also traps dirty liquids absorbed from the floor, preventing redeposition. Absorbent or fibrous material may be incorporated in the core (16) if desired.

Examining the cleaning pad (10) in more detail, the cleaning pad (10) may comprise multiple layers arranged in a laminate. The lowermost or downwardly facing outer layer may include apertures to allow liquid penetration therethrough and to facilitate scrubbing of the target surface. One, two or more core (16) layers may be provided for storing liquid and may include absorbent gelling material. The cleaning pad (10) may have an absorbent capacity of at least 10, 15, or 20 grams of cleaning solution per gram of dry cleaning pad (10), as described in commonly assigned US Patents 6,003,191 and 6,601,261.

The optional top or upward facing layer is the backsheet (18) and it may be liquid impermeable so that absorbed fluid loss is minimized and if the cleaning pad (30) is used without an implement (30) ), protect the hands of the user. A top layer may also be provided such that the cleaning pad (10) is detachably attached to the cleaning implement (30). The top layer can be made of a polyolefin film, such as LDPE. A suitable backsheet (18) comprises a PE/PP film with a basis weight of 10-30 gsm.

Attached to the back panel (18) may be one or more optional attachment strips (20). The attachment strip (20) may contain adhesive, preferably a pressure sensitive adhesive, or may be a loop for detachable attachment to a complementary hook on the tool (30). A suitable loop attachment strip (20) may comprise a laminate of PE film and nylon loops.

The back plate (18) and the bottom plate (14) may be joined at the perimeter, as is known in the art. This arrangement creates a pocket for securely holding the core (16). The core (16) may be juxtaposed with or optionally joined to the respective inwardly facing surfaces of the base plate (14) and back plate (18).

The core (16) may comprise a single layer or two or more layers. If multiple layers are selected for the core (16), the layer width can be smaller as it gets closer to the bottom plate (14), as shown in the figure. The core (16) may comprise airlaid cellulose and optionally polymeric fibers, such as those available from Glatfelter of York, PA. If two airlaid cellulose core (16) layers are selected, each layer of core (16) may have a basis weight of at least about 75, 100, 125, 150, 175, 200, or 225 gsm and less than about 300 gsm.

Preferably, each layer of core (16) comprises AGM (16A). AGM (16A) can absorb at least 10, 15 or 20 times its own weight. The AGM (16A) can be blown into the airlaid core (16) layer during the manufacturing process, as is known in the art. Suitable AGMs (16A) include Z3070G available from Evonik of Essen, Germany. Airlaid materials containing a stepped AGM (16A) distribution are commercially available from Garfitt Corporation of York, PA.

Gradient profiled AGM (16A) can be achieved by using more than one forming head. For example, an airfelt/AGM (16A) line may have 3 forming heads. The first head can dispense a relatively large amount of AGM (16A) relative to the cellulose dispensed from that head. The second forming head can dispense a smaller amount of AGM (16A) relative to the cellulose substrate, placing this mixture on top of the first AGM (16A)/cellulose substrate. This pattern can be repeated with as many forming heads as desired. The final forming head can dispense pure cellulose, without AGM (16A), if required. Generally, the layers from each forming head are not intermingled with adjacent layers. Adhesive bonding and/or thermal bonding can hold the superimposed layers in place and provide structural rigidity.

Suitable core (16) layers and suitable apparatus and methods for manufacturing one or more layers of core (16) with a gradient AGM (16A) profile are described in US 8603622 published 10 December 2013. Incorporating the teachings of 8603622 herein, citing its teachings at column 5, lines 8-14, on suitable core (16) layers and Figures 5-6, at column 16, line 14 to column 17, lines 49 The relevant discussion of the teachings of the production apparatus applies to the production of the core (16) layer for use in the present invention.

If two airlaid cellulose core (16) layers are chosen, the lower core layer (16L) juxtaposed to the base plate (14) may contain about 10-20 wt% AGM (16A), about 15% being suitable. If the optional backsheet (18) is present, the upper core layer (16U) juxtaposed therewith may contain about 20-30 wt% AGM (16A), with about 25% being suitable. Considering all layers, the total core (16) may contain 5-50 wt% or 10-45 wt% AGM (16A), the amount and gradient distribution of AGM (16A) being useful for the present invention. As described and claimed herein, the percentage of AGM (16A) refers to the percentage by weight of AGM (16A) in that particular core (16) layer (16U or 16L), regardless of the base plate (14) , back plate (18), cleaning strip (12) or attachment strip (20).

Each core layer (16L, 16U), in particular the upper core layer (16U), may be further stratified to provide better absorbency benefits. When the upper core layer ( 16U) is formed, the upper core layer ( 16U) may have three layers of lamination. Layering can be monotonically increasing at 0, 25 and 50% by weight as one approaches the backing plate (18) (if present) to provide a gradient profile.

In general, it is desirable for the upper core layer (16U) to include more AGM (16A) than the lower core layer (16L), both in absolute terms and in weight percent. This arrangement provides the benefit that the blocked gel in the lower core layer (16L) does not prevent complete absorption of liquid from the target surface and this liquid is transported up and away from the soleplate (14).

Any arrangement that provides more AGM (16A), preferably in absolute terms, or optionally in weight percent, is suitable. Alternatively, the core (16) layer or a single core (16) layer may have an increasing concentration of AGM (16A) in the Z-direction.

Any such process known in the art that provides an increase in AGM (16A) in the Z direction as it approaches the backplate (18) is considered an AGM (16A) gradient herein. It is to be appreciated that the AGM (16A) gradient may be smooth, include one or more stepwise increments, or any combination thereof.

The chassis (14) may comprise a combination of spunbond (SB) fibers and natural cellulose fibers. Natural cellulose fibers are preferred over man-made fibers. SB fibers and cellulose fibers can be combined by hydroentangling. The soleplate (14) may have a basis weight of 20-70 gsm, preferably 30-50 gsm.

The soleplate (14) may have a surface texture of less than 0.5mm, 0.4mm or less than 0.3mm and even substantially 0mm. The coefficient of friction of the bottom plate (14) using the ammonia oxide solution may be 0.2-0.5 as described below, more specifically, 0.3-0.4. This combination of properties is believed to result in effective cleaning while minimizing scratching and clouding.

However, the inventors have also discovered that the orientation of the natural cellulose/spunbond material used for the backplane (14) contributes to the friction between the cleaning pad and the floor.

More specifically, the chassis (14) may comprise a laminate having a thin layer of cellulosic fibers and a thin layer of synthetic fibers (specifically, spunbond fibers, more specifically polyester spunbond fibers). It is believed that this laminate is helpful in achieving the performance of the cleaning pad (10) described herein. The thin layer of cellulose fibers may be facing outwards to provide friction and absorbency on the floor. A layer of synthetic fibers may be provided in contacting relationship with the core (16) to provide integrity during use. In addition, it is believed that bringing the cellulose fibers of the soleplate (14) into contact with the floor during the sweeping movement provides an electrical charge to the floor, which is useful for retaining hair and similar charged soils during cleaning.

In order to provide adequate cleaning of dirt on the floor without undue friction, the coefficient of friction of the cleaning pad (10) according to the invention using ammonia oxide may be at least 0.2 or 0.3 and less than 0.5 or 0.4. It is believed that this coefficient of friction is achieved by the combination of the soleplate (14) and cleaning strip (12) described herein.

A 23 gsm tissue and a 17 gsm polypropylene spunbond spunlace material, 40 gsm Genesis tissue sold by Suominen of Helsinki, Finland, were found to be suitable backsheets (14). Another suitable backsheet (14) may comprise a 28 gsm tissue and a 17 gsm polypropylene spunbond spunlace material, 45 gsm Hydratexture tissue sold by Suminfen.

The soleplate (14) may also include a cleaning strip (12). The width of the cleaning strip (12) can be smaller than that of the base plate (14), and can occupy at least about 10, 20, 30, 40, 50, 60, or 70% of the width of the base plate (14), so that part of the base plate (14) ) exposed to the floor. The cleaning strip (12) may have a width of at least 10, 20, 30, 40 or 50 mm and less than 70, 80, 100, 200 or 300 mm, with a width of 24-44 mm being suitable and a width of 34 mm being preferred. The cleaning strip (12) may comprise a single thin layer.

The cleaning strip (12) can be either hydrophilic or hydrophobic. As used herein, hydrophilicity refers to a contact angle of 0-100 degrees. Specifically, the cleaning strip (12) may have a contact angle of 30-100 degrees, more specifically, 55-90 degrees. The cleansing bar (12) may comprise a cellulose content of at least 50%, thereby being hydrophilic. The contact angle of the hydrophobic cleaning strip (12) is 100-170 degrees.

One option is to provide the cleaning strip (12) with a surface texture of less than 0.5mm, 0.4mm or less than 0.3mm, even substantially 0mm, which eliminates any cleaning liquid residue. It is believed that a surface texture of less than 0.5 mm minimizes scratches during cleaning, especially when the floor is dry, and more particularly when dark colored floors are dry.

Preferably, the cleaning pad (10) according to the invention has a cleaning strip (12) for scrubbing and removing particles from the floor. Such cleaning strips (12) may have a surface texture of 1-6mm, 1-4mm, 1-3mm, and more specifically 2-3mm, with a surface texture of about 2.5mm being suitable. The peak-to-valley distance was measured as surface texture, independent of the thickness of the cleaning bar (12), as described below. In general, the surface texture of the cleaning strip (12) may advantageously be larger than the surface texture of the chassis (14). Texture can be imparted by intermeshing forming rolls as shown in commonly assigned 5,916,661 and 6,383,431 using a zero strain laminate as described in commonly assigned 5,143,679.

The cleaning strip (12) material may have an MD elongation at break of 80-150%, 100-130%, or 110-120%. The cleaning bar (12) may have a basis weight of 40-60 gsm. The denier of the cleaning strip (12) material may be 1.5-4, specifically about 2.2. A suitable material for the preferred cleaning strip (12) is polyester spunbond material available from Berry Plastics of Evansville, Indiana.

Suitable cleaning strips (12) may comprise, consist of, or consist essentially of non-woven synthetic materials such as polypropylene, polyethylene, LDPE, polyester, polyamide, and PET. A preferred cleaning bar (12) comprises spunbond polyester (SBPE), available under the trade designation Berry Plastics of Evansville, Indiana. 2214.

Without being bound by theory, it is believed that the advantageous combination of a base plate (14) comprising a laminate of natural cellulose and synthetic nonwoven fibers and a nonwoven cleaning strip (12) having the surface texture described above provides sufficient friction and scrubbing power for a particularly effective cleaning experience. Cleaning is believed to be particularly effective if the laminate of natural cellulose and synthetic nonwoven fibers used for the chassis (14) has the natural cellulose fibers facing outward. It is also believed that cleaning is particularly effective if the cleaning strip (12) has a surface texture of at least 0.8mm and/or comprises polyester.

The cleaning strip (12) can be of a contrasting color to the base plate (14), if desired. This arrangement provides a beneficial signal to the consumer that the cleaning strip (12) and the chassis (14) have different functions.

Surface texture measurement

While the cleaning strip (12) is still attached to the rest of the cleaning pad (10), measurements are made on the outwardly facing textured surface of the cleaning strip (12). A sharp blade is used to cut the cleaning pad (10) parallel to the width of the cleaning pad (10), in a cutting manner that does not damage the texture of the bottom plate (14) or the cleaning strip (12). The sample is viewed from the edge, allowing measurements to be taken in the cross-section of the cutting plane.

The surface texture geometry of the cleaning strip (12) was determined to the nearest 0.01 mm by measuring the linear distance along an axis perpendicular to the floor facing flat surface of the cleaning strip (12). The distance to be measured is perpendicular to the plane of the cleaning strip (12), the vertical span between the bottom of a valley and the top of an adjacent peak, where both endpoints are located on the floor-facing surface of the cleaning strip (12). Use the point-to-point measurement function or equivalent to measure distance.

The procedure was repeated for each of the five different cleaning pads (10) for a total of n=1 measurements. The five results were averaged to determine the surface texture of the cleaning bar (12).

A suitable digital microscope for the measurements was a Nikon SMZ1500 with a Nikon TV lens C-0.6x with an Infinity 2 camera from Lumenera, Ottawa, Canada. Suitable measurement software includes INFINITY ANALYZE, version 5.0.3 from Lumenera Corporation.

Coefficient of friction measurement

A material's coefficient of friction is the frictional resistance divided by the normal or perpendicular force pushing the material against the surface. Coefficient of Friction Test Method Dynamic coefficient of friction was measured using a friction/peel tensile tester, Model Insight 10, from MTS System Corporation of Eden Prairie, MN.

A 225g sled is provided measuring 6.5cm x 11.0cm x 1.5cm and has hook fasteners on the bottom surface. A first sample of the cleaning pad (10) was attached to the slide structure using hooks. If the cleaning pad is larger than the skateboard structure, the cleaning pad (10) is centered and trimmed to fit the fit so that no folding occurs at the edges of the cleaning pad (10) during testing. If using a smaller cleaning pad (10), place the cleaning pad (10) on the center of the slide structure. The pressure of the slide structure is about 3.15 g/cm ² . This pressure simulates the normal pressure that a lightweight mop would apply to the cleaning pad (10) when the user is cleaning the floor.

The test solution contained: 0.5% by weight ethanol and 0.04% by weight hydroxide, CAS number 70592-80-2., dissolved in the balance in deionized water. The nominal balance is 99.46% by weight deionized water.

The test surface was an engineered hardwood plank that was smooth to the touch, specifically, Home Legend Santos Engineered Hardwood, UPC 664646301473, 10cm wide x 28cm long. The sled structure and test surfaces were cleaned using the 80/20 IPA/water solution described above. The instrument settings are as follows:

1. Set the "Skateboard Structure Weight" to 225g.

2. Set the "Data Acquisition Frequency" to 20Hz.

3. Set the "start point" to 10mm.

4. Set the "end point" to 130mm.

5. Set the "Expansion Limit Height" to 135mm.

6. Set the "crosshead" speed to 1000mm/min.

7. Test by "returning" the load cell to the starting point.

8. There are 3 options:

oDry cof: Test on dry sample, proceed to next step.

o 1.0 mL cof test: To test with solution in front of the sample, add 1.0 mL of cleaning solution to the engineered wood board 1 cm in front of the sample using a volumetric pipette. The solution should be applied to an area approximately 50 mm wide (width defined as the dimension perpendicular to the direction of travel of the sled structure) and 20 mm long (length defined as the dimension parallel to the direction of motion of the sled structure).

o 25 mL cof test: Test saturated cleaning pad (10) sample: Apply 25 mL of cleaning solution to the bottom plate (14) of the cleaning pad (10). The rate of application of the solution should allow the solution to be absorbed into the cleaning pad (10) without splashing out. The cleaning pad (10) was then placed on a level surface with the bottom plate (14) facing up for 5 minutes before the test began.

9. Place the first sample and sled structure on top of the engineered wood board approximately 5mm from the back edge of the test surface so that the sled structure is aligned in the center of the path, where the hooks on the sled structure align with the load cell's Eyelets aligned.

10. Attach the sled structure to the load cell by threading the wire through the pulley and to the clamp on the test apparatus. A clamp on the closure line keeps it in place.

11. Start the test by pressing the "Start" button. The load cell begins to move from back to front, pulling the slide structure and test sample.

12. When the test is completed, the load cell is stopped and the program will display the measurement of the static friction coefficient (ST) and the dynamic friction coefficient (KI). Record the dynamic coefficient of friction. Activate the "Back" button so that the slide structure and sample return to the starting position.

13. Repeat the process for n=4 samples and average the results.

Example

Cleaning pad (10) of the present invention is compared with commercially available WetJet ^TM Extra Power cleaning pads and WetJet ^™ cleaning pads were tested, both of which are marketed by the assignee of the present application. WetJet ^TM Extra Power Cleaning Pads use SB polyester cleaning strips (12). The test solution contained amine oxide and ethanol, as described herein.

The WetJet ^™ Extra Power Cleaning Pad (Comparison 1 ) employed a 60 gsm PE/PP discretely perforated spunbond nonwoven commercially available as SofSpan from Fitsea, Inc. Cleaning strips (12) of 46 gsm spunbond polyester commercially available from Reemay, Berry Plastics.

WetJet ^™ cleaning pads (comparison 2) used the same base as above (14) and 23 gsm tissue (tissue) and 17 gsm polypropylene hydroentangled SB, sold as 40 gsm Genesis tissue by Suominen, Helsinki, Finland, as cleaning strips (12 ).

The present invention employs 23 gsm tissue and 17 gsm polypropylene hydroentangled material sold as 40 gsm Genesis tissue by Suominen, Helsinki, Finland as the base sheet (14), and with WetJet ^™ Extra Power Cleaning Pad (Control 1 ) Same cleaning strip (12).

Each of the tests below used a common core (16) and backing plate (18). The specific core (16) structure has a compound gradient distribution of AGM (16A) within the core. The upper core layer (16U) has 25 wt% AGM. The lower core layer (16L) had 15% AGM by weight.

The coefficient of friction was tested using dry, slightly wet and more wet test conditions. The results show that the cleaning pad (10) of the present invention has a 25ml coefficient of friction of 0.2-0.5, more specifically and preferably 0.3-0.4. These results are shown in Table 1, each test as a population of n = 4 samples.

Table 1

As shown in Table 1, the control and inventive cleaning pads (10) had substantially the same dry coefficient of friction. Additionally, the amine oxide solution applied at 2 different dosage levels had minimal effect on the control cleaning pad. But for the inventive cleaning pad (10), the same dosage advantageously increased the 25ml wet rub of the inventive pad from 0.14-0.15 to 0.32-0.34.

The cleaning performance of the inventive cleaning pad (10) was also tested relative to 2 control cleaning pads (10). An n=1 population of each sample cleaning pad (10) was tested on a hardwood floor with 0.06 gsm and rated for scratches, clouding, change (gloss improvement) and amount of fluid absorbed from the test floor. The results are shown in Table 2.

Table 2

Table 2 shows that the invention provides improvements in scratches and clouding as reflected in gloss improvements relative to the 2 controls.

The improvement over the control was unexpected since the same material was used for the cleaning strip (12) of Control 1 and the soleplate (14) of the present invention. Also, the same material was used as the cleansing bar (12) of the invention and Control 2. Therefore, it cannot be predicted that the present invention will outperform Control 1 and Control 2 in scratches and cloudiness.

Tools(30)

The cleaning pad (10) of the present invention can be used by hand or with a cleaning implement (30). Referring to Figure 3, the cleaning implement (30) may include a plastic head (32) for holding the cleaning pad (10) and an elongated handle (34) clearly connected thereto. The handle (34) may comprise a metal or plastic tube or a solid rod. For ergonomics, a grip (34G) may be located at the end of the handle (34). The effective length (34S) of the shank (34) can be adjusted as required.

The head (32) may have a downward facing surface to which the cleaning pad (10) may be attached. The downward facing surface may be generally flat, or slightly convex. The head (32) may also have an upward facing surface. The upwardly facing surface may have a universal joint to facilitate attachment of the elongated handle (34) to the head (32).

A hook and loop system can be used to attach the cleaning pad (10) directly to the bottom of the head. Alternatively, the upward facing surface may also include means, such as resilient clips, to detachably attach the cleaning pad (10) to the tool (30). If the jig is used for the cleaning tool (30), the jig may be manufactured in accordance with commonly assigned US Patent Nos. 6,305,046, 6,484,346, 6,651,290 and/or D487,173.

The cleaning tool (30) may also include a reservoir for storing a cleaning solution. The reservoir can be replaced when the cleaning solution is depleted and/or refilled as needed. The reservoir may be placed on the head (32) or handle (34) of the cleaning implement (30). The neck of the reservoir can be branched according to commonly assigned US Patent 6,390,335. The cleaning solutions contained therein may be prepared according to the techniques of commonly assigned US Patent 6,814,088.

The cleaning tool (30) may also include a pump for dispensing the cleaning solution from the reservoir to a target surface, such as a floor. Pumps can be battery powered or operated by line voltage. Alternatively, the cleaning solution may be dispensed by gravity flow. The cleaning solution may be sprayed through one or more nozzles in an efficient pattern to provide distribution of the cleaning solution over the target surface.

If a replaceable reservoir is used, it can be inverted to provide gravity flow of cleaning solution. Alternatively, the cleaning solution can be pumped to a dispensing nozzle. The reservoir may be a bottle, and may be made of plastic, such as polyolefin. The cleaning tool (30) may have a sleeve (36) that removably receives a bottle, or other reservoir. The cleaning tool (30) may have a needle, optionally placed within a sleeve (36) to receive cleaning solution from a bottle. The bottle may have a pierceable membrane complementary to the needle, and it may be resealable to prevent undesired dripping of cleaning solution during insertion and removal of the replaceable reservoir. Alternatively or additionally, implement (30) may also provide steam to be delivered to cleaning pad (10) and/or the floor or other target surface, if desired.

Suitable reservoirs of cleaning solutions and devices therefor can be made in accordance with the teachings of commonly assigned US Patent Nos. 6,386,392, 7,172,099, D388,705, D484,804, D485,178. Cleaning implements that may be manufactured in accordance with the teachings of commonly assigned U.S. Patent Nos. 5,888,006, 5,960,508, 5,988,920, 6,045,622, 6,101,661, 6,142,750, 6,579,023, 6,601,261, 6,722,806, 6,766,552, D477,701 and/or D487,17. A steam tool (30) may be manufactured in accordance with the teachings of jointly assigned 2013/0319463.

A. A cleaning pad (10) comprising:

an absorbent core (16) comprising natural cellulose material,

A liquid-permeable backsheet (14) attached to said absorbent core (16), said backsheet (14) comprising a laminate of spunbond fibers and natural cellulose fibers, said backsheet (14) having a ) of the inwardly facing surface and the outwardly facing surface opposite thereto, and

A cleaning strip (12) attached to said outwardly facing surface of said base plate (14), said cleaning strip (12) comprising a polyester material and having a surface texture of 1-3mm.

B. The cleaning pad (10) of paragraph A, wherein the chassis (14) is hydroentangled and further comprises a backsheet (18) attached to the core (16) such that The core (16) is interposed between the back plate (18) and the bottom plate (14).

C. The cleaning pad (10) of paragraphs A and B, wherein the cleaning strip (12) has a surface texture of 2-3 mm.

D. The cleaning pad (10) of paragraphs A, B and C, further comprising 5-50% by weight absorbent gelling material (16A) in the core (16).

E. The cleaning pad (10) of paragraphs A, B, C and D, further comprising a backing sheet (18) attached to the core (16) such that the core (16 ) placed between said back plate (18) and said bottom plate (14),

said base plate (14) has a surface texture of less than 0.5 mm, and

The cleaning strip (12) has a width of 30-70 mm and comprises spunbond polyester.

F. The cleaning pad (10) of paragraphs A, B, C, D, and E, further comprising a backing sheet (18) attached to the core (16) such that the core (16) placed between said back plate (18) and said bottom plate (14),

The bottom plate (14) has a surface texture of less than 0.3mm.

G. The cleaning pad (10) of paragraphs A, B, C, D, E, F, and G, further comprising a backing sheet (18) attached to the core (16), The core (16) is thus interposed between the back plate (18) and the bottom plate (14),

The core (16) also comprises absorbent gelling material (16A) therein and has a gradient distribution of absorbent gelling material (16A) with a lower percentage of absorbent gelling material (16A) closer to the chassis (14) ,

said chassis (14) comprises a laminate of spunbond fibers and natural cellulose fibers, said natural cellulose fibers facing outward away from said cleaning pad (10) and said spunbond fibers facing said core (16), and

The cleaning strip (12) comprises a non-woven fabric, the cleaning strip (12) having a width of 20-80 mm.

H. A cleaning pad (10) comprising:

back plate (18),

A liquid-permeable backsheet (14) attached to said absorbent core (16), said backsheet (14) comprising spunbonded polyester fibers and natural cellulose fibers, said backsheet (14) having a the inward facing surface of and the outward facing surface opposite it,

an absorbent core (16) disposed between said chassis (14) and said backsheet (18), said absorbent core (16) comprising absorbent gelling material (16A) therein,

as well as

A spunbond nonwoven cleaning strip (12) attached to said outwardly facing surface of said base plate (14), said spunbond nonwoven cleaning strip (12) having a surface texture of 1-3 mm.

I. The cleaning pad (10) of paragraph H, wherein the cleaning strip (12) comprises a hydrophobic polyester nonwoven.

J. The cleaning pad (10) of paragraphs H and I having an amine oxide 25ml coefficient of friction of 0.2-0.5.

K. The cleaning pad (10) of paragraphs H, I and J having an amine oxide 25ml coefficient of friction of 0.3-0.4.

L. The cleaning pad (10) of paragraphs H, I, J and K having an amine oxide 25ml coefficient of friction of 0.2-0.5 and comprising 5-50% by weight absorbent glue in the core (16) gelling material (16A) and having a gradient distribution of absorbent gelling material (16A) with a lower percentage of absorbent gelling material (16A) closer to said base plate (14).

M. The cleaning pad (10) of paragraphs H, I, J, K and L having an amine oxide 25ml coefficient of friction of 0.3-0.4 and comprising 5-50% by weight absorbent in the core (16) absorbent gelling material (16A) and having a gradient distribution of absorbent gelling material (16A), the percentage of absorbent gelling material (16A) being lower closer to said base plate (14), said cleaning strip (12) comprising polyester.

N. The cleaning pad (10) of paragraphs H, I, J, K, L and M having an amine oxide 25ml coefficient of friction of 0.2-0.5 and comprising 5-50% by weight in the core (16) absorbent gelling material (16A), and has a gradient distribution of absorbent gelling material (16A), the percentage of absorbent gelling material (16A) is lower closer to the base plate (14), and the cleaning strip (12 ) comprising polyester, said backsheet (18) being liquid impermeable.

O. A cleaning pad (10) comprising:

back plate (18),

A liquid-permeable backsheet (14) attached to said absorbent core (16), said backsheet (14) comprising spunbond fibers and natural cellulose fibers, said backsheet (14) having an orientation facing said core (16) the inner surface and the outward facing surface opposite it,

An absorbent core (16) disposed between said backsheet (14) and said backsheet (18), said absorbent core (16) comprising 5-50% by weight absorbent gelled in said core (16) Material (16A),

as well as

a non-woven cleaning strip (12) attached to said outwardly facing surface of said base plate (14), said non-woven cleaning strip (12) having a surface texture of 1-3mm,

The cleaning pad (10) has an amine oxide 25ml coefficient of friction of 0.2-0.5.

P. The cleaning pad (10) of paragraph O, wherein the chassis (14) has a surface texture of less than 0.3 mm.

Q. The cleaning pad (10) of paragraphs O and P, wherein the chassis (14) has a surface texture of less than 0.3 mm, the chassis (14) comprising a laminate of spunbond fibers and natural cellulose fibers, The natural cellulose fibers face outward away from the cleaning pad (10) and the spunbond fibers face the core (16).

R. The cleaning pad (10) of paragraphs O, P, and Q, wherein the chassis (14) has a surface texture of about 0 mm, the chassis (14) comprising a laminate of spunbond fibers and natural cellulose fibers , the natural cellulose fibers facing outward away from the cleaning pad (10) and the spunbond fibers facing the core (16).

S. The cleaning pad (10) of paragraphs O, P, Q, and R, wherein the soleplate (14) has a surface texture of less than 0.3mm and the cleaning pad (10) has a 25ml coefficient of friction of 0.3-0.4 .

T. The cleaning pad (10) of paragraphs O, P, Q, R, and S, wherein the chassis (14) has a surface texture of less than 0.3 mm, the chassis (14) comprising spunbond fibers and natural fibers A laminate of vegan fibers, the natural cellulose fibers facing outwards away from the cleaning pad (10) and the spunbond fibers facing the core (16), and the cleaning pad (10) has 25ml of 0.3-0.4 coefficient of friction.

Dimensions and values stated herein are not to be understood as being strictly limited to the precise numerical values recited. Instead, unless specifically stated otherwise, each such dimension is intended to mean the recited value and a functionally equivalent range around that value. For example, a dimension disclosed as "40 mm" is used to mean "about 40 mm," whether or not the term "about" is present. Each range disclosed herein includes all endpoints of that range whether disclosed within that range or as part of the associated range. Thus, two endpoints of the same range may be disclosed as endpoints of a wider or narrower range. The commonly used mathematical symbols > and < represent greater than or equal to and less than or equal to, respectively, and include the endpoints shown in the following equations and inequalities.

Unless expressly excluded or otherwise limited, every document cited herein, including any cross-referenced and related patents or applications, is hereby incorporated by reference. The citation of any document is not to be considered as prior art with respect to any invention disclosed or claimed herein, either alone or in any combination with any other reference, or to refer to, propose, suggest or disclose any such Recognition of Class Inventions. Furthermore, to the extent that any meaning or definition of a term herein conflicts with any meaning or definition of the term in a document incorporated by reference, the meaning or definition assigned to that term herein shall govern.

While particular embodiments of the present invention have been illustrated and described, it would be obvious to those skilled in the art that various other changes and modifications can be made without departing from the spirit and scope of the invention. It is therefore intended to cover in the appended claims all such changes and modifications that are within the scope of this invention.

Claims (20)

1. a kind of cleaning pad comprising：

Include the absorbent cores of natural cellulosic materials,

The fluid permeable bottom plate of the absorbent cores is connected, the bottom plate includes the stacking of spun-bonded fibre and native cellulose fibre Body, the bottom plate have surface inwardly and the outwardly-facing surface opposite with its towards the core, and

It is connected to the cleansing bar on the outward-facing surface of the bottom plate, the cleansing bar includes polyester material and has 1- The surface texture of 3mm.

2. cleaning pad as described in claim 1, wherein the bottom plate is through spun lacing and further includes backboard, the backboard is connected to The core, to which the core is placed between the backboard and the bottom plate.

3. cleaning pad as described in claim 1, wherein the cleaning pad has the surface texture of 2-3mm.

4. cleaning pad as described in claim 1 also includes the absorbent cementitious material of 5-50 weight % in the core.

5. cleaning pad as described in claim 1 further includes backboard, the backboard is connected to the core, to which the core is placed in Between the backboard and the bottom plate,

The bottom plate has the surface texture less than 0.5mm, and

The cleansing bar has the width of 30-70mm and includes spunbond polyester.

6. cleaning pad as described in claim 1 further includes backboard, the backboard is connected to the core, to which the core is placed in Between the backboard and the bottom plate,

The bottom plate has the surface texture less than 0.3mm.

7. cleaning pad as described in claim 1 further includes backboard, the backboard is connected to the core, to which the core is placed in Between the backboard and the bottom plate,

The core also includes absorbent cementitious material wherein and the gradient with absorbent cementitious material is distributed, absorbent gelling Material percentage is lower closer to the bottom plate,

The bottom plate includes the laminated body of spun-bonded fibre and native cellulose fibre, and the native cellulose fibre is away from described clear Clean pad faces out and the spun-bonded fibre is towards the core, and

Cleansing bar includes non-woven fabrics, and the cleansing bar has the width of 20-80mm.

8. a kind of cleaning pad comprising：

Backboard,

It is connected to the fluid permeable bottom plate of the absorbent cores, the bottom plate includes that spunbond polyester fiber and native cellulose are fine Dimension, the bottom plate have surface inwardly and the outwardly-facing surface opposite with its towards the core,

The absorbent cores being placed between the bottom plate and the backboard, the absorbent cores include absorbent cementitious material wherein,

And

It is connected to the spun-bonded non-woven fabrics cleansing bar of the outwardly-facing surface of the bottom plate, the spun-bonded non-woven fabrics cleansing bar has The surface texture of 1-3mm.

9. cleaning pad as claimed in claim 8, wherein the cleansing bar includes hydrophobic polyester non-woven fabrics.

10. cleaning pad as claimed in claim 8, the amine oxide 25ml friction coefficient with 0.2-0.5.

11. cleaning pad as claimed in claim 8, the amine oxide 25ml friction coefficient with 0.3-0.4.

12. cleaning pad as claimed in claim 8 has the amine oxide 25ml friction coefficient of 0.2-0.5 and in the core In include the absorbent cementitious material of 5-50 weight %, and the gradient with absorbent cementitious material is distributed, absorbent gelling Material percentage is lower closer to the bottom plate.

13. cleaning pad as claimed in claim 8 has the amine oxide 25ml friction coefficient of 0.3-0.4 and in the core In include the absorbent cementitious material of 5-50 weight %, and the gradient with absorbent cementitious material is distributed, absorbent gelling Material percentage is lower closer to the bottom plate, and the cleansing bar includes polyester.

14. cleaning pad as claimed in claim 8 has the amine oxide 25ml friction coefficient of 0.2-0.5 and in the core In include the absorbent cementitious material of 5-50 weight %, and the gradient with absorbent cementitious material is distributed, absorbent gelling Material percentage is lower closer to the bottom plate, and the cleansing bar includes polyester, and the backboard is that liquid is impermeable.

15. a kind of cleaning pad comprising：

Backboard,

It is connected to the fluid permeable bottom plate of the absorbent cores, the bottom plate includes spun-bonded fibre and native cellulose fibre, institute Stating bottom plate has surface inwardly and the outwardly-facing surface opposite with its towards the core, is placed in the bottom plate and the backboard Between absorbent cores, the absorbent cores in the core include 5-50 weight % absorbent cementitious materials,

And

It is connected to the non-woven fabrics cleansing bar of the outwardly-facing surface of the bottom plate, the non-woven fabrics cleansing bar has 1-3mm's Surface texture,

The cleaning pad has the amine oxide 25ml friction coefficient of 0.2-0.5.

16. cleaning pad as claimed in claim 15, wherein the bottom plate has the surface texture less than 0.3mm.

17. cleaning pad as claimed in claim 15, wherein the bottom plate has the surface texture less than 0.3mm, the bottom plate Laminated body including spun-bonded fibre and native cellulose fibre, the native cellulose fibre face out simultaneously away from the cleaning pad And the spun-bonded fibre is towards the core.

18. cleaning pad as claimed in claim 15, wherein surface texture of the bottom plate with about 0mm, the bottom plate include The laminated body of spun-bonded fibre and native cellulose fibre, the native cellulose fibre is faced out away from the cleaning pad and institute Spun-bonded fibre is stated towards the core.

19. cleaning pad as claimed in claim 15, wherein the bottom plate has the surface texture less than 0.3mm, and it is described Cleaning pad has the 25ml friction coefficient of 0.3-0.4.

20. cleaning pad as claimed in claim 15, wherein the bottom plate has the surface texture less than 0.3mm, the bottom plate Laminated body including spun-bonded fibre and native cellulose fibre, the native cellulose fibre face out simultaneously away from the cleaning pad And the spun-bonded fibre is towards the core, and the cleaning pad has the 25ml friction coefficient of 0.3-0.4.