A cleaning sheet and dusting wipe

Abstract

The utility model belongs to the technical field of cleaning tools, specifically relates to a cleaning piece and dust removing swab, the cleaning piece provided by the utility model includes at least two layers of superimposed sheet material layers and dust removing fiber layers arranged on at least one side of the sheet material layers, the sheet material layers and the dust removing fiber layers form a width change profile that increases from the rear end to the front end along the length direction to satisfy a moving window criterion. The ratio of the moving average width D1 corresponding to the effective moving window of the front end of the cleaning piece to the last end D2 is preferably in the range of 1.2-2.5. The dust removing swab includes an operating handle and the cleaning piece, and a pair of insertion bars of the operating handle is inserted into the retaining channel of the cleaning piece. The cleaning piece provided by the utility model can effectively reduce the redundant fibers at the rear end and improve the adsorption efficiency at the rear end, while strengthening the cleaning capacity at the front end, so as to realize the overall improvement of the adsorption efficiency in the full length range while maintaining or reducing the amount of materials. In addition, the natural direction recognition feature makes it unnecessary to additionally process an indication structure, and facilitates the user to conveniently assemble.

Description

Technical Field

[0001] This utility model belongs to the field of cleaning tools technology, specifically relating to a cleaning sheet and a duster. Background Technology

[0002] As a convenient and efficient dry cleaning tool, the duster has advantages such as requiring no additional water source, simple operation, and minimal dust generation during cleaning. It has been widely used in daily household cleaning, office maintenance, and cleaning operations in commercial spaces such as hotels and shopping malls. Whether removing surface dust from desktops, windowsills, or furniture, or adsorbing hair from floors or sofa crevices, the duster can quickly complete the cleaning task and has become an indispensable basic tool in modern cleaning systems. Its market penetration and user acceptance continue to rise.

[0003] From a product attribute perspective, dusters, especially combination products with detachable cleaning pads, are typical consumables. Their core cleaning component, the cleaning pad, gradually loses its cleaning ability as it absorbs dust, hair, or other debris. Due to the saturation limitations of materials like polyester or viscose fibers, cleaning pads cannot be restored to their initial cleaning effect through repeated washing, thus requiring regular replacement to maintain cleaning quality. This characteristic means users continuously bear replacement costs, making cost a key consideration for both consumers and manufacturers in product development. Ordinary consumers typically prefer products with lower unit prices and reasonable replacement cycles, while manufacturers must balance cost-effectiveness by controlling the amount of non-woven fabric or fiber bundles used as base materials and simplifying production processes while ensuring basic cleaning performance.

[0004] Simply increasing the overall fiber content or widening the cleaning pad to improve cleaning efficiency might enhance cleaning performance, but it directly increases raw material costs, contradicting the product's fundamentally cost-sensitive nature. Conversely, reducing fiber content to control costs significantly weakens cleaning performance, failing to meet users' actual needs. Therefore, finding a way to further improve overall dust removal efficiency while maintaining or even reducing material usage is both challenging and practically significant. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a cleaning sheet and a duster. The purpose of this utility model is to solve the problem that existing dusters, given their cost-sensitive product attributes, struggle to effectively improve overall dust removal efficiency while maintaining or reducing material usage.

[0006] The first aspect of this utility model provides a cleaning sheet, comprising at least two stacked sheet layers and a dust-removing fiber layer disposed on at least one side of the sheet layers. The sheet layers and the dust-removing fiber layer together form a width variation profile that increases from the rear end to the front end along the length direction of the cleaning sheet. The width variation profile satisfies the following: there exists a moving window with a length L ∈ 1cm-3cm, such that when the moving window moves from the rear end to the front end of the cleaning sheet, among any two effective moving windows with a distance exceeding L, the average moving width corresponding to the front end window is greater than the average moving width corresponding to the rear end window. The moving window is a rectangular area extending along the length of the cleaning sheet, and the average moving width is the average width of the cleaning sheet within the moving window; the effective moving window is a moving window that simultaneously satisfies both boundary validity and content validity.

[0007] As a further optimization scheme, the moving average width corresponding to the effective moving window at the foremost end of the cleaning sheet is denoted as D1, and the moving average width corresponding to the effective moving window at the rearmost end of the cleaning sheet is denoted as D2, with D1 / D2 ranging from 1.2 to 2.5.

[0008] As a further optimization scheme, D1 / D2 is in the range of 1.5 to 2.0.

[0009] As a further optimization, the sheet layer and the dust removal fiber layer are fixedly connected by a pressing process, and the collection of pressing areas constitutes a pressing pattern; at least a portion of the pressing pattern will be separated into at least one retaining channel extending along the length of the cleaning sheet by the gap between adjacent sheet layers.

[0010] As a further optimization, the pressing pattern includes a central pressing line running through the length of the cleaning sheet, and two sets of pressing point arrays distributed on both sides of the central pressing line; two retaining channels extending along the length of the cleaning sheet are formed in the gap between adjacent sheet layers and between the central pressing line and the pressing point arrays on both sides.

[0011] As a further optimization scheme, the boundary validity of the moving window is defined as follows: the entire length range covered by the current moving window is within the length range defined between the front and rear boundaries of the pressing pattern; the content validity of the moving window is defined as follows: the edge contour line of the dust removal fiber layer coverage area is macroscopically continuous and complete within the entire length range covered by the current moving window.

[0012] As a further optimization scheme, the width variation contour changes linearly.

[0013] As a further optimization, the edges of the sheet layer are formed with slits, and the extension direction of the slits is consistent with the width direction of the cleaning sheet.

[0014] As a further optimization, the dust removal fibers at the front end of the cleaning sheet are distributed in a fan-shaped pattern.

[0015] The second aspect of this utility model is to provide a duster, including an operating handle and a cleaning plate. The operating handle includes a grip and at least one insert connected to the front end of the grip. The cleaning plate is any of the cleaning plates mentioned above. The insert is inserted into a retaining channel to assemble the handle and the cleaning plate together.

[0016] As a further optimization of the duster, the insert has an integrally molded anti-detachment protrusion on the side, and the pressing pattern of the cleaning pad includes anti-detachment limiting points. The anti-detachment protrusion and the anti-detachment limiting points form mechanical interference to prevent the insert from falling out.

[0017] As a further optimization of the duster, the pressing pattern includes a first limiting pressing point and a second limiting pressing point, which are used to limit the insertion depth of the insert.

[0018] Beneficial effects This invention reconfigures the spatial distribution of dust-removing fibers, reducing redundant fibers and avoiding fiber waste caused by limitations in grip posture and force angle. This allows the limited fibers to concentrate their action on dirt, significantly improving the adsorption efficiency at the back end while further releasing the cleaning potential at the front end, ultimately achieving an overall improvement in adsorption efficiency across the entire length of the cleaning sheet. Furthermore, the cleaning sheet of this invention provides natural directional identification marks. No additional indicator structure is required when assembling the operating handle; it can be accurately inserted using only the simple illustrations on the product packaging. This saves on additional process costs and reduces assembly errors, achieving convenient, unmarked assembly. Attached Figure Description

[0019] Figure 1 This is a statistical chart showing the dust collection volume and efficiency of sections A and B after 20 users used a conventional cleaning pad to clean the area in Example 1.

[0020] Figure 2 This is a statistical chart showing the number of hairs adsorbed and the adsorption strength of parts A and B after 20 users cleaned their hair with a conventional cleaning sheet duster in Example 2.

[0021] Figure 3 This is a schematic diagram of the overall structure of the duster of this utility model.

[0022] Figure 4 This is a schematic diagram of the operating handle of the duster of this utility model.

[0023] Figure 5 This is a side view of a cleaning sheet according to the present invention.

[0024] Figure 6This is a side view of a cleaning sheet with another structure according to the present invention.

[0025] Figure 7 This is a schematic diagram of the pressed pattern.

[0026] Figure 8 and Figure 9 This is a schematic diagram of the structure of a cleaning tablet with different D1 / D2 ratios.

[0027] Figure 10 This is a schematic diagram showing the insertion of the operating handle and the cleaning pad in action.

[0028] Figure 11 A schematic diagram of a cleaning sheet with shredded edges formed at the edge of a sheet layer.

[0029] Figure 12 This is a schematic diagram of the structure in which the dust removal fibers at the front end of the cleaning sheet are distributed in a fan shape.

[0030] In the diagram, 1 is the sheet layer; 3 is the dust removal fiber layer; 4 is the pressed pattern; 5 is the retaining channel; 6 is the shredded material; 41 is the central pressure line; 42 is the pressure point array; 43 is the first limiting pressure point; 44 is the second limiting pressure point; 45 is the anti-detachment limiting point; 91 is the insert; 93 is the anti-detachment protrusion; and 99 is the handle. Detailed Implementation

[0031] The present invention will be further illustrated by specific embodiments below. These embodiments are exemplary and intended to illustrate the problem and explain the present invention, and are not intended to be limiting.

[0032] First, it should be noted that the duster involved in this utility model comprises a cleaning blade and an operating handle assembled together. To clearly illustrate the structure, after the cleaning blade is assembled to the operating handle, the end closer to the user's hand is defined as the rear end, and the end farther from the user's hand is defined as the front end. The length direction of the cleaning blade is defined as the extension direction from the rear end to the front end, and the width direction is defined as the direction perpendicular to the length direction.

[0033] Example 1 Select a standard-shaped cleaning pad with consistent specifications. The standard-shaped cleaning pad has dust removal fibers evenly distributed along its length, with a consistent fiber density. The extension direction of the dust removal fibers is perpendicular to the length direction of the cleaning pad, and the extension length of each dust removal fiber is equal. This ensures that the width of the cleaning pad is consistent along its overall length, without any situation where it is wider at the front and narrower at the back or vice versa.

[0034] Each standard-shaped cleaning pad was cut along its length in a 50:50 ratio to obtain two independent parts. Then, the two parts were weighed independently using a precision electronic balance, and the net weight of each part before cleaning was recorded. The part that was inserted into the handle and furthest from the handle was designated as part A (corresponding to the recorded data as the front weight of part A), and the part that was closer to the handle was designated as part B (corresponding to the recorded data as the front weight of part B). The weighed parts A and B were then inserted into the handle and fixed in place, assembling a duster for testing.

[0035] The assembled dusters were distributed to 20 users. All users held the handles and carried out cleaning operations in a natural environment according to their usual usage habits. After the cleaning operation was completed, the A and B cleaning pads were removed from the handles, and the two parts were weighed independently again using a precision electronic balance. The total weight of each part after cleaning was recorded, and the corresponding recorded data were the weight of A part and the weight of B part after cleaning.

[0036] Experimental results are as follows Figure 1 As shown, based on the recorded experimental data, the suction volume of section A and section B were calculated using the formula "Dust suction amount = Total weight after cleaning - Net weight before cleaning". Then, the suction efficiency of section A and section B was calculated using the formula "Dust suction efficiency = (Dust suction amount / Net weight before cleaning) × 100%". Statistical analysis of the experimental data from 20 users revealed that the average front weight of section A was 6.12g and the average rear weight was 6.51g, resulting in an average suction volume of 0.37g and an average suction efficiency of 6.05% for section A. Conversely, the average front weight of section B was 5.53g and the average rear weight was 5.62g, resulting in an average suction volume of 0.07g and an average suction efficiency of 1.27% for section B. Furthermore, the individual experimental data from all 20 users consistently showed a trend where the suction volume and suction efficiency of section A were higher than those of section B.

[0037] Analysis of the experimental data shows that when using a conventional duster, the suction efficiency of part A, which is farther from the handle, is significantly higher than that of part B, which is closer to the handle. This indicates that when ordinary people operate the duster according to their usual habits, the dust-collecting fibers at the near end (part B) of the conventional duster do not fully exert their suction power.

[0038] Example 2 Prepare a duster for testing that is consistent with that used in Example 1.

[0039] For each test, 50 hairs, each 3cm long, were evenly spread on a clean surface of one square meter. The assembled duster was then distributed to a user, who held the handle and cleaned the surface with the hair using their usual method until all the hair was adsorbed onto the duster. After cleaning, the number of hairs adsorbed on areas A and B was counted and recorded.

[0040] Repeat the above test steps, with 20 users completing their respective cleaning tests in turn. Statistical analysis was performed on the experimental data from the 20 tests, and the adsorption strength of part A and part B was calculated according to the formula "adsorption strength = (number of hairs adsorbed ÷ 50) × 100%".

[0041] Experimental results are as follows Figure 2 As shown, according to the recorded experimental data, the average number of hairs adsorbed in part A was 37, and the average adsorption strength was 74%; the average number of hairs adsorbed in part B was 12.4, and the average adsorption strength was 24.8%.

[0042] Analysis of the experimental data shows that when using a regular-sized cleaning pad to clean hair, the adsorption strength of part A, which is farther from the handle, is significantly higher than that of part B, which is closer to the handle. This also indicates that when ordinary people operate the duster according to their usual habits, the adsorption efficiency of the dust removal fibers at the near end (part B) is not fully utilized.

[0043] Example 3 A type of duster, such as Figure 3 As shown, it includes the aforementioned cleaning pad and an operating handle. The operating handle is as follows: Figure 4 As shown, it includes a handle 99 and a pair of inserts 91 connected to the front end of the handle 99. The inserts 91 can be inserted into the cleaning plate for connection with the cleaning plate.

[0044] Cleaning tablets such as Figure 5 and Figure 6 As shown, the cleaning sheet includes at least two stacked sheet layers 1 and a dust-removing fiber layer 3 disposed on at least one side of the sheet layer 1. The sheet layer 1 may consist of two or more layers, and the dust-removing fiber layer 3 may be disposed on one or both sides of the cleaning sheet.

[0045] The sheet layer 1 is made of a flexible thin-layer material, such as spunbond nonwoven fabric, SMS composite nonwoven fabric or fiber interwoven sheet with good toughness. Its thickness range is preferably 0.1-0.5mm, which can give the cleaning sheet sufficient basic structural strength while maintaining good flexibility. The dust removal fiber layer 3 is composed of a large number of bundled polyester fibers or viscose fibers. The linear density of a single fiber is preferably 1.5-3.0dtex. The length of the fiber bundle extends along the width direction of the cleaning sheet and is used to directly adsorb dirt such as dust and hair to achieve the cleaning function.

[0046] In the composite process, the multilayer sheet material layer 1 and the dust removal fiber layer 3 are fixedly connected by a pressing process, such as hot pressing or ultrasonic pressing. The multilayer materials can be pressed together in one step or in multiple steps. After pressing, the pressed joints of each layer form a continuous or discontinuous pressing pattern 4.

[0047] At least a portion of the pressed pattern 4 will divide the gap between adjacent sheet layers 1 into at least one retaining channel 5 extending along the length of the cleaning sheet. In some embodiments, with Figure 7 , Figure 8 and Figure 9 As shown in the example, the pressing pattern 4 includes a central pressing line 41 extending along the length of the cleaning sheet, and two sets of pressing point arrays 42 symmetrically distributed on both sides of the central pressing line 41. The extension direction of the central pressing line 41 intersects with the extension direction (width direction) of the fiber bundles in the dust removal fiber layer 3. Through pressing, the middle part of the fiber bundles in the dust removal fiber layer 3 is fixed on the central pressing line 41 and spreads outwards along the central pressing line 41, forming a fluffy fiber adsorption area. The pressing point array 42 consists of multiple spaced circular, elliptical, or other roughly dot-shaped pressing points. Through the pressing effect of the pressing point array 42, the partially spread fiber bundles are constrained into several independent fiber bundle units, locally increasing the rigidity of the dust removal fibers. The overall cleaning effect is improved by the cooperation of dust removal fibers with different rigidities.

[0048] After the multiple sheets 1 are stacked, two gaps extending along the length of the cleaning sheet, namely retaining channels 5, will be formed between adjacent sheets 1 in the areas corresponding to the pressure point arrays 42 on both sides of the central pressure line 41. A pair of inserts 91 at the front end of the handle 99 can be inserted into the retaining channels 5 of the cleaning sheet. The two retaining channels 5 extend in the same direction as the length of the cleaning sheet, and the width of the retaining channels 5, i.e., the distance between the pressure point arrays 42 and the central pressure line 41, is adapted to the width of the operating handle inserts 91, allowing the inserts 91 to be stably inserted. The width of the retaining channels 5 remains basically constant from the rear end to the front end of the cleaning sheet.

[0049] The pressing pattern 4 also includes at least one anti-detachment limiting point 45 provided on the central pressing line 41, the anti-detachment limiting point 45 being larger than the central pressing line 41 in the width direction of the cleaning pad. Correspondingly, the side of the insert 91 of the operating handle is integrally formed with an anti-detachment protrusion 93 that mates with the anti-detachment limiting point 45. When the insert 91 is inserted into the retaining channel 5, a gap is formed between the anti-detachment protrusion 93 and the anti-detachment limiting point 45. Figure 10 The mechanical interference shown can effectively prevent the insert 91 from coming off in the opposite direction during cleaning operations (such as waving and wiping), significantly improving the structural stability of the duster.

[0050] In other embodiments, the pressing pattern 4 may also be designed with a pair of pressing lines or pressing dots extending along the length direction, thereby forming a retaining channel 5 between them. Correspondingly, the operating handle includes a grip 99 and an insert 91 connected to the front end of the grip 99. The insert 91 is inserted into the retaining channel 5 located in the center to realize the assembly of the operating handle and the cleaning pad.

[0051] The sheet layer 1 and the dust removal fiber layer 3 together form a width variation profile that is narrow at the rear end and wide at the front end, increasing from the rear end to the front end, along the length of the cleaning sheet.

[0052] It should be noted that although the fiber bundles of the dust removal fiber layer 3 are designed to extend roughly along the width of the cleaning sheet and be generally straight, due to the influence of fiber production processes (such as carding and web laying) and the composite process, as well as the limited constraints on the dust removal fibers, the extension direction of a single fiber inevitably has a certain angular deviation, and slight bending of local fibers is also unavoidable. These factors cause the physical boundary of the cleaning sheet (i.e., the contour formed by the free ends of the fiber bundles) to not form an absolutely regular straight line or curve. Therefore, the increase in the width of the cleaning sheet from the rear end to the front end does not need to be based on a strict absolute boundary, but rather is a general increase, that is, it can present an overall trend of increasing width.

[0053] To more clearly describe the cleaning sheet's shape, where the width roughly increases from the rear to the front, the concept of a moving window is introduced. A moving window is defined as a rectangular area extending along the length of the cleaning sheet, with a length (dimension along the length of the cleaning sheet) of L. Considering that the actual length of the cleaning sheet used is usually greater than 5cm, L is preferably 1cm-3cm, such as 1.0cm, 1.5cm, 2.0cm, or 3.0cm. The width direction of the window is consistent with the width direction of the cleaning sheet. This moving window is continuously moved along the length of the cleaning sheet from the rear to the front. The average width of the cleaning sheet within any moving window can be calculated, and this calculated average width is recorded as the moving average width corresponding to the current moving window. The edge contour line of the union area covered by sheet layer 1 and dust removal fiber layer 3 within the moving window is extracted. This contour line is integrally calculated over the length of the moving window, and the result is divided by the window length. The resulting value is the moving average width corresponding to the current moving window.

[0054] The judgment criteria are as follows: When a moving window moves from the back end to the front end, if any two valid moving windows with a distance greater than L satisfy the condition that the average moving width of the front end window is greater than the average moving width of the back end window, then it conforms to the width change profile of the back end being narrower and the front end being wider, which increases from the back end to the front end.

[0055] The distance between two moving windows is defined as the distance between the centerlines of the two moving windows along the length of the cleaning sheet. The centerline of the moving window is a straight line perpendicular to the length of the cleaning sheet and bisects the length of the moving window itself.

[0056] An effective moving window is defined as a moving window that simultaneously satisfies both boundary validity and content validity. Boundary validity means that the entire length range covered by the moving window lies within the length range defined between the front and rear boundaries of the cleaning sheet pressing pattern 4. This condition ensures that the moving window is located within the effective functional area of ​​the cleaning sheet, eliminating irregular parts that may occur at the front and rear ends of the cleaning sheet due to the increased freedom of the dust removal fibers. Content validity means that within the entire length range covered by the moving window, the edge contour line of the area covered by the dust removal fiber layer 3 is macroscopically continuous and complete, without any boundary interruptions or blank segments caused by missing fibers.

[0057] Based on the experimental conclusions of Examples 1 and 2, it is evident that conventional cleaning pads, due to their uniform overall width, exhibit a significant difference in adsorption efficiency between the front and rear ends in actual use. The numerous dust-removing fibers at the rear fail to fully utilize their function under typical usage scenarios and operating habits, while the front portion has potential for further improvement in adsorption capacity. Therefore, designing the cleaning pad with a narrow rear end, a wide front end, and a width that increases along its length offers a clear advantage in enhancing the overall cleaning performance of the duster.

[0058] For the rear of the cleaning pad, a narrower width reduces the number of redundant dust-collecting fibers in that area, avoiding the waste of excess fibers with low utilization rates common in conventional designs. Because the rear cleaning area is affected by the user's grip posture and force angle during operation, its effective contact frequency and pressure with dirt are lower than at the front. The narrow width design allows the limited fibers in this area to make more concentrated contact with dirt, enabling the fibers to participate more efficiently in vacuuming and adsorption, thereby specifically improving the adsorption efficiency of the rear and addressing its inefficient idle state. For the front of the cleaning pad, a wider width further enhances its adsorption capacity by increasing the spread and fullness of the dust-collecting fibers, expanding the contact area with object surfaces during cleaning, increasing the amount of dust collected and the hair capture rate per unit time, and maximizing the high efficiency of the front.

[0059] In summary, this incremental width design, with a narrower rear end and a wider front end, is the result of spatial redistribution and optimization of the dust removal fibers based on experimental findings and confirmation of differences in actual usage efficiency in different areas of the cleaning sheet. This not only solves the problems of fiber waste and low efficiency in conventional designs but also strengthens the core cleaning capabilities at the front end, ultimately achieving a comprehensive improvement in adsorption efficiency across the entire length of the cleaning sheet, thereby significantly enhancing the overall cleaning performance of the duster.

[0060] In addition to enhancing the overall cleaning performance of the duster, this progressively wider design, narrower at the rear and wider at the front, offers significant advantages in ease of use. The intuitive width difference helps users quickly distinguish between the front and rear of the cleaning pad, allowing for accurate insertion of the handle without the need for additional markings. For example, a simple diagram showing how to insert the handle from the narrower end can be printed on the product packaging, eliminating the need for any additional processing steps on the cleaning pad itself, such as adding indicator arrows or labels, thus balancing convenience and cost-effectiveness.

[0061] If we denote the moving average width of the effective moving window at the very front of the cleaning pad as D1, and the moving average width of the effective moving window at the very back of the cleaning pad as D2, then the ratio of D1 / D2 is preferably in the range of 1.2 to 2.5. A further preferred ratio is 1.5 to 2.0. Cleaning pads with this ratio range exhibit superior cleaning efficiency in typical scenarios such as homes and offices.

[0062] In some other preferred embodiments, the width of the cleaning pad increases linearly from the rear to the front. That is, the average width of the effective moving window is linearly positively correlated with the position of the moving window along the length of the cleaning pad. For every fixed distance the moving window moves forward along the length, its average width increases by a fixed value. This linear width variation allows the user to experience a smooth transition in the width of the cleaning pad during cleaning, resulting in more even force feedback when applying pressure with the hand. It avoids operational stuttering caused by sudden width changes, and in particular, effectively alleviates the stuttering sensation when cleaning narrow crevices using back-and-forth moving motions.

[0063] In some other preferred embodiments, such as Figures 7 to 10 As shown, the pressing pattern 4 also includes a first limiting pressing point 43 and a second limiting pressing point 44. The first limiting pressing point 43 is located at the front end of the retaining channel 5 and in the area between the two retaining channels 5, and is used to form an abutment engagement with the Y-shaped forked portion at the root of the insert 91 of the operating handle. The second limiting pressing point 44 is located at the end of the retaining channel 5 and is used to form an abutment engagement with the front end of the insert 91. By limiting the insertion depth of the operating handle by the first limiting pressing point 43 and the second limiting pressing point 44, it is possible to avoid exceeding the preset position or damaging the cleaning pad.

[0064] In some other preferred embodiments, such as Figure 11 As shown, the edges of the sheet layer 1 are cut to form a large number of shreds 6, and the extension direction of the shreds 6 is consistent with the width direction of the cleaning sheet. These shreds 6 can also participate in the cleaning operation as cleaning units, working together with the dust removal fiber layer 3 to contact and absorb dirt, thereby further supplementing and enhancing the overall cleaning ability of the dust removal duster.

[0065] It should also be noted that the dust-collecting fibers at the front end of the cleaning sheet are longer and have weaker inter-fiber compression, allowing for greater freedom of dispersion. Even if the fibers are pre-arranged along the width of the cleaning sheet during manufacturing, after production or after slight use, the front end can still easily form a fan-shaped dispersion of dust-collecting fibers, such as... Figure 12 As shown, this fan-shaped, dispersed fiber distribution at the head not only enhances fiber fluffiness and adsorption capacity but also covers the surface to be cleaned at a wider contact angle. The dispersed fibers can more flexibly penetrate into small crevices (such as tabletop crevices and sofa edges) and, through the synergistic effect between fibers, wrap around and adsorb irregularly shaped dirt such as curly hair and particulate dust, significantly reducing dirt leakage. Based on this, in some preferred embodiments, the density of the dust-removing fibers at the front of the cleaning pad can be specifically increased to further enhance the dispersion effect and cleaning performance of the head fibers.

[0066] The above embodiments are exemplary and are intended to illustrate the technical concept and features of this utility model, so that those skilled in the art can understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the scope of protection of this utility model.

Claims

1. A cleaning tablet, characterized in that, The cleaning sheet includes at least two stacked sheet layers (1) and a dust-removing fiber layer (3) disposed on at least one side of the sheet layer (1). The sheet layer (1) and the dust-removing fiber layer (3) together form a width variation profile that increases from the rear end to the front end along the length direction of the cleaning sheet. The width variation profile satisfies the following: there exists a moving window with a length L∈1cm-3cm, such that when the moving window moves from the rear end to the front end of the cleaning sheet, in any two effective moving windows with a distance exceeding L, the average moving width corresponding to the front end window is greater than the average moving width corresponding to the rear end window. The moving window is a rectangular area extending along the length of the cleaning sheet, and the average moving width is the average width of the cleaning sheet within the moving window; the effective moving window is a moving window that simultaneously satisfies boundary validity and content validity.

2. The cleaning sheet according to claim 1, characterized in that, The moving average width of the effective moving window at the foremost end of the cleaning sheet is denoted as D1, and the moving average width of the effective moving window at the rear end of the cleaning sheet is denoted as D2. The ratio of D1 to D2 is in the range of 1.2 to 2.

5.

3. The cleaning sheet according to claim 1 or 2, characterized in that, The sheet layer (1) and the dust removal fiber layer (3) are fixedly connected by a pressing process, and the collection of pressing areas constitutes a pressing pattern (4); at least a portion of the pressing pattern (4) will separate the gap between adjacent sheet layers (1) into at least one retaining channel (5) extending along the length of the cleaning sheet.

4. The cleaning sheet according to claim 3, characterized in that, The pressing pattern (4) includes a central pressing line (41) that runs through the length of the cleaning sheet, and two sets of pressing point arrays (42) distributed on both sides of the central pressing line (41); two retaining channels (5) extending along the length of the cleaning sheet are formed in the gap between adjacent sheet layers (1) and between the central pressing line (41) and the pressing point arrays (42) on both sides.

5. The cleaning sheet according to claim 3, characterized in that, The boundary validity of the moving window is defined as follows: the entire length range covered by the current moving window is within the length range defined between the front and rear boundaries of the pressing pattern (4); the content validity of the moving window is defined as follows: the edge contour line of the dust removal fiber layer (3) covered area is macroscopically continuous and complete within the entire length range covered by the current moving window.

6. The cleaning sheet according to claim 3, characterized in that, The width variation contour changes linearly.

7. The cleaning sheet according to claim 3, characterized in that, The edge of the sheet layer (1) is formed with shavings (6), and the extension direction of the shavings (6) is consistent with the width direction of the cleaning sheet.

8. The cleaning sheet according to claim 3, characterized in that, The dust-removing fibers at the front end of the cleaning plate are distributed in a fan shape.

9. A duster, characterized in that, The device includes an operating handle and a cleaning plate. The operating handle includes a grip (99) and at least one insert (91) connected to the front end of the grip (99). The cleaning plate is a cleaning plate according to any one of claims 3-8. The insert (91) is inserted into the retaining channel (5) to assemble the handle and the cleaning plate together.

10. The duster according to claim 9, characterized in that, The insert (91) has an integrally formed anti-detachment protrusion (93) on its side, and the pressing pattern (4) of the cleaning sheet includes a detachment-prevention point (45). The anti-detachment protrusion (93) and the detachment-prevention point (45) form a mechanical interference to prevent the insert (91) from detaching; and / or D1 / D2 is in the range of 1.5 to 2.0.

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