KR20060013669A - Wiping articles having a scouring surface - Google Patents

Abstract

A wiping article (1), for cleaning surfaces, comprises a liquid-absorbent web material and, disposed on a liquid-absorbent surface thereof, abrasive areas (5) comprising at least cured particulate binder material, the abrasive areas being spaced apart by liquid-absorbent areas (4) of the web material. A method for making the wiping article, for cleaning surfaces, the method comprising the steps of : providing a liquid-absorbent web material; providing a dry particulate material that comprises at least particulate curable binder material; depositing spaced areas of the dry particulate material on a liquid-absorbent surface of the web material; and curing the binder material to form spaced abrasive areas on the surface of the web material, the said abrasive areas being spaced apart by liquid-absorbent areas of the web material.

Description

Wiping product with cleaning surface {WIPING ARTICLES HAVING A SCOURING SURFACE}

The present invention relates to a wiping article suitable for use by consumers to clean surfaces in a variety of environments, including home, industrial, hospital and food industry environments. The invention also relates in particular to a wiping product having a scouring surface (also called a scrubbing surface) on at least one side.

Wiping products are already widely used by consumers in the above-mentioned environments for cleaning kitchen and bathroom surfaces, including for example floors. Several different wiping products are currently used for home use, from paper towels to conventional woven cloths and mops, some of which are intended for use in a dry state (eg to wipe off spilled liquids), The other is for use in damp or wet conditions. It is also known to provide a wiping product having a cleaning action suitable for removing hardened dirt or stains from the surface to be cleaned.

Examples of wiping products having a cleaning action are disclosed in US-A-4 142 334 and 5 213 588 and EP-A-0 211 664. Each of these documents discloses a wiping product having on one side a regular pattern of polishing areas formed by a printing process using a dispersion of abrasive particles in a liquid adhesive or binder which is later solidified or induced to solidify. Wiping products are also known, which do not use abrasive particles and have a weak cleaning action. For example, the molten polymer fibers that are subsequently cured can be sprayed onto one side of the wiping substrate to obtain a weak cleaning action. However, in general, providing a spaced abrasive area on the wiping substrate is desirable because it provides a wiping product that can greatly maintain the flexibility of the substrate and is easier to handle and use by the consumer.

Summary of the Invention

The present invention provides a method for producing a wiping product for surface cleaning, the method

(i) providing a liquid absorbent web material;

(ii) providing a dry particulate material comprising at least a particulate curable binder;

(iii) attaching spaced apart dry particulate material regions on the liquid absorbing surface of the web material;

(iv) curing the binder to form abrasive regions spaced apart on the surface of the web material, wherein the abrasive regions are spaced apart by the liquid absorption areas of the web material. The present invention also provides a wiping article for surface cleaning comprising a liquid absorbing web material and a polishing region comprising at least a particulate binder disposed on the liquid absorbing surface and cured, wherein the polishing region is a liquid absorbing region of the web material. Spaced apart by

By way of example only, a wiping product according to the invention and a method of making these products are described below with reference to the accompanying drawings.

1 is a plan view of a wiping product according to the present invention;

2 is a schematic cross-sectional view of the product along line I-I of FIG. 1;

3 is a schematic diagram illustrating a method of making the wiping article of FIGS. 1 and 2;

4 and 5 are plan views of cleaning surfaces of other wiping products according to the invention.

The present invention relates to a wiping product, wherein at least one side has a polishing area for providing a product with a cleaning action, and the other side is used to provide a general wiping action of the product. The present invention includes a polishing region comprising a liquid absorbing web material and at least a particulate binder disposed on the liquid absorbing surface and cured, wherein the polishing regions are spaced apart by the liquid absorbing region of the web material. As used herein, "particulate curable binder" is processed at room temperature as a solid, in particulate form, by heating and subsequent cooling (if thermoplastic), or by exposure to heat or other forms of energy ( Heat-curable or crosslinkable) means a material that can be softened and cured.

The present invention is directed to providing a method of making a wiping product with less environmental impact than currently used methods. The use of the particulate binder in the process according to the invention makes it possible to create a polishing zone on the surface of the web material without generating volatile organic compounds (VOCs), and to obtain a method with less energy requirement than the method using a liquid binder. .

In a further aspect, the present invention relates to the provision of a wiping product in the form having a good appearance in addition to an effective cleaning action. The use of particulate binders allows the binder to adhere onto the web material under the action of electrostatic forces. Thus, it is possible to create a sharply contoured polishing area on the web material in various patterns, thus allowing the consumer to select a desired product.

The wiping article 1 shown in FIGS. 1 and 2 comprises a liquid-absorbing web material 3 and an abrasive zone attached to an upper surface 4 of the web material (as shown in the drawing) and arranged in a regular pattern ( 5) is included. The abrasive zone 5 comprises abrasive particles with a cured particulate binder that adheres the abrasive particles to each other and to the surface of the web material 3. Between the polishing regions 5 the liquid absorbing surface 4 of the web material 3 is exposed. The abrasive zone 5 is shown in rod form in FIG. 1: however, this configuration is not essential and other shapes may be used as disclosed below. It is not necessary to arrange the polishing regions 5 in a regular pattern.

The manufacturing method of the wiping product 1 is illustrated graphically in FIG. 3. The web material 3 of continuous length is fed from the roll 7 via the powder coating booth 9. The web material 3 is conveyed past the powder coating booth 9 on the flat surface provided by the grounded electrically conductive conveyor 11 and the top surface 4 of the web material in the booth 9 is stenciled or masked ( In close contact with 13), the pattern for the polishing area 5 is cut out in a known manner in the stencil or mask. As illustrated in FIG. 3, the stencil is a continuous band that moves past the powder coating booth 9 at the same speed as the web material 3. Dry particulate material (including at least abrasive particles 14 and curable particulate binder 15) is fed from hopper 16 to electrostatic spray gun 17 located on top of the coating booth.

Electrostatic spray guns are known in the powder coating art and are used in electrostatic powder coating systems that apply electrically charged powder coatings to electrically grounded workpieces. Typical existing electrostatic powder coating systems consist of a powder hopper, a high voltage power source (eg, generating up to 100 kV), an electrostatic spray gun and a powder recovery system. The powder is fluidized in a hopper and then fed into a spray gun, facing the workpiece to be coated. The electrode on the front of the spray gun is connected to a power source and provides electrostatic charge to the powder coating to be propelled toward the grounded workpiece. The charge guides the powder particles downward and attaches to the grounded workpiece. Powders not attached to the workpiece are recovered and reused.

In the method illustrated in FIG. 3, the electrostatic spray gun 17 is under the combined effect of electrostatic attraction, gravity and the flow rate of atomizing air from the spray gun 17 and through the stencil 13 and the cutout of the stencil. Dry particulate matter 14, 15 is manipulated downwardly to the upper surface 4 of the web material 3. The stencil 13 is then moved away from the web 3, leaving on the surface of the web a region of particulate matter 14, 15 spaced apart in a pattern defined by the stencil. The particulate material 14, 15 remaining in the stencil 13 can be collected and reused in any suitable manner, such as dropping any particulate material to the bottom of the booth 9.

The web material 3 is then exposed under conditions under which the particulate binder 15 softens and then hardens, such that the abrasive particles 14 are mutually oriented in each of the spaced regions 5 and the surface 4 of the web material 3. ). In the method illustrated in FIG. 3, the particulate binder 15 is a thermoset or thermoplastic material, thus passing the web material 3 through the oven 19 where it is heated to soften the particulate binder: The thermoset binder is an oven 19. ), The thermoplastic binder is taken out of the oven and then cooled to cure. The web material 3 with the abrasive zones 5 spaced apart on the surface is converted into individual wiping products 1 of appropriate size as shown in FIG. 1 (after storing as rolls 21 as necessary). Let's do it.

Using the method illustrated in FIG. 3, the areas of spaced particulate material 14, 15 attached on the web material 3 in the powder coating booth are used to move the web material from the booth 9 to the oven 19. Found not to be disturbed. This is considered to be the result of the particulate matter 14, 15 attached to the web material 3 under the action of electrostatic force. As a result, the spaced apart abrasive zones 5 formed on the web material after passing through the oven are visually clean and contoured and give the user a pleasant appearance.

The abrasive zone 5 does not have to be in the shape shown in FIG. 1. Other suitable forms include points as illustrated in FIG. 4, or include figures as illustrated in FIG. 5. In general, it is possible to create any shape that can be defined by a suitable stencil 13. The arrangement of the abrasive zones 5 may be irregular or limited to only one part of the surface of the wiping article (eg a letter or picture shape at the corner or center of the wiping article). For some wiping products, it may be desirable to form an abrasive zone on the main two sides of the product: this is the other side of the web material 3 facing up, passing the powder coating booth 9 once more, and again the oven By passing through (19), it can be realized by the process as shown in FIG.

In order for the wiping product 1 to have a proper wiping action, to maintain flexibility and to be easily handled by the user, the abrasive zone 5 occupies about 50% or more of the surface of the wipe material 3. It is desirable not to. If the abrasive zone is greater than the amount of the surface of the wipe material, the liquid absorption of the wiping product may be substantially reduced, as with the cleaning performance, because the tendency of the wiping product to slide on the surface being cleaned increases. In general, it has been found that the best results are obtained when the abrasive zone 5 occupies about 15-40% of the surface of the wipe material 3. The size of each abrasive zone 5 depends on the manner in which it is arranged on the surface of the wiping material, but if it is too large, the wiping material may slip on the surface to be cleaned, resulting in less effect. In addition, the arrangement of the abrasive zones 5 on the surface of the wiping material 3 is preferably non-directional so that the user does not have to orient the wiping product 1 correctly before use.

In the special case where there is only a single abrasive zone 5 on the surface of the wiping article, the abrasive zone is no more than about 50% of the wiping surface of the article in such a way that the user can choose to use the cleaning zone or the liquid absorbent zone of the wiping article. It is desirable to occupy.

The powder coating booth 9 can be of any suitable type known for use in the powder coating art. Although the stencil 13 is preferably non-conductive, it is preferred that the stencil 13 be moved in intimate contact with the surface 4 of the web material 3 to define the conditions of the contour of the particulate material region 5 attached on the web material. If so, it may be any suitable material. The stencil 13 can be, for example, a fabric belt (eg silk screen belt) or a polymeric material belt (eg PVC, polyester, polyurethane or polyamide).

Stencil 13 may be in the form of a continuous band, as illustrated in FIG. 3, but is not necessarily so. Alternatively, the method illustrated in FIG. 3 can be carried out as a semi-continuous method, in which each stencil member is placed on a discontinuous length web material prior to entering the powder coating booth 9. As part of the web moves past the coating booth, particulate material 14, 15 attaches from the spray gun 17 onto the stencil. If a portion of the web material comes out of the coating booth 9, the steril may be separated, washed and reused. On the other hand, as described above, the web material is moved to the oven 19 to soften and harden the binder. Although the web material provides the conveyor 11 with a flat, grounded electrically conductive surface that is transported past the coating booth 9, it is not necessary. In a semi-continuous process, for example, the web material may be provided by an electrically conductive plate inserted between the conveyor and the web material of discontinuous length when entering the coating booth 9.

The amount of particulate matter 14, 15 adhered on the web material can be adjusted by varying the speed at which the web material moves past the coating booth 9. It may be adjusted by changing the number of spray guns 17 used in the booth or by changing the spray gun settings. By reducing the amount of particulate matter 14, 15 attached to a low level and at the same time omitting the stencil 13, the particle-size polishing locations spaced at random and spaced by the wicking area of the web material are placed on one side. Occupying wiping products can be produced. Even in this case, the area of the polishing locations should not exceed about 50% of the wiping surface area.

If high quality is not needed for the abrasive zones 5 on the web material 3, a general pattern for the abrasive zones is formed on the surface provided directly below the web material by the electrically conductive conveyor 11 and a stencil ( 13) may be omitted. For example, the conveyor 11 may be in the form of a lattice, in which case particulate material from the spray gun 17 will preferentially collect along the lattice of the conveyor on the surface of the web material 3. However, the outline of the grid lines will not be apparent and some particulate matter will adhere to the web material in the spaces between the lines.

As yet another alternative, if high quality is not needed for the polishing area 5 on the web material 3, the stencil 13 is omitted and the contact with the conveyor 11 in some areas of the web material is different. A web material 3 having a tighter surface structure (eg, crepe material) than in the area can be used to form a polishing pattern of a general pattern. A greater amount of particulate material 14, 15 will be attached over the area of the web material that is in closest contact with the conveyor 11.

Instead of the coating booth 9 with the spray gun 17, other coating apparatus may be used to effect electrostatic attachment of the dry particulate material 14, 15 onto the web material 3. These include, for example, a device capable of venting particulate matter in a fluidization chamber and electrostatically charged by ionized air to attach to the web material. The web material to which the particulate matter is attached can be passed through the oven 19 as described above.

If desired, the dry particulate material 14, 15 supplied from the hopper 16 to the electrostatic spray gun may include additives commonly used in the field of powder coating, such as pigments, fillers, flow aids, and the like. Some of such additives, for example pigments and fillers, may be incorporated into the binder particles.

The nature of the abrasive particles and particulate binder and the web material 3 that can be used in the process of FIG. 3 will be described in detail below.

A) web material

Any web material known to be suitable for use as a retail wiping product may be used as the web material 3, provided that the surface of the material is provided with neither abrasive particles 14 nor particulate binder 15 nor web material 1. It cannot penetrate but must be dense enough to remain on the surface at all times. If the contours of the abrasive zones 5 are to be sharp, the surface of the web material from which these zones are formed must be smooth and flat enough to make intimate contact with the stencil 13 in the powder coating booth 9.

The web material 3 should be chosen to relate to the intended use of the wiping product 1. Known wipe materials generally have a basis weight of 15 to 300 g / m ^2, but higher basis weight materials may be used. Where appropriate, fabrics and knits are also suitable, as are nonwovens including thermal bonds, resin bonds, ultrasonic bonds, needle punching, dry laid, wet laid and spunbond materials that can be hydro-entangled. Wipe materials are often hydrophilic but can be specially formulated to absorb non-aqueous liquids such as fats and oils. These materials are "disposable" (to wipe the use of wipe products formed from the material immediately) and "semi-disposable" (washing the wipe products formed from the material, depending on its durability, so that only a limited number of times Commonly reusable) or " reusable " (to wipe and reuse wipe products formed from the material).

Disposable wipe materials suitable for use as web material (3) have a basis weight of 15 to 75 g / m ² , for example from PET, rayon, viscose, wood pulp, polypropylene, natural fibers, polyamides or mixtures thereof. Formed spunbond and spunlace nonwoven materials. Exemplary disposable wipe materials include DuPont's trade name “Sontara”; And "TenoLace" by Tenotex, Italy d'Isola.

Multi-use wipe materials suitable for use as the web material 3 have a basis weight of 75 to 250 g / m ² and include, for example, spun-lace nonwoven materials formed from fibers, or fibers of polyester, polyamide, viscose, or microfibers. . Examples of such multi-use wipe materials include the trade name “Scotch-Brite ^™ Dusting Cloth” of 3M Company, St. Paul, Minn .; And "Sontara" by DuPont.

Reusable wipe materials suitable for use as web material (3) have a basis weight of 100 to 300 g / m ² , for example knitting, woven, heat formed from PET, rayon, viscose, polypropylene, natural fibers, polyamides or mixtures thereof Bonding, latex coatings and chamois type materials. Such a reusable wipe material is a wipe material available under the trade name "Cif" of Lever Faberge, Switzerland.

B) particulate binder

The particulate binder 15 is solid at room temperature and may be any suitable binder resin processed in particulate form and should be selected taking into account the nature of the web material 3 to be attached and its intended use in household wiping materials. . The binder should be able to be activated without damaging the web material. Depending on the desired use of the wiping product, a cured binder may be needed to withstand laundry and exposure to some cleaning compositions. The particulate binder 15 may also be of a suitable size for use with the electrostatic spray gun 17.

Suitable particulate binders include thermosetting and thermoplastic powders that are activated by heat and powders that are otherwise activated. Thermosetting resins from which the particulate binder can be selected include formaldehyde-containing resins such as phenol formaldehyde, novolac phenolic and especially with the addition of crosslinking agents (eg hexamethylenetetraamine), phenoplas and aminoplasts; Unsaturated polyester resins; Vinyl ester resins; Alkyd resins, allyl resins; Furan resin; Epoxy; Polyurethane; And polyimide. Thermoplastic resins from which the particulate binder can be selected include polyolefin resins such as polyethylene and polypropylene; Polyester and copolyester resins; Vinyl resins such as poly (vinyl chloride) and vinyl chloride-vinyl acetate copolymers; Polyvinyl butyral; Cellulose acetate; Acrylic resins including acrylic and polyacrylic copolymers such as acrylonitrile-styrene copolymers; And polyamides (eg, hexamethylene adipamide, polycarrolactam), and copolyamides. Mixtures of the above thermosetting and thermoplastic resins may also be used.

Binders cured by means other than heating or cooling, such as those cured with ultraviolet light, can also be used.

The particulate binder is preferably epoxy, or polyurethane, or copolyamide particulate resin.

C) abrasive particles

The abrasive particles 14 are any known to be suitable for use in household cleaning products and may take into account the properties of the surface to be cleaned and the desired cleaning action. Examples of suitable abrasive materials include inorganic material particles such as aluminum oxide including ceramic aluminum oxide, heat treated aluminum oxide and white fused aluminum oxide; Particles of silicon carbide, tungsten carbide, alumina zirconia, diamond, ceria, cubic boron nitride, silicon nitride, garnet, and combinations of the foregoing. Abrasive aggregates such as those disclosed in US Pat. Nos. 4,652,275 and 4,799,939 can also be used in the present invention. Suitable abrasive particles include ductile and less aggressive materials, such as thermoset or thermoplastic polymer particles, and ground natural products, such as ground nut shells. Suitable polymeric materials for abrasive particles include polyamides, polyesters, poly (vinyl chloride), poly (methacrylic) acids, polymethylmethacrylates, polycarbonates, polystyrenes, and melamine-formaldehyde condensates. Like the particulate binder 15, the abrasive particles 14 may be of a size suitable for use with the electrostatic spray gun 17.

For wiping articles having a non-scratch cleaning action, the preferred abrasive particles are polyamide or PVC.

The method of making a wiping product according to the invention is described in more detail in the following non-limiting examples. All parts and percentages quoted are parts by weight and percentages unless stated otherwise.

In this example, the following materials, devices, and test methods were used.

material

50% PET-50% Rayon Web Material : Disposable spunlace wipe material of basis weight 50 g / m ² available from Green Bay Nonwoven, Green Bay, Wisconsin.

PE / Viscose / Wood Pulp Web Material : Disposable spunlace wipe material available under the trade name "TenoLace" from Tenotex, Italy Terno d'Isola.

Multi-use microfiber web material : A type of wipe material available under the trade designation "Scotch-Brite ^TM Dusting Cloth" from 3M Company, St. Paul, Minn., USA.

Reusable microfiber web material : Material of the kind for wipes available under the trade designation "Cif" from Swiss Lever Faberg.

Epoxy Resin Powder : "Beckrypox AF" low temperature curable blue thermoset powder (average particle size 35 microns) available from DuPont, Montbrisson, France.

High Density Polyethylene Resin Powders : "NB 6454F" thermoplastic powders (particle size 0-90 microns) available from DuPont Polymer powders of Switzerland

Copolyamide resin powder : "Vestamelt 350P1" thermoplastic powder (particle size 0-80 microns) available from Degussa in German.

Copolyester Resin Powder : "Vestamelt 4680P1" (particle size 0-80 microns) available from Degussa in German.

Polyurethane resin powder : "UNEX 4073" thermoplastic powder (particle size 0-80 microns) available from Dakota Coatings of Nazares, Belgium.

Low Density Polyethylene Resin Powder : "HA 1591" thermoplastic powders (particle size 0-75 microns) available from DuPont Polymer powders of Swiss Bule.

Powder flow aid : "Aerosil 200" available from Degussa in German.

Polyamide Particles : Particle size 0-250 microns (average 105 microns) available from Rhodia, Barcelona, Spain.

Device

Powder coating equipment : A "Versaspray II" electrostatic spray gun, available from Nordson, Westlake, Ohio, was installed in a powder coating booth (also available from Nordson), with a lower electrically grounded 30 cm wide vertical mesh Facing the conveyor belt. Upon entering the booth, an electrically conductive plate was placed on top of a length of conveyor. The gun is equipped with a 2.5 mm flat spray nozzle. A powder coating booth comprising a fluidizing hopper containing powder, the hopper being equipped with a venturi pump to supply powder to the gun; A recovery drum for collecting the discarded powder at the bottom of the booth, and an air conditioning unit that regulates the supply of fluidized air to the hopper and the supply of flow and atomized air to the pump and gun. Hoppers, pumps and recovery drums are all available from Nordson. The powder booth incorporates features (including air extraction through cartridge and HEPA filters, and combustion detectors) to safely handle fine powder.

Stencil : Vinyl stencil with cutout corresponding to the pattern of FIG. The length of the stencil corresponds to the length of the electrically conductive plate provided for the conveyor of the coating booth (see above).

Through-air oven : gas oven (4 meters long) available from Cavitec, Munchville, Switzerland

Test method

Cut test ; This test provided a measurement of the cutout (material separated from the workpiece) by the wiping product under wet conditions. The 10.16 cm diameter annular swatches were cut from the wiping material to be tested and fixed with pressure sensitive adhesive to a backing pad pre-adjusted by immersion in water. The wiping material was prewet. The backup pad was fixed to the drive plate of a Schiefer abrasive tester (available from Frazier Precision Company, Gathersburg, Maryland, USA), standing upright for wet testing. An annular wax workpiece 10.16 cm diameter x 1.27 cm thick was cut from "Protowax" (available from Kinet Collins Co., Cleveland, Ohio). The initial weight of each workpiece was recorded in mg of maximum approximation prior to installation on the workpiece holder of the abrasive tester. The water dropping rate was set at 60 ± 6 droplets per minute. The abrasive tester weight platform was loaded with a 2.00 Kg load and the mounted abrasive specimens were lowered onto the workpiece. The machine was set to run 1000 times and then automatically stopped. Water and debris were wiped off the workpiece and weighed. In each of the 1000 tests, there was a difference between the initial weight of the cutout and the weight after the test.

Example 1

PET rayon wipe material was transferred continuously through the powder coating booth. The stencil is placed in a web of length material just upstream of the coating booth and just below the plate. As the web of that length travels through the coating booth, a mixture of 75% epoxy resin powder and 25% polyamide particles is led to the stencil by a "VersasprayII" spray gun located 30 cm above the mesh conveyor. The powder mixture is fed to the spray gun from a hopper that is fluidized using air at a pressure of 0.5 bar until some foaming occurs. The air pressure setting of the spray gun was 2-3 bar for the flow (or primary air), 1-1.5 bar for the atomizing (or secondary) air, and a maximum voltage (100 kV) was applied. The powder was attached to the stencil at a weight of about 50 g / m ² . The stencil-coated portion of the web was removed from the coating booth, the stencil and plate were removed to leave a pattern of powder deposit on that portion of the web material, then transferred to a gas oven and heated at 170 ° C. for 2 minutes to remove the epoxy resin in the deposit. Fuming and curing formed a pattern of abrasive regions on the surface of the web material. Low speed settings were used to prevent recycled air from removing the resin powder in the gas oven. On the other hand, the stencil was cleaned using an air blower to remove the powder mixture attached on the stencil in the coating booth; The regenerated powder mixture was returned to the hopper of the coating booth and the stencil and plate were reused in another length of web material.

Examples 2-4

Example 1 was repeated using a powder mixture in which the ratio of epoxy resin powder to polyamide particles was 50/50, 95/5 and 100/0 (ie, in Example 4 no polyamide particles were present in the powder mixture). It was.

Examples 5 and 6

Example 1 was repeated except that the amount of powder attached to the stencil in the coating booth was 100 g / m ² and 30 g / m ² , respectively.

Examples 7-9

Example 1 was repeated except that the PET-rayon wipe material was replaced with a PE / Viscose / Wood pulp material, a multi-use microfiber material, and a reusable microfiber material, respectively.

Examples 10 to 14

Epoxy resin powder, respectively HD polyethylene powder; Copolyamide powder; Copolyester powders; Polyurethane powders; And Example 1 was repeated except that LD polyethylene powder was replaced. The flow aid powder was included with the plastic powder in an amount of 0.5% by weight.

result

A cut test was conducted using a sample of the wiping product obtained from Examples 1-13. In addition, the sample obtained in Example 8 was washed five times with a domestic washing machine at 95 ° C. and weighed after each washing.

Since the abrasive particles used are relatively soft, and visual inspection does not scratch the polycarbonate workpiece, the cleaning action of all the samples tested can be classified as non-scratch.

The cut test showed that all samples had a cleaning performance suitable for use as a cleaning wipe by the consumer in home, industrial, hospital and food industry environments. The samples of Examples 11-13 in which soft resins were used showed a softer washing action. Wiping products that exhibit a gentler cleaning action can be used as bathroom products for washing human skin.

The sample of Example 4 shows that a similar washing powder can be obtained using a similar resin powder (possibly preformulated to include filler) without using additional abrasive particles.

The sample of Example 8 was found to be washable at least 5 times at a temperature of 95 ° C.

Visual inspection of all example samples revealed that the polishing patterns on all samples were clear and outlined.

An advantage of the method disclosed in Example 1 above is that it does not produce volatile organic compounds (VOCs) when forming the abrasive zone on the surface of the web material. In addition, the energy required in this process may be less than necessary if liquid resins are used rather than powders. Thus, the environmental impact of this method is substantially smaller than the previous method of manufacturing a wiping product having a cleaning action. In addition, due to the absence of the liquid, it is relatively clean and the handling of necessary materials is easy. In addition, the present examples show that a good wiping product having a sharply contoured polishing pattern can be manufactured in a relatively simple manner.

Claims (25)

(i) providing a liquid absorbent web material; (ii) providing a dry particulate material comprising at least a particulate curable binder; (iii) attaching spaced apart dry particulate material regions on the liquid absorbent surface of the web material; And (iv) curing the binder to form abrasive regions spaced apart on the surface of the web material, wherein the abrasive regions are spaced apart by the liquid absorbent regions of the web material. Method for producing a wiping article (wiping article) for surface cleaning, comprising a. The method of claim 1, wherein the dry particulate material is deposited on the web material to form spaced regions of a preselected shape, the shape being substantially maintained when the binder is cured. The method of claim 2, wherein dry particulate material is deposited on the web material through a screen defining the spaced apart area. The method of claim 3, wherein the screen is in direct contact with the surface of the web material, during which the particulate material is attached thereto. The method of claim 1, wherein the areas of dry particulate material are attached in a regular pattern. The method of claim 1, wherein the area to which the dry particulate material is attached comprises up to 50% of the surface area of the web material. (i) providing a liquid absorbent web material; (ii) providing a dry particulate material comprising at least a particulate curable binder; (iii) depositing dry particulate material on the liquid absorbent surface of the web material to occupy less than 50% of the surface area; And (iv) curing the binder to form spaced abrasive locations on the surface of the web material, wherein the abrasive locations are spaced apart by the liquid absorbing region of the web material. A manufacturing method of a wiping product for cleaning the surface comprising a. 8. The method of any one of the preceding claims, wherein the dry particulate material further comprises abrasive particles. The method of claim 1, wherein the adherent dry particulate material comprises 15-40% of the surface area of the web material. The method of claim 1, wherein the dry particulate material is attached onto the web material under electrostatic action. The method of claim 10, wherein an electrostatic charge is applied to the dry particulate material to direct the web material while the web material is disposed on the electrically grounded support surface. The method according to claim 1, wherein the particulate binder is a thermosetting or thermoplastic resin. The method of claim 8, wherein the abrasive particles comprise a polymeric material or a natural material. The method of claim 8 or 13, wherein the dry particulate material comprises up to 50% by weight abrasive particles. The method of claim 1, wherein the web material is a nonwoven material in the range of 20-300 g / m ² basis weight. A wiping article for surface cleaning comprising a liquid absorbent web material and a polishing position portion comprising at least a cured particulate binder disposed on the liquid absorbing surface, wherein the polishing position portions are spaced apart by the liquid absorbing region of the web material. Wiping products. The wiping article of claim 16, wherein the polishing locations are disposed in a regular pattern across the web material surface. 18. The wiping article according to claim 16 or 17, wherein the polishing position accounts for up to 50% of the web material surface area. 19. The wiping product according to claim 18, wherein the polishing position comprises 15-40% of the web material surface area. A surface cleaning wiping article comprising a liquid absorbent web material and at least one polishing region comprising at least a cured particulate binder disposed on the liquid absorbing surface, wherein the polishing region occupies less than 50% of the web material surface and the remaining surface. The wiping product is silver liquid absorbent. 21. The wiping article according to any one of claims 16 to 20, wherein the polishing location / area further comprises abrasive particles. The wiping article of claim 21, wherein the abrasive particles comprise a polymeric material or a natural material. 23. The wiping article according to claim 21 or 22, wherein the polishing position / area comprises up to 50% by weight abrasive particles. 24. The wiping product according to any one of claims 16 to 23, wherein the binder is a thermosetting or thermoplastic resin. 25. The wiping article according to any one of claims 16 to 24, wherein the web material is a nonwoven material in the range of 20 to 300 g / m ² basis weight.

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