JPS60245700A - Product for wiping - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of the Invention] The present invention relates to a weibinda article suitable for use in cleaning soiled surfaces in the presence of water. The wiper article is particularly suitable for cleaning hard surfaces such as those found in domestic kitchens and bathrooms, or for washing the surfaces of a person's body, especially when taking a shower.

[Prior art and its problems]

When cleaning hard surfaces in the kitchen or bathroom, such as floors, sinks, bathtubs or work surfaces used for cooking, for hygienic reasons it is not recommended to use wiping articles, such as non-woven or aluminum kitchen rolls. It is convenient to suck up scattered water droplets or clean surface dirt.

Wiping articles of this type can be used dry when used to remove spills of aqueous or fatty liquids, or wet when the surface to be cleaned is relatively dry. It can also be used in a closed state.

Whether used in the wet or dry state, wiping articles of this type generally work more effectively in the presence of detergent-active compounds that are separately applied to the wiping article or surface during use.

To9itsu Publication No. 2625176 (Shitsukedantsu)
proposes to provide a cleaning cloth for hard surfaces.

The cleaning fabric is made from a nonwoven fabric containing a meltable supply of active detergent, and the detergent is applied from the molten state onto the surface of the nonwoven fabric. A water-insoluble hydrophobic plastic can be applied to the fabric to separate it into an area with a detergent coating and an untreated area without detergent.

However, this type of cleaning cloth has the disadvantage that when used in the presence of water to clean hard surfaces, the impregnated active detergent is leached out and washed away, leaving an article free of soap or detergent after a single use. has. Furthermore, cleaning cloths of this type can also disintegrate, especially if low-moisture strength papers are used in their manufacture.

Furthermore, when taking a shower, it is common to spray water over the entire surface of the body, including the hair. Traditionally, soap bars or semi-liquid shower gel preparations containing liquid detergent are used to promote cleaning by forming foam on the skin surface. Additionally, it is common to use liquid or semi-liquid shampoos to wash hair when taking a shower. Therefore, when taking a shower, it is customary to use at least one, and often two, products to wash the surface of the body, none of which are very convenient to use, and the soap bar can easily slip from the fingers or cause shower gel or shampoo bottles or other containers to be turned over or dropped, representing an inconvenience and a clear waste of product.

It would therefore be advantageous to provide a means to avoid these drawbacks and make showering more convenient.

It has been proposed to impregnate fibrous tissues or cloth with detergent compositions for use in manual dishwashing or for bathing babies.

However, in both cases, only a relatively small amount of water is involved, so even if a large amount of running water is used, such as when taking a shower, the amount of detergent retained on the tissue or cloth may be insufficient. Become.

Furthermore, European Patent Application No. 0068516 (Barbie and Heraken) describes cellulose, plastic,
It has also been proposed to provide a disposable cleaning cloth made from fabric or paper, which is composed of sodium lauryl ether sulfate (10%) and N-β-hydroxyethyl-
O containing a cleaning composition based on the sodium salt of N-β-carboxyethyl fatty acid amidoethylamine (5%) and coconut fatty acid jetanolamide 9 (2%). and Gamble Co., Ltd. has also proposed a dry product for cleaning the skin, and this product has a composition consisting of Stone 1m and stearyl ammonium laurate (stearic acid skin conditioning agent). Consists of absorbent paper or woven or non-woven fabric impregnated with material.

However, when these prior art articles are used to wash body surfaces during a shower, the soap or detergent impregnated with them is prematurely leached out or washed away, resulting in the soap or detergent being washed away before the cleaning is complete. This has the disadvantage that missing items remain. Additionally, articles of this type have a tendency to disintegrate during use, especially if low wet strength papers are used in their manufacture.

Accordingly, previous proposals describing detergent-impregnated wiping cloths for use in cleaning hard surfaces of the kind found in kitchens and bathrooms, or for cleaning body surfaces when taking a shower, do not allow detergents to rapidly dissolve during use. It is clear from the above that as a result of leaching, wiping cloths of this type have the common problem of having a relatively short service life and in any case not being able to be reused.

For example, to overcome the problems described above, an improved detergent-impregnated wiping article has now been developed for use in cleaning soiled surfaces, particularly in the presence of water. The article is capable of controlled release of the active detergent, allowing the active detergent to be used over extended periods of time or many times before being discarded. During use, the release of the active detergent is controlled by a moisture barrier applied to at least a portion of the surface of the article. Additionally, the article has a wet strength such that it is resistant to disintegration when used under normal use conditions in cleaning soiled surfaces. After use, this article can be easily rinsed with water to remove dirt if necessary, and then used again.

[Key points of the invention]

Accordingly, the present invention provides a substantially dry-feel wiping article suitable for use in cleaning soiled surfaces in the presence of water, the article comprising a sheet impregnated with a detergent-active compound. comprising an absorbent substrate having a water absorption capacity of at least 197 g in the form of
Moisture bariki is 1@ to cover %. And, on the other hand.

The moisture barrier on one side and the moisture barrier on the other side are characterized in that they coincide to form a sandwich that encapsulates at least 10% of the area of the absorbent substrate impregnated with the detergent active compound.

Absorbent Substrate The absorbent substrate which acts as a carrier for the impregnated detergent active compound preferably has a thickness of 100 to 1000 microns and rapidly absorbs water when used to clean soiled surfaces. This is a nonwoven sheet made of cellulose fibers that is particularly suitable for its ability to

The absorbent substrate of the article can also be other fibrous materials such as polyamides, polyesters, and polypropylenes or mixtures of these fibers that are particularly useful in providing additional wet strength to the article.

Furthermore, suitable binders such as styrene-butadiene latex, or acrylic binders (such as PRIMAL HA8), or polyvinyl acetate, or self-crosslinked vinyl acetate/ethylene copolymer emulsions (such as VINAMUL), may also be used.
) R32300 and R32337) and self-crosslinking vinyl acetate/acrylic copolymer emulsions (e.g., VINACRYL 43 t:5) can also be incorporated to increase the wet strength of the absorbent substrate.

Primal polymer emulsions are manufactured by Rohm Ant 9 Haas, and Vinamul and Vinamul/71 Part Polymer emulsions are manufactured by Vinyl Products (Primal, Vinamul and Vinacrylic are registered trademarks).

The absorbent substrate can be made from paper, in which case it is generally comprised of cellulose fibers of relatively short length, and additives such as hydroxyethylcellulose are used to provide added wet strength.

The absorbent substrate should have a water absorption capacity of at least 1 g/I, preferably at least 3 g/I. That is, it should be able to absorb an amount of water at least equal to its own weight, preferably at least three times its own weight.

If the substrate includes a binder or additional fibrous material to increase its inherent wet strength, this may reduce the water absorption capacity of the substrate compared to a substrate without binder. Therefore, the type of binder or additional fibers present in the substrate for the purpose of increasing the wet strength and the binder or additional The amount of fiber is important to choose.

The water absorption capacity of a substrate can be determined by simply weighing a piece of dry substrate,
The weight can be determined by simply immersing it in water again, removing excess water, and weighing it.

The quotient obtained by dividing the difference between these two balance values by the dry weight is El
Water absorption capacity expressed as /g.

Preferably, the absorbent substrate should have a minimum wet tensile strength of at least 50 Newtons per meter (87 m2). The minimum wet tensile strength of the matrix is 50 N/
m, preferably at least 8 ON/m,
Particular preference is given to at least 95 N/m. There is no clear upper limit for the wet tensile strength of the matrix, but it will not exceed 1000 N/m and generally will not exceed 500 N/m.

The wet tensile strength is determined by the Yorotsuno ZΦ Disposable Ant 9 Non-Woven Skewer Association (EDAN).
A) It can be measured by the method recommended by DIN 53857.

In this method, a substrate width of 50 mm and a substrate length of 150 m are used as standards. A jaw (jaW) separation speed of 150 mm per minute was used in the test, and the wet tensile strength of a given test substrate was measured in Newtons per meter (87
m).

The wet tensile strength of machine-mounted absorbent substrates made as a continuous web and conveniently stored as rolls is generally greater in the direction of the web, or "machine direction," than in the direction perpendicular to the web, or "cross direction." It should be explained that it is large. Therefore, the above minimum wet tensile strength applies in the direction exhibiting the lower or minimum wet tensile strength, ie generally the "transverse direction."

A suitable absorbent substrate is a nonwoven fabric made of cellulose fibers, an example of which is MITSUBISHI TCF
408, which is a 100% copper ammonia rayon spun-bonded nonwoven fabric having the following technical details: Nominal basis weight C
11/m2) 82.5 μm) 500 Dry tensile strength: Machine direction (N/″rrI) 635 Dry tensile strength: Transverse direction (87 m) 565 Wet tensile strength: Machine direction 498 Wet tensile strength: Transverse Direction (87 m) 447 Absorbent Capacity Cg/11)' 5 Another suitable absorbent nonwoven substrate consisting of cellulose fibers is AIRTEX SC150, obtained from James Reno Z-Φ Corporation and It is a resin-bound cellulose pulp with technical specifications: Nominal basis weight Cg/m) 8.6 Thickness μm) 850 Dry tensile strength: Longitudinal direction (N/m) 450 Dry tensile strength: Transverse direction (87 m) 347 Wet tensile strength: Longitudinal direction (N7m) 323 Wet tensile strength: Transverse direction (N7m) 297 Absorption capacity (L) 11 Resin binder (%) 25 The resin that binds Airtex SC150 is self-crosslinking ethylene/ It is a vinyl acetate copolymer emulsion.

Other examples of absorbent substrates include Strakospar, available from Luk (Sweden), and Stralene (5TOR).
ALENE) 715: 50 or Stralene 7
It is a non-woven fabric made of cellulose fibers such as 17:50, which contains the following components: contains an acrylic binder,
Stralene 717:50 contains a polyvinyl acetate binder.

Strallen 715:50 and Strallen 717:50
The technical details related to Stralen 715:50 717:50 Nominal basis weight Cg/m) 50 50 Thickness μm) 400 365 Transverse direction (N/m) Z bυ ′J+1) Absorption capacity Cg/g) 4 4 Other suitable Stralene wet-laid (1aid) nonwovens are 715-80, 741-50 and HMS 04-75.
includes.

Other examples of absorbent substrates used to make articles of the invention are DEXTER 5343;
This is a wet-laid nonwoven fabric made of short cellulose fibers.

The related technical details of Dekumeta 5343 grade are shown below: Dekumeta 5343 grade Nominal basis weight <g/g) 50 Thickness μm) 190 Wet tensile strength: Longitudinal direction (N7m) 375 Wet tensile strength: Transverse direction ( N7m) 150 Absorbent capacity axillary <9/i), 4 Other examples of absorbent substrates that can be used to make articles of the invention are TAMPELLA K 28615
0, which is produced by Tanhau Oy (Finland).
This is a piled-up nonwoven fabric made of vine short cellulose fibers obtained from.

The relevant technical details of Tan Huni K 286/50 are shown below: Tan Huni 286150 Nominal basis weight Cg/rrl) 50 Dry tensile strength: Longitudinal direction (N7m) 913 Dry tensile strength: Transverse direction (N/rrl) rn) 680 Transverse direction (N/m) 320 Elongation rate: Machine direction (%) 11.2 Elongation rate: Transverse direction (%) 11.5 Dry tear strength: Machine direction (N) 4.4 Dry tear strength : Cross direction (N) 4.4 Other suitable Tambella wet-laid nonwovens include 353-50 and 353-75.

Mitsubishi, Airtex, Strallene, Dexter and Tampera nonwovens are suitable absorbent substrates, but there are many other similar fabrics that can be used as absorbent substrates in the present invention, such as
In particular, Kimba IJ--Kimtex (K) from Clark
rMrvx) and CHICOPEK9
There are 302.

Detergent Active Compounds Detergent active compounds are released in a controlled manner in the presence of water when a wiping article is required to clean soiled surfaces as will become apparent from the description herein below. The absorbent substrate is impregnated with a detergent active compound.

Suitable detergent-active compounds can be selected from anionic, nonionic, amphoteric, zwitterionic and cationic detergents or compatible mixtures of two or more of these types of detergents.

Examples of anionic detergents are alkylbanzene sulfonates,
For example, sodium alkylbenzenesulfonates and sodium alkylnaphthalenesulfonates; alkylsulfates, especially those with 12 to 18 carbon atoms in the molecule, such as lauryl & [sodium and triethanolamine sulfates; alkylbenzene polyoxyethylene sulfonic acids Salts, especially those in which the alkyl group has 8 to 12 carbon atoms; sulfated monoglycerides, such as lauryl monoglyceride sodium sulfate, lauryl monoglyceride ammonium sulfate and sulfated coco monoglyceride 9 ammonium salt; alcohol ether sulfates; sarcosines, such as lauroyl sarcosine and Cocoyl sarcosine; as well as sulfosuccinates, such as the dioctyl esters of salts of sulfosuccinic acid.

Examples of cationic detergents include distearyldimethylammonium chloride,9 dilauryldimethylammonium chloride,9 diisobutylphenoxyethoxyethyldimethylvanzylammonium chloride,9 cetyltrimethylammonium bromide, N-cetylpyridinium bromide, and vanzethonium chloride. include.

Examples of amphoteric detergents are N-alkyl-β-iminodipropionates, N-alkyl-β-aminopropionates and, for example, hydroxylethylcarboxymethylalkylimigzolinium oxide 9 (Milanol).
Basic quaternary ammonium compounds derived from 2-alkyl-substituted imidacillines such as (MIRANOL), especially lauryl, myristyl or stearyl derivatives.

Examples of nonionic detergents include condensates of ethylene oxide and hydrophobic bases, such as condensates of propylene oxide and propylene glycol (PLURON).
IC8), nonyl-phenoxy poly(ethyleneoxy)
Condensation with ethanol (Ignoglu) (IGEPAL)
) and polyoxyethylene (20) condensation with sorbitan monooleate (TWEEN) (TWEEN)
Generated by

Further suitable detergents consist of soaps which are water-soluble salts of higher fatty acids, such as alkali metal soaps, such as straight-chain saturated or unsaturated fatty acids having 8 to 24 carbon atoms, preferably 10 to 20 carbon atoms. Soaps include potassium, monoethanolamine, jetanolamine and triethanolamine soaps of CI2-C14 fatty acids, especially coconut oil fatty acids.

At least a portion of the absorbent substrate is impregnated with a detergent active compound at a concentration of 0.29/E1 or greater. The preferred amount and its distribution throughout the article will depend on the intended end use.

Preferably, the total amount per gram of the impregnated absorbent substrate is at least 0.4 g, particularly preferably at least 0.5 g,
Ideally it contains at least 1 g of detergent active compound. Generally, the impregnated absorbent substrate will contain no more than 2 grams of detergent active compound per gram.

Additionally, the dry article may optionally contain detergent additives including abrasives, foam stabilizers, disinfectants, fragrances, colorants, preservatives and inorganic salts.

If the dry article according to the invention comprises an abrasive, suitable abrasives consist of mineral particles, such as calcite, or polymeric beads, such as polyvinyl chloride beads and polyalkalene beads. Preferably, this type of abrasive material is fixedly attached to at least a portion of the absorbent substrate.

Moisture Barrier When used to clean soiled surfaces in the presence of water, a sheet is placed on the surface of the absorbent substrate to effectively reduce the rate at which the detergent active compounds impregnated into the dry article will leach out of this article. Apply a moisture barrier that covers at least a portion of the entire surface of the

This moisture barrier should be applied in corresponding areas on both sides of the sheet to form a sundry that prevents or restricts the access of moisture to the portion of the sheet to be protected. The presence of this barrier therefore reduces the rate at which water can enter the article and thus leach detergent active compounds and other water-soluble or water-dispersible substances during use, thus reducing the rate at which detergent active compounds and other water-soluble or water-dispersible substances can This item can be used for a longer than normal time until it runs out.
Or can be reused several times.

Examples of substances used to form a moisture barrier include wax emulsions such as menwax (M
hydrophobic materials such as ESOWAX and GAMP.

Menwax and Gump wax emulsions are manufactured by Grangelsol Limited 9 and "Menwax" and "Gump" are registered trademarks.

Other suitable hydrophobic materials are aqueous polymer emulsions (known as "binding resins"), silicones or mixtures of silicone oils and silicone waxes, natural and synthetic rubbers of the kind, and resins such as shellac, heat melt and waxes such as paraffin wax.

Examples of aqueous polymer emulsions include: Self-crosslinking vinyl acetate/ethylene copolymer emulsions, such as VINAMUL R32337.
, Vinamul R32300 and Vinamul 3231; vinyl acetate/ethylene copolymer emulsions such as Vinamul 3240 and Vinamul 3252;
Acrylic copolymer emulsion, such as Vinamul 68
i5; aqueous dispersions of self-reactive vinyl acetate/acrylic copolymers, such as National (NAT I 0NAL) 1
25-2833° National Polymer Emulsion is manufactured by National Starchro and Gemicals Corporation.

Hydrophobic substances of this type can be applied to the surface of the substrate as a decorative pattern.

Polymer emulsions of various types, such as Vinamul R32
It will be appreciated that 337 may be used to increase the wet strength of the substrate and to form a moisture barrier.

An example of a hot melt is National Instant Rotary (N
ATIONAL lN5TANT-LOK) 73, National Dispomelt (NATIONAL DISP
OMELT 2.70, and National Dispomelt 350, which are available from National At9 Hesipps, Inc.

IN8TANT-LOK and DISPOMFJLT are registered trademarks.

Hydrophilic materials such as polyvinyl alcohol, gelatin, and certain starches can also be used to form a moisture barrier. This type of material initially reduces the rate at which water penetrates into the dry article, but eventually dissolves or gradually disappears from the article as a distinctive design pattern, motif or picture. Hydrophilic substances of this type can be applied to the surface of the article.

Mixtures of hydrophobic and hydrophilic substances can be used, such as those exemplified herein.

In addition to acting as a moisture barrier, these materials can desirably increase the perceived bulk of the wiping article and improve its cleaning ability.

The dry and rolled product may optionally be further supplemented with moisture barrier adducts such as anti-assimilation agents such as POLY-MU.
L) MS40 and NOPCO 1097A can also be included to reduce the tendency of dry articles to stick together.

Borimuru MS40, a polyethylene emulsion and Nopco 1097A, a calcium stearate dispersion (Diamond)? , available from Jamrock.

``Polymul'' and ``Nopco'' are registered trademarks.O The percentage of the total surface area of the absorbent substrate that provides a moisture barrier depends on whether the moisture barrier is hydrophobic or hydrophilic and is further impregnated into the article. It depends on the desired release time of the detergent active compound and other water-soluble or dispersible substances used.

Thus, the moisture barrier can cover the entire surface of the absorbent substrate if this barrier material is hydrophilic, whereas the area covered is 95% of the total surface area if a hydrophobic barrier material is used. Must not exceed.

Therefore, generally the moisture barrier should cover 10-95% of the total surface area of the absorbent substrate. By covering less than 10% of the total surface area in this manner, it is believed that the rate at which the detergent active compound leaches from the article will not be significantly lower than without the application of moisture. Conversely, if about 95% of the total area is covered with a moisture-impermeable film, the rate at which detergent-active compounds will leach out of the article upon contact with water will be insufficient to clean soiled surfaces.

The material used to form the moisture barrier can be a normally solid material or gel or a highly viscous liquid, provided that it does not migrate appreciably from the intended area of the substrate after application. shall be.

The moisture barrier can be applied to the surface of the absorbent substrate, for example as parallel stripes or twill or checks or any other design, decoration or lettering.

Additionally, the detergent active compound or moisture barrier can also include water-soluble dyes or colorants that disappear from the article after repeated use to signal that the article has lost the detergent active compound.

The wiping article of the invention should have a substantially dry feel
he-touch), i.e., substantially free of water in amounts that would provide a wet feel until needed for use in cleaning soiled surfaces.

Conveniently, the wiping article has a square or vine-like dimension that is convenient to hold in the hand, thus having a surface area larger than the surface area of the hand, and used to effectively clean soiled surfaces. Supplied in the form of rectangular sheets.

Convenient article dimensions for adult use are at least o,
o3. (area of, more generally at least 0.05 m
It has an area of .

[Embarrassing Example of the Invention] If the wiping article is intended for use in washing the surfaces of the human body, for example when taking a shower, the absorbent substrate is preferably coated entirely with a detergent-active compound, as desired. Preferably, the moisture barrier covers 20-70% of the total surface area of the absorbent substrate.

If the wiping article is intended for use in cleaning hard surfaces, the cleaning or absorbent substrate may have only one portion (i.e., the "first portion") containing the detergent-active compound and the remainder of the substrate containing the detergent-active compound. The portion (ie, the “second portion”) is impregnated with the detergent active compound and optionally adduct so as to be substantially free of the detergent active compound.

During use in cleaning hard surfaces, the surface of the absorbent substrate is modified to control and reduce the rate at which water penetrates the article and thus leaches detergent-active compounds and other water-soluble or water-dispersible adducts. The water-insoluble moisture barrier applied is
Preferably, as described above, a 9-inch sand is formed over the "first portion" on both sides of the substrate to encapsulate the detergent active compound contained in the "first portion."

In this embodiment of the invention, the surface area of the "first part" with the detergent active compound can be between 10 and 90% of the total surface area, and the surface area of the "second part" can therefore also be between 10 and 90% of the total surface area. It can be done. Preferably, the surface area of each portion should be 40-60%, ideally about 50% of the total surface area of the absorbent substrate.

the first portion may represent a single region of the absorbent substrate;
Alternatively, a plurality of regions separated from each other by the second portion can also be shown.

Preferably, the "first part" and the "second part" represent parallel striped, twilled or checkered areas such that areas of the "first part" and areas of the "second part" alternate. .

Therefore, the area of the absorbent substrate representing the "first portion" is
Suitable for delivering a detergent-active compound when the article is used to clean soiled hard surfaces, the region of the absorbent substrate representing a "second portion" is detached from the surface by the action of the detergent-active compound. Intended to be suitable for collecting dirt or polishing surfaces.

The article can be rinsed to remove accumulated soil from the "second part" without significant loss of detergent active compounds from the "first part" and then reused.

Providing two or more layers of absorbent substrate can further improve the durability, bulk, and performance of the wiping article in delivering detergent active compounds and moving liquids to and from surfaces during cleaning operations. can. For this purpose, adhesives can be used to laminate separate sheets of absorbent substrate to bring them into close contact with each other. Adhesives suitable for use in laminating the sheets of absorbent substrates include, for example, hydrophobic polymer emulsions, crosslinkable polymers or hot melt adhesives, such as those also used to form the moisture barrier as described above. including agents.

The present invention will now be further explained with reference to the accompanying drawings: As shown in FIGS. 1 and 2, each side of the wiping strip is coated with a moisture barrier 12, and in particular as shown in FIG. Form a series of 9-inch sands as shown. The width of each moisture stripe is slightly wider than the corresponding detergent active compound stripe.

The wiping article shown in Figure 3 has the same detergent active compound and moisture barrier stripes as shown in Figures 1 and 2, but with two sheets of absorbent substrate. is "welded" into a 5M sandwich by stripes of moisture barrier 12 at 0.degree. C. to form a double laminated, layer wiping article.

The wiping article shown in Figure 4 is similar to Figures 1 and 2.
The structure is similar to that shown in the figure, but with the addition of particulate abrasive material 138, which is coated with stripes 11 of each detergent active compound.
Supported by

The wiping article shown in FIG. 5 is of similar construction to that shown in FIG. Supplied dry, ie they are dry to the touch. In use, they can be wetted with water and used to clean a solid surface, or they can be placed dry on a pre-wetted solid surface and the surface then cleaned and the remaining moisture wicked away. It can be used for.

Manufacture of wiping articles The wiping articles of the present invention are prepared by simply straining a suitable liquid detergent composition comprising a detergent active compound and optionally other detergent additives onto a piece or continuous roll of absorbent substrate. can do. This liquid detergent composition can be applied uniformly over the entire absorbent substrate, or in the desired pattern, and the impregnated substrate thus obtained is then dried in hot air. A moisture barrier can then be applied to both sides of the dried article by any suitable method, for example by gravure (
Printing methods using printing rollers or hot melt extrusion techniques are preferred.

Additionally, a drying step and/or a heating step is used to dry the moisture barrier material and/or to crosslink the selected moisture barrier material if crosslinking is required.

The dry-feeling articles thus obtained can be packaged individually, for example in sachets of plastic material, until they are needed for use, or they can be packed in bulk or used in a suitable dishwasher. It can also be supplied as a continuous roll.

Menwax (ME
SOWAX), a hydrophobic moisture barrier material, was coated in stripes, and the stripes were aligned precisely with each other to effectively sandwich areas of the fabric between identical areas of men's wax. Therefore, when the article is immersed in water after 10°C, the sanded 9-inch portion of the impregnated fabric is effectively protected against direct contact with water. However, [wicking ('
Due to the gradual loss through the barrier, the detergent active compound in each "sand inch" can be slowly leached out. The impregnated and partially coated Strallene cloth pieces were each soaked with 250 ml of tap water. The solution was immersed in each of 10 beakers and leached at 40°C. The immersion time in each beaker containing water was 30 seconds.

The amount of dye leached was measured spectrophotometrically to assess the amount of detergent active compound leached during each dip.

The leaching rate of the detergent active compound is proportional to the leaching rate of the dye.

This experiment was repeated using paraffin wax as the moisture barrier material and also using uncoated stralene for comparison purposes.

These results are shown in Table 1: The presence of a hydrophobic moisture barrier, such as menwax or paraffin wax, significantly reduces the rate at which detergent active compounds leach from the wiping article after 5 minutes of contact with water. is concluded from the above results. Of the coated articles, those with a menwax moisture barrier covering 65% of the total surface area retained 13% by weight of the initially impregnated detergent active compound. Similarly, the corresponding figure for paraffin wax-coated articles (53% coverage) is 22%, with detergent-active compounds resulting from coverage of at least half of the total surface of detergent-impregnated articles with a moisture barrier after repeated contact with fresh water. It was confirmed that the water was supplied continuously and in a controlled manner.

Application of wiping article The wiping article of the present invention can be used to clean the skin surface, and is particularly useful when taking a shower.
You can use these to wash your hair or all surfaces of your body. The article is preferably capable of producing a large amount of suds throughout the shower and has a wet strength such that it is resistant to disintegration when used under normal use conditions.

Furthermore, this wiping article can also be used when taking a bath.

The wiping articles may be placed dry in a Sportbag, Hunt 9 bag or pocket, or in that each article contains a predetermined amount of detergent and other skin active ingredients present in the composition. Especially convenient. These are intended to be disposable and therefore do not pose hygiene issues such as reusable bath flannels. The ability of the wiping article to gradually release detergent active compounds is advantageous during showering in that the article generates and maintains suds for the entire duration of a typical shower (ie, up to 5 minutes). Furthermore, given this advantage, each wiping article can have a lower "amount" of detergent active compound than the corresponding uncoated article.

The wiping articles of the invention can also be used to clean hard surfaces, and for this purpose they are conveniently packed into plastic bags or carton boxes, from which they can be removed before use.

This type of wiping article can be used, for example, on kitchen work surfaces,
Particularly suitable for repeated use in cleaning dirty hard surfaces such as bathrooms and washrooms or floors. They therefore prove particularly useful in schools, restaurants, cafeterias and hospitals as well as in the home.

The present invention will be explained below with reference to Examples.

This example illustrates a non-abrasive wipe according to the present invention for kitchen hard surfaces.

A piece of cloth of Mitsubishi TCF408 as an absorbent substrate was impregnated with an aqueous solution containing an active detergent having the following composition: wt. .7 The water-insoluble water filter used as a delayed release agent was VINAMUL 3231.

Individual wipes were made by the following procedure: A foam rubber pad was used to make one print of the detergent solution onto the substrate, creating a detergent stripe (the "first section") each approximately 8 mm wide. This detergent solution is allowed to dry at room temperature and then a paint brush is used to apply a moisture barrier to both sides of the substrate, covering the detergent stripes and removing any untreated material between these stripes without unduly destroying the underlying detergent. Only a small amount was present on both sides of each stripe over the area ("Second Section J"). The moisture barrier was dried at room temperature and then bridged by heating in the open at 140.degree. C. for 5 minutes.

The wipe thus made had the following details: Total dimensions 300×370 Total area 0° 111 % area of “first part” 40% % area coated with delayed release agent 45 % Dry weight of the substrate C11) 9 Drying chamber i of the first part (g) 3.6 Dry weight of the substrate + detergent (,!i') 14 Dry weight of the detergent (g) 5 Dry weight of the wiping cloth (Ji' ) 21 Dry weight of moisture barrier (g) 7 Loading ratio of detergent to substrate (5:3.6) = 1.39 Moisture barrier is used to allow sustained release of detergent. The detergent stripes contain a dye (yellow 2G) that acts as an indicator of detergent release.

Thus, when the wipe is no longer yellow, the detergent has disappeared.

This example illustrates a disposable shower flannel according to the present invention.

Strallene (7% by weight) containing 40% cellulose fibers
15:50) A piece of cloth was soaked in a detergent composition containing the following ingredients: wt% (28% AD) 30.5 Coconut Jetanolamide 92.5 Formalin (
36.6%) 0.1 Water Adjusted iH to 5.6 with citric acid to 100.

Parallel stripes of menwax (wax emulsion) are then applied with a paint brush to the corresponding areas on both sides of the detergent-impregnated fabric, covering 40% of the total surface area. I made a sandwich in between. Air drying the men's wax left visible orange streaks of wax material on the fabric.

The wiping article thus produced was inspected for dimensions, weight and other data and the results are shown below: Dimensions of the wiping article (tomo) 225 x 287 Area of the wiping article (m) 0.0646 Area of wax 0.0258 % of total area covered by wax 40 Dry weight of wiping article (9
) 8.52 Dry weight of absorbent substrate: Strallene (J)
3.14 Dry weight of detergent composition (11) 5.3 s
Anionic detergent loading 1 matrix g) 0.67 Total water-soluble solids loading (cymatrix g) 1.71
Wet tensile strength: cross-web direction (N/in) 274
Wet tensile strength: Longitudinal direction (N/m) 354 Example
3 The procedure described in Example 2 was repeated, except that the detergent composition impregnated into the absorbent substrate had the following composition; Ingredients Weight % Empicol (BIIC0L) ESB 3'Citric acid 0・1 Fragrance, colorant Sufficient amount of water up to 100 ☆ Cocoamphocarboxyglycinate + sodium lauryl sulfate + hexylene glycol (48% AD) ☆☆ Sodium lauryl ether sulfate (3EO) This example is a disposable product according to the present invention. Shower flannel is shown as an example.

Stralene containing 40% cellulose fiber (7
A piece of cloth (15:50) was soaked in a detergent composition containing the following ingredients: wt % Milanol 2 MCA Mod 45 Empicol ESB 3 30 Citric acid 0.1 Fragrance 2 Colorant Sufficient amount of water up to 100% in the above detergent composition After soaking, the Strallene cloth pieces were dehydrated and then air-dried.

Parallel stripes of Vinamul 3240 as a water-insoluble moisture barrier were then applied to corresponding areas on both sides of the detergent-impregnated fabric to cover 45% of the total surface area, with 45% of the fabric sandwiched between the striped areas. did.

The dimensions and other data for the wiping article thus prepared were similar to the data for the article described in Example 2.

A panel of three testers evaluated the wiping articles made as described above in Examples 2-4 for use in the shower. A similar article without the polymer coating was also tested on this panel.

In each case, the wiping articles were weighed before showering and after one use in the shower to determine the amount of residual active detergent retained on each article. The results are shown in Table 2: Table 2 Tester Difference: Detergent remaining in article after use (%) Uncoated Covered Covered - Uncoated (%) 1 9.9 51.1 41.2 2 33. 3 54, 5 21. ．． 2 3 0.7 35,3 34.6 These results indicate that a significant proportion of detergent is lost from the wiping article after use if a protective water-insoluble moisture barrier is not applied.

° On the contrary, the presence of this type of barrier significantly reduces the loss of detergent during use, allowing it to be used for longer than normal times under the shower, or for continuous repeated use. I can do it.

[Brief explanation of the drawing]

FIG. 1 is a plan view of the wiping article, FIG. 2 is a sectional view of the article shown in FIG. 1, FIG. 3 is a sectional view of the hard surface wiping article having a laminated structure, and FIGS. 4 and 5. FIG. 1 is a cross-sectional view of an abrasive wiping article. 10... Absorbent base sheet, 11...
- Detergent active compound stripes, 12...moisture barrier, 13...granular abrasive material. Continuation of page 1 Priority claim [Phase] 198g May 118 [Phase] UK 1 [Ltd.] Inventor Alan Wooten Italy: GB) e8412047

Claims (1)

Claims: (1) A substantially dry-feel wiping article suitable for use in the presence of water to clean soiled surfaces, the article being in the form of a sheet impregnated with a detergent-active compound. an absorbent substrate having a water absorption capacity of at least 1',9/g; At least 1 of the area of the absorbent substrate impregnated with the compound
A wiping article characterized in that it is provided with a moisture barrier covering at least 10% of the total area of each side of the sheet so as to form a sandwich encapsulating 0%. (2) The article according to claim 1, wherein the absorbent substrate is a nonwoven sheet made of cellulose fibers having a thickness of 100 to 1000 μm. (3) the absorbent substrate is selected from polyamide 9, polyester, polypropylene or mixtures thereof; and 4) a minimum wet tensile strength of at least 50 N/m. Articles listed in . (5) The article according to any one of claims 1 to 4, characterized by a wet tensile strength of 95 to 1000 N/m. (6) The detergent active compound is selected from anionic, nonionic, amphoteric, zwitterionic or cationic detergent active compounds or compatible mixtures thereof. Articles described in any of paragraph 5. (7) An article according to any one of claims 1 to 6, characterized in that the detergent active compound consists of soap. (8) at least 0.2 in at least a portion of the absorbent substrate;
8. Article according to any one of claims 1 to 7, characterized in that it is impregnated with a detergent active compound at a concentration of 11/g. (9) 014 to 2117 in at least a portion of the absorbent substrate
Article 〇 (1G) according to any one of claims 1 to 8, characterized in that the article is impregnated with a detergent active compound at a concentration of Article according to any one of claims 1 to 9, characterized in that it further comprises a detergent additive selected from inorganic salts and mixtures thereof.Abrasive particles fixedly bound to α1) An article according to any one of claims 1 to 10, characterized in that the article comprises: a) characterized in that the moisture barrier consists of a hydrophobic material selected from hot melts, waxes, wax emulsions, polymer emulsions, silicones, silicone oils and silicone wax mixtures, natural and synthetic rubbers, resins and mixtures thereof; An article according to any one of claims 1 to 11. 03 Moisture barrier is polyvinyl alcohol, gelatin,
13. Article according to any one of claims 1 to 12, characterized in that it consists of a hydrophilic material selected from starch and mixtures thereof. (14) The article according to any one of claims 1 to 13, wherein the moisture barrier covers the entire area of both sides of the absorbent base sheet. 14. An article according to any one of claims 1 to 13, wherein the moisture barrier covers 10 to 95% of the total area of each side of the absorbent substrate sheet.珀 The moisture barrier covers 2 of the total area of each side of the absorbent base sheet.
Claim 1 characterized in that it covers 0 to 70%
The article according to any one of Items 1 to 13. 07) Claim 1, characterized in that the moisture barrier is provided on each side of the absorbent base sheet as a decorative pattern such as a parallel pattern, a twill pattern or a check pattern, or as letters.
The article according to any one of Items 1 to 16. QgI Absorbent substrate comprising a first part impregnated with a detergent active compound and a second part substantially free of detergent active compounds.
Articles described in any of Section 7. 19. The article of claim 18, wherein the first portion is coated on both sides of the absorbent substrate sheet to form a sandwich encapsulating the detergent active compound. 2. An article as claimed in claim Pgts or claim 19, characterized in that the first part defines regions of the absorbent substrate separated from each other by a second part. (m) An article according to any one of claims 1 to 20 substantially as shown in any of the accompanying drawings.