KR101813152B1

KR101813152B1 - Cleaning cloth

Info

Publication number: KR101813152B1
Application number: KR1020157036593A
Authority: KR
Inventors: 폴커 리트할러; 요르크 둥켈; 요르크 하우스도르프; 게리우스 브룸; 안드레아스 아이젠후트
Original assignee: 칼 프로이덴베르크 카게
Priority date: 2013-05-28
Filing date: 2014-04-11
Publication date: 2017-12-28
Also published as: RU2015155558A; EP3004453B1; DE102013008985A1; EP3004453A1; KR20160012218A; ES2717670T3; CN105229222A; RU2635158C2; WO2014191071A1; CN105229222B

Abstract

The present invention relates to a cleaning cloth made of a textile-based material, wherein the PVF microfoam is at least partially provided with an amount such that the ratio of microfoam to the total weight of the cleaning cloth is less than 60 wt%, preferably less than 40 wt% It is about cloth. Textile-based materials do not have PVA or have less than 50 wt% PVA.

Description

Cleaning cloth {CLEANING CLOTH}

The present invention relates to a cleaning cloth comprising a textile based material and a coating / impregnation thereon. The wash cloth represents a novel combination of excellent wash characteristics and excellent gliding characteristics, inexpensive fabrication and excellent wash-fastness.

Various types of cleaning cloths for household or professional cleaning of flooring or other surfaces are known. The cleaning cloth may have a simple structure by being formed of a main body, for example, a single-layer textile. It is an important requirement for cleaning cloths to efficiently absorb and wash contaminants from the surface and to completely re-emit as much as possible during the wringing operation. The ability to absorb and release water is an additional important requirement of the wash cloth. Water is used not only to remove stuck contaminants but also to combine debris of contaminants and / or contaminants that have been detached before removing the fabric from the surface to be cleaned. The gliding properties for some of the fabrics are additionally important to the user. It should be noted that when used to clean a large area of cleaning cloth (eg, windows, blackboards, large tables, walls, automotive bodywork), it must tend to glide easily to achieve good ergonomics and low power consumption during wiping It is because it is revealed. In contrast, in the case of smaller or more highly contaminated areas, the user is typically more likely to be able to remove stubborn contaminants and / or to allow the cleaning cloth to provide a higher level of friction so that the cleaning operation can also provide haptic feedback. .

It is known to provide coating / impregnation of textile based materials for improved cleaning performance. Polyurethane (PU) coating / impregnation may be provided, for example, in textile materials. These PU coating / impregnating materials are generally applied by dipping the substrate into a solution of PU and dimethylformamide (DMF).

In a further known process, a textile-based material composed of PVA (polyvinyl alcohol) fibers is coated / impregnated with PVF microfoam. Good adhesion between the fiber and the coating / impregnation material is achieved because the surface of the fiber is poorly dissolved in the aqueous medium during the coating / impregnation process, resulting in a durable and wash-fast chemical / Physical surface-type bonds.

It is an object of the present invention to provide a cleaning cloth of the type mentioned in the introduction which combines excellent gliding and water-absorbing properties and excellent cleaning properties, while exhibiting excellent fastness to washing. A very good cleaning effect should also be achievable with a cleaning cloth.

The cleaning cloth should be able to re-emit the contaminants absorbed, especially contaminants, easily and efficiently during rinsing. This prevents, for example, absorbed sand (e.g., made of quartz pieces) from scratching or damaging a chromed / polished surface during its cleaning. The cleaning cloth should be additionally washable to a weak surface of the article or surface. Finally, the coating / impregnation should exhibit sufficient adhesion to the textile-based material during cleaning, more particularly to ensure the corresponding mechanical stability in mechanical laundering. The high stability in mechanical washing can be achieved in the context of the present invention in the context of the present invention by using 7 g of Eltra detergent / disinfectant, a sterilization temperature of 60 ° C, a treatment time of 20 minutes, a liquor ratio of 5: 1 and an AB target activity As used herein means that the weight loss of the wash cloth is less than 5 wt% in the Eltra wash, as defined in Bundesgesundheitsblatt - Gesundheitsschutz - Gesundheitsschutz 10, 2007, page 1345.

This object is achieved by a cleaning cloth comprising a textile based material in which the PVF microfoam is provided at least in part in an amount such that the PVF microfoam is less than 60 wt%, preferably less than 50 wt% of the total weight of the cleaning cloth, The material is achieved according to the invention by a cleaning cloth which does not contain PVA fibers or which comprises PVA fibers in an amount of less than 50 wt%.

It is noteworthy that the cleaning cloth of the present invention comprises a textile-based material comprised of PVA fibers and provided with a PVF microfoam. Such PVF microfoam can be present by coating and / or impregnation and has a pore size of less than 100 μm. The microfoam is preferably present by impregnation as well as coating. That is, not only is the fiber gap filled with PVF microfoam, but there is also a covering layer of PVF microfoam.

Surprisingly, the cleaning cloth of the present invention has an excellent level of fastness to washing. This is surprising because until now it has always been assumed that coating / impregnation of PVA fibers into the PVA solution is required for high fastness properties. This is because of the chemical similarity of the two materials, and also because the partial dissolution of the PVA fibers causes good chemical and mechanical bonding between the fibers and the microfoam. This is why they are characterized by excellent mechanical stability in the washing cloth wash of the present invention, especially in mechanical washing.

However, in actual tests in accordance with the present invention, PP / PES / PA having a non-PVA type backing, for example PVF, when the foam is microfoam, is excellent, in particular, . Accordingly, the proportion of PVA, in particular PVA fibers, in the cleaning cloth of the present invention may be less than 50 wt% or alternatively less than 30 wt%, or alternatively less than 10 wt%, especially less than 5 wt%. The cleaning cloth may also not contain any PVA, in particular any PVA fibers.

While not intending to be limited to one particular mechanism, the inventors believe that the development of a "stretched sail" within a microfoam structure is an important factor in the excellent bond between non-PVA backing and PVF coating.

According to the present invention, the PVF microfoam is provided at least in part to the textile-based material in an amount such that the PVF microfoam is less than 50 wt%, preferably less than 30 wt% of the total weight of the wash cloth. The formation of such a fairly low proportion of PVF microfoames, as a result of PVF microfoames, in principle, leads to a loss of softness and thereby a very hard cleaning cloth, so that the textiles and soft touch of the final wash cloth are substantially dry It is advantageous because it turns out to be maintained.

In actual testing, the degree of adhesion of the PVF microfoam to a textile-based material, for example, a nonwoven fabric, has been demonstrated to be improved when the base material has a ring opening form. This is advantageous because the PVA solution used to produce the PVF microfoam can efficiently penetrate the base material, for example, to surround the web fibers / filaments on all sides.

If very dense base materials are used, good penetration by the PVF microfoam into the base material can also be achieved by using a PVA solution with a very low viscosity. PVF (polyvinylformal) microfoams can be formed by reaction of formaldehyde with PVA, as known to those skilled in the art. This reduces the water solubility of PVA. For the purposes of the present invention, the PVA foam preferably has a water solubility of less than 5 wt% at 100 < 0 > C.

In actual testing, the cleaning cloth of the present invention has been shown to combine excellent water-absorption and gliding properties with good cleaning properties, in addition to having high fastness. At the same time, good rinseability of the contaminants absorbed from the fabric is obtained.

The textile-based material may possibly consist of at least some microfibrous material. This embodiment may be advantageous because in some applications the use of fibers comprising hydrophobic materials may also be advantageous because of the high water-absorption capacity (e.g.,% of the dry weight of the fabric) due to the capillary action of the knitted microfibrous yarns have.

In one embodiment of the present invention, the cleaning cloth comprises a hydrophobic material in combination with a hydrophilic material (PVF microfoam) and is thus entirely amphiphilic. This type of cleaning cloth has a high cleaning effect on cleaning both lipophilic and hydrophilic contaminants, enabling a very wide variety of applications.

The use of PVF is further advantageous in that PVF is itself particularly absorbent due to the free OH groups. The hydrophilicity of the PVF material is further increased by using it in the form of a microfoam. These materials have a much higher degree of hydrophilicity due to the micropores of the microfoam structure. The PVF microfoam can additionally accommodate the yarns of the fibers, and optionally the textile-based material, to a fairly or even to a complete extent, thus making it possible to achieve stable mechanical bonding between the base material and the coating / impregnation. This is advantageous because the PVF microfoam does not actually have good adhesion to such materials, especially when hydrophobic materials are used as the base material.

In one preferred embodiment of the invention, the base material comprising the nonwoven is combined with a PVF microfoam. This is advantageous because the nonwoven is simple and inexpensive to produce, yet the cleaning cloth is characterized by excellent levels of cleaning performance and wash fastness.

The use of a base material in the form of a knitted fabric has the further effect of improving the high wash fastness because the knit-based material already has a high original wash fastness due to the spatial cross-linking of the yarn.

In practical tests, the basis weight of PVF coating and / or impregnation has advantageously been demonstrated to be in the range of 10 to 150 g / m ² , preferably 50 to 100 g / m ² . The basis weight of the textile-based material advantageously ranges from 80 to 200 g / m ² , preferably from 90 to 180 g / m ² , in particular from 100 to 140 g / m ² .

The textile-based material of the present invention may be based on fibers comprising hydrophobic materials. The term "hydrophobic" as used in the present invention should be understood to have a typical meaning. More particularly, for the purposes of the present invention, a material that is considered hydrophobic has a contact angle of at least 90 DEG with respect to water on the surface of the compression body formed from the material. As will be appreciated, the contact angle can be, for example,

Can be measured using an angular angle measuring tool from < RTI ID = 0.0 > However, fibers containing hydrophilic materials have proven to be equally suitable.

It has been found that fibers comprising or consisting of the following materials are particularly suitable: polyamide or polyester, viscose, hydrophobized viscose, hydrophilicized viscose, modified polyester, polyacrylonitrile, triacetate, acetate, poly Carbonates, polyolefins such as polyethylene and polypropylene, polyvinyl chloride and / or mixtures thereof. The invention is particularly preferred when using polyamides, especially nylon-6 or -6,6, polyethylene and / or polyester, especially PET and / or mixtures thereof.

Fibers of polyester, viscose, polyethylene, especially combinations thereof, have proven particularly suitable for the purposes of the present invention.

Staple fibers and / or continuous filaments are preferred. In one preferred embodiment, this type of textile based material contains polyester, especially PET and / or modified polyester. The latter may be used alone as a raw material or may be mixed with other fibers (e.g., viscose).

The fiber linear density used may range from 0.05 to 3 dtex. The fiber linear density used is preferably in the range of micro fibers, i.e. 0.1 to 1 dtex, in some applications. The advantage of using microfibers is that they provide excellent cleaning results and are very soft to provide a pleasant feel. For example, microfibers having a linear density in the range of 0.05 to 1.0 dtex, preferably 0.1 to 0.7 dtex, may be used.

In designating the ratio between the textile-based material and the coating / impregnation with PVF, the ratio between the textile-based material and the PVF microfoam is suitably selected because the PVF foam in principle loses its softness and thus results in a very hard cleaning cloth A cleaning cloth can be obtained in which the textile of the base material and the soft touch are kept at least partially even in the dry state.

The total basis weight of the wash cloth is preferably in the range of 90 to 350 g / m ² , more preferably 200 to 300 g / m ² . The amount of fibers in the cleaning cloth is preferably in the range of 60 to 200 g / m ² , more preferably 100 to 120 g / m ² . The fibers used to produce the textile sheet material are available in a wide variety of styles at low cost, and the color and PVA coating / impregnation is simple to apply using conventional processes.

For the purposes of the present invention, it is desirable to provide a uniform coating / impregnation of the sheet material. An advantage of this embodiment is that uniform coating / impregnation has the effect of solidifying the sheet material and thereby improving its stability. In addition, a high proportion of hydrophilic PVF results in particularly good removal of a relatively large amount of liquid from the surface to be cleaned. Secondly, the wiping will leave a liquid on the surface to be cleaned, with only a thin film or even a film thereafter. Especially nonstripy cleaning on glossy surfaces.

Textile sheet materials are not only solidified in principle, but also can use non-reinforced textile-based materials. However, in order to obtain a mechanically stable cleaning cloth, it is advantageous that the textile-based material is at least partially mechanically, thermally and / or chemically solidified. Especially in the case of batt, the fibers arranged randomly or partly side by side can be mechanically and / or thermally and / or chemically solidified by stitching.

The sheet material may be produced using fibers and / or yarns. The sheet material is preferably a nonwoven fabric, a knitted fabric, a laid fabric, a fabric, a braided fabric, an interlocked fabric, a felt, a cotton wool, a tufted fabric, Combinations and also other sheet-like structures.

The use of a nonwoven fabric is particularly preferred in the present invention. Nonwovens offer the advantage of being simple and inexpensive to produce.

The basis weight of the wash cloth may likewise vary depending on the intended purpose. For most purposes, weights of 90 to 350 g / m ² , preferably 180 to 230 g / m ² , have been found to be advantageous.

Depending on the intended purpose, textile-based materials may be provided with easy-care and / or flame retardant properties. Thus, the fibers may consist of polymers containing up to 10 wt% of additives, such as coloring pigments, permanent antistatic agents, fungicides, bactericides, acaricides and / or components affecting hydrophilic or hydrophobic properties .

The textile-based material may additionally contain fibers (staple fibers or continuous filaments), which in this case are colored, for example, in solution during their production. Subsequent dyeing processes for native dyeing (dummy dyeing) or base material ready for production (piece dyeing) have proved equally suitable.

Due to its advantageous properties, the use of a textile sheet material as the cleaning textile is recommended. For example, a wiping or scouring transition can be made from this.

In embodiments of the present invention, the textile sheet material surface coated / impregnated with PVF microfoam is applied in a pattern printed by an abradant, for example, polishing particles. The polishing particles may be formed by, for example, diatomaceous earth. These particles impart a slight polishing effect to the wash cloth. Abrasives can be applied to textile-based materials in a simple printing process in a wide variety of ways. Thus, it is possible to achieve additional cleaning effects and also decorative effects on the textile structure.

For some intended purposes, it may be advantageous for the cleaning cloth to be raised, sanded, brushed, or calendered.

Likewise, it is possible to pretreat textile-based materials. Possibilities for this include printing, polishing, or partial embossing. When a colorless PVF foam is used, especially printing can be permanent and maintain the clarity of the wash-fastness even after coating / impregnation.

It is advantageous that the cleaning cloth can be produced in a variety of colors in order to indicate the use of the cloth only in one cleaning area, for example in the case of professional cleaning, for hygiene purposes. In the present invention, the coloring of the cloth can be performed, for example, as follows:

The textile-based material used is already partially or uniformly colored. When combined with a colorless PVF adduct, the background color of the underlying material is kept sharp and clear.

Alternatively, the PVA solution used to produce the PVF microfoam can also be mixed with a colored pigment. In this case, a colorless, therefore inexpensive base material may be selected and the coloring of the wash cloth may be omitted entirely or otherwise only selected or established at a later stage of the PVF coating / impregnation. This has particular logistical advantages. The dye can be selected again due to its ability to introduce into the PVF material in a durable wash-fastened state, especially without bleeding.

The present invention further provides a process for producing a cleaning cloth of the present invention comprising the steps of:

First, textile sheet materials that do not contain PVA or contain less than 50 wt% PVA are made or made available in the form of textile-based materials. The PVA-containing aqueous solution may subsequently be applied using common application methods, such as pad-mangling, blade coating, spraying, slop padding, Based material through a slot die or a broad-slot die.

It has been found particularly advantageous to impregnate textile based materials with PVA aqueous solutions. Excess PVA can be squeezed, bladed, inhaled or otherwise removed depending on the desired coating / impregnation thickness. Thus, the base material to be treated may be introduced into an aqueous salt solution and / or suspension, for example, a sodium sulfate solution, and subsequently an acidic formaldehyde solution. In aqueous salt solutions, the PVA solution loses water and the PVA solidifies. In an acidic formaldehyde solution, PVA is crosslinked to form PVF.

In an advantageous embodiment, the aqueous PVA solution and / or suspension contains another further added substance, for example a colored pigment or other additive or particles, such as the abrasives mentioned above. The PVA solution preferably has a PVA solids content of 1 to 10 wt.%, Preferably 3 to 7 wt.%.

The process of the present invention provides a simple yet highly productive method for making a textile structure having a PVF-containing coating / impregnation. The PVF-containing coating / impregnation can be impregnated into the textile-based material to ensure secure attachment to the textile-based material.

Claims

A cleanig cloth comprising a textile-based material, wherein the PVF microfoam is provided in some or all of an amount such that the PVF microfoam is less than 60 wt% of the total weight of the wash cloth, and wherein the textile- , Or PVA in an amount less than 50 wt%, and wherein the coating or impregnation of the PVF microfoam has a basis weight of from 50 to 100 g / m < ² >.

The method of claim 1, wherein the textile-based material is selected from the group consisting of polyamides or polyesters, viscose, modified polyesters, polyester blended fabrics, polyamide blended fabrics, polyacrylonitrile, triacetate, acetate, polycarbonate, polyolefin, polyvinyl Chloride, glass fibers, mixtures thereof, or mixtures of one or more of these materials with one or more other materials.

The cleaning cloth according to claim 1 or 2, characterized in that the textile-based material is a nonwoven fabric.

The cleaning cloth of claim 1 or 2, wherein the textile-based material has a basis weight between 90 and 180 g / m ² .

A process for producing a cleaning cloth according to claims 1 or 2, characterized in that a PVA-containing aqueous solution is prepared and is provided on a textile sheet material which does not contain PVA or contains PVA in an amount of less than 50 wt%.

The cleaning cloth according to claim 2, wherein the polyolefin is polyethylene or polypropylene.