MXPA00003642A - Cleaning cloth - Google Patents

Abstract

The cleaning cloth(1) comprises microstaple fibers based on two or more different polymers and secondary absorbent staple fi produced in a spinning process.

Description

CLEANING CLOTH Description of the invention Technical Field The invention relates to a cleaning cloth in felt structure for wet, wet and / or dry cleaning. Cleaning cloths are commonly known and are intended to remove dirt from the surface of objects to absorb it themselves. To solve both tasks a cleaning cloth must have a very good cleaning capacity as well as a sufficient resistance to abrasion and have a sufficient volume of pores to store the dirt. STATE OF THE ART 15 DE OS 30 35 038 is a cleaning cloth having good qualities of use. It consists of porous microfibers of a polymeric material which have a fiber core substantially free of pores and a fiber jacket foamed with open pores. A cleaning cloth of polymeric material has a particularly high mechanical strength, which has positive effects in terms of resistance against abrasion. Through an intermixing of microfibers with staple fibers or continuous fibers a spring elasticity is achieved improved and increased consistency with improved dirt absorption capacity. Another form of design of a cleaning cloth is discussed in US Pat. No. 4,145,464. In this document is the cleaning cloth manufactured from a mixture of cellulose fibers and synthetic fibers which is covered on both sides by cellulose layers and acquires firmness by gluing together all the fibers in separate location areas. However, such a cleaning cloth does not have sufficient mechanical strength because the cellulose fibers have a relatively short length of less than 6.35 mm, due to which unsatisfactory abrasion resistance results. Already after a relatively short period of use the release of the fiber components that are deposited in the form of dust or lint particles on the surface to be cleaned may occur. Through EP 0 423 619 a cleaning cloth is also known which is formed by several layers, and specifically by a layer of synthetic continuous fibers, known as filament fibers, which on at least one of their sides have a layer of staple fibers mixed with natural fibers. It is indicated that the amount of natural fibers is from 15 to 70%. In this cleaning cloth a high resistance is achieved, in particular fc »-. , due to the lower and intermediate layers of continuous fibers. However, the short natural fibers of the covering layers also produce an unsatisfactory abrasion resistance, in a similar way as in the case of the previous US Pat. No. 4,145,464. SUMMARY OF THE INVENTION The invention relates to the task to create a cleaning cloth for wet, damp and / or dry cleaning that has a high resistance to abrasion and a large volume of absorption for carved dirt. It should also be as firm as possible, offer a good cleaning capacity and be pleasant to the touch. The solution of the task imposed in the case of a cleaning cloth of the type under consideration is achieved in accordance with the invention by constituting the cleaning cloth by microfibers cut from at least two different polymers and by secondary absorbent fibers produced in a spinning process. In a cleaning cloth of this nature combines the high cleaning capacity and resistance of the microfiber cut, and its resistance to abrasion, with the high absorption capacity of the secondary staple fibers. The secondary staple fibers are bonded to the cut microfibers, and are securely retained therein. In the case of the cut microfibers, these are multicomponent split fibers, in particular bicomponent split fibers. They are formed predominantly by polymers based on polyester and polyamide. Here there is a wide field of 5 possible variants. The choice of the unfolded synthetic fibers or split fibers is preferably carried out from an economic viewpoint and from the process technique in this case. The title of the multicomponent fibers is 1.7 to 3.0 dtex before its splitting. The title of the split synthetic fibers is less than 1 dtex, preferably less than 0.2 dtex. As secondary staple fibers, staple fibers manufactured from fibers are preferably used Natural fibers, in particular cellulose fibers, cotton fibers, viscose fibers, lyocell fibers and / or other absorbent staple fibers, such as polyvinyl alcohol fibers. The title of the secondary staple fibers is between 1.0 to 3.0 dtex. These spun staple fibers are considerably firmer than the usual natural fibers. In order to achieve a pore volume as high as possible it is convenient that the cleaning cloth is formed by at least two superposed layers of felt. In this it is particularly convenient if one of the layers of felt is constituted by microfibers cut and The secondary absorbent staple fibers and the other felt layer by polymeric tertiary staple fibers, in particular by a thermoplastic and absorbent secondary staple fibers. This layer of felt made by the use of tertiary cut fibers is particularly bulky.Thereby, in this case, the high cleaning capacity and abrasion resistance of the microfibers cut from one side of the cleaning cloth in combination with the Special volume 10 of the tertiary staple fibers and of the secondary staple fibers on the other side of the rag The absorption capacity is increased by the secondary staple fibers The especially preferred embodiment provides for providing an intermediate layer of felt 15 of tertiary staple fibers polymeric fibers and secondary absorbent fibers, which is surrounded by its sides in each case by A covered felt layer of cut microfibers and secondary absorbent staple fibers. In this cleaning cloth the two outer layers 20 which come into contact with the object to be cleaned have a high resistance to abrasion, while the intermediate layer has a particularly large volume with a high absorption capacity. As tertiary staple fibers, fibers cut from a polyamide with a title are preferably used. - ^^^ ^^ f -_ -j ^^^ _ ^^ - ^ - ^ - ^ MM ^? ll ^ - ^ Ll ^ lt T '"" Mfí ~ l' * ^ "^^ - - ~ * .ík * ^ Á l *. & s¡ * 3 ^ toWft? &- and usual for this type of fibers, which is above the title of microfibres. A multi-layered cloth of felt foresees first forming individual felt layers and joining them together with each other, in which each layer of felt can already be provided with the secondary staple fibers, but it is also possible to first provide the secondary staple fibers. the layer of tertiary staple fibers and to the microfibre layer without secondary fibers and to the secondary staple fibers in the layer, or layers, of microfibers cut by a layering of the layers with one another. They are joined to each other, which can be done by whipping, swirling or rolling, processes of this kind are known per se. n Particularly good results if the felt layers are joined to one another by spot welding. This results in a broken surface that increases the cleaning power of the cloth. In spot welding, individual felt layers can be reinforced by fusion zones by applying heat and pressure. However, it is also possible to reinforce the surfaces of the cleaning cloth by melting zones, in particular by calendering.

The surface weight of the cleaning cloth is generally 75 to 250 g / m2. In the case of a three-ply cleaning cloth of an intermediate layer of tertiary staple fibers and secondary bitumen fibers and two cover layers of cut microfibers and secondary staple fibers the surface weight of the intermediate ply is selected so as to represent the thickness of the intermediate layer. at 80% of the total surface weight. In this it is convenient if the surface weights of the cover layers are equal. The proportion of microfibers cut in the, or else the cover layers predominate over the proportion of secondary staple fibers. The proportion of microfibers cut is between 70 and 98%, preferably between 70 and 80%. In the intermediate layer the proportion of secondary staple fibers predominates over the proportion of tertiary staple fibers. It is between 70 and 100%, preferably 70 and 80%. Embodiment of the invention The invention is explained in more detail on the basis of two embodiments shown in the drawing. They show: figure 1 strongly amplified a section of a cleaning cloth with three layers of felt, in section, and figure 2 a section of a cleaning cloth of three layers of felt joined together by means of spot welding, in section . Embodiment of the invention In FIG. 1 a section through a section of a cleaning cloth 1 is strongly amplified, which is formed by three layers A, B, A of felt. The intermediate layer B is constituted by synthetic tertiary staple fibers mixed with secondary staple fibers, while both the cover layers A, A are formed by staple microfibers and secondary staple fibers. The two cover layers A, A have the same composition. The layers A, B, A of non-woven fibers are whipped by means of a water jet. By this the individual fibers are agglomerated with each other and the cut microfibers are at least partially deflected. There is a firm interlacing of the various fibers and felt layers with one another. In FIG. 2, a section of a three-layer cleaning cloth 2 is also shown in section. The three layers A, B, A of non-woven material have the same structuring as layers A, B, A of Figure 1. However, the layers have weld points at pre-established sites 3 in a pattern manner. By this means, a greater cleaning effect of the cloth 2 is obtained.

, M, < «AfMUW.J, .. ..t. * .-- ^.,. ", _ ^. .,. ^. ", _ ..- ,,. ,. ".,. ,,, ^" - "f", ........ .. ^. ., ...,,. a.-, ^ t H) ^, .. ^ f ^ point welding is achieved by calendering the felt layers by passing the felt layers together through two cylinders of which one is equipped with distributed knots in the form of a pattern and the other has a smooth surface. This results in the unilateral areas of fusion of the felt layers A, B, A in the points 3 of the cloth 2. By this measurement the individual layers A, B, A are firmly joined to each other and also, by means of the heated rollers the thermoplastic fibers of the individual layers stick to one another at least on the surface of the cloth and thereby enclose the secondary staple fibers. Before calendering them, the felt layers A, B, A are whipped by water jet to achieve a particularly strong bond between the fibers and the layers together. In addition, during the water jet treatment, the cut microfibers are unfolded.

Claims (22)

1. CLAIMS 1. Cleaning cloth with felt structure for wet, wet and dry cleaning, characterized in that the cleaning cloth consists of microfibers cut from at least two different polymers, and by secondary absorbent fibers cut in a spinning process. Cleaning cloth according to claim 1, characterized in that the cut microfibers are multi-component split fibers, in particular bicomponent split fibers. 3. Cleaning cloth according to claim 1 or 2, characterized in that the bicomponent split fibers are formed from polymers based on polyester and polyamide. Cleaning cloth according to one of claims 1 to 3, characterized in that the titer of the multi-component fibers is between 1.7 - 3.0 dtex before their splitting. 5. Cleaning cloth according to one of claims 1 to 4, characterized in that the titer of the split fibers is below 1 dtex, preferably below 0.2 dtex. Cleaning cloth according to one of Claims 4, characterized in that the secondary staple fibers are made of natural fibers, in particular cellulose fibers, cotton fibers, viscose fibers, lyocell fibers and / or other absorbent staple fibers, such as alcohol fibers poly. 7. Cleaning cloth according to one of claims 1 to 6, characterized in that the title of the secondary staple fibers is 1.0 to 3.0 dtex. Cleaning cloth according to one of Claims 1 to 7, characterized in that the cleaning cloth is constituted by at least two layers of felt superimposed. Cleaning cloth according to one of claims 1 to 8, characterized in that one of the felt layers consists of polymeric tertiary staple fibers, in particular of a thermoplastic and absorbent secondary staple fibers, and the other layer of felt by staple microfibers and secondary absorbent staple fibers. Cleaning cloth according to one of Claims 1 to 9, characterized in that the felt layer of polymeric tertiary staple fibers and abosorbent secondary staple fibers forms an intermediate layer, which on its sides is enclosed in each case by a layer of felt of cut microfiber cover and secondary absorbent staple fibers. £ ^ í > _, ' 11. Cleaning cloth according to one of claims 8 to 10, characterized in that the secondary staple fibers were incorporated by beating the layer of tertiary staple fibers into the microfiber layer 5 cut. Cleaning cloth according to one of Claims 1 to 11, characterized in that the felt layers are joined to each other by shaking, swirling or rolling. The cleaning cloth according to one of claims 1 to 12, characterized in that the felt layers are joined to one another by welding points. Cleaning cloth according to one of claims 1 to 13, characterized in that the layers of 15 individual felt are reinforced by fusion zones, using heat and pressure. Cleaning cloth according to one of the claims 1 to 14, characterized in that the surfaces of the cleaning cloth are reinforced by 20 melting zones, in particular by calendering. 16. Cleaning cloth according to one of claims 1 to 15, characterized in that the cleaning cloth has a surface weight of 75 to 250 g / m2, preferably 120 to 180 g / m2. 25 17. Cleaning cloth according to one of the claims 1 to 16, characterized in that in the case of a three-layer cleaning cloth consisting of an intermediate layer of tertiary staple fibers and secondary staple fibers and two cover layers of staple microfibers and secondary staple fibers, the surface weight of the layer intermediate is from 40 to 80% of the total surface weight. 18. Cleaning cloth according to one of claims 1 to 17, characterized in that the surface weights of the cover layers are the same. Cleaning cloth according to one of claims 1 to 18, characterized in that the proportion of cut microfibers exceeds the proportion of secondary staple fibers in the cover layer (s). 20. Cleaning cloth according to one of claims 1 to 19, characterized in that the proportion of microfibers cut in the covering layer (s) is from 70 to 98%, preferably from 70 to 80%. 21. Cleaning cloth according to one of claims 1 to 20, characterized in that the proportion of secondary staple fibers exceeds the proportion of tertiary staple fibers in the intermediate layer. 22. Cleaning cloth according to one of claims 1 to 21, characterized in that the proportion of secondary fibers cut in the intermediate layer is from 70 to 100%, preferably from 70 to 80%.