Multicomponent fibers and non-woven materials, collapsing under the action of water

 

(57) Abstract:

Describes multi-component fibers, in which at least one component will provide the binding fibers with each other and with other types of fibers and in which the first component can also be destroyed in the aquatic environment. Such fibers can be used for formation of the fibrous nonwoven materials, which can be used as component parts in such finished products as items health purposes, towels and absorbent articles for personal hygiene. Technical result: the ability to delete items after use of alternative existing methods. 10 C. and 5 C.p. f-crystals, 3 ill., table 1.

The invention relates to multicomponent fibers. More specifically, the present invention relates to a multicomponent fibers, including bicomponent fibers that have at least one component that will allow you to bind the fibers to each other and with the fibers of other types, and in which the same component, also destroyed in the aquatic environment. Such fibers can be used for formation of the fibrous nonwoven materials and can be applied as an integral Casteau products of personal hygiene, as for example, diapers, training tights, clothing used for incontinence, sanitary napkins, dressings, etc.

Solid waste disposal is becoming a more acute problem throughout the world. As continues filling landfills, there is an urgent need to reduce the percentage of material removed in the products, the introduction in the deleted items more components suitable for processing with the purpose of reuse, and the creation of products that could be removed by other means than the direction in designated solid waste disposal, such as landfill.

One of the products to which special attention was given in relation to solid waste disposal are diaper a single use. In the United States most diapers are thrown in landfills. Other proposed methods of removal include the manufacture of the diaper in whole or in part so that they can be washed into the sewer system, and/or manufacture of their components more compatible with developing methods of preparation of composting and biological treatment.

Diaper and poiny and outer plates of some type to prevent contamination of clothing of the person, wearing clothes. Facing toward the body of the sheath and the outer sheath in most cases are made of fibrous non-woven materials and/or films, which are made from thermoplastic polymers, such as polyolefins or polyesters.

Known multicomponent fiber containing the first component and at least a second component containing a thermoplastic polymer, the first component forms an exposed surface on at least part of the fiber and contains thermally link the polymer and, in addition, dispersible in water, the polymer (U.S. patent 4966808, class D 02 G 3/02, 1990).

From the same patent known non-woven material containing a lot of multicomponent fibers containing the first component and at least a second component containing a thermoplastic polymer, the first component forms an exposed surface on at least part of the fiber and contains thermally link the polymer and the polymer dispersible in water.

Known absorbent articles for personal hygiene, containing the absorbent element of the non-woven fibrous material containing conjugate fiber consisting of two parts, which differ from each other, whereas the 16.08.90).

Known towel containing nonwoven material of bulk fibers (patent EP 0484101, class B 32 B 5/26, 06.05.92).

Also known a number of products-diaper containing non-woven material (patent DE 3822527, class A 61 F 13/13, 1990).

Known training tights from fibrous material (U.S. patent N 5119644, CL A 41 D 1/08, 1992).

From U.S. patent N 4938753, class A 61 F 13/16, 1990-known item of clothing, non-woven fabric (pants).

Known sanitary napkin containing absorbent layer of nonwoven material (U.S. patent N 4341207, class A 61 F 13/13, 1982).

Famous strip containing a non-woven material (U.S. patent N 5013309, class A 61 F 13/15, 1991).

Also known dressings containing non-woven material (patent EP 0094755, class A 61 L 15/06, 23.11.83).

However, these articles, especially diapers, should generally have a fairly high degree of integrity to remain intact during their use. However, this same integrity makes their removal, for example by flushing the toilet, just much more difficult.

The technical task of the invention is the creation of materials, components and structures of the products that would do such things once asplenia, for example, flushing the toilet, preparation, composting and biological treatment.

This object is achieved in that in a multicomponent fiber containing the first component and at least a second component containing a thermoplastic polymer, the first component forms an exposed surface on at least part of the fiber and contains thermally link the polymer and, in addition, dispersible polymer in water, dispersible in water, the polymer of the first component is stable in the presence of fluids with a high concentration of cations and dispersed in solutions with low concentrations of cations.

Multicomponent fiber may have a cross-sectional shape with a shell and a core, the first component forms the sheath.

Multicomponent fiber may have a cross-sectional shape with the location side by side.

The second component may be a thermoplastic fibre-forming polymer, and thermoplastic fibre-forming polymer may be a polyolefin, or a complex of the polyester.

The above objective is also achieved due to the fact that non-woven material that contains many EAI component, containing thermoplastic polymer, the first component forms an exposed surface on at least part of the fiber and contains thermally link the polymer and, in addition, dispersible polymer in water and dispersible in water, the polymer of the first component is stable in the presence of fluids with a high concentration of cations and dispersed in solutions with low concentrations of cations.

In addition, the absorbent personal care product containing a non-woven material, used non-woven material that contains many fibers, and at least part of the fibers are fibers containing the first component, and at least a second component containing a thermoplastic polymer, the first component forms an exposed surface on at least part of the fiber and contains thermally link the polymer and, in addition, dispersible in water the polymer, and dispersible in water, the polymer of the first component is stable in the presence of fluids with a high concentration of cations and dispersed in solutions with low concentrations of cations.

Next, towel, containing non-woven material, used non-woven material, the content is the least the second component containing a thermoplastic polymer, the first component forms an exposed surface on at least part of the fiber and contains thermally link the polymer and, in addition, dispersible polymer in water and dispersible in water, the polymer of the first component is stable in the presence of fluids with a high concentration of cations and dispersed in solutions with low concentrations of cations.

Also in the diaper containing non-woven material, used non-woven material that contains many fibers, and at least part of the fibers are fibers containing the first component and at least a second component containing a thermoplastic polymer, the first component forms an exposed surface on at least part of the fiber and contains thermally link the polymer and, in addition, dispersible polymer in water and dispersible in water, the polymer of the first component is stable in the presence of fluids with a high concentration of cations and dispersed in solutions with low concentrations of cations.

Further, in the training tights from fibrous material, the fibrous material contains non-woven material is ponent and at least a second component containing a thermoplastic polymer, the first component forms an exposed surface on at least part of the fiber and contains thermally link the polymer and, in addition, dispersible polymer in water and dispersible in water, the polymer of the first component is stable in the presence of fluids with a high concentration of cations and dispersed in solutions with low concentrations of cations.

Next, garment, non-woven fabric for use in incontinence contains non-woven material that contains many fibers and at least part of the fibers are fibers containing the first component, and at least a second component containing a thermoplastic polymer, the first component forms an exposed surface on at least part of the fiber and contains thermally link the polymer and, in addition, dispersible in water the polymer, and dispersible in water, the polymer of the first component is stable in the presence of fluids with a high concentration of cations and dispersed in solutions with low concentrations of cations.

In addition, in the sanitary napkin containing necn are fiber, containing the first component and at least a second component containing a thermoplastic polymer, the first component forms an exposed surface on at least part of the fiber and contains thermally link the polymer and, in addition, dispersible polymer in water and dispersible in water, the polymer of the first component is stable in the presence of fluids with a high concentration of cations and dispersed in solutions with low concentrations of cations.

Further, in the gasket containing non-woven material, used non-woven material that contains many fibers, and at least part of the fibers are fibers containing the first component and at least a second component containing a thermoplastic polymer, the first component forms an exposed surface on at least part of the fiber and contains thermally link the polymer and, in addition, dispersible polymer in water and dispersible in water, the polymer of the first component is stable in the presence of fluids with a high concentration of cations and dispersed in solutions with low concentrations of cations.

Further, in the dressing material containing nonwoven mutsa fiber, containing the first component, and at least a second component containing a thermoplastic polymer, the first component forms an exposed surface on at least part of the fiber and contains thermally link the polymer and, in addition, dispersible polymer in water, dispersible in water, the polymer of the first component is stable in the presence of fluids with a high concentration of cations and dispersed in solutions with low concentrations of cations.

A brief description of the drawings.

Fig. 1 is a view in cross section of a two-component fiber with a concentric arrangement of the shell and the core according to the present invention.

Fig. 2 is a view in cross section of a two-component fiber with an eccentric sheath and core according to the present invention.

Fig. 3 is a view in cross section of a two-component fiber with the location side by side according to the present invention.

The invention relates to multicomponent fibers, such as bicomponent fiber containing the first component and the second component. Only for illustrative purposes the present invention will be described in relation to duhk the two or more components, and thus, "multicomponent fibers. The first component performs at least two functions. First, it creates an open portion on the surface of the bicomponent fiber, which will provide thermal binding fibers with other fibers, which can be the same with the fibers of the present invention or different from them. Secondly, the first component of the bicomponent fiber according to the present invention must be capable of break down when placed in an aqueous environment. In the two-component fiber according to the present invention can be used for the formation of thermally connected fibrous nonwoven materials. In addition, when the material is exposed to the water environment, for example, the water in the bowl, the connection between the fibers generated by the first component will decay to a degree sufficient to break these bonds and, consequently, loss of fibrous nonwoven material of his integrity and disintegration into smaller parts or individual fibers.

The second component is the other of fibre-forming polymer, which is able to disintegrate in an aqueous environment to a lesser extent than the first component, or totally not on the Sabbath.) the resulting non-woven material.

In Fig. 1 - 3 show the two-component fiber 10 according to the present invention, which can have two or more components including a first component 12 and second component 14 from which the first component is "vodorazreshimye". This means that when the first component 12 of a two-component fiber 10 is exposed to aqueous fluids, including ordinary water, for example, already in the bowl, or water mixture, to which may be added to the buffer, alkaline or acidic components or complexing agents, the bond formed between the fibers of the first component will be sufficiently weakened so that the fibers began to be separated from each other by yourself or, if required, under stirring. For binding the fibers of the first component 12 has a melting point or softening of lower than the melting point or softening of the second component. In addition, as shown in Fig. 1 to 3, the first component forms at least part of the surface of the fiber 10, usually along the longitudinal axis of the fiber 10. Among the shapes of cross-section fibers, which provide such an exposed surface on which gavini, for example, as shown in Fig. 1, form an eccentric sheath and core, for example, shown in Fig. 2, and form with the location side by side, for example, shown in Fig. 3. In the first component is used as a binder means for binding together the fibers, while the second component provides structural rigidity of the fiber and the resulting non-woven material.

The second component 14 is a polymer which has a higher melting point or softening than the first component 12, so that during thermal binding together two fibers of the first component 12 would serve as the main tool for the formation of ties between the fibers. To accomplish this, it is normally desirable that the second component had a melting point/softening, which, at least at the 10oC above the melting point/softening of the first component 12. The polymer or mixture of polymers, which by their nature are relatively crystalline, will have, or a specific melting point, or a very narrow range of melting temperatures. Other polymers is more amorphous and will melt or soften in the broader which of you can determine using differential scanning calorimetry (DSC) according to test method E-794-85 American society for testing and materials. For polymers that are more amorphous, temperature, or temperature range of the melting point for the specific polymer, copolymer or mixture of polymers can be determined using test method D-1525 (1993) American society for testing and materials. Thus, when selecting polymers for receiving the first and second components, the upper limit of the temperature range of the melting or softening of the first component 12 should be at least 10oC below the lower limit of the temperature range of the melting or softening of the second component 14. As a result, when the binding component fibers between a majority of interfiber ties will be formed the first component, and not a second component, provided that the temperature/conditions binding is not in the range of the melting temperature of the second component. Examples of polymers that are typically used as the core or the second component include, but are not limited to, polyesters, and polyolefins, such as polyethylene and polypropylene. Prom from the viewpoint of adhesion, to prevent unwanted separation of the two components from one another formed in the fiber 10. This is especially true for fiber positioning components side by side, where is little or no sealing one component to another, as in the case of fibers with eccentric and concentric with the location of the shell and the core.

The material selected for formation of the first component 12, it will usually be more expensive than the second component 14. Therefore, to reduce costs, it is desirable in the formation of fibers to use as little of the first component. For further cost reduction may be desirable to use other, less expensive fibers in the fibrous non-woven material containing a two-component fiber according to the present invention. Therefore, when mixing of the fibers of the fiber should be selected such that, among all polymer fibers used in the nonwoven material, the first component of the bicomponent fiber according to the present invention would have the lowest melting point/softening.

As mentioned earlier, the first component must be a material which is capable is to described earlier, should also have the ability to collapse under the action of water. Many polymers are capable of break down in essentially ordinary water, e.g. tap water, which usually has a pH in the range of from about 6.5 to about 8.5. Thus, if the fibrous non-woven materials will be manufactured using destructible under the action of the water-component fibers according to the present invention, then they are very likely to be suitable for applications in which they will be exposed to very small quantities of water or be its total absence. In these cases, after use can be placed in water that were possible destruction of the membranes and the separation of the fibrous non-woven material. In other cases, the application of fibrous non-woven materials, which are destroyed under the action of the water-component fiber according to the present invention, may at the time of their application be exposed to significant quantities of aqueous liquids, so that the first component would begin to deteriorate prematurely and separated. Examples of such products that may be so affected, are absorbent prod the breeches and towels. To solve or mitigate this problem for the first component you can select polymers that are prone to collapse or be destroyed due to changes in pH, changes in the concentration of soluble ions and/or temperature changes in the aquatic environment.

As further described below, certain polymers of the first component are destroyed by water only when they are exposed to sufficient quantities of water in a certain range of pH. Outside this interval, they will not be destroyed. Thus, it is possible to choose sensitive to the pH of the polymer of the first component, which is indestructible in an aqueous liquid or liquids in the same interval of pH, e.g. a pH of 3-5, but which becomes collapsing in the range of pH ordinary tap water. See, for example, U.S. patent N 5102668 in the name of Acela and others, which is included as a reference.

Another mechanism that may be used for the emergence of destructible under the action of water, is the sensitivity to ions. Certain polymers contain components based on the acid (R-COO), which are held together by hydrogen bonds. In the dry state, these polymers remain solid. In oddbody to remain relatively intact. However, if the same polymer later to expose more water with low content of ions, for example, that will be in the bowl, the concentration of cations will be reduced and the hydrogen bonds begin to break. If this happens, then the polymer will break down in water. See, for example, U.S. patent N 4419403 on the name of Verona included as a reference.

Another means of making the polymer's ability to break down in water is temperature change. Certain polymers have turbidity. As a result, these polymers will precipitate out of solution at a certain temperature - temperature opacities. These polymers can be used to form fibers that are insoluble in water above a certain temperature, but which become soluble and, therefore, collapsing in the water at a lower temperature. In the result, it is possible to choose or to admix the polymer, which will not deteriorate in the excreted body fluids, e.g. urine at body temperature (37oC) or at a similar temperature, but which will disintegrate when placed in water with a temperature equal to room temperature (23< what is turbidity, 34oC. When the polymer is subjected to the action produced by the body fluids, e.g. urine at a temperature of 37oC, it will not collapse, since this temperature is above its cloud point (34oC). However, if the polymer is placed in water with room temperature (23oC), the polymer will fall back into the solution, because now he will be exposed to water with a temperature below its cloud point. Therefore, the polymer will begin to crumble.

The polymer of the first component can be classified according to the mechanism by which they are sustained in certain liquid media. These ambient conditions are: water or excreted by the body of liquid in a small volume, adjustable pH conditions (for example, existing solutions for storing wet rags or systems with a buffer additive), solutions with a high concentration of cations (urine of children or adults and menstrual fluid) and variable temperature conditions (for example, from body temperature to room temperature or colder water).

Refer to table 1, where examples of polymers for the first component, habit is Isom incontinence and towels for children or adults) could be polyamides brands NP2068, NP2074 or NP2120 supplied by the company "X. B. fuller company, Vadnais heights, PCs Minnesota, USA. Materials produced by "fuller" is aliphatic polyamides, which are completely soluble in cold water and molding the fiber is very similar to the high-pressure polyethylene. Other polymers that can break down in water or mixtures in water and latrines are graft copolymers of polyvinyl alcohol supplied by the company Nippon Synthetics of Camel company, Ltd. ", Osaka, Japan under the designations "Ecomate" AX2000, AX10000 and AX-300G. The polymers produced by Nippon dissolve in cold water, but at a slightly lower speed than the polymers produced by "fuller". Another polymer for the first component could be amide block copolymer of polyether with the designation "Pebax" MX1074 supplied by the company "Atoken" (USA), located in Philadelphia, pieces Pennsylvania. The polymer "Pebax" MX1074 consists of epsiloncaprolactam (Nylon 12) and tetraethyleneglycol monomers. These monomers are polymerized to form the rows amide block copolymers, polyether. The polymer "Pebax" is not soluble in water, but swells in it and so could well be used in an environment with a larger volume than the softening temperature or melting point above, at least at the 10oC, as in the case of polypropylene. Polymers "Nippon" or "Atoken" can be combined with the polymer for the second component with a higher temperature melting point, as for example, polypropylene or polybutylene terephthalate.

Polymers for the first component, which is stable in a certain range of pH, for example, from pH 3-5, could be copolymers of acrylic ester/acrylic or methacrylic acid and a mixture of labeled N-10, N-10 or X-10, supplied by the firm "Findley Adhesive, Inc., Milwaukee, PCs Wisconsin, USA. Materials "Findlay" stable under the pH conditions of the body or when they contain a buffer against secreted by body fluids), but will disintegrate in water in the toilets during the process of flushing (excess water), increasing thus the pH to neutral values. Polymers Findley" can be combined with the polymer for the second component, with the interval of a higher melting temperature, such as polyethylene or polypropylene.

Polymers for the first component, which is stable in the environment, solutions with a high concentration of cations (for example, the urine of children or adults and menstrual fluids) could be letting down of the sport, PCs Tennessee, USA. Polymer "Eastman" AQ38 get out of 89 mole percent isophthalic acid, 11 mole percent of sulfoisophthalate sodium, 78 mole percent diethylene glycol and 22 mole percent 1,4-cyclohexanedimethanol. It has a nominal molecular mass equal to 14000 daltons, an acid number less than two, a hydroxyl number less than 10 and a glass transition temperature 38oC. Other examples could be a mixture of polyvinyl alcohol or copolymers of polyvinyl alcohol with acrylic or methacrylic acid or a mixture of simple polivinilovogo ether with acrylic or methacrylic acid. Polymers "Eastman" sustainable environments from solutions with high concentrations of cations, but will quickly deteriorate in the water in the toilet during the process of flushing (excess water), reducing, thus, the concentration of cations. Polymers "Eastman" can be combined with the polymer for the second component, with the interval of a higher melting temperature, for example, polyethylene.

The polymer for the first component, which is stable under the conditions of body temperature (i.e., at a temperature of 37oC) can be any polymer that has a "turbidity" at body temperature or prasnam property to "trigger" changes in physical condition, for example, the solubility in water. For example, a simple polivinilbutilovy ether has a turbidity equal to the 34oC, above which it is no longer water soluble, but at room temperature (approximately 23oC) he is able to completely collapse under the action of water. A mixture of simple polivinilovogo ether can be considered as good. Simple polivinilbutilovy ether may be combined with polymers for the second component, with the interval with the higher melting temperature, such as polyethylene.

Methods of making bicomponent fibers are well known and do not require a detailed description. In General, for forming a two-component fiber separately ekstragiruyut two polymer and applying them to the distribution system of polymers, where the polymer is injected into the die plate segment. The polymers separate ways to follow filiere and unite in filiere, which contains either two concentric circular openings, providing, thus, the formation of fibers with cladding and core, or one round hole, divided by diameter into two parts for the formation of fibers with the location of components side by side. Consolidated polymer fiber is tra fiber and collect. Further, the fiber is subjected to cold drawing" at a temperature below its softening temperature to the desired final diameter of the fiber, give the tortuosity (texturing and cut into desired pieces). Bicomponent fibers can be cut into relatively short lengths, for example, staple fiber, which is usually segments within a 25 - 51 millimeters (mm), and for short periods, which are even shorter and have a length of less than 18 mm. See, for example, U.S. patent N 4789592 in the name of Taniguchi and al. and U.S. patent N 5336552 on the name of Straka and others, which are both incorporated by reference.

Fibrous non-woven materials can be made entirely of fibers according to the present invention or a mixture of these fibers with other fibers. The length of the fibers will depend on the specific final destination. If the fibers are intended for destruction in water, for example, in the lavatory, it is useful to have sections of fibers with a length of about 15 millimeters (mm) or less.

Two-component fiber according to the present invention, is able to collapse under the action of water, can be used for formation of the fibrous nonwoven materials for a number of applications. Therefore, PR

In the number of absorbent articles for personal hygiene includes such items as diapers, training breeches, articles for feminine hygiene, such as sanitary napkins, pads and tampons, clothing and tools to use for incontinence, ostomy supplies, etc., the Most common structure of all such products includes facing the body of the lining, the outer lining and located between the absorbent core. Converted to body lining and the outer lining is usually sealed at their periphery for sealing the absorbent core and, consequently, make it possible to capture and hold any liquids contained in the absorbent core. Depending on the structure of a specific absorbent articles for personal hygiene it may also include other components. Thus, the product may contain details such as the elastic side strips, wings for containing fluid, the mounting means and the other layers of materials for the transfer or retention of fluid. In the case of their suitability fibrous nonwoven materials of the component fibers, collapsing under the action of the water can be used for education or slow according to the present invention includes, but not limited to, wipes for wet and dry cleaning, clothing and any other non-woven or composite materials which could be useful capacity of destruction under the action of water.

Having described thus different parameters of the present invention, produced several samples of two-component fibers and nonwovens, collapsing under the action of water.

Example 1.

In example 1, a two-component fiber with cladding and core, collapsing under the action of the water were made using a core of low pressure polyethylene shell of complex sulfonated polyester in a weight ratio of 50/50. The polymer core was low-pressure polyethylene TNL 1961 from Neste Oy, Espoo, Finland, with an interval of the melting temperature of 140 - 150oC. the Polymer shell was difficult sulfonated polyester AQ38S from the company "Eastman of Camel company, Kingsport, PCs Tennessee, USA, with an interval of melting point 120 - 130oC. the Fibers were made by using a line for the production of two-component fibers, the initial diameter of the fibers in 6 decitex (decitex) and then subjected to cold drawing when temperature is Idanha them tortuosity, using the camera to make the fiber crimp, and cut into segments with a length of 6 mm was also Used for the finishing of pure isopropyl myristate.

After you have formed fiber, then put the air way at a weight ratio of 50/50, based on the total weight of the material with the fibrous non-woven fabric had a basis weight of 25 - 30 grams per square meter (g/m2in combination with one of the other three types of fibers with a diameter of 1.7 dtex and a length of 6 mm, the three other types of fibers were polyester fiber from DuPont Fiber company, Wilmington, pieces of Delaware, USA, polyester fiber from EMC Grilon", Domat/EMS, Switzerland, and staple fiber from Courtaulds, Ltd., Coventry, England. In all three materials fibers bound together using a two-step binding process. At the first stage of production of material from a mixture of staple fibers and collapsing under the action of water bicomponent fiber was connected by passing in a stream of air at a temperature of 132oC, after which he made a point linking at a temperature of 90oC, using two fluted bonding roll with a surface binding about 15 pretentiousness at similar temperatures, but the binding of the fibers in the material containing polyester fibers "DuPont", could not be conducted due to excessive shrinkage polyester fibers. Fiber two other materials that were not associated, formed by interfiber component membrane complex sulfonated polyester. When the materials were placed in water at room temperature, the connection between the fibers was destroyed and the materials dissolved.

Example 2.

In example 2 was formed into a second fiber cladding and core, which could collapse under the action of water and in which the core was made of polymer polybutylene terephthalate "Vestodur 1000" from Hulls, GmbH" - branch of "Web AG, düsseldorf, Germany. This polymer had a melting point of 250oC. Shell, able to collapse under the action of the water, was made of polyvinyl alcohol "AX2000 from Nippon Synthetic of Camel company, Ltd., Osaka, Japan, which had a melting point equal to 225oC. As in example 1, the weight ratio of polymers in the shell and the core was equal to 50/50. Fiber is initially pulled up to 14 decitex and then subjected to cold drawing to 5 dtex at a temperature of 130oC. After oinoi 6 mm The fibers used the same finishing of isopropyl myristate.

Collapsing under the action of the water-component fiber with cladding and core again mixed with polyester fibers "EMC Grilon and staple fibers "Courtaulds" similar to that used in example 1, with the formation of a 50/50 wt.%-different mixtures of polyester fibers, bicomponent fibers, staple fibers, bicomponent fibers. Two materials, air laid method, had a basic weight between 25 and 30 g/m2. The binding fibers of the two materials was unsuccessful due to the limitations of the equipment. Despite this, the shell component fibers made of polyvinyl alcohol, when placed in the water were destroyed and become slimy.

It is clear that, with such a detailed description of the invention, it is possible to make various modifications and changes in the present invention, without deviating from its essence and does not extend beyond the limits of the following claims.

1. Multicomponent fiber containing the first component and at least a second component containing a thermoplastic polymer, the first component of obrazu the CSOs, dispersible in water, a polymer, wherein the dispersible in water, the polymer of the first component is stable in the presence of fluids with a high concentration of cations and dispersed in solutions with low concentrations of cations.

2. Multicomponent fiber under item 1, characterized in that it has a cross-sectional shape with a shell and a core, the first component forms the sheath.

3. Multicomponent fiber under item 1, characterized in that it has a cross-sectional shape with the location side by side.

4. Multicomponent fiber under item 1, characterized in that the second component is a thermoplastic fibre-forming polymer.

5. Multicomponent fiber according to p. 4, characterized in that thermoplastic fibre-forming polymer is a polyolefin.

6. Multicomponent fiber according to p. 4, characterized in that thermoplastic fibre-forming polymer is a complex polyester.

7. Non-woven material that contains many fibers, characterized in that at least part of the fibers are fibers under item 1.

8. Absorbent personal care product containing a non-woven material, the ex is, trichomania that used non-woven material under item 7.

10. Diaper containing non-woven material, characterized in that used non-woven material under item 7.

11. Training tights from fibrous material, wherein the fibrous material contains non-woven material under item 7.

12. Garment, non-woven fabric, characterized in that for use in incontinence contains non-woven material under item 7.

13. Sanitary napkin containing non-woven material, characterized in that used non-woven material under item 7.

14. Strip containing a non-woven material, characterized in that used non-woven material under item 7.

15. Dressings containing non-woven material, characterized in that used non-woven material on p. 7.

 

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