TR201815970T4 - Bicomponent fiber for the production of spun wool. - Google Patents

Abstract

The invention provides a bicomponent fiber (1) for the production of spun wool (4) having a first component (2) and a second component (3), in which the first component (2) as a basic part is a first polymer and a second component is a second polymer. ) is about. According to the invention, the first component (2) is intended to have an additive wherein the mass ratio of the additive in the second component (3) is less than that in the first component (2).

Description

DESCRIPTION BICOMPONENT FIBER FOR SPINNED WOOL PRODUCTION The invention is a first component and a second component. The component has a first polymer and a second polymer as the basic part. the component has a second polymer and the first component especially spun wool production, where it surrounds the second component for a bicomponent fiber.

The invention also has at least one bicomponent fiber of the specified type. It relates to a spun wool.

Bicomponent fibers of the specified type are generally a first polymer to a first component and a second polymer to a second has a component.

Here the different characteristics of the components in the fiber cross-section various types of bicomponent fibers with distributions may differ.

The first component surrounds the second component in the fiber cross-section. and adjacent bicomponent fibers core-coating fiber is defined as.

In the fiber cross-section of both the first component and the second component bicomponent fibers of which the upper surface of the fiber forms a part It is defined as side-by-side fiber.

Many bundles of one* component to one bundle of another component so that in cross section there are many more than one* component. a scene in which an image resembling formed islands appears. Fibers with this structure are known as Island-in-the-Sea fiber.

A large number of relevant component areas are present in the cross section. and bicomponent fibers of which outer fiber upper surface is formed, each a pie-piece-like distribution in a component cross-section It is defined as Segmented-Pie fiber because it has

In the current application framework, it is more than two-component fiber. fibers with more components should also be understood.

The purpose of bicomponent fibers is to change the fiber properties or the fiber. to improve the spun wool properties produced is to bring.

The properties of a spun wool depend on many factors.

One of the factors affecting the properties of a spun wool are the properties of the fiber used, For example, the strength of the fiber.

A well-known and at least an accepted theory, bicomponent properties of the resulting bicomponent fiber a combination of the properties of each component of the fiber it describes, where the properties of each component are possible properties of both components in bicomponent fiber integrated in a way that combines its advantages. For example, both high durability and wool production exhibits an advantageous behavior when connecting fibers one after the other. If a fiber is desired, a first component with high durability is better. combined with a second component with bonding capability should be done.

In order to improve the properties of the bicomponent fiber, the polymer additives are often added.

There are various substances in the additives.

These include, for example, coloring, thermo stabilization, flame retarding, hydrophilizing, hydrophoblasting or UV provides stabilization.

Here the additives are regularly evenly distributed over the phases.

However, the disadvantage in the use of these additives is especially when the contribution exceeds a certain total concentration limit. adversely affect the production process.

In addition, additives exceed a certain total concentration in the fiber. may be harmful to health or the environment. A bicomponent fiber for which it is predicted is described.

EP O 089 113 A2, various flame retardants in coating provided, melt spinning, melt bonding core- It is related to coating or Side-by-Side-bicomponent fiber. polystyrene particles and a compression material a melt spinning, core-coating-bicomponent fiber is known.

From WO 99/41438 only polyester coating is a biocide Contains a polyester-core-coating-bicomponent fiber known.

The object of the invention is in particular to produce a spun wool. the negative effects of the addition of bicomponent fiber and additives. occur in the absence of, or at least to a reduced extent, output and the desired effect of the added additive is achieved. using a spun wool with little bicomponent fiber is to present.

of independent claims in accordance with the invention for the stated purpose with a bicomponent fiber and spun wool has been reached.

Features of dependent claims in advantageous application forms are given.

According to the invention, the first component properties are affected or has a contribution to improve.

Here preferably the contribution of the first component is in the second component. mass ratio is the maximum of the additive mass ratio in the first component. more than 33.3%.

Preferably, here the mass fraction of the first component in the bicomponent fiber at most 50%, preferably 25%, particularly preferably 10% and particularly preferably 5%.

Here, the first component of the bicomponent fiber forms the coating. It is particularly preferred that it be a core-coating fiber.

Contributions of the first component surrounding the second component The advantage of being concentrated is an equal or improved in the second component when it is necessary to create an additive effect the amount of additive required is equal to the additive in both components. It can be less than that in the distribution.

In this sense. from the definition of the additive, the resulting fiber or the fiber modifying the properties of the spun wool obtained and so that the polymer in the relevant component for the purpose of improving additional clauses added should be understood.

According to the invention, the additive is a primary or secondary antioxidant, a UV-absorber and/or a UV-stabilizer, i.e. -sterically hindered phenol as primary antioxidant and/or -Organic phosphite and/or as secondary antioxidant - Triazine as UV absorber and/or - Promise sterically hindered amine (HALS) as UV stabilizer subject.

Additives added to the polymer in low concentration for fiber production In terms of principle, it refers to the contamination of the polymer.

In pollution, in principle, fiber is always due to this contamination. risk of changing component behavior during production Therefore, according to experts, bicomponent fiber The unequal distribution of the contributions to its components was first bicomponent fiber quality or production process creates the risk of worsening stabilization.

According to the expert opinion, this additive is in a specific region of the fiber. This is found in a small thickness of the fiber in question.

As with color agents or pigments, by experts It is clear that the additives reach a certain region of the fiber. does not mean. For example, in a flame retardant, the entire fiber is subject to the combustion process.

UV rays also enter the whole life.

Surprisingly, however, in some cases, especially when the contribution is not only reduced but left entirely advantageous results have been obtained.

An advantage of the concentration of the additive in the first component costs due to the low amount of contribution required. is savings.

Advantageously, the bicomponent fiber has another additive, where as additive a flame retardant, an antistatic, a lubricant, a metal deactivator, a hydrophilizing agent, a hydrophoblasting agent, an Antifogging additive and/or a biocide.

The following classes of substances and obtained from the following Mixtures are particularly preferred: -Metal hydroxide, borate, organic bromine as flame retardant or chlorine-containing compounds, organic phosphorus compounds, antimony trioxide, melamine, melamine cyanurate, exfoliant graphite or other intumescent systems.

- As antistatic, quaternary (quaternary) ammonium salt, alkyl sulfonate, alkyl sulfate, alkyl phosphate, dithiocarbamate, alkali metal carboxylate, polyethylene glycol and its ester and ether, fatty acid ester, ethoxylate mono and diglyceride, ethanol amine.

- Fatty alcohol, fatty alcohol ester, oil as lubricant acids, fatty acid ester, dicarboxylic acid ester, fatty acid amide, metal salts of fatty acids, polyolefin resin, natural or artificial paraffin and its derivatives, fluorine polymer and fluorine oligomer, silicic acid, silicon, silicate, calcium carbonate Etc. such as anti block material.

- Amide of mono and dicarboxylic acids as metal deactivators and its derivatives, cyclic amide, hydrazone and bishidrazon, hydrazide, hydrazine, melamine and its derivatives, benzotriazole, aminotriazole in conjunction with complex metal compounds sterically hindered phenol, benzylphosphonate, fridithiol, thiobisphenol - Hydrophilizing - hydrophoblasting or antifogging agent as poly glycol, ethoxylate, fluorine polymer and fluorine oligomer, montane resin, especially stearate.

- As a biocide, N- (trihalogen-methyl thiol)phthalimide, tributyl synoxide, zinc dimethyl dithio carbamate, diphenyl antimony -2-ethyl hexanoate, copper-8-hydroxyquinoline, isothiazolone, silver and silver salt. For example, in a combustion test application in accordance with EN l3501-1 In the inventive distribution of the additive to the components, the flame a positive test as if the retarder is evenly distributed in the fiber low amount of additive to achieve the result, in this example It has been determined that a low amount of flame retardant is sufficient. has been made.

In this test, within moments, the entire fiber is affected by the flame, which Therefore, the advantageous effect is a kind of defense of the coating area of the fiber. does not have an immediate effect.

Advantageously, the melting of the first component and the second component points difference below 8°C or equivalent to 8°C. Stated that the ranges contain any odd ranges or odd values and explained in accordance with the invention when not individually specified. should be taken into account.

In relation to the advantageous selection of melting points Surprisingly, both bicomponent fibers have the same melting point. In bicomponent fibers where it has a point, both components that the synergy effect between the properties can be improved is seen.

This relates specifically to mechanical properties. For example, a bicomponent fiber according to the invention is produced. In the case of spun wool, both the specific breaking force and it is possible to increase the specific nail breaking force. Conventional fibers in accordance with the prior art are spun from these fibers. which increases the specific breaking force in wool production. measures are regularly taken to determine the specific nail breaking strength is accompanied by a decrease.

Conversely, increasing the specific nail breaking force measures to reduce the specific breaking force is happening.

These disadvantageous effects are combined with advantageous bicomponent fibers. It can be avoided or at least reduced.

Positive effects of the present invention in bicomponent fiber production recycled material that can be added to one of the components It also includes an increased ratio of fiber compared to known fibers.

With inventive combined melting points recycled material in the use of components properties of a component resulting from the addition of changes occur much less than known fibers. is seen.

Here preferably lower melting in the cross-section of the fiber The component with the point of the fiber forms the outer surface of the fiber.

High melting component preferably with low melting point surrounds the component with the point.

This advantageous configuration has a low coverage area of the fiber. that the component with fusing allows the material to be firmer. provide stability, as well as spinning stabilization and fiber causes the expansion to improve.

This is due to the softness and/or texture of spun wool. healing, as well as spun fiber or fiber obtained from it causes the curling of the wool to improve.

The first component and the second component in relation to the invention maximum of 6°C or 1°C to the melting point difference between It is advantageous if it is between 8°C, preferably 1°C to 6°C.

Advantages of the present invention in these advantageous parameter fields effect is clearly greater.

Preferably with low melting point in bicomponent fiber the mass ratio of the component is at most 50%, preferably at most 25%, especially preferably 10%, especially 5%.

Here, the bicomponent fiber is particularly preferably a core-coating. fiber, where the component with a low melting point covers the coating creates.

Preferably the first component and the second component Melt-Flow-index difference between 25 g/lO min or less is equal, where the first component and the second component Melt-Flow- index (hereinafter referred to as MFI) below 50 g/1O min or Preferably between the first component and the second component Melt-Flow- index less than or equal to 20 g/10 min, preferably 15 g/1O min and/or MFIs of the first component and the second component 40 g/1O min below or equal to. According to the MFIs criteria of the components, this surprisingly, the advantageous selection of such the same kind of positive with the selection according to the invention according to the points has an effect. measured by temperature. MFI is the melt flow index or Also known as the melt mass-to-flow ratio (MFR).

Melting the research material in a heatable cylinder and ISO by pressing a defined mouth through the test load It is performed according to l133.

MFI for the melt viscosity of the corresponding polymer-containing component is a measure.

Fluidity is the number of monomer units in each molecule of a polymer. to the degree of polymerization equivalent to the average number of it is attached.

The positive effect of the advantageous difference of MFIs is mainly with specific breaking force and specific nail breaking force Both of these reference values of spun wool produced from fiber improved by the advantageous selection of MFIs.

Here it is possible for both reference values to increase simultaneously but one of the two reference values, the other reference value improves without worsening.

This creates a noticeable positive effect on the sensory feature.

Thus, the softness and “textile texture” are not adversely affected. the specific breaking force increases.

Pleasant tactile sensation here from the concept of textile touch should be understood.

Preferably the component with high MFI in bicomponent fiber mass ratio at most 50%, preferably at most 25%, at most 10%, particularly preferably at most 5%.

Here, the bicomponent fiber is particularly preferably a core-coating. fiber, where the component with high MFI covers the coating creates.

Advantageously, the polymer of either component is a It is polymerized with metallocen catalyst and other polymer of the component with a Ziegler-Natta catalyst polymerized and then subjected to a Visbreaking process. Here, the polymer preferably contains a polyolefin, especially polypropylene, polyethylene or its copolymer, or their there is a mix.

The other polymer is preferably polyolefin or a polyolefin. is a copolymer.

Here, when both polymers are made from the same Hmnomer or especially when made from the same monomer in general it is advantageous.

Metallocene catalysts by cyclopentane ligand structurally, containing coordinated transition metals are unitary catalysts. is explained in detail.

References have been made to related publications.

The advantage of these catalysts is that polymers have a narrow molecular weight distribution, is that.

Narrow molecular weight distribution with high breaking width causes wool.

Here, the breaking width is used in tearing a wool sliver. fiber emerging at the maximum breaking force is the expansion.

But first of all, the narrow molecular weight distribution is curved. causes an increase in process safety in wool production.

The frequency of spinning faults such as fiber breakage is reduced.

In addition, a high degree of stretching of the fiber is possible, high spinning the speed is reachable and the reachable equivalent is low.

Here, the lower equivalent of the fiber and/or the yarn obtained from the fiber denotes high thinness.

With Metallocen catalysts or Metallocen catalyst Another advantage of the produced polymers is that the polymer the catalyst residue rate is very low.

The catalyst residue rate in the polymer prevents the contamination of the polymer. and undesirable effects of polymer properties causes it to change.

Thus, for example, color change occurs while processing the polymer. it may come off.

Disadvantage of Metallocen catalysts Ziegler-Natta slightly higher compared to catalysts it is in price.

In addition, wool with the use of Metallocen catalysts In production, the thermal compression of the fiber becomes more difficult.

This results in high crystallinity and durability of single fibers. With the use of Metallocen catalysts that increase with stretching in case of high use of the facilities mentioned it could be.

Ziegler-Natta catalysts are metals of main group elements. containing organic compounds and transition metal compounds heterogeneous mixture catalysts.

As the main group elements, especially the first to the third main Elements up to groupq are used.

The transition metal compounds, especially the nettals of the titanium group, Numerous versions of these catalysts are available.

Ziegler-Natta-catalysts in the framework of the present invention mainly by distinction from Metallocen catalysts is defined.

Ziegler- Natta-catalysts from metallocen catalysts Ziegler- Natta- polymers produced with catalysts metallocen larger molecule than the polymer produced with catalysts It has weight distribution. Particularly, it ensures that the process safety is increased, the fibers are Ziegler-Natta-catalysts to improve elongation Polymers produced with

This additional process is known as “Visbreaking”.

In the visbreaking process, the polymer chain is separated so that the single the molecular weight of the molecules is reduced and the number of molecules Here, the width of the molecular weight distribution also decreases.

Separation of the polymer chain, heat, heat, peroxide or with similar measures.

Examples of such a visbreaking process are US 4,282,076 and US Given in ,723,217.

What does metallocen do with this type of visbreaking? narrow molecular weight of the polymer produced with catalysts dispersion nor the fiber obtained from this polymer stretching can be achieved.

Polymers produced with Ziegler-Natta-catalysts are also Since it is in polymers produced with metallocen catalysts has a higher rate of contamination.

This is used in polymer production with Ziegler-Natta-catalyst. cause a higher rate of catalyst residues in the polymer. where a higher catalyst content is required and added in the framework of the visbreaking process and thus produced which represents an additional source for contamination of the polymer. appear in the excipients.

Following the use of Ziegler-Natta-catalysts The advantage of the polymer produced by the visbreaking process is above all else. First of all, it is affordable and highly available in the market.

Another advantage is that the fiber produced from this polymer has thermal its high connectivity.

Surprisingly, it is used in the production of polymers. advantageous selection through catalysts, the resulting of the relevant catalyst types of bicomponent fibers. allow a combination of the advantages of using It shows what causes it to happen.

Thus, only metallocene catalysts produced cost reduction possible despite the use of polymer fibers where also metallocene catalysts The advantages of its use are also provided.

Also with the use of metallocen catalysts only of the bondability of the fibers according to the fibers from the produced polymer. increase can be achieved.

Preferably, the polymer is combined with a metallocene catalyst. mass fraction of the component to which it is polymerized in the bicomponent fiber not more than 50%, preferably not more than 25%, preferably 10%, especially preferably at most %S.

Here, the bicomponent fiber is particularly preferably a core-coating. is a fiber, wherein the polymer is combined with a metallocene catalyst. The component to which it is polymerized forms the coating.

Preferably in the first polymer and/or the second polymer a polyolefin or a polyolefin copolymer, preferably a polymer and/or copolymer of ethylene, propylene, butylene, hexene or octene and/or a mixture and/or blend thereof. subject.

These polymers are used for the production of bicomponent fibers according to the invention. appears to be particularly appropriate.

From the concept of copolymer in this context, at least two different monomers It should be understood that a polymer produced from the type of copolymer The primary monomer mass ratio for its definition is at least 50%.

Preferably, the bicomponent fiber is a core-cladding fiber, where the mass fraction of the core is 50 to 98%, preferably 60 to 95%, particularly preferably from 70% to 95%, particularly preferably from 80% to This is a core of the advantages of the bicomponent fiber according to the invention. advantage of the core in special sizes when the coating is fiber. appears to occur in mass ratios.

Bicomponent fiber includes a Side-by-Side fiber, Segmented-Pie-fiber or preferably located in the 60:40 to 40:60 area.

The advantages of bicomponent fiber according to the invention in these fiber types Particularly suitable for given component ratios is seen.

In another preferred application form, bicomponent fiber a multi-slice, especially a tetra-slice or tri-slice fiber is present.

These fibers are round because of their cross-section geometry. transverse They offer a higher specific surface than cross-section fibers.

The advantages of the fibers according to the invention in connection with this especially optimized with the bicomponent fiber according to the invention The various properties of the components required are related to the upper surface of the fiber. It is used efficiently when relevant features are available.

Preferably the diameter of the bicomponent fiber is 1 mm to 50 mm, preferably 5 mm to 30 mm, particularly preferably 8 mm to 20 mm are in between.

A bicomponent with fiber diameters found in these advantageous areas synergy of the two-component combination to a particular extent in the fiber appears to have had an effect.

The invention also includes a spunbond having bicomponent fiber according to the invention. It's about wool.

Two characteristics that play a special role in spun wool specific breaking force and specific nail breakage of spun wool is the strength.

Here, high specific breaking force at the desired value reached with high strength fiber.

In this framework, spun wool from the concept of good connectivity While the fiber is bound during the production of the fiber in the spun wool adjusting its mobility as precisely as possible should be understood.

In wool, which depends on the binding strength of the fibers, the fiber adjustment of its mobility, high specific breaking force and It also has a high specific nail breaking force. prerequisite for the production of spun wool.

Weakness of suitable fibers with high durability in application to have binding and fibers with good binding The problem of having low durability arises. can come out.

Therefore, it has both a high specific breaking force and a high a spun wool with specific nail breaking strength The use of a bicomponent fiber in production is significant.

Here, the bicomponent fiber according to the invention in special sizes is a spun wool has high specific breaking strength and high allowing it to have specific nail breaking strength because the bicomponent fibers according to the invention provide a good Optimum in terms of connectivity and high durability can be achieved.

Such a wool fabric produced from the fiber according to the invention has many for application, eg type, hygiene field, automobile industry, clothing, home and technical textiles, and especially construction and It is suitable for application in the field of agriculture.

Possible applications are also in filter, membrane, battery protective layer for laminate and use in separators and It is used as a carrier for layers of all types.

Advantageously spun wool surface weight 1 g/m2 to 300 g/m2, preferably 5 g/m2 to 200 g/m2, particularly preferably 8 g/m2 to 200 g/m2.

High surface weights found in advantageous areas Invention with durability as well as good connectivity suitable bicomponent fiber produced from this fiber in special sizes. high specific breaking strength of wool and at the same time high for use in combination of specific nail breaking force appears to have caused it.

The specific breaking force of advantageously spun wool at least 1.8 N/g in the direction of 0.5 cm and/or at least 1.3 N/g in the transverse direction ° 5 cm, preferably 2.0 N/g in machine direction ° 5 cm and/or transverse at least 1.5 N/g ° 5 cm in the direction, preferably at least 2.2 in the machine direction N/g ' 5 cm, at least 2.0 N/g ' 5 cm in the transverse direction, especially preferably at least 2.4 N/g ° 5 cm in the machine direction and/or transversely direction is at least 1.9 N/g ~ 5 cm.

Here, the machine direction refers to the insertion of the spun wool into the machine during its production. the direction in which it is given, that is, the longitudinal direction of a spun wool band. means.

The transverse direction is perpendicular to the direction in which the spun wool extends straight It indicates the direction in which the yarn is spun, that is, the width of a spun wool band.

Here the specific breaking force is measured according to EN 12311-1.

Bicomponent fiber according to the invention for the production of spun wool for the specific breaking strength of spun wool when used It is seen that the advantageous minimum value is required.

For the specific breaking strength of the bicomponent fiber according to the invention advantageous minimum value, specific nail breaking force allows it to be created without falling disproportionately.

Specific needle breaking force of advantageously spun wool at least 1.0 N/g in the machine direction and/or at least 1.2 in the transverse direction N/g, preferably at least 1.4 N/g in the machine direction and/or in the transverse direction at least 1.5 N/g, especially preferably at least 1.6 N/g in the machine direction and/or at least 2.16 N/g 0 cm in the transverse direction, particularly preferably at least 1.8 N/g in the machine direction and/or at least 2.1 in the transverse direction Here, the specific needle breaking force of the wool strip was previously has damage, i.e. a damage due to the needle hitting the wool the maximum that occurs when breaking a sliver of wool is force.

The specific needle breaking force is measured according to EN 12310-1.

Bicomponent fiber connectivity and firmness according to the invention specific breakage of spun wool when optimized in terms of the specificity of spun wool without losing its strength disproportionately. the minimum value specified for the needle breaking force. appears to be feasible.

Specific advantageous needle breakage specifically mentioned herein advantageous specific minimum rupture indicated by the strength A combination of strength is also possible.

Both these advantageous combinations are in terms of mechanical properties. enabling a spun wool suitable for a multitude of applications. it provides.

Such a spun wool e.g. spun wool band its stability is often possible with a pin, nail or screw. It can be used in construction areas.

Spun wool should not break when fastened to a ceiling, for example.

In addition, the use of this advantageous spun wool as geotextile it is also possible.

Geotextiles, for example, can be caused by pointy stones. It has a high tolerance for damages.

In practice, high specific pin break resistance is often used. appears together with a good textural effect.

Therefore, the softness of this type of spun wool and textile Its touch is also preferred for use in the field of hygiene or medicine.

Combined with high needle breaking force for a good touch The high mobility of each fiber seen is the reason.

Fibers with this feature are also soft and soft in application. It has the feature of having a pleasant touch.

Fiber segment mobility is the movement of the needle moving in the wool. with the expansion of the fiber and the needle does not break immediately. It allows it to “collect” on the needle during its movement.

This is the area of increased fiber tightness, i.e. around the needle. causes a zone of increased resilience.

of the invention in one or more of the specified types yarns with bicomponent fiber or produced from these yarns It is understood that it is also related to the substances.

The invention is particularly suitable for the production of bi-component fiber according to the invention. Inventive bicomponent in an inventive spun wool fiber, especially added to a wool in any form and a product made from interlinked fibers, especially a textile flat product is in question.

The invention also includes production and production of bicomponent fiber according to the invention. for the production of a spun wool from suitable bicomponent fiber relates to the method.

Here, both components of the bicomponent fiber are advantageously melted separately.

The polymer melt thus obtained is the output for the fiber. creates the material.

The resulting melt stream is first transferred to a spinning plate. Gathering is advantageous.

Melt stream spinnerets in a spin plate of this type is given to the bicomponent fiber with

Here, advantageously, the spinning mouths are 0.1 mm to 10 mm, preferably 0.2 mm to 5 mm, particularly preferably 0.5 mm to 3 mm hole diameter.

Spinning mouths located in the specified areas of the hole diameter It is particularly suitable for bicomponent fiber production.

Mechanical elongation of rolled fiber after rolling it is advantageous.

Preferably here the fibers are drawn over the galette.

In galette, synthetic threads and fibers are used in production. and fiber transport and/or elongation and/or thermal There are rollers that provide the process.

Advantageously, here, the cooling rate of the fiber is the temperature of the galette. can be adjusted with

With the defined cooling rate, especially during fiber elongation mechanical properties are improved.

Likewise, advantageously, the air transported through the fiber It is also possible to extend with current.

Preferably, the cooling rate of the fiber here is the temperature of the air stream. and/or the amount of air.

In this context, it is also used as a filament for the production of a spun wool. the crimp of the defined fiber after cooling and elongation is also it is advantageous.

The fibers thus have a random arrangement.

Here, the fiber segments are oriented transversely from the machine direction, so that in total one wool can be obtained in each direction.

The fibers are then placed on a filter band.

After the layer obtained from the fiber in this way, preferably thermal as compressed.

Compression binds the individual fibers together, thus creating a holistic a wool emerges.

Thermal compression here is the introduction of hot air or water vapor It is carried out with, application with polishing is especially preferred. With the use of hot or heated rolling mill from the definition of calendering compaction must be understood.

Advantageous finishing. a smooth and etched roll is done with.

Here the engraved mill is preferably based on mill engraving at least particularly preferably at least 12% and not more than 20%. press created by the surface.

Thus, the binding of the fibers to each other and thus the fibers its mobility is expediently affected.

Here preferably the rolling temperature has a low melting point. no more than 70° C from the melting point temperature of the component, preferably no more than 50°C lower.

With this minimum temperature of the mill, the fibers are well binding is provided.

Here, the rolling pressing pressure is advantageous in the rolling range. form 10 N/mm to 250 N/mm, preferably 25 N/mm to 200 N/mm, particularly preferably 50 N/mm to 150 N/mm. Combination with particularly advantageous temperatures the pressing pressure in the specified advantageous areas. setting is meaningful.

The resulting from the use of these parameter combinations, of the bonding between the fibers, the bicomponent fiber according to the invention A bent that has good mechanical properties when used. appears to cause wool.

The firmness of the fiber layer can alternatively be mechanically applicable.

Here the wool is for example needled or with the help of water flow. is compressed.

Another advantageous alternative is the chemical composition of the fiber layer. is tightening.

Here, a binder fiber is produced by imparting or spraying. available to the layer.

This binder hardens so that the fibers become spun wool. it connects.

Hardening of the binder e.g. annealing, photo induced or moisture induced mains, cooling, a evaporation of the solvent, etc. with precautions it happens.

The features given in a separate paragraph are the main features of the present invention. in combination with his thought, for the realization of the invention without obligatory specifications in other paragraphs given It should be noted that they can be combined.

Also, within all specified and added ranges, all available contains intermediate sections and single values, and that these intermediate sections and single values, these intermediate segments or single values to be considered in accordance with the invention even when it is not specifically stated Other features, advantages and application of the present invention possibilities from the following description of application examples and can be obtained from the figures.

All features described and/or illustrated here individually or in the desired combination, as in the claims or back exist independently of its summary in the statement. creates the subject.

Description of figures: Figure 1 shows an inventive fiber as a core-coating fiber. cross section of an application form of bicomponent fiber its image, Figure 2 shows the invention as a thin-coated core-coating fiber. cross section of an application form of a suitable bicomponent fiber its image, Figure 3 shows the nucleus with an eccentrically arranged nucleus. a bicomponent fiber according to the invention as a coating-fiber cross-sectional view of the other application form, Figure 4 shows an inventive three-dimensional core-coating-fiber. of sliced bicomponent fiber. transverse to another application form cutaway image, Figure 5 shows a part of a bicomponent fiber as 'Side-by-Side-fibre'. cross-sectional view of the other application form, Figure 6, Side-by-Side-fiber with a low proportion of the second component transversely to another application form of a bicomponent fiber. cutaway image, Figure 7, mixed core-coated fiber and Side-by-Side fiber Another application form of a bicomponent fiber as a type cross-sectional view in various areas along Figure 8 shows a part of a bicomponent fiber as a Side-by-Side-fiber. cross-sectional view of the other application form, Figure 9, a Side-by-Side fiber and a core-coating fiber Another type of bicomponent fiber according to the invention as a mixture type cross-sections in various areas throughout the application form, Figure 10, a tri-slice bicomponent as a Side-by-Side fiber cross-sectional view of another application form of the fiber, Figure 11, a tri-slice bicomponent as a Side-by-Side fiber cross-sectional view of another application form of the fiber, Figure 12, Side-by-Side fiber with alternate component arrangement Another application of tri-slice bicomponent fiber cross-sectional view of the form, Figure 13 has the component layout shown in Figure 12. As a by-Side fiber, a tetra sliced bicomponent fiber cross-sectional view of the other application form, Figure 14 is a part of a bicomponent fiber as a Segmented-Pie fiber. cross-sectional view of the other application form, Figure 15 shows an inventive one as Island-In-The-Sea-fiber. cross section of another application form of bicomponent fiber its image, Figure 16 is a bicomponent with a strip type component arrangement. cross-sectional view of another application form of the fiber and Figure 17 is an example of a spun wool according to the invention. shows section.

Figures 1 to 4, 7, 9, and 15 are an exemplary one in accordance with the invention. gives the cross-sectional images of the bicomponent fiber (1).

The bicomponent fibers shown (1) have a first component (2) and has a second component (3).

The core-coating fiber shown in Figures 1 and 4 is here first surrounds the component (2) and the second component (3) and forms the surface.

The bicomponent fiber (1) shown in figures 1 to 3 in cross section at least approximately circular or round It has geometry.

The bicomponent fiber shown in Figure 4, however, has three segments. It has a cross section.

Tri-slice cross-sections of this type are similar to other multi-slice cross-sections. round-shaped cross-section of the fiber as in cross-sections to engage with a larger upper surface than fibers with causes.

The ratio of the component forming the coating is too small, for example about 2%, but with a high coverage rate may be the subject.

This means that the coating does not completely surround the core, on the contrary, it breaks in some areas, so that the core It is the outer surface of the fiber in areas where it forms the outer surface.

This type of fiber is also called "core-coating fiber". Particularly in this type of fibers, which form the broken coating The component covers the outer surface of the fiber in the framework of the present invention. creates.

Figures 5, 6, 8 and 10 to 13 made as Side-by-Side fibers indicates bicomponent fiber.

These Side-by-Side fibers are both of the first component (2) and. in second a part of the outer surface of the bicomponent fiber (I) of the component (3) It is characterized by forming part

Side-by-Side fibers are also shown in Figures 5, 6 and 8 circular or at least nearly circular cross-section. also, Multi-slice cross section as shown in Figures 10 to 13 is also possible.

Which fiber property or wool property is created first component (2) and second component (3) as required can be combined with each other in various spatial arrangements.

Thus, a component as shown in Figure 8 In the example, the second component (3) is bicomponent according to mass ratio. only a low proportion of the outer surface of the fiber (1) can be edited as it will form.

Shown in Figures 12 and l3. like a lot. sliced. bicomponent also in the case of 'fiber' (1). a ` component is the first in the examples shown component (2) of the bicomponent fiber (l) editable fields.

In figures 12 and 13, the first component (2) of the bicomponent fiber (1) is very arranged at the ends of the sliced cross section.

Bicomponent fiber MJ Segmented-Pie-fiber shown in figure 14 was made as

This fiber structure is related to Side-by-Side fiber structure, component (2) as well as the second component (3) bicomponent fiber (1) dis forms part of its upper surface.

The same is true for the first component (2) and the second component shown in Figure 16. where the component (3) changes in a layer structure in cross section This also applies to the bicomponent fiber (1) structure.

The “classic” Side-by-Side of the structures shown in Figures 14 and 16 the difference in their structure from the first component (2) or the second The reason is that it has a large number of fields consisting of component (3).

However, the bicomponent fiber (1) shown in Figure 15 of a core-cladding fiber with the lslands-In-The-Sea structure can be viewed as a modified form, here the second There are many cores from component (3).

Single nuclei from the second component (3) from the first component (2) surrounded by a common coating.

Also, as illustrated in Figures 7 and 9, A mix between core-coating fiber and Side-by-Side fiber form is also possible.

The bicomponent fiber (1) shown in Figure 7 is partly along the fiber. in cross section, the first component (2) is the second component (3) as in core-coating fiber surrounds and alone it forms the outer surface of the bicomponent fiber (1).

Second component (3) bicomponent in other areas along the fiber it forms part of the outer surface of the fiber (1).

The first component (2) is completely in the cross-section of the second component (3). does not surround.

This is also true for the bicomponent fiber (1) shown in Figure 9. valid, this is only the one shown in Figure 7. bicomponent fiber An alternative geometry compared to (1) has.

This type of mixture form is also in the framework of the present application. The component covers more than 50% of the outer surface of the fiber. As long as it forms a core-coating fiber, it is defined as.

In Figure 17, as an example, a plurality of bicomponent fibers (1) is how he creates spun wool (4) is shown.

Here, spun wool has a cross direction (X), a transverse direction (Y) and a longitudinal direction (Z), also known as the machine direction. creates a band. An exemplary spun wool (4) with the help of a calender thermal It is produced from compressed bicomponent fiber (1).

Bicomponent fiber (1), with polypropylene as the first polymer from a first component (2) to a coating and as a second polymer having a core of the second component (3) with polypropylene core-coating fiber.

The surface weight of the spun wool (4) is 70 g/m2.

Mass ratio of the second component (3) in the bicomponent fiber (1) The MFI of the first component (2) in the coating is 30 g/lO min and the MFI of the second component in the core is 25 g/10 min. Contribution bicomponent fiber (1) as a flame retardant (NOR- HALS) has.

Additive concentration first. 1.5% in component and second component Small gas nozzle of spun wool (4) according to EN l3SOl-1 The combustion behavior level in the test is E class.

Another example is spun wool (4) through a calender. It is produced from thermally compressed bicomponent fiber (1).

Bicomponent fiber (1) with polypropylene as the first polymer from a first component (2) to a coating and as a second polymer having a core of the second component (3) with polypropylene core-coating fiber.

The surface weight of the spun wool (4) is 70 g/m2.

Mass ratio of the second component (3) in the bicomponent fiber (1) The first component MFI in the coating is 30 g/lO min and in the core the second component MFI ratio is 25 g/10 min. as an additive bicomponent fiber MJ to a flame retardant (NOR-HALS) has.

Additive concentration is 23% in the first component and in the second component Small gas nozzle of spun wool (4) according to EN l3SOl-1 The combustion behavior in the test is E class stage.

Another example is spun wool (4) through a calender. It is produced from thermally compressed bicomponent fiber (1).

Bicomponent fibers (1) are the first to have PET as the first polymer component (2) to a coating. and as the second polymer. to PET a core having a core from the second component (3) coating is fiber.

The surface weight of the spun wool (4) is 70 g/m2.

Mass ratio of the second component (3) in the bicomponent fiber (1) As an additive, bicomponent fiber (1) is found in an antioxidant (commercial It has the name Irganox 1010, manufacturer BASF).

Additive concentration is 20,15 % in the first component and in the second component Thermal stabilization of spun wool (4). control at l50° C 54% of output value after 3 weeks of storage at temperature to the specific breaking strength of the spun wool (4) has been reached.

Another example is spun wool (4) through a calender. It is produced from thermally compressed bicomponent fiber (1).

Bicomponent fibers (1) are the first to have PET as the first polymer component (2) to a coating and PET as the second polymer a core having a core from the second component (3) coating is fiber.

The surface weight of the spun wool (4) is 70 g/m2.

Mass ratio of the second component (3) in the bicomponent fiber (1) As an additive, bicomponent fiber (1) is found in an antioxidant (commercial It has the name Irganox 1010, manufacturer BASF).

Additive concentration is 20.25% in the first component and in the second component Thermal stabilization of spun wool (4). control at l50° C 61% of output value after 3 weeks of storage at temperature to the specific breaking strength of the spun wool (4) has been reached.

Another example is spun wool (4) through a calender. It is produced from thermally compressed bicomponent fiber (1).

Bicomponent fibers (1) have polyethylene as the first polymer from the first component (2) to a coating and as the second polymer having a core of the second component (3) with polypropylene core-coating fiber.

The surface weight of the spun wool (4) is 70 g/m2.

Mass ratio of the second component (3) in the bicomponent fiber (1) As an additive, the bicomponent fiber (1) is attached to a UV stabilizer. (commercially named Uvinul.

Additive concentration is 20.4% in the first component and in the second component UV resistance of spun wool (4) with free weather conditions control, it was arranged towards the south at an angle of 30° to the base. exit after 16 weeks in free air conditions in the trial The specific breaking force was reached at 59% of the value.

Another example is spun wool (4) through a calender. It is produced from thermally compressed bicomponent fiber (1).

Bicomponent fibers (1) have polyethylene as the first polymer from the first component (2) to a coating and as the second polymer having a core of the second component (3) with polypropylene core-coating fiber.

The surface weight of the spun wool (4) is 70 g/m2.

Mass ratio of the second component (3) in the bicomponent fiber (1) As an additive, the bicomponent fiber (1) is attached to a UV stabilizer. (commercially named Uvinul.

Additive concentration is 20.7% in the first component and in the second component UV resistance of spun wool (4) with free weather conditions control, it was arranged towards the south at an angle of 30° to the base. exit after 16 weeks in free air conditions in the trial The specific breaking force of 72% of the value was reached.

Claims (13)

REQUESTS 1. A first component (2) and a second component (2), especially for the production of spun wool (4), where the first component (2) has a first polymer and the second component a second polymer as the basic part, and the first component (2) surrounds the second component (3). It is a bicomponent fiber (1) with one* component (3), and its feature is; where the mass fraction of the additive in the second ingredient (3) is smaller than that in the first ingredient (2), the first ingredient (2) and the second ingredient (3) having an additive, and the additive - sterically hindered phenol as the primary antioxidant and/or - organic as the secondary antioxidant phosphite and/or - triazine as UV absorber and/or - sterically hindered amine (HALS) groups as UV stabilizer. 2. It is a bicomponent fiber according to claim 1, its feature is; It is characterized in that the mass ratio of the first component in the bicomponent fiber is below 50%, preferably below 25%, especially preferably below 15%, especially below 10% and especially below 5%. 3. Bicomponent fiber according to claim 1 or Z, characterized in that; The mass ratio of the additive in the second component (3) is at most 66.6% of the mass ratio of the additive in the first component (2), preferably not more than 4. A bicomponent fiber according to one of the previous claims. Its feature is; The additive is characterized in that the bicomponent fiber has another additive, in which it is a flame retardant, an antistatic, a lubricant, a metal deactivator, a hydrophilizing agent, a hydrophoblasting agent, an Anti-Fogging additive and/or a biocide. 5. A bicomponent fiber according to one of the previous claims. Its feature is; additive: metal hydroxide, borate, organic bromine or chlorine-containing compounds, organic phosphorus bond, antimony trioxide, melamine, melamine cyanide, exfoliant graphite or other swelling systems, quaternary ammonium salt, alkyl sulfonate, alkyl sulfate, alkyl phosphate, dicarbonate , alkali metal carboxylate, polyethylene glycol and ester and ether, ethoxylate, mono and diglyceride, fatty alcohol, fatty alcohol ester, fatty acids, fatty acid ester, dicarboxylic acid ester, fatty acid amide, fatty acids metal salts, polyolefin resin, natural or artificial paraffin and its derivatives, fluorine polymer and fluorine oligomer, antiblock material such as silicic acid, silicon, silicate, calcium carbonate, mono and dicarboxylic acid amide and derivatives, cyclic amides, hydrazone and bishidrazon, hydrazide, hydrazine, melamine and its derivatives, benzotriazole, aminotriazole, sterically hindered phenol linked with complex metal bonds, benzylphosphonate, fridithiol, thiobisphenolester, polyglycone, ethoxylate, fluorine polymer and fluorine oligomer coat an resin, especially stearate, 10,10'-oxybis phenoxarsine (OBPA), N-(trihalogen methyl thiol) phthalimide, tributylsinoxide, zinc dimethyl dithio carbamate, diphenyl antimony-Z-ethyl hexanoate, copper-8-hydroxyquinoline, isothiazolone, biocide It is characterized by the fact that the bicomponent fiber has another additive, in which it is selected from the groups of silver and silver salts or their mixtures. 6. Bicomponent fiber according to one of the previous claims, its feature is; characterized in that the difference in melting points of the first component (2) and the second component (3) is below or equal to 8 °C, preferably at most 6 °C or 1 °C to 8 °C, particularly preferably between 1 °C and 6 °C . 7. It is a bicomponent fiber according to claim 6, its feature is; It is characterized by the fact that the component (2, 3) with a low melting point in the cross-section of the fiber forms the outer surface of the bicomponent fiber (1), preferably completely surrounding the component with a high melting point (2, 3). 8. It is a bicomponent fiber according to one of the preceding claims and its feature is; The Melt-Flow index difference of the first component (2) and the second component (3) is 25 9/10 min below or equal, preferably below or equal to 20 g/lO min, especially preferably 15 g/lO min 9. A bicomponent fiber according to one of the previous claims. Its feature is; It is characterized in that the Melt-Flow index of the first component (2) and the second component (3) is less than or equal to 50 g/lO min, preferably less than or equal to 40 g/lO min. 10. Bicomponent fiber according to one of the previous claims, its feature is; It is characterized by polymerization of one of the two components (2, 3) with a metallocene catalyst. 11. Claim. According to 10, it is a bicomponent fiber and its feature is; It is characterized in that the polymer of the other component (2, 3) is polymerized with Ziegler-Natta-catalyst and then subjected to Visbreaking process. 12. Bicomponent fiber according to one of the preceding claims, its feature is; the first polymer and/or the second polymer being a polyolefin or a polyolefin copolymer, preferably a polymer and/or ethylene copolymer, propylene, butyl, hexene or octene and/or a mixture and/or a blend thereof . 13. Spun wool (4) having at least one bicomponent fiber (1) according to one of the preceding claims.