46results about "Monocomponent polypropylene artificial filament" patented technology

The resin composition for melt spinning of the present invention is a filament having a melt viscosity of 250 Pa·s or less at 200° C. and a shear rate of 0.1 s−1 and a tensile strength of 10 MPa or more. The filament can be produced by forming a molten liquid of a resin composition having a melt viscosity of 250 Pa·s or less at 200° C. and a shear rate of 0.1 s−1 into a filament shape to provide a formed material, and conveying and concurrently cooling the formed material. The present invention also provides a resin composition for melt spinning being a filament, and a method for producing fiber using a melt spinning apparatus.

Charged polymeric webs, such as electret webs, include a thermoplastic resin and a charge-enhancing additive. The additives are substituted heterocyclic thiolate salts. The heterocyclic thiolate salt has 2 nitrogen groups and a third group that may be an NH, N—NH2, O, or S group. The substituent group is an aromatic or heterocyclic aromatic group. The electret webs may be a non-woven fibrous web or a film. The electret webs are suitable for use as filter media.

The present disclosure relates to a production method concerning the use in synthetic yarn production of lavender fibres, which possess antimicrobial and antioxidant properties, obtained in powder form from lavender stems that remain as waste in nature.

The present invention relates to filtration media made from melt-blown fibers having improved barrier properties. The melt-blown fibers in the filtration media of the invention are made of a visbroken metallocene-catalyzed propylene homopolymer composition with specified melting temperature Tm and molecular weight distribution (MWD).

The invention relates to a coarse synthetic fiber consisting of three or more partially fused filaments made of a polymer composition comprising at least one polypropylene, wherein the fiber has a multi-lobed cross-sectional shape with three or more lobes. The invention further relates to a method of producing a coarse synthetic fiber, to a cementitious material comprising a binder and the coarse synthetic fiber of the invention, and to a method of forming a concrete surface using a concrete mixture modified with the coarse synthetic fiber of the invention.

The following properties: a melt flow rate of greater than about 900 g / 10 min; a molecular weight distribution (M w / M n ); Less than about 8 M z+1 / M w and a xylene solubles content of less than about 4.0 wt.%. Such polymers are useful in meltblown nonwoven applications.

A meltblown material formed from a plurality of fibers that can withstand the effects of a gamma irradiation sterilization process without negatively impacting the bacterial filtration efficiency (BFE) and particle filtration efficiency (PFE) of the meltblown material (e.g., facemasks, surgical gowns, surgical caps, etc.) is provided. The fibers include a high melt flow rate (MFR) polyolefin. Further, both the fibers include specific antioxidants and a charge enhancer package that allow for the effective electret treatment of the resulting meltblown material prior to sterilization, where the filtration efficiency and of the material is improved post-sterilization compared to materials without the specific combination of antioxidants and charge enhancing components.

A non-woven fabric is provided that includes a first non-woven layer comprising a first plurality of fine fibers. The first plurality of fine fibers comprises a first polymeric material comprising (i) a first polymeric component and (ii) optionally one or more first additives, where the first polymeric component comprises a first recycled polypropylene (rPP) comprising a visbreaking spunbond grade polypropylene, and the second polymeric component comprises a second recycled polypropylene (rPP) comprising a visbreaking spunbond grade polypropylene. The visbroken spunbond grade polypropylene has a first melt flow rate (MFR) prior to visbreaking and a second MFR after visbreaking, and wherein the second MFR is greater than the first MFR.

A polypropylene composition (PC) comprising: a. from 95.0 to 99.99 wt.-%, of a polypropylene (PP), preferably a propylene homopolymer (HPP); and b. from 0.01 to 5.0 wt.-%, of a compound according to Formula (I), wherein each R is independently selected from C1 to C6 alkylene, C2 to C6 alkenylene and a single bond, each R′ is independently selected from H and C1 to C6 alkyl, each R″ is independently selected from H and C1 to C22 alkyl, wherein each alkylene, alkenylene and alkyl group may optionally be substituted by deuterium or fluorine, and the two substituents on the central benzene ring may be either positioned in an ortho, meta or para relationship; wherein the polypropylene composition (PC) has an MFR2 of from 400 to 5000 g / 10 min and a melting temperature Tm of from 140 to 170° C.

The invention relates to a bicomponent fiber comprising a first component comprising a first polypropylene homopolymer and a second component comprising a second polypropylene homopolymer and a slip agent, wherein the slip agent is selected from the group consisting of stearyl erucamide, polyol esters of monocarboxylic acids, pentaerythritol monooleate, saturated and unsaturated fatty acid amides or ethylenebis(amides), glycols, polyether polyols, adipic acid and sebacic acid and combinations thereof and wherein the amount of the slip agent with respect to the second component is 0.05 to 1.00 wt%, wherein the first component has a melt flow index MFI1 determined according to ISO 1133-1:2011 at 230 ⁰C and 2.16 kg and the second component has a melt flow index MFI2 determined according to ISO 1133-1:2011 at 230 ⁰C and 2.16 kg of MFI2 and the difference between MFI1 and MFI2 is 0.0 to 25.0 dg / min

The present invention relates to a method (100) for producing a photocatalytic multicomponent fiber, the method comprising the steps of: providing a support mixture (110) comprising at least one thermoplastic polymer; providing an active mixture (120) comprising at least one organic polymer, at least one photocatalyst at a concentration of at least 10% by weight based on the weight of the active mixture, and at least one coupling agent that is resistant to oxidation; spinning a multicomponent fiber from the support mixture and the active mixture (130); and removing the at least one organic polymer from the surface of the multicomponent fiber to produce a photocatalytic multicomponent fiber (160). The present invention also relates to multicomponent fibers, textile products, and filters.

A meltblown material formed from a plurality of fibers that can withstand the effects of a gamma irradiation sterilization process without negatively impacting the bacterial filtration efficiency (BFE) and particle filtration efficiency (PFE) of the meltblown material (e.g., facemasks, surgical gowns, surgical caps, etc.) is provided. The fibers include a high melt flow rate (MFR) polyolefin. Further, both the fibers include specific antioxidants and a charge enhancer package that allow for the effective electret treatment of the resulting meltblown material prior to sterilization, where the filtration efficiency and of the material is improved post- sterilization compared to materials without the specific combination of antioxidants and charge enhancing components.

The invention relates to a method (100) for manufacturing a photocatalytic multicomponent fiber, comprising the following steps: providing a support mixture (110) comprising at least one thermoplastic polymer; providing an active mixture (120) comprising: at least one organic polymer, at least one photocatalyst at a concentration of at least 10% by weight relative to the weight of active mixture, and at least one oxidation-resistant coupling agent; spinning (130) a multicomponent fiber from the support and active mixtures; removing (160) the at least one organic polymer at the surface of the multicomponent fiber so as to generate a photocatalytic multicomponent fiber. The invention also relates to a multicomponent fiber, a textile and a filter.

A carded nonwoven (110) including synthetic staple fibers (120), wherein the synthetic staple fibers have a hydrophilic polypropylene-based composition, said hydrophilic polypropylene-based composition having a polypropylene-based matrix, an ethylene-propylene copolymer additive and a hydrophilic melt additive is disclosed.

The SB non-woven fabric of the present disclosure comprises a plurality of hollow fibers. The coefficient of variation in the hollow ratio of the hollow fibers is less than 10%.

A nonwoven fabric. The nonwoven fabric can include a first surface and a second surface and a visually discernible pattern of three-dimensional features on one of the first or second surface. Each of the three-dimensional features can define a microzone comprising a first region and a second region. The first and second regions can have a difference in values for an intensive property.

The invention relates to a hollow fiber and yarn. The hollow fiber is provided with a square hollow core part and blades, and the outer surface of the core part is square; the number of the blades is eight, and the blades are located at the four corners and the middle positions of the four edges of the square of the outer surface of the core part respectively. The blades protrude outwards along the straight line where the center point of the hollow fiber and the connecting points of the blades and the outer surface of the core part are located. The fiber disclosed by the invention can keep a good hollow rate in the use process, and the thermal insulation and moisture absorption of the fiber can be always kept at a better level.

A filament for a pile yarn. The filament is a multi-component filament, comprising a core (10), at least a first sheath (20) at least partly enclosing the core (10) and optionally a second sheath (30) at least partly enclosing the first sheath (20). The core (10) comprises recycled polypropylene, and the first sheath (20) comprises polypropylene and a particulate, opaque additive.

The subject matter of the invention is an adhesive tape, in particular a wrapping tape for sheathing cables in automobiles. The adhesive tape is equipped with a textile support and at least one adhesive layer applied to one or both sides of the support. The support is coloured by an organic dye which is composed of yellow and red pigments. The yellow pigments are based on anthraquinone. According to the invention, pigments based on perylene are used as red pigments.

A carded nonwoven (110) comprising synthetic staple fibers (120), wherein the synthetic staple fibers comprise or consist of a hydrophilic polypropylene-based composition, said hydrophilic polypropylene-based composition comprising a polypropylene-based matrix, an ethylene-propylene copolymer additive and a hydrophilic melt additive.

A carded nonwoven (110) comprising synthetic staple fibers (120), wherein the synthetic staple fibers comprise or consist of a hydrophilic polypropylene-based composition, said hydrophilic polypropylene-based composition comprising a polypropylene-based matrix, an ethylene-propylene copolymer additive and a hydrophilic melt additive.

An absorbent article including a durably hydrophobic carded nonwoven (110) in particular as topsheet or acquisition layer is presented. The nonwoven has synthetic staple fibers (120) that include a hydrophilic polypropylene-based composition. The hydrophilic polypropylene-based composition has a polypropylene-based matrix, an ethylene-propylene copolymer additive, and a hydrophilic melt additive.

An absorbent article comprising a durably hydrophobic carded nonwoven (110) in particular as topsheet or acquisition layer. The nonwoven comprises synthetic staple fibers (120) that comprise or consist of a hydrophilic polypropylene-based composition. The hydrophilic polypropylene-based composition comprising a polypropylene-based matrix, an ethylene-propylene copolymer additive and a hydrophilic melt additive.

A polypropylene composition (PC) comprising: a. 95.0 to 99.99 wt.-% of a polypropylene (PP), preferably a propylene homopolymer (HPP); and b. 0.01 to 5.0 wt.-% of a compound according to formula (I) wherein each R is independently selected from C1 to C6 alkylene, C2 to C6 alkenylene and a single bond, each R' is independently selected from H and C1 to C6 alkyl, each R" is independently selected from H and C1 to C 22 alkyl, wherein each alkylene, alkenylene and alkyl can optionally be substituted with deuterium or fluorine, and the two substituents on the central phenyl ring can be positioned in ortho, meta or para relationship; wherein the polypropylene composition (PC) has a MFR2 of 400 to 5000 g / 10min and a melting temperature Tm of 140 to 170 °C.

A reinforcement member suitable for being used to reinforce concrete characterized in that it comprises synthetic fiber with the ratio of its length to equivalent diameter being in range of 30 to 300-and having embossments which extend from its outer surface to outside on the said outer surface such that they will form protrusions and have depth in range of 0.10 mm- 0.35mm.

The application relates to the field of non-woven fabric manufacturing, and particularly discloses a graphene spunbond filament non-woven fabric and a preparation method thereof.A graphene spunbond filament non-woven fabric comprises the following raw materials in parts by weight: 90-110 parts of polypropylene, 0.5-1.5 parts of graphene, 1-3 parts of nano-silver, 0.5-1.5 parts of chlorine dioxide and 1-3 parts of sodium alginate.The graphene spunbond filament non-woven fabric has excellent antibacterial performance and antibacterial durability;the mutual combination of graphene, nano-silver and chlorine dioxide promotes the excellent antibacterial performance of the non-woven fabric;the sodium alginate is used to form a film to protect the antibacterial components of the non-woven fabric, thereby achieving a slow-release effect and improving the antibacterial durability of the non-woven fabric.

Described herein are articles comprising nonwoven fabrics and methods of making said nonwoven fabrics. Methods of making nonwoven fabrics may include forming polymer fibers from a bulk polymer in the presence of a nucleating agent, and forming a nonwoven fabric from the polymer fibers

Nonwoven fabrics are provided that include a first nonwoven layer comprising a first plurality of fine fibers. The first plurality of fine fibers comprises a first polymeric material including (i) a first polymer component and (ii) optionally one or more first additives, wherein the first polymer component comprises a first recycled-polypropylene (rPP) comprising a visbroken spunbond grade polypropylene having a first melt flow rate (MFR) before visbreaking and second MFR after visbreaking,and wherein the second MFR is larger than the first MFR.

The invention defines a composition comprising: a) a thermoplastic polymer, preferably a polyolefin; and b) a stabiliser mixture comprising at least two of the components selected from (i), (ii) and (iii), wherein component (i) is a hydroxylamine or amine oxide; component (ii) is a benzofuran-2-one of formula (I); and component (iii) is a chromanol, wherein, R3 is a substituted carbocyclic or heterocyclic aromatic ring system, R4, R5, R6 and R7 are each independently of one another hydrogen or a substituent selected from chloro; hydroxy; a substituted or unsubstituted hydrocarbyl group, optionally containing at least one heteroatom; substituted or unsubstituted hydrocarbyloxy group, optionally containing at least one further heteroatom; substituted or unsubstituted cyclohydrocarbyl group, optionally containing at least one heteroatom; or hydrocarbylthio, optionally containing at least one further heteroatom, wherein when the stabiliser mixture comprises components (i) and (ii) and / or (iii) it is present in the composition in an amount of below 500 ppm by the combined weight of components (i) and (ii) and / or (iii) present in the stabiliser mixture based on the weight of the thermoplastic polymer, wherein when the stabiliser mixture comprises components (ii) and (iii) without (i) it is present in the composition in an amount of less than 300 ppm, desirably less than 250 ppm, preferably up to 200 ppm, more preferably up to 150 ppm, more preferably still up to 100 ppm, by weight of components (ii) and (iii) based on the weight of the thermoplastic polymer. Also claimed is a method for producing the composition, and the use of the stabiliser mixture and a specific stabiliser mixture.