WO2008083820A1 - Production de fils souples - Google Patents

Production de fils souples Download PDF

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Publication number
WO2008083820A1
WO2008083820A1 PCT/EP2007/011111 EP2007011111W WO2008083820A1 WO 2008083820 A1 WO2008083820 A1 WO 2008083820A1 EP 2007011111 W EP2007011111 W EP 2007011111W WO 2008083820 A1 WO2008083820 A1 WO 2008083820A1
Authority
WO
WIPO (PCT)
Prior art keywords
slip agent
polymer
ethylene
process according
fibres
Prior art date
Application number
PCT/EP2007/011111
Other languages
English (en)
Inventor
Marc Dessein
Johan Lammens
Wim Lannoy
Original Assignee
Balta Industries Nv
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Balta Industries Nv filed Critical Balta Industries Nv
Publication of WO2008083820A1 publication Critical patent/WO2008083820A1/fr

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Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F1/00—General methods for the manufacture of artificial filaments or the like
    • D01F1/02—Addition of substances to the spinning solution or to the melt
    • D01F1/10—Other agents for modifying properties
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
    • D01F6/44—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds as major constituent with other polymers or low-molecular-weight compounds
    • D01F6/46—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds as major constituent with other polymers or low-molecular-weight compounds of polyolefins

Definitions

  • the present invention relates to a process for the preparation of synthetic fibres for yarns for carpets or rugs, in which a polymer mass is melted under pressure and then forced through a spinning block to form fibres, and in which the fibre bundle thus obtained is cooled.
  • the invention also relates to the synthetic fibres for yarns, made in this way.
  • Synthetic fibres are some of the starting materials used in the rug and carpet (textile floor coverings) industry, along with natural fibres such as cotton, wool and silk, for example.
  • synthetic starting materials are supplied in the form of granulates or particles, examples being polyamides (PAs), polyesters (PET or PESs), polypropylene (PP) and polyethylene (PE). These starting materials are converted into synthetic fibres by melting, and the semi-finished product thus obtained is used as the starting material for further processing in the textile industry.
  • Synthetic textile fibres can be either staple fibres or filaments, depending on their length: staple fibres or simply "fibres" have a fairly short length of a tens or hundreds of millimetre, while
  • Fibres can be spun into yarns in spinning mills. Filaments, on the other hand, are taken together to form a bundle of fibres, or in particular a bundle filaments, at the bottom of a spinning shaft. The number of filaments involved here varies according to the quality and the application envisaged. Yarns are used to make woven fabrics, carpets, knitwear and clothes. Synthetic fibres are marketed in various forms, such as continuous fibres (CF), bulked continuous fibres (BCF), staple fibres, tapes and monofilaments, which have the following characteristics:
  • continuous fibres are endless untextured yarns
  • bulked continuous fibres are endless but textured or bulked yarns, which
  • - monofilaments are threads consisting of only one fibre.
  • polypropylene homopolymer In the production of synthetic fibres for yarns for rugs and carpets, polypropylene homopolymer is often used and has economic and physical advantages, e.g. stain free and a low cost compared to other polymers.
  • the major inconvenience is the "hand" of polypropylene rugs. When touching a cut pile rug a "crispy” feeling is typical for PP BCF yarns.
  • An enhanced "hand” can be obtained by the use of softening spinous or transforming BCF yarn into heatset yarn and by decreasing the size of the filaments (dpf).
  • Most filaments for carpet use are Y-type (trilobal) and have a dpf between 7 - 18 for rug use.
  • the extrusion of a yarn with a dpf lower than 10 requires perfectly tuned machines, experienced operators, and prime grade polymers and masterbatches because filaments are highly fragile and the meltstrenght is often too low to assure steady extrusion conditions.
  • the overall aspect of softness of a rug or carpet is not only a matter of properties of the used yarn, but also strongly influenced by the pile height and the pile density. In automotive applications it is known by those skilled in the art to use various copolymers to improve the touch, the toughness and flexibility of polypropylene.
  • Most used polymers are copolymers of ethylene and other alfa-olefins, SEBS, EVA, EMA, EEA, EBA and copolymers of polypropylene with other alfa-olefins. These copolymers are commercial available products and are highly compatible with homo or co-polypropylene and have a low glass transition temperature and a rather low degree of cristallinity.
  • LDPE is a homopolymer but is also known to soften blends with PP.
  • the modern copolymers are however specially engineered as modifier. These polymers can modify the cristallinity of PP, modify the amorphous polypropylene domains flexibility, glass transition temperature and may alter the surface properties of the polypropylene blend object. A number of parameters (tensile strength, notch izod impact strength, Young modulus, toughness, flexural modulus) used to characterise polymers are altered by using these modifiers.
  • US 4.769.279 discloses a fibre of ethylene acrylic copolymers with other fibre forming polymers.
  • US 4.774.277 discloses a composition useful in the preparation of film and fibres which is soft comprising polyolefin plastics blended with an elastomeric plasticizer, the latter comprises polyethylene or a copolymer of ethylene and an unsaturated ester of a lower carboxylic acid, olefinic elastomer and hydrocarbon oil.
  • WO 2004/081087 discloses a fibre (slit or meltspun) containing a polypropylene polymer and from 1 to 30 % weight of at least one ethylene - alylacrylate copolymer.
  • US 2002/0099107 discloses a textile fibre including polypropylene blended with an impact modifier (EPDM, SEBS, SEPSEP).
  • WO 96/16122 discloses a composition containing 70 - 95 % weight of one or more monovinylidene aromatic monomer conjugated diene block copolymer and from 5 to 30 part% weight of a thermoplastic polymer comprising a copolymer comprising a monovinylidene aromatic monomer and an anhydride, polystyrene, polyethylene, an ethylene vinylacetate copolymer or a mixture thereof.
  • WO 99/46435 discloses fibres comprising alfa-olefin/vinyl or vinylidene aromatic and/or hindered cycloaliphatic or aliphatic vinyl or venylidene interpolymers.
  • US 2005/0106978 discloses articles and non woven fabrics with improved elastic properties composed of a blend of a polypropylene polymer and an alpha-olefin copolymer component.
  • the aim of the present invention is to provide a process for the preparation of synthetic fibres for yarns, in particular BCF production, with an improved hand, easy to extrude and without unwanted side effects on the final product.
  • the aim of the invention is achieved with a process for the preparation of synthetic fibres for yarns for carpets or rugs, in which a polymer mass is melted under pressure and then forced through a spinning block to form fibres, and in which the fibre bundle thus obtained is cooled, wherein prior to extrusion a slip agent and a softening polymer are added to the molten polymer stream, so that the hand of the synthetic fibres are improved.
  • slip agent has to be understood as slip agent and/or anti-blocking agent because the expressions slip agent and anti-blocking are frequently used in many publications concerning the state of the art, to describe a group of product having a similar result when applied on polymer films, avoiding polymer films to block or to stick together. Some chemicals reduce the coefficient of friction of the polymer surface, others reduce the Van der Waals forces between two film layers by reducing the contact surface between the films. In this description we use the expression "slip agent", without wanted to be bound to the type of mechanism at the origin of the observed result, a decreased friction between the polyolefin filaments.
  • the softening polymer is selected from the group consisting of ethylene alkylacrylate copolymers, ethylene vinylacetate copolymers, ethylene co-alfa-olef ⁇ n polymers, propylene co-alfa-olefin polymers or a blend from these different polymers.
  • the softening polymer is a ethylene methylacrylate copolymer (EMA). If the softening polymer in the blend is highly compatible and improves the rheology of the blend finer dpf yarns can be extruded, further enhancing the softness of the yarn. Finer dpf yarns relates to yarns with a dpf lower than 10.
  • Ethylene alkylacrylates are particularly useful in this application.
  • the used ethylene alkyl acrylates are copolymers of ethylene and alkylacrylates wherein the alkyl moiety contains from one to six carbon atoms.
  • EMA is a copolymer of ethylene and methylacrylate.
  • EEA is a copolymer of ethylene and ethyl acrylate, and EBA is a copolymer of ethylene and butylacrylate.
  • the softening polymer is an ethylene methylacrylate copolymer (EMA).
  • EMA as a polymer modifier for BCF production is the excellent spinability of the polymer mass allowing the production of finer filaments at a high speed, the temperature resistance during processing, a good dispersion of pigments and the general aspect and aesthetics of the final fibre.
  • useful for our application is especially EMA with a methylacrylate copolymer content from 10 - 30 weight percent, and in a preferred case a content of 20 % methylacrylate.
  • the MFR of the EMA (ISOl 133 at 190 0 C and pressure of 2,16 kg) is selected in order to optimise the blend (dispersion in the polypropylene matrix), and in case of the fibre quality homo polypropylene (MFR 25 at 230°C and 2,16 kg), a MFR of 8 is used in these experiments, also a MFR of 20 has been used with the same polypropylene quality.
  • EVA copolymer a copolymer of ethylene and vinylacetate, a vinyl acetate content from 10 - 40 % by weight could be used, as an example good results were obtained with a 28 % vinylacetate content, and a MFR of 25 (ASTM 1238/ ISO 1133).
  • the softening polymer is added in an amount of between 1 and 20 wt-%. In fact, it is preferable added in an amount of between 1 and 15 wt-%, especially in an amount of between 1 and 8 wt-%.
  • said slip agent is selected from the group consisting of N,N'-alkylene-bis fatty acid amides having a general structural formula R-CO-NH-(CH 2 ) n -NH-CO-R' wherein R and R' are identical or different alkyl or alkenyl groups with 15 to 21 carbon atoms, -CO- is a carbonyl group and n is an integer from 2 to 4.
  • said slip agent is used pure or as a mixture.
  • N,N'-alkylene-bis-fatty acid amides are N,N'-ethylene-bisstearamide, N,N'-ethylene-bisoleamide, N,N'-ethylene-bisbehenamide, N,N'-ethylene- biserucamide, N,N'-propylene-bisstearamide, N,N'-butylenebisoleamide.
  • said slip agent is a N,N'-alkylene-bis fatty acid amide, in particular N 5 N'- ethylene-bisstearamide (UIPAC: N-(2-octadecanoylaminoethyl) octadecanamide, (CAS number 110-30-5 , Chemical formula C38H76N2O2)).
  • said slip agent is added in an amount of between 0.1 and 3 wt-%. In fact, it is preferable added in an amount of between 0.1 and 2 wt-%, especially in an amount of between 0.3 and 1.3 wt-%.
  • the polymer mass comprises polypropylene homopolymer and/or polypropylene copolymer.
  • the polymer mass may also comprise a non miscible polymer selected from the classes of the polyamides, polyesters and/or polystyrene homo or copolymers.
  • said process further comprising heatsetting the obtained fibre bundle.
  • the obtained fibre bundle is preferably heatsetted at a temperature in the range of 120 °C to 160 °C.
  • Another aspect of the present invention relates to synthetic fibres for yarns wherein said fibres comprise a slip agent and a softening polymer so that the hand of the synthetic fibres are improved.
  • a process as described above preferably produces the synthetic fibres in question.
  • the fibre comprises between 89 and 98 wt-% polypropylene, between 1 and 10 wt-% EMA and l% N,N'-ethylene-bis-stearamide (EBS). In another preferred embodiment of the fibre according to this invention, the fibre comprises between 89 and 98 wt-% polypropylene, between 1 and 10 wt-% EVA and 1% N,N'-ethylene-bisstearamide (EBS).
  • Twisting, cabling and heatsetting can further process the fibre according to this invention.
  • the fibre according to the invention can be used for the manufacturing of interior textile, rugs, carpets and upholstery.
  • This invention relates further to the use of a slip agent in combination with a softening polymer in the production of synthetic yarns for carpets or rugs as a means for improving the softness of the produced synthetic fibres.
  • the used softening polymer is preferably EMA or EVA, because of there more polar nature than polyolefin, and the relatively low melting point, both having a positive effect on pile binding.
  • the used softening polymer is EMA because of a more thermostable behaviour compared to EVA at 230 — 250 °C and the low coefficient of friction of the EMA polymer.
  • the slip agent should have a melting temperature above 75 °C, and most preferably above 105 °C.
  • the used slip agent is preferably N,N' -ethylene bisstearamide. The melting point of N,N' -ethylene bisstearamide is 135 - 146 °C and boils at 260 °C.
  • the final carpet yarn is soft due to a low degree of friction between the filaments, but has no "greasy" touch mostly found by liquid or low temperature melting slip agents. Pile or tuft binding using SBR latex coating is good.
  • a synthetic starting material preferably a homopolypropylene (PP) or a random or block copolymer of propylene and ethylene or a blend of both polymers, supplied in granulate or particulate form, is melted under pressure in a melting device, which may be an extruder, for example.
  • a slip agent in combination with a softening polymer are added to the molten polymer stream (see example 1) prior to extrusion.
  • the slip agent and the softening polymer may be added directly in the extruder on a BCF carpet yarn extrusion line, or preferably a masterbatch may be prepared in order to add the components to the polypropylene before extrusion.
  • a compound containing all the fibre constituents may also be prepared. Colour masterbatch and any other classical adjuvant (e.g. UV stabiliser) may also be added by adequate dosing equipment.
  • a slip agent and a softening polymer greatly improves the hand of the synthetic fibres and the rugs or carpets made thereof.
  • a softening polymer such as for example EMA
  • the use of a softening polymer permits a lower amount of slip agent to be used, hence improving softness without unwanted side effects (pile binding, greasy touch of the carpet pile). This has been demonstrated by the following test.
  • An industrial BCF extruder (Rieter) is fed with 5 % w/w of the above mentioned masterbatch, 2 % of a colour masterbatch, and 93 % polypropylene.
  • the extrusion is carried out in standard conditions (temperature extruder 245 °C), known by those skilled in the art, and a 2150 dtex, 138 filament or 210 filament trilobal yarn is produced.
  • the softening masterbatch has no negative effect on extrusion speed and efficiency.
  • the obtained yarn has classical values for crimp and shrinkage and has a very soft hand. Heating up the yarn samples during 3 minutes in an oven at 100 - 135 °C will increase the migration speed of the slip agent and accelerate the development of the soft hand of the yarn. In industrial conditions, the yarn will be heated during heatsetting or during the backcoating of the rug or carpet and the soft aspect will be developed.
  • a test panel identifies the modified fibre according to the invention as a soft hand yarn.
  • a rug is produced on a double rapier loom Reed 318/8 core with a 2150 dtex- 138 Y soft yarn according to the invention and with a reference yarn (according to the state of the art, thus without a slip agent in combination with a softening polymer modifier).
  • the rug After weaving, the rug is finished on a latex backing line and an SBR based latex is used to assure the pile binding.
  • an SBR based latex is used to assure the pile binding.
  • shearing and drying a test panel evaluated the strips and identified unanimously the modified yarn as being softer than the reference yarn.
  • a blend of 90 % homopolypropylene, 9% polypropylene-co-alfa-olefin (Exxon Vistamaxx VM 3000, MFR at 230 °C: 8) and 1% EBS is extruded with a colour masterbatch and a 2150 dtex and 138 filament yarn is produced on an industrial line at 2400 m/minute. The final yarn is soft and has a good hand.
  • the final yarn is soft and the rug made thereof has a strongly improved touch compared to a standard non modified reference sample.

Abstract

Cette invention concerne un procédé pour la préparation de fibres synthétiques pour fils, dans lequel procédé une masse polymère est fondue sous pression puis forcée à travers un bloc de filage pour former des fibres, et le faisceau de fibres ainsi obtenu est refroidi. Selon l'invention, un agent glissant et un polymère de ramollissement sont ajoutés au courant de polymère fondu, de telle sorte que la main des fibres synthétiques soit améliorée. L'invention concerne également les fibres synthétiques pour fils, faites de cette manière. L'invention concerne en outre l'utilisation d'un agent glissant en combinaison avec un polymère adoucissant dans la production de fils synthétiques pour tapis, comme moyen pour améliorer la souplesse des fibres synthétiques produites.
PCT/EP2007/011111 2007-01-10 2007-12-18 Production de fils souples WO2008083820A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EPPCT/EP2007/050226 2007-01-10
EP2007050226 2007-01-10

Publications (1)

Publication Number Publication Date
WO2008083820A1 true WO2008083820A1 (fr) 2008-07-17

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EP2660372A1 (fr) * 2012-05-04 2013-11-06 LANXESS Deutschland GmbH Fibres thermoplastiques avec une tension de surface réduite
US20190118413A1 (en) 2012-05-31 2019-04-25 Mohawk Industries, Inc. Systems and methods for manufacturing bulked continuous filament from colored recycled pet
US10487422B2 (en) 2012-05-31 2019-11-26 Aladdin Manufacturing Corporation Methods for manufacturing bulked continuous filament from colored recycled pet
US10493660B2 (en) 2012-05-31 2019-12-03 Aladdin Manufacturing Corporation Systems and methods for manufacturing bulked continuous filament
US10538016B2 (en) 2012-05-31 2020-01-21 Aladdin Manufacturing Corporation Methods for manufacturing bulked continuous carpet filament
US10647046B2 (en) 2012-05-31 2020-05-12 Aladdin Manufacturing Corporation Methods for manufacturing bulked continuous filament
US10654211B2 (en) 2012-05-31 2020-05-19 Aladdin Manufacturing Corporation Methods for manufacturing bulked continuous filament
US10695953B2 (en) 2012-05-31 2020-06-30 Aladdin Manufacturing Corporation Methods for manufacturing bulked continuous carpet filament
US10751915B2 (en) 2016-11-10 2020-08-25 Aladdin Manufacturing Corporation Polyethylene terephthalate coloring systems and methods
US10983452B2 (en) 2012-11-20 2021-04-20 Hp Indigo B.V. Methods of printing and electrostatic ink compositions
US11045979B2 (en) 2012-05-31 2021-06-29 Aladdin Manufacturing Corporation Methods for manufacturing bulked continuous filament from recycled PET
US11242622B2 (en) 2018-07-20 2022-02-08 Aladdin Manufacturing Corporation Bulked continuous carpet filament manufacturing from polytrimethylene terephthalate
US11279071B2 (en) 2017-03-03 2022-03-22 Aladdin Manufacturing Corporation Method of manufacturing bulked continuous carpet filament
US11351747B2 (en) 2017-01-30 2022-06-07 Aladdin Manufacturing Corporation Systems and methods for manufacturing bulked continuous filament from colored recycled PET
US11473216B2 (en) 2017-09-15 2022-10-18 Aladdin Manufacturing Corporation Polyethylene terephthalate coloring systems and methods
CN116145297A (zh) * 2023-04-04 2023-05-23 浙江四通新材料科技股份有限公司 一种抗污尼龙地毯纱及其制备方法

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US4774277A (en) * 1982-03-26 1988-09-27 Exxon Research & Engineering Co. Blends of polyolefin plastics with elastomeric plasticizers
WO1996016122A1 (fr) * 1994-11-22 1996-05-30 The Dow Chemical Company Composition utile pour des articles en elastomere et articles prepares a partir de cette composition
WO2006118794A2 (fr) * 2005-04-29 2006-11-09 Exxonmobil Chemical Patents Inc. Fibres et non-tisses a base de polypropylene

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4774277A (en) * 1982-03-26 1988-09-27 Exxon Research & Engineering Co. Blends of polyolefin plastics with elastomeric plasticizers
WO1996016122A1 (fr) * 1994-11-22 1996-05-30 The Dow Chemical Company Composition utile pour des articles en elastomere et articles prepares a partir de cette composition
WO2006118794A2 (fr) * 2005-04-29 2006-11-09 Exxonmobil Chemical Patents Inc. Fibres et non-tisses a base de polypropylene

Cited By (34)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2660372A1 (fr) * 2012-05-04 2013-11-06 LANXESS Deutschland GmbH Fibres thermoplastiques avec une tension de surface réduite
WO2013164452A1 (fr) 2012-05-04 2013-11-07 Lanxess Deutschland Gmbh Fibres thermoplastiques possédant une tension superficielle réduite
CN104350188A (zh) * 2012-05-04 2015-02-11 朗盛德国有限责任公司 具有降低的表面张力的热塑性塑料纤维
US11007673B2 (en) 2012-05-31 2021-05-18 Aladdin Manufacturing Corporation Methods for manufacturing bulked continuous filament from colored recycled PET
US11427694B2 (en) 2012-05-31 2022-08-30 Aladdin Manufacturing Corporation Methods for manufacturing bulked continuous filament
US11045979B2 (en) 2012-05-31 2021-06-29 Aladdin Manufacturing Corporation Methods for manufacturing bulked continuous filament from recycled PET
US10532496B2 (en) 2012-05-31 2020-01-14 Aladdin Manufacturing Corporation Methods for manufacturing bulked continuous filament
US10532495B2 (en) 2012-05-31 2020-01-14 Aladdin Manufacturing Corporation Methods for manufacturing bulked continuous filament from recycled PET
US10538016B2 (en) 2012-05-31 2020-01-21 Aladdin Manufacturing Corporation Methods for manufacturing bulked continuous carpet filament
US10639818B2 (en) 2012-05-31 2020-05-05 Aladdin Manufacturing Corporation Methods for manufacturing bulked continuous filament
US10647046B2 (en) 2012-05-31 2020-05-12 Aladdin Manufacturing Corporation Methods for manufacturing bulked continuous filament
US10654211B2 (en) 2012-05-31 2020-05-19 Aladdin Manufacturing Corporation Methods for manufacturing bulked continuous filament
US10695953B2 (en) 2012-05-31 2020-06-30 Aladdin Manufacturing Corporation Methods for manufacturing bulked continuous carpet filament
US10744681B2 (en) 2012-05-31 2020-08-18 Aladdin Manufacturing Corporation Methods for manufacturing bulked continuous filament
US11179868B2 (en) 2012-05-31 2021-11-23 Aladdin Manufacturing Corporation Systems and methods for manufacturing bulked continuous filament
US11911930B2 (en) 2012-05-31 2024-02-27 Aladdin Manufacturing Corporation Methods for manufacturing bulked continuous filament from recycled PET
US20190118413A1 (en) 2012-05-31 2019-04-25 Mohawk Industries, Inc. Systems and methods for manufacturing bulked continuous filament from colored recycled pet
US10493660B2 (en) 2012-05-31 2019-12-03 Aladdin Manufacturing Corporation Systems and methods for manufacturing bulked continuous filament
US11780145B2 (en) 2012-05-31 2023-10-10 Aladdin Manufacturing Corporation Method for manufacturing recycled polymer
US10487422B2 (en) 2012-05-31 2019-11-26 Aladdin Manufacturing Corporation Methods for manufacturing bulked continuous filament from colored recycled pet
US11273579B2 (en) 2012-05-31 2022-03-15 Aladdin Manufacturing Corporation Systems and methods for manufacturing bulked continuous filament
US11724418B2 (en) 2012-05-31 2023-08-15 Aladdin Manufacturing Corporation Methods for manufacturing bulked continuous carpet filament
US11292174B2 (en) 2012-05-31 2022-04-05 Aladdin Manufacturing Corporation Systems and methods for manufacturing bulked continuous filament
US11426913B2 (en) 2012-05-31 2022-08-30 Aladdin Manufacturing Corporation Methods for manufacturing bulked continuous filament
US10983452B2 (en) 2012-11-20 2021-04-20 Hp Indigo B.V. Methods of printing and electrostatic ink compositions
US10751915B2 (en) 2016-11-10 2020-08-25 Aladdin Manufacturing Corporation Polyethylene terephthalate coloring systems and methods
US11351747B2 (en) 2017-01-30 2022-06-07 Aladdin Manufacturing Corporation Systems and methods for manufacturing bulked continuous filament from colored recycled PET
US11840039B2 (en) 2017-01-30 2023-12-12 Aladdin Manufacturing Corporation Systems and methods for manufacturing bulked continuous filament from colored recycled PET
US11279071B2 (en) 2017-03-03 2022-03-22 Aladdin Manufacturing Corporation Method of manufacturing bulked continuous carpet filament
US11473216B2 (en) 2017-09-15 2022-10-18 Aladdin Manufacturing Corporation Polyethylene terephthalate coloring systems and methods
US11618973B2 (en) 2017-09-15 2023-04-04 Aladdin Manufacturing Corporation Polyethylene terephthalate coloring systems and methods
US11242622B2 (en) 2018-07-20 2022-02-08 Aladdin Manufacturing Corporation Bulked continuous carpet filament manufacturing from polytrimethylene terephthalate
US11926930B2 (en) 2018-07-20 2024-03-12 Aladdin Manufacturing Corporation Bulked continuous carpet filament manufacturing from polytrimethylene terephthalate
CN116145297A (zh) * 2023-04-04 2023-05-23 浙江四通新材料科技股份有限公司 一种抗污尼龙地毯纱及其制备方法

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