US20070261777A1 - Method for Coating Grey Goods for Carpeting Using a Broad Slotted Nozzle - Google Patents

Method for Coating Grey Goods for Carpeting Using a Broad Slotted Nozzle Download PDF

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Publication number
US20070261777A1
US20070261777A1 US10/570,429 US57042904A US2007261777A1 US 20070261777 A1 US20070261777 A1 US 20070261777A1 US 57042904 A US57042904 A US 57042904A US 2007261777 A1 US2007261777 A1 US 2007261777A1
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United States
Prior art keywords
carpet
thermoplastic material
upper layer
underside
filaments
Prior art date
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Abandoned
Application number
US10/570,429
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English (en)
Inventor
Jürgen Steckelberg
Gerd Ostermann
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Nordson Corp
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Individual
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Filing date
Publication date
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Assigned to NORDSON CORPORATION reassignment NORDSON CORPORATION ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: OSTERMANN, GERD, STECKELBERG, JURGEN
Publication of US20070261777A1 publication Critical patent/US20070261777A1/en
Abandoned legal-status Critical Current

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    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N7/00—Flexible sheet materials not otherwise provided for, e.g. textile threads, filaments, yarns or tow, glued on macromolecular material
    • D06N7/0063—Floor covering on textile basis comprising a fibrous top layer being coated at the back with at least one polymer layer, e.g. carpets, rugs, synthetic turf
    • D06N7/0071—Floor covering on textile basis comprising a fibrous top layer being coated at the back with at least one polymer layer, e.g. carpets, rugs, synthetic turf characterised by their backing, e.g. pre-coat, back coating, secondary backing, cushion backing
    • D06N7/0076—Floor covering on textile basis comprising a fibrous top layer being coated at the back with at least one polymer layer, e.g. carpets, rugs, synthetic turf characterised by their backing, e.g. pre-coat, back coating, secondary backing, cushion backing the back coating or pre-coat being a thermoplastic material applied by, e.g. extrusion coating, powder coating or laminating a thermoplastic film
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/07—Flat, e.g. panels
    • B29C48/08—Flat, e.g. panels flexible, e.g. films
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C5/00—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work
    • B05C5/02—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work
    • B05C5/0254—Coating heads with slot-shaped outlet
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/05—Filamentary, e.g. strands
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/15—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor incorporating preformed parts or layers, e.g. extrusion moulding around inserts
    • B29C48/154—Coating solid articles, i.e. non-hollow articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/30—Extrusion nozzles or dies
    • B29C48/305—Extrusion nozzles or dies having a wide opening, e.g. for forming sheets
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N2207/00—Treatments by energy or chemical effects
    • D06N2207/12—Treatments by energy or chemical effects by wave energy or particle radiation
    • D06N2207/123—Treatments by energy or chemical effects by wave energy or particle radiation using electromagnetic radiation, e.g. IR, UV, actinic light, laser, X-ray, gamma-ray, microwave, radio frequency

Definitions

  • the invention relates to a method for coating grey goods for carpeting that has an upper layer with filaments.
  • the invention also relates to a carpet itself that has an upper layer with filaments, and a coating device for coating grey goods for carpeting.
  • Carpets and methods for producing them are sufficiently well known.
  • Carpets usually have an upper layer, which may be variously constructed.
  • the upper layer may comprise pressed filaments, which are also referred to as mat or felt.
  • the filaments are entangled with each other.
  • Carpets of this sort are known as felts.
  • the upper layer comprises yarns that are drawn through a layer of supporting material.
  • the yarns are bundles of filaments.
  • the yarns can be drawn through the supporting material as closed loops in a tufting process.
  • the tufting process produces carpets known as tufted carpets.
  • the loops can also be cut open, however, and the cut loops then form velour.
  • Felts that have undergone further processing are also sometimes referred to as velours.
  • the upper layers are subjected to highdemands from abrasion and foot traffic; good filament binding prevents the filaments from being loosened by the later demands.
  • Latex does not meet the requirements for recyclability. Procedures for applying latex are energy-intensive, and the production lines that use them require a lot of space. Attempts to employ other forms of binding, for example using thermoplastic materials, have failed so far because of the quality of the filament binding. The binding did not meet the requirements of standardized walking, tensile and abrasion demands.
  • the object of the invention is to provide a durable carpet without latex binding of the filaments.
  • the object of the invention is to provide a coating device for coating grey goods for carpeting which makes it possible to produce wear-resistant carpets without latex binding of the filaments.
  • the first aspect of the problem is solved by a method for coating a carpet according to claim 1 , wherein a thermoplastic material is applied to the upper layer on the underside of the carpet and the filaments are bonded.
  • thermoplastic is used here in general to mean an adhesive based on thermoplastic material or a formulation based on thermoplastic material.
  • Binding of the filaments with thermoplastic material is usable with various types of carpeting, in particular with tufted carpets, which may be of looped or velour type, but also with felts, which may likewise be of looped or velour type or in the form of fleece or needle felt.
  • Tufted carpets have yarns or filament bundles which are passed through a supporting material, so that segments of filament bundles protrude from the top and bottom sides of the supporting material.
  • the segments of filament bundles are passed through the supporting material on the underside of the carpet in the form of loops.
  • Carpet loops are formed by a filament bundle on the top side of the carpet being passed through the supporting material to the underside of the carpet, being reversed through a loop, and being passed again from the underside of the carpet at a (penetration) point some distance away through the supporting material to the top of the carpet.
  • the segments of filament bundles on the underside of the carpet are not fixed, and are therefore very sensitive, in part because they are drawn only loosely through the supporting material and in part because individual filaments can easily be pulled out of them.
  • thermoplastic material to the underside of the carpet glues the entire filament bundle permanently to the supporting material, since the thermoplastic material penetrates into interstices and thus actually makes the carpet durable.
  • the thermoplastic material also penetrates at least part way into the filament bundle, so that the filaments become bonded together. If the thermoplastic material penetrates into the area of the outer periphery of the filament bundles, they have as it were a bonded protective sleeve due to the adhesive that has penetrated into them, which makes the carpet even more durable.
  • the segments of filament bundles covered with thermoplastic material form so-called nubs on the underside of the carpet.
  • filament bundles in tufted carpets form loops on the underside of the carpet
  • their top sides can take various forms; for example, they can also have cut loops.
  • all types of tufted carpets are suitable for the coating according to the invention.
  • filaments are joined together to form the top layer by mechanical processes such as pressing, needle-punching or fulling, or by thermal processes.
  • the filaments form a felt or mat.
  • Felts have an unorganized structure on the underside of the carpet.
  • the thermoplastic material is applied to the pressed upper layer on the underside of the carpet to fix the filaments. Because surprisingly it has turned out even with felts that filament binding can be accomplished in a simple way by applying thermoplastic material. Alternatively, a supporting layer can be positioned between the pressed filaments and the thermoplastic layer, even with felts.
  • the upper layer is heated on the underside of the carpet, and a thermoplastic material is applied to the heated upper layer on the underside of the carpet.
  • Heating the grey goods before applying the thermoplastic material is preferably performed when hot melt adhesives are used.
  • Hot melt adhesives are solid at ambient temperatures and fluid at elevated temperatures. The hot melt adhesive cools down more slowly when the grey goods are preheated, and is therefore able to penetrate into the segments of filament bundles for a longer time and to bond filaments together not only on the outer circumference but also in the interior of the filament bundles.
  • the thermoplastic material is able to penetrate more deeply into the mat or felt.
  • the thermoplastic material is heated after it is applied to the underside of the upper layer.
  • Such afterheating can be combined with the preheating. Being heated up twice enables the thermoplastic material, in particular hot melt adhesive, to penetrate especially deeply into the filament bundle or the mat.
  • IR light infrared light
  • IR light is used to heat the carpet. Using IR light in combination with an adhesive that reacts to it thermally makes it possible to dispense with complicated heating systems like those needed when latex is used to bind the filaments.
  • the thermoplastic material is applied to the upper layer on the underside of the carpet in a contact process.
  • a slotted nozzle or broad slotted nozzle can be used for that purpose. It is advantageous for the carpet to be transported past under an entry edge of an outflow slot of the slotted nozzle. While this is occurring, filaments bend down contrary to the transport direction. After passing the entry edge, they can stand upright again along the width of a pocket-like enlargement of an outflow slot of the slotted nozzle to receive the thermoplastic material.
  • the pocket on the outflow slot enables a longer contact between the grey goods and the still-flowing adhesive which is being applied, and hence better binding of the filaments.
  • a backing is laminated onto the underside of the applied thermoplastic material.
  • the backing can be a fleece or netting material.
  • To laminate the backing all that is needed is to apply a sufficiently thick coating of thermoplastic material onto the underside of the upper layer, and then to immediately laminate the backing.
  • the thermoplastic material bonds the backing to the underside. It is therefore not necessary to apply an additional coating (second application) for the backing. Hence an additional production step can be saved. A corresponding additional coating device can be dispensed with.
  • a carpet having the features of claim 12 , which has an upper layer with filaments, and a thermoplastic material applied to the upper layer on the underside of the carpet, which bonds the filaments in the carpet.
  • the carpet according to the invention is producible by at least one of the processes named above.
  • the thermoplastic material that penetrates into the nubs and/or filaments of the upper layer on the underside of the carpet gives the carpet adequate strength and durability to satisfy standardized demand tests.
  • Both felts and tufted carpets can have a supporting material, onto or into which filaments are introduced.
  • the thermoplastic material bonds the filaments additionally with the supporting material.
  • the supporting material may have a web structure consisting of a plurality of synthetic threads oriented in two different directions, where synthetic threads of the one direction are passed alternately over and under the synthetic threads of the other direction and hence are woven together.
  • the synthetic threads may also be yarns.
  • the pattern of the weave has holes. In this preferred version of the carpet, the bundles of filaments are passed through the holes in the pattern of the weave. That enables cost-effective and simple introduction of the filaments into the carpet, which are preferably bonded onto the structure of the weave by means of hot melt adhesive.
  • the supporting material may be a supporting fleece, for example a spundbond fleece. The supporting materials can vary greatly.
  • a coating device for coating carpets having an upper layer, where the coating device has transport elements to transport the carpet along the transport device and a thermoplastic applicator to apply a thermoplastic material to the underside of the upper layer of the carpet being transported past the thermoplastic applicator.
  • the coating device can be used to employ at least one of the methods described above and for coating at least one of the types of grey goods described above.
  • the coated grey goods preferably have a width of from less than one meter to several meters, and any length desired.
  • the coating device is especially well suited for coating long runs of carpeting, which are sold as rolled goods.
  • thermoplastic applicator is preferably positioned so that the thermoplastic material flows out beneath the thermoplastic applicator, preferably from a slotted nozzle, and is applied to the carpet which is positioned beneath the thermoplastic applicator.
  • the thermoplastic material flows out beneath the thermoplastic applicator, preferably from a slotted nozzle, and is applied to the carpet which is positioned beneath the thermoplastic applicator.
  • no additional means are needed to transfer the adhesive from the slotted nozzle to the carpet.
  • the carpet transported beneath the thermoplastic applicator is transportable and supportable by a coating roller.
  • an adhesive in particular hot melt adhesive
  • a first heating element is located before the thermoplastic applicator, and/or a second heating element in the transport direction after the thermoplastic applicator.
  • the two heating elements which are preferably IR radiators, are used, as described above, to preheat and post-heat the carpet being fed through beneath the adhesive applicator, in order to improve and support penetration of the hot melt adhesive into the underside of the upper layer.
  • thermoplastic applicator it has been found especially advantageous for the thermoplastic applicator to have a slotted nozzle for applying the thermoplastic material, in particular adhesive, preferably hot melt adhesive.
  • the slotted nozzle can have an outflow slot for the thermoplastic material, and before the outflow slot in the direction of transport a sloping entry edge and behind the outflow slot at least one pocket.
  • the sloping of the entry edge toward the carpet in the direction of transport enables uniform transporting of the carpet under the slotted nozzle, without the carpet getting caught.
  • the pocket located after the outflow aperture collects thermoplastic material, and also serves to form a longer contact surface between the thermoplastic material and the carpet being transported past.
  • the pocket enables the nubs and filaments to stand up and relax, or to open up again after passing the entry edge.
  • This special form of the slotted nozzle achieves especially firm binding of the filaments.
  • FIG. 1 a schematic cross section of a preferred version of a tufted carpet
  • FIG. 2 a schematic depiction of a preferred version of a coating device
  • FIG. 3 a cross section through a preferred version of a slotted nozzle
  • FIG. 4 a cross section through a preferred version of a felt carpet.
  • the carpet 1 according to the invention which is shown in FIG. 1 is a tufted carpet. It has a two-dimensional supporting material 2 , from which segments of filament bundles 3 protrude on the underside of the carpet. Additional segments of filament bundles 4 protrude from the supporting material 2 on the top side of the carpet. The segments of filament bundles 4 on the top side of the carpet and the supporting material 2 form an upper layer of the tufted carpet. Neighboring segments of filament bundles 3 on the underside of the carpet are joined into carpet loops 5 on the underside of the carpet. Neighboring segments of filament bundles 4 on the top side of the carpet are joined into carpet loops 6 on the top side of the carpet.
  • FIG. 1 shows an individual filament bundle 7 , portions of which form filament bundle segments on the underside of the carpet 3 and on the top side of the carpet 4 .
  • the filament bundle 7 is pulled alternately from above to below and vice versa through the supporting material 2 , thereby forming along its length the offset carpet loops on the underside 5 and top side 6 of the carpet.
  • a hot melt adhesive 8 is applied to the filament bundle segments 3 that protrude from the underside of the carpet and to the underside of the supporting material 2 .
  • the hot melt adhesive 8 partially or completely penetrates the filament bundle segments 3 on the underside of the carpet, and forms nubs.
  • the hot melt adhesive 8 bonds the filament bundle segment 3 firmly to the supporting material 2 , and on the other hand it firmly attaches the filament bundle segments 3 on the underside of the carpet together.
  • the hot melt adhesive 8 penetrates into the filament bundle segments 3 on the underside of the carpet, it bonds the individual filaments on the outer periphery of the filament bundle 7 together there, and thereby prevents individual filaments from being able to be pulled out of the filament bundle segments 3 on the underside of the carpet.
  • the supporting material 2 has a woven or braided structure (not drawn). In two directions that are perpendicular to each other, synthetic yarns are positioned parallel to each other in each of the two directions. The synthetic yarns of the one direction are alternately passed over and under the synthetic yarns of the other direction. After the binding of the nubs and filaments, a backing can be laminated onto the layer of adhesive on the underside of the carpet.
  • the filament bundles 7 are passed approximately vertically through the supporting material 2 at penetration points 9 .
  • the penetration points 8 are made by the holes formed in the braided structure, and the filament bundles 7 are passed through these holes.
  • the carpet loops 3 on the underside of the carpet form a space between themselves and the supporting material 2 , which is completely filled with hot melt adhesive 8 .
  • FIG. 2 shows a schematic representation of a coating device for coating a carpet 1 according to FIG. 1 .
  • the coating device has an adhesive applicator 10 which is intended for applying the hot melt adhesive to an underside of the carpet 1 .
  • the adhesive applicator 10 On its end nearest the carpet, which is the lower end in FIG. 2 , the adhesive applicator 10 has a slotted nozzle 11 through which the hot melt adhesive is applied over the surface of the carpet 1 which is running through under the adhesive applicator 10 , on the underside of the carpet material.
  • the carpet 1 which is running through under the adhesive applicator 10 is supported by a coating roller 12 , which is positioned below and opposite the adhesive applicator 10 . Between the adhesive applicator 10 and the coating roller 12 there is a small intermediate space through which the carpet 1 is transported.
  • the interval between coating roller 12 and adhesive applicator 10 is adjustable by adjusting the height of the adhesive applicator 10 .
  • the height adjustability of the adhesive applicator 10 is indicated by the double-ended arrow.
  • the application with the adhesive applicator 10 is contact application.
  • the transport direction of the carpet 1 is identified by the two single-ended arrows. Before the adhesive applicator 10 in the transport direction of the carpet 1 the underside of the carpet is uncoated, and after the adhesive applicator 10 in the transport direction the carpet 1 is coated with the hot melt adhesive 8 .
  • first infrared radiator 13 and a second infrared radiator 14 Positioned before and after the adhesive applicator 10 in the transport direction of the carpet 1 are a first infrared radiator 13 and a second infrared radiator 14 , respectively.
  • the purpose of the first infrared radiator 13 is to preheat the underside of the carpet.
  • the purpose of the second infrared radiator 14 positioned after the adhesive applicator 10 , is to post-heat the carpet 1 .
  • Preheating and post-heating the carpet enables the hot melt adhesive to remain in the fluid state for a longer time, and thus to penetrate deeper into the filament bundles and/or the structure of the weave. The depth of penetration can be controlled or influenced on the basis of the intensity of the post-heating and preheating.
  • first 15 and second 16 deflecting rollers Located before and after the support roller 12 in the transport direction of the carpet 1 are additional first 15 and second 16 deflecting rollers, which support the carpet 1 and bring it into the desired position.
  • FIG. 3 shows details of a slotted nozzle 11 according to the invention.
  • the adhesive applicator 10 has a slotted nozzle 11 .
  • the carpet 1 is transported in the direction indicated by the arrow. In this exemplary embodiment it is tufted carpeting fabric. However it is also possible with the slotted nozzle 10 according to the invention to coat felt, velour, or fleece fabrics.
  • the transport direction corresponds to the rear view in FIG. 2 .
  • the slotted nozzle 10 has an outflow slot 17 that extends across the entire width of the slotted nozzle 10 .
  • the hot melt adhesive emerges from the outflow slot.
  • Positioned before the outflow slot in the transport direction is an entry edge 18 .
  • the entry edge slopes down obliquely to the carpet 1 in the transport direction.
  • the carpet 1 does not get caught on the slotted nozzle 11 .
  • the outflow slot in the transport direction there is at least one pocket 19 on the end of the slotted nozzle 10 toward the carpet fabric.
  • Hot melt adhesive that flows from the outflow slot 17 is collected in the pocket 19 . Because of the longer contact surface with the carpet 1 formed by the pocket 19 , the hot melt glue can penetrate better into the nubs and filaments and their interstices.
  • the pocket At its end facing away from the outflow slot 17 the pocket has a tear-off edge 20 for the hot melt adhesive 8 .
  • the felt carpet shown in FIG. 4 can be produced by the coating device described above.
  • the felt has a pressed upper layer 21 of filaments. It is true that the filaments are joined or felted together with each other mechanically, thermally or chemically, but even here the filaments must be bound on the underside of the upper layer in order to make the felt carpet sufficiently durable. Only the application of the hot melt adhesive 8 gives the carpet sufficient strength.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Carpets (AREA)
  • Treatment Of Fiber Materials (AREA)
US10/570,429 2003-09-05 2004-09-06 Method for Coating Grey Goods for Carpeting Using a Broad Slotted Nozzle Abandoned US20070261777A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10341399A DE10341399A1 (de) 2003-09-05 2003-09-05 Verfahren zur Beschichtung einer Teppichrohware mittels einer Breitschlitzdüse
DE10341399.5 2003-09-05
PCT/EP2004/009925 WO2005024122A1 (fr) 2003-09-05 2004-09-06 Procede d'application d'un revetement sur une matiere brute pour tapis au moyen d'une filiere plate

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Publication Number Publication Date
US20070261777A1 true US20070261777A1 (en) 2007-11-15

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US10/570,429 Abandoned US20070261777A1 (en) 2003-09-05 2004-09-06 Method for Coating Grey Goods for Carpeting Using a Broad Slotted Nozzle

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US (1) US20070261777A1 (fr)
EP (1) EP1660715A1 (fr)
CN (1) CN1846027A (fr)
AU (1) AU2004270864A1 (fr)
DE (1) DE10341399A1 (fr)
WO (1) WO2005024122A1 (fr)

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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

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WO2005024122A1 (fr) 2005-03-17
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AU2004270864A1 (en) 2005-03-17
DE10341399A1 (de) 2005-04-07

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