EP0516119A2 - Hollow trilobal cross-section filament and spinneret plate for the manufacture of it - Google Patents
Hollow trilobal cross-section filament and spinneret plate for the manufacture of it Download PDFInfo
- Publication number
- EP0516119A2 EP0516119A2 EP92109046A EP92109046A EP0516119A2 EP 0516119 A2 EP0516119 A2 EP 0516119A2 EP 92109046 A EP92109046 A EP 92109046A EP 92109046 A EP92109046 A EP 92109046A EP 0516119 A2 EP0516119 A2 EP 0516119A2
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- EP
- European Patent Office
- Prior art keywords
- void
- filament
- carpet
- spinneret
- percent
- Prior art date
- Legal status (The legal status 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 status listed.)
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Classifications
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/24—Formation of filaments, threads, or the like with a hollow structure; Spinnerette packs therefor
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/253—Formation of filaments, threads, or the like with a non-circular cross section; Spinnerette packs therefor
Definitions
- the present invention relates to a multilobal synthetic polymeric filament having a single void extending approximately axially central, the total cross-sectional void area of the filament being between about 3 and about 10 percent void.
- the present invention furthermore relates to a carpet made from these filaments and a spinneret plate for the manufacture of these filaments.
- Trilobal fibers are known to provide cover superior to round cross-sections and it is known to make trilobal and pseudo-trilobal filaments (e.g., deltas, T-shapes).
- Exemplary are U.S. Patent No. 3,981,948 to Phillips, U.S. Patent No. 3,194,002 to Raynolds et al., U.S. Patent No. 2,939,201 to Holland, U.S. Patent No. 4,492,731 to Bankar et al. and Japanese Kokai 42-22574.
- U.S. Patent No. 4,648,830 to Peterson et al. discloses a spinneret for manufacturing hollow trilobal cross-section filaments.
- the filaments disclosed therein have one axially extending hole in each lobe.
- the present invention concerns a multilobal synthetic polymeric filament having a single approximately axially extending central void.
- the total cross-sectional void area of the filament is between about 3 and about 10 percent void.
- FIG. 1 is a cross-sectional plan view of a filament according to the present invention.
- FIG. 2 is a plan view of a spinneret useful to prepare the filament of FIG. 1.
- FIG. 3 is a plan view of another spinneret according to the present invention.
- modification ratio means the ratio of the radius R2 of the circumscribed circle to the radius R 1 of the inscribed circle as shown in FIG. 1.
- arm angle is the angle formed by extension of sides of an arm as shown in FIG. 1.
- FIG. 1 Depicted in FIG. 1 is a enlarged view of fiber 10 which is representative of the present invention.
- Filament 10 is trilobal having three (3) lobes, 11, 12 and 13 and axially extending, more or less central, void 15.
- filament 10 preferably has a modification ratio of between about 2 to about 6, more preferably about 2.0 to about 3.5 and an arm angle between about 7° and about 35°.
- the single approximately central void represents about 3 to about 10 percent, preferably 5 to 8 percent, of the total fiber volume measured including the volume of the void.
- FIG. 2 illustrates a spinneret useful for preparing the filament of the present invention.
- FIG. 2 is a plan view of one filament forming bore group of a spinneret of the present invention.
- Bore group 10 consists of three approximately "Y" shaped holes, 11, 11' and 11''. Each Y-shaped hole has long legs, 12, 12' ad 12'', and short legs, 13, 13' and 13''. The angle between legs 12 ad 12' is typically about 80° to about 160°, preferably about 100° to about 140° and need not be uniform.
- R 1 is preferably from about 0.5 to about 6 mm, more preferably about 1.5 to about 3.0 mm.
- R 2 is preferably from about 0.3 to about 2.5 mm but more preferably from about 0.5 to about 1.5 mm.
- each leg is typically between about 0.05 to about 0.15 mm, preferably about 0.06 to about 0.10 mm.
- the gap between legs 13 and 13' is about 0.05 to about 0.25 mm, preferably about 0.08 to about 0.20 mm.
- Legs 13 and 12 are of sufficient length to meet the limitations of R 1 and R 2 .
- any filament count yarn can be manufactured, to illustrate the present invention a spinneret is cut with 58 filament bore groups arranged in a circular layout with 8 rows and 6 to 9 capillaries per row of filament forming capillaries.
- Nylon 6 polymer is extruded at normal conventional spinning conditions into a quench stack, drawn, and taken up onto the package where it is further processed into typical carpet yarn.
- This carpet yarn is then tufted into a carpet using conventional tufting methods and the face yarn of the carpet is observed to have improved apparent bulk, luster, soil hiding, resiliency and appearance retention compared to previously known trilobal carpet yarns having no central void.
- FIG. 3 is a alternate form of the spinneret of the present invention.
- Filaments of the present invention may be prepared from synthetic thermoplastic polymers which are melt spinnable.
- Exemplary polymers are polyamides such as poly(hexamethylene adipamide), polycaprolactam and polyamides of bis(4-aminocyclohexyl)methane and linear aliphatic dicarboxylic acids containing 9, 10 and 12 carbon atoms; copolyamides; polyester such as poly (ethylene) terephthalic acid and copolymers thereof; and polyolefins such as polyethylene and polypropylene. Both heterogeneous and homogeneous mixtures of such polymers may also be used.
- the filaments can be prepared by known methods of spinning filaments. Molten polymer is spun through spinneret orifices shaped to provide the desired void volume and filament cross-sections under spinning conditions which give the desired denier. Specific spinning conditions and spinneret orifices, shapes and dimensions will vary depending upon the particular polymer and filament product being spun.
- the spinning and quenching conditions are modified appropriately.
- the percent void can generally be increased by more rapid quenching of the molten filaments by increasing the polymer melt viscosity.
- the filament ends of a length of yarn weighing from 6 to 8 grams are sealed by melting with a flame.
- the yarn is weighed.
- the yarn density is determined.
- the density of a solid filament yarn is also determined with the same method as a control. Percent void is then calculated by subtracting the density of the hollow filament yarn from the density of the solid control, dividing the result by the density of the solid filament yarn and then multiplying by 100.
- Fiber cross sections are magnified (300X) to determine the arm angle. Two tangent straight lines are drawn for each arm and the angle formed from the two straight lines is measured. The reported arm angle represents the average of ten measurements.
- Cut pile carpets are made by standard tufting methods from cabled and heatset yarns. After mock dyeing, the carpets are visually ranked for luster. Lower numbers represent higher degree of luster.
- a recording goniophotometer (HunterLab Goniophotometer GP-1R Serial 1050) is used to obtain reflectance readings. As illustrated in the following diagram, goniophotometers are used to take reflectance readings at varying angles. A fixed angle of incidence (60°) and varied angle of detection (-120 to 30°) is used. Yarn samples are wound in parallel on a 3.8 cm x 10.2 cm card. There are about four to five layers of yarn on each card. The measurement conditions are: VS1-3 VS2-2 neutral density filter #25 incident angle - 60° scanned from -120 to -30° Schematic diagram of the measurement components in a goniophotometer:
- Swivel chair test A carpet sample is cut to 134.6 cm x 121.9 cm. The carpet sample is taped to a platform with carpet tape. A metal chair with casters is filled with 45.4 kg weight and put onto the carpet. The chair is hooked to a motorized plunger rod and rotates on the carpet while the plunger rod cycles back and forth. The orientation of the carpet sample is periodically changed. At the end of 1,500 cycles, the degree of wear is assessed by a paired comparison.
- Paired comparison A paired comparison test is conducted using eleven observers. The objective of the examination is to compare two carpets at a time and to select a carpet sample that has better overall appearance after a fixed amount of wear. The data received from the observers is processed by using a preference table.
- S represents the score
- a i carpet sample i in a series
- a j carpet sample j in a series
- a spinneret having 58 filament capillaries is arranged in a circular layout with eight rows and 6 to 9 capillaries per row.
- the capillaries are formed generally according to FIG. 2 with appropriate design for the desired arm angle, percent void and modification ratio and are offset with respect to the capillaries of each next adjacent row.
- Commercial Nylon 6 polymer (with a relative viscosity of 2.7; measured at a concentration of 1 g per 100 ml in 96% by weight of sulfuric acid) is extruded with conventional spinning conditions into a quench stack, drawn, textured and taken up onto a package where it is further processed into typical carpet yarn.
- the carpet yarn is then tufted into a primary backing using conventional tufting methods to make samples 6, 7, 8 and d in the following tables.
- Samples A and C are untufted carpet yarn.
- the face yarn of the carpet sample exhibits excellent bulk, luster, soiling hiding, resiliency and appearance retention.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
- Artificial Filaments (AREA)
- Materials For Medical Uses (AREA)
Abstract
Description
- The present invention relates to a multilobal synthetic polymeric filament having a single void extending approximately axially central, the total cross-sectional void area of the filament being between about 3 and about 10 percent void.
- The present invention furthermore relates to a carpet made from these filaments and a spinneret plate for the manufacture of these filaments.
- For many uses of fibrous synthetic polymers, it is desirable to minimize the weight of fiber needed to spread over a area. This qualitative property of a fiber is known as "cover". Another quality of fibers for certain end uses (like for carpet yarn) is the fiber's ability to hide soil. Yet, while for some end uses it is important to obtain high cover and good soil hiding, sparkle and/or luster should not be sacrificed. For example, carpet yarns should provide the greatest cover and hide soil well, yet remain lustrous. Efforts to achieve a fabric having these characteristics have largely failed since fiber properties leading to soil hiding tend to lessen luster. Presently, Applicants are unaware of any fiber which effectively achieves all these qualities.
- Trilobal fibers are known to provide cover superior to round cross-sections and it is known to make trilobal and pseudo-trilobal filaments (e.g., deltas, T-shapes). Exemplary are U.S. Patent No. 3,981,948 to Phillips, U.S. Patent No. 3,194,002 to Raynolds et al., U.S. Patent No. 2,939,201 to Holland, U.S. Patent No. 4,492,731 to Bankar et al. and Japanese Kokai 42-22574.
- It is also known to provide voids in filaments and that many times these voids result in improved soiling hiding performance. U.S. Patent No. 3,745,061 to Champaneria et al. and U.S. Patent No. 4,407,889 to Gintis et al. show non-round filaments having one or more voids.
- It is known also to provide trilobal or pseudo-trilobal fibers which have one or more voids. Exemplary are U.S. Patent No. 3,095,258 to Scott, U.S. Patent No. 3,357,048 to Cobb, Jr., U.S. Patent No. 3,493,459 to McIntosh et al., U.S. Patent No. 3,558,420 to Opfell, U.S. Patent No. 4,279,053 to Payne et al., U.S. Patent No. 4,364,996 to Sugiyama, U.S. Patent No. 4,956,237 to Samuelson and British Patent No. 843,179 to Siemer et al.
- U.S. Patent No. 4,648,830 to Peterson et al. discloses a spinneret for manufacturing hollow trilobal cross-section filaments. The filaments disclosed therein have one axially extending hole in each lobe.
- To address the foregoing deficiencies, the present invention concerns a multilobal synthetic polymeric filament having a single approximately axially extending central void. The total cross-sectional void area of the filament is between about 3 and about 10 percent void.
- It is a object of the present invention to provide an improved hollow trilobal filament.
- We have found that this object is achieved by the filaments defined at the outset.
- We have also found a carpet made from these filaments and a spinneret plate for the manufacture of these filaments.
- Related objects and advantages will be apparent to the ordinarily skilled artisan after reading the following detailed description of the invention.
- FIG. 1 is a cross-sectional plan view of a filament according to the present invention.
- FIG. 2 is a plan view of a spinneret useful to prepare the filament of FIG. 1.
- FIG. 3 is a plan view of another spinneret according to the present invention.
- The term "modification ratio" (MR) means the ratio of the radius R₂ of the circumscribed circle to the radius R 1 of the inscribed circle as shown in FIG. 1. The term "arm angle" (AA) is the angle formed by extension of sides of an arm as shown in FIG. 1.
- Depicted in FIG. 1 is a enlarged view of
fiber 10 which is representative of the present invention.Filament 10 is trilobal having three (3) lobes, 11, 12 and 13 and axially extending, more or less central,void 15. - According to the present invention,
filament 10 preferably has a modification ratio of between about 2 to about 6, more preferably about 2.0 to about 3.5 and an arm angle between about 7° and about 35°. The single approximately central void represents about 3 to about 10 percent, preferably 5 to 8 percent, of the total fiber volume measured including the volume of the void. - FIG. 2 illustrates a spinneret useful for preparing the filament of the present invention.
- FIG. 2 is a plan view of one filament forming bore group of a spinneret of the present invention.
Bore group 10 consists of three approximately "Y" shaped holes, 11, 11' and 11''. Each Y-shaped hole has long legs, 12, 12' ad 12'', and short legs, 13, 13' and 13''. The angle betweenlegs 12 ad 12' is typically about 80° to about 160°, preferably about 100° to about 140° and need not be uniform. R 1 is preferably from about 0.5 to about 6 mm, more preferably about 1.5 to about 3.0 mm. R 2 is preferably from about 0.3 to about 2.5 mm but more preferably from about 0.5 to about 1.5 mm. The width of each leg is typically between about 0.05 to about 0.15 mm, preferably about 0.06 to about 0.10 mm. The gap betweenlegs 13 and 13' is about 0.05 to about 0.25 mm, preferably about 0.08 to about 0.20 mm.Legs - Although any filament count yarn can be manufactured, to illustrate the present invention a spinneret is cut with 58 filament bore groups arranged in a circular layout with 8 rows and 6 to 9 capillaries per row of filament forming capillaries. Nylon 6 polymer is extruded at normal conventional spinning conditions into a quench stack, drawn, and taken up onto the package where it is further processed into typical carpet yarn. This carpet yarn is then tufted into a carpet using conventional tufting methods and the face yarn of the carpet is observed to have improved apparent bulk, luster, soil hiding, resiliency and appearance retention compared to previously known trilobal carpet yarns having no central void.
- FIG. 3 is a alternate form of the spinneret of the present invention.
- Filaments of the present invention may be prepared from synthetic thermoplastic polymers which are melt spinnable. Exemplary polymers are polyamides such as poly(hexamethylene adipamide), polycaprolactam and polyamides of bis(4-aminocyclohexyl)methane and linear aliphatic dicarboxylic acids containing 9, 10 and 12 carbon atoms; copolyamides; polyester such as poly (ethylene) terephthalic acid and copolymers thereof; and polyolefins such as polyethylene and polypropylene. Both heterogeneous and homogeneous mixtures of such polymers may also be used.
- As is apparent to one ordinarily skilled in the art, the filaments can be prepared by known methods of spinning filaments. Molten polymer is spun through spinneret orifices shaped to provide the desired void volume and filament cross-sections under spinning conditions which give the desired denier. Specific spinning conditions and spinneret orifices, shapes and dimensions will vary depending upon the particular polymer and filament product being spun.
- To achieve the desired percent void, the spinning and quenching conditions are modified appropriately. For example, the percent void can generally be increased by more rapid quenching of the molten filaments by increasing the polymer melt viscosity.
- The filament ends of a length of yarn weighing from 6 to 8 grams are sealed by melting with a flame. The yarn is weighed. Using a conventional pycnometer the yarn density is determined. The density of a solid filament yarn is also determined with the same method as a control. Percent void is then calculated by subtracting the density of the hollow filament yarn from the density of the solid control, dividing the result by the density of the solid filament yarn and then multiplying by 100.
- 0.91 m x 1.83 m mock-dyed carpet samles, made from fibers with various cross-sections (of interest), are installed in a heavily traveled corridor for 50,000 passes. The samples are then cleaned with a standard vacuum cleaner and visually ranked for degree of soiling. Lower numbers represent less degree of soiling.
- Fiber cross sections are magnified (300X) to determine the arm angle. Two tangent straight lines are drawn for each arm and the angle formed from the two straight lines is measured. The reported arm angle represents the average of ten measurements.
- For carpet:
Cut pile carpets are made by standard tufting methods from cabled and heatset yarns. After mock dyeing, the carpets are visually ranked for luster. Lower numbers represent higher degree of luster. - For yarn:
A recording goniophotometer (HunterLab Goniophotometer GP-1R Serial 1050) is used to obtain reflectance readings. As illustrated in the following diagram, goniophotometers are used to take reflectance readings at varying angles. A fixed angle of incidence (60°) and varied angle of detection (-120 to 30°) is used. Yarn samples are wound in parallel on a 3.8 cm x 10.2 cm card. There are about four to five layers of yarn on each card. The measurement conditions are:
VS1-3
VS2-2
neutral density filter #25
incident angle - 60°
scanned from -120 to -30°
Schematic diagram of the measurement components in a goniophotometer: -
- Two types of samples, one heatset and one not, are bulked in hot water (99°C) for thirty minutes, dried and conditioned (20°C, 65% RH) overnight. A length of each yarn weighing about four grams is collected and its exact weight determined. Individual specimens are fluffed by hand and placed in a Teflon cylinder (d = 4 cm, h = 20 cm) loosely. An Instron instrument is used to measure the space a sample occupies at 9/10 full scale load (9,000 g). Specific volume of the sample is calculated and expressed in cc/g. This procedure is repeated three times for each sample. The average of the three measurements is reported.
- Swivel chair test:
A carpet sample is cut to 134.6 cm x 121.9 cm. The carpet sample is taped to a platform with carpet tape. A metal chair with casters is filled with 45.4 kg weight and put onto the carpet. The chair is hooked to a motorized plunger rod and rotates on the carpet while the plunger rod cycles back and forth. The orientation of the carpet sample is periodically changed. At the end of 1,500 cycles, the degree of wear is assessed by a paired comparison. - Paired comparison:
A paired comparison test is conducted using eleven observers. The objective of the examination is to compare two carpets at a time and to select a carpet sample that has better overall appearance after a fixed amount of wear. The data received from the observers is processed by using a preference table. The observer's entry is treated in the following way:
S represents the score
A i represents carpet sample i in a series
A j represents carpet sample j in a series
t represents the total number of samples in the paired comparison evaluation
The preference table for paired comparison evaluation of five samples: - A spinneret having 58 filament capillaries is arranged in a circular layout with eight rows and 6 to 9 capillaries per row. The capillaries are formed generally according to FIG. 2 with appropriate design for the desired arm angle, percent void and modification ratio and are offset with respect to the capillaries of each next adjacent row. Commercial Nylon 6 polymer (with a relative viscosity of 2.7; measured at a concentration of 1 g per 100 ml in 96% by weight of sulfuric acid) is extruded with conventional spinning conditions into a quench stack, drawn, textured and taken up onto a package where it is further processed into typical carpet yarn. The spinning conditions were as follows: (1) extruder: melt temperature = 262°C, pressure = 1800 psig = 12.4 MPa; (2) throughput: 207 g/min; (3) texture pressure: 94 psig = 648 kPa; (4) texture temperature = 250°C; (5)
Duo 2 speed = 2109 m/min; (6)Duo 2 temperature = 160°C; (7)Duo 1 speed = 611 m/min; (8)Duo 1 temperature = 50°C; (9) Duo 3 speed = 1729 m/min; (10) FOY = 1.2%; (11) winding tension = 200 g; (12) winding speed = 1699 m/min; (13) denier = 1160. The carpet yarn is then tufted into a primary backing using conventional tufting methods to make samples 6, 7, 8 and d in the following tables. Samples A and C are untufted carpet yarn. The face yarn of the carpet sample exhibits excellent bulk, luster, soiling hiding, resiliency and appearance retention. - U.S. Patent No. 4,492,731 to Bankar et al. is followed to make
samples 2,3,4, 5, C, b and c below.Samples 1 and a are other solid trilobal cross-sections.Table 2 ID Twist (turn/ cm) MR Arm Angle Denier Cover (cc/g) Void (%) Luster Soiling 1 0 2.6 21 16 4.2 0 2 3 2 0 3.3 19 16 4.6 0 4 4 3 0 3.6 14 16 4.9 0 4 4 4 0 2.8 28 16 4.6 0 2 3 5 0 3.5 20 16 4.8 0 4 4 6 0 2.5 35 20 5.2 6 1 1 7 0 3.1 11 20 6.2 5 3 2 8 0 5.7 7 20 6.7 5 4 3 Table 3 ID Twist (turn/cm) MR Cover (cc/g) Luster By Photometer A 0.6 2.6 4.9 67 1.4 4.0 C 0.6 2.6 4.4 66 1.4 3.7 - The statistical analysis of total scores from the paired comparison test (11 observers) on the swivel chair worn (1,500 cycles) tufted carpet tiles (two-ply heatset, 3.75 tpi, 1/10 gauge tufter, 0.46 cm pile height, 881.6 g/m² is listed in the following Table 4.
Table 4 ID Twist (turn/cm MR Arm Angle Denier Cover (cc/g) Void (%) Luster Wear Score a 1.5 2.5 21 19 4.3 0 2 2.45 b 1.5 3.0 14 19 5.0 0 3 2.59 c 1.5 3.1 21 19 5.2 0 2 1.64 d 1.5 2.8 24 19 5.7 6 1 7.09
Claims (4)
- A multilobal synthetic polymeric filament having a single void extending approximately axially central, the total cross-sectional void area of the filament being between about 3 and about 10 percent void.
- A multilobal synthetic filament having a single void extending approximately axially central, a total cross-sectional void area between about 3 and about 10 percent void, a modification ratio between about 2 and about 6, and an arm angle between about 7° and about 35°.
- A carpet made from filaments according to claim 1.
- A spinneret plate for the manufacture of triobal fiber with an approximately central axially extending void, said spinneret having at least one filament forming bore group having a center and said bore group having three openings, each of said openings being approximately Y-shaped with one long leg defining an axis and the axis of each long leg converging on the center of the bore group and said opening having two shorter legs, each of the shorter legs of the same Y being divergent toward said center.
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US70842391A | 1991-05-31 | 1991-05-31 | |
US07/708,156 US5208107A (en) | 1991-05-31 | 1991-05-31 | Hollow trilobal cross-section filament |
US708156 | 1991-05-31 | ||
US708423 | 1991-05-31 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0516119A2 true EP0516119A2 (en) | 1992-12-02 |
EP0516119A3 EP0516119A3 (en) | 1993-08-04 |
EP0516119B1 EP0516119B1 (en) | 1998-01-21 |
Family
ID=27108025
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19920109046 Expired - Lifetime EP0516119B1 (en) | 1991-05-31 | 1992-05-29 | Hollow trilobal cross-section filament and spinneret plate for the manufacture of it |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP0516119B1 (en) |
CZ (1) | CZ161992A3 (en) |
DE (1) | DE69224103T2 (en) |
ES (1) | ES2111010T3 (en) |
SK (1) | SK161992A3 (en) |
YU (1) | YU48646B (en) |
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5322736A (en) * | 1993-06-24 | 1994-06-21 | Alliedsignal Inc. | Hollow-trilobal cross-section filaments |
WO1994013869A1 (en) * | 1992-12-08 | 1994-06-23 | Basf Corporation | Hollow trilobal cross section fiber |
JPH06240529A (en) * | 1992-12-10 | 1994-08-30 | Basf Corp | Blended carpet yarn |
GB2295833A (en) * | 1994-12-08 | 1996-06-12 | Appleton Mills | Papermaking fabric with yarns having a multi-lobed cross-section |
US6048615A (en) * | 1998-01-30 | 2000-04-11 | E. I. Du Pont De Nemours And Company | Filament having a trilobal cross-section and a trilobal void |
WO2002016682A1 (en) * | 2000-08-18 | 2002-02-28 | Honeywell International Inc. | Abrasion resistant, high bulk fiber |
US6447903B1 (en) | 1998-08-27 | 2002-09-10 | E. I. Du Pont De Nemours And Company | Multilobal hollow filaments having stiffening ribs and stiffening webs |
US6589653B2 (en) | 2001-08-08 | 2003-07-08 | E. I. Du Pont De Nemours And Company | Filament having a quadrilobate exterior cross-section and a four-sided void |
BE1014786A3 (en) * | 2001-05-14 | 2004-04-06 | Hyosung Corp | Bcf carpet yarn poly (terephthalate trimethylene) a non circular cross section and method for preparation thereof. |
BE1014787A3 (en) * | 2001-05-14 | 2004-04-06 | Hyosung Corp | Preparation method of carpet made of poly (terephthalate trimethylene). |
EP1541725A1 (en) * | 2003-11-19 | 2005-06-15 | INVISTA Technologies S.à.r.l. | Bulked continuous filament having a three-sided exterior cross-section and a convex six-sided central void and yarn and carpet produced therefrom |
EP1541724A1 (en) * | 2003-11-19 | 2005-06-15 | INVISTA Technologies S.à.r.l. | Spinneret plate for producing a bulked continuous filament having a three-sided exterior cross-section and a convex six-sided central void |
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FR1497744A (en) * | 1965-10-21 | 1967-10-13 | Inventa Ag | Spinning plate and spinning process using this plate |
GB1160263A (en) * | 1965-10-15 | 1969-08-06 | Ici Ltd | Process and Apparatus for the Manufacture of Hollow Filaments |
US4346053A (en) * | 1979-02-21 | 1982-08-24 | American Cyanamid Company | Process for melt-spinning hollow fibers |
US4492731A (en) * | 1982-11-22 | 1985-01-08 | E. I. Du Pont De Nemours And Company | Trilobal filaments exhibiting high bulk and sparkle |
EP0201812A2 (en) * | 1985-05-13 | 1986-11-20 | AlliedSignal Inc. | Hollow trilobal cross-section filament |
JPS62299508A (en) * | 1986-06-18 | 1987-12-26 | Teijin Ltd | Special bulky yarn and spinneret therefor |
JPH01298210A (en) * | 1988-05-20 | 1989-12-01 | Teijin Ltd | Modified hollow yarn of polyester and production thereof |
JPH01306606A (en) * | 1988-06-01 | 1989-12-11 | Teijin Ltd | Spinneret for hollow fiber |
-
1992
- 1992-05-28 CZ CS921619A patent/CZ161992A3/en unknown
- 1992-05-28 SK SK161992A patent/SK161992A3/en unknown
- 1992-05-29 DE DE1992624103 patent/DE69224103T2/en not_active Expired - Fee Related
- 1992-05-29 ES ES92109046T patent/ES2111010T3/en not_active Expired - Lifetime
- 1992-05-29 EP EP19920109046 patent/EP0516119B1/en not_active Expired - Lifetime
- 1992-06-01 YU YU56992A patent/YU48646B/en unknown
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
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GB1160263A (en) * | 1965-10-15 | 1969-08-06 | Ici Ltd | Process and Apparatus for the Manufacture of Hollow Filaments |
FR1497744A (en) * | 1965-10-21 | 1967-10-13 | Inventa Ag | Spinning plate and spinning process using this plate |
US4346053A (en) * | 1979-02-21 | 1982-08-24 | American Cyanamid Company | Process for melt-spinning hollow fibers |
US4492731A (en) * | 1982-11-22 | 1985-01-08 | E. I. Du Pont De Nemours And Company | Trilobal filaments exhibiting high bulk and sparkle |
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Cited By (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1994013869A1 (en) * | 1992-12-08 | 1994-06-23 | Basf Corporation | Hollow trilobal cross section fiber |
JPH06240529A (en) * | 1992-12-10 | 1994-08-30 | Basf Corp | Blended carpet yarn |
US5322736A (en) * | 1993-06-24 | 1994-06-21 | Alliedsignal Inc. | Hollow-trilobal cross-section filaments |
WO1995000685A1 (en) * | 1993-06-24 | 1995-01-05 | Alliedsignal Inc. | Hollow trilobal cross-section filaments |
GB2295833A (en) * | 1994-12-08 | 1996-06-12 | Appleton Mills | Papermaking fabric with yarns having a multi-lobed cross-section |
US6048615A (en) * | 1998-01-30 | 2000-04-11 | E. I. Du Pont De Nemours And Company | Filament having a trilobal cross-section and a trilobal void |
US6660377B2 (en) | 1998-08-27 | 2003-12-09 | E. I. Du Pont De Nemours And Company | Multilobal hollow filament carpet yarn having stiffening ribs and stiffening webs and spinneret for producing the same |
US6447903B1 (en) | 1998-08-27 | 2002-09-10 | E. I. Du Pont De Nemours And Company | Multilobal hollow filaments having stiffening ribs and stiffening webs |
WO2002016682A1 (en) * | 2000-08-18 | 2002-02-28 | Honeywell International Inc. | Abrasion resistant, high bulk fiber |
BE1014786A3 (en) * | 2001-05-14 | 2004-04-06 | Hyosung Corp | Bcf carpet yarn poly (terephthalate trimethylene) a non circular cross section and method for preparation thereof. |
BE1014787A3 (en) * | 2001-05-14 | 2004-04-06 | Hyosung Corp | Preparation method of carpet made of poly (terephthalate trimethylene). |
US6589653B2 (en) | 2001-08-08 | 2003-07-08 | E. I. Du Pont De Nemours And Company | Filament having a quadrilobate exterior cross-section and a four-sided void |
EP1541725A1 (en) * | 2003-11-19 | 2005-06-15 | INVISTA Technologies S.à.r.l. | Bulked continuous filament having a three-sided exterior cross-section and a convex six-sided central void and yarn and carpet produced therefrom |
EP1541724A1 (en) * | 2003-11-19 | 2005-06-15 | INVISTA Technologies S.à.r.l. | Spinneret plate for producing a bulked continuous filament having a three-sided exterior cross-section and a convex six-sided central void |
Also Published As
Publication number | Publication date |
---|---|
YU48646B (en) | 1999-06-15 |
SK161992A3 (en) | 1994-12-07 |
ES2111010T3 (en) | 1998-03-01 |
DE69224103T2 (en) | 1998-05-07 |
EP0516119A3 (en) | 1993-08-04 |
YU56992A (en) | 1996-01-09 |
DE69224103D1 (en) | 1998-02-26 |
CZ161992A3 (en) | 1993-12-15 |
EP0516119B1 (en) | 1998-01-21 |
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