US4350006A — Synthetic filaments and the like

Claim 1

Independent Claim 45 words

A bundle of ultrafine filaments composed of a fiber-forming polymer which is characterized in that said bundle comprises at least 10 substantially parallel ultrafine filaments each of which is continuous along the longitudinal axes of said bundle and has a denier of less than 0.1.

Claim 2

Dependent Claim 45 words

A bundle of ultrafine filaments composed of a fiber-forming polymer which is characterized in that said bundle comprises at least 10 substantially parallel ultrafine filaments each of which is continuous along the longitudinal axes of said bundle and has a denier of less than 0.1.

Claim 3

Dependent Claim 26 words

A bundle of ultrafine filaments according to claim 1, wherein each of said ultrafine filaments has a substantially rounded cross section along its entire longitudinal axis.

Claim 4

Dependent Claim 18 words

The bundle of ultrafine filaments according to claim 1, wherein said ultrafine filaments have substantially the same denier.

Claim 5

Dependent Claim 18 words

The bundle of ultrafine filaments according to claim 2, wherein said ultrafine filaments have substantially the same denier.

Claim 6

Dependent Claim 26 words

The bundle of ultrafine filaments according to claim 1, wherein the fiber-forming polymer molecules are oriented in the longitudinal direction in each of said ultrafine filaments.

Claim 7

Dependent Claim 20 words

The bundle of ultrafine filaments according to claim 1, wherein the number of said ultrafine filaments is 10 to 10,000.

Claim 8

Dependent Claim 16 words

The bundle of ultrafine filaments according to claim 1, wherein said fiber-forming polymer is polyethylene terephthalate.

Claim 9

Dependent Claim 99 words

A process for the production of a bundle of ultrafine filaments each having a denier of less than 0.1 composed of a fiber-forming polymer, which comprises discharging two molten fiber-formimg polymers having different compositions as at least one group, each said group consisting of at least 10 separate streams, each stream being in a sheath-and-core configuration wherein one polymer is covered by the other, combining said stream groups and spinning them together to form a continuous as-spun filament, and dissolving the sheath polymer of the filament with a solvent which dissolves the sheath polymer but not the core polymer.

Claim 10

Dependent Claim 99 words

A process for the production of a bundle of ultrafine filaments each having a denier of less than 0.1 composed of a fiber-forming polymer, which comprises discharging two molten fiber-formimg polymers having different compositions as at least one group, each said group consisting of at least 10 separate streams, each stream being in a sheath-and-core configuration wherein one polymer is covered by the other, combining said stream groups and spinning them together to form a continuous as-spun filament, and dissolving the sheath polymer of the filament with a solvent which dissolves the sheath polymer but not the core polymer.

Claim 11

Dependent Claim 29 words

The process according to claim 8, wherein said as-spun filament is drawn without breaking the filament, and thereafter, the sheath polymer of the filament is dissolved with the solvent.

Claim 12

Dependent Claim 147 words

In a yarn consisting of a plurality of composite filaments wherein each filament includes at least two different incompatible synthetic linear high polymers, and wherein one polymer functions as a matrix and said other polymer consists of a multiplicity of continuous ultrafine cores distributed substantially uniformly throughout the longitudinal body of the matrix, and wherein each core is characterized by its uniformity in a cross-sectional dimension, and the cross-sectional dimensions from core to core being of the same order of magnitude, the improvement wherein: a. said cores are substantially parallel to one another when said filament is viewed in longitudinal section; b. said cores are substantially rounded and substantially surrounded by other cores when viewed in transverse cross section; and c. each filament having a constant number of cores throughout its length wherein the number of said cores is at least 10 and not greater than 10,000.

Claim 13

Dependent Claim 147 words

In a yarn consisting of a plurality of composite filaments wherein each filament includes at least two different incompatible synthetic linear high polymers, and wherein one polymer functions as a matrix and said other polymer consists of a multiplicity of continuous ultrafine cores distributed substantially uniformly throughout the longitudinal body of the matrix, and wherein each core is characterized by its uniformity in a cross-sectional dimension, and the cross-sectional dimensions from core to core being of the same order of magnitude, the improvement wherein: a. said cores are substantially parallel to one another when said filament is viewed in longitudinal section; b. said cores are substantially rounded and substantially surrounded by other cores when viewed in transverse cross section; and c. each filament having a constant number of cores throughout its length wherein the number of said cores is at least 10 and not greater than 10,000.

Claim 14

Dependent Claim 27 words

A yarn, as recited in claim 10, wherein said cores are spaced apart from each other, and wherein each core is completely adjacently enclosed by said matrix.

Claim 15

Dependent Claim 28 words

A yarn, as recited in claim 11, wherein said matrix is distributed around each core by substantially the same thickness as measured from core center to core center.

Claim 16

Dependent Claim 34 words

A yarn, as recited in claim 10, wherein the filament is substantially homogeneous, and any flexing stress is exerted substantially uniformly throughout the filament regardless of the direction in which the stress is exerted.

Claim 17

Dependent Claim 19 words

The yarn as recited in claim 10, wherein the denier of each of said cores is less than 0.1.

Claim 18

Dependent Claim 18 words

A yarn as recited in claim 10, wherein the ratio of cores to matrix is at least 11:25.

Claim 19

Dependent Claim 61 words

A yarn as recited in claim 10, wherein the filament includes a group constructed of an assembly of 10 to 10,000 conjugated filamentary units in which each core island is covered by the matrix, and wherein the cores are close to each other so that they contact each other without any gap therebetween, each core contacting its neighor along a line.

Claim 20

Dependent Claim 14 words

A yarn as recited in claim 10 wherein said core includes a polyamide polymer.

Claim 21

Dependent Claim 14 words

A yarn as recited in claim 10, wherein said cores include a polyester polymer.

Claim 22

Dependent Claim 14 words

A yarn as recited in claim 10, wherein said cores include a polyacrylic polymer.

Claim 23

Dependent Claim 14 words

A yarn as recited in claim 10, wherein said cores include a polyurethane polymer.

Claim 24

Dependent Claim 14 words

A yarn as recited in claim 10, wherein said cores include a polyolefin polymer.

Claim 25

Dependent Claim 14 words

A yarn as recited in claim 10, wherein said cores include a copolyamide polymer.

Claim 26

Dependent Claim 14 words

A yarn as recited in claim 10, wherein said cores include a copolyester polymer.

Claim 27

Dependent Claim 152 words

Improved synthetic conjugate filaments wherein each filament comprises at least two different polymer elements, one of the polymer elements being, in longitudinal view, uniformly continuous as substantially parallel lines of many ultra-fine roundish filaments without branch, interbond and short fibril in the other polymer element, and being, in each cross section view, distributed substantially over the cross section as fine islands in the sea of said latter polymer elements without overlapped ribbon layers and convolution layers, characterized in that: (1) when seen in any cross-sectional view of the filaments, a. a number of islands are dotted uniformly all over the sea and in both the center and periphery parts of the filaments; b. the dotted islands of the inner part of the filaments are surrounded by the other islands of the outer part of the filament, and c. the number of the islands is within the range of from 10 to 10,000.

Claim 28

Dependent Claim 152 words

Improved synthetic conjugate filaments wherein each filament comprises at least two different polymer elements, one of the polymer elements being, in longitudinal view, uniformly continuous as substantially parallel lines of many ultra-fine roundish filaments without branch, interbond and short fibril in the other polymer element, and being, in each cross section view, distributed substantially over the cross section as fine islands in the sea of said latter polymer elements without overlapped ribbon layers and convolution layers, characterized in that: (1) when seen in any cross-sectional view of the filaments, a. a number of islands are dotted uniformly all over the sea and in both the center and periphery parts of the filaments; b. the dotted islands of the inner part of the filaments are surrounded by the other islands of the outer part of the filament, and c. the number of the islands is within the range of from 10 to 10,000.

Claim 29

Dependent Claim 164 words

In a yarn consisting of a plurality of composite filaments wherein each filament includes at least two different incompatible synthetic linear high polymers, and wherein one polymer functions as matrix and said other polymer consists of a multiplicity of continuous ultra-fine cores distributed substantially uniformly throughout the longitudinal body of the matrix, and wherein each core is characterized by its uniformity in cross sectional dimension, and the cross sectional dimensions from core to core being of the same order of magnitude, the improvement wherein: a. said cores are substantially parallel to one another when said filament is viewed in longitudinal section; b. said cores are substantially rounded and substantially surrounded by other cores when viewed in transverse cross section; and c. each filament has a constant number of cores throughout its length wherein the number of said cores is at least ten and not greater than 10,000, and wherein a plurality of said cores are in contact with other cores and with said matrix.

Claim 30

Dependent Claim 164 words

In a yarn consisting of a plurality of composite filaments wherein each filament includes at least two different incompatible synthetic linear high polymers, and wherein one polymer functions as matrix and said other polymer consists of a multiplicity of continuous ultra-fine cores distributed substantially uniformly throughout the longitudinal body of the matrix, and wherein each core is characterized by its uniformity in cross sectional dimension, and the cross sectional dimensions from core to core being of the same order of magnitude, the improvement wherein: a. said cores are substantially parallel to one another when said filament is viewed in longitudinal section; b. said cores are substantially rounded and substantially surrounded by other cores when viewed in transverse cross section; and c. each filament has a constant number of cores throughout its length wherein the number of said cores is at least ten and not greater than 10,000, and wherein a plurality of said cores are in contact with other cores and with said matrix.

Claim 31

Dependent Claim 128 words

A composite filament comprising at least two different incompatible synthetic linear high polymers, wherein one polymer functions as a matrix and said other polymer consists of a plurality of continuous ultra-fine cores distributed substantially uniformly throughout the longitudinal body of the matrix, and wherein each core is characterized by its uniformity in cross sectional dimension, and the cross sectional dimensions from core to core being of the same order of magnitude, the improvement wherein: a. said cores are substantially parallel to one another when said filament is viewed in longitudinal section; b. said filament having a constant number of cores throughout its length, c. and wherein some of said cores are in contact with other cores and wherein the remaining cores are completely adjacently surrounded by said matrix.

Claim 32

Dependent Claim 128 words

A composite filament comprising at least two different incompatible synthetic linear high polymers, wherein one polymer functions as a matrix and said other polymer consists of a plurality of continuous ultra-fine cores distributed substantially uniformly throughout the longitudinal body of the matrix, and wherein each core is characterized by its uniformity in cross sectional dimension, and the cross sectional dimensions from core to core being of the same order of magnitude, the improvement wherein: a. said cores are substantially parallel to one another when said filament is viewed in longitudinal section; b. said filament having a constant number of cores throughout its length, c. and wherein some of said cores are in contact with other cores and wherein the remaining cores are completely adjacently surrounded by said matrix.

Claim 33

Dependent Claim 14 words

Composite filament as recited in claim 26, wherein at least 10 cores are provided.

Claim 34

Dependent Claim 19 words

Composite filament as recited in claim 26, wherein the denier of each of said cores is less than 0.1.

Claim 35

Dependent Claim 14 words

Composite filament as recited in claim 26, wherein said cores comprise a polyester polymer.

Claim 36

Dependent Claim 14 words

Composite filament as recited in claim 26, wherein said matrix comprises a polyamide polymer.

Claim 37

Dependent Claim 19 words

Composite filament as recited in claim 26, wherein said cores are substantially rounded when viewed in transverse cross section.

Claim 38

Dependent Claim 96 words

In a yarn consisting of a plurality of composite filaments wherein each filament includes at least two different incompatible synthetic linear high polymers, and wherein one polymer functions as a matrix and said other polymer consists of a multiplicity of continuous ultra fine cores distributed substantially uniformly throughout the longitudinal body of the matrix, and wherein each core is characterized by its uniformity in cross sectional dimension, and the cross sectional dimensions from core to core being of the same order of magnitude, the improvement wherein each of said filaments has the same number of cores.

Claim 39

Dependent Claim 96 words

In a yarn consisting of a plurality of composite filaments wherein each filament includes at least two different incompatible synthetic linear high polymers, and wherein one polymer functions as a matrix and said other polymer consists of a multiplicity of continuous ultra fine cores distributed substantially uniformly throughout the longitudinal body of the matrix, and wherein each core is characterized by its uniformity in cross sectional dimension, and the cross sectional dimensions from core to core being of the same order of magnitude, the improvement wherein each of said filaments has the same number of cores.

Claim 40

Dependent Claim 23 words

A yarn as recited in claim 32, wherein said cores substantially parallel to one another when said filament is viewed in longitudinal section.

Claim 41

Dependent Claim 16 words

A yarn as recited in claim 32, wherein said cores all have substantially the same denier.

Claim 42

Dependent Claim 21 words

A yarn as recited in claim 32, wherein the number of cores in each of said filaments is less than 10.

Claim 43

Dependent Claim 21 words

A yarn as recited in claim 32, wherein the number of cores in each of said filaments is 10 to 10,000.

Claim 44

Dependent Claim 28 words

A yarn as recited in claim 32, wherein said cores are spaced apart from each other and wherein each said core is completely adjacently enclosed by said matrix.

Claim 45

Dependent Claim 23 words

A yarn as recited in claim 32, wherein a plurality of said cores are in contact with other cores and with said matrix.

Claim 46

Dependent Claim 35 words

A yarn as recited in claim 32, wherein each said filament is substantially homogenous, and any flexing stress is exerted substantially uniformly throughout the filament regardless of the direction in which the stress is exerted.

Claim 47

Dependent Claim 23 words

A yarn as recited in claim 32, wherein the ratio of cores to matrix in each of said filaments is at least 11:25.

Claim 48

Dependent Claim 14 words

A yarn as recited in claim 32, wherein said cores comprise a polyamide polymer.

Claim 49

Dependent Claim 14 words

A yarn as recited in claim 32, wherein said cores comprise a polyester polymer.

Claim 50

Dependent Claim 14 words

A yarn as recited in claim 32, wherein said cores comprise a polyacrylic polymer.

Claim 51

Dependent Claim 14 words

A yarn as recited in claim 32, wherein said cores comprise a polyurethane polymer.

Claim 52

Dependent Claim 14 words

A yarn as recited in claim 32, wherein said cores comprise a polyolefin fiber.

Claim 53

Dependent Claim 14 words

A yarn as recited in claim 32, wherein said cores comprise a copolyamide polymer.

Claim 54

Dependent Claim 14 words

A yarn as recited in claim 32, wherein said cores comprise a copolyester polymer.

Claim 55

Dependent Claim 14 words

A yarn as recited in claim 32, wherein said matrix comprises a polyamide polymer.

Claim 56

Dependent Claim 23 words

A yarn as recited in claim 32, wherein each said filament is free of irregularly shaped cores at the periphery of said filament.

Claim 57

Dependent Claim 30 words

A yarn as recited in claim 32, further comprising distribution of said cores on a plurality of concentric circles as seen in any transverse cross sectional view of said filament.

Claim 58

Dependent Claim 100 words

In a yarn consisting of a plurality of composite filaments wherein each filament includes at least two different incompatible synthetic linear high polymers, and wherein one polymer functions as a matrix said other polyer consists of a multiplicity of continuous ultra fine cores distributed substantially uniformly throughout the longitudinal body of the matrix, and wherein each core is characterized by its uniformity in cross sectional dimension, and the cross sectional dimensions from core to core being of the same order of magnitude, the improvement wherein each said filament is free of irregularly shaped cores at the periphery of said filament.

Claim 59

Dependent Claim 100 words

In a yarn consisting of a plurality of composite filaments wherein each filament includes at least two different incompatible synthetic linear high polymers, and wherein one polymer functions as a matrix said other polyer consists of a multiplicity of continuous ultra fine cores distributed substantially uniformly throughout the longitudinal body of the matrix, and wherein each core is characterized by its uniformity in cross sectional dimension, and the cross sectional dimensions from core to core being of the same order of magnitude, the improvement wherein each said filament is free of irregularly shaped cores at the periphery of said filament.

Claim 60

Dependent Claim 24 words

A yarn as recited in claim 51, wherein said cores are substantially parallel to one another when said filament is viewed in longitudinal section.

Claim 61

Dependent Claim 16 words

A yarn as recited in claim 51, wherein said cores all have substantially the same denier.

Claim 62

Dependent Claim 20 words

A yarn as recited in claim 51, wherein the number of said cores in each filament is less than 10.

Claim 63

Dependent Claim 20 words

A yarn as recited in claim 51, wherein the number of said cores in each filament is 10 to 10,000.

Claim 64

Dependent Claim 28 words

A yarn as recited in claim 51, wherein said cores are spaced apart from each other and wherein each said core is completely adjacently enclosed by said matrix.

Claim 65

Dependent Claim 24 words

A yarn as recited in claim 51, wherein a plurality of said cores are in contact with other cores and also with said matrix.

Claim 66

Dependent Claim 35 words

A yarn as recited in claim 51, wherein each said filament is substantially homogenous, and said flexing stress is exerted substantially uniformly throughout the filament regardless of the direction in which the stress is exerted.

Claim 67

Dependent Claim 18 words

A yarn as recited in claim 51, wherein the ratio of cores to matrix is at least 11:25.

Claim 68

Dependent Claim 14 words

A yarn as recited in claim 51, wherein said cores comprise a polyamide polymer.

Claim 69

Dependent Claim 14 words

A yarn as recited in claim 51, wherein said cores comprise a polyamide polymer.

Claim 70

Dependent Claim 14 words

A yarn as recited in claim 51, wherein said cores comprise a polyacrylic polymer.

Claim 71

Dependent Claim 14 words

A yarn as recited in claim 51, wherein said cores comprise a polyurethane polymer.

Claim 72

Dependent Claim 14 words

A yarn as recited in claim 51, wherein said cores comprise a polyolefin polymer.

Claim 73

Dependent Claim 14 words

A yarn as recited in claim 51, wherein said cores comprise a copolyamide polymer.

Claim 74

Dependent Claim 14 words

A yarn as recited in claim 51, wherein said cores comprise a copolyester polymer.

Claim 75

Dependent Claim 14 words

A yarn as recited in claim 51, wherein said matrix comprises a polyamide polymer.

Claim 76

Dependent Claim 18 words

A yarn as recited in claim 51, wherein each of said filaments has the same number of cores.

Claim 77

Dependent Claim 30 words

A yarn as recited in claim 51, further comprising distribution of said cores on a plurality of concentric circles as seen in any transverse cross sectional view of said filament.

Claim 78

Dependent Claim 108 words

In a yarn consisting of a plurality of composite filaments wherein each filament includes at least two different incompatible synthetic linear high polymers, and wherein one polymer functions as a matrix and said other polymer consists of a multiplicity of continuous ultra fine cores distributed substantially uniformly throughout the longitudinal body of the matrix, and wherein each core is characterized by its uniformity in cross sectional dimension, and the cross section dimensions from core to core being of the same order of magnitude, the improvement comprising distribution of said cores on a plurality of substantially concentric circles as seen in any transverse cross sectional view of said filament.

Claim 79

Dependent Claim 108 words

In a yarn consisting of a plurality of composite filaments wherein each filament includes at least two different incompatible synthetic linear high polymers, and wherein one polymer functions as a matrix and said other polymer consists of a multiplicity of continuous ultra fine cores distributed substantially uniformly throughout the longitudinal body of the matrix, and wherein each core is characterized by its uniformity in cross sectional dimension, and the cross section dimensions from core to core being of the same order of magnitude, the improvement comprising distribution of said cores on a plurality of substantially concentric circles as seen in any transverse cross sectional view of said filament.

Claim 80

Dependent Claim 24 words

A yarn as recited in claim 70, wherein said cores are substantially parallel to one another when said filament is viewed in longitudinal section.

Claim 81

Dependent Claim 16 words

A yarn as recited in claim 70, wherein said cores all have substantially the same denier.

Claim 82

Dependent Claim 21 words

A yarn as recited in claim 70, wherein the number of said cores in each said filament is less than 10.

Claim 83

Dependent Claim 21 words

A yarn as recited in claim 70, wherein the number of said cores in each said filament is 10 to 10,000.

Claim 84

Dependent Claim 28 words

A yarn as recited in claim 70, wherein said cores are spaced apart from each other and wherein each said core is completely adjacently enclosed by said matrix.

Claim 85

Dependent Claim 23 words

A yarn as recited in claim 70, wherein a plurality of said cores are in contact with other cores and with said matrix.

Claim 86

Dependent Claim 35 words

A yarn as recited in claim 70, wherein each said filament is substantially homogenous, and any flexing stress is exerted substantially uniformly throughout the filament regardless of the direction in which the stress is exerted.

Claim 87

Dependent Claim 18 words

A yarn as recited in claim 70, wherein the ratio of cores to matrix is at least 11:25.

Claim 88

Dependent Claim 14 words

A yarn as recited in claim 70, wherein said cores comprise a polyamide polymer.

Claim 89

Dependent Claim 14 words

A yarn as recited in claim 70, wherein said cores comprise a polyester polymer.

Claim 90

Dependent Claim 14 words

A yarn as recited in claim 70, wherein said cores comprise a polyacrylic polymer.

Claim 91

Dependent Claim 14 words

A yarn as recited in claim 70, wherein said cores comprise a polyurethane polymer.

Claim 92

Dependent Claim 14 words

A yarn as recited in claim 70, wherein said cores comprise a polyolefin polymer.

Claim 93

Dependent Claim 14 words

A yarn as recited in claim 70, wherein said cores comprise a copolyamide polymer.

Claim 94

Dependent Claim 14 words

A yarn as recited in claim 70, wherein said cores comprise a copolyester polymer.

Claim 95

Dependent Claim 14 words

A yarn as recited in claim 70, wherein said cores comprise a polyamide polymer.

Claim 96

Dependent Claim 18 words

A yarn as recited in claim 70, wherein each of said filaments has the same number of cores.

Claim 97

Dependent Claim 20 words

A yarn as recited in claim 70, wherein each said filament is free of irregularly shaped cores at its periphery.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1985-09-20	1986-03-22	1986-09-21	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	1989-09-20	1990-03-22	1990-09-21	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	1993-09-20	1994-03-22	1994-09-21	$7700.00	Window Closed / Lapsed

Synthetic filaments and the like

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