US3917784A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for producing pile fabrics having excellent appearance and properties
Assignee: Kanebo Ltd
•
Filing: 1973-08-13
•
Granted: 1975-11-04
•
Expires: 1993-08-13
Abstract
Abstract A pile fabric having excellent appearance and properties is produced by conjugate spinning a polyamide and a polyester in a side-by-side relation, applying to the resulting filaments firstly a non-aqueous oil composition and then an aqueous oil composition, drawing the thus treated filaments and taking them up on a bobbin, unwinding the filaments from the bobbin and allowing them to stand under a relaxed state to develop spontaneous crimps, compressing the crimp-developed filaments to a filling density of 150 - 380 g/l and then immersing them in water at a temperature of lower than 50*C and raising the temperature to higher than 80*C to set the spontaneous crimps and simultaneously splitting the filament into the two components and forming the resulting filaments in the pile fabric or by forming directly the drawn filaments obtained in the same manner as described above into a pile fabric to develop spontaneous crimps, jetting steam on the pile fabric surface to set the spontaneous crimps and immersing the pile fabric in water at a temperature of lower than 50*C and raising the temperature to higher than 80*C to split the filaments into the two components.
Inventors
- 👤 Takeshi Nishida
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:17
CPC Classifications
D; D06; D06C; D06C11/00; D01; D01F; D01F8/00; D01F8/04; D01F8/14; D06M; D06M7/00; D06M2200/00; D06M2200/40; F; F04; F04C; F04C2210/00; F04C2210/26; Y; Y10; Y10S; Y10S264/00; Y10S264/47
Claims Analysis
Total Claims: 57
Claim 1
Independent Claim
12 words
A METOD OF PRODUCING A PILE FABRIC, WHICH COMPRISES THE STEPS OF:
Claim 2
Dependent Claim
12 words
A METOD OF PRODUCING A PILE FABRIC, WHICH COMPRISES THE STEPS OF:
Claim 3
Dependent Claim
25 words
CONJUGATE SPINNING A FIBER-FORMING POLYAMIDE AND A FIBERFORMING POLYESTER IN SIDE-BY-SIDE RELATION AT A CONJUGATION RATIO OF FROM 1/3 TO 3/1 TO FORM BICOMPONENT FILAMENTS,
Claim 4
Dependent Claim
25 words
CONJUGATE SPINNING A FIBER-FORMING POLYAMIDE AND A FIBERFORMING POLYESTER IN SIDE-BY-SIDE RELATION AT A CONJUGATION RATIO OF FROM 1/3 TO 3/1 TO FORM BICOMPONENT FILAMENTS,
Claim 5
Dependent Claim
66 words
APPLYING TO THE BICOMPONET FILAMENTS OF STEP 1 AFTER THEY EXIST FROM THE SPINNERET, FIRST A. FROM 0.5 TO 2.0 WT. % OF A SPINNING OIL COMPOSITION. CONTAINING LESS THAN 10 WT% OF WATER, AND THEN B. FROM 0.3 TO 1.5 WT% OF A SPINNING OIL COMPOSITION CONTAININ MORE THAN 40WT% OF WATER, THE FOREGUING STEPS 2(A) AND 2NB) BEING CARRIED OUT WITHOUT DRAWING THE FILAMENTS,
Claim 6
Dependent Claim
66 words
APPLYING TO THE BICOMPONET FILAMENTS OF STEP 1 AFTER THEY EXIST FROM THE SPINNERET, FIRST A. FROM 0.5 TO 2.0 WT. % OF A SPINNING OIL COMPOSITION. CONTAINING LESS THAN 10 WT% OF WATER, AND THEN B. FROM 0.3 TO 1.5 WT% OF A SPINNING OIL COMPOSITION CONTAININ MORE THAN 40WT% OF WATER, THE FOREGUING STEPS 2(A) AND 2NB) BEING CARRIED OUT WITHOUT DRAWING THE FILAMENTS,
Claim 7
Dependent Claim
70 words
applying to the bicompoment filaments of step 1 after they exit from the spinneret, first a. from 0.5 to 2.0 wt. % of a spinning oil composition containing less than 10 wt. % of water, and then b. from 0.3 to 1.5 wt. % of a spinning oil composition containing more than 40 wt. % of water; the foregoing steps 2(a) and 2(b) being carried out without drawing the filamEnts;
Claim 8
Dependent Claim
70 words
applying to the bicompoment filaments of step 1 after they exit from the spinneret, first a. from 0.5 to 2.0 wt. % of a spinning oil composition containing less than 10 wt. % of water, and then b. from 0.3 to 1.5 wt. % of a spinning oil composition containing more than 40 wt. % of water; the foregoing steps 2(a) and 2(b) being carried out without drawing the filamEnts;
Claim 9
Dependent Claim
58 words
applying to the bicomponent filaments of step (1 ) after they exit from the spinneret, first a. from 0.5 to 2.0 wt. % of a spinning oil composition containing less than 10 wt. % of water, and then b. from 0.3 to 1.5 wt. % of a spinning oil composition containing more than 40 wt. % of water;
Claim 10
Dependent Claim
58 words
applying to the bicomponent filaments of step (1 ) after they exit from the spinneret, first a. from 0.5 to 2.0 wt. % of a spinning oil composition containing less than 10 wt. % of water, and then b. from 0.3 to 1.5 wt. % of a spinning oil composition containing more than 40 wt. % of water;
Claim 11
Dependent Claim
61 words
A method as claimed in claim 1, in which in step (4) after the filaments are unwound from the bobbin, they are wound in a relaxed package and the filaments in the relaxed package are permitted to relax in air to develop spontaneous crimps and, in step (5), the relaxed package is placed in the vessel and is immersed in water.
Claim 12
Dependent Claim
29 words
A method as claimed in claim 1, in which the pile fabric is a carpet and the filaments in the carpet have a denier of from 10 to 50.
Claim 13
Dependent Claim
65 words
drawing the bicomponent filaments of step (2) at a temperature of from 70* to 130*C, and then taking up the bicomponent filaments on a bobbin, the filaments at this time being substantially unsplit and uncrimped and possessing the inherent properties of a spontaneous crimp percentage of more than 40%, a split percentage of more than 70% and a shrinkage difference of from 2 to 12%;
Claim 14
Dependent Claim
65 words
drawing the bicomponent filaments of step (2) at a temperature of from 70* to 130*C, and then taking up the bicomponent filaments on a bobbin, the filaments at this time being substantially unsplit and uncrimped and possessing the inherent properties of a spontaneous crimp percentage of more than 40%, a split percentage of more than 70% and a shrinkage difference of from 2 to 12%;
Claim 15
Dependent Claim
78 words
drawing the bicomponent filaments of step (2) at a temperature of from 70* to 130*C, and then taking up the foregoing steps 2(a) and 2(b) being carried out without drawing the filaments; the bicompoment filaments on a bobbin, the filaments at this time being substantially unsplit and un-crimped and possessing the inherent properties of a spontaneous crimp percentage of more than 40%, a split percentage of more than 70% and a shrinkage difference of from 2 to 12%;
Claim 16
Dependent Claim
78 words
drawing the bicomponent filaments of step (2) at a temperature of from 70* to 130*C, and then taking up the foregoing steps 2(a) and 2(b) being carried out without drawing the filaments; the bicompoment filaments on a bobbin, the filaments at this time being substantially unsplit and un-crimped and possessing the inherent properties of a spontaneous crimp percentage of more than 40%, a split percentage of more than 70% and a shrinkage difference of from 2 to 12%;
Claim 17
Dependent Claim
65 words
DRAWING THE BICOMPONET FILAMENTS OF STEPS (2) AT A TEMPERATURE OF FROM 70* TO 130*C, AND THEN TAKING UP THE BICOMPONET FILAMENTS ON A BOBBIN, THE FILAMENTS AT THIS TIME BEING SUBSTANTIALLY UNSPLIT AND UNCRIMPED AND POSISESSING THE INHERENT PROPERTIES OF A SPONTANEOUS CRIMP PERCENTAGE OF MORE THAN 40% A SPLIT PERCENTAGE OF MORE THAN 70% AND A SHRINKAGE DIFFERENCE OF FROM 2 TO 12%
Claim 18
Dependent Claim
65 words
DRAWING THE BICOMPONET FILAMENTS OF STEPS (2) AT A TEMPERATURE OF FROM 70* TO 130*C, AND THEN TAKING UP THE BICOMPONET FILAMENTS ON A BOBBIN, THE FILAMENTS AT THIS TIME BEING SUBSTANTIALLY UNSPLIT AND UNCRIMPED AND POSISESSING THE INHERENT PROPERTIES OF A SPONTANEOUS CRIMP PERCENTAGE OF MORE THAN 40% A SPLIT PERCENTAGE OF MORE THAN 70% AND A SHRINKAGE DIFFERENCE OF FROM 2 TO 12%
Claim 19
Dependent Claim
21 words
UNWINDING THE FILAMENTS FROM THE BOBBIN, AND PERMITTING THE FILAMENTS TO RELAX IN AIR TO DEVELOP SPONTANEOUS CRIMPS IN THE FILAMENTS.
Claim 20
Dependent Claim
21 words
UNWINDING THE FILAMENTS FROM THE BOBBIN, AND PERMITTING THE FILAMENTS TO RELAX IN AIR TO DEVELOP SPONTANEOUS CRIMPS IN THE FILAMENTS.
Claim 21
Dependent Claim
10 words
forming the filaments of step (4) into a pile fabric;
Claim 22
Dependent Claim
10 words
forming the filaments of step (4) into a pile fabric;
Claim 23
Dependent Claim
21 words
unwinding the filaments from the bobbin, and permitting the filaments to relax in air to develop spontaneous crimps in the filaments;
Claim 24
Dependent Claim
21 words
unwinding the filaments from the bobbin, and permitting the filaments to relax in air to develop spontaneous crimps in the filaments;
Claim 25
Independent Claim
12 words
A method for producing a pile fabric, which comprises the steps of:
Claim 26
Independent Claim
12 words
A method for producing a pile fabric, which comprises the steps of:
Claim 27
Dependent Claim
65 words
placing the crimped filaments in a vessel at a filling density of from 150 to 380 grams of filament per liter of vessel volume, and therein immersing the crimped filaments in water having a temperature of less than 50*C and then raising the temperature of the water to more than 80*C to set the crimps and simultaneously to split the components of the filaments; and
Claim 28
Dependent Claim
65 words
placing the crimped filaments in a vessel at a filling density of from 150 to 380 grams of filament per liter of vessel volume, and therein immersing the crimped filaments in water having a temperature of less than 50*C and then raising the temperature of the water to more than 80*C to set the crimps and simultaneously to split the components of the filaments; and
Claim 29
Dependent Claim
19 words
permitting said pile fabric to stand in air to develop spontaneous crimps in the filaments in the pile fabric;
Claim 30
Dependent Claim
19 words
permitting said pile fabric to stand in air to develop spontaneous crimps in the filaments in the pile fabric;
Claim 31
Dependent Claim
28 words
A method as claimed in claim 4, in which the pile fabric is a carpet and the filaments in the carpet have a denier of 10 to 50.
Claim 32
Dependent Claim
65 words
PLACING THE CRIMPED FILAMENTS IN A VESSEL AT A FILLING DENSITY OF FROM 150 TO 380 GRAMS OF FILAMENT PER LITER OF VESSEL VOLUME, AND THEREIN IMMERSING THE CRIMPED FILAMENTS IN WATER HAVING A TEMPERATURE OF LESS THAN 50*C AND THEN RAISING THE TEMPERATURE OF THE WATER TO MORE THAN 80*C TO SET THE CRIMPS AND SIMULTANEOUSLY TO SPLIT THE COMPONENTS OF THE FILAMENTS, AND
Claim 33
Dependent Claim
65 words
PLACING THE CRIMPED FILAMENTS IN A VESSEL AT A FILLING DENSITY OF FROM 150 TO 380 GRAMS OF FILAMENT PER LITER OF VESSEL VOLUME, AND THEREIN IMMERSING THE CRIMPED FILAMENTS IN WATER HAVING A TEMPERATURE OF LESS THAN 50*C AND THEN RAISING THE TEMPERATURE OF THE WATER TO MORE THAN 80*C TO SET THE CRIMPS AND SIMULTANEOUSLY TO SPLIT THE COMPONENTS OF THE FILAMENTS, AND
Claim 34
Dependent Claim
11 words
FORMING THE SPLIT FILAMENTS OF STEP (5) INTO A PILE FABRIC,
Claim 35
Dependent Claim
11 words
FORMING THE SPLIT FILAMENTS OF STEP (5) INTO A PILE FABRIC,
Claim 36
Dependent Claim
21 words
The method as claimed in claim 1, wherein said conjugate ratio of the polyamide to the polyester is 5/3 - 5/2.
Claim 37
Dependent Claim
29 words
contacting the pile fabric with steam jets directed against the pile surface so as to strongly compress the pile and to set the spontaneous crimps in the filaments; and
Claim 38
Dependent Claim
29 words
contacting the pile fabric with steam jets directed against the pile surface so as to strongly compress the pile and to set the spontaneous crimps in the filaments; and
Claim 39
Dependent Claim
11 words
forming the split filaments of step (5) into a pile fabric.
Claim 40
Dependent Claim
11 words
forming the split filaments of step (5) into a pile fabric.
Claim 41
Dependent Claim
19 words
The method as claimed in claim 1, wherein the filling density in step (5), is 200 - 350 g/l.
Claim 42
Dependent Claim
35 words
immersing the pile fabric of step (6) in water having a temperature of less than 50*C and then raising the temperature of the water to more than 80*C to split the components of the filaments.
Claim 43
Dependent Claim
35 words
immersing the pile fabric of step (6) in water having a temperature of less than 50*C and then raising the temperature of the water to more than 80*C to split the components of the filaments.
Claim 44
Dependent Claim
16 words
The method as claimed in claim 1, wherein said spontaneous crimp percentage is 60 to 95%.
Claim 45
Dependent Claim
24 words
The method as claimed in claim 1, wherein in step (5), the heated water treatment is effected as part of scouring or dyeing steps.
Claim 46
Dependent Claim
42 words
The method as claimed in claim 1, wherein the crimp developed filaments are immersed in water at a temperature of lower than 40*C and the temperature is raised to higher than 90*c and said temperature is maintained for more than 30 minutes.
Claim 47
Dependent Claim
37 words
the method as claimed in claim 1, wherein said non-aqueous oil composition comprises a lubricating oil together with surface active agent and an antistatic agent diluted with an organic solvent and containing less than 10% of water.
Claim 48
Dependent Claim
38 words
The method as claimed in claim 1, wherein said aqueous oil composition is a lubricating oil together with a surface active agent and an antistatic agent dissolved or emulsified in water and containing 50 to 90% of water.
Claim 49
Dependent Claim
26 words
The method as claimed in claim 1, wherein the total amount of the two oil compositions applied on the filaments is 0.8 to 2.5% by weight.
Claim 50
Dependent Claim
21 words
The method as claimed in claim 4, wherein said conjugate ratio of the polyamide to the polyester is 5/3 - 5/2.
Claim 51
Dependent Claim
16 words
The method as claimed in claim 4, wherein said spontaneous crimp percentage is 60 - 95%.
Claim 52
Dependent Claim
24 words
The method as claimed in claim 4, wherein in step (7), the heated water treatment is effected as part of scouring or dyeing steps.
Claim 53
Dependent Claim
44 words
The method as claimed in claim 4, wherein in step (7), the pile fabric is immersed in water at a temperature of lower than 40*C and the temperature is raised to higher than 90*C and said temperature is maintained for more than 30 minutes.
Claim 54
Dependent Claim
38 words
The method as claimed in claim 4, wherein said non-aqueous oil composition comprises a lubricating oil together with a surface active agent and an antistatic agent diluted with an organic solvent and containing less than 10% of water.
Claim 55
Dependent Claim
38 words
The method as claimed in claim 4, wherin said aqueous oil composition is a lubricating oil together with a surface active agent and an antistatic agent dissolved or emulsified in water and containing 50 to 90% of water.
Claim 56
Dependent Claim
26 words
The method as claimed in claim 4, wherein the total amount of the two oil compositions applied on the filaments is 0.8 to 2.5% by weight.
Claim 57
Dependent Claim
24 words
The method as claimed in claim 4, wherein the steam is jetted on the pile fabric from a distance of less than 1 cm.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-11-03 | 1979-05-05 | 1979-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-11-03 | 1983-05-05 | 1983-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-11-03 | 1987-05-05 | 1987-11-04 | $7700.00 | Window Closed / Lapsed |