EP0233702A2
Expired / Lapsed
EP
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Stretchable synthetic polymer composite filament
Assignee: Teijin Ltd
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Filing: 1987-01-16
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Granted: —
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Expires: 2007-01-16
Abstract
Abstract A stretchable synthetic polymer composite filament useful for stretchable fabrics, comprises: (A) an axial filamentary constituent; (B) a plurality of composite lobe filamentary constituents consisting of protrudent filamentary segments (BI) outwardly protruding from the axial filamentary constituent (A) in different directions from each other and edge filamentary segments (B2) attached to outside ends of the protrudent filamentary segments (BI); the axial filamentary constituent (A) and the protrudent filamentary segments (BI) consisting essentially of a synthetic thermoplastic elastomer (a), and the edge filamentary segments (B2) consisting essentially of at least one synthetic thermoplastic low elastic polymer (b), in which filament, when not under tension, the composite lobe filamentary constituents (B) are asymmetric with respect to at least one feature of the location thereof, and cross-sectional configurations and sizes of the protrudent and edge filamentary segments (BI and B2), about the longitudinal axis of the filament, and are spirally coiled around the axial filamentary constituent (A) in alternately reversed two opposite directions.
Inventors
- 👤 Seiji Ishii
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-01 20:58
CPC Classifications
D; D01; D01D; D01D5/00; D01D5/28; D01D5/30; D01D5/253; D01F; D01F8/00; D01F8/04; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2922; Y10T428/2925; Y10T428/2929; Y10T428/2933; Y10T428/2964; Y10T428/2967; Y10T428/2969; Y10T428/2973; Y10T428/2976; Y10T428/2978
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
182 words
I. A stretchable synthetic polymer composite filament, comprising: (A) an axial filamentary constituent extending along the longitudinal axis of the filament; (B) a plurality of composite lobe filamentary constituents consisting of protrudent filamentary segments (BI) outwardly protruding from the axial filamentary constituent (A) in different directions from each other and extending along the axial filamentary constituent (A) and edge filamentary segments (B2) attached to outside ends of the protrudent filamentary segments (BI) and extending along the protrudent filamentary segments (BI), the axial filamentary constituent (A) and the protrudent filamentary segments (BI) consisting essentially of a synthetic thermoplastic elastomer (a), and the edge filamentary segments (B2) consist ing essentially of at least one synthetic thermoplastic low elastic polymer (b), in which filament, when not under tension, the composite lobe filamentary constituents (B) are asymmetric with respect to at least one feature of the location thereof, and cross-sectional configurations and sizes of the protrudent and edge filamentary segments (BI and B2), about the longitudinal axis of the filament, and are spirally coiled around the axial filamentary constituent (A) in alternately reversed two opposite directions.
Claim 2
Dependent Claim
25 words
The composite filament as claimed in claim I, wherein the edge filamentary segments (B2) are substantially completely fixed to the corresponding protrudent filamentary segments (BI).
Claim 3
Dependent Claim
25 words
The composite filament as claimed in claim 1, wherein the spirally coiled lobe filamentary constituents (B) are parallel to each other when not under tension.
Claim 4
Dependent Claim
22 words
The composite filament as claimed in claim I, wherein the lobe filamentary constituents (B) are in the number of 2 to 6.
Claim 5
Dependent Claim
27 words
The composite filament as claimed in claim I, wherein the lobe filamentary constituents (B) are protruded at angles formed between two adjacent constituents different from each other.
Claim 6
Dependent Claim
36 words
The composite filament as claimed in claim I, wherein the protrudent filamentary segments (BI) are asymmetric in at least one of cross-sectional con figuration and size and location thereof about the longitudinal axis of the fiber.
Claim 7
Dependent Claim
21 words
The composite filament as claimed in claim I, wherein the protrudent filamentary segments (BI) have different lengths thereof from each other.
Claim 8
Dependent Claim
21 words
The composite filament as claimed in claim I, wherein the protrudent filamentary segments (BI) have different areas thereof from each other.
Claim 9
Dependent Claim
21 words
The composite filament as claimed in claim I, wherein the edge filamentary segments (B2) have different areas thereof from each other.
Claim 10
Dependent Claim
21 words
The composite filament as claimed in claim I, wherein the edge filamentary segments (B2) have a substantially round cross-sectional profile thereof.
Claim 11
Dependent Claim
21 words
II. The composite filament as claimed in claim I, wherein the edge filamentary segments (B2) have a non-round cross-sectional profile thereof.
Claim 12
Dependent Claim
25 words
The composite filament as claimed in claim I, wherein the edge filamentary segments (B2) are different in cross-sectional configuration and size thereof from each other.
Claim 13
Dependent Claim
22 words
The composite filament as claimed in claim I, wherein the edge filamentary segments (B2) consist essentially of polymers different from each other.
Claim 14
Dependent Claim
25 words
The composite filament as claimed in claim I, wherein the synthetic thermoplastic elastomer (a) has a melting point of from 180° C to 240° C.
Claim 15
Dependent Claim
26 words
The composite filament as claimed in claim I, wherein the synthetic thermoplastic elastomer (a) is selected from the group consisting of polyurethane, polyamide and polyester elastomers.
Claim 16
Dependent Claim
27 words
The composite filament as claimed in claim I, wherein the synthetic thermoplastic low elastic polymer (b) has a melting point of from 205° C to 265° C.
Claim 17
Dependent Claim
34 words
The composite filament as claimed in claim I, wherein the synthetic thermoplastic low elastic polymer (b) is selected from the group consisting of non-elastic polyamide homopolymers and copolymers and non-elastic polyester homopolymers and copolymers.
Claim 18
Dependent Claim
24 words
The composite filament as claimed in claim I, wherein the elastomer (a) is a polyurethane elastomer and the polymer (b) is a non-elastic polyamide.
Claim 19
Dependent Claim
24 words
The composite filament as claimed in claim I, wherein the elastomer (a) is a polyamide elastomer and the polymer (b) is a non-elastic polyamide.
Claim 20
Dependent Claim
25 words
The composite filament as claimed in claim I, wherein the elastomer (a) is a polyamide elastomer and the polymer (b) is a low elastic polyester.
Claim 21
Dependent Claim
26 words
2l. The composite filament as claimed in claim I, wherein the elastomer (a) is a polyester elastomer and the polymer (b) is a low elastic polyester.
References Cited (Backward Citations)
No citation records indexed.
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