EP0286246A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Lightweight fabrics
Assignee: PERSEVERANCE MILLS Ltd
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Filing: 1988-03-16
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Granted: —
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Expires: 2008-03-16
Abstract
Abstract The invention discloses a method of producing a lightweight parachute fabric comprising multi-filament polyamide yarns woven together to give a single layer, plain weave structure, wherein a silicone emulsion finish is applied to the fabric and such fabric is then calendered. The presence of the finish facilitates spread of the multi-filaments, thus serving to reduce permeability. The resultant fabric is of low permeability, and of lesser weight per unit area than conventional fabrics.
Inventors
- 👤 John Holmes
- 👤 Harry Walker
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-02 05:25
CPC Classifications
D; D03; D03D; D03D1/00; D03D15/00; D03D15/50; D03D15/573; B; B64; B64D; B64D17/00; D03D15/20; D03D15/283; D10; D10B; D10B2331/00; D10B2331/02; D10B2401/00; D10B2401/06; D10B2401/063; D10B2507/00; D10B2507/06
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
32 words
A method of manufacturing a parachute fabric comprising the steps of forming a light weight coherent structure of multi-filament polyamide yarns, applying a silicone emulsion finish thereto and subsequently calendering said structure.
Claim 2
Independent Claim
32 words
A method of manufacturing a parachute fabric comprising the steps of forming a light weight coherent structure of multi-filament polyamide yarns, applying a silicone emulsion finish thereto and subsequently calendering said structure.
Claim 3
Dependent Claim
25 words
The method as claimed in claim 1, wherein the calendering is effected at high temperatures and includes multiple passes with fabric reversal at each stage.
Claim 4
Dependent Claim
50 words
The method as claimed in claim 1 or 2, wherein the step of forming a light weight coherent structure comprises weaving warp and weft yarns in a plain weave and includes the weaving of two yarns as one at intervals in at least one of the warp and weft directions.
Claim 5
Dependent Claim
13 words
A parachute fabric produced in accordance with the method claimed in claim 1.
Claim 6
Dependent Claim
21 words
A parachute fabric as claimed in claim 4, comprising warp and weft yarns arranged as a plain weave, single layer fabric.
Claim 7
Dependent Claim
29 words
A parachute fabric as claims in claim 5, wherein in at least one of the warp and weft directions two yarns are woven as one at spaced apart positions.
Claim 8
Dependent Claim
16 words
A parachute fabric as claimed in claim 5 or 6 comprising multi-filament medium tenacity polyamide yarns.
Claim 9
Dependent Claim
28 words
A parachute fabric as claimed in claim 5 or 6, wherein the emulsion finish exists in an amount of between 0.2% and 0.4% by weight of the fabric.
References Cited (Backward Citations)
No citation records indexed.
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