US5063099A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Non-woven mat consisting of acrylic continuous filaments showing high modulus impregnated with an inorganic matrix
Assignee: Montefibre SpA
•
Filing: 1990-03-19
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Granted: 1991-11-05
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Expires: 2010-03-19
Abstract
Abstract Non-woven mat consisting of one or more overlapped layers, each made of continuous, parallel, monodirectional filaments of an acrylic polymer having a tenacity of at least 50 cN/tex, an elastic modulus equal to at least 1000 cN/tex, and an ultimate elongation lower than 15%. Use of this non-woven mat as reinforcement for organic and inorganic matrices, and manufactured articles thus obtained.
Inventors
- 👤 Raffaele Tedesco
- 👤 Giampaolo Busato
- 👤 Giampaolo Sinatora
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:39
CPC Classifications
D; D04; D04H; D04H1/00; D04H1/04; D04H1/08; D04H1/22; E; E04; E04C; E04C5/00; E04C5/07; Y; Y10; Y10S; Y10S428/00; Y10S428/902; Y10T; Y10T428/00; Y10T428/24; Y10T428/24058; Y10T428/24074; Y10T428/24091; Y10T428/24099; Y10T428/29; Y10T428/2913; Y10T428/2929; Y10T442/00; Y10T442/20; Y10T442/2008; Y10T442/2861; Y10T442/2885; Y10T442/60; Y10T442/682
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
161 words
A non-woven mat impregnated with an inorganic matrix, said mat consisting of at least one layer, wherein each layer consists of a plurality of continuous parallel, monodirectional polyacrylic filaments having a tenacity of at least 50 cN/tex, an elastic modulus of at least 1,000 cN/tex, and an ultimate elongation lower than 15%, the filaments in each layer being bound together, said continuous filaments being arranged in a spread out open structure obtained by opening a tow of filaments until a width of between 50 and 500 cm prior to bonding the filaments in each layer to the other, wherein the filaments are bonded together by a cohesion agent in an amount from 5 to 50% by weight of the filaments, and the cohesion agent is a member of the group of agents which dissolve or swell in water or an alkaline solution of the matrix, employed when the non-woven mat is impregnated with the inorganic matrix to manufacture reinforced inorganic matrix.
Claim 2
Dependent Claim
161 words
A non-woven mat impregnated with an inorganic matrix, said mat consisting of at least one layer, wherein each layer consists of a plurality of continuous parallel, monodirectional polyacrylic filaments having a tenacity of at least 50 cN/tex, an elastic modulus of at least 1,000 cN/tex, and an ultimate elongation lower than 15%, the filaments in each layer being bound together, said continuous filaments being arranged in a spread out open structure obtained by opening a tow of filaments until a width of between 50 and 500 cm prior to bonding the filaments in each layer to the other, wherein the filaments are bonded together by a cohesion agent in an amount from 5 to 50% by weight of the filaments, and the cohesion agent is a member of the group of agents which dissolve or swell in water or an alkaline solution of the matrix, employed when the non-woven mat is impregnated with the inorganic matrix to manufacture reinforced inorganic matrix.
Claim 3
Dependent Claim
19 words
An impregnated non-woven mat according to claim 1, wherein the layers are at least 2 and up to 100.
Claim 4
Dependent Claim
28 words
An impregnated non-woven mat according to claim 2, wherein the layers are crossed in such a manner as to give a reinforcement homogeneous in the two normal directions.
Claim 5
Dependent Claim
21 words
An impregnated non-woven mat according to claim 1, wherein each layer has a weight between 10 and 200 g/m 2 .
Claim 6
Dependent Claim
51 words
An impregnated non-woven mat according to claim 1, wherein each layer has a weight between 20 and 50 g/m 2 wherein the filaments are from 30 to 60 mm long and the open structure is obtained by opening the tow of filaments until a width between about 100 and 500 cm.
Claim 7
Dependent Claim
40 words
An impregnated non-woven mat according to claim 1, wherein the filaments of each layer have a diameter between 8 and 50 micrometers and the cohesion agent is in an amount of from 10 to 20% by weight of the filaments.
Claim 8
Dependent Claim
27 words
Non-woven mat according to claim 1, wherein the filaments in each layer are bound together by transverse stitches at a mutual distance of 2 to 15 cm.
Claim 9
Dependent Claim
19 words
An impregnated non-woven mat according to claim 1, wherein the inorganic matrix is selected from mortar, concrete and plaster.
Claim 10
Dependent Claim
19 words
An impregnated non-woven mat according to claim 1, wherein the layers are at least 2 and up to 6.
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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) | 1994-11-04 | 1995-05-06 | 1995-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-11-04 | 1999-05-06 | 1999-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-11-04 | 2003-05-06 | 2003-11-05 | $7700.00 | Window Closed / Lapsed |