US5558933A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sheeting material and method of manufacturing the same
Assignee: Amatek Ltd
•
Filing: 1994-10-18
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Granted: 1996-09-24
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Expires: 2014-10-18
Abstract
Abstract Sheeting in the form of fibre board comprising cellulose fibres and a thermosetting resin in an amount sufficient to bond the cellulose fibres together when compressed the sheeting having a density of 1100 kg/m 3 or greater. The method of manufacturing the sheeting comprises the steps of combining the cellulose fibres and thermosetting resin together and forming a mat or web, and thereafter heating and compressing the mat or web to a density of at least 1100 kg/m 3 .
Inventors
- 👤 Patrick Anthony
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:18
CPC Classifications
B; B27; B27N; B27N1/00; B27N1/02; B27N3/00; B27N3/04; C; C08; C08L; C08L97/00; C08L97/02; Y; Y10; Y10T; Y10T428/00; Y10T428/25; Y10T428/252; Y10T428/253; Y10T428/254; Y10T428/29; Y10T428/2982; Y10T428/2991; Y10T428/2993; Y10T428/2996; Y10T428/2998; Y10T442/00; Y10T442/60
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
115 words
A building substrate consisting essentially of cellulose fibres and a cured thermosetting resin present in an amount of at least 10% by weight of resin to dry fibre weight wherein the said cellulose fibres and resin are bonded together and the substrate has a moisture content after compression of 4 to 11% by weight of moisture to dry fibre weight and a density of 1100kg/m 3 or greater and wherein the thermosetting resin is present in an amount such that when the substrate is subjected to a water swell test in accordance with British Standard BS5669, the immersion time for the test being 24 hours, the water swelling of the substrate is less than 1.0%.
Claim 2
Dependent Claim
115 words
A building substrate consisting essentially of cellulose fibres and a cured thermosetting resin present in an amount of at least 10% by weight of resin to dry fibre weight wherein the said cellulose fibres and resin are bonded together and the substrate has a moisture content after compression of 4 to 11% by weight of moisture to dry fibre weight and a density of 1100kg/m 3 or greater and wherein the thermosetting resin is present in an amount such that when the substrate is subjected to a water swell test in accordance with British Standard BS5669, the immersion time for the test being 24 hours, the water swelling of the substrate is less than 1.0%.
Claim 3
Dependent Claim
19 words
A building substrate according to claim 1 wherein the moisture content of the said substrate is 7 to 11%.
Claim 4
Dependent Claim
29 words
A building substrate according to claim 2 wherein the said thermosetting resin is present in an amount of at least 15% by weight of resin to dry fibre weight.
Claim 5
Dependent Claim
28 words
A building substrate according to claim 2 wherein the thermosetting resin is present in an amount of 15 to 25% by weight of resin to dry fibre weight.
Claim 6
Dependent Claim
28 words
A building substrate according to claim 1 wherein said thermosetting resin is present in an amount of 15 to 25% by weight of resin to dry fibre weight.
Claim 7
Dependent Claim
27 words
A building substrate according to claim 1 wherein said thermosetting resin is present in an amount of about 16% by weight of resin to dry fibre weight.
Claim 8
Dependent Claim
19 words
A building substrate according to claim 1 wherein the density of the substrate is 1100 to 1300kg/m 3 .
Claim 9
Dependent Claim
19 words
A building substrate according to claim 1 wherein said thermosetting resin in an amino resin with a phenolic component.
Claim 10
Dependent Claim
40 words
A building substrate according to claim 8 wherein said thermosetting resin is selected from the group consisting essentially of: melamine urea phenol formaldehyde; melamine phenol formaldehyde; melamine urea formaldehyde; tannin formaldehyde; phenol urea formaldehyde; resorcinol urea formaldehyde; and mixtures thereof.
Claim 11
Dependent Claim
14 words
A building substrate according to claim 1 wherein the cellulose fibre is wood fibre.
Claim 12
Dependent Claim
16 words
A building substrate according to claim 9 wherein the thermosetting resin comprises melamine urea phenol formaldehyde.
References Cited (Backward Citations)
AU4267564A
Cited
AU3782568A
Cited
GB1197965A
Cited
SE375722B
Cited
US3779843A
Cited
US4283450A
Cited
US4503115A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1999-09-24 | 2000-03-25 | 2000-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-09-24 | 2004-03-25 | 2004-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-09-24 | 2008-03-25 | 2008-09-24 | $7700.00 | Window Closed / Lapsed |