FIELD: pulp industry.
SUBSTANCE: invention relates to bitumen-impregnated cellulose fiber sheets containing one of its surface layers an adhesive primer and deposited on said layer of adhesive primer a fire-resistant coating containing expandable graphite. Bitumen impregnated sheet has corrugations, said layer of adhesive primer is a polymer or a mixture of polymers selected from thermoplastic resins, and said expandable graphite is coated with a dry deposition of said layer of adhesive primer. Bitumen-impregnated sheet additionally contains a layer of paint, deposited on fire-resistant coating, wherein said paint contains a polymer selected from thermoplastic resins. Sheets are primarily intended for use as facing material, and in particular, roofing material.
EFFECT: sheets are characterised by fire-resistance which satisfies, in particular, the European Standard EN 13 501-5 document.
12 cl, 2 tbl
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD FOR PRODUCING COVERING ELEMENT MADE FROM FIBERS IMPREGNATED WITH BITUMEN HAVING IMPROVED FIRE PROPERTIES AND COMPOSITION | 2015 |
|
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| REGISTRATION SHEET WITH IMPROVED PRINTING QUALITY AT LOW LEVELS OF ADDITIVES | 2009 |
|
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| FABRICATION OF COATED SUBSTRATES | 2012 |
|
RU2560349C2 |
| ELECTROCONDUCTIVE SIZED GLASS FIBRES | 2005 |
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| MATERIALS PROTECTING AGAINST BURNS | 2008 |
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RU2454907C2 |
