FIELD: construction.
SUBSTANCE: method to produce an insulating felt provides for formation of non-woven material from tangled polymer fibres by means of technological process of carding or garnetting, polymer fibres include from 55-80 wt %, of at least one stable fibre and from 20-45 wt % of at least one binding fibre, where the average fibre diameter makes from 12.0 to 20.5 microns and at least 55 wt % of fibres are curled. Also the method includes calibration and thermal fixation of the specified non-woven material to form an insulating felt, containing tangled and thermally linked polymer fibres.
EFFECT: produced felt provides good heat-insulation properties, has low cost, restores shape well after application of compression forces and may be easily installed in vertical or suspended position.
4 cl, 47 ex, 4 tbl
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| PROCESS FOR MAKING FILTER CONTAINING NONWOVEN FABRIC, AND/OR FILTER INJECTED STRUCTURES OR SHEETS PRODUCED WITH USING SPECIFIED PROCESS AND DESIGNED TO FILTER AND REMOVE LEGIONELLA PNEUMOFILLA AND FILTER MADE BY THIS PROCESS | 2005 |
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