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Federal Consumer Products Safety Commission passing 16 CFR Part 1209, which sets safety standards covering four product attributes for cellulose insulation only: settled density, corrosiveness, critical radiant flux and smoldering combustion. Another regulation passed was the “R-value Rule,” placing clear limitations on the claims that manufacturing and marketing firms can make about their product.& f7 j# _8 V7 G% y9 S# X s/ _+ N
- u) H( K. _7 C$ p1 C隔热棉厂家都要标称 R值, 根据市场习惯, UL等标准机构一般选用 thermal resistance of 3.75 – 3.85 R with a conditioned density of 32.04 – 40.05 kg/m3 (2.0 – 2.5 pounds per cubic foot) 进行测试。 |
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