Rotary spin

Rotary spin means a process used to produce wool fiberglass building insulation by forcing molten glass through numerous small orifices in the side wall of a spinner to form continuous glass fibers that are then broken into discrete lengths by high-velocity air flow. Any process used to produce bonded wool fiberglass building insulation by a process other than flame attenuation is considered rotary spin.


40 CFR § 63.1381

Scoping language

Terms used in this subpart are defined in the Clean Air Act, in 63.2, or in this section as follows:

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