| 摘要 |
<p>Opaque wall covering comprises a permeable support comprising a flexible sheet formed of refractory mineral fibres, such as glass fibres, and a reverse coating layer comprising an opacifying mineral in a dry state and mixed with a hydrated, crystalline mineral filler which is non-hydraulic and is divided, and a film-forming binder. The wt. ratio of organic components of the opacifier to the mineral filler is below 20, pref. 10-20%.</p> |
