| 摘要 |
<p>The invention relates to a sandwich-type panel of the type which consist of different successive layers and which comprise, by way of an outer face and/ or counter face, a film of a transparent acrylic polymer to which an insoluble or slightly-soluble transparent thermoplastic has been added to the organic solvents. According to the invention, the surface films on the face and counter face have similar thermal expansion coefficients and a similar moisture absorption coefficient and basic weight. The invention is suitable for use in construction.</p> |
