| 摘要 |
A method of preventing or delaying delamination of a multi-layer structure which is protected against fire. This type of structure is comprised of an inner layer (16), which acts as a body, an outer layer (1 1) which is arranged at a distance from the inner layer (16), which outer layer (11) comprises a fire retardant film, and an intermediate layer (13,14) which is arranged between the layers and which is attached to the inner layer (16) by means of the first polymer layer (15) and to the outer layer (11) by means of the second polymer layer (12). According to the present invention, a fire retardant is included in at least one polymer layer (12,15), or in the inner layer (16) which is arranged against the first polymer layer (15), in order to prevent or delay delamination of the structure, under conditions in which the outer layer (11) is exposed to a high temperature. The intermediate layer contains a non-woven fabric layer (13), and a thermoplastic polymer film (14), which optionally contains a fire retardant. |
