MEHRSCHICHTIGE POLSTERSCHICHT UNTER KUNSTRASEN UND IHRE VERWENDUNG.

摘要

Multilayer composite sheet (I) comprises (A) lower layer of foamed plastic (B) metal foil bonded over its entire surface to (A), opt. via (C) intervening sheet. Pref. (A) comprises closed cell polyethylene foam of apparent density 30-150, partic. 50-100 kg/cub.m. (A) is 5-20, partic. 8-12 mm thick. (A) is coated with Al foil 5-15 microns thick and (as (C) Kraft paper of surface wt. 30-60 g/sq.m, or with Al foil 5-30 microns thick and film 10-30 microns thick of uncrosslinked polyethylene. (I) is perforated.