Polymer blends for heat seamable roof sheeting

作者: Joseph K. Valaitis , James A. Davis

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摘要: A self-adhering heat seamable sheet material for roofing prepared from an uncured polymeric composition of matter which comprises 100 parts by weight a polymer blend comprising about 10 to 95 selected the group consisting semi-crystalline polymers having more than 2 percent be crystallinity and polyolefins up crystallinity, are monomers at least carbon atoms, mixtures thereof; 5 90 enhancing 20 300 filler reinforcing non-reinforcing materials thereof per blend; 150 processing thereof, blend. method covering roof steps applying layers blends polyolefins, being covered; overlapping adjacent edges layers; heating overlapped areas softening point seaming under sufficient pressure provide acceptable seam strength. For practice method, is self-adhering, without use adhesive.