Mankhwala osiyanasiyana: nsalu imodzi filimu imodzi, awiri nsalu filimu imodzi, Mipikisano kuwira filimu ndi zina zotero. Zogulitsa: mtundu wagawo la 200-1600g/m2, makulidwe a filimu 0.1-1.5mm, Mzere wa 0.8-6.6m Zogulitsa: ngalande zophatikizika zotsutsana ndi seepage, mphamvu yayikulu, kugundana kwakukulu, kukana kuphulika, ...
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