Usually consists of several layers to provide strength, with high elasticity and high tear resistance, designed for packaging products with high demands for strength and durability and resistant outer surface where instructions are printed, trademark, etc.
12.
"Sack kraft paper ", or just " sack paper ", is a porous kraft paper with high elasticity and high tear resistance, designed for packaging products with high demands for strength and durability.
13.
"Modified bitumen " is mixed with filler components such as limestone, sand, or polymers such as atactic polypropylene ( APP ) that gives rigidity and tear resistance or styrene-butadiene styrene ( SBS ), a rubber additive that gives more elastic benefits.
14.
The fleece improves puncture and tear resistance considerably; EPDM with a fleece backing is 180 % stronger than bare EPDM . Fleece backed EPDM has a tear strength of compared to of that without the fleece reinforcement, more than 3 times the strength of non-reinforced membranes.
