1. Permeability: The waterproof tarp must consider its permeability, especially the military tent tablecloth, the fabric structure of the shadow factor of the permeability, the density, the material, the type of waterproof finish, and the adhesion of the resin. As the resin adhesion increases, the permeability of the poly tarp decreases. Of course this is related to the use of finishing agents. Generally speaking, breathable tents are mainly cotton, vinylon, lacquer and other products treated with paraffin or acrylic eye resin.

2. Stretch and dimensional stability: As a roof tent and large tent, it is often used for tension. The elongation of the substance is not too large, and its dimensional stability depends on the creep properties of the material.

3. Tear degree: The plain tarpaulin damage is mainly caused by tearing, so the tear strength is an important indicator of tarpaulin. Tear strength is related to whether the tarpaulin will burst due to the influence of external objects, or for some reason, expanding the surrounding holes to form a structural crack.