How low can rcpp materials withstand?

Rcpp material is resistant to 0 degree low temperature. Cooking grade polypropylene (rcpp) film has the characteristics of low temperature resistance. Usually, under the condition of below 0℃, materials will become brittle and easily break at low temperature. For example, the utility model patent with the patent publication number of cn 1042282 15b in China discloses a high barrier cooking-resistant and corrosion-resistant packaging composite film and its preparation method. The composite film is formed by tightly bonding a pet film layer, an ink layer, a first polyurethane adhesive layer, a high-barrier vacuum aluminized pet film layer, a second polyurethane adhesive layer and a cooking-resistant cast polypropylene film layer which are connected in sequence. Although the barrier property and corrosion resistance of the composite membrane are improved, the problem that the material is fragile and easy to crack due to low temperature resistance is not solved, and the preparation method is complicated, which increases the production cost.