Market garden crop e.g. asparagus crop, covering and protective sheeting film for agriculture, has complementary colorless film fixed on sheeting film along ends by defining bonnet and air cushion between walls with respect to films

摘要

The protective sheeting film (1) has a complementary colorless film (2) received from an apparent surface (1a) of dark color, where the sheeting film is made of polyethylene material. The complementary colorless film is fixed on the sheeting film along longitudinal ends by defining a floating bonnet and an air cushion between walls with respect to the two films. The complementary colorless film is fixed on the sheeting film by ultrasound welding, and connecting lines (2c) are differently provided according to the sheeting film with or without hem.