Preparation and Properties of Thermo-compatible Composite Plastics

In order to find a thermoplastic which can simultaneously heat seal with PP,PE and PS,according to the principle that the heat seal temperature closed to the melting temperature of resin,four kinds of resin with similar melting temperature(linear low density polyethylene(LLDPE),polypropylene(PP),polystyrene(PS)and metallocene polyethylene(mPE))were blended and taped in different proportions to prepare films. The mechanical properties,optical properties,barrier properties,thermal stability,micro-properties,bacteriostasis and anti-mildew properties of the films were tested. When the LLDPE/PP/PS/mPE ratio was 70:20:5:5,the transverse and longitudinal tensile strength of the films were 23.978,21.454 MPa,the transmittance was 19.22%,the haze was 66.577%,and other properties were good and compact. And when it was hot-sealed with PP,PE and PS,it showed strong heat-sealing performance with practical application value.