Compound type polyurethane toilet seat and preparation process therof

A method for preparing a compound type polyurethane toilet seat, the method comprising:

• Step 1:
• spraying a release agent and an in-mold paint in a cavity of a mold;
• Step 2:
• cleaning the surface of the seat support by industrial alcohol;
• Step 3:
• polishing or abrasive blasting the seat support;
• afterwards, blowing the dust off the surface of the seat support;
• Step 4:
• thermally treating the cleaned seat support a temperature within 50-120° C.;
• the thermal treatment time is 30-120 minutes;
• Step 5:
• spraying the release agent in the cavity of the mold, and installing the seat support in the cavity of the mold;
• the temperature of the mold is controlled within the range of 20-60° C.;
• Step 6:
• injecting a polyurethane raw material into the cavity of the mold, and shaking the mold;
• Step 7:
• foaming the polyurethane raw material in the cavity of the mold, and making the polyurethane to seamlessly cover the outer surface of the seat support;
• Step 8:
• opening the mold to take out the product after the polyurethane is cured in the mold, thereby completing the whole preparation process of the product;
• the curing time is less than 25 minutes;
• wherein the compound type polyurethane toilet seat comprises a positioning structure, a seat support, and a surface coating layer made from polyurethane that seamlessly covers the outer surface of the seat support through the positioning structure.