Method of manufacturing for air cap sheet

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The present invention relates to a method for producing an autogeneous air cap thermokeeping sheet and, specifically, to an autogeneous air cap thermokeeping sheet having excellent warmth keeping and coolness keeping properties when being used while being adhered on a glass window. The method according to the present invention comprises : a first sheet molding step (S11) of mixing 65-95 wt% of low density polyethylene (LDPE) with 5-35 wt% of fine stone powder made into fine compounds having a particle size of 20-200 nm from stone powder, and extruding and molding a mixture by using a first T-die in a first extruder; an embossed sheet molding step (S12) of molding an embossed sheet (1100) to form an air cap in an embossing roller from the first sheet molded through the first sheet molding step; a second sheet molding step (S13) of producing a second sheet (1200) by extruding polyethylene through a second T-die from a second extruder; a first fusing step (S14) of adhering and fusing the embossed sheet (1100) produced from the embossed sheet molding step with the second sheet (1200) produced from the second sheet molding step; a third sheet molding step (S15) of extruding and molding a third sheet (1300) by using a third T-die in a third extruder by mixing 96-99.5 wt% of LDPE with 1-20 wt% of a powder produced from ceramic nano-powder or rare-earth elements to have a particle size of 20-200 nm; and a second fusing step (S16) of adhering and fusing the third sheet extruded and molded from the third sheet molding step towards the embossed sheet of the sheet fused from the first fusing step.(S11) Molding a first sheet(S12) Molding an aircap sheet(S13) Molding a second sheet(S14) First welding(S15) Molding third sheet(S16) Second weldingCOPYRIGHT KIPO 2016