Patent ID: 11911948
Assignee: CHINA TOBACCO GUANGDONG INDUSTRIAL CO., LTD.
Field: Other special machines (Mechanical engineering)
Classification: CPC B  A  C  D | IPC A  B  C  D

Claim 0:
1. A preparation method of a starch-based multi-channel airflow unit, characterized in that, the method comprises the following steps:
S1: melting a polylactic acid, wherein a temperature of a first temperature control zone is 135° C. to 145° C., a temperature of a second temperature control zone is 175° C. to 185° C., a temperature of a third temperature control zone is 190° C. to 200° C., and a temperature of a fourth temperature control zone is 175° C. to 185° C.;
S2: gelatinizing a starch-based material, adding the starch-based material in the third temperature control zone, and fully mixing;
S3: adding a polyol in the third temperature control zone, and fully mixing; and
S4: extruding out the mixed material by twin screws, sizing in vacuum, cooling and sizing, and winding and cutting to obtain the starch-based multi-channel airflow unit.