Starch-based multi-channel airflow unit and preparation method and application thereof
US11911948B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 12, 2019 |
| Grant date | Feb 27, 2024 |
| Priority date | — |
| Expiry date | Jan 8, 2041 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD10B2401/12
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The invention discloses a starch-based multi-channel airflow unit and a preparation method and an application thereof. The preparation method of the present invention comprises the following steps: 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.; gelatinizing a starch-based material, adding the starch-based material in the third temperature control zone and fully mixing the mixture; adding a polyol in the third temperature control zone, and fully mixing the mixture; and extruding out the mixed material through twin screws, sizing in vacuum, cooling and sizing, and winding and cutting to obtain the starch-based multi-channel airflow unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.