国家/地区 中国（2）
IPC部 C（2）
IPC大类 C08（2）
IPC小类 C08L（2） C09D（2）
IPC C09D005/38（2）
发明人
公开年
申请年 2022（2）
专利权人

Preparing internal spiral polyvinyl chloride drainage pipe, comprises e.g. bending and spiraling steel wire, extruding, injecting into brushing mechanism, carrying out spiral groove processing, forming inner spiral groove, spraying, extruding, painting and performing preliminary drying.

LIU Z

Photothermally actuated film useful in flexible robots and bionic system field for converting light energy into mechanical energy due to reproducibility of light energy, prepared by uniformly dispersing high molecular polymer in the solvent, evaporating, and curing.

TIAN X, GONG Y, CHEN L, ZHENG K, LIU X, WANG Y, XIAO C, DING X, LI X, ZHANG X