国家/地区 中国（3）
IPC部 B（3）
IPC大类 B05（3） C08（2） C09（2）
IPC小类 B05D（3）
IPC B05D007/02（3）
发明人 LIU Z（2）
公开年 2022（2）
申请年 2022（3）
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

Coating method of primary coating forming reduced graphene oxide thick film by using electronic device, involves using low-viscosity graphene oxide slurry to simultaneously satisfy conditions that solid content is in specific range and viscosity is in specific range.

LV J, LIU Z, CAI J

Preparing polyethylene terephthalate (PETG) sheet surface nano-hardened coating comprises e.g. carrying melt extrusion on PETG and polycarbonate, injection molding to obtain PETG composite substrate, subjecting it to surface treatment to obtain pretreated substrate, and spraying slurry on surface.

KONG A, WU Y, YE K, ZHOU X, KONG X, YE W