国家/地区 中国（3） 韩国（2）
IPC部 B（5）
IPC大类 B05（5） C09（5） C08（3）
B29（2） B32（2）
IPC小类 B05B（5）
IPC C09D007/61（5）
发明人 LEE H（2） NAM S（2） YOON S（2）
公开年 2022（4）
申请年 2022（5）
专利权人 INDONG ELECT.（2）

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

Powder coating for improving pipe powdering efficiency, comprises synthetic ultrafine aluminum silicate powder, aluminum oxide, negative ion powder, single-layer graphene powder, xenotime powder, epoxy resin, polyester resin and additive.

ZUO Z

Producing graphite heat dissipation sheet for display panel comprises e.g. forming coating layer on surface of graphite by electrostatic spray coating of powder coating, laminating protective sheet on graphite sheet and laminating laminate.

LEE H, YOON S, NAM S

Manufacture of graphite heat-dissipation sheet used for display panel, involves forming coating layer on surface of graphite by electrostatic spray coating, laminating graphite sheet on lower protective sheet, laminating upper protective sheet on graphite sheet, and laminating with laminating roller.

LEE H, YOON S, NAM S

Preparing high-wear-resistant high-chromium graphene roll skin, comprises e.g. premixing resin, chromium, graphene, plasticizer, glidant and additives in inner cavity, melt extruding, slicing, performing iron-based phosphating pretreatment and spraying surface of roller skin by sandblasting machine.

WUMING, WANG T