国家/地区 中国（3）
IPC部 B（3）
IPC大类 B29（3）
IPC小类 C08K（3）
IPC C08L005/08（3）
发明人
公开年 2022（2）
申请年 2022（3）
专利权人

High-transparent and high-strength polyethylene heat-shrinkable film useful for packaging bottle-packed beverage, comprises e.g. first layer (comprised of low-density and metallocene polyethylene), second layer, third layer and fourth layer (comprised of high density polyethylene).

LIU Z, LI R, LIU S

Blow molding of high ductility antibacterial polyethylene preservative film useful for household packaging of vegetable, comprises debugging device, injecting hot melted raw materials into conveying tank of blowing device for pre-blowing expansion and winding film.

ZHONG X, CHEN S, LIN Y

Three-dimensional printable heart valve hydrogel used for promoting vascularization and calcification, obtained by adding amino-containing natural polymer material for amidation coupling, placing reaction solution in dialysate for dialysis purification, and curing by ultraviolet light irradiation.

PU Y, LI S, WANG P, CHI B