Titles:
Polyolefin-based separator with adhesive layers and method of manufacturing the same
접착층이 구비된 폴리올레핀 분리막 및 그의 제조방법
Abstracts:
According to the present invention, as an invention for improving the physical properties of the final obtained polyolefin separator while simplifying the manufacturing process of the polyolefin separator having an adhesive layer, as a method of manufacturing a polyolefin separator having an adhesive layer, polyolefin and diluent are extruders Preparing the polyolefin composition by extruding after mixing and mixing; Forming and stretching the extruded polyolefin composition in a film form; Extracting a diluent from the stretched film; Forming a bonding layer by coating a binder polymer on at least one surface of the film from which the diluent is extracted in powder form, or electrospinning the binder polymer; And heat-fixing the film on which the adhesive layer is formed.
본 발명에 따르면, 접착층이 구비된 폴리올레핀 분리막의 제조 공정을 간소화하면서 최종 수득되는 폴리올레핀 분리막의 물성을 개선하기 위한 발명으로, 접착층이 구비된 폴리올레핀 분리막의 제조방법으로서, 폴리올레핀 및 다일루언트를 압출기에 투입 및 혼합한 후 압출하여 폴리올레핀 조성물을 제조하는 단계; 상기 압출된 폴리올레핀 조성물을 필름 형태로 성형 및 연신하는 단계; 상기 연신된 필름에서 다일루언트를 추출하는 단계; 상기 다일루언트가 추출된 필름의 적어도 일면 상에 바인더 고분자를 파우더상으로 코팅하거나, 또는 바인더 고분자를 전기방사하여 접착층을 형성하는 단계; 및 상기 접착층이 형성된 필름을 열고정하는 단계;를 포함하는 접착층이 구비된 폴리올레핀 분리막의 제조방법 및 이로부터 제조된 폴리올레핀 분리막이 제공된다.
Titles:
Porous polyolefin film, battery separator and secondary battery using the same
多孔性ポリオレフィンフィルム、それを用いた電池用セパレータおよび二次電池
Abstracts:
PROBLEM TO BE SOLVED: To provide a porous polyolefin film having both high strength and low heat shrinkage ratio, which are unattainable by conventional techniques, and further having safety, a battery separator using the same, and a secondary battery. SOLUTION: The porous polyolefin is characterized in that the puncture strength in terms of porosity of 50% is 350 mN/μm or more and the maximum melt shrinkage in the width direction (TD direction) is 1% or more and 25% or less. the film. [Selection diagram] None
Titles:
Separator having fine pattern, wound body, and non-aqueous electrolyte battery
微細パタンを有するセパレータ、捲回体および非水電解質電池
Abstracts:
PROBLEM TO BE SOLVED: To provide a separator and the like capable of preventing the generation of Li dendrite on the surface of a negative electrode while improving the fluidity of an electrolytic solution. A separator (1) used in a non-aqueous electrolyte battery, comprising a base material and a convex pattern (10) provided on at least one surface of the base material, and the pattern (10) has a convex shape. In the plane direction, the end regions (11) are arranged at both ends in the plane direction, and the central region (12) is arranged between the opposite end regions (11). It has a top portion (13) protruding in the vertical thickness direction (Z direction) and arranged at the boundary with the central region (12), and the central region (12) has a smaller thickness than the top portion (13). It has a recess (14). [Selection diagram] Figure 1
