Various  coating battery separator:  (film / diaphragm / membrane) 

Tianhong corporation has advanced international production lines for Li-ion battery separator by dry and uniaxial stretching process, equipped with high precision testing instruments, using high purity PP material and advanced production technology, mainly produce Li-ion battery separator film in thickness of 12-60 microns with different specifications, which is widely used in Li-ion power batteries, Li-ion energy storage battery and Li- ion digital product battery.

Product Introdution : Basic diaphragm

Good liquid retention performance.

High altitude gap, low breathability, and low internal resistance.

High chemical stability and good mechanical properties.

Low short circuit rate in battery assembly.

Excellent thermal stability and superior low-temperature performance of batteries compared to similar products.

We are also producing the coating separator film : 

PP Battery separator film with  PMMA coating :

√ Improve adhesion.

√ Improve wet-ability and liquid retention.

√ Enhance thermal stability.

Professional Workshop:

Certificate: