Abstract
A new micro porous patterning method was proposed in this paper. We experimentally demonstrated the feasibility of this method using UV laser hybrid process with polymer sheet. The PP(Polypropylene) sheet of 0.1mm thickness was firstly mixed with CFA(Chemical Foaming Agent), and then the desired porous pattern was selectively fabricated by 355nm UV pulse laser processing. According to processes parameters such as laser fluence, processing time and CFA density, the characteristic of porosity which is pore size, pore density and pore type was proven to be controllable. From these experimental results, it was possible to manufacture micro porous patterned polymer sheet.
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