Abstract
This paper analyzes the reason why the polymer is melted on a non-forming surface during ultrasonic embossing and proposes a method to inhibit the polymer melting.On the basis of the heating mechanism of ultrasonic,it points out that the polymer melting phenomenon on non-forming surface is resulted by the friction in a horn-substrate interface.Then,it proposed the methodtwo interfaces of different friction coefficientsto inhibit the polymer melting and implemented the method by coatings surface protection films on the non-forming surface.To optimize the protection films,and the influences of the four coating film conditions on the softening time are examined through Taguchi method.The results show that the Sekisui#622E-50 film shortens the softening time by 3.4sandthe Sekisui#622WB film reduces the softening time error by 0.64 s.It demonstrates that surface protection films coated can avoid polymer melting on the non-forming surface,and improve the process replication ability and the process stability in ultrasonic embossing.
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