Conductive film and manufacturing method thereof
The present disclosure is relates to a conductive film and a manufacturing method thereof. The conductive film includes a base layer, a TPU complex layer, a conductive layer and a TPU surface layer. The TPU complex layer includes a TPU heat-resistant layer and a TPU melting layer. The TPU heat-resistant layer is disposed on the TPU melting layer, and the TPU melting layer is disposed on the base layer. The conductive layer includes a conductive circuit disposed on the TPU heat-resistant layer. The TPU surface layer is disposed on the conductive layer. Utilizing the TPU complex layer, the conductive layer does not contact directly with the base layer to avoid breaking the conductive line of the conductive layer when the base layer is pulled. Therefore, the lifetime of the conductive film can be increased.
1 . A conductive film, comprising:
a base layer;
a thermoplastic polyurethane (TPU) complex layer, having a TPU heat-resistant layer and a TPU melting layer, the TPU heat-resistant layer disposed on the TPU melting layer, and the TPU melting layer disposed on the base layer;
a conductive layer, having a conductive circuit, and the conductive circuit disposed on the TPU heat-resistant layer of the TPU complex layer and free from directly contacting the base layer; and
a TPU surface layer, disposed on the conductive layer and prepared by melting first TPU particles with a melting point of 70-180° C., a Shore hardness of 50-95 A, and a moisture content below 300 ppm.
2 . The conductive film of claim 1 , wherein the base layer is a woven fabric layer.
3 . The conductive film of claim 1 , wherein the conductive circuit is a conductive ink circuit.
4 . The conductive film of claim 1 , wherein the thickness of the TPU heat-resistant layer is 0.05-0.10 mm.
5 . The conductive film of claim 1 , wherein the thickness of the TPU melting layer is 0.10-0.20 mm.
6 . The conductive film of claim 1 , wherein the thickness of the TPU surface layer is 0.1-0.2 mm.
7 . The conductive film of claim 1 , wherein the TPU heat-resistant layer further comprises a polar functional group bond disposed on a surface of the TPU heat-resistant layer.
8 . The conductive film of claim 7 , wherein the conductive ink circuit is disposed on the polar functional group bond of the TPU heat-resistant layer.