Uv release tape
AssigneeNan Ya Plastics Corporation
InventorsTE-CHAO LIAO, CHUN-CHE TSAO, Chen-Ho Lai
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Abstract
A UV release tape includes a substrate layer, a UV release layer, and a separation layer. The UV release layer is disposed between the substrate layer and the separation layer. A material of the substrate layer includes a polyvinyl chloride, a plasticizer, and a metal salt compound. Relative to 100 phr of the polyvinyl chloride, an amount of the metal salt compound ranges from 1 phr to 8 phr. The metal salt compound includes a calcium salt compound and a zinc salt compound. A peeling strength of the UV release layer toward a silicon wafer is higher than 10 N/in. After being exposed to UV light, the peeling strength of the UV release layer toward the silicon wafer is lower than 0.3 N/in.
Claims10
A UV release tape, comprising:
- a substrate layer, wherein the a material of the substrate layer includes a polyvinyl chloride, a plasticizer, and a metal salt compound,
- wherein the metal salt compound includes a calcium salt compound and a zinc salt compound, and an amount of the metal salt compound ranges from 1 phr to 8 phr based on the polyvinyl chloride having a total weight of 100 phr;
- a UV release layer;
- and
- a separation layer, wherein the UV release tape is disposed between the substrate layer and the separation layer;
- wherein a peeling strength of the UV release layer toward a silicon wafer is greater than 10 N/in, and after being exposed to ultraviolet light, the peeling strength of the UV release layer toward the silicon wafer is less than 0.3 N/in.
Dependencies are inferred from the claim text.