ENTRY SHEET FOR DRILLING AND METHOD FOR DRILLING PROCESSING USING SAME
An entry sheet for drilling comprising: a metallic foil; and a layer of a resin composition, the layer formed on the metallic foil without interposing an adhesion layer, wherein the surface of the layer of the resin composition, the surface being in contact with the metallic foil, has a dispersion t...
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| Format: | Patent |
| Sprache: | eng |
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| Zusammenfassung: | An entry sheet for drilling comprising: a metallic foil; and a layer of a resin composition, the layer formed on the metallic foil without interposing an adhesion layer, wherein the surface of the layer of the resin composition, the surface being in contact with the metallic foil, has a dispersion term ySD of surface free energy in a range from 27.0 to 37.0 mJ/m2 and a polar term ySP of the surface free energy in a range from 0 to 5.0 mJ/m2. |
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