| http://www.w3.org/ns/prov#value | - It is also possible to use as a characteristic-changeable layer a layer whose adhesiveness to various materials is improved as a result of the introduction of a polar group or of the surface condition imparted with a roughness by the effect of a photocatalyst in an exposed part by using a polymeric material such as a polyolefin including polyethylenes and polypropylenes.
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